CN106323524A - Transformer high voltage bushing end linear metal fitting static state pulling force measurement system and method - Google Patents

Abstract

The invention discloses a transformer high voltage bushing end linear metal fitting static state pulling force measurement system and method. A frame body comprises an upper cross beam, a lower cross beam, a left cross beam and a right cross beam; two holes are respectively formed on the upper cross beam and the lower cross beam in the horizontal direction; the middle part of the frame body is provided with a middle cross beam; two holes are formed on the middle cross beam in the horizontal direction; the holes of the upper cross beam, the middle cross beam and the lower cross beam are corresponded in a vertical direction; the middle cross beam comprises a fixing part and two connection parts; the two ends of the fixing part are arranged on the frame body through the connection parts; the top of the fixing part is higher than the upper cross beam and the lower cross beam in the horizontal direction; the bottom of the fixing part is lower than the upper cross beam and the lower cross beam in the horizontal direction; and the upper cross beam, the lower cross beam, the left cross beam, the right cross beam and the connection part are provided with pulling force sensors. The transformer high voltage bushing end linear metal fitting static state pulling force measurement system and method solve a problem that the force on the transformer high voltage bushing end linear metal fitting is hard to detect, and can realize convenient, real-time and accurate detection of the pulling force of the linear metal fitting.

Description

Static tension measurement system and method for one-shaped fittings at the end of transformer high-voltage bushing

technical field

The invention relates to the field of electric power, in particular to a system and method for measuring the static tension of an in-line fitting at the end of a high-voltage bushing of a transformer.

Background technique

Fittings are iron or aluminum metal accessories widely used in power transmission lines. Most of the fittings need to withstand large tension during operation, and some of them must also ensure good electrical contact. Due to the unreasonable design of the wiring fittings at the end of the bushing of the UHV substation, the insufficient strength of the cover plate of the terminal at the end of the bushing, and the weak link in the sealing design, the lateral force of the terminal at the top of the bushing exceeds the design value, and the long-term effect Under the circumstances, the end of the bushing is deformed, the seal fails, and water enters, which eventually leads to an inter-turn short circuit fault in the main transformer. In order to analyze the force of the wiring fittings at the end of the bushing, the simulation analysis method is mainly used at present, but the simulation analysis needs to set multiple assumptions, which cannot fully reflect the actual force situation, and cannot be verified by experimental data. Therefore, it is necessary to carry out physical experiments to provide a basis for optimal design. Due to the special shape of the wiring fittings at the end of the bushing, there are no good testing methods and devices at present, and most of them are detected by direct manual operation using sensors. Therefore, it is difficult to carry out physical stress tests and it is impossible to collect tension information in real time.

The invention with the application number of 200820054261.1 discloses a transformer high-voltage bushing and low-voltage terminal board pressure and temperature test device. An oil tank is provided on the bracket, and a high-voltage connector capable of installing the transformer high-voltage bushing and a transformer can be installed on the oil tank. The low-voltage connection body of the low-voltage side terminal board is also provided with upper and lower ventilation holes and observation holes, a heating device and a temperature sensor on the fuel tank, and a control box is provided on the support, and the control box is electrically connected with the heating device and the temperature sensor. The invention can carry out sealing and high-temperature tests on the high-voltage bushing of the transformer, but cannot detect the tension parameter of the fittings at the end of the bushing. The invention patent with the application number 201320839446.4 discloses a high-voltage bushing end screen sensor, including a lightning impulse protection module, a fast grounding module, an open circuit voltage limiting protection module, and a detection output voltage. After the lightning impulse protection module detects that the output voltage exceeds the limit The detection output voltage is introduced into the ground through the fast grounding module, and the open circuit voltage limiting protection module adjusts the output range of the detection output voltage. However, the sensor can only detect the voltage parameters of the bushing of the power equipment, but cannot detect the tension parameters of the fittings at the end of the bushing, cannot judge whether the lateral force of the terminal on the top of the bushing exceeds the design value, and cannot obtain the actual force of the fittings of the bushing Condition.

Contents of the invention

In view of this, the present invention provides a static tension measuring system and method for the in-line fittings at the end of transformer high-voltage bushings, which solves the problem that it is difficult to detect the actual force of the in-line fittings at the end of transformer bushings in existing substations, and can Realize the convenient, real-time and accurate detection of the pulling force of the inline fittings, so as to monitor the use status of the inline fittings and carry out timely maintenance or replacement.

The present invention adopts following technical scheme:

A static tension measurement system for in-line fittings at the end of a high-voltage bushing of a transformer, including a frame, the frame includes an upper beam, a lower beam, a left beam, and a right beam, and the upper beam and the lower beam of the frame are Both are provided with two holes in the horizontal direction, the middle part of the frame body is provided with a middle beam, and the middle beam is provided with two holes in the horizontal direction, and the holes of the upper beam, the middle beam and the lower beam are corresponding in the vertical direction; The middle crossbeam includes a fixed part and two connecting parts, the two ends of the fixed part are arranged on the frame body through the connecting part, the top of the fixed part is higher than the upper crossbeam and the lower crossbeam in the horizontal direction, and the bottom is in the horizontal direction Lower than the upper beam and the lower beam; the upper beam, the lower beam, the left beam, the right beam and the connecting parts are all equipped with tension sensors.

Preferably, each connection part is provided with a tension sensor.

Preferably, four tension sensors are arranged in the connection part, and the four tension sensors are evenly distributed around the connection part.

Preferably, two grooves are provided on the upper beam, the lower beam, the left beam and the right beam, and the tension sensor is arranged in the groove.

Preferably, two tension sensors are arranged vertically in the groove.

Preferably, the upper beam and the lower beam are provided with inward projections, and the two holes of the upper beam and the lower beam are respectively provided on the corresponding projections.

Preferably, the thickness of the connecting portion is smaller than that of the frame body.

Preferably, the static tension measurement system for the in-line fittings at the end of the high voltage transformer bushing further includes a digital display meter, the digital display meter is connected to a terminal provided on the frame, and the terminal is electrically connected to the tension sensor.

Preferably, the static tension measurement system for the in-line fittings at the end of the transformer high voltage bushing further includes a power supply, the power supply is connected to a terminal provided on the frame, and the terminal is electrically connected to the tension sensor.

A method for measuring the static tension of an in-line fitting at the end of a transformer high-voltage bushing, comprising the following steps:

Step 1, set tension sensors on the upper beam, lower beam, left beam, right beam and connecting parts of the frame, the tension sensors set on the upper beam and the lower beam measure the force of the in-line fittings in the Y direction; The tension sensors arranged on the left beam and the right beam measure the force of the in-line fittings in the X direction; the tension sensors arranged in the connecting part measure the force of the in-line fittings in the Z direction;

Step 2. Set the static tension measurement system of the inline fittings at the end of the high-voltage bushing of the transformer on the inline fittings, and use the tension sensor to detect the stress of the inline fittings to obtain the tension parameter value;

Step 3: Output the tension parameter values obtained by each sensor, calculate the average value of the tension sensors measuring the force in the X direction, Y direction, and Z direction respectively, and obtain the tension parameters of the in-line fittings in the X direction, Y direction, and Z direction value.

The present invention has the following beneficial effects:

In the present invention, a plurality of tension sensors are arranged on the frame body and the connecting part. The tension sensors arranged on the upper beam and the lower beam can measure the axial (Y direction) stress, and the tension sensors installed on the left and right beams can measure For the force in the lateral direction (X direction), the tension sensor installed on the connecting part can measure the force in the vertical direction (Z direction). There are multiple sensors for detecting the force in each direction. The tension value measured by multiple sensors is The average value is taken to obtain the final tension value, which avoids the inaccurate measurement results caused by the uneven force of a single sensor and improves the measurement accuracy.

The tension sensor of the crossbeam in the present invention measures the stress situation in the Z direction. The middle crossbeam includes connecting parts at both ends and a fixed part in the middle. The thickness of the connecting part is smaller than the fixed part and the frame body. The upper cross beam and the lower cross beam, the back side of the present invention, the fixed part is lower than the upper cross beam and the lower cross beam. The central crossbeam of the present invention adopts such a suspended structure, and the connection part does not touch the object to be tested. When an external force is applied, the front of the fixed part is stressed, and the force is transmitted from the fixed part to the connection parts on both sides, and the test range is wider. At the same time, tension sensors are installed in the two connecting parts, and there are multiple tension sensors. The average value of the parameter values measured by multiple sensors is calculated to obtain the force situation in the Z direction, and the measurement accuracy is higher.

The present invention can detect the force condition of the inline fittings in real time, and when the acquired tension parameter value is greater than the preset maximum value, it is judged that the inline fittings may break, and the alarm information and position information are sent to the monitoring center, and the monitoring center After recording, send maintenance personnel to the scene for maintenance. It can also send an alarm message to the maintenance personnel at the same time or send it to the mobile phone APP of the maintenance personnel. After the maintenance personnel go to the site for maintenance, they will feed back the processing situation to the monitoring center, and the monitoring center will record it.

The invention solves the problem of difficult detection of the actual stress of the existing substation transformer bushing end wiring fittings, and avoids the failure of the main transformer due to failure to detect, repair or replace the fittings when the fittings are too laterally stressed and may break. The problem of inter-turn short-circuit fault occurs; the invention facilitates maintenance and testing work, and reduces labor costs.

Other advantages, objects and features of the present invention will be set forth in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the investigation and research below, or can be obtained from It is taught in the practice of the present invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the following description or appended drawings.

Description of drawings

Fig. 1 is a schematic diagram of the front view of the static tension measuring system for the inline fittings at the end of the transformer high voltage bushing according to the present invention.

FIG. 2 is a schematic bottom view of the structure of FIG. 1 .

FIG. 3 is a schematic structural diagram of the left view of FIG. 1 .

Fig. 4 is a schematic diagram of the sensor layout and wiring of the static tension measurement system for the in-line fittings at the end of the transformer high voltage bushing according to the present invention.

FIG. 5 is a schematic diagram of the cross-sectional structure along line A-A of FIG. 4 .

FIG. 6 is a schematic diagram of the cross-sectional structure along line B-B of FIG. 4 .

Fig. 7 is a schematic diagram of the use state of the static tension measuring system for the inline fittings at the end of the transformer high voltage bushing according to the present invention.

Fig. 8 is a flow chart of the method for measuring the static tension of the in-line fitting at the end of the transformer high voltage bushing according to the present invention.

Fig. 9 is a flow chart of another embodiment of the method for measuring the static tension of the in-line fitting at the end of the transformer high voltage bushing according to the present invention.

detailed description

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

As shown in Fig. 1-Fig. 6, the present invention provides a static tension measurement system for inline fittings at the end of high voltage transformer bushings, including a frame body 2, which includes an upper beam, a lower beam, a left beam and a right beam, Both the upper beam and the lower beam of the frame body are provided with two holes 4 in the horizontal direction. A middle crossbeam is arranged in the middle of the frame, and the middle crossbeam includes a fixing part 7 and two connecting parts 6, and the two ends of the fixing part 7 are respectively arranged on the left and right crossbeams of the frame through the connecting parts 6. The fixing part 7 is provided with two holes 4 in the horizontal direction, and the holes 4 of the upper crossbeam, the middle crossbeam and the lower crossbeam are corresponding in the vertical direction.

The top of the fixed part 7 is higher than the upper beam and the lower beam in the horizontal direction, and the bottom is lower than the upper beam and the lower beam in the horizontal direction. The upper beam, the lower beam, the left beam, the right beam and the connecting part 6 are all provided with tension sensors. The thickness of the connecting part 6 is smaller than that of the frame body and the fixing part 7 . The middle beam adopts this suspended structure, and the connecting part 6 does not touch the object to be tested. When an external force is applied, the front (top) of the fixed part 7 is stressed, and the force is transmitted from the fixed part 7 to the connecting parts 6 on both sides. The tension sensor 602 in part 6 measures the force in the Z direction of the object to be tested (inline fittings). This structure has a wider test range and higher measurement accuracy. At the same time, tension sensors are installed in the two connecting parts, and there are multiple tension sensors. The average value of the parameter values measured by multiple sensors is calculated to obtain the force situation in the Z direction, and the measurement accuracy is higher.

In one embodiment, a groove can be firstly provided on the frame body at the position where the tension sensor needs to be installed, and then the corresponding tension sensor can be buried in the groove. For example, in order to measure the force in the Y direction (axial direction), grooves 301 are provided on the upper beam and the lower beam. In this embodiment, there are two grooves 301 on the upper beam and the lower beam, as shown in Figure 4- As shown in 6, two tension sensors 302 are arranged vertically in each groove 301, and these eight tension sensors 302 respectively measure the force value of the in-line fittings in the Y direction, and calculate the average value, and the final average value is It is the force value of the straight fittings in the Y direction. There are two grooves 101 on the left beam and the right beam. Two tension sensors 102 are arranged in each groove 101 along the vertical direction. These 8 tension sensors 102 measure the in-line fitting X respectively. Calculate the average value of the force value in the X direction, and the final average value is the force value of the straight fittings in the X direction.

The X direction (horizontal direction), the Y direction (axial direction), and the Z direction (vertical direction) respectively represent the X-axis, Y-axis, and Z-axis directions of the spatial rectangular coordinate system.

One tension sensor 602 is respectively arranged in each connecting portion 6 , and four tension sensors 602 are evenly distributed around the connecting portion 6 . The eight tension sensors 602 respectively measure the force value of the inline fittings in the Z direction, and calculate the average value, and the final average value is the force value of the inline fittings in the Z direction.

In one embodiment, inward projections 5 are provided on the upper and lower beams of the frame, and the two holes 4 of the upper and lower beams are respectively provided on the corresponding projections 5 . The two protrusions 5 are arranged horizontally and parallel to the fixing part 7 . The top of the fixing part 7 is higher than the protrusion 5 in the horizontal direction, and the bottom is lower than the protrusion 5 in the horizontal direction, and the thickness of the connecting part 6 is smaller than that of the frame body and the fixing part 7 . Like this, on the front of the present invention, the fixed part 7 is higher, and on the back side of the present invention, the fixed part 7 position is lower, and no matter the connection part 6 is on the front or the back, its height is all low. , the fixing part 7 receives force directly, and the force is transmitted to the connection parts 6 on both sides, and the tension sensor 602 provided in the connection part 6 detects the tension value.

In one embodiment, the static tension measuring system for the in-line fittings at the end of the high voltage transformer bushing further includes a digital display meter connected to a terminal provided on the frame, and the terminal is electrically connected to the tension sensor. Fig. 4 is a schematic diagram of the wiring layout of the sensor of the present invention, the direction of the arrow represents the direction of the lead wire, a wire slot is opened in the frame, the wires are arranged in the wire slot, and each sensor is connected to the terminal through the wire. When measuring the force of the straight fittings, the digital display can display the measured tension value, which is convenient for the staff to record.

In one embodiment, the static tension measurement system for the in-line fittings at the end of the high voltage transformer bushing further includes a power supply, which is connected to the terminal 8 provided on the frame, and the terminal is electrically connected to the tension sensor. The power supply supplies power to the tension sensor and the digital display. The power source can be a lithium battery.

As shown in Figure 8, a method for measuring the static tension of the in-line fittings at the end of a transformer high-voltage bushing includes the following steps:

Step 1, set tension sensors on the upper beam, lower beam, left beam, right beam and connecting parts of the frame, the tension sensors set on the upper beam and the lower beam measure the force of the in-line fittings in the Y direction; The tension sensors arranged on the left beam and the right beam measure the force of the in-line fittings in the X direction; the tension sensors arranged in the connecting part measure the force of the in-line fittings in the Z direction;

Step 2. Set the static tension measurement system of the inline fittings at the end of the high-voltage bushing of the transformer on the inline fittings, and use the tension sensor to detect the stress of the inline fittings to obtain the tension parameter value;

Step 3, output the tension parameter values obtained by each sensor, classify the tension sensors according to the X direction, Y direction, and Z direction, and calculate the average value of the tension sensors that measure the force in the X direction, Y direction, and Z direction respectively, and obtain a The tensile parameter values of the font fittings in the X direction, Y direction and Z direction.

The basic principle of the resistance strain test method is an experimental stress analysis method that uses resistance strain gauges to measure the linear strain on the surface of the component, and then determines the stress state of the component surface according to the strain-stress relationship. This method is to paste the resistance strain gauge on the surface of the component under test. When the component is deformed, the resistance value of the resistance strain gauge will change accordingly, and then the resistance change is converted into a voltage (or current) change by the resistance strain gauge. , and then convert it into a strain value or output a voltage (or current) signal proportional to the strain, and record it with a recorder to obtain the measured strain or stress.

The theoretical formula for the resistance strain effect is:

In the formula:

ρ is resistivity (Ω·mm ² /m);

L is the length of the metal wire (m);

S is the cross-sectional area of the metal wire (mm ² );

It can be seen from the above formula that during the process of mechanical deformation of the metal wire under stress, ρ, L, and S will all change, which will inevitably cause changes in the resistance value of the metal wire. When stretched by external force, the length increases, the cross-sectional area decreases, and the resistance value increases; when the pressure is shortened, the length decreases, the cross-sectional area increases, and the resistance value decreases. Therefore, as long as the change of the resistance value can be measured, the strain of the metal wire can be determined. This conversion relationship is: .

In the formula: is the variation of the resistance value of the metal wire; K ₀ is the strain sensitivity coefficient of the metal material, which is mainly determined by the test method and is basically constant within the elastic limit; ε is the axial strain value of the metal material, so it is also called the length strain Value, for metal wire, its value is between 0.24 and 0.4.

In practical applications, the metal resistance strain gauge is pasted on the surface of the elastic element of the sensor or the mechanical part to be tested. When the elastic element in the sensor or the mechanical part under test is subjected to force to generate strain, the strain gauge pasted on it will also undergo the same mechanical deformation, causing a corresponding change in the resistance of the strain gauge. At this time, the resistance strain gauge converts the mechanical quantity into the output of the change of resistance.

The static tension measurement system for inline fittings sets screw holes corresponding to the holes in inline fittings on the frame, and the diameter of the screw holes is smaller than the diameter of the holes in inline fittings. The aperture of the screw hole is small, which is convenient for installation and fixing, and avoids that the bolt that can pass through the screw hole cannot pass through the hole of the straight fitting when fixing. In this embodiment, the specific parameters of the tension sensor: range: 5000N in X, Y, and Z directions; accuracy: 5/1000; power supply: 24V; output: 0-5V.

According to the shape of the connection fittings at the end of the inline transformer bushing, a static tension measuring system for the inline fittings of the present invention with a specific size is produced. As shown in Figure 7, the 9 in-line fitting static tension measurement systems are respectively fixed to the in-line fittings 11 on the left and right sides of the bushing 10 through bolts with a diameter of M12, and then the wire clamps are also passed through the M12 bolts Fix it on the made in-line fitting static tension measuring system 9, and fix the in-line fitting 11 at the end of the transformer bushing, the in-line fitting static tension measuring system 9, and the wire clamp, and the in-line fitting at the end of the transformer bushing The force condition of the inline fittings 11 can be reflected by the change of the tension sensor in the static tension measuring system 9 of the inline fittings, and the stress borne by the inline fittings at the end of the transformer bushing can be tested in real time, and can be measured through the digital display header output.

In one embodiment, as shown in Figure 9, the present invention includes the following steps:

Step 1, set tension sensors on the upper beam, lower beam, left beam, right beam and connecting parts of the frame, the tension sensors set on the upper beam and the lower beam measure the force of the in-line fittings in the Y direction; The tension sensors arranged on the left beam and the right beam measure the force of the in-line fittings in the X direction; the tension sensors arranged in the connecting part measure the force of the in-line fittings in the Z direction;

Step 2. Set the static tension measurement system of the inline fittings at the end of the high-voltage bushing of the transformer on the inline fittings, and use the tension sensor to detect the stress of the inline fittings to obtain the tension parameter value;

Step 3, output the tension parameter values obtained by each sensor, classify the tension sensors according to the X direction, Y direction, and Z direction, and calculate the average value of the tension sensors that measure the force in the X direction, Y direction, and Z direction respectively, and obtain a The tensile parameter values of the font fittings in the X direction, Y direction and Z direction;

Step 4, compare the output pulling force parameter value with the preset pulling force parameter value, if it exceeds the preset maximum pulling force parameter value, an alarm will be issued and an alarm message will be sent; if the preset maximum pulling force parameter value is not exceeded, then Continue testing and go to step 2.

In this embodiment, in addition to real-time detection of the pulling force value of the straight fittings, the usage status of the straight fittings can also be judged through the collected pulling force values, and when the fittings may break, an alarm message can be sent, which can be found and repaired in time. Replace or overhaul. For example, if the maximum force that the fittings can bear is 100N, the preset maximum tension parameter value is 100N. If the value of the tension parameter is greater than 100N, the fitting exceeds the maximum bearing force and may break, and an alarm message will be sent at this time An alarm is issued, and maintenance personnel are sent to the scene for maintenance or replacement.

In one embodiment, the present invention comprises the steps of:

Step 1, set tension sensors on the upper beam, lower beam, left beam, right beam and connecting parts of the frame, the tension sensors set on the upper beam and the lower beam measure the force of the in-line fittings in the Y direction; The tension sensors arranged on the left beam and the right beam measure the force of the in-line fittings in the X direction; the tension sensors arranged in the connecting part measure the force of the in-line fittings in the Z direction;

Step 2. Set the static tension measurement system of the inline fittings at the end of the high-voltage bushing of the transformer on the inline fittings, and use the tension sensor to detect the stress of the inline fittings to obtain the tension parameter value;

Step 3, output the tension parameter values obtained by each sensor, classify the tension sensors according to the X direction, Y direction, and Z direction, and calculate the average value of the tension sensors that measure the force in the X direction, Y direction, and Z direction respectively, and obtain a The tensile parameter values of the font fittings in the X direction, Y direction and Z direction;

Step 4, compare the output pulling force parameter value with the preset pulling force parameter value, if it exceeds the preset maximum pulling force parameter value, an alarm will be issued and an alarm message will be sent; if the preset maximum pulling force parameter value is not exceeded, then Continue to detect, go to step 2;

Step 5: Obtain the location information of the inline fittings at the end of the high voltage bushing of the transformer, and send the location information while sending the alarm information.

In this embodiment, when it is judged that the inline fitting may break and the alarm message is sent, the position information of the fitting is acquired and sent at the same time, so that maintenance personnel can quickly find the location of the fault and carry out maintenance on site. This method solves the difficult problem of detecting the actual situation of the horizontal force of the fittings at the end of the transformer bushing in the existing substation, and avoids the possibility of breaking the fittings due to the failure to detect, repair or replace them in time when the fittings are subjected to excessive lateral force. The problem of inter-turn short-circuit fault is changed; the invention facilitates maintenance and testing work, and reduces labor costs.

This method can detect the stress of the straight fittings in real time. When the obtained tensile parameter value is greater than the preset maximum value, it is judged that the straight fittings may break, and the alarm information and location information are sent to the monitoring center. After recording, send maintenance personnel to the scene for maintenance. It can also send an alarm message to the maintenance personnel at the same time or send it to the mobile phone APP of the maintenance personnel. After the maintenance personnel go to the site for maintenance, they will feed back the processing situation to the monitoring center, and the monitoring center will record it.

In one embodiment, when the obtained tensile parameter value is greater than the preset maximum value, it is judged that the inline fitting may break, and the alarm information and location information are sent to the monitoring center, and the monitoring center sends maintenance personnel to the site for maintenance after recording . It can also send an alarm message to the maintenance personnel at the same time or send it to the mobile phone APP of the maintenance personnel. After the maintenance personnel go to the site for maintenance, they will feed back the processing situation to the monitoring center, and the monitoring center will record it.

In one embodiment, when the obtained tensile force parameter value is less than the preset maximum value, it is further judged whether it is within the second preset value range, for example, when the pull force of the inline fitting is greater than 100N, it will break, and when When the tension value it bears is 90-99N for a long time, when the time reaches a certain node, such as 100h, or reaches a certain number of times, it is easy to be damaged or broken. If the acquired tension parameter value is within the second preset value range, record the occurrence time and the tension parameter value, and then continue detection. If the obtained tension parameter value exceeds the preset time or times within the second preset value range, an early warning message is sent, and at the same time location information is sent to notify maintenance personnel to go to the site for maintenance. The method of this embodiment can further judge the use status of the fittings, and can detect problems in time to avoid tripping caused by the breakage of the fittings.

Finally, it is noted that the above embodiments are only used to illustrate the technical solution of the present invention without limitation, other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and spirit of the technical solution of the present invention All should be included in the scope of the claims of the present invention.

Claims (10)

1. a transformer high-voltage bushing end yi word pattern gold utensil static tensile force measures system, it is characterised in that: include framework, institute Stating framework and include entablature, sill, left crossbeam and right crossbeam, entablature and the sill of described framework set the most in the horizontal direction Putting two holes, be provided with middle cross beam in the middle part of described framework, wherein the middle cross beam arranges two holes in the horizontal direction, described entablature, Middle cross beam is corresponding at vertical direction with the hole of sill；Wherein the middle cross beam includes fixed part and two connecting portions, described fixed part Two ends are arranged in framework through connecting portion, and the top of described fixed part is in the horizontal direction higher than described entablature and sill, the end Portion is in the horizontal direction less than described entablature and sill；Described entablature, sill, left crossbeam, right crossbeam and connecting portion are equal It is provided with pulling force sensor.

Transformer high-voltage bushing end the most according to claim 1 yi word pattern gold utensil static tensile force measures system, its feature It is: described each connecting portion is provided with pulling force sensor.

3. according to claim 1 or the 2 transformer high-voltage bushing end yi word pattern gold utensil static tensile force stated measure systems, it is special Levying and be: arrange four pulling force sensors in described connecting portion, four described pulling force sensors are evenly distributed on connecting portion Surrounding.

Transformer high-voltage bushing end the most according to claim 1 yi word pattern gold utensil static tensile force measures system, its feature Being: be equipped with two grooves on described entablature, sill, left crossbeam and right crossbeam, described pulling force sensor is arranged on recessed In groove.

Transformer high-voltage bushing end the most according to claim 4 yi word pattern gold utensil static tensile force measures system, its feature It is: in described groove, two pulling force sensors are set at vertical direction.

Transformer high-voltage bushing end the most according to claim 1 yi word pattern gold utensil static tensile force measures system, its feature It is: two holes being equipped with inside projection, described entablature and sill on described entablature and sill are respectively provided at On corresponding projection.

Transformer high-voltage bushing end the most according to claim 1 yi word pattern gold utensil static tensile force measures system, its feature It is: the thickness of described connecting portion is less than described framework.

Transformer high-voltage bushing end the most according to claim 1 yi word pattern gold utensil static tensile force measures system, its feature It is: described transformer high-voltage bushing end yi word pattern gold utensil static tensile force is measured system and also included digital display meter, described digital display meter Being connected with the binding post arranged in framework, described binding post electrically connects with pulling force sensor.

Transformer high-voltage bushing end the most according to claim 1 yi word pattern gold utensil static tensile force measures system, its feature It is: described transformer high-voltage bushing end yi word pattern gold utensil static tensile force is measured system and also included power supply, described power supply and frame The binding post arranged on body connects, and described binding post electrically connects with pulling force sensor.

Transformer high-voltage bushing end the most according to claim 1 yi word pattern gold utensil static tensile force measuring method, its feature It is: comprise the steps:

Step 1, entablature, sill, left crossbeam, right crossbeam and the connecting portion in framework is respectively provided with pulling force sensor, described on The pulling force sensor that crossbeam and sill are arranged measures yi word pattern gold utensil stress in the Y direction；Described left crossbeam sets with right crossbeam The pulling force sensor put measures the yi word pattern gold utensil stress in X-direction；The pulling force sensor arranged in described connecting portion measures one Font gold utensil is in the stress of Z-direction；

Step 2, is arranged on transformer high-voltage bushing end yi word pattern gold utensil static tensile force measurement system on yi word pattern gold utensil, by The stressing conditions of pulling force sensor detection yi word pattern gold utensil, obtains pulling force parameter value；

Step 3, exports the pulling force parameter value that each sensor obtains, to the pulling force biography measuring X-direction, Y-direction, Z-direction stress Sensor averaged respectively, obtains yi word pattern gold utensil at X-direction, Y-direction, the pulling force parameter value of Z-direction.