CN119231344A - A gas insulated ring network switchgear - Google Patents
A gas insulated ring network switchgear Download PDFInfo
- Publication number
- CN119231344A CN119231344A CN202411276914.0A CN202411276914A CN119231344A CN 119231344 A CN119231344 A CN 119231344A CN 202411276914 A CN202411276914 A CN 202411276914A CN 119231344 A CN119231344 A CN 119231344A
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- China
- Prior art keywords
- ring network
- fixed
- auxiliary box
- air chamber
- block
- Prior art date
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Patch Boards (AREA)
Abstract
本发明提供一种气体绝缘环网开关设备，包括环网开关设备本体，所述环网开关设备本体内开设有气室和控制开关室，气室内装设有活塞，环网开关设备本体上装设有散热结构，散热结构与活塞和控制开关室相对应，环网开关设备本体上固定有辅助箱，辅助箱的周侧装设有隔热板，辅助箱和气室内均开设有第一通槽，气室内装设有堵块，堵块与第一通槽相对应，堵块一侧装设有限位块，限位块上装设有锁死结构。本发明可以在温度较高时进行散热，防止装置的温度过高导致发生危险，可以防止误触气室导致烫伤；可以在绝缘介质泄漏后通过辅助箱对气室内的绝缘介质进行补充，从而防止气室内的绝缘介质泄漏导致发生危险。
The present invention provides a gas insulated ring network switchgear, comprising a ring network switchgear body, a gas chamber and a control switch chamber are provided in the ring network switchgear body, a piston is installed in the gas chamber, a heat dissipation structure is installed on the ring network switchgear body, the heat dissipation structure corresponds to the piston and the control switch chamber, an auxiliary box is fixed on the ring network switchgear body, a heat insulation board is installed on the peripheral side of the auxiliary box, a first through groove is provided in the auxiliary box and the gas chamber, a blocking block is installed in the gas chamber, the blocking block corresponds to the first through groove, a limit block is installed on one side of the blocking block, and a locking structure is installed on the limit block. The present invention can dissipate heat when the temperature is high, prevent the temperature of the device from being too high to cause danger, and prevent accidental contact with the gas chamber to cause burns; the insulating medium in the gas chamber can be supplemented by the auxiliary box after the insulating medium leaks, thereby preventing the insulating medium in the gas chamber from leaking and causing danger.
Description
Technical Field
The invention relates to the technical field of switching equipment, in particular to gas-insulated ring network switching equipment.
Background
The gas-insulated switchgear with metal shell mainly has the model of RM6, HXGT6, safering and the like. The switch, bus and supporting insulator of the device are arranged in a totally-enclosed metal shell, and sulfur hexafluoride gas is filled in the device to serve as arc extinguishing and insulating medium and is connected with an external cable through a sealing sleeve. Therefore, the gas-insulated ring network switch equipment is widely applied to distribution stations and box-type substations of load centers such as urban residential communities, high-rise buildings, large public buildings, factory enterprises and the like through the advantages of simple structure, small size, low cost, power supply safety and the like. The utility model discloses a gas-insulated looped netowrk switchgear as in the patent of publication number CN107769062A, including the cable box, the gas tank, the operation box, switch module and switch control the subassembly, the gas tank is installed at the rear side top of cable box, the operation box is installed at the front side top of cable box, and the mutual butt cooperation of the front side of gas tank and the rear side of operation box, switch module installs in the gas tank, switch control the subassembly and install in the operation box, switch module has and wears out the switch and control the outside and switch main shaft that the subassembly is connected with the switch. The gas-insulated looped network switchgear that the device provided adopts the modularization to design, production equipment, and the production is very nimble convenient, has improved the production efficiency of product, and the later maintenance of the product of being convenient for to effectively reduced the production management cost of product, but the device can't monitor the insulating medium in the gas tank, after insulating medium leaks, can lead to the fact the influence to the security of switchgear, and environmental protection gas-insulated looped netowrk cabinet closed switchgear is when using, owing to be gas sealing device, under high current and high voltage, the condition that gas temperature rises can appear, thereby lead to personnel to appear scalding when the mistake touches.
To this end, the invention provides a gas-insulated ring network switching device.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the gas-insulated ring network switch equipment so as to solve the problems in the background art, the gas-insulated ring network switch equipment can radiate heat when the temperature is high, prevent dangers caused by the overhigh temperature of the device, prevent the air chamber from being scalded due to false touch, and supplement the insulating medium in the air chamber through an auxiliary box after the insulating medium leaks, thereby preventing dangers caused by the leakage of the insulating medium in the air chamber.
In order to achieve the purpose, the gas-insulated ring network switch equipment comprises a ring network switch equipment body, wherein an air chamber and a control switch chamber are arranged in the ring network switch equipment body, a piston is arranged in the air chamber, a heat dissipation structure is arranged on the ring network switch equipment body and corresponds to the piston and the control switch chamber, an auxiliary box is fixed on the ring network switch equipment body, a heat insulation plate is arranged on the periphery of the auxiliary box, first through grooves are formed in the auxiliary box and the air chamber, a blocking block is arranged in the air chamber and corresponds to the first through grooves, a limiting block is arranged on one side of the blocking block, and a locking structure is arranged on the limiting block.
Further, a sliding rod is fixed on the blocking block, a sliding groove is arranged in the air chamber, and the sliding groove corresponds to the sliding rod.
Further, the inserted link is fixed with on the sprue, and the inserted link is connected with the chamber wall of air chamber and the wall sliding of auxiliary box, and the one end and the stopper fixed connection of inserted link.
Further, the locking structure comprises a clamping block, a clamping groove is formed in the wall of the auxiliary box, the clamping groove corresponds to the clamping block, the clamping block is fixedly connected with the limiting block, and the clamping block is made of elastic materials.
Further, a first electrode plate is fixed on the limiting block, a second electrode plate is fixed on the wall of the auxiliary box, the first electrode plate corresponds to the second electrode plate, an alarm is fixed on the ring network switch equipment body, and the alarm is connected with the first electrode plate and the second electrode plate through wires.
Further, a film is fixed in the auxiliary box, a third electrode plate is fixed on the film, a fourth electrode plate is fixed in the box wall of the auxiliary box, and the third electrode plate corresponds to the fourth electrode plate.
Further, a fan is fixed on the auxiliary box, and the air outlet end of the fan is communicated with the auxiliary box.
Further, a plurality of support rods are fixed between the auxiliary box and the heat insulation plate, a first cooling fan is fixed between the auxiliary box and the heat insulation plate, and the support rods are of L-shaped structures.
Further, an air inlet and an air outlet are formed in one side of the control switch chamber, and the heat dissipation structure comprises a second heat dissipation fan fixed in the air inlet.
Further, a connecting rod is fixed on one side of the piston, the connecting rod is of an L-shaped structure, the connecting rod is in sliding connection with the ring network switchgear body, a fifth electrode plate is fixed at one end of the connecting rod, a limiting rod is fixed on the second cooling fan, a sixth electrode plate is fixed on the limiting rod, and a plurality of springs are fixed between the piston and the cavity wall of the air chamber.
The gas-insulated ring network switch device has the beneficial effects that the gas-insulated ring network switch device comprises an air chamber, a piston, a ring network switch device body, a heat dissipation structure, an auxiliary box, a heat insulation plate, a first through groove and a blocking block.
Install the piston in the air chamber, install heat radiation structure on looped netowrk switchgear body, can start through piston control heat radiation structure, thereby can dispel the heat when the temperature is higher, prevent that the high temperature of device from leading to danger, install the auxiliary box on looped netowrk switchgear body, the week side installation heat insulating board at the auxiliary box, can prevent that the mistake from touching the air chamber and leading to scalding, offer first logical groove in auxiliary box and air chamber, install the sprue in the air chamber, can be after insulating medium leaks, supplement the insulating medium in the air chamber through the auxiliary box, thereby insulating medium leakage in the air chamber is prevented and is led to danger.
Drawings
FIG. 1 is a schematic diagram of an assembled perspective view of a gas-insulated ring network switchgear of the present invention;
FIG. 2 is a schematic diagram of the sectional structure of the assembly of the air chamber and the auxiliary box in the gas-insulated ring network switchgear of the present invention;
FIG. 3 is a schematic diagram of FIG. 2 at A;
FIG. 4 is a schematic diagram of the assembled cross-section structure of the air chamber and the piston in the gas-insulated ring network switch equipment;
Fig. 5 is a schematic diagram of an assembled perspective structure of a block in a gas-insulated ring network switchgear according to the present invention;
FIG. 6 is a schematic diagram showing an assembled sectional structure of an auxiliary box in a gas-insulated ring network switchgear according to the present invention;
FIG. 7 is a schematic diagram at B in FIG. 6;
The ring network switch equipment comprises a ring network switch equipment body, a2, an air chamber, a3, a control switch chamber, a 4, a blocking block, a 5, a chute, a 6, a slide bar, a 7, a plug rod, a 8, a first through groove, a 9, a second through groove, a 10, an auxiliary box, a11, a film, a 12, a limiting block, a 13, a clamping groove, a 14, a clamping block, a 15, a first electrode plate, a 16, a second electrode plate, a 17, a third electrode plate, a 18, a fourth electrode plate, a 19, a heat insulation plate, a 20, a support bar, a21, a first heat dissipation fan, a 22, a second heat dissipation fan, a 23, an air outlet, a 24, a fan, a 25, a piston, a 26, a spring, a 27, a connecting rod, a 28, a limiting rod, a 29, a fifth electrode plate, a 30, a sixth electrode plate, a 31 and an alarm.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1 to 7, the invention provides a technical scheme that the gas-insulated ring network switchgear comprises a ring network switchgear body 1, wherein a gas chamber 2 and a control switch chamber 3 are arranged in the ring network switchgear body 1, a piston 25 is arranged in the gas chamber 2, a heat dissipation structure is arranged on the ring network switchgear body 1, the heat dissipation structure corresponds to the piston 25 and the control switch chamber 3, an auxiliary box 10 is fixed on the ring network switchgear body 1, a heat insulation board 19 is arranged on the periphery of the auxiliary box 10, first through grooves 8 are arranged in the auxiliary box 10 and the gas chamber 2, a blocking block 4 is arranged in the gas chamber 2, the blocking block 4 corresponds to the first through grooves 8, a limiting block 12 is arranged on one side of the blocking block 4, and a locking structure is arranged on the limiting block 12.
In this embodiment, the sliding rod 6 is fixed on the blocking piece 4, the sliding slot 5 is provided in the air chamber 2, the sliding slot 5 corresponds to the sliding rod 6, the inserting rod 7 is fixed on the blocking piece 4, the inserting rod 7 is slidably connected with the cavity wall of the air chamber 2 and the box wall of the auxiliary box 10, one end of the inserting rod 7 is fixedly connected with the limiting block 12, the locking structure comprises a clamping block 14, the clamping groove 13 is provided in the box wall of the auxiliary box 10, the clamping groove 13 corresponds to the clamping block 14, the clamping block 14 is fixedly connected with the limiting block 12, the clamping block 14 is made of elastic materials, the limiting block 12 is fixedly provided with the first electrode plate 15, the box wall of the auxiliary box 10 is fixedly provided with the second electrode plate 16, the first electrode plate 15 corresponds to the second electrode plate 16, the alarm 31 is fixed on the ring network switch device body 1, and the alarm 31 is connected with the first electrode plate 15 and the second electrode plate 16 through wires.
Specifically, the air pressure in the air chamber 2 is greater than the air pressure in the auxiliary tank 10 under normal conditions, at this moment, the blocking piece 4 contacts with the inner wall of the air chamber 2 under the action of the air pressure, because the first through groove 8 and the second through groove 9 are in a staggered state, the blocking piece 4 can completely block the first through groove 8, the auxiliary tank 10 and the air chamber 2 are in a non-communicated state at this moment, when the insulating medium leaks, the air pressure in the air chamber 2 is reduced, the air pressure in the auxiliary tank 10 is greater than the air pressure in the air chamber 2, thereby pushing the blocking piece 4 to move to the inner side opposite to the air chamber 2 through the pressure difference, so that a gap is formed between the blocking piece 4 and the cavity wall of the air chamber 2, at this moment, the first through groove 8 and the second through groove 9 are communicated with each other, and therefore the auxiliary tank 10 and the air chamber 2 are in a communicated state at this moment, the insulating medium in the auxiliary tank 10 can be fully blocked in the air chamber 2 through the first through groove 8 and the second through groove 9, the insulating medium in the air chamber 2 can be supplemented, the insulating medium in the air chamber 2 is prevented from being reduced, the occurrence of danger is caused, and the blocking piece 4 can be blocked, namely, after the auxiliary tank 10 and the auxiliary tank 2 and the air chamber 2 are in a state of being gradually communicated with the auxiliary tank 2, and the air chamber 2 tends to be in a balanced state.
And when the blocking piece 4 slides, the blocking piece 4 can drive the slide bar 6 to slide in the chute 5, the blocking piece 4 drives the inserted bar 7 to slide, the inserted bar 7 slides in the air chamber 2 and the auxiliary box 10, one end of the inserted bar 7 is located in the auxiliary box 10, the other end of the inserted bar 7 is located in the air chamber 2, one end of the inserted bar 7 is located in the auxiliary box 10 and fixedly connected with the limiting block 12, one end of the inserted bar 7 is located in the air chamber 2 and fixedly connected with the blocking piece 4, the blocking piece 4 drives the limiting block 12 to move through the inserted bar 7, the limiting block 12 drives the first electrode plate 15 to move, the first electrode plate 15 is contacted with the second electrode plate 16, the alarm 31 can be electrified, the alarm 31 gives an alarm, and accordingly insulating medium in the working air chamber 2 is reminded.
After the insulating medium leaks, the limiting block 12 moves to drive the clamping block 14 to be inserted into the clamping groove 13, so that the clamping block 14 and the clamping groove 13 generate a clamping relationship, the position of the blocking block 4 can be limited, the blocking block 4 is prevented from resetting to block the first through groove 8, the insulating medium in the auxiliary box 10 is ensured to enter the air chamber 2, and the insulating medium in the air chamber 2 can be ensured to be supplemented.
Particularly, the clamping groove 13 is internally fixed with the lug, one end of the clamping block 14 and the lug are of a triangular structure, the triangular structure is of a right-angle triangle, the inclined plane of the triangular structure is an arc surface, when the clamping block 14 enters the clamping groove 13, the lug extrudes the clamping block 14, and therefore the elastic clamping block 14 enters the clamping groove 13 through the arc surface, the limiting relationship between the clamping block 14 and the clamping groove 13 is achieved, after the clamping block 14 is inserted into the clamping groove 13, the right-angle surface of the lug is opposite to the right-angle surface of the clamping block 14, and therefore a good limiting effect is achieved.
The film 11 is fixed in the auxiliary box 10, the third electrode plate 17 is fixed on the film 11, the fourth electrode plate 18 is fixed in the box wall of the auxiliary box 10, the third electrode plate 17 corresponds to the fourth electrode plate 18, the fan 24 is fixed on the auxiliary box 10, the air outlet end of the fan 24 is communicated with the auxiliary box 10, the third electrode plate 17 and the fourth electrode plate 18 are connected with the power supply main switch, the film 11 is made of elastic materials, two sides of the film 11 in the auxiliary box 10 are relatively independent, insulating medium is filled in one side of the auxiliary box 10, which is close to the air chamber 2, air is filled in one side of the auxiliary box 10, which is close to the heat insulation plate 19, and because the space in the auxiliary box 10 is fixed, when the air pressure of one side of the auxiliary box 10, which is filled with air, is increased, the film 11 is extruded, so that the film 11 is extruded to fill one side of the insulating medium, and the insulating medium is conveniently fed into the air chamber 2.
Specifically, after the insulating medium leaks, the insulating medium in the auxiliary box 10 can enter the air chamber 2 to supplement the insulating medium in the air chamber 2, if the insulating medium continuously leaks, the pressure in the auxiliary box 10 and the air chamber 2 reach an equilibrium state, the insulating medium in the auxiliary box 10 is difficult to enter the air chamber 2, the fan 24 can be started at this time, the fan 24 blows air into the auxiliary box 10, the pressure on one side of the film 11 is increased, and thus the pressure difference is generated on two sides of the film 11, the insulating medium on the other side of the film 11 can be completely pressed into the air chamber 2, after the insulating medium completely enters the air chamber 2, the film 11 is in contact with the wall of the auxiliary box 10 at this time, namely, the insulating medium in the auxiliary box 10 is not present, the insulating medium in the air chamber 2 cannot be supplemented, and the insulating medium in the air chamber 2 is in a continuously reduced state, at this time, the third electrode plate 17 is in contact with the fourth electrode plate 18, the power supply main switch can be controlled to be closed, the ring network switch equipment body 1 can be prevented from being powered off, danger is avoided because the insulating medium is reduced, and the safety of the device is ensured.
A plurality of support rods 20 are fixed between the auxiliary box 10 and the heat insulation plate 19, and a first heat radiation fan 21 is fixed between the auxiliary box 10 and the heat insulation plate 19.
Specifically, the false touch of the air chamber 2 can be prevented by the heat insulating plate 19, and heat can be radiated by the first heat radiation fan 21.
Particularly, the walls of the auxiliary box 10 and the supporting rods 20 can be made of heat conducting materials, when larger heat is generated in the air chamber 2, the heat can be led out from the auxiliary box 10 and the supporting rods 20, more supporting rods 20 can increase the heat dissipation area, then the first cooling fan 21 is started, and at the moment, because a gap exists between the auxiliary box 10 and the heat insulation plate 19, a better ventilation effect can be achieved, the first cooling fan 21 can accelerate air flow, so that the heat loss on the surface of the supporting rods 20 can be accelerated, the heat dissipation efficiency is improved, the heat insulation plate 19 can be prevented from being heated in a high-temperature environment for a long time, and scalding caused by mistakenly touching the heat insulation plate 19 can be prevented.
The heat insulation plate 19 and the auxiliary box 10 are all arranged around the periphery of the air chamber 2, when the temperature in the air chamber 2 is higher, the high temperature in the air chamber 2 can be blocked by the heat insulation plate 19 and the auxiliary box 10, so that a better heat insulation effect is achieved, meanwhile, heat can be blown and radiated during transmission, so that the heat insulation effect can be further improved, the heat insulation plate 19 can also have a better protection effect on the air chamber 2, external objects cannot directly contact the air chamber 2, and air between the heat insulation plate 19 and the auxiliary box 10 can have a better buffer effect, so that the air chamber 2 is prevented from being damaged by external force collision.
An air inlet and an air outlet 23 are formed in one side of the control switch chamber 3, the heat radiation structure comprises a second heat radiation fan 22 fixed in the air inlet, a connecting rod 27 is fixed on one side of a piston 25, the connecting rod 27 is in sliding connection with a ring network switch device body 1, a fifth electrode plate 29 is fixed at one end of the connecting rod 27, a limiting rod 28 is fixed on the second heat radiation fan 22, a sixth electrode plate 30 is fixed on the limiting rod 28, a plurality of springs 26 are fixed between the piston 25 and the cavity wall of the air chamber 2, the fifth electrode plate 29 and the sixth electrode plate 30 are connected with the second heat radiation fan 22 through wires, the connecting rod 27 and the limiting rod 28 are of L-shaped structures, one end of the connecting rod 27 is located in a gap between an auxiliary box 10 and a heat insulation plate 19, the gap can limit the sliding of the connecting rod 27, one surface of the limiting rod 28 with the sixth electrode plate 30 and one surface of the heat insulation plate 19 close to the auxiliary box 10 are located on the same plane, and accordingly when the connecting rod 27 contacts with the heat insulation plate 19, the connecting rod 27 can drive the fifth electrode plate 29 to contact with the sixth electrode plate 30, and accordingly the opening and closing of the second heat radiation fan 22 can be controlled well.
Specifically, when the air chamber 2 is hotter, the air pressure in the air chamber 2 is increased, so that the piston 25 is pushed, the piston 25 pushes the connecting rod 27 to move, the spring 26 is compressed, the connecting rod 27 is in contact with the limit rod 28, the fifth electrode plate 29 is in contact with the sixth electrode plate 30, the second cooling fan 22 can be electrified, so that the second cooling fan 22 is controlled to be started, the second cooling fan 22 blows air into the control switch chamber 3, external cold air enters the ring network switch equipment body 1, and then the cold air is blown out from the air outlet 23 after heat exchange in the ring network switch equipment body 1, so that the heat dissipation effect in the control switch chamber 3 can be improved, and damage of parts in the control switch chamber 3 due to overhigh temperature is prevented.
Particularly, when the temperature in the air chamber 2 is not so high, the second cooling fan 22 is not required to be started to cool at the moment, the air pressure in the air chamber 2 is reduced at the moment, so that the spring 26 rebounds, the spring 26 pushes the piston 25 to move, the piston 25 resets, the piston 25 drives the connecting rod 27 to move, the connecting rod 27 drives the fifth electrode plate 29 to reset, the fifth electrode plate 29 is separated from the sixth electrode plate 30, the second cooling fan 22 is stopped to start, and the air in the switch chamber 3 is controlled to naturally flow through the air outlet 23 to cool at the moment, so that the energy waste can be reduced.
When the air is colder, the density of the air in the air chamber 2 is reduced, the air pressure is reduced, and the piston 25 can be driven to reset through the rebound of the spring 26, so that the air pressure in the air chamber 2 can be compensated, the block 4 is prevented from being mistakenly touched due to the reduction of the air pressure, a large amount of insulating mediums in the auxiliary box 10 are prevented from entering the air chamber 2, and the safety of the device is ensured.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411276914.0A CN119231344B (en) | 2024-09-12 | 2024-09-12 | A gas insulated ring network switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411276914.0A CN119231344B (en) | 2024-09-12 | 2024-09-12 | A gas insulated ring network switchgear |
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| Publication Number | Publication Date |
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| CN119231344A true CN119231344A (en) | 2024-12-31 |
| CN119231344B CN119231344B (en) | 2025-04-18 |
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| CN116914599A (en) * | 2023-06-01 | 2023-10-20 | 江苏苏北电力工程有限公司 | Heat-storage constant-temperature self-adjustment energy-saving electric power cabinet |
| CN220510598U (en) * | 2023-08-15 | 2024-02-20 | 久创新能源科技（上海）有限公司 | Short circuit pressure relief protection device for direct current cabinet |
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| CN119231344B (en) | 2025-04-18 |
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Address after: 441000 Hubei Province Xiangyang City Xiangzhou District Heppa Town Kangzhuang Avenue East, Guangming Road South (across from Qingheyuan Community) Patentee after: Hubei E'Dian Intelligent Electrical Co.,Ltd. Country or region after: China Address before: No. 25 Jianshe Road, Fancheng District, Xiangyang City, Hubei Province, 441000 (Residence application) Patentee before: HUBEI EDIAN DAQUAN ELECTRIC EQUIPMENT MANUFACTURING Co.,Ltd. Country or region before: China |