CN206195550U - Compared with prior art, - Google Patents

Abstract

The utility model relates to a cycle consumption reduction and energy-saving device for a water-cooled cooler of a motor, comprising: a water-cooled cooler, an evaporator and a condensed water storage tank; the water-cooled cooler is connected with a synchronous motor, and is provided with a water inlet pipe and a water outlet pipe; The condensate produced by condensation of the evaporator has a temperature of less than 30°C; the inlet of the condensate storage tank is connected to the condensate outlet at the bottom of the evaporator through a pipeline, and the outlet is connected to the water inlet pipe through a condensate pipe. The consumption reduction and energy saving device improves the cooling effect of the water-cooled cooler, increases the service life of the synchronous motor, and reduces the failure rate and maintenance cost of the blower unit.

Description

A water-cooled cooler cycle consumption reduction and energy saving device for motors

technical field

The utility model relates to the technical field of metal smelting, in particular to a cycle consumption reduction and energy saving device for a motor water-cooled cooler.

Background technique

At present, blast furnace dehumidification blower units in the iron and steel smelting industry mostly use synchronous motors to drive blowers to provide smelting cold air sources for blast furnaces. Each set of blast furnace blower units is equipped with a water-cooled cooler for (source machine) synchronous motors. Among them, the water-cooled cooler is equipped with a special cooling water circulation system from the water station to reduce the internal temperature of the motor, ensure the dissipation of heat inside the motor, protect the motor windings, and improve the safe operation factor of the motor. The system generally adopts cooling water at the inlet of 30-35°C. Under the condition of no leakage of the motor water-cooled cooler and no fouling of copper pipes, the temperature of the motor winding is kept below 85°C, so as to realize the safety of the blast furnace dehumidification blower unit Operation and normal production of blast furnace.

Due to the rise of atmospheric temperature due to seasonal changes, high-load operation of the blower unit required for blast furnace production, especially in summer high temperature conditions, although the inlet water temperature of the motor cooler can meet the requirements of 30-35 ℃, but the motor winding is due to the high temperature of the blower unit. Factors such as load operation, copper tube scaling inside the cooler, and copper tube leakage cause the motor winding temperature to gradually rise to 95°C or even higher (alarm at 90°C, unit trip at 100°C), which seriously endangers the life of the motor and the safe operation of the blower unit. As a result, equipment maintenance costs increase and the blower unit failure rate increases.

The cooling effect of the water-cooled cooler in the prior art is not good. Under the conditions of fouling inside the cooler, copper tube leakage, and high water temperature, the temperature of the motor winding gradually rises, which endangers the safe operation requirements of the blower unit and affects the safe production of the blast furnace.

Utility model content

The application provides a water-cooled cooler cycle consumption reduction energy-saving device for motors, which solves or partially solves the technical problem that the cooling effect of the water-cooled cooler in the prior art is not good, which leads to potential safety hazards in the blower unit, and realizes the improvement of water cooling. The cooling effect of the type cooler improves the service life of the synchronous motor and reduces the failure rate and maintenance cost of the blower unit.

The application provides a motor water-cooled cooler cycle consumption reduction energy-saving device, which is used for cooling and cooling synchronous motors of blast furnace blowers. The motor water-cooled cooler cycle consumption reduction energy-saving device includes:

A water-cooled cooler, connected to the synchronous motor, is provided with a water inlet pipe and a water outlet pipe;

Evaporator, condensing to produce condensed water with a temperature less than 30°C;

In the condensed water storage tank, the inlet is connected to the condensed water outlet at the bottom of the evaporator through a pipeline, and the outlet is connected to the water inlet pipe through a condensed water pipe.

As a preference, the condensation water pipe is connected to the water inlet pipe through a three-way pipe;

The three-way pipe is connected with the normal temperature water pipe.

As a preference, the normal temperature water pipe is provided with a first manual gate valve for controlling the amount of normal temperature cooling water passing into the water inlet pipe;

The water outlet pipe is provided with a second manual gate valve.

As a preference, the motor water-cooled cooler cycle consumption reduction and energy saving device also includes:

a primary purification filter arranged between the evaporator and the condensed water storage tank;

The condensed water generated by the evaporator enters the upper part of the condensed water storage tank after being filtered by the primary purification filter.

As a preference, the motor water-cooled cooler cycle consumption reduction and energy saving device also includes:

A secondary purification filter is arranged inside the condensed water storage tank;

The nozzle of the condensed water pipe is located at the lower part of the condensed water storage tank;

The condensed water flows out from the lower part of the condensed water storage tank through the condensed water pipe after being filtered by the secondary purification filter.

As a preference, the motor water-cooled cooler cycle consumption reduction and energy saving device also includes:

A recycling pool is connected to the condensed water storage tank through a recycling pipe;

The circulation recovery pipe is provided with a third manual gate valve.

As a preference, the condensed water pipe is provided with a check valve, a pipeline pump set and a fourth manual gate valve;

The check valve is located between the condensed water storage tank and the fourth manual gate valve;

The fourth manual gate valve is located between the pipeline pump set and the water-cooled cooler.

Preferably, the condensed water pipe is also provided with a fifth manual gate valve and a sixth manual gate valve;

The fifth manual gate valve is located between the check valve and the pipeline pump set;

The sixth manual gate valve is located between the pipeline pump set and the fourth manual gate valve.

As a preference, the condensed water storage tank is provided with a liquid level gauge and an interlock control unit;

The liquid level gauge can detect the liquid level of the condensed water storage tank and generate a liquid level value signal;

The interlock control unit is connected with the liquid level gauge and the pipeline pump set, and controls the start or stop of the pipeline pump set after receiving the liquid level value signal.

Preferably, the temperature of the condensed water is 5-10°C;

The temperature of the cooling water in the water inlet pipe is 10°C.

One or more technical solutions provided in this application have at least the following technical effects or advantages:

Since the condensed water outlet of the evaporator is connected to the condensed water storage tank, the condensed water storage tank is connected to the water inlet pipe of the water-cooled cooler through the condensed water pipe, and the condensed water separated by the evaporator with a temperature lower than 30°C is used as water cooling Adjust the water source at the inlet of the cooler to reduce the temperature of the water source at the inlet of the cooler, thereby improving the working efficiency of the cooler. Since the condensed water is soft water, it can prolong the fouling cycle of the water-cooled cooler. In this way, the technical problem of the poor cooling effect of the water-cooled cooler in the prior art, which leads to safety hazards in the blower unit, is effectively solved, and the cooling effect of the water-cooled cooler is improved, the service life of the synchronous motor is improved, and the failure of the blower is reduced. The technical effect of efficiency and maintenance cost.

Description of drawings

Fig. 1 is a schematic structural diagram of a motor water-cooled cooler cycle consumption reduction and energy saving device provided by an embodiment of the utility model;

Fig. 2 is a schematic structural diagram of the filter screen in Fig. 1 .

(The components represented by each label in the diagram are: 1 normal temperature water pipe, 2 first manual gate valve, 3 water inlet pipe, 4 water-cooled cooler, 5 second manual gate valve, 6 fourth manual gate valve, 7 condensate water pipe, 8 The fifth manual gate valve, 9 pipeline pump group, 10 the sixth manual gate valve, 11 check valve, 12 recycling pool, 13 the third manual gate valve, 14 secondary purification filter, 15 condensed water storage tank, 16 filter screen, 17 barrel, 18 evaporators, 19 synchronous motors)

detailed description

The embodiment of the present application provides a water-cooled cooler circulation consumption reduction energy-saving device for motors, which solves or partially solves the technical problem that the cooling effect of the water-cooled cooler in the prior art is not good, which leads to the safety hazard of the blower unit. The condensed water outlet of the evaporator is connected to the condensed water storage tank, and the condensed water storage tank is connected to the water inlet pipe of the water-cooled cooler through the condensed water pipe, which improves the cooling effect of the water-cooled cooler, improves the service life of the synchronous motor, and reduces the blower The technical effect of failure rate and maintenance cost.

Referring to accompanying drawing 1, the present application provides a kind of electric motor water-cooled cooler cycle consumption reduction energy-saving device, is used for cooling the synchronous motor of blast furnace blower, the motor water-cooled cooler cycle consumption reduction energy-saving device includes: water-cooled cooler 4. The evaporator 18 and the condensed water storage tank 15; the water-cooled cooler 4 is connected to the synchronous motor 19, and is provided with a water inlet pipe 3 and a water outlet pipe; the evaporator 18 condenses to produce condensed water with a temperature less than 30°C; the condensed water storage tank 15 The inlet is connected with the condensed water outlet at the bottom of the evaporator 18 through a pipeline, and the outlet is connected with the water inlet pipe 3 through the condensed water pipe 7 .

Among them, the condensed water separated from the evaporator 18 with a temperature lower than 30°C is used as the inlet water source of the water-cooled cooler 4 to reduce the temperature of the inlet water source of the water-cooled cooler 4, thereby improving the working efficiency of the cooler. The water is soft water, which can prolong the fouling period of the water-cooled cooler 4. In this way, it solves the problem that the water-cooled cooler 4 of the synchronous motor has poor cooling effect in summer, and the scaling, leakage, and inlet The problem of long-term high water temperature operation.

Further, the condensation water pipe 7 is connected to the water inlet pipe 3 through a three-way pipe; the three-way pipe is connected to the normal temperature water pipe 1 . The normal temperature water pipe 1 is provided with a first manual gate valve 2, which is used to control the water volume of the normal temperature cooling water leading into the water inlet pipe 3; the condensed water pipe 7 is provided with a check valve 11, a pipeline pump unit 9 and a fourth manual gate valve 6; the check valve 11 is located between the condensed water storage tank 15 and the fourth manual gate valve 6 to prevent the condensed water from flowing backward; the fourth manual gate valve 6 is located between the pipeline pump unit 9 and the water-cooled cooler 4 . By manually adjusting the opening of the fourth manual gate valve 6, the amount of condensed water flowing into the water inlet pipe 3 is controlled. After mixing with cooling water at normal temperature, the set temperature value is reached, so as to realize the adjustment and intervention control of the inlet water temperature of the water inlet pipe 3 .

The outlet pipe is provided with a second manual gate valve 5, the second manual gate valve 5 is fixed on the outlet pipe through flanges and screws, and operates simultaneously with the first manual gate valve 2 and the fourth manual gate valve 6 to realize the water cooling in the cooler 4. Circulation of cooling water or stop.

Further, the motor water-cooled cooler cycle consumption reduction energy-saving device also includes: a primary purification filter and a secondary purification filter 14; the primary purification filter is arranged between the evaporator 18 and the condensed water storage tank 15; The condensed water produced by the device 18 enters the upper part of the condensed water storage tank 15 after being filtered by a primary purification filter. The secondary purification filter 14 is arranged inside the condensed water storage tank 15; the mouth of the condensed water pipe 7 is positioned at the bottom of the condensed water storage tank 15; It flows out through the condensate pipe 7. A primary purification filter and a secondary purification filter 14 are provided to produce water purification and filtration for the inlet water source of the water inlet pipe 3, prolong the fouling cycle inside the copper pipe in the water-cooled cooler 4, and meet the requirements of the water-cooled cooler 4. Water quality requirements.

Wherein, referring to accompanying drawing 2, primary purification filter comprises cylinder 17 and filter screen 16, and filter screen 16 is the filter screen of circular hole mesh structure; Secondary purification filter 14 is also the filter screen of circular hole mesh structure, and One side of the filter screen 16 of the primary purification filter is fixedly connected with the cylinder 17 by screws, and the other side is fixed by internal positioning pins; the secondary purification filter 14 is fixedly connected with the condensed water storage tank 15 by screws, which is convenient for maintenance and replacement .

Further, the energy-saving device for water-cooled motor circulation also includes: a circulation recovery pool 12 connected to the condensed water storage tank 15 through a circulation recovery pipe; the circulation recovery pipe is provided with a third manual gate valve 13 . The third manual gate valve 13 is fixed on the circulation recovery pipe through flanges and screws. When the cooler equipment fails, the third manual gate valve 13 is opened to realize energy-saving recovery or safety adjustment of the condensed water cycle. By arranging the recycling water pool 12, the replenishment water amount of the water station can be reduced, and the cost can be reduced.

Further, the condensed water pipe 7 is also provided with a fifth manual gate valve 8 and a sixth manual gate valve 10; the fifth manual gate valve 8 is located between the check valve 11 and the pipeline pump unit 9; the sixth manual gate valve 10 is located between the pipeline pump unit 9 and Between the fourth manual gate valve 6. The fifth manual gate valve 8 and the sixth manual gate valve 10 are normally open manual gate valves, which are fixed on the condensate pipe 7 by flanges and screws, and can facilitate maintenance and replacement of the pipeline pump unit 9 after they are closed.

Further, the condensed water storage tank 15 is provided with a liquid level gauge 20 and an interlock control unit; the liquid level gauge 20 can detect the liquid level of the condensed water storage tank 15 and generate a liquid level value signal; the interlock control unit and the liquid level gauge 20 It is connected with the pipeline pump group 9, and controls the start or stop of the pipeline pump group 9 after receiving the liquid level value signal. The liquid level gauge 20 is a live contact liquid level gauge, and the electrical interlocking automatic control is realized through the interlocking control unit and the pipeline pump group 9. The specific process is: when the water level of the condensed water storage tank 15 is lower than the set lower limit, the interlocking The control unit sends a control command to the pipeline pump group 9, and controls the pipeline pump group 9 to stop working, so that the water level of the condensed water storage tank 15 is restored again, so as to prevent the pipeline pump group 9 from running without load and destroying the motor after the condensed water storage tank 15 is evacuated. harm. When the water level of the condensed water storage tank 15 is greater than the set upper limit, the interlock control unit sends a control command to the pipeline pump group 9 to control the pipeline pump group 9 to start working and send the condensed water into the water inlet pipe 3 to complete the whole system. water cycle.

Reasonably setting the temperature of the condensed water and the cooling water in the water inlet pipe 3 can ensure that the water-cooled cooler 4 is in a good working condition and obtain a good cooling effect. According to the actual production summary, the temperature of the condensed water is controlled at 5-10°C ; The temperature of the cooling water in the water inlet pipe 3 is controlled to be 10°C, and the water-cooled cooler 4 can obtain the best working efficiency.

The motor water-cooled cooler cycle consumption reduction energy-saving device uses the condensed water separated by the evaporator 18 at a temperature lower than 30 °C as the water-cooled cooler 4 inlet adjustment water source, and is soft water, so as to reduce the water-cooled cooler 4 The inlet The temperature of the water source prolongs the fouling period, thereby improving the working efficiency of the cooler; the automatic control of the condensed water level is realized through the liquid level gauge 20, the interlocking control unit and the pipeline pump group 9, and the first manual gate valve 2 and the fourth manual gate valve 6 Realize the artificial auxiliary adjustment of the inlet water temperature, which ensures the adjustability of the inlet water temperature, thereby improving the efficiency of the cooler, increasing the service life of the motor, and reducing the failure rate and maintenance cost of the synchronous motor 19 and the blower.

One or more technical solutions provided in this application have at least the following technical effects or advantages:

Owing to having adopted the condensed water outlet of evaporator 18 to be connected with condensed water storage tank 15, condensed water storage tank 15 is connected with the water inlet pipe 3 of water-cooled cooler 4 by condensed water pipe 7, the temperature that evaporator 18 condenses and separates is lower than The condensed water at 30°C is used as the inlet water source of the water-cooled cooler 4 to reduce the temperature of the inlet water source of the cooler, thereby improving the working efficiency of the cooler. Since the condensed water is soft water, the fouling period of the water-cooled cooler 4 can be extended. In this way, the poor cooling effect of the water-cooled cooler 4 in the prior art is effectively solved, which leads to the technical problem of potential safety hazards in the blower unit, and the cooling effect of the water-cooled cooler 4 is improved, the service life of the synchronous motor 19 is improved, and the Blower failure rate and technical effects on maintenance costs.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present utility model in detail. For the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (10)

1. A motor water-cooled cooler cycle consumption reduction energy-saving device, which is used for the cooling and cooling of the synchronous motor of the blast furnace blower, is characterized in that, the motor water-cooled cooler cycle consumption reduction energy-saving device comprises: A water-cooled cooler, connected to the synchronous motor, is provided with a water inlet pipe and a water outlet pipe; Evaporator, condensing to produce condensed water with a temperature less than 30°C; In the condensed water storage tank, the inlet is connected to the condensed water outlet at the bottom of the evaporator through a pipeline, and the outlet is connected to the water inlet pipe through a condensed water pipe. 2. The motor water-cooled cooler cycle consumption reduction and energy saving device according to claim 1, characterized in that, The condensation water pipe is connected with the water inlet pipe through a three-way pipe; The three-way pipe is connected with the normal temperature water pipe. 3. The motor water-cooled cooler cycle consumption reduction and energy saving device according to claim 2, characterized in that, The normal temperature water pipe is provided with a first manual gate valve for controlling the amount of normal temperature cooling water passing into the water inlet pipe; The water outlet pipe is provided with a second manual gate valve. 4. The energy-saving device for water-cooled electric motor cycle consumption reduction as claimed in claim 1, characterized in that, the energy-saving cycle energy-saving device for water-cooled electric motor cooler further comprises: a primary purification filter arranged between the evaporator and the condensed water storage tank; The condensed water generated by the evaporator enters the upper part of the condensed water storage tank after being filtered by the primary purification filter. 5. The energy-saving device for water-cooled electric motor cycle consumption reduction as claimed in claim 4, characterized in that the energy-saving cycle consumption reduction device for water-cooled electric motor cooler further comprises: A secondary purification filter is arranged inside the condensed water storage tank; The nozzle of the condensed water pipe is located at the lower part of the condensed water storage tank; The condensed water flows out from the lower part of the condensed water storage tank through the condensed water pipe after being filtered by the secondary purification filter. 6. The energy-saving device for water-cooled electric motor cycle consumption reduction according to claim 1, characterized in that, the energy-saving cycle consumption reduction device for water-cooled electric motor cooler further comprises: A recycling pool is connected to the condensed water storage tank through a recycling pipe; The circulation recovery pipe is provided with a third manual gate valve. 7. The motor water-cooled cooler cycle consumption reduction and energy saving device according to claim 1, characterized in that, The condensed water pipe is provided with a check valve, a pipeline pump unit and a fourth manual gate valve; The check valve is located between the condensed water storage tank and the fourth manual gate valve; The fourth manual gate valve is located between the pipeline pump set and the water-cooled cooler. 8. The motor water-cooled cooler cycle consumption reduction and energy saving device according to claim 7, characterized in that, The condensed water pipe is also provided with a fifth manual gate valve and a sixth manual gate valve; The fifth manual gate valve is located between the check valve and the pipeline pump set; The sixth manual gate valve is located between the pipeline pump set and the fourth manual gate valve. 9. The motor water-cooled cooler cycle consumption reduction and energy saving device according to claim 7, characterized in that, The condensed water storage tank is provided with a liquid level gauge and an interlock control unit; The liquid level gauge can detect the liquid level of the condensed water storage tank and generate a liquid level value signal; The interlock control unit is connected with the liquid level gauge and the pipeline pump set, and controls the start or stop of the pipeline pump set after receiving the liquid level value signal. 10. The motor water-cooled cooler cycle consumption reduction and energy saving device according to claim 1, characterized in that, The temperature of the condensed water is 5-10°C; The temperature of the cooling water in the water inlet pipe is 10°C.