CN108736765B

CN108736765B - Automatic control water-cooling heat dissipation device of frequency conversion all-in-one machine

Info

Publication number: CN108736765B
Application number: CN201810492097.0A
Authority: CN
Inventors: 张红娟; 靳剑兵; 靳宝全; 田振东; 郭凌龙; 杜亚玲; 高妍; 黄飞; 白清; 刘昕
Original assignee: Taiyuan University of Technology
Current assignee: Taiyuan University of Technology
Priority date: 2018-05-22
Filing date: 2018-05-22
Publication date: 2021-08-10
Anticipated expiration: 2038-05-22
Also published as: CN108736765A

Abstract

The invention discloses a self-control water-cooling heat dissipation device of a frequency conversion all-in-one machine, which can realize real-time monitoring and automatic control of the whole water-cooling heat dissipation system through a main control panel; the main control board collects data of the temperature sensor, the pressure sensor and the water level sensor, and can realize the functions of adjusting temperature, controlling pressure, switching a circulating pump, automatically supplementing liquid and the like; when the heat dissipation system breaks down, the alarm can be given to stop, so that the frequency converter is prevented from being damaged due to overheating; the motor adopts a water cooling mode to cool the front end cover, the rear end cover and the motor body simultaneously, so that the cooling efficiency is greatly improved, and the volume of the motor is reduced; a series waterway is used for cooling the frequency converter and the motor at the same time, so that the uniform heat dissipation is ensured; the combination of the plate heat exchanger and the Freon refrigerator can realize quick heat dissipation, and can regulate and control the temperature, so that the cooling water is prevented from being overheated, the heat dissipation efficiency is reduced, or the supercooling water is condensed into water drop short-circuit equipment on the surface of a water pipe.

Description

Automatic control water-cooling heat dissipation device of frequency conversion all-in-one machine

Technical Field

The invention belongs to the technical field of coal mine electrical equipment, and particularly relates to a self-control water-cooling heat dissipation device of a frequency conversion all-in-one machine.

Background

Due to the development of the frequency conversion technology and the advantage of frequency conversion starting, more and more underground coal mine equipment is driven by a frequency conversion all-in-one machine. However, in the using process, the heat generated by the power element of the frequency converter cannot be exchanged in time due to the low heat dissipation efficiency of the traditional air-cooled heat dissipation system, so that the frequency converter is often damaged, and the normal production work is affected. And the frequency conversion all-in-one machine adopting air cooling for heat dissipation has larger volume and does not meet the requirement of the underground mine on the volume of equipment. Meanwhile, the existing water cooling device cannot monitor and control temperature, pressure and running state, and the heat dissipation effect is not ideal.

Disclosure of Invention

The invention provides an automatic control water-cooling heat dissipation device of a frequency conversion all-in-one machine, which aims to solve the problems that the traditional air-cooling heat dissipation device is low in heat dissipation efficiency and large in size, and the existing water-cooling heat dissipation device cannot monitor and control the temperature, the pressure and the running state of a heat dissipation system in real time.

The invention is realized by the following technical scheme: the utility model provides a frequency conversion all-in-one automatic control water-cooling heat abstractor, includes: the device comprises a circulating pump I, a circulating pump II, an electromagnetic valve I, an electromagnetic valve II, a check valve I, a gate valve I, a filter I, a gate valve II, a filter II, a water replenishing tank, a filter III, a water replenishing pump, an electric three-way valve, a check valve II, a check valve III, a water pipe I, a water pipe II, a water pipe III, an electromagnetic air release valve, a water level sensor, a water exchanger, a temperature sensor, a water cooling plate, a water cooling motor, a cooling water pipe I, a cooling water pipe II, a plate heat exchanger, a cooling water pipe III, a Freon refrigerator, a pressure sensor and a main control plate;

the electromagnetic valve I is connected to one side of a circulating pump I, the electromagnetic valve II is connected to one side of a circulating pump II, the circulating pump I and the circulating pump II are connected in parallel and are standby mutually, the other side of the circulating pump I is connected with a check valve I, a gate valve I and a filter I are connected with a gate valve II and a filter II in parallel, one end of the parallel structure is connected with the check valve I, the other end of the parallel structure is connected with an electric three-way valve, the electric three-way valve is connected with a water exchanger through a water pipe I, the water pipe I is provided with the check valve II, and the water exchanger is provided with an electromagnetic deflation valve and a water level sensor; the water replenishing tank is connected with a water replenishing pump through a No. III filter, the water replenishing pump is connected with a water exchanger through a No. III check valve and a No. II water pipe, and the water exchanger is connected with a water inlet of a water cooling plate of the frequency converter through a No. III water pipe; no. I water pipe and No. II water pipe mouth of pipe set up in water interchanger top, the mouth of pipe of No. III water pipe sets up in water interchanger bottom, I condenser tube one end connects in the delivery port of water-cooling board, install temperature sensor on it, I condenser tube's the other end gets into plate heat exchanger, connect in water-cooled machine's rear end lid water inlet after carrying out the heat transfer circulation, water-cooled machine's motor delivery port department has connect No. II condenser tube, the No. II condenser tube other end gets into plate heat exchanger and carries out the heat transfer circulation, and with No. I solenoid valve, No. II solenoid valve are connected, and be equipped with pressure sensor on No. II condenser tube, the freon refrigerator links to.

Wherein, the main control board is connected with circulating pump I, circulating pump II, solenoid valve I, solenoid valve II, electronic three-way valve, electromagnetism bleed valve, level sensor, moisturizing pump, temperature sensor, pressure sensor, freon refrigerator, realizes water cooling system's automatic control.

Wherein, the water-cooling board includes water-cooling board water inlet, water-cooling board delivery port, cooling tube, base, and the cooling tube adopts the material that the radiating efficiency is high, and the material that the base used will compromise heat dissipation and higher intensity, and the cooling tube inlays in the base, and the water inlet waterway is the same with water outlet waterway route, guarantees evenly to dispel the heat.

Wherein, the water-cooled machine includes the inner shell, the outer shell, the front end housing, the rear end cap, the inner shell, the outer shell, the front end housing, form the cavity between the rear end cap, separate by the baffle between, form the water course, No. I baffle, No. II baffles are separated by 180 and arrange, length equals the distance between the front and rear end cap, all the other baffle length weak point are in the distance between the front and rear end cap, two adjacent baffles weld respectively before, on the rear end cap, leave even interval between the baffle, rear end cap water inlet has been opened to rear end cap outside top, rear end cap inboard below is opened there is No. I water inlet of motor, front end cap inboard top is opened there is the front end cap water inlet, rear end cap inboard top welding outlet pipe, it connects in the motor delivery port to pass the rear end cap.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a self-control water-cooling heat dissipation device of a frequency conversion all-in-one machine, which can realize real-time monitoring and automatic control of the whole water-cooling heat dissipation system through a main control panel; the main control board collects data of the temperature sensor, the pressure sensor and the water level sensor, and can realize the functions of adjusting temperature, controlling pressure, switching a circulating pump, automatically supplementing liquid and the like; when the heat dissipation system breaks down, the alarm can be given to stop, so that the frequency converter is prevented from being damaged due to overheating; the motor adopts a water cooling mode to cool the front end cover, the rear end cover and the motor body simultaneously, so that the cooling efficiency is greatly improved, and the volume of the motor is reduced; a series waterway is used for cooling the frequency converter and the motor at the same time, so that the uniform heat dissipation is ensured; the combination of the plate heat exchanger and the Freon refrigerator can realize quick heat dissipation, and can regulate and control the temperature, so that the cooling water is prevented from being overheated, the heat dissipation efficiency is reduced, or the supercooling water is condensed into water drop short-circuit equipment on the surface of a water pipe.

Drawings

FIG. 1 is a schematic structural diagram of a water-cooling heat dissipation device of a frequency conversion all-in-one machine provided by the invention;

FIG. 2 is a schematic structural diagram of a water cooling plate in the water cooling heat dissipation device of the frequency conversion all-in-one machine provided by the invention;

FIG. 3 is a schematic front view of a water cooling water flow of a motor shell of the water cooling heat dissipation device of the frequency conversion all-in-one machine provided by the invention;

FIG. 4 is a schematic rear view of a water cooling water flow of a motor shell of the water cooling heat dissipation device of the frequency conversion all-in-one machine provided by the invention;

FIG. 5 is a schematic view of a motor shell of a water-cooling heat dissipation device of a frequency conversion all-in-one machine provided by the invention.

In the figure: no. 1-I circulating pump, No. 2-II circulating pump, No. 3-I solenoid valve, No. 4-II solenoid valve, No. 5-I check valve, No. 6-I gate valve, No. 7-I filter, No. 8-II gate valve, No. 9-II filter, No. 10-make-up water tank, No. 11-III filter, No. 12-make-up water pump, 13-electric three-way valve, No. 14-II check valve, No. 15-III check valve, No. 16-I water pipe, No. 17-II water pipe, No. 18-III water pipe, 19-electromagnetic air release valve, 20-water level sensor, 21-water exchanger, 22-temperature sensor, 23-water cooling plate, 231-water cooling plate water inlet, 232-water cooling plate water outlet, 233-cooling pipe, 234-base, 24-water cooling motor, 241-rear end cover, 242-front end cover, 243-rear end cover water inlet, 244-motor I water inlet, 245-front end cover water inlet, 246-motor II water inlet, 247-water outlet, 248-motor water outlet, 249-outer shell, 2410-inner shell, 2411-cavity, 2412-I clapboard, 2413-II clapboard, 25-I cooling water pipe, 26-II cooling water pipe, 27-plate heat exchanger, 28-III cooling water pipe, 29-freon refrigerator, 30-pressure sensor and 31-main control board.

Detailed Description

The technical solution of the present invention will be further described in more detail with reference to the following embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a water-cooling heat dissipation device of a frequency conversion all-in-one machine provided by the invention. The device includes: no. I circulating pump 1, No. II circulating pump 2, No. I solenoid valve 3, No. II solenoid valve 4, No. I check valve 5, No. I gate valve 6, No. I filter 7, No. II gate valve 8, No. II filter 9, moisturizing case 10, No. III filter 11, moisturizing pump 12, electric three-way valve 13, No. II check valve 14, No. III check valve 15, No. I water pipe 16, No. II water pipe 17, No. III water pipe 18, electromagnetism bleed valve 19, level sensor 20, water interchanger 21, temperature sensor 22, water-cooling board 23, water-cooling motor 24, No. I condenser tube 25, No. II condenser tube 26, plate heat exchanger 27, No. III condenser tube 28, freon refrigerator 29, pressure sensor 30 and main control board 31.

Wherein, circulating pump 1 and circulating pump 2 parallel connection No. II are each other for reserve, and the operation is switched to the regular cycle, guarantees that two circulating pumps can all be in the state of normal operating. No. I solenoid valve 3 connects before No. I circulating pump 1, and No. II solenoid valve 4 connects before No. II circulating pump 2, the direction of control rivers. No. I check valve 5 guarantees that rivers unidirectional flow can not flow backward the circulating pump. No. I gate valve 6, No. I filter 7 and No. II gate valve 8, No. II filter 9 are parallelly connected, and two filters are each other for reserve, and the filter clearance of conveniently dismantling under the condition that does not influence water cooling plant normal operating is changed. An electric three-way valve 13 is connected behind the water cooling device, the water cooling device is connected with a water exchanger 21 through a water pipe 16I, a check valve 14 II is arranged on the water pipe 16I, the water exchanger 21 is provided with an electromagnetic air release valve 19 and a water level sensor 20, a water replenishing tank 10 is connected with a water replenishing pump 12 through a filter 11 III, the water replenishing pump 12 is connected with the water exchanger 21 through a check valve 15 III and a water pipe 17 II, the water exchanger 21 is connected with a water inlet 231 of a water cooling plate 23 of a frequency converter through a water pipe 18 III, the water pipe 16I and the water pipe 17 II are connected with the top of the water exchanger 21, the water pipe 18 III is communicated with the bottom of the water exchanger 21, a cooling water pipe 25I is connected with a water outlet 232 of the water cooling plate 23 and is provided with a temperature sensor 22, the cooling water pipe 25I enters a plate type heat exchanger 27 to be circularly connected with a water inlet 243 of a rear end cover of the water cooling motor 24, a motor water outlet 248 of the water cooling motor 24 is connected with a cooling water pipe 26 II, no. II condenser tube 26 gets into plate heat exchanger 27 and is connected with No. I solenoid valve 3, No. II solenoid valve 4 after the circulation, and is equipped with pressure sensor 30 on No. II condenser tube 26, and freon refrigerator 26 passes through No. III condenser tube 28 and links to each other with plate heat exchanger 27. The main control board 31 is connected with the circulating pump 1I, the circulating pump 2 II, the electromagnetic valve 3I, the electromagnetic valve 4 II, the electric three-way valve 13, the electromagnetic deflation valve 19, the water level sensor 20, the water replenishing pump 12, the temperature sensor 22, the pressure sensor 30 and the Freon refrigerator 26, and controls the action of each device through the data of the collecting and processing sensor. When the engine runs for the first time, the electric three-way valve 13 is closed, the electromagnetic air release valve 19 is opened, and the water replenishing pump 12 works. When the water level in the water exchanger 21 reaches the position 4/5, the electromagnetic air release valve 19 is closed, the solenoid valve 3I and the valves (i) and (iii) of the electric three-way valve 13 are opened, and water starts to be supplied to the water cooling pipeline. When water flows through the electric three-way valve 13, the valve III is closed, the valve II is opened, and at the moment, water supply of the water cooling pipeline is finished. The water replenishing pump 12 is closed, and the cooling water in the water cooling pipeline of the No. I circulating pump 1 is opened to start circulation. Cooling water flows into the water cooling plate 23 through the water exchanger 21, flows out from a water cooling plate water outlet 232 after the frequency converter is cooled, the temperature sensor 22 detects the temperature of the cooling water, if the temperature is too high, the main control panel 31 controls the Freon refrigerator 29 to strengthen refrigeration, and if the temperature is too low, the refrigeration power is reduced, so that the temperature of the frequency converter is maintained at a proper value. And if the temperature of the cooling water is abnormal, the main control board controls the all-in-one machine to stop running. The cooling water flows into the plate heat exchanger 27 to be cooled and then flows into the water-cooling motor 24 to be cooled. The cooling water flows out from the water outlet 248 of the water-cooling motor and then enters the plate heat exchanger 27 again for cooling. The pressure sensor 30 monitors the pressure throughout the pipeline. Because the volume of the cooling water changes after being heated, the pressure in the pipeline also changes. If the pressure is in the normal range, the pressure in the pipeline can be adjusted by controlling the electromagnetic air release valve 19, and when the pressure in the pipeline is abnormal, the main control board controls the all-in-one machine to stop running. The water exchanger 21 can ensure that no air exists in the pipeline, and the cooling efficiency is improved. When the water level sensor 20 detects that the water level in the water exchanger 21 is lower than 1/5, the main control panel 31 controls the circulation pump to stop working, closes the electric three-way valve 13, opens the electromagnetic air release valve 19, and operates the water replenishing pump 12 to add water into the water exchanger 21. When the water level reaches 4/5, the water replenishing pump 12 stops working, the electromagnetic air release valve 19 is closed, the electric three-way valve 13 is opened, the circulating pump is restarted, the water replenishing is completed, and the system returns to normal operation. The whole process is short, and the normal operation of the all-in-one machine cannot be influenced. The whole water channel adopts a series connection mode, and cooling water can flow through each position.

The water-cooling plate 23 comprises a water-cooling plate water inlet 231, a water-cooling plate water outlet 232, a cooling pipe 233 and a base 234, wherein the cooling pipe 233 is made of a material with high heat dissipation efficiency, the material used by the base 234 is heat dissipation and high strength, the cooling pipe 233 is embedded in the base 234, and a water inlet waterway is the same as a water outlet waterway, so that uniform heat dissipation is ensured. The cooling pipe can adjust the density degree of arranging according to the condition of generating heat of the power element in the frequency converter, and the radiating efficiency is improved. The water-cooled motor 24 comprises an inner shell 2410, an outer shell 249, a front end cover 242 and a rear end cover 241, wherein a cavity 2411 is formed between the inner shell 2410, the outer shell 249, the front end cover 242 and the rear end cover 241 and is partitioned by partition plates to form a water channel, a No. I partition plate 2412 and a No. II partition plate 2413 are arranged at an interval of 180 degrees and are equal to the distance between the front end cover and the rear end cover, the length of the rest partition plates is shorter than the distance between the front end cover and the rear end cover, two adjacent partition plates are respectively welded on the front end cover and the rear end cover, and uniform intervals are reserved between the partition plates, as shown in figure 5. A rear end cover water inlet 243 is formed in the upper portion of the outer side of the rear end cover 241, a motor I-shaped water inlet 244 is formed in the lower portion of the inner side of the rear end cover 241, and a front end cover water inlet 245 is formed in the upper portion of the inner side of the front end cover 242, as shown in fig. 3. The lower part of the inner side of the front end cover 242 is provided with a No. II motor water inlet 246, the upper part of the inner side of the rear end cover is welded with a water outlet pipe 247, and the water outlet pipe penetrates through the rear end cover to be connected with a motor water outlet 248, as shown in figure 4. Cooling water flows into the motor rear end cover 241 from the rear end cover water inlet 243, then flows into the motor body water channel from the motor I water inlet 244 to cool the half body of the motor, then enters the motor front end cover 242 through the front end cover water inlet 245 to be cooled, then enters the motor body water channel through the motor II water inlet 246 to cool the other half of the motor, and finally flows into the motor water outlet 248 through the water outlet pipe 247 to finish the cooling of the motor.

Compared with the prior art, the automatic control water-cooling heat dissipation device of the frequency conversion all-in-one machine can realize real-time monitoring and automatic control of the whole water-cooling heat dissipation system through the main control panel; the main control board collects data of the temperature sensor, the pressure sensor and the water level sensor, and can realize the functions of adjusting temperature, controlling pressure, switching a circulating pump, automatically supplementing liquid and the like; when the heat dissipation system breaks down, the alarm can be given to stop, so that the frequency converter is prevented from being damaged due to overheating; the motor adopts a water cooling mode to cool the front end cover, the rear end cover and the motor body simultaneously, so that the cooling efficiency is greatly improved, and the volume of the motor is reduced; a series waterway is used for cooling the frequency converter and the motor at the same time, so that the uniform heat dissipation is ensured; the combination of the plate heat exchanger and the Freon refrigerator can realize quick heat dissipation, and can regulate and control the temperature, so that the cooling water is prevented from being overheated, the heat dissipation efficiency is reduced, or the supercooling water is condensed into water drop short-circuit equipment on the surface of a water pipe.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a frequency conversion all-in-one automatic control water cooling plant which characterized in that: the method comprises the following steps: a No. I circulating pump (1), a No. II circulating pump (2), a No. I electromagnetic valve (3), a No. II electromagnetic valve (4), a No. I check valve (5), a No. I gate valve (6), a No. I filter (7), a No. II gate valve (8), a No. II filter (9), a water replenishing tank (10), a No. III filter (11), a water replenishing pump (12), an electric three-way valve (13), a No. II check valve (14) and a No. III check valve (15), the system comprises a water pipe I (16), a water pipe II (17), a water pipe III (18), an electromagnetic air release valve (19), a water level sensor (20), a water exchanger (21), a temperature sensor (22), a water cooling plate (23), a water cooling motor (24), a cooling water pipe I (25), a cooling water pipe II (26), a plate heat exchanger (27), a cooling water pipe III (28), a Freon refrigerator (29) and a pressure sensor (30);

wherein, solenoid valve (3) No. I connects in circulating pump (1) one side No. I, solenoid valve (4) No. II connects in circulating pump (2) one side No. II, circulating pump (1) No. I and circulating pump (2) parallel connection No. II, each other is reserve, check valve (5) No. I is all connected to the opposite side, gate valve (6) No. I, filter (7) No. II gate valve (8), filter (9) No. II connects in parallel, check valve (5) No. I is connected to one end of parallel structure, electric three-way valve (13) is connected to the other end, electric three-way valve (13) link to each other with water exchanger (21) through water pipe (16) No. I, check valve (14) No. II is equipped with on water pipe (16), electromagnetic bleed valve (19) and level sensor (20) are equipped with water exchanger (21); the water replenishing tank (10) is connected with a water replenishing pump (12) through a No. III filter (11), the water replenishing pump (12) is connected with a water exchanger (21) through a No. III check valve (15) and a No. II water pipe (17), and the water exchanger (21) is connected with a water inlet (231) of a water cooling plate of the frequency converter through a No. III water pipe (18); the orifices of the No. I water pipe (16) and the No. II water pipe (17) are arranged at the top of the water exchanger (21), the orifice of the No. III water pipe (18) is arranged at the bottom of the water exchanger (21), one end of the No. I cooling water pipe (25) is connected with a water outlet (232) of the water cooling plate (23), a temperature sensor (22) is arranged on the cooling water pipe, the other end of the No. I cooling water pipe (25) enters a plate type heat exchanger (27) and is connected with a rear end cover water inlet (243) of a water cooling motor (24) after heat exchange circulation is carried out, a No. II cooling water pipe (26) is connected at a motor water outlet (248) of the water cooling motor (24), the other end of the No. II cooling water pipe (26) enters the plate type heat exchanger (27) for heat exchange circulation, and is connected with solenoid valve (3) No. I, solenoid valve (4) No. II, and is equipped with pressure sensor (30) on No. II cooling water pipe (26), and freon refrigerator (29) link to each other with plate heat exchanger (27) through No. III cooling water pipe (28).

2. The automatic control water cooling device of the frequency conversion all-in-one machine as claimed in claim 1, characterized in that: still include main control board (31), main control board (31) and No. I circulating pump (1), No. II circulating pump (2), No. I solenoid valve (3), No. II solenoid valve (4), electronic three-way valve (13), electromagnetism bleed valve (19), level sensor (20), moisturizing pump (12), temperature sensor (22), pressure sensor (30), freon refrigerator (26) carry out signal connection to carry out automatic control.

3. The automatic control water cooling device of the frequency conversion all-in-one machine as claimed in claim 1, characterized in that: the water cooling plate (23) comprises a water cooling plate water inlet (231), a water cooling plate water outlet (232), a cooling pipe (233) and a base (234), wherein the cooling pipe (233) is made of a high-heat-dissipation material, the base (234) is made of a material which can dissipate heat and has high strength, the cooling pipe (233) is embedded in the base (234), a water inlet channel is the same as a water outlet channel, and uniform heat dissipation is guaranteed.

4. The automatic control water cooling device of the frequency conversion all-in-one machine as claimed in claim 1, characterized in that: the water-cooled motor (24) comprises an inner shell (2410), an outer shell (249), a front end cover (242) and a rear end cover (241), a cavity (2411) is formed between the inner shell (2410), the outer shell (249), the front end cover (242) and the rear end cover (241), and is separated by a partition plate to form a water channel, a No. I partition plate (2412) and a No. II partition plate (2413) are arranged at an interval of 180 degrees, the length of the No. I partition plate is equal to the distance between the front end cover and the rear end cover, the length of the rest of the partition plates is shorter than the distance between the front end cover and the rear end cover, two adjacent partition plates are respectively welded on the front end cover and the rear end cover, a uniform interval is reserved between the partition plates, a rear end cover water inlet (243) is arranged above the outer side of the rear end cover (241), a No. I motor water inlet (244) is arranged below the inner side of the rear end cover (242), a front end cover water inlet (245) is arranged above the inner side of the front end cover (242), a No. II motor water inlet (246) is arranged below the inner side of the front end cover (242), a water outlet pipe (247) is welded above the inner side of the rear end cover and penetrates through the rear end cover to be connected to a water outlet (248) of the motor.