Cooling water tank circulating device for high-voltage motor

Abstract

The invention relates to the technical field of high-voltage motors, and discloses a cooling water tank circulating device for a high-voltage motor, which comprises a shell, a high-voltage motor body is fixedly mounted in the shell, the cooling water tank circulating device further comprises a plurality of cooling pipes fixedly mounted in the high-voltage motor body, one end of each cooling pipe is fixedly communicated with a main liquid inlet pipe, and the other end of each cooling pipe is fixedly communicated with a liquid outlet pipe. The end, away from the main liquid inlet pipe, of the cooling pipe fixedly communicates with a main liquid outlet pipe. The flowing state of the cooling liquid in each cooling pipe is changed by switching the flowing direction of the cooling liquid between the main connecting pipe and the auxiliary connecting pipe, so that the cooling liquid in the cooling pipes does not stop any more, a local heating area is rapidly cooled, emergency treatment can be carried out on emergencies under the condition that resource waste is reduced, and the working efficiency is improved. The high-voltage motor body is protected, the service life of the high-voltage motor body is prolonged, and the situation that the production efficiency is affected due to shutdown of the high-voltage motor body caused by continuous temperature rise of a local area is prevented.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high-voltage motors, in particular to a cooling water tank circulating device for a high-voltage motor. BACKGROUND

[0002] A high-voltage motor refers to an alternating current motor with a rated voltage of 3 kV or more, which is mainly used to drive large mechanical equipment (such as fans, pumps, compressors, rolling mills, etc.), and has the characteristics of large power (usually 200 kW or more), high efficiency (95% to 98%), stable speed, etc. High-voltage motors are mainly divided into water-cooled and air-cooled heat dissipation. Air-cooled heat dissipation is through external fans to force air convection to take away the heat on the surface of the motor, and water-cooled heat dissipation is through circulating cooling liquid (such as deionized water, ethylene glycol mixture or special anti-flame liquid) flowing in the internal or external cooling pipeline of the motor to directly absorb the heat generated by the stator and rotor.

[0003] Among them, when water-cooled heat dissipation is needed, the cooling liquid usually needs to circulate in the pipeline to take away the heat dissipated by the high-voltage motor. In this process, if the cooling liquid keeps flowing at a certain flow rate, there is a possibility that the cooling liquid will be discharged without being fully heated, causing resource waste. When the high-voltage motor is running, due to reasons such as short circuit between stator windings, loose stator core and damage and aging of the insulation layer, the cooling liquid flowing at a constant speed cannot cool the local temperature in time, causing the local temperature to continue to rise, accelerating the aging of the insulation material, reducing the running stability of the motor, increasing the failure rate, intensifying power consumption, directly affecting the energy efficiency of the production line, and affecting the normal progress of the production process. SUMMARY

[0004] The application provides a cooling water tank circulating device for a high-voltage motor, which has the function of real-time switching of the cooling liquid flow path according to the temperature change of the high-voltage motor body, so that the cooling liquid in the cooling pipe no longer stagnates due to the rotation of the adjustment ring, and the local temperature rise area is quickly cooled, thereby reducing resource waste and also making emergency treatment of sudden conditions, protecting the high-voltage motor body, prolonging the service life of the high-voltage motor body, and preventing the continuous temperature rise in the local area from causing the high-voltage motor body to stop and affecting the production efficiency. The advantages are used to solve the problem that when the high-voltage motor is cooled by the water-cooled device, the cooling liquid cannot be locally cooled due to the stable flow rate, which increases the failure rate and affects the energy efficiency of the production line.

[0005] To achieve the above object, the technical scheme adopted by the present application is as follows: a cooling water tank circulating device for a high-voltage motor, comprising a shell, a high-voltage motor body fixedly installed inside the shell, a plurality of cooling pipes fixedly installed inside the high-voltage motor body, one end of the cooling pipes being fixedly communicated with a main liquid inlet pipe, the end of the cooling pipes away from the main liquid inlet pipe being fixedly communicated with a main liquid outlet pipe, a refrigeration evaporator being fixedly installed on the top of the shell, a side of the refrigeration evaporator close to the main liquid inlet pipe being fixedly communicated with a secondary liquid outlet pipe, a main connecting pipe being fixedly connected to the end of the secondary liquid outlet pipe away from the refrigeration evaporator, a fixing ring being fixedly installed on the outer surface of one end of the high-voltage motor body close to the main liquid inlet pipe, the end of the main connecting pipe away from the secondary liquid outlet pipe being fixedly communicated with the fixing ring, a secondary connecting pipe being fixedly communicated with the bottom of the secondary liquid outlet pipe, a plurality of branch pipes being fixedly communicated with the end of the secondary connecting pipe away from the secondary liquid outlet pipe, the end of the branch pipes away from the secondary connecting pipe being fixedly communicated with the main liquid inlet pipe, a ball valve being fixedly installed at the intersection of the secondary liquid outlet pipe and the secondary connecting pipe, a temperature sensing ring being fixedly installed on the outside of the main liquid outlet pipe, a slide rod being slidingly installed on the top of the temperature sensing ring, the slide rod being in transmission connection with the ball valve for changing the flow direction of the cooling liquid, when the high-voltage motor body is locally heated, the transmission connection of the slide rod and the ball valve enables the cooling liquid to directly flow to the main liquid inlet pipe through the secondary connecting pipe and the branch pipes, so as to rapidly cool the high-voltage motor body.

[0006] Further, an adjusting ring is rotatably installed inside the fixing ring, a plurality of main through holes and secondary through holes are formed in the adjusting ring, and the adjusting ring is used for changing the flow state of the cooling liquid.

[0007] Further, the inside of the temperature sensing ring is filled with thermal expansion fluid, the thermal expansion fluid expands when heated to make the slide rod slide, a contact switch matched with the slide rod is fixedly installed on the inner side wall of the shell, and the contact switch is in electrical connection with the ball valve.

[0008] Further, the inner diameters of the main through holes and the secondary through holes are different, and the plurality of main through holes and the secondary through holes are in annular array cross distribution, so that the cooling liquid can indirectly enter the cooling pipes in a turbulent state when the main through holes and the secondary through holes switch through the main liquid inlet pipe.

[0009] Further, a servo motor is fixedly installed on the inner side wall of the shell, a gear is fixedly installed on the output end of the servo motor, a gear ring in meshing transmission with the gear is fixedly installed on the end of the adjusting ring away from the main liquid inlet pipe, and the gear, the gear ring and the adjusting ring are rotated by the output end of the servo motor.

[0010] Further, the plurality of cooling pipes are in annular array distribution, the cooling pipes are in wave shape arranged in arc shape, and the axis of the cooling pipes coincides with the axis of the high-voltage motor body, so that the high-voltage motor body is cooled by partition cooling through the arrangement of the cooling pipes.

[0011] Further, the high-voltage motor body is internally provided with a cooling groove for providing mounting space for the cooling pipe.

[0012] Further, the temperature sensing ring and the main liquid outlet pipe are filled with heat-conducting silica gel to prevent gaps between them from affecting the temperature detection effect.

[0013] Further, the fixing ring is internally provided with a mounting groove for providing mounting space for the adjusting ring and the gear ring.

[0014] Further, the main liquid outlet pipe is fixedly connected with a secondary liquid inlet pipe at an end away from the cooling pipe, and the secondary liquid inlet pipe is fixedly connected with the refrigeration evaporator at an end away from the main liquid outlet pipe, so that the cooling liquid in the cooling pipe after temperature rise flows into the refrigeration evaporator through the secondary liquid inlet pipe.

[0015] The present application has the following advantages:

[0016] The cooling water tank circulation device for the high-voltage motor provided by the present application can change the flow state of the cooling liquid in each cooling pipe by switching the flow direction of the cooling liquid between the main connecting pipe and the secondary connecting pipe when the high-voltage motor body has a local temperature rise, so that the cooling liquid in the cooling pipe no longer enters the fixing ring through the main connecting pipe, and the cooling liquid in the cooling pipe no longer stagnates due to the rotation of the adjusting ring, thereby quickly cooling the local temperature rise area, and making emergency treatment possible in the case of resource waste reduction, protecting the high-voltage motor body and prolonging the service life of the high-voltage motor body. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the provided drawings:

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0019] Figure 2 is a side view cross-sectional structural schematic diagram of the present application;

[0020] Figure 3 is a side view cross-sectional structural schematic diagram of the high-voltage motor body and the fixing ring of the present application;

[0021] Figure 4 is a side view cross-sectional structural schematic diagram of the high-voltage motor body and the fixing ring of the present application from another perspective;

[0022] Figure 5 Structure diagram of cooling pipe, main liquid inlet pipe and shunt pipe of the application;

[0023] Figure 6 Structure diagram of servo motor, gear and adjusting ring of the application.

[0024] In the figure: 1, shell; 2, high-voltage motor body; 201, cooling groove; 3, cooling pipe; 4, main liquid inlet pipe; 5, main liquid outlet pipe; 6, fixing ring; 7, adjusting ring; 8, main through hole; 801, auxiliary through hole; 9, temperature sensing ring; 10, sliding rod; 11, mounting groove; 12, servo motor; 13, gear; 14, gear ring; 15, refrigeration evaporator; 16, auxiliary liquid outlet pipe; 17, main connecting pipe; 18, auxiliary connecting pipe; 19, shunt pipe; 20, contact switch; 21, auxiliary liquid inlet pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0026] Reference Figures 1 to 6 A cooling water tank circulating device for a high-voltage motor, comprising a shell 1, a high-voltage motor body 2 is fixedly installed inside the shell 1, a cooling groove 201 is formed in the high-voltage motor body 2, a plurality of cooling pipes 3 are fixedly installed inside the cooling groove 201, the plurality of cooling pipes 3 are arranged in an annular array, the cooling pipes 3 are arranged in a wave shape in an arc shape, the axis of the cooling pipes 3 coincides with the axis of the high-voltage motor body 2, a refrigeration evaporator 15 is fixedly installed at the top of the shell 1, for storing and cooling the cooling liquid, one end of each of the cooling pipes 3 is fixedly communicated with a main liquid inlet pipe 4, the end of the main liquid inlet pipe 4 away from the cooling pipes 3 is fixedly communicated with the refrigeration evaporator 15, one end of each of the cooling pipes 3 away from the main liquid inlet pipe 4 is fixedly communicated with a main liquid outlet pipe 5, the end of the main liquid outlet pipe 5 away from the cooling pipes 3 is fixedly communicated with an auxiliary liquid inlet pipe 21, the end of the auxiliary liquid inlet pipe 21 away from the main liquid outlet pipe 5 is fixedly communicated with the refrigeration evaporator 15, when the high-voltage motor body 2 operates, the cooling liquid in the refrigeration evaporator 15 is pumped to the main liquid inlet pipe 4 by a liquid pump, the cooling liquid flows in the cooling pipes 3 and takes away the heat generated when the high-voltage motor body 2 operates, then the cooling liquid heated is flowed into the refrigeration evaporator 15 through the main liquid outlet pipe 5 and the auxiliary liquid inlet pipe 21, and is cooled by the refrigeration evaporator 15, so as to continue to circulate and flow to cool the high-voltage motor body 2.

[0027] The high-voltage motor body 2 is fixedly installed on the outer surface of one end of the main liquid inlet pipe 4, a fixed ring 6 is arranged on the outer surface of one end of the main liquid inlet pipe 4, the inside of the fixed ring 6 is provided with an installation groove 11, a plurality of main liquid inlet pipes 4 are fixedly communicated with the installation groove 11, the inside of the installation groove 11 is rotatably installed with an adjusting ring 7 on the inner wall of one end of the main liquid inlet pipe 4, a plurality of main through holes 8 and auxiliary through holes 801 which penetrate the adjusting ring 7 are arranged on the adjusting ring 7, a refrigeration evaporator 15 is fixedly communicated with a side of the fixed ring 6, a secondary liquid outlet pipe 16 is fixedly communicated with the side of the refrigeration evaporator 15, a main connecting pipe 17 is fixedly connected to one end of the secondary liquid outlet pipe 16 away from the refrigeration evaporator 15, one end of the main connecting pipe 17 away from the secondary liquid outlet pipe 16 is fixedly communicated with the fixed ring 6, the liquid pump pumps the cooling liquid in the refrigeration evaporator 15 into the inside of the fixed ring 6 through the secondary liquid outlet pipe 16 and the main connecting pipe 17, the cooling liquid flows to the main liquid inlet pipe 4 through the main through hole 8 and the auxiliary through hole 801 in the installation groove 11, and then flows into the cooling pipe 3, wherein a plurality of main through holes 8 and auxiliary through holes 801 are arranged in a ring array and cross distribution, but there is a part on the adjusting ring 7 which is not provided with the main through hole 8 and the auxiliary through hole 801, so that when the adjusting ring 7 rotates, one of the main liquid inlet pipes 4 will be blocked, therefore, when the main liquid inlet pipe 4 coincides with the main through hole 8 or the auxiliary through hole 801, the cooling liquid can flow into the cooling pipe 3, if the main liquid inlet pipe 4 is blocked by the part on the adjusting ring 7 which is not provided with the main through hole 8 or the auxiliary through hole 801, the cooling liquid in the corresponding cooling pipe 3 will not flow, but stagnate in the inside of the cooling pipe 3, when the main liquid inlet pipe 4 coincides with the main through hole 8 or the auxiliary through hole 801 again, the cooling liquid continues to flow, the stagnation of the cooling liquid in the cooling pipe 3 enables it to fully absorb the heat generated by the operation of the high-voltage motor body 2, which effectively reduces the resource waste that may occur when the cooling liquid flows too fast, reduces energy consumption, and avoids excessive power load caused by the cooling liquid flowing too fast.

[0028] The inside wall of the shell 1 is fixedly installed with a servo motor 12, the output end of the servo motor 12 is fixedly installed with a gear 13, the end of the adjusting ring 7 away from the main liquid inlet pipe 4 is fixedly installed with a gear ring 14 which is meshed and driven with the gear 13, when the high-voltage motor body 2 operates, the output end of the servo motor 12 drives the gear 13 to rotate, the gear 13 drives the gear ring 14 and the adjusting ring 7 to rotate through meshing and driving, and then the main through hole 8 on the adjusting ring 7 coincides with or is staggered with the main liquid inlet pipe 4.

[0029] The inner diameters of the main through hole 8 and the auxiliary through hole 801 are different, so when the adjusting ring 7 rotates, the cooling liquid flows into the inside of the cooling pipe 3 through the main liquid inlet pipe 4, and in the process of switching the main through hole 8 and the auxiliary through hole 801, the cooling liquid can indirectly enter the cooling pipe 3 in a turbulent state, thereby flushing away the bubbles generated on the inner wall of the cooling pipe 3 due to the heating and temperature rise of the cooling liquid, the removal of the bubbles reduces the gas film thermal resistance, improves the heat exchange efficiency of the cooling water and the pipe wall, and also flushes the inner wall of the pipeline, reduces the deposition of scale, microbial membrane and other impurities, maintains the cooling efficiency for a long time, and prolongs the service life of the cooling pipe 3.

[0030] The bottom of the auxiliary liquid outlet pipe 16 is fixedly communicated with an auxiliary connecting pipe 18, a plurality of shunt pipes 19 are fixedly installed at the end of the auxiliary connecting pipe 18 away from the auxiliary liquid outlet pipe 16, and the end of the shunt pipe 19 away from the auxiliary connecting pipe 18 is fixedly communicated with the corresponding main liquid inlet pipe 4, wherein a ball valve is fixedly communicated at the intersection of the auxiliary liquid outlet pipe 16 and the auxiliary connecting pipe 18, and the ball valve allows the cooling liquid flowing out of the auxiliary liquid outlet pipe 16 to flow to the main connecting pipe 17 or the auxiliary connecting pipe 18 at a time, and the two cannot be connected at the same time.

[0031] A temperature sensing ring 9 is fixedly installed on the outside of the main liquid outlet pipe 5, the inside of the temperature sensing ring 9 is filled with thermal expansion fluid, a sliding rod 10 is slidingly installed on the top of the temperature sensing ring 9, a contact switch 20 matched with the sliding rod 10 is fixedly installed on the inner side wall of the shell 1, and the contact switch 20 is electrically connected. When the high-voltage motor body 2 operates, the local temperature of the fault area will be higher than the normal area temperature due to the turn-to-turn short circuit of the stator winding, the looseness of the stator core, the damage and aging of the insulation layer and other reasons, and the temperature of the cooling liquid flowing to the main liquid outlet pipe 5 through the cooling pipe 3 will also rise. After the thermal expansion fluid in the temperature sensing ring 9 is heated and expanded, the volume increases, so that the sliding rod 10 slides out in the direction of the contact switch 20 and opens the contact switch 20. The contact switch 20 controls the operation of the ball valve through the electrical connection with the ball valve, so that the cooling liquid in the refrigeration evaporator 15 flows to the auxiliary connecting pipe 18 through the auxiliary liquid outlet pipe 16, and stops supplying cooling liquid to the main connecting pipe 17, thereby making the cooling liquid in each cooling pipe 3 no longer stagnant, improving the cooling efficiency of the cooling liquid on the high-voltage motor body 2, preventing the continuous high temperature from causing the high-voltage motor body 2 to trigger the protection mechanism and suddenly stop, affecting the production efficiency, and timely maintaining and repairing the high-voltage motor body 2 after the current production group is completed, especially paying attention to checking the area covered by the contact switch 20 corresponding to the cooling pipe 3 to find the fault reason faster.

[0032] The thermal expansion fluid is a kind of functional liquid medium with significant volume expansion characteristics, which can convert physical signals (such as temperature rise and pressure increase) into mechanical displacement or force by generating predictable volume changes when the physical conditions such as temperature and pressure change. In the above-mentioned faults, the temperature difference of the stator winding turn-to-turn short circuit is 20-80℃, the temperature difference of the stator core loosening is 15-40℃, the temperature difference of the insulation layer damage and aging is 10-30℃, and the local temperature rise of 20℃ without timely cooling may continue to rise and trigger the overheat protection shutdown, or may form a hidden fault, which may lead to the shutdown of the high-voltage motor body 2 after running for a period of time due to the failure to repair in time. In combination with the basic temperature range that the high-voltage motor body 2 needs to maintain under the cooling action of the cooling pipe 3 during operation, such as 60℃ for A level, 75℃ for E level, 80℃ for B level, 100℃ for F level, and 125℃ for H level, taking B level 80℃ as an example, in order to cope with the temperature rise, the fluid inside the temperature sensing ring 9 should be adapted to 80-100℃, such as silicon oil (thermal expansion coefficient about 9.6×10 -4 / ℃), mineral oil base (thermal expansion coefficient about 7.0×10 -4 / ℃) and other types of fluids that are resistant to high temperature and not easy to volatilize. The distance moved by the sliding rod 10 under the expansion liquid is the product of the temperature difference and the thermal expansion coefficient.

[0033] Working principle:

[0034] When the high-voltage motor body 2 is running, the coolant in the evaporator 15 is pumped to the main inlet pipe 4 via the liquid pump through the auxiliary outlet pipe 16 and the main connecting pipe 17. At this time, under the action of the ball valve, the coolant cannot flow to the auxiliary connecting pipe 18 through the auxiliary outlet pipe 16. The output end of the servo motor 12 drives the gear 13 to rotate. The gear 13 then drives the gear ring 14 and the adjusting ring 7 to rotate through meshing transmission, thereby causing the main through hole 8 on the adjusting ring 7 to coincide with or be offset from the main inlet pipe 4. When the adjusting ring 7 rotates... Coolant can only flow into cooling pipe 3 when the main inlet pipe 4 coincides with the main through hole 8 or the auxiliary through hole 801. If the main inlet pipe 4 is blocked by the part of the adjusting ring 7 where the main through hole 8 or the auxiliary through hole 801 is not opened, the coolant inside the corresponding cooling pipe 3 will not flow, but will stagnate inside the cooling pipe 3. The coolant will only continue to flow when the main inlet pipe 4 coincides with the main through hole 8 or the auxiliary through hole 801 again. The stagnation of the coolant inside the cooling pipe 3 allows it to fully absorb the high-voltage motor body. The heat generated during operation effectively reduces resource waste and energy consumption when the coolant flows too fast, while ensuring the cooling effect. It also avoids excessive power load caused by the excessive flow of coolant. During the switching between the main through-hole 8 and the auxiliary through-hole 801, the coolant can enter the cooling pipe 3 in an intermittent turbulent state, thereby flushing away the air bubbles generated on the inner wall of the cooling pipe 3 due to the heat of the coolant. The removal of air bubbles reduces the thermal resistance of the air film, improves the heat exchange efficiency between the cooling water and the pipe wall, and can also flush the inner wall of the pipe, reducing the deposition of impurities such as scale and microbial film, maintaining the cooling efficiency for a long time, and extending the service life of the cooling pipe 3. When the coolant flows inside the cooling pipe 3, it carries away the heat generated by the high-voltage motor body 2 during operation. The heated coolant then flows into the refrigeration evaporator 15 through the main liquid outlet pipe 5 and the auxiliary liquid inlet pipe 21, where it is cooled by the refrigeration evaporator 15 to continue circulating and cooling the high-voltage motor body 2.

[0035] When the high-voltage motor body 2 is running, the stator may experience localized temperature rise due to factors such as short circuits between stator winding turns, loose stator core, and damage or aging of the insulation layer. The temperature of the affected area will be higher than the normal area, and the temperature of the coolant flowing through the cooling pipe 3 to the main outlet pipe 5 will also increase. The thermally expanding fluid inside the temperature sensing ring 9 will expand due to heat, causing the slide rod 10 to slide out towards the contact switch 20 and open the contact switch 20. The contact switch 20 controls the operation of the ball valve through its electrical connection with the ball valve, allowing the coolant in the evaporator 15 to flow freely. The coolant flows through the auxiliary outlet pipe 16 to the auxiliary connecting pipe 18, and stops supplying coolant to the main connecting pipe 17. This prevents the coolant inside each cooling pipe 3 from stagnating, improving the cooling efficiency of the high-voltage motor body 2. This prevents the high-voltage motor body 2 from suddenly shutting down due to the protection mechanism triggered by the local temperature being too high, which would affect production efficiency. After the current production cycle is completed, the high-voltage motor body 2 should be inspected and maintained in a timely manner, paying particular attention to checking the area covered by the corresponding cooling pipe 3 when the contact switch 20 is opened, so as to find the cause of the fault more quickly.

[0036] When the high-voltage motor body 2 experiences a localized temperature rise due to a fault, the flow direction of the coolant between the main connecting pipe 17 and the auxiliary connecting pipe 18 is switched to change the flow state of the coolant in each cooling pipe 3. This prevents the coolant in the cooling pipe 3 from stagnating, allowing for rapid cooling of the locally heated area. This reduces resource waste and enables emergency handling of sudden situations, protecting the high-voltage motor body 2, extending its service life, and preventing the high-voltage motor body 2 from shutting down due to continuous localized temperature rise, thus affecting production efficiency.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cooling water tank circulating device for a high-voltage motor, comprising a shell (1), the inside of the shell (1) is fixedly installed with a high-voltage motor body (2), characterized in that, Also include fixedly installed in the high-voltage motor body (2) inside a plurality of cooling pipes (3), one end of the cooling pipe (3) fixedly connected with the main inlet pipe (4), the cooling pipe (3) away from the main inlet pipe (4) one end fixedly connected with the main outlet pipe (5), the top of the shell (1) fixedly installed with refrigeration evaporator (15), the refrigeration evaporator (15) close to the main inlet pipe (4) one side fixedly connected with the auxiliary outlet pipe (16), the auxiliary outlet pipe (16) away from the refrigeration evaporator (15) one end fixedly connected with the main connecting pipe (17), the high-voltage motor body (2) close to the main inlet pipe (4) one end surface fixedly installed with the fixed ring (6), the main connecting pipe (17) away from the auxiliary outlet pipe (16) one end and fixed ring (6) fixedly connected, the bottom of the auxiliary outlet pipe (16) fixedly connected with the auxiliary connecting pipe (18), the auxiliary connecting pipe (18) away from the auxiliary outlet pipe (16) one end fixedly connected with a plurality of shunt pipe (19), the shunt pipe (19) away from the auxiliary connecting pipe (18) one end and the main inlet pipe (4) fixedly connected, the intersection of the auxiliary outlet pipe (16) and the auxiliary connecting pipe (18) fixedly installed with the ball valve, the outer side of the main outlet pipe (5) fixedly installed with the temperature sensing ring (9), the top of the temperature sensing ring (9) slidingly installed with the slide bar (10), the slide bar (10) and the ball valve drive connection, for changing the flow direction of the cooling liquid, when the high-voltage motor body (2) local heating, through the slide bar (10) and the ball valve drive connection makes the cooling liquid directly flows to the main inlet pipe (4) through the auxiliary connecting pipe (18) and the shunt pipe (19), to cool the high-voltage motor body (2) quickly.

2. A cooling water tank circulating device for a high voltage electric machine according to claim 1, characterized by, The inside of the fixed ring (6) is rotatably installed with the adjusting ring (7), a plurality of main through holes (8) and auxiliary through holes (801) are formed in the adjusting ring (7), for changing the flow state of the cooling liquid.

3. A cooling water tank circulating device for a high voltage electric machine according to claim 2, characterized in that, The inside of the temperature sensing ring (9) is filled with thermal expansion fluid, the thermal expansion fluid expands when heated, causing the slide bar (10) to slide, a contact switch (20) is fixedly installed on the inner side wall of the shell (1) and is adapted to the slide bar (10), and the contact switch (20) is electrically connected with the ball valve.

4. A cooling water tank circulating device for a high voltage electric machine according to claim 3, characterized in that, The inner diameters of the main through holes (8) and the auxiliary through holes (801) are different, and a plurality of main through holes (8) and auxiliary through holes (801) are arranged in a ring array, when the main through holes (8) and the auxiliary through holes (801) switch through the main inlet pipe (4), the cooling liquid can indirectly enter the cooling pipe (3) in a turbulent state.

5. A cooling water tank circulating device for a high voltage electric machine according to claim 4, characterized in that, A servo motor (12) is fixedly installed on the inner side wall of the shell (1), a gear (13) is fixedly installed on the output end of the servo motor (12), a gear ring (14) is fixedly installed on the end of the adjusting ring (7) away from the main inlet pipe (4) and is in meshing transmission with the gear (13), the output end of the servo motor (12) drives the gear (13), the gear ring (14) and the adjusting ring (7) to rotate.

6. A cooling water tank circulating device for a high voltage electric machine according to claim 5, wherein A plurality of cooling pipes (3) are arranged in a ring array, the cooling pipes (3) are arranged in a wave shape, the axis of the cooling pipes (3) coincides with the axis of the high-voltage motor body (2), and the high-voltage motor body (2) is cooled by zoning through the arrangement of the cooling pipes (3).

7. A cooling water tank circulating device for a high voltage electric machine according to claim 6, characterized in that, The high-voltage motor body (2) is internally provided with a cooling groove (201) for providing mounting space for the cooling pipes (3).

8. A cooling water tank circulating device for a high voltage electric machine according to claim 7, characterized by The temperature sensing ring (9) and the main liquid outlet pipe (5) are filled with heat-conducting silica gel to prevent gaps between the two from affecting the temperature detection effect.

9. A cooling water tank circulating device for high voltage electric machines according to claim 1, characterized in that, The fixing ring (6) is internally provided with a mounting groove (11) for providing mounting space for the adjusting ring (7) and the gear ring (14).

10. A cooling water tank circulating device for a high voltage electric machine according to claim 1, characterized by, The main liquid outlet pipe (5) is fixedly connected with a secondary liquid inlet pipe (21) away from the cooling pipes (3), the secondary liquid inlet pipe (21) is fixedly connected with the refrigeration evaporator (15) away from the main liquid outlet pipe (5), and the cooling liquid in the cooling pipes (3) after temperature rise flows into the refrigeration evaporator (15) through the secondary liquid inlet pipe (21).

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