CN217406344U

CN217406344U - Circulating water-cooled permanent magnet synchronous motor

Info

Publication number: CN217406344U
Application number: CN202221170740.6U
Authority: CN
Inventors: 范文超; 葛振浩; 窦文灿
Original assignee: Qufu Normal University
Current assignee: Qufu Normal University
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-09-09
Anticipated expiration: 2032-05-16

Abstract

A circulating water cooling type permanent magnet synchronous motor comprises a protection box and a motor main body arranged inside the protection box, wherein the motor main body comprises a shell, a plurality of water-cooled tubes are arranged on the outer ring of the shell along the length direction of the shell, a water inlet ring pipe and a water outlet ring pipe are respectively arranged at two ends of the shell, two ends of the plurality of water-cooled tubes are respectively communicated with the water inlet ring pipe and the water outlet ring pipe, a water tank and a pump are arranged above the protection box, the water inlet ring pipe is communicated with the bottom of the water tank, the water outlet ring pipe is communicated with the water inlet of the pump, the water outlet of the pump is communicated with the water tank, the pump is arranged above the protection box and close to one end of an output shaft of the motor main body, a driving shaft of the pump is in transmission connection with the output shaft, so that water flow forms a circulating refrigeration process of 'water tank-water inlet ring pipe-a plurality of water-cooled tubes-water outlet ring pipe-pump-water tank' for the motor main body, and heat generated by the shell can be uniformly and effectively transferred to circulating water in the plurality of water-cooled tubes, the use is more convenient, and the circulating refrigeration effect is more effective.

Description

Circulating water-cooled permanent magnet synchronous motor

Technical Field

The utility model relates to the technical field of motors, specifically be a circulating water-cooled PMSM.

Background

In the technical field of synchronous motors, the motor generates serious heating phenomena usually due to problems of working environment, load, working time and the like, and if the heating phenomena are not processed in time, the service life of the motor is seriously influenced, and even larger potential safety hazards can be generated.

At present, the motor usually adopts two modes of air cooling or water cooling to cool, and also a mode of combining water cooling and air cooling, for example, chinese patent CN202121196414.8 discloses a motor with heat protection function, which adopts a mode of combining water cooling and air cooling, but the motor locates the heat dissipation fan above the motor, and the hot air generated by the motor can not be discharged, so the wind blown by the heat dissipation fan is also hot wind, and can not reach effective heat dissipation effect, and the motor adopts a mode of spirally surrounding the motor with a heat dissipation pipe to cool by water cooling, so the heat transfer effect of the contact heat transfer between the water pipe and the motor is too poor, and simultaneously, due to the limitation of contact area, the cooling effect is also poor, and when in use, the water flow on the motor near the water inlet end of the spiral water pipe is preferentially heated by the heat generated by the motor, so the motor is near the water outlet end of the spiral water pipe, effective water cooling can not be achieved, so that the motor still has the local heating phenomenon, and the cooling effect is extremely limited.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a circulating water-cooled permanent magnet synchronous motor.

The utility model discloses technical scheme as follows:

the utility model provides a circulation water-cooled PMSM, includes the guard box, be equipped with the motor main part in the guard box, be connected with the circulation water cooling system in the motor main part for the cooling protection work of motor main part.

The motor main body comprises a shell, a plurality of water-cooled tubes are arranged on the outer ring of the shell along the length direction of the shell, a water inlet circular tube and a water outlet circular tube are respectively sleeved at two ends of the shell, two ends of the plurality of water-cooled tubes are respectively communicated with the water inlet circular tube and the water outlet circular tube, a water tank and a pump are arranged above the protection box, the water inlet circular tube is communicated with the bottom of the water tank, the water outlet circular tube is communicated with a water inlet of the pump, and a water outlet of the pump is communicated with the water tank.

Preferably, the pump is located at one end, close to the output shaft of the motor main body, of the upper portion of the protection box, and the drive shaft of the pump is in transmission connection with the output shaft, so that the motor main body drives the pump to work along with the pump when working, a power device does not need to be additionally arranged to provide power for the pump, and the pump is more convenient to use.

As above-mentioned a circulating water-cooled PMSM, the pipeline cross sectional shape of water-cooling pipe includes the arch, and the arch summit is located the outside of casing, and the both ends of arch bottom contact with the casing outer lane respectively, make the circulating water can directly contact with the casing on the one hand, increased heat transfer efficiency, the arched design has increased the area of contact of casing with the circulating water moreover, has increased the cooling protection effect of circulating water to the casing.

Furthermore, a plurality of water-cooling pipes are arranged around the shell gap, so that after water in the water-cooling pipes is heated under the action of the motor shell, normal heat exchange can be carried out between the water-cooling pipes and the outside.

Preferably, the delivery port union coupling of pump machine has the tee bend switching-over valve, one of them water outlet end of tee bend switching-over valve and water tank intercommunication, another water outlet end is connected with the drain pipe and makes under normal conditions, and the circulating water of crossing the pump machine can normally return to the water tank in, when the circulating water is overheated, can discharge the hot water through the tee bend switching-over valve to can enough continuously carry out the water-cooling protection work of motor through adding new cold water into the water tank, use and get up can convenient and fast more.

Preferably, the lower end of the shell is connected with the bottom of the protection box through a mounting frame, and the lower ends of the water inlet circular pipe and the water outlet circular pipe are respectively connected to two sides of the mounting frame through connecting devices, so that the water inlet circular pipe and the water outlet circular pipe can be more stably and reliably mounted.

Preferably, the output shaft one end is kept away from to the casing is equipped with the heat dissipation fan, the relative position of guard box and heat dissipation fan is equipped with the radiator-grid, makes the heat that the motor main part produced can transmit to the external world smoothly through heat dissipation fan and radiator-grid, prevents that the heat gathering from leading to the interior high temperature of guard box, influences going on of circulating water cooling work.

The beneficial effects of the utility model reside in that: the utility model relates to a circulating water-cooled PMSM, through the mode at the casing outer lane and along casing length direction equipartition water-cooling tube, the heat that makes the casing produce can evenly transmit the circulating water in to the water-cooling tube, and provide power for the hydrologic cycle through the pump machine, and the water-cooling tube clearance is arranged and is arched design, circulating water and external, motor casing's heat exchange efficiency, motor body's radiating effect has been increased, and can also be external through the drain pipe discharge when the circulating water temperature is too high, the convenient circulating water that updates, use convenience more.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

FIG. 1 is a schematic structural diagram of a synchronous motor in an embodiment;

FIG. 2 is a sectional view showing the fitting state of the water cooling tube and the housing in the embodiment;

the components represented by the reference numerals in the figures are:

1. a motor main body; 11. a housing; 12. a heat dissipation fan; 13. an output shaft; 14. a water-cooled tube; 15. a mounting frame; 151. mounting a plate; 152. a fixing plate; 2. a protection box; 21. a heat-dissipating web; 3. a circulating water cooling system; 31. a water tank; 32. a water outlet circular pipe; 33. a water inlet ring pipe; 34. a pump machine; 35. a three-way reversing valve; 36. and a water discharge pipe.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

Examples

The embodiment provides a circulating water-cooled permanent magnet synchronous motor, which is shown in fig. 1 and fig. 2 and comprises a protection box 2, wherein a motor body 1 is arranged in the protection box 2, and a circulating water cooling system 3 is connected to the motor body 1 and used for cooling protection work of the motor body 1.

In this embodiment, guard box 2 is box-packed structure, motor body 1 includes casing 11, casing 11 passes through mounting bracket 15 and is connected bottom guard box 2, specifically, casing 11 includes horizontal columnar structure, mounting bracket 15 includes two mounting panels 151 and a fixed plate 152, two mounting panel 151 is vertical respectively locates casing 11 lower part both ends, fixed plate 152 level is arranged, and the up end is connected with the lower extreme of two mounting panels 151, motor body 1 passes through fixed plate 152 and is connected bottom guard box 2.

Further, 11 one ends of the casing of motor main body 1 are equipped with output shaft 13, output shaft 13 stretches out outside protection box 2, and the casing 11 other end still is equipped with heat dissipation fan 12, it is equipped with radiator-grid 21 to correspond the position with heat dissipation fan 12 on the 2 lateral walls of protection box, makes the heat of casing 11 transmit to the external world smoothly through heat dissipation fan 12 and radiator-grid 21, prevents that the heat gathering from resulting in the interior high temperature of protection box 2, influences going on of circulation water cooling work.

In this embodiment, the outer ring of the housing 11 is provided with a plurality of water-cooling pipes 14 along the length direction of the housing 11, and the circulating water-cooling system 3 includes a water inlet circular pipe 33, a water outlet circular pipe 32, a water tank 31 and a pump 34.

Specifically, the water inlet ring pipe 33 is sleeved at one end of the casing 11 close to the heat dissipation fan 12, the water outlet ring pipe 32 is sleeved at one end of the casing 11 close to the output shaft 13, two ends of the water cooling pipes 14 are respectively communicated with the water inlet ring pipe 33 and the water outlet ring pipe 32, the water tank 31 and the pump 34 are arranged above the protection box 2, the water inlet ring pipe 33 is communicated with the bottom of the water tank 31, the water outlet ring pipe 32 is communicated with the water inlet of the pump 34, and the water outlet of the pump 34 is communicated with the water tank 31, so that water flow forms a circulation process of 'the water tank 31-the water inlet ring pipe 33-the water cooling pipes 14-the water outlet ring pipe 32-the pump 34-the water tank 31', heat in the operation process of the motor main body 1 can be uniformly transferred to the circulation water in the water cooling pipes 14, an effective cooling effect is achieved, and water cooling protection is more effective.

Furthermore, the lower end of the casing 11 is connected with the bottom of the protection box 2 through a mounting frame 15, and the lower ends of the water inlet circular pipe 33 and the water outlet circular pipe 32 are respectively connected to two sides of the mounting frame 15 through connecting devices, so that the water inlet circular pipe 33 and the water outlet circular pipe 32 can be more stably and reliably mounted.

Preferably, referring to fig. 2, the cross-sectional shape of the pipeline of the water-cooling pipes 14 includes an arch, the vertex of the arch is located outside the housing 11, and two ends of the bottom of the arch are respectively contacted with the outer ring of the housing 11, so that on one hand, the circulating water can be directly contacted with the housing 11, thereby increasing the heat transfer efficiency, and the contact area between the housing 11 and the circulating water is increased by the design of the arch, thereby increasing the cooling protection effect of the circulating water on the housing 11, it should be noted that the water-cooling pipes 14 are uniformly distributed around the gap of the housing 11, so that after the water in the water-cooling pipes 14 is heated under the action of the motor housing 11, the water can also perform normal heat exchange with the outside through the outer walls of the water-cooling pipes 14, thereby improving the heat dissipation efficiency.

Further, the pump 34 is located at one end, close to the output shaft 13, above the protection box 2, the pump 34 comprises a driving shaft, an opening is formed in the protection box 2 between the driving shaft and the output shaft 13, the driving shaft of the pump 34 is in transmission connection with the output shaft 13 through a transmission belt, so that the motor body 1 drives the pump 34 to work along with the driving shaft when working, a power device is not required to be additionally arranged to provide power for the pump 34, and the use is more convenient.

As further preferred, the water outlet pipe of the pump 34 is connected with a three-way reversing valve 35, the three-way reversing valve 35 includes an electromagnetic valve, one of the water outlet ends of the three-way reversing valve 35 is communicated with the water tank 31, and the other water outlet end is connected with a water outlet pipe 36, so that the circulating water passing through the pump 34 can normally return to the water tank 31 under normal conditions, when the circulating water is overheated, the hot water can be discharged through the three-way reversing valve 35, and the water cooling protection work of the motor can be continuously performed by adding new cold water into the water tank 31, and the use can be more convenient and rapid.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A circulating water-cooled permanent magnet synchronous motor is characterized by comprising a protection box (2), wherein a motor main body (1) is arranged in the protection box (2);

the motor main body (1) comprises a shell (11), a plurality of water-cooled tubes (14) are arranged on the outer ring of the shell (11) along the length direction of the shell (11), a water inlet ring pipe (33) and a water outlet ring pipe (32) are respectively arranged at two ends of the shell (11), and two ends of the plurality of water-cooled tubes (14) are respectively communicated with the water inlet ring pipe (33) and the water outlet ring pipe (32);

a water tank (31) and a pump (34) are arranged above the protection box (2), the water inlet ring pipe (33) is communicated with the bottom of the water tank (31), the water outlet ring pipe (32) is communicated with a water inlet of the pump (34), and a water outlet of the pump (34) is communicated with the water tank (31);

the pump (34) is positioned above the protection box (2) and close to one end of the output shaft (13) of the motor main body (1), and a driving shaft of the pump (34) is in transmission connection with the output shaft (13).

2. A circulating water-cooled permanent magnet synchronous machine according to claim 1, characterized in that the pipe cross-sectional shape of the water-cooled tubes (14) comprises an arch.

3. A circulating water-cooled permanent magnet synchronous machine according to claim 2, characterized in that several of the water-cooled tubes (14) are arranged in a spaced manner around the housing (11).

4. A circulating water-cooled permanent magnet synchronous motor as claimed in claim 1, wherein a three-way reversing valve (35) is connected to the water outlet pipe of the pump (34), one water outlet end of the three-way reversing valve (35) is communicated with the water tank (31), and the other water outlet end is connected with a water outlet pipe (36).

5. A circulating water cooled pm synchronous machine as claimed in claim 1, wherein the lower end of said housing (11) is connected to the bottom of the protection box (2) by means of a mounting bracket (15), and the lower ends of said water inlet loop (33) and water outlet loop (32) are connected to the two sides of the mounting bracket (15) by means of connecting means, respectively.

6. A circulating water-cooled pm synchronous machine as recited in claim 1, wherein said casing (11) is provided with a heat dissipating fan (12) at an end thereof remote from said output shaft (13), and a heat dissipating net (21) is provided at a position opposite to said heat dissipating fan (12) of said protection box (2).