Multi-pole synchronous motor with water-cooling base

Abstract

The invention belongs to the technical field of synchronous motors, and particularly relates to a multi-pole synchronous motor with a water-cooling machine base, which comprises a water-cooling machine base, the water-cooling machine base comprises a water jacket core, the water jacket core is provided with a water channel, and the water channel is provided with an outer cover plate; the water channel is internally provided with mutually connected movable ring plates, an expansion bag is arranged between the movable ring plates and the side wall of the water channel, the expansion bag is provided with a fixed ring, the fixed ring is provided with an elastic sleeve, and the elastic sleeve is inserted into the water outlet pipe; micropores are formed in the surfaces of the expansion bag and the connecting bag; the structure is simple, cooling water in the water channel is used for cooling the synchronous motor, the bulged expansion bag is used for pushing the movable annular plate to move in the water channel to clean accumulated scale impurities, the water quality requirement and cooling energy consumption of the cooling water are reduced, the cooling effect is guaranteed, and safe and stable operation of the synchronous motor is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of synchronous motors, and specifically relates to a multi-pole synchronous motor with a water-cooled frame. Background Art

[0002] A motor refers to an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. A motor includes a stator, a stator winding, a frame, a rotor, end covers, bearings, and bearing end covers. Its main function is to generate a driving torque and serve as a power source for electrical appliances or various machines.

[0003] The function of the frame is to fix the stator core and the front and rear end covers to support the rotor, and to play roles such as protection and heat dissipation. Ventilation holes are opened in the end covers at both ends of the existing motor frame, so that the air inside and outside the motor can directly convect to facilitate heat dissipation.

[0004] However, when the motor works for a long time, especially a high-power motor, in summer, heat dissipation through air convection cannot effectively solve the heat dissipation problem. The motor works for a long time, resulting in the motor being prone to failures due to excessive temperature. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, the present invention proposes a multi-pole synchronous motor with a water-cooled frame, which uses the cooling water in the water channel to cool down the synchronous motor, and uses the bulging expansion bag to push the movable ring plate to move in the water channel to clean up the accumulated scale impurities, reduce the water quality requirements and heat dissipation energy consumption of the cooling water, ensure the heat dissipation and cooling effect, and ensure the safe and stable operation of the synchronous motor.

[0006] The technical solution adopted by the present invention to solve its technical problems is: The present invention relates to a multi-pole synchronous motor with a water-cooled frame, which includes a water-cooled frame. The water-cooled frame includes a water jacket core. End plates are installed at both ends of the water jacket core. A junction box is installed on the water jacket core. Uniformly distributed water channels are opened on the outer surface of the water jacket core. An outer cover plate is installed on the water channel. An inlet pipe and an outlet pipe are installed on the outer cover plate; An over-flow port is opened on the water jacket core. The over-flow port connects adjacent water channels. A blocking block is installed in the water channel. The blocking block and the over-flow port cooperate with each other to divide the water channel into two parts connected end to end. The liquid flow directions in the two parts of the water channel are opposite. The liquid in each part of the water channel flows in an S shape; An active ring plate is installed in the water tank channel. The active ring plates are interconnected by connecting rods. The end of the active ring plate is close to the water outlet pipe. An expansion bag is installed between the active ring plate and the side wall of the water tank channel. A connecting bag is installed on the expansion bag. A fixing rod is installed on the water outlet pipe. A fixing ring is installed on the fixing rod. An elastic sleeve is installed on the fixing ring. One end of the elastic sleeve away from the fixing ring is inserted into the water outlet pipe; Micropores are provided on the surfaces of the expansion bag and the connecting bag. When the expansion bag bulges, it pushes the active ring plate to move in the width direction within the water tank channel.

[0007] Preferably, the outer cover plate includes an upper plate and a lower plate, and the upper plate and the lower plate respectively correspond to the two parts separated from the water tank channel; Protrusions are provided on the surface of the outer cover plate. Grooves are provided on the active ring plate. The protrusions are inserted into the grooves. The length directions of the protrusions and the grooves are the same as the width direction of the water tank channel.

[0008] Preferably, a reinforcing plate is installed inside the active ring plate. There are multiple groups of reinforcing plates. The cross-sectional shape of the reinforcing plate is in the shape of an H.

[0009] Preferably, an elastic rod is installed inside the side wall of the elastic sleeve. The elastic rod drives the elastic sleeve to close to the inner wall of the water outlet pipe; A magnetic block is installed at one end of the elastic sleeve away from the fixing ring. There is a magnetic attraction force between the magnetic block and the water outlet pipe. An attraction groove is provided on the inner wall of the water outlet pipe. The magnetic block is clamped into the attraction groove under the action of the magnetic attraction force; The fixing rod is located outside the elastic sleeve.

[0010] Preferably, the height of the protrusion is greater than the depth of the groove. The width of the active ring plate is greater than the depth of the water tank channel. The active ring plate is installed between the outer cover plate and the water tank channel by interference fit.

[0011] Preferably, a deformation layer is installed on the surface of the active ring plate. A void cavity is provided inside the deformation layer. An active liquid is filled in the void cavity. The volume of the active liquid expands as the temperature rises.

[0012] Preferably, the width of the deformation layer is smaller than the width of the active ring plate.

[0013] Preferably, the positions of the water tank channels on the surface of the water jacket core include multiple types: the water tank channel is provided on the outer surface of the water jacket core, the water tank channel is provided on the inner surface of the water jacket core, and water tank channels are provided on both the outer surface and the inner surface of the water jacket core.

[0014] The beneficial effects of the present invention are as follows: 1. The multi-pole synchronous motor with a water-cooled machine base according to the present invention is provided with a water tank channel, a movable ring plate, a water outlet pipe, an elastic sleeve, and an expansion bag. The cooling water in the water tank channel is used to take away the heat generated during the operation of the synchronous motor, so that the temperature of the synchronous motor is relatively low, ensuring the safe and stable operation of the synchronous motor. At the same time, when the cooling water flows in the reverse direction, the cooling water enters the expansion bag from the water outlet pipe, and the bulging expansion bag is used to push the movable ring plate to move in the water tank channel, cleaning the inner wall of the water tank channel, and preventing scale and impurities from accumulating in the water tank channel, so as to avoid the synchronous motor from overheating and malfunctioning.

[0015] 2. The multi-pole synchronous motor with a water-cooled machine base according to the present invention is provided with a reinforcing plate, as well as protrusions on the movable ring plate and grooves on the outer cover plate, so that the movable ring plate can move stably in the water tank channel, preventing the movable ring plate from tilting and shifting, which may affect the heat dissipation and cooling effect. At the same time, it can prevent the strength of the movable ring plate from being insufficient and deforming during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 is a perspective view of the water-cooled machine base of the present invention; Figure 2 is a perspective view of the water jacket core in the water-cooled machine base of the present invention, where the movable ring plate stays at the initial position; Figure 3 is a perspective view of the water jacket core in the water-cooled machine base of the present invention, where the movable ring plate is in the process of moving; Figure 4 is a schematic structural view of the outer cover plate installed on the water jacket core of the water-cooled machine base of the present invention; Figure 5 is Figure 1 the top view F, left view L, and right view R of the upper half part after the water jacket core with the outer cover plate installed in is horizontally sectioned; Figure 6 is a perspective view of the water outlet pipe, connecting bag, and expansion bag in the water-cooled machine base of the present invention; Figure 7 is a schematic structural view of the water outlet pipe, connecting bag, and expansion bag in the water-cooled machine base of the present invention; Figure 8 is a schematic view of the position of the movable ring plate and the connecting rod in the water-cooled machine base of the present invention; Figure 9 is a schematic structural view of the movable ring plate in the water-cooled machine base of the present invention; Figure 10 is Figure 2 the partial enlarged view at A in ; Figure 11 is Figure 3 the partial enlarged view at B in ; Figure 12 is Figure 7 The partial enlarged view at position C in the figure; In the figure: water jacket core 1, end plate 11, junction box 12, water inlet pipe 13, water outlet pipe 14, fixing ring 15, fixing rod 151, elastic sleeve 152, elastic rod 153, magnetic block 154, outer cover plate 2, upper plate 21, lower plate 22, water tank channel 3, flow-through port 31, blocking block 32, movable ring plate 4, connecting rod 41, reinforcing plate 42, deformation layer 43, expansion bag 5, connecting bag 51. Specific embodiments

[0018] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0019] As Figures 1 to 12 shown, a multi-pole synchronous motor with a water-cooled machine base according to the present invention includes a water-cooled machine base, the water-cooled machine base includes a water jacket core 1, end plates 11 are installed at both ends of the water jacket core 1, a junction box 12 is installed on the water jacket core 1, uniformly distributed water tank channels 3 are provided on the outer surface of the water jacket core 1, an outer cover plate 2 is installed on the water tank channels 3, and a water inlet pipe 13 and a water outlet pipe 14 are installed on the outer cover plate 2; A flow-through port 31 is provided on the water jacket core 1, the flow-through port 31 communicates adjacent water tank channels 3, a blocking block 32 is installed in the water tank channels 3, the blocking block 32 and the flow-through port 31 cooperate with each other to divide the water tank channels 3 into two parts connected end to end, the liquid flow directions in the two parts of the water tank channels 3 are opposite, and the liquid flows in an S shape in each part of the water tank channels 3; A movable ring plate 4 is installed in the water tank channels 3, the movable ring plates 4 are connected to each other through connecting rods 41, the ends of the movable ring plates 4 are close to the water outlet pipe 14, an expansion bag 5 is installed between the movable ring plate 4 and the side wall of the water tank channels 3, a connecting bag 51 is installed on the expansion bag 5, a fixing rod 151 is installed on the water outlet pipe 14, a fixing ring 15 is installed on the fixing rod 151, and an elastic sleeve 152 is installed on the fixing ring 15, and a section of the elastic sleeve 152 away from the fixing ring 15 is inserted into the water outlet pipe 14; Micropores are provided on the surfaces of the expansion bag 5 and the connecting bag 51, and when the expansion bag 5 bulges, it pushes the movable ring plate 4 to move in the width direction in the water tank channels 3; When the multi-pole synchronous motor is running, the heat generated by the motor operation is quickly dissipated through the water-cooled machine base, ensuring that the temperature of the motor will not be too high during operation and the motor runs safely and stably; When cooling down a synchronous motor, the external cooling water is sent into the water channel 3 through the inlet pipe 13 by a circulating pump. The cooling water flows in the water channel 3 to the outlet pipe 14 and is discharged from the outlet pipe 14, so that the cooling water takes away the heat generated during the operation of the motor, ensuring that the temperature of the motor is relatively low. At the same time, the direction in which the cooling water flows from the inlet pipe 13 to the outlet pipe 14 in the water channel 3 is defined as the positive direction of the cooling water flow. Due to environmental and practical conditions, the cooling water used for cooling is often directly used after simple purification of existing water sources, so that some impurities or scale will remain in the cooling water. After the synchronous motor operates for a long time, there is a situation where impurities or scale accumulate in the water channel 3, which in turn affects the cooling and temperature reduction effect of the synchronous motor. Therefore, a movable ring plate 4 is installed in the water channel 3 to clean and scrape the inner wall of the water channel 3 through the movement of the movable ring plate 4, avoiding or delaying the accumulation of impurities and scale in the water channel 3, ensuring good cooling and temperature reduction effects, and ensuring the normal and stable operation of the synchronous motor. At the same time, when cleaning the water channel 3, by controlling the external circulating pump, after a fixed time interval, the circulating pump drives the cooling water to flow in the reverse direction. At this time, the cooling water enters the water channel 3 from the outlet pipe 14. Since a connecting bag 51 and an expansion bag 5 are installed at the outlet pipe 14, the reversely flowing cooling water will fill into the expansion bag 5, causing the volume of the expansion bag 5 to gradually increase. The bulging expansion bag 5 pushes the movable ring plate 4, causing the movable ring plate 4 to move in the width direction in the water channel 3 to scrape and clean the inner wall of the water channel 3, avoiding or delaying the accumulation of scale and impurities. At the same time, since micropores are provided on the expansion bag 5 and the connecting bag 51, after the reversely flowing cooling water in the outlet pipe 14 fills into the expansion bag 5 and causes the expansion bag 5 to bulge, the cooling water in the expansion bag 5 will flow out from the micropores into the water channel 3 and flow reversely along the water channel 3 to the inlet pipe 13 and be discharged. Meanwhile, since an elastic sleeve 152 is installed at the water outlet pipe 14 and the elastic sleeve 152 is inserted into the water outlet pipe 14, when the cooling water flows forward, the cooling water flows from the water tank channel 3 into the water outlet pipe 14. At this time, the pressure in the water tank channel 3 is relatively greater than the pressure in the water outlet pipe 14, causing the elastic sleeve 152 to be deformed under pressure, creating a gap between the outer wall of the elastic sleeve 152 and the inner wall of the water outlet pipe 14, facilitating the entry of the cooling water from the water tank channel 3 into the water outlet pipe 14. At the same time, when the cooling water flows in the reverse direction, the pressure in the water outlet pipe 14 is greater than the pressure in the water tank channel 3. After the inner wall of the elastic sleeve 152 is pressured, the outer wall of the elastic sleeve 152 is closely attached to the inner wall of the water outlet pipe 14, thereby enabling the cooling water in the water outlet pipe 14 to be discharged from within the elastic sleeve 152 and further enter the connecting bag 51 and the expansion bag 5, achieving the function of pushing the movable ring plate 4 to move. At the same time, after the cooling water resumes forward flow, the movable ring plate 4 will return to its original position under the impact of the cooling water in the water tank channel 3 and the elastic force of the contraction of the expansion bag 5; Meanwhile, a blocking block 32 is installed in the water tank channel 3 on the water jacket core 1 and a flow-through opening 31 is opened, such that the water tank channel 3 on the water jacket core 1 is divided into upper and lower parts, and the upper and lower parts of the water tank channel 3 are connected end to end, enabling the cooling water to flow in an S shape in both parts of the water tank channel 3, improving the cooling effect on the synchronous motor and ensuring the normal and stable operation of the motor.

[0020] As an implementation manner of the present invention, the outer cover plate 2 includes an upper plate 21 and a lower plate 22, and the upper plate 21 and the lower plate 22 respectively correspond to the two parts separated from the water tank channel 3; A protrusion is provided on the surface of the outer cover plate 2, a groove is provided on the movable ring plate 4, and the protrusion is inserted into the groove. The length directions of the protrusion and the groove are the same as the width direction of the water tank channel 3; Since the perimeter of the water tank channel 3 is too large relative to the width, the movable ring plate 4 in the water tank channel 3 is in an overall slender state. Therefore, when the movable ring plate 4 moves along the width direction of the water tank channel 3, the movable ring plate 4 is prone to skew and deviation, affecting the cleaning effect of the movable ring plate 4 on the water tank channel 3. At the same time, when the movable ring plate 4 is severely inclined, there is also a situation where the skewed movable ring plate 4 blocks the water tank channel 3, resulting in the cooling water not flowing smoothly and affecting the normal operation of the synchronous motor; Therefore, a protrusion is provided on the surface of the outer cover plate 2 and a groove is provided on the surface of the movable ring plate 4, and the protrusion and the groove cooperate with each other, such that when the movable ring plate 4 moves along the width direction of the water tank channel 3, the movable ring plate 4 can be guided and limited by the protrusion, enabling the movable ring plate 4 to always be parallel to the side wall of the water tank channel 3, preventing the movable ring plate 4 from skewing and deviating during movement, and affecting the cleaning of the water tank channel 3 and the cooling effect on the synchronous motor.

[0021] As an embodiment of the present invention, a reinforcing plate 42 is installed in the movable ring plate 4. A plurality of groups of the reinforcing plates 42 are provided, and the cross-sectional shape of the reinforcing plate 42 is in an H shape; Since the movable ring plate 4 is in an overall slender state, and the movable ring plates 4 in each water tank channel 3 are connected to each other through a connecting rod 41, when the expansion bag 5 drives the movable ring plate 4 to move along the width direction of the water tank channel 3, for a single movable ring plate 4, one end of the movable ring plate 4 is stressed, which easily causes the movable ring plate 4 to deform and bend, affecting the cleaning effect on the inner wall of the water tank channel 3. Therefore, the reinforcing plate 42 is provided in the movable ring plate 4 to enhance the strength of the movable ring plate 4 by using the reinforcing plate 42, avoiding or minimizing the possibility of bending deformation when the movable ring plate 4 moves. At the same time, the cross-sectional shape of the reinforcing plate 42 is in an H shape, avoiding the twisting and deformation of the reinforcing plate 42 in the movable ring plate 4 and affecting the movement of the movable ring plate 4. At the same time, the function of the reinforcing plate 42 enables the movable ring plate 4 to have a relatively small thickness while having a high strength, avoiding bending deformation when the movable ring plate 4 moves, and avoiding jamming of the movable ring plate 4 in the water tank channel 3 after bending deformation, affecting the normal operation of the water-cooled machine base, and avoiding affecting the normal and stable operation of the synchronous motor.

[0022] As an embodiment of the present invention, an elastic rod 153 is installed in the side wall of the elastic sleeve 152, and the elastic rod 153 drives the elastic sleeve 152 to approach the inner wall of the water outlet pipe 14; A magnetic block 154 is installed at one end of the elastic sleeve 152 away from the fixed ring 15. There is a magnetic attraction force between the magnetic block 154 and the water outlet pipe 14. An attraction groove is formed on the inner wall of the water outlet pipe 14, and the magnetic block 154 is clamped into the attraction groove under the action of the magnetic attraction force; The fixed rod 151 is located outside the elastic sleeve 152; Since the elastic sleeve 152 will be inserted into the water outlet pipe 14, and when the cooling water flows in the reverse direction, the cooling water will wash into the elastic sleeve 152 from the water outlet pipe 14. During this process, the cooling water flowing out of the water outlet pipe 14 will have an impact on the end of the elastic sleeve 152 inserted into the water outlet pipe 14. By installing the elastic rod 153 in the side wall of the elastic sleeve 152, the outer wall of the elastic sleeve 152 is closely attached to the inner wall of the water outlet pipe 14 under the action of the elastic force of the elastic rod 153 and the pressure of the cooling water in the water outlet pipe 14, avoiding deformation of the end of the elastic sleeve 152 located in the water outlet pipe 14 by the impact of the water flow and generating a gap between the outer wall of the elastic sleeve 152 and the inner wall of the water outlet pipe 14, resulting in the discharge of the cooling water from the gap, making the cooling water entering the expansion bag 5 relatively small, and further affecting the pushing of the expansion bag 5 on the movable ring plate 4 and the cleaning effect of the movable ring plate 4 on the inner wall of the water tank channel 3; Meanwhile, due to the relatively large pressure and flow rate of the cooling water, the impact force of the cooling water on the end of the elastic sleeve 152 located inside the water outlet pipe 14 is relatively large. A magnetic block 154 is installed on the end of the elastic sleeve 152, and an attracting groove is formed on the inner wall of the water outlet pipe 14, so that the magnetic block 154 is snapped into the attracting groove, thereby improving the tightness effect between the elastic sleeve 152 and the water outlet pipe 14 when the cooling water flows reversely and drives the movable ring plate 4 to clean the water tank channel 3. Ensure that when the cooling water flows reversely, the cooling water can fully enter the expansion bag 5, and ensure that the expansion bag 5 is fully inflated, drives the movable ring plate 4 to move in the water tank channel 3, and cleans the inner wall of the water tank channel 3.

[0023] As an embodiment of the present invention, the height of the protrusion is greater than the depth of the groove, the width of the movable ring plate 4 is greater than the depth of the water tank channel 3, and the movable ring plate 4 is installed between the outer cover plate 2 and the water tank channel 3 by interference fit; Since the height of the protrusion is greater than the depth of the groove, after the outer cover plate 2 is installed on the water jacket core 1, the outer cover plate 2 will produce a squeezing effect on the groove through the protrusion, that is, the fit between the movable ring plate 4 between the outer cover plate 2 and the water tank channel 3 is an interference fit, so as to fully ensure the contact between the movable ring plate 4 and the inner wall of the water tank channel 3 and between the movable ring plate 4 and the outer cover plate 2, ensure the cleaning effect of the inner wall of the water tank channel 3 when the movable ring plate 4 moves, avoid the accumulation of water scale and impurities in the water tank channel 3, extend the maintenance cycle of the water-cooled machine base, improve the heat dissipation and cooling effect, and ensure the normal and stable operation of the synchronous motor.

[0024] As an embodiment of the present invention, a deformation layer 43 is installed on the surface of the movable ring plate 4, a void cavity is formed in the deformation layer 43, and a movable liquid is filled in the void cavity, and the volume of the movable liquid expands with the increase of temperature; When the synchronous motor runs for a long time at high power and generates a large amount of heat, the temperature of the deformation layer 43 on the movable ring plate 4 will also increase. At this time, the movable liquid made of a mixture of alcohol and water filled in the void cavity in the deformation layer 43 expands when heated, causing the deformation layer 43 to expand and bulge, so that the space occupied by the movable ring plate 4 in the water tank channel 3 increases, that is, the space for the cooling water to flow in the water tank channel 3 relatively decreases. At this time, when the pressure of the cooling water transported by the external circulation pump remains unchanged, the flow rate of the cooling water in the water tank channel 3 relatively increases, so that the cooling water flows through the water-cooled machine base relatively quickly, taking away the heat generated during the operation of the synchronous motor and improving the heat dissipation and cooling effect on the synchronous motor; Meanwhile, after the deformation layer 43 on the movable ring plate 4 bulges, the cross-sectional areas occupied by the movable ring plate 4 and the deformation layer 43 within the cross-section of the water channel 3 are relatively large, making the cross-sectional diameter of the water channel 3 for passing cooling water relatively small, facilitating sufficient heat exchange between the cooling water and the water channel 3. When the cross-sectional diameter of the cooling water passing through the water channel 3 is large, the cooling water near the middle position of the cross-section is blocked by the cooling water near the outer layer of the cross-section and cannot quickly and smoothly exchange heat with the water channel, thus promoting the heat exchange between the cooling water and the heat in the water channel 3, improving the heat dissipation and cooling effect of the synchronous motor, and ensuring the normal and stable operation of the synchronous motor.

[0025] As an embodiment of the present invention, the width of the deformation layer 43 is smaller than the width of the movable ring plate 4; Since the width of the deformation layer 43 is smaller than the width of the movable ring plate 4, when the deformation layer 43 expands and bulges, the deformation layer 43 will bulge outwards from the surface of the movable ring plate 4, and the surface of the bulging part is arc-shaped, thereby reducing the area where the deformation layer 43 is in contact with the inner wall of the water channel 3, avoiding the reduction or excessive reduction of the contact area between the cooling water and the inner wall of the water channel 3, ensuring the heat exchange between the cooling water and the water channel 3, and improving the heat dissipation and cooling effect of the synchronous motor; Meanwhile, since the width of the deformation layer 43 is smaller than the width of the movable ring plate 4, when the deformation layer 43 expands and deforms due to heat, the deformation layer 43 will not contact or block the edge of the movable ring plate 4, avoiding the deformation layer 43 from hindering the movement of the movable ring plate 4 and affecting the cleaning effect of the movable ring plate 4 on the inner wall of the water channel 3.

[0026] As an embodiment of the present invention, the positions of the water channels 3 on the surface of the water jacket core 1 include various types: the water channels 3 are arranged on the outer surface of the water jacket core 1, the water channels 3 are arranged on the inner surface of the water jacket core 1, and the water channels 3 are arranged on both the outer surface and the inner surface of the water jacket core 1; In actual application, according to the installation and operation environment of the synchronous motor and the average power during the operation of the synchronous motor, determine and judge the amount of heat dissipated during the operation of the synchronous motor: when the synchronous motor generates more heat and the heat is not easily dissipated, water channels 3 are arranged on both the inner surface and the outer surface of the water jacket core 1 to fully increase the area of the water channels 3 on the water-cooled machine base and the contact area between the cooling water and the water channels 3, improving the heat dissipation and cooling effect on the synchronous motor; when the synchronous motor generates less heat and the heat is easily dissipated, water channels 3 are arranged on the outer surface of the water jacket core 1 to ensure the heat dissipation effect and reduce the heat dissipation energy consumption; when the synchronous motor generates more heat and the heat is easily dissipated, water channels 3 are arranged on the inner surface of the water jacket core 1 to reduce the distance between the cooling water and the internal heat-generating components of the synchronous motor and the heat transfer distance, facilitating the heat exchange between the heat and the cooling water, thereby balancing the heat dissipation energy consumption and the heat dissipation effect.

[0027] The specific working process is as follows: When the multi-pole synchronous motor is running, the heat generated during the motor operation is quickly dissipated through the water-cooled frame; The cooling water from the outside is sent into the water tank channel 3 through the circulating pump from the water inlet pipe 13. The cooling water flows in the water tank channel 3 to the water outlet pipe 14 and is discharged from the water outlet pipe 14, so that the cooling water takes away the heat generated during the motor operation. At the same time, the direction in which the cooling water flows from the water inlet pipe 13 to the water outlet pipe 14 in the water tank channel 3 is defined as the positive direction of the cooling water flow; After the synchronous motor runs for a long time, impurities or scale may accumulate in the water tank channel 3. An activity ring plate 4 is installed in the water tank channel 3, and the inner wall of the water tank channel 3 is cleaned and scraped through the activity of the activity ring plate 4; By controlling the external circulating pump, after a fixed time interval, the circulating pump drives the cooling water to flow in the reverse direction. At this time, the cooling water enters the water tank channel 3 from the water outlet pipe 14. Since the connecting bag 51 and the expansion bag 5 are installed at the water outlet pipe 14, the cooling water flowing in the reverse direction will be filled into the expansion bag 5, so that the volume of the expansion bag 5 gradually increases. The bulging expansion bag 5 pushes the activity ring plate 4, so that the activity ring plate 4 moves along the width direction in the water tank channel 3, scraping and cleaning the inner wall of the water tank channel 3. At the same time, since the expansion bag 5 and the connecting bag 51 are provided with micropores, after the cooling water flowing in the reverse direction in the water outlet pipe 14 is filled into the expansion bag 5 and the expansion bag 5 bulges, the cooling water in the expansion bag 5 will flow out from the micropores into the water tank channel 3 and flow in the reverse direction along the water tank channel 3 to the water inlet pipe 13 and be discharged; Since the elastic sleeve 152 is installed at the water outlet pipe 14 and the elastic sleeve 152 is inserted into the water outlet pipe 14, when the cooling water flows in the positive direction, the cooling water flows from the water tank channel 3 into the water outlet pipe 14. At this time, the pressure in the water tank channel 3 is relatively higher than the pressure in the water outlet pipe 14, so that the elastic sleeve 152 is deformed under pressure, and a gap appears between the outer wall of the elastic sleeve 152 and the inner wall of the water outlet pipe 14, facilitating the cooling water to enter the water outlet pipe 14 from the water tank channel 3. At the same time, when the cooling water flows in the reverse direction, the pressure in the water outlet pipe 14 is greater than the pressure in the water tank channel 3. After the inner wall of the elastic sleeve 152 is pressured, the outer wall of the elastic sleeve 152 is closely attached to the inner wall of the water outlet pipe 14, so that the cooling water in the water outlet pipe 14 is discharged from the elastic sleeve 152 and further enters the connecting bag 51 and the expansion bag 5. At the same time, after the cooling water resumes flowing in the positive direction, the activity ring plate 4 will return to its original position under the impact of the cooling water in the water tank channel 3 and the elastic force of the contraction of the expansion bag 5; A protrusion is provided on the surface of the outer cover plate 2, and a groove is provided on the surface of the movable ring plate 4, so that the protrusion and the groove cooperate with each other. When the movable ring plate 4 moves along the width direction of the water channel 3, the movable ring plate 4 can be guided and limited by the protrusion, so that the movable ring plate 4 always remains parallel to the side wall of the water channel 3; Since the movable ring plate 4 is in an overall slender state, and the movable ring plates 4 in each water channel 3 are connected to each other through a connecting rod 41. When the expansion bag 5 drives the movable ring plate 4 to move along the width direction of the water channel 3, for a single movable ring plate 4, this movable ring plate 4 is stressed at one end, which easily causes the movable ring plate 4 to deform and bend. Therefore, a reinforcing plate 42 is provided in the movable ring plate 4 to enhance the strength of the movable ring plate 4 by using the reinforcing plate 42. At the same time, the cross-sectional shape of the reinforcing plate 42 is in an H shape. At the same time, due to the function of the reinforcing plate 42, the movable ring plate 4 has a relatively high strength while maintaining a relatively small thickness; Since the elastic sleeve 152 will be inserted into the water outlet pipe 14, and when the cooling water flows in the reverse direction, the cooling water flowing out of the water outlet pipe 14 will generate an impact on the end of the elastic sleeve 152 inserted into the water outlet pipe 14. By installing an elastic rod 153 inside the side wall of the elastic sleeve 152, the outer wall of the elastic sleeve 152 is closely attached to the inner wall of the water outlet pipe 14 under the action of the elastic force of the elastic rod 153 and the pressure of the cooling water in the water outlet pipe 14; At the same time, since the pressure and flow rate of the cooling water are relatively large, the impact force of the cooling water on the end of the elastic sleeve 152 located in the water outlet pipe 14 is relatively large. A magnetic block 154 is installed on the end of the elastic sleeve 152, and an attracting groove is opened on the inner wall of the water outlet pipe 14, so that the magnetic block 154 is stuck into the attracting groove to make the elastic sleeve 152 and the water outlet pipe 14 closely attached; Since the height of the protrusion is greater than the depth of the groove, after the outer cover plate 2 is installed on the water jacket core 1, the outer cover plate 2 will produce a squeezing effect on the groove through the protrusion, that is, the fit between the movable ring plate 4 and the water channel 3 is an interference fit, ensuring the contact between the movable ring plate 4 and the inner wall of the water channel 3 and between the movable ring plate 4 and the outer cover plate 2; When the synchronous motor runs for a long time at a high power and generates a large amount of heat, the temperature of the deformation layer 43 on the movable ring plate 4 will also rise. At this time, the movable liquid made of a mixture of alcohol and water filled in the void cavity in the deformation layer 43 expands when heated, causing the deformation layer 43 to expand and bulge, so that the space occupied by the movable ring plate 4 in the water channel 3 increases, that is, the space for the cooling water to flow in the water channel 3 relatively decreases. At this time, when the pressure of the cooling water transported by the external circulation pump remains unchanged, the flow rate of the cooling water in the water channel 3 relatively increases, so that the cooling water flows through the water-cooled machine base relatively quickly, taking away the heat generated when the synchronous motor runs and preventing the cooling water after the temperature rises from staying in the water channel for too long; Since the width of the deformation layer 43 is smaller than that of the movable ring plate 4, when the deformation layer 43 expands and bulges, the deformation layer 43 will bulge outwards from the surface of the movable ring plate 4, and the surface of the bulging part is arc-shaped, reducing the area of contact between the deformation layer 43 and the inner wall of the water channel 3; At the same time, since the width of the deformation layer 43 is smaller than that of the movable ring plate 4, when the deformation layer 43 expands and deforms due to heat, the deformation layer 43 will not contact or block the edge of the movable ring plate 4; In practical applications, according to the installation and operation environment of the synchronous motor and the average power during the operation of the synchronous motor, determine and judge the amount of heat dissipated during the operation of the synchronous motor: when the synchronous motor generates more heat and the heat is not easily dissipated, water channels 3 are provided on both the inner surface and the outer surface of the water jacket core 1 to fully increase the area of the water channels 3 on the water-cooled machine base and the contact area between the cooling water and the water channels 3, improving the heat dissipation and cooling effect on the synchronous motor; when the synchronous motor generates less heat and the heat is easily dissipated, water channels 3 are provided on the outer surface of the water jacket core 1 to ensure the heat dissipation effect and reduce the heat dissipation energy consumption; when the synchronous motor generates more heat and the heat is easily dissipated, water channels 3 are provided on the inner surface of the water jacket core 1 to reduce the distance between the cooling water and the heat-generating components inside the synchronous motor and the heat transfer distance, facilitating the heat exchange between the heat and the cooling water, thereby balancing the heat dissipation energy consumption and the heat dissipation effect.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-pole synchronous motor with a water-cooled base, including a water-cooled base, the water-cooled base includes a water jacket core (1), end plates (11) are installed at both ends of the water jacket core (1), a junction box (12) is installed on the water jacket core (1), evenly distributed water channels (3) are provided on the outer surface of the water jacket core (1), an outer cover plate (2) is installed on the water channels (3), and a water inlet pipe (13) and a water outlet pipe (14) are installed on the outer cover plate (2); It is characterized in that: A flow-through port (31) is provided on the water jacket core (1), the flow-through port (31) connects adjacent water channels (3), a blocking block (32) is installed in the water channels (3), and the blocking block (32) and the flow-through port (31) cooperate with each other to divide the water channels (3) into two parts connected end to end. The liquid flow directions in the two parts of the water channels (3) are opposite, and the liquid flows in an S shape in each part of the water channels (3); A movable ring plate (4) is installed in the water channels (3), the movable ring plates (4) are connected to each other through connecting rods (41), the end of the movable ring plate (4) is close to the water outlet pipe (14), an expansion bag (5) is installed between the movable ring plate (4) and the side wall of the water channels (3), a connecting bag (51) is installed on the expansion bag (5), a fixing rod (151) is installed on the water outlet pipe (14), a fixing ring (15) is installed on the fixing rod (151), and an elastic sleeve (152) is installed on the fixing ring (15). One section of the elastic sleeve (152) away from the fixing ring (15) is inserted into the water outlet pipe (14); Micropores are provided on the surfaces of the expansion bag (5) and the connecting bag (51). When the expansion bag (5) bulges, it pushes the movable ring plate (4) to move in the width direction in the water channels (3).

2. The multi-pole synchronous motor with a water-cooled machine base according to claim 1, characterized in that: The outer cover plate (2) includes an upper plate (21) and a lower plate (22), and the upper plate (21) and the lower plate (22) respectively correspond to the two parts separated from the water channels (3); Protrusions are provided on the surface of the outer cover plate (2), grooves are provided on the movable ring plate (4), and the protrusions are inserted into the grooves. The length directions of the protrusions and the grooves are the same as the width direction of the water channels (3).

3. The multi-pole synchronous motor with a water-cooled base according to claim 1, characterized in that: Reinforcing plates (42) are installed in the movable ring plate (4), multiple groups of reinforcing plates (42) are provided, and the cross-sectional shape of the reinforcing plates (42) is in the shape of an H.

4. The multi-pole synchronous motor with a water-cooled base according to claim 1, characterized in that: Elastic rods (153) are installed inside the side wall of the elastic sleeve (152), and the elastic rods (153) drive the elastic sleeve (152) to close to the inner wall of the water outlet pipe (14); A magnetic block (154) is installed at one end of the elastic sleeve (152) away from the fixing ring (15). There is a magnetic attraction force between the magnetic block (154) and the water outlet pipe (14). An attraction groove is provided on the inner wall of the water outlet pipe (14), and the magnetic block (154) is snapped into the attraction groove under the action of the magnetic attraction force; The fixing rod (151) is located outside the elastic sleeve (152).

5. The multi-pole synchronous motor with a water-cooled machine base according to claim 2, wherein: The height of the protrusion is greater than the depth of the groove, the width of the movable ring plate (4) is greater than the depth of the water tank channel (3), and the movable ring plate (4) is installed between the outer cover plate (2) and the water tank channel (3) by interference fit.

6. The multi-pole synchronous motor with a water-cooled machine base according to claim 1, characterized in that: A deformation layer (43) is installed on the surface of the movable ring plate (4). An air gap cavity is formed in the deformation layer (43), and a movable liquid is filled in the air gap cavity. The volume of the movable liquid expands as the temperature rises.

7. The multi-pole synchronous motor with a water-cooled base according to claim 6, characterized in that: The width of the deformation layer (43) is smaller than the width of the movable ring plate (4).

8. The multi-pole synchronous motor with a water-cooled base according to any one of claims 1-7, characterized in that: The positions of the water tank channels (3) on the surface of the water jacket core (1) include various types: the water tank channels (3) are arranged on the outer surface of the water jacket core (1), the water tank channels (3) are arranged on the inner surface of the water jacket core (1), and the water tank channels (3) are arranged on both the outer surface and the inner surface of the water jacket core (1).

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