A disc-type permanent magnet motor for oilfield water injection

Abstract

The present invention discloses a disc-type permanent magnet motor for oilfield water injection, belonging to the field of disc-type permanent magnet motors, including a housing. A yoke is fixedly connected to the left end of the housing. A notch is provided on the outer surface of the right end of the housing, and a gas guiding component is arranged inside the notch. The gas guiding component includes an extrusion part and a ventilation part. The extrusion part includes a storage groove formed inside the housing, and an extrusion plate is slidably connected to the inner surface of the storage groove. It can be realized that by setting the gas guiding component, continuously injecting gas into the housing and using the gas flow for heat exchange, the working temperature of the motor can be maintained within an appropriate range, so as to improve the working stability of the motor while meeting the long-term working requirements of the oilfield water injection motor. At the same time, by arranging the gas guiding component inside the housing, not only can the heat dissipation efficiency of the motor be guaranteed, but also the influence of the heat dissipation system on the volume of the motor can be reduced, thereby ensuring that the motor has a good power density.

Description

Technical Field

[0001] The present invention relates to the field of disc permanent magnet motors, and more specifically, to a disc permanent magnet motor for oilfield water injection. Background Art

[0002] Oilfield water injection is a common method to improve oil recovery in oil production. By injecting high-pressure water into oil wells, the oil and gas in the oil reservoir are pushed towards the production wells, thereby improving the oil and gas recovery efficiency. The oilfield water injection system usually includes a water injection pump station and a motor. As the power source, the motor plays a decisive role in the operating efficiency and energy consumption of the entire system. The disc permanent magnet motor has the characteristics of high torque density and high efficiency, and can provide stable and strong power output, and is more widely used in the oilfield water injection system.

[0003] Due to the influence of compact structure, high power density and material factors, the internal temperature of the disc permanent magnet motor will increase significantly after working for a period of time. Therefore, heat dissipation and cooling are required during the operation of the motor to ensure the normal operation of the disc permanent magnet motor. For example, the Chinese patent with the publication number CN212627459U discloses a heat dissipation device for a disc permanent magnet direct drive motor, which realizes air-cooled heat dissipation by connecting the air outlet of the fan to the inside of the heat dissipation cavity. There is no need to add cooling medium regularly, which reduces the operating cost of the motor and can achieve certain energy-saving and emission-reduction effects;

[0004] When the existing disc permanent magnet motor is working, it uses the method of blowing air by an external fan to cool the motor by air cooling. However, setting up a fan or a liquid circulation cooling device will increase the volume of the motor, resulting in a decrease in the power density of the disc permanent magnet motor. And the method of air cooling by using a fan will additionally increase the energy consumption of the disc permanent magnet motor during operation, which will increase the oilfield water injection production cost. Moreover, due to the compact internal structure of the disc permanent magnet motor, the gas cannot directly contact the inside of the stator. Therefore, it is difficult to effectively dissipate heat from the inside of the stator by using a single air blowing method, which will also affect the heat dissipation quality of the motor. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a disc permanent magnet motor for oilfield water injection, which can realize the continuous injection of gas into the inside of the housing by setting a gas guiding component, and use the gas flow to exchange heat, so as to keep the working temperature of the motor within an appropriate range, and further be able to meet the long-term working requirements of the oilfield water injection motor while improving the working stability of the motor. At the same time, by setting the gas guiding component inside the housing, not only can the heat dissipation efficiency of the motor be ensured, but also the influence of the heat dissipation system on the volume of the motor can be reduced, so as to ensure that the motor has good power density.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A disc permanent magnet motor for oilfield water injection, comprising a housing, a yoke is fixedly connected to the left end of the housing, a notch is formed on the outer surface of the right end of the housing, a gas guiding assembly is arranged inside the notch, and the gas guiding assembly includes an extrusion part and a ventilation part;

[0008] The extrusion part includes a storage groove formed inside the housing, an extrusion plate is slidably connected to the inner surface of the storage groove, a sliding groove is formed on the inner surface of the notch, the extrusion plate penetrates through the sliding groove to the outside of the notch, an elastic plate is hinged to the outer surface of the extrusion plate, and one side of the elastic plate away from the extrusion plate is fixedly connected to the inner surface of the notch;

[0009] The ventilation part includes a bladder fixedly connected to the outer surface of the extrusion plate, one side of the bladder away from the extrusion plate is fixedly connected to the inner surface of the storage groove, an air outlet pipe is fixedly connected to the outer surface of the bladder, and one end of the air outlet pipe away from the bladder penetrates into the housing.

[0010] Furthermore, the left end of the housing is open, a second spring is fixedly connected to the side of the extrusion plate away from the bladder, one end of the second spring away from the extrusion plate is fixedly connected to the inner surface of the storage groove, an air inlet pipe is embedded and fixedly connected inside the housing, the air inlet pipe is communicated with the inside of the bladder, the elastic plate is arc-shaped, and the numbers of the notch, the bladder, and the storage groove are several groups and are distributed in a circular array.

[0011] Furthermore, a support assembly is arranged outside the housing, the support assembly includes a mounting plate fixedly connected to the yoke, mounting holes are formed on the outer surface of the mounting plate, a mounting sleeve is embedded and fixedly connected inside the mounting plate, a bearing is fixedly connected to the inner surface of the mounting sleeve, and an output shaft is rotatably connected to the mounting sleeve through the bearing.

[0012] Furthermore, the output shaft penetrates through the mounting plate to the left side through the mounting sleeve, a cover plate is fixedly connected to the outer surface of the right end of the housing, and the right end of the output shaft is rotatably connected to the inner surface of the cover plate.

[0013] Furthermore, a body assembly is arranged inside the housing, the body assembly includes a bushing fixedly connected to the inner surface of the housing, the bushings are distributed in a circular ring shape, a stator disc is fixedly connected to the outer surface of the bushing, the numbers of the stator discs are several groups and are distributed in a circular array, a fixing sleeve is fixedly connected to the outer surface of the output shaft, and the numbers of the fixing sleeves are two groups and are symmetrically distributed.

[0014] Furthermore, a sealing sleeve is fixedly connected to the inner surface of the yoke, a first rotor and a second rotor are respectively fixedly connected to the outer surfaces of the two fixing sleeves, and the first rotor and the second rotor are symmetrically distributed at the left and right ends of the stator disc.

[0015] Further, a heat dissipation component is arranged on the outer side of the housing. The heat dissipation component includes a material storage pipe fixedly connected to the outer surface of the housing. The material storage pipe is annular. A heat dissipation plate is fixedly connected to the inner surface of the material storage pipe. The heat dissipation plate is annular and penetrates to the outside of the material storage pipe. The number of the heat dissipation plates is two groups and they are distributed in parallel. Through holes are uniformly formed on the outer surface of the heat dissipation plate. A second diversion groove is embedded and formed on the inner sides of the housing and the bushing. The second diversion groove is distributed in an annular shape.

[0016] Further, a first diversion groove is embedded and formed on the inner side of the housing. One end of the first diversion groove is communicated with the inside of the material storage pipe and the other end penetrates to the inside of the second diversion groove. An overflow pipe one, an overflow pipe two, and an overflow pipe three are embedded and formed on the inner side of the stator disk. The overflow pipe two is respectively communicated with the inside of the overflow pipe one and the overflow pipe three. Both the overflow pipe one and the overflow pipe three are communicated with the inside of the second diversion groove.

[0017] Further, an extrusion component is arranged inside the second diversion groove. The extrusion component includes a connecting pipe fixedly connected to the inner surface of the second diversion groove. The connecting pipe penetrates to the outside of the housing. Material discharge holes are symmetrically formed on the outer surface of the connecting pipe. The material discharge holes are located inside the second diversion groove. A piston plate is slidably connected to the inner surface of the connecting pipe. A pressing rod is fixedly connected to the outer surface of the upper end of the piston plate. The upper end of the pressing rod penetrates to the upper side of the connecting pipe and is slidably connected with the connecting pipe.

[0018] Further, a sliding seat is fixedly connected to the upper end of the pressing rod. A first spring is fixedly connected to the outer surface of the upper end of the piston plate. The first spring is located outside the pressing rod. A connecting rod is fixedly connected to the right end of the output shaft. The connecting rod penetrates to the outside of the cover plate and is rotatably connected with the cover plate. A fixed disk is fixedly connected to the outer surface of the connecting rod. A swing rod is fixedly connected to the outer surface of the fixed disk. The swing rod is in an L-shaped structure. The swing rod is in sliding contact with the outer surface of the sliding seat. An extrusion seat is fixedly connected to the outer surface of the left end of the swing rod. The extrusion seat is in sliding contact with the outer surface of the elastic plate. The outer surfaces of both the extrusion seat and the sliding seat are arc-shaped.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] (1) By arranging the air guiding component in this solution, gas is continuously injected into the housing, and heat exchange is carried out by using gas flow, so that the working temperature of the motor is maintained within an appropriate range. Furthermore, the long-term working requirement of the oilfield water injection motor can be met while improving the working stability of the motor. At the same time, by arranging the air guiding component inside the housing, not only the heat dissipation efficiency of the motor can be ensured, but also the influence of the heat dissipation system on the volume of the motor can be reduced, so as to ensure that the motor has a good power density.

[0021] (2) By setting up a heat dissipation component, the cooling medium flows inside the stator disk, and the cooling medium transfers the heat inside the stator disk to the outside of the housing, so as to realize the cooling of the disk-type permanent magnet motor, keep the temperature inside the motor stator disk within an appropriate range, extend the working time of the motor, and further improve the working stability of the motor;

[0022] (3) By setting up an extrusion component, the extrusion of the cooling medium can accelerate the flow rate of the cooling medium inside the stator disk, effectively improve the heat dissipation and cooling efficiency of the disk-type motor. At the same time, the cooling medium inside each stator disk stays inside the stator disk, so that the cooling medium has sufficient time to absorb the heat inside the stator disk, and further improve the heat dissipation quality of the disk-type permanent magnet motor. Description of the Drawings

[0023] Figure 1 Schematic diagram of the overall structure of the present invention Figure 1 ;

[0024] Figure 2 Schematic diagram of the overall structure of the present invention Figure 2 ;

[0025] Figure 3 Right view of the overall structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 Cross-sectional view taken along line A-A in [the relevant part of the present invention];

[0027] Figure 5 For the present invention Figure 4 Cross-sectional view taken along line B-B in [the relevant part of the present invention];

[0028] Figure 6 For the present invention Figure 3 Cross-sectional view taken along line C-C in [the relevant part of the present invention];

[0029] Figure 7 For the present invention Figure 4 Enlarged view at D in [the relevant part of the present invention];

[0030] Figure 8 For the present invention Figure 5 Enlarged view at E in [the relevant part of the present invention];

[0031] Figure 9 For the present invention Figure 6 Enlarged view at F in [the relevant part of the present invention].

[0032] Explanation of the reference numerals in the drawings:

[0033] Support component; 11, mounting plate; 12, mounting hole; 13, housing; 14, cover plate; 15, output shaft; 16, mounting sleeve; 17, bearing; 18, yoke;

[0034] Body components; 21. Sealing sleeve; 22. Fixed sleeve; 23. Rotor I; 24. Stator disc; 25. Rotor II; 26. Bushing

[0035] Heat dissipation components; 31. Overflow pipe I; 32. Stock pipe; 33. Heat dissipation plate; 34. Overflow pipe II; 35. Flow guide groove I; 36. Flow guide groove II; 37. Overflow pipe III; 38. Through hole

[0036] Extrusion components; 41. Connecting rod; 42. Fixed disk; 43. Swing rod; 44. Connecting pipe; 45. Piston plate; 46. Spring I; 47. Pressing rod; 48. Slide seat; 49. Discharge hole

[0037] Air guiding components; 51. Extrusion seat; 52. Receiving groove; 53. Notch; 54. Slide groove; 55. Extrusion plate; 56. Elastic plate; 57. Bladder; 58. Outlet pipe; 59. Inlet pipe; 591. Spring II Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0039] Please refer to Figures 1 to 9 , a disc permanent magnet motor for oilfield water injection, including a housing 13, a yoke 18 is fixedly connected to the left end of the housing 13, a notch 53 is opened on the outer surface of the right end of the housing 13, an air guiding component is arranged inside the notch 53, and the air guiding component includes an extrusion part and a ventilation part;

[0040] The extrusion part includes a receiving groove 52 opened inside the housing 13, an extrusion plate 55 is slidably connected to the inner surface of the receiving groove 52, a slide groove 54 is opened on the inner surface of the notch 53, the extrusion plate 55 passes through the notch 53 to the outside through the slide groove 54, an elastic plate 56 is hinged to the outer surface of the extrusion plate 55, and the elastic plate 56 is fixedly connected to the inner surface of the notch 53 away from the extrusion plate 55;

[0041] The ventilation part includes a bladder 57 fixedly connected to the outer surface of the extrusion plate 55, the bladder 57 is fixedly connected to the inner surface of the receiving groove 52 away from the extrusion plate 55, an outlet pipe 58 is fixedly connected to the outer surface of the bladder 57, and one end of the outlet pipe 58 away from the bladder 57 penetrates into the housing 13.

[0042] The left end of the housing 13 is open. A second spring 591 is fixedly connected to the side of the pressing plate 55 away from the bladder 57. One end of the second spring 591 away from the pressing plate 55 is fixedly connected to the inner surface of the receiving groove 52. An air inlet pipe 59 is fixedly connected to the inside of the housing 13 in an embedded manner. The air inlet pipe 59 is communicated with the inside of the bladder 57. The elastic plate 56 is arc-shaped. The number of the notch 53, the bladder 57, and the receiving groove 52 is several groups and they are distributed in a circular array.

[0043] By adopting the above technical solution, when the disc permanent magnet motor provides power output for the oilfield water injection equipment, it is required that the motor can provide strong power and maintain stable operation for a long time. In order to improve the operation stability of the disc permanent magnet motor, it is necessary to maintain the motor operation stability within an appropriate range. Therefore, a gas guiding component is provided. During the operation of the motor, the elastic plate 56 inside the notch 53 is pressed. At this time, the elastic plate 56 gradually turns from a bent state to a straight state. One end of the elastic plate 56 is fixed to the inside of the notch 53. During the deformation process, it will push the pressing plate 55, so that the pressing plate 55 can slide along the inside of the receiving groove 52. When the pressing plate 55 moves, it will squeeze the bladder 57. The gas inside the bladder 57 enters the inside of the housing 13 through the air inlet pipe 59 under the action of pressure. When the pressing plate 55 moves, it will stretch the second spring 591. After the pressing force applied to the elastic plate 56 disappears, the elastic plate 56 rebounds elastically in the opposite direction under the action of the second spring 591 and its own elastic force. The pressing plate 55 moves towards the side of the second spring 591 under the action of the elastic force and stretches the bladder 57. At this time, a certain negative pressure will be formed inside the bladder 57. The gas outside the housing 13 will enter the inside of the bladder 57 through the air inlet pipe 59, so that the bladder 57 continues to inflate and expand. One-way valves are provided inside both the air inlet pipe 59 and the air outlet pipe 58, so that the gas can only flow in one direction. Through the compression and expansion of the bladder 57, the external gas can be injected into the inside of the housing 13, so as to realize the circulation and exchange of the gas inside and outside the housing 13. Through the gas flow, the inside of the housing 13 can be cooled, so that the working temperature of the motor is maintained within an appropriate range, and thus the working stability of the motor can be improved while meeting the long-term working requirements of the oilfield water injection motor. At the same time, by arranging the gas guiding component inside the housing 13, the heat dissipation efficiency of the motor can be guaranteed and the influence of the heat dissipation system on the volume of the motor can also be reduced, so as to ensure that the motor has good power density.

[0044] Such as Figure 1 、 Figure 2 And Figure 4As shown in the figure, a support assembly is provided on the outer side of the housing 13. The support assembly includes a mounting plate 11 fixedly connected to the yoke 18. Mounting holes 12 are formed on the outer surface of the mounting plate 11. An installation sleeve 16 is fixedly connected to the inner side of the mounting plate 11 in an embedded manner. A bearing 17 is fixedly connected to the inner surface of the installation sleeve 16. The output shaft 15 is rotatably connected to the installation sleeve 16 through the bearing 17.

[0045] The output shaft 15 passes through the mounting plate 11 to the left side of the mounting plate 11 through the installation sleeve 16. A cover plate 14 is fixedly connected to the outer surface of the right end of the housing 13. The right end of the output shaft 15 is rotatably connected to the inner surface of the cover plate 14.

[0046] An engine body assembly is provided inside the housing 13. The engine body assembly includes a bushing 26 fixedly connected to the inner surface of the housing 13. The bushing 26 is distributed in a circular ring shape. A stator disc 24 is fixedly connected to the outer surface of the bushing 26. The number of stator discs 24 is several groups and they are distributed in a circular array. A fixing sleeve 22 is fixedly connected to the outer surface of the output shaft 15. The number of fixing sleeves 22 is two groups and they are symmetrically distributed.

[0047] A sealing sleeve 21 is fixedly connected to the inner surface of the yoke 18. A first rotor 23 and a second rotor 25 are respectively fixedly connected to the outer surfaces of the two fixing sleeves 22. The first rotor 23 and the second rotor 25 are symmetrically distributed at the left and right ends of the stator disc 24.

[0048] By adopting the above technical solution, when the motor works, bolts are passed through the mounting holes 12 on the surface of the mounting plate 11 to clamp and fix the mounting plate 11. A yoke 18 is provided between the housing 13 and the mounting plate 11, so that the probability of magnetic leakage can be effectively reduced. The housing 13 fixedly supports the stator disc 24 through the bushing 26. A coil winding is provided inside the stator disc 24 to generate a magnetic field. The mounting plate 11 fixedly supports the bearing 17 through the installation sleeve 16, and thus rotatably supports the output shaft 15 through the bearing 17. The fixing sleeves 22 on the outer surface of the output shaft 15 are distributed on both sides of the stator disc 24. An air gap is formed between the first rotor 23, the second rotor 25 and the stator disc 24. The first rotor 23 and the second rotor 25 are fixedly supported through the fixing sleeves 22. Magnetic poles are provided inside the first rotor 23 and the second rotor 25. When the coil inside the stator disc 24 is energized, the coil generates a magnetic field to drive the first rotor 23 and the second rotor 25 to rotate. The first rotor 23 and the second rotor 25 drive the output shaft 15 to rotate through the fixing sleeves 22 to output power. The sealing sleeve 21 can seal between the output shaft 15 and the yoke 18, so that the probability of magnetic leakage can be further reduced. The cover plate 14 provided at the right end of the housing 13 can rotatably support the output shaft 15, so that the rotation of the output shaft 15 is more stable.

[0049] Such as Figure 1 、 Figure 5 、 Figure 6 AndFigure 7 As shown in the figure, a heat dissipation component is arranged on the outer side of the housing 13. The heat dissipation component includes a material storage pipe 32 fixedly connected to the outer surface of the housing 13. The material storage pipe 32 is annular. A heat dissipation plate 33 is fixedly connected to the inner surface of the material storage pipe 32. The heat dissipation plate 33 is annular and penetrates to the outside of the material storage pipe 32. The number of the heat dissipation plates 33 is two groups and they are distributed in parallel. Through holes 38 are uniformly arranged on the outer surface of the heat dissipation plate 33. A second diversion groove 36 is embedded and arranged on the inner sides of the housing 13 and the bushing 26. The second diversion groove 36 is annularly distributed.

[0050] A first diversion groove 35 is embedded and arranged on the inner side of the housing 13. One end of the first diversion groove 35 is communicated with the inside of the material storage pipe 32 and the other end penetrates to the inside of the second diversion groove 36. An overflow pipe 31, an overflow pipe 34 and an overflow pipe 37 are embedded and arranged on the inner side of the stator disc 24. The overflow pipe 34 is respectively communicated with the inside of the overflow pipe 31 and the overflow pipe 37. The overflow pipe 31 and the overflow pipe 37 are both communicated with the inside of the second diversion groove 36.

[0051] By adopting the above technical scheme, an appropriate amount of cooling medium is filled in the material storage pipe 32 and is annularly distributed on the outer side of the housing 13, so that the housing 13 can be cooled to a certain extent by the cooling medium. After the heat of the housing 13 is transferred into the cooling medium, the heat is transferred to the outside of the material storage pipe 32 through the heat dissipation plate 33. The heat dissipation plate 33 can accelerate the heat loss so that the temperature of the cooling medium can be maintained within an appropriate range. The heat dissipation plate 33 can improve the cooling efficiency of the cooling medium to a certain extent by increasing the contact area with the air. The through holes 38 on the surface of the heat dissipation plate 33 can enable the cooling medium to flow inside the material storage pipe 32. The cooling medium will enter the second diversion groove 36 through the first diversion groove 35. The second diversion groove 36 is annularly distributed on the inner sides of the housing 13 and the bushing 26. The cooling medium inside the second diversion groove 36 will enter the inner side of the stator disc 24 through the overflow pipe 31. The overflow pipe 34 is respectively communicated with the inside of the overflow pipe 31 and the overflow pipe 37, so that the cooling medium flows between the overflow pipe 34 and the overflow pipe 37. The heat inside the stator disc 24 can be taken away through the flow of the cooling medium, so as to cool and lower the temperature of the stator disc 24. A one-way valve is arranged inside the overflow pipe 31 to enable the cooling medium to flow unidirectionally inside the overflow pipe 31. When the disc-type permanent magnet motor works, the heat inside the stator disc 24 is transferred to the outside of the housing 13 through the flow of the cooling medium, so that the cooling and temperature reduction of the disc-type permanent magnet motor can be realized, so that the temperature inside the motor stator disc 24 can be kept within an appropriate range, while prolonging the working time of the motor and further improving the working stability of the motor.

[0052] As Figure 4 , Figure 6 andFigure 8 As shown, an extrusion assembly is provided inside the second diversion groove 36. The extrusion assembly includes a connecting pipe 44 fixedly connected to the inner surface of the second diversion groove 36. The connecting pipe 44 penetrates to the outside of the housing 13. The outer surface of the connecting pipe 44 is symmetrically provided with discharge holes 49. The discharge holes 49 are located inside the second diversion groove 36. A piston plate 45 is slidably connected to the inner surface of the connecting pipe 44. The upper outer surface of the piston plate 45 is fixedly connected to a pressure rod 47. The upper end of the pressure rod 47 penetrates to the upper side of the connecting pipe 44 and is slidably connected to the connecting pipe 44.

[0053] The upper end of the pressure rod 47 is fixedly connected to a sliding seat 48. The upper outer surface of the piston plate 45 is fixedly connected to a first spring 46. The first spring 46 is located outside the pressure rod 47. The right end of the output shaft 15 is fixedly connected to a connecting rod 41. The connecting rod 41 penetrates to the outside of the cover plate 14 and is rotatably connected to the cover plate 14. The outer surface of the connecting rod 41 is fixedly connected to a fixed disk 42. The outer surface of the fixed disk 42 is fixedly connected to a swing rod 43. The swing rod 43 is in an L-shaped structure. The swing rod 43 is in sliding contact with the outer surface of the sliding seat 48. The left end outer surface of the swing rod 43 is fixedly connected to an extrusion seat 51. The extrusion seat 51 is in sliding contact with the outer surface of the elastic plate 56. The outer surfaces of the extrusion seat 51 and the sliding seat 48 are both arc-shaped.

[0054] By adopting the above technical solution, when the motor works, the output shaft 15 drives the connecting rod 41 and the fixed disk 42 to rotate synchronously. During the rotation of the fixed disk 42, the swing rod 43 is driven to rotate synchronously. During the rotation of the swing rod 43, the extrusion seat 51 below it is driven to make a circular motion synchronously. During the movement of the extrusion seat 51, it contacts the upper surface of the elastic plate 56. When the outer surface of the extrusion seat 51 is arc-shaped and contacts the surface of the elastic plate 56, the extrusion seat 51 gradually extrudes the elastic plate 56, thereby driving the air guide assembly to start running through the elastic deformation of the elastic plate 56. At the same time, during the movement of the swing rod 43, it rotates and contacts the outer surface of the sliding seat 48. Under the extrusion force of the swing rod 43, the sliding seat 48 drives the pressure rod 47 to move downward. During the downward movement of the pressure rod 47, the piston plate 45 is driven to slide downward along the inner surface of the connecting pipe 44. The cooling medium in the diversion groove II 36 enters the inside of the connecting pipe 44 through the discharge hole 49. During the downward movement of the piston plate 45, the cooling medium inside the connecting pipe 44 is extruded, so that the cooling medium inside the connecting pipe 44 is extruded into the overflow pipe I 31 inside the stator disk 24, thereby accelerating the flow of the cooling medium inside the overflow pipe I 31, the overflow pipe II 34 and the overflow pipe III 37, and further effectively improving the heat dissipation and cooling efficiency of the disc motor. During the downward movement of the piston plate 45, the first spring 46 is stretched. When the swing rod 43 is separated from the sliding seat 48, the sliding plate and the pressure rod 47 move backward and reset under the elastic action of the first spring 46. The number of the connecting pipes 44 and the sliding seats 48 is several groups and they are distributed in a circular array. During the rotation of the swing rod 43, it sequentially contacts the outer surface of the sliding seat 48, thereby gradually extruding the sliding seat 48. When a group of cooling medium flows under pressure, the cooling medium inside the other groups of stator disks 24 stays inside the stator disks 24, so that the cooling medium has sufficient time to absorb the heat inside the stator disks 24, and further improving the heat dissipation quality of the disc permanent magnet motor.

[0055] Usage method: When the disc permanent magnet motor is working, when the coil inside the stator disc 24 is energized, the coil generates a magnetic field, which drives the output shaft 15 to rotate through the first rotor 23 and the second rotor 25. When the output shaft 15 rotates, it drives the swing rod 43 to rotate synchronously through the connecting rod 41. The swing rod 43 drives the pressing seat 51 to rotate and contact the upper surface of the elastic plate 56. The pressing seat 51 presses the elastic plate 56. The elastic plate 56 gradually flips from a bent state to a straight state and pushes the pressing plate 55. The pressing plate 55 presses the bladder 57. The gas inside the bladder 57 enters the inside of the housing 13 through the intake pipe 59. Through the gas flow, the inside of the housing 13 can be cooled. The cooling medium will enter the inside of the second diversion groove 36 through the first diversion groove 35. Through the flow of the cooling medium, the heat inside the stator disc 24 can be taken away, so as to cool down the stator disc 24. During the movement of the swing rod 43, it will rotate and contact the outer surface of the sliding seat 48. During the downward movement of the pressing rod 47, it will drive the piston plate 45 to slide downward along the inner surface of the connecting pipe 44, and squeeze the cooling medium inside the connecting pipe 44 into the first overflow pipe 31 inside the stator disc 24, so as to accelerate the flow of the cooling medium inside the first overflow pipe 31, the second overflow pipe 34 and the third overflow pipe 37, and then effectively improve the heat dissipation and cooling efficiency of the disc motor.

[0056] The above is only a preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A disc-type permanent magnet motor for oilfield water injection, comprising a housing (13) and a stator disc (24), characterized in that: A magnetic yoke (18) is fixedly connected to the left end of the shell (13), a notch (53) is provided on the outer surface of the right end of the shell (13), an air guide component is provided inside the notch (53), and the air guide component comprises an extrusion portion and a ventilation portion; The extrusion portion comprises a receiving groove (52) provided inside the shell (13); an extrusion plate (55) is slidably connected to the inner surface of the receiving groove (52); a slide groove (54) is provided on the inner surface of the slot (53); the extrusion plate (55) passes through the slide groove (54) to the outside of the slot (53); an elastic plate (56) is hingedly connected to the outer surface of the extrusion plate (55); and the elastic plate (56) is fixedly connected to the inner surface of the slot (53) on a side away from the extrusion plate (55); The ventilation portion comprises a sac (57) fixedly connected to the outer surface of the extrusion plate (55); the side of the sac (57) away from the extrusion plate (55) is fixedly connected to the inner surface of the storage groove (52); the outer surface of the sac (57) is fixedly connected to an air outlet pipe (58); the end of the air outlet pipe (58) away from the sac (57) penetrates into the interior of the shell (13); A heat dissipation component is arranged outside the shell (13), and the heat dissipation component comprises a material storage tube (32) fixedly connected to the outer surface of the shell (13), the material storage tube (32) is in an annular shape, and a heat dissipation plate (33) is fixedly connected to the inner surface of the material storage tube (32), the heat dissipation plate (33) is in an annular shape and penetrates the outer side of the material storage tube (32), the heat dissipation plates (33) are in two groups and are distributed in parallel, and through holes (38) are evenly opened on the outer surface of the heat dissipation plates (33), and the shell (13) and the bushing (26) are embedded with a second guide groove (36), and the second guide groove (36) is distributed in an annular shape; A guide groove 1 (35) is embedded inside the shell (13), one end of the guide groove 1 (35) is connected to the inside of the material storage pipe (32) and the other end passes through the inside of the guide groove 2 (36). An overflow pipe 1 (31), an overflow pipe 2 (34) and an overflow pipe 3 (37) are embedded inside the stator plate (24), the overflow pipe 2 (34) is connected to the inside of the overflow pipe 1 (31) and the overflow pipe 3 (37) respectively, and the overflow pipe 1 (31) and the overflow pipe 3 (37) are both connected to the inside of the guide groove 2 (36).

2. The disc-type permanent magnet motor for oilfield water injection according to claim 1, characterized in that: The left end of the shell (13) is open; a second spring (591) is fixedly connected to the side of the extrusion plate (55) away from the capsule (57); an end of the second spring (591) away from the extrusion plate (55) is fixedly connected to the inner surface of the storage groove (52); an air intake pipe (59) is embedded and fixedly connected to the inner side of the shell (13); the air intake pipe (59) is connected to the inside of the capsule (57); the elastic plate (56) is arc-shaped; the notch (53), the capsule (57), and the storage groove (52) are provided in a plurality of groups and are distributed in a ring array.

3. The disc-type permanent magnet motor for oilfield water injection according to claim 2 is characterized in that: A support assembly is arranged on the outside of the housing (13), the support assembly comprising a mounting plate (11) fixedly connected to the yoke (18), a mounting hole (12) being provided on the outer surface of the mounting plate (11), a mounting sleeve (16) being embedded and fixedly connected on the inner side of the mounting plate (11), a bearing (17) being fixedly connected to the inner surface of the mounting sleeve (16), and the mounting sleeve (16) being rotatably connected to the output shaft (15) via the bearing (17).

4. The disc-type permanent magnet motor for oilfield water injection according to claim 3 is characterized in that: The output shaft (15) passes through the mounting sleeve (16) to the left side of the mounting plate (11); the outer surface of the right end of the housing (13) is fixedly connected to a cover plate (14); and the right end of the output shaft (15) is rotatably connected to the inner surface of the cover plate (14).

5. The disc-type permanent magnet motor for oilfield water injection according to claim 4, characterized in that: An organic body component is arranged on the inner side of the shell (13), and the organic body component comprises a bushing (26) fixedly connected to the inner surface of the shell (13), the bushing (26) being distributed in a circular ring shape, the outer surface of the bushing (26) being fixedly connected to a stator disk (24), the number of the stator disks (24) being several groups and being distributed in a ring array, and the outer surface of the output shaft (15) being fixedly connected to a fixing sleeve (22), the number of the fixing sleeves (22) being two groups and being distributed symmetrically.

6. The disc-type permanent magnet motor for oilfield water injection according to claim 5, characterized in that: The inner surface of the magnetic yoke (18) is fixedly connected to a sealing sleeve (21), and the outer surfaces of the two sets of fixed sleeves (22) are respectively fixedly connected to a rotor 1 (23) and a rotor 2 (25), and the rotor 1 (23) and the rotor 2 (25) are symmetrically distributed at the left and right ends of the stator disk (24).

7. The disc-type permanent magnet motor for oilfield water injection according to claim 6, characterized in that: An extrusion assembly is arranged inside the second guide groove (36), and the extrusion assembly includes a connecting pipe (44) fixedly connected to the inner surface of the second guide groove (36), the connecting pipe (44) passes through to the outside of the shell (13), and the outer surface of the connecting pipe (44) is symmetrically provided with discharge holes (49), and the discharge holes (49) are located on the inner side of the second guide groove (36). The inner surface of the connecting pipe (44) is slidably connected to a piston plate (45), and the outer surface of the upper end of the piston plate (45) is fixedly connected to a pressure rod (47), and the upper end of the pressure rod (47) passes through the upper side of the connecting pipe (44) and is slidably connected to the connecting pipe (44).

8. The disc-type permanent magnet motor for oilfield water injection according to claim 7, characterized in that: The upper end of the pressure rod (47) is fixedly connected to a slide seat (48); the outer surface of the upper end of the piston plate (45) is fixedly connected to a spring 1 (46); the spring 1 (46) is located outside the pressure rod (47); the right end of the output shaft (15) is fixedly connected to a connecting rod (41); the connecting rod (41) passes through the outside of the cover plate (14) and is rotatably connected to the cover plate (14); the outer surface of the connecting rod (41) is fixedly connected to a fixed disk (42); the outer surface of the fixed disk (42) is fixedly connected to a swing rod (43); the swing rod (43) is L-shaped; the swing rod (43) is in sliding contact with the outer surface of the slide seat (48); the left end of the swing rod (43) is fixedly connected to an extrusion seat (51); the extrusion seat (51) is in sliding contact with the outer surface of the elastic plate (56); the outer surfaces of the extrusion seat (51) and the slide seat (48) are both arc-shaped.

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