WO2015096547A1 - Submersible permanent magnet synchronous motor - Google Patents

Submersible permanent magnet synchronous motor Download PDF

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Publication number
WO2015096547A1
WO2015096547A1 PCT/CN2014/089544 CN2014089544W WO2015096547A1 WO 2015096547 A1 WO2015096547 A1 WO 2015096547A1 CN 2014089544 W CN2014089544 W CN 2014089544W WO 2015096547 A1 WO2015096547 A1 WO 2015096547A1
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WO
WIPO (PCT)
Prior art keywords
rotor
hole
magnetic steel
assembly
stator
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Application number
PCT/CN2014/089544
Other languages
French (fr)
Chinese (zh)
Inventor
郝双晖
刘吉柱
刘杰
蔡一
Original Assignee
浙江中科德润科技有限公司
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Publication of WO2015096547A1 publication Critical patent/WO2015096547A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/132—Submersible electric motors

Definitions

  • the invention relates to a submersible permanent magnet synchronous motor, belonging to the technical field of mechanical manufacturing.
  • Submersible motors are widely used in oil fields to drive submersible electric pumps to extract crude oil.
  • Submersible electric pump system is an important equipment for oil field production.
  • the traditional submersible electric pump system is mainly driven by asynchronous motor.
  • the existing oil production system has the following problems in the oil production supporting process:
  • asynchronous motors usually use variable frequency control.
  • the energy loss is severe, which greatly reduces the motor control accuracy and thus reduces the system efficiency.
  • submersible permanent magnet synchronous motors have been applied for their high efficiency and energy saving. They are usually placed under the well according to the operation requirements, and the equipment is surrounded by high-pressure oil-water mixed liquid.
  • the joint ends of the existing submersible permanent magnet synchronous motor generally do not have the sealing property; the stator and the rotor of the motor are usually a single-section structure.
  • the motor power is required to be large, the cost is greatly increased, because the submersible motor is fine. The long structure, so the manufacturing process will also be reduced; the existing motor almost does not consider the heat dissipation problem.
  • the motor is required to pass a large current, the heat generated in the downhole motor cannot be dissipated in time, so that the motor is easily burned out.
  • the application No. 200910137764.4 discloses a multi-section servo submersible motor which has a multi-section structure although the rotor and the stator are also multi-section, and the motor is adopted by the rotor and the stator.
  • the multi-section solution solves the problem of increasing the power level of the motor to a certain extent, but the multi-section housing greatly increases the difficulty and cost of the manufacturing and assembly process.
  • it is more important that the multi-section housing also results in a greatly increased requirement for motor tightness, which deteriorates the sealing of the entire motor.
  • the adjacent two rotor shafts of the motor are coupled by a coupling, so the life of the coupling directly affects the reliability.
  • the patent application No. 201010614682.7 discloses a low-speed direct-drive permanent magnet synchronous submersible motor, which is a single-section motor, which adopts a rotor 14-pole and stator 18-slot scheme, which solves the low-speed problem to a certain extent, but is large.
  • the torque output problem is not well resolved.
  • the number of poles of the rotor of the motor and the number of slots of the stator are both too large, which greatly increases the manufacturing cost, and is not an optimization scheme from the perspective of the electromagnetic scheme of the motor. Also, the problem of downhole sealing and heat dissipation of the motor are not considered.
  • the technical problem to be solved by the present invention is to provide a submersible permanent magnet synchronous motor according to the deficiencies of the prior art, which adopts a motor housing assembly with a one-piece structure, a stator assembly and a rotor assembly of a multi-section structure,
  • the 10-pole rotor and 12-slot stator are used to optimize the electromagnetic scheme, which improves the operation reliability and motor performance.
  • the hollow spindle can realize the oil circulation in the motor compartment, thus solving the heat dissipation problem; low torque and high torque can be realized. It is suitable for various working conditions of pumping oil through electric pump.
  • a submersible permanent magnet synchronous motor includes a motor housing, and a stator and a rotor are disposed correspondingly in the motor housing, and two ends of the motor housing are respectively sealed and connected to other external devices through a coupling device to form an integral body.
  • the housing assembly of the structure; the stator and the rotor are respectively a stator assembly and a rotor assembly of a multi-section structure, the stator assembly is fixed on the housing assembly, and the rotor assembly is disposed in the stator assembly Internally, the stator assembly and the rotor assembly are pressed and positioned; the casing assembly is filled with oil.
  • the housing assembly includes a housing and an output end coupling end and a tail end coupling head respectively disposed at two ends of the housing, wherein the output coupling head and the housing are connected by a thrust bearing; the output end coupling head is used for Connected to the external protector and pump of the submersible permanent magnet synchronous motor, accessing the submersible cable, and filling the interior of the housing; the tail end coupling is used for mounting the encoder, and external sealing device and control Connected.
  • the stator assembly includes a plurality of single-section iron cores, and two adjacent single-core iron cores are connected to each other by inter-section press-fit to form a multi-section stator core, and two of the multi-section stator cores are The pressing ring and the circlip are respectively arranged from the center to the two sides, and the multi-section stator core is pressed and positioned.
  • the rotor assembly includes a magnetic steel assembly sleeved on a main shaft of the rotor, and a rotor output end sleeve and a rotor tail end sleeve are respectively disposed at two ends of the rotor main shaft;
  • the magnetic steel assembly is a multi-section structure It is formed by connecting a plurality of single-row magnetic steel groups through floating bearings, and each single-row magnetic steel group is formed by uniformly arranging 10 magnetic steels on the circumference.
  • the ten magnetic steels of the single-row magnetic steel group include eight standard magnetic steels and two key magnetic steels; the two ends of the standard magnetic steel and the key magnetic steel are respectively provided with steps in the axial direction, and a plurality of The steps on the standard magnetic steel and the keyway magnetic steel are combined into an annular groove, and a radial compression ring is arranged on the annular groove between two adjacent single-row magnetic steel groups; the two ends of the single-row magnetic steel group are further provided There is an axial compression ring.
  • the output end coupling head includes a body, and one end of the body is provided with a pipe thread for connecting with the casing, an oil injection hole is provided in a middle portion of the body, and a screw hole combination for connection is provided at the other end of the body;
  • the inside of the body is provided with a coupling threaded hole, an output hole, a bearing mounting hole, a pin coupling hole, an axial through hole, a curved bevel, a cable interface, a groove, a pipe thread, an axial oil hole and a radial oil hole.
  • the coupling threaded hole is evenly distributed on the circumference of the output end flange; the output hole is provided with an output shaft of the output motor; the thrust bearing is mounted and positioned in the bearing mounting hole; the thrust disk of the thrust bearing is in the Fixing in the pin coupling hole; the motor output shaft is disposed in the axial through hole; the input cable enters the casing through the cable interface through the curved bevel; the O-ring is disposed in the groove; the casing passes The pipe thread is sealed with the output end coupling; the oil is delivered to the inside of the motor through the radial oil hole and enters the axial oil hole.
  • the single-section iron core comprises a silicon steel sheet, and the silicon steel sheet is provided with a stator slot, a circular arc groove, a winding slot and a housing coupling groove, forming a 12-slot slotted stator core structure; winding coil installation On the stator slot, the cable passes through the circular arc groove, and the silicon steel sheet is connected to the stator core and the casing through the housing coupling groove.
  • the rotor main shaft is an elongated structure including an output end, an intermediate section and a tail end; the output end is a spline shaft; the middle section is a hollow shaft, and a plurality of oil passage holes are evenly distributed in the radial direction.
  • An elongated keyway for assembling the rotor assembly is a hollow shaft;
  • the output end is provided with a spline groove, a plug hole, a groove, a radial oil hole and a hollow shaft hole,
  • the spline groove is connected with the spline of the motor output shaft;
  • the thrust bearing is installed in the groove;
  • the middle section is provided with a radial oil passage hole and a hollow shaft hole;
  • the tail end is provided with a radial oil hole, Hollow shaft hole and encoder mounting hole.
  • the keyway magnetic steel is an arc-shaped sheet-like structure, including an arc-shaped outer surface and an inner surface. On both side edges of the outer surface, a step surface is respectively arranged in the axial direction, and one side edge of the inner surface is extended. A keyway for positioning the magnetic steel on the circumference is provided in the radial direction.
  • the present invention provides a submersible permanent magnet synchronous motor, which adopts a motor housing assembly with a one-piece structure, a stator assembly and a rotor assembly of a multi-section structure, and adopts a 10-pole rotor and a 12-slot stator.
  • the setting optimizes the electromagnetic scheme, thereby improving the performance of the motor;
  • the rotor main shaft is a hollow shaft, and the oil circulation in the motor cabin is realized by filling the inner cabin of the motor, thereby solving the heat dissipation problem;
  • Synchronous motor adopts modular design of components to improve assembly process, simple structure and flexible design according to needs.
  • the submersible permanent magnet synchronous motor of the invention can realize low speed and large torque, so the effect of driving the pump downhole is reliable and stable, and is suitable for use.
  • the range of pumping oil through all electric pumps in the underground is especially suitable for screw pumping.
  • FIG. 1 is an overall structural diagram of a submersible permanent magnet synchronous motor of the present invention
  • FIG. 2 is a second overall structural diagram of a submersible permanent magnet synchronous motor of the present invention.
  • Figure 3a is an enlarged view of the output end of the submersible permanent magnet synchronous motor of Figure 1;
  • Figure 3b is an enlarged view of the tail end of the submersible permanent magnet synchronous motor of Figure 2;
  • Figure 5 is an exploded view of the structure of the housing assembly of Figure 4.
  • Figure 6a is a structural diagram of the output terminal of Figure 5;
  • Figure 6b is a second structural diagram of the output end connector of Figure 5;
  • Figure 7 is a cross-sectional view of the output end coupling of Figure 5;
  • Figure 8 is a schematic structural view of the tail end coupling head of Figure 5;
  • Figure 9 is a cross-sectional view of the tail end coupling of Figure 5.
  • Figure 10 is an exploded view of the composition of the stator assembly of Figure 4.
  • Figure 11 is a schematic view showing the structure of a single core of the stator of Figure 10;
  • Figure 12 is a structural view of a silicon steel sheet of the stator core of Figure 11;
  • Figure 13 is a structural exploded view of the rotor assembly of Figure 4.
  • Figure 14 is a schematic view showing the main structure of the rotor of Figure 13;
  • Figure 15 is a partial enlarged view of the rotor of Figure 14;
  • Figure 16 is an exploded view showing the composition of the sleeve of the rotor output end of Figure 13;
  • Figure 17 is an overall structural view of the output end bushing of Figure 16;
  • Figure 18 is a cross-sectional view of the output end bushing of Figure 16.
  • Figure 19 is an exploded view showing the composition of the sleeve end of the rotor tail portion of Figure 13;
  • Figure 20 is an overall structural view of the tail end bushing of Figure 19;
  • Figure 21 is a cross-sectional view of the tail end bushing of Figure 19;
  • Figure 22 is a structural diagram of the rotor main shaft of Figure 13;
  • Figure 23 is a second structural view of the rotor main shaft of Figure 13;
  • Figure 24a is an enlarged view of the output end of the rotor main shaft of Figure 22;
  • Figure 24b is an enlarged view of the tail end of the rotor main shaft of Figure 23;
  • Figure 24c is an enlarged view of the middle section of the rotor main shaft of Figure 22;
  • Figure 25 is a cross-sectional view of the main shaft of the rotor of Figure 13;
  • Figure 26a is an enlarged view of the output end of the rotor main shaft of Figure 25;
  • Figure 26b is an enlarged view of the tail end of the rotor main shaft of Figure 25;
  • Figure 26c is an enlarged view of the middle section of the rotor main shaft of Figure 25;
  • Figure 27 is a structural exploded view of the rotor magnet assembly of Figure 13;
  • Figure 28 is a schematic structural view of the rotor standard magnetic steel of Figure 27;
  • Figure 29 is an end view of the rotor standard magnetic steel of Figure 27;
  • Figure 30 is a cross-sectional view of the rotor standard magnet of Figure 27;
  • Figure 31 is a schematic structural view of the rotor keyway magnetic steel of Figure 27;
  • Figure 32 is an end elevational view of the rotor keyway magnetic steel of Figure 27;
  • Figure 33 is a layout view of the single row magnetic steel group of the rotor of Figure 27;
  • Figure 34 is a schematic view showing the assembly relationship of the main shaft, the stator and the rotor.
  • FIG. 1 is a schematic view showing the overall structure of a submersible permanent magnet synchronous motor of the present invention.
  • 2 is a second schematic view of the overall structure of the submersible permanent magnet synchronous motor of the present invention.
  • 3a is an enlarged view of the output end of the submersible permanent magnet synchronous motor of FIG. 1
  • FIG. 3b is an enlarged view of the tail end of the submersible permanent magnet synchronous motor of FIG. 2.
  • Figures 3a and 3b show the two ends of a submersible permanent magnet synchronous motor, respectively.
  • the present invention provides a submersible permanent magnet synchronous motor 1000.
  • the submersible permanent magnet synchronous motor is a componentized design, and two ends are respectively provided with coupling devices, and one end is an output end coupling head. It is convenient to connect with protectors, pumps, etc.; the other end is a tail end joint for easy connection with encoders, seals, controllers, etc.
  • the submersible permanent magnet synchronous motor of the invention is a one-piece housing, the stator and the rotor are respectively a multi-section new structure, and the rotor main shaft is a hollow shaft, the oil circulation can be realized in the motor cabin, and the electromagnetic scheme adopts the rotor 10 Pole and stator 12 slot solution.
  • the submersible permanent magnet synchronous motor of the invention improves the process scheme, thereby improving the reliability; optimizing the electromagnetic scheme, thereby improving the performance of the motor; designing the oil circulation structure, thereby solving the heat dissipation problem.
  • the submersible permanent magnet synchronous motor of the invention can realize low speed and large torque, so the effect of driving the pump under the well is reliable and stable, and is suitable for all the ranges of pumping oil through the electric pump in the downhole, and is particularly suitable for the screw pumping occasion.
  • Figure 4 is a general exploded view of the submersible permanent magnet synchronous motor of the present invention.
  • the submersible permanent magnet synchronous motor is composed of a housing assembly 100, a stator assembly 200, and a rotor assembly 300.
  • FIG. 5 is an exploded view of the composition of the housing assembly 100 of FIG. 4.
  • the housing assembly 100 is comprised of an output coupling head 110, a thrust bearing 120, a housing 130, and a tail end coupling 140.
  • the output coupling head 110 is used for connecting with mechanical components such as protectors, pumps, etc., connecting the submersible cable and injecting oil into the interior of the motor;
  • the thrust bearing 120 is used to withstand the axial force received by the motor;
  • the tail end coupling 140 is used for Install the encoder and connect the seal to the controller.
  • FIG. 6a is a structural diagram of the output end coupling head 110 of FIG. 5, and FIG. 6b is a second structural diagram of the output end coupling head 110 of FIG. Figures 6a, 6b show the ends of the output coupling head 110, respectively.
  • one end of the output end coupling head 110 is provided with a pipe thread 111 for convenient connection with the motor housing 130; and an oil injection hole 112 is provided in the middle of the output end coupling head 110 for facilitating oil injection into the motor interior. The oil flows through the circulation to the internal heat dissipation of the motor.
  • FIG. 6a is a structural diagram of the output end coupling head 110 of FIG. 5
  • FIG. 6b is a second structural diagram of the output end coupling head 110 of FIG. Figures 6a, 6b show the ends of the output coupling head 110, respectively.
  • one end of the output end coupling head 110 is provided with a pipe thread 111 for convenient connection with the motor housing 130; and an oil injection hole 112 is provided in the middle of the output end
  • the other end of the output end coupling head 110 is provided with a threaded hole combination for convenient connection with external components such as a protector and a pump, and is provided with a curved bevel 113 and a cable input interface 114 for connecting the submersible cable.
  • a threaded hole combination for convenient connection with external components such as a protector and a pump, and is provided with a curved bevel 113 and a cable input interface 114 for connecting the submersible cable.
  • Figure 7 is a cross-sectional view of the output coupling head 110 of Figure 5.
  • the output coupling head 110 is composed of a coupling screw hole 115, an output hole 116, a bearing mounting hole 117, a pin coupling hole 118, an axial through hole 119, a curved slope 113, a cable interface 114, a groove 109,
  • the pipe thread 111, the axial oil hole 108, and the radial oil hole 112 are formed.
  • the coupling screw hole 115 is evenly distributed on the circumference of the output end flange for connecting external components such as a protector and a pump; the output hole 116 is used for outputting the output end of the motor main shaft, and the space for the hole is provided for the purpose of mounting the bearing or the like;
  • the thrust bearing 120 is positioned and positioned; the pin coupling hole 118 is used to fix the thrust disk of the thrust bearing 120; the axial through hole 119 is used to pass through the motor output shaft; and the curved bevel 113 is used to leave an angular space for the input cable to enter the cable interface.
  • the cable interface 114 is used for accessing the submersible cable; the groove 109 is for mounting the O-ring for sealing; the pipe thread 111 is for sealing connection with the motor housing 130; the axial oil hole 108 is for the motor
  • the oil passage is used for conveying the oil entering the oil filling hole 112 to the inner cabin of the motor; the radial oil filling hole 112 is a motor oil filling port for filling the inner cabin of the motor.
  • FIG. 8 is a schematic structural view of the tail end coupling head 140 of FIG. 5. As shown in FIG. 8, one end of the tail end coupling head 140 is provided with a threaded hole combination for facilitating installation of an encoder or a connection controller; A pipe thread is provided at one end to facilitate connection with the motor housing 130.
  • FIG. 9 is a cross-sectional view of the tail end coupling head 140 of Figure 5.
  • the tail end coupling head 140 is composed of a tapered bore 141, a pipe thread 142, a groove 143, a threaded hole combination 144, and a tail hole 145.
  • the tapered hole 141 is used to leave the outlet space;
  • the pipe thread 142 is used for sealing connection with the motor housing 130;
  • the groove 3 is used for mounting the O-ring seal to seal;
  • the screw hole combination 144 is for mounting the encoder Coupling shell; tail hole 145 is used to pass through and extend out of the motor spindle tail end.
  • the submersible permanent magnet synchronous motor of the invention has a multi-section structure, and the silicon steel sheets are firstly superposed to form a single-section iron core, and then a plurality of single-core iron cores are connected to form a multi-section iron core assembly. Finally, a multi-section stator is formed by the coil windings.
  • the silicon steel sheet is a 12-slot structure with a winding groove, and constitutes a 12-slot scheme of the stator of the submersible permanent magnet synchronous motor of the present invention.
  • FIG. 10 is an exploded view of the composition of the stator assembly 200 of Figure 4.
  • the stator assembly 200 of the submersible permanent magnet synchronous motor is composed of circlips 201 and 209, compression rings 202 and 208, single cores 203 and 207, inter-section presses 204 and 206, and iron core combination.
  • the body 205 is composed to form a multi-section stator.
  • the retaining springs 201 and 209 are used to clamp the stator core to prevent axial sway; the compression rings 202 and 208 are used to clamp the multi-section iron core assembly; the single-section iron cores 203 and 207 are used to form the multi-section stator The iron core; the inter-section presses 204 and 206 are between the two single cores to protect the floating bearings inside.
  • FIG. 11 is a structural schematic view of the stator single cores 203, 207 of FIG. 10, and FIG. 12 is a structural view of the silicon steel sheets of the stator single core of FIG.
  • the silicon steel sheet of the stator single core 203 is composed of a stator slot 2031, a circular arc groove 2032, a winding slot 2033, and a housing coupling groove 2034, forming a slotted stator core, and a 12-slot structure.
  • the stator slot 2031 is used for mounting a winding coil, the number of which is determined by the electromagnetic scheme; the circular arc groove 2032 is used for passing through the cable; the winding slot 2033 is used for electromagnetic scheme adjustment and convenient winding process; and the housing coupling groove 2034 is used.
  • the stator core and the motor housing are connected by a keyway.
  • the submersible permanent magnet synchronous motor of the invention has a multi-section structure, and an output end bushing and a tail end bushing are respectively arranged on the output end and the tail end of the rotor for sealing.
  • firstly 10 magnetic steels are evenly arranged in the circumference to form a single row of magnetic steel groups.
  • several single-row magnetic steel groups are axially connected to form a single-row magnetic steel assembly.
  • each single-row magnetic steel The assembly is connected to the rotor magnet body by a floating bearing.
  • a single row of 10 magnetic steels constitutes a rotor 10 pole solution of the submersible permanent magnet synchronous motor of the present invention.
  • the rotor main shaft has a hollow shaft structure, and is uniformly provided with a radial oil passage hole, and the hollow shaft hole can flow through the oil to circulate, thereby functioning as a heat dissipation inside the motor.
  • Figure 13 is an exploded view of the structure of the rotor assembly 300 of Figure 4.
  • the rotor assembly 300 of the submersible permanent magnet synchronous motor is composed of a rotor output end bushing 301, a magnetic steel assembly 302, a rotor main shaft 303, and a rotor tail end bushing 304.
  • Figure 14 is a schematic view showing the main structure of the rotor of Figure 13, and Figure 15 is a partially enlarged view of the main structure of the rotor of Figure 14.
  • the rotor magnetic steel portion of the submersible permanent magnet synchronous motor of the present invention has a multi-section structure.
  • the magnetic steel distribution is formed by a multi-row magnetic steel group.
  • Figure 16 is an exploded view showing the composition of the sleeve of the rotor output end of Figure 13.
  • the rotor output end bushing is composed of an output end bushing 3011, an insulating sleeve 3012, a retaining spring 3013 and 3015, a retainer 3014, a bushing 3016, and a bushing 3017.
  • the output end sleeve 3011 is used for sealing;
  • the insulating sleeve 3012 is used for insulating the motor stator winding;
  • the circlips 3013 and 3015 are respectively used to prevent the insulating sleeve 3012 and the retainer 3014 from axially swaying;
  • the retainer 3014 is made of glass.
  • the tube is used to protect the output end sleeve 3011; the sleeve 3016 is for mating with the motor output shaft and the output end sleeve 3011;
  • the sleeve 3017 is for axial positioning
  • FIG. 17 is an overall structural view of the output end bushing 3011 of FIG. 16, and FIG. 18 is a cross-sectional view of the output end bushing 3011 of FIG.
  • the output end bushing 3011 is composed of an output hole 3011-1, an oil hole 3011-2, an intermediate hole 3011-3, a large hole 3011-4, and grooves 3011-5 and 3011-6.
  • the output hole 3011-1 is used for mating with the motor output end shaft;
  • the oil passage hole 3011-2 is used to constitute a motor oil internal circulation oil passage;
  • the intermediate hole 3011-3 and the large hole 3011-4 are for passing through the motor output shaft, and Through the oil;
  • the grooves 3011-5 and 3011-6 are used to mount the axial positioning circlip.
  • Figure 19 is an exploded view showing the composition of the rotor tail end bushing 304 of Figure 13; As shown in FIG. 19, the rotor tail end bushing is composed of circlips 3041 and 3043, retainer 3042, bushing 3044, insulating sleeve 3045, tail end bushing 3046, and bushing 3047.
  • the retaining springs 3041 and 3043 are respectively used for preventing the axial direction of the insulating sleeve 3045 and the retaining ring 3042; the retaining ring 3042 is used for protecting the tail end bushing; the bushing 3044 is for cooperating with the motor output shaft and the output end bushing 3011;
  • the insulating sleeve 3045 is used to insulate the motor stator windings; the tail end bushings 3046 are used for sealing; and the bushings 3047 are used for axial positioning.
  • Figure 20 is an overall structural view of the tail end bushing 3046 of Figure 19, and Figure 21 is a cross-sectional view of the tail end bushing 3046 of Figure 19.
  • the tail end bushing is composed of an output hole 3046-1, an oil hole 3046-2 and 3046-4, an intermediate hole 3046-3, an excessive hole 3046-5, a large hole 3046-6, and a groove 3046- 7 and 3046-8 constitute.
  • the output hole 3046-1 is used for outputting the hollow shaft of the motor tail end; the oil hole 3046-2, 3046-4 is used to constitute the internal oil circulation path of the motor oil; the intermediate hole 3046-3 is used for the shaft end shaft of the motor; 3046-5 is used for gaps between the motor tail end shaft and the tail end bushing 304; the large hole 6 is for mating with the sleeve 3046-4; the grooves 3046-7 and 3046-8 are for mounting the axial positioning card Spring.
  • FIG. 22 is a structural view of the rotor main shaft 303 of FIG. 13, and FIG. 23 is a second structural view of the rotor main shaft 303 of FIG. As shown in Figures 22 and 23, the rotor main shaft 303 is generally elongated.
  • Figure 24a is an enlarged view of the output end of the rotor main shaft 303 of Figure 22
  • Figure 24b is an enlarged view of the tail end of the rotor main shaft 303 of Figure 23
  • Figure 24c is an enlarged view of the middle portion of the rotor main shaft 303 of Figure 22.
  • the output end of the rotor main shaft 303 is a spline shaft
  • the tail end of the rotor main shaft 303 is a hollow shaft
  • the rotor main shaft 303 is provided with a mounting hole, respectively.
  • the elongated keyway is used for rotor assembly.
  • Figure 25 is a cross-sectional view of the rotor main shaft 303 of Figure 13 .
  • the rotor main shaft 303 is a hollow shaft, and the main shaft is radially evenly divided.
  • the cloth has oil holes for forming the internal oil circuit circulation of the motor.
  • Figure 26a is an enlarged view of the output of the rotor spindle 303 of Figure 25.
  • the rotor main shaft output end is composed of a spline groove 3031, a plug hole 3032, a groove 3033, a radial oil hole 3034, and a hollow shaft hole 3035.
  • the spline groove 3031 is used for the spline connection of the motor output shaft; the plug hole 3032 is for preventing impurities from entering the hollow shaft; the groove 3033 is for mounting the thrust bearing 120; the radial oil hole 3034 is for forming the internal oil circuit circulation of the motor;
  • the shaft hole 3035 is an internal oil circuit of the motor, and is used to constitute a heat dissipation of the internal oil circuit of the motor.
  • Figure 26b is an enlarged view of the tail end of the rotor main shaft 303 of Figure 25.
  • the rotor shaft 303 has a radial end oil hole 3036, a hollow shaft hole 3037, and encoder mounting holes 3038 and 3039.
  • the radial oil hole 3036 is used to constitute the internal oil circuit circulation of the motor;
  • the hollow shaft hole 3037 is used for injecting the motor oil to constitute the internal oil circuit circulation of the motor;
  • the encoder mounting holes 3038 and 3039 are used for mounting the encoder.
  • Figure 26c is an enlarged view of the middle section of the rotor main shaft 303 of Figure 25.
  • the intermediate section of the rotor main shaft 303 includes radial oil passages 30310 and 30312, and a hollow shaft hole 30311, which are commonly used for internal oil circulation, so that the rotor main shaft 303 dissipates heat.
  • Figure 27 is a structural exploded view of the rotor magnet assembly 302 of Figure 13;
  • the rotor magnet assembly 302 is composed of a snap spring 3021, end copper rings 3022, 3027, 30211 and 30216, axial compression rings 3023 and 30215, a single row of magnetic steel groups 3024 and 30214, and radial pressure.
  • the tight rings 3025 and 30213, the single-section magnetic steel body 3026, the gaskets 3028 and 3010, the floating bearing 3029, the multi-section magnetic steel body combination 30212, and the retaining ring 30217 are composed.
  • the circlip 3021, the end copper rings 3022 and 30216, the axial compression rings 3023 and 30215 belong to the rotor end assembly; the single row of magnetic steel groups 3024 and 30214, the radial compression rings 3025 and 30213, the single section magnetic steel
  • the body 3026 belongs to a single row of magnetic steel assemblies; the end copper rings 3027 and 30211, the gaskets 3028 and 30210, and the floating bearing 3029 are internode assemblies.
  • the retaining spring 3021 is used to prevent axial sway of the rotor assembly; the end copper rings 3022, 3027, 30211 and 30216 are used to fix the magnetic steel assembly 302 with magnetic isolation; the axial compression rings 3023 and 30215 are used for axial clamping Tight magnetic steel assembly 302; single row magnetic steel groups 3024 and 30214 are used to form a single magnetic steel body, thereby further forming a multi-section magnetic steel body combination; radial compression rings 3025 and 30213 are used for pressing and fixing the two circumferences Magnetic steel; single-section magnetic steel body 3026 is used to form a multi-section magnetic steel body combination; sealing gaskets 3028 and 30210 are used for sealing; floating bearing 3029 is used to support each single section of the rotor; and retaining ring 30217 is used to clamp the entire Rotor assembly.
  • two keyway magnetic steels are designed on the circumference of the single-row magnetic steel group, thereby preventing the magnetic steel from pulsing on the circumference;
  • the two ends of the magnetic steel are designed with a stepped structure in the axial direction, and the adjacent two single-row magnetic steel groups are arranged to form an annular groove formed in the magnetic steel step by the radial pressing ring, thereby preventing the magnetic steel from falling off in the radial direction.
  • an axial compression ring is provided to prevent the axial movement of the magnetic steel; in addition, installation between two adjacent single-section magnetic steel bodies
  • the floating bearing is such that the overall rotor magnet body has a certain flexibility to prevent damage due to too high rigidity.
  • FIG. 28 is a schematic structural view of the rotor standard magnetic steel of FIG. 27. As shown in Fig. 28, the rotor standard magnet steel 2000 has a tile shape overall, and the material is a permanent magnet.
  • Figure 29 is an end elevational view of the rotor standard magnet of Figure 27;
  • the rotor standard magnetic steel includes an outer surface 2001, a stepped surface 2002, and an inner surface 2003 as viewed from the end faces, and both are curved.
  • the outer surface 2001 is for forming a magnetic field air gap with the stator;
  • the step surface 2002 is for mounting a radial compression ring 30215 for clamping the magnetic steel;
  • the inner surface 2003 is for mating with the rotor main shaft 303.
  • Figure 30 is a cross-sectional view taken along the line A-A of the rotor standard magnetic steel of Figure 28. As shown in Fig. 30, the portion 2001, which is formed by the stepped surface, and the portion 2003 formed by the circular arc-shaped inner surface are seen from the axial cross section.
  • Figure 31 is a schematic view showing the structure of the rotor keyway magnetic steel of Figure 27; As shown in Fig. 31, the rotor keyway magnetic steel 3000 is provided with an elongated key groove 3100 in the axial direction of one side of the inner surface, and two key grooves are provided in each single row of magnetic steel rings constituting the rotor magnetic steel assembly 302. Magnetic steel to prevent the magnetic steel from tumbling on the circumference.
  • Figure 32 is an end elevational view of the rotor keyway magnet of Figure 27;
  • the rotor keyway magnetic steel 3000 includes an outer surface 3001, a stepped surface 3002, an inner surface 3003, and a keyway 3004.
  • the rotor keyway magnetic steel is set on the basis of the rotor standard magnetic steel.
  • the surface 3001 of the rotor keyway magnet, the stepped surface 3002, and the inner surface 3003 function the same as the rotor standard magnetic steel, and the keyway 3004 is used for positioning the magnetic steel on the circumference to prevent the magnetic steel from pulsing on the circumference.
  • Figure 33 is a layout view of the single row magnetic steel group of the rotor of Figure 27;
  • Figure 34 is a schematic view showing the assembly relationship of the main shaft, the stator and the rotor.
  • the single row magnetic steel group 3024 is evenly arranged on the outer circumference of the magnetic steel support 4000 by eight standard magnetic steels 2000 and two keyway magnetic steels 3000.
  • the two keyway magnetic steels are arranged opposite to each other by a key groove, and together with the grooves on the magnetic steel support member 4000 constitute a key groove, and are connected by a key 5000 to position and prevent the magnetic steel from pulsing on the circumference.
  • the magnetic steel support member 4000 is further connected to the rotor main shaft 303 through the key groove 5000, thereby constituting the entire rotor with the magnetic steel group, and the outer sleeve sets the single core 203 in the sub-assembly 200.
  • the present invention adopts a casing as an integral type, the stator and the rotor are multi-section type, and the rotor main shaft is a hollow shaft, and the method of injecting oil into the inner cabin of the motor overcomes the defects in the prior art, so that the submersible oil is forever
  • the magnetic synchronous motor optimizes the electromagnetic scheme, thereby improving the performance of the motor; improving the process scheme, thereby improving the reliability; designing the oil circulation structure to solve the heat dissipation problem.
  • the submersible permanent magnet synchronous motor adopts modular design of components to improve assembly process, simple structure and flexible design according to needs.
  • the submersible permanent magnet synchronous motor of the invention can realize low speed and large torque, so the effect of driving the pump under the well is reliable and stable, and is suitable for all the ranges of pumping oil through the electric pump in the downhole, and is particularly suitable for the pumping situation of the screw pump.

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Abstract

A submersible permanent magnet synchronous motor (1000) includes a motor casing, a stator and a rotor are correspondingly arranged in the motor casing, and two ends of the motor casing are respectively sealed and are connected to other external devices through connecting devices, such that an integrated-structure casing assembly (100) can be formed; the stator and the rotor are a stator assembly (200) and a rotor assembly (300) with multi-section type structures, respectively, the stator assembly (200) is fixed on the casing assembly (100), and the rotor assembly (300) is penetrated and arranged in the stator assembly (200); oil is injected into the casing assembly (100). By adopting the integrated-structure motor casing assembly, the stator assembly (200) and the rotor assembly (300) with multi-section type structures, the operation reliability and the performance of the motor are improved.

Description

潜油永磁同步电机Submersible permanent magnet synchronous motor 技术领域Technical field
本发明涉及一种潜油永磁同步电机，属于机械制造技术领域。The invention relates to a submersible permanent magnet synchronous motor, belonging to the technical field of mechanical manufacturing.
背景技术Background technique
目前我国和世界其他产油国家，油田上都广泛使用潜油电机来驱动潜油电泵来汲取原油。潜油电泵***是油田生产的重要设备，传统的潜油电泵***其动力源主要是异步电动机，现有的采油***在采油配套工艺中存在以下几个问题：At present, in China and other oil-producing countries in the world, submersible motors are widely used in oil fields to drive submersible electric pumps to extract crude oil. Submersible electric pump system is an important equipment for oil field production. The traditional submersible electric pump system is mainly driven by asynchronous motor. The existing oil production system has the following problems in the oil production supporting process:
一是异步电动机带离心泵配套时，因电机转速低于同步转速，电机效率和功率因数偏低；First, when the asynchronous motor is equipped with a centrifugal pump, the motor speed and power factor are low because the motor speed is lower than the synchronous speed;
二是异步电动机带螺杆泵配套时，因电机转速过高，很难经过减速器把速度降到螺杆泵使用需求范围，即使有使用的减速器，也大大提高了采油成本，同时也降低了采油效率，并且直接影响***的寿命；Second, when the asynchronous motor is equipped with a screw pump, because the motor speed is too high, it is difficult to reduce the speed to the screw pump demand range through the reducer. Even if the reducer is used, the oil recovery cost is greatly improved, and the oil recovery is also reduced. Efficiency and directly affect the life of the system;
三是异步电动机通常采用变频控制，地面的交流电远距离传输到井下时，能量损耗严重，大大减小了电机控制精度，从而也降低了***效率。Third, asynchronous motors usually use variable frequency control. When the ground AC power is transmitted to the well from a long distance, the energy loss is severe, which greatly reduces the motor control accuracy and thus reduces the system efficiency.
最近，潜油永磁同步电机以其高效节能得到了应用，根据作业需要通常置于井下，设备的四周都是高压的油水混合液体。Recently, submersible permanent magnet synchronous motors have been applied for their high efficiency and energy saving. They are usually placed under the well according to the operation requirements, and the equipment is surrounded by high-pressure oil-water mixed liquid.
现有潜油永磁同步电机的两端联接头一般不具有密封性；电机的定子和转子通常为单节结构，这种结构当要求电机功率大时，成本大大增加，由于潜油电机为细长结构，因此制造工艺性也会降低；现有电机几乎没有考虑散热问题，当要求电机通过大电流时，由于在井下电机所产生的热量无法及时散出，从而容易烧坏电机。The joint ends of the existing submersible permanent magnet synchronous motor generally do not have the sealing property; the stator and the rotor of the motor are usually a single-section structure. When the motor power is required to be large, the cost is greatly increased, because the submersible motor is fine. The long structure, so the manufacturing process will also be reduced; the existing motor almost does not consider the heat dissipation problem. When the motor is required to pass a large current, the heat generated in the downhole motor cannot be dissipated in time, so that the motor is easily burned out.
申请号为200910137764.4的专利公开了一种多节伺服潜油电机，该电机虽然转子和定子也是多节式结构，但电机壳体也为多节分段式，该电机虽然通过转子和定子采用多节式的方案一定程度上解决了提高电机功率等级的问题，但多节式的外壳大大增加了制造和组装工艺难度和成本。此外，更重要的是多节式的外壳也导致了对电机密封性的要求大大增加，使得整个电机的密封性变差。另外，该电机的相邻两节转子轴是通过联轴器联接，因此联轴器的寿命会直接影响可靠性。The application No. 200910137764.4 discloses a multi-section servo submersible motor which has a multi-section structure although the rotor and the stator are also multi-section, and the motor is adopted by the rotor and the stator. The multi-section solution solves the problem of increasing the power level of the motor to a certain extent, but the multi-section housing greatly increases the difficulty and cost of the manufacturing and assembly process. In addition, it is more important that the multi-section housing also results in a greatly increased requirement for motor tightness, which deteriorates the sealing of the entire motor. In addition, the adjacent two rotor shafts of the motor are coupled by a coupling, so the life of the coupling directly affects the reliability.
申请号为201010614682.7的专利公开了一种低速直驱永磁同步潜油电机，该电机为单节式电机，该电机采用转子14极、定子18槽方案，一定程度上解决了低速问题，但大扭矩输出问题并未能很好解决。该电机转子的极数和定子的槽数都偏大，会使得制造成本大大增加，同时从电机电磁方案的角度也并不是优化方案。并且，没有考虑井下密封问题和电机散热问题。The patent application No. 201010614682.7 discloses a low-speed direct-drive permanent magnet synchronous submersible motor, which is a single-section motor, which adopts a rotor 14-pole and stator 18-slot scheme, which solves the low-speed problem to a certain extent, but is large. The torque output problem is not well resolved. The number of poles of the rotor of the motor and the number of slots of the stator are both too large, which greatly increases the manufacturing cost, and is not an optimization scheme from the perspective of the electromagnetic scheme of the motor. Also, the problem of downhole sealing and heat dissipation of the motor are not considered.
发明内容Summary of the invention
本发明所要解决的技术问题在于针对现有技术的不足，提供一种潜油永磁同步电机，采用一体式结构的电机壳体组件，多节式结构的定子组合体和转子组合体，通过采用10极转子、12槽定子的设置，优化了电磁方案，从而提高了作业可靠性和电机性能；空心主轴使电机舱体内可实现油液循环，从而解决了散热问题；可实现低速大扭矩，适用于各种井下通过电泵抽油的工况。The technical problem to be solved by the present invention is to provide a submersible permanent magnet synchronous motor according to the deficiencies of the prior art, which adopts a motor housing assembly with a one-piece structure, a stator assembly and a rotor assembly of a multi-section structure, The 10-pole rotor and 12-slot stator are used to optimize the electromagnetic scheme, which improves the operation reliability and motor performance. The hollow spindle can realize the oil circulation in the motor compartment, thus solving the heat dissipation problem; low torque and high torque can be realized. It is suitable for various working conditions of pumping oil through electric pump.
本发明的所要解决的技术问题是通过如下技术方案实现的：The technical problem to be solved by the present invention is achieved by the following technical solutions:
一种潜油永磁同步电机，包括电机壳体，电机壳体内对应设置有定子和转子，所述电机壳体的两端分别密封并通过联接装置与其他外部装置相连接，构成一体式结构的壳体组件；所述定子和转子分别为多节式结构的定子组合体和转子组合体，所述定子组合体固定在壳体组件上，所述转子组合体穿设在定子组合体内部，所述定子组合体和转子组合体之间压紧定位；壳体组件内注入油液。A submersible permanent magnet synchronous motor includes a motor housing, and a stator and a rotor are disposed correspondingly in the motor housing, and two ends of the motor housing are respectively sealed and connected to other external devices through a coupling device to form an integral body. The housing assembly of the structure; the stator and the rotor are respectively a stator assembly and a rotor assembly of a multi-section structure, the stator assembly is fixed on the housing assembly, and the rotor assembly is disposed in the stator assembly Internally, the stator assembly and the rotor assembly are pressed and positioned; the casing assembly is filled with oil.
所述壳体组件包括壳体和分别设置在壳体两端的输出端联接头和尾部端联接头，所述输出连接头与壳体之间通过推力轴承相连；所述的输出端联接头用于与该潜油永磁同步电机外部的保护器、泵连接，接入潜油电缆，并向壳体内部注油；所述的尾部端联接头用于安装编码器，并与外部的密封装置和控制器连接。The housing assembly includes a housing and an output end coupling end and a tail end coupling head respectively disposed at two ends of the housing, wherein the output coupling head and the housing are connected by a thrust bearing; the output end coupling head is used for Connected to the external protector and pump of the submersible permanent magnet synchronous motor, accessing the submersible cable, and filling the interior of the housing; the tail end coupling is used for mounting the encoder, and external sealing device and control Connected.
所述定子组合体包括多个单节铁芯，相邻的两个单节铁芯之间通过节间压装彼此相连组成多节式定子铁芯，在所述多节式定子铁芯的两端由中心向两侧分别依次设置压紧环和卡簧，将多节式定子铁芯压紧定位。The stator assembly includes a plurality of single-section iron cores, and two adjacent single-core iron cores are connected to each other by inter-section press-fit to form a multi-section stator core, and two of the multi-section stator cores are The pressing ring and the circlip are respectively arranged from the center to the two sides, and the multi-section stator core is pressed and positioned.
所述转子组合体包括套设在转子主轴上的磁钢组合体，转子主轴的两端分别设有转子输出端轴套和转子尾部端轴套；所述的磁钢组合体为多节式结构，由多个单排磁钢组通过浮动轴承彼此连接而成，每一个单排磁钢组由10个磁钢均匀排列在圆周上构成。The rotor assembly includes a magnetic steel assembly sleeved on a main shaft of the rotor, and a rotor output end sleeve and a rotor tail end sleeve are respectively disposed at two ends of the rotor main shaft; the magnetic steel assembly is a multi-section structure It is formed by connecting a plurality of single-row magnetic steel groups through floating bearings, and each single-row magnetic steel group is formed by uniformly arranging 10 magnetic steels on the circumference.
所述单排磁钢组的10个磁钢中，包括8个标准磁钢和2个键槽磁钢；所述标准磁钢和键槽磁钢的两端分别在轴向上设有台阶，多个标准磁钢和键槽磁钢上的台阶组合成环形槽，相邻两个单排磁钢组之间的环形槽上设置径向压紧环；所述单排磁钢组的两端，还设有轴向压紧环。The ten magnetic steels of the single-row magnetic steel group include eight standard magnetic steels and two key magnetic steels; the two ends of the standard magnetic steel and the key magnetic steel are respectively provided with steps in the axial direction, and a plurality of The steps on the standard magnetic steel and the keyway magnetic steel are combined into an annular groove, and a radial compression ring is arranged on the annular groove between two adjacent single-row magnetic steel groups; the two ends of the single-row magnetic steel group are further provided There is an axial compression ring.
所述输出端联接头包括本体，所述本体的一端设有管螺纹，用于与所述壳体连接，本体的中部设有注油孔，本体的另一端设有用于连接的螺纹孔组合； The output end coupling head includes a body, and one end of the body is provided with a pipe thread for connecting with the casing, an oil injection hole is provided in a middle portion of the body, and a screw hole combination for connection is provided at the other end of the body;
所述本体的内部设有联接螺纹孔、输出孔、轴承安装孔、销联接孔、轴向通孔、弧形斜面、电缆接口、凹槽、管螺纹、轴向过油孔和径向注油孔；所述联接螺纹孔均匀分布在输出端法兰圆周；所述输出孔内设有输出电机主轴输出端；推力轴承在所述轴承安装孔中安装定位；所述推力轴承的推力盘在所述销联接孔中固定；电机输出轴穿设在所述轴向通孔内；输入电缆通过所述电缆接口经弧形斜面进入壳体；凹槽内设有O型密封圈；所述壳体通过管螺纹与输出端联接头密封连接；油液通过径向注油孔输送到电机内部并进入轴向过油孔。The inside of the body is provided with a coupling threaded hole, an output hole, a bearing mounting hole, a pin coupling hole, an axial through hole, a curved bevel, a cable interface, a groove, a pipe thread, an axial oil hole and a radial oil hole. The coupling threaded hole is evenly distributed on the circumference of the output end flange; the output hole is provided with an output shaft of the output motor; the thrust bearing is mounted and positioned in the bearing mounting hole; the thrust disk of the thrust bearing is in the Fixing in the pin coupling hole; the motor output shaft is disposed in the axial through hole; the input cable enters the casing through the cable interface through the curved bevel; the O-ring is disposed in the groove; the casing passes The pipe thread is sealed with the output end coupling; the oil is delivered to the inside of the motor through the radial oil hole and enters the axial oil hole.
所述的单节铁芯包括硅钢片，所述硅钢片上设有定子槽、圆弧凹槽、绕线开槽和壳体联接槽，形成12槽的开槽式定子铁芯结构；绕组线圈安装在定子槽上，电缆穿过圆弧凹槽，硅钢片通过壳体联接槽与定子铁芯和壳体连接。The single-section iron core comprises a silicon steel sheet, and the silicon steel sheet is provided with a stator slot, a circular arc groove, a winding slot and a housing coupling groove, forming a 12-slot slotted stator core structure; winding coil installation On the stator slot, the cable passes through the circular arc groove, and the silicon steel sheet is connected to the stator core and the casing through the housing coupling groove.
所述转子主轴为细长结构，包括输出端、中间段和尾部端；所述的输出端为花键轴；所述的中间段为空心轴，径向均匀分布有多个过油孔，还设有用于组装转子组合体的细长键槽；所述的尾部端为空心轴；所述的输出端上设有花键槽、塞孔、凹槽、径向过油孔和空心轴孔，所述花键槽与电机输出轴的花键连接；凹槽内安装推力轴承；所述的中间段上设有径向过油孔和空心轴孔；所述的尾部端上设有径向过油孔、空心轴孔和编码器安装孔。The rotor main shaft is an elongated structure including an output end, an intermediate section and a tail end; the output end is a spline shaft; the middle section is a hollow shaft, and a plurality of oil passage holes are evenly distributed in the radial direction. An elongated keyway for assembling the rotor assembly; the tail end is a hollow shaft; the output end is provided with a spline groove, a plug hole, a groove, a radial oil hole and a hollow shaft hole, The spline groove is connected with the spline of the motor output shaft; the thrust bearing is installed in the groove; the middle section is provided with a radial oil passage hole and a hollow shaft hole; the tail end is provided with a radial oil hole, Hollow shaft hole and encoder mounting hole.
所述的键槽磁钢为圆弧片状结构，包括弧形的外表面和内表面，在外表面的两侧边缘，延其轴向方向分别设有台阶面，在内表面的一侧边缘，延其径向方向设有用于使磁钢在圆周上定位的键槽。The keyway magnetic steel is an arc-shaped sheet-like structure, including an arc-shaped outer surface and an inner surface. On both side edges of the outer surface, a step surface is respectively arranged in the axial direction, and one side edge of the inner surface is extended. A keyway for positioning the magnetic steel on the circumference is provided in the radial direction.
综上所述，本发明提供一种潜油永磁同步电机，采用一体式结构的电机壳体组件，多节式结构的定子组合体和转子组合体，通过采用10极转子、12槽定子的设置，优化了电磁方案，从而提高了电机性能；转子主轴为空心轴，通过向电机内部舱体内注油的方式，实现电机舱体内的油液循环，从而解决了散热问题；该潜油永磁同步电机采用组件模块化设计，提高了组装工艺性，结构简单且可以根据需要灵活设计；此外，本发明的潜油永磁同步电机可实现低速大扭矩，因此井下带动泵的效果可靠稳定，适用于所有在井下通过电泵来抽油的范围，特别适用于螺杆泵抽油场合。In summary, the present invention provides a submersible permanent magnet synchronous motor, which adopts a motor housing assembly with a one-piece structure, a stator assembly and a rotor assembly of a multi-section structure, and adopts a 10-pole rotor and a 12-slot stator. The setting optimizes the electromagnetic scheme, thereby improving the performance of the motor; the rotor main shaft is a hollow shaft, and the oil circulation in the motor cabin is realized by filling the inner cabin of the motor, thereby solving the heat dissipation problem; Synchronous motor adopts modular design of components to improve assembly process, simple structure and flexible design according to needs. In addition, the submersible permanent magnet synchronous motor of the invention can realize low speed and large torque, so the effect of driving the pump downhole is reliable and stable, and is suitable for use. The range of pumping oil through all electric pumps in the underground is especially suitable for screw pumping.
下面结合附图和具体实施例，对本发明的技术方案进行详细地说明。The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
附图说明DRAWINGS
图1为本发明的潜油永磁同步电机整体结构图之一；1 is an overall structural diagram of a submersible permanent magnet synchronous motor of the present invention;
图2为本发明的潜油永磁同步电机整体结构图之二；2 is a second overall structural diagram of a submersible permanent magnet synchronous motor of the present invention;
图3a为图1中潜油永磁同步电机输出端的放大图；Figure 3a is an enlarged view of the output end of the submersible permanent magnet synchronous motor of Figure 1;
图3b为图2中潜油永磁同步电机尾部端的放大图；Figure 3b is an enlarged view of the tail end of the submersible permanent magnet synchronous motor of Figure 2;
图4为本发明中潜油永磁同步电机的总体***图；4 is an overall exploded view of a submersible permanent magnet synchronous motor of the present invention;
图5为图4中壳体组件的组成结构***图；Figure 5 is an exploded view of the structure of the housing assembly of Figure 4;
图6a为图5中输出端联接头的结构图之一；Figure 6a is a structural diagram of the output terminal of Figure 5;
图6b为图5中输出端联接头的结构图之二；Figure 6b is a second structural diagram of the output end connector of Figure 5;
图7为图5中输出端联接头的剖视图；Figure 7 is a cross-sectional view of the output end coupling of Figure 5;
图8为图5中尾部端联接头的结构示意图；Figure 8 is a schematic structural view of the tail end coupling head of Figure 5;
图9为图5中尾部端联接头的剖视图；Figure 9 is a cross-sectional view of the tail end coupling of Figure 5;
图10为图4中定子组合体的组成***图；Figure 10 is an exploded view of the composition of the stator assembly of Figure 4;
图11为图10中定子的单节铁芯结构示意图；Figure 11 is a schematic view showing the structure of a single core of the stator of Figure 10;
图12为图11中定子铁芯的硅钢片结构图；Figure 12 is a structural view of a silicon steel sheet of the stator core of Figure 11;
图13为图4中转子组合体的结构***图；Figure 13 is a structural exploded view of the rotor assembly of Figure 4;
图14为图13中转子的主要结构示意图；Figure 14 is a schematic view showing the main structure of the rotor of Figure 13;
图15为图14中转子的局部放大图；Figure 15 is a partial enlarged view of the rotor of Figure 14;
图16为图13中转子输出端轴套的组成***图；Figure 16 is an exploded view showing the composition of the sleeve of the rotor output end of Figure 13;
图17为图16中输出端轴套的整体结构图；Figure 17 is an overall structural view of the output end bushing of Figure 16;
图18为图16中输出端轴套的剖视图；Figure 18 is a cross-sectional view of the output end bushing of Figure 16;
图19为图13中转子尾部端轴套的组成***图；Figure 19 is an exploded view showing the composition of the sleeve end of the rotor tail portion of Figure 13;
图20为图19中尾部端轴套的整体结构图；Figure 20 is an overall structural view of the tail end bushing of Figure 19;
图21为图19中尾部端轴套的剖视图；Figure 21 is a cross-sectional view of the tail end bushing of Figure 19;
图22为图13中转子主轴的结构图之一；Figure 22 is a structural diagram of the rotor main shaft of Figure 13;
图23为图13中转子主轴的结构图之二；Figure 23 is a second structural view of the rotor main shaft of Figure 13;
图24a为图22中转子主轴的输出端放大图；Figure 24a is an enlarged view of the output end of the rotor main shaft of Figure 22;
图24b为图23中转子主轴的尾部端放大图；Figure 24b is an enlarged view of the tail end of the rotor main shaft of Figure 23;
图24c为图22中转子主轴的中间段放大图； Figure 24c is an enlarged view of the middle section of the rotor main shaft of Figure 22;
图25为图13中转子主轴的剖视图；Figure 25 is a cross-sectional view of the main shaft of the rotor of Figure 13;
图26a为图25中转子主轴的输出端放大图；Figure 26a is an enlarged view of the output end of the rotor main shaft of Figure 25;
图26b为图25中转子主轴的尾部端放大图；Figure 26b is an enlarged view of the tail end of the rotor main shaft of Figure 25;
图26c为图25中转子主轴的中间段放大图；Figure 26c is an enlarged view of the middle section of the rotor main shaft of Figure 25;
图27为图13中转子磁钢组合体的结构***图；Figure 27 is a structural exploded view of the rotor magnet assembly of Figure 13;
图28为图27中转子标准磁钢的结构示意图；Figure 28 is a schematic structural view of the rotor standard magnetic steel of Figure 27;
图29为图27中转子标准磁钢的端面图；Figure 29 is an end view of the rotor standard magnetic steel of Figure 27;
图30为图27中转子标准磁钢的剖视图；Figure 30 is a cross-sectional view of the rotor standard magnet of Figure 27;
图31为图27中转子键槽磁钢的结构示意图；Figure 31 is a schematic structural view of the rotor keyway magnetic steel of Figure 27;
图32为图27中转子键槽磁钢的端面图；Figure 32 is an end elevational view of the rotor keyway magnetic steel of Figure 27;
图33为图27中转子单排磁钢组排布图；Figure 33 is a layout view of the single row magnetic steel group of the rotor of Figure 27;
图34为主轴、定子和转子装配关系示意图。Figure 34 is a schematic view showing the assembly relationship of the main shaft, the stator and the rotor.
具体实施方式detailed description
图1为本发明的潜油永磁同步电机的整体结构示意图之一。图2为本发明的潜油永磁同步电机的整体结构示意图之二。图3a为图1中潜油永磁同步电机输出端的放大图，图3b为图2中潜油永磁同步电机尾部端的放大图。图3a、图3b分别示出了潜油永磁同步电机的两端。如图1至图3b所示，本发明提供一种潜油永磁同步电机1000，该潜油永磁同步电机为组件化设计，其两端分别设有联接装置，一端为输出端联接头，方便与保护器、泵等连接；另一端为尾部端联接头，方便与编码器、密封装置、控制器等连接。1 is a schematic view showing the overall structure of a submersible permanent magnet synchronous motor of the present invention. 2 is a second schematic view of the overall structure of the submersible permanent magnet synchronous motor of the present invention. 3a is an enlarged view of the output end of the submersible permanent magnet synchronous motor of FIG. 1, and FIG. 3b is an enlarged view of the tail end of the submersible permanent magnet synchronous motor of FIG. 2. Figures 3a and 3b show the two ends of a submersible permanent magnet synchronous motor, respectively. As shown in FIG. 1 to FIG. 3b, the present invention provides a submersible permanent magnet synchronous motor 1000. The submersible permanent magnet synchronous motor is a componentized design, and two ends are respectively provided with coupling devices, and one end is an output end coupling head. It is convenient to connect with protectors, pumps, etc.; the other end is a tail end joint for easy connection with encoders, seals, controllers, etc.
本发明中的潜油永磁同步电机是壳体为一体式，定子和转子分别为多节式的新型结构，并且转子主轴为空心轴，电机舱体内可实现油液循环，电磁方案采用转子10极、定子12槽方案。The submersible permanent magnet synchronous motor of the invention is a one-piece housing, the stator and the rotor are respectively a multi-section new structure, and the rotor main shaft is a hollow shaft, the oil circulation can be realized in the motor cabin, and the electromagnetic scheme adopts the rotor 10 Pole and stator 12 slot solution.
本发明中的潜油永磁同步电机改善了工艺方案，从而提高了可靠性；优化了电磁方案，从而提高了电机性能；设计了油液循环结构，从而解决了散热问题。The submersible permanent magnet synchronous motor of the invention improves the process scheme, thereby improving the reliability; optimizing the electromagnetic scheme, thereby improving the performance of the motor; designing the oil circulation structure, thereby solving the heat dissipation problem.
本发明的潜油永磁同步电机可实现低速大扭矩，因此井下带动泵的效果可靠稳定，适用于所有在井下通过电泵来抽油的范围，特别适用于螺杆泵抽油场合。The submersible permanent magnet synchronous motor of the invention can realize low speed and large torque, so the effect of driving the pump under the well is reliable and stable, and is suitable for all the ranges of pumping oil through the electric pump in the downhole, and is particularly suitable for the screw pumping occasion.
图4为本发明的潜油永磁同步电机的总体***图。如图4所示，潜油永磁同步电机由壳体组件100、定子组合体200、转子组合体300组成。Figure 4 is a general exploded view of the submersible permanent magnet synchronous motor of the present invention. As shown in FIG. 4, the submersible permanent magnet synchronous motor is composed of a housing assembly 100, a stator assembly 200, and a rotor assembly 300.
图5为图4中壳体组件100的组成结构***图。如图5所示，壳体组件100由输出端联接头110、推力轴承120、壳体130、尾部端联接头140组成。输出端联接头110用于与保护器、泵等机械部件连接，接入潜油电缆，并向电机内部注油；推力轴承120用于承受电机所受的轴向力；尾部端联接头140用于安装编码器，连接密封装置和控制器。FIG. 5 is an exploded view of the composition of the housing assembly 100 of FIG. 4. As shown in FIG. 5, the housing assembly 100 is comprised of an output coupling head 110, a thrust bearing 120, a housing 130, and a tail end coupling 140. The output coupling head 110 is used for connecting with mechanical components such as protectors, pumps, etc., connecting the submersible cable and injecting oil into the interior of the motor; the thrust bearing 120 is used to withstand the axial force received by the motor; the tail end coupling 140 is used for Install the encoder and connect the seal to the controller.
图6a为图5中输出端联接头110的结构图之一，图6b为图5中输出端联接头110的结构图之二。图6a、图6b分别示出了输出端联接头110的两端。如图6a所示，输出端联接头110的一端设有管螺纹111，方便与电机壳体130连接；又在输出端联接头110的中部设有注油孔112，便于向电机内部注油，而油液通过循环起到电机内部散热作用。如图6b所示，输出端联接头110的另一端设有螺纹孔组合，方便与保护器、泵等外部部件连接，同时设有弧形斜面113和电缆输入接口114，可将潜油电缆接入电机内部。6a is a structural diagram of the output end coupling head 110 of FIG. 5, and FIG. 6b is a second structural diagram of the output end coupling head 110 of FIG. Figures 6a, 6b show the ends of the output coupling head 110, respectively. As shown in FIG. 6a, one end of the output end coupling head 110 is provided with a pipe thread 111 for convenient connection with the motor housing 130; and an oil injection hole 112 is provided in the middle of the output end coupling head 110 for facilitating oil injection into the motor interior. The oil flows through the circulation to the internal heat dissipation of the motor. As shown in FIG. 6b, the other end of the output end coupling head 110 is provided with a threaded hole combination for convenient connection with external components such as a protector and a pump, and is provided with a curved bevel 113 and a cable input interface 114 for connecting the submersible cable. Inside the motor.
图7为图5中输出端联接头110的剖视图。如图7所示，输出端联接头110由联接螺纹孔115、输出孔116、轴承安装孔117、销联接孔118、轴向通孔119、弧形斜面113、电缆接口114、凹槽109、管螺纹111、轴向过油孔108、径向注油孔112构成。联接螺纹孔115均匀分布在输出端法兰圆周，用于连接保护器、泵等外部部件；输出孔116用于输出电机主轴输出端，为便于安装轴承等提供孔内空间；轴承安装孔117用于定位安装推力轴承120；销联接孔118用于固定推力轴承120的推力盘；轴向通孔119用于穿过电机输出轴；弧形斜面113用于为输入电缆进入电缆接口留出角度空间；电缆接口114用于接入潜油电缆；凹槽109用于安装O型密封圈，起到密封作用；管螺纹111用于与电机壳体130连接密封；轴向过油孔108为电机油路，用于将注油孔112进入的油液输送到电机内部舱体；径向注油孔112为电机注油口，用于向电机内部舱体注油。Figure 7 is a cross-sectional view of the output coupling head 110 of Figure 5. As shown in FIG. 7, the output coupling head 110 is composed of a coupling screw hole 115, an output hole 116, a bearing mounting hole 117, a pin coupling hole 118, an axial through hole 119, a curved slope 113, a cable interface 114, a groove 109, The pipe thread 111, the axial oil hole 108, and the radial oil hole 112 are formed. The coupling screw hole 115 is evenly distributed on the circumference of the output end flange for connecting external components such as a protector and a pump; the output hole 116 is used for outputting the output end of the motor main shaft, and the space for the hole is provided for the purpose of mounting the bearing or the like; The thrust bearing 120 is positioned and positioned; the pin coupling hole 118 is used to fix the thrust disk of the thrust bearing 120; the axial through hole 119 is used to pass through the motor output shaft; and the curved bevel 113 is used to leave an angular space for the input cable to enter the cable interface. The cable interface 114 is used for accessing the submersible cable; the groove 109 is for mounting the O-ring for sealing; the pipe thread 111 is for sealing connection with the motor housing 130; the axial oil hole 108 is for the motor The oil passage is used for conveying the oil entering the oil filling hole 112 to the inner cabin of the motor; the radial oil filling hole 112 is a motor oil filling port for filling the inner cabin of the motor.
图8为图5中尾部端联接头140的结构示意图，如图8所示，尾部端联接头140的一端设有螺纹孔组合，方便安装编码器或连接控制器；尾部端联接头140的另一端设有管螺纹，方便与电机壳体130连接。8 is a schematic structural view of the tail end coupling head 140 of FIG. 5. As shown in FIG. 8, one end of the tail end coupling head 140 is provided with a threaded hole combination for facilitating installation of an encoder or a connection controller; A pipe thread is provided at one end to facilitate connection with the motor housing 130.
图9为图5中尾部端联接头140的剖视图。如图9所示，尾部端联接头140由圆锥孔141、管螺纹142、凹槽143、螺纹孔组合144、尾部孔145构成。圆锥孔141用于留出出线空间；管螺纹142用于与电机壳体130连接密封；凹槽3用于安装O型密封圈起到密封作用；螺纹孔组合144用于安装编码器 联接壳；尾部孔145用于穿过并伸出电机主轴尾部端。Figure 9 is a cross-sectional view of the tail end coupling head 140 of Figure 5. As shown in FIG. 9, the tail end coupling head 140 is composed of a tapered bore 141, a pipe thread 142, a groove 143, a threaded hole combination 144, and a tail hole 145. The tapered hole 141 is used to leave the outlet space; the pipe thread 142 is used for sealing connection with the motor housing 130; the groove 3 is used for mounting the O-ring seal to seal; the screw hole combination 144 is for mounting the encoder Coupling shell; tail hole 145 is used to pass through and extend out of the motor spindle tail end.
本发明中的潜油永磁同步电机其定子是多节式结构，先由硅钢片有序叠加形成单节铁芯，再由若干个单节铁芯连接组合成多节式铁芯组合体，最后通过线圈绕组构成多节式定子。其中，硅钢片为设有绕线开槽的12个槽结构，构成本发明的潜油永磁同步电机定子的12槽方案。The submersible permanent magnet synchronous motor of the invention has a multi-section structure, and the silicon steel sheets are firstly superposed to form a single-section iron core, and then a plurality of single-core iron cores are connected to form a multi-section iron core assembly. Finally, a multi-section stator is formed by the coil windings. Among them, the silicon steel sheet is a 12-slot structure with a winding groove, and constitutes a 12-slot scheme of the stator of the submersible permanent magnet synchronous motor of the present invention.
图10为图4中定子组合体200的组成***图。如图10所示，潜油永磁同步电机的定子组合体200由卡簧201和209、压紧环202和208、单节铁芯203和207、节间压装204和206、铁芯组合体205组成，构成多节式定子。卡簧201和209用于卡紧定子铁芯，防止轴向窜动；压紧环202和208用于夹紧多节铁芯组合体；单节铁芯203和207用于构成多节式定子铁芯；节间压装204和206在两个单节铁芯之间，保护里面的浮动轴承。Figure 10 is an exploded view of the composition of the stator assembly 200 of Figure 4. As shown in FIG. 10, the stator assembly 200 of the submersible permanent magnet synchronous motor is composed of circlips 201 and 209, compression rings 202 and 208, single cores 203 and 207, inter-section presses 204 and 206, and iron core combination. The body 205 is composed to form a multi-section stator. The retaining springs 201 and 209 are used to clamp the stator core to prevent axial sway; the compression rings 202 and 208 are used to clamp the multi-section iron core assembly; the single- section iron cores 203 and 207 are used to form the multi-section stator The iron core; the inter-section presses 204 and 206 are between the two single cores to protect the floating bearings inside.
图11为图10中定子单节铁芯203、207的结构示意图，图12为图11中定子单节铁芯的硅钢片结构图。如图12所示，定子单节铁芯203的硅钢片由定子槽2031、圆弧凹槽2032、绕线开槽2033、壳体联接槽2034构成，形成开槽式定子铁芯，12槽结构。定子槽2031用于安装绕组线圈，其个数决定于电磁方案；圆弧凹槽2032用于穿过电缆；绕线开槽2033用于电磁方案调节和方便绕线工艺；壳体联接槽2034用于通过键槽连接定子铁芯与电机壳体。11 is a structural schematic view of the stator single cores 203, 207 of FIG. 10, and FIG. 12 is a structural view of the silicon steel sheets of the stator single core of FIG. As shown in FIG. 12, the silicon steel sheet of the stator single core 203 is composed of a stator slot 2031, a circular arc groove 2032, a winding slot 2033, and a housing coupling groove 2034, forming a slotted stator core, and a 12-slot structure. . The stator slot 2031 is used for mounting a winding coil, the number of which is determined by the electromagnetic scheme; the circular arc groove 2032 is used for passing through the cable; the winding slot 2033 is used for electromagnetic scheme adjustment and convenient winding process; and the housing coupling groove 2034 is used. The stator core and the motor housing are connected by a keyway.
本发明中的潜油永磁同步电机其转子是多节式结构，在转子的输出端和尾部端上分别设有输出端轴套和尾部端轴套，用于密封。中间段中，首先由10个磁钢均匀排列在圆周，形成单排磁钢组，然后，若干个单排磁钢组轴向连接构成单排磁钢组合体，最后，每个单排磁钢组合体之间通过浮动轴承连接为转子磁钢体。其中，单排10个磁钢构成本发明中潜油永磁同步电机的转子10极方案。另外，转子主轴为空心轴结构，并均匀设有径向过油孔，空心轴孔可流过油液进行循环，起到电机内部散热作用。The submersible permanent magnet synchronous motor of the invention has a multi-section structure, and an output end bushing and a tail end bushing are respectively arranged on the output end and the tail end of the rotor for sealing. In the middle section, firstly 10 magnetic steels are evenly arranged in the circumference to form a single row of magnetic steel groups. Then, several single-row magnetic steel groups are axially connected to form a single-row magnetic steel assembly. Finally, each single-row magnetic steel The assembly is connected to the rotor magnet body by a floating bearing. Among them, a single row of 10 magnetic steels constitutes a rotor 10 pole solution of the submersible permanent magnet synchronous motor of the present invention. In addition, the rotor main shaft has a hollow shaft structure, and is uniformly provided with a radial oil passage hole, and the hollow shaft hole can flow through the oil to circulate, thereby functioning as a heat dissipation inside the motor.
图13为图4中转子组合体300的结构***图。如图13所示，潜油永磁同步电机的转子组合体300由转子输出端轴套301、磁钢组合体302、转子主轴303、转子尾部端轴套304组成。Figure 13 is an exploded view of the structure of the rotor assembly 300 of Figure 4. As shown in FIG. 13, the rotor assembly 300 of the submersible permanent magnet synchronous motor is composed of a rotor output end bushing 301, a magnetic steel assembly 302, a rotor main shaft 303, and a rotor tail end bushing 304.
图14为图13中转子的主要结构示意图，图15为图14中转子主要结构的局部放大图。如图14所示，本发明的潜油永磁同步电机转子磁钢部分为多节式结构。如图15所示，单排磁钢组合中，磁钢分布由多排式磁钢组环绕而成。Figure 14 is a schematic view showing the main structure of the rotor of Figure 13, and Figure 15 is a partially enlarged view of the main structure of the rotor of Figure 14. As shown in FIG. 14, the rotor magnetic steel portion of the submersible permanent magnet synchronous motor of the present invention has a multi-section structure. As shown in Fig. 15, in the single row magnetic steel combination, the magnetic steel distribution is formed by a multi-row magnetic steel group.
图16为图13中转子输出端轴套的组成***图。如图16所示，转子输出端轴套由输出端轴套3011、绝缘套管3012、卡簧3013和3015、护圈3014、轴套3016、轴套3017组成。输出端轴套3011用于密封；绝缘套管3012用于与电机定子绕组出线绝缘；卡簧3013和3015分别用于防止绝缘套管3012和护圈3014轴向窜动；护圈3014材料为玻璃布管，用于保护输出端轴套3011；轴套3016用于与电机输出轴和输出端轴套3011配合；轴套3017用于轴向定位。Figure 16 is an exploded view showing the composition of the sleeve of the rotor output end of Figure 13. As shown in FIG. 16, the rotor output end bushing is composed of an output end bushing 3011, an insulating sleeve 3012, a retaining spring 3013 and 3015, a retainer 3014, a bushing 3016, and a bushing 3017. The output end sleeve 3011 is used for sealing; the insulating sleeve 3012 is used for insulating the motor stator winding; the circlips 3013 and 3015 are respectively used to prevent the insulating sleeve 3012 and the retainer 3014 from axially swaying; the retainer 3014 is made of glass. The tube is used to protect the output end sleeve 3011; the sleeve 3016 is for mating with the motor output shaft and the output end sleeve 3011; the sleeve 3017 is for axial positioning.
图17为图16中输出端轴套3011的整体结构图，图18为图16中输出端轴套3011的剖视图。如图18所示，输出端轴套3011由输出孔3011-1、过油孔3011-2、中间孔3011-3、大孔3011-4、凹槽3011-5和3011-6构成。输出孔3011-1用于与电机输出端轴配合；过油孔3011-2用于构成电机油内部循环油路；中间孔3011-3和大孔3011-4用于穿过电机输出轴，并通过油液；凹槽3011-5和3011-6用于安装轴向定位卡簧。17 is an overall structural view of the output end bushing 3011 of FIG. 16, and FIG. 18 is a cross-sectional view of the output end bushing 3011 of FIG. As shown in Fig. 18, the output end bushing 3011 is composed of an output hole 3011-1, an oil hole 3011-2, an intermediate hole 3011-3, a large hole 3011-4, and grooves 3011-5 and 3011-6. The output hole 3011-1 is used for mating with the motor output end shaft; the oil passage hole 3011-2 is used to constitute a motor oil internal circulation oil passage; the intermediate hole 3011-3 and the large hole 3011-4 are for passing through the motor output shaft, and Through the oil; the grooves 3011-5 and 3011-6 are used to mount the axial positioning circlip.
图19为图13中转子尾部端轴套304的组成***图。如图19所示，转子尾部端轴套由卡簧3041和3043、护圈3042、轴套3044、绝缘套管3045、尾部端轴套3046、轴套3047组成。卡簧3041和3043分别用于防止绝缘套管3045和护圈3042轴向窜动；护圈3042用于保护尾部端轴套；轴套3044用于与电机输出轴和输出端轴套3011配合；绝缘套管3045用于与电机定子绕组出线绝缘；尾部端轴套3046用于密封；轴套3047用于轴向定位。Figure 19 is an exploded view showing the composition of the rotor tail end bushing 304 of Figure 13; As shown in FIG. 19, the rotor tail end bushing is composed of circlips 3041 and 3043, retainer 3042, bushing 3044, insulating sleeve 3045, tail end bushing 3046, and bushing 3047. The retaining springs 3041 and 3043 are respectively used for preventing the axial direction of the insulating sleeve 3045 and the retaining ring 3042; the retaining ring 3042 is used for protecting the tail end bushing; the bushing 3044 is for cooperating with the motor output shaft and the output end bushing 3011; The insulating sleeve 3045 is used to insulate the motor stator windings; the tail end bushings 3046 are used for sealing; and the bushings 3047 are used for axial positioning.
图20为图19中尾部端轴套3046的整体结构图，图21为图19中尾部端轴套3046的剖视图。如图21所示，尾部端轴套由输出孔3046-1、过油孔3046-2和3046-4、中间孔3046-3、过度孔3046-5、大孔3046-6、凹槽3046-7和3046-8构成。输出孔3046-1用于输出电机尾部端空心轴；过油孔3046-2、3046-4用于构成电机油内部循环油路；中间孔3046-3用于与电机尾部端轴配合；过度孔3046-5用于电机尾部端轴与尾部端轴套304之间留有间隙；大孔6用于与轴套3046-4配合；凹槽3046-7和3046-8用于安装轴向定位卡簧。Figure 20 is an overall structural view of the tail end bushing 3046 of Figure 19, and Figure 21 is a cross-sectional view of the tail end bushing 3046 of Figure 19. As shown in FIG. 21, the tail end bushing is composed of an output hole 3046-1, an oil hole 3046-2 and 3046-4, an intermediate hole 3046-3, an excessive hole 3046-5, a large hole 3046-6, and a groove 3046- 7 and 3046-8 constitute. The output hole 3046-1 is used for outputting the hollow shaft of the motor tail end; the oil hole 3046-2, 3046-4 is used to constitute the internal oil circulation path of the motor oil; the intermediate hole 3046-3 is used for the shaft end shaft of the motor; 3046-5 is used for gaps between the motor tail end shaft and the tail end bushing 304; the large hole 6 is for mating with the sleeve 3046-4; the grooves 3046-7 and 3046-8 are for mounting the axial positioning card Spring.
图22为图13中转子主轴303的结构图之一，图23为图13中转子主轴303的结构图之二。如图22和图23所示，转子主轴303总体上呈细长结构。22 is a structural view of the rotor main shaft 303 of FIG. 13, and FIG. 23 is a second structural view of the rotor main shaft 303 of FIG. As shown in Figures 22 and 23, the rotor main shaft 303 is generally elongated.
图24a为图22中转子主轴303的输出端放大图，图24b为图23中转子主轴303的尾部端放大图，图24c为图22中转子主轴303的中间段放大图。如图24a所示，转子主轴303的输出端为花键轴；如图24b所示，转子主轴303的尾部端为空心轴；如图24c所示，转子主轴303上分别设有安装小孔用于过油液，细长键槽用于转子组装。Figure 24a is an enlarged view of the output end of the rotor main shaft 303 of Figure 22, Figure 24b is an enlarged view of the tail end of the rotor main shaft 303 of Figure 23, and Figure 24c is an enlarged view of the middle portion of the rotor main shaft 303 of Figure 22. As shown in Fig. 24a, the output end of the rotor main shaft 303 is a spline shaft; as shown in Fig. 24b, the tail end of the rotor main shaft 303 is a hollow shaft; as shown in Fig. 24c, the rotor main shaft 303 is provided with a mounting hole, respectively. In the case of oil, the elongated keyway is used for rotor assembly.
图25为图13中转子主轴303的剖视图。如图25所示，转子主轴303为空心轴，主轴径向均匀分 布有过油孔，用于构成电机内部油路循环。Figure 25 is a cross-sectional view of the rotor main shaft 303 of Figure 13 . As shown in Fig. 25, the rotor main shaft 303 is a hollow shaft, and the main shaft is radially evenly divided. The cloth has oil holes for forming the internal oil circuit circulation of the motor.
图26a为图25中转子主轴303的输出端放大图。如图26a所示，转子主轴输出端由花键槽3031、塞孔3032、凹槽3033、径向过油孔3034、空心轴孔3035构成。花键槽3031用于电机输出轴的花键连接；塞孔3032用于防止杂质进入空心轴；凹槽3033用于安装推力轴承120；径向过油孔3034用于构成电机内部油路循环；空心轴孔3035为电机内部油路，用于构成电机内部油路循环起散热作用。Figure 26a is an enlarged view of the output of the rotor spindle 303 of Figure 25. As shown in Fig. 26a, the rotor main shaft output end is composed of a spline groove 3031, a plug hole 3032, a groove 3033, a radial oil hole 3034, and a hollow shaft hole 3035. The spline groove 3031 is used for the spline connection of the motor output shaft; the plug hole 3032 is for preventing impurities from entering the hollow shaft; the groove 3033 is for mounting the thrust bearing 120; the radial oil hole 3034 is for forming the internal oil circuit circulation of the motor; The shaft hole 3035 is an internal oil circuit of the motor, and is used to constitute a heat dissipation of the internal oil circuit of the motor.
图26b为图25中转子主轴303的尾部端放大图。如图26b所示，转子主轴303尾部端由径向过油孔3036、空心轴孔3037、编码器安装孔3038和3039。径向过油孔3036用于构成电机内部油路循环；空心轴孔3037用于注入电机油构成电机内部油路循环；编码器安装孔3038和3039用于安装编码器。Figure 26b is an enlarged view of the tail end of the rotor main shaft 303 of Figure 25. As shown in Fig. 26b, the rotor shaft 303 has a radial end oil hole 3036, a hollow shaft hole 3037, and encoder mounting holes 3038 and 3039. The radial oil hole 3036 is used to constitute the internal oil circuit circulation of the motor; the hollow shaft hole 3037 is used for injecting the motor oil to constitute the internal oil circuit circulation of the motor; the encoder mounting holes 3038 and 3039 are used for mounting the encoder.
图26c为图25中转子主轴303的中间段放大图。如图26c所示，转子主轴303中间段包括径向过油孔30310和30312、空心轴孔30311，共同用于内部油液循环，使得转子主轴303散热。Figure 26c is an enlarged view of the middle section of the rotor main shaft 303 of Figure 25. As shown in Fig. 26c, the intermediate section of the rotor main shaft 303 includes radial oil passages 30310 and 30312, and a hollow shaft hole 30311, which are commonly used for internal oil circulation, so that the rotor main shaft 303 dissipates heat.
图27为图13中转子磁钢组合体302的结构***图。如图27所示，转子磁钢组合体302由卡簧3021、端部铜环3022、3027、30211和30216、轴向压紧环3023和30215、单排磁钢组3024和30214、径向压紧环3025和30213、单节磁钢体3026、密封垫片3028和30210、浮动轴承3029、多节磁钢体组合30212、挡圈30217组成。其中，卡簧3021、端部铜环3022和30216、轴向压紧环3023和30215属于转子端部组件；单排磁钢组3024和30214、径向压紧环3025和30213、单节磁钢体3026属于单排磁钢组件；端部铜环3027和30211、密封垫片3028和30210、浮动轴承3029属于节间组件。卡簧3021用于防止转子组装的轴向窜动；端部铜环3022、3027、30211和30216用于固定磁钢组合体302与磁隔离；轴向压紧环3023和30215用于轴向夹紧磁钢组合体302；单排磁钢组3024和30214用于构成单节磁钢体，从而进一步构成多节磁钢体组合；径向压紧环3025和30213用于压紧固定相连两圆周磁钢；单节磁钢体3026用于构成多节磁钢体组合；密封垫片3028和30210用于密封；浮动轴承3029用于支撑转子的每个单节；挡圈30217用于夹紧整个转子组装。Figure 27 is a structural exploded view of the rotor magnet assembly 302 of Figure 13; As shown in Fig. 27, the rotor magnet assembly 302 is composed of a snap spring 3021, end copper rings 3022, 3027, 30211 and 30216, axial compression rings 3023 and 30215, a single row of magnetic steel groups 3024 and 30214, and radial pressure. The tight rings 3025 and 30213, the single-section magnetic steel body 3026, the gaskets 3028 and 3010, the floating bearing 3029, the multi-section magnetic steel body combination 30212, and the retaining ring 30217 are composed. Wherein, the circlip 3021, the end copper rings 3022 and 30216, the axial compression rings 3023 and 30215 belong to the rotor end assembly; the single row of magnetic steel groups 3024 and 30214, the radial compression rings 3025 and 30213, the single section magnetic steel The body 3026 belongs to a single row of magnetic steel assemblies; the end copper rings 3027 and 30211, the gaskets 3028 and 30210, and the floating bearing 3029 are internode assemblies. The retaining spring 3021 is used to prevent axial sway of the rotor assembly; the end copper rings 3022, 3027, 30211 and 30216 are used to fix the magnetic steel assembly 302 with magnetic isolation; the axial compression rings 3023 and 30215 are used for axial clamping Tight magnetic steel assembly 302; single row magnetic steel groups 3024 and 30214 are used to form a single magnetic steel body, thereby further forming a multi-section magnetic steel body combination; radial compression rings 3025 and 30213 are used for pressing and fixing the two circumferences Magnetic steel; single-section magnetic steel body 3026 is used to form a multi-section magnetic steel body combination; sealing gaskets 3028 and 30210 are used for sealing; floating bearing 3029 is used to support each single section of the rotor; and retaining ring 30217 is used to clamp the entire Rotor assembly.
本发明的潜油永磁同步电机的转子磁钢的安装方式上，在单排磁钢组的圆周上，设计了两个键槽磁钢，从而防止磁钢在圆周上的窜动；又通过每个磁钢的两端在轴向上设计了台阶结构，相邻两单排磁钢组之间通过安装径向压紧环在磁钢台阶形成的环形槽，从而防止磁钢在径向上的脱落；在每单排磁钢组合体的两端，又设置了轴向压紧环，从而防止了磁钢在轴向上的窜动；另外，在两个相邻单节磁钢体之间安装了浮动轴承，从而使整体转子磁钢体具有一定的柔性，防止因刚性太高而容易损坏。In the installation method of the rotor magnetic steel of the submerged-oil permanent magnet synchronous motor of the present invention, two keyway magnetic steels are designed on the circumference of the single-row magnetic steel group, thereby preventing the magnetic steel from pulsing on the circumference; The two ends of the magnetic steel are designed with a stepped structure in the axial direction, and the adjacent two single-row magnetic steel groups are arranged to form an annular groove formed in the magnetic steel step by the radial pressing ring, thereby preventing the magnetic steel from falling off in the radial direction. At both ends of each single row of magnetic steel assembly, an axial compression ring is provided to prevent the axial movement of the magnetic steel; in addition, installation between two adjacent single-section magnetic steel bodies The floating bearing is such that the overall rotor magnet body has a certain flexibility to prevent damage due to too high rigidity.
图28为图27中转子标准磁钢的结构示意图。如图28所示，转子标准磁钢2000总体结构上呈瓦形形状，材料为永磁体。28 is a schematic structural view of the rotor standard magnetic steel of FIG. 27. As shown in Fig. 28, the rotor standard magnet steel 2000 has a tile shape overall, and the material is a permanent magnet.
图29为图27中转子标准磁钢的端面图。如图29所示，从端面上看，转子标准磁钢包括外表面2001、台阶面2002、内表面2003构成，且都呈弧形。外表面2001用于与定子形成磁场气隙；台阶面2002用于安装夹紧磁钢的径向压紧环30215；内表面2003用于与转子主轴303配合固定。Figure 29 is an end elevational view of the rotor standard magnet of Figure 27; As shown in Fig. 29, the rotor standard magnetic steel includes an outer surface 2001, a stepped surface 2002, and an inner surface 2003 as viewed from the end faces, and both are curved. The outer surface 2001 is for forming a magnetic field air gap with the stator; the step surface 2002 is for mounting a radial compression ring 30215 for clamping the magnetic steel; and the inner surface 2003 is for mating with the rotor main shaft 303.
图30为图28中转子标准磁钢的A-A面剖视图。如图30所示，从轴向断面上看，包括台阶面所形成的部分2001、2002和圆弧形内表面所形成的部分2003。Figure 30 is a cross-sectional view taken along the line A-A of the rotor standard magnetic steel of Figure 28. As shown in Fig. 30, the portion 2001, which is formed by the stepped surface, and the portion 2003 formed by the circular arc-shaped inner surface are seen from the axial cross section.
图31为图27中转子键槽磁钢的结构示意图。如图31所示，转子键槽磁钢3000在内表面一侧的轴向上设有细长键槽3100，在组成转子磁钢组合体302的每一个单排磁钢环中都设有两个键槽磁钢，从而防止磁钢在圆周上的窜动。Figure 31 is a schematic view showing the structure of the rotor keyway magnetic steel of Figure 27; As shown in Fig. 31, the rotor keyway magnetic steel 3000 is provided with an elongated key groove 3100 in the axial direction of one side of the inner surface, and two key grooves are provided in each single row of magnetic steel rings constituting the rotor magnetic steel assembly 302. Magnetic steel to prevent the magnetic steel from tumbling on the circumference.
图32为图27中转子键槽磁钢的端面图。如图32所示，从端面上看，转子键槽磁钢3000包括外表面3001、台阶面3002、内表面3003构成、键槽3004，实际上转子键槽磁钢是在转子标准磁钢的基础上多设置了键槽。转子键槽磁钢的表面3001、台阶面3002、内表面3003的作用与转子标准磁钢相同，而键槽3004用于磁钢在圆周上的定位，防止磁钢在圆周上的窜动。Figure 32 is an end elevational view of the rotor keyway magnet of Figure 27; As shown in FIG. 32, the rotor keyway magnetic steel 3000 includes an outer surface 3001, a stepped surface 3002, an inner surface 3003, and a keyway 3004. In fact, the rotor keyway magnetic steel is set on the basis of the rotor standard magnetic steel. The keyway. The surface 3001 of the rotor keyway magnet, the stepped surface 3002, and the inner surface 3003 function the same as the rotor standard magnetic steel, and the keyway 3004 is used for positioning the magnetic steel on the circumference to prevent the magnetic steel from pulsing on the circumference.
图33为图27中转子单排磁钢组的排布图。图34为主轴、定子和转子装配关系示意图。如图33和图34所示，单排磁钢组3024由8个标准磁钢2000和2个键槽磁钢3000均匀排布在磁钢支撑件4000的外表面圆周上。2个键槽磁钢以键槽相对排布，与磁钢支撑件4000上的槽共同构成键槽，通过键5000连接进行定位并防止磁钢在圆周上的窜动。磁钢支撑件4000又通过键槽5000与转子主轴303连接，从而构成带有磁钢组的转子整体，其外部套设定子组合体200中的单节铁芯203。Figure 33 is a layout view of the single row magnetic steel group of the rotor of Figure 27; Figure 34 is a schematic view showing the assembly relationship of the main shaft, the stator and the rotor. As shown in FIGS. 33 and 34, the single row magnetic steel group 3024 is evenly arranged on the outer circumference of the magnetic steel support 4000 by eight standard magnetic steels 2000 and two keyway magnetic steels 3000. The two keyway magnetic steels are arranged opposite to each other by a key groove, and together with the grooves on the magnetic steel support member 4000 constitute a key groove, and are connected by a key 5000 to position and prevent the magnetic steel from pulsing on the circumference. The magnetic steel support member 4000 is further connected to the rotor main shaft 303 through the key groove 5000, thereby constituting the entire rotor with the magnetic steel group, and the outer sleeve sets the single core 203 in the sub-assembly 200.
由上述内容可知，本发明采用壳体为一体式，定子、转子为多节式，转子主轴为空心轴，向电机内部舱体内注油的方式，克服了现有技术中的缺陷，使得潜油永磁同步电机优化了电磁方案，从而提高了电机性能；改善了工艺方案，从而提高了可靠性；设计了油液循环结构，从而解决了散热问题。该潜油永磁同步电机采用组件模块化设计，提高了组装工艺性，结构简单且可以根据需要灵活设计。此外，本发明的潜油永磁同步电机可实现低速大扭矩，因此井下带动泵的效果可靠稳定，适用于所有在井下通过电泵来抽油的范围，特别适用于螺杆泵抽油场合。 It can be seen from the above that the present invention adopts a casing as an integral type, the stator and the rotor are multi-section type, and the rotor main shaft is a hollow shaft, and the method of injecting oil into the inner cabin of the motor overcomes the defects in the prior art, so that the submersible oil is forever The magnetic synchronous motor optimizes the electromagnetic scheme, thereby improving the performance of the motor; improving the process scheme, thereby improving the reliability; designing the oil circulation structure to solve the heat dissipation problem. The submersible permanent magnet synchronous motor adopts modular design of components to improve assembly process, simple structure and flexible design according to needs. In addition, the submersible permanent magnet synchronous motor of the invention can realize low speed and large torque, so the effect of driving the pump under the well is reliable and stable, and is suitable for all the ranges of pumping oil through the electric pump in the downhole, and is particularly suitable for the pumping situation of the screw pump.

Claims (9)

  1. 一种潜油永磁同步电机，包括电机壳体，电机壳体内对应设置有定子和转子，其特征在于，所述电机壳体的两端分别密封并通过联接装置与其他外部装置相连接，构成一体式结构的壳体组件；所述定子和转子分别为多节式结构的定子组合体和转子组合体，所述定子组合体固定在壳体组件上，所述转子组合体穿设在定子组合体内部，所述定子组合体和转子组合体之间压紧定位；壳体组件内注入油液。A submersible permanent magnet synchronous motor includes a motor housing, and a stator and a rotor are disposed in the motor housing, wherein the two ends of the motor housing are respectively sealed and connected to other external devices through a coupling device. Connecting, forming a housing assembly of a one-piece structure; the stator and the rotor are respectively a stator assembly and a rotor assembly of a multi-section structure, the stator assembly is fixed on the housing assembly, and the rotor assembly is pierced Inside the stator assembly, the stator assembly and the rotor assembly are pressed and positioned; oil is injected into the housing assembly.
  2. 如权利要求1所述的潜油永磁同步电机，其特征在于，所述壳体组件包括壳体和分别设置在壳体两端的输出端联接头和尾部端联接头，所述输出连接头与壳体之间通过推力轴承相连；所述的输出端联接头用于与该潜油永磁同步电机外部的保护器、泵连接，接入潜油电缆，并向壳体内部注油；所述的尾部端联接头用于安装编码器，并与外部的密封装置和控制器连接。A submersible permanent magnet synchronous motor according to claim 1, wherein said housing assembly comprises a housing and output end couplings and tail end couplings respectively disposed at both ends of the housing, said output couplings The housings are connected by a thrust bearing; the output end coupling is used for connecting with a protector and a pump external to the submersible permanent magnet synchronous motor, connecting the submersible cable, and filling the interior of the housing; The tail end coupling is used to mount the encoder and is connected to an external seal and controller.
  3. 如权利要求2所述的潜油永磁同步电机，其特征在于，所述定子组合体包括多个单节铁芯，相邻的两个单节铁芯之间通过节间压装彼此相连组成多节式定子铁芯，在所述多节式定子铁芯的两端由中心向两侧分别依次设置压紧环和卡簧，将多节式定子铁芯压紧定位。The submersible permanent magnet synchronous motor according to claim 2, wherein said stator assembly comprises a plurality of single-core iron cores, and adjacent two single-core iron cores are connected to each other by inter-section press-fit The multi-section stator core is provided with a compression ring and a circlip in turn from the center to the two sides at both ends of the multi-section stator core, and the multi-section stator core is pressed and positioned.
  4. 如权利要求2所述的潜油永磁同步电机，其特征在于，所述转子组合体包括套设在转子主轴上的磁钢组合体，转子主轴的两端分别设有转子输出端轴套和转子尾部端轴套；The submerged-arm permanent magnet synchronous motor of claim 2, wherein the rotor assembly comprises a magnetic steel assembly sleeved on a main shaft of the rotor, and a rotor output end sleeve is respectively disposed at two ends of the rotor main shaft and Rotor tail end bushing;
    所述的磁钢组合体为多节式结构，由多个单排磁钢组通过浮动轴承彼此连接而成，每一个单排磁钢组由10个磁钢均匀排列在圆周上构成。The magnetic steel assembly is a multi-section structure, which is formed by connecting a plurality of single-row magnetic steel groups through floating bearings, and each single-row magnetic steel group is uniformly arranged on the circumference by 10 magnetic steels.
  5. 如权利要求4所述的潜油永磁同步电机，其特征在于，所述单排磁钢组的10个磁钢中，包括8个标准磁钢和2个键槽磁钢；The submerged-arm permanent magnet synchronous motor according to claim 4, wherein the single magnetic steel of the single-row magnetic steel group comprises 8 standard magnetic steels and 2 keyway magnetic steels;
    所述标准磁钢和键槽磁钢的两端分别在轴向上设有台阶，多个标准磁钢和键槽磁钢上的台阶组合成环形槽，相邻两个单排磁钢组之间的环形槽上设置径向压紧环；The two ends of the standard magnetic steel and the keyway magnetic steel are respectively provided with a step in the axial direction, and the steps of the plurality of standard magnetic steel and the keyway magnetic steel are combined into an annular groove, and between two adjacent single-row magnetic steel groups a radial compression ring is arranged on the annular groove;
    所述单排磁钢组的两端，还设有轴向压紧环。Both ends of the single row magnetic steel group are further provided with an axial compression ring.
  6. 如权利要求2所述的潜油永磁同步电机，其特征在于，所述输出端联接头包括本体，所述本体的一端设有管螺纹，用于与所述壳体连接，本体的中部设有注油孔，本体的另一端设有用于连接的螺纹孔组合；The submersible permanent magnet synchronous motor according to claim 2, wherein the output coupling head comprises a body, and one end of the body is provided with a pipe thread for connecting with the housing, and a central portion of the body is provided. There is an oil hole, and the other end of the body is provided with a threaded hole combination for connection;
    所述本体的内部设有联接螺纹孔、输出孔、轴承安装孔、销联接孔、轴向通孔、弧形斜面、电缆接口、凹槽、管螺纹、轴向过油孔和径向注油孔；所述联接螺纹孔均匀分布在输出端法兰圆周；所述输出孔内设有输出电机主轴输出端；推力轴承在所述轴承安装孔中安装定位；所述推力轴承的推力盘在所述销联接孔中固定；电机输出轴穿设在所述轴向通孔内；输入电缆通过所述电缆接口经弧形斜面进入壳体；凹槽内设有O型密封圈；所述壳体通过管螺纹与输出端联接头密封连接；油液通过径向注油孔输送到电机内部并进入轴向过油孔。The inside of the body is provided with a coupling threaded hole, an output hole, a bearing mounting hole, a pin coupling hole, an axial through hole, a curved bevel, a cable interface, a groove, a pipe thread, an axial oil hole and a radial oil hole. The coupling threaded hole is evenly distributed on the circumference of the output end flange; the output hole is provided with an output shaft of the output motor; the thrust bearing is mounted and positioned in the bearing mounting hole; the thrust disk of the thrust bearing is in the Fixing in the pin coupling hole; the motor output shaft is disposed in the axial through hole; the input cable enters the casing through the cable interface through the curved bevel; the O-ring is disposed in the groove; the casing passes The pipe thread is sealed with the output end coupling; the oil is delivered to the inside of the motor through the radial oil hole and enters the axial oil hole.
  7. 如权利要求3所述的潜油永磁同步电机，其特征在于，所述的单节铁芯包括硅钢片，所述硅钢片上设有定子槽、圆弧凹槽、绕线开槽和壳体联接槽，形成12槽的开槽式定子铁芯结构；绕组线圈安装在定子槽上，电缆穿过圆弧凹槽，硅钢片通过壳体联接槽与定子铁芯和壳体连接。A submersible permanent magnet synchronous motor according to claim 3, wherein said single-section iron core comprises a silicon steel sheet, and said silicon steel sheet is provided with a stator groove, a circular arc groove, a winding groove and a casing. The coupling groove forms a 12-slot slotted stator core structure; the winding coil is mounted on the stator slot, the cable passes through the arc groove, and the silicon steel sheet is connected to the stator core and the casing through the housing coupling groove.
  8. 如权利要求4所述的潜油永磁同步电机，其特征在于，所述转子主轴为细长结构，包括输出端、中间段和尾部端；所述的输出端为花键轴；所述的中间段为空心轴，径向均匀分布有多个过油孔，还设有用于组装转子组合体的细长键槽；所述的尾部端为空心轴；A submersible permanent magnet synchronous motor according to claim 4, wherein said rotor main shaft is an elongated structure including an output end, an intermediate portion and a tail end; said output end being a spline shaft; said The middle section is a hollow shaft, a plurality of oil passage holes are evenly distributed in the radial direction, and an elongated keyway for assembling the rotor assembly is further provided; the tail end is a hollow shaft;
    所述的输出端上设有花键槽、塞孔、凹槽、径向过油孔和空心轴孔，所述花键槽与电机输出轴的花键连接；凹槽内安装推力轴承；The output end is provided with a spline groove, a plug hole, a groove, a radial oil hole and a hollow shaft hole, wherein the spline groove is connected with the spline of the motor output shaft; the thrust bearing is installed in the groove;
    所述的中间段上设有径向过油孔和空心轴孔；The intermediate section is provided with a radial oil hole and a hollow shaft hole;
    所述的尾部端上设有径向过油孔、空心轴孔和编码器安装孔。The tail end is provided with a radial oil hole, a hollow shaft hole and an encoder mounting hole.
  9. 如权利要求5所述的潜油永磁同步电机，其特征在于，所述的键槽磁钢为圆弧片状结构，包括弧形的外表面和内表面，在外表面的两侧边缘，延其轴向方向分别设有台阶面，在内表面的一侧边缘，延其径向方向设有用于使磁钢在圆周上定位的键槽。 A submersible permanent magnet synchronous motor according to claim 5, wherein said keyway magnetic steel is a circular arc-like structure including an arcuate outer surface and an inner surface, and is extended at both side edges of the outer surface The axial direction is respectively provided with a stepped surface, and one side edge of the inner surface is provided with a key groove for positioning the magnetic steel on the circumference in the radial direction.
PCT/CN2014/089544 2013-12-27 2014-10-27 Submersible permanent magnet synchronous motor WO2015096547A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107064562A (en) * 2017-04-20 2017-08-18 吉林宇恒光电仪器有限责任公司 A kind of caliberating device of photoelectric encoder output speed error
CN109921563A (en) * 2019-04-22 2019-06-21 弘允新能源（上海）有限公司 A kind of flywheel close coupled type generator
US11128278B2 (en) 2019-11-13 2021-09-21 Extract Management Co., LLC Systems and methods for balancing unbalanced power cables
US11509199B2 (en) 2019-09-23 2022-11-22 Extract Management Company, Llc Systems and processes for aligning permanent magnet motors in an electric submersible pump

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134867B (en) * 2016-02-29 2024-06-14 中石化石油工程技术服务有限公司 Ultra-long iron core and few coil permanent magnet synchronous motor for driving underground electric drilling tool
CN111769661A (en) * 2020-07-08 2020-10-13 浙江都美电气技术股份有限公司 Submersible permanent magnet synchronous motor
CN113517767B (en) * 2021-04-21 2024-01-26 沈阳工业大学 Slender small-diameter low-speed high-torque submersible permanent magnet motor
CN113364235B (en) * 2021-05-28 2023-02-14 山东威马泵业股份有限公司 Coil inserting process method for stator of submersible motor
CN116545138B (en) * 2023-06-27 2023-10-24 无锡恒信北石科技有限公司 Stator structure and welding process thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101877521A (en) * 2009-04-30 2010-11-03 浙江关西电机有限公司 Multi-section servo submersible motor
CN102223032A (en) * 2011-06-27 2011-10-19 沈阳工业大学 Ultra-long structure motor composed of unit combined permanent magnet synchronous motors
CN203289295U (en) * 2013-05-31 2013-11-13 中国石油大学(华东) Low-speed large-torque submersible permanent-magnetic synchronous motor
CN203660845U (en) * 2013-12-27 2014-06-18 浙江中科德润科技有限公司 Submersible permanent magnet synchronous motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101877521A (en) * 2009-04-30 2010-11-03 浙江关西电机有限公司 Multi-section servo submersible motor
CN102223032A (en) * 2011-06-27 2011-10-19 沈阳工业大学 Ultra-long structure motor composed of unit combined permanent magnet synchronous motors
CN203289295U (en) * 2013-05-31 2013-11-13 中国石油大学(华东) Low-speed large-torque submersible permanent-magnetic synchronous motor
CN203660845U (en) * 2013-12-27 2014-06-18 浙江中科德润科技有限公司 Submersible permanent magnet synchronous motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107064562A (en) * 2017-04-20 2017-08-18 吉林宇恒光电仪器有限责任公司 A kind of caliberating device of photoelectric encoder output speed error
CN109921563A (en) * 2019-04-22 2019-06-21 弘允新能源（上海）有限公司 A kind of flywheel close coupled type generator
US11509199B2 (en) 2019-09-23 2022-11-22 Extract Management Company, Llc Systems and processes for aligning permanent magnet motors in an electric submersible pump
US11128278B2 (en) 2019-11-13 2021-09-21 Extract Management Co., LLC Systems and methods for balancing unbalanced power cables

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