CN212627544U - High-temperature-resistant motor suitable for high-temperature environment - Google Patents
High-temperature-resistant motor suitable for high-temperature environment Download PDFInfo
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- CN212627544U CN212627544U CN202020835970.4U CN202020835970U CN212627544U CN 212627544 U CN212627544 U CN 212627544U CN 202020835970 U CN202020835970 U CN 202020835970U CN 212627544 U CN212627544 U CN 212627544U
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- high temperature
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Abstract
The utility model discloses a high temperature resistant motor suitable for high temperature environment, including motor main part, last protector, lower protector, motor head, motor casing, tailstock, stator core, stator winding and rotor core, motor main part comprises last protector and lower protector. The utility model discloses suspend and push away the bearing and all adopt the carbide material, it has better temperature resistance and better wear resistance, the motor shaft adopts hollow structure, set up at the corresponding mounted position of each bearing and lead the oilhole, leave the air gap between rotor core and the stator core, it has oil return channel to open on the tailstock, the centrifugal force drive motor oil that produces is rotated through the motor shaft carries out circulation flow, the motor oil gets into in the motor shaft centre bore through motor shaft centre bore lower extreme, the centrifugal force that the motor shaft rotation produced makes the motor oil follow the corresponding oilhole of leading of each bearing and discharges and get into the vice lubrication of friction.
Description
Technical Field
The utility model relates to a high temperature motor technical field specifically is a high temperature resistant motor suitable for high temperature environment.
Background
With the deepened development of petroleum resources, a thickened oil thermal recovery development technology of double-horizontal-well steam-assisted gravity drainage is widely applied, firstly, two horizontal wells are drilled one above the other, high-temperature steam is continuously injected into an oil reservoir through the horizontal well with a higher position, then an upper oil layer is heated by the steam, so that the mobility of crude oil is enhanced, the crude oil flows to a lower horizontal well under the action of gravity, and finally the crude oil is lifted to the ground from the lower horizontal well through an electric pump.
At present, the thickened oil thermal recovery technology is successfully applied to the exploitation in China, but most of the oil wells are medium-low temperature oil wells, the underground environment temperature which can be endured by most of electric submersible pumps is only about 180 ℃ in the oil well exploitation process, the exploitation efficiency is low, only a few of foreign models of high-temperature electric submersible pumps can increase the tolerance temperature to about 200 ℃, the oil wells tend to saturate in the exploitation of the medium-low temperature oil wells in China, and only the oil wells are buried deeper and have higher temperature, but the underground environment temperature of the high-temperature oil wells can reach over 220 ℃, the existing electric submersible pumps are difficult to meet the exploitation requirements of the high-temperature oil wells, so that the high-temperature electric submersible pumps which can bear the underground high-temperature environment are urgently needed in the oil exploitation industry of China, the promotion of the high-temperature resistance of the motors is the key point of the promotion of the high-temperature resistance of the electric submersible pumps, but certain problems and defects still exist in the use process of the existing high-,
problem to prior art existence, the utility model provides a high temperature resistant motor suitable for high temperature environment compares the high temperature resistant motor who mentions in 201610707507.X, and it has higher temperature resistance performance this high temperature resistant motor, and reliable electromechanical structure and effectual lubrication and heat dissipation can satisfy the exploitation needs of high temperature oil well, and the problem that concrete needs are improved is as follows:
1. the existing high-temperature resistant motor is not provided with a rotor core which is radially supported by a common device, and the straightening bearing is made of a material which is not a non-magnetic material, so that the generation of electromagnetic eddy current cannot be effectively reduced, and the self-heating problem of the motor cannot be solved;
2. the existing high-temperature resistant motor cannot lubricate and cool each friction pair of the motor aiming at the circulation flow of motor oil;
3. current high temperature resistant motor, general device can not store more motor oil for the motor to shorten the life of motor, when motor oil is accumulated more, can not give the bigger expansion space of motor oil.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high temperature resistant motor suitable for high temperature environment, do not radially support rotor core with the general device that proposes in solving above-mentioned background art, and it is not non-magnetic conductive material to right the bearing adoption material, can not effectively reduce the production of electromagnetic eddy, can not solve the spontaneous heating problem of motor, general device can not store more motor oils for the motor, thereby shortened the life of motor, when motor oil accumulations is more, can not give the bigger expansion space scheduling problem of motor oil.
In order to achieve the above object, the utility model provides a following technical scheme: a high-temperature resistant motor suitable for a high-temperature environment comprises a motor main body, an upper protector, a lower protector, a motor head, a motor shell, a tailstock, a stator core, a stator winding and a rotor core, wherein the motor main body consists of the upper protector and the lower protector, the lower end of the upper protector is connected with the upper end of the motor main body, the lower end of the motor main body is connected with the top end of the lower protector, the motor main body comprises the motor head, the motor shell, the tailstock, the stator core, the stator winding, the rotor core and a motor shaft, the bottom end of the motor head is connected with the top end of the motor shell, the bottom end of the motor shell is connected with the top end of the tailstock, all joints are sealed by perfluorinated rubber rings capable of resisting 300 ℃, the stator core is fixedly arranged on the inner side wall of the motor shell, the stator winding is embedded in a stator core groove, the motor is characterized in that the lead cable penetrates through the motor head, the lead cable and the motor head are sealed through a high-temperature-resistant combined special-shaped rubber sealing ring, the rotor core is located at the central line position inside the motor shell and is designed in a segmented mode, the segmented rotor cores are fixedly sleeved on the motor shaft, the centralizing bearings are arranged between the segmented rotor cores, a thrust bearing is arranged in the motor head, the thrust bearing movable plate is fixedly connected with the motor shaft, and the thrust bearing static plate is fixedly connected with the motor head.
Preferably, the motor shaft is of a hollow structure, an air gap is reserved between the rotor core and the stator core, an oil return channel is formed in the tailstock, an oil filter is arranged at the bottom end of the tailstock, the top end of the oil filter is connected with a radial supporting bushing, and a main shaft protection pipe penetrates through the middle position of the outer side of the radial supporting bushing.
Preferably, a centering bushing is arranged between the centering bearing and the motor shaft, the centering bushing is fixedly sleeved on the motor shaft, the centering bushing and the centering bearing form a friction pair, and the centering bushing is made of an aluminum bronze material.
Preferably, the stator core is made of all steel, and the stator core is arranged on the longitudinal central shaft.
Preferably, an air gap is reserved between the rotor core and the stator core, an oil return channel is formed in the tailstock, an oil filter is installed at the bottom end of the tailstock, and an oil storage space inside the motor is formed in the top of the tailstock.
Preferably, the rotor core is formed by connecting a plurality of unit rotors in series, a centering bearing is arranged between every two adjacent unit rotors, the rotor core is radially supported through the centering bearing, and the centering bearing is made of a non-magnetic material.
Preferably, the insulating material of the magnet wire of the stator winding is an imported high-purity imine film.
This kind of high temperature resistant motor suitable for high temperature environment, through the utility model discloses compare with prior art, its higher temperature resistance ability that has, motor structure is reasonable high-efficient more, the multiple new material of application, the lubricated and heat radiation structure of efficient, can satisfy the exploitation needs of high temperature oil well very well, compares with prior art, the beneficial effects of the utility model are that:
(1) according to the high-temperature-resistant motor suitable for the high-temperature environment, the rotor core is formed by connecting a plurality of unit rotors in series, the centering bearing is arranged between every two adjacent unit rotors, the rotor core is radially supported by the centering bearing, and the centering bearing adopts a non-magnetic-conductive material, so that the generation of electromagnetic eddy current can be effectively reduced, and the self-heating of the motor is greatly reduced;
(2) the high-temperature resistant motor suitable for the high-temperature environment has the advantages that hard alloy materials are adopted in the thrust bearings, the high-temperature resistant motor has better temperature resistance and better wear resistance, the motor shaft is of a hollow structure, oil guide holes are formed in the corresponding mounting positions of the bearings, air gaps are reserved between a rotor core and a stator core, an oil return channel is formed in the tailstock, motor oil is driven to flow circularly through centrifugal force generated by rotation of the motor shaft and enters the center hole of the motor shaft through the lower end of the center hole of the motor shaft, the centrifugal force generated by rotation of the motor shaft enables the motor oil to be discharged from the corresponding oil guide holes of the bearings to enter friction pair lubrication, the motor oil coming out of the friction pair flows back to the tailstock through the air gaps between the stator and the rotor, an oil filter is arranged at the bottom end of the tailstock, a radial support bushing is connected to the top end of the, filtering the oil by an oil filter and entering a central hole of a motor shaft again to complete closed circulation of an oil way, and lubricating, radiating and cooling each friction pair of the motor by circulating flow of motor oil;
(3) this kind of high temperature resistant motor suitable for high temperature environment possesses bigger oil storage space and bigger flexible volume through last protector and lower protector structure, for more motor oil are stored to the motor, make the motor possess longer life to give the bigger expansion space of motor oil.
Drawings
Fig. 1 is a schematic front view of a partial structure of the present invention;
fig. 2 is a schematic front view of the local structure of the present invention.
In the figure: 1. an upper protector; 2. a thrust bearing plate; 3. a thrust bearing stationary plate; 4. a motor head; 5. A motor shaft; 6. a motor housing; 7. an air gap; 8. righting the bushing; 9. righting the bearing; 10. a stator core; 11. a rotor core; 12. a stator winding; 13. connecting a lead cable; 14. an oil storage space inside the motor; 15. a tailstock; 16. an oil filter; 17. a lower protector; 18. an oil return passage; 19. a radial support bushing; 20. a main shaft protecting pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides an embodiment: a high-temperature resistant motor suitable for a high-temperature environment comprises a motor main body, an upper protector 1, a lower protector 17, a motor head 4, a motor shell 6, a tailstock 15, a stator core 10, a stator winding 12 and a rotor core 11;
the lower end of the upper protector 1 is hermetically connected with the upper end of the motor head 4, the lower end of the motor head 4 is hermetically connected with the upper end of the motor shell 6, the lower end of the motor shell 6 is hermetically connected with the upper end of the tailstock 15, and the lower end of the tailstock 15 is hermetically connected with the upper end of the lower protector 17; the stator core 10 is fixedly installed on the inner surface of the motor shell 6, the stator winding 12 can make the electromagnetic wire resist the temperature of more than 280 ℃, the stator winding 12 is embedded in the stator core 10 groove, the upper end of the stator winding 12 is connected with the working power supply of the overground part of the high-temperature submersible electric pump through the lead cable 13, the lead cable 13 passes through the motor head 4, and the lead cable 13 and the motor head 4 are sealed; the rotor iron core 11 is positioned in the center of the motor shell 6, the rotor iron core 11 is fixedly sleeved on the motor shaft 5, and an air gap 7 is reserved between the stator iron core 10 and the rotor iron core 11; the motor shaft 5 adopts a hollow structure, oil guide holes are arranged at corresponding mounting positions of all bearings, the end of the motor shaft 5 extends to the motor head 4, and the upper end part of the motor shaft is sealed by using a screwed plug; the lower end of the motor shaft 5 extends to the tailstock 15, the lower end of the motor shaft is an oil inlet, and an oil filter 16 is arranged at the oil inlet; in the internal cavities of the motor head 4, the motor shell 6 and the tailstock 15, in the internal oil storage cavities of the upper protector 1 and the lower protector 17, motor oil is filled in the central hole and the air gap 7 of the motor shaft 5, the motor oil is driven to circularly flow by the centrifugal force generated by the rotation of the motor shaft 5, the motor oil enters the central hole of the motor shaft 5 through the oil inlet hole at the lower end of the motor shaft 5, the centrifugal force generated by the rotation of the motor shaft 5 enables the motor oil to be thrown out from the oil throwing hole to enter the friction pair for lubrication, the motor oil from the friction pair flows back to the tailstock 15 through the air gap 7 between the stator and the rotor, is filtered by the oil filter 16 and enters the central hole of the motor shaft 5 again to complete the closed circulation of an oil circuit, the lubrication and the heat dissipation and the temperature reduction of each friction pair of the motor are carried out by the circular flow of the motor oil, and the loss of, the upper protector 1 and the lower protector 17 have larger oil storage space and larger expansion amount, so that more motor oil is stored for the motor, the motor has longer service life, and larger expansion space is provided for the motor oil;
the stator core 10 is made of all steel, namely, is formed by laminating high-performance silicon steel sheets, and has the advantages that the all-steel stator can form a good continuous closed magnetic field and is beneficial to improving the electromagnetic efficiency, the rotor core 11 is formed by connecting a plurality of unit rotors in series, a centering bearing 9 is arranged between every two adjacent unit rotors, the rotor core 11 is radially supported by the centering bearing 9, a centering bush 8 is arranged between the centering bearing 9 and the motor shaft 5, the centering bush 8 is fixedly sleeved on the motor shaft 5, and the centering bush 8 and the centering bearing 9 form a friction pair; an oil guide hole is formed in the motor shaft 5 opposite to the centering bearing 9, an oil guide hole is formed in the centering bush 8, and motor oil is discharged through the oil guide hole and flows to the friction pair; the centering bush 8 has better wear resistance in a high-temperature environment, and the high-precision centering bush 8 and the centering bearing 9 obtained by accurate numerical control processing can accurately control the bearing clearance and avoid generating unbalanced magnetic pull force;
the centralizing bearing 9 is made of a non-magnetic conductive material, so that the generation of electromagnetic eddy current can be effectively reduced, the self-heating of the motor is greatly reduced, and the hardness is HRC 48-54; the centralizing bush 8 is made of aluminum bronze material, specifically QAL9-4-4-2, and the centralizing bearing 9 and the centralizing bush 8 made of the material have good wear resistance in high-temperature environment; a thrust bearing is arranged between a motor head 4 and a motor shaft 5, the thrust bearing comprises a thrust bearing movable plate 2 and a thrust bearing static plate 3, the thrust bearing movable plate 2 is fixedly arranged on the motor shaft 5, the thrust bearing static plate 3 is fixedly arranged on the motor head 4, a friction pair is formed between the thrust bearing static plate 3 and the thrust bearing movable plate 2 in a pairing mode and bears the axial force of the motor shaft 5, an oil guide hole is formed in the motor shaft 5 corresponding to the friction pair, motor oil is discharged through the oil guide hole and flows to the friction pair, and the thrust bearing is made of hard alloy materials and has better temperature resistance and better wear resistance; the centrifugal force generated by the rotation of the motor shaft 5 drives the motor oil to circularly flow, the motor oil enters the central hole of the motor shaft 5 through the lower end of the central hole of the motor shaft 5, the centrifugal force generated by the rotation of the motor shaft 5 enables the motor oil to be discharged from the corresponding oil guide holes of each bearing to enter a friction pair for lubrication, and the motor oil coming out of the friction pair flows back to the tailstock 15 through an air gap 7 between a stator and a rotor;
a radial supporting bush 19 is arranged between the tailstock 15 and the motor shaft 5, a main shaft protecting pipe 20 is sleeved on the motor shaft 5 at the upper part of the radial supporting bush 19, the lower end of the main shaft protecting pipe 20 is fixedly connected to the tailstock 15, an oil return channel 18 is arranged on the shell of the tailstock 15, and the oil return channel 18 is parallel to the motor shaft 5; the inner cavity of the motor shell 6 is communicated with the lower protector 17 through an oil return channel 18, a shield is arranged below the main shaft protective tube 20, an annular precipitation groove is formed in the tailstock 15 outside the oil return channel 18, impurities in oil are prevented from entering the oil return channel 18 through the shield, and the impurities in the oil are stored through the annular precipitation groove; an oil filter 16 is installed at an oil inlet at the lower end of the motor shaft 5, mechanical impurities are removed, the oil is filtered by the oil filter 16 and enters the central hole of the motor shaft 5 again to complete closed circulation of an oil path, and lubricating, heat dissipation and cooling are performed on each friction pair of the motor through motor oil circulation flow.
The working principle is as follows: firstly, current is led into a stator winding 12 through a lead cable 13, after the stator winding 12 is electrified, a rotating magnetic field is generated in a stator core 10, a rotor core 11 drives a motor shaft 5 to start rotating under the action of the magnetic field, motor oil positioned in a central hole of the motor shaft 5 is discharged through an oil guide hole to flow to a friction pair between a righting bearing 9 and a righting bush 8, and is discharged through the oil guide hole to flow to the friction pair between a thrust bearing movable plate 2 and a thrust bearing static plate 3 to lubricate and cool each friction pair, after the motor oil passes through the friction pair between the righting bearing 9 and the righting bush 8, the motor oil directly flows into an air gap 7 between the stator core 10 and the rotor core 11 and then flows back to a lower protector 17 in a spiral descending mode along with the rotation of the motor shaft 5, after the motor oil passes through the friction pair between the thrust bearing movable plate 2 and the thrust bearing static plate, will flow into the air gap 7 between the stator core 10 and the rotor core 11 at first, and join with the motor oil discharged from the oil guiding hole, and flow back downward together, when the motor oil flows through the upper part of the oil return channel 18, it is blocked by the shielding plate, the motor oil will flow into the oil return channel 18 after bypassing the shielding plate, in the process of the motor oil bypassing, the motor oil must pass through the upper part of the annular settling tank, because the density of the impurities (the particles falling off due to abrasion at each bearing) in the oil is greater than the motor oil, the impurities in the oil will sink gradually and fall into the annular settling tank, so as to realize the primary cleaning and isolation of the impurities in the oil, when the motor oil flows out of the oil return channel 18, it will flow into the lower protector 17 at first, because the motor shaft 5 rotates at high speed to discharge the oil through the oil guiding hole, the negative pressure will be generated in the center hole of the motor shaft 5, and the motor oil in the lower protector 17 will be sucked into the center hole of the motor shaft, the circulating flow of the motor oil is realized, and the oil filter 16 is arranged at the oil inlet at the lower end of the motor shaft 5, so that the motor oil flowing out of the oil return channel 18 is filtered through the oil filter 16, and the high cleanliness of the motor oil entering the central hole of the motor shaft 5 is ensured.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a high temperature resistant motor suitable for high temperature environment, includes motor main body, goes up protector (1), protector (17), motor head (4), motor casing (6), tailstock (15), stator core (10), stator winding (12) and rotor core (11), its characterized in that: the motor main body is composed of an upper protector (1) and a lower protector (17), the lower end of the upper protector (1) is connected with the upper end of the motor main body, the lower end of the motor main body is connected with the top end of the lower protector (17), the motor main body comprises a motor head (4), a motor shell (6), a tailstock (15), a stator core (10), a stator winding (12), a rotor core (11) and a motor shaft (5), the bottom end of the motor head (4) is connected with the top end of the motor shell (6), the bottom end of the motor shell (6) is connected with the top end of the tailstock (15), the stator core (10) is fixedly installed on the inner side wall of the motor shell (6), the stator winding (12) is embedded in a stator core (10) groove, the upper end of the stator winding (12) is connected with a working power supply of a high-temperature motor through a lead cable (13), and the lead, connect between lead cable (13) and motor head (4) to seal through high temperature resistant combination abnormal shape rubber seal, rotor core (11) are located the inside central line position of motor casing (6), and rotor core (11) are the segmentation design, and each segmentation rotor core (11) fixed suit all is provided with between each segmentation rotor core (11) and rights bearing (9) on motor shaft (5), be equipped with footstep bearing in motor head (4), footstep bearing movable plate (2) and motor shaft (5) fixed connection, footstep bearing static plate (3) and motor head (4) fixed connection.
2. A high temperature resistant electric machine suitable for use in a high temperature environment, as claimed in claim 1, wherein: the motor shaft (5) is of a hollow structure, an air gap (7) is reserved between a rotor core (11) and a stator core (10), an oil return channel (18) is formed in a tailstock (15), an oil filter (16) is arranged at the bottom end of the tailstock (15), the top end of the oil filter (16) is connected with a radial supporting bush (19), and a main shaft protective pipe (20) penetrates through the middle position of the outer side of the radial supporting bush (19).
3. A high temperature resistant electric machine suitable for use in a high temperature environment, as claimed in claim 1, wherein: a centering bush (8) is arranged between the centering bearing (9) and the motor shaft (5), the centering bush (8) is fixedly sleeved on the motor shaft (5), the centering bush (8) and the centering bearing (9) form a friction pair, and the centering bush (8) is made of an aluminum bronze material.
4. A high temperature resistant electric machine suitable for use in a high temperature environment, as claimed in claim 1, wherein: the stator core (10) is made of all steel, and the stator core (10) is arranged on a longitudinal central shaft.
5. A high temperature resistant electric machine suitable for use in a high temperature environment, as claimed in claim 1, wherein: an air gap (7) is reserved between the rotor core (11) and the stator core (10), an oil return channel (18) is formed in the tailstock (15), an oil filter is mounted at the bottom end of the tailstock (15), and an oil storage space (14) inside the motor is arranged at the top of the tailstock (15).
6. A high temperature resistant electric machine suitable for use in a high temperature environment, as claimed in claim 1, wherein: the rotor core (11) is formed by connecting a plurality of unit rotors in series, a centering bearing (9) is arranged between every two adjacent unit rotors, the rotor core (11) is radially supported through the centering bearing (9), and the centering bearing (9) is made of a non-magnetic material.
7. A high temperature resistant electric machine suitable for use in a high temperature environment, as claimed in claim 1, wherein: the insulating material of the electromagnetic wire of the stator winding (12) adopts an imported high-purity imine film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020835970.4U CN212627544U (en) | 2020-05-19 | 2020-05-19 | High-temperature-resistant motor suitable for high-temperature environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020835970.4U CN212627544U (en) | 2020-05-19 | 2020-05-19 | High-temperature-resistant motor suitable for high-temperature environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212627544U true CN212627544U (en) | 2021-02-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020835970.4U Withdrawn - After Issue CN212627544U (en) | 2020-05-19 | 2020-05-19 | High-temperature-resistant motor suitable for high-temperature environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212627544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050696A (en) * | 2021-11-10 | 2022-02-15 | 榆林启迈油服科技有限公司 | Permanent magnet motor for high-temperature-resistant high-speed screw pump |
-
2020
- 2020-05-19 CN CN202020835970.4U patent/CN212627544U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050696A (en) * | 2021-11-10 | 2022-02-15 | 榆林启迈油服科技有限公司 | Permanent magnet motor for high-temperature-resistant high-speed screw pump |
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Granted publication date: 20210226 Effective date of abandoning: 20210318 |
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Granted publication date: 20210226 Effective date of abandoning: 20210318 |
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Effective date of registration: 20220617 Address after: Complex building 20-3, 4th Street, Shenyang Economic and Technological Development Zone, Liaoning 110027 Patentee after: TONGYI TECHNOLOGY CO.,LTD SHENYANG University OF TECHNOLOGY Address before: No.23-2, Hunhe 15th Street, Shenyang Economic and Technological Development Zone, Liaoning 110000 Patentee before: Shenyang Petroleum Technology Development Co.,Ltd. Patentee before: Karamay tianxingtai Petroleum Technology Co., Ltd |
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