CN209930071U - Full-sealed submersible linear motor - Google Patents
Full-sealed submersible linear motor Download PDFInfo
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- CN209930071U CN209930071U CN201921110545.2U CN201921110545U CN209930071U CN 209930071 U CN209930071 U CN 209930071U CN 201921110545 U CN201921110545 U CN 201921110545U CN 209930071 U CN209930071 U CN 209930071U
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Abstract
The utility model discloses a totally enclosed submersible linear motor, which comprises a rotor, a stator and a polished rod, wherein the upper end of the stator is provided with a fixed pipe, the upper end of the fixed pipe is connected with a sand scraper limiting sleeve through an elastic sealing device, and a sand scraper is arranged in the cavity of the sand scraper limiting sleeve; the lower extreme of stator is equipped with outer tube and center tube, and the center tube is established at the outer tube intracavity, and the center tube lower extreme is equipped with end stifled, is equipped with the oiling valve on the end stifled, is equipped with the elasticity capsule between center tube and the outer tube, and the both ends of elasticity capsule are fixed at the both ends of center tube through last clamp and lower clamp respectively, are equipped with outer through-hole on the lateral wall of outer tube, are equipped with interior through-hole on the lateral wall. The utility model discloses a to the totally enclosed of latent oily linear electric motor's active cell and stator, inside making outside well liquid can't get into the motor, be full of motor oil simultaneously between active cell and stator, play lubricated, abrasionproof and decrease the effect, prolonged latent oily linear electric motor's life.
Description
Technical Field
The utility model relates to an oil-submersible linear motor's improvement, specific oil-submersible linear motor of totally enclosed type that says so is applicable to in the oil recovery operation of oil-submersible linear motor oil-well pump.
Background
In an oil extraction system of the submersible linear motor, the performance of the submersible linear motor is particularly important, the submersible linear motor consists of a rotor and a stator, most of the submersible linear motors applied at present are open structures, namely, well fluid is filled between the rotor and the stator, the rotor and the stator are directly contacted with the well fluid, and although a sand scraper is arranged at the joint of an oil well pump and the motor, the situation that particulate matters or corrosive media in the well fluid enter the motor cannot be avoided; the lower part of the motor is communicated with well fluid, and no corresponding part is provided to prevent the well fluid from entering, so that the service life of the submersible linear motor is greatly reduced, particularly in the medium containing granular substances or corrosion, the rotor and the stator are seriously damaged, and the service life of the whole set of oil extraction device is shortened.
Disclosure of Invention
An object of the utility model is to provide a simple structure avoids diving oily linear electric motor active cell and stator inner chamber and direct and well liquid contact, prevents inside well liquid soaks the motor, the oily linear electric motor of totally enclosed of the oily linear electric motor life of extension.
In order to achieve the above purpose, the utility model adopts the technical scheme that: this latent oil linear electric motor of totally enclosed formula, including active cell, stator and polished rod, the upper end of active cell and the lower extreme fixed connection of polished rod, the active cell setting is in the stator cavity, active cell and stator clearance fit, its characterized in that: the upper end of the stator is fixedly provided with a fixed pipe, the upper end of the fixed pipe is fixedly provided with an elastic sealing device, the upper end of the elastic sealing device is fixedly provided with a sand scraper limiting sleeve, a sand scraper is arranged in a cavity of the sand scraper limiting sleeve, and a polished rod is arranged in the cavities of the sand scraper and the elastic sealing device; the fixed outer tube that is equipped with on the lower extreme lateral wall of stator, the fixed center tube that is equipped with on the lateral wall of stator inner chamber lower extreme, the center tube is established at the outer tube intracavity, it is stifled at the bottom of the fixed lower extreme that is equipped with of center tube, be equipped with the oiling valve that is linked together with the center tube inner chamber on the end stifled, be equipped with the elasticity capsule in the ring cavity between center tube and outer tube, the upper end of elasticity capsule is fixed on the upper end outer wall of center tube through last clamp, the lower extreme of elasticity capsule is fixed on the lower extreme outer wall of center tube through clamp down, be.
The elastic sealing device comprises a sealing sleeve, a centering ring and a sealing ring, wherein the lower end of the sealing sleeve is fixedly connected with the upper end of a fixed pipe through threads, the upper end of the sealing sleeve is fixedly connected with the lower end of a sand scraper limiting sleeve through threads, two annular grooves embedded into the sealing ring are formed in the inner wall of a cavity of the sealing sleeve, the centering ring is arranged on the lower portion of an inner cavity of the sealing sleeve, and the centering ring is sleeved on the polished rod.
The side wall of the sand scraper limiting sleeve is provided with a sand discharge hole, the inner wall of the cavity of the sand scraper limiting sleeve is provided with an annular bulge, and the peripheral edge of the sand scraper is arranged between the annular bulge in the cavity of the sand scraper limiting sleeve and the sealing sleeve of the elastic sealing device.
The bottom plug is in clearance fit with the lower end of the inner cavity of the outer sleeve.
The bottom plug is fixedly connected with the lower end of the central tube in a threaded manner, the upper end of the outer sleeve is fixedly connected with the lower end of the outer wall of the stator in a threaded manner, the upper end of the central tube is fixedly connected with the lower end of the inner cavity of the stator in a threaded manner, and the upper end of the stator is fixedly connected with the lower end of the fixed tube in a threaded manner.
The side wall of the fixed pipe is provided with an exhaust hole, and an exhaust plug is arranged in the exhaust hole.
The outer diameter of the polish rod is the same as that of the rotor.
The beneficial effects of the utility model reside in that: through the complete sealing to latent oily linear electric motor's active cell and stator, make inside outside well liquid can't get into the motor, be full of motor oil simultaneously between active cell and stator, play lubricated, abrasionproof and decrease the effect, even stator inner tube damages in addition, motor oil immerses the stator, still makes the motor keep normal work, has prolonged latent oily linear electric motor's life.
Drawings
Fig. 1 is a schematic structural sectional view of the present invention.
In the figure: 1. a polish rod; 2. a sand scraper; 3. a sand scraper limiting sleeve; 4. a righting ring; 5. air exhaust and blocking; 6. a mover; 7. a stator; 8. an upper hoop; 9. an outer sleeve; 10. a central tube; 11. an elastomeric capsule; 12. bottom blocking; 13. an oil filling valve; 14. a lower hoop; 15. an outer through hole; 16. an inner through hole; 17. a fixed tube; 18. a seal ring; 19. sealing sleeves; 20. and (4) sand discharge holes.
Detailed Description
The present invention is made with reference to fig. 1. This latent oil linear electric motor of totally enclosed formula, including active cell 6, stator 7 and polished rod 1, active cell 6's upper end and polished rod 1's lower extreme fixed connection, polished rod 1's upper end and the plunger fixed connection of oil-well pump, active cell 6 sets up in 7 intracavitys of stator, active cell 6 and 7 clearance fit of stator, its characterized in that: the upper end of the stator 7 is fixedly provided with a fixed pipe 17, the upper end of the fixed pipe 17 is fixedly provided with an elastic sealing device, the upper end of the elastic sealing device is fixedly provided with a sand scraper limiting sleeve 3, the upper end of the sand scraper limiting sleeve 3 is connected with a sieve tube at the lower end of an oil well pump, a sand scraper 2 is arranged in a cavity of the sand scraper limiting sleeve 3, and a polished rod 1 is arranged in the cavities of the sand scraper 2 and the elastic sealing device; the fixed outer tube 9 that is equipped with on the lower extreme lateral wall of stator 7, the fixed center tube 10 that is equipped with on the lateral wall of stator 7 inner chamber lower extreme, center tube 10 is established in outer tube 9 intracavity, stifled 12 at the fixed end that is equipped with of lower extreme of center tube 10, be equipped with the oiling valve 13 that is linked together with the center tube 10 inner chamber on end stifled 12, be equipped with elasticity capsule 11 in the ring cavity between center tube 10 and outer tube 9, elasticity capsule 11's upper end is fixed on the upper end outer wall of center tube 10 through last clamp 8, elasticity capsule 11's lower extreme is fixed on the lower extreme outer wall of center tube 10 through lower clamp 14, be equipped with outer through-hole 15 on the lateral wall.
The elastic sealing device is composed of a sealing sleeve 19, a centering ring 4 and a sealing ring 18, the lower end of the sealing sleeve 19 is fixedly connected with the upper end of a fixed pipe 17 through threads, the upper end of the sealing sleeve 19 is fixedly connected with the lower end of a sand scraper limiting sleeve 3 through threads, two annular grooves embedded into the sealing ring 18 are formed in the inner wall of a cavity of the sealing sleeve 19, the centering ring 4 is arranged on the lower portion of an inner cavity of the sealing sleeve 19, and the centering ring 4 is sleeved on the polished rod 1.
The side wall of the sand scraper limiting sleeve 3 is provided with a sand discharge hole 20, the inner wall of the cavity of the sand scraper limiting sleeve 3 is provided with an annular bulge, and the periphery of the sand scraper 2 is arranged between the annular bulge in the cavity of the sand scraper limiting sleeve 3 and a sealing sleeve 19 of an elastic sealing device, so that the sand scraper 2 is fixed.
The bottom plug 12 is in clearance fit with the lower end of the inner cavity of the outer sleeve 9.
The bottom plug 12 is fixedly connected with the lower end of the central tube 10 through threads, the upper end of the outer sleeve 9 is fixedly connected with the lower end of the outer wall of the stator 7 through threads, the upper end of the central tube 10 is fixedly connected with the lower end of the inner cavity of the stator 7 through threads, and the upper end of the stator 7 is fixedly connected with the lower end of the fixed tube 17 through threads.
The side wall of the fixed pipe 17 is provided with an exhaust hole, and an exhaust plug 5 is arranged in the exhaust hole.
The outer diameter of the polish rod 1 is the same as that of the mover 6.
Use the utility model discloses the time, open the exhaust block 5 in the exhaust hole on the fixed pipe 17 lateral wall, from oiling valve 13 to 10 intracavity injections motor oil of center tube, motor oil gets into the 11 intracavity of elastic capsule through interior through-hole 16 on the center tube 10 lateral wall, and motor oil also can get into the fixed pipe 17 intracavity through the clearance between active cell 6 and the stator 7, and after motor oil was filled fully, the exhaust hole was closed to precession exhaust block 5, and oiling valve 13 closes. In the process that the rotor 6 drives the polished rod 1 to move linearly, the sand scraper 2 can scrape off dirt attached to the side wall of the polished rod 1 and discharge the dirt from the sand discharge hole 20; the sand scraper 2, the sealing ring 18, the sealing sleeve 19 and the centralizing ring 4 are tightly matched with the polish rod 1 to play a role in sealing and isolating, and the volume of an inner cavity at the top of the stator 7 cannot change because the outer diameter of the polish rod 1 is the same as that of the rotor 6; the bottom of the stator 7 is sealed and isolated by an elastic capsule 11 and a bottom plug 12, motor oil is injected into the stator, well fluid directly contacts the outside of the elastic capsule 11 through an outer through hole 15 of an outer sleeve 9, and the pressure of the well fluid is kept to be the same as that of the internal motor oil; when the rotor 6 moves downwards, motor oil in the central tube 10 enters the elastic capsule 11 through the inner through hole 16, so that the elastic capsule 11 expands to press out well fluid in the outer sleeve 9; when the rotor 6 moves upwards, well liquid enters the inner part of the outer sleeve 9, the volume of the elastic capsule 11 is reduced, the motor oil is pressed into the central tube 10, and the lower space is filled; the internal motor oil and the external well fluid are kept in pressure balance all the time in the whole process.
Claims (7)
1. Full-sealed submersible linear motor, including active cell (6), stator (7) and polished rod (1), the upper end of active cell (6) and the lower extreme fixed connection of polished rod (1), active cell (6) set up in stator (7) intracavity, active cell (6) and stator (7) clearance fit, its characterized in that: a fixed pipe (17) is fixedly arranged at the upper end of the stator (7), an elastic sealing device is fixedly arranged at the upper end of the fixed pipe (17), a sand scraper limiting sleeve (3) is fixedly arranged at the upper end of the elastic sealing device, a sand scraper (2) is arranged in a cavity of the sand scraper limiting sleeve (3), and a polished rod (1) is arranged in the cavities of the sand scraper (2) and the elastic sealing device; the fixed outer tube (9) that is equipped with on the lower extreme lateral wall of stator (7), fixed center tube (10) that is equipped with on the lateral wall of stator (7) inner chamber lower extreme, establish in outer tube (9) intracavity center tube (10), lower extreme fixed the end of center tube (10) is equipped with stifled (12), be equipped with on end stifled (12) with oil filler valve (13) that center tube (10) inner chamber is linked together, be equipped with elasticity capsule (11) in the annular cavity between center tube (10) and outer tube (9), the upper end of elasticity capsule (11) is fixed on the upper end outer wall of center tube (10) through last clamp (8), the lower extreme of elasticity capsule (11) is fixed on the lower extreme outer wall of center tube (10) through clamp (14) down, be equipped with outer through-hole (15) on the lateral wall of outer tube (9), be equipped with.
2. The fully-sealed submersible linear motor according to claim 1, characterized in that: elastic sealing device, by seal cover (19), right ring (4) and sealing washer (18) constitute, the lower extreme of seal cover (19) is fixed with the upper end threaded connection of fixed pipe (17), the upper end of seal cover (19) is fixed with the lower extreme threaded connection of sand scraper stop collar (3), be equipped with the ring channel of two embedding sealing washers (18) on the intracavity wall of seal cover (19), be equipped with in the inner chamber lower part of seal cover (19) and right ring (4), right ring (4) cover is established on polished rod (1).
3. The fully-sealed submersible linear motor according to claim 1, characterized in that: the side wall of the sand scraper limiting sleeve (3) is provided with a sand discharge hole (20), the inner wall of the cavity of the sand scraper limiting sleeve (3) is provided with an annular bulge, and the periphery of the sand scraper (2) is arranged between the annular bulge in the cavity of the sand scraper limiting sleeve (3) and a sealing sleeve (19) of the elastic sealing device.
4. The fully-sealed submersible linear motor according to claim 1, characterized in that: the bottom plug (12) is in clearance fit with the lower end of the inner cavity of the outer sleeve (9).
5. The fully-sealed submersible linear motor according to claim 1, characterized in that: the bottom plug (12) is fixedly connected with the lower end of the central tube (10) through threads, the upper end of the outer sleeve (9) is fixedly connected with the lower end of the outer wall of the stator (7) through threads, the upper end of the central tube (10) is fixedly connected with the lower end of the inner cavity of the stator (7) through threads, and the upper end of the stator (7) is fixedly connected with the lower end of the fixed tube (17) through threads.
6. The fully-sealed submersible linear motor according to claim 1, characterized in that: the side wall of the fixed pipe (17) is provided with an exhaust hole, and an exhaust plug (5) is arranged in the exhaust hole.
7. The fully-sealed submersible linear motor according to claim 1, characterized in that: the outer diameter of the polish rod (1) is the same as that of the rotor (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110545.2U CN209930071U (en) | 2019-07-16 | 2019-07-16 | Full-sealed submersible linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110545.2U CN209930071U (en) | 2019-07-16 | 2019-07-16 | Full-sealed submersible linear motor |
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| Publication Number | Publication Date |
|---|---|
| CN209930071U true CN209930071U (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921110545.2U Active CN209930071U (en) | 2019-07-16 | 2019-07-16 | Full-sealed submersible linear motor |
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| Country | Link |
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| CN (1) | CN209930071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787454A (en) * | 2020-12-29 | 2021-05-11 | 刘俊 | Submersible motor pressure compensation device and submersible motor |
-
2019
- 2019-07-16 CN CN201921110545.2U patent/CN209930071U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787454A (en) * | 2020-12-29 | 2021-05-11 | 刘俊 | Submersible motor pressure compensation device and submersible motor |
| CN112787454B (en) * | 2020-12-29 | 2022-05-27 | 刘俊 | Submersible motor pressure compensation device and submersible motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Fully sealed submersible linear motor Effective date of registration: 20200925 Granted publication date: 20200110 Pledgee: Shandong Yingxin Financing Guarantee Co.,Ltd. Pledgor: SHANDONG WEIMA PUMPS MANUFACTURING Co.,Ltd. Registration number: Y2020370000146 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210924 Granted publication date: 20200110 Pledgee: Shandong Yingxin Financing Guarantee Co.,Ltd. Pledgor: SHANDONG WEIMA PUMPS MANUFACTURING Co.,Ltd. Registration number: Y2020370000146 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Fully sealed submersible linear motor Effective date of registration: 20221024 Granted publication date: 20200110 Pledgee: Laiwu branch of China Postal Savings Bank Co.,Ltd. Pledgor: SHANDONG WEIMA PUMPS MANUFACTURING Co.,Ltd. Registration number: Y2022980019328 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |