CN214196534U - Magnetic transmission device for underground slurry generator - Google Patents
Magnetic transmission device for underground slurry generator Download PDFInfo
- Publication number
- CN214196534U CN214196534U CN202120113584.9U CN202120113584U CN214196534U CN 214196534 U CN214196534 U CN 214196534U CN 202120113584 U CN202120113584 U CN 202120113584U CN 214196534 U CN214196534 U CN 214196534U
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- Prior art keywords
- magnetic
- generator
- shell
- main shaft
- periphery
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 239000002002 slurry Substances 0.000 title abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000010687 lubricating oil Substances 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000010425 asbestos Substances 0.000 claims description 3
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims 2
- 230000005611 electricity Effects 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
A magnetic transmission device for an underground slurry generator comprises a main shaft, wherein the upper end of the periphery of the main shaft is connected with a generator shell through a high-speed deep groove ball bearing, an inner magnetic rotor is fixed on the periphery of the lower end of the generator shell, isolation sleeves are arranged on the peripheries of the inner magnetic rotor and the generator shell, a magnetic drive shell is mounted on the isolation sleeves through a high-speed centering bearing, the isolation sleeves are in interference fit with the main shaft, an outer magnetic rotor is fixed inside the magnetic drive shell and is filled with high-temperature lubricating oil, and an oil inlet and outlet rotary plug hole is formed in the lower portion of the magnetic drive shell; the inner magnetic rotor and the outer magnetic rotor rotate synchronously when in work, the generator permanent magnet is fixed inside the generator shell, the generator electronic coil is fixed on the main shaft to form a stator-rotor relationship to generate a rotating magnetic field, and the generator electronic coil fixed on the main shaft cuts magnetic lines of force to generate electricity; the mud applies axial pressure to the top cover and compresses the first compensation spring and the second compensation spring, so that the isolation sleeve is in contact seal with the magnetic drive shell; has the advantages of reasonable structure, strong sealing performance, stable transmission and long service life.
Description
Technical Field
The utility model belongs to the technical field of automatic vertical drilling supplies power in the pit, in particular to magnetic transmission for mud generator in the pit.
Background
In the working process of the existing underground slurry generator, a high-speed bearing, a generator coil, a rotor and the like are exposed in circulating drilling fluid, and parts are easily damaged by long-term erosion and abrasion of slurry, so that the service life of the generator is shortened, the maintenance cost is improved, and the normal operation of underground operation is influenced.
The existing general magnetic transmission device does not seal the high-speed bearing of the device, and the high-speed bearing can still be eroded by mud when the device works underground.
Disclosure of Invention
In order to overcome the not enough of above-mentioned prior art, the utility model aims to provide a can seal high-speed bearing and mud generator, transmit the moment of torsion simultaneously for mud generator electricity generation and output constant power's magnetic transmission device for mud generator in the pit has rational in infrastructure, the leakproofness is strong, the transmission is stable and long service life's advantage.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a magnetic transmission device for a downhole slurry generator comprises a main shaft 14, wherein a top cover 1 is arranged at the top of the main shaft 14, the upper end of the periphery of the main shaft 14 is connected with a generator shell 5 through a high-speed deep groove ball bearing 24 respectively to form a cavity gap 25, a generator permanent magnet 27 is fixed in the cavity gap 25 and on the inner wall of the generator shell 5, a generator electronic coil 26 is fixed in the cavity gap 25 and on the periphery of the main shaft 14, an inner magnetic rotor 8 is fixed on the periphery of the lower end of the generator shell 5, an isolation sleeve 9 is arranged on the peripheries of the inner magnetic rotor 8 and the generator shell 5, the top wall of the isolation sleeve 9 is fixed with the top cover 1 through a bolt, a first compensation spring 2 and a first piston ring 3 are sleeved below the top wall of the isolation sleeve 9 and on the periphery of the isolation sleeve 9 respectively, two ends of the first compensation spring 2 are tightly attached between the isolation sleeve 9 and the first piston ring 3, the lower end of the inner wall of the isolation sleeve 9 is in interference fit with the main shaft 14, and the lower end of the isolation sleeve 9 and the periphery close to the first piston ring 3 are respectively through a high-speed centering bearing 22 and a high-speed centering bearing 22 The inner wall of the magnetic drive shell 6 is connected, an external magnetic rotor 7 is arranged between the inner wall of the magnetic drive shell 6 and the high-speed centralizing bearing 22, and a turbine 28 is fixed at the top end of the periphery of the magnetic drive shell 6; an oil inlet and outlet tap hole 10 is formed in the lower shell of the magnetic drive shell 6, the lower end face of the magnetic drive shell 6 is respectively connected with the middle-lower section of the periphery of the main shaft 14 and the top end of a bearing ring 11 on the periphery of the main shaft through a high-speed thrust bearing 21, a second compensating spring 18 and a second piston ring 19 are respectively sleeved at the upper end of the periphery of the bearing ring 11, two ends of the second compensating spring 18 are tightly attached between the second piston ring 19 and the bearing ring 11, the outer ring of the second piston ring 19 is connected with the bottom end of the magnetic drive shell 6, the lower end of the periphery of the bearing ring 11 is connected with the shell 16 through a low-speed main bearing 17, a locking compression nut 13 is arranged at the bottom of the bearing ring 11, and the locking compression nut 13 is in threaded connection with the lower end of the main shaft 14.
The inside of the magnetic force driving housing 6 is filled with high temperature lubricating oil.
The first piston ring 3 is internally filled with a first high-speed dynamic seal assembly 4, and the second piston ring 19 is internally filled with a second high-speed dynamic seal assembly 20.
The generator shell 5 is in clearance fit with the main shaft 14, and a dynamic seal assembly 23 is filled inside the generator shell.
The inner wall of the bearing ring 11 is in clearance connection with the periphery of the main shaft 14, and the static seal assembly 15 is filled inside the bearing ring.
The casing 16 is provided with a pressure relief hole 12 for allowing slurry to flow therethrough.
The first high-speed dynamic seal assembly 4, the second high-speed dynamic seal assembly 20 and the dynamic seal assembly 23 are made of rubber rings.
The static seal assembly 15 is made of asbestos.
The outer magnetic rotor 7, the inner magnetic rotor 8 and the generator permanent magnet 27 are made of samarium cobalt, the working temperature is 300 ℃, the number of permanent magnet magnetic poles of the outer magnetic rotor 7 and the inner magnetic rotor 8 is 8 pairs, and a combined push-pull arrangement mode that NS magnetic poles are alternately arranged is adopted.
The isolation sleeve 9 is made of a titanium alloy material, the tensile strength is 895MPa, and the magnetic drive shell 6 and the generator shell 5 are made of soft magnetic silicon steel.
The beneficial effects of the utility model reside in that:
this device is through utilizing first compensation spring 2, second compensation spring 18, first piston ring 3, second piston ring 19, first high-speed dynamic seal subassembly 4 and the high-speed dynamic seal subassembly 20 of second to constitute two pairs of compensation formula high-speed dynamic seal subassemblies and keep apart mud outside spacer 9, guarantee simultaneously that the inside high temperature lubricating oil pressure of magnetic drive shell 6 is balanced with outside, the part of cooperating with main shaft 14 is filled with corresponding seal assembly in cooperation department, make all high speed bearings all seal in the magnetic drive shell that is full of high temperature lubricating oil, make high speed bearing and mud keep apart and have good lubricated state, generator housing 5 and inside spare part all seal inside spacer 9, the wearing and tearing erosion of mud has been avoided. The outer magnetic rotor 7 and the inner magnetic rotor 8 are separated by a spacer 9, and torque is transmitted by the magnetic force of the permanent magnet. The utility model has the advantages of reasonable structure, strong sealing performance, stable transmission and long service life.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of the device of the present invention.
Fig. 2 is a schematic view of the arrangement of the inner magnet rotor 8 and the outer magnet rotor 7.
In the figure: 1. a top cover; 2. a first compensation spring; 3. a first piston ring; 4. a first dynamic seal assembly; 5. a generator housing; 6. a magnetically actuated housing; 7. an outer magnetic rotor; 8. an inner magnetic rotor; 9. an isolation sleeve; 10. oil inlet and outlet screw plug holes; 11. a bearing ring; 12. a pressure relief vent; 13. a lock jam nut; 14. a main shaft; 15. a static seal assembly; 16. a housing; 17. a low-speed main bearing; 18. a second compensation spring; 19. a second piston ring; 20. a second dynamic seal assembly; 21 a high speed thrust bearing; 22. righting the bearing at a high speed; 23. a dynamic seal assembly; 24. a high-speed deep groove ball bearing; 25. a cavity; 26. a generator electronic coil; 27. a generator permanent magnet; 28. a turbine.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a magnetic transmission device for a downhole slurry generator comprises a main shaft 14, a top cover 1 is arranged at the top of the main shaft 14, the upper end of the outer periphery of the main shaft 14 is connected with a generator housing 5 through a high-speed deep groove ball bearing 24 to form a cavity 25, a generator permanent magnet 27 is fixed in the cavity 25 and on the inner wall of the generator housing 5, a generator electronic coil 26 is fixed in the cavity 25 and on the outer periphery of the main shaft 14, an inner magnetic rotor 8 is fixed on the outer periphery of the lower end of the generator housing 5, an isolation sleeve 9 is arranged on the outer peripheries of the inner magnetic rotor 8 and the generator housing 5, the top wall of the isolation sleeve 9 is fixed with the top cover 1 through a bolt, a first compensation spring 2 and a first piston ring 3 are sleeved below the top wall of the isolation sleeve 9 and on the outer periphery of the isolation sleeve 9, two ends of the first compensation spring 2 are tightly attached between the isolation sleeve 9 and the first piston ring 3, and the lower end of the inner wall of the isolation sleeve 9 is in interference fit with the main shaft 14, the lower end of the periphery of the isolation sleeve 9 and the position, close to the first piston ring 3, of the periphery of the isolation sleeve 9 are respectively connected with the inner wall of the magnetic drive shell 6 through a high-speed centering bearing 22, an external magnetic rotor 7 is arranged between the inner wall of the magnetic drive shell 6 and the high-speed centering bearing 22, and a turbine 28 is fixed at the top end of the periphery of the magnetic drive shell 6; an oil inlet and outlet tap hole 10 is formed in the lower shell of the magnetic drive shell 6, the lower end face of the magnetic drive shell 6 is respectively connected with the middle-lower section of the periphery of the main shaft 14 and the top end of a bearing ring 11 on the periphery of the main shaft through a high-speed thrust bearing 21, a second compensating spring 18 and a second piston ring 19 are respectively sleeved at the upper end of the periphery of the bearing ring 11, two ends of the second compensating spring 18 are tightly attached between the second piston ring 19 and the bearing ring 11, the outer ring of the second piston ring 19 is connected with the bottom end of the magnetic drive shell 6, the lower end of the periphery of the bearing ring 11 is connected with the shell 16 through a low-speed main bearing 17, a locking compression nut 13 is arranged at the bottom of the bearing ring 11, and the locking compression nut 13 is in threaded connection with the lower end of the main shaft 14.
The inside of the magnetic force driving housing 6 is filled with high temperature lubricating oil.
The first piston ring 3 is internally filled with a first high-speed dynamic seal assembly 4, and the second piston ring 19 is internally filled with a second high-speed dynamic seal assembly 20.
The generator shell 5 is in clearance fit with the main shaft 14, and a dynamic seal assembly 23 is filled inside the generator shell.
The inner wall of the bearing ring 11 is in clearance connection with the periphery of the main shaft 14, and the static seal assembly 15 is filled inside the bearing ring.
The casing 16 is provided with a pressure relief hole 12 for allowing slurry to flow therethrough.
The first high-speed dynamic seal assembly 4, the second high-speed dynamic seal assembly 20 and the dynamic seal assembly 23 are made of rubber rings.
The static seal assembly 15 is made of asbestos.
Referring to fig. 2, the material of the outer magnetic rotor 7, the inner magnetic rotor 8 and the generator permanent magnet 27 is samarium cobalt, the working temperature is 300 ℃, the number of permanent magnet poles of the outer magnetic rotor 7 and the inner magnetic rotor 8 is 8 pairs, and a combined push-pull arrangement mode that NS magnetic poles are alternately arranged is adopted.
The isolation sleeve 9 is made of a titanium alloy material, the tensile strength is 895MPa, and the magnetic drive shell 6 and the generator shell 5 are made of soft magnetic silicon steel.
The utility model discloses a theory of operation does:
in the drilling process, slurry flows in from the upper end to drive the turbine 28 to rotate, the magnetic force integrated with the turbine 28 drives the shell 6 and the external magnetic rotor 7 to rotate, the magnetic force drives the shell 6 to drive the outer ring of the high-speed centering bearing 22 and the upper end of the high-speed thrust bearing 21 to rotate, the isolation sleeve 9 and the main shaft 14 are fixed and static, when the external magnetic rotor 7 rotates for a certain angle, two adjacent magnetic poles respectively generate attraction force and repulsion force to the corresponding magnetic poles inside, components in the motion direction are superposed, and the directions of the components perpendicular to the motion direction are opposite and mutually offset, so that the internal magnetic rotor 8 is driven to rotate, the transmission of force and motion is realized, the generator shell 5 and the generator permanent magnet 27 fixed together with the internal magnetic rotor 8 also rotate along with the rotation to generate a rotating magnetic field, and the generator electronic coil 26 fixed on the main shaft 14 cuts magnetic lines of force to generate electricity; mud exerts axial pressure for top cap 1, compress first compensating spring 2, second compensating spring 18 for spacer 9 and magnetic drive shell 6 contact seal, and press first piston ring 3, second piston ring 19, make the inside high temperature lubricating oil pressure of magnetic drive shell 6 increase, guarantee inside and outside pressure balance, first piston ring 3, second piston ring 19, first dynamic seal subassembly 4 and second dynamic seal subassembly 20 guarantee even when spacer 9 and magnetic drive shell 6 do not contact, still can the absolute sealing spacer 9 inside and outside space.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A magnetic transmission device for a downhole mud generator comprises a main shaft (14), and is characterized in that: the top cover (1) is arranged at the top of the main shaft (14), the upper end of the periphery of the main shaft (14) is connected with the generator shell (5) through a high-speed deep groove ball bearing (24) respectively to form a cavity gap (25), a generator permanent magnet (27) is fixed in the cavity gap (25) and on the inner wall of the generator shell (5), a generator electronic coil (26) is fixed in the cavity gap (25) and on the periphery of the main shaft (14), an inner magnetic rotor (8) is fixed on the periphery of the lower end of the generator shell (5), an isolation sleeve (9) is arranged on the peripheries of the inner magnetic rotor (8) and the generator shell (5), the top wall of the isolation sleeve (9) is fixed with the top cover (1) through bolts, a first compensation spring (2) and a first piston ring (3) are sleeved on the lower side of the top wall of the isolation sleeve (9) respectively and on the periphery of the isolation sleeve (9), two ends of the first compensation spring (2) are tightly attached between the isolation sleeve (9) and the first piston ring (3), the lower end of the inner wall of the isolation sleeve (9) is in interference fit with the main shaft (14), the lower end of the periphery of the isolation sleeve (9) and the position, close to the first piston ring (3), of the periphery of the isolation sleeve (9) are respectively connected with the inner wall of the magnetic drive shell (6) through a high-speed righting bearing (22), an external magnetic rotor (7) is arranged between the inner wall of the magnetic drive shell (6) and the high-speed righting bearing (22), and a turbine (28) is fixed at the top end of the periphery of the magnetic drive shell (6); be equipped with in the casing of magnetic drive shell (6) lower part and pass in and out oil tap hole (10), the terminal surface is connected with main shaft (14) periphery middle and lower section and the top of the bearing ring (11) of periphery thereof respectively through high-speed thrust bearing (21) under magnetic drive shell (6), bearing ring (11) periphery upper end has cup jointed second compensating spring (18) and second piston ring (19) respectively, second compensating spring (18) both ends are hugged closely between second piston ring (19) and bearing ring (11), second piston ring (19) outer lane is connected with magnetic drive shell (6) bottom, bearing ring (11) periphery lower extreme is connected with shell (16) through low-speed main bearing (17), bearing ring (11) bottom is equipped with locking gland nut (13), locking gland nut (13) and main shaft (14) lower extreme threaded connection.
2. The magnetic transmission device for the downhole mud generator according to claim 1, wherein: the magnetic drive shell (6) is filled with high-temperature lubricating oil.
3. The magnetic transmission device for the downhole mud generator according to claim 1, wherein: the first piston ring (3) is internally filled with a first high-speed dynamic sealing assembly (4), and the second piston ring (19) is internally filled with a second high-speed dynamic sealing assembly (20).
4. The magnetic transmission device for the downhole mud generator according to claim 1, wherein: the generator shell (5) is in clearance fit with the main shaft (14), and a dynamic sealing assembly (23) is filled inside the generator shell.
5. The magnetic transmission device for the downhole mud generator according to claim 1, wherein: the inner wall of the bearing ring (11) is in clearance connection with the periphery of the main shaft (14), and a static sealing assembly (15) is filled inside the bearing ring.
6. The magnetic transmission device for the downhole mud generator according to claim 1, wherein: the shell (16) is provided with a pressure relief hole (12) for flowing mud.
7. The magnetic transmission device for the downhole mud generator according to claim 3, wherein: the first high-speed dynamic seal assembly (4), the second high-speed dynamic seal assembly (20) and the dynamic seal assembly (23) are made of rubber rings.
8. The magnetic transmission device for the downhole mud generator according to claim 5, wherein: the static sealing component (15) is made of asbestos products.
9. The magnetic transmission device for the downhole mud generator according to claim 1, wherein: the outer magnetic rotor (7), the inner magnetic rotor (8) and the generator permanent magnet (27) are made of samarium cobalt, the working temperature is 300 ℃, the number of permanent magnet poles of the outer magnetic rotor (7) and the inner magnetic rotor (8) is 8 pairs, and a combined push-pull arrangement mode that NS magnetic poles are alternately arranged is adopted.
10. The magnetic transmission device for the downhole mud generator according to claim 1, wherein: the isolation sleeve (9) is made of a titanium alloy material, the tensile strength is 895MPa, and the magnetic drive shell (6) and the generator shell (5) are made of soft magnetic silicon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120113584.9U CN214196534U (en) | 2021-01-15 | 2021-01-15 | Magnetic transmission device for underground slurry generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120113584.9U CN214196534U (en) | 2021-01-15 | 2021-01-15 | Magnetic transmission device for underground slurry generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214196534U true CN214196534U (en) | 2021-09-14 |
Family
ID=77636561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120113584.9U Expired - Fee Related CN214196534U (en) | 2021-01-15 | 2021-01-15 | Magnetic transmission device for underground slurry generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214196534U (en) |
-
2021
- 2021-01-15 CN CN202120113584.9U patent/CN214196534U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210914 |