CN201742182U - Motor stator of self-cooling screw drilling tool with dual-layer shells - Google Patents
Motor stator of self-cooling screw drilling tool with dual-layer shells Download PDFInfo
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- CN201742182U CN201742182U CN2010202639182U CN201020263918U CN201742182U CN 201742182 U CN201742182 U CN 201742182U CN 2010202639182 U CN2010202639182 U CN 2010202639182U CN 201020263918 U CN201020263918 U CN 201020263918U CN 201742182 U CN201742182 U CN 201742182U
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- positioning sleeve
- housing
- drilling tool
- stator
- shell
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Abstract
The utility model provides a motor stator of a self-cooling screw drilling tool with dual-layer shells, aiming at overcoming the defects that during the deep drilling operation, the formation temperature is high, and a rubber lining of the motor stator of the existing screw drilling tool can quickly deform and fail under high-temperature conditions, thus leading a motor to be damaged; the upper part of a shell (11) is fixedly connected with an upper positioning sleeve (2); the lower part of the shell (11) is fixedly connected with a lower positioning sleeve (5); the excircle of the shell (11) is less than the excircles of the upper positioning sleeve (2) and the lower positioning sleeve (5); the upper positioning sleeve (2) and the lower positioning sleeve (5) fixedly connected with the shell (11) are fixed in the middle part of an external shell (1); an axial liquid flow passage (7) is arranged between the excircle of the shell (11) and the internal hole of the external shell (1); and liquid flow through holes (8) are arranged on the upper positioning sleeve (2) and the lower positioning sleeve (5) for communicating the internal chamber of the stator with the axial liquid flow passage (7). The motor stator of the self-cooling screw drilling tool with dual-layer shells has simple and reasonable structure and can be assembled conveniently; and the influence of the high formation temperature on the stator can be effectively reduced, and the service life of the screw drilling tool can be prolonged.
Description
Affiliated technical field
The utility model relates to a kind of screw drilling tool motor stator, especially relates to a kind of self cool double-layer shell screw rod drilling tool motor stator.
Background technology
Helicoid hydraulic motor is the widely used mud motor of oil drilling, mainly comprises by-pass valve assembly, motor assembly, universal drive shaft assembly and driving-shaft assembly, and the composition that from top to bottom is fixedly connected sequentially.Motor is made up of rotor and stator; Stator is made up of housing and rubber bushing, and the outer wall of rubber bushing and housing endoporus are bonding; The endoporus of rubber bushing is the continuous helical line style, and cross section is that radial equipartition is petal-shaped, and petal head number is more than 2 or 2, and housing has the screw thread that is connected with the helicoid hydraulic motor miscellaneous part in two ends up and down.At present, the housing of the helicoid hydraulic motor stator of extensive use is for waiting wall thickness metal circular tube; The rubber bushing cylindrical is column type (seeing accompanying drawing 1), endoporus is the continuous helical line style, in the course of work under the extruding and high pressure effect of rotor, rubber bushing will deform, because the rubber bushing wall thickness do not wait, to be out of shape inhomogeneously, the rubber manufacturing machinery performance of the stator rubber lining under the operating state weakens, influence motor operations efficient, reduce stator useful life.Novel pre-profile formula screw drilling tool motor stator (Chinese utility model patent, publication number CN201219215), process a stator case identical or roughly the same (seeing accompanying drawing 2) in advance at the stator case endoporus with hole shape in the rubber bushing, because the wall thickness of stator rubber lining is basic identical, distortion mechanical performance even, rubber in stressed back is enhanced, improve the screw drilling tool motor operating efficiency, prolong stator useful life.But when in the deep drilling operation, the formation temperature height sometimes can be up to more than 180 ℃, and the heat of down-hole surrounding environment reaches rubber bushing by stator case, and the rubber distortion of losing efficacy under hot conditions causes screw drilling tool motor efficient to reduce until damage.
The utility model content
In order to overcome formation temperature height when the deep drilling operation, the distortion of under hot conditions, losing efficacy of the rubber bushing of existing screw drilling tool motor stator, the deficiency that causes screw drilling tool motor to damage, the utility model provides a kind of self cool double-layer shell screw rod drilling tool motor stator.This self cool double-layer shell screw rod drilling tool motor stator can delay the conduction of stratum heat, effectively prolongs helicoid hydraulic motor useful life.
The technical scheme that its technical problem that solves the utility model adopts is: the stator of self cool double-layer shell screw rod drilling tool motor stator comprises housing and rubber bushing, and rubber bushing is bonded in the housing identical with its outer contour shape.
A technical scheme of the present utility model is, fixedlys connected with last positioning sleeve in the upper end of housing, fixedlys connected with following positioning sleeve in the lower end, and the housing cylindrical is less than last positioning sleeve, the cylindrical of positioning sleeve down; Last positioning sleeve of fixedlying connected with housing and following positioning sleeve are fixedly mounted on the shell body middle part, between the cylindrical of housing and the shell body endoporus axial fluid course are arranged; There is the liquid opening that bore of stator is communicated with axial fluid course on last positioning sleeve and the following positioning sleeve.
Another the technical scheme of the utility model is, housing is installed in the shell body, and the upper/lower terminal of housing is fixedlyed connected with shell body, between cylindrical and the shell body endoporus annular space is arranged in the middle part of the housing; There is the liquid opening that bore of stator is communicated with axial fluid course on the housing.
Housing outer surface in each technical scheme of the utility model has coating, and shell body endoporus, outer round surface have coating; The material of coating is composite aluminium-magnesium-silicate insulating moulding coating, rare earth thermal insulation coatings, application type composition silicate insulating moulding coating.There is the screw thread that is connected with the helicoid hydraulic motor miscellaneous part upper end of shell body, lower end.
The beneficial effects of the utility model are, and are simple and reasonable, are convenient to assembling, and liquid stream, coating etc. can effectively reduce the influence of stratum high-temperature to the stator rubber lining, the useful life of prolongation helicoid hydraulic motor.
Description of drawings
Fig. 1 is the existing wall thickness metal circular tube screw drilling tool motor stator structural representation that waits.
Fig. 2 is a pre existing profile formula screw drilling tool motor stator structural representation.
Fig. 3 is the utility model first example structure schematic diagram.
Fig. 4 is the utility model second example structure schematic diagram.
Among the figure: 1. shell body, 2. go up positioning sleeve, 3. screw thread 5. descends positioning sleeve, 6. inner convex platform, 7. axial fluid course, 8. liquid opening, 9. coating, 11. housings, 12. rubber bushings.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model self cool double-layer shell screw rod drilling tool motor stator, mainly comprise stator, last positioning sleeve 2, following positioning sleeve 5, stator is made up of housing 11 and rubber bushing 12, and rubber bushing 12 can be (referring to the accompanying drawing 2) that waits wall thickness, also can be (referring to the accompanying drawing 1) that does not wait wall thickness.Rubber bushing 12 is bonded in the housing identical or roughly the same with its outer contour shape 11.There is the screw thread 3 that is connected with the helicoid hydraulic motor miscellaneous part upper end of shell body 1, lower end, and normally the upper end is connected with bypass valve housing, and the lower end is connected with the universal drive shaft housing.
The utility model first embodiment (referring to accompanying drawing 3), fixedly connected with last positioning sleeve 2 in the upper end of housing 11, and fixedly connected with following positioning sleeve 5 in the lower end, and housing 11 cylindricals are less than the cylindrical of last positioning sleeve 2, following positioning sleeve 5; The last positioning sleeve 2 and the following positioning sleeve 5 of fixedlying connected with housing 11 are fixedly mounted on shell body 1 middle part, between the cylindrical of housing 11 and shell body 1 endoporus axial fluid course 7 are arranged; There is liquid opening 8 that bore of stator is communicated with axial fluid course 7 on last positioning sleeve 2 and the following positioning sleeve 5.
The utility model second embodiment (referring to accompanying drawing 4), housing 11 is installed in the shell body 1, and the upper/lower terminal of housing 11 is fixedlyed connected with shell body 1, adopts usually to be threaded or welding manner.Between housing 11 middle part cylindricals and shell body 1 endoporus annular space 13 is arranged; There is liquid opening 8 that bore of stator is communicated with axial fluid course 7 on the housing 11.
Liquid opening 8 among the utility model embodiment can be axial, also can be radially.During drillng operation, mud liquid can pass through liquid opening 8 successively, axially fluid course 7, liquid opening 8 flow from top to bottom, make stator effectively be cooled off.
The foregoing description all can realize reducing the purpose of stratum high-temperature to the influence of stator rubber lining, improves the useful life of helicoid hydraulic motor in high-temperature stratum.
In order to guarantee that the utility model self cool double-layer shell screw rod drilling tool motor stator at high temperature during construction operation, reduces the adverse effect of formation temperature to rubber bushing, can be at the inside and outside surface spraying coating 9 of stator case 11 outer surfaces, shell body 1; The coating 9 multiselects material of good heat-insulation effect, as: composite aluminium-magnesium-silicate insulating moulding coating, rare earth thermal insulation coatings, application type composition silicate insulating moulding coating or the like; The thickness of coating 9 is 0.05～2mm, and effect was relatively good when coating 9 thickness were 0.2～1mm usually.
The utility model self cool double-layer shell screw rod drilling tool motor stator, stator case 11 is fixedlyed connected with the endoporus of last positioning sleeve 2, following positioning sleeve 5 usually, adopt connected modes such as screw thread, alignment pin, key (spline, flat key), welding all can, also can adopt the eccentric shaft mode; In the endoporus of last positioning sleeve 2 upper ends, following positioning sleeve 5 lower ends inner convex platform 6 can be arranged, with housing 11 axial restraints.Last positioning sleeve 2, housing 11, down positioning sleeve 5 fixedly connected after, be installed in again between the connecting thread 3 of shell body 1 endoporus upper/lower terminal; Can adopt modes such as being threaded, selling connection, key connection, welding fixedly connected, adopt wherein a kind of or its combination all can.
It should be noted that the foregoing description is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the scope of claims.
Claims (6)
1. self cool double-layer shell screw rod drilling tool motor stator, stator comprises housing and rubber bushing, rubber bushing is bonded in the housing identical with its outer contour shape, it is characterized in that: fixedly connected with last positioning sleeve (2) in the upper end of described housing (11), fixedly connected with following positioning sleeve (5) in the lower end, housing (11) cylindrical is less than the cylindrical of last positioning sleeve (2), following positioning sleeve (5); Last positioning sleeve (2) of fixedlying connected with housing (11) and following positioning sleeve (5) are fixedly mounted on shell body (1) middle part, between the cylindrical of housing (11) and shell body (1) endoporus axial fluid course (7) are arranged; There is liquid opening (8) that bore of stator is communicated with axial fluid course (7) on last positioning sleeve (2) and the following positioning sleeve (5).
2. self cool double-layer shell screw rod drilling tool motor stator, stator comprises housing and rubber bushing, rubber bushing is bonded in the housing identical with its outer contour shape, it is characterized in that: described housing (11) is installed in the shell body (1), the upper/lower terminal of housing (11) is fixedlyed connected with shell body (1), between housing (11) middle part cylindrical and shell body (1) endoporus annular space (13) is arranged; There is liquid opening (8) that bore of stator is communicated with axial fluid course (7) on the housing (11).
3. according to claim 1,2 arbitrary described self cool double-layer shell screw rod drilling tool motor stators, it is characterized in that: described housing (11) outer surface has coating (9); Described shell body (1) bore area has coating (9); Described shell body (1) outer round surface has coating (9).
4. according to the described self cool double-layer shell screw rod drilling tool motor stator of claim 3, it is characterized in that: the material of described coating (9) is composite aluminium-magnesium-silicate insulating moulding coating, rare earth thermal insulation coatings, application type composition silicate insulating moulding coating.
5. according to the described self cool double-layer shell screw rod drilling tool motor stator of claim 10, it is characterized in that: the thickness of described coating (9) is 0.05～2mm.
6. according to claim 1,2 arbitrary described self cool double-layer shell screw rod drilling tool motor stators, it is characterized in that: there is the screw thread (3) that is connected with the helicoid hydraulic motor miscellaneous part upper end, the lower end of described shell body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202639182U CN201742182U (en) | 2010-07-14 | 2010-07-14 | Motor stator of self-cooling screw drilling tool with dual-layer shells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202639182U CN201742182U (en) | 2010-07-14 | 2010-07-14 | Motor stator of self-cooling screw drilling tool with dual-layer shells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201742182U true CN201742182U (en) | 2011-02-09 |
Family
ID=43557461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202639182U Expired - Fee Related CN201742182U (en) | 2010-07-14 | 2010-07-14 | Motor stator of self-cooling screw drilling tool with dual-layer shells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201742182U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882818A (en) * | 2010-07-14 | 2010-11-10 | 中国石油集团渤海石油装备制造有限公司 | Double-layer shell screw rod drilling tool motor stator |
| CN107819363A (en) * | 2016-09-12 | 2018-03-20 | 中国石油天然气集团公司 | Motor stator and its manufacture method |
-
2010
- 2010-07-14 CN CN2010202639182U patent/CN201742182U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882818A (en) * | 2010-07-14 | 2010-11-10 | 中国石油集团渤海石油装备制造有限公司 | Double-layer shell screw rod drilling tool motor stator |
| CN107819363A (en) * | 2016-09-12 | 2018-03-20 | 中国石油天然气集团公司 | Motor stator and its manufacture method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20170714 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |