CN201742176U - Vacuum double-layer shell screw drilling tool motor stator - Google Patents
Vacuum double-layer shell screw drilling tool motor stator Download PDFInfo
- Publication number
- CN201742176U CN201742176U CN2010202639106U CN201020263910U CN201742176U CN 201742176 U CN201742176 U CN 201742176U CN 2010202639106 U CN2010202639106 U CN 2010202639106U CN 201020263910 U CN201020263910 U CN 201020263910U CN 201742176 U CN201742176 U CN 201742176U
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- housing
- drilling tool
- tool motor
- positioning sleeve
- shell body
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Abstract
The utility model discloses a vacuum double-layer shell screw drilling tool motor stator. In order to overcome the deficiencies that stratum temperature is high during deep drilling operation, and the existing screw drilling tool motor stator rubber is quick to age and become invalid to damage the drilling tool motor, the upper end of the shell (11) of utility model is fixedly connected with an upper locating sleeve (2), and the lower end is fixedly connected with a lower locating sleeve (5); the excircle of the shell (11) is smaller than the excircle of the upper locating sleeve (2) and the excircle of the lower locating sleeve (5); the upper locating sleeve (2) and the excircle of the lower locating sleeve (5) fixedly connected with the shell (11) are fixedly installed in the middle of an outer shell (1); a hohlraum (13) is left between the excircle of the shell (11) and the inner bore of the outer shell (1) and is sealed space, and the hohlraum (13) is vacuum or is filled with air or other gases. The utility model has simple and reasonable structure, is convenient to assemble, effectively reduces influence on the stator by the high temperature of the stratum, and prolongs the service life of the screw drilling tool.
Description
Affiliated technical field
The utility model relates to a kind of screw drilling tool motor stator, especially relates to a kind of vacuum type 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 rubber bushing of existing screw drilling tool motor stator lost efficacy distortion soon under hot conditions, the deficiency that causes screw drilling tool motor to damage, the utility model provides a kind of vacuum type double-layer shell screw rod drilling tool motor stator.This vacuum type 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 vacuum type 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 annular space are arranged.
Another 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 housing middle part cylindrical and the shell body endoporus annular space arranged.
In the technique scheme, the annular space between the cylindrical of housing and the shell body endoporus can be a seal cavity, is vacuum or air or other gas in the annular space.When being vacuum in the annular space, housing or/and shell body or/and go up positioning sleeve or/and have on the positioning sleeve down and vacuumize used hole.
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 vacuum, air, coating etc. can effectively reduce the influence of stratum high-temperature to the stator rubber lining, prolong the useful life of 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, 9. coating, 10. hole, 11. housings, 12. rubber bushings, 13. annular spaces.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model vacuum type 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, promptly between the connecting thread 3 of shell body 1 upper/lower terminal, between the cylindrical of housing 11 and shell body 1 endoporus annular space 13 are arranged; Annular space 13 is a seal cavity, is vacuum in the annular space 13, also can be full of air or other gas.
The another embodiment of the utility model (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, between housing 11 middle part cylindricals and shell body 1 endoporus annular space 13 is arranged; Annular space 13 is a seal cavity, is vacuum in the annular space 13, also can be full of air or other gas.
In the foregoing description, when the annular space 13 between housing 11 cylindricals and shell body 1 endoporus is vacuum, housing 11 or/and shell body 1 or/and go up positioning sleeve 2 or/and have on the positioning sleeve 5 down and vacuumize used hole 10.Hole 10 can be axial, also can be radially, exhausts after the vacuum hole 10 sealings are got final product; Simultaneously, last positioning sleeve 2, following positioning sleeve 5 will be carried out sealing with housing 11, when shell body 1 is fixedlyed connected, can adopt rubber seal or other sealing means.
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 vacuum type 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 vacuum type 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 (8)
1. vacuum type 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 annular space (13) are arranged.
2. vacuum type 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.
3. according to claim 1,2 arbitrary described vacuum type double-layer shell screw rod drilling tool motor stators, it is characterized in that: described annular space (13) is a seal cavity, is vacuum or air or other gas in the annular space (13).
4. according to the described vacuum type double-layer shell screw rod drilling tool motor stator of claim 3, it is characterized in that: described annular space (13) when the vacuum, housing (11) or/and shell body (1) or/and go up positioning sleeve (2) or/and have on the positioning sleeve (5) down and vacuumize used hole (10).
5. according to claim 1,2 arbitrary described vacuum type 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).
6. according to the described vacuum type double-layer shell screw rod drilling tool motor stator of claim 5, 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.
7. according to the described vacuum type double-layer shell screw rod drilling tool motor stator of claim 6, it is characterized in that: the thickness of described coating (9) is 0.05～2mm.
8. according to claim 1,2 arbitrary described vacuum type 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 |
|---|---|---|---|
| CN2010202639106U CN201742176U (en) | 2010-07-14 | 2010-07-14 | Vacuum double-layer shell screw drilling tool motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202639106U CN201742176U (en) | 2010-07-14 | 2010-07-14 | Vacuum double-layer shell screw drilling tool motor stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201742176U true CN201742176U (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202639106U Expired - Fee Related CN201742176U (en) | 2010-07-14 | 2010-07-14 | Vacuum double-layer shell screw drilling tool motor stator |
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| Country | Link |
|---|---|
| CN (1) | CN201742176U (en) |
Cited By (1)
| 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 |
-
2010
- 2010-07-14 CN CN2010202639106U patent/CN201742176U/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20170714 |