CN202260661U - Combined all-metal screw stator - Google Patents
Combined all-metal screw stator Download PDFInfo
- Publication number
- CN202260661U CN202260661U CN2011203771328U CN201120377132U CN202260661U CN 202260661 U CN202260661 U CN 202260661U CN 2011203771328 U CN2011203771328 U CN 2011203771328U CN 201120377132 U CN201120377132 U CN 201120377132U CN 202260661 U CN202260661 U CN 202260661U
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- Prior art keywords
- stator
- metal
- whole
- combined
- permanent joint
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- Expired - Lifetime
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Abstract
The utility model relates to an all-metal screw stator used for a petroleum and natural gas drilling well. The technical scheme is that an internal wall of a stator housing is a smooth cylindrical surface, and the internal wall is provided with keyways; the all-metal stator is formed by combining a plurality of half or one lead metal stator short sections, and an external surface of each metal stator short section is processed so as to form long keys which are used to connect the keyways on the internal surface of the stator housing. Two ends of the all-metal stator are positioned via an upper fixing joint and a lower fixing joint. The upper fixing joint and the lower fixing joint are threadedly connected with upper and lower internal holes in the stator housing. A rotor engages with the all-metal stator to form a sealed cavity. The combined all-metal screw stator has the advantages of high temperature resistance, corrosion resistance, high torque, long service lifetime, simple structure, and the like. The combined all-metal screw stator can improve the working efficiency of a screw drilling tool, and has important engineering application value.
Description
Technical field
The utility model relates to the screw drilling tool motor stator that a kind of oil, gas drilling are used, particularly a kind of combined all-metal screw rod stator.
Background technology
Helicoid hydraulic motor is a mud motor commonly used in oil, the gas drilling engineering; It comprises by-pass valve assembly, motor assembly, universal drive shaft assembly and driving-shaft assembly; Wherein motor assembly is the core component that power is provided for helicoid hydraulic motor, is made up of rotor and two essential parts of stator.Conventional motor stator is made up of stator case and rubber bushing, some technological inferior positions of rubber bushing existence: the bearing capacity of (1) rubber bushing a little less than, be easy to generate leakage in the course of work; (2) heat radiation of rubber bushing is uneven, and thermal hysteresis is serious, makes rubber very easily aging and tear, and reduces the useful life of motor; (3) under the erosion of the gentle oil well hydrocarbon of well, the inhomogeneous meeting of the swelling of rubber bushing changes the stator line style; (4) dimensional stability of existing rubber bushing is relatively poor, and size can differ from half millimeter more than under different well temperature, and great changes will take place to cause the hydraulic characteristic(s) of motor.Along with the appearance of ultradeep well (temperature is high), use the conventional screw drilling tool to be difficult to meet the needs of production in recent years.
Summary of the invention
The purpose of the utility model is shortcomings such as existing screw rod stator bearing capacity is low, non-refractory, poor dimensional stability in order to overcome, and a kind of combined all-metal screw rod stator is provided especially.
For achieving the above object, the utility model addresses the above problem the technical scheme that is adopted and is: a kind of combined all-metal screw rod stator, form by stator case, whole-metal stator pipe nipple, last permanent joint and following permanent joint etc.Its architectural feature is: the stator case inwall is the smooth face of cylinder, has 3～6 keyways on the inwall, is evenly distributed on circumference; Whole-metal stator is made up of the whole-metal stator pipe nipple of a plurality of half helical pitch or a helical pitch; Whole-metal stator pipe nipple outer surface is processed with 3～6 long keys; Be connected with the keyway of stator case inner surface; The whole-metal stator pipe nipple is put into stator case in order, realize the combination and the location of whole-metal stator; Last permanent joint and following permanent joint location are leaned in the whole-metal stator two ends, and last permanent joint is connected with stator case top and bottom endoporus respectively through screw thread with following permanent joint; Rotor and whole-metal stator engagement form annular seal space.
The beneficial effect that the utlity model has is: (1) all-metal screw rod stator is more wear-resisting, corrosion-resistant than common stator; (2) all-metal screw rod stator can adapt to higher working temperature (300 ℃), and is high temperature resistant, ageing-resistant, improved its useful life greatly; Defectives such as the swelling inequality that has occurred when (3) all-metal screw rod stator has been avoided using rubber bushing, change in size; (4) this combined whole-metal stator is combined by a plurality of metal stator pipe nipples, has simplified the processing technology of making all-metal screw rod stator greatly, has reduced production cost.
Description of drawings
Fig. 1 is the cross sectional representation of a kind of combined all-metal screw rod stator of the utility model.
Fig. 2 is the A-A generalized section of a kind of combined all-metal screw rod stator of the utility model shown in Figure 1.
Among the figure: 1. stator case, 2. whole-metal stator pipe nipple, 3. long key, 4. keyway 5. descends permanent joint,
6. go up permanent joint, 7. rotor.
Embodiment
Like Fig. 1, shown in Figure 2, a kind of combined all-metal screw rod stator of the utility model is made up of stator case 1, whole-metal stator pipe nipple 2, last permanent joint 6 and following permanent joint 5 etc.Its architectural feature is: stator case 1 inwall is the smooth face of cylinder, has 3～6 keyways 4 on the inwall, is evenly distributed on circumference; Whole-metal stator is made up of the whole-metal stator pipe nipple 2 of a plurality of half helical pitch or a helical pitch; Whole-metal stator pipe nipple 2 outer surfaces are processed with 3～6 long keys 3; Be connected with the keyway 4 of stator case 1 inner surface; Whole-metal stator pipe nipple 2 is put into stator case 1 in order, realize the combination and the location of whole-metal stator; Last permanent joint 6 and following permanent joint 5 location are leaned in the whole-metal stator two ends, and last permanent joint 6 is connected with stator case 1 top and bottom endoporus respectively through screw thread with following permanent joint 5; Rotor 7 forms annular seal space with the whole-metal stator engagement.This motor stator all is made up of metal, has improved greatly that stator is wear-resisting, corrosion-resistant, resistance and high temperature resistance property; This all-metal screw rod stator is combined by the whole-metal stator pipe nipple 2 of a plurality of half helical pitch or a helical pitch, simplified the technology of making all-metal screw rod stator, and whole-metal stator pipe nipple 2 has interchangeability.
Claims (1)
1. combined all-metal screw rod stator; Form by stator case (1), whole-metal stator pipe nipple (2), last permanent joint (6) and following permanent joint (5) etc.; It is characterized in that: stator case (1) inwall is the smooth face of cylinder; Have 3～6 keyways (4) on the inwall, be evenly distributed on circumference; Whole-metal stator is made up of the whole-metal stator pipe nipple (2) of a plurality of half helical pitch or a helical pitch, and whole-metal stator pipe nipple (2) outer surface is processed with 3～6 long keys (3), is connected with the keyway (4) of stator case (1) inner surface; Last permanent joint (6) and following permanent joint (5) location are leaned in the whole-metal stator two ends, and last permanent joint (6) is connected with stator case (1) top and bottom endoporus respectively through screw thread with following permanent joint (5); Rotor (7) forms annular seal space with the whole-metal stator engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203771328U CN202260661U (en) | 2011-10-09 | 2011-10-09 | Combined all-metal screw stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203771328U CN202260661U (en) | 2011-10-09 | 2011-10-09 | Combined all-metal screw stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202260661U true CN202260661U (en) | 2012-05-30 |
Family
ID=46121845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203771328U Expired - Lifetime CN202260661U (en) | 2011-10-09 | 2011-10-09 | Combined all-metal screw stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202260661U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797416A (en) * | 2012-07-08 | 2012-11-28 | 潍坊华铃柴油机动力有限公司 | Stator for screw drills and machining process of stator |
| CN104018791A (en) * | 2014-05-30 | 2014-09-03 | 盐城华亚石油机械制造有限公司 | Process for machining anti-degumming anti-corrosion heat-proof positive displacement motor drill |
| CN106014199A (en) * | 2016-05-18 | 2016-10-12 | 燕山大学 | Sectional type uniform-wall-thickness screw drilling tool stator |
| CN109915044A (en) * | 2019-03-22 | 2019-06-21 | 中国地质大学（北京） | A kind of assembled helicoid hydraulic motor metal stator and its axial processing and assembling |
| CN113904516A (en) * | 2021-11-02 | 2022-01-07 | 南京泉峰汽车精密技术股份有限公司 | Magnetic speed reducer for hub motor |
-
2011
- 2011-10-09 CN CN2011203771328U patent/CN202260661U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797416A (en) * | 2012-07-08 | 2012-11-28 | 潍坊华铃柴油机动力有限公司 | Stator for screw drills and machining process of stator |
| CN102797416B (en) * | 2012-07-08 | 2015-08-19 | 潍坊华铃柴油机动力有限公司 | A kind of helicoid hydraulic motor stator and processing technology thereof |
| CN104018791A (en) * | 2014-05-30 | 2014-09-03 | 盐城华亚石油机械制造有限公司 | Process for machining anti-degumming anti-corrosion heat-proof positive displacement motor drill |
| CN104018791B (en) * | 2014-05-30 | 2016-04-13 | 盐城华亚石油机械制造有限公司 | The processing technology of the degumming preventing anticorrosion helicoid hydraulic motor of resistance to thermal change |
| CN106014199A (en) * | 2016-05-18 | 2016-10-12 | 燕山大学 | Sectional type uniform-wall-thickness screw drilling tool stator |
| CN109915044A (en) * | 2019-03-22 | 2019-06-21 | 中国地质大学（北京） | A kind of assembled helicoid hydraulic motor metal stator and its axial processing and assembling |
| CN109915044B (en) * | 2019-03-22 | 2023-11-21 | 中国地质大学（北京） | Axial machining and assembling process for metal stator of assembled screw drilling tool |
| CN113904516A (en) * | 2021-11-02 | 2022-01-07 | 南京泉峰汽车精密技术股份有限公司 | Magnetic speed reducer for hub motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |