CN2869388Y - Equal-wall-thickness stator screw pump for oil production - Google Patents
Equal-wall-thickness stator screw pump for oil production Download PDFInfo
- Publication number
- CN2869388Y CN2869388Y CN 200520021785 CN200520021785U CN2869388Y CN 2869388 Y CN2869388 Y CN 2869388Y CN 200520021785 CN200520021785 CN 200520021785 CN 200520021785 U CN200520021785 U CN 200520021785U CN 2869388 Y CN2869388 Y CN 2869388Y
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- CN
- China
- Prior art keywords
- rubber bushing
- screw pump
- wire netting
- steel pipe
- material layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The thick wall stator screw pump relates to a underground mechanical oil production device and belongs to oil recovery screw pump, which is designed for resolving the technical problems of swelling, dissipating heat and disproportionate stress. The device is not only composed of a steel tube 1, a rubber bushing 4, a hollow rotor 5 nut also a composite material layer 2 and a wire netting 3, wherein the wire netting 3 is fixed to the internal wall of the steel tube 1, the composite material layer 2 is injected between the steel tube 1 and the wire netting 3, the composite material layer 2 and internal wall of the steel tube 1are adhered together, the rubber bushing 4 is adhered to internal wall of the composite material layer 2 and the internal surface of which is double helix form, the external surface of the hollow rotor 5 is meshed with the internal surface of the double helix rubber bushing 4, the thickness of rubber bushing 4 is even. The device is used for production of oil well with advantages of simple structure, low cost, convenient operation and maintenance, best result of heat dissipation, even stress and long operation life of screw pump.
Description
Technical field: the utility model relates to a kind of down-hole mechanical extracting device of oil, belongs to the oil pumping screw pump device.
Background technique: oil pumping screw pump is made up of stator and rotor.At present, known screw pump rotor is the alloyed steel solid screw of chromium plating, and part conventional screw pump also adopts the sleeve rotor of central through bore.Stator is cast in the external cover of steel by rubber and forms, sleeve inner surface is the double helix curved surface, its became uneven, this structure exists three kinds of deficiencies: the one, during screw pump stator work, rotor is transformed into heat energy to the mechanical energy of its friction and impact, and the automatic intensification value of rubbing surface is spent than medium temperature high tens, and this structure heat mainly accumulates in the thickest part of rubber, causes the stator premature failure easily.The 2nd, the swelling when having the conventional stator work of uneven gauge rubber is also inequality, has changed the stator rotor engagement thus, has increased frictional loss, has reduced pump work efficient and working life.The 3rd, in the screw pump operation process, solid rotor is bigger to the inertial impact force of stator rubber, and unbalance stress.
Summary of the invention: the utility model is the oil recovery same wall-thickness stator screw pump that designs for the technical problem that solves swelling, heat radiation and unbalance stress in the existing screw pump stator working procedure.
The utility model is made up of steel pipe, rubber bushing, sleeve rotor, wherein the centre of sleeve rotor is straight-through hollow, it also is made up of composite layer, wire netting, wherein wire netting is fixed on the inwall of steel pipe, and between steel pipe and wire netting, inject composite layer, composite layer and steel pipe inwall bond together, rubber bushing is bonded on the inwall of composite layer, and its internal surface is Double-spiral, the outer surface of sleeve rotor is meshed with the internal surface of Double-spiral rubber bushing, and the rubber bushing thickness evenly equates.
Composite layer of the present utility model and wire netting can also be replaced by low melting metal, and low melting metal casts in the steel pipe, and rubber bushing is bonded on the inwall of low melting metal.
Compared with the prior art the utility model has following advantage:
1), this screw pump stator rubber layer is thin and evenly, the heat dispersion in the time of can improving screw pump work, the heat ageing of slowing down rubber, prolong to some extent than conventional pumps its working life.
2), the ability of rubber layer resistance to deformation in movement process of thin and uniform wall thickness is good, thereby single-stage pressure-bearing height; Can reduce the magnitude of interference between pump stage number and rotor under identical lifting lift condition, its running moment of torsion and system effectiveness aspect are better than the conventional screw pump, thereby improve the service behaviour of pump.
3), screw pump stator with equal wall thickness swell rubber, temperature expand evenly, can guarantee the molded lines of pump preferably, the sealability of pump improves, and makes screw pump have better mechanical property in the running, helps keeping for a long time high pump efficiency, prolongs the life cycle of pump.
4), the application of sleeve rotor not only alleviated weight, also can improve the bearing capacity of rotor, reduces the inertia impact of rotor, the reliability of enhanced system is used the application area that also can expand screw pump with kit.
Description of drawings: Fig. 1 is the utility model structure diagram;
Fig. 2 is the structure diagram that composite layer of the present utility model and wire netting are replaced by low melting metal;
Fig. 3 is a The field sketch of the present utility model.
Embodiment: referring to Fig. 1-Fig. 3, the utility model is by steel pipe 1, rubber bushing 4, sleeve rotor 5 is formed, wherein the centre of sleeve rotor 5 is straight-through hollow, it is also by composite layer 2, wire netting 3 is formed, wherein wire netting 3 is fixed on the inwall of steel pipe 1, and between steel pipe 1 and wire netting 3, inject composite layer 2, composite layer 2 bonds together with steel pipe 1 inwall, rubber bushing 4 is bonded on the inwall of composite layer 2, and its internal surface is Double-spiral, the outer surface of sleeve rotor 5 is meshed with the internal surface of Double-spiral rubber bushing 4, and rubber bushing 4 thickness evenly equate.
Composite layer of the present utility model 2 can also be replaced by low melting metal 6 with wire netting 3, and low melting metal 6 casts in the steel pipe 1, and rubber bushing 4 is bonded on the inwall of low melting metal 6.
Rubber bushing 4 thickness evenly equate, heat radiation, swelling, stressed problem in the time of can improving screw pump stator work like this reach the prolongation screw pump purpose in working life.
The centre of sleeve rotor 5 is straight-through hollow, and this provides well-flushing and pressure test passage, can improve screw bolt well thermal wax washing effect, satisfies the needs of fixed test, has solved the bottleneck problem of restriction screw pump large-scale promotion.
Embodiment one: the utility model 9 by steel pipe 1, mould firmly, stainless steel, rubber bushing 4, sleeve rotor 5 form.At first by working design assembly tubing string, then according to the order of plug 14 tail pipes 13, screen casing 12, wax control device 11, anchor tool 10, the utility model 9, tubing centrilizer 8, oil pipe 7 successively down to the design pump setting depth, by working design assembly roofbolt, drive unit and automatically controlled part are installed, open the machine running.Because the engagement of rotor and stator forms closed chamber in the space, when rotor and stator relatively rotated, closed chamber moved axially, and makes liquid wherein shift to the other end from an end, the realization castering action.In addition, the utility model 9 rotors are hollow-core construction, and well-flushing and pressure test passage are provided, and can improve screw rod well pump thermal wax washing effect, satisfy the needs of fixed test.
Embodiment two: the utility model 9 is made up of steel pipe 1, bronze, rubber bushing 4, sleeve rotor 5.At first by working design assembly tubing string, then according to the order of plug 14 tail pipes 13, screen casing 12, wax control device 11, anchor tool 10, the utility model 9, tubing centrilizer 8, oil pipe 7 successively down to the design pump setting depth, by working design assembly roofbolt, drive unit and automatically controlled part are installed, open the machine running.
Claims (2)
1. oil recovery same wall-thickness stator screw pump, it is by steel pipe (1), rubber bushing (4), sleeve rotor (5) is formed, wherein the centre of sleeve rotor (5) is straight-through hollow, it is characterized in that: it is also by composite layer (2), wire netting (3) is formed, wherein wire netting (3) is fixed on the inwall of steel pipe (1), and between steel pipe (1) and wire netting (3), inject composite layer (2), composite layer (2) bonds together with steel pipe (1) inwall, rubber bushing (4) is bonded on the inwall of composite layer (2), and its internal surface is Double-spiral, the outer surface of sleeve rotor (5) is meshed with the internal surface of Double-spiral rubber bushing (4), and rubber bushing (4) thickness evenly equates.
2. oil recovery same wall-thickness stator screw pump according to claim 1, it is characterized in that described composite layer (2) and wire netting (3) can also be replaced by low melting metal (6), and low melting metal (6) casts in the steel pipe (1), and rubber bushing (4) is bonded on the inwall of low melting metal (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021785 CN2869388Y (en) | 2005-10-19 | 2005-10-19 | Equal-wall-thickness stator screw pump for oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021785 CN2869388Y (en) | 2005-10-19 | 2005-10-19 | Equal-wall-thickness stator screw pump for oil production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869388Y true CN2869388Y (en) | 2007-02-14 |
Family
ID=37724323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021785 Expired - Lifetime CN2869388Y (en) | 2005-10-19 | 2005-10-19 | Equal-wall-thickness stator screw pump for oil production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869388Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705233A (en) * | 2012-06-04 | 2012-10-03 | 中国石油天然气股份有限公司 | Method for oil-extraction equal-wall-thickness screw pump stator and rotor cooperation |
| CN104937270A (en) * | 2013-01-17 | 2015-09-23 | 耐驰泵及系统有限公司 | Rotor for screw pumps and/or eccentric screw pumps, and a screw pump or eccentric screw pump |
| CN106194008A (en) * | 2016-08-30 | 2016-12-07 | 天津立林石油机械有限公司 | Screw rod jump bit |
| CN108050058A (en) * | 2017-12-06 | 2018-05-18 | 中石化石油机械股份有限公司研究院 | Oil-extracting screw pump |
-
2005
- 2005-10-19 CN CN 200520021785 patent/CN2869388Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705233A (en) * | 2012-06-04 | 2012-10-03 | 中国石油天然气股份有限公司 | Method for oil-extraction equal-wall-thickness screw pump stator and rotor cooperation |
| CN104937270A (en) * | 2013-01-17 | 2015-09-23 | 耐驰泵及系统有限公司 | Rotor for screw pumps and/or eccentric screw pumps, and a screw pump or eccentric screw pump |
| CN106194008A (en) * | 2016-08-30 | 2016-12-07 | 天津立林石油机械有限公司 | Screw rod jump bit |
| CN106194008B (en) * | 2016-08-30 | 2018-10-26 | 天津立林石油机械有限公司 | Screw rod jump bit |
| CN108050058A (en) * | 2017-12-06 | 2018-05-18 | 中石化石油机械股份有限公司研究院 | Oil-extracting screw pump |
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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 |
Granted publication date: 20070214 |
|
| EXPY | Termination of patent right or utility model |