CN102384076B - Digital-control reciprocating balancing and damping device for electric submergible pump - Google Patents
Digital-control reciprocating balancing and damping device for electric submergible pump Download PDFInfo
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- CN102384076B CN102384076B CN201110317592.6A CN201110317592A CN102384076B CN 102384076 B CN102384076 B CN 102384076B CN 201110317592 A CN201110317592 A CN 201110317592A CN 102384076 B CN102384076 B CN 102384076B
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- overcoat
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Abstract
The inventions relates to a digital-control reciprocating balancing and damping device for an electric submergible pump. The balancing and damping device is characterized in that the device is provided with a casing, the upper end and the lower end of the casing are respectively provided with internal threads, the lower part of the inner cavity of the casing is provided with a blind end, and a buffering flow hole is formed on the outer wall at the lower part of the casing; and a piston is arranged in the inner cavity of the casing, and a spring is arranged between the piston and the blind end of the casing. The device provided by the invention has the advantages that damage to cables in operation of equipment is remarkably reduced, failure rate is decreased and the service lift of the whole equipment is improved.
Description
Technical field
The invention belongs to a kind of oil field well oil production equipment, particularly a kind of balanced shock-absorbing device of numerical control reciprocating electrical submersible pump.
Background technique
" numerical control reciprocating electrical submersible pump " (patent No. 200410050431.5) with China's independent intellectual property right is adopted by tens of Oil-production Enterprises both at home and abroad, and in production practices, day by day show its energy-saving and environmental protection, remarkable superiority that intelligent remote regulates and controls, enhances productivity, is widely used and reduces costs.But the cable fault occurred in production and application causes removing the increase of well operations and the shortening of pump detection period, has become the restraining factors in whole system working life.Study carefully the reason that it causes cable fault, mainly numerical control reciprocating electrical submersible pump operationally, its mover drives plunger to run downwards, the lower end running to the pump housing when plunger needs to pause several seconds, wait for that pump chamber is full of well liquid, then upwards run, well liquid is given rise to ground, this run action is frequently back and forth carried out.When the lower end that plunger runs to the pump housing needs to pause several seconds time, mover bottom moment is with sudden force bottom contact equilibrium screen casing, the entirety of equipment is caused to shake, cable is extended hang, gather and be worn, so that cable insulation damage causes electric leakage, electric pump is caused not work owing to powering, must well servicing be played, not only cause environmental pollution, and consume expensive maintenance expenses.
Summary of the invention
The object of this invention is to provide a kind of balanced shock-absorbing device of numerical control reciprocating electrical submersible pump, significantly can reduce the damage of cable in equipment operation, reduce rate of fault, improve the working life of whole equipment.
The object of the invention is to be achieved through the following technical solutions: it is characterized in that being provided with overcoat, overcoat upper and lower end arranges internal thread respectively, and the bottom of overcoat inner chamber is cecum, and the outer wall of overcoat bottom arranges buffer stream metering-orifice; Overcoat inner chamber built-up piston, arranges spring between piston and the cecum of overcoat.
Above-mentioned overcoat surface of internal cavity arranges wear-and corrosion-proof metal layer, and the outer circumferential face of piston arranges wear-and corrosion-proof metal layer equally, and spring adopts stainless steel material.
The maximum effective working depth of above-mentioned overcoat inner chamber is 150mm, and overcoat intracavity diameter is 52mm; The diameter of buffer stream metering-orifice is 6-8 mm.
Good effect of the present invention is: the damage that significantly can reduce cable in equipment operation, reduces rate of fault, improves the working life of whole equipment.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present invention.
Embodiment
See Fig. 1; concrete structure of the present invention is as follows: overcoat 4 upper and lower end respectively arranges upper and lower internal thread; the bottom of overcoat 4 inner chamber is cecum; the maximum effective working depth L of overcoat 4 inner chamber is 150mm(and overcoat 4 intracavity bottom move to up stroke top cavity heights to piston), overcoat 4 intracavity diameter R is 52mm; The outer wall of overcoat bottom arranges buffer stream metering-orifice 6, and the diameter of buffer stream metering-orifice 6 is 6-8 mm; Overcoat 4 inner chamber built-up piston 3, arranges spring 5 between piston 3 and the cecum of overcoat 4.
Above-mentioned overcoat 4 surface of internal cavity arranges wear-and corrosion-resistant multicomponent thermochemical treatment metal layer, and the outer circumferential face of piston 3 arranges nickel alloy wear-and corrosion-proof metal layer equally; Spring 5 adopts stainless steel material.To meet the working environment of down-hole harshness, ensure enough working life.
Working principle: during installation, overcoat 4 is connected to the lower end (it is stifled that balance screen casing lower end does not connect original end) of balance screen casing 1 by upper internal thread, when plunger runs down to the lower end of the pump housing, mover 2 bottom apply piston 3, due to the well liquid that overcoat 4 inner chamber is full of, have certain hydraulic pressure, hydraulic pressure is discharged by buffer stream metering-orifice 6 buffering under the pressure of piston 3, within about 1.5 seconds, piston 3 just moves to stroke lower end, the entirety vibrations that the moment impact thus significantly reducing mover 2 bottom causes; When upwards running, piston 3 jack-up is back to up stroke top by spring 5, and meanwhile, well liquid enters overcoat 4 inner chamber by buffer stream metering-orifice 6, until be full of, waits for the descending impact of the next one of electric pump mover 2.The size coupling of overcoat 4 inner chamber amount of capacity and buffer stream metering-orifice 6, the time of determined piston 3 downward runtime buffer under mover effect.
Claims (1)
1. a balanced shock-absorbing device of numerical control reciprocating electrical submersible pump, it is characterized in that being provided with overcoat, overcoat upper and lower end arranges internal thread respectively, and the bottom of overcoat inner chamber is cecum, the outer wall of overcoat bottom arranges buffer stream metering-orifice, and the diameter of buffer stream metering-orifice is 6-8 mm; Overcoat inner chamber built-up piston, arranges spring between piston and the cecum of overcoat; Overcoat is connected to the lower end of balance screen casing by upper internal thread; Overcoat surface of internal cavity arranges wear-and corrosion-proof metal layer, and the outer circumferential face of piston arranges wear-and corrosion-proof metal layer equally, and spring adopts stainless steel material; The maximum effective working depth of overcoat inner chamber is 150mm, and overcoat intracavity diameter is 52mm;
When plunger runs down to the lower end of the pump housing, due to the well liquid that overcoat inner chamber is full of, have certain hydraulic pressure, hydraulic pressure is by the release of buffer stream metering-orifice buffering under the pressure of piston, and the entirety that the moment impact thus significantly reducing mover bottom causes shakes; When upwards running, piston jack-up is back to up stroke top by spring, and meanwhile, well liquid enters overcoat inner chamber by buffer stream metering-orifice, until be full of, waits for the descending impact of the next one of electric pump mover; The size coupling of overcoat inner chamber amount of capacity and buffer stream metering-orifice, determines the time of piston downward runtime buffer under mover effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110317592.6A CN102384076B (en) | 2011-10-19 | 2011-10-19 | Digital-control reciprocating balancing and damping device for electric submergible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110317592.6A CN102384076B (en) | 2011-10-19 | 2011-10-19 | Digital-control reciprocating balancing and damping device for electric submergible pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102384076A CN102384076A (en) | 2012-03-21 |
| CN102384076B true CN102384076B (en) | 2015-04-01 |
Family
ID=45823795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110317592.6A Active CN102384076B (en) | 2011-10-19 | 2011-10-19 | Digital-control reciprocating balancing and damping device for electric submergible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102384076B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2512674Y (en) * | 2001-11-25 | 2002-09-25 | 浙江亚太机电股份有限公司 | Operation mechanism |
| CN2623872Y (en) * | 2003-04-17 | 2004-07-07 | 孙平 | Oil well downhole pumping installation |
| CN1749566A (en) * | 2004-09-17 | 2006-03-22 | 冯春国 | Digital control reciprocating oil submersible electric pump |
| CN201193520Y (en) * | 2008-04-29 | 2009-02-11 | 大庆油田有限责任公司 | Double-measure press-guiding device under well of electric pump |
| CN202280611U (en) * | 2011-10-19 | 2012-06-20 | 沈阳新城石油机械制造有限公司 | Balanced shock-absorbing device of numerical control reciprocating electrical submersible pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1596129A1 (en) * | 1988-12-08 | 1990-09-30 | В.Ф. Францев и В.Г. Дедю | Deep-well sucker-rod pump |
| RU2052662C1 (en) * | 1991-11-22 | 1996-01-20 | Центральная научно-исследовательская лаборатория Производственного объединения "Оренбургнефть" | Oil-well sucker-rod pump |
| US6193483B1 (en) * | 1998-02-19 | 2001-02-27 | Clarence Michael | Full flow tubing stationary valve pump apparatus |
| DE10342157A1 (en) * | 2003-09-12 | 2005-04-07 | Robert Bosch Gmbh | Reciprocating pump especially for hydraulic brake system in vehicle has shut-off component loaded by valve closing spring which acts upon it by mechanical force component orientated at right angles to flow direction through valve |
| DE102004052817A1 (en) * | 2004-11-02 | 2006-05-04 | Robert Bosch Gmbh | piston pump |
-
2011
- 2011-10-19 CN CN201110317592.6A patent/CN102384076B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2512674Y (en) * | 2001-11-25 | 2002-09-25 | 浙江亚太机电股份有限公司 | Operation mechanism |
| CN2623872Y (en) * | 2003-04-17 | 2004-07-07 | 孙平 | Oil well downhole pumping installation |
| CN1749566A (en) * | 2004-09-17 | 2006-03-22 | 冯春国 | Digital control reciprocating oil submersible electric pump |
| CN201193520Y (en) * | 2008-04-29 | 2009-02-11 | 大庆油田有限责任公司 | Double-measure press-guiding device under well of electric pump |
| CN202280611U (en) * | 2011-10-19 | 2012-06-20 | 沈阳新城石油机械制造有限公司 | Balanced shock-absorbing device of numerical control reciprocating electrical submersible pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102384076A (en) | 2012-03-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120321 Assignee: Hunan CRRC Shangqu Electric Co.,Ltd. Assignor: SHENYANG XINCHENG PETROLEUM MACHINERY MANUFACTURING Co.,Ltd. Contract record no.: X2022210000027 Denomination of invention: Balance damping device of numerical control reciprocating electric submersible pump Granted publication date: 20150401 License type: Exclusive License Record date: 20220708 |
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| EE01 | Entry into force of recordation of patent licensing contract |