CN202280611U - Balanced shock-absorbing device of numerical control reciprocating electrical submersible pump - Google Patents
Balanced shock-absorbing device of numerical control reciprocating electrical submersible pump Download PDFInfo
- Publication number
- CN202280611U CN202280611U CN2011203979152U CN201120397915U CN202280611U CN 202280611 U CN202280611 U CN 202280611U CN 2011203979152 U CN2011203979152 U CN 2011203979152U CN 201120397915 U CN201120397915 U CN 201120397915U CN 202280611 U CN202280611 U CN 202280611U
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- CN
- China
- Prior art keywords
- overcoat
- numerical control
- piston
- outer housing
- submersible pump
- Prior art date
- 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 - Fee Related
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Abstract
The utility model discloses a balanced shock-absorbing device of a numerical control reciprocating electrical submersible pump. The device is characterized by being provided with an outer housing; the upper end and the lower end of the outer housing are respectively provided with an internal screw thread; the lower part of the inner cavity of the outer housing is a blind end; the outer wall at the lower part of the outer housing is provided with a buffer flow rate hole; a piston is assembled in the inner cavity of the outer housing; and the blind end between the piston and the outer housing is provided with a spring. The balanced shock-absorbing device of the numerical control reciprocating electrical submersible pump provided by the utility model has the advantages that the damage to a cable in the operation of equipment can be reduced obviously, the failure rate is reduced, and the service life of the whole equipment is prolonged.
Description
Technical field
The utility model belongs to a kind of oil field down-hole oil production equipment, the reciprocal submersible electric pump balancing damping of particularly a kind of numerical control device.
Background technique
" the reciprocal submersible electric pump of numerical control " (patent No. 200410050431.5) with China's independent intellectual property right adopted by oil recovery enterprise of domestic and international tens of family, and in production practices, shows the remarkable superiority that its energy-saving and environmental protection, intelligent remote are regulated and control, enhance productivity, are widely used and reduced cost day by day.But the cable fault that in producing use, occurs causes removing the increase of well operations and the shortening of pump detection period, has become the whole system restraining factors in working life.Study carefully the reason that it causes cable fault; Mainly be the reciprocal submersible electric pump of numerical control when operation, its mover drives plunger and moves downwards, need pause several seconds in the lower end that runs to the pump housing when plunger; Wait for that pump chamber is full of well liquid; Upwards operation gives rise to ground to well liquid then, and this run action is frequently back and forth carried out.When need pausing several seconds the time in the lower end that plunger runs to the pump housing, mover bottom moment is contact equilibrium screen casing bottom with sudden force, causes the integral body vibrations of equipment; Cable extension is hung, gather and be worn, so that cable insulation damages and causes electric leakage; Cause electric pump not work owing to can't supply power; Must play well servicing, not only cause environmental pollution, and the maintenance expenses of consume expensive.
Summary of the invention
The purpose of the utility model provides the reciprocal submersible electric pump balancing damping of a kind of numerical control device, can significantly reduce the damage of cable in the equipment operation, reduces rate of fault, improves the working life of entire equipment.
The purpose of the utility model realizes through following technological scheme: it is characterized in that being provided with overcoat, the overcoat upper and lower end is provided with internal thread respectively, and the bottom of overcoat inner chamber is a cecum, and the buffer stream metering-orifice is set on the outer wall of its external sleeve bottom; Overcoat inner chamber built-up piston is provided with spring between the cecum of piston and overcoat.
Above-mentioned overcoat surface of internal cavity is provided with the wear-and corrosion-proof metal layer, and the outer circumferential face of piston is provided with the wear-and corrosion-proof metal layer equally, and spring adopts stainless steel material.
The maximum effectively working depth of above-mentioned overcoat inner chamber is 150mm, and the overcoat intracavity diameter is 52mm; The diameter of buffer stream metering-orifice is 6-8 mm.
The good effect of the utility model is: can significantly reduce the damage of cable in the equipment operation, reduce rate of fault, improve the working life of entire equipment.
Description of drawings
Fig. 1 is the structure sectional view of the utility model.
Embodiment
See Fig. 1; The concrete structure of the utility model is following: overcoat 4 upper and lower ends respectively are provided with upper and lower internal thread; The bottom of overcoat 4 inner chambers is a cecum; The maximum effectively working depth L of overcoat 4 inner chambers is 150mm (being overcoat 4 intracavity bottoms move to the up stroke top to piston inner chamber height), and overcoat 4 intracavity diameter R are 52mm; Buffer stream metering-orifice 6 is set on the outer wall of its external sleeve bottom, and the diameter of buffer stream metering-orifice 6 is 6-8 mm; Overcoat 4 inner chamber built-up pistons 3 are provided with spring 5 between the cecum of piston 3 and overcoat 4.
Above-mentioned overcoat 4 surface of internal cavity are provided with wear-and corrosion-resistant multicomponent thermochemical treatment metal layer, and the outer circumferential face of piston 3 is provided with nickel alloy wear-and corrosion-proof metal layer equally; Spring 5 adopts stainless steel material.To satisfy the harsh working environment in down-hole, guarantee enough working life.
Working principle: during installation, overcoat 4 is connected the lower end (balance screen casing lower end do not connect original end stifled) of balance screen casing 1 through last internal thread, when plunger runs down to the lower end of the pump housing; Mover 2 bottom apply pistons 3; Because the well liquid that overcoat 4 inner chambers are full of has certain hydraulic pressure, hydraulic pressure discharges through buffer stream metering-orifice L buffering under the pressure of piston 3; Piston 3 just moved to the stroke lower end in about 1.5 seconds, thereby significantly reduced the integral body vibrations that the moment impact of mover 2 bottoms causes; When upwards moving, spring 5 is back to the up stroke top with piston 3 jack-up, and meanwhile, well liquid gets into overcoat 4 inner chambers through buffer stream metering-orifice 6, until being full of, waits for the next descending impact 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 the mover effect.
Claims (3)
1. the reciprocal submersible electric pump balancing damping of a numerical control device is characterized in that being provided with overcoat, and the overcoat upper and lower end is provided with internal thread respectively, and the bottom of overcoat inner chamber is a cecum, and the buffer stream metering-orifice is set on the outer wall of its external sleeve bottom; Overcoat inner chamber built-up piston is provided with spring between the cecum of piston and overcoat.
2. the reciprocal submersible electric pump balancing damping of numerical control according to claim 1 device is characterized in that the overcoat surface of internal cavity is provided with the wear-and corrosion-proof metal layer, and the outer circumferential face of piston is provided with the wear-and corrosion-proof metal layer equally, and spring adopts stainless steel material.
3. the reciprocal submersible electric pump balancing damping of numerical control according to claim 1 device is characterized in that the maximum effectively working depth of overcoat inner chamber is 150mm, and the overcoat intracavity diameter is 52mm; The diameter of buffer stream metering-orifice is 6-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203979152U CN202280611U (en) | 2011-10-19 | 2011-10-19 | Balanced shock-absorbing device of numerical control reciprocating electrical submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203979152U CN202280611U (en) | 2011-10-19 | 2011-10-19 | Balanced shock-absorbing device of numerical control reciprocating electrical submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280611U true CN202280611U (en) | 2012-06-20 |
Family
ID=46226781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203979152U Expired - Fee Related CN202280611U (en) | 2011-10-19 | 2011-10-19 | Balanced shock-absorbing device of numerical control reciprocating electrical submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384076A (en) * | 2011-10-19 | 2012-03-21 | 沈阳新城石油机械制造有限公司 | Digital-control reciprocating balancing and damping device for electric submergible pump |
-
2011
- 2011-10-19 CN CN2011203979152U patent/CN202280611U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384076A (en) * | 2011-10-19 | 2012-03-21 | 沈阳新城石油机械制造有限公司 | Digital-control reciprocating balancing and damping device for electric submergible pump |
| CN102384076B (en) * | 2011-10-19 | 2015-04-01 | 沈阳新城石油机械制造有限公司 | Digital-control reciprocating balancing and damping device for electric submergible pump |
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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: 20120620 Termination date: 20141019 |
|
| EXPY | Termination of patent right or utility model |