CN106286273A - A kind of combination type hard sealed plunger structure - Google Patents
A kind of combination type hard sealed plunger structure Download PDFInfo
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- CN106286273A CN106286273A CN201510293053.1A CN201510293053A CN106286273A CN 106286273 A CN106286273 A CN 106286273A CN 201510293053 A CN201510293053 A CN 201510293053A CN 106286273 A CN106286273 A CN 106286273A
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Abstract
The invention discloses a kind of combination type hard sealed plunger structure, including floating type flexible sealing assembly and internal flow channel assembly, described internal flow channel assembly includes that the apocenosis passage being sequentially connected with from top to bottom, interior stream heart pipe, enclosed valve are secondary, and described floating type flexible sealing assembly is arranged on the outer wall of interior stream heart pipe.Described floating type flexible sealing assembly is divided into outer layer main seal ring and internal layer pair sealing ring two parts, and secondary sealing ring is arranged on outside interior stream heart pipe, and main seal ring is set in outside secondary sealing ring, and two sealing rings collectively form plunger seal.The present invention makes oil pump plunger piston possess the functions such as self-adapting seal, locally Light deformation, strengthen the plunger adaptation ability to bending pump barrel, it is to avoid plunger and pump barrel because of under high temperature swell increment inconsistent and block embrace, raising oil well pump service behaviour under lower curved section, horizontal segment and worst hot case.
Description
Technical field
The present invention relates to oil well pump, specifically a kind of combination type hard sealed plunger structure.
Background technology
Tradition oil pump plunger piston coordinates realization to seal with monoblock type high accuracy circular cylinder with pump barrel, and in order to ensure preferable sealing effectiveness, plungers length is typically at more than 1m.When lower curved section, net horizontal section work, pump barrel can occur microbend, and longer high-purity plunger piston is easily subject to card in the pump barrel of microbend, cannot smooth and easy move, and causes abrasion to be accelerated, occurs stuck time serious.In vapour driving oil recovery oil well, downhole temperature is higher, and oil pump plunger piston at high temperature deforms with pump barrel, easy locking when swell increment is inharmonious, causes oil well to stop production and examines pump.
Through retrieval, do not find constructed open source literature in the art.
Summary of the invention
It is an object of the invention to provide a kind of combination type hard sealed plunger structure, oil pump plunger piston is made to possess the functions such as self-adapting seal, locally Light deformation, strengthen the plunger adaptation ability to bending pump barrel, it is to avoid plunger and pump barrel because of under high temperature swell increment inconsistent and block embrace, raising oil well pump service behaviour under lower curved section, horizontal segment and worst hot case.
In order to reach above-mentioned purpose, present invention employs following technical scheme, a kind of combination type hard sealed plunger structure, including floating type flexible sealing assembly and internal flow channel assembly, described internal flow channel assembly includes that the apocenosis passage being sequentially connected with from top to bottom, interior stream heart pipe, enclosed valve are secondary, and described floating type flexible sealing assembly is arranged on the outer wall of interior stream heart pipe.
Described floating type flexible sealing assembly is divided into outer layer main seal ring and internal layer pair sealing ring two parts, and secondary sealing ring is arranged on outside interior stream heart pipe, and main seal ring is set in outside secondary sealing ring, and two sealing rings collectively form plunger seal.
Described major and minor sealing ring is the pipe nipple ring that multiple single-unit length is shorter；Main seal ring is a kind of helicoidal structure, and end face and periphery precision all reach plunger periphery equal accuracy grade, and inner headed face and the side contacted with main seal ring of secondary sealing ring have same precision.
Described major and minor sealing interannular realizes sealing by axial compressive force jam-packed contact surface, seals with gap fiting mode between main seal ring and pump barrel, secondary sealing ring and interior stream heart pipe；After secondary sealing ring is assembled to interior stream heart pipe outside, between each ring, form multiple compartment；Main seal ring is set in compartment, is positioned at outside secondary sealing ring, and compartment axial length is more than main seal ring overall length, and external diameter is less than main seal ring internal diameter, and main seal ring can move axially in compartment, also can radial deflection.
Described internal flow channel assembly one end collocation single current valve body, the other end is power traction mechanism spare interface.
Compared to prior art, the method have the advantages that
1, this plunger surface has along plunger axis bending, along plunger radial reducing, the ability of skew, and for the situation of lower curved section pump barrel deformation, more existing monoblock type plunger has more preferable adaptability；
2, this plunger surface possesses reducing ability, and when oil well pump can be avoided to work in high temperature environments, pump barrel and plunger swell increment be inconsistent and the probability of jam, compared with the prior art, and range of application and better reliability；
3, this piston element can all use metal manufacture, more current nonmetallic materials Flexible plunger to have more preferable resistance to gentle anti-wear performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of combination type hard sealed plunger structure of the present invention.
In figure: apocenosis passage 1, secondary sealing ring 2, main seal ring 3, interior stream heart pipe 4, secondary sealing ring 5, secondary sealing ring 6, enclosed valve pair 7.
Detailed description of the invention
Detailed description for the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides reference and purposes of discussion, is not used for being any limitation as the present invention.
According to Fig. 1, a kind of combination type hard sealed plunger structure, it is made up of floating type flexible seal portion and internal flow channel two parts.Floating type flexible seal portion is responsible between plunger and pump barrel sealing, and internal flow channel part then plays the floating type flexible seal portion of carrying, bears fluid column load in oil pipe, constitutes the effect of fluid course.
The structure of floating type flexible seal portion is divided into outer layer main seal ring and internal layer pair sealing ring two parts.Secondary sealing ring is arranged on outside internal flow channel, and main seal ring is set in outside secondary sealing ring, and the two collectively forms plunger seal.Major and minor sealing ring is the pipe nipple that multiple single-unit length is shorter.Main seal ring is a kind of helicoidal structure, has high-precision end face and periphery, has the sealing effectiveness of monoblock type plunger under axial compressive force effect, can be expanding under intrinsic pressure effect, undergauge under external force.Inner headed face and the side contacted with main seal ring of secondary sealing ring have higher precision equally.Major and minor sealing interannular realizes sealing by axial compressive force jam-packed contact surface, seals with gap fiting mode between main seal ring and pump barrel, secondary sealing ring and internal flow channel.After secondary sealing ring is assembled to internal flow channel outside, between each ring, form multiple compartment.Main seal ring is set in compartment, is positioned at outside secondary sealing ring, and compartment axial length is more than main seal ring overall length, and external diameter is less than main seal ring internal diameter, and main seal ring is axially movable in compartment, it is possible to radial deflection.Major and minor packing ring combination has material filling type sealing effectiveness, is effectively sealed by annular space between internal flow channel and pump barrel.Plunger entirety loads after pump barrel, secondary sealing ring not with pump barrel contact internal walls, only play separate main seal ring, control its axial movement value, be responsible for each compartment in the effect that seals between main seal ring and internal flow channel.
Carrying flexible seal portion, one end collocation single current valve body outside internal flow channel, the other end is the power traction mechanism spare interfaces such as connecting with pumping rod, and its body bears fluid column load in oil pipe, internal as fluid course.
This Combined plunger piston all uses hardware to constitute, and form matched in clearance with hard sealing surface between pump barrel, under oil pipe intrinsic pressure power effect, main seal ring spreading is adjacent to pump barrel inwall and reduces fit clearance, axially compress with secondary sealing ring and seal, secondary sealing ring seals with matched in clearance with internal flow channel, thus realizes the sealing function of conventional plunger.When being operated in lower curved section, due to main seal portion can with reducing, energy is radially displaceable and length is shorter, when by pump barrel bending section, just can preferably adapt to pump barrel internal via shape, make plunger have " flexible ", the flexible characteristic of " reducing " on the whole, reduce jam probability；In high temperature environments, reducing ability can avoid plunger and pump barrel locking because swell increment is inconsistent.For on the whole, this compound mode can make plunger better adapt to the work under lower curved section and hot environment.
Interior stream heart pipe 4 is the major embodiment of the internal flow channel described in Summary, and it collectively forms necessity, more complete internal flow channel function with enclosed valve pair 7, apocenosis passage 1.Secondary sealing ring 6 is the main forms of secondary sealing ring described in Summary, secondary sealing ring 2 is form of expression when being arranged on end of the secondary sealing ring described in Summary, and secondary sealing ring 5 is the adjustment part being only used for regulating " compartment " length arranged to optimize the processing technique of secondary sealing ring described in Summary.Main seal ring 3 is the main seal ring described in Summary, is whole section of form shown in figure, it is possible to is designed with multiple shorter pipe nipple concatenation and uses to strengthen flexible effect.
Pair sealing ring 2, secondary sealing ring 5, main seal ring 3, secondary sealing ring 6 are installed successively to interior stream heart pipe 4, and enclosed valve secondary 7 and apocenosis passage 1 are installed at interior stream heart pipe 4 two ends, i.e. can obtain the flexible combination formula sealed plunger with deformability, plunger is loaded corresponding pump barrel and i.e. forms oil well pump finished product, can come into operation after verification test.
This structure is applied to carry out plunger design manufacture, in oil well pump, when being operated in lower curved section, due to main seal portion can with reducing, energy is radially displaceable and length is shorter, just pump barrel internal via shape can be preferably adapted to when by pump barrel bending section, make plunger have " flexible ", the flexible characteristic of " reducing " on the whole, reduce jam probability；In high temperature environments, reducing ability can avoid plunger and pump barrel locking because swell increment is inconsistent.For on the whole, this compound mode can make plunger better adapt to the work under lower curved section and hot environment, improves oil well pump range of application and reliability, reduces exploitation unit well maintenance and puts into.
The foregoing is only presently preferred embodiments of the present invention, be not used to limit the scope of the claims of the present invention, other use the equivalent of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (5)
1. a combination type hard sealed plunger structure, it is characterized in that, including floating type flexible sealing assembly and internal flow channel assembly, described internal flow channel assembly includes that the apocenosis passage being sequentially connected with from top to bottom, interior stream heart pipe, enclosed valve are secondary, and described floating type flexible sealing assembly is arranged on the outer wall of interior stream heart pipe.
A kind of combination type hard sealed plunger structure the most according to claim 1, it is characterized in that, described floating type flexible sealing assembly is divided into outer layer main seal ring and internal layer pair sealing ring two parts, secondary sealing ring is arranged on outside interior stream heart pipe, main seal ring is set in outside secondary sealing ring, and two sealing rings collectively form plunger seal.
A kind of combination type hard sealed plunger structure the most according to claim 2, it is characterised in that described major and minor sealing ring is the pipe nipple ring that multiple single-unit length is shorter；Main seal ring is a kind of helicoidal structure, and end face and periphery precision all reach plunger periphery equal accuracy grade, and inner headed face and the side contacted with main seal ring of secondary sealing ring have same precision.
A kind of combination type hard sealed plunger structure the most according to claim 1, it is characterised in that described major and minor sealing interannular realizes sealing by axial compressive force jam-packed contact surface, seals with gap fiting mode between main seal ring and pump barrel, secondary sealing ring and interior stream heart pipe；After secondary sealing ring is assembled to interior stream heart pipe outside, between each ring, form multiple compartment；Main seal ring is set in compartment, is positioned at outside secondary sealing ring, and compartment axial length is more than main seal ring overall length, and external diameter is less than main seal ring internal diameter, and main seal ring can move axially in compartment, also can radial deflection.
A kind of combination type hard sealed plunger structure the most according to claim 1, it is characterised in that described internal flow channel assembly one end collocation single current valve body, the other end is power traction mechanism spare interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293053.1A CN106286273A (en) | 2015-06-01 | 2015-06-01 | A kind of combination type hard sealed plunger structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293053.1A CN106286273A (en) | 2015-06-01 | 2015-06-01 | A kind of combination type hard sealed plunger structure |
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| CN106286273A true CN106286273A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510293053.1A Pending CN106286273A (en) | 2015-06-01 | 2015-06-01 | A kind of combination type hard sealed plunger structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320859A (en) * | 2022-01-18 | 2022-04-12 | 东北石油大学 | Flexible oil-well pump of valves tracking motion type horizontal well |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6971856B1 (en) * | 2001-08-03 | 2005-12-06 | Paal, L.L.C. | Plunger for well casings and other tubulars |
| CN201554631U (en) * | 2009-10-10 | 2010-08-18 | 中船重工中南装备有限责任公司 | Combined plunger anti-seize oil well pump |
| CN201679697U (en) * | 2009-11-16 | 2010-12-22 | 黑龙江省嘉信石化机械有限公司 | Long-acting compound seal plunger defueling pump |
| CN201778983U (en) * | 2010-08-20 | 2011-03-30 | 中国石油天然气股份有限公司 | Flexible metal oil-well pump |
| CN204704100U (en) * | 2015-06-01 | 2015-10-14 | 中国石油化工股份有限公司 | The hard sealed plunger structure of combined type |
-
2015
- 2015-06-01 CN CN201510293053.1A patent/CN106286273A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6971856B1 (en) * | 2001-08-03 | 2005-12-06 | Paal, L.L.C. | Plunger for well casings and other tubulars |
| CN201554631U (en) * | 2009-10-10 | 2010-08-18 | 中船重工中南装备有限责任公司 | Combined plunger anti-seize oil well pump |
| CN201679697U (en) * | 2009-11-16 | 2010-12-22 | 黑龙江省嘉信石化机械有限公司 | Long-acting compound seal plunger defueling pump |
| CN201778983U (en) * | 2010-08-20 | 2011-03-30 | 中国石油天然气股份有限公司 | Flexible metal oil-well pump |
| CN204704100U (en) * | 2015-06-01 | 2015-10-14 | 中国石油化工股份有限公司 | The hard sealed plunger structure of combined type |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320859A (en) * | 2022-01-18 | 2022-04-12 | 东北石油大学 | Flexible oil-well pump of valves tracking motion type horizontal well |
| CN114320859B (en) * | 2022-01-18 | 2023-09-01 | 东北石油大学 | Valve group tracking movement type flexible oil pump for horizontal well |
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Application publication date: 20170104 |
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