CN104265620A - Dynamic seal combined plunger assembly with protective device for oil field plunger oil-well pump - Google Patents
Dynamic seal combined plunger assembly with protective device for oil field plunger oil-well pump Download PDFInfo
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- CN104265620A CN104265620A CN201410454264.4A CN201410454264A CN104265620A CN 104265620 A CN104265620 A CN 104265620A CN 201410454264 A CN201410454264 A CN 201410454264A CN 104265620 A CN104265620 A CN 104265620A
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Abstract
The invention discloses a dynamic seal plunger assembly with a protective device for an oil field plunger oil-well pump, and relates to oil extraction equipment. The dynamic seal combined plunger assembly comprises an upper compensation sleeve, a sealing sleeve and a lower compensation sleeve. A plurality of piston rings are arranged on the outer pipe wall of the sealing sleeve in a sleeving mode. An O-shaped sealing ring is arranged in each piston ring. When a plunger moves from the top dead center to the bottom dead center, the up-down pressure difference of the plunger disappears gradually, that is, the pressure borne by the plunger sealing segment is lowered gradually till disappears, the sealing segment is in the retraction state, the down stroke working friction is reduced, and the service life of a metal sealing ring is prolonged. A protective sleeve is arranged between the piston ring and the sealing sleeve in a clamped mode and is a thin-wall polytetrafluoroethene circular tube, the polytetrafluoroethene has certain hardness and good smooth finish, abrasive resistance and toughness, damage, caused by the sealing ring, to the sealing sleeve (5) is decreased, and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of for oil field equipment, be specifically related to the Dynamic Seal combination plunger assembly of a kind of oil field plunger oil-well pump with protective gear.
Background technique
During existing oilfield machinery lifting is recovered the oil, the utilization rate of plunger oil-well pump is in the great majority, and plunger oil-well pump is in oil pumping process, is rigidity friction between plunger and pump barrel, the sealing of plunger oil-well pump can not coordinate the to-and-fro motion rule of pumping unit completely, and its sealability is by subtracting trend; It is special that in viscous crude, fluid, sand content is many, containing in polymer oil well, along with the increase of time and wearing and tearing, the wastage of plunger oil-well pump increases gradually, causes the low pumping unit lost work of pump efficiency to increase, increases cost for oil production.In order to reduce plunger and and pump barrel between surface friction drag and wearing and tearing, occurred multiple containing software seal ring, with hydraulic feedback sealing configuration in recent years, and elastic metallic ring sealing configuration; Raising sealing effect is had certain effect, but also there is following deficiency:
1, the defect of software hydraulic feedback sealing configuration is, the quick abrasion of software and metal parts, working life is short.
2, elastic metallic ring sealing configuration, although the sealing problem of pump barrel and plunger can be solved, metallic packing ring in the moving process of the upper and lower stroke of plunger, elastic metallic ring all the time with pump barrel contact friction, greatly reduce the working life of metallic packing ring, rate of fault is higher.
3, steel piston ring directly contacts between overlapping with colloid seal, and in mechanical movement process, piston ring is opening and closing repeatedly, and opening causes damage to seal rubber sleeve, reduces the working life of seal rubber sleeve
Summary of the invention:
In order to solve the technical problem; the invention provides the Dynamic Seal combination plunger assembly of a kind of oil field plunger oil-well pump with protective gear; when plunger is moved to top dead center by lower dead center; high pressure in center tube is passed to gum cover cavity by pressure transmission groove; pressure is passed to seal ring by gum cover; thus realize seal section expansion and pump barrel blind-mate, reduce up stroke hydraulic slip.When fill in moved to lower dead center by top dead center time, the upper and lower pressure reduction of plunger fades away, and namely plunger seal section is born pressure and reduced disappearance gradually, and seal section is in retracted state, reduces down stroke operating friction, improves the working life of metallic packing ring.Clamp software protecting jacket, avoid seal ring to contact with the direct of stuffing box gland, slow down the damage of seal ring to stuffing box gland, increase the service life.
The present invention is achieved through the following technical solutions: the Dynamic Seal combination plunger assembly of a kind of oil field plunger oil-well pump with protective gear, and described Dynamic Seal combination plunger assembly comprises: be sleeved on upper compensation cover, stuffing box gland and the lower compensation cover on center tube outer tube wall from top to bottom successively.Piston set ring on the outer tube wall of described stuffing box gland; Described piston ring is steel annulus, cutting openings groove on the bus of annulus; Piston ring has many, many piston ring gapless arrangements successively; The external cylindrical surface of piston ring and the inwall of pump barrel are sealing surface; Described upper compensation set upper side to be connected with center tube by upper guide sleeve and to lock; Described lower compensation cover lower end to be connected with center tube by lower guide sleeve and to lock.Lower guide sleeve endoporus installs travelling valve ball and travelling valve seat, the lower end connection valve shield joint of lower guide sleeve.Between described upper and lower compensation cover and the surface of contact of center tube, O-ring seals is set respectively.The position of described center tube and combined plunger component touch makes pressure transmission groove.It is characterized in that: not etc., the width of the piston ring of foot is not maximum, and the width of intermediate portion takes second place, and the scantling of the topmost part is the narrowest for the width of many described piston rings; Clamp protecting jacket between described piston ring and stuffing box gland, described protecting jacket is software thin-walled circular casing, and described piston ring inwall makes circular groove, installs O-ring seals in described circular groove.
Described protecting jacket is thin-walled teflon pipe.
The invention has the beneficial effects as follows:
1, according to pumping unit working principle, upper and lower stroke adopts different sealing behaves, and the pumping unit upstroke stage has sealing effect merit to be played, down stroke stage seal ring retraction, reduce the idle wearing and tearing between seal ring and pump barrel, the seal ring loss of reduction, improve working life.
2, motive sealing plunger assembly volume is little, and two ends are provided with connecting thread; Repacking conventional plunger or assembling motive sealing plunger pump all very convenient, strong adaptability, the stability of its motive sealing plunger assembly are high, generalization is high, cost is low, convenient maintenance and replacement.
3, clamp software protecting jacket, avoid seal ring to contact with the direct of stuffing box gland, slow down the damage of seal ring to stuffing box gland, increase the service life.
4, piston ring adopts the structure increasing wide degree step by step, when plunger is switched to upstroke instantaneously by down stroke, in order to slow down the impact injury come lower piston endless belt, realizes the reliability switching moment integral sealing.
5, two independently O-ring seals are installed often organizing on piston ring, realize the sealing between metallic piston ring under dynamic effect and software protecting jacket.
6, in upper benefit, all arrange O-ring seals between lower compensation cover and the surface of contact of center tube, the upper and lower sealing effect compensated between cover with center tube is improved.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is invention structural representation.
Fig. 2 is the B place partial enlarged drawing of Fig. 1.
Fig. 3 is the A-A profile of Fig. 1.
In figure: 1, center tube, 1-1, pressure transmission groove, 2, upper guide sleeve; 3, O-ring seals, 4, upper compensation cover, 5, stuffing box gland; 6, piston ring, 6-1, opening slot, 7, protecting jacket; 8, lower compensation cover; 9, lower guide sleeve, 10, travelling valve ball, 11, travelling valve seat; 12, valve bonnet joint, 13, pump barrel.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows: the Dynamic Seal combination plunger assembly of a kind of oil field plunger oil-well pump with protective gear, described Dynamic Seal combination plunger assembly comprises: be sleeved on the upper compensation cover 4 on center tube 1 outer tube wall, stuffing box gland 5 and lower compensation cover 8 from top to bottom successively.Piston set ring 6 on the outer tube wall of described stuffing box gland 5; Described piston ring 6 is steel annulus, cutting openings groove 6-1 on the bus of annulus.Piston ring 6 has many, many piston ring 6 gapless arrangements successively; The external cylindrical surface of piston ring and the inwall of pump barrel 13 are sealing surface.Described upper compensation cover 4 upper end to be connected with center tube 1 by upper guide sleeve 2 and to lock; Described lower compensation cover 8 lower end to be connected with center tube 1 by lower guide sleeve 9 and to lock.Lower guide sleeve 9 endoporus installs travelling valve ball 10 and travelling valve seat 11, the lower end connection valve shield joint 12 of lower guide sleeve 9; Arrange O-ring seals 3 between described upper and lower compensation cover 4,8 and the surface of contact of center tube 1, its effect improves the sealing effect between upper and lower compensation cover 4,8 and center tube 1.Described center tube 1 makes pressure transmission groove 1-1 with the position of combined plunger component touch.It is characterized in that: not etc., the width of the piston ring 6 of foot is not maximum, and the width of intermediate portion takes second place, and the scantling of the topmost part is the narrowest for the width of described many piston rings 6.Its effect is: due to when plunger is switched to upstroke instantaneously by down stroke, maximum at piston ring position under instantaneous pressure, and more up less, in order to slow down the impact injury come lower piston endless belt, realizes the reliability switching moment integral sealing.Clamp protecting jacket 7 between described piston ring 6 and stuffing box gland 5, described protecting jacket 7 is software thin-walled circular casing, and described piston ring 6 inwall makes circular groove, installs O-ring seals 3 in described circular groove.The present embodiment every piston ring 6 installs two O-ring seals 3, and the effect of O-ring seals 3 realizes the sealing effect between metallic piston ring under dynamic effect and software stuffing box gland 5.
The present embodiment protecting jacket 7 is thin-walled teflon pipe, and teflon has certain hardness and good degree of finish, wear resistance and toughness, slows down the damage of seal ring 6 pairs of stuffing box glands 5, increases the service life.
Claims (2)
1. the Dynamic Seal combination plunger assembly of oil field plunger oil-well pump with protective gear, described Dynamic Seal combination plunger assembly comprises: be sleeved on upper compensation cover (4) on center tube (1) outer tube wall, stuffing box gland (5) and lower compensation cover (8) from top to bottom successively; Piston set ring (6) on the outer tube wall of described stuffing box gland (5); Described piston ring (6) is steel annulus, cutting openings groove (6-1) on the bus of annulus; Piston ring (6) has many, many piston ring (6) gapless arrangements successively; The inwall of the external cylindrical surface of piston ring and pump barrel (13) is sealing surface; Described upper compensation cover (4) upper end is connected by upper guide sleeve (2) with center tube (1) and locks; Described lower compensation cover (8) lower end is connected by lower guide sleeve (9) with center tube (1) and locks; Lower guide sleeve (9) endoporus installs travelling valve ball (10) and travelling valve seat (11), lower end connection valve shield joint (12) of lower guide sleeve (9); Between described upper and lower compensation cover (4,8) and the surface of contact of center tube (1), O-ring seals (3) is set respectively; Described center tube (1) makes pressure transmission groove (1-1) with the position of combined plunger component touch; It is characterized in that: not etc., the width of the piston ring (6) of foot is not maximum, and the width of intermediate portion takes second place, and the scantling of the topmost part is the narrowest for the width of described many piston rings (6); Protecting jacket (7) is clamped between described piston ring (6) and stuffing box gland (5); described protecting jacket (7) is software thin-walled circular casing; described piston ring (6) inwall makes circular groove, in described circular groove, O-ring seals (3) is installed.
2. oil field according to claim 1 plunger oil-well pump Dynamic Seal combination plunger assembly, is characterized in that: described protecting jacket (7) is thin-walled teflon pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454264.4A CN104265620B (en) | 2014-09-05 | 2014-09-05 | The oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454264.4A CN104265620B (en) | 2014-09-05 | 2014-09-05 | The oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device |
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| Publication Number | Publication Date |
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| CN104265620A true CN104265620A (en) | 2015-01-07 |
| CN104265620B CN104265620B (en) | 2016-06-15 |
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| CN201410454264.4A Active CN104265620B (en) | 2014-09-05 | 2014-09-05 | The oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499622A (en) * | 2015-09-07 | 2017-03-15 | 中国石油天然气股份有限公司 | Piston and oil well pump for oil well pump |
| CN108457852A (en) * | 2017-02-21 | 2018-08-28 | 固瑞克明尼苏达有限公司 | Removable piston rod sleeve for fluid pump |
| US11020761B2 (en) | 2019-01-14 | 2021-06-01 | Graco Minnesota Inc. | Piston rod sleeve mounting for fluid sprayer pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074664A (en) * | 2007-06-19 | 2007-11-21 | 安东石油技术（集团）有限公司 | Antiscaling alloy oil sucking pump |
| CN101382134A (en) * | 2007-09-03 | 2009-03-11 | 常庆发 | Composite bush pump |
| CN101608612A (en) * | 2008-06-18 | 2009-12-23 | 焦在魁 | A kind of double-plunger rotary oil well pump |
| CN204041434U (en) * | 2014-09-05 | 2014-12-24 | 江苏宏业石油装备科技有限公司 | The Dynamic Seal combination plunger assembly of oil field plunger oil-well pump with protective gear |
-
2014
- 2014-09-05 CN CN201410454264.4A patent/CN104265620B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074664A (en) * | 2007-06-19 | 2007-11-21 | 安东石油技术（集团）有限公司 | Antiscaling alloy oil sucking pump |
| CN101382134A (en) * | 2007-09-03 | 2009-03-11 | 常庆发 | Composite bush pump |
| CN101608612A (en) * | 2008-06-18 | 2009-12-23 | 焦在魁 | A kind of double-plunger rotary oil well pump |
| CN204041434U (en) * | 2014-09-05 | 2014-12-24 | 江苏宏业石油装备科技有限公司 | The Dynamic Seal combination plunger assembly of oil field plunger oil-well pump with protective gear |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499622A (en) * | 2015-09-07 | 2017-03-15 | 中国石油天然气股份有限公司 | Piston and oil well pump for oil well pump |
| CN108457852A (en) * | 2017-02-21 | 2018-08-28 | 固瑞克明尼苏达有限公司 | Removable piston rod sleeve for fluid pump |
| US10514030B2 (en) | 2017-02-21 | 2019-12-24 | Graco Minnesota Inc. | Removable piston rod sleeve for fluid pump |
| CN111648953A (en) * | 2017-02-21 | 2020-09-11 | 固瑞克明尼苏达有限公司 | Removable piston rod sleeve for fluid pump |
| US11002271B2 (en) | 2017-02-21 | 2021-05-11 | Graco Minnesota Inc. | Piston rod assembly for a paint pump |
| US11512694B2 (en) | 2017-02-21 | 2022-11-29 | Graco Minnesota Inc. | Piston rod assembly for a fluid pump |
| US11773842B2 (en) | 2017-02-21 | 2023-10-03 | Graco Minnesota Inc. | Removable piston rod sleeve for fluid pump |
| US11891992B2 (en) | 2017-02-21 | 2024-02-06 | Graco Minnesota Inc. | Piston with sleeve for fluid pump |
| US11020761B2 (en) | 2019-01-14 | 2021-06-01 | Graco Minnesota Inc. | Piston rod sleeve mounting for fluid sprayer pump |
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| CN104265620B (en) | 2016-06-15 |
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Effective date of registration: 20161115 Address after: 221000, Hu Fu 114, Wei Town, Xuzhou, Jiangsu, Peixian Patentee after: Xu Chong Address before: 221639 Jiangsu city of Xuzhou province Peixian Wei Town Road on the west side of the lake Patentee before: JIANGSU HONGYE PETROLEUM EQUIPMENT CO., LTD. |