CN104265620B - The oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device - Google Patents
The oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device Download PDFInfo
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- CN104265620B CN104265620B CN201410454264.4A CN201410454264A CN104265620B CN 104265620 B CN104265620 B CN 104265620B CN 201410454264 A CN201410454264 A CN 201410454264A CN 104265620 B CN104265620 B CN 104265620B
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Abstract
The invention discloses a kind of oil field plunger oil-well pump movable sealing plunger assembly with protection device, relate to oil production equipment. Dynamic Seal combination plunger assembly includes: above compensate set, sealing shroud and lower compensation set. The outer tube wall of sealing shroud is set with many piston rings, O-ring seals is installed in piston ring. When plunger is moved to lower dead center by top dead centre, the upper and lower pressure reduction of plunger fades away, and namely plunger seal section is born pressure and is gradually lowered until disappearing, and seal section is in retracted state, reduces down stroke operating friction, improves the service life of metallic packing ring. Clamping protection set between piston ring and sealing shroud, protection set is thin-walled politef pipe, and politef has certain hardness and good fineness, wearability and toughness, slows down the sealing ring damage to sealing shroud 5, increases the service life.
Description
Technical field
The present invention relates to a kind of for oil field equipment, be specifically related to a kind of oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device.
Background technology
During the lifting of existing oilfield machinery 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 the reciprocating motion rule of fully mated oil pumper, its sealing property is in by subtracting trend; Especially in viscous crude, fluid silt content many, containing in polymer oil well, over time with the increase of abrasion, the wastage of plunger oil-well pump is gradually increased, and causes that the low oil pumper lost work of pump efficiency increases, increases cost for oil production. In order to reduce plunger and and pump barrel between frictional resistance and abrasion, occurred in that in recent years multiple containing software sealing ring, with hydraulic feedback seal structure, and elastic metallic ring seal structure; Have certain effect for improving sealing effectiveness, but there is also following weak point:
1, software hydraulic feedback sealing structure has the disadvantage that, the quick abrasion of software and metal parts, service life is short.
2, elastic metallic ring seals structure, although the sealing problem of pump barrel and plunger can be solved, but metallic packing ring is in the moving process of the upper and lower stroke of plunger, and elastic metallic ring contacts friction all the time with pump barrel, greatly reducing the service life of metallic packing ring, fault rate 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 seal rubber sleeve is caused damage by opening part, reduces the service life of seal rubber sleeve
Summary of the invention:
In order to solve described technical problem; the present invention provides a kind of oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device; when plunger is moved to top dead centre by lower dead center; high pressure in central canal is transferred to gum cover cavity by pressure transmission groove; pressure is transferred to sealing ring by gum cover; expanding and pump barrel blind-mate thus realizing seal section, reducing up stroke hydraulic slip. When plug is moved to lower dead center by top dead centre, the upper and lower pressure reduction of plunger fades away, and namely plunger seal section is born pressure and is gradually lowered disappearance, and seal section is in retracted state, reduces down stroke operating friction, improves the service life of metallic packing ring. Clamp software protection set, it is to avoid sealing ring directly contacts with sealing shroud, slows down the sealing ring damage to sealing shroud, increases the service life.
The present invention is achieved through the following technical solutions: a kind of oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device, and described Dynamic Seal combination plunger assembly includes: be sleeved on the upper compensation set on central canal outer tube wall, sealing shroud and lower compensation set from top to bottom successively. Piston set ring on the outer tube wall of described sealing shroud; Described piston ring is steel annulus, cutting openings groove on the bus of annulus; Piston ring has many, many piston ring gapless successively arrangements; The external cylindrical surface of piston ring and the inwall of pump barrel are sealing surface; Described upper compensation set upper side is connected with central canal by upper fairlead and is locked; The described lower set lower end that compensates is connected with central canal by lower fairlead and is locked. Lower fairlead endoporus installs travelling valve ball and travelling valve seat, and the lower end of lower fairlead connects valve bonnet joint. Described upper and lower compensation is respectively provided with O-ring seals between set and the contact surface of central canal. The position of described central canal 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 middle part takes second place, and the scantling of topmost is the narrowest for the width of many described piston rings; Clamping protection set between described piston ring and sealing shroud, described protection set is software thin-walled circular casing, and described piston ring inwall makes cannelure, installs O-ring seals in described cannelure.
Described protection set is thin-walled politef pipe.
The invention has the beneficial effects as follows:
1, according to oil pumper operation principle, upper and lower stroke adopts different sealing behaves, and the oil pumper upstroke stage has sealing effect merit to be played, down stroke stage sealing ring bounces back, reduce the idle abrasion between sealing ring and pump barrel, the sealing ring loss of reduction, improve service life.
2, movable sealing plunger assembly volume is little, and two ends are provided with connection screw thread; Repacking conventional plunger or assembling movable sealing plunger displacement pump are quite convenient to, and the strong adaptability of its movable sealing plunger assembly, stability are high, generalization is high, cost is low, convenient maintenance and replacement.
3, software protection set is clamped, it is to avoid sealing ring directly contacts with sealing shroud, slows down the sealing ring damage to sealing shroud, increases the service life.
4, piston ring adopts the structure increasing wide degree step by step, when plunger is switched by down stroke to upstroke moment, in order to slow down the impact injury that lower piston endless belt is come, it is achieved the reliability of switching moment integral sealing.
5, two independent O-ring seals of installation on piston ring are often being organized, it is achieved the sealing between metallic piston ring and software protection set under dynamic effect.
6, in upper benefit, between lower compensation set and the contact surface of central canal, it is respectively provided with O-ring seals, improves the upper and lower sealing effectiveness compensated between set and central canal.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is inventive structure schematic diagram.
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, central canal, 1-1, pressure transmission groove, 2, upper fairlead; 3, O-ring seals, 4, upper compensate set, 5, sealing shroud; 6, piston ring, 6-1, open slot, 7, protection set; 8, lower compensation is overlapped; 9, lower fairlead, 10, travelling valve ball, 11, travelling valve seat; 12, valve bonnet joint, 13, pump barrel.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 shows: a kind of oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device, described Dynamic Seal combination plunger assembly includes: be sleeved on the upper compensation set 4 on central canal 1 outer tube wall, sealing shroud 5 and lower compensation set 8 from top to bottom successively. Piston set ring 6 on the outer tube wall of described sealing shroud 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 successively arrangements; The inwall of the external cylindrical surface of piston ring and pump barrel 13 is sealing surface. Described upper set 4 upper ends that compensate are connected with central canal 1 by upper fairlead 2 and are locked; Described lower set 8 lower ends that compensate are connected with central canal 1 by lower fairlead 9 and are locked. Lower fairlead 9 endoporus installs travelling valve ball 10 and travelling valve seat 11, and the lower end of lower fairlead 9 connects valve bonnet joint 12; Arranging O-ring seals 3 between described upper and lower compensation set 4,8 and the contact surface of central canal 1, its effect is to improve the sealing effectiveness between upper and lower compensation set 4,8 and central canal 1. Described central canal 1 and the position of combined plunger component touch make pressure transmission groove 1-1. It is characterized in that: not etc., the width of the piston ring 6 of foot is not maximum, and the width of middle part takes second place, and the scantling of topmost is the narrowest for the width of described many piston rings 6. Its effect is: due to when plunger is switched by down stroke to upstroke moment, maximum at piston ring position under instantaneous pressure and more up more little, in order to slow down the impact injury that lower piston endless belt is come, it is achieved the reliability of switching moment integral sealing. Clamping protection set 7 between described piston ring 6 and sealing shroud 5, described protection set 7 is software thin-walled circular casing, and described piston ring 6 inwall makes cannelure, installs O-ring seals 3 in described cannelure. Installing two O-ring seals 3 on the present embodiment every piston ring 6, the effect of O-ring seals 3 is to realize the sealing effectiveness between the metallic piston ring under dynamic effect and software sealing shroud 5.
The present embodiment protection set 7 is thin-walled politef pipe, and politef has certain hardness and good fineness, wearability and toughness, slows down the sealing ring 6 damage to sealing shroud 5, increases the service life.
Claims (2)
1. an oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device, described Dynamic Seal combination plunger assembly includes: the upper compensation being sleeved on central canal (1) outer tube wall from top to bottom successively overlaps (4), sealing shroud (5) and lower compensation set (8); Piston set ring (6) on the outer tube wall of described sealing shroud (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 successively arrangements; The inwall of the external cylindrical surface of piston ring and pump barrel (13) is sealing surface; Described upper set (4) upper end that compensates is connected by upper fairlead (2) with central canal (1) and locks; Described lower set (8) lower end that compensates is connected by lower fairlead (9) with central canal (1) and locks; Lower fairlead (9) endoporus installs travelling valve ball (10) and travelling valve seat (11), and the lower end of lower fairlead (9) connects valve bonnet joint (12); Described upper and lower compensation is respectively provided with O-ring seals (3) between set (4,8) and the contact surface of central canal (1); The position of described central canal (1) and combined plunger component touch makes pressure transmission groove (1-1); It is characterized in that: not etc., the width of the piston ring (6) of foot is not maximum, and the width of middle part takes second place, and the scantling of topmost is the narrowest for the width of described many piston rings (6); Protection set (7) is clamped between described piston ring (6) and sealing shroud (5); described protection set (7) is software thin-walled circular casing; described piston ring (6) inwall makes cannelure, O-ring seals (3) is installed in described cannelure.
2. oil field according to claim 1 plunger oil-well pump Dynamic Seal combination plunger assembly, it is characterised in that: described protection set (7) is thin-walled politef 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 |
Applications Claiming Priority (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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| CN104265620A CN104265620A (en) | 2015-01-07 |
| CN104265620B true CN104265620B (en) | 2016-06-15 |
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Families Citing this family (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 |
| BR102018003284B1 (en) * | 2017-02-21 | 2021-07-20 | Graco Minnesota Inc. | PISTON ROD FOR A PUMP, PUMP, SPRAYER, AND METHOD FOR REPLACING A WEAR GLOVE |
| 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 |
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| CN104265620A (en) | 2015-01-07 |
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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. |