CN204041436U - Oil field plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove - Google Patents
Oil field plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove Download PDFInfo
- Publication number
- CN204041436U CN204041436U CN201420514089.9U CN201420514089U CN204041436U CN 204041436 U CN204041436 U CN 204041436U CN 201420514089 U CN201420514089 U CN 201420514089U CN 204041436 U CN204041436 U CN 204041436U
- Authority
- CN
- China
- Prior art keywords
- plunger
- piston ring
- oil
- ring
- well 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
Links
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a kind of oil field plunger oil-well pump piston ring with the motive sealing plunger of shaped openings groove, relate to oil production equipment.Dynamic Seal combination plunger assembly comprises: above compensate cover, stuffing box gland and lower compensation cover.The outer tube wall of stuffing box gland is set with many piston rings, in piston ring, O-ring seals is installed.When plunger is moved to lower dead center by top dead center, the upper and lower pressure reduction of plunger fades away, and namely plunger seal section is born pressure and reduced gradually until disappear, and seal section is in retracted state, reduces down stroke operating friction, improves the working life of metallic packing ring.The effect of involute shape notch increases notch length, reduces leakage of oil amount, and sealing is better.The effect of fan-shaped notch is that to be conducive to the open amount of opening slot unrestricted, after piston ring Long-Time Service wearing and tearing simultaneously, gradually opens gradually linear notch and is not destroyed.Opening slot circumferencial direction dislocation 180 degree on adjacent two piston rings, increases the sealing effect of seal ring opening.
Description
Technical field
The utility model relates to a kind of for oil field equipment, is specifically related to the motive sealing plunger of a kind of oil field plunger oil-well pump piston ring with shaped openings groove
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, 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 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 utility model provides a kind of oil field plunger oil-well pump piston ring with the motive sealing plunger of shaped openings groove, 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.
The utility model is achieved through the following technical solutions: a kind of oil field plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove, and described motive sealing plunger 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.The position of described center tube and combined plunger component touch makes pressure transmission groove.It is characterized in that: described piston ring inwall makes circular groove, in described circular groove, O-ring seals is installed.Described opening slot along piston ring circumferencial direction in opening gradually linear notch.The outer end of described opening slot is fan-shaped notch.Opening slot circumferencial direction dislocation 180 degree on described adjacent two piston rings.
The beneficial effects of the utility model are:
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.
The effect of 2, gradually opening gradually linear notch increases notch length, reduces leakage of oil amount, and sealing is better.The effect of fan-shaped notch is that to be conducive to the open amount of opening slot unrestricted, after piston ring Long-Time Service wearing and tearing simultaneously, gradually opens gradually linear notch and is not destroyed.
3, the opening slot circumferencial direction dislocation 180 degree on adjacent two piston rings, increases the sealing effect of seal ring opening.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is model utility structural representation.
Fig. 2 is the B place partial enlarged drawing of Fig. 1.
The A-A profile of Fig. 3 Fig. 1.
In figure: 1, center tube, 2, upper guide sleeve, 3, O-ring seals, 4, upper compensation cover, 5, stuffing box gland, 6, piston ring, 6-1, opening slot, 6-2, fan-shaped notch, 7, pressure transmission groove, 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: a kind of oil field plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove, and described motive sealing plunger 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 rectangle annulus, cutting openings groove 6-1 on the bus of rectangle 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.Between described upper and lower compensation cover 4,8 and the surface of contact of center tube 1, O-ring seals 3 is set; 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.Described center tube 1 makes pressure transmission groove 7 with the position of combined plunger component touch.It is characterized in that: described piston ring 6 inwall makes circular groove, in described circular groove, O-ring seals 3 is installed.Described opening slot 6-1 along piston ring circumferencial direction in opening gradually linear notch.The effect of opening gradually linear notch increases notch length, reduces leakage of oil amount, and sealing is better.
The outer end of described opening slot 6-1 is fan-shaped notch 6-2.The effect of fan-shaped notch be conducive to opening slot to open open amount unrestricted, after piston ring Long-Time Service wearing and tearing simultaneously, gradually open gradually linear notch and be not destroyed.
Opening slot 6-1 circumferencial direction dislocation 180 degree on described adjacent two piston rings 6; Its effect is the sealing effect increasing seal ring opening.
Claims (3)
1. plunger oil-well pump piston ring in oil field is with a motive sealing plunger for shaped openings groove, and described motive sealing plunger 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; Described center tube (1) makes pressure transmission groove (7) with the position of combined plunger component touch; It is characterized in that: described piston ring (6) inwall makes circular groove, in described circular groove, O-ring seals (3) is installed; Described opening slot (6-1) along piston ring circumferencial direction in opening gradually linear notch.
2. oil field according to claim 1 plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove, it is characterized in that: the outer end of described opening slot (6-1) is fan-shaped notch (6-2).
3. oil field according to claim 1 plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove, it is characterized in that: opening slot (6-1) the circumferencial direction dislocation 180 degree on described adjacent two piston rings (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420514089.9U CN204041436U (en) | 2014-09-05 | 2014-09-05 | Oil field plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420514089.9U CN204041436U (en) | 2014-09-05 | 2014-09-05 | Oil field plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041436U true CN204041436U (en) | 2014-12-24 |
Family
ID=52242106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420514089.9U Expired - Fee Related CN204041436U (en) | 2014-09-05 | 2014-09-05 | Oil field plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235004A (en) * | 2014-09-05 | 2014-12-24 | 江苏宏业石油装备科技有限公司 | Dynamic seal plunger with abnormal-shaped open slot of piston ring for oil field plunger oil well pump |
-
2014
- 2014-09-05 CN CN201420514089.9U patent/CN204041436U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235004A (en) * | 2014-09-05 | 2014-12-24 | 江苏宏业石油装备科技有限公司 | Dynamic seal plunger with abnormal-shaped open slot of piston ring for oil field plunger oil well pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204164550U (en) | A kind of pipeline extension device of triple seal structure | |
| CN104265620B (en) | The oil field plunger oil-well pump Dynamic Seal combination plunger assembly with protection device | |
| CN204041436U (en) | Oil field plunger oil-well pump piston ring is with the motive sealing plunger of shaped openings groove | |
| CN104695888A (en) | Automatic backflow wellhead sealer | |
| CN104196714B (en) | Oil field plunger oil-well pump Dynamic Seal combination plunger assembly | |
| CN203214880U (en) | Embedded combined sealing device | |
| CN204041434U (en) | The Dynamic Seal combination plunger assembly of oil field plunger oil-well pump with protective gear | |
| CN204041435U (en) | Oil field plunger oil-well pump Dynamic Seal combination plunger assembly | |
| CN104235004B (en) | Oil field plunger oil-well pump piston ring is with the movable sealing plunger of shaped openings groove | |
| CN204532133U (en) | A kind of piston type intelligent conversion joint | |
| CN203856708U (en) | Plunger packing protector for plunger pump | |
| CN205503989U (en) | Hydro -cylinder compensation formula sliding seal structure | |
| CN201184171Y (en) | Bias-wearing-proof pumping unit | |
| CN205331119U (en) | Hydrocylinder | |
| CN104895521B (en) | Coal bed gas well Operating Pressure is equipped | |
| CN212356376U (en) | Hydraulic jack | |
| CN204941896U (en) | A kind of high pressure reciprocating pump fluid end structure | |
| CN203641155U (en) | Sealing and lubricating structure of cylinder and cylinder | |
| CN203499965U (en) | Double-layer self-sealing overlength stroke oil well pump | |
| CN201165969Y (en) | PG pump hydraulic end leakage-free packer | |
| CN111706502A (en) | Sealing device for high-pressure plunger water injection pump packing of offshore oil platform | |
| CN206461467U (en) | A kind of sand control piston for oil immersion line motor | |
| CN205806060U (en) | A kind of development machine guide hydraulic oil cylinder | |
| CN204754851U (en) | Wear -resisting packing box of tuningout | |
| CN204200754U (en) | Stacker-reclaimer pitching oil cylinder |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20160905 |