CN104806512A - Combinative sealing member applied to high-frequency and high-impact environment of fracturing pump - Google Patents
Combinative sealing member applied to high-frequency and high-impact environment of fracturing pump Download PDFInfo
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- CN104806512A CN104806512A CN201510221637.8A CN201510221637A CN104806512A CN 104806512 A CN104806512 A CN 104806512A CN 201510221637 A CN201510221637 A CN 201510221637A CN 104806512 A CN104806512 A CN 104806512A
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- fracturing pump
- sealing member
- impact environment
- seal body
- high frequency
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Abstract
The invention discloses a combinative sealing member applied to a high-frequency and high-impact environment of a fracturing pump. The combinative sealing member applied to the high-frequency and high-impact environment of the fracturing pump comprises a sealing member body and retainer rings, wherein the retainer rings are arranged on the upper surface and the lower surface of the sealing member body respectively; both the positions, which are located at the inner sides, of the upper surface and the lower surface of the sealing member body are provided with convex shoulder sides; blocking shoulders are formed between the shoulder sides and the sealing member body; all the retainer rings are placed on the blocking shoulders and cooperate with the shoulder sides. The way that the retainer rings are combined with the sealing member body is adopted for the combinative sealing member applied to the high-frequency and high-impact environment of the fracturing pump; each retainer ring is placed between each blocking shoulder and the corresponding shoulder side; when being stressed, the retainer rings are subjected to axial force and the radial force of the compression of the sealing member body at the same time, so that the retainer rings are in contact with a cylinder wall more tightly, and gaps are smaller; the shoulder sides are in contact with a plunger piston directly; the sealing property of a product is better; the sealing member body is less likely to deform, distort and overturn to be extruded; the gnawing damage phenomenon is avoided; the performances of being resistant to high pressure, high frequency and high impact are good. The combinative sealing member applied to the high-frequency and high-impact environment of the fracturing pump is applicable to the field of sealing members.
Description
Technical field
The present invention relates to Sealing field, particularly relate to a kind of Assembled sealer being applied to fracturing pump high frequency HI high impact environment.
Background technique
At present, fracturing pump is that pressure break, acidizing treatment are carried out in oil field, improves the visual plant of oil and gas production, the quality of fracturing pump end bracket enclosed part performance and working life, directly has influence on usability and the quality of fracturing pump.In high frequency HI high impact fracturing pump, the to-and-fro motion speed of plunger up to 400 ~ 500 punchings/point, pressure is up to more than 105MPa, very high to the requirement of fracturing pump end bracket enclosed part.Originally fracturing pump end bracket enclosed part, major part adopts O type rubber ring or O type circle to add back-up ring as Sealing, and these two kinds of Sealings are under high-pressure situations, and easy compressive deformation, causes revealing generation; High voltagehigh frequency work repeatedly, Sealing is easily distorted upset, and rubber is easily extruded in seal clearance and squeeze-out phenomenon occurs, and is easily chewed or bites; The equilibrant force of back-up ring is not enough, and easily cause middle rubber that gap occurs and extrude, seal durability is short, and replacement frequency is large.Therefore, traditional sealing means can not meet usage requirement, urgently a kind of Sealing of applicable high frequency HI high impact environment.
Summary of the invention
For solving the problem, the invention provides a kind of Assembled sealer being applied to fracturing pump high frequency HI high impact environment of anti-torsion anti-extrusion good seal.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Assembled sealer being applied to fracturing pump high frequency HI high impact environment, comprise seal body, seal body is positioned at inner side and is equipped with protruding shoulder side up and down, seal body being positioned at each shoulder side other is L shape shoulder block, each shoulder block is equipped with back-up ring, and back-up ring matches with shoulder side.
Be further used as the improvement of technical solution of the present invention, seal body is also provided with the sealing lip of arc between upper and lower back-up ring.
Be further used as the improvement of technical solution of the present invention, sealing lip maximum outside diameter is greater than each back-up ring external diameter.
Be further used as the improvement of technical solution of the present invention, the middle inside of seal body is provided with arc groove.
Be further used as the improvement of technical solution of the present invention, seal body is interference fit with coordinating of each back-up ring.
Be further used as the improvement of technical solution of the present invention, the sectional shape of seal body is the T-shaped of rotated ninety degrees.
Be further used as the improvement of technical solution of the present invention, the material of back-up ring is engineering plastics, and engineering plastics are teflon stuffing or polyoxymethylene or polyether-ether-ketone or nylon or polyimide or polybenzoate or teflon.
Be further used as the improvement of technical solution of the present invention, teflon stuffing is the copper powder containing 15% ~ 60% mass fraction and/or the glass fibre containing 10% ~ 40% mass fraction and/or containing the PTFE Filled with Carbon Fiber of 10% ~ 40% mass fraction.
Be further used as the improvement of technical solution of the present invention, the shore D type hardness tester of engineering plastics is between 60 ~ 95.
Be further used as the improvement of technical solution of the present invention, the material of seal body is carbon black-filled nitrile butadiene rubber or hydrogenated nitrile-butadiene rubber or fluorine rubber, and the Shao Er A type hardness tester of seal body is between 85 ~ 95.
Beneficial effect of the present invention: the mode that this Assembled sealer being applied to fracturing pump high frequency HI high impact environment adopts back-up ring and seal body to combine, each back-up ring is placed between each shoulder block and shoulder side, time stressed, back-up ring is subject to the radial force of axial force and seal body compression simultaneously, make the contact of back-up ring and casing wall tightr, gap is less, shoulder side directly contacts with plunger, the sealability of product is better, the seal body upset that is not easily distorted is extruded, stopped to chew phenomenon, anti-high voltagehigh frequency high impact property is good.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention overall structure schematic diagram.
Embodiment
Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.Obviously; described embodiment is a part of embodiment of the present invention, instead of whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of protection of the invention.
With reference to Fig. 1, the present invention is a kind of Assembled sealer being applied to fracturing pump high frequency HI high impact environment, comprise seal body 1, seal body 1 is positioned at inner side and is equipped with protruding shoulder side 6 up and down, seal body 1 being positioned at each shoulder side 6 other is L shape shoulder block 5, each shoulder block 5 is equipped with back-up ring 2, and back-up ring 2 matches with shoulder side 6.
The mode that this Assembled sealer being applied to fracturing pump high frequency HI high impact environment adopts back-up ring 2 and seal body 1 to combine, each back-up ring 2 is placed between each shoulder block 5 and shoulder side 6, time stressed, back-up ring 2 is subject to the radial force of axial force and seal body 1 compression simultaneously, make back-up ring 2 tightr with the contact of casing wall, gap is less, shoulder side 6 directly contacts with plunger, the sealability of product is better, seal body 1 upset that is not easily distorted is extruded, stopped to chew phenomenon, anti-high voltagehigh frequency high impact property is good.
As the preferred embodiment of the present invention, seal body 1 is also provided with the sealing lip 4 of arc between upper and lower back-up ring 2.
As the preferred embodiment of the present invention, sealing lip 4 maximum outside diameter is greater than each back-up ring 2 external diameter.
The sealed lip of seal body 1 adopts mild arc shaped surface, adds the area of contact with inwall, improves sealability.
As the preferred embodiment of the present invention, the middle inside of seal body 1 is provided with arc groove 3.
There is an arc groove inner side of seal body 1, reduces the plot ratio of the rubber of seal body 1, prevents rubber excessive compression under high pressure damaged, is also conducive to the installation of product simultaneously; When being under pressure, special arc groove can make rubber produce a radial force to the inside wall of cylinder, and what the seal lip of rubber was contacted with the inside wall of cylinder is tightr, thus improves the sealability of product.
As the preferred embodiment of the present invention, seal body 1 is interference fit with coordinating of each back-up ring 2.
As the preferred embodiment of the present invention, the sectional shape of seal body 1 is the T-shaped of rotated ninety degrees.
As the preferred embodiment of the present invention, the material of back-up ring 2 is engineering plastics, and engineering plastics are teflon stuffing or polyoxymethylene or polyether-ether-ketone or nylon or polyimide or polybenzoate or teflon.
As the preferred embodiment of the present invention, teflon stuffing is the copper powder containing 15% ~ 60% mass fraction and/or the glass fibre containing 10% ~ 40% mass fraction and/or containing the PTFE Filled with Carbon Fiber of 10% ~ 40% mass fraction.
The preferred implementation one of teflon stuffing, teflon stuffing is the copper powder filled polytetrafluoroethylene containing 15% ~ 60% mass fraction.Make product have excellent wear-resistant, creep-resistant property, resistant of high or low temperature, high pressure resistant, wear resistance is the hundreds of times of pure teflon, and adaptive temperature scope is wide.
The preferred implementation two of teflon stuffing, teflon stuffing is the glass fibre filled polytetrafluoroethylene containing 10% ~ 40% mass fraction.Make the gap shrinks between packing, obtained densify, corrosion-resistant, wear-resistant.
The preferred implementation three of teflon stuffing, containing the PTFE Filled with Carbon Fiber of 10% ~ 40% mass fraction.Improve the wear resistance of product, thermal conductivity and chemical resistance, greasy property is good.
The preferred implementation four of teflon stuffing, teflon stuffing is the PTFE Filled with Carbon Fiber comprising the copper powder of 15% ~ 60% mass fraction and the glass fibre of 10% ~ 40% mass fraction and 10% ~ 40% mass fraction.
The preferred implementation five of teflon stuffing, teflon stuffing is comprise the copper powder of 15% ~ 60% mass fraction and the glass fibre filled polytetrafluoroethylene of 10% ~ 40% mass fraction.
The preferred implementation six of teflon stuffing, teflon stuffing is comprise the copper powder of 15% ~ 60% mass fraction and the PTFE Filled with Carbon Fiber of 10% ~ 40% mass fraction.
The preferred implementation seven of teflon stuffing, teflon stuffing is comprise the glass fibre of 10% ~ 40% mass fraction and the PTFE Filled with Carbon Fiber of 10% ~ 40% mass fraction.
As the preferred embodiment of the present invention, the shore D type hardness tester of engineering plastics is between 60 ~ 95.
Back-up ring uses engineering plastics, utilizes the plastics of high hardness, high strength, high-modulus as back-up ring, and anti-voltage resistance good, when high pressure comes, deformation is less likely to occur product, squeeze-out phenomenon can not occur, not easily reveal.
As the preferred embodiment of the present invention, the material of seal body 1 is carbon black-filled nitrile butadiene rubber or hydrogenated nitrile-butadiene rubber or fluorine rubber, and the Shao Er A type hardness tester of seal body 1 is between 85 ~ 95.
Adopt the back-up ring 2 of plastics and the mode of building rubber compound, and the back-up ring 2 of plastics is placed in shoulder block 5 place of rubber, special D type composite structure makes product that distortion upset be less likely to occur, can not chew or bite phenomenon, the rubber that shoulder both sides, side 6 have good stress retentivity directly contacts with plunger both sides, make the sealability of product better, when being subject to extraneous pressure, the back-up ring 2 of plastics not only receives the axial force from rubber, but also be subject to the radial force of rubber extruded, make back-up ring 2 tightr with the contact of inwall, gap is less, product has better sealability, longer service life.
Certainly, the invention is not limited to above-mentioned mode of execution, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (10)
1. one kind is applied to the Assembled sealer of fracturing pump high frequency HI high impact environment, it is characterized in that: comprise seal body (1), described seal body (1) is positioned at inner side and is equipped with protruding shoulder side (6) up and down, described seal body (1) is positioned at the other shoulder block (5) for L shape of each described shoulder side (6), each described shoulder block (5) is equipped with back-up ring (2), and described back-up ring (2) matches with shoulder side (6).
2. be applied to the Assembled sealer of fracturing pump high frequency HI high impact environment according to claim 1, it is characterized in that: described seal body (1) is positioned at the sealing lip (4) being also provided with arc between upper and lower back-up ring (2).
3. be applied to the Assembled sealer of fracturing pump high frequency HI high impact environment according to claim 2, it is characterized in that: described sealing lip (4) maximum outside diameter is greater than each back-up ring (2) external diameter.
4. be applied to the Assembled sealer of fracturing pump high frequency HI high impact environment according to claim 1, it is characterized in that: the middle inside of described seal body (1) is provided with arc groove (3).
5. be applied to the Assembled sealer of fracturing pump high frequency HI high impact environment according to claim 1, it is characterized in that: described seal body (1) is interference fit with coordinating of each described back-up ring (2).
6. be applied to the Assembled sealer of fracturing pump high frequency HI high impact environment according to claim 1, it is characterized in that: the sectional shape of described seal body (1) is the T-shaped of rotated ninety degrees.
7. according to the Assembled sealer being applied to fracturing pump high frequency HI high impact environment in claim 1 ~ 6 described in any one, it is characterized in that: the material of described back-up ring (2) is engineering plastics, described engineering plastics are teflon stuffing or polyoxymethylene or polyether-ether-ketone or nylon or polyimide or polybenzoate or teflon.
8. be applied to the Assembled sealer of fracturing pump high frequency HI high impact environment according to claim 7, it is characterized in that: described teflon stuffing is the copper powder containing 15% ~ 60% mass fraction and/or the glass fibre containing 10% ~ 40% mass fraction and/or containing the PTFE Filled with Carbon Fiber of 10% ~ 40% mass fraction.
9. be applied to the Assembled sealer of fracturing pump high frequency HI high impact environment according to claim 7, it is characterized in that: the shore D type hardness tester of described engineering plastics is between 60 ~ 95.
10. according to the Assembled sealer being applied to fracturing pump high frequency HI high impact environment in claim 1 ~ 6 described in any one, it is characterized in that: the material of described seal body (1) is carbon black-filled nitrile butadiene rubber or hydrogenated nitrile-butadiene rubber or fluorine rubber, and the Shao Er A type hardness tester of described seal body (1) is between 85 ~ 95.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221637.8A CN104806512A (en) | 2015-04-30 | 2015-04-30 | Combinative sealing member applied to high-frequency and high-impact environment of fracturing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510221637.8A CN104806512A (en) | 2015-04-30 | 2015-04-30 | Combinative sealing member applied to high-frequency and high-impact environment of fracturing pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806512A true CN104806512A (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510221637.8A Pending CN104806512A (en) | 2015-04-30 | 2015-04-30 | Combinative sealing member applied to high-frequency and high-impact environment of fracturing pump |
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| Country | Link |
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| CN (1) | CN104806512A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107247A (en) * | 2019-05-30 | 2019-08-09 | 广州加士特密封技术有限公司 | A kind of slip seals structure |
| CN115217973A (en) * | 2022-07-05 | 2022-10-21 | 贵州红阳机械有限责任公司 | T-shaped combined sealing ring |
-
2015
- 2015-04-30 CN CN201510221637.8A patent/CN104806512A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107247A (en) * | 2019-05-30 | 2019-08-09 | 广州加士特密封技术有限公司 | A kind of slip seals structure |
| CN115217973A (en) * | 2022-07-05 | 2022-10-21 | 贵州红阳机械有限责任公司 | T-shaped combined sealing ring |
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| PB01 | Publication | ||
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Application publication date: 20150729 |