CN205189809U - Polished rod sealer of oil pump - Google Patents
Polished rod sealer of oil pump Download PDFInfo
- Publication number
- CN205189809U CN205189809U CN201520960310.8U CN201520960310U CN205189809U CN 205189809 U CN205189809 U CN 205189809U CN 201520960310 U CN201520960310 U CN 201520960310U CN 205189809 U CN205189809 U CN 205189809U
- Authority
- CN
- China
- Prior art keywords
- seal body
- polished rod
- cavity
- blowout prevention
- nipple
- 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
- 210000002445 nipple Anatomy 0.000 claims abstract description 39
- 238000012856 packing Methods 0.000 claims abstract description 30
- 230000002265 prevention Effects 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 17
- 238000005086 pumping Methods 0.000 claims description 11
- 239000004519 grease Substances 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 9
- 238000005461 lubrication Methods 0.000 description 4
- 235000014121 butter Nutrition 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to an oil development well head water -tight equipment, in particular to polished rod sealer of oil pump. Including the one -level seal, prevent spouting nipple joint, second grade seal, the one -level seal, prevent spouting nipple joint, second grade seal and be the concentric tubulose body of suit on the polished rod, threaded connection in proper order, the internal diameter of preventing spouting the nipple joint is lighter than the internal diameter of one -level seal and second grade seal, installs the packing in the cavity of one -level seal, second grade seal respectively, prevent spouting and install the preventer on the pipe wall of nipple joint, the preventer include with the cavity of the ascending nozzle stub of slope of preventing spouting nipple joint cavity intercommunication and nozzle stub in end cap, spring, ball seat and the ball sealer installed in proper order. The utility model discloses a sealed, lubricated and set upright or straight to the doublestage of polished rod, still realized that the polished rod takes off the back to the automatic shutoff in the twinkling of an eye of sealed ware, simple safety absolutely simultaneously.
Description
Technical field
The utility model relates to oil exploitation wellhead sealing equipment, particularly a kind of pumping unit rod sealing device.
Background technology
Pumping unit rod sealing device is widely used in and recovers the oil in production, and between polished rod and packing, sealing surface is that the oil film utilizing the crude oil of output to be attached on polished rod lubricates rubbing surface.Because a lot of oil field is in mid-later development phase, the moisture height of product fluid or to go out, oil film is difficult to be attached on polished rod, is in dry type friction for a long time between polished rod and packing, accelerates the wearing and tearing of oil pumping polish rod and packing.Meanwhile, because hole condition constantly changes, make polished rod and packing easily eccentric wear occur, accelerate the wearing and tearing of packing and polished rod; Pump is hung and is constantly deepened, and polished rod bears fluctuating load, if light rod-broken, does not have blowout hookup, causes blowout, oil accident occur.
Chinese patent 201320522531.8 disclosed " a kind of oil-extractor polish-rod lubrication erection device " lubricates wiper block by well head plunger formula dosing pump, nylon and forms, and can realize polished rod continuous lubrication and righting, but not have blowout prevention function.Chinese patent 200810016844.X disclosed " oil pumping machine well head bias-adjusting sealing preventer " is made up of preventer, adjusting deviation device, the moment automatic plugging to sealer after light rod-broken can be realized, unlubricated function, easily causes polished rod and packing, steel ball to dry grind, and damages polished rod.
Utility model content
The utility model object is to provide a kind of pumping unit rod sealing device, solves short, polished rod eccentric wear and the problem of blowout prevention poor performance in packing application life that above-mentioned prior art exists.
The utility model comprises primary seal body, blowout prevention nipple, secondary seal body, primary seal body, blowout prevention nipple, secondary seal body are the concentric tube-shaped body be sleeved on polished rod, be threaded successively, the internal diameter of blowout prevention nipple is less than the internal diameter of primary seal body and secondary seal body, is separately installed with packing in the cavity of primary seal body, secondary seal body; The tube wall of blowout prevention nipple is provided with preventer, in the cavity that preventer comprises the short tube tilted upward and the short tube be communicated with blowout prevention nipple cavity, plug, spring, ball seat and ball sealer is installed successively.
The utility model compared with prior art tool has the following advantages: 1, can carry out two-stage sealing to polished rod, and the packing in replacing primary seal body cavity body is without the need to bleeding off pressure.2, sealer can carry out 4 rightings to the polished rod back and forth run, and prevents down-hole load variations from causing polished rod to swing packing eccentric wear.3, during light rod-broken, the ball sealer in preventer can carry out automatic plugging to sealer rapidly, effectively stops gas stream to be sprayed outward.4, ball sealer is free to rotate with polished rod in ball seat arc corresponding surface, reduces the abrasion of ball sealer and polished rod; By grease nipple to butter of annotating in blowout prevention nipple cavity, can realize, to the continuous lubrication of the polished rod back and forth run and packing, ball sealer rubbing surface, increasing the service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
The utility model comprises primary seal body 1, blowout prevention nipple 2, secondary seal body 3, primary seal body 1, blowout prevention nipple 2, secondary seal body 3 are the concentric tube-shaped body be sleeved on polished rod 4, be threaded successively, the internal diameter of blowout prevention nipple 2 is less than the internal diameter of primary seal body 1 and secondary seal body 3, is separately installed with packing 103,303 in the cavity of primary seal body 1, secondary seal body 3; The tube wall of blowout prevention nipple 2 is provided with preventer, and preventer comprises plug 204, spring 205, ball seat 206 and the ball sealer 207 installed successively in the cavity of the short tube 203 tilted upward and the short tube 203 be communicated with blowout prevention nipple 2 cavity.
The tube wall of described blowout prevention nipple 2 is provided with grease nipple 202, butter can be injected in blowout prevention nipple 2 cavity by grease nipple 202, polished rod 4 is lubricated.
The tubular shell lower end of described primary seal body 1 is threaded with blowout prevention nipple 2, on polished rod 4 in the cavity of the tubular shell of the primary seal body 1 in blowout prevention nipple 2 upper surface, be set with seal receptacle 102, packing 103, pressure ring 104 successively, and fixed by pressure cap 105; Seal receptacle 102 centre bore lower end is provided with the arc sealing surface corresponding with ball sealer 207.
The tubular shell upper end of described secondary seal body 3 is threaded with blowout prevention nipple 2, the lower end of its tubular shell is provided with interior shoulder, in it shoulder and blowout prevention nipple 2 lower end tubular shell cavity in polished rod 4 on be set with packing 303, packing about 303 two ends are set with centering ring 302,304.
Ball seat 206 one end in short tube 203 cavity of described preventer is provided with the arc locating surface corresponding with ball sealer 207.
The utility model can realize following functions: 1, primary seal body 1 and secondary seal body 3 can carry out two-stage sealing to polished rod 4.Can to packing 103 press seal in primary seal body 1 cavity by rotational fastener pressure cap 105.Can to packing 303 press seal in secondary seal body 3 cavity by rotational fastener blowout prevention nipple 2.During normal operation, the packing 103 in primary seal body 1 cavity is compressed, packing 303 in secondary seal body 3 cavity is in slight squeezed state, after the packing 103 in primary seal body 1 cavity weares and teares, tightening the packing 303 in secondary seal body 3 cavity, can the packing 103 in primary seal body 1 cavity be changed without the need to bleeding off pressure.
2, the pressure ring 104 in device, seal receptacle 102, centering ring 302,304 can carry out 4 rightings to the polished rod 4 back and forth run, and prevent down-hole load variations from causing polished rod 4 to swing eccentric wear to packing 103,303.
3, when polished rod 4 breaks de-; the half of polished rod 4 falls in pit shaft; half is proposed outside primary seal body 1 by oil pumper; ball sealer 207 in short tube 203 cavity of preventer loses the stop of polished rod 4; under spring 205 acts on, release short tube 203 cavity, the arc sealing surface that ball sealer 207 is pushed into seal receptacle 102 centre bore lower end corresponding with ball sealer 207 by gas stream is setting, effectively stops gas stream to be sprayed outward; prevent the serious accident because blowout causes, conservation of nature environment.
4, when polished rod 4 pumps, the ball sealer 207 in short tube 203 cavity of preventer is free to rotate with polished rod 4 on ball seat 206 arc corresponding surface, reduces the abrasion of ball sealer 207 and polished rod 4; By butter of annotating in grease nipple 202 pairs of blowout prevention nipple 2 cavitys, can realize, to the lubrication of the polished rod 4 back and forth run and packing 103, packing 303, ball sealer 207 rubbing surface, increasing the service life.
Claims (5)
1. a pumping unit rod sealing device, comprise primary seal body (1), blowout prevention nipple (2), secondary seal body (3), it is characterized in that: primary seal body (1), blowout prevention nipple (2), secondary seal body (3) are the concentric tube-shaped body be sleeved on polished rod (4), be threaded successively, the internal diameter of blowout prevention nipple (2) is less than the internal diameter of primary seal body (1) and secondary seal body (3), is separately installed with packing (103,303) in the cavity of primary seal body (1), secondary seal body (3); The tube wall of blowout prevention nipple (2) is provided with preventer, and preventer comprises plug (204), spring (205), ball seat (206) and the ball sealer (207) installed successively in the cavity of the short tube (203) tilted upward and the short tube (203) be communicated with blowout prevention nipple (2) cavity.
2. a kind of pumping unit rod sealing device according to claim 1, is characterized in that: the tube wall of blowout prevention nipple (2) is provided with grease nipple (202).
3. a kind of pumping unit rod sealing device according to claim 1, it is characterized in that: the tubular shell lower end of primary seal body (1) is threaded with blowout prevention nipple (2), on polished rod (4) in the cavity of the tubular shell of the primary seal body (1) in blowout prevention nipple (2) upper surface, be set with seal receptacle (102), packing (103), pressure ring (104) successively, and fixed by pressure cap (105); Seal receptacle (102) centre bore lower end is provided with the arc sealing surface corresponding with ball sealer (207).
4. a kind of pumping unit rod sealing device according to claim 1, it is characterized in that: the tubular shell upper end of secondary seal body (3) is threaded with blowout prevention nipple (2), the lower end of its tubular shell is provided with interior shoulder, in it shoulder and blowout prevention nipple (2) lower end tubular shell cavity in polished rod (4) on be set with packing (303), packing (303) up and down two ends is set with centering ring (302,304).
5. a kind of pumping unit rod sealing device according to claim 1, is characterized in that: ball seat (206) one end in short tube (203) cavity of preventer is provided with the arc locating surface corresponding with ball sealer (207).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520960310.8U CN205189809U (en) | 2015-11-27 | 2015-11-27 | Polished rod sealer of oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520960310.8U CN205189809U (en) | 2015-11-27 | 2015-11-27 | Polished rod sealer of oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205189809U true CN205189809U (en) | 2016-04-27 |
Family
ID=55782809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520960310.8U Expired - Fee Related CN205189809U (en) | 2015-11-27 | 2015-11-27 | Polished rod sealer of oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205189809U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184582A (en) * | 2018-09-17 | 2019-01-11 | 克拉玛依胜利高原机械有限公司 | The replaceable assembly of split type polished rod, polished rod and polished rod Replacement procedure |
| CN110836102A (en) * | 2018-08-17 | 2020-02-25 | 中国石油化工股份有限公司 | Polished rod blowout preventer |
| CN111021980A (en) * | 2020-02-17 | 2020-04-17 | 辽宁华实技术有限公司 | Double-section automatic blowout prevention well mouth sealer |
-
2015
- 2015-11-27 CN CN201520960310.8U patent/CN205189809U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836102A (en) * | 2018-08-17 | 2020-02-25 | 中国石油化工股份有限公司 | Polished rod blowout preventer |
| CN109184582A (en) * | 2018-09-17 | 2019-01-11 | 克拉玛依胜利高原机械有限公司 | The replaceable assembly of split type polished rod, polished rod and polished rod Replacement procedure |
| CN109184582B (en) * | 2018-09-17 | 2023-09-08 | 克拉玛依胜利高原机械有限公司 | Split polish rod, polish rod replaceable assembly and polish rod replacement process |
| CN111021980A (en) * | 2020-02-17 | 2020-04-17 | 辽宁华实技术有限公司 | Double-section automatic blowout prevention well mouth sealer |
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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 |
Granted publication date: 20160427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |