CN202417399U - Pumping unit well mouth sealing device assembly - Google Patents
Pumping unit well mouth sealing device assembly Download PDFInfo
- Publication number
- CN202417399U CN202417399U CN2012200576120U CN201220057612U CN202417399U CN 202417399 U CN202417399 U CN 202417399U CN 2012200576120 U CN2012200576120 U CN 2012200576120U CN 201220057612 U CN201220057612 U CN 201220057612U CN 202417399 U CN202417399 U CN 202417399U
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- polished rod
- seal box
- sleeve pipe
- sealing device
- positioning
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Abstract
The utility model relates to a pumping unit well mouth sealing device assembly, which mainly solves the problem that the existing well mouth packing box has poor tightness, and loss, polish rod corrosion and eccentric wear are easily generated. The pumping unit well mouth sealing device assembly is characterized in that the lower part of a casing pipe locating joint (2) is connected with a polish rod casing pipe (7) by a casing pipe connecting joint (5); the bottom of a first-level seal box (11) is connected with a second-level seal box (17); a sealing body (27) of which the inside is a cavity is arranged in the second-level seal box (17); lubricating oil is filled in the sealing body (27); the upper part of a bulb (19) is in threaded connection with the second-level seal box (17); the lower part of a bulb pressing cap (20) is connected with an upper-rotating locating plate (23) by a transition pup joint (22); and the bottom of the upper rotating locating plate (23) is provided with a lower rotating locating plate (24). The pumping unit well mouth sealing device assembly has the characteristics of good tightness, no loss and eccentric wear resistance, and friction resistance is lowered.
Description
Technical field
The utility model relates to the mechanical oil recovery technical field, is a kind of rod-pumped well well mouth sealing device assembly specifically, is the well mouth sealing device of a kind of low frictional resistance, no leakage, self-lubricating, anti-eccentric wear.
Background technology
[0002] present, existing conventional packing box is under the borehole pressure effect, and oil gas outwards unloads leakage along the gap of polished rod and packing, and the gap is big more, and wastage is big more.The polished rod eccentric wear makes the well head sealing difficulty become big with rocking, because the elasticity of oil resistant rubber is limited, for preventing packing wearing and tearing back well head oil-gas leaking, the practice is to strengthen the thrust of packing usually, but acts on limitedly, has but increased energy consumption.This makes existing packing box mainly have the easy well head leakage that takes place, and seal friction power is bigger, safeguards problems such as frequent.Existing simultaneously seal box can not effectively solve the eccentric wear problem of polished rod, and eccentric wear causes that sealing difficulty is big, sealing effectiveness is poor, and seal friction power is big, and energy dissipation is serious.
Because gas in can not the effective seal well, make that gas is discharged in the atmosphere in the well, serious to atmosphere pollution, be discharged into simultaneously that gas and airborne oxygen mix on the polished rod surface seriously corroded that chemical reaction is prone to cause the polished rod surface take place in the airborne well.
Summary of the invention
In order to overcome deficiency above-mentioned in the prior art, the utility model provides a kind of rod-pumped well mouth sealing device assembly, and this rod-pumped well mouth sealing device assembly has the advantages that to fall low friction resistance, good airproof performance, nothing leakage, anti-eccentric wear.
The technical scheme of the utility model is: a kind of rod-pumped well mouth sealing device assembly; Comprise polished rod, outside sleeve pipe landing nipple, primary seal box, bulb and the outside bulb pressure cap thereof of polished rod; Described sleeve pipe landing nipple bottom is connected with the polished rod sleeve pipe through the sleeve pipe jointing, and between polished rod sleeve pipe and the polished rod annular space is arranged;
Described primary seal box bottom is connected with the secondary seal box, is provided with inside in the secondary seal box and is the seal of cavity, and there is lubrication oil seal inside, and is provided with the secondary seal pad between seal and the polished rod sleeve pipe;
Described bulb top is threaded with the secondary seal box; Bulb pressure cap bottom connects through the transition short circuit goes up the positioning of rotating dish; It is described that upward the positioning of rotating dish is eccentric with respect to polished rod; Last positioning of rotating tray bottom is provided with down the rotation positioning disk, and described rotation positioning disk down is connected with the well head joint screw thread.
The bottom of seal is fixed with second centralizer in the described secondary seal box, and the secondary seal box is provided with the oil filler point that communicates with the seal internal cavities, has oil-through hole to communicate with the secondary seal pad on the described seal inwall.
The described positioning disk of rotation down external screw-thread connects positioning of rotating lock pin cap, and described positioning of rotating lock pin cap upper inner has boss, will go up positioning of rotating dish axial locking through boss.
Described primary seal box internal fixation has first centralizer, and the first centralizer top is provided with the sliding bottom that inside is back taper, and sliding bottom inside is provided with the primary seal pad that matches with its inverted cone surface.
The utlity model has following beneficial effect: owing to take such scheme, be provided with wear-resistant, corrosion resistant polished rod sleeve pipe in the polished rod outside, polished rod is not directly contacted with sealing device, avoid polished rod wearing and tearing, corrosion; Also be provided with the secondary seal box in primary seal box bottom, in the seal cavity of secondary seal box inside lubrication oil arranged, effectively sealing gas also plays lubricated effect to the polished rod sleeve pipe, has reduced frictional resistance simultaneously; Last positioning of rotating dish is an eccentric structure, can carry out adjusting in the horizontal plane to polished rod through rotation, to prevent the polished rod eccentric wear.Therefore; The utility model has not only solved the problem of conventional well mouth sealing device gas leak of the oil leakage; Also effectively solved the corrosive wear on polished rod surface and the problem of eccentric wear, reduced the lot of energy loss, rational in infrastructure, dependable performance, long, the long service life of maintenance period.
Description of drawings
Fig. 1 is the structural representation of the utility model.
1-polished rod among the figure, 2-sleeve pipe landing nipple, 3-sealing ring, 4-side's card, 5-sleeve pipe jointing, 6-sealing mat; 7-polished rod sleeve pipe, 8-pressure cap, 9-primary seal short circuit, 10-primary seal pad, 11-primary seal box; The 12-sliding bottom, 13-first centralizer, 14-oil filler point, 15-secondary seal pad, 16-fuel reserve tank; 17-secondary seal box, 18-second centralizer, 19-bulb, 20-bulb pressure cap, 21-bulb base; 22-transition short circuit, the last positioning of rotating dish of 23-, 24-be the rotation positioning disk down, 25-positioning of rotating lock nut, 26-well head joint.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
By shown in Figure 1, a kind of rod-pumped well mouth sealing device assembly comprises polished rod 1, primary seal box 11, bulb 19; The sleeve pipe landing nipple 2 of polished rod 1 outside; Be provided with sealing ring 3 between polished rod 1 and the sleeve pipe landing nipple 2, the sleeve pipe landing nipple 2 external stability sides of having card 2, described sleeve pipe landing nipple 2 bottoms are connected with polished rod sleeve pipe 7 through sleeve pipe jointing 5; Directly do not contact between polished rod sleeve pipe 7 and the polished rod 1; Uniform annular space is arranged between the two, between polished rod sleeve pipe 7 tops and the sleeve pipe jointing 5 sealing mat is arranged, the liquid between polished rod 1 and the polished rod sleeve pipe 7 is played sealing function.Polished rod sleeve pipe 7 times is to passing primary seal box 11, secondary seal box 17, bulb 19 and well head joint 26; Make polished rod 1 directly not contact with sealing device; But contact with sealing device through polished rod sleeve pipe 7; Avoid polished rod 1 wearing and tearing, and polished rod sleeve pipe 7 is processed for wear-resistant, anticorrosive, can prolong its application life effectively.
The outside, polished rod sleeve pipe 7 middle parts is fixed with primary seal device and two stage sealing device respectively; Primary seal device outside is a primary seal box 11; The effect that described primary seal box 11 internal fixation have 13 pairs of polished rod sleeve pipes 7 of first centralizer, 13, the first centralizers and inner polished rod 1 thereof to play to set upright.First centralizer, 13 tops are provided with sliding bottom 12, and sliding bottom 12 inside are back taper, and its inside is provided with the primary seal pad 10 that matches with its inverted cone surface; Primary seal pad 10 is several bullets; Primary seal short circuit 9 is arranged at top, and is compressed by pressure cap 8, after 10 wearing and tearing of oil pumper long-play primary seal pad; Can compress primary seal pad 10 through the pressure cap 8 of screwing, make it continue to keep sealing.
Described primary seal box 11 bottoms are connected with secondary seal box 17, and secondary seal box 17 bottoms are provided with second centralizer, 18, the second centralizers, 18 tops and are provided with the inner seal 27 of cavity that is; Its cavity is a fuel reserve tank 16; Can store lubrication oil, have oil filler point 14 to lead to fuel reserve tank 16 on secondary seal box 17 sidewalls, in order in fuel reserve tank 16, to annotate lubrication oil; And be provided with secondary seal pad 15 between seal 27 and the polished rod sleeve pipe 7; Seal 27 inwalls are provided with oil-through hole, make that the lubrication oil in the fuel reserve tank 16 can flow to secondary seal pad 15, are lubricated and seal through 15 pairs of polished rod sleeve pipes 7 of secondary seal pad.Lubrication oil in the fuel reserve tank 16 has not only been realized the lubricated and sealing to polished rod sleeve pipe 7, can prevent effectively that also gas is excessive in the well, thus the corrosion that alleviates polished rod sleeve pipe 7.
Described bulb 19 tops are threaded with secondary seal box 17, and there is bulb pressure cap 20 bulb 19 outsides, and bulb pressure cap 20 inside are provided with the bulb base 21 that matches with bulb 19 bottom circular arcs.Bulb 19 can carry out the adjustment of differing tilt angles, thus the angle of inclination of adjustment polished rod 1.Transition short circuit 22 is arranged at bulb base 21 bottoms; Bulb pressure cap 20 bottoms connect through transition short circuit 22 goes up positioning of rotating dish 23; Described upward positioning of rotating dish 23 is an eccentric structure, and promptly with respect to polished rod 1 eccentric axis, last positioning of rotating dish 23 bottoms are provided with down rotation positioning disk 24; The described positioning disk of rotation down 24 external screw-threads connect positioning of rotating lock pin cap 25; Described positioning of rotating lock pin cap 25 upper inner have boss, will go up positioning of rotating dish 23 axial lockings through boss, and it is rotatable at circumferencial direction to go up positioning of rotating dish 23.The described positioning disk 24 of rotation down is threaded with well head joint 26.Because last positioning of rotating dish 23 is an eccentric structure, can carry out tuningout in the polished rod horizontal plane through rotating positioning of rotating dish 23, effectively alleviates polished rod 1 eccentric wear, 23 lockings of positioning of rotating dish will be gone up through positioning of rotating lock nut 25 in the adjustment back, fix.
Claims (4)
1. rod-pumped well mouth sealing device assembly; Comprise polished rod (1), outside sleeve pipe landing nipple (2), primary seal box (11), bulb (19) and the outside bulb pressure cap (20) thereof of polished rod (1); It is characterized in that: described sleeve pipe landing nipple (2) bottom is connected with polished rod sleeve pipe (7) through sleeve pipe jointing (5), and between polished rod sleeve pipe (7) and the polished rod (1) annular space is arranged;
Described primary seal box (11) bottom is connected with secondary seal box (17); Be provided with the inner seal of cavity (27) that is in the secondary seal box (17); There is lubrication oil seal (27) inside, and is provided with secondary seal pad (15) between seal (27) and the polished rod sleeve pipe (7);
Described bulb (19) top is threaded with secondary seal box (17); Bulb pressure cap (20) bottom is through positioning of rotating dish (23) in transition short circuit (22) connection; The described positioning of rotating dish (23) of going up is with respect to polished rod (1) off-centre; Last positioning of rotating dish (23) bottom is provided with down rotation positioning disk (24), and described rotation positioning disk (24) down is threaded with well head joint (26).
2. rod-pumped well mouth sealing device assembly according to claim 1; It is characterized in that: the bottom of the interior seal of described secondary seal box (17) (27) is fixed with second centralizer (18); Secondary seal box (17) is provided with the oil filler point (14) that communicates with seal (27) internal cavities, has oil-through hole to communicate with secondary seal pad (15) on described seal (27) inwall.
3. rod-pumped well mouth sealing device assembly according to claim 2; It is characterized in that: the described positioning disk (24) of rotation down external screw-thread connects positioning of rotating lock pin cap (25); Described positioning of rotating lock pin cap (25) upper inner has boss, will go up positioning of rotating dish (23) axial locking through boss.
4. rod-pumped well mouth sealing device assembly according to claim 3; It is characterized in that: described primary seal box (11) internal fixation has first centralizer (13); First centralizer (13) top is provided with the sliding bottom (12) that inside is back taper, and sliding bottom (12) inside is provided with the primary seal pad (10) that matches with its inverted cone surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200576120U CN202417399U (en) | 2012-02-22 | 2012-02-22 | Pumping unit well mouth sealing device assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200576120U CN202417399U (en) | 2012-02-22 | 2012-02-22 | Pumping unit well mouth sealing device assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417399U true CN202417399U (en) | 2012-09-05 |
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ID=46742172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200576120U Expired - Fee Related CN202417399U (en) | 2012-02-22 | 2012-02-22 | Pumping unit well mouth sealing device assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417399U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806189A (en) * | 2015-03-09 | 2015-07-29 | 中国石油天然气股份有限公司 | Forced centralizing lubricating sealing device for polish rod of pumping well |
| CN105672930A (en) * | 2016-03-08 | 2016-06-15 | 宝鸡石油机械有限责任公司 | Casing pipe seal box capable of achieving automatic centring |
| CN109113630A (en) * | 2018-08-15 | 2019-01-01 | 延安大学 | A kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly |
| CN110000021A (en) * | 2019-05-20 | 2019-07-12 | 中国石油大学(华东) | A kind of mixed flexible nozzle of second level rotation |
-
2012
- 2012-02-22 CN CN2012200576120U patent/CN202417399U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806189A (en) * | 2015-03-09 | 2015-07-29 | 中国石油天然气股份有限公司 | Forced centralizing lubricating sealing device for polish rod of pumping well |
| CN104806189B (en) * | 2015-03-09 | 2017-08-04 | 中国石油天然气股份有限公司 | Forced centralizing lubricating sealing device for polish rod of pumping well |
| CN105672930A (en) * | 2016-03-08 | 2016-06-15 | 宝鸡石油机械有限责任公司 | Casing pipe seal box capable of achieving automatic centring |
| CN105672930B (en) * | 2016-03-08 | 2020-04-24 | 宝鸡石油机械有限责任公司 | Automatic centering sleeve sealing box |
| CN109113630A (en) * | 2018-08-15 | 2019-01-01 | 延安大学 | A kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly |
| CN110000021A (en) * | 2019-05-20 | 2019-07-12 | 中国石油大学(华东) | A kind of mixed flexible nozzle of second level rotation |
| CN110000021B (en) * | 2019-05-20 | 2023-12-26 | 中国石油大学(华东) | Two-stage rotary mixing flexible nozzle |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170912 Granted publication date: 20120905 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20190912 Granted publication date: 20120905 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20180222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |