CN203796208U - Self-aligning, deflection correcting and pressured packing device for wellhead equipment - Google Patents
Self-aligning, deflection correcting and pressured packing device for wellhead equipment Download PDFInfo
- Publication number
- CN203796208U CN203796208U CN201420136167.6U CN201420136167U CN203796208U CN 203796208 U CN203796208 U CN 203796208U CN 201420136167 U CN201420136167 U CN 201420136167U CN 203796208 U CN203796208 U CN 203796208U
- Authority
- CN
- China
- Prior art keywords
- aligning
- way
- tuningout
- polished rod
- pressure
- 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 - Lifetime
Links
- 238000012856 packing Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 49
- 210000004907 gland Anatomy 0.000 claims description 20
- 229920001971 elastomer Polymers 0.000 claims description 12
- 239000005060 rubber Substances 0.000 claims description 12
- 238000005086 pumping Methods 0.000 abstract description 31
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 37
- 239000003129 oil well Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses a self-aligning, deflection correcting and pressured packing device which comprises a four-way shell. A self-aligning ball seat is disposed inside the upper end of the four-way shell. The self-aligning ball seat comprises a polished rod seat and a ball. The polished rod seat is disposed on the ball and integrated with the same. An inverted frustum cone seal ring is disposed in the pipe orifice at the upper end of the polished rod seat. A pressing block is disposed above the seal ring. A pressing cap is disposed above the pressing block. The pressing cap covers the pipe orifice at the upper end of the polished rod seat. A clamp ring is disposed inside the upper end of the four-way shell. The ball of the self-aligning ball seat is disposed in the cavity formed by the clamp ring and the upper-end inner wall of the four-way shell. A seal device is disposed at each of the two horizontal ends of the four-way shell. A deflection correcting device is further disposed at the lower end of the four-way shell. By the self-aligning, deflection correcting and pressured packing device, self-aligning and deflection correcting of an oil pumping polished rod can be completed, even friction between the seal ring and the oil pumping polished rod is achieved, the service life of the oil pumping polished rod is prolonged, oil leakage is prevented, environmental pollution is reduced, the seal ring can be replaced under a pressured condition, and safety and reliability are achieved.
Description
Technical field
The utility model relates to petroleum machinery technical field, relates in particular to a kind of aligning, tuningout, packing unit with pressure for wellhead equipment.
Background technology
In oilfield exploitation oil, a lot of oil wells can produce blowing in the initial stage of exploitation because internal oil pressure is higher, do not need to extract, but being on the increase along with oil pump capacity, the internal pressure of oil well constantly reduces, the state of blowing fades away, now just need to pump by external force, conventionally be all by wellhead assembly being set at well head, oil pumping polish rod is stretched into oil well from the center of wellhead assembly pumps, conventionally can on oil pumping polish rod, be set with sealing ring in order to prevent that the sidewall along sucker rod is revealed in the process of oil pumping, but owing to producing friction between sealing ring meeting and oil pumping polish rod in the reciprocating motion process of oil pumping polish rod, along with the wearing and tearing of sealing ring are day by day serious, sealing performance will progressively decline and finally scrap, be no more than under normal circumstances 3 days and just need to change sealing ring, more frequent, have a strong impact on oil yield efficiency, and cause the situation of blowout to be easy to threaten production work personnel's life security changing in the process of sealing ring in oil well just in case occur that oil pressure raises again, very dangerous.
Utility model content
in order to solve existing the problems referred to above, the utility model provides a kind of aligning, tuningout, packing unit with pressure for wellhead equipment, can realize aligning and tuningout to oil pumping polish rod, and can in situation with pressure, change sealing ring.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
A kind of wellhead equipment aligning, tuningout, packing unit with pressure, comprise four-way housing, it is characterized in that: inside, described four-way housing upper end is provided with aligning ball seat, aligning ball seat comprises polished rod seat and bulb, polished rod seat is arranged on the top of bulb one-body molded with bulb, in the mouth of pipe of polished rod seat upper end, be provided with reverse frustoconic sealing ring, the top of sealing ring is provided with briquetting, briquetting top is provided with pressure cap, pressure cap fastens the polished rod seat upper end mouth of pipe, inside, four-way housing upper end is provided with snap ring, the ball head of aligning ball seat divides and is arranged in the shape chamber that snap ring and four-way housing upper end inwall form, two horizontal ends of described four-way housing are respectively provided with a sealing device.
Preferably, described sealing device comprises end cap, screw rod, described end cap is arranged on one end of four-way housing horizontal direction, the head of screw rod passes and extend in four-way case from end cap, afterbody is stayed end cap outside, the outside of screw rod is provided with corresponding screw thread with the hole wall that screw rod passes the hole on end cap, is also provided with semi-hollow cylindrical block rubber at the head of screw rod.
Preferably, the sealing ring of described reverse frustoconic coils folded forming in the shape of a spiral by ribbon rubber strip.
Preferably, the lower end of described four-way housing is also provided with deviation correcting device.
Preferably, described deviation correcting device comprises tuningout pressure cap and hoop adapter sleeve, be provided with the flat flange vertical with the sidewall of four-way case lower end in four-way housing lower end port outside, described tuningout pressure cap comprises shape gland and the tegmental wall of ring, tegmental wall is arranged on the outer rim of gland and vertical with gland plane, tegmental wall and gland are one-body molded, the interior ring diameter of gland is greater than the external diameter of four-way case lower end case, tegmental wall inner side is provided with the upper end lateral wall of hoop adapter sleeve and is provided with mutual corresponding screw thread, gland is pressed in the upper surface of flange, hoop adapter sleeve is arranged on the lower end of four-way housing, by tightening tuningout pressure cap, hoop adapter sleeve is connected with four-way case.
The beneficial effect that the utility model reaches is: by being provided with aligning ball seat in inside, four-way housing upper end, and be provided with reverse frustoconic sealing ring in the mouth of pipe of polished rod seat upper end, because sealing ring is reverse frustoconic, up big and down small, when upwards dismounting, resistance is very little, and because the sealing ring of described reverse frustoconic coils folded forming in the shape of a spiral by ribbon rubber strip, so be just easy to sealing ring to take out as long as hold the tail end of ribbon rubber strip, and be provided with snap ring by inside, four-way housing upper end, the ball head of aligning ball seat divides and is arranged in the shape chamber that snap ring and four-way housing upper end inwall form, the angle adjustment that can make spherical ball cover for seat live oil pumping polish rod in the vertical direction makes oil pumping polish rod and sealing ring reach best laminating degree, greatly extend the application life of sealing ring, its life-span from before extend to 8 days less than 3, frequency and the crude oil leakage pollution on the environment changed are reduced, save the time owing to having reduced replacement frequency, so improved the productive rate of crude oil, two horizontal ends of described four-way housing are respectively provided with a sealing device, can the in the situation that of oil well with pressure, change sealing ring, can not produce the phenomenon of blowout, safe and reliable, and being also provided with deviation correcting device by the lower end at described four-way housing can adjust oil pumping polish rod on horizontal level, increase flexibility.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to further describe technical characterstic of the present utility model and effect, below in conjunction with the drawings and specific embodiments, the utility model is described further.
With reference to Fig. 1, a kind of wellhead equipment aligning, tuningout, packing unit with pressure, comprise four-way housing 1, it is characterized in that: described four-way housing 1 inside, upper end is provided with aligning ball seat 2, aligning ball seat 2 comprises polished rod seat 21 and bulb 22, polished rod seat 21 is arranged on the top of bulb 22 one-body molded with bulb 22, in the polished rod seat 21 upper end mouths of pipe, be provided with reverse frustoconic sealing ring 3, the top of sealing ring 3 is provided with briquetting 4, briquetting top is provided with pressure cap 5, pressure cap 5 fastens the polished rod seat 21 upper end mouths of pipe, four-way housing 1 inside, upper end is provided with snap ring 6, bulb 22 parts of aligning ball seat 2 are arranged in the shape chamber that snap ring 6 and four-way housing 1 upper end inwall form, two horizontal ends of described four-way housing 1 are respectively provided with a sealing device 7.
Further, described sealing device 7 comprises end cap 71, screw rod 72, described end cap 71 is arranged on one end of four-way housing 1 horizontal direction, the head of screw rod 72 passes and extend in four-way case 1 from end cap 71, afterbody is stayed end cap 71 outsides, the outside of screw rod 72 and screw rod 72 the hole wall in the hole on the end cap that passes 71 be provided with corresponding screw thread, be also provided with semi-hollow cylindrical block rubber 73 at the head of screw rod 72.
In order to make sealing ring 3 be easy to dismounting in changing, the sealing ring 3 of described reverse frustoconic coils folded forming in the shape of a spiral by ribbon rubber strip.
Can adjust in the horizontal direction to reach better oil pumping effect for the position that makes oil pumping polish rod, the lower end of described four-way housing 1 is also provided with deviation correcting device 8.
Further, described deviation correcting device 8 comprises tuningout pressure cap 81 and hoop adapter sleeve 82, be provided with the flat flange 9 vertical with the sidewall of four-way case 1 lower end in four-way housing 1 port outside, lower end, described tuningout pressure cap 81 comprises the shape gland 811 and tegmental wall 812 of ring, tegmental wall 822 is arranged on the outer rim of gland 811 and vertical with gland 811 planes, tegmental wall 812 is one-body molded with gland 811, the interior ring diameter of gland 811 is greater than the external diameter of four-way case 1 lower end case, tegmental wall 812 inner sides are provided with the upper end lateral wall of hoop adapter sleeve 82 and are provided with mutual corresponding screw thread, gland 811 is pressed in the upper surface of flange 9, hoop adapter sleeve 82 is arranged on the lower end of four-way housing 1, by tightening tuningout pressure cap 81, hoop adapter sleeve 82 is connected with four-way case 1.
When use, the utility model is arranged on wellhead assembly, oil pumping polish rod stretches into from the upper end of four-way housing 1, successively through pressure cap 5, briquetting 4, sealing ring 3, aligning ball seat 2, sealing device 7 and deviation correcting device 8 extend into oil well inside, oil pumping polish rod in the vertical direction moves reciprocatingly and pumps, so be wrapped in the outside oil of oil pumping polish rod can not leak due to sealing ring 3, and because polished rod seat 21 is tubular structure, its inner side, upper end is the conical surface corresponding with the outside of reverse frustoconic sealing ring 3, in the time that sealing ring 3 is pressed downward, its lateral surface can well be fitted with polished rod seat 21 upper end inside walls, further improve sealing, ensureing can leakage of oil, but because oil pumping polish rod in the process using is not likely completely parallel with sealing ring 3, cause the friction between oil pumping polish rod and sealing ring 3 inhomogeneous, easily reduce the application life of sealing ring 3, now can finely tune the angle of oil pumping polish rod vertical direction so that sealing ring 3 and oil pumping polish rod are evenly fitted by adjusting aligning ball seat 2, when sealing ring 3 losses, need to change to ensure to certain degree time not can leakage of oil, in most of the cases need the oil well internal pressure of pumping with oil pumping polish rod can not make crude oil produce blowing phenomenon, comparatively safe, but this neither be absolute, will produce blowing phenomenon just in case pull down sealing ring 3 in the case of the oil pressure in well raises suddenly, can bring great threat to constructor's life, for head it off, in the sealing ring 3 of changing oil pumping polish rod upper end, can achieve the goal by sealing device 7, in normal oil pumping, the block rubber 73 of sealing device 7 and oil pumping polish rod are in released state, the screw rod 72 that passes through two horizontal ends of rotating four-way housing 1 in the time need to changing sealing ring 3 pushes up block rubber 73 to the direction of oil pumping polish rod, in order to ensure sealing effectiveness, block rubber 73 is designed to the semi-hollow cylindrical corresponding with oil pumping polish rod outer wall, in the time that pushing up oil pumping polish rod completely, just in time the oil circuit of lower end is shut two block rubbers 73, the sealing ring 3 of now changing again upper end is just safer.Once the horizontal level formula of being fixed of oil pumping polish rod cannot be adjusted in oil pumping process in the past, in the utility model, only tuningout pressure cap 81 and hoop adapter sleeve 82 need to be unclamped, there is in the horizontal direction certain offset so be greater than the case external diameter four-way case 1 of four-way case 1 lower end due to the interior ring diameter of the gland 811 of tuningout pressure cap 81 with respect to tuningout pressure cap 81, after adjusting position, tuningout pressure cap 81 and hoop adapter sleeve 82 are tightened now to the gland 811 of tuningout pressure cap again presses also and compresses with the upper surface of flange 9, now four-way case 1 is connected and fixed again with hoop adapter sleeve 82.
Above-described embodiment does not limit the utility model in any form, and all technical schemes of taking the form that is equal to replacement or equivalent transformation to obtain, within all dropping on protection domain of the present utility model.
Claims (5)
1. a wellhead equipment aligning, tuningout, packing unit with pressure, comprise four-way housing (1), it is characterized in that: described four-way housing (1) inside, upper end is provided with aligning ball seat (2), aligning ball seat (2) comprises polished rod seat (21) and bulb (22), polished rod seat (21) is arranged on the top of bulb (22) one-body molded with bulb (22), in the mouth of pipe of polished rod seat (21) upper end, be provided with reverse frustoconic sealing ring (3), the top of sealing ring (3) is provided with briquetting (4), briquetting top is provided with pressure cap (5), pressure cap (5) fastens polished rod seat (21) the upper end mouth of pipe, four-way housing (1) inside, upper end is provided with snap ring (6), bulb (22) part of aligning ball seat (2) is arranged in the shape chamber that snap ring (6) and four-way housing (1) upper end inwall form, two horizontal ends of described four-way housing (1) are respectively provided with a sealing device (7).
2. a kind of wellhead equipment aligning according to claim 1, tuningout, packing unit with pressure, it is characterized in that: described sealing device (7) comprises end cap (71), screw rod (72), described end cap (71) is arranged on one end of four-way housing (1) horizontal direction, the head of screw rod (72) passes and extend in four-way case (1) from end cap (71), afterbody is stayed end cap (71) outside, the outside of screw rod (72) and screw rod (72) the hole wall in the hole on the end cap that passes (71) be provided with corresponding screw thread, also be provided with semi-hollow cylindrical block rubber (73) at the head of screw rod (72).
3. a kind of aligning, tuningout, packing unit with pressure for wellhead equipment according to claim 1, is characterized in that: the sealing ring (3) of described reverse frustoconic coils folded forming in the shape of a spiral by ribbon rubber strip.
4. a kind of aligning, tuningout, packing unit with pressure for wellhead equipment according to claim 1, is characterized in that: the lower end of described four-way housing (1) is also provided with deviation correcting device (8).
5. a kind of wellhead equipment aligning according to claim 4, tuningout, packing unit with pressure, it is characterized in that: described deviation correcting device (8) comprises tuningout pressure cap (81) and hoop adapter sleeve (82), be provided with the flat flange (9) vertical with the sidewall of four-way case (1) lower end in four-way housing (1) lower end port outside, described tuningout pressure cap (81) comprises the shape gland (811) and tegmental wall (812) of ring, tegmental wall (822) is arranged on the outer rim of gland (811) and vertical with gland (811) plane, tegmental wall (812) is one-body molded with gland (811), the interior ring diameter of gland (811) is greater than the external diameter of four-way case (1) lower end case, tegmental wall (812) inner side is provided with the upper end lateral wall of hoop adapter sleeve (82) and is provided with mutual corresponding screw thread, gland (811) is pressed in the upper surface of flange (9), hoop adapter sleeve (82) is arranged on the lower end of four-way housing (1), by tightening tuningout pressure cap (81), hoop adapter sleeve (82) is connected with four-way case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136167.6U CN203796208U (en) | 2014-03-24 | 2014-03-24 | Self-aligning, deflection correcting and pressured packing device for wellhead equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136167.6U CN203796208U (en) | 2014-03-24 | 2014-03-24 | Self-aligning, deflection correcting and pressured packing device for wellhead equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796208U true CN203796208U (en) | 2014-08-27 |
Family
ID=51378429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420136167.6U Expired - Lifetime CN203796208U (en) | 2014-03-24 | 2014-03-24 | Self-aligning, deflection correcting and pressured packing device for wellhead equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796208U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005727A (en) * | 2014-03-24 | 2014-08-27 | 南京伟业机械有限公司 | Aligning and deviation-adjusting pressure packing device for wellhead equipment |
| CN116291294A (en) * | 2023-05-23 | 2023-06-23 | 大庆金海达石油科技有限公司 | Blowout prevention switching device for oil extraction wellhead |
-
2014
- 2014-03-24 CN CN201420136167.6U patent/CN203796208U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005727A (en) * | 2014-03-24 | 2014-08-27 | 南京伟业机械有限公司 | Aligning and deviation-adjusting pressure packing device for wellhead equipment |
| CN116291294A (en) * | 2023-05-23 | 2023-06-23 | 大庆金海达石油科技有限公司 | Blowout prevention switching device for oil extraction wellhead |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |