CN201206453Y - Multi-stage portal polish-rod sealing device - Google Patents
Multi-stage portal polish-rod sealing device Download PDFInfo
- Publication number
- CN201206453Y CN201206453Y CNU2008201078408U CN200820107840U CN201206453Y CN 201206453 Y CN201206453 Y CN 201206453Y CN U2008201078408 U CNU2008201078408 U CN U2008201078408U CN 200820107840 U CN200820107840 U CN 200820107840U CN 201206453 Y CN201206453 Y CN 201206453Y
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- packing
- annular seal
- seal space
- translation pedestal
- spheroid
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Abstract
The utility model relates to a novel multistage polished rod sealer with good sealing effect and simple maintenance and cure for a sealed well head. The sealer adopts the technical proposal that the sealer comprises an upper sealing cavity (12); the upper sealing cavity comprises a packing set (1) arranged in a casing body, a packing set pressing cap (2) is pressed on the packing set (1); and both the packing set (1) and the packing set pressing cap (2) are positioned in a cap shell (3). The sealer is characterized in that a middle sealing cavity is formed under the upper sealing cavity (12); a packing set (1A) is included in the middle sealing cavity, a packing set pressing cap (2A) is pressed on the packing set (1A); both the packing set (1A) and the packing set pressing cap (2A) are positioned in a cap shell (3A); the middle sealing cavity is connected with the upper sealing cavity through a packing set connecting body (10); the lower end of the cap shell (3A) is connected a lower sealing cavity through threads; the lower sealing cavity comprises a translational base body (6), a bottom base (8) and a locking outer sleeve (7); and outer threads are arranged at the upper part of the translational base body (6) and are used for connecting with the middle sealing cavity.
Description
Technical field
The utility model relates to a kind of oilfield machinery, promptly is used for the new multistage sealing wellhead polish rod sealer of oil-extractor polish-rod sealing usefulness.
Background technology
At present; the on-the-spot normally used conventional formula oil pumping polish rod sealer in oil field directly is fixedly mounted on well head with seal box; but because the accuracy of manufacture of underground working factor and ground pumping unit; and the component of the pumping unit influence of behind bearing load, being out of shape; oil pumping polish rod is when moving up and down; also supervene moving horizontally of certain orientation; i.e. " swing "; this can make the frictional resistance of polished rod motion increase; sealer sharply damages, and causes crude oil to exosmose, therefore; must shut down and change sealer, this makes the oil pumping polish rod sealer lost of life; also can cause a large amount of crude oil losses when changing sealer.Chinese patent 032533071 disclosed " multi-functional mouth of pumped oil well polished rod sealer " adopts a packing, is also needing improvement aspect packing_seal and the maintenance.
The utility model content
The purpose of this utility model provides a kind of good sealing effect, the simple new multistage sealing of maintaining wellhead polish rod sealer.
For achieving the above object, the present invention adopts following technical scheme: new multistage sealing wellhead polish rod sealer, comprise annular seal space (12), last annular seal space comprises the packing (1) that is arranged in the housing, packing pressure cap (2) is pressed on the packing (1), packing (1) and packing pressure cap (2) all are arranged in cap shell (3), it is characterized in that annular seal space (12) below be provided with middle annular seal space (13), comprise packing (1A) in the middle annular seal space, packing pressure cap (2A) is pressed on the packing (1A), packing (1A) and packing pressure cap (2A) all are arranged in cap shell (3A), middle annular seal space links to each other with the overall root connector of last annular seal space (10), the lower end of cap shell (3A) is by the lower seal chamber that is threaded, the lower seal chamber comprises translation pedestal (6), base (8) and locking jacket (7), the top of translation pedestal (6) has external screw thread, is used for being connected with annular seal space, the bottom of translation pedestal (6) is a cylinder, and this cylindrical diameter is greater than the external diameter of threaded portion; Translation pedestal (6) is sleeved in the locking jacket (7), the aperture on locking jacket (7) top is greater than the internal diameter of the external diameter of translation pedestal (6) threaded portion, the bottom external diameter greater than translation pedestal (6) barrel portion, make translation pedestal (6) translation therein, locking jacket (7) is threaded with the base (8) that is positioned at translation pedestal (6) below.
Between middle annular seal space and lower seal chamber, be connected with ball-joint, ball-joint comprises spheroid (43) and spheroid pressure cap (5), the upper end of spheroid (43) has the adapter cavity that can be threaded with last annular seal space, adapter cavity is sleeved in the spheroid pressure cap (5), have ball-and-socket on the translation pedestal (6) in lower seal chamber, spheroid (43) is installed in the ball-and-socket, and spheroid pressure cap (5) is threaded with the lower seal chamber.
Middle annular seal space packing (1A) is a left hand thread, forms active force with last annular seal space packing (1) right-handed thread, thereby has played the effect of avoiding emptying.
Last annular seal space packing (1), middle annular seal space packing (1A) are the cylinder bullet, and material is that oil resistant rubber adds nylon wire.
The place that the top of translation pedestal (6) is connected with the lower cylindrical body portion has a circle groove.
Base (8) can be the body that is threaded, and also can be the clamp connection body.
Have sealing ring (44) in the spheroid (43).
The outside of packing (1) and packing (1A) has packing sheath (11).
Have handle socket (17) on the outside cylinder of locking jacket (7).
The utility model compared with prior art has following advantage:
(1) the utility model increases the left-hand screw packing, forms two Screw disk-seal tubes, utilizes active force and reaction force that packing is firmly sealed, and packing adds that the spiral dismounting is convenient.
(2) partly connect owing to having increased spheroid, can be suitably crooked in 360 degree scopes, improved compliance to the polished rod motion.
(3) since the diameter of translation pedestal less than the internal diameter of pressing locking jacket thereon, the translation pedestal can be done radial motion in the 360 degree scopes with base, has further improved the compliance to the polished rod motion, reduces friction.
(4) when changing packing, can partly close polished rod sealer, reduce the crude oil loss, increase work efficiency by seal valve.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model;
Fig. 2 is the structural representation of another embodiment of the utility model.
The specific embodiment
Embodiment 1:
As shown in Figure 1, new multistage sealing wellhead polish rod sealer comprises annular seal space 12, and last annular seal space comprises the packing 1 that is arranged in the housing, and packing pressure cap 2 is pressed on the packing 1, has oil storage tank 21 above the packing pressure cap 2; The outside of packing 1 has packing sheath 11, packing 1 and packing pressure cap 2 all are arranged in cap shell 3, annular seal space 13 in being provided with below the last annular seal space 12, comprise packing 1A in the middle annular seal space, packing pressure cap 2A is pressed on the packing 1A, packing 1A and packing pressure cap 2A all are arranged in cap shell 3A, have oil storage tank above the packing pressure cap 2A, middle annular seal space links to each other with the overall root connector 10 of last annular seal space, the lower end of cap shell 3A is by seal with screwed joint valve 4, is provided with the seal 42 that can be promoted by screw rod 41 in the valve body of seal valve 4, and rotating screw bolt 41 can promote seal 42 and move, thereby can hold polished rod 9 tightly, oil duct is closed; The lower end of seal valve 4 is a spheroid 43, has spheroid pressure cap 5 on the spheroid 43, has sealing ring 44 in the spheroid 43, and spheroid 43 is installed in the ball-and-socket of translation pedestal 6, and spheroid pressure cap 5 is threaded with translation pedestal 6; The top of the translation pedestal 6 in lower seal chamber is threaded, and is connected with spheroid pressure cap 5, and the bottom of translation pedestal 6 is a cylinder, and this cylindrical diameter is greater than the external diameter of threaded portion; Translation pedestal 6 is sleeved in the locking jacket 7, the aperture on locking jacket 7 tops is greater than the internal diameter of the external diameter of translation pedestal 6 threaded portions, the bottom external diameter greater than translation pedestal 6 barrel portions, translation pedestal 6 can be moved therein, and locking jacket 7 is threaded with the base 8 that is positioned at translation pedestal 6 belows.Connector 8 can be the body that is threaded, and also can be the clamp connection body.Have handle socket 17 on the outer circumference of locking jacket 7, can insert handle rotation lock overcoat 7 easily.
Middle annular seal space packing 1A is a left hand thread, forms active force with last annular seal space packing 1 right-handed thread, thereby has played the effect of avoiding emptying.Last annular seal space packing 1, middle annular seal space packing 1A are the cylinder bullet, and material is that oil resistant rubber adds nylon wire.
Embodiment 2:
As shown in Figure 2, new multistage sealing wellhead polish rod sealer comprises annular seal space 12, and last annular seal space comprises the packing 1 that is arranged in the housing, and packing pressure cap 2 is pressed on the packing 1, has oil storage tank 21 above the packing pressure cap 2; The outside of packing 1 has packing sheath 11, packing 1 and packing pressure cap 2 all are arranged in cap shell 3, annular seal space 13 in being provided with below the last annular seal space 12, comprise packing 1A in the middle annular seal space, packing pressure cap 2A is pressed on the packing 1A, packing 1A and packing pressure cap 2A all are arranged in cap shell 3A, have oil storage tank above the packing pressure cap 2A, middle annular seal space links to each other with the overall root connector 10 of last annular seal space, the lower end of cap shell 3A is by the lower seal chamber that is threaded, the bottom of translation pedestal 6 is a cylinder, and this cylindrical diameter is greater than the external diameter of threaded portion; Translation pedestal 6 is sleeved in the locking jacket 7, the aperture on locking jacket 7 tops is greater than the internal diameter of the external diameter of translation pedestal 6 threaded portions, the bottom external diameter greater than translation pedestal 6 barrel portions, translation pedestal 6 can be moved therein, and locking jacket 7 is threaded with the base 8 that is positioned at translation pedestal 6 belows.Connector 8 can be the body that is threaded, and also can be the clamp connection body.Have handle socket 17 on the outer circumference of locking jacket 7, can insert handle rotation lock overcoat 7 easily.
Middle annular seal space packing 1A is a left hand thread, forms active force with last annular seal space packing 1 right-handed thread, thereby has played the effect of avoiding emptying.Last annular seal space packing 1, middle annular seal space packing 1A are the cylinder bullet, and material is that oil resistant rubber adds nylon wire.
Claims (9)
1, new multistage sealing wellhead polish rod sealer, comprise annular seal space (12), last annular seal space comprises the packing (1) that is arranged in the housing, packing pressure cap (2) is pressed on the packing (1), packing (1) and packing pressure cap (2) all are arranged in cap shell (3), it is characterized in that annular seal space (12) below be provided with middle annular seal space (13), comprise packing (1A) in the middle annular seal space, packing pressure cap (2A) is pressed on the packing (1A), packing (1A) and packing pressure cap (2A) all are arranged in cap shell (3A), middle annular seal space links to each other with the overall root connector of last annular seal space (10), the lower end of cap shell (3A) is by the lower seal chamber that is threaded, the lower seal chamber comprises translation pedestal (6), base (8) and locking jacket (7), the top of translation pedestal (6) has external screw thread, be used for being connected with annular seal space, the bottom of translation pedestal (6) is a cylinder, and this cylindrical diameter is greater than the external diameter of threaded portion; Translation pedestal (6) is sleeved in the locking jacket (7), the aperture on locking jacket (7) top is greater than the internal diameter of the external diameter of translation pedestal (6) threaded portion, the bottom external diameter greater than translation pedestal (6) barrel portion, make translation pedestal (6) translation therein, locking jacket (7) is threaded with the base (8) that is positioned at translation pedestal (6) below.
2, new multistage sealing wellhead polish rod sealer according to claim 1, it is characterized in that: between middle annular seal space and lower seal chamber, be connected with ball-joint, ball-joint comprises spheroid (43) and spheroid pressure cap (5), the upper end of spheroid (43) has the adapter cavity that can be threaded with last annular seal space, adapter cavity is sleeved in the spheroid pressure cap (5), have ball-and-socket on the translation pedestal (6) in lower seal chamber, spheroid (43) is installed in the ball-and-socket, and spheroid pressure cap (5) is threaded with the lower seal chamber.
3, new multistage sealing wellhead polish rod sealer according to claim 1 and 2, it is characterized in that: middle annular seal space packing (1A) is left hand thread, forms active force with last annular seal space packing (1) right-handed thread, thereby has played the effect of avoiding emptying.
4, new multistage sealing wellhead polish rod sealer according to claim 1 and 2, it is characterized in that: upward annular seal space packing (1), middle annular seal space packing (1A) are the cylinder bullet, and material is that oil resistant rubber adds nylon wire.
5, new multistage sealing wellhead polish rod sealer according to claim 1 and 2, it is characterized in that: the place that the top of translation pedestal (6) is connected with the lower cylindrical body portion has a circle groove.
6, new multistage sealing wellhead polish rod sealer according to claim 1 and 2, it is characterized in that: base (8) can be the body that is threaded, and also can be the clamp connection body.
7, new multistage sealing wellhead polish rod sealer according to claim 1 and 2 is characterized in that: have sealing ring (44) in the spheroid (43).
8, new multistage sealing wellhead polish rod sealer according to claim 1, it is characterized in that: the outside of packing (1) and packing (1A) has packing sheath (11).
9, new multistage sealing wellhead polish rod sealer according to claim 2 is characterized in that: have handle socket (17) on the outside cylinder of locking jacket (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201078408U CN201206453Y (en) | 2008-03-24 | 2008-03-24 | Multi-stage portal polish-rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201078408U CN201206453Y (en) | 2008-03-24 | 2008-03-24 | Multi-stage portal polish-rod sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206453Y true CN201206453Y (en) | 2009-03-11 |
Family
ID=40465520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201078408U Expired - Fee Related CN201206453Y (en) | 2008-03-24 | 2008-03-24 | Multi-stage portal polish-rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201206453Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287683A (en) * | 2018-12-07 | 2020-06-16 | 汪高松 | Wellhead polish rod sealing device of oil pumping machine |
| CN115354986A (en) * | 2022-08-10 | 2022-11-18 | 鞍山捷高科技有限公司 | Polished rod sealing assembly |
-
2008
- 2008-03-24 CN CNU2008201078408U patent/CN201206453Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287683A (en) * | 2018-12-07 | 2020-06-16 | 汪高松 | Wellhead polish rod sealing device of oil pumping machine |
| CN115354986A (en) * | 2022-08-10 | 2022-11-18 | 鞍山捷高科技有限公司 | Polished rod sealing assembly |
| CN115354986B (en) * | 2022-08-10 | 2023-10-03 | 鞍山捷高科技有限公司 | Polished rod sealing assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20110324 |