CN202090878U - Oil extraction well mouth packing seal device - Google Patents
Oil extraction well mouth packing seal device Download PDFInfo
- Publication number
- CN202090878U CN202090878U CN2011202082648U CN201120208264U CN202090878U CN 202090878 U CN202090878 U CN 202090878U CN 2011202082648 U CN2011202082648 U CN 2011202082648U CN 201120208264 U CN201120208264 U CN 201120208264U CN 202090878 U CN202090878 U CN 202090878U
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- China
- Prior art keywords
- packing
- seal
- ball joint
- polished rod
- seal device
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- Expired - Fee Related
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Abstract
The utility model relates to an oil extraction well mouth packing seal device, which consists of an automatic center adjusting mechanism and a second level seal assembly which are connected by adjusting a coupling. The automatic center adjusting mechanism comprises an eccentric ball seat and a center adjusting ball joint which are matched with each other and connected through a joint pressing cover. The center adjusting ball joint is provided with an eccentric step through hole, a seal part is installed in the step through hole, and seal pressing parts are arranged at the positions of both ends of the seal part. The second level seal assembly is provided with a sleeve which is connected to the center adjusting ball joint in penetrating mode. A polish rod centering device, a seal packing and a pressing gland sequentially penetrate through the sleeve, and one end of the pressing gland is provided with a compression spring and a spring gland. The device is capable of effectively avoiding eccentric wear between a packing and a polish rod and between the polish rod and the gland and prolonging service life of the packing. The device has the advantages of being reliable in seal property, long in maintenance period interval, fast and convenient to examine and repair the packing, long in service life and the like.
Description
Technical field
The utility model belongs to well recovery equipment part technical field, specifically is a kind of production wellhead packing_seal device.
Background technology
At present domestic each oil field great majority adopt sucker-rod pumping machine crude oil extraction, and at the pumpingh well well head, widely-used packing box is realized the sealing of polished rod, and rod-pumped well wellhead polish rod sealed packing box is the vitals of sealed well lower tubular column.Common packing box installs back and well head center line relative fixed at well head, can't laterally adjust, require polished rod and packing box concentric in theory, but influenced by various destabilizing factors owing to the oil pumper alignment error and after bringing in, most of pumping unit of well suspension point is concentric with the very difficult assurance in well head center, causes packing and polished rod generation eccentric wear, gently then packing shortening in application life, heavy then polished rod grinds mutually with " Glan ", is commonly called as and eats up bar, sealing was lost efficacy fast cause crude oil leakage.Common packing box promotes lower pressing cap and compresses the sealing of oil resistant rubber packing realization well head by being rotated down clamp nut.Because the elasticity of encapsulant is limited, when polished rod moves up and down in the packing inboard, the part that contacts with the polished rod surface can be worn and torn, and the supporting role of peripheral packing only depends on the very difficult gap that forms of will wearing and tearing of the downforce of piston to eliminate.Polished rod eccentric wear and to rock the sealing difficulty of well bigger, when having the gap between polished rod and the sealed packing, oil gas can be under the well head pressure effect along the gap of polished rod and packing to external leakage, the generation oil leak accident.The gap is big more, and wastage is big more, and it is frequent to cause packing to change, even will change packing in 1～2 day one time, has a strong impact on the extraction efficiency of operation.
The utility model content
The purpose of this utility model is to provide a kind of can avoid packing and polished rod and polished rod and Glan generation eccentric wear effectively, prolongs packing application life, and sealing performance is reliable, and packing overhauls conveniently production wellhead packing_seal device.
Realize that the technical scheme that above-mentioned purpose is taked is: this device is made up of automatic aligning mechanism and secondary seal assembly, the two interconnects by adjusting box cupling, wherein, automatic aligning mechanism comprises eccentric ball seat and the spherical ball joint that cooperatively interacts, and interconnect by the joint gland, the spherical ball joint is provided with eccentric step through-hole, seal is housed in the step through-hole, two-end part at seal is provided with packing follower, the secondary seal assembly has one and installs the sleeve that is connected with the spherical ball joint, be coated with the polished rod centralizer in this sleeve successively, sealed packing and compress Glan, an end that compresses Glan is provided with compression spring and spring capping.
Endoporus one end of described polished rod centralizer is the conical surface shape structure, and its tapering is 1:2.
Described seal adopts compression packing element seal.
Described sealed packing adopts the nylon 1010 product.
On described spherical ball joint and the polished rod centralizer O RunddichtringO is housed all.
The connecting portion of described spherical ball joint and polished rod centralizer is provided with dog screw.
The production wellhead packing_seal device of making according to such scheme, by automatic aligning mechanism, can adapt to polished rod any swing within the specific limits, avoid packing and polished rod and polished rod and Glan generation eccentric wear effectively, thereby prolonged more than 10 times the application life of packing; Centralizer adopts the inner conical surface design, only needs to add new packing after the packing wearing and tearing, need not take out old packing, and the sealing maintenance time is shortened greatly.
Packing adopts the nylon 1010 material, possesses intensity and less friction factor preferably, so both can not damage polished rod, reduces frictional resistance, also can reduce heating.Compared with prior art, it is reliable that this device has sealing performance, and maintenance period is long, and the upkeep operation time is short, advantages such as long service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Referring to Fig. 1, production wellhead packing_seal device of the present utility model, form by automatic aligning mechanism and secondary seal assembly, the two interconnects by adjusting box cupling 9, wherein, automatic aligning mechanism comprises eccentric ball seat 1 and the spherical ball joint 4 that cooperatively interacts, and interconnects by joint gland 2, can adapt to polished rod 17 sliding up and down of any swing position within the specific limits.On spherical ball joint 4, be provided with an eccentric step through-hole, be provided with compression packing element seal 5 in this step through-hole.The two-end part of sealing part is provided with packing follower 6, and packing element seal 5 is compressed, and packing element seal 5 and polished rod 17 are sealed and matched.The secondary seal assembly has a sleeve 12, and an end of this sleeve 12 installs with spherical ball joint 4 and is connected.Be coated with polished rod centralizer 10, sealed packing 11 successively in sleeve 12, compress Glan 13 and Glan pad 14, an end that compresses Glan 13 is provided with compression spring 15 and spring capping 16, makes sealed packing 11 be in the elastic compression state all the time.What the sealed packing 11 in this case adopted is the nylon 1010 product, nylon 1010 is a kind of novel polyamide kind of China's original creation, have good antifriction, wear-resisting and self lubricity, hygroscopicity is little than other nylon kinds, being suitable for humidity changes greatly, under unlubricated or few lubricated situation, rigidity, mechanical strength and dielectric stability are preferably arranged.And oil resistivity is good, and the self friction coefficient is lower under the prerequisite that has suitable hardness.Endoporus one end of described polished rod centralizer 10 is the conical surface shape structure, and its tapering is 1:2, and use hour indicator velamen attrition size decreases can be descending along its conical surface, therefore only needs to add new packing, need not take out old packing, can shorten to add the packing time.In order to strengthen the sealing of each member matching part, O RunddichtringO 3,7 is housed respectively on spherical ball joint 4 and polished rod centralizer 10.Connecting portion at spherical ball joint 4 and polished rod centralizer 10 is provided with dog screw 8, so that spherical ball joint 4 and polished rod centralizer 10 are adjusted being fixed after compressing by adjusting box cupling 9, prevent to become flexible.
Claims (6)
1. production wellhead packing_seal device, it is characterized in that: it is made up of automatic aligning mechanism and secondary seal assembly, the two interconnects by adjusting box cupling, wherein, automatic aligning mechanism comprises eccentric ball seat and the spherical ball joint that cooperatively interacts, and interconnect by the joint gland, the spherical ball joint is provided with eccentric step through-hole, seal is housed in the step through-hole, two-end part at seal is provided with packing follower, the secondary seal assembly has one and installs the sleeve that is connected with the spherical ball joint, installs successively in this sleeve by the polished rod centralizer, sealed packing and compress Glan, an end that compresses Glan is provided with compression spring and spring capping.
2. production wellhead packing_seal device according to claim 1 is characterized in that: endoporus one end of described polished rod centralizer is the conical surface shape structure, and its tapering is 1:2.
3. production wellhead packing_seal device according to claim 1 is characterized in that: described seal adopts compression packing element seal.
4. production wellhead packing_seal device according to claim 1 is characterized in that: described sealed packing adopts the nylon 1010 product.
5. production wellhead packing_seal device according to claim 1 is characterized in that: be equipped with the O RunddichtringO on described spherical ball joint and the polished rod centralizer.
6. production wellhead packing_seal device according to claim 1 is characterized in that: the connecting portion of described spherical ball joint and polished rod centralizer spherical ball joint and polished rod centralizer is provided with dog screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202082648U CN202090878U (en) | 2011-06-20 | 2011-06-20 | Oil extraction well mouth packing seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202082648U CN202090878U (en) | 2011-06-20 | 2011-06-20 | Oil extraction well mouth packing seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202090878U true CN202090878U (en) | 2011-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202082648U Expired - Fee Related CN202090878U (en) | 2011-06-20 | 2011-06-20 | Oil extraction well mouth packing seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202090878U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632120A (en) * | 2014-12-11 | 2015-05-20 | 中国石油天然气股份有限公司 | Elastic gland |
| CN113202440A (en) * | 2021-06-04 | 2021-08-03 | 江苏金石富源机械有限公司 | Oil extraction wellhead sealing device |
| CN113266701A (en) * | 2021-06-25 | 2021-08-17 | 江苏天通源环保装备有限公司 | Valve rod sealing device |
| CN114199730A (en) * | 2022-02-15 | 2022-03-18 | 中国科学院大气物理研究所 | Airtight packaging type multidirectional adjusting structure for laser calibration |
-
2011
- 2011-06-20 CN CN2011202082648U patent/CN202090878U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632120A (en) * | 2014-12-11 | 2015-05-20 | 中国石油天然气股份有限公司 | Elastic gland |
| CN113202440A (en) * | 2021-06-04 | 2021-08-03 | 江苏金石富源机械有限公司 | Oil extraction wellhead sealing device |
| CN113202440B (en) * | 2021-06-04 | 2023-02-28 | 江苏金石富源机械有限公司 | Oil extraction wellhead sealing device |
| CN113266701A (en) * | 2021-06-25 | 2021-08-17 | 江苏天通源环保装备有限公司 | Valve rod sealing device |
| CN114199730A (en) * | 2022-02-15 | 2022-03-18 | 中国科学院大气物理研究所 | Airtight packaging type multidirectional adjusting structure for laser calibration |
| CN114199730B (en) * | 2022-02-15 | 2022-05-27 | 中国科学院大气物理研究所 | Airtight packaging type multidirectional adjusting structure for laser calibration |
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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: 20111228 Termination date: 20120620 |