CN202882858U - Elastic shear pin device - Google Patents
Elastic shear pin device Download PDFInfo
- Publication number
- CN202882858U CN202882858U CN 201220533852 CN201220533852U CN202882858U CN 202882858 U CN202882858 U CN 202882858U CN 201220533852 CN201220533852 CN 201220533852 CN 201220533852 U CN201220533852 U CN 201220533852U CN 202882858 U CN202882858 U CN 202882858U
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- China
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- support
- shear pin
- gland
- hole
- spring
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- Expired - Fee Related
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Abstract
The utility model discloses an elastic shear pin device which comprises a gland, wherein the outer circle of the gland is fixedly connected with a wear-resisting lining through threads, two parallel gland holes are formed in the outer end face of the gland along the axial direction, the inner end face of the gland is an oblique plane, a support is sleeved on the surface of the inner circle of the gland, the outer side of one end, in contact with the gland, of the support is an oblique plane, the support and the gland are in press fit through the oblique planes, a through hole is drilled in the other end of the support, the support is fixedly connected with the wear-resisting lining through a positioning pin in the through hole, and a step-shaped flat-bottom hole is formed in the middle of the support. A shear pin is sleeved on a shaft center of the support in a sliding mode, wherein one end, exposed from the support, of the shear pin is cut to be an oblique plane, a spring installing hole is drilled in the other end of the shear pin, a spring is installed in the spring installing hole, two ends of the spring abuts are located between the shear pin and the wear-resisting lining in a pressing mode, a clamping groove is arranged in the outer periphery edge of the spring installing hole end of the shear pin, a clamping ring is installed in the clamping groove, and the shear pin is clamped on the surface of the step-shaped flat-bottom hole in the support through the clamping ring. The elastic shear pin device is simple in structure, convenient to install and use, and good in controllability.
Description
Technical field
The utility model belongs to petroleum gas drilling and extracting equipment technical field, relates to a kind of elastic shear pin assembly.
Background technology
Require anti-wearing liner to be fixed on underwater well head in front in the oil and gas well drilling process, prevent from losing because of play about it abrasionproof effect of design.In existing anti-wearing liner design scheme, the general employing is assembled to the shear pin interference on the anti-wearing liner outer wall, thereby is fixed on the underwater wellhead.
The existing this following deficiency that is designed with: the one, shear pin is fixed on the anti-wearing liner, need very large power that it is transferred to underwater well head in front during lower anti-wearing liner, can and might cut off underwater wellhead inwall injury in this process, shear pin loses fixation; The 2nd, the size of the shear pin shear strength that this interference is installed is not easy control.
Summary of the invention
The purpose of this utility model provides a kind of elastic shear pin assembly, solve existing wear-resistant sleeve and easily scratch well head head inwall with shear pin and might cut off and lose fixation, and the shear strength size is not allowed manageable problem.
The technical scheme that the utility model adopts is, a kind of elastic shear pin assembly comprises gland, and the gland cylindrical is fixedly connected with anti-wearing liner by screw thread, and the gland outer face is parallel vertically to have two gland holes, and inner face is the inclined-plane;
The gland internal circular surfaces is set with support, the end outside that support contacts with gland is the inclined-plane, adopt the inclined-plane pressing between support and the gland, the support other end is drilled with through hole, support is fixedly connected with anti-wearing liner by the alignment pin in the through hole, be the stepped ramp type flat-bottom hole in the middle of the support, the axle center slip cap of support is equipped with shear pin;
The end-grain cutting that shear pin exposes support becomes the inclined-plane, the shear pin other end is drilled with spring mounting hole, spring is installed in the spring mounting hole, both ends of the spring withstands between shear pin and the anti-wearing liner, this spring fitting nose end excircle edge is provided with draw-in groove, in this draw-in groove snap ring is installed, shear pin is stuck in support stepped ramp type flat-bottom hole basal surface by snap ring.
The beneficial effects of the utility model are, and are simple in structure, easy to install; Economize on resources, all can reuse except shear pin belongs to expendable part, miscellaneous part; The shear strength of shear pin is not affected by installation process, can be handling good, can determine its installation in position or taking-up state by monitoring that hook carries to change, and adapt to the requirement of underwater operation fully; In addition, of many uses, dependable performance not only can be applied on the anti-wearing liner, also can be applied on the kit of other subsea equipments, for the ocean equipment Development provides important parts, has broad application prospects.
Description of drawings
Fig. 1 is the structural representation of elastic shear pin assembly of the present utility model;
Fig. 2 is in working order schematic diagram of elastic shear pin assembly of the present utility model.
Among the figure, 1. gland, 2. support, 3. shear pin, 4. snap ring, 5. alignment pin, 6. spring, 7. gland hole, 8. anti-wearing liner, 9. underwater well head, 10. annular space seal assembly, 11. casing hangers.
The specific embodiment
As shown in Figure 1, the structure of elastic shear pin assembly of the present utility model is, comprise gland 1, gland 1 cylindrical is provided with screw thread, be used for being threaded with anti-wearing liner 8, by screw thread gland 1 inner all devices be fixed on anti-wearing liner 8 outer walls, gland 1 outer face is parallel vertically to have two gland holes 7, gland hole 7 is used for insertion tool to tighten gland 1, and gland 1 inner face is the inclined-plane; Gland 1 internal circular surfaces is set with support 2, the end outside that support 2 contacts with gland 1 is the inclined-plane, adopt the inclined-plane pressing between support 2 and the gland 1, support 2 other ends are drilled with through hole, support 2 is fixedly connected with anti-wearing liner 8 by the alignment pin 5 in the through hole, realizes the location on anti-wearing liner 8, is the stepped ramp type flat-bottom hole in the middle of the support 2, the axle center of support 2 is the hexagon inner via hole, is set with shear pin 3 in this hexagon inner via hole; Shear pin 3 external surfaces are equilateral hexagon, the end-grain cutting that shear pin 3 exposes support 2 becomes the inclined-plane, shear pin 3 other ends are drilled with spring mounting hole (as spring mounting seat), spring 6 is installed in the spring mounting hole, spring 6 two ends withstand between shear pin 3 and the anti-wearing liner 8, this spring fitting nose end excircle edge is provided with draw-in groove, and snap ring 4 is installed in this draw-in groove, and shear pin 3 is stuck in support 2 stepped ramp type flat-bottom hole basal surfaces by snap ring 4; Anti-wearing liner 8 outsides have screwed hole, and base cone angle, hole is zero and in centre and the respectively again perforate of limit of bottom.
Support 2 is fixed on the anti-wearing liner 8 by alignment pin 5, reaches limit bracket 2 around the purpose of its axle center rotation.
The operating principle of the utility model device is:
With reference to Fig. 2, when needs are lowered to anti-wearing liner 8, mentioning anti-wearing liner 8 by special-purpose running tool then delivers in the underwater well head 9 by sending into tubing string, instrument bottom hung constant weight drill string, by Action of Gravity Field lentamente with anti-wearing liner 8 to transferring, because there is the inclined-plane in shear pin 3 bottoms, when running into reducing, shear pin 3 first Compress Springs 6 enter between elastic shear pin assembly and the anti-wearing liner 8 along support, continue to transfer, arrive casing hanger 11 rear spring 6 shear pin 3 is ejected, shear pin 3 snaps in the annular groove of annular space seal assembly 10, at last anti-wearing liner 8 is discharged from running tool, regain running tool.Running tool also can use the utility model elastic shear pin assembly to hang anti-wearing liner 8, can not be more than the quantity on the anti-wearing liner when selecting quantity otherwise be difficult to discharge anti-wearing liner 8 after arriving design attitude, can not very little so that anti-wearing liner 8 can not be sling.
When needs are regained anti-wearing liner 8, send into tubing string by transferring, send into the recovery instrument, until instrument snaps in the recovery draw-in groove of anti-wearing liner 8, slowly upwards carry recovery instrument certain distance, the monitoring hook carries variation, if the multiple that overload and value reach shear pin 3 design shear strengths and its quantity on anti-wearing liner 8 occurs, just the shear pin 3 in anti-wearing liner 8 outsides has been cut off in explanation, continues upwards to submit into tubing string and recovery instrument, regains anti-wearing liner 8, if do not monitor obvious overload, again transfer the recovery instrument, transfer the position according to transferring the tubing string computational tool, high-volume be as the criterion to reach the recovery draw-in groove that blocks anti-wearing liner 8 down, repeat again upwards to put forward the process that recovery instrument monitoring hook carries variation, occur until cut off the indication of anti-wearing liner 8 outside shear pins 3, continue upwards to submit into tubing string and recovery instrument, regain anti-wearing liner 8.
Claims (3)
1. elastic shear pin assembly, it is characterized in that: comprise gland (1), gland (1) cylindrical is fixedly connected with anti-wearing liner (8) by screw thread, and gland (1) outer face is parallel two the gland holes (7) that have vertically, and inner face is the inclined-plane;
Gland (1) internal circular surfaces is set with support (2), the end outside that support (2) contacts with gland (1) is the inclined-plane, adopt the inclined-plane pressing between support (2) and the gland (1), support (2) other end is drilled with through hole, support (2) is fixedly connected with anti-wearing liner (8) by the alignment pin in the through hole (5), be the stepped ramp type flat-bottom hole in the middle of the support (2), the axle center slip cap of support (2) is equipped with shear pin (3);
The end-grain cutting that shear pin (3) exposes support (2) becomes the inclined-plane, shear pin (3) other end is drilled with spring mounting hole, spring (6) is installed in the spring mounting hole, spring (6) two ends withstand between shear pin (3) and the anti-wearing liner (8), this spring fitting nose end excircle edge is provided with draw-in groove, snap ring (4) is installed in this draw-in groove, and shear pin (3) is stuck in support (2) stepped ramp type flat-bottom hole basal surface by snap ring (4).
2. elastic shear pin assembly according to claim 1 is characterized in that: described shear pin (3) and fit system between the support (2) are that hex surface cooperates and is slidingly connected.
3. elastic shear pin assembly according to claim 1 is characterized in that: described shear pin (3) and fit system between the support (2) are that circular keyway mode cooperates and is slidingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533852 CN202882858U (en) | 2012-10-18 | 2012-10-18 | Elastic shear pin device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533852 CN202882858U (en) | 2012-10-18 | 2012-10-18 | Elastic shear pin device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202882858U true CN202882858U (en) | 2013-04-17 |
Family
ID=48074298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220533852 Expired - Fee Related CN202882858U (en) | 2012-10-18 | 2012-10-18 | Elastic shear pin device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202882858U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518244A (en) * | 2013-10-09 | 2016-04-20 | 哈利伯顿能源服务公司 | Dual-configuration shear bolt |
| US10597978B2 (en) | 2016-12-28 | 2020-03-24 | Halliburton Energy Services, Inc. | Hydraulically assisted shear bolt |
| CN113047802A (en) * | 2021-04-20 | 2021-06-29 | 江苏宏泰石化机械有限公司 | Double-insurance wellhead device wear-resistant sleeve and taking and delivering tool |
| CN114485295A (en) * | 2022-01-06 | 2022-05-13 | 南京理工大学 | Fuse shear pin rigid safety mechanism with retractable shear surface |
-
2012
- 2012-10-18 CN CN 201220533852 patent/CN202882858U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105518244A (en) * | 2013-10-09 | 2016-04-20 | 哈利伯顿能源服务公司 | Dual-configuration shear bolt |
| CN105518244B (en) * | 2013-10-09 | 2017-06-23 | 哈利伯顿能源服务公司 | Double configuration shearing bolts |
| US10597978B2 (en) | 2016-12-28 | 2020-03-24 | Halliburton Energy Services, Inc. | Hydraulically assisted shear bolt |
| CN113047802A (en) * | 2021-04-20 | 2021-06-29 | 江苏宏泰石化机械有限公司 | Double-insurance wellhead device wear-resistant sleeve and taking and delivering tool |
| CN114485295A (en) * | 2022-01-06 | 2022-05-13 | 南京理工大学 | Fuse shear pin rigid safety mechanism with retractable shear surface |
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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: 20130417 Termination date: 20151018 |
|
| EXPY | Termination of patent right or utility model |