CN202249949U - External-pressure opening type reverse circulation valve - Google Patents
External-pressure opening type reverse circulation valve Download PDFInfo
- Publication number
- CN202249949U CN202249949U CN 201120389268 CN201120389268U CN202249949U CN 202249949 U CN202249949 U CN 202249949U CN 201120389268 CN201120389268 CN 201120389268 CN 201120389268 U CN201120389268 U CN 201120389268U CN 202249949 U CN202249949 U CN 202249949U
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- China
- Prior art keywords
- piston head
- outer sleeve
- sleeve body
- reverse circulation
- circulation valve
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of a reverse circulation well killing tool, and provides an external-pressure opening type reverse circulation valve. The reverse circulation valve comprises an outer casing body, an upper joint, a piston head, a cutting nail and a compression spring, wherein a first step is fixed at the lower end of the outer casing body; a bulge is arranged at the middle of the outside of the piston head; the upper end of the inside of the outer casing body is fixedly installed with the upper joint; the bulge is fixedly connected with the outer casing body through the cutting nail; a cavity is formed among the piston head, the upper joint and the outer casing body above the bulge; at least one radial through hole corresponding to the cavity is arranged at the upper part of the outer casing body; and the compression spring is installed in the outer casing body between the piston head and the first step. The external-pressure opening type reverse circulation valve provided by the utility model has the advantages that: the structure is reasonable and compact, the use is convenient, the opening and closing of the radial through hole and the inside of the outer casing body are realized by the action of the piston head and the outer casing body in combination with the cutting nail and the compression spring, the operation is convenient and the accuracy of the oil pressure and casing pressure monitoring data is improved.
Description
Technical field
the utility model relates to anti-circulation kill-job technical field of tools, is a kind of external pressure open-type reverse circulation valve.
Background technology
existing at present reverse circulation valve can only disposable opening, and can not close after opening.This just causes in follow-up oil recovery process, and annular space and oil pipe internal communication can't accurately be carried out the monitoring of oil pressure and casing pressure, brings very big inconvenience for normal (gas) operation of recovering the oil.
Summary of the invention
the utility model provides a kind of external pressure open-type reverse circulation valve, has overcome the deficiency of above-mentioned prior art, and it can effectively solve existing reverse circulation valve can only disposable opening, the problem that can not close after the unlatching.
The technical scheme of
the utility model realizes through following measure: a kind of external pressure open-type reverse circulation valve comprises outer sleeve body, top connection, piston head, shear pin and compression spring; The lower end of body is fixed with first step outside; Outer middle side part at piston head has boss; The inner top side and the top connection of outer sleeve body are fixedly installed togather, and boss and outer sleeve body are fixed together through shear pin, form cavity between piston head, top connection and the outer sleeve body of boss top; At least one and the corresponding radial direction through hole of cavity are arranged at the top of body outside, and the compression spring is installed in the outer sleeve body between piston head and the first step.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
The lower inside of
above-mentioned body outside is fixed with second step and first step from top to bottom successively; The internal diameter of second step is greater than the internal diameter of first step; The lower end of piston head is sleeved on the second step; Form annular seal space, the pressure relief vent that has at least one to communicate in the bottom of piston head between the outer sleeve body of piston head and second step top with annular seal space.
above-mentioned outer sleeve body and top connection can be fixed together through screw thread.
are above-mentioned can be equipped with sealing ring between top connection and outer sleeve body, between the upper end of piston head and top connection, sealing ring can be installed, and between boss and outer sleeve body, sealing ring can be installed.
the utility model reasonable and compact in structure; Easy to use, cooperate shear pin and compression spring to use with outer sleeve body through piston head, realize the opening and closing that radial direction through hole and outer sleeve body are inner; Make things convenient for operation, improved the accuracy of oil pressure and casing pressure monitored data.
Description of drawings
accompanying drawing 1 is looked the half section structural representation for the master of the utility model most preferred embodiment.
Coding in
accompanying drawing is respectively: 1 is outer sleeve body, and 2 are top connection, and 3 is piston head, and 4 is shear pin, and 5 are the compression spring; 6 is first step, and 7 is boss, and 8 is cavity, and 9 is radial direction through hole; 10 is second step, and 11 is annular seal space, and 12 is pressure relief vent, and 13 is sealing ring.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description, as: the position relation of forward and backward, upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
shown in accompanying drawing 1, this external pressure open-type reverse circulation valve comprises outer sleeve body 1, top connection 2, piston head 3, shear pin 4 and compression spring 5; The lower end of body 1 is fixed with first step 6 outside; Outer middle side part at piston head 3 has boss 7; The inner top side of outer sleeve body 1 and top connection 2 are fixedly installed togather, and boss 7 is fixed together through shear pin 4 with outer sleeve body 1, form cavity 8 between the piston head 3 of boss 7 tops, top connection 2 and the outer sleeve body 1; At least one and cavity 8 corresponding radial direction through hole 9 are arranged at the top of body 1 outside, and compression spring 5 is installed in the outer sleeve body 1 between piston head 3 and the first step 6.Like this, be the compression spring 5 that compresses shape through installing in the outer sleeve body 1 between piston head 3 and first step 6, piston head 3 is fixedly connected through shear pin 4 with outer sleeve body 1; When annular space builds the pressure; The top of force boss 7 moves down, and piston head 3 axial compressions compression spring 5 communicates the radial direction through hole on the outer sleeve body 19 with outer sleeve body 1 inside, after rushing down pressure; Piston head 3 comes back to original state under the active force of compression spring 5, realize the purpose of opening and closing.
Can according to actual needs above-mentioned external pressure open-type reverse circulation valve be done further to optimize or/and improve:
are shown in accompanying drawing 1; The lower inside of body 1 is fixed with second step 10 and first step 6 from top to bottom successively outside; The internal diameter of second step 10 is greater than the internal diameter of first step 6; The lower end of piston head 3 is sleeved on the second step 10, forms annular seal space 11, the pressure relief vent 12 that has at least one to communicate with annular seal space 11 in the bottom of piston head 3 between the outer sleeve body 1 of piston head 3 and second step 10 tops.
shown in accompanying drawing 1, outer sleeve body 1 and top connection 2 are fixed together through screw thread, like this, are convenient to installation and removal top connection 2.
are shown in accompanying drawing 1; Between top connection 2 and outer sleeve body 1, sealing ring 13 is installed; Between the upper end of piston head 3 and top connection 2, sealing ring 13 is installed; Between boss 7 and outer sleeve body 1, sealing ring 13 is installed, like this, is convenient to sealing between piston head 3 and top connection 2 and the outer sleeve body 1.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
Claims (5)
1. an external pressure open-type reverse circulation valve is characterized in that comprising outer sleeve body, top connection, piston head, shear pin and compression spring; The lower end of body is fixed with first step outside; Outer middle side part at piston head has boss; The inner top side and the top connection of outer sleeve body are fixedly installed togather, and boss and outer sleeve body are fixed together through shear pin, form cavity between piston head, top connection and the outer sleeve body of boss top; At least one and the corresponding radial direction through hole of cavity are arranged at the top of body outside, and the compression spring is installed in the outer sleeve body between piston head and the first step.
2. external pressure open-type reverse circulation valve according to claim 1; The lower inside that it is characterized in that outer sleeve body is fixed with second step and first step from top to bottom successively; The internal diameter of second step is greater than the internal diameter of first step; The lower end of piston head is sleeved on the second step, forms annular seal space, the pressure relief vent that has at least one to communicate with annular seal space in the bottom of piston head between the outer sleeve body of piston head and second step top.
3. external pressure open-type reverse circulation valve according to claim 1 and 2 is characterized in that outer sleeve body and top connection are fixed together through screw thread.
4. external pressure open-type reverse circulation valve according to claim 1 and 2 is characterized in that between top connection and the outer sleeve body sealing ring being installed, and between the upper end of piston head and top connection, sealing ring is installed, and between boss and outer sleeve body, sealing ring is installed.
5. external pressure open-type reverse circulation valve according to claim 3 is characterized in that between top connection and the outer sleeve body sealing ring being installed, and between the upper end of piston head and top connection, sealing ring is installed, and between boss and outer sleeve body, sealing ring is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120389268 CN202249949U (en) | 2011-10-13 | 2011-10-13 | External-pressure opening type reverse circulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120389268 CN202249949U (en) | 2011-10-13 | 2011-10-13 | External-pressure opening type reverse circulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249949U true CN202249949U (en) | 2012-05-30 |
Family
ID=46111208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120389268 Expired - Fee Related CN202249949U (en) | 2011-10-13 | 2011-10-13 | External-pressure opening type reverse circulation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249949U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541685A (en) * | 2013-10-08 | 2014-01-29 | 安东石油技术（集团）有限公司 | Reverse circulation valve allowing opening and closing |
| CN103541686A (en) * | 2013-10-08 | 2014-01-29 | 安东石油技术（集团）有限公司 | Switchable reverse circulation valve |
| CN105736711A (en) * | 2016-04-18 | 2016-07-06 | 兰州兰石集团有限公司 | Novel external control type hydraulic circulating valve |
| WO2017077345A1 (en) * | 2015-11-06 | 2017-05-11 | Intelligent Drilling Tools Limited | Circulation subassembly |
| CN112360374A (en) * | 2020-12-01 | 2021-02-12 | 中国石油天然气股份有限公司 | Reverse circulation valve capable of being opened repeatedly and using method thereof |
-
2011
- 2011-10-13 CN CN 201120389268 patent/CN202249949U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541685A (en) * | 2013-10-08 | 2014-01-29 | 安东石油技术（集团）有限公司 | Reverse circulation valve allowing opening and closing |
| CN103541686A (en) * | 2013-10-08 | 2014-01-29 | 安东石油技术（集团）有限公司 | Switchable reverse circulation valve |
| WO2017077345A1 (en) * | 2015-11-06 | 2017-05-11 | Intelligent Drilling Tools Limited | Circulation subassembly |
| US10648261B2 (en) | 2015-11-06 | 2020-05-12 | Intelligent Drilling Tools Limited | Circulation subassembly |
| CN105736711A (en) * | 2016-04-18 | 2016-07-06 | 兰州兰石集团有限公司 | Novel external control type hydraulic circulating valve |
| CN112360374A (en) * | 2020-12-01 | 2021-02-12 | 中国石油天然气股份有限公司 | Reverse circulation valve capable of being opened repeatedly and using method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20161013 |