CN102134980B - Device for sealing plate valve through pretightening - Google Patents
Device for sealing plate valve through pretightening Download PDFInfo
- Publication number
- CN102134980B CN102134980B CN201010100557.4A CN201010100557A CN102134980B CN 102134980 B CN102134980 B CN 102134980B CN 201010100557 A CN201010100557 A CN 201010100557A CN 102134980 B CN102134980 B CN 102134980B
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- China
- Prior art keywords
- plate valve
- valve seat
- torsion spring
- pin
- pretightening
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Abstract
The invention provides a device for sealing a plate valve through pretightening. The device comprises the plate valve, a plate valve seat, a torsion spring, a pin, an inner barrel, an outer barrel and a locating pin, wherein the plate valve seat is connected with the outer barrel by a thread; the axis of rotation of the plate valve coincides with the center line of the torsion spring; the plate valve is connected with the plate valve seat by the pin; the locating pin is arranged at one end of the pin; the torsion spring has double-side elasticity; the free ends at the two sides of the torsion spring are inserted into deep holes reserved on the plate valve seat; and the middle extension section of the torsion spring is contacted with the upper end face of the plate valve. The device has the following beneficial effects: before the plate valve closes, the elasticity acts on the upper end face of the plate valve to realize automatic closing of the plate valve; and after the plate valve closes, the lower end face of the plate valve is contacted with the narrow ring surface protruding from the middle of the plate valve seat, and as the contact area of the ring surface is small and the contact surface of the plate valve and the plate valve seat slants relative to the plate valve seat, the impact of the impurities on the contact surface is reduced and sealing is easier to realize, thus ensuring the self-tightness of the plate valve and improving the reliability of other operations.
Description
Technical field
The present invention relates to a kind of gas hydrates coring operation device, belong to the special operation of new forms of energy exploration and development.
Background technology
The circular flap valve that carries out at present coring operation use is to rely on torsion spring and self gravitation is closed and pretension.The taper seat of closing rear plate valve under torsion spring elastic force, plate valve self gravitation and the effect of sealed compartment internal pressure with plate valve base inner wall close contact, realize sealing.But due between the two, for face contact, have unavoidably the foreign material such as mud to be clipped on contact surface in the process of coring, make sealing effectiveness not good, pressurize success rate is low, can not meet actual needs.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of plate valve and solves pretension sealing problem, and when using plate valve operation, plate valve, under the stopping of heat-insulation pressure keeping cylinder, is placed between urceolus and heat-insulation pressure keeping cylinder.Coring completely, after carrying on heat-insulation pressure keeping cylinder, plate valve cuts out under torsion spring and self gravitation effect, contact with the narrow anchor ring protruding in the middle of plate valve seat, tilt, and realizes and sealing.The object of this invention is to provide a kind of device for sealing plate valve through pretightening.
For addressing the above problem, a kind of device for sealing plate valve through pretightening of the present invention comprises, plate valve, plate valve seat, torsion spring, pin, inner core, urceolus and alignment pin.Plate valve seat and urceolus are threaded connection, and plate valve rotation overlaps with torsion spring center line, and plate valve is connected with plate valve seat by pin, and pin one end is provided with alignment pin.Torsion spring is made as bilateral elastic-type, makes plate valve uniform stressed, and torsion spring bilateral free end inserts in the reserved deep hole of plate valve seat, and middle extending segment contacts with plate valve upper surface.When plate valve is opened, torsion spring produces elastic force, and when plate valve cuts out, elastic force acts on plate valve upper surface, realizes and automatically closing.After plate valve cuts out, plate valve lower surface contacts with the narrow anchor ring protruding in the middle of plate valve seat, in the middle of plate valve seat, be designed to protrude narrow anchor ring, because anchor ring contact area is little, and plate valve becomes oblique with the plate contact surface of valve seat with plate valve seat, makes contact surface affected by foreign material and reduces, more easily realize sealing, guaranteed plate valve from close property, improve the reliability of other operations.
Accompanying drawing explanation
Fig. 1. a kind of device for sealing plate valve through pretightening schematic diagram
1. inner core 2. plate valve 3. torsion spring 4. alignment pin 5. pin 6. urceolus
7. plate valve seat
The specific embodiment
Now in conjunction with Figure of description, the invention will be further described.
When adopting the present invention to carry out coring operation, plate valve seat 7 is threaded connection with urceolus 6, and plate valve 2 rotations overlap with torsion spring 3 center lines, and plate valve 2 is connected with plate valve seat 7 by pin 5, and pin 5 one end are fixing with alignment pin 4.Torsion spring 3 is made as bilateral elastic-type, makes plate valve 2 uniform stresseds, and torsion spring 3 bilateral free ends insert in the reserved deep hole of plate valve seat 7, and middle extending segment contacts with plate valve 2 upper surfaces.When plate valve 2 is opened, torsion spring 3 produces elastic force, and when plate valve 2 cuts out, elastic force acts on plate valve 2 upper surfaces, realizes and automatically closing.After plate valve 2 cuts out, plate valve 2 lower surfaces contact with the narrow anchor ring protruding in the middle of plate valve seat 7, are designed to protrude narrow anchor ring in the middle of plate valve seat 7, because anchor ring contact area is little, and plate valve 2 is oblique with 7 one-tenth of plate valve seats with plate valve seat 7 contact surfaces, make contact surface affected by foreign material and reduce, more easily realize sealing.Guaranteed plate valve 2 from close property, improve the reliability of other operations.
Claims (3)
1. a device for sealing plate valve through pretightening comprises, plate valve (2), plate valve seat (7), torsion spring (3), pin (5), inner core (1), urceolus (6) and alignment pin (4), it is characterized in that: plate valve seat (7) is threaded connection with urceolus (6), plate valve (2) rotation overlaps with torsion spring (3) center line, plate valve (2) is connected with plate valve seat (7) by pin (5), pin (5) one end is provided with alignment pin (4), torsion spring (3) is made as bilateral elastic-type, torsion spring (3) bilateral free end inserts in the reserved deep hole of plate valve seat (7), middle extending segment contacts with plate valve (2) upper surface, plate valve (2) becomes oblique with the contact surface of plate valve seat (7) with plate valve seat (7).
2. a kind of device for sealing plate valve through pretightening according to claim 1, after it is characterized in that plate valve (2) cuts out, plate valve (2) lower surface contacts with the narrow anchor ring protruding in the middle of plate valve seat (7).
3. a kind of device for sealing plate valve through pretightening according to claim 1, is characterized in that being designed to protrude narrow anchor ring in the middle of plate valve seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010100557.4A CN102134980B (en) | 2010-01-25 | 2010-01-25 | Device for sealing plate valve through pretightening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010100557.4A CN102134980B (en) | 2010-01-25 | 2010-01-25 | Device for sealing plate valve through pretightening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102134980A CN102134980A (en) | 2011-07-27 |
| CN102134980B true CN102134980B (en) | 2014-07-16 |
Family
ID=44294888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010100557.4A Active CN102134980B (en) | 2010-01-25 | 2010-01-25 | Device for sealing plate valve through pretightening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102134980B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443061B (en) * | 2014-09-28 | 2017-10-10 | 中国石油化工集团公司 | Big orifice coring tool lower end pressure seal mechanism |
| CN107366540B (en) * | 2017-08-17 | 2024-06-04 | 北京探矿工程研究所 | Arc plate valve type sealing device |
| CN109113610A (en) * | 2018-08-13 | 2019-01-01 | 四川大学 | Core fidelity cabin |
| CN108952608B (en) * | 2018-08-13 | 2023-06-23 | 四川大学 | Automatic trigger butt joint opening turning plate structure |
| CN108895168B (en) * | 2018-08-13 | 2023-10-03 | 四川大学 | Lower end sealing structure of pressure maintaining cylinder |
| CN109505993B (en) | 2018-11-08 | 2023-07-07 | 深圳大学 | Rock core barrel sealing structure capable of increasing sealing specific pressure |
| CN113738298B (en) * | 2021-09-10 | 2022-04-26 | 中国地质大学（北京） | Pressure-maintaining coring device |
| CN113982515B (en) * | 2021-10-28 | 2022-07-15 | 中国地质大学（北京） | Pressure maintaining coring device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1536743A (en) * | 1975-04-10 | 1978-12-20 | Dresser Ind | Apparatus for providing a packaged core |
| US4142594A (en) * | 1977-07-06 | 1979-03-06 | American Coldset Corporation | Method and core barrel apparatus for obtaining and retrieving subterranean formation samples |
| CN102182454A (en) * | 2011-04-12 | 2011-09-14 | 吉林大学 | Mechanism for quickly forming ice valve and improving strength of same |
| CN102409998A (en) * | 2011-10-28 | 2012-04-11 | 中国海洋石油总公司 | Downhole safety valve |
-
2010
- 2010-01-25 CN CN201010100557.4A patent/CN102134980B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1536743A (en) * | 1975-04-10 | 1978-12-20 | Dresser Ind | Apparatus for providing a packaged core |
| US4142594A (en) * | 1977-07-06 | 1979-03-06 | American Coldset Corporation | Method and core barrel apparatus for obtaining and retrieving subterranean formation samples |
| CN102182454A (en) * | 2011-04-12 | 2011-09-14 | 吉林大学 | Mechanism for quickly forming ice valve and improving strength of same |
| CN102409998A (en) * | 2011-10-28 | 2012-04-11 | 中国海洋石油总公司 | Downhole safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102134980A (en) | 2011-07-27 |
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