CN2599223Y - Wafer valve for oil field - Google Patents
Wafer valve for oil field Download PDFInfo
- Publication number
- CN2599223Y CN2599223Y CNU022929061U CN02292906U CN2599223Y CN 2599223 Y CN2599223 Y CN 2599223Y CN U022929061 U CNU022929061 U CN U022929061U CN 02292906 U CN02292906 U CN 02292906U CN 2599223 Y CN2599223 Y CN 2599223Y
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- CN
- China
- Prior art keywords
- valve
- valve seat
- seal ring
- ring
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a wafer valve for oil field, and is an improvement for a sealing structure between a valve seat and a valve unit. The wafer valve is provided with a valve unit, a valve seat and a valve wafer. A radial seal ring is arranged on the outer round neck shoulder of the valve seat. The radial seal ring is a U-shaped metal spring seal ring; the opening direction of a U-shaped slot is the same as the axial direction of the valve seat. The U-shaped slot of the U-shaped metal spring seal ring is provided with a stainless metal support ring. The end surface of the valve seat is formed by circular groove edges and a U-shaped end surface seal ring is arranged between the circular groove edges. towing to small torque of valve switches, the utility model has good sealing performance, in particular to stable sealing performance under high pressure and the valve unit is convenient to manufacture.
Description
Technical field
The utility model relates to a kind of valve, the dull and stereotyped valve that uses on particularly a kind of oil field.
Background technology
Be used in the dull and stereotyped valve in oil field, in drilling well, oil recovery process, along with the raising of operating efficiency, people wish that generally the switch moment of its valve is little, in light weight, long service life, and sealingly secure is reliable.The valve seat construction of existing flap type and sealing mainly are to utilize twice " O " the shape sealing ring on the valve seat cylindrical and the waveform spring bullet at valve seat rear portion to make valve seat, valve plate be adjacent to sealing.The valve of this hermetically-sealed construction exists following deficiency: the first, and when the valve entrance pressure, easily cause valve plate stressed big, valve switch moment is big, and the high pressure sealing performance instability, and assembling needs special tool; The second, " O " shape sealing ring is in the state of being squeezed for a long time, and is yielding aging, causes valve leak, reduces the application life of valve, takes apart and can cause the on-the-spot shut-down in oil field when reprocessing, and reduced operating efficiency; The 3rd, wavy spring is in confined state for a long time, easily causes elastic resilience to disappear, and valve is leaked under low-pressure state; The 4th, because the inner chamber of valve body is square, difficulty of processing is big.
Summary of the invention
Technical problem underlying to be solved in the utility model is, overcomes the deficiency of hermetically-sealed construction in the existing dull and stereotyped valve, and a kind of good seal performance, Oilfield Valve Plate easy to process are provided.
Technical solution of the present utility model is, is provided with valve body, valve seat, valve plate, and valve seat is located between valve body and the valve plate.The cylindrical neck shoulder of the valve seat that combines with valve body is provided with radial direction seal ring, radial direction seal ring is " U " shape metal spring sealing ring, the opening direction of " U " shape groove of its radial direction seal ring is consistent with the axial direction of valve seat, U " be provided with the stainless steel metal support ring in " U " shape groove of shape metal spring sealing ring.The end face of the valve seat that combines with valve body is made of the cannelure rib that the cross section is circular arc, is provided with end-face seal ring between the arc groove rib.
End-face seal ring between the valve seat end face arc groove rib also is middle " U " shape metal spring sealing ring that is provided with support ring.
The valve pocket of valve body is cylindrical valve pocket.
The utility model has the advantages that valve switch moment is little, good seal performance, particularly high pressure sealing performance are stable, and valve body is easy to process.1. adopt the braced structures of " U " shape metal spring sealing ring and stainless steel metal back-up ring on the cylindrical of valve seat and the end face respectively, under the state of self-excitation behind the valve entrance pressure, " U " shape circle Expansion sealing under the effect of back-up ring, and safe and reliable, omitted the wavy spring of valve seat rear portion axial seal; 2. the end face of valve seat is made as circular arc, and making valve seat is the line contact with the end face that contacts of valve body, during high pressure, promptly forms metallic seal between valve seat and valve body, thereby has improved the reliability of end face seal; 3. because the lifting surface area of " U " shape circle is little, so the switch moment of valve is little; 4. the inner chamber of valve body is cylindrical cavity, and is easy to process; 5. because the seat cavity gap of the cylindrical of valve seat and valve body is big, so very convenient when dismounting.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described in further detail:
The utility model is provided with valve body 4, valve seat 7, valve plate 8, and valve seat 7 is located between valve body 4 and the valve plate 8.
The neck shoulder excircle of the valve seat 7 that combines with valve body 4 is provided with radial direction seal ring 5, radial direction seal ring 5 is " U " shape metal spring sealing ring, the opening direction of " U " shape groove of its radial direction seal ring 5 is consistent with the axial direction of valve seat 7, is provided with stainless steel metal support ring 6 in " U " shape open slot of " U " shape metal spring sealing ring 5.When valve under the state of self-excitation behind the entrance pressure, " U " shape sealing ring 5 Expansion sealing under the effect of support ring 6.This seal 5 can be realized the high-low pressure radial seal between valve seat 7 and the valve body 4 effectively.
The end face of the valve seat 7 that combines with valve body 4 is made of the cannelure rib 1 that the cross section is two road circular arcs, it between the two road arc groove ribs 1 seal groove of putting end-face seal ring 2, end-face seal ring 2 also is " U " shape metal spring sealing ring, is provided with nonmetal support ring 3 in " U " shape groove of its end-face seal ring 2.This seal 2 can be realized the axial end high-low pressure sealing between valve plate 8, valve seat 7, the valve body 4 effectively.The end face structure of the smooth circular arc 1 in two roads of valve seat 7 makes end face under high pressure conditions, can form the metallic seal between valve seat 7 and the valve body 4, makes the sealing performance of valve more reliable.
For ease of processing, the valve pocket 9 of valve body 4 is made as cylindrical valve pocket.The utility model is owing to be provided with the neck shoulder structure that can put radial direction seal ring 5 on excircle, thereby strengthened the seat cavity gap of valve seat 7 outer circles and valve body 4, make valve seat 7 dress, tear open very convenient laborsaving, during installation, need only clap valve seat 7 with have gentle hands, can load onto, during dismounting, need only gently dial with screwdriver and can pull down valve seat 7.
Claims (3)
1, Oilfield Valve Plate, be provided with valve body, valve seat, valve plate, valve seat is located between valve body and the valve plate, it is characterized in that: the cylindrical neck shoulder of the valve seat that combines with valve body is provided with radial direction seal ring, radial direction seal ring is " U " shape metal spring sealing ring, the opening direction of " U " shape groove of its radial direction seal ring is consistent with the axial direction of valve seat, U " be provided with the stainless steel metal support ring in " U " shape groove of shape metal spring sealing ring; The end face of the valve seat that combines with valve body is made of the cannelure rib that the cross section is circular arc, is provided with end-face seal ring between the arc groove rib.
2, Oilfield Valve Plate as claimed in claim 1 is characterized in that: the end-face seal ring between the valve seat end face arc groove rib also is middle " U " shape metal spring sealing ring that is provided with support ring.
3, Oilfield Valve Plate as claimed in claim 1 or 2 is characterized in that: the valve pocket of valve body is cylindrical valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU022929061U CN2599223Y (en) | 2002-12-23 | 2002-12-23 | Wafer valve for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU022929061U CN2599223Y (en) | 2002-12-23 | 2002-12-23 | Wafer valve for oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599223Y true CN2599223Y (en) | 2004-01-14 |
Family
ID=34151732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU022929061U Expired - Lifetime CN2599223Y (en) | 2002-12-23 | 2002-12-23 | Wafer valve for oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2599223Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832119A (en) * | 2010-03-18 | 2010-09-15 | 江苏咸中石油机械有限公司 | Low-consumption flat valve |
| CN101979819A (en) * | 2010-10-01 | 2011-02-23 | 江苏信得石油机械有限公司 | Embedded high-pressure side door floating sealing device |
-
2002
- 2002-12-23 CN CNU022929061U patent/CN2599223Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832119A (en) * | 2010-03-18 | 2010-09-15 | 江苏咸中石油机械有限公司 | Low-consumption flat valve |
| CN101832119B (en) * | 2010-03-18 | 2013-01-23 | 江苏咸中石油机械有限公司 | Low-consumption flat valve |
| CN101979819A (en) * | 2010-10-01 | 2011-02-23 | 江苏信得石油机械有限公司 | Embedded high-pressure side door floating sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Xinde Petroleum Machinery Co., Ltd. Assignor: Xinde Petroleum Machinery Plant, Yancheng City Contract fulfillment period: 2008.5.18 to 2013.5.18 Contract record no.: 2009320000510 Denomination of utility model: Wafer valve for oil field Granted publication date: 20040114 License type: Exclusive license Record date: 20090327 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.5.18 TO 2013.5.18; CHANGE OF CONTRACT Name of requester: JIANGSU XINDE PETROLEUM MECHANICAL CO., LTD. Effective date: 20090327 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121223 Granted publication date: 20040114 |