CN202325402U - Blowout-preventing plug valve - Google Patents
Blowout-preventing plug valve Download PDFInfo
- Publication number
- CN202325402U CN202325402U CN2011204920404U CN201120492040U CN202325402U CN 202325402 U CN202325402 U CN 202325402U CN 2011204920404 U CN2011204920404 U CN 2011204920404U CN 201120492040 U CN201120492040 U CN 201120492040U CN 202325402 U CN202325402 U CN 202325402U
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- China
- Prior art keywords
- ball seat
- valve base
- housing
- casing
- blowout
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to an oil field well repair operation device, in particular to a blowout-preventing plug valve for solving the problem of sealing blowout prevention of an inner cavity of an oil pipe, which comprises a cylindrical casing and a ball seat installed in the casing, wherein an inner oil pipe buckle and an outer oil pipe buckle are respectively arranged at two ends of the casing, the spherical ball seat is located between the inner oil pipe buckle and the outer oil pipe buckle, a through hole is arranged on the ball seat, an operation shaft is inserted on the casing, and the inner end of the operation shaft is connected onto the ball seat. The blowout-preventing plug valve is characterized in that an upper valve seat and a lower valve seat are installed in an inner cavity of the casing, respectively located on two sides of the ball seat, matched with the spherical surface of the ball seat and in cylindrical shapes coaxial with the casing, and one of the upper valve seat and the lower valve seat is fixedly connected onto the inner wall of the casing, and the other of the upper valve seat and the lower valve seat is connected onto the inner wall of the casing in floating mode through a spring. The blowout-preventing plug valve can be connected with a pipe column in a well at the wellhead, can be opened and closed timely and conveniently, prevents blowout and is simple in structure and convenient to use.
Description
Technical field
The utility model relates to a kind of at oil well repairing operation equipment, is a kind of blowout prevention plug valve that solves oil pipe bore seal blowout prevention problem specifically.
Background technology
At present, when oil well repairing operation, for preventing blowout, the annular space of tubing string and sleeve pipe and for the sealing blowout prevention problem of tubing string inner chamber, adopts the valve class that is connected with tubing string to seal blowout prevention realizing blowout prevention in the preventer sealed well that has been widely used.Because of in operation, need often opening and closing, so need a kind of safe, reliable, durable in use, the blowout prevention plug valve device being convenient to construct that be convenient to be connected with tubing string to tubing string.
Summary of the invention
The problem that the utility model will solve provide a kind of simple in structure, easy to use, with well in the blowout prevention plug valve that can be easy to open and close that is connected at well head of tubing string.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The described blowout prevention plug valve of the utility model comprise the pipe shape housing, be installed in the ball seat in the housing, the two ends of housing are respectively arranged with inner oil tube button and outer tubing thread, ball seat inner oil tube buckle and outside between the tubing thread; Said ball seat is spherical; Ball seat is provided with through hole, is fitted with control shaft on the housing, and the inner of said control shaft is connected on the ball seat; It is characterized in that: upper valve base, lower valve base are installed in the inner chamber of housing; Upper valve base and lower valve base lay respectively at the both sides of ball seat, and upper valve base and lower valve base cooperate with the ball seat sphere, and said upper valve base and lower valve base are the pipe shape coaxial with housing; One of them is fixedly connected on upper valve base and lower valve base on the inwall of housing, and another is connected on the inwall of housing through spring floating.
The inwall of housing is provided with internal thread and step; Internal thread and step lay respectively at the both sides of ball seat; The clamp nut that has through hole is fixedly mounted in the housing through internal thread; One of them is installed in upper valve base and lower valve base between clamp nut and the ball seat, and the end face of the valve seat between another step and the ball seat is provided with the ring-spring groove, in the said spring groove spring is installed.
After adopting technique scheme, this blowout prevention plug valve can be connected at well head with tubing string in the well, in time, open and close easily, prevents blowout, and is simple in structure, easy to use.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
The specific embodiment:
Below in conjunction with accompanying drawing and practical implementation measure the utility model is done to describe further.
As shown in Figure 1; The described blowout prevention plug valve of the utility model comprise the pipe shape housing 1, be installed in the ball seat 5 in the housing 1; The two ends of housing 1 are respectively arranged with inner oil tube button 12 and outer tubing thread 8, and said inner oil tube button 12 is arranged on internal thread or external screw thread on housing 1 inwall or the outer wall with outer tubing thread 8.Ball seat 5 inner oil tube buckle 12 and outside between the tubing thread 8, said ball seat 5 is spherical, ball seat 5 is provided with through hole; Be fitted with control shaft 4 on the housing 1; The inner of said control shaft 4 is connected on the ball seat 5, rotates control shaft 4 and can drive ball seat 5 rotations, makes the through hole on the ball seat 5 change direction.
Certainly, also can upper valve base 3 be installed in the housing 1 through spring floating, and adopt clamp nut to be fixedly mounted in the housing 1 lower valve base 6.Its structural principle is the same.
Be provided with sealing ring 9,10,11 in the junction of each moving component.
During use, the two ends of housing 1 are connected oil pipe or drilling rod through inner oil tube button 12 with outer tubing thread 8.Outer tubing thread is connected with the interior tubing string of well, and the inner oil tube button is the connector of reserving for supporting other instrument.
Claims (2)
1. blowout prevention plug valve; Comprise the pipe shape housing (1), be installed in the ball seat (5) in the housing (1), the two ends of housing (1) are respectively arranged with inner oil tube button (12) and outer tubing thread (8), ball seat (5) is positioned at inner oil tube and buckles between (12) and the outer tubing thread (8); Said ball seat (5) is spherical; Ball seat (5) is provided with through hole, is fitted with control shaft (4) on the housing (1), and the inner of said control shaft (4) is connected on the ball seat (5); It is characterized in that: upper valve base (3), lower valve base (6) are installed in the inner chamber of housing (1); Upper valve base (3) and lower valve base (6) lay respectively at the both sides of ball seat (5), and upper valve base (3) and lower valve base (6) cooperate with ball seat (5) sphere, and said upper valve base (3) and lower valve base (6) are the pipe shape coaxial with housing (1); One of them is fixedly connected on upper valve base (3) and lower valve base (6) on the inwall of housing (1), and another floats through spring (7) and is connected on the inwall of housing (1).
2. blowout prevention plug valve according to claim 1; It is characterized in that: the inwall of housing (1) is provided with internal thread and step; Internal thread and step lay respectively at the both sides of ball seat (5); The clamp nut (2) that has through hole is fixedly mounted in the housing (1) through internal thread; One of them is installed in upper valve base (3) and lower valve base (6) between clamp nut (2) and the ball seat (5), and another end face that is positioned at the valve seat between step and the ball seat (5) is provided with the ring-spring groove, and spring (7) is installed in the said spring groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011204920404U CN202325402U (en) | 2011-12-01 | 2011-12-01 | Blowout-preventing plug valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011204920404U CN202325402U (en) | 2011-12-01 | 2011-12-01 | Blowout-preventing plug valve |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202325402U true CN202325402U (en) | 2012-07-11 |
Family
ID=46437384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011204920404U Expired - Fee Related CN202325402U (en) | 2011-12-01 | 2011-12-01 | Blowout-preventing plug valve |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202325402U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107387002A (en) * | 2017-08-31 | 2017-11-24 | 成都西南石大石油工程技术有限公司 | A kind of Double channel plug valve |
CN110094181A (en) * | 2018-01-30 | 2019-08-06 | 东营市创元石油机械制造有限公司 | The efficient plug valve of oil drilling |
-
2011
- 2011-12-01 CN CN2011204920404U patent/CN202325402U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107387002A (en) * | 2017-08-31 | 2017-11-24 | 成都西南石大石油工程技术有限公司 | A kind of Double channel plug valve |
CN110094181A (en) * | 2018-01-30 | 2019-08-06 | 东营市创元石油机械制造有限公司 | The efficient plug valve of oil drilling |
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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: 20120711 Termination date: 20161201 |