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CN202325402U - Blowout-preventing plug valve - Google Patents

Blowout-preventing plug valve Download PDF

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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
Authority
CN
China
Prior art keywords
ball seat
valve base
housing
casing
blowout
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 - Fee Related
Application number
CN2011204920404U
Other languages
Chinese (zh)
Inventor
蒋连全
王辉
赵法武
徐密
陈晗光
张兴瑞
刘新忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Linqu Qiancheng Petroleum Machinery Co Ltd
Original Assignee
Shandong Linqu Qiancheng Petroleum Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Linqu Qiancheng Petroleum Machinery Co Ltd filed Critical Shandong Linqu Qiancheng Petroleum Machinery Co Ltd
Priority to CN2011204920404U priority Critical patent/CN202325402U/en
Application granted granted Critical
Publication of CN202325402U publication Critical patent/CN202325402U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

The blowout prevention plug valve
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.
Upper valve base 3, lower valve base 6 are installed in the inner chamber of housing 1, and upper valve base 3 and lower valve base 6 lay respectively at the both sides of ball seat 5, and upper valve base 3 cooperates with ball seat 5 spheres with lower valve base 6, and said upper valve base 3 and lower valve base 6 are the pipe shape coaxial with housing 1.The inwall of housing 1 is provided with internal thread and step, and internal thread and step lay respectively at the both sides of ball seat 5, and the clamp nut 2 that has through hole is fixedly mounted in the housing 1 through internal thread, and upper valve base 3 is installed between clamp nut 2 and the ball seat 5.At the opposite side of ball seat 5, the end face of lower valve base 6 is provided with the ring-spring groove, and spring 7 is installed in the said spring groove, and the outside of spring 7 is resisted against on the step.
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.
Upper valve base 3 is formed the valve seal body with ball seat 5 and lower valve base 6.On lower valve base 6 and the contacted end face of housing inner face, be provided with one group of spring 7, under the effect of clamp nut 2, spring makes the valve seal body have pretightning force, can remedy rigging error and mechanical wear, makes upper valve base 3, lower valve base 6 keep sealing with ball seat 5.
Control shaft 4 and ball seat 5 are connected through link slot, and slewing maneuver axle 4 can make ball seat 5 rotate, and the endoporus direction of ball seat 5 is reached axially or radially, realized the purpose of opening and closing.

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.
CN2011204920404U 2011-12-01 2011-12-01 Blowout-preventing plug valve Expired - Fee Related CN202325402U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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