CN201474665U - Kelly plug valve - Google Patents
Kelly plug valve Download PDFInfo
- Publication number
- CN201474665U CN201474665U CN2009202304754U CN200920230475U CN201474665U CN 201474665 U CN201474665 U CN 201474665U CN 2009202304754 U CN2009202304754 U CN 2009202304754U CN 200920230475 U CN200920230475 U CN 200920230475U CN 201474665 U CN201474665 U CN 201474665U
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- valve
- valve body
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- spring
- valve ball
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Abstract
A Kelly plug valve relates to a plug valve for oil field and comprises a valve body provided with a valve chamber; wherein an upper and a lower valve base are arranged in the valve chamber, a valve ball is disposed between the two valve bases, one end of a button is plugged in a slot on the valve ball and the other end is arranged in a button mounting hole at the side surface of the valve body, a step surface is provided in the valve body, a spring is arranged between the step surface and the lower valve base, the outer end face of the upper valve base above the valve ball is provided with a cylinder gland which is connected in the valve body via screws, and the center of the gland is provided with a through hole. The Kelly plug valve with modified structure has simple production process, simple assembly and disassembly, and uniform pressure on the valve bases and the valve ball.
Description
Technical field
The utility model relates to the plug valve that a kind of oil field is used, particularly a kind of technical field of kelly cock.
Background technology
Present kelly cock is made up of valve body, block, inner layer ring, circlip, upper valve base, lower valve base, 8 little springs, valve ball, knob, shifting block, sealing rings, its structure, complex process, part is many, and the dismounting difficulty is made troubles to use when assembling, maintaining.
The utility model content
For overcoming structure, complex process, part is many, the problem of assembling, dismounting difficulty, and the utility model provides a kind of novel kelly cock.
The utility model comprises the valve body that is provided with valve pocket, and upper and lower two valve seats are set in valve body, between described two valve seats a valve ball is set, and knob one end is inserted in the groove of valve ball, and the other end is arranged in the knob installing hole of valve body side; In the described valve body step surface is set, a spring is set between step surface and lower valve base; Upper valve base outer face on valve ball is provided with cylindrical pressure cap, and described pressure cap is threaded in the valve body, and described pressure cap center is provided with through hole.
Such improvement makes structure of the present utility model, technology simple, assembling, convenient disassembly, and valve ball, valve seat are stressed evenly.
In addition, spring can be spiral compression spring or dish spring or ripple spring.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Among the figure, 1, valve body, 2, pressure cap, 3, upper valve base, 4, sealing ring, 5, knob, 6, sealing ring, 7, valve ball, 8, spring, 9, lower valve base, 10, sealing ring, 11, step surface.
The specific embodiment
As shown in the figure, the utility model comprises the valve body 1 that is provided with valve pocket, upper valve base 3, valve ball 7, knob 5, sealing ring 6 and a spring 8, knob 5 one ends are inserted in the groove of valve ball 7, the other end is arranged in knob 5 installing holes of valve body 1 side, step surface 11 is set in the valve body 1, in the valve pocket of valve body 1, valve ball 7 two ends are provided with respectively, lower valve base 3,9, a spring 8 is set between the step surface 11 of lower valve base 9 and valve body 1, the outer face of upper valve base 3 is provided with annular pressure cap 2, the inner surface on valve body 1 top is provided with internal thread, pressure cap 2 external surfaces are provided with external screw thread, pressure cap 2 is threaded on the internal thread of valve body 1, pressure cap 2 and last, lower valve base 3,9 centers are provided with through hole.
In addition, spring 8 can be spiral compression spring or dish spring or ripple spring.
Upper and lower valve seat 3,9 is washer type respectively, is respectively the concave surface that matches with valve ball 7 at the centre bore end face towards the upper and lower valve seat 3,9 of valve ball 7.Be respectively equipped with seal groove on the external cylindrical surface of upper and lower valve seat 3,9, sealing ring 4,10 is set respectively in the groove.
Upper kelly cock valve, joint screw thread are left-handed drilling rod button (left-hand thread), are connected to the kelly bar upper end.Lower kelly cock, joint screw thread are dextrorotation drilling rod button (right-hand thread), are connected to the kelly bar lower end.The oil pipe plug valve, joint screw thread is the dextrorotation tubing thread, is connected to the oil pipe upper end.
When creeping into operation, the center of kelly cock is unimpeded, does not influence the normal circulation of mud.When blowout takes place when, with wellhead blowout preventor group sealing well head annular space, simultaneously as required, use special spanner that knob is revolved to turn 90 degrees and can close valve ball on the one hand, stop well liquid along scurrying on the drilling tool hydrophthalmia, with protection hose and standpipe pipeline.In the time of need opening, use special spanner that knob can be opened valve ball to opposite spin 90 degree again.
Claims (3)
1. kelly cock, comprise the valve body that is provided with valve pocket, it is characterized in that in valve body, being provided with upper and lower two valve seats, between described two valve seats, a valve ball is set, knob one end is inserted in the groove of valve ball, and the other end is arranged in the knob installing hole of valve body side; In the described valve body step surface is set, a spring is set between step surface and lower valve base; Upper valve base outer face on valve ball is provided with cylindrical pressure cap, and described pressure cap is threaded in the valve body, and described pressure cap center is provided with through hole.
2. kelly cock according to claim 1, it is characterized in that upper and lower valve seat is washer type respectively, centre bore end face towards the upper and lower valve seat of valve ball is respectively the concave surface that matches with valve ball, be respectively equipped with seal groove on the external cylindrical surface of described upper and lower valve seat, sealing ring is set respectively in the groove.
3. kelly cock according to claim 1 and 2 is characterized in that spring is spiral compression spring or dish spring or ripple spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202304754U CN201474665U (en) | 2009-08-14 | 2009-08-14 | Kelly plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202304754U CN201474665U (en) | 2009-08-14 | 2009-08-14 | Kelly plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474665U true CN201474665U (en) | 2010-05-19 |
Family
ID=42410913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202304754U Expired - Lifetime CN201474665U (en) | 2009-08-14 | 2009-08-14 | Kelly plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201474665U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409993A (en) * | 2010-09-17 | 2012-04-11 | 杨桂青 | Special blowout-control tool in steam-driving well oil pipe |
| CN104763375A (en) * | 2014-01-04 | 2015-07-08 | 盐城市华谊石油机械有限公司 | High-strength low-torque plug valve |
| CN105003682A (en) * | 2015-07-30 | 2015-10-28 | 盐城市大冈石油工具厂有限责任公司 | Pressure-regulating self-opened plug valve |
-
2009
- 2009-08-14 CN CN2009202304754U patent/CN201474665U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409993A (en) * | 2010-09-17 | 2012-04-11 | 杨桂青 | Special blowout-control tool in steam-driving well oil pipe |
| CN104763375A (en) * | 2014-01-04 | 2015-07-08 | 盐城市华谊石油机械有限公司 | High-strength low-torque plug valve |
| CN105003682A (en) * | 2015-07-30 | 2015-10-28 | 盐城市大冈石油工具厂有限责任公司 | Pressure-regulating self-opened plug valve |
| CN105003682B (en) * | 2015-07-30 | 2017-06-30 | 盐城市大冈石油工具厂有限责任公司 | Pressure regulation self-opening type plug valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
|
| CX01 | Expiry of patent term |