CN202348225U - Kelly bar plug valve - Google Patents
Kelly bar plug valve Download PDFInfo
- Publication number
- CN202348225U CN202348225U CN2011205211405U CN201120521140U CN202348225U CN 202348225 U CN202348225 U CN 202348225U CN 2011205211405 U CN2011205211405 U CN 2011205211405U CN 201120521140 U CN201120521140 U CN 201120521140U CN 202348225 U CN202348225 U CN 202348225U
- Authority
- CN
- China
- Prior art keywords
- valve
- kelly bar
- bar plug
- valve seat
- 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 - Fee Related
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Abstract
The utility model discloses a kelly bar plug valve. The kelly bar plug valve comprises a valve body, an upper valve seat and a lower valve seat, wherein the valve body is of a tubular structure which runs through top and bottom; the upper valve seat and the lower valve seat are arranged in the valve body; a cylindrical sealing body is arranged between the upper valve seat and the lower valve seat; the cylindrical sealing body is provided with a through hole; one end of the cylindrical sealing body is provided with a valve rod in a connecting manner while the other end of the cylindrical sealing body is provided with a bulge; the valve body is provided with a concave cavity which is matched with the bulge; the valve rod passes through the valve body wall and is connected with a rotary nut; and the kelly bar plug valve is sealed through the cylindrical sealing body. Without other pre-tightening device, problems of dead clamping, untight closing and the like caused by the accumulation of drilling fluid impurities in a sliding gap do not exist; the kelly bar plug valve can be opened or closed conveniently and easily under the whole working conditions of drilling and repairing a well; and the kelly bar plug valve, disclosed by the utility model, can realize reliable sealing under low pressure and high pressure working conditions of the whole working conditions.
Description
Technical field
The utility model relates to the blowout prevention instrument in a kind of drilling tool, is specifically related to a kind of kelly cock.
Background technology
Kelly cock is the hand control valve in the drill string circulating system, and kelly cock can play the high pressure sealing effect, is exclusively used in the emergency that prevents blowout.Kelly cock divides top kelly cock and bottom kelly cock.The top kelly cock is left-handed connection; The bottom kelly cock is that dextrorotation connects.The top kelly cock is connected between water tap lower end and the kelly bar upper end.The bottom kelly cock is connected between the upper end of kelly bar lower end and drilling rod or drilling rod protection joint.
In recent years, seal failure between spool and the valve seat frequently takes place in plug valve, and rotating dog can not rotate, the valve seat thorn is bad; The spool long-term immobilization, the sealing surface of seat corrosion is serious, and knob can not rotate; The fracture of plug valve body; Can't realize switch motion of plug valve or the like, produce to the oil field and bring enormous economic loss, when serious even bring out gas blowout accident.
Because what traditional plug valve adopted is the structure of ball-type, the phenomenon of not opening after often occurring when tubing string pressure is big closing, the workman just can't carry out next step operation like this, thereby can form safe hidden danger, causes the generation of accident.
Present kelly cock is made up of valve body, block, inner layer ring, circlip, upper valve base, lower valve base, a plurality of little spring, valve ball, knob, shifting block, sealing ring; Its structure, complex process; Part is many, and the dismounting difficulty is made troubles to use when assembling, maintaining.
The utility model content
The utility model has overcome the deficiency of prior art, and a kind of simple and reasonable, good sealing effect, cock valve switching flexible movements, long service life, safe and reliable kelly cock are provided.
For solving above-mentioned technical problem, the utility model adopts following technical scheme:
A kind of kelly cock comprises valve body, upper valve base and lower valve base, the tubular structure of said valve body for running through up and down; Said upper valve base and lower valve base are arranged in the valve body; Be provided with the cylindrical seal body between said upper valve base and the lower valve base, said cylindrical seal body is provided with through hole, and said cylindrical seal body one end is connected with valve rod; The said cylindrical seal body other end is provided with convexity, and the cavity that cooperates with this convexity is set on the said valve body; Said valve rod passes valve body wall, and is connected with swivel nut.
In order better to realize the utility model, on the basis of technique scheme, make further technological improvement below:
As preferably: the cooperation place between above-mentioned valve rod and the valve body wall is provided with first sealing ring.
As preferably: above-mentioned valve rod and swivel nut are through being threaded.
As preferably: be provided with track pin in the above-mentioned cavity.
The utility model can also be following technical scheme:
The circumference of above-mentioned convexity is provided with second sealing ring.
Compared with prior art, the beneficial effect of the utility model is:
In the technical scheme of the utility model,
(1) realize the sealing of kelly cock through the cylindrical seal body, therefore, do not have other pre-tightening apparatus, so do not exist drilling fluid impurity in glade plane space, to accumulate to cause stuck, problem such as be not closed completely;
(2) can conveniently under the whole operating modes of drilling and repairing well easily open and close;
(3) realize under the full operating mode positiver sealing under low pressure, the high pressure operating mode;
(4) this kelly bar plug valve fluid resistance is little, simple and compact for structure, sealing is reliable, applied widely, and flexible operation is quick.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Wherein, the pairing name of the Reference numeral in the accompanying drawing is called:
The 1-valve body, the 2-upper valve base, the 3-lower valve base, 4-cylindrical seal body, the 5-through hole, the 6-valve rod, 7-is protruding, 8-cavity, 9-swivel nut, 10-first sealing ring, 11-track pin, 12-second sealing ring.
The specific embodiment
Below in conjunction with embodiment the utility model is done to specify further, but the embodiment of the utility model is not limited thereto.
As shown in Figure 1; A kind of kelly cock comprises valve body 1, upper valve base 2 and lower valve base 3, the tubular structure of said valve body 1 for running through up and down; Said upper valve base 2 is arranged in the valve body 1 with lower valve base 3; It is characterized in that: be provided with cylindrical seal body 4 between said upper valve base 2 and the lower valve base 3, said cylindrical seal body 4 is provided with through hole 5, and said cylindrical seal body 4 one ends are connected with valve rod 6; Said cylindrical seal body 4 other ends are provided with convexity 7, and the cavity 8 that cooperates with this convexity 7 is set on the said valve body 1; Said valve rod 6 passes valve body 1 wall, and is connected with swivel nut 9.
Cooperation place between above-mentioned valve rod 6 and valve body 1 wall is provided with first sealing ring 10.
Above-mentioned valve rod 6 and swivel nut 9 are through being threaded.
Be provided with track pin 11 in the above-mentioned cavity 8.
Above-mentioned protruding 7 circumference is provided with second sealing ring 12.
In sum, just can realize the utility model preferably.
Claims (5)
1. kelly cock; Comprise valve body (1), upper valve base (2) and lower valve base (3); The tubular structure of said valve body (1) for running through up and down, said upper valve base (2) and lower valve base (3) are arranged in the valve body (1), it is characterized in that: be provided with cylindrical seal body (4) between said upper valve base (2) and the lower valve base (3); Said cylindrical seal body (4) is provided with through hole (5); Said cylindrical seal body (4) one ends are connected with valve rod (6), and said cylindrical seal body (4) other end is provided with convexity (7), and said valve body (1) is gone up the cavity (8) that cooperates with this convexity (7) is set; Said valve rod (6) passes valve body (1) wall, and is connected with swivel nut (9).
2. kelly cock according to claim 1 is characterized in that: the cooperation place between said valve rod (6) and valve body (1) wall is provided with first sealing ring (10).
3. kelly cock according to claim 1 is characterized in that: said valve rod (6) and swivel nut (9) are through being threaded.
4. kelly cock according to claim 1 is characterized in that: be provided with track pin (11) in the said cavity (8).
5. kelly cock according to claim 1 is characterized in that: the circumference of said convexity (7) is provided with second sealing ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205211405U CN202348225U (en) | 2011-12-14 | 2011-12-14 | Kelly bar plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205211405U CN202348225U (en) | 2011-12-14 | 2011-12-14 | Kelly bar plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348225U true CN202348225U (en) | 2012-07-25 |
Family
ID=46537234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205211405U Expired - Fee Related CN202348225U (en) | 2011-12-14 | 2011-12-14 | Kelly bar plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348225U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703749A (en) * | 2015-07-23 | 2017-05-24 | 牡丹江鑫北方石油钻具有限责任公司 | Novel plug valve with lubricating and filling functions |
-
2011
- 2011-12-14 CN CN2011205211405U patent/CN202348225U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703749A (en) * | 2015-07-23 | 2017-05-24 | 牡丹江鑫北方石油钻具有限责任公司 | Novel plug valve with lubricating and filling functions |
| CN106703749B (en) * | 2015-07-23 | 2019-02-12 | 牡丹江鑫北方石油钻具有限责任公司 | A kind of Novel plug valve with lubrication and filling function |
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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 |
Granted publication date: 20120725 Termination date: 20161214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |