CN201306149Y - Wellhead safety hydraulic cutoff device - Google Patents
Wellhead safety hydraulic cutoff device Download PDFInfo
- Publication number
- CN201306149Y CN201306149Y CNU2008202230347U CN200820223034U CN201306149Y CN 201306149 Y CN201306149 Y CN 201306149Y CN U2008202230347 U CNU2008202230347 U CN U2008202230347U CN 200820223034 U CN200820223034 U CN 200820223034U CN 201306149 Y CN201306149 Y CN 201306149Y
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- CN
- China
- Prior art keywords
- hydraulic cylinder
- well head
- flashboard
- valve
- hydraulic pressure
- 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 wellhead safety hydraulic cutoff device, belonging to the technical field of the design and the manufacturing of integrative wellhead cutoff valve and actuating mechanism thereof. The wellhead safety hydraulic cutoff device comprises an actuator and a plate gate valve, wherein a hydraulic cylinder is arranged on the upper end of the actuator, and an oil tank is arranged on the lower end; the plate gate valve is arranged on the lower end of the actuator; and a sheath is arranged on the upper end of the hydraulic cylinder. The utility model solves the problem that the H2S and the CO2 which are contained in natural gas corrode the actuator and control elements, provides the wellhead safety hydraulic cutoff device which integrates a cutoff mechanism and the actuating mechanism, and has the characteristics that the wellhead safety cutoff is realized; the urgent safety relief is implemented; remote measuring and remote control are realized by a connected computer.
Description
Technical field:
A kind of well head safe hydraulic pressure cut-off apparatus, the safety that is used for the petroleum gas well site is blocked, and relates to the design and manufacturing technology field of integrated cut-out cock of petroleum gas well head and executing agency thereof.
Background technology:
The well head safe cutting device is the important safety means in petroleum gas well site, when causing pressure reduction or fire alarm etc. to happen suddenly dangerous situation when generation gas transmission line pressure superelevation after the throttling of oil gas field well head one-level or because of the pipeline explosion, in order to prevent the further expansion of dangerous situation, reach the purpose of protection wellsite facility and personnel's life security, all need to close automatically rapidly well head, the equipment of realizing this emergency cut-off well head is exactly the well head safe cutting device;
It is pneumatic and surge two types that existing well head safe cutting device is divided into: pneumatic well head safe cutting device is that natural gas by the well site is as carrying out source of the gas, advantage is that actuator is active in one's movements, shortcoming is: since be with natural gas as drive medium, and the H in the natural gas
2S and CO
2Medium easily produces corrosion to actuator, control element, and work is had a strong impact on; Hydraulic pressure well head safe cutting device be with hydraulic oil as driving force, can avoid and H
2S and CO
2Directly contact, still, prior art is split type because of executing agency and controlling organization, is connected by hydraulic line between the two, therefore causes on-the-spot urgent time to chopping longer; The existing in addition pneumatic or well head safe cutting device that surges only can be implemented promptly to block, and can not implement emergency safety and release.
Goal of the invention: the purpose of this utility model is at the deficiencies in the prior art, according to incorporate design, provides a kind of integrated well head safe hydraulic pressure cut-off apparatus that blocks with executing agency.
The utility model is achieved in that a kind of well head safe hydraulic pressure cut-off apparatus, comprise actuator and flat gate valve, it is characterized in that: the upper end of described actuator is a hydraulic cylinder, and the lower end is a fuel tank, flat gate valve is arranged on the lower end of actuator, is provided with sheath in the upper end of hydraulic cylinder;
Be provided with valve position indicating arm and piston in described hydraulic cylinder, the valve position indicating arm is connected the upper surface of piston, and the upper surface of hydraulic cylinder is passed in the upper end of valve position indicating arm, and the lower end of piston connects valve rod;
Be provided with spring and spring holder in described fuel tank, the upper end of spring holder is enclosed within the cylindrical of hydraulic cylinder lower end, and the lower end of spring holder is supported with spring;
Upper side at described hydraulic cylinder is provided with oil-in, is provided with oil-out in the lower end side of described fuel tank;
Described flat gate valve comprises bonnet,, valve rod, valve body, valve seat, flashboard, and the through hole on the flashboard leaves the upper end at flashboard, and the through hole on the flashboard also can leave the lower end at flashboard;
The sheath that described hydraulic cylinder upper end is provided with is provided with valve position sensor;
The oil-in that described hydraulic implement cylinders upper side is provided with is connected with the pouring orifice of external control mechanism;
The oil-out that described fuel tank lower end is provided with links to each other with the inlet of external control mechanism oil pump;
Described hydraulic cylinder and fuel tank are by screwed connection;
Advantage of the present utility model and beneficial effect are: promptly be provided with spring again as fuel reserve tank in the fuel tank that the actuator lower end is provided with, can reach a structure purpose double-duty, because it is very near with the hydraulic cylinder distance on its top, can also when promptly blocking or promptly release, realize the purpose of the hydraulic oil fast return of driven plunger, have short characteristics actuation time of blocking; The valve position sensor that is provided with can connect electronic monitor, so that realize the telemetry and telecommand of external computer system.
Description of drawings:
Fig. 1 is the utility model mounting structure schematic diagram.
The specific embodiment:
Provide embodiment of the present utility model below in conjunction with accompanying drawing, the utility model comprises actuator and flat gate valve, it is characterized in that: the upper end of described actuator is a hydraulic cylinder 2, the lower end is a fuel tank 6, hydraulic cylinder 2 and fuel tank 6 are by screwed connection, flat gate valve is arranged on the lower end of actuator, is provided with sheath 18 in the upper end of hydraulic cylinder 2; Be provided with valve position indicating arm 3 and piston 4 in hydraulic cylinder 2, valve position indicating arm 3 is connected the upper surface of piston 4, and the upper surface of hydraulic cylinder 2 is passed in the upper end of valve position indicating arm 3, and the lower end of piston 4 connects valve rod 8; Be provided with spring 5 and spring holder 16 in fuel tank 6, the upper end of spring holder 16 is enclosed within the cylindrical of hydraulic cylinder lower end, and the lower end of spring holder 16 is supported with spring 5; Upper side at hydraulic cylinder 2 is provided with oil-in 17, is provided with oil-out 15 in the lower end side of fuel tank 6; Described flat gate valve comprises bonnet, 7, valve rod 8, valve body 9, valve seat 10, flashboard 11, and the through hole on the flashboard 11 leaves in the upper end of flashboard 11, and the through hole on the flashboard 11 also can leave the lower end at flashboard 11; The sheath 18 that hydraulic cylinder 2 upper ends are provided with is provided with valve position sensor 1; The oil-in 17 that hydraulic implement cylinders 2 upper side are provided with is connected with the pouring orifice of external control mechanism 13, and the oil-out 15 that described fuel tank 6 lower ends are provided with links to each other with the oil pump 12 of external control mechanism 13.
Operation of the present utility model: opening in the flashboard upper end with the valve plate of flat gate valve is example, when the well site is normally moved, oil pump 12 by external control mechanism 13 front ends of outer setting pressurizes the hydraulic oil in the fuel tank 6, the oil-in 17 that is provided with by hydraulic cylinder 2 upper side injects hydraulic cylinder 2, under high pressure, the elastic force that piston 4 in the hydraulic cylinder 2 overcomes spring 5 moves downward, drive valve rod 8 simultaneously, valve position indicating arm 3 moves downward, it is descending to promote flashboard 11, because the through hole on the flashboard 11 leaves in flashboard 11 upper ends, therefore the following enforcement flat gate valve of flashboard 11 is in open mode, and the gas of well head is normally moved; Because valve position indicating arm 3 is descending, make valve position sensor 1 that signal is transferred to outside watch-dog 14, and show running status, at this moment, the well site fluid pressure warning device is in opens running status;
Of the present utility modelly promptly block operation: when promptly blocking purposes, need to adopt the flashboard perforate to be arranged on the flat gate valve of flashboard upper end the utility model; When the well site pressure superelevation of gas transmission line or ultralow, fire alarm takes place or finds emergency by electronic monitor, just need fluid pressure warning device to realize blocking fast; The course of work is: outside controlling organization 13 starts, make the hydraulic oil of piston 4 tops in the hydraulic cylinder 2 directly return in the fuel tank 6 of lower end by tube connector, because the outflow of piston 4 top hydraulic oil, piston 4 just moves up under the promotion of spring 5 fast, and drive valve rod 8, flashboard 11 and valve position indicating arm 3 move upward, because the perforate on the flashboard is arranged on the upper end of flashboard, so, when flashboard moves upward, passage has just been closed, reach promptly blocking fast of well site fluid pressure warning device, because valve position indicating arm 3 is up, during through valve position sensor 1, just be detected, and show valve closing on the electronic monitor externally 14, the state that passage blocks;
The operation that the utility model is promptly released: when promptly releasing purposes, need to adopt flashboard 11 perforates to be arranged on the flap type of flashboard 11 lower ends the utility model; When being in, the well head passage closes and when need implementing promptly to release fast, external control mechanism 13 starts, the hydraulic oil that makes piston 4 tops in the hydraulic cylinder 2 is in connecting line directly returns the fuel tank 6 of lower end, in the hydraulic cylinder 2 hydraulic oil flow downwards, cause piston 4 tops to lose support force, therefore piston 4 moves up under resetting of spring 5 promotes fast, drive valve rod 8, flashboard 11 and valve position indicating arm 3 move upward, because the perforate on the flashboard is arranged on the lower end of flashboard, so, when flashboard moves upward, passage has just been opened, can reach promptly releasing fast of well site fluid pressure warning device, owing to the up of valve position indicating arm 3 monitored, so externally can show the state of releasing on the electronic monitor 14.
Claims (9)
1. a well head safe hydraulic pressure cut-off apparatus comprises actuator and flat gate valve, it is characterized in that: the upper end of described actuator is a hydraulic cylinder, and the lower end is a fuel tank, and flat gate valve is arranged on the lower end of actuator, is provided with sheath in the upper end of hydraulic cylinder.
2. well head safe hydraulic pressure cut-off apparatus according to claim 1, it is characterized in that: in described hydraulic cylinder, be provided with valve position indicating arm and piston, the valve position indicating arm is connected the upper surface of piston, and the upper surface of hydraulic cylinder is passed in the upper end of valve position indicating arm, and the lower end of piston connects valve rod.
3. well head safe hydraulic pressure cut-off apparatus according to claim 1 is characterized in that: be provided with spring and spring holder in described fuel tank, the upper end of spring holder is enclosed within the cylindrical of hydraulic cylinder lower end, and the lower end of spring holder is supported with spring.
4. well head safe hydraulic pressure cut-off apparatus according to claim 1 is characterized in that: the upper side at described hydraulic cylinder is provided with oil-in, is provided with oil-out in the lower end side of described fuel tank.
5. well head safe hydraulic pressure cut-off apparatus according to claim 1, it is characterized in that: described flat gate valve comprises bonnet,, valve rod, valve body, valve seat, flashboard, through hole on the flashboard leaves the upper end at flashboard, and the through hole on the flashboard also can leave the lower end at flashboard.
6. well head safe hydraulic pressure cut-off apparatus according to claim 1 is characterized in that: the sheath that described hydraulic cylinder upper end is provided with is provided with valve position sensor.
7. well head safe hydraulic pressure cut-off apparatus according to claim 1 is characterized in that: the oil-in that described hydraulic implement cylinders upper side is provided with is connected with the pouring orifice of external control mechanism.
8. well head safe hydraulic pressure cut-off apparatus according to claim 1 is characterized in that: the oil-out that described fuel tank lower end is provided with links to each other with the inlet of external control mechanism oil pump.
9. well head safe hydraulic pressure cut-off apparatus according to claim 1 is characterized in that: hydraulic cylinder and fuel tank are by screwed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202230347U CN201306149Y (en) | 2008-12-01 | 2008-12-01 | Wellhead safety hydraulic cutoff device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202230347U CN201306149Y (en) | 2008-12-01 | 2008-12-01 | Wellhead safety hydraulic cutoff device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306149Y true CN201306149Y (en) | 2009-09-09 |
Family
ID=41098616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202230347U Expired - Lifetime CN201306149Y (en) | 2008-12-01 | 2008-12-01 | Wellhead safety hydraulic cutoff device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306149Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963236A (en) * | 2010-09-28 | 2011-02-02 | 胡金木 | Manual hydraulic gate valve |
| CN102287164A (en) * | 2011-07-04 | 2011-12-21 | 重庆市正华钻采设备有限公司 | Control valve for hydraulic well mouth safety valve control system |
| CN101413385B (en) * | 2008-12-01 | 2013-05-15 | 什邡慧丰采油机械有限责任公司 | Well head safe hydraulic pressure cut-off apparatus |
| CN104153739A (en) * | 2014-08-26 | 2014-11-19 | 乐山倍创机械制造有限公司 | Hydraulic drive wellhead safety cutting device |
| CN104197074A (en) * | 2014-08-21 | 2014-12-10 | 山东大学 | Integrated type electro-hydraulic drive regulating valve and control method |
| CN104595559A (en) * | 2015-01-29 | 2015-05-06 | 纽威石油设备（苏州）有限公司 | Spring type hydraulic driver |
| WO2016026391A1 (en) * | 2014-08-21 | 2016-02-25 | 山东大学 | Integrated electro-hydraulic driven regulating valve and control method |
-
2008
- 2008-12-01 CN CNU2008202230347U patent/CN201306149Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413385B (en) * | 2008-12-01 | 2013-05-15 | 什邡慧丰采油机械有限责任公司 | Well head safe hydraulic pressure cut-off apparatus |
| CN101963236A (en) * | 2010-09-28 | 2011-02-02 | 胡金木 | Manual hydraulic gate valve |
| CN102287164A (en) * | 2011-07-04 | 2011-12-21 | 重庆市正华钻采设备有限公司 | Control valve for hydraulic well mouth safety valve control system |
| CN102287164B (en) * | 2011-07-04 | 2015-06-10 | 重庆市正华钻采设备有限公司 | Control valve for hydraulic well mouth safety valve control system |
| CN104197074A (en) * | 2014-08-21 | 2014-12-10 | 山东大学 | Integrated type electro-hydraulic drive regulating valve and control method |
| WO2016026391A1 (en) * | 2014-08-21 | 2016-02-25 | 山东大学 | Integrated electro-hydraulic driven regulating valve and control method |
| CN104153739A (en) * | 2014-08-26 | 2014-11-19 | 乐山倍创机械制造有限公司 | Hydraulic drive wellhead safety cutting device |
| CN104595559A (en) * | 2015-01-29 | 2015-05-06 | 纽威石油设备（苏州）有限公司 | Spring type hydraulic driver |
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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: 20090909 |
|
| CX01 | Expiry of patent term |