CN206582369U - A kind of urgent cutting device of well head safe - Google Patents
A kind of urgent cutting device of well head safe Download PDFInfo
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- CN206582369U CN206582369U CN201720248131.0U CN201720248131U CN206582369U CN 206582369 U CN206582369 U CN 206582369U CN 201720248131 U CN201720248131 U CN 201720248131U CN 206582369 U CN206582369 U CN 206582369U
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- pressure
- valve
- well head
- cutting device
- valve body
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Abstract
The utility model is related to valve field, more particularly to a kind of urgent cutting device of well head safe.The device includes valve body, passage provided with left and right connection in described valve body, described channel middle sets the valve plate for blocking path, drive control mechanism is set on described valve plate, described valve body one end sets pressure pipe to be connected with described passage, height pressure control system is set on described pressure pipe, and described height pressure control system controls drive mechanism to block path by the pressure size in monitor channel.The utility model is entered oil pressure in oil cylinder by oil hand pump, piston is promoted to make the downward Open valve of flashboard, pressure relief device and under-voltage bleeder are the pressure on induction air pressure pipe, when the hypertonia on pneumatic tube or it is too low when pressure relief device and under-voltage bleeder hydraulic oil pressure release is returned handlance fuel tank in realize cut-out cock；The characteristics of the utility model is simple in construction easy to use.
Description
Technical field
The utility model is related to valve field, more particularly to a kind of urgent cutting device of well head safe.
Background technology
SSV is mainly used in recovering the oil（Gas）Wellhead assembly, oil-gas gathering and transferring pipeline and chemical pressure conveyance conduit
On, when downstream line produces leakage, booster, blocked, well head or pipeline can be closed automatically, so that playing prevents the wasting of resources,
Protect personal security, reduce the effect of device damage.It is domestic at present oily（Gas）Field has been distinctly claimed each well head and must installed
This equipment with ensure field personnel safety.Prior art：The main drive device of safety shut-off valve is manual, gas
Move, surge, pneumatic and gas/liquid links, this is to use most common type of drive in the world at present.
First, gas（Liquid）The safety cut-off system of dynamic driving by：Gate valve, actuator, booster pump, hand pump, relay valve, gas
（Liquid）Control valve, pilot valve, overflow（Safety）The structures such as valve, magnetic valve, fusible plug, stop valve, accumulator, pipe fitting, joint, pressure gauge
Into.Control principle provides pressure in the case of pipeline pressure is normal by equipment such as booster pumps, relay valve is opened, by pressure
Actuator is sent to, gate valve is opened.When pipeline pressure is abnormal, the pipeline pressure sensed by pilot valve, be higher than when pressure or
Less than setting pressure value when, discharge the pressure of actuator, the compression spring in actuator resets, and closes valve.This side
The advantage of formula is that system is stable, is less prone to failure, and during control system failure, it is possible to achieve failure is closed.But it is this
Control mode is complicated, and all control signals are entirely pressure signal, and system response time is longer, it is necessary to external connection power
Source, and cost is higher.In the place or remote mountain areas of some conditions more harshness, do not possess the condition of power supply, source of the gas.Therefore only
It can use, at present using relatively broad, be used by most of petroleum-gas fiedl in the place for possessing power supply or gas source condition.
Secondly, using safety cut-off system driven electrically it is main by：Gate valve, electric operator, pressure sensing
The equipment such as device, PLC, relay, signal pickup assembly are constituted, when pressure exceeds setting value, by electric operator
Gate valve is closed, so as to play a part of protective conduit.The advantage of this control mode is simple in construction, and the response time is fast, can
Power battery driving is relied on, but electronic equipment is operationally also easy to produce electric spark, easily triggers fire on the contrary, therefore to requirement of explosion proof
It is very high, and when control system breaks down, it is impossible to automatic to close, therefore, this control mode uses considerably less at present.
It is particularly suited for low-pressure, nonflammable place.
Finally, manually operated safety cut-off system is simple in construction, also independent of various power sources, this control mode mesh
Preceding existing part oil field is being used, and mainly by manually operating manual pump to actuator offer pressure, makes valve opening, but people
Have to manually be opened, the time of Open valve is longer, workload is big, and cost of labor is higher.
Above type of drive depends on other power sources, such as power supply, source of the gas, artificial.From the success of source formula safety shut-off valve
Solve a series of this problem, valve is automatically brought into operation by the pressure of pressure pipeline, in common place in use, can
Save the energy, manually open money, the problem of solving power source in remote mountain areas.Another have the China Patent No. to be：
201120528239.8, a kind of utility model of SSV is disclosed, belongs to valve technology field.Including being installed on fuel feeding
The safe valve actuator being opened and closed for control bound, the safe valve actuator are provided with main valve on pipeline, the main valve
Upper end be connected with pilot valve and check-valves, the check-valves is all connected on oil supply pipe with pilot valve, the company of being provided with pilot valve
Lead to outside ball valve.The SSV, if when downstream generation booster, plugging, pipeline pressure will produce change, this
Individual changing value exceeds after pilot valve design of pressure scope, and pilot valve side outlet will be opened, by the pressure venting of actuator, in discharge pressure
During power, quick check-valves is closed automatically, prevents pipeline medium from continuing into actuator and being discharged, when pressure is racked up
Afterwards, the compression spring inside actuator is resetted, and band movable valve is closed.But in the process of implementation, Jie discharged from actuator
Matter（Oil or natural gas）It will be discharged from pilot valve side outlet, and cause serious waste, while being polluted to safety valve and environment.
The content of the invention
In order to solve the above-mentioned technical problem, the urgent cutting device of a kind of well head safe that the utility model is provided, this is blocked
The pressure medium discharged from actuator is recycled by valve, and provides it to the pressure of task under actuator, is prevented simultaneously
Pollution of the pressure oil that only pilot valve is discharged to working environment.
The technical scheme that the utility model is taken to achieve the above object is：
A kind of urgent cutting device of well head safe, the device is included in valve body, described valve body provided with the logical of left and right connection
Road, described channel middle, which is set, sets drive control mechanism, described valve body one on the valve plate for blocking path, described valve plate
End sets pressure pipe to be connected with described passage, and height pressure control system, described high-low pressure are set on described pressure pipe
Control system controls drive mechanism to block path by the pressure size in monitor channel.
As a further improvement, drive mechanism includes oil cylinder, described oil cylinder is by setting bonnet and described valve body close
Envelope is connected, and the upper end of described oil cylinder sets to set in drain tap, described oil cylinder sets bullet on piston rod, described piston rod
Spring, described spring one end is by setting spring base to be connected with piston rod, and the other end offsets with described bonnet, described piston
Bar lower end is connected with described valve plate, and described piston rod upper end sets piston.
As a further improvement, described height pressure control system includes pressure relief device and under-voltage bleeder, institute
The drain tap stated sets high-low pressure respectively by setting two connecting tubes to be connected with oil hand pump in two described connecting tubes
Check-valves, described pressure relief device and under-voltage bleeder offset with the control-rod on described check-valves respectively.
As a further improvement, described pressure relief device and under-voltage bleeder include valve body of releasing respectively, it is described
Valve body air inlet of releasing be connected with pressure pipe, release push rod, described push rod one of releasing are set in described bleeder valve body
End sets spring by spring base, and described spring one end is offseted with spring base, and the other end is supported with bleeder valve body phase, and described lets out
The push rod other end is put to offset with the high control-rod for compressing check-valves.
As a further improvement, setting pressure regulating mechanism on described pressure relief device and under-voltage bleeder.
As a further improvement, setting indicating cover on described oil cylinder, the piston end of described piston rod sets indicating arm,
Described indicating arm is placed in indicating cover.
As a further improvement, described valve plate is is to close valve upwards, it is downwards valve opening.
As a further improvement, setting needle valve, isolating valve, and pressure gauge on described pressure pipe.
As a further improvement, described height pressure control system also includes pressure retaining valve, relief valve and pressure gauge.
The utility model is entered oil pressure in oil cylinder by oil hand pump, promotes piston to make the downward Open valve of flashboard, superpressure
Bleeder and under-voltage bleeder are the pressure on induction air pressure pipe, when the hypertonia on pneumatic tube or it is too low when superpressure let out
Put device and under-voltage bleeder make hydraulic oil pressure release return handlance fuel tank in realize cut-out cock；The utility model structure
Simple easy to use the characteristics of.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Figure 1A-A sectional views.
Fig. 3 is the structural representation of the utility model height pressure control system.
Fig. 4 is the structural representation of the utility model pressure relief device.
Embodiment
Embodiment of the present utility model is made a detailed explanation below in conjunction with the accompanying drawings.
Such as Fig. 1, shown in 2, a kind of urgent cutting device of well head safe, the device includes in valve body 1, described valve body 1 and set
There is the passage 2 that left and right is connected, the described middle part of passage 2 sets the valve plate 3 for blocking path, and it is to close valve upwards that described valve plate 3, which is,
Downward is that drive control mechanism is set on valve opening, described valve plate 3, and described one end of valve body 1 sets pressure pipe 4 to lead to described
Road 1 is connected, and height pressure control system is set on described pressure pipe 4, and described height pressure control system passes through monitor channel
Interior pressure size controls drive mechanism to block path, and drive mechanism includes oil cylinder 5, and described oil cylinder 5 is by setting bonnet 6
It is connected with the described sealing of valve body 1, the upper end of described oil cylinder 5, which is set in drain tap 7, described oil cylinder 5, sets piston rod 8,
Spring 9 is set on described piston rod 8, and described one end of spring 9 is by setting spring base 10 to be connected with piston rod 8, the other end
Offseted with described bonnet 6, the described lower end of piston rod 8 is connected with described valve plate 3, the described upper end of piston rod 8, which is set, lives
Plug 11.
Such as Fig. 3, shown in 4, described height pressure control system includes pressure relief device 12 and under-voltage bleeder 13, institute
The drain tap 7 stated sets high respectively by setting two connecting tubes to be connected with oil hand pump 14 in two described connecting tubes
Low pressure check valves 15, described pressure relief device 12 and under-voltage bleeder 13 respectively with the control on described check-valves 15
Bar offsets；Described pressure relief device 12 and under-voltage bleeder 13 include release valve body 16, described valve body of releasing respectively
Push rod 17 of releasing is set in 16, and described one end of push rod 17 of releasing sets spring, described spring one end and bullet by spring base
Spring abutment offsets, and the other end offsets with valve body 16 of releasing, described the release other end of push rod 17 and the high control-rod for compressing check-valves
Offset.The described air inlet of valve body 16 of releasing is connected with pressure pipe, described pressure relief device 12 and under-voltage bleeder
The position that 13 air inlet is set is different, and the bottom that the air inlet of pressure relief device 12 is arranged on valve body 16 of releasing passes through high pressure
The promotion anterior displacement of push rod 17 of releasing opens high-pressure check valve, and the described air inlet of under-voltage bleeder 13 is arranged on valve body of releasing
By low pressure, anterior displacement opens low pressure check valves under the action of the spring for 16 upper end.
Pressure regulating mechanism 18 is set on described pressure relief device 12 and under-voltage bleeder 13.
Indicating cover 19 is set on described oil cylinder 5, and the piston end of described piston rod 8 sets indicating arm 20, described finger
Show that bar 20 is placed in indicating cover 19.
Needle valve 21, isolating valve, 22 and pressure gauge 23 are set on described pressure pipe.
Described height pressure control system also includes pressure retaining valve 24, relief valve 25 and pressure gauge.
Claims (9)
1. a kind of urgent cutting device of well head safe, the device includes the passage provided with left and right connection in valve body, described valve body,
Described channel middle, which is set, sets drive control mechanism on the valve plate for blocking path, described valve plate, it is characterised in that：It is described
Valve body one end set pressure pipe be connected with described passage, on described pressure pipe setting height pressure control system, it is described
Height pressure control system control drive mechanism to block path by pressure size in monitor channel.
2. the urgent cutting device of a kind of well head safe according to claim 1, it is characterised in that：Drive mechanism includes oil
Cylinder, described oil cylinder is by setting bonnet to be connected with described valve seal, and the upper end of described oil cylinder sets drain tap, described
Oil cylinder in piston rod is set, spring is set on described piston rod, described spring one end is by setting spring base and piston
Bar is connected, and the other end offsets with described bonnet, and described piston-rod lower end is connected with described valve plate, on described piston rod
End sets piston.
3. the urgent cutting device of a kind of well head safe according to claim 2, it is characterised in that：Described height pressure control system
Including pressure relief device and under-voltage bleeder, described drain tap is connected by two connecting tubes of setting with oil hand pump,
High-low pressure check-valves, described pressure relief device and under-voltage bleeder difference are set respectively in two described connecting tubes
Offseted with the control-rod on described check-valves.
4. the urgent cutting device of a kind of well head safe according to claim 3, it is characterised in that：Described pressure relief device and
Under-voltage bleeder includes valve body of releasing respectively, and described valve body air inlet of releasing is connected with pressure pipe, described bleeder valve
Push rod of releasing is set in vivo, and described push rod one end of releasing sets spring, described spring one end and spring base by spring base
Offset, the other end is supported with bleeder valve body phase, the described push rod other end of releasing offsets with the high control-rod for compressing check-valves.
5. the urgent cutting device of a kind of well head safe according to claim 4, it is characterised in that：Described pressure relief device and
Pressure regulating mechanism is set on under-voltage bleeder.
6. the urgent cutting device of a kind of well head safe stated according to claim 2, it is characterised in that：Set and refer on described oil cylinder
Show lid, the piston end of described piston rod sets indicating arm, and described indicating arm is placed in indicating cover.
7. the urgent cutting device of a kind of well head safe stated according to claim 1, it is characterised in that：Described valve plate is is upwards
Valve is closed, is downwards valve opening.
8. the urgent cutting device of a kind of well head safe stated according to claim 1, it is characterised in that：Set on described pressure pipe
Needle valve, isolating valve, and pressure gauge.
9. the urgent cutting device of a kind of well head safe stated according to claim 1, it is characterised in that：Described high-low pressure control system
System also includes pressure retaining valve, relief valve and pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720248131.0U CN206582369U (en) | 2017-03-15 | 2017-03-15 | A kind of urgent cutting device of well head safe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720248131.0U CN206582369U (en) | 2017-03-15 | 2017-03-15 | A kind of urgent cutting device of well head safe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206582369U true CN206582369U (en) | 2017-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201720248131.0U Active CN206582369U (en) | 2017-03-15 | 2017-03-15 | A kind of urgent cutting device of well head safe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885022A (en) * | 2017-03-15 | 2017-06-23 | 浙江美德机械有限公司 | A kind of urgent cutting device of well head safe |
-
2017
- 2017-03-15 CN CN201720248131.0U patent/CN206582369U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885022A (en) * | 2017-03-15 | 2017-06-23 | 浙江美德机械有限公司 | A kind of urgent cutting device of well head safe |
| CN106885022B (en) * | 2017-03-15 | 2023-01-10 | 浙江美德机械有限公司 | Well head safety promptly cuts device |
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