CN208764394U - Control system is truncated in axial-flow type safety shut-off valve and its superpressure - Google Patents
Control system is truncated in axial-flow type safety shut-off valve and its superpressure Download PDFInfo
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- CN208764394U CN208764394U CN201821111111.XU CN201821111111U CN208764394U CN 208764394 U CN208764394 U CN 208764394U CN 201821111111 U CN201821111111 U CN 201821111111U CN 208764394 U CN208764394 U CN 208764394U
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Abstract
The utility model discloses a kind of axial-flow type safety shut-off valves and its superpressure, and control system, including left valve barrel, right valve barrel, valve seat, spool, valve rod, valve core housing, piston bush and piston is truncated；Left valve barrel, valve seat and spool constitute inlet space；Spool is slidably connected in valve core housing, and left part space is constituted on the inside of spool and valve core housing；Damping space is constituted on the right side of valve core housing, on the left of piston bush inside and piston；Reset spring is set in damping space；Right space is constituted on the left of piston bush, piston and right valve barrel inner sleeve；Setting signal medium holes on piston bush, signal media hole is by the outlet of right space and super pressure control valve；It is not necessarily to the external energy when the application works, is automatically cut off using pressure energy possessed by medium itself.Crushing is small when valve working, and negotiability is big, and noise is low；Has the function of single superpressure truncation, multistage superpressure truncation and long-range control etc..It is particularly suitable for the big flows such as Gao Long-distance Transmission Pipeline, point defeated station and conveys occasion.
Description
Technical field
The utility model relates to burnt gas valve technical field, more specifically to a kind of axial-flow type safety shut-off valve and its
Control system is truncated in superpressure.
Background technique
The typical pressure control system at gas transmission and distribution station is mainly by safety shut-off valve, monitoring pressure regulator and work flow
The outlet of (pressure) regulating valve composition, safety shut-off valve is connected by flange with the valve preceding pipeline of monitoring pressure regulator, and safety is cut
The control valve of disconnected valve is connected by impulse signal pipe with pipeline after the valve of work flow control valve, and downstream feedback control is received
Pressure signal controls the opening and closing of safety shut-off valve, by downstream pressure control within the scope of setting, guarantees normal downstream tube
Road supply gas pressure and gas safe conveying.
State Intellectual Property Office discloses a Publication No. CN204062039U on December 31st, 2014, entitled
The utility model patent of " a kind of self-operated safety block valve ", the utility model include sensing element, executing agency and shut-off valve,
Executing agency includes that shell and the compressed spring and lever assembly, sensing element that are arranged inside the shell are mounted on the upper end of shell
On face, the upper end of sensing element connects monitored pipeline by pressure pipe, and the lower end of sensing element is connected with compressed spring upper end,
Compressed spring lower end connects lever assembly, and the other end of lever assembly is connected with the valve rod of shut-off valve.
The external energy is needed when safety shut-off valve works at present, generally use Electronic control or is manually controlled, is needed artificial
Operation, applicability is relatively narrow, and there are larger noises when work.
Utility model content
In order to overcome above-mentioned defect existing in the prior art and deficiency, device itself provides a kind of axial-flow type truncation safely
Control system is truncated in valve and its superpressure, and present invention aims to overcome that above-mentioned deficiency, the axial-flow type of the application are cut safely
Disconnected valve, when work, are not necessarily to the external energy, are automatically cut off using pressure energy possessed by medium itself.Crushing is small when valve working, stream
Logical ability is big, and noise is low；Has the function of single superpressure truncation, multistage superpressure truncation and long-range control etc..It is particularly suitable for natural gas
The big flows such as long-distance transport pipes, point defeated station convey occasion.
In order to solve above-mentioned problems of the prior art, the application is achieved through the following technical solutions:
Axial-flow type safety shut-off valve, including left valve barrel and right valve barrel, it is characterised in that: further include valve seat, spool, valve rod,
Valve core housing, piston bush and piston, the right valve barrel include right valve barrel inner sleeve and right valve barrel housing；The spool, valve rod and piston
Constitute power transfer mechanism；The left valve barrel, valve seat and spool constitute inlet space；The spool is slidably connected to valve core housing
It is interior, left part space is constituted on the inside of spool and the valve core housing, constitutes damping sky on the left of valve core housing right side, piston bush inside and piston
Between, reset spring is provided in the damping space；It is provided with spiracle on the piston bush, the spiracle is by damping space
It is connected to outside；The piston bush.Right space is constituted on the left of piston and right valve barrel inner sleeve；Work is provided on the piston bush
Plug sleeve runner hole, left valve barrel inside and interval, piston bush runner hole, right valve barrel runner hole and the right valve barrel inner sleeve on the outside of valve core housing
Outlet space is together constituted with the interval of right valve barrel housing；Signal media hole is provided on the piston bush, the signal is situated between
The tool interface system that setting is put on outside right space and right valve barrel is connected to by matter hole.
The window for meeting traffic requirement is provided on the valve core housing, the window is empty for being connected to inlet space and outlet
Between.
Balance hole is provided on the spool, the balance hole is used to balance the pressure of inlet space and left part space.
Valve position indicator is installed, for showing spool open or closed position at the tool interface system.
Control system is truncated in the superpressure of axial-flow type safety shut-off valve, it is characterised in that: including axial-flow type safety shut-off valve and
Several super pressure control valves；
The axial-flow type safety shut-off valve include left valve barrel, right valve barrel, valve seat, spool, valve rod, valve core housing, piston bush and
Piston, the right valve barrel include right valve barrel inner sleeve and right valve barrel housing；The spool, valve rod and piston constitute power and transmit machine
Structure；The left valve barrel, valve seat and spool constitute inlet space；The spool is slidably connected in valve core housing, spool and the valve
Left part space is constituted on the inside of core retainer plate, constitutes damping space, the damping space on the left of valve core housing right side, piston bush inside and piston
Inside it is provided with reset spring；Spiracle is provided on the piston bush, damping space is connected to by the spiracle with outside；It is described
Right space is constituted on the left of piston bush, piston and right valve barrel inner sleeve；Piston bush runner hole, left valve are provided on the piston bush
Interval, piston bush runner hole, right valve barrel runner hole and right valve barrel inner sleeve and right valve barrel housing on the outside of internal side and valve core housing
Interval together constitutes outlet space；It is provided with signal media hole on the piston bush, the signal media hole is by right space
With the outlet of super pressure control valve；
Several super pressure control valves are connected with axial-flow type safety shut-off valve, the outlet of several super pressure control valves and axis stream
The right space of formula safety shut-off valve is connected to；The import of super pressure control valve is connected with the outlet conduit in downstream.
It further include several pressure regulators, the corresponding pressure regulator of a super pressure control valve, the outlet of super pressure control valve and axis
The right space of streaming safety shut-off valve is connected to, and the import of super pressure control valve is connected with the outlet conduit of corresponding pressure regulator.
The quantity of the super pressure control valve is one, and the quantity of the pressure regulator is one, the outlet of super pressure control valve with
The right space of axial-flow type safety shut-off valve is connected to；The import of super pressure control valve is connected with the outlet conduit of pressure regulator.
The quantity of the super pressure control valve is two, and respectively level-one super pressure control valve and second level super pressure control valve are described
The quantity of pressure regulator is two, respectively level-one pressure regulator and second voltage regulation device, level-one super pressure control valve and second level super pressure control
The outlet of valve is connected to the right space of axial-flow type safety shut-off valve；The import of level-one super pressure control valve and level-one pressure regulator
Outlet conduit is connected, and the import of second level super pressure control valve is connected with the outlet conduit of second voltage regulation device.
The window for meeting traffic requirement is provided on the valve core housing, the window is empty for being connected to inlet space and outlet
Between.
Balance hole is provided on the spool, the balance hole is used to balance the pressure of inlet space and left part space.
In this application, the super pressure control valve is Publication No. CN201462116U, a kind of entitled " gas safe
Pneumatic controller disclosed in the patent document of stop valve ".
The super pressure control valve includes control valve body, control valve core, control valve piston shaft, middle valve cap, control valve
Bonnet, second spring, intake valve, bleed valve and pressure guide hole, the pressure guide hole are communicated with the right space, the control valve
The sealing area of spool is greater than the sectional area of control valve piston shaft, and the setting power of second spring is equal to the sealing of control valve core
The product of area and pressure medium, control valve piston upper chamber forced area are equal to control valve piston area and subtract control valve piston shaft
The sectional area of bar.The super pressure control valve is designed to labyrinth damping piston structure, and sealing is using hard soft double matter sealings.It is described pneumatic
Controller further includes the end cap connecting with second bonnet, and through the adjusting screw rod in the end cap, the adjusting spiral shell
The bottom end of bar is contacted with the second spring.
The working principle of the application is:
Axial-flow type safety shut-off valve is opened when working normally, and for super pressure control valve air inlet valve position in normally opened, bleed valve is in normal
It closes, super pressure control valve core is under the spring-force driven dual of second spring always in closing sealing state.Axial-flow type is truncated safely
Under valve normal operation, super pressure control valve core is in close state, and no gas medium enters the right space, and right part is empty
Interior pressure medium is close to 0 value, and the spool of axial-flow type safety shut-off valve is under the active force of pressure medium and reset spring, always
In the open state, when system downstream outlet conduit gas pressure is increased to setting cut-out pressure, super pressure control valve core is opened
It opens, gas medium enters the right space through connecting pipe, signal media hole, under right space active force, pacifies in axial-flow type
Under the piston amplification of full block valve, power transfer mechanism pushes the spool of axial-flow type safety shut-off valve to be quickly moved to the left and connects
Its valve seat is touched, the access of inlet space and outlet space has been cut off, closes axial-flow type safety shut-off valve rapidly, cuts off air-flow.
Right space communicates generation back pressure with piston shaft upper end by the aperture on intake valve, after the cutting of axial-flow type safety shut-off valve under
Intake valve is closed in the pressure reduction of play pipe road, opens bleed valve, and axial-flow type safety valve right space gas, the row of being then shut off is discharged
It lets out valve, opens intake valve handle, the spool of axial-flow type safety valve is lifted off a seat under the action of reset spring, inlet space and is gone out
Connected state is restored in mouth space, and safety shut-off valve resets.
Compared with prior art, technical effect beneficial brought by the application is shown:
1, it is not necessarily to the external energy when axial-flow type safety shut-off valve work of the application, utilizes pressure energy possessed by medium itself
It automatically cuts off, crushing is small when valve working, and negotiability is big, and noise is low；It is truncated with the truncation of single superpressure, multistage superpressure and remote
The functions such as process control.It is particularly suitable for the big flows such as Gao Long-distance Transmission Pipeline, point defeated station and conveys occasion.Traditional axial-flow type is cut safely
Disconnected valve is using automatically controlled control or manually controls, and response speed is slow, cannot cut off and open in real time according to downstream line pressure, simultaneously
It is also required to the external energy to be driven, when spool is opened, it cannot be guaranteed that full-gear, spool unlatching response is slower, and the application
Axial-flow type safety shut-off valve, automatically cut off using the realization of pressure energy possessed by medium itself, and working condition bottom spool is multiple
It is always maintained at normally opened full-gear under the action of the spring of position, negotiability is big, and noise is small.
2, the axial-flow type safety shut-off valve of the application reaches the super pressure control device setting pressure when line pressure raising,
Controller damps nozzle and opens, and gas enters controller piston, under piston amplification, flap moment standard-sized sheet.Gas
The right space is rapidly entered, is amplified thrust gas by the piston, above-mentioned power transfer mechanism pushes the spool fast
Speed is moved to the left the contact valve seat, has cut off the access of the inlet space and the outlet space, has kept safety shut-off valve fast
Speed is closed.
3, control system is truncated in the superpressure of the axial-flow type safety shut-off valve of the application, and the multistage to downstream line may be implemented
Control, carries out grading control for downstream line, if there is superpressure phenomenon at a certain lower exit pipeline, can reflect rapidly
At axial-flow type safety shut-off valve, truncation control is carried out to pipeline, enhances the safety of pipeline, it is long to be particularly suitable for natural gas
The big flows such as defeated pipeline, point defeated station convey occasion.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the application axial-flow type safety shut-off valve；
Fig. 2 is the cross-sectional view of the right valve barrel of the application axial-flow type safety shut-off valve；
Fig. 3 is that control system architecture figure is truncated in the application axial-flow type safety shut-off valve superpressure；
Fig. 4 is that control system architecture figure is truncated in the application axial-flow type safety shut-off valve multistage superpressure；
Appended drawing reference: 1, valve core housing, 2, balance hole, 3, inlet space, 4, valve rod, 5, spool, 6, valve seat, 7, left valve barrel,
8, left part space, 9, damping space, 10, reset spring, 11, valve position indicator, 12, piston bush runner hole, 13, outside right valve barrel
Set, 14, piston bush, 15, right space, 16, piston, 17, right valve barrel inner sleeve, 18, outlet space, 19, spiracle, 20, right valve
Body runner hole, 21, super pressure control valve, 22, signal media hole, 23, tool interface system, 24, pressure regulator, 25, level-one pressure regulator, 26,
Second voltage regulation device, 27, level-one super pressure control valve, 28, second level super pressure control valve.
Specific embodiment
Embodiment 1
As one preferred embodiment of the application, referring to Figure of description 1 and 2, present embodiment discloses:
Axial-flow type safety shut-off valve, including left valve barrel 7, right valve barrel, valve seat 6, spool 5, valve rod 4, valve core housing 1, piston bush
14 and piston 16, the right valve barrel include right valve barrel inner sleeve 17 and right valve barrel housing 13；16 structure of the spool 5, valve rod 4 and piston
At power transfer mechanism；The left valve barrel 7, valve seat 6 and spool 5 constitute inlet space 3；The spool 5 is slidably connected to spool
In set 1, left part space 8 is constituted on the inside of spool 5 and the valve core housing 1,1 right side of valve core housing, 14 inside of piston bush and piston 16 are left
Side constitutes damping space 9, is provided with reset spring 10 in the damping space 9；It is provided with spiracle 19 on the piston bush 14,
Damping space 9 is connected to by the spiracle 19 with outside；It is constituted on the left of the piston bush 14, piston 16 and right valve barrel inner sleeve 17
Right space 15；It is provided with piston bush runner hole 12 on the piston bush 14, the interval in 7 inside of left valve barrel and 1 outside of valve core housing,
The interval of piston bush runner hole 12, right valve barrel runner hole 20 and right valve barrel inner sleeve 17 and right valve barrel housing 13 together constitutes outlet
Space 18；It is provided with signal media hole 22 on the piston bush 14, the signal media hole 22 is by right space 15 and right valve barrel
The tool interface system 23 being arranged on housing 13 is connected to.Spiracle 19 is set on piston bush 14, can guarantee that the damping is empty when work
Between 9 can normal " breathing ", " will not feel suffocated ".
In addition, being provided with the window for meeting traffic requirement on the valve core housing 1, the window is for being connected to inlet space 3
With outlet space 18.It is provided with balance hole 2 on the spool 5, the balance hole 2 can balance the inlet space 3 and described
The pressure in left part space 8.Valve position indicator 11 is installed, for showing that spool 5 opens or closes position at the tool interface system 23
It sets.
Embodiment 2
As the application another embodiment, referring to Figure of description 3 and 4, present embodiment discloses:
Control system, including axial-flow type safety shut-off valve, several superpressure controls is truncated in the superpressure of axial-flow type safety shut-off valve
Valve 21 processed；In the present embodiment, according to the quantity of super pressure control valve 21, superpressure truncation control system can be divided into single superpressure and cut
Mode is truncated in disconnected mode and multistage superpressure.
As shown in figure 3, the quantity of the super pressure control valve 21 is one, the outlet of super pressure control valve 21 and axial-flow type safety
The right space 15 of block valve is connected to, i.e., super pressure control valve is mounted at the tool interface system of axial-flow type safety shut-off valve；Superpressure control
The import of valve processed is connected with lower exit pipeline.Generally the import of super pressure control valve is connected with the outlet conduit of pressure regulator 24,
But any position of lower exit pipeline can be connected to.
In the present embodiment, the axial-flow type safety shut-off valve includes left valve barrel 7, right valve barrel, valve seat 6, spool 5, valve
Bar 4, valve core housing 1, piston bush 14 and piston 16, the right valve barrel include right valve barrel inner sleeve 17 and right valve barrel housing 13；The valve
Core 5, valve rod 4 and piston 16 constitute power transfer mechanism；The left valve barrel 7, valve seat 6 and spool 5 constitute inlet space 3；It is described
Spool 5 is slidably connected in valve core housing 1, and left part space 8,1 right side of valve core housing, piston are constituted on the inside of spool 5 and the valve core housing 1
Damping space 9 is constituted on the left of 14 inside of set and piston 16, is provided with reset spring 10 in the damping space 9；The piston bush
Spiracle 19 is provided on 14, damping space 9 is connected to by the spiracle 19 with outside；The piston bush 14, piston 16 and the right side
Right space 15 is constituted on the left of valve body inner sleeve 17；Piston bush runner hole 12,7 inside of left valve barrel are provided on the piston bush 14
With interval, piston bush runner hole 12, right valve barrel runner hole 20 and the right valve barrel inner sleeve 17 and right valve barrel housing 13 in 1 outside of valve core housing
Interval together constitute outlet space 18；Signal media hole 22, the signal media hole 22 are provided on the piston bush 14
The tool interface system 23 being arranged in right space 15 and right valve barrel housing 13 is connected to.
In the present embodiment, the super pressure control valve is Publication No. CN201462116U, a kind of entitled " combustion gas peace
The structure of pneumatic controller disclosed in the patent document of full stop valve " unanimously (does not list super pressure control individually in the application
The structure of valve).In addition, super pressure control valve described in the present embodiment, not refers in particular to Publication No. CN201462116U, it is entitled
The structure of pneumatic controller disclosed in the patent document of " a kind of gas safety cut-off valve ", as long as can be realized super pressure control
Existing device belongs to the range of the application super pressure control valve.
In the present embodiment, the super pressure control valve can use Publication No. CN102147028A, entitled " low pressure
Pilot valve structure disclosed in the patent document of pilot operated safety valve ".
Working principle is: axial-flow type safety shut-off valve is opened when working normally, 21 air inlet valve position of super pressure control valve in normally opened,
Bleed valve is in normally closed, and super pressure control valve core is under the spring-force driven dual of second spring always in closing sealing state.Axis
Under streaming safety shut-off valve normal operation, super pressure control valve core is in close state, and no gas medium enters the right side
Portion space 15, pressure medium in pressure medium and resets bullet close to 0 value, the spool of axial-flow type safety shut-off valve in right space 15
Under the active force of spring, it is constantly in open state, when system downstream outlet conduit gas pressure is increased to setting cut-out pressure,
21 spool of super pressure control valve is opened, and gas medium enters the right space 15 through connecting pipe, signal media hole 22, in right part sky
Between under 15 active forces, under 16 amplification of piston of axial-flow type safety shut-off valve, power transfer mechanism pushes axial-flow type safety
The spool 5 of block valve, which is quickly moved to the left, contacts its valve seat 6, has cut off the access of inlet space 3 and outlet space 18, has made axis stream
Formula safety shut-off valve is closed rapidly, and air-flow is cut off.Right space 15 is communicated by the aperture on intake valve with piston shaft upper end
Back pressure is generated, downstream line pressure reduction after the cutting of axial-flow type safety shut-off valve closes intake valve, opens bleed valve, axis is discharged
15 gas of streaming safety valve right space is then shut off bleed valve, opens intake valve handle, and the spool 5 of axial-flow type safety valve exists
Lift off a seat 6 under the action of reset spring 10, inlet space 3 and outlet space 18 restore connected state, and safety shut-off valve resets.
From outer, as shown in figure 4, the quantity of the super pressure control valve 21 is two, respectively 27 He of level-one super pressure control valve
Second level super pressure control valve 28, the quantity of the pressure regulator are two, respectively level-one pressure regulator 25 and second voltage regulation device 26, level-one
The outlet of super pressure control valve 27 and second level super pressure control valve 28 is connected to the right space 15 of axial-flow type safety shut-off valve；Level-one
The import of super pressure control valve 27 is connected with the outlet conduit of level-one pressure regulator 25, the import of second level super pressure control valve 28 and second level tune
The outlet conduit of depressor 26 is connected.In the present embodiment, pressure regulator not refers in particular to a certain device, can be its in gas pipeline
His component is realized to the Multistage Control of the distribution pressure system, downstream line is carried out grading control, if a certain lower exit pipe
Occur superpressure phenomenon at road, then can reflect rapidly at axial-flow type safety shut-off valve, truncation control is carried out to pipeline, is enhanced
The safety of pipeline is particularly suitable for the big flows such as Gao Long-distance Transmission Pipeline, point defeated station and conveys occasion.
In addition, being provided with the window for meeting traffic requirement on the valve core housing 1, the window is for being connected to inlet space 3
With outlet space 18.It is provided with balance hole 2 on the spool 5, the balance hole 2 can balance the inlet space 3 and described
The pressure in left part space 8.Valve position indicator 11 is installed, for showing that spool 5 opens or closes position at the tool interface system 23
It sets.
Claims (10)
1. axial-flow type safety shut-off valve, including left valve barrel (7) and right valve barrel, it is characterised in that: further include valve seat (6), spool
(5), valve rod (4), valve core housing (1), piston bush (14) and piston (16), the right valve barrel include right valve barrel inner sleeve (17) and right valve
External set (13)；The spool (5), valve rod (4) and piston (16) constitute power transfer mechanism；The left valve barrel (7), valve seat
(6) and spool (5) constitutes inlet space (3)；The spool (5) is slidably connected in valve core housing (1), spool (5) and the valve
Left part space (8) are constituted on the inside of core retainer plate (1), constitutes on the inside of valve core housing (1) right side, piston bush (14) and on the left of piston (16) and damps
Space (9), the damping space (9) is interior to be provided with reset spring (10)；Spiracle (19) are provided on the piston bush (14),
Damping space (9) is connected to by the spiracle (19) with outside；The piston bush (14), piston (16) and right valve barrel inner sleeve (17)
Left side constitutes right space (15)；Be provided with piston bush runner hole (12) on the piston bush (14), on the inside of left valve barrel (7) with
Interval, piston bush runner hole (12), right valve barrel runner hole (20) and right valve barrel inner sleeve (17) and right valve barrel on the outside of valve core housing (1)
The interval of housing (13) together constitutes outlet space (18)；Signal media hole (22), institute are provided on the piston bush (14)
Signal media hole (22) is stated to be connected to the tool interface system (23) being arranged in right space (15) and right valve barrel housing (13).
2. axial-flow type safety shut-off valve as described in claim 1, it is characterised in that: be provided with satisfaction on the valve core housing (1)
The window of traffic requirement, the window is for being connected to inlet space (3) and outlet space (18).
3. axial-flow type safety shut-off valve as described in claim 1, it is characterised in that: be provided with balance hole on the spool (5)
(2), the balance hole (2) is used to balance the pressure of inlet space (3) and left part space (8).
4. axial-flow type safety shut-off valve as described in claim 1, it is characterised in that: be equipped with valve at the tool interface system (23)
Position indicator (11), for showing spool (5) open or closed position.
5. control system is truncated in the superpressure of axial-flow type safety shut-off valve, it is characterised in that: if including axial-flow type safety shut-off valve and
Dry super pressure control valve (21)；
The axial-flow type safety shut-off valve includes left valve barrel (7), right valve barrel, valve seat (6), spool (5), valve rod (4), valve core housing
(1), piston bush (14) and piston (16), the right valve barrel include right valve barrel inner sleeve (17) and right valve barrel housing (13)；The valve
Core (5), valve rod (4) and piston (16) constitute power transfer mechanism；The left valve barrel (7), valve seat (6) and spool (5) constitute into
Mouth space (3)；The spool (5) is slidably connected in valve core housing (1), and left part is constituted on the inside of spool (5) and the valve core housing (1)
Space (8), valve core housing (1) right side, piston bush (14) inside and piston (16) left side constitute damping space (9), the damping sky
Between be provided with reset spring (10) in (9)；It is provided with spiracle (19) on the piston bush (14), the spiracle (19) will be hindered
Buddhist nun space (9) is connected to outside；Right space is constituted on the left of the piston bush (14), piston (16) and right valve barrel inner sleeve (17)
(15)；Be provided with piston bush runner hole (12) on the piston bush (14), on the inside of left valve barrel (7) and on the outside of valve core housing (1) between
It is total every, the interval of piston bush runner hole (12), right valve barrel runner hole (20) and right valve barrel inner sleeve (17) and right valve barrel housing (13)
It is same to constitute outlet space (18)；It is provided with signal media hole (22) on the piston bush (14), the signal media hole (22)
By the outlet of right space (15) and super pressure control valve (21)；
Several super pressure control valves (21) are connected with axial-flow type safety shut-off valve, the outlet of several super pressure control valves and axis stream
The right space (15) of formula safety shut-off valve is connected to；The import of super pressure control valve is connected with the outlet conduit in downstream.
6. control system is truncated in the superpressure of axial-flow type safety shut-off valve as claimed in claim 5, it is characterised in that: if further including
Dry pressure regulator (24), the corresponding pressure regulator (24) of a super pressure control valve (21), the outlet of super pressure control valve (21) and axis
The right space (15) of streaming safety shut-off valve is connected to, the outlet conduit of the import of super pressure control valve and corresponding pressure regulator (24)
It is connected.
7. control system is truncated in the superpressure of axial-flow type safety shut-off valve as claimed in claim 6, it is characterised in that: the superpressure
The quantity of control valve (21) is one, and the quantity of the pressure regulator (24) is one, the outlet of super pressure control valve (21) and axis stream
The right space (15) of formula safety shut-off valve is connected to；The outlet conduit phase of the import of super pressure control valve (21) and pressure regulator (24)
Even.
8. control system is truncated in the superpressure of axial-flow type safety shut-off valve as claimed in claim 6, it is characterised in that: the superpressure
The quantity of control valve (21) is two, respectively level-one super pressure control valve (27) and second level super pressure control valve (28), the pressure regulation
The quantity of device (24) is two, respectively level-one pressure regulator (25) and second voltage regulation device (26), level-one super pressure control valve (27) and
The outlet of second level super pressure control valve (28) is connected to the right space of axial-flow type safety shut-off valve (15)；Level-one super pressure control valve
(27) import is connected with the outlet conduit of level-one pressure regulator (25), the import of second level super pressure control valve (28) and second voltage regulation device
(26) outlet conduit is connected.
9. control system is truncated in the superpressure of axial-flow type safety shut-off valve as claimed in claim 5, it is characterised in that: the spool
The window for meeting traffic requirement is provided on set (1), the window is for being connected to inlet space (3) and outlet space (18).
10. control system is truncated in the superpressure of axial-flow type safety shut-off valve as claimed in claim 5, it is characterised in that: the valve
It is provided on core (5) balance hole (2), the balance hole (2) is used to balance the pressure of inlet space (3) and left part space (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821111111.XU CN208764394U (en) | 2018-07-13 | 2018-07-13 | Control system is truncated in axial-flow type safety shut-off valve and its superpressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821111111.XU CN208764394U (en) | 2018-07-13 | 2018-07-13 | Control system is truncated in axial-flow type safety shut-off valve and its superpressure |
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| Publication Number | Publication Date |
|---|---|
| CN208764394U true CN208764394U (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821111111.XU Active CN208764394U (en) | 2018-07-13 | 2018-07-13 | Control system is truncated in axial-flow type safety shut-off valve and its superpressure |
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| CN (1) | CN208764394U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716558A (en) * | 2018-07-13 | 2018-10-30 | 四川长仪油气集输设备股份有限公司 | Axial-flow type safety shut-off valve and its superpressure block control system |
| CN114719031A (en) * | 2022-03-15 | 2022-07-08 | 方正阀门集团股份有限公司 | Ultrahigh pressure self-operated axial flow block valve |
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2018
- 2018-07-13 CN CN201821111111.XU patent/CN208764394U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716558A (en) * | 2018-07-13 | 2018-10-30 | 四川长仪油气集输设备股份有限公司 | Axial-flow type safety shut-off valve and its superpressure block control system |
| CN114719031A (en) * | 2022-03-15 | 2022-07-08 | 方正阀门集团股份有限公司 | Ultrahigh pressure self-operated axial flow block valve |
| CN114719031B (en) * | 2022-03-15 | 2023-11-07 | 方正阀门集团股份有限公司 | Ultrahigh pressure self-operated axial flow cut-off valve |
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