CN206429712U - Gas transmission station self-operated type emergency safety stop valve - Google Patents
Gas transmission station self-operated type emergency safety stop valve Download PDFInfo
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- CN206429712U CN206429712U CN201720014354.0U CN201720014354U CN206429712U CN 206429712 U CN206429712 U CN 206429712U CN 201720014354 U CN201720014354 U CN 201720014354U CN 206429712 U CN206429712 U CN 206429712U
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Abstract
The utility model is related to a kind of gas transmission station self-operated type emergency safety stop valve, including executing agency, pressure sensor (3) and stop valve, executing agency includes shell (25) and the superpressure spring (5) being arranged in shell (25), thanks to pressing spring (6), lever assembly, superpressure spring (5) upper end is connected with the superpressure spring seat of honour (4), epithelium (2) is installed above the superpressure spring seat of honour (4), pressure sensor (3) is arranged between epithelium (2) and the superpressure spring seat of honour (4) at position, superpressure spring (5), thanks to pressing spring (6) lower end connects lever assembly respectively, the other end of lever assembly is connected with the valve rod (21) of stop valve；The utility model can be applied in oil and gas long distance pipeline and urban gate station, can be effectively protected the nucleus equipment of downstream pipe network installation security, and the product maintenance cycle is long, and maintenance and repair parts is few, and maintenance cost is low, and roof-mounted structure design, and dismounting is easy.
Description
[technical field]
The utility model is related to stop valve technical field, and specifically a kind of gas transmission station is cut off with self-operated type emergency safety
Valve.
[background technology]
At present, existing gas transmission station is primarily present following weak point with stop valve：(1) the similar quick action emergency valve in part is not
It is self-operated type, instrument wind need to be equipped with by yard power source is provided, so as to cause yard cost high；(2) it is not to use
Roof-mounted design structure, causes later period maintenance can not realize on-line maintenance, causes maintenance difficult and with high costs；(3) cut-out rings
It is long between seasonable, it is impossible to timely and effective closing valve, cause the wasting of resources；(4) zero when valve base sealing is unable to reach valve seal
Leakage, causes the potential safety hazard in pipe-line system.And with the change of China's energy resource structure, the improvement to atmosphere pollution, the person
With property safety protection, therefore Gas Industry flourishing in recent years, need a high-performance badly, safe and reliable urgent
Safety cut-off valve, to solve the above mentioned problem in existing market.
[utility model content]
The purpose of this utility model seeks to solve above-mentioned deficiency and provide a kind of gas transmission station self-operated type emergency safety
Stop valve, the valve extraneous need not provide power source, can be acted by pipeline itself pressure medium control valve, and can be real
Existing on-line maintenance, greatly reduces maintenance difficulty, reduces maintenance cost.
A kind of gas transmission station self-operated type emergency safety stop valve, including executing agency, pressure are designed to achieve the above object
Sensor 3 and stop valve, the executing agency include shell 25 and the superpressure spring 5 being arranged in shell 25, lose pressing spring
6th, lever assembly, the upper end of superpressure spring 5 is connected with the superpressure spring seat of honour 4, and the top at the superpressure spring seat of honour 4 is provided with
Epithelium 2, the pressure sensor 3 is arranged between epithelium 2 and the superpressure spring seat of honour 4 at position, the superpressure spring 5, thanks to pressure
The lower end of spring 6 connects lever assembly respectively, and the other end of the lever assembly is connected with the valve rod 21 of stop valve.
The stop valve includes bonnet 22, valve body 23, valve rod 21, valve petal body 20 and valve seat 24, and the valve body 23 is provided with
Inlet and outlet, is provided with valve seat 24, the upper end of valve body 23 is provided with bonnet 22, the valve rod between the import and outlet
21 pass through bonnet 22 and extend in valve pocket, and the bottom of valve rod 21 is provided with valve petal body 20, the valve petal body 20 and valve seat 24
It is connected, the top of valve petal body 20 is equiped with closing spring 19.
The shell 25 of the executing agency is by bolt detachable connection bonnet 22, and the bonnet 22 is removable by bolt
Unload formula connection valve body 23.
The lever assembly includes control-rod 12, weights balance pin 7, balance control block 8, balance pivot 9, balance weight
10th, top pin connection axle 11, eccentric block 16, bent axle 17 and eccentric block bar 18, balance control block 8, balance pivot 9 are arranged on control
The one end of bar 12, the balance control block 8 is located at superpressure spring 5 around the rotary type connection of balance pivot 9, the balance control block 8
Lower section, the weights balance pin 7, balance weight 10, top pin connection axle 11 are arranged on the other end of control-rod 12, the balance weight
10 are linked up with around the connection of the top rotary type of pin connection axle 11, the balance weight 10 provided with groove, and the eccentric block bar 18 is supported
In on groove hook, eccentric block 16 is provided with the eccentric block bar 18, the eccentric block 16 is connected around the rotary type of bent axle 17,
The lower end of eccentric block bar 18 is connected with valve rod 21.
The upper end of eccentric block bar 18 is connected with screw rod 14, the lower end of screw rod 14 be equiped with emergency safety split key and
Handlebar 13 is equiped with SR 15, the upper end of screw rod 14.
The superpressure spring 5, thanks to pressing spring 6, lever assembly are provided with two groups, and the shell 25 is set to symmetrical
Symmetrical formula is respectively provided with one group of superpressure spring 5, loses pressing spring 6, pressure sensor 3 and lever in formula structure, the shell 25
Component.
The utility model compared with the existing technology, has the following advantages that：
(1) it can be applied in oil and gas long distance pipeline and urban gate station, downstream pipe network installation security can be effectively protected
Nucleus equipment；
(2) the product maintenance cycle is long, and maintenance and repair parts is few, and maintenance cost is low, and roof-mounted structure design, and dismounting is easy；
(3) special seat design, can realize valve seat zero leakage；
(4) high safety and reliability：Resetted using mechanical type manual, not by any vibration effect, pass through pressure
Sensor, can directly sense the pressure condition of pipe-line system；
(5) cut-out precision is high, surpasses cut-out precision and is pressed up to AQ1 (1%), thanks to up to AQ5 (5%)；Cut-out is rapid (during segment
Between≤0.5 second)；The product is identified by " national pump valve products Quality Supervision and Inspection Center " type approval test in September, 2016
It is qualified；
(6) possess emergency cut-off button on the spot, when pressure signal pipe choking, can emergency cut-off valve, when sensing epithelium
Can emergency cut-off valve during rupture；
(7) structural module：Pressure sensor, executing agency and valve body standalone module each other；
(8) dual control structure：One standard stop valve installs a pressure sensor and a set of trigger additional again, can monitor simultaneously
The outlet pressure of two-stage pressure-regulating device, realizes that two-stage is cut off；
(9) function can be matched as needed：According to different cut-out pressure values, match different model pressure sensor and
Cut off spring.
To sum up, gas transmission station described in the utility model is that a extraneous need not provide with self-operated type emergency safety stop valve
Power source, the self-operated type emergency safety stop valve of control valve action is carried out by pipeline itself pressure medium, the valve is using top
Dress formula structure design, it is possible to achieve on-line maintenance, greatly reduces maintenance difficulty and reduces maintenance cost, and cut-out is rapid, its
Break time can be realized no more than 0.5 second；In addition, valve base sealing can reach zero leakage, and fluid stream is flowed in valve body
For high in and low out, make valve base sealing more reliable.
[brief description of the drawings]
Fig. 1 is structural representation of the present utility model；
Fig. 2 is another example structure schematic diagram of the present utility model；
In figure：1st, outlet pressure 2, epithelium 3, pressure sensor 4, the superpressure spring seat of honour 5, superpressure spring 6, lose pressing spring 7,
Weights balance pin 8, balance control block 9, balance pivot 10, balance weight 11, top pin connection axle 12, control-rod 13, handlebar
14th, screw rod 15, SR 16, eccentric block 17, bent axle 18, eccentric block bar 19, closing spring 20, valve petal body 21, valve rod 22, valve
Lid 23, valve body 24, valve seat 25, shell.
[embodiment]
Further explained below is made to the utility model below in conjunction with the accompanying drawings：
The utility model provides a kind of gas transmission station self-operated type emergency safety stop valve, mainly by executing agency, pressure
Force snesor, bonnet, valve body, valve rod, valve petal body, valve seat etc. are constituted.Executing agency mainly passes through pressure sensor induction tube
The change of pressure value in road, control valve rod and valve petal body move up and down, and then control the sealing with valve seat, realize that valve is opened
And closing function；There are emergency safety split key, reseting handle and SR in executing agency；When run into emergency pipe superpressure or
Thanks to when the failure situation such as pressure, emergency safety stop valve cuts off valve.It is multiple by SR and turn after pending fault is excluded
Position handle, valve is opened.Executing agency, bonnet and valve body are bolted, trim by screw thread and mode connects for screw, if
Valve exist maintenance when, can used demounting bolt successively from valve body upper end take out trim, realize on-line maintenance.
As shown in Figure 1, the utility model mainly includes executing agency, pressure sensor 3 and stop valve, executing agency's bag
Include shell 25 and be arranged in shell 25 superpressure spring 5, lose pressing spring 6, lever assembly, the upper end of superpressure spring 5 is connected with
The superpressure spring seat of honour 4, the top at the superpressure spring seat of honour 4 is provided with epithelium 2, and pressure sensor 3 is arranged on epithelium 2 and superpressure spring
Between the seat of honour 4 at position, superpressure spring 5, the thanks to lower end of pressing spring 6 connect lever assembly respectively, and the other end of lever assembly is with cutting
The valve rod 21 of disconnected valve is connected.
Wherein, stop valve includes bonnet 22, valve body 23, valve rod 21, valve petal body 20 and valve seat 24, and valve body 23 is provided with import
And outlet, valve seat 24 is installed, the upper end of valve body 23 is provided with bonnet 22, and valve rod 21 is through bonnet 22 and prolongs between import and outlet
Extend in valve pocket, the bottom of valve rod 21 is provided with valve petal body 20, valve petal body 20 is connected with valve seat 24, the top of valve petal body 20 is installed
There is closing spring 19, the shell 25 of executing agency is by bolt detachable connection bonnet 22, and bonnet 22 is detachable by bolt
Formula connects valve body 23.
Lever assembly includes control-rod 12, weights balance pin 7, balance control block 8, balance pivot 9, balance weight 10, top
Sharp pin connection axle 11, eccentric block 16, bent axle 17 and eccentric block bar 18, balance control block 8, balance pivot 9 are arranged on control-rod 12
One end, balance control block 8 is put down around the rotary type connection of balance pivot 9, balance control block 8 located at the lower section of superpressure spring 5, balance weight
Weighing apparatus pin 7, balance weight 10, top pin connection axle 11 are arranged on the other end of control-rod 12, and balance weight 10 surrounds top pin connection axle 11
Rotary type is connected, and balance weight 10 is linked up with provided with groove, and eccentric block bar 18 is supported on groove hook, is set on eccentric block bar 18
There is eccentric block 16, eccentric block 16 is connected around the rotary type of bent axle 17, and the lower end of eccentric block bar 18 is connected with valve rod 21, eccentric block bar 18
Upper end is connected with screw rod 14, and the lower end of screw rod 14 is equiped with emergency safety split key and SR 15, the upper end of screw rod 14 and filled
Provided with handlebar 13.
As shown in Figure 2, it is another embodiment of the present utility model, wherein, superpressure spring 5, thanks to pressing spring 6, lever
Component is provided with two groups, and shell 25 is set to symmetrical formula in symmetrical formula structure, shell 25 and is respectively provided with one group of superpressure
Spring 5, thanks to pressing spring 6, pressure sensor 3 and lever assembly.
Operation principle of the present utility model is that the emergency safety stop valve has overpressure protection and loses pressure defencive function, should
Device is Yi Dan after cut-out, it is impossible to automatically reset, and only when failture evacuation and after open by-passing valve concora crush, passes through rotary actuator
Handle, could open stop valve.
(1) overpressure protection：When acting on, the outlet pressure on pressure sensor is higher than superpressure spring and thanks to pressing spring is set
Maximum cut-out pressure value when, epithelium is moved down, and with dynamic balancing control block around balance pivot rotate counterclockwise, weights balance pin
Move up, make the axial right rotation of the top pin connection of balance weight.So, balance weight groove hook move down, when balance weight support it is inclined
Heart block bar breaks off relations, and eccentric block is around eccentric block crank rotation, and bent axle is the valve rod fulcrum being connected with valve petal body.When eccentric block rotation
At 90 °, the closing spring on valve body promotes valve petal body to begin to shut off valve.When valve petal body is begun to shut off, now entrance
Acted on outlet pressure difference on valve petal body, producing an additional closing presure makes valve petal body further tend to closing, turns off
It is closer.Now, even if outlet pressure is less than peak overpressure cut-out pressure setting value, valve petal body is still remained turned-off.
(2) pressure protection is lost：It is less than the cut-out pressure that thanks to pressing spring is set when acting on the outlet pressure on pressure sensor
During value, epithelium is moved up, and the superpressure spring seat of honour that superpressure adjusts spring top is pressed on control structure shell, and between epithelium
It is ineffective.So, cut-out pressure only loses pressing spring by regulation and determined.At this moment, balance control block is promoted under weights balance pin
OK, to right rotation when making balance weight as overpressure protection.The action of eccentric block and valve petal body is similar to the situation of overpressure protection.
If epithelium ruptures, valve petal body will close carry out tripping protection in an identical manner.
(3) hand-reset：Work as failture evacuation, and the pressure acted on valve petal body is reached after balance, then needs to open manually
Valve reset is opened, operating method is as follows：(inner) driving handle bar, and rotate clockwise it downwards, meanwhile, pin (under) reset
Button Open valve.After valve opening, spring promotes manipulator's shank to return to original position, and screw rod is disengaged with manipulator's shank.
The utility model has following feature：(1) modular structure design：Pressure sensor, executing agency, bonnet and valve
Moduleization is designed, and can carry out apolegamy module according to different valve apertures, pressure stage and cut-out value.(2) possesses emergency cut-off
Button and SR, are resetted using mechanical type manual, make it have high safety and reliability.(3) there is dual control knot
Structure：The stop valve of one standard installs a sleeve pressure sensor and shortage due to overuse pressing spring trigger mechanism additional again, and downstream two can be monitored simultaneously
The different outlet pressures of level pressure regulator, realize that two-stage is cut off.(4) roof-mounted structure design is used, fastening bolt is outwarded winding, dismounting is held
Row mechanism, can realize on-line maintenance by the trim upper taking-up out of valve body successively.(5) special executing agency combines valve seat bullet
The movements design of spring structure, makes its cut-out rapid (≤0.5 second) and excess pressure cutout precision AQ1 (1%), loses the disconnected precision AQ5 of crush-cutting
(5%).(6) special valve seat and valve clack sealing structure design, can be achieved valve seal zero leakage.
Gas transmission station described in the utility model has given country in March, 2016 with self-operated type emergency safety stop valve model machine
Pump valve products Quality Supervision and Inspection Center carries out type approval test, and takes the type approval test that the center is provided in September, 2016 part
Report.Report display：(1) break time actual measurement is 0.4 second, it is desirable to be≤0.5 second, so meeting the requirements.(2) excess pressure cutout essence
Degree actual measurement is 1%, it is desirable to be no more than AQ1 (1%)；The thanks to disconnected precision actual measurement of crush-cutting is 4%, it is desirable to be no more than AQ5 (5%)；
So meeting the requirements.(3) valve base sealing is tested, under specified testing pressure, surveys valve seal, dwell time >=2 minute, nothing
Visual leak, so meeting the requirements.(4) hand-reset is tested, after valve emergency cut-off, is opened bypass, can be carried out valve opening
Homing action, so meeting the requirements.
The utility model is simultaneously not limited to the embodiments described above limitation, other any real without departing from spirit of the present utility model
Matter and the change made under principle, modification, replacement, combine, simplify, should be equivalent substitute mode, be included in this practicality
Within new protection domain.
Claims (6)
1. a kind of gas transmission station self-operated type emergency safety stop valve, it is characterised in that：Including executing agency, pressure sensor (3)
And stop valve, the executing agency include shell (25) and be arranged in shell (25) superpressure spring (5), lose pressing spring
(6), lever assembly, superpressure spring (5) upper end is connected with the superpressure spring seat of honour (4), the superpressure spring seat of honour (4) it is upper
Side is provided with epithelium (2), and the pressure sensor (3) is arranged between epithelium (2) and the superpressure spring seat of honour (4) at position, institute
Superpressure spring (5) is stated, pressing spring (6) lower end is lost and connects lever assembly respectively, the other end of the lever assembly and stop valve
Valve rod (21) is connected.
2. gas transmission station as claimed in claim 1 self-operated type emergency safety stop valve, it is characterised in that：The stop valve includes
Bonnet (22), valve body (23), valve rod (21), valve petal body (20) and valve seat (24), the valve body (23) are provided with inlet and outlet,
Valve seat (24) is installed between the import and outlet, valve body (23) upper end is provided with bonnet (22), the valve rod (21)
Through bonnet (22) and extend in valve pocket, valve rod (21) bottom is provided with valve petal body (20), the valve petal body (20) with
Valve seat (24) is connected, and closing spring (19) is equiped with above the valve petal body (20).
3. gas transmission station as claimed in claim 2 self-operated type emergency safety stop valve, it is characterised in that：The executing agency
Shell (25) passes through bolt detachable connection valve body by bolt detachable connection bonnet (22), the bonnet (22)
(23)。
4. gas transmission station as claimed in claim 2 or claim 3 self-operated type emergency safety stop valve, it is characterised in that：The lever group
Part includes control-rod (12), weights balance pin (7), balance control block (8), balance pivot (9), balance weight (10), top pin
Connecting shaft (11), eccentric block (16), bent axle (17) and eccentric block bar (18), balance control block (8), balance pivot (9) are arranged on
Control-rod (12) one end, the balance control block (8) sets around balance pivot (9) rotary type connection, the balance control block (8)
Below superpressure spring (5), the weights balance pin (7), balance weight (10), top pin connection axle (11) are arranged on control-rod
(12) other end, the balance weight (10) connects around top pin connection axle (11) rotary type, and the balance weight (10) is provided with
Groove is linked up with, and the eccentric block bar (18) is supported on groove hook, and eccentric block (16) is provided with the eccentric block bar (18),
The eccentric block (16) connects around bent axle (17) rotary type, and eccentric block bar (18) lower end is connected with valve rod (21).
5. gas transmission station as claimed in claim 4 self-operated type emergency safety stop valve, it is characterised in that：The eccentric block bar
(18) upper end is connected with screw rod (14), and screw rod (14) lower end is equiped with emergency safety split key and SR (15),
Handlebar (13) is equiped with screw rod (14) upper end.
6. gas transmission station as claimed in claim 5 self-operated type emergency safety stop valve, it is characterised in that：The superpressure spring
(5) pressing spring (6), lever assembly, are lost and is provided with two groups, the shell (25) is set to symmetrical formula structure, described outer
Symmetrical formula is respectively provided with one group of superpressure spring (5), loses pressing spring (6), pressure sensor (3) and lever assembly in shell (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720014354.0U CN206429712U (en) | 2017-01-06 | 2017-01-06 | Gas transmission station self-operated type emergency safety stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720014354.0U CN206429712U (en) | 2017-01-06 | 2017-01-06 | Gas transmission station self-operated type emergency safety stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429712U true CN206429712U (en) | 2017-08-22 |
Family
ID=59585525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720014354.0U Active CN206429712U (en) | 2017-01-06 | 2017-01-06 | Gas transmission station self-operated type emergency safety stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206429712U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504234A (en) * | 2017-09-30 | 2017-12-22 | 江苏瑞朗博机械设备有限公司 | A kind of natural gas wellhead emergency shutoff device |
| CN108194672A (en) * | 2018-02-12 | 2018-06-22 | 上海齐耀热能工程有限公司 | Pressure relief device |
| CN113605857A (en) * | 2021-08-23 | 2021-11-05 | 瀚中(南京)科技有限公司 | High-low pressure pilot valve and high-low pressure emergency cut-off device for pipeline |
-
2017
- 2017-01-06 CN CN201720014354.0U patent/CN206429712U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504234A (en) * | 2017-09-30 | 2017-12-22 | 江苏瑞朗博机械设备有限公司 | A kind of natural gas wellhead emergency shutoff device |
| CN108194672A (en) * | 2018-02-12 | 2018-06-22 | 上海齐耀热能工程有限公司 | Pressure relief device |
| CN108194672B (en) * | 2018-02-12 | 2019-11-26 | 上海齐耀热能工程有限公司 | Pressure relief device |
| CN113605857A (en) * | 2021-08-23 | 2021-11-05 | 瀚中(南京)科技有限公司 | High-low pressure pilot valve and high-low pressure emergency cut-off device for pipeline |
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