CN102927293B - Emergency cut-off valve at bottom of built-in tank in low-temperature liquid storage tank - Google Patents
Emergency cut-off valve at bottom of built-in tank in low-temperature liquid storage tank Download PDFInfo
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- CN102927293B CN102927293B CN201210442726.1A CN201210442726A CN102927293B CN 102927293 B CN102927293 B CN 102927293B CN 201210442726 A CN201210442726 A CN 201210442726A CN 102927293 B CN102927293 B CN 102927293B
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Abstract
Disclosed is an emergency cut-off valve of at the bottom of a built-in tank in a low-temperature liquid storage tank. The emergency cut-off valve mainly comprises a main valve portion and a driving portion, the main valve portion is welded to the bottom of the low-temperature liquid storage tank through a bottom plate; the driving portion is placed at the top of the low-temperature liquid storage tank, and the main valve portion and the driving portion are connected through two stainless steel ropes, wherein one rope is a work rope, and the other rope is an emergency rope; a valve seat is fixed on the bottom plate of the main valve portion and connected with a guide frame, and a large valve clack which is capable of vertically moving and is matched with the valve seat to form a large sealing pair is built in the guide frame; and a small valve clack which is capable of vertically moving and is matched with a centre valve hole of the large valve clack to form a small sealing pair is arranged above the large valve clack through a valve rod. Compared with ordinary emergency cut-off valves, the emergency cut-off valve is small in executing mechanism, reasonable and compact in structure and good in using effects.
Description
Technical field
What the present invention relates to is the Emergeny Cutoff Valves at the bottom of built-in tank in a kind of cryogenic liquid tank, belongs to low temperature machinery.
Background technique
Large-scale low-temperature liquid storage vessel pipeline, in the time occurring promptly to leak situation, if there is no emergency cut-off measure, will cause a large amount of leaked liquids, easily cause security incident.Way in industry is on output pipeline, to add Emergeny Cutoff Valves at present, and the drawback of doing is like this: pipeline has fault to want cutting-off valve, can make partially liq stay between storage tank and cut-off valve, increases cold damage, and has potential safety hazard; Moreover, if occur between cut-off valve and storage tank by drawing crack, just effective emergency cut-off leaked liquid.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, and provide the Emergeny Cutoff Valves at the bottom of built-in tank in a kind of cryogenic liquid tank, in the time that outside network runs into emergency, this valve can cut off rapidly storage tank and exterior tubing, ensures the safety of cryogenic liquid tank.
The present invention seeks to complete by following technical solution, it mainly comprises primary valve part and drive part, and described primary valve part is fixedly installed in the bottom of cryogenic liquid tank by base plate; Drive part is placed in the top of cryogenic liquid tank, is that working rope, another root are that urgent two stainless steel ropes of restricting are connected between the two by one.When working rope lost efficacy, start promptly rope.
On the base plate of described primary valve part, be fixed with valve seat, be connected with leading truck on valve seat, leading truck is built-in with and can moves up and down and coordinate the big valve flap that forms a large sealing pair with valve seat; Big valve flap top is equipped with one by valve rod and can moves up and down and coordinate with big valve flap center valve opening the little flap that forms little sealing pair.
Described leading truck top is connected with a leading truck lid, and described big valve flap top is connected with valve clack cover; On little flap, dispose one and be positioned at the guide rod that big valve flap moves up and down for little flap, valve rod is through described valve clack cover and leading truck lid, and its end is connected in stainless steel rope.
Described drive part is arranged on the top of cryogenic liquid tank by adapter, it is mainly made up of actuator, piston rod, driving pin, upper valve rod, guide pad and protective housing, actuator comprises that cylinder block, piston, spring and piston outer end are connected with piston rod, and this piston rod is connected with by driving pin the upper valve rod that end connects stainless steel rope.
The present invention adopts double valve plates lobe hard sealing structure, and valve seat is made with stainless steel material, and big or small valve clack sealing surface adopts built-up welding stellite to make.
The present invention adopts Double-clack structure, and valve opening order, under the traction of stainless steel rope, first open little flap, after pressure reduction reduces, open big valve flap, reach maximum flow ability, when it can ensure that Emergeny Cutoff Valves due zero is revealed sealability, can reduce valve opening moment, compared with common emergency cut-off valve arrangement, the actuator of use is less, structure is more reasonable, compact, and using effect is better.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of primary valve part of the present invention.
Fig. 3 is the structural representation of drive part of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail: shown in Fig. 1, the present invention mainly comprises primary valve part 1 and drive part 2, and described primary valve part is fixedly installed in the bottom of cryogenic liquid tank 4 by base plate 3; Drive part 2 is placed in the top of cryogenic liquid tank 4, is connected between the two by two stainless steel ropes 5, and wherein one is that working rope, another root are urgent rope.
Shown in Fig. 2, on the base plate 3 of described primary valve part 1, be fixed with valve seat 6, be connected with leading truck 7 on valve seat 6, leading truck 7 is built-in with and can moves up and down and coordinate the big valve flap 8 that forms a large sealing pair with valve seat 6; Big valve flap 8 tops are equipped with one by valve rod 9 and can move up and down and coordinate with big valve flap 8 center valve openings the little flap 10 that forms little sealing pair.
Described leading truck 7 tops are connected with a leading truck lid 11, and described big valve flap 8 tops are connected with valve clack cover 12; On little flap 10, dispose one and be positioned at the guide rod 13 that big valve flap 8 moves up and down for little flap 10, valve rod 9 is through described valve clack cover 12 and leading truck lid 11, and its end is directly or indirectly connected in stainless steel rope 5.
Valve seat 6 of the present invention adopts stainless steel material to make, and big or small valve clack sealing surface adopts built-up welding stellite to make and formed double valve plates lobe hard sealing structure.
Shown in Fig. 3, described drive part 2 is by taking over 14 tops that are arranged on cryogenic liquid tank 4, it is mainly made up of actuator, piston rod 15, driving pin 16, upper valve rod 17, guide pad 18 and protective housing 19, actuator comprises the air inlet/outlet 21 outside cylinder block 20, piston, spring and cylinder block 20, piston outer end is connected with piston rod 15, and this piston rod 15 is connected with by driving pin 16 upper valve rod 17 that end connects stainless steel rope 5.
Embodiment: at the bottom of built-in tank of the present invention, Emergeny Cutoff Valves is a kind of large-scale low-temperature liquid storage vessel special valve, and this valve is divided into: main valve and driving two large divisions.
Primary valve part 1 mainly forms (see figure 2) by base plate, valve seat, leading truck, big or small flap, valve clack cover, leading truck lid, guide rod etc.Little flap and a sealing pair of big valve flap composition, big valve flap and a sealing pair of valve seat composition, little flap can move up and down in big valve flap, and has guide rod guiding; Big valve flap can move up and down in leading truck.
Drive part 2 mainly forms (see figure 3) by actuator's (inside having spring), piston rod, driving pin, upper valve rod, guide pad, adapter, protective housing and air inlet/outlet etc.Base plate in primary valve part is welded in liquid storage vessel bottom, and drive part is placed in storage tank top, and middle be that working rope, one are urgent rope by two mono-of stainless steel rope 5() connected (see figure 1).
Drive part under nominal situation, actuator's (single-acting cylinder) air inlet, the spring pressurized in actuator, its piston rod shrinks, and by stainless steel rope, big or small flap is mentioned to Open valve.When running into emergency work condition and need to cutting off the UNICOM of storage tank and exterior line, gas loses in actuator, under spring action, piston rod is stretched out, flap is under the acting in conjunction of gravity and storage tank pressure medium, throttle down, the UNICOM of fast shut-off storage tank and exterior line, avoids a large amount of leaked liquids, guarantees safety.
Claims (4)
1. an Emergeny Cutoff Valves at the bottom of built-in tank in cryogenic liquid tank, it mainly comprises primary valve part and drive part, it is characterized in that described primary valve part is fixedly installed in the bottom of cryogenic liquid tank by base plate; Drive part is placed in the top of cryogenic liquid tank, is that working rope, another root are that urgent two stainless steel ropes of restricting are connected between the two by one;
On the base plate of described primary valve part, be fixed with valve seat, be connected with leading truck on valve seat, leading truck is built-in with and can moves up and down and coordinate the big valve flap that forms a large sealing pair with valve seat; Big valve flap top is equipped with one by valve rod and can moves up and down and coordinate with big valve flap center valve opening the little flap that forms little sealing pair.
2. Emergeny Cutoff Valves at the bottom of built-in tank in cryogenic liquid tank according to claim 1, is characterized in that described leading truck top is connected with a leading truck lid, and described big valve flap top is connected with valve clack cover; On little flap, dispose one and be positioned at the guide rod that big valve flap moves up and down for little flap, valve rod is through described valve clack cover and leading truck lid, and its end connects stainless steel rope.
3. Emergeny Cutoff Valves at the bottom of built-in tank in cryogenic liquid tank according to claim 1, is characterized in that valve seat adopts stainless steel material to make, and big or small valve clack sealing surface adopts built-up welding stellite to make and formed double valve plates lobe hard sealing structure.
4. Emergeny Cutoff Valves at the bottom of built-in tank in cryogenic liquid tank according to claim 1, it is characterized in that described drive part is arranged on the top of cryogenic liquid tank by adapter, it is mainly made up of actuator, piston rod, driving pin, upper valve rod, guide pad and protective housing, actuator comprises that cylinder block, piston, spring and piston outer end are connected with piston rod, and this piston rod is connected with by driving pin the upper valve rod that end connects stainless steel rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442726.1A CN102927293B (en) | 2012-11-08 | 2012-11-08 | Emergency cut-off valve at bottom of built-in tank in low-temperature liquid storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442726.1A CN102927293B (en) | 2012-11-08 | 2012-11-08 | Emergency cut-off valve at bottom of built-in tank in low-temperature liquid storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102927293A CN102927293A (en) | 2013-02-13 |
| CN102927293B true CN102927293B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210442726.1A Active CN102927293B (en) | 2012-11-08 | 2012-11-08 | Emergency cut-off valve at bottom of built-in tank in low-temperature liquid storage tank |
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| CN (1) | CN102927293B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469753A (en) * | 2018-12-07 | 2019-03-15 | 四川格林流体控制设备有限公司 | A kind of safe bottom valve of LNG peculiar to vessel |
| CN112253768A (en) * | 2020-10-26 | 2021-01-22 | 张家港市金秋环保科技有限公司 | Bypass structure and using method thereof |
| CN112797176B (en) * | 2021-01-29 | 2021-12-17 | 青岛精锐机械制造有限公司 | Pilot-operated type angle seat valve capable of preventing sealing part from being subjected to large load force |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB121916A (en) * | 1918-06-26 | 1919-01-09 | John Coxon | Improvements in or relating to Automatic and Emergency Stop Valves. |
| CN2103051U (en) * | 1991-07-24 | 1992-04-29 | 李景海 | Self-balance clevice for cut-off valve |
| JPH10246661A (en) * | 1997-03-04 | 1998-09-14 | Kansai Gas Meter Co Ltd | Cut-off stroke value inspection jig for emergency cut-off valve in gas meter |
| JPH10266282A (en) * | 1997-03-24 | 1998-10-06 | Hitachi Higashi Service Eng:Kk | Outlet valve and liquid storage vessel |
| CN2345788Y (en) * | 1998-04-25 | 1999-10-27 | 莫龙飞 | Sleeve-type connecting tube internal-mouth open-close device for pressure container |
| CN2789520Y (en) * | 2005-04-30 | 2006-06-21 | 吴锅子 | Pneumatic fast cut-off valve |
| CN200975505Y (en) * | 2006-09-08 | 2007-11-14 | 陈世修 | Pneumatic brake valve with boosting unlock function |
| CN201268487Y (en) * | 2008-07-09 | 2009-07-08 | 随州市东特汽车有限公司 | Internal cut-off valve apparatus of chemical tank |
| CN201747937U (en) * | 2010-08-15 | 2011-02-16 | 芜湖中集瑞江汽车有限公司 | Built-in isolating valve |
| CN202946701U (en) * | 2012-11-08 | 2013-05-22 | 杭州杭氧工装泵阀有限公司 | Built-in tank bottom emergency cut-off valve in cryogenic liquid storage tank |
-
2012
- 2012-11-08 CN CN201210442726.1A patent/CN102927293B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB121916A (en) * | 1918-06-26 | 1919-01-09 | John Coxon | Improvements in or relating to Automatic and Emergency Stop Valves. |
| CN2103051U (en) * | 1991-07-24 | 1992-04-29 | 李景海 | Self-balance clevice for cut-off valve |
| JPH10246661A (en) * | 1997-03-04 | 1998-09-14 | Kansai Gas Meter Co Ltd | Cut-off stroke value inspection jig for emergency cut-off valve in gas meter |
| JPH10266282A (en) * | 1997-03-24 | 1998-10-06 | Hitachi Higashi Service Eng:Kk | Outlet valve and liquid storage vessel |
| CN2345788Y (en) * | 1998-04-25 | 1999-10-27 | 莫龙飞 | Sleeve-type connecting tube internal-mouth open-close device for pressure container |
| CN2789520Y (en) * | 2005-04-30 | 2006-06-21 | 吴锅子 | Pneumatic fast cut-off valve |
| CN200975505Y (en) * | 2006-09-08 | 2007-11-14 | 陈世修 | Pneumatic brake valve with boosting unlock function |
| CN201268487Y (en) * | 2008-07-09 | 2009-07-08 | 随州市东特汽车有限公司 | Internal cut-off valve apparatus of chemical tank |
| CN201747937U (en) * | 2010-08-15 | 2011-02-16 | 芜湖中集瑞江汽车有限公司 | Built-in isolating valve |
| CN202946701U (en) * | 2012-11-08 | 2013-05-22 | 杭州杭氧工装泵阀有限公司 | Built-in tank bottom emergency cut-off valve in cryogenic liquid storage tank |
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| Publication number | Publication date |
|---|---|
| CN102927293A (en) | 2013-02-13 |
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