CN104864104A - Safe one-way stop valve - Google Patents

Safe one-way stop valve Download PDF

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Publication number
CN104864104A
CN104864104A CN201510263710.8A CN201510263710A CN104864104A CN 104864104 A CN104864104 A CN 104864104A CN 201510263710 A CN201510263710 A CN 201510263710A CN 104864104 A CN104864104 A CN 104864104A
Authority
CN
China
Prior art keywords
valve
safe
gland
spool
valve body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510263710.8A
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Chinese (zh)
Inventor
宋春光
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201510263710.8A priority Critical patent/CN104864104A/en
Publication of CN104864104A publication Critical patent/CN104864104A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)

Abstract

The invention discloses a safe one-way stop valve which comprises a valve body (20). The valve body (20) is provided with a valve cover (12), a valve element (19) is arranged in the valve body (20), and a main seal ring (21) is arranged between the valve body (20) and the valve element (19). The safe one-way stop valve is characterized in that a first spring (18) is arranged in the valve element (19), the valve element (19) is provided with a valve rod (13), a second spring (15) is arranged outside the valve rod (13), the upper portion of the valve cover (12) is provided with a packing gland (6), and a packing adjusting sleeve (7), seal ring packing (8) and a seal sleeve (9) are arranged in the packing gland (6); a protective guard (4), a guide pin (5) and an operating handle (3) are arranged on the portion, located over the packing gland (6), of the valve rod (13). According to the safe one-way stop valve, accidents such as a fire disaster, an explosion and personal injury caused by the fact that low-temperature liquid is leaked in quantity due to the damage of gas filling hose sealing elements are completely eradicated effectively, and the installation, usage and maintenance are easy and convenient.

Description

Safe unidirectional stop valve
Technical field:
The present invention relates to Subzero valve technical field, specifically a kind of safe unidirectional stop valve; Taking into account safety valve, one-way valve and stop valve function simultaneously, be mainly used in LNG(LNG Liquefied natural gas) aerating (note) is stood, LN 2(liquid nitrogen), LO 2(liquid oxygen), LH 2(liquid hydrogen), LAr(liquid argon) etc. the rapid pipe joint front end in the filling of cryogenic liquide (temperature is lower than-162 DEG C), filling pipeline.
Background technique:
Stand for the LNG aerating (note) that representativeness is stronger and set forth.LNG(Liquefied Natural Gas), the i.e. english abbreviation of LNG Liquefied natural gas, the rock gas of gaseous state under normal pressure is cooled to-162 DEG C and the liquid condensed into, need low-temperature storage, normal temperature lower density can sharply diminish until become gas, liquid gas volume ratio is 1:600, if confined space will form high pressure.
Along with LNG(LNG Liquefied natural gas) popularization and application in alternative petrol and diesel oil fuel, construction and the operation of LNG gas station are widelyd popularize, fuel is filled for LNG heavily blocks, wherein employing " the LNG air filling gun " introduced by foreign technology without exception, this air filling gun utilizes metallic hose to be connected with LNG filling device, for user provides filling to operate, easy to use, simple to operate.But, damage due to LNG air filling gun inner seal member and easily cause LNG to leak, cause the accidents such as fire, blast and personal injury to occur.
Summary of the invention:
The object of the invention is to overcome the deficiencies in the prior art, a kind of safe unidirectional stop valve is provided, mainly solve existing LNG air filling gun and occur that cryogenic liquide leaks the problem causing the accidents such as fire, blast and personal injury in a large number because Sealing damages.
Technological scheme of the present invention is: safe unidirectional stop valve, comprises valve body, and valve body establishes valve gap, establishes spool in valve body, establishes primary seal circle therebetween; Its special way is, establishes the first spring, spool establishes valve rod in described spool, valve rod peripheral hardware second spring, and Gland is established on valve gap top, and filler adjusting sleeve, seal ring filler and stuffing box gland are established in Gland inside; Valve rod above Gland is established guard shield, guide finger and operating grip.
Further, described Gland is with spiral guide slot.
Compared with the prior art safe unidirectional stop valve of the present invention has outstanding substantive distinguishing features and remarkable progress, 1, spool adopts spring compression mode enhanced leaktightness, stop because air filling gun Sealing damages and occurred that cryogenic liquide leaks in a large number, having caused the accidents such as fire, blast and personal injury; 2, valve rod adopts the mode of half-twist pull-up to open spool, spool close after its rear end high-pressure medium can forward end be unidirectional releases to reduce pressure and ensure safety; 3, install, use and maintenance is simple and convenient.
Accompanying drawing illustrates:
Fig. 1 is main TV structure schematic diagram of the present invention;
Fig. 2 is the sectional view of Fig. 1.
Embodiment:
In order to can better Comprehension and Implementation, describe the safe unidirectional stop valve of the present invention in detail below in conjunction with accompanying drawing.
Embodiment 1, see Fig. 1,2, the valve body 20 being processed into applicable onsite application condition is needed according to design, valve gap bolt 11 is utilized by valve gap 12 to be fixed on valve body 20, valve gap 12 is installed valve bonnet seal circle 14, in valve body 20 inside, spool 19 is installed, primary seal circle 21 and plain cushion 22 is installed therebetween, the lower end mounting nuts 23 of spool 19 and cotter pin 24; In spool 19, install the first spring 18, valve rod 13 is arranged on spool 19 by valve rod set screw nut 16, installs floor clip 17 between valve rod set screw nut 16 and spool 19, at the outer installation of valve rod 13 second spring 15; Gland 6 is processed into spiral guide slot, Gland 6 is installed on valve gap 12 top, and stuffing box packing adjusting sleeve 7, seal ring filler 8 and stuffing box gland 9 are installed in Gland 6 inside, and the top outer of valve gap 12 installs locking nut 10; Valve rod 13 above Gland 6 is installed guard shield 4, guide finger 5 and operating grip 3, at the top mounting nuts 1 of valve rod 13, plain cushion 2 is installed between nut 1 and operating grip 3.
Safe unidirectional stop valve of the present invention, has possessed the blocking-up media flow function of the releasing pressure automatically function of safety valve, the medium one-way flow function of one-way valve and stop valve.Its spool adopts spring compression mode enhanced leaktightness, and valve rod adopts the mode of half-twist pull-up to open spool, spool close after its rear end high-pressure medium can forward end be unidirectional releases to reduce pressure and ensure safety.In using, only need be rotated counterclockwise operating grip just can open spool, interior media can free-flow, when the operating grip that turns clockwise is to closed position, spool is compacted to valve body sealing surface under the action of the spring, interior media stops flowing, if now spool back-end sealing assembly damages and does not also have medium continuation outflow, medium when spool back-end sealing assembly is intact in confined space will constantly boost, and pressure to be elevated to when being greater than spring pressure spool and will automatically to open step-down of releasing to spool front end.

Claims (2)

1. safe unidirectional stop valve, comprises valve body (20), valve body (20) is established valve gap (12), establishes spool (19) in valve body (20), establishes primary seal circle (21) therebetween; It is characterized in that, the first spring (18) is established in described spool (19), spool (19) is established valve rod (13), valve rod (13) peripheral hardware second spring (15), Gland (6) is established on valve gap (12) top, and filler adjusting sleeve (7), seal ring filler (8) and stuffing box gland (9) are established in Gland (6) inside; The valve rod (13) of Gland (6) top establishes guard shield (4), guide finger (5) and operating grip (3).
2. safe unidirectional stop valve according to claim 1, is characterized in that, described Gland (6) is with spiral guide slot.
CN201510263710.8A 2015-05-22 2015-05-22 Safe one-way stop valve Pending CN104864104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510263710.8A CN104864104A (en) 2015-05-22 2015-05-22 Safe one-way stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510263710.8A CN104864104A (en) 2015-05-22 2015-05-22 Safe one-way stop valve

Publications (1)

Publication Number Publication Date
CN104864104A true CN104864104A (en) 2015-08-26

Family

ID=53910149

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510263710.8A Pending CN104864104A (en) 2015-05-22 2015-05-22 Safe one-way stop valve

Country Status (1)

Country Link
CN (1) CN104864104A (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2460810Y (en) * 2001-01-11 2001-11-21 王占宁 Full-sealed no-leakage multipurpose valve
CN2699070Y (en) * 2004-05-28 2005-05-11 张家港市华瑞科技有限公司 Low-temperature cut-off valve
CN2756936Y (en) * 2004-12-29 2006-02-08 宁波安信煤气贮槽有限公司 Multifunction combined valve for liquefied gas
CN101178126A (en) * 2006-11-07 2008-05-14 北京菁华资源科技有限公司 Self-temperature controlled valve
CN101196242A (en) * 2007-12-29 2008-06-11 株洲南方阀门股份有限公司 Quick service type dual-sealing checking-valve
CN201539610U (en) * 2009-09-18 2010-08-04 浙江海一阀门有限公司 Safety valve
CN201925492U (en) * 2011-01-04 2011-08-10 浙江欧尼特阀门有限公司 Double-wishbone spreading type butterfly valve
CN202176730U (en) * 2011-08-17 2012-03-28 永一阀门集团有限公司 Safety stop valve
KR101178901B1 (en) * 2010-02-22 2012-08-31 주식회사 삼신 Safety Relief Valve
CN102808956A (en) * 2012-08-14 2012-12-05 岳阳东方自控工程设备有限公司 Multistage high-pressure buffering angular quickly opened stop valve
CN103206547A (en) * 2013-04-12 2013-07-17 上海开维喜阀门集团有限公司 Anti-impact stop valve sealing structure
CN203686335U (en) * 2013-11-18 2014-07-02 新昌县利永达制冷机械有限公司 Straight-through shut-off valve for ship
CN204664427U (en) * 2015-05-22 2015-09-23 宋春光 Safe unidirectional stop valve

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2460810Y (en) * 2001-01-11 2001-11-21 王占宁 Full-sealed no-leakage multipurpose valve
CN2699070Y (en) * 2004-05-28 2005-05-11 张家港市华瑞科技有限公司 Low-temperature cut-off valve
CN2756936Y (en) * 2004-12-29 2006-02-08 宁波安信煤气贮槽有限公司 Multifunction combined valve for liquefied gas
CN101178126A (en) * 2006-11-07 2008-05-14 北京菁华资源科技有限公司 Self-temperature controlled valve
CN101196242A (en) * 2007-12-29 2008-06-11 株洲南方阀门股份有限公司 Quick service type dual-sealing checking-valve
CN201539610U (en) * 2009-09-18 2010-08-04 浙江海一阀门有限公司 Safety valve
KR101178901B1 (en) * 2010-02-22 2012-08-31 주식회사 삼신 Safety Relief Valve
CN201925492U (en) * 2011-01-04 2011-08-10 浙江欧尼特阀门有限公司 Double-wishbone spreading type butterfly valve
CN202176730U (en) * 2011-08-17 2012-03-28 永一阀门集团有限公司 Safety stop valve
CN102808956A (en) * 2012-08-14 2012-12-05 岳阳东方自控工程设备有限公司 Multistage high-pressure buffering angular quickly opened stop valve
CN103206547A (en) * 2013-04-12 2013-07-17 上海开维喜阀门集团有限公司 Anti-impact stop valve sealing structure
CN203686335U (en) * 2013-11-18 2014-07-02 新昌县利永达制冷机械有限公司 Straight-through shut-off valve for ship
CN204664427U (en) * 2015-05-22 2015-09-23 宋春光 Safe unidirectional stop valve

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PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
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Application publication date: 20150826