CN101469783A - Automatic anti-leakage valve for liquefied natural gas and valve group - Google Patents
Automatic anti-leakage valve for liquefied natural gas and valve group Download PDFInfo
- Publication number
- CN101469783A CN101469783A CNA2008101036556A CN200810103655A CN101469783A CN 101469783 A CN101469783 A CN 101469783A CN A2008101036556 A CNA2008101036556 A CN A2008101036556A CN 200810103655 A CN200810103655 A CN 200810103655A CN 101469783 A CN101469783 A CN 101469783A
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- Prior art keywords
- valve
- valve body
- housing
- ball valve
- natural gas
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- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 57
- 230000006837 decompression Effects 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 20
- 210000002445 nipple Anatomy 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 230000037361 pathway Effects 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 230000008439 repair process Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- -1 comprise housing Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Taps Or Cocks (AREA)
Abstract
A liquefied natural gas automatic anti-leakage valve and valve assembly is applicable in liquefied natural gas pipelines, the valve comprises a ball valve, a casing, a valve rod and a sealing ring, wherein the casing is provided with an inlet channel and an outlet channel; one end of the valve rod, passing through the upper part of the casing, is connected with the upper end of the ball valve, while the other end of the valve rod is provided with a gear driven by a motor; a valve body is arranged between the ball valve and the casing, the inner cavity of the valve body is attached to the outer surface of the ball valve; a valve body driving shaft is extended on the lower end of the valve body, the other end of the valve body, passing through the lower part of the casing is arranged with a worm and screw mechanism driven by the motor; a bearing and a sealing ring are arranged between the casing and the valve body, a main sealing ring is arranged between the ball valve and the valve body, a sensing element connected with a sensor is arranged in the main sealing ring; a repairing window is arranged on the surface of the casing, two ends of the inlet channel and the outlet channel are respectively provided with flanges. The invention is convenient to replace disabled main sealing ring and can improve working efficiency.
Description
Technical field
The present invention relates to the automatic safety device in a kind of LNG Liquefied natural gas pipeline, refer to a kind of automatic anti-leakage valve for liquefied natural gas and valve sets especially.
Background technique
The anti-leakage valve of existing industrial LNG Liquefied natural gas mostly is shown in Figure 1, it is disclosed patent document number 01215256.0, name is called " a kind of pipeline valve ", it comprises ball valve handle 1 ', valve rod 2 ', ball valve 4 ' and housing 5 ', ball valve 4 ' is arranged in the housing 5 ', be provided with seal ring 7 ' between ball valve 4 ' and the housing 5 ', be provided with in the described housing 5 ' and be interconnected and liquid in-out passage 6 ' point-blank, the pit 3 ' that valve rod 2 ' one end passes housing 5 ' top and ball valve 4 ' upper end fixes together, valve rod 2 ' the other end is connected with handle 1 ', ball valve 4 ' middle part is provided with a through hole 41 ', described through hole 41 ' connects with the liquid in-out passage 6 ' of housing, the valve seat of this ball valve 4 ' is housing a 5 ' intracavity bottom, the shortcoming of this kind LNG Liquefied natural gas anti-leakage valve is: in case seal ring 7 ' lost efficacy, when changing seal ring 7 ', get and earlier the LNG Liquefied natural gas in the liquefied pot is lightered earlier in other liquefied pot, after treating that LNG Liquefied natural gas in this jar empties, housing 5 ' is opened, after taking out ball valve 4 ', cleaning housing 5 ' inner chamber and ball valve 4 ', behind the seal ring 7 ' that more renews, be installed in seal ring 7 ' and ball valve 4 ' in the housing 5 ' in the lump, again with housing 5 ' locking, this replacing process is too complicated, influences working efficiency.
Summary of the invention
The object of the present invention is to provide a kind of automatic anti-leakage valve for liquefied natural gas and valve sets, it is changed the primary seal circle convenience that lost efficacy between valve body and the ball valve and increases work efficiency.
To achieve these goals, technical solution of the present invention is: a kind of automatic anti-leakage valve for liquefied natural gas, comprise housing, ball valve, valve rod and seal ring, be provided with in the described housing and be interconnected and feed pathway on same straight line and liquid outlet channel, described valve rod one end passes housing top and is connected with the groove of ball valve upper end, the other end of wherein said valve rod is equipped with the gear of motor band, be provided with valve body between described ball valve and the housing, the outer surface of described body cavity and ball valve fits, described valve body lower end is extended a valve body live axle, described valve body live axle passes lower housing portion, worm gear by motor-operated worm drive is installed on it, be provided with bearing and seal ring between described housing and the valve body, be provided with bearing and seal ring between described valve body and the valve rod, be provided with the primary seal circle between described ball valve and the valve body, be provided with the sensor that is connected with sensor in the described primary seal circle, described surface of shell offers the repairing window, the feed pathway of described housing, the liquid outlet channel left and right sides is separately installed with suction flange and outlet(discharge) flange.
Automatic anti-leakage valve for liquefied natural gas of the present invention, wherein said valve body is combined by upper valve body and following valve body.
Automatic anti-leakage valve for liquefied natural gas of the present invention, wherein said primary seal circle reaches down between the valve body surface of contact at the through hole outer periphery and the upper valve body at two ends, the ball valve left and right sides.
Automatic anti-leakage valve for liquefied natural gas of the present invention, wherein said valve rod is connected by key with ball valve.
Automatic anti-leakage valve for liquefied natural gas of the present invention, wherein said housing upper and lower end are equipped with the nipple of logical nitrogen.
A kind of automatic anti-leakage valve for liquefied natural gas group, it is formed by two described anti-leakage valve serial connections, wherein the suction flange of the outlet(discharge) flange of first valve and second valve replaces with connecting tube and the outlet of first valve and the import of second valve is linked together, between two anti-leakage valve housings, be provided with Decompression valves, be equipped with the nipple that is connected with the liquid entering hole of Decompression valves on the housing of described two valves, described Decompression valves is fixed on two valves by stiffening rib, described Decompression valves is a ball valve, described Decompression valves liquid outlet is connected with the liquid natural gas jar after by the liquefaction process pipeline, offer ball valve orifice and valve hole on the ball valve of described two valves and the valve body respectively, and ball valve orifice and valve hole connect, the through hole of ball valve orifice and ball valve connects, valve hole communicates with the hole of the nipple of housing, being provided with seal ring, be provided with the sensor that is connected with sensor in the described seal ring in the described pressure release valve housing and between the ball valve with nipple and liquefaction process pipeline connection.
After adopting such scheme, when the primary seal circle of automatic anti-leakage valve for liquefied natural gas of the present invention lost efficacy, owing in the primary seal circle, be provided with the sensor that is connected with external sensor, therefore can by sensor sensing to, valve body at once, being about to valve body revolves along the longitudinal shaft at its centre of sphere place and turn 90 degrees, corresponding the revolving of through hole on the valve body turn 90 degrees at this moment, make the feed pathway on the valve housing be shut by valve body, just can open the repairing window on the surface of shell this moment, the primary seal circle that lost efficacy taken out to change will repair window behind the new primary seal circle again and shut just passablely, whole process is changed the primary seal circle that lost efficacy conveniently and time saving and energy saving, has improved working efficiency.
Description of drawings
Fig. 1 is existing LNG Liquefied natural gas pipeline valve structural representation;
Fig. 2 is the structural representation of automatic anti-leakage valve for liquefied natural gas of the present invention;
Fig. 3 be among Fig. 2 A-A to cross-sectional view;
Fig. 4 is another example structure schematic representation of automatic anti-leakage valve for liquefied natural gas of the present invention;
Fig. 5 be among Fig. 4 B-B to the ball valve cross-sectional view.
Embodiment
See also the structural representation of automatic anti-leakage valve for liquefied natural gas of the present invention shown in Figure 2, this valve 1 comprises housing 11, ball valve 12, valve rod 13, with valve body 14 and the seal ring 15 of ball valve 12 with the centre of sphere, valve body 14 reaches down by upper valve body 141, and valve body 142 combines, the extended valve body live axle 1421 in following valve body 142 bottoms, be provided with in the housing 11 and be interconnected and feed pathway on same straight line 111 and liquid outlet channel 112, seal by upper end cap 113 and lower end cap 114 respectively below reaching above the housing 11, the top of housing 11 and bottom are respectively equipped with the nipple 117 of an inflated with nitrogen, it can make the LNG Liquefied natural gas of passing through carry out cold insulation, reduce LNG Liquefied natural gas liquefaction, feed pathway 111 left sides of housing 11 connect suction flange 18, liquid outlet channel 112 right sides of housing 11 connect outlet(discharge) flange 19, valve rod 13 1 ends pass upper end cap 113 backs and link together with groove 121 clampings of ball valve 12 upper ends and by key, the other end of valve rod 13 is installed a gear 16 by the motor band, the outer surface of valve body 14 inner chambers and ball valve 12 is fitted, after the other end of valve body live axle 1421 passes lower end cap 114, worm gear 17 by motor-operated worm drive is installed on it, is being respectively arranged with primary seal circle 15 on the through hole outer periphery at two ends, ball valve 12 left and right sides and between upper valve body 141 and following valve body 142 surface of contact.In primary seal circle 15, be provided with the sensor that is connected with sensor, in the A-A cross-sectional view as shown in Figure 3, housing 11 surfaces offer repairs window 115, this repairing window is the tee-slot (not shown), be provided with Sealing shield ring 311, seal ring 31 and bearing 21 between valve rod 13 and the upper valve body 141 from top to bottom, be provided with bearing 61 and seal ring 51 between upper valve body 141 and the housing 11 from top to bottom, be provided with bearing 62, seal ring 52 and Sealing shield ring 521 between following valve body 142 and housing 11 and the lower end cap 114 from top to bottom.
Under the valve normal operation, valve rod 13 drives ball valve 12 motions, open and close LNG Liquefied natural gas by housing liquid inlet and outlet passage, and valve body 14 keeps transfixion, when 15 inefficacies of primary seal circle need to change, then valve rod 13 keeps transfixion with ball valve 12, and following valve body 142 drives upper valve body 141 simultaneously and rotates together under valve body live axle 1421 effects of its underpart, close the liquid in-out passage of LNG Liquefied natural gas.When the primary seal circle 15 of valve lost efficacy, owing in primary seal circle 15, be provided with the sensor that is connected with external sensor, therefore can by sensor sensing to, valve body 14 at once, to be valve body 14 with the longitudinal shaft at its centre of sphere place revolve turn 90 degrees, corresponding the revolving of through hole on the valve body 14 turn 90 degrees at this moment, make advancing on the housing 11 of valve 1, liquid outlet channel 111 and 112 is blocked by valve body 14, just can open housing 11 lip-deep repairing windows 115 this moment, the primary seal circle 15 that lost efficacy rotated to repair window 115 places, take out to change and to repair window 115 again behind the new primary seal circle and build just passable.
Another example structure schematic representation of automatic anti-leakage valve for liquefied natural gas of the present invention as shown in Figure 4, this embodiment is serially connected by two valves 1, link together by body 2 between the feed pathway of the liquid outlet channel of first valve 1 and second valve 1, all offer nipple 116 on the housing 11 of two valves 1, two nipples 116 all are connected to the liquid entering hole of a Decompression valves 10, and enter the housing inner chamber of Decompression valves 10 by liquid entering hole, this Decompression valves 10 is an ordinary ball valve, it is fixed on two valves 1 by stiffening rib, it comprises the ball valve 102 in housing 101 and the housing 101, Decompression valves 10 liquid outlets are connected with the liquid natural gas jar after by the liquefaction process pipeline, be provided with seal ring 104 and seal ring 105 with nipple 116 and liquefaction process pipeline connection in the housing 101 and between the ball valve 102, be provided with the sensor that is connected with sensor in seal ring 104 and the seal ring 105, on the ball valve 12 of two valves 1 and valve body 14, offer ball valve orifice 122 and valve hole 1411 respectively, and ball valve orifice 122 connects with valve hole 1411, ball valve orifice 122 connects with the through hole of ball valve 12, and valve hole 1411 communicates with the hole of the nipple 116 of housing 11.Ball valve lead to the hole site on the ball valve 12 can be with reference to figure 4 and shown in Figure 5.
Two valves 1 of present embodiment are under normal operation, the valve rod 13 of two valves all drives ball valve 12 motions separately, opening and closing LNG Liquefied natural gas advances by housing, liquid outlet channel, Decompression valves 10 is in closed condition, LNG Liquefied natural gas is through main passage to following road process pipe, when closing LNG Liquefied natural gas, close two valves 1 earlier, open Decompression valves 10 this moment, entering Decompression valves 10 behind the nipple 116 of LNG Liquefied natural gas in two valve 1 pipelines on ball valve orifice 122 and valve hole 1411 and housing 11 is back in the liquid natural gas jar by the liquefaction process pipeline, after finishing remaining LNG Liquefied natural gas processing, close Decompression valves 10 again.
When present embodiment lost efficacy when the primary seal circle 15 of first valve 1, owing in primary seal circle 15, be provided with the sensor that is connected with external sensor, therefore can by sensor sensing to, close the valve body 14 of first valve at once, to be valve body 14 with the longitudinal shaft at its centre of sphere place revolve turn 90 degrees, corresponding the revolving of through hole on the valve body 14 turn 90 degrees at this moment, make the feed pathway 111 on the housing 11 of this first valve 1 be shut by valve body 14, just can open housing 11 lip-deep repairing windows 115 this moment, the primary seal circle 15 that lost efficacy is rotated to repairing window 115 places, taking-up is changed and will be repaired window 115 again behind the new primary seal circle 15 and build just passable, when if the primary seal circle of second valve 1 15 lost efficacy, owing in primary seal circle 15, be provided with the sensor that is connected with external sensor, therefore can by sensor sensing to, close first valve 1 and second valve 1 at once, the valve body 14 that is about to first valve and second valve all revolves with the longitudinal shaft at centre of sphere place separately and turn 90 degrees, the all corresponding rotation 90 of through hole on the valve body 14 of two valves 1 is at this moment spent, just can open the housing 11 lip-deep repairing windows of second valve 1 this moment, the primary seal circle 15 that lost efficacy is rotated to repairing window place, taking-up is changed and will be repaired window again behind the new primary seal circle and build just passable, it is convenient and time saving and energy saving that whole process is changed seal ring, improved working efficiency.If when the seal ring on the Decompression valves 10 104 and 105 lost efficacy,, so after can closing first valve 1 and second valve 1 immediately, repair or change Decompression valves 10 because its inside is provided with the sensor that is connected with sensor.This structure anti-leakage valve can further prevent the gas leak in the valve, uses more reliable.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in related domain make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1, a kind of automatic anti-leakage valve for liquefied natural gas, comprise housing (11), ball valve (12), valve rod (13) and seal ring (15), be provided with in the described housing (11) and be interconnected and feed pathway on same straight line (111) and liquid outlet channel (112), described valve rod (13) one ends pass housing (11) top and are connected with the groove (121) of ball valve upper end, it is characterized in that: the other end of described valve rod (13) is equipped with the gear (16) of motor band, be provided with valve body (14) between described ball valve (12) and the housing (11), the outer surface of described valve body (14) inner chamber and ball valve (12) fits, a valve body live axle (1421) is extended in described valve body (14) lower end, described valve body live axle (1421) passes housing (11) bottom, worm gear (17) by motor-operated worm drive is installed on it, be provided with bearing (61 between described housing (11) and the valve body (14), 62) and seal ring (51,52), be provided with bearing (21) and seal ring (31) between described valve body (14) and the valve rod (13), be provided with primary seal circle (15) between described ball valve (12) and the valve body (13), be provided with the sensor that is connected with sensor in the described primary seal circle (15), described housing (11) surface offers repairs window (115), the feed pathway (111) of described housing (11), liquid outlet channel (112) left and right sides is separately installed with suction flange (18) and outlet(discharge) flange (19).
2, automatic anti-leakage valve for liquefied natural gas as claimed in claim 1 is characterized in that: described valve body (14) is combined by upper valve body (141) and following valve body (142).
3, automatic anti-leakage valve for liquefied natural gas as claimed in claim 2 is characterized in that: through hole outer periphery and upper valve body (141) that described primary seal circle (15) is positioned at ball valve (12) two ends, the left and right sides reach down between valve body (142) surface of contact.
4, automatic anti-leakage valve for liquefied natural gas as claimed in claim 3 is characterized in that: described valve rod (13) is connected by key with ball valve (12).
5, automatic anti-leakage valve for liquefied natural gas as claimed in claim 4 is characterized in that: described housing (11) upper and lower end is equipped with the nipple (117) of logical nitrogen.
6, a kind of valve sets of using one of claim 1-5 described automatic anti-leakage valve for liquefied natural gas, it is characterized in that: it is formed by two described anti-leakage valve serial connections, wherein the suction flange of the outlet(discharge) flange of first valve (1) and second valve (1) replaces with connecting tube (2) and the outlet of first valve (1) and the import of second valve (1) is linked together, between two anti-leakage valve housings (11), be provided with Decompression valves (10), be equipped with the nipple (116) that is connected with the liquid entering hole of Decompression valves (10) on the housing of described two valves (11), described Decompression valves (10) is fixed on two valves (1) by stiffening rib, described Decompression valves (10) is a ball valve, described Decompression valves (10) liquid outlet is connected with the liquid natural gas jar after by the liquefaction process pipeline, offer ball valve orifice (122) and valve hole (1411) on the ball valve (12) of described two valves (1) and the valve body (14) respectively, and ball valve orifice (122) connects with valve hole (1411), ball valve orifice (122) connects with the through hole of ball valve (12), valve hole (1411) communicates with the hole of the nipple (116) of housing (11), be provided with seal ring (104 with nipple (116) and liquefaction process pipeline connection in the housing (101) of described Decompression valves (10) and between the ball valve (102), 105), described seal ring is provided with the sensor that is connected with sensor in (104,105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101036556A CN101469783B (en) | 2008-04-09 | 2008-04-09 | Automatic anti-leakage valve for liquefied natural gas and valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101036556A CN101469783B (en) | 2008-04-09 | 2008-04-09 | Automatic anti-leakage valve for liquefied natural gas and valve group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101469783A true CN101469783A (en) | 2009-07-01 |
| CN101469783B CN101469783B (en) | 2010-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101036556A Expired - Fee Related CN101469783B (en) | 2008-04-09 | 2008-04-09 | Automatic anti-leakage valve for liquefied natural gas and valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101469783B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090040A (en) * | 2011-10-31 | 2013-05-08 | 朱万枫 | Smart ball valve |
| CN113175534A (en) * | 2021-04-21 | 2021-07-27 | 星五季(江苏)科技发展有限公司 | Double-flange butterfly valve with good anti-freezing effect |
| CN115306787A (en) * | 2022-10-10 | 2022-11-08 | 烟台中宇航空液压有限公司 | Oil leakage prevention device for electro-hydraulic servo valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2401746Y (en) * | 1999-11-17 | 2000-10-18 | 吴忠仪表股份有限公司 | Electric gas control valve |
| CN2802214Y (en) * | 2005-06-24 | 2006-08-02 | 宁波杰克龙阀门有限公司 | Gas ball valve |
| CN201184427Y (en) * | 2008-04-09 | 2009-01-21 | 韩先锋 | LNG automatic leakage-proof valve and valve set |
-
2008
- 2008-04-09 CN CN2008101036556A patent/CN101469783B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090040A (en) * | 2011-10-31 | 2013-05-08 | 朱万枫 | Smart ball valve |
| CN113175534A (en) * | 2021-04-21 | 2021-07-27 | 星五季(江苏)科技发展有限公司 | Double-flange butterfly valve with good anti-freezing effect |
| CN115306787A (en) * | 2022-10-10 | 2022-11-08 | 烟台中宇航空液压有限公司 | Oil leakage prevention device for electro-hydraulic servo valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101469783B (en) | 2010-12-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shijiazhuang ENN Gas Co., Ltd. Assignor: Han Xianfeng|Han Fei Contract record no.: 2012130000122 Denomination of invention: Automatic anti-leakage valve for liquefied natural gas and valve group Granted publication date: 20101208 License type: Exclusive License Open date: 20090701 Record date: 20120709 |
|
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Zhiyong Inventor before: Han Xianfeng Inventor before: Han Fei |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170905 Address after: 301700 Tianjin city Wuqing District Huangzhuang Street Binhe Road on the north side of Linda garden building 24, No. 203 1 Patentee after: Wang Zhiyong Address before: Jiangdong District of Ningbo city in Zhejiang province 315040 Jinyuan Lane No. 225 room 603 Co-patentee before: Han Fei Patentee before: Han Xianfeng |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20180409 |