CN108662165A - A kind of double-control valve for taking precautions against defective valve - Google Patents
A kind of double-control valve for taking precautions against defective valve Download PDFInfo
- Publication number
- CN108662165A CN108662165A CN201810491920.6A CN201810491920A CN108662165A CN 108662165 A CN108662165 A CN 108662165A CN 201810491920 A CN201810491920 A CN 201810491920A CN 108662165 A CN108662165 A CN 108662165A
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- CN
- China
- Prior art keywords
- connecting tube
- tube
- valve
- ring
- double
- 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.)
- Granted
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- 230000002950 deficient Effects 0.000 title claims abstract description 34
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K1/32—Details
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/10—Means for additional adjustment of the rate of flow
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
A kind of double-control valve for taking precautions against defective valve, is related to a kind of valve, valve body（19）Connecting tube（15）The connection ring of one end（13）It is fixedly connected on moving tube（6）One end, thick connecting tube（10）One end block have with through-hole（23）Circular block（12）, thick connecting tube outer edge surface annular groove B（11）In rubber seal（8）With mobile pipe orifice D（29）Interference fit, the thin connecting tube（9）The other end connects inlet tube, the internal projection ring of moving tube another port inner wall setting（4）It is sleeved in thin connecting tube, the spring being sleeved in thin connecting tube（7）Both ends are withstood on respectively on the anchor ring between the internal projection ring of moving tube and thick connecting tube and thin connecting tube, C-shaped card（33）It is stuck in the annular groove A（2）On, one end of C-shaped card connection stay cord；For the present invention when there is defective valve, pipeline can be closed rapidly by the active force of spring by removing C-shaped card, effectively take precautions against the waste of raw material.
Description
Technical field
The present invention relates to a kind of double-control valves, more particularly to a kind of double-control valve for taking precautions against defective valve.
Background technology
It is known, it is required to add material using pipeline in chemical industry, food-processing industry, coal washing industry or building trade
Liquid feeding body, due to frequently switching on, valve is easy to damage, once pipeline valve failure, be under pressure excessive reason, Ren Yuanji
Originally can not approach, such as close valve not in time, it will be caused by be added liquid it is excessive caused by a large amount of waste of raw materials.
Invention content
In order to overcome the shortcomings of in background technology, the present invention discloses a kind of double-control valve for taking precautions against defective valve, is occurring
When defective valve, pipeline can be closed rapidly by the active force of spring by removing C-shaped card, effectively take precautions against the waste of raw material.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of double-control valve for taking precautions against defective valve, including thin connecting tube, thick connecting tube, moving tube, spring, C-shaped card, circular block
And valve body, the connection tube end in valve body one end are equipped with expanding connection ring, the connection ring is fixedly connected on the one of moving tube
End, one end of thick connecting tube, which blocks, circular block, is evenly distributed in the close outer rim of the circular block and multiple is correspondingly connected with pipe
The through-hole of ring flat-plate between connection ring, the rubber seal being arranged in thick connecting tube outer edge surface annular groove B and mobile pipe orifice D mistakes
It is full of cooperation, thin connecting tube is equipped in the middle part of the other end of thick connecting tube, the thin connecting tube other end connects inlet tube, and moving tube is another
The internal projection ring endoporus A spacer sleeves of Single port inner wall setting in thin connecting tube, distinguish by the both ends of the spring being sleeved in thin connecting tube
It withstands on the anchor ring between the internal projection ring of moving tube and thick connecting tube and thin connecting tube, outside the close other end of thin connecting tube
Edge face is equipped with annular groove A, and C-shaped card is stuck on the annular groove A, one end of C-shaped card connection stay cord.
The double-control valve of the described strick precaution defective valve is equipped with external screw thread B in the outer rim of thin connecting tube, thin connecting tube it is outer
Screw thread B is connected on the internal thread C of feed liquor connecting tube one end inner wall setting, the external screw thread A of the feed liquor connecting tube other end connect into
Liquid pipe, feed liquor connecting tube middle part outer rim be equipped with annular groove A, moving tube another port inner wall setting internal projection ring set into
In liquid connecting tube, the both ends of the spring that is sleeved in feed liquor connecting tube withstand on respectively moving tube internal projection ring and thick connecting tube with carefully connect
On anchor ring between taking over, C-shaped card is stuck on the annular groove A, and the ring flat-plate of moving tube one end and thick connecting tube are forced by C-shaped card
Circular block formed interval；When wherein C-shaped card is removed the spring head on thick connecting tube circular block withstand on ring flat-plate obtain valve
Pipe plugging when failure.
The double-control valve of the strick precaution defective valve, is equipped with protruding circular ring, circular block at the close mider hole of ring flat-plate
It is equipped with the annular groove of respective protrusions annulus.
The double-control valve of the strick precaution defective valve, the outer rim of the circular block is equipped with external screw thread D, in thick connecting tube
Single port inner face is equipped with internal thread B, and the external screw thread D of circular block is fixedly connected with the internal thread B of thick connecting tube.
The double-control valve of the strick precaution defective valve is equipped with internal thread A, moving tube one end outer rim in the inner wall of connection ring
The external screw thread C of setting is fixedly connected with the internal thread A.
The double-control valve of the described strick precaution defective valve, the opening negative direction rear of C-shaped card protrude after being equipped with, drawstring
One end be bundled in after in the perforation protruded.
The double-control valve of the strick precaution defective valve, outer lug is respectively equipped on the outside of the both ends of C-shaped card.
The double-control valve of the strick precaution defective valve is equipped with becket bridle in the other end of drawstring.
The double-control valve of the strick precaution defective valve, the valve body are ball valve, and discharge nozzle is equipped in the other end of valve body.
The handle of the double-control valve of the strick precaution defective valve, the setting of valve body valve rod outer end is round or "-" type hand
Handle.
Due to using technical solution as described above, the present invention to have the advantages that：
The double-control valve of the present invention for taking precautions against defective valve, by increasing quick closing valve between former valve and inlet tube
The control device of door removes the C-shaped card of control device when there is defective valve, and at this moment spring energy release heads on moving tube
The movement of internal projection circumferential direction inlet tube direction, while the closing of the through-hole of circular block is obtained control liquid by the ring flat-plate of valve body connecting tube
The purpose no longer flowed out；The present invention becket bridle of drawstring can be placed on conveniently can and place, convenient for when there is defective valve dangerous situation
Emergency use has effectively taken precautions against the waste of raw material；The present invention be suitable for chemical industry, food-processing industry, coal washing industry or
Building trade.
Description of the drawings
Fig. 1 is the assembling structure schematic diagram of the present invention；
Fig. 2 is the feed liquor connecting pipe structure schematic diagram of the present invention；
Fig. 3 is the moving tube structural schematic diagram of the present invention；
Fig. 4 is thick, the thin connecting pipe structure schematic diagram of integral structure of the present invention；
Fig. 5 is the through-hole and annular groove distributed architecture schematic diagram of circular block of the present invention；
Fig. 6 is the C-shaped card dimensional structure diagram of the present invention；
Fig. 7 is the structural schematic diagram of the present invention；
In figure：1, external screw thread A；2, annular groove A；3, feed liquor connecting tube；4, internal projection ring；5, endoporus A；6, moving tube；7, spring；
8, rubber seal；9, thin connecting tube；10, thick connecting tube；11, annular groove B；12, circular block；13, connection ring；14, internal thread
A；15, connecting tube；16, valve rod；17, handle；18, discharge nozzle；19, valve body；20, pore A；21, ring flat-plate；22, annular groove；
23, through-hole；24, internal thread B；25, endoporus B；26, external screw thread B；27, endoporus C；28, external screw thread C；29, endoporus D；30, interior spiral shell
Line C；31, becket bridle；32, drawstring；33, C-shaped card；34, pore B；35, external screw thread D；36, rear protrusion；37, it perforates；38, evagination
It rises；39, protruding circular ring.
Specific implementation mode
The present invention can be explained in more detail by the following examples, the open purpose of the present invention is intended to the protection present invention
All changes and improvements in range, the invention is not limited in the following examples；
The double-control valve of strick precaution defective valve in conjunction with described in attached drawing 1~7, including thin connecting tube 9, thick connecting tube 10, moving tube
6, spring 7, C-shaped card 33, circular block 12 and valve body 19, valve body 19 are ball valve, and discharge nozzle is equipped in the other end of the valve body 19
18, the handle 17 of 19 valve rod of valve body, 16 outer end setting is round or "-" type handle 17, is connected to the connecting tube of 19 one end of valve body
15 ends are equipped with expanding connection ring 13, and the connection ring 13 is fixedly connected on one end of moving tube 6, that is, in connection ring 13
Inner wall be equipped with internal thread A14, the external screw thread C28 of 6 one end outer rim setting of moving tube is fixedly connected with the internal thread A14, connects
When synchronize and do encapsulation process, can place sealing ring in the appropriate place of link position in connection or wind unsintered tape on screw thread
" it should be noted that sealing ring is arranged when pipeline connects or belongs to conventional technical means, therefore this Shen using unsintered tape sealing
Please no longer it is described in detail one by one ", one end of thick connecting tube 10, which blocks, circular block 12, uniformly divides in the close outer rim of the circular block 12
Multiple through-holes 23 for being correspondingly connected with ring flat-plate 21 between pipe 15 and connection ring 13 are furnished with, in 10 outer edge surface annular groove B11 of thick connecting tube
The rubber seal 8 of setting is interference fitted with 6 endoporus D29 of moving tube, and thin connecting tube is equipped in the middle part of the other end of thick connecting tube 10
9, it is equipped with external screw thread B26 in the outer rim of thin connecting tube 9, the external screw thread B26 of thin connecting tube 9 is connected in 3 one end of feed liquor connecting tube
On the internal thread C30 of wall setting, the external screw thread A1 connection inlet tubes of 3 other end of feed liquor connecting tube, at the middle part of feed liquor connecting tube 3
Outer rim is equipped with annular groove A2, and the internal projection ring 4 of 6 another port inner wall setting of moving tube is sleeved in feed liquor connecting tube 3, is sleeved on feed liquor
7 both ends of spring in connecting tube 3 withstand on the ring between the internal projection ring 4 of moving tube 6 and thick connecting tube 10 and thin connecting tube 9 respectively
On face, C-shaped card 33 is stuck on the annular groove A2, and the ring flat-plate 21 and thick connecting tube 10 of 6 one end of moving tube are forced by C-shaped card 33
Circular block 12 forms interval；The spring 7 heads on the circular block 12 of thick connecting tube 10 and withstands on ring flat-plate 21 when wherein C-shaped card 33 is removed
Obtain pipe plugging when defective valve.
As an alternative, in the case where being not provided with feed liquor connecting tube 3,9 other end of thin connecting tube connects inlet tube, moves
The 4 endoporus A5 spacer sleeves of internal projection ring of 6 another port inner wall setting of pipe are moved in thin connecting tube 9, the bullet being sleeved in thin connecting tube 9
7 both ends of spring are withstood on respectively on the anchor ring between the internal projection ring 4 of moving tube 6 and thick connecting tube 10 and thin connecting tube 9, are carefully being connected
The close other end outer edge surface of pipe 9 is equipped with annular groove A2, and C-shaped card 33 is stuck on the annular groove A2；In conjunction with attached drawing 1 or 6, C
The opening negative direction rear of shape card 33 protrudes 36 after being equipped with, after one end of drawstring 32 is bundled in the perforation 37 of protrusion 36,
It is respectively equipped with outer lug 38 on the outside of the both ends of C-shaped card 33, becket bridle 31 is equipped in the other end of drawstring 32.
In conjunction with attached drawing 1,4 and 5, the sealing effect problem when present invention is in view of blocking, in the close mider hole of ring flat-plate 21
Place is equipped with protruding circular ring 39, and circular block 12 is equipped with the annular groove 22 of respective protrusions annulus 39, the outer rim of the circular block 12
Equipped with external screw thread D35, internal thread B24 is equipped in the Single port inner face of thick connecting tube 10, the external screw thread D35 of circular block 12 with slightly connect
The internal thread B24 of take over 10 is fixedly connected.
The present invention use process is as follows：
The external screw thread A1 of the application feed liquor connecting tube 3 assembled is connect with comprising water pipe, mother tube or fluid pipeline, then
Main valve " not shown in figure " is opened, so that raw material liq is connected, using the handle 17 of 16 outer end of valve rod with the sphere in moving valve 19
It rotates, raw material liq is just entered the pore B34 of feed liquor connecting tube 3 by water pipe, mother tube or fluid pipeline after opening valve body 19, carefully
The endoporus C27 of connecting tube 9, the endoporus B25 of thick connecting tube 10, the through-hole 23 of circular block 12, connecting tube 15 pore A20 enter valve
Body 19 is then flowed out by discharge nozzle 18；When there is 19 failure of valve body, by pulling the becket bridle 31 of drawstring 32, C-shaped card 33 to be detached from
The annular groove A2 of feed liquor connecting tube 3, at this moment the energy release of spring 7, heads on the internal projection ring 4 of moving tube 6 to inlet tube direction
It is mobile, while ring flat-plate 21 of the moving tube 6 with 19 connecting tube 15 of moving valve closes the through-hole 23 of circular block 12, protruding circular ring 39
It is inserted into the annular groove 22 of circular block 12, obtains preferable plugging effect, liquid just no longer flows out；At this moment the valve that can more renew
Body 19, the becket bridle 31 of drawstring 32 can be placed on by the present invention can and locate, should jerk when convenient for defective valve dangerous situation occur conveniently
It is dynamic.
Part not in the detailed description of the invention is the prior art.
Claims (10)
1. a kind of double-control valve for taking precautions against defective valve, including thin connecting tube（9）, thick connecting tube（10）, moving tube（6）, spring
（7）, C-shaped card（33）, circular block（12）And valve body（19）, it is characterized in that：In valve body（19）The connecting tube of one end（15）End is set
There is expanding connection ring（13）, the connection ring（13）It is fixedly connected on moving tube（6）One end, thick connecting tube（10）One end
Closure has circular block（12）, in the circular block（12）Close outer rim be evenly distributed with and multiple be correspondingly connected with pipe（15）With connect
Ring（13）Between ring flat-plate（21）Through-hole（23）, thick connecting tube（10）Outer edge surface annular groove B（11）The rubber seal of middle setting
（8）With moving tube（6）Endoporus D（29）Interference fit, thick connecting tube（10）The other end in the middle part of be equipped with thin connecting tube（9）, described
Thin connecting tube（9）The other end connects inlet tube, moving tube（6）The internal projection ring of another port inner wall setting（4）Endoporus A（5）Between
Spacer is in thin connecting tube（9）On, it is sleeved on thin connecting tube（9）On spring（7）Both ends withstand on moving tube respectively（6）Internal projection ring
（4）With thick connecting tube（10）With thin connecting tube（9）Between anchor ring on, in thin connecting tube（9）Close other end outer edge surface on
Equipped with annular groove A（2）, C-shaped card（33）It is stuck in the annular groove A（2）On, C-shaped card（33）Connection stay cord（32）One end.
2. the double-control valve according to claim 1 for taking precautions against defective valve, it is characterized in that：In thin connecting tube（9）Outer rim
Equipped with external screw thread B（26）, thin connecting tube（9）External screw thread B（26）It is connected to feed liquor connecting tube（3）The interior spiral shell of one end inner wall setting
Line C（30）On, feed liquor connecting tube（3）The external screw thread A of the other end（1）Inlet tube is connected, in feed liquor connecting tube（3）Middle part outer rim
Equipped with annular groove A（2）, moving tube（6）The internal projection ring of another port inner wall setting（4）It is sleeved on feed liquor connecting tube（3）On, it is sleeved on
Feed liquor connecting tube（3）On spring（7）Both ends withstand on moving tube respectively（6）Internal projection ring（4）With thick connecting tube（10）With it is thin
Connecting tube（9）Between anchor ring on, C-shaped card（33）It is stuck in the annular groove A（2）On, by C-shaped card（33）Force moving tube（6）
The ring flat-plate of one end（21）With thick connecting tube（10）Circular block（12）Form interval；Wherein C-shaped card（33）Spring when removing
（7）Head on thick connecting tube（10）Circular block（12）Withstand on ring flat-plate（21）Obtain pipe plugging when defective valve.
3. the double-control valve according to claim 1 or 2 for taking precautions against defective valve, it is characterized in that：In ring flat-plate（21）It is close
Protruding circular ring is equipped at mider hole（39）, circular block（12）It is equipped with respective protrusions annulus（39）Annular groove（22）.
4. the double-control valve according to claim 1 or 2 for taking precautions against defective valve, it is characterized in that：The circular block（12）'s
Outer rim is equipped with external screw thread D（35）, in thick connecting tube（10）Single port inner face be equipped with internal thread B（24）, circular block（12）It is outer
Screw thread D（35）With thick connecting tube（10）Internal thread B（24）It is fixedly connected.
5. the double-control valve according to claim 1 for taking precautions against defective valve, it is characterized in that：In connection ring（13）Inner wall set
There is internal thread A（14）, moving tube（6）The external screw thread C of one end outer rim setting（28）It is fixedly connected with the internal thread A（14）.
6. the double-control valve according to claim 1 for taking precautions against defective valve, it is characterized in that：C-shaped card（33）Opening negative side
It is protruded after posteriorly face is equipped with（36）, drawstring（32）One end be bundled in after protrude（36）Perforation（37）On.
7. the double-control valve according to claim 6 for taking precautions against defective valve, it is characterized in that：In C-shaped card（33）Both ends
Outside is respectively equipped with outer lug（38）.
8. the double-control valve according to claim 6 for taking precautions against defective valve, it is characterized in that：In drawstring（32）The other end set
There is becket bridle（31）.
9. the double-control valve according to claim 1 for taking precautions against defective valve, it is characterized in that：The valve body（19）For ball valve,
In valve body（19）The other end be equipped with discharge nozzle（18）.
10. the double-control valve of the strick precaution defective valve according to claim 1 or 9, it is characterized in that：Valve body（19）Valve rod（16）
The handle of outer end setting（17）For round or "-" type handle（17）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491920.6A CN108662165B (en) | 2018-05-22 | 2018-05-22 | A kind of double-control valve for taking precautions against defective valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491920.6A CN108662165B (en) | 2018-05-22 | 2018-05-22 | A kind of double-control valve for taking precautions against defective valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108662165A true CN108662165A (en) | 2018-10-16 |
| CN108662165B CN108662165B (en) | 2019-11-26 |
Family
ID=63777446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810491920.6A Active CN108662165B (en) | 2018-05-22 | 2018-05-22 | A kind of double-control valve for taking precautions against defective valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108662165B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259541Y (en) * | 1996-02-16 | 1997-08-13 | 王清殿 | Bi-directional safety valve |
| WO2011025141A2 (en) * | 2009-08-28 | 2011-03-03 | Hong Yong Ki | Water-saving device |
| CN203009954U (en) * | 2012-12-21 | 2013-06-19 | 重庆世豪机车制造有限公司 | Sheet safety valve for gas joint |
| CN203743585U (en) * | 2014-03-04 | 2014-07-30 | 朱山川 | Double control valve |
| CN104791543A (en) * | 2015-04-21 | 2015-07-22 | 中国石油大学(北京) | Mechanical emergency shutdowm valve |
-
2018
- 2018-05-22 CN CN201810491920.6A patent/CN108662165B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259541Y (en) * | 1996-02-16 | 1997-08-13 | 王清殿 | Bi-directional safety valve |
| WO2011025141A2 (en) * | 2009-08-28 | 2011-03-03 | Hong Yong Ki | Water-saving device |
| CN203009954U (en) * | 2012-12-21 | 2013-06-19 | 重庆世豪机车制造有限公司 | Sheet safety valve for gas joint |
| CN203743585U (en) * | 2014-03-04 | 2014-07-30 | 朱山川 | Double control valve |
| CN104791543A (en) * | 2015-04-21 | 2015-07-22 | 中国石油大学(北京) | Mechanical emergency shutdowm valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108662165B (en) | 2019-11-26 |
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