CN113790274B - Outdoor air valve - Google Patents
Outdoor air valve Download PDFInfo
- Publication number
- CN113790274B CN113790274B CN202111095653.9A CN202111095653A CN113790274B CN 113790274 B CN113790274 B CN 113790274B CN 202111095653 A CN202111095653 A CN 202111095653A CN 113790274 B CN113790274 B CN 113790274B
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- CN
- China
- Prior art keywords
- valve
- rod
- air
- clamping
- compression
- 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.)
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 35
- 238000007906 compression Methods 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 210000003437 trachea Anatomy 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 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
- F16K1/02—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 with screw-spindle
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
Abstract
The utility model provides an outdoor air valve, includes the valve body, the valve body is cylindricly, the inside leaking stoppage indicating part that is used for leaking stoppage that is equipped with of valve body, valve body outside top is equipped with rust-resistant change part, the trachea is connected to the valve body both sides, rust-resistant change part take place can be convenient when corrosion with the valve body separation is changed, leaking stoppage indicating part utilizes leaking gas trigger part work to carry out leaking stoppage and instruction. Can prevent rust, and can leak hunting leak stoppage and instruction independently.
Description
Technical Field
The invention belongs to the field of outdoor air valves, and particularly relates to an outdoor air valve.
Background
The air valves installed in the outdoor gas pipelines are in open areas far away from people, are in open air environments, are easy to rust, and cannot be closed in case of emergency.
The outdoor air valve is subjected to daily wind, rain and drenching, the sealing ring is easy to age to cause air leakage, and the air valve is in an unsealed place, so that the air leakage cannot be found in time, and a great potential safety hazard exists. Therefore, an outdoor air valve capable of preventing rust and automatically detecting leakage and indicating is urgently needed.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an outdoor air valve which can still finish valve closing and is easy to replace rusted parts under the condition that a valve is rusted, and can automatically leak and leak stoppage and indicate.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the outdoor air valve comprises a valve body, wherein the valve body is cylindrical, a plugging indicating part is arranged in the valve body, and an antirust replacement part is arranged at the top of the outer side of the valve body.
Preferably, the two sides of the valve body are connected with air pipes, the rust-proof replacement part can be conveniently separated from the valve body for replacement when being corroded, and the leakage stopping indication part performs leakage stopping and indication by utilizing the operation of the leakage gas triggering part.
Preferably, the valve body comprises a valve casing, the notch department of valve casing both sides has set firmly the trachea, the valve casing is equipped with the valve rod along axis direction slip cap, the valve rod is close to ground one end and has set firmly the sealing block, the valve casing is located the sealing block is equipped with the valve pocket, the valve rod is kept away from ground one end and has set firmly down the kicking block, through valve rod spring coupling between kicking block and the valve casing down.
Preferably, the valve casing top is located the valve rod both sides and slides and be equipped with the fixture block, the fixture block is kept away from valve rod one side has set firmly the clamping lever, the fixture block with set firmly the fixed block between the valve casing, the clamping lever with fixed block sliding through connection, the clamping lever is located the fixed block with set firmly the clamping lever spring holder between the valve casing, the clamping lever spring holder with through clamping lever spring coupling between the valve casing, the clamping lever is kept away from fixture block one end slip runs through to the valve casing is outside, the clamping lever is kept away from fixture block one end rotation is connected with the clamping lever, the clamping lever rotates and is connected with the buckle.
Preferably, the rust-proof replacement component comprises a valve cover, the valve cover is arranged at the top of the valve casing, a threaded pipe is sleeved on the valve cover along the axis direction in a sliding mode, the threaded pipe is fixed with the valve cover through a clamping pin, one end of the clamping pin is rotationally connected with a connecting rod, the connecting rod is far away from the clamping pin and rotationally connected with a push handle, the push handle is rotationally arranged on the outer side face of the valve casing, a screw is arranged on the threaded sleeve of the threaded pipe in a threaded mode, an upper jacking block is fixedly arranged at one end, close to the ground, of the screw, and a valve disc is fixedly arranged at the top of the screw.
Preferably, the plugging indicating component comprises a compression rod, the compression rod is in threaded connection with the valve casing, a compression rotary disc is fixedly arranged on the end face of the outer side of the valve casing, a piston head is fixedly arranged at the other end of the compression rod, and the piston head is in sliding connection with the compression cavity.
Preferably, the compression chamber is connected with the compression gas circuit, follows the compression gas circuit direction is provided with the air guide piston, the air guide piston with valve casing sliding connection, the air guide piston with connect through the air guide spring between the valve casing, the air guide piston is followed the compression gas circuit opposite side is equipped with the rubber gasbag, the rubber gasbag establish with the valve casing is located trachea connection lateral wall department, follows the air guide piston slip direction is opened has the air escape way to the valve casing with the trachea connection face, the air escape way with be equipped with the ball between the air guide piston, the ball with connect through the ball spring between the valve casing, the ball with it has annular air duct to open between the air escape way. Preferably, the air guide piston is made of metal, two contacts are arranged on the contact side wall of the air guide piston and the valve housing, and the valve housing is located on the outer side of each contact and fixedly provided with an indicator lamp.
Advantageous effects
The outdoor air valve provided by the invention has the following improvements and advantages compared with the prior art:
1. by arranging the rust-proof replacement part, the rusted valve can be closed and the rusted part can be replaced, so that the valve is safe and convenient.
2. By arranging the leakage stopping indicating component, leakage can be automatically detected, leakage stopping can be rapidly and automatically performed, and meanwhile, the indicating lamp is lightened, so that further measures are conveniently taken by inspection personnel.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is a partial enlarged view of FIG. 2 at D;
FIG. 5 is an enlarged view of a portion of FIG. 2 at E;
FIG. 6 is a cross-sectional view taken at C-C of FIG. 5;
fig. 7 is a perspective view of a valve body portion of the present invention.
In the figure: valve body 1, leak stopping indicator 3, rust prevention replacement 2, valve housing 101, air tube 114, valve rod 107, sealing block 108, valve cavity 109, lower top block 105, valve rod spring 106, clip block 104, clip rod 102, fixing block 103, clip rod spring seat 113, clip rod spring 112, clip handle 110, clip 111, valve cap 201, threaded tube 205, clip pin 204, connecting rod 208, push handle 207, screw 203, upper top block 202, valve disc 206, compression rod 307, compression dial 306, piston head 308, compression air path 315, air guide piston 303, air guide spring 302, rubber bladder 301, air release path 312 leading to the interface of valve housing 101 and air tube 114, ball 310, ball spring 30, annular air groove 311, contact 304, indicator light 305.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1-7, an outdoor air valve comprises a valve body 1, wherein the valve body 1 is cylindrical, a plugging indicating component 3 is arranged in the valve body 1, and an anti-rust replacing component 2 is arranged at the top of the outer side of the valve body 1.
Preferably, the two sides of the valve body 1 are connected with air pipes, and the rust-proof replacement part 2 can be conveniently separated from the valve body 1 for replacement when being corroded, and the leakage stoppage indication part 3 performs leakage stoppage and indication by utilizing the operation of the leakage gas trigger part.
Preferably, the valve body 1 comprises a valve casing 101, air pipes 114 are fixedly arranged at notches on two sides of the valve casing 101, a valve rod 107 is sleeved on the valve casing 101 in a sliding mode along the axial direction, a sealing block 108 is fixedly arranged at one end, close to the ground, of the valve rod 107, the valve casing 101 is provided with a valve cavity 109, a lower jacking block 105 is fixedly arranged at one end, far away from the ground, of the valve rod 107, and the lower jacking block 105 is connected with the valve casing 101 through a valve rod spring 106.
Preferably, the top of the valve casing 101 is provided with clamping blocks 104 in a sliding manner on two sides of the valve rod 107, one side, away from the valve rod 107, of the clamping blocks 104 is fixedly provided with clamping rods 102, fixed blocks 103 are fixedly arranged between the clamping blocks 104 and the valve casing 101, the clamping rods 102 are connected with the fixed blocks 103 in a sliding and penetrating manner, clamping rod spring seats 113 are fixedly arranged between the fixed blocks 103 and the valve casing 101, the clamping rod spring seats 113 are connected with the valve casing 101 through clamping rod springs 112, one ends, away from the clamping blocks 104, of the clamping rods 102 are in a sliding and penetrating manner outside the valve casing 101, one ends, away from the clamping blocks 104, of the clamping rods 102 are rotationally connected with clamping handles 110, and the clamping handles 110 are rotationally connected with clamping buckles 111.
Preferably, the rust-proof replacement part 2 comprises a valve cover 201, the valve cover 201 is arranged at the top of the valve casing 101, a threaded pipe 205 is sleeved on the valve cover 201 in a sliding manner along the axial direction, the threaded pipe 205 is fixed with the valve cover 201 through a clamping pin 204, one end of the clamping pin 204 is rotationally connected with a connecting rod 208, the connecting rod 208 is rotationally connected with a push handle 207 far away from the clamping pin 204, the push handle 207 is rotationally arranged on the outer side surface of the valve casing 101, a screw 203 is sleeved on the threaded pipe 205 in a threaded manner, an upper jacking block 202 is fixedly arranged on one end of the screw 203 close to the ground, and a valve disc 206 is fixedly arranged on the top of the screw 203.
Preferably, the plugging indicating component 3 comprises a compression rod 307, the compression rod 307 is in threaded connection with the valve casing 101, a compression rotary table 306 is fixedly arranged on the end face of the compression rod 307 outside the valve casing 101, a piston head 308 is fixedly arranged on the other end of the compression rod 307, and the piston head 308 is in sliding connection with the compression cavity 314.
Preferably, the compression cavity 314 is connected with a compression gas path 315, a gas guide piston 303 is arranged along the direction of the compression gas path 315, the gas guide piston 303 is in sliding connection with the valve housing 101, the gas guide piston 303 is connected with the valve housing 101 through a gas guide spring 302, a rubber air bag 301 is arranged on the other side of the gas guide piston 303 along the compression gas path 315, the rubber air bag 301 is arranged at the side wall of the gas pipe connection with the valve housing 101, a gas release channel 312 is arranged along the sliding direction of the gas guide piston 303 to lead to the connection surface of the valve housing 101 and the gas pipe 114, a ball 310 is arranged between the gas release channel 312 and the gas guide piston 303, the ball 310 is connected with the valve housing 101 through a ball spring 309, and an annular gas groove 311 is arranged between the ball 310 and the gas release channel 312.
Preferably, the air guide piston 303 is made of metal, two contacts 304 are arranged on the contact side wall of the air guide piston 303 and the valve housing 101, and an indicator lamp 305 is fixedly arranged on the outer side of the contact 304 of the valve housing 101.
Principle of operation
When the outdoor air valve starts to be started from a static state, the sealing block 108 is positioned at the center of the valve cavity 109, and air flow can flow smoothly. When the valve is required to be closed but the threaded pipe 205 and the screw 203 are rusted, the push handle 207 is rotated, so that the bayonet 204 is pushed to move towards the side far away from the push handle 207 to release the threaded pipe 205, the threaded pipe 205 is sprung up under the action of the valve rod spring 106, and the sealing block 108 is attached to the upper surface of the valve cavity 109 to close the air path.
At this time, the valve rust-dead portion needs to be replaced, and the latch handle 110 is rotated to disengage the upper portion of the latch 111 from the valve cover 201. Meanwhile, as the rotation part of the clamping handle 110 is in a cam shape, when the clamping handle 110 rotates, the clamping rod 102 moves towards the direction of the valve rod 107, a part of the clamping block 104 moves to the lower part of the lower jacking block 105, the sealing block 108 is prevented from being opened when the parts are replaced, the contact part of the top of the clamping block 104 and the lower jacking block 105 is in an inclined plane shape, the lower jacking block 105 is further clamped, and the rust-proof replacement part 2 is taken down for replacement.
When the valve is installed, rotating the compression dial 306 pushes the piston head 308 to compress the air in the compression chamber 314. When the gas valve is outdoors and leaks, it is difficult for the inspector to find this. At this time, the leaked gas is leaked out from the joint between the gas pipe 114 and the valve casing 101, enters the annular gas groove 311 through the gas leakage channel 312, finally pushes the gas guide piston 303 to move through the ball 310, the compression gas channel 315 is conducted, and the joint between the gas pipe 114 and the valve casing 101 is plugged by inflating the rubber airbag 301. Simultaneously, the two contacts 304 are conducted by the air guide piston 303, and the indicator lamp 305 is lightened to indicate inspection personnel to carry out maintenance.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (5)
1. The outdoor air valve comprises a valve body (1), and is characterized in that the valve body (1) is cylindrical, a leakage stopping indication part (3) for stopping leakage is arranged in the valve body (1), an anti-rust replacement part (2) is arranged at the top of the outer side of the valve body (1), two sides of the valve body (1) are connected with air pipes, the anti-rust replacement part (2) can be conveniently separated from the valve body (1) for replacement when being corroded, and the leakage stopping indication part (3) is used for stopping leakage and indicating by utilizing a leakage gas triggering part to work; the rust-proof replacement component (2) comprises a valve cover (201), the valve cover (201) is arranged at the top of the valve casing (101), a threaded pipe (205) is sleeved on the valve cover (201) in a sliding mode along the axial direction, the threaded pipe (205) is fixed with the valve cover (201) through a clamping pin (204), one end of the clamping pin (204) is rotationally connected with a connecting rod (208), the connecting rod (208) is far away from the clamping pin (204) and rotationally connected with a push handle (207), the push handle (207) is rotationally arranged on the lateral surface of the outer side of the valve casing (101), a screw (203) is sleeved on the threaded pipe (205) in a threaded mode, an upper jacking block (202) is fixedly arranged on one end, close to the ground, of the screw (203), and a valve disc (206) is fixedly arranged on the top of the screw (203); the plugging indicating component (3) comprises a compression rod (307), the compression rod (307) is in threaded connection with the valve casing (101), a compression rotary disc (306) is fixedly arranged on the outer side end face of the valve casing (101) on the compression rod (307), a piston head (308) is fixedly arranged at the other end of the compression rod (307), and the piston head (308) is in sliding connection with the compression cavity (314).
2. The outdoor air valve according to claim 1, wherein the valve body (1) comprises a valve casing (101), air pipes (114) are fixedly arranged at notches on two sides of the valve casing (101), the valve casing (101) is sleeved with a valve rod (107) in a sliding mode along the axial direction, one end, close to the ground, of the valve rod (107) is fixedly provided with a sealing block (108), the valve casing (101) is located in the sealing block (108) and is provided with a valve cavity (109), one end, far away from the ground, of the valve rod (107) is fixedly provided with a lower jacking block (105), and the lower jacking block (105) is connected with the valve casing (101) through a valve rod spring (106).
3. The outdoor air valve according to claim 2, wherein the top of the valve housing (101) is located at two sides of the valve rod (107) and is slidably provided with a clamping block (104), the clamping block (104) is far away from one side of the valve rod (107) and is fixedly provided with a clamping rod (102), a fixed block (103) is fixedly arranged between the clamping block (104) and the valve housing (101), the clamping rod (102) is slidably connected with the fixed block (103) in a penetrating manner, the clamping rod (102) is located between the fixed block (103) and the valve housing (101) and is fixedly provided with a clamping rod spring seat (113), the clamping rod spring seat (113) is connected with the valve housing (101) through a clamping rod spring (112), one end of the clamping rod (102) far away from the clamping block (104) is slidably connected to the outside of the valve housing (101), one end of the clamping rod (102) is rotationally connected with a clamping handle (110), and the clamping handle (110) is rotationally connected with a clamping handle (111).
4. An outdoor air valve according to claim 1, characterized in that the compression chamber (314) is connected with a compression air path (315), an air guide piston (303) is arranged along the direction of the compression air path (315), the air guide piston (303) is slidably connected with the valve housing (101), the air guide piston (303) is connected with the valve housing (101) through an air guide spring (302), the air guide piston (303) is provided with a rubber air bag (301) along the other side of the compression air path (315), the rubber air bag (301) is arranged at the side wall of the valve housing (101) and is provided with an air discharge channel (312) leading to the connection surface of the valve housing (101) and the air pipe (114) along the sliding direction of the air guide piston (303), a ball (310) is arranged between the air discharge channel (312) and the air guide piston (303), the ball (310) is connected with the valve housing (101) through a ball spring (309), and an annular air discharge channel (311) is arranged between the ball (310) and the air discharge channel (312).
5. The outdoor air valve according to claim 4, wherein the air guide piston (303) is made of metal, two contacts (304) are arranged on the contact side wall of the air guide piston (303) and the valve housing (101), and the valve housing (101) is located on the outer side of the contacts (304) and fixedly provided with an indicator lamp (305).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111095653.9A CN113790274B (en) | 2021-09-18 | 2021-09-18 | Outdoor air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111095653.9A CN113790274B (en) | 2021-09-18 | 2021-09-18 | Outdoor air valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113790274A CN113790274A (en) | 2021-12-14 |
| CN113790274B true CN113790274B (en) | 2024-01-26 |
Family
ID=78878928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111095653.9A Active CN113790274B (en) | 2021-09-18 | 2021-09-18 | Outdoor air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113790274B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4760866A (en) * | 1978-06-28 | 1988-08-02 | H. Adler Associates, Inc. | Combination stop and pressure reducing valve and stop cock version |
| DE19646234C1 (en) * | 1996-11-08 | 1997-07-24 | Inventec Ges Fuer Tech Innovat | Valve shaft drive for stop valve with leakage safety device |
| JP2010207667A (en) * | 2009-03-06 | 2010-09-24 | Yachiyo Industry Co Ltd | Coating material leakage detector for coating material valve |
| CN206754573U (en) * | 2017-05-03 | 2017-12-15 | 深圳安博智控科技有限公司 | A kind of liquefied petroleum gas valve safety detection device |
| CN207715844U (en) * | 2017-12-03 | 2018-08-10 | 邵陈光 | A kind of valve with leakage warning function |
| CN208397425U (en) * | 2018-05-17 | 2019-01-18 | 天津一阀科技有限公司 | A kind of leakproof remote-end alarm valve |
| CN212004347U (en) * | 2019-12-30 | 2020-11-24 | 固安县朔程燃气有限公司 | Ball valve for urban gas pipeline |
| CN212804431U (en) * | 2020-07-30 | 2021-03-26 | 苏州泉中全能源科技有限公司 | Natural gas valve with gas leakage protection |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6554024B2 (en) * | 2001-01-23 | 2003-04-29 | Cooper Cameron Corporation | Stem seal pressure telltale |
| US7114516B2 (en) * | 2002-10-15 | 2006-10-03 | Takasago Engineering Co., Ltd. | Leak-detecting check valve, and leak-detection alarm system that uses said check valve |
| US20070068225A1 (en) * | 2005-09-29 | 2007-03-29 | Brown Gregory C | Leak detector for process valve |
-
2021
- 2021-09-18 CN CN202111095653.9A patent/CN113790274B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4760866A (en) * | 1978-06-28 | 1988-08-02 | H. Adler Associates, Inc. | Combination stop and pressure reducing valve and stop cock version |
| DE19646234C1 (en) * | 1996-11-08 | 1997-07-24 | Inventec Ges Fuer Tech Innovat | Valve shaft drive for stop valve with leakage safety device |
| JP2010207667A (en) * | 2009-03-06 | 2010-09-24 | Yachiyo Industry Co Ltd | Coating material leakage detector for coating material valve |
| CN206754573U (en) * | 2017-05-03 | 2017-12-15 | 深圳安博智控科技有限公司 | A kind of liquefied petroleum gas valve safety detection device |
| CN207715844U (en) * | 2017-12-03 | 2018-08-10 | 邵陈光 | A kind of valve with leakage warning function |
| CN208397425U (en) * | 2018-05-17 | 2019-01-18 | 天津一阀科技有限公司 | A kind of leakproof remote-end alarm valve |
| CN212004347U (en) * | 2019-12-30 | 2020-11-24 | 固安县朔程燃气有限公司 | Ball valve for urban gas pipeline |
| CN212804431U (en) * | 2020-07-30 | 2021-03-26 | 苏州泉中全能源科技有限公司 | Natural gas valve with gas leakage protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113790274A (en) | 2021-12-14 |
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Effective date of registration: 20231216 Address after: Room 901, Building C, Phase II, Lanshan County, Wangxianqiao Community, Xingsha Street, Changsha County, Hunan Province, 410100 Applicant after: Tan Xing Applicant after: Liu Yun Address before: 518000 No. 89, Square North Street, Jiefang Road, Luohu District, Shenzhen, Guangdong Applicant before: Zhu Ziqi |
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Effective date of registration: 20231226 Address after: No. 4-401, Building B, Phase II, Chemical Industry Zone, Wantian International Building Materials City, No. 388, Taiyangshan Road, Dingziwan Street, Wangcheng District, Changsha City, Hunan Province, 410000 Applicant after: Hunan Dongqi Energy Co.,Ltd. Address before: Room 901, Building C, Phase II, Lanshan County, Wangxianqiao Community, Xingsha Street, Changsha County, Hunan Province, 410100 Applicant before: Tan Xing Applicant before: Liu Yun |
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