CN113339694A - Safety device for preventing liquid from being sprayed by liquid feeding and retreating gun of LNG (liquefied Natural gas) dispenser - Google Patents
Safety device for preventing liquid from being sprayed by liquid feeding and retreating gun of LNG (liquefied Natural gas) dispenser Download PDFInfo
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- CN113339694A CN113339694A CN202110748976.7A CN202110748976A CN113339694A CN 113339694 A CN113339694 A CN 113339694A CN 202110748976 A CN202110748976 A CN 202110748976A CN 113339694 A CN113339694 A CN 113339694A
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- Prior art keywords
- pipe
- fixed
- liquid
- fixedly connected
- liquid adding
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Links
- 239000007788 liquid Substances 0.000 title claims abstract description 98
- 239000003949 liquefied natural gas Substances 0.000 title description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 239000003345 natural gas Substances 0.000 claims abstract description 25
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims description 43
- 238000007599 discharging Methods 0.000 claims 3
- 239000007789 gas Substances 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 11
- 235000017491 Bambusa tulda Nutrition 0.000 description 11
- 241001330002 Bambuseae Species 0.000 description 11
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 11
- 239000011425 bamboo Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/08—Mounting arrangements for vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本发明公开了一种LNG加气机加液退枪防喷液用的安全装置，涉及加气机领域，具体包括用于加液的加液管和安装在加液管端部用于防止天然气喷出的密封筒，所述密封筒滑动安装在加液管上，加液管上焊接固定有固定筒，固定筒的侧面与套设在加液管上的第一弹簧一端固定连接，第一弹簧的另一端与密封筒的侧面固定连接，且加液管位于固定筒内的一端一体成型固定有限位环。本发明通过密封筒的结构设计，在加液的过程中，有效避免了天然气喷出到工作人员的身体上，使用安全。
The invention discloses a safety device for LNG filling machine for adding liquid and withdrawing gun for preventing liquid from spraying, which relates to the field of gas filling machines, and specifically includes a liquid filling pipe used for liquid filling and a liquid filling pipe installed at the end of the liquid filling pipe for preventing natural gas from being sprayed. The ejected sealing cylinder is slidably installed on the liquid filling pipe, and the liquid filling pipe is welded and fixed with a fixed cylinder, and the side surface of the fixed cylinder is fixedly connected with one end of the first spring sleeved on the liquid filling pipe. The other end of the spring is fixedly connected with the side surface of the sealing cylinder, and one end of the liquid filling pipe located in the fixing cylinder is integrally formed with a fixed limiting ring. Through the structural design of the sealing cylinder, the present invention effectively avoids the natural gas being sprayed onto the body of the staff during the process of adding liquid, and is safe to use.
Description
Technical Field
The invention relates to the field of gas dispensers, in particular to a safety device for preventing liquid from being sprayed out of a liquid adding gun of an LNG gas dispenser.
Background
Automobiles as transportation means emit a large amount of carbon, nitrogen, sulfur oxides, hydrocarbons, lead compounds and other various atmospheric pollutants every day, which are important sources of atmospheric pollution and bring serious harm to human health and ecological environment. Energy conservation and emission reduction are the constant subjects of the development of the automobile industry, and the work of continuously strengthening energy conservation and emission reduction becomes the urgent need for the economic realization, the good and fast development of China.
The gas filling machine is a gas filling device which supplies fuel to a natural gas automobile in a compressed natural gas mode, gas in a natural gas pipeline is generally subjected to pre-purification treatment to remove sulfur and water in the gas, then the pressure is compressed from 0.1-1.0Mpa to 25Mpa by a compressor unit, and finally the vehicle is filled with gas by a gas selling machine.
When the existing LNG dispenser is used, the liquefied natural gas can be automatically gasified under the atmospheric pressure, so that the natural gas is easily sprayed out, and safety accidents are easily caused once the natural gas is sprayed out to the surrounding environment.
Disclosure of Invention
The invention aims to provide a safety device for preventing liquid from being sprayed out of a liquid feeding and back gun of an LNG dispenser, and the safety device is used for solving the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a safety device for preventing liquid from being sprayed out of a liquid feeding gun of an LNG (liquefied Natural gas) dispenser comprises a liquid feeding pipe for feeding liquid and a sealing barrel arranged at the end part of the liquid feeding pipe and used for preventing natural gas from spraying, wherein the sealing barrel is slidably arranged on the liquid feeding pipe, a fixing barrel is fixedly welded on the liquid feeding pipe, the side surface of the fixing barrel is fixedly connected with one end of a first spring sleeved on the liquid feeding pipe, the other end of the first spring is fixedly connected with the side surface of the sealing barrel, a limiting ring is integrally formed and fixed at one end of the liquid feeding pipe positioned in the fixing barrel, the sealing barrel is prevented from sliding out of the liquid feeding pipe through the design of the limiting ring, the liquid feeding pipe is covered at a gas filling port of an automobile through the sealing barrel in the liquid feeding process, then the liquid feeding pipe is plugged into the gas filling port of the automobile along with the continuous force of a worker, a valve on the liquid feeding pipe is opened, natural gas liquid is fed, and the liquid feeding pipe is withdrawn after the liquid feeding is completed, at the moment, through the design of the sealing barrel, the natural gas is effectively prevented from being sprayed to the body of a worker, and the use is safe.
As a further scheme of the invention: the liquid filling opening that supplies the filling tube to pass is seted up to the port department of a sealed section of thick bamboo, and is fixed with integrated into one piece's sealing washer around the filling opening on the outer wall of a sealed section of thick bamboo, can effectively improve the sealed effect between a sealed section of thick bamboo and the car through the sealing washer.
As a further scheme of the invention: sealed section of thick bamboo towards one side both ends of a fixed section of thick bamboo respectively with an elastic telescopic rod's one end fixed connection, elastic telescopic rod's the other end and the side fixed connection of a fixed section of thick bamboo, elastic telescopic rod all is parallel with the liquid feeding pipe, and all is provided with the check valve on the elastic telescopic rod, makes spun natural gas all enter into a fixed section of thick bamboo through elastic telescopic rod.
As a further scheme of the invention: the inside slidable mounting of a fixed cylinder has the sliding plate, and the sliding plate cover is established on the liquid feeding pipe, the sliding plate is towards the outer one side one end of fixed cylinder and the one end fixed connection of connecting rod, the other end of connecting rod stretches out the outer side one end fixed connection with the slip ring of fixed cylinder, the slip ring slidable mounting is on the liquid feeding pipe, the outer one side other end of sliding plate orientation fixed cylinder and the one end fixed connection of connecting pipe, the other end of connecting pipe stretches out the outer side other end fixed connection with the slip ring of fixed cylinder, and the other end of connecting pipe and the one side port fixed connection of fixing the three-way valve at the slip ring opposite side, the opposite side port of three-way valve is connected with the input of recovery tank, the recovery tank is installed on the slip ring.
It should be noted that, the middle port of the three-way valve is connected with the atmosphere, in actual use, the liquid feeding pipe is inserted into the gas filling port of the automobile firstly, the middle port of the three-way valve is adjusted to be connected with the atmosphere firstly, the sliding plate is pushed to slide to the end part of the fixed cylinder facing the sealing cylinder through the sliding ring, the air in the fixed cylinder is discharged firstly, then the three-way valve is adjusted to enable the recovery tank to be communicated with the connecting pipe, the sliding plate is pushed to slide in the fixed cylinder in a reciprocating mode through the sliding ring at the moment, along with the continuous reciprocating motion of the sliding plate, the natural gas in the sealing cylinder is pumped out and extruded into the recovery tank to be stored, the effect of recovering the sprayed natural gas is achieved, and the practicability of the safety device is improved.
As a further scheme of the invention: retrieve jar threaded connection and fix on the mount, the one end fixed connection of mount and link, the other end and the slip ring fixed connection of link, the dismouting of jar is conveniently retrieved through threaded connection's mode to change retrieving the jar, after a recovery jar collection natural gas was full, it can directly be changed a new recovery jar to tear down the recovery jar.
As a further scheme of the invention: the recycling tank comprises a recycling tank body, a threaded wall is arranged on the outer wall of a tank body of the recycling tank body, the recycling tank body is fixedly connected with a fixing frame through the threaded wall, an integrally formed fixing pipe is fixed at one end, facing the three-way valve, of the recycling tank body, a connecting plate is fixedly welded and fixed at the end part of the fixing pipe, a connecting plate is rotatably installed on the outer wall of the connecting plate through a bearing, the side surface of the connecting plate is fixedly connected with one end of a second spring, the other end of the second spring is fixedly connected with the side surface of a sealing ring, an air inlet pipe is fixedly welded inside the sealing ring, the outer diameter of the air inlet pipe is the same as the inner diameter of the fixing pipe, the outer diameter of the air inlet pipe is the same as the inner diameter of a port of the three-way valve, the end part of the three-way valve can be inserted into the air inlet pipe, one end of the air inlet pipe penetrates through the connecting plate and is inserted into the fixing pipe, and the one end, positioned in the fixing pipe, is provided with a one-way valve, the other end of the recovery tank body is fixed with an air outlet pipe, and a valve is arranged on the air outlet pipe.
It should be noted that, when the jar is retrieved in the assembly, along with retrieving the threaded connection of jar body and mount, will retrieve the jar body and push the three-way valve to through the guide effect of mount, make the tip of intake pipe insert in the three-way valve, along with retrieving jar body and continue towards the three-way valve motion, the sealing washer card is in the junction of intake pipe and three-way valve, thereby has improved the leakproofness between three-way valve and the intake pipe.
Compared with the prior art, the invention has the beneficial effects that:
through the structural design of the sealing barrel, in the liquid adding process, the natural gas is effectively prevented from being sprayed to the body of a worker, and the use is safe.
Through the structural design of a fixed cylinder and a recovery tank, in the practical use, the natural gas is not only prevented from being sprayed into the atmosphere, but also the sprayed natural gas is collected, and the practicability of the safety device is improved.
The recovery tank is convenient to disassemble and assemble, so that the recovery tank can be conveniently replaced, and the full recovery tank can be conveniently collected to store.
Drawings
Fig. 1 is a schematic structural diagram of a safety device for an LNG dispenser liquid adding and gun withdrawing spray prevention liquid.
Fig. 2 is a schematic structural diagram of a safety device for an LNG dispenser liquid adding and gun withdrawing spray prevention liquid.
Fig. 3 is a cross-sectional view of the safety device for the LNG dispenser liquid adding and gun withdrawing spray prevention liquid.
Fig. 4 is a schematic structural diagram of the outside of a recovery tank in a safety device for liquid adding and gun withdrawing prevention liquid of an LNG dispenser.
Fig. 5 is a schematic structural diagram of the interior of a recovery tank in a safety device for preventing liquid from being sprayed out of a liquid feeding and spraying gun of an LNG dispenser.
As shown in the figure: the device comprises a liquid adding pipe 1, a recovery tank 2, a recovery tank body 21, a threaded wall 22, a guide angle 23, a fixed pipe 24, a connecting disc 25, an air inlet pipe 26, a sealing ring 27, a second spring 28, a connecting plate 29, an air outlet pipe 210, a fixed frame 3, a three-way valve 4, a connecting frame 5, a sliding ring 6, a connecting pipe 7, a fixed cylinder 8, an elastic hose 9, a sealing cylinder 10, a first spring 11, a connecting rod 12, a sealing ring 13, a liquid adding opening 14, a sliding plate 15 and a limiting ring 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, in the embodiment of the invention, a safety device for preventing liquid from flowing back of a liquid filling gun of an LNG dispenser comprises a liquid filling pipe 1 for filling liquid and a sealing cylinder 10 installed at the end of the liquid filling pipe 1 for preventing natural gas from spraying out, the sealing cylinder 10 is slidably installed on the liquid filling pipe 1, a fixed cylinder 8 is fixedly welded on the liquid filling pipe 1, the side surface of the fixed cylinder 8 is fixedly connected with one end of a first spring 11 sleeved on the liquid filling pipe 1, the other end of the first spring 11 is fixedly connected with the side surface of the sealing cylinder 10, a limiting ring 15 is integrally formed and fixed at one end of the liquid filling pipe 1 located in the fixed cylinder 10, the sealing cylinder 10 is prevented from sliding out of the liquid filling pipe 1 through the design of the limiting ring 15, the liquid filling pipe is covered at a gas filling port of an automobile through the sealing cylinder 10 in the liquid filling process, then the liquid filling pipe 1 is plugged into the gas filling port of the automobile with the continuous force of a worker, the valve on the liquid feeding pipe 1 is opened again, the natural gas liquid begins to be fed, after the liquid feeding is completed, the liquid feeding pipe 1 is withdrawn, and at the moment, through the design of the sealing barrel 10, the natural gas is effectively prevented from being sprayed to the body of a worker, so that the use is safe.
A liquid filling opening 14 for the liquid filling pipe 1 to pass through is formed in the port of the sealing barrel 10, an integrally formed sealing ring 13 is fixed on the outer wall of the sealing barrel 10 around the liquid filling opening 14, and the sealing effect between the sealing barrel 10 and an automobile can be effectively improved through the sealing ring 13.
Sealed section of thick bamboo 10 towards one side both ends of a fixed section of thick bamboo 8 respectively with the one end fixed connection of an elastic telescopic rod 9, the other end of elastic telescopic rod 9 and the side fixed connection of a fixed section of thick bamboo 8, elastic telescopic rod 9 all is parallel with filling pipe 1, and all is provided with the check valve on the elastic telescopic rod 9, makes spun natural gas all enter into a fixed section of thick bamboo 8 through elastic telescopic rod 9.
The inside slidable mounting of solid fixed cylinder 8 has sliding plate 15, and sliding plate 15 cover is established on liquid feeding pipe 1, sliding plate 15 is towards solid fixed cylinder 8 outside one side one end and the one end fixed connection of connecting rod 12, the other end of connecting rod 12 stretches out solid fixed cylinder 8 outside with the side one end fixed connection of slip ring 6, slip ring 6 slidable mounting is on liquid feeding pipe 1, sliding plate 15 is towards solid fixed cylinder 8 outside one side other end and the one end fixed connection of connecting pipe 7, the other end of connecting pipe 7 stretches out solid fixed cylinder 8 outside with the side other end fixed connection of slip ring 6, and the other end of connecting pipe 7 and fix one side port fixed connection at the three-way valve 4 of slip ring 6 opposite side, the opposite side port of three-way valve 4 is connected with the input of recovery tank 2, recovery tank 4 installs on slip ring 6.
It should be noted that, the middle port of the three-way valve 4 is connected with the atmosphere, in actual use, the filling pipe 1 is inserted into the gas filling port of the automobile, the middle port of the three-way valve 4 is adjusted to be connected with the atmosphere, the sliding plate 15 is pushed by the sliding ring 6 to slide to the end part of the fixed cylinder 8 facing the sealing cylinder 10, the air in the fixed cylinder 8 is discharged firstly, then the three-way valve 4 is adjusted to communicate the recovery tank 2 with the connecting pipe 7, the sliding plate 15 is pushed by the sliding ring 6 to slide in the fixed cylinder 8 in a reciprocating manner, along with the continuous reciprocating movement of the sliding plate 15, the natural gas in the sealing cylinder 10 is pumped out and extruded into the recovery tank 2 to be stored, the effect of recovering the sprayed natural gas is achieved, and the practicability of the safety device is improved.
Retrieve 2 threaded connection of jar and fix on mount 3, the one end fixed connection of mount 3 and link 5, the other end and the 6 fixed connection of slip ring of link 5, the dismouting of jar 2 is conveniently retrieved to mode through threaded connection to change retrieving jar 2, after a recovery jar 2 collects natural gas and is full, will retrieve jar 2 and tear down and directly change a new recovery jar 2 can.
The recovery tank comprises a recovery tank body 21, a threaded wall 22, a guide angle 23, a fixed pipe 24, a connecting disc 25, an air inlet pipe 26, a sealing ring 27, a second spring 28, a connecting plate 29 and an air outlet pipe 210, wherein the recovery tank 2 comprises the recovery tank body 21, the threaded wall 22 is arranged on the outer wall of the tank body of the recovery tank body 21, the recovery tank body 21 is fixedly connected with a fixed frame 3 through the threaded wall 22, the integrally formed fixed pipe 24 is fixed at one end of the recovery tank body 21 facing a three-way valve 4, the connecting disc 25 is fixedly welded at the end part of the fixed pipe 24, the connecting plate 29 is rotatably installed on the outer wall of the connecting disc 25 through a bearing, the side surface of the connecting plate 29 is fixedly connected with one end of the second spring 28, the other end of the second spring 28 is fixedly connected with the side surface of the sealing ring 27, the air inlet pipe 26 is fixedly welded inside the sealing ring 27, the outer diameter of the air inlet pipe 26 is the same as the inner diameter of the fixed pipe 24, and the outer diameter of the air inlet pipe 26 is the same as the inner diameter of the port of the three-way valve 4, the end part of the three-way valve 4 can be inserted into the air inlet pipe 26, one end of the air inlet pipe 26 penetrates through the connecting disc 25 and the connecting plate 29 and is inserted into the fixed pipe 24, the one end of the air inlet pipe 26, which is positioned in the fixed pipe 24, is provided with the one-way valve 211, the other end of the recovery tank body 21 is fixed with the air outlet pipe 210, and the air outlet pipe 210 is provided with a valve.
It should be noted that, when assembling the recovery tank 2, along with the threaded connection between the recovery tank body 21 and the fixing frame 3, the recovery tank body 21 is pushed to the three-way valve 4, and the end of the air inlet pipe 26 is inserted into the three-way valve 4 through the guiding function of the fixing frame 3, and along with the continuous movement of the recovery tank body 21 toward the three-way valve 4, the sealing ring 27 is clamped at the connection between the air inlet pipe 26 and the three-way valve 4, so that the sealing performance between the three-way valve 4 and the air inlet pipe 26 is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.
Claims (6)
1. The safety device comprises a liquid adding pipe (1) for adding liquid and a sealing barrel (10) which is arranged at the end part of the liquid adding pipe (1) and used for preventing natural gas from spraying, and is characterized in that the sealing barrel (10) is slidably arranged on the liquid adding pipe (1), a fixed barrel (8) is welded and fixed on the liquid adding pipe (1), the side surface of the fixed barrel (8) is fixedly connected with one end of a first spring (11) which is sleeved on the liquid adding pipe (1), the other end of the first spring (11) is fixedly connected with the side surface of the sealing barrel (10), and a limiting ring (15) is fixed at one end, located in the fixed barrel (10), of the liquid adding pipe (1) in an integrally formed mode.
2. The safety device for the LNG dispenser liquid adding and withdrawing gun anti-spraying liquid as claimed in claim 1, wherein a liquid adding port (14) for the liquid adding pipe (1) to pass through is formed at a port of the sealing barrel (10), and an integrally formed sealing ring (13) is fixed on the outer wall of the sealing barrel (10) around the liquid adding port (14).
3. The safety device for the LNG dispenser liquid adding and discharging gun anti-spraying liquid as claimed in claim 1, wherein two ends of one side of the sealing cylinder (10) facing the fixed cylinder (8) are respectively fixedly connected with one end of an elastic telescopic rod (9), the other end of the elastic telescopic rod (9) is fixedly connected with the side of the fixed cylinder (8), the elastic telescopic rods (9) are all parallel to the liquid adding pipe (1), and the elastic telescopic rods (9) are all provided with one-way valves.
4. The safety device for preventing the liquid from being sprayed on the LNG dispenser liquid adding and discharging gun of claim 1, wherein a sliding plate (15) is slidably installed inside the fixed cylinder (8), the sliding plate (15) is sleeved on the liquid adding pipe (1), one end of the sliding plate (15) facing the outside of the fixed cylinder (8) is fixedly connected with one end of a connecting rod (12), the other end of the connecting rod (12) extends out of the fixed cylinder (8) and is fixedly connected with one end of the side face of the sliding ring (6), the sliding ring (6) is slidably installed on the liquid adding pipe (1), the other end of the sliding plate (15) facing the outside of the fixed cylinder (8) is fixedly connected with one end of the connecting pipe (7), the other end of the connecting pipe (7) extends out of the fixed cylinder (8) and is fixedly connected with the other end of the side face of the sliding ring (6), and the other end of the connecting pipe (7) is fixedly connected with one end port of the three-way valve (4) fixed on the other side of the sliding ring (6), the other side port of the three-way valve (4) is connected with the input end of the recovery tank (2), and the recovery tank (4) is arranged on the sliding ring (6).
5. The safety device for the LNG filling and discharging gun anti-spraying liquid of the claim 4 is characterized in that the recovery tank (2) is fixed on the fixing frame (3) in a threaded connection mode, the fixing frame (3) is fixedly connected with one end of the connecting frame (5), and the other end of the connecting frame (5) is fixedly connected with the sliding ring (6).
6. The safety device for the LNG dispenser liquid adding and gun withdrawing anti-spraying liquid as claimed in claim 4, wherein the recovery tank (2) comprises a recovery tank body (21), a threaded wall (22) is arranged on the outer wall of the recovery tank body (21), the recovery tank body (21) is fixedly connected with the fixed frame (3) through the threaded wall (22), an integrally formed fixed pipe (24) is fixed at one end of the recovery tank body (21) facing the three-way valve (4), a connecting disc (25) is fixedly welded at the end of the fixed pipe (24), a connecting plate (29) is rotatably installed on the outer wall of the connecting disc (25) through a bearing, the side surface of the connecting plate (29) is fixedly connected with one end of a second spring (28), the other end of the second spring (28) is fixedly connected with the side surface of a sealing ring (27), and an air inlet pipe (26) is fixedly welded inside the sealing ring (27), the external diameter of intake pipe (26) is the same with the internal diameter of fixed pipe (24), and the external diameter of intake pipe (26) is the same with the port internal diameter of three-way valve (4), connection pad (25) and connecting plate (29) are passed and insert in fixed pipe (24) to the one end of intake pipe (26), and intake pipe (26) are located the one end of fixed pipe (24) and are provided with check valve (211), the other end of recovery tank body (21) is fixed with outlet duct (210), and be provided with the valve on outlet duct (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748976.7A CN113339694B (en) | 2021-07-02 | 2021-07-02 | A safety device for preventing liquid spraying when retracting the gun during filling of LNG gas dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110748976.7A CN113339694B (en) | 2021-07-02 | 2021-07-02 | A safety device for preventing liquid spraying when retracting the gun during filling of LNG gas dispenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113339694A true CN113339694A (en) | 2021-09-03 |
| CN113339694B CN113339694B (en) | 2025-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110748976.7A Active CN113339694B (en) | 2021-07-02 | 2021-07-02 | A safety device for preventing liquid spraying when retracting the gun during filling of LNG gas dispenser |
Country Status (1)
| Country | Link |
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| CN (1) | CN113339694B (en) |
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| CN116906813A (en) * | 2023-07-13 | 2023-10-20 | 张家港宏昌钢板有限公司 | Filling device for low-temperature liquid tank car |
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| CN113339694B (en) | 2025-04-29 |
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