CN215831659U - Self-floating exhaust safety valve device for liquefied gas transportation storage tank - Google Patents
Self-floating exhaust safety valve device for liquefied gas transportation storage tank Download PDFInfo
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- CN215831659U CN215831659U CN202122350890.7U CN202122350890U CN215831659U CN 215831659 U CN215831659 U CN 215831659U CN 202122350890 U CN202122350890 U CN 202122350890U CN 215831659 U CN215831659 U CN 215831659U
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Abstract
The utility model relates to a self-floating exhaust safety valve device for a liquefied gas transportation storage tank, which comprises a safety valve arranged at the top of the liquefied gas storage tank, wherein the safety valve is connected with a hose, the hose is positioned in the liquefied gas storage tank, the other end of the hose is connected with a self-floating piece, the self-floating piece floats on the surface of a liquid medium in the liquefied gas storage tank, the top of the self-floating piece is connected with an air inlet pipe, and the air inlet pipe is positioned in the gas medium in the liquefied gas storage tank. The utility model provides a medium leading-in device at the inlet of a safety valve, aiming at the problem that the safety valve on a liquefied gas storage tank is easy to spray liquid after a transport vehicle turns over, so that gas always enters the inlet of the safety valve when the transport vehicle turns over and discharges pressure, and the medium discharge is greatly reduced.
Description
Technical Field
The utility model relates to the technical field of liquefied gas storage tank safety relief valves, in particular to a self-floating type exhaust relief valve device for a liquefied gas transportation storage tank.
Background
The liquefied gas carrier vehicle is mainly composed of vehicle head, vehicle chassis and tank body, and the medium transported by the vehicle is gas at normal temperature and pressure, and is transported in liquid state due to a certain pressure in the tank body. During transportation, the tank body cannot be filled with liquid, a part of space is reserved above the tank body, and the medium is in a gaseous state. When the liquefied gas carrier vehicle encounters a fire or the tank body is in cold insulation failure, the temperature of a medium in the tank body can be increased, part of liquid is vaporized, the pressure is increased, and explosion can be generated if the pressure is not released timely. The safety valve is a safety relief device used for protecting the tank body of the liquefied gas transport vehicle and preventing the tank body from exceeding the set pressure.
The existing safety valve is upwards installed at the top of the tank body, and a medium leading-in device is not arranged at the inlet of the safety valve. When the tank body is normally transported, due to the action of gravity, the liquid medium is below, the gas medium is above, the gas is in contact with the safety valve, and the liquid is not in contact with the safety valve. When the pressure exceeds a set value, the safety valve bounces, the discharge channel is opened, the gas is discharged from the safety valve, and the pressure in the tank body is reduced due to the fact that part of the gas is discharged, so that the pressure relief process is achieved.
However, when the tank truck has accident side-tipping, the safety valve turns over along with the tank body and can be positioned at the middle position or at the lowest position. At this time, the gas part is still at the highest position in the tank, the gas is not in contact with the safety valve, and the gas is in contact with the safety valve and is liquid. If the accident scene is accompanied by a fire or the vehicle cannot be timely treated for a long time, the temperature and the pressure in the tank body are raised, the safety valve bounces, and the pressure of the discharged medium is reduced. Instead of gas, liquid is now discharged. The liquid density is much higher than the gas density, so the same volume of liquid is discharged than the same volume of gas, the discharged medium is much more, a large amount of medium is discharged, the pollution to the environment is more serious, and the harm to surrounding people and facilities is larger. And most of the media are inflammable and explosive media, and after a large amount of the media are discharged, if the concentration reaches the explosion limit concentration, the media are easy to explode, so that the media are very dangerous. The leaked medium cannot be recycled, and great economic loss is caused.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides a self-floating type exhaust safety valve device for a liquefied gas transportation storage tank.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a self-floating type exhaust safety valve device for a liquefied gas transportation storage tank comprises a safety valve arranged at the top of the liquefied gas storage tank, wherein the safety valve is connected with a hose, the hose is positioned inside the liquefied gas storage tank, the other end of the hose is connected with a self-floating piece, the self-floating piece floats on the surface of a liquid medium in the liquefied gas storage tank, the top of the self-floating piece is connected with an air inlet pipe, and the air inlet pipe is positioned in the gas medium in the liquefied gas storage tank.
The self-floating piece is of an inverted cone structure with a wide upper part and a narrow lower part and a hollow inner part.
The air inlet pipe is a T-shaped structure consisting of a top pipe and a connecting pipe, the connecting pipe penetrates through the inner cavity of the self-floating piece and is communicated with the hose, and air inlets are formed in two ends of the top pipe.
The top pipe is of an arc structure with the middle part protruding upwards.
And a sealing ring is arranged between the outer wall of the connecting pipe of the air inlet pipe and the through hole of the self-floating piece.
The hose and the self-floating piece are detachably connected through threads, and a sealing ring is arranged at the joint of the hose at the bottom in the self-floating piece.
The utility model has the beneficial effects that: the utility model provides a medium leading-in device at the inlet of a safety valve, aiming at the problem that the safety valve on a liquefied gas storage tank is easy to spray liquid after a transport vehicle turns over, so that gas always enters the inlet of the safety valve when the transport vehicle turns over and discharges pressure, and the medium discharge is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1-liquefied gas storage tank; 2-safety valve; 3-a hose; 4-a self-floating piece; 5, an air inlet pipe; 5.1-pipe jacking; 5.2-connecting pipe;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, the self-floating exhaust safety valve device for the liquefied gas transportation storage tank comprises a safety valve 2 arranged at the top of a liquefied gas storage tank 1, wherein a hose 3 is connected with the safety valve 2, the hose 3 is positioned inside the liquefied gas storage tank 1, a self-floating piece 4 is connected with the other end of the hose 3, the self-floating piece 4 floats on the surface of a liquid medium in the liquefied gas storage tank 1, an air inlet pipe 5 is connected with the top of the self-floating piece 4, and the air inlet pipe 5 is positioned in the gas medium in the liquefied gas storage tank 1.
The self-floating piece 4 is of an inverted cone structure with a wide upper part and a narrow lower part and a hollow inner part.
Of course, the self-floating member 4 is in an inverted cone structure, and the structure of the self-floating member 4 is not limited to this form, as long as it can be ensured that it floats on the surface of the liquid medium.
The air inlet pipe 5 is a T-shaped structure consisting of a top pipe 5.1 and a connecting pipe 5.2, the connecting pipe 5.2 penetrates through the inner cavity of the self-floating piece 4 to be communicated with the hose 3, and air inlets are formed in two ends of the top pipe 5.1.
The air inlet pipe 5 is of a T-shaped structure, so that the air inlet is prevented from abutting against the top of the inner wall of the liquefied gas storage tank 1 and losing the air inlet function, the exhaust effect cannot be achieved, and the safety valve 2 is made to fail.
Of course, the T-shaped structure of the intake pipe 5 is also only an example, and may be any structure as long as the purpose of smooth intake is achieved.
The top pipe 5.1 is of an arc structure with the middle protruding upwards. The top pipe 5.1 is of an arc-shaped structure, and two ends of the top pipe are bent downwards, so that liquid can be effectively prevented from splashing into the interior.
And a sealing ring is arranged between the outer wall of the connecting pipe 5.2 of the air inlet pipe 5 and the perforating hole of the self-floating piece 4.
The hose 3 can be dismantled through the screw thread and be connected between 4 from floating, just the bottom is equipped with the sealing washer in the junction of hose 3 in 4 from floating.
The gas part inside the liquefied gas storage tank 1 of the present invention is in contact with the inlet of the safety valve 2 through the gas inlet pipe 5 and the hose 3. When the pressure in the liquefied gas tank 1 exceeds a predetermined value, the safety valve 2 is popped up, and gas enters from the end of the top pipe 5.1 of the gas inlet pipe 5, passes through the hose 3, and is discharged to the outside of the liquefied gas tank 1 through the safety valve 2. When the liquefied gas transport vehicle turns over, the position of the self-floating piece 4 changes along with the rotation of the liquid level, so that the air inlet of the air inlet pipe 5 is always in the air position, and the discharged media are all air.
The utility model has been described in connection with the accompanying drawings, it is to be understood that the utility model is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the utility model, and all such modifications and variations are within the scope of the utility model.
Claims (6)
1. The utility model provides a liquefied gas transportation storage tank is with from floating exhaust relief valve device, its characterized in that, including setting up relief valve (2) at liquefied gas storage tank (1) top, relief valve (2) even have hose (3), hose (3) are located liquefied gas storage tank (1) inside, the other one end of hose (3) is connected with from floating piece (4), float on liquefied gas storage tank (1) interior liquid medium's surface from floating piece (4), be connected with intake pipe (5) from floating piece (4) top, intake pipe (5) are located liquefied gas storage tank (1) interior gas medium.
2. The self-floating exhaust safety valve device for liquefied gas transport storage tanks according to claim 1, wherein the self-floating member (4) is an inverted cone structure with a wide top and a narrow bottom and a hollow interior.
3. The self-floating exhaust safety valve device for the liquefied gas transport storage tank according to claim 2, wherein the gas inlet pipe (5) is a T-shaped structure consisting of a top pipe (5.1) and a connecting pipe (5.2), the connecting pipe (5.2) passes through an inner cavity of the self-floating member (4) and is communicated with the hose (3), and both ends of the top pipe (5.1) are provided with gas inlets.
4. The self-floating exhaust safety valve device for liquefied gas transport tanks according to claim 3, wherein the top pipe (5.1) is of an arc structure with an upward convex middle part.
5. Self-floating exhaust safety valve device for liquefied gas transport tanks according to claim 4, characterized in that a sealing ring is provided between the outer wall of the connecting pipe (5.2) of the inlet pipe (5) and the through hole of the self-floating member (4).
6. The self-floating exhaust safety valve device for liquefied gas transport storage tanks according to claim 5, wherein the hose (3) is detachably connected with the self-floating member (4) through threads, and the inner bottom of the self-floating member (4) is provided with a sealing ring at the joint of the hose (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122350890.7U CN215831659U (en) | 2021-09-27 | 2021-09-27 | Self-floating exhaust safety valve device for liquefied gas transportation storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122350890.7U CN215831659U (en) | 2021-09-27 | 2021-09-27 | Self-floating exhaust safety valve device for liquefied gas transportation storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215831659U true CN215831659U (en) | 2022-02-15 |
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ID=80201338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122350890.7U Active CN215831659U (en) | 2021-09-27 | 2021-09-27 | Self-floating exhaust safety valve device for liquefied gas transportation storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215831659U (en) |
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2021
- 2021-09-27 CN CN202122350890.7U patent/CN215831659U/en active Active
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