KR20130104044A - Device for preventing overpass liquid gas of vaporizer - Google Patents

Abstract

PURPOSE: A device for preventing liquid gas in an LPG vaporizer from leaking is provided to cut off the outflow of liquid gas using the pressure difference between the top and bottom of a float. CONSTITUTION: A device (A) for preventing liquid gas in an LPG vaporizer from leaking comprises a chamber (10), a guide (20), and a float (30). A gas inlet pipe (11) is formed on the bottom end of the chamber, and a gas supply pipe (12) formed on the top end. The guide is vertically installed to be separated from the inner surface and bottom of the chamber, and a liquid gas inlet (22) and a gas inlet (21) are formed thereon. The guide guides the flow of gas received in the chamber and the float. The float reduces the amount of gas flowing into the guide by blocking the gas inlet and cuts off the outflow of liquid gas.

Description

Device for preventing overpass liquid gas of vaporizer

The present invention relates to a liquid gas outflow prevention device of the LPG vaporizer, and more particularly, to the installation of the LPG vaporizer to block the supply of the ungassed liquid gas to the outlet installed in the vaporized gas gas discharged from the vaporizer It relates to a liquid gas outflow prevention device.

Since LPG has a very large volume ratio of gas and liquid, it is liquefied through pressurization to improve transportation and storage efficiency.

Therefore, in order to use LPG, a vaporizer which forcibly vaporizes liquefied gas is required.

On the other hand, during the supply of liquefied LPG to the carburetor while the LPG is not vaporized due to a power outage or failure of the carburetor is supplied in the liquid state can be very dangerous situation.

That is, in case of LPG, the volume expands 250 times when it is vaporized from the liquid state, so when the gas in the liquid state enters the low pressure part through the pressure regulator, it naturally vaporizes and breaks the device while breaking the safety pressure range of the low pressure part. Overheating or explosions can result in dangerous situations.

For this reason, the liquid gas outflow prevention device must be installed in the construction conditions of the vaporizer.

On the other hand, some of the liquid gas outflow prevention apparatus installed in a vaporizer used float.

At this time, the LPG has a problem that the specific float is very low and the pressure is very high that a general float cannot be used.

Therefore, in the conventional liquid gas outflow prevention device (A '), as shown in FIG. 8, a large float 30' is used as compared to a general float, which is high in strength to withstand the high pressure of LPG.

As the float is enlarged as described above, the guide for accommodating the float is also forced to be enlarged, and thus there is a problem in that the manufacture of the vaporizer is difficult.

In addition, as the float becomes larger, it is necessary to install a shut-off device using a separate connecting rod on the float. Since the connecting device is unstable and fixed, a trouble such as a deformation occurs in the connecting device during the transportation and installation of the carburetor may cause a dangerous situation. There was a problem caused.

The present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide a liquid gas outflow prevention device of an LPG vaporizer that can effectively block the supply of the unvaporized liquid gas from the vaporizer to the place of use.

Liquid gas outflow prevention device of the LPG vaporizer according to the present invention for achieving the above object,

A gas inlet pipe leading from the vaporizer at the bottom is provided, a gas supply pipe leading to the outside at the top is provided, and a chamber for receiving gas discharged from the vaporizer;

Vertically fixed and spaced apart from the inner circumferential surface and the bottom of the chamber, a liquid gas inlet is provided around the lower end, a gas gas inlet is provided around a height slightly higher than the top of the float, the flow of gas and float contained in the chamber A guide to guide you;

The pressure of the upper part of the guide lowering the pressure by lowering the amount of gas flowing into the guide by blocking the gas gas inlet of the guide by rising higher than the gas gas inlet of the guide by buoyancy due to the inflow of liquid gas into the chamber in the guide. It includes a float for fast and strong rise even if no more liquid gas flows due to the pressure difference in the lower portion of the guide to be relatively high pressure and close to the gas blocking O-ring provided in the upper guide to block the outflow of liquid gas,

The chamber is provided with an on-off valve to extend the tip of the gas inlet pipe to the guide side, and to discharge the oil and foreign substances introduced into the chamber to one side of the lower end adjacent to the extended gas inlet pipe;

When the top of the float rises higher than the gas gas inlet of the guide, the inner diameter of the upper end is 1 mm larger than the outer diameter of the float so as to minimize the inflow of gas into the guide. The guide prevents the operation of the float due to oil adhesion. The inner diameter of the lower part is larger than that of the upper part,

The float is characterized in that it is made of foam rubber to reduce the weight and improve the adhesion.

Here, a gas blocking O-ring is provided at the upper end of the guide to block the flow of the gas by contact with the raised float, and a protrusion protruding upward to smoothly flow the liquid gas into the lower portion of the bottom is provided. It is characterized by.

In addition, the float is characterized in that the specific gravity is made of nitrile rubber having a specific gravity of 0.28-0.32 so that buoyancy can be formed even in a low density liquid gas.

The liquid gas outflow prevention device of the LPG vaporizer according to the present invention, since the float is made of foam rubber can not only reduce the weight and size of the float, but also due to the nature of the material in close contact with the blocking portion of the gas supply pipe, the float itself acts as a blocking sheet It is possible to improve the blocking efficiency through the operation of the accurate float can be made.

In addition, the liquid gas outflow prevention device of the LPG vaporizer according to the present invention, unlike the ordinary float is operated only by the buoyancy of the liquid, liquid gas only raises the float higher than the gas gas inlet of the guide thereafter the liquid gas Since the float is operated by the pressure difference formed in the upper and lower ends of the float in the guide without the need for buoyancy, there is an effect that can more accurately block the outflow of liquid gas.

And the liquid gas outflow prevention device of the LPG vaporizer according to the present invention, the front end of the gas inlet pipe connected to the chamber is extended to the guide side, the opening and closing valve is provided at the lower end of the chamber adjacent to the extended gas inlet pipe end, the extension By opening the on-off valve by collecting the unvaporized oil and foreign matter through the space between the gas inlet pipe and the chamber, the oil and foreign matter contained in the gas can be easily removed. There is an effect that can be made.

1 is a cross-sectional view for explaining the structure of the liquid gas outflow prevention device of the LPG vaporizer according to the present invention
Figure 2 is a state of use of the liquid gas outflow prevention device of the LPG vaporizer according to the present invention
Figure 3 is an exemplary view showing the normal discharge of gas gas in the liquid gas outflow prevention device of the LPG vaporizer according to the present invention
Figure 4 is an exemplary view showing the initial state of the liquid gas inlet through the gas inlet pipe in the liquid gas outflow prevention device of the LPG vaporizer according to the present invention
5 is an exemplary view showing a state in which the float blocked the gas gas inlet of the guide by the inflow of liquid gas in the liquid gas outflow prevention device of the LPG vaporizer according to the present invention.
6 is an exemplary view showing that the float blocked the liquid gas outflow by the differential pressure even if the liquid gas outflow prevention device of the LPG vaporizer according to the present invention does not increase.
Figure 7 is an operating state diagram for explaining the removal of oil and foreign matter through the on-off valve in the liquid gas outflow prevention device of the LPG vaporizer according to the present invention
8 is a cross-sectional view showing a schematic structure of a liquid gas outflow prevention device using a conventional float

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the liquid gas outflow prevention device A of the LPG vaporizer according to the present invention includes a chamber 10, a guide 20, and a float 30.

The chamber 10 is provided with a gas inlet pipe 11 leading from the vaporizer 100 at the lower end, provided with a gas supply pipe 12 leading to the outside at the top, and accommodates the gas discharged from the vaporizer 100. .

In the chamber 10, the tip of the gas inlet pipe 11 may further extend toward the guide 20 in the chamber 10.

The space between the outer surface of the tip of the gas inlet pipe 11 extended by the tip of the gas inlet pipe 11 further extending toward the guide 20 inside the chamber 10 and the inner surface of the bottom of the chamber 10 in the chamber 10. Since this is provided, it is possible to collect the oil and foreign substances introduced into the chamber 10 through a space provided between the outer surface of the extended gas inlet pipe 11 tip and the inner surface of the lower chamber 10.

And it is preferable that the opening and closing valve 13 is provided on one side of the lower end of the chamber (10).

Oil is collected in the space between the outer surface of the tip of the gas inlet pipe 11 extending through the opening of the opening / closing valve 13 and the inner surface of the lower chamber 10 by providing the opening / closing valve 13 at one lower side of the chamber 10. And foreign substances can be discharged.

And the upper end of the chamber 10 is preferably provided with a fixing member 14 for supporting the gas supply pipe 12 and the guide 20.

The fixing member 14 supporting the gas supply pipe 12 and the guide 20 is provided at the upper end of the chamber 10 so that the gas supply pipe 12 and the guide 20 can be fixed on the chamber 10. do.

At this time, it is preferable that the sealing member 15 is provided in the coupling portion of the chamber 10 and the fixing member 14.

Since the sealing member 15 is provided at the coupling portion of the chamber 10 and the fixing member 14, airtightness may be maintained at the coupling portion of the chamber 10 and the fixing member 14 through the sealing member 15.

Meanwhile, as shown in FIG. 2, the vaporizer 100 to which the gas inlet pipe 11 connected to the bottom of the chamber 10 is connected is a heat exchanger tube that serves as a path of the liquid gas to the outside of the heater 110 like the general vaporizer. Of course, 120 is provided.

The guide 20 is fixedly installed vertically spaced apart from the inner circumferential surface and the bottom of the chamber 10, the liquid gas inlet 21 is provided around the lower end, around the height slightly higher than the top of the float 30 A gas gas inlet 22 is provided to guide the flow of the gas and float 30 contained in the chamber 10.

The inner diameter of the upper end of the guide 20 is 1 mm larger than the outer diameter of the float 30, and the lower inner diameter is preferably larger than the inner diameter of the upper end.

Since the inner diameter of the upper end of the guide 20 is 1 mm larger than the outer diameter of the float 30 and the lower inner diameter is larger than the inner diameter of the upper part, the upper end of the float 30 rising by the liquid gas inflow is larger than the gas gas inlet 22. When it is high, the amount of gas supplied through the gas gas inlet 22 of the guide 20 is minimized so that the pressure of the upper portion of the float 30 is drastically lowered, and the pressure of the lower portion of the float 30 is maintained as it is. High pressure at the bottom of the float 30 is strongly pushed up the float 30 even if it does not flow in close contact with the gas blocking O-ring 17 of the upper portion of the guide 20 to block the gas, the lower portion of the guide 20 The oil is adhered between the inner surface and the outer surface of the float 30 to prevent the interference of the operation of the float 30.

And it is preferable that the protrusion 23 protruding upward is provided in the center of the bottom surface of the guide 20.

Protrusions 23 protruding upward in the center of the bottom surface of the guide 20 are provided so that a space can be secured between the bottom surface of the float 30 and the bottom surface of the guide 20 so that the bottom surface of the float 30 and the guide 20 can be secured. Since the liquid gas can be smoothly introduced between the bottom surfaces of), the lifting and lowering of the float 30 can be smoothly performed according to the liquid gas inflow into the guide 20.

On the other hand, a gas blocking O-ring 17 is installed at the upper end of the guide 20 to contact the raised float 30 to block the flow of gas.

The gas blocking O-ring 17 is installed to contact the float 30 that rises on the top of the guide 20 to block the flow of gas. Thus, the gas is discharged through the gas blocking O-ring 17 and the float 30. Completely blocked.

The float 30 rises higher than the gas gas inlet 22 of the guide 20 by buoyancy due to the inflow of the liquid gas into the chamber 10 in the guide 20, so that the gas gas inlet of the guide 20 is increased. As the amount of gas introduced into the guide 20 is reduced by blocking the 22, the liquid gas is no longer caused by the pressure difference in the lower part of the guide 20 which becomes relatively high pressure and the pressure in the upper part of the guide 20 which is lowered in pressure. Even if it does not flow is to rise quickly and strongly close to the gas blocking O-ring 17 provided on the guide 20 to block the outflow of the liquid gas.

Such a float 30 is preferably made of foam rubber.

Since the float 30 is made of foam rubber, the float 30 can be lightened and downsized, and the surface of the float 30 is receded according to the properties of the material. Close contact with the blocking o-ring 17 allows the float 30 itself to act as a blocking sheet.

At this time, the float 30 is preferably made of nitrile rubber having a specific gravity of 0.28-0.32.

Since the float 30 is made of nitrile rubber having a specific gravity of 0.28-0.32, not only the molding can be easily performed, but also buoyancy can be formed even in a low density liquid gas, so that the float 30 can be smoothly raised and lowered.

Referring to the liquid gas outflow prevention through the liquid gas outflow prevention device (A) of the LPG vaporizer according to the present invention as described above in detail as follows.

The liquid gas introduced into the vaporizer 100 in a state in which the vaporizer 100 is normally operated is vaporized by heating in the process of running along the heat exchange tube 120 surrounding the heater 110 to be provided at the bottom of the chamber 10. Through the gas inlet pipe 11 is introduced into the chamber 10 in a gaseous gas state.

At this time, the bottom surface of the guide 20 in the chamber 10 is blocked so that the gas gas rises along the space between the outer surface of the guide 20 and the inner surface of the chamber 10, as shown in FIG. Inflow into the guide 20 through the gas gas inlet 22 provided around the height of the float 30 slightly higher than the top of the float 30 is discharged to the outside through the gas supply pipe 12 located above the guide 20 Is supplied.

Here, a part of the gas gas flowing into the chamber 10 and rising along the space between the outer surface of the guide 20 and the inner surface of the chamber 10 is guided through the liquid gas inlet 21 provided around the lower end of the guide 20. 20) may flow into the outside through the gas supply pipe 12 positioned above the guide 20, but the float 30 is located inside the guide 20 adjacent to the liquid gas inlet 21 Since the amount of gas gas that may be introduced through the liquid gas inlet 21 may be insignificant, the main path through which the gas gas flows into the guide 20 may be referred to as the gas gas inlet 22.

However, when the vaporizer 100 is inoperative or malfunctions, the liquid gas introduced into the vaporizer 100 is not vaporized, as shown in FIG. 4, through the gas inlet pipe 11 provided at the bottom of the chamber 10. It is introduced into the chamber 10.

At this time, the liquid gas introduced into the chamber 10 is raised to the liquid level, so as to reach the liquid gas inlet 21 provided around the lower end of the guide 20 as shown in FIG. The float 30 located in the guide 20 is pushed up.

Here, the protrusion 23 is provided at the center of the bottom of the guide 20, so that a space is secured between the bottom of the float 30 and the bottom of the guide 20 so that the liquid gas introduced into the guide 20 is floated ( 30) It can be introduced to the bottom surface to smoothly push up the float 30.

At this time, the inner diameter of the upper end of the guide 20 is 1mm larger than the outer diameter of the float 30 and smaller than the inner diameter of the lower end, so that the float 30 is close between the inner surface of the upper end of the guide 20 and the outer surface of the float 30. As the liquid level of liquid gas rises and the upper end thereof is higher than the gas gas inlet 22 of the guide 20, the gas gas inflow into the guide 20 as compared with the amount of gas gas discharged through the gas supply pipe 12. Since the upper portion of the float 30 becomes low pressure and the lower portion of the float 30 becomes relatively high pressure, the float 30 in the elevated state due to the pressure difference inside the guide 20 is reduced. As described above, even if there is no inflow of liquid gas, the gas is further raised and close to the gas blocking O-ring 17, thereby preventing the opening of the gas supply pipe 12.

Therefore, as the float 30 is raised and lowered in the guide 20, it is possible to block the outflow of the liquid gas through the gas supply pipe 12.

On the other hand, the liquid gas outflow prevention device (A) of the LPG vaporizer according to the present invention is not only to prevent the outflow of the liquid gas through the operation of the float 30 as described above, but also introduced into the chamber 10 Oil and foreign substances can be easily discharged.

The oil and foreign matter discharge in the chamber 10 through the present invention will be described in detail as follows.

LPG contains a portion of oil, pentane and other debris that do not evaporate well.

In the present invention, the tip of the gas inlet pipe 11 connected to the chamber 10 extends toward the guide 20, and the outer surface of the tip of the gas inlet pipe 11 located in the chamber 10 and the inner surface of the chamber 10. Space is secured in between.

At this time, the space secured between the outer surface of the front end of the gas inlet pipe 11 located in the chamber 10 and the inner surface of the chamber 10 collects oil and foreign substances introduced into the chamber 10.

In the present invention, one side of the lower end of the chamber 10 is provided with an opening / closing valve 13, as shown in FIG. 7, the outer surface of the tip of the gas inlet pipe 11 located in the chamber 10 and the chamber 10. When opening and closing the valve 13 in the state of the oil and foreign matter gathered in the space between the inner surface of the collected oil and foreign matter can be discharged to the outside of the vaporizer 100 can maintain the purity of the gas.

As such, the oil and foreign substances accumulated in the heat exchanger tube 120 are supplied together with the gaseous gas by easily discharging the oil and foreign substances in the chamber 10 to the outside through the opening and closing of the valve 13 to temporarily float the float 30. This can solve the problem of shutting off the normal gas supply.

As described above, the liquid gas outflow prevention device (A) of the LPG vaporizer according to the present invention is that the float 30 is made of foamed rubber, and the float 30 can be lightened and downsized as well as gas shut off due to the characteristics of the material. Since the float 30 itself can be in close contact with the molten ore ring 17, the float 30 itself can act as a blocking sheet, so that the efficiency of the liquid gas outflow blocking can be improved. Otherwise, if the liquid gas raises the float 30 higher than the gas gas inlet 22 of the guide 20, the pressure formed at the upper and lower ends of the float 30 in the guide 20 thereafter without the need for buoyancy of the liquid gas. Due to the difference, the float 30 operates upwardly to more accurately block the outflow of the liquid gas, and the tip of the gas inlet pipe 11 extends to the guide 20 side, and the extended gas oil Opening and closing valve 13 is provided at the bottom of the chamber 10 adjacent to the end of the pipe (11) bar, the oil and foreign matter through the space between the extended gas inlet pipe (11) and the chamber 10 regularly open and close Opening the valve 13 has the effect of simply removing the oil and foreign matter from the chamber 10.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

10 chamber 11 gas inlet pipe
12 gas supply pipe 13 on-off valve
14: fixing member 15: sealing member
17: O-ring for gas blocking 20: Guide
21: liquid gas inlet 22: gas gas inlet
23: projection 30, 30 ': float
100: carburetor 110: heater
120: heat exchanger tube A, A ': liquid gas outflow prevention device

Claims (3)

A gas inlet pipe leading from the vaporizer at the bottom is provided, and a gas supply pipe leading to the outside at the top is provided, the chamber containing gas discharged from the vaporizer;
Vertically fixed and spaced apart from the inner circumferential surface and the bottom of the chamber, a liquid gas inlet is provided around the lower end, a gas gas inlet is provided around a height slightly higher than the top of the float, the flow of gas and float contained in the chamber A guide to guide you;
The pressure of the upper part of the guide lowering the pressure by lowering the amount of gas flowing into the guide by blocking the gas gas inlet of the guide by rising higher than the gas gas inlet of the guide by buoyancy due to the inflow of liquid gas into the chamber in the guide. It includes a float for fast and strong rise even if no more liquid gas flows due to the pressure difference in the lower portion of the guide to be relatively high pressure and close to the gas blocking O-ring provided in the upper guide to block the outflow of liquid gas,
The chamber is provided with an on-off valve to extend the tip of the gas inlet pipe to the guide side, and to discharge the oil and foreign matter collected in the chamber to the outside on one side of the lower end adjacent to the extended gas inlet pipe;
When the top of the float rises higher than the gas gas inlet of the guide, the inner diameter of the upper end is 1 mm larger than the outer diameter of the float so as to minimize the inflow of gas into the guide. The guide prevents the operation of the float due to oil adhesion. The inner diameter of the lower part is larger than that of the upper part,
The float is a liquid gas outflow prevention device of the LPG vaporizer, characterized in that the foam to reduce the weight and improve the adhesion. The method of claim 1,
The guide is provided with a gas blocking O-ring contacting the float raised at the top, the liquid gas of the LPG vaporizer, characterized in that the projection protrudes to the top so that the liquid gas flows smoothly to the bottom of the float bottom Spill Prevention Device. The method of claim 1,
The float is a liquid gas outflow prevention device of the LPG vaporizer, characterized in that the specific gravity is 0.28-0.32 nitrile rubber so that buoyancy can be formed even in low density liquid gas.

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