KR100897567B1 - Mechanical phase separator of cryogenic liquefied gas - Google Patents

Abstract

The present invention relates to a mechanical gas-liquid separator of cryogenic liquefied gas, to enable the level control and pressure maintenance of the liquid using only a simple mechanical device without using any electrical device.

To this end, the present invention is installed in the cryogenic liquefied gas inlet and the cryogenic liquefied gas suction unit for sucking the liquefied gas into the inner container through the suction pipe when the pressure of the inner container is lowered below the set pressure of the suction pressure regulator; It is installed on the upper side of the inner container of the gas-liquid separator, and the liquid level control unit for opening and closing the gas discharge valve according to the liquid level inside the inner container to adjust the liquid level in the inner container, and the upper portion of the inner container of the gas-liquid separator. Mechanical gas-liquid separator of cryogenic liquefied gas including pressure holding part to maintain the internal pressure of the inner container by the set pressure by the after pressure regulator, which is low in installation cost, convenient in operation and maintenance, and has a semi-permanent life. Allow to extend.

Cryogenic Liquefied Gas, Mechanical, Gas-Liquid Separation

Description

Mechanical gas-liquid separator of cryogenic liquefied gas {MECHANICAL PHASE SEPARATOR OF CRYOGENIC LIQUEFIED GAS}

The present invention relates to a mechanical gas-liquid separator of cryogenic liquefied gas for gas-liquid separation of cryogenic liquefied gas to supply the equipment to the equipment stably. More specifically, it separates the gas generated during cryogenic liquefied gas transfer to the outside and discharges only liquid It relates to a mechanical gas-liquid separator of cryogenic liquefied gas that is operated only by a purely mechanical device without an electrical device used in the gas-liquid separator supplied to the equipment.

In particular, the present invention relates to a mechanical gas-liquid separator of cryogenic liquefied gas to solve the problems of the conventional electronic gas-liquid separator by controlling the level and pressure of the liquefied gas by using a simple mechanical device such as a float and a gas discharge valve. It is about.

Cryogenic liquefied gas is liquefied at less than -150 ^° C, it has a characteristic that is easily vaporized by a small amount of heat intrusion because of the latent heat is small. Therefore, the cryogenic liquefied gas storage tank is maintained at about 3 ~ 8 barg, and a vacuum insulated pipe having excellent thermal insulation performance or a corresponding pipe is used to supply liquefied gas to equipment far from the tank. In this case, if the length of the pipe becomes longer, the heat infiltration amount also increases in proportion to the length, and since the pressure loss caused by the friction of the pipe or the head difference due to the height cannot be eliminated, inevitably gas is generated during the transfer of the cryogenic liquefied gas. .

Most of the equipment that uses the cryogenic cold of the cryogenic liquefied gas uses a high-density pure liquid. For this purpose, a gas-liquid separator is installed at the end of the pipe or at the front of the equipment to separate the gas and discharge it to the outside. Or supply a saturated liquid of constant pressure to the equipment. The performance of gas-liquid separators is very important because most production equipments must be supplied with a constant pressure and flow rate of liquid to prevent product defects.

Conventional gas-liquid separator uses an electric control method to maintain a constant level and internal pressure of the liquid in the inside of the container, and by using an electrical device such as a level sensor, pressure switch, solenoid valve, etc. Maintain supply pressure.

That is, in the conventional electronic gas-liquid separator, when liquefied gas in which liquid and gas coexist is introduced into the inner container, the gas is discharged to the outside and the liquid is stored in the inner container, and the level is detected by an electrical signal to maintain the liquid level. Level sensors such as capacitive, resistive, and thermistor are used, and the height of the liquid level is usually controlled by using a contact point indicating the reference height of HH, H, L, and LL.

When the gas-liquid separator is operating normally, the liquid level is controlled to remain between H and L, HH indicates that the liquid is overfilled, and LL indicates that the liquid level is low and can be exhausted, in which case an emergency The control is activated to sound an alarm or to drive safely.

Then, when the liquid level in the equipment drops below L, the filling valve in front of the suction pipe opens, liquefied gas enters the gas-liquid separator, and the gas is discharged to the outside through the discharge port, and the liquid accumulates in the inner container. .

When the liquid level increases and the liquid level reaches H, the filling valve closes. In general, the pressure of the inlet pipe is almost the same as that of the storage tank. Therefore, the liquid and gas are entangled as the high pressure liquefied gas is sucked into the atmospheric or low pressure container. The flow is bad. This flow of the liquid prevents the level sensor from detecting the H point and the liquid reaches the HH point. In some cases, the liquid is discharged through the gas outlet due to a malfunction.

In order to reduce this flow, some gas-liquid separators use scattering plates, which are not very effective. In some gas-liquid separators, spray nozzles or meshes are installed in suction pipes or in inlet pipes. Although expensive control valves may be used, it is difficult to completely eliminate the above malfunction problem.

On the other hand, the conventional gas-liquid separator operated at atmospheric pressure immediately changes the pressure of the inner container when the filling valve is opened and closed. In the equipment sensitive to the supply pressure, such as a device for manufacturing a light bulb, a serious problem occurs in the product. Let's do it. In addition, since the electronic gas-liquid separator operating at atmospheric pressure has to supply liquid by gravity, there is a limitation in the installation space that needs to be installed at a high place such as a ceiling, so it is impossible to use it at a low ceiling, and it is expensive to install and maintain. It is also difficult to manage.

On the other hand, gas-liquid separators operating at pressures above atmospheric pressure use electrically operated pressure switches and solenoid valves to maintain pressure changes at about 1 bar. However, such gas-liquid separator is a problem in the durability of the pressure switch due to the complicated pipe configuration and frequent opening and closing. In order to improve this, a method using a pressure transmitter and a pressure regulator may be installed in the suction pipe and the gas discharge pipe. In the latter case, the flow rate of the pressure regulator is small, which causes a problem of depletion of the liquid when the liquid is excessively used.

On the other hand, the conventional electronic gas-liquid separator uses a low-cost solenoid valve for low cost as a filling valve, the frequency of failure due to frequent wear and tear of the seal portion or inflow of foreign matter. In order to improve this, using a cryogenic control valve is expensive and causes a problem that the overall manufacturing cost is excessively increased.

In addition, electronic devices are generally complicated in structure and poor in durability, and thus have a high possibility of failure, and liquids and gases are entangled and sucked into the inner container, which makes it difficult to accurately detect the height of the liquid surface.

The present invention has been made in order to improve the above problems, the present invention is an ultra-low temperature that can automatically adjust the liquid level using only a simple mechanical device such as a float (floater) and the gas discharge valve without using any electrical devices It is a first object to provide a mechanical gas-liquid separator of liquefied gas.

In addition, the present invention by installing a pressure regulator in each of the liquefied gas inlet and gas vent line of the inner container to adjust the set pressure of the pressure regulator, while maintaining the pressure constant, the cryogenic liquefied gas that can prevent the exhaustion of the internal liquid It is a second object to provide a mechanical gas-liquid separator.

In another aspect, the present invention is to provide a mechanical gas-liquid separator of cryogenic liquefied gas that can reduce the flow of liquid and gas by using a suction pipe is formed with a suction hole and a porous wire mesh is installed.

In order to achieve the first object of the present invention, the present invention consists of an inner container and an outer container, and sucks the cryogenic liquefied gas through the suction pipe and stores it in the inner container, and equip the liquid separated from the inner container through the liquid supply pipe A gas-liquid separator configured to supply to a gas liquid separator, the gas-liquid separator being installed on an upper side of the inner container and lifting up and down according to the liquid level of the liquid; And a gas discharge valve for discharging or blocking gas in the inner container by opening and closing the inner container side open end of the gas discharge pipe according to the rising and falling of the rich man, including a liquid level adjusting unit for adjusting the liquid level in the inner container. A mechanical gas-liquid separator of cryogenic liquefied gas is provided.

In addition, the present invention is composed of the inner container and the outer container in order to achieve the second object, and sucks and stores the cryogenic liquefied gas through the suction pipe, and supplies the liquid separated from the liquid container to the equipment through the liquid supply pipe In the gas-liquid separator configured to, the suction pressure regulator to adjust the set pressure to supply the liquefied gas to the interior of the inner container when the internal pressure of the inner container is lowered below the set pressure to the suction pipe in which the cryogenic liquefied gas is sucked. And a back pressure regulator is installed at the rear end of the pressure holding pipe configured to discharge the gas of the inner container, and the internal pressure of the inner container is kept constant by adjusting the set pressures of the suction pressure regulator and the after pressure regulator. And a mechanical gas-liquid separator of cryogenic liquefied gas configured to prevent liquid depletion.

In addition, the present invention is composed of the inner container and the outer container in order to achieve the third object, and sucks and stores the cryogenic liquefied gas through the suction pipe, and supplies the liquid separated from the liquid container to the equipment through the liquid supply pipe In the gas-liquid separator, which is configured so that the suction pipe is inserted into the inside of the inner container, a pipe portion extending from the lower portion to the upper portion is installed, and an upper portion of the extended sub-extension portion is blocked and a constant interval is extended to the extended tube. As the suction hole is formed, the outside provides a mechanical gas-liquid separator of cryogenic liquefied gas is configured by installing a porous wire mesh.

According to the present invention, the cryogenic liquefaction which can stably adjust the level of the liquid inside a container using only a simple, semi-permanent mechanical device such as a floater or a gas discharge valve without using any electronic device. By constructing the gas-liquid separator of gas, it is possible to supply the liquid at a more stable pressure with unique technology to light bulb manufacturers and semiconductor manufacturers, and the durability is excellent because the auxiliary equipment required for the operation of the gas-liquid separator does not use electrical devices. In addition to manufacturing costs, maintenance costs are also lowered, resulting in cost savings.

These objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention with reference to the accompanying drawings in detail as follows.

1 is a schematic diagram showing the overall configuration of a mechanical gas-liquid separator of cryogenic liquefied gas according to the present invention.

As shown in the figure, the gas-liquid separator of the present invention is installed on the upper side of the inner container to achieve the first purpose, and the rich 210 to rise and fall according to the liquid level of the liquid, and the lifting of the rich Accordingly, the liquid level control unit 200 including the gas discharge valve 240 for discharging or blocking the gas in the inner container by opening and closing the inner container side open end of the gas discharge pipe may be configured.

In addition, the gas-liquid separator of the present invention, in order to achieve the second object, the set pressure to supply the liquefied gas to the interior of the inner container when the internal pressure of the inner container is lowered below the set pressure to the suction pipe in which the cryogenic liquefied gas is sucked Another embodiment may be configured by installing the adjusted suction pressure regulator 130 and installing a back pressure regulator 320 at the rear end of the pressure holding pipe configured to discharge the gas of the inner container.

In addition, the gas-liquid separator of the present invention, in order to achieve the third purpose, the pipe portion into which the suction pipe is inserted into the inside of the container extends from the bottom to the top, and suction holes are formed at regular intervals in the extended portion. On the outside thereof, a porous wire mesh may be installed to constitute another embodiment.

Here, each of the above embodiments may be implemented independently of each other, it can be of course also implemented integrally by one embodiment. In the following description, a case implemented by the preferred embodiment of FIG. 1 will be described as an example.

FIG. 2 is an enlarged view of the suction pipe of FIG. 1 in detail, and FIGS. 3A and 3B are views in which the gas discharge valve is locked by the liquid filling in the liquid level adjusting part of FIG. It is an enlarged view showing the state in which the discharge valve is open (FIG. 3B) in detail, and FIG. 4 is a mechanical gas-liquid separator system diagram of the cryogenic liquefied gas of FIG.

As shown in the drawings, the mechanical gas-liquid separator of the cryogenic liquefied gas according to the present invention is the cryogenic liquefied gas suction unit 100, the liquid level control unit 200, the pressure maintaining unit 300, and the liquid supply unit 400 It is a mechanical gas-liquid separator which operates only as a mechanical device without using any electric device. It is composed of an inner container (2) and an outer container (1) and insulates between the inner container and the outer container. It is applied to a gas-liquid separator configured to store the cryogenic liquefied gas and supply the liquid separated from the liquid container to the equipment of the rear stage through the liquid supply pipe 401 and the liquid supply valve 402.

The cryogenic liquefied gas suction unit 100 is an inlet pipe 110 through which the cryogenic liquefied gas is introduced, a suction pipe 140 connected between the inlet pipe and the inner container to suck the liquefied gas into the inner container, It is installed between the inlet pipe and the suction pipe, the cryogenic suction valve 120 for opening and closing the pipe into which the cryogenic liquefied gas flows, and installed between the cryogenic suction valve 120 and the suction pipe 140 to supply pressure of the inlet pipe. When the set pressure is adjusted to a low level and the pressure of the inner container is lower than the set pressure, it is composed of a suction pressure regulator 130 and the like to allow the cryogenic liquefied gas to be sucked into the inside of the inner container through the suction pipe. When the internal pressure of the container becomes lower than the set pressure by the suction pressure regulator at the inlet, when liquefied gas is sucked into the inside of the container through the suction pipe. The.

In particular, the suction pipe 140, the pipe portion inserted into the inside of the container is installed extending from the bottom to the upper portion, a plurality of suction holes 141 are formed on the side of the extended portion at regular intervals, Outside the porous wire mesh 142 is installed is configured. In this case, the porous wire mesh 142 may be formed of a wire mesh having a diameter smaller than 0.25 mm so that the gas is easily escaped and the liquid is released due to the viscosity to separate the liquid and the gas over time.

The liquid level adjusting unit 200 is installed on the upper side of the inner container and the rich 210 to rise and fall according to the liquid level of the liquid, the lever 220 to support the rich 210 to be elevated according to the liquid level of the liquid 220 ), The rich guide 230 surrounding the rich so as to reduce the movement of the rich from the flow of the liquid is installed on the opposite side to the rich 210 of the lever 220, the gas discharged in accordance with the lifting of the rich 210 It includes a gas discharge valve 240 for opening and closing the inner container side open end of the pipe 250 to discharge or block the gas inside the inner container. The lever 220 is fixed such that one end thereof is movable to the inner container side end of the gas discharge pipe, and the other end thereof is connected to the upper end of the rich 210, whereby the lever 220 is the liquid level of the liquid According to the elevable support of the rich 210, the gas discharge valve 240 according to the lifting of the rich 210 opens and closes the open end of the inner container side of the gas discharge pipe 250, by this operation inside the inner container Liquid level is mechanically adjusted automatically. Here, the rich guide 230 may be formed using a plurality of gas inlet holes 231 so that gas introduced into the inner container can be introduced into the inside of the rich guide.

The pressure maintaining unit 300 is installed on the upper portion of the inner container, the pressure holding pipe 310 for discharging the gas to maintain the internal pressure of the inner container, installed at the rear end of the pressure holding pipe and maintaining the pressure of the inner container It is installed on the upper part of the inner container, including a back pressure regulator 320 for adjusting the set pressure for the pressure gauge 330 connected to the pressure holding pipe and indicating a pressure inside the inner container. When the pressure of the inner container rises, maintain the internal pressure of the inner container at the set pressure by the after pressure regulator.

Mechanical gas-liquid separator of the cryogenic liquefied gas according to the present invention configured as described above is composed of a container and an outer container for cryogenic insulation as in the conventional, as shown in Figure 1 to 4, using a heat insulating material and a vacuum Are insulated.

First, the cryogenic liquefied gas mixed with liquid and gas in the cryogenic liquefied gas suction unit 100 is the suction pipe 140 of the gas-liquid separator through the inlet pipe 110, the cryogenic suction valve 120, and the cryogenic suction pressure regulator 130. It is sucked into the inner container (2), wherein the set pressure of the suction pressure regulator 130 is set lower than the supply pressure of the inlet pipe (110). Thus, when the pressure of the inner container 2 is slightly lower than the set pressure, the liquefied gas is sucked in, and as the pressure difference is increased, the liquefied gas is sucked in, so that no severe flow as in the electronic gas-liquid separator occurs. In particular, since the pressure in the inner container 2 does not need to be kept constant, even when the suction pressure regulator 130 is not used, there is almost no pressure difference between the pressure in the inlet pipe 110 and the inner container 2. The flow is very small. Nevertheless, because the liquid and gas are simultaneously drawn into the inner container, the liquid is mixed with the liquid inside the inner container to generate a flow. In order to reduce this flow, the suction pipe 140 is formed extending from the bottom of the inner container 2 to the top, the upper portion of the extended portion is blocked and a plurality of suction holes at regular intervals on the side of the extended pipe. 141 is formed, and a porous mesh 142 is installed outside. Here, the hole installed in the lower part is immersed in the liquid, so the liquid can escape to the lower hole, but the gas is raised to the upper part due to the light property and enters into the inner container through the upper hole exposed to the gas part. In addition, the gas passing through the hole can easily escape the fine hole (diameter <0.25 mm) of the wire mesh, but the liquid takes time to escape due to the viscosity, thereby reducing the flow of the liquid by separating the liquid and gas in large part.

The rich guide 230 of the liquid level control unit 200 is to minimize the movement of the rich from the flow of the liquid. The liquid entering the inner container 2 is accumulated in the lower portion, the gas is collected at the upper portion, and is discharged to the outside through the gas discharge valve 240. As the liquid level increases, the rich man 210 rises upward due to the collision caused by the buoyancy and the flow of gas. In the end, when the rich man floats on the liquid, the lever 210 and the gas discharge valve 240 have no gravity. The force is also not applied, the lever 220 and the gas discharge valve 240 is pushed upward by the force (or force due to the pressure difference) to push the gas out to the outside while the gas discharge valve 240 is closed do. Normally, when the floater is immersed in the liquid about 70-80%, it will float completely on the liquid. That is, the position of the gas discharge valve 240 is slightly higher than the height of the liquid level, it is preferable to be installed at a position of about 60 to 70% of the total volume of the container in order to reduce the pressure change due to heat infiltration and liquid supply.

When the liquid is used through the liquid supply pipe 401 installed in the lower portion of the inner container 2, the height of the liquid drops and the rich man receives a small buoyancy, thereby lowering the lever 220 by gravity against the force caused by the pressure difference. Pulled in the direction. When the rich portion is exposed to the gas portion more than 50% the gas discharge valve 240 is opened. When the gas enters into the rich guide through the gas inlet hole 231 installed in the rich guide 230, and the gas escapes through the gas discharge valve 240, the pressure of the inner container 2 drops and the back is retracted. Liquid and gas are introduced through the pipe (110). As this process is repeated, the liquid level is automatically maintained.

The suction pressure regulator 130 installed in the inlet pipe 110 supplies the liquefied gas only when the pressure of the inner container 2 is lower than the set pressure. If a large amount of liquid is instantaneously used in the liquid supply pipe 401 while the pressure of the inner container 2 is excessively high, the gas discharge rate of the gas discharge valve 240 is small. It takes time for the pressure to fall below the set pressure, and accordingly, it takes time to supply the liquefied gas from the suction pressure regulator 130 so that the liquid in the inner container is depleted or the liquid which is not sufficiently saturated is supplied. . In order to prevent this, the pressure of the inner container 2 should not be excessively higher than the set pressure, and it is usually kept not higher than 0.5 to 1.0 bar above the set pressure. The pressure holding pipe 310 is provided on the upper part of the inner container 2 to maintain the pressure separately from the connection vent pipe of the gas discharge valve 240, and the back pressure regulator 320 is provided. If the height of the liquid is set to about 0.5 bar higher than the set pressure of, the set pressure is reached when the height of the liquid is lowered by 3% than the reference height, and the liquefied gas is sucked into the inner container (2) so that the liquid is sufficiently supplied from the inlet pipe. If the liquid of the inner container 2 is depleted, it will not occur. The pressure of the container can be confirmed through the pressure gauge 330 connected to the pressure maintenance pipe 310.

Since the mechanical gas-liquid separator is operated at a constant pressure at all times, it is not necessary to use gravity to supply the liquid. Therefore, the electronic gas-liquid separator must be installed on a high ceiling, but the mechanical gas-liquid separator of the present invention can be installed at a height convenient for a driver, so the installation cost is low and the operation and maintenance are convenient. Best of all, the absence of any electrical equipment makes it very unlikely that a failure will occur, and the manufacturing cost will be as low as 70% of an electronic gas-liquid separator, and the life will be extended semi-permanently.

<Example>

The present invention was installed in a precursor manufacturer and a semiconductor manufacturer that use a lot of liquid nitrogen and conducted field tests. The pressure of the storage tank was 5 barg, the distance from the storage tank to the gas-liquid separator was about 60 to 100 m, and the liquid nitrogen was supplied through the vacuum insulation pipe. Conventional gas-liquid separator is difficult to install and difficult to operate because it is installed on the ceiling, the gas-liquid separator of the present invention can be installed right next to the manufacturing apparatus was easy to install and could check the state of the gas-liquid separator at any time during operation. The gas-liquid separator was operated at 3 barg, the back pressure regulator was set to 3.5 barg to maintain the internal pressure of the gas-liquid separator, and the liquid supply pipe was insulated from the bellows-type stainless steel pipe wrapped with Atyron tape. . The pressure of the contents was little changed at 3 barg, and no signs of liquid flow were found. In spite of the instantaneous excess of liquid, the supply pressure did not change, and there was no exhaustion of the liquid. In particular, unlike the electronic gas-liquid separator, the driver has no need to worry about the pressure of the storage tank, the height of the liquid level, and the operation and maintenance of the gas-liquid separator.

The present invention is a novel concept of gas-liquid separator which is operated by only mechanical operation without using any electric device, unlike the conventional electronic gas-liquid separator. While maintaining a constant supply pressure of liquids, the manufacturing cost is only about 70% of an electronic gas-liquid separator, it is easy to install, requires little operation and maintenance, and is fully automatic, requiring no professional operator. It was not.

In the above, the present invention has been shown and described with respect to certain preferred embodiments. However, the present invention is not limited to the above-described embodiments, and those skilled in the art to which the present invention pertains can variously change variously without departing from the technical spirit of the present invention described in the following claims. You can do it.

1 is a schematic diagram showing the overall configuration of a preferred embodiment of a mechanical gas-liquid separator of cryogenic liquefied gas according to the present invention,

Figure 2 is an enlarged view showing in detail the suction pipe of Figure 1,

3A is an enlarged view illustrating in detail a state in which the gas discharge valve is locked by the liquid filling in the liquid level adjusting unit of FIG. 1;

3B is an enlarged view illustrating in detail a state in which a gas discharge valve is opened by using liquid in the liquid level adjusting unit of FIG. 1;

FIG. 4 is a system diagram of the mechanical gas-liquid separator of the super-temperature liquefied gas of FIG. 1.

<Description of the symbols for the main parts of the drawings>

1: outer container 2: container 3: level height

100: liquefied gas suction unit 110: inlet pipe 120: cryogenic suction valve

130: suction pressure regulator 140: suction pipe 141: suction hole

142: porous wire mesh 143: wire mesh flange 200: liquid level control unit

210: rich man 220: leverage 230: rich man guide

231: gas inlet hole 240: gas discharge valve 250: gas discharge pipe

300: pressure holding part 310: pressure holding pipe 320: after pressure regulator

330: pressure gauge 400: liquid supply unit 401: liquid supply piping

402: liquid supply valve

Claims (3)

delete In the gas-liquid separator composed of the inner container and the outer container and sucked and stored the cryogenic liquefied gas through the suction pipe, the liquid-liquid separated from the inner container is supplied to the equipment through the liquid supply pipe, A rich man installed on the upper side of the inner container and lifting according to the liquid level of the liquid, a lever supporting the lifting of the rich according to the liquid level of the liquid, and the rich to reduce the movement of the rich from the flow of liquid. The rich guide is provided on the side opposite to the rich of the lever, and the gas discharge valve for opening or closing the inner container side open end of the gas discharge pipe in accordance with the lifting of the rich to discharge or block the gas inside the container, The guide includes a liquid level control unit having a plurality of gas inlet holes; An inlet pipe into which the cryogenic liquefied gas is introduced, a suction pipe connected between the inlet pipe and the inner container to suck the liquefied gas into the inside of the inner container, and a pipe installed between the inlet pipe and the suction pipe to introduce the cryogenic liquefied gas into the container. It is installed between the cryogenic intake valve opening and closing the cryogenic intake valve and the suction pipe and the set pressure is adjusted to be lower than the supply pressure of the inlet pipe so that the pressure of the inner container becomes lower than the set pressure, Cryogenic liquefied gas suction unit having a suction pressure regulator for allowing the cryogenic liquefied gas to be sucked into the inside; And A pressure holding pipe for discharging gas to maintain the internal pressure of the inner container, a back pressure regulator installed at a rear end of the pressure holding pipe and adjusting a set pressure for maintaining the pressure of the inner container, the pressure A mechanical gas-liquid separator of cryogenic liquefied gas, comprising: a pressure holding unit connected to the holding pipe and having a pressure gauge indicating a pressure inside the container. The method of claim 2, The suction pipe, In order to reduce the flow of liquid and gas, a pipe part inserted into the inside of the container is installed extending from the bottom to the top, the upper part of the extended part is blocked and a plurality of suctions at regular intervals on the side of the extended pipe. A hole is formed, the mechanical gas-liquid separator of cryogenic liquefied gas, characterized in that the porous wire mesh is installed on the outside.

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