KR102191750B1 - Iso tank multi-vacuum connection module and iso tank multi-vacuum forming method - Google Patents

Abstract

An embodiment of the present invention is an ISO tank multi-vacuum connection module for forming a vacuum to form the spaced space of an ISO tank container having an inner tank in which liquefied gas is accommodated and an outer tank forming a spaced space between the inner tank TANK MULTI-VACUUM CONNECTION MODULE) is provided. The ISO tank multi-vacuum connection module includes a main pipe connected to a general vacuum pump or a high vacuum pump; A first layer pipe including a plurality of first branch pipes in communication with the spaced spaces of the plurality of ISO tank containers on the first floor, and a first connection pipe connecting the plurality of first branch pipes in parallel and connected to the main pipe ; A second layer pipe including a plurality of second branch pipes each communicating with each of the spaced spaces of the plurality of ISO tank containers of the second floor, and a second connection pipe connecting the plurality of second branch pipes in parallel; A multi-stage platform supporting the first and second layer pipes; A valve unit installed in each branch pipe and opened and closed for vacuum operation; And a vacuum selection valve installed on the main pipe.

Description

ISO tank multi-vacuum connection module and ISO tank multi-vacuum formation method {ISO TANK MULTI-VACUUM CONNECTION MODULE AND ISO TANK MULTI-VACUUM FORMING METHOD}

The present invention relates to an ISO tank multi-vacuum connection module and an ISO tank multi-vacuum forming method, and more particularly, to perform a vacuum operation on a plurality of ISO tank containers having a spaced space for vacuum insulation between the inner and outer tanks. It relates to the ISO tank multi-vacuum connection module and ISO tank multi-vacuum forming method.

As an alternative to environmental problems, many countries are studying the use of LNG (Liquified Natural Gas) as fuel.

LNG (Liquefied Natural Gas) and LPG (Liquefied Petroleum Gas) are chemically pure hydrocarbons and can be completely burned when combusted. LNG and LPG are clean fuels that contain a small amount of sulfur, and do not emit fine dust (PM10), and nitrogen oxides (NOx) are 95% and sulfuric acid when they are combusted compared to the conventional heavy fuel oil (HFO). Freight (SOx) is reduced by more than 90%. Therefore, LNG and LPG are clean fuels that can replace existing fuels such as gasoline, diesel oil, and heavy oil, and demand for them is expected to increase continuously.

In LNG, methane is the main component of 70-90%. In order to facilitate transport and storage of LNG, when the gaseous gas is cooled to -162 degrees and liquefied, the volume is reduced to 1 in about 700 minutes, and LNG is stored and handled as such liquefied gas in a tank.

LPG has a higher operating temperature than LNG and can be stored at room temperature depending on the storage pressure, so it is widely used worldwide. In addition, the volume of LPG is reduced to about 1/250 compared to gaseous gas, making it convenient for storage and transportation.

Such LNG or LPG can be handled by being filled in ISO tank containers and transported or stored. ISO tank containers are containers for liquids manufactured according to internationally promised standards such as IMO (International Maritime Organization) and ISO (International Organization for Standardization), and are containers made for transporting liquid food or chemical products, especially dangerous goods such as liquefied gas. Say.

As illustrated in FIG. 1, the ISO tank container consists of an inner tank 110 made of stainless steel that can store liquid of -196 degrees and an outer tank 130 made of carbon steel to which vacuum insulation for insulation is applied. And, the inner tub 110 is assembled in the outer tub 130, and the frame 190 (see FIG. 9) is coupled to both ends of the outer tub 130 to be formed.

In the piping structure of a typical ISO tank container, as illustrated in FIG. 1, one pipe 140 is used as the In/Out pipe of the vapor line, and the other pipe 150 is used as the In/Out pipe of the liquid line. Used as /Out piping.

As described above, after the inner tank and the outer tank are combined to produce an ISO tank container, a vacuuming operation is performed to form vacuum insulation in the spaced space between the inner tank and the outer tank. For example, vacuum work is performed by connecting a vacuum pump to a vacuum isolation valve 160 connected to a spaced space as shown in FIG. 1. In other words, it works by connecting a vacuum pump to one ISO tank container.

However, by operating the vacuum pump, the vacuuming operation may be performed for several hours to 10 hours or more. Therefore, it takes a lot of time, and there is a problem in that productivity is deteriorated because the ISO tank container is vacuumed one by one using a vacuum pump of a limited number and performance.

In particular, after performing the primary work with a general vacuum pump for general vacuum (e.g., 0.1 Torr or less), the vacuum pump and ISO tank container are separated, and the high vacuum pump for high vacuum (0.002 Torr or less) work is connected to the ISO tank container again. In the case of performing the secondary high vacuum operation afterwards, it takes more time to connect and disconnect the ISO tank container, the general vacuum pump, and the high vacuum pump, and as the number of connection and disconnection increases, vacuum leakage or pressure leakage occurs. There is a problem that the possibility of occurrence of defects also increases.

The technical problem to be achieved by the present invention is an ISO tank multi-vacuum connection module and ISO tank multi-vacuum that can perform vacuuming of a spaced space for vacuum insulation between the inner and outer tanks of an ISO tank container at once for a plurality of ISO tank containers. It is to provide a method of formation.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

In order to achieve the above technical problem, an embodiment of the present invention is an inner tank in which liquefied gas is accommodated, and an outer tank surrounding the circumference of the inner tank and the inner surface being spaced apart from the outer surface of the inner tank to form a space between the inner tank It provides an ISO tank multi-vacuum connection module (ISO TANK MULTI-VACUUM CONNECTION MODULE) for forming the separation space of the ISO tank container with a vacuum. The ISO tank multi-vacuum connection module includes: a main pipe connected to a general vacuum pump and a high vacuum pump capable of forming a higher vacuum than the general vacuum pump; A first including a plurality of first branch pipes connected to each of the spaced spaces of the plurality of ISO tank containers on the first floor, and a first connection pipe connected in parallel to the plurality of first branch pipes and connected to the main pipe First floor plumbing; Parallel connection of a plurality of second branch pipes and the plurality of second branch pipes respectively communicated to the spaced spaces of the plurality of ISO tank containers of the second layer stacked on the plurality of ISO tank containers of the first layer A second layer piping including a second connection pipe; A multi-stage platform supporting the first and second layer pipes; A valve unit installed in each branch pipe of the plurality of first branch pipes and the plurality of second branch pipes to open and close for vacuum operation by the general vacuum pump or the high vacuum pump; And a vacuum selection valve installed on the main pipe to select communication between the general vacuum pump and the high vacuum pump, and the first layer pipe and the second layer pipe.

In an embodiment of the present invention, the vacuum selection valve is installed in the main pipe connected to the general vacuum pump, and for the primary vacuum operation by the general vacuum pump, a plurality of ISO tank containers of the first layer and A primary valve that is opened with the opening of each valve unit connected to the plurality of ISO tank containers of the second layer; And it is installed in the main pipe connected to the high vacuum pump, for the secondary vacuum operation by the high vacuum pump, the opening of the valve unit connected to an ISO tank container selected from among a plurality of ISO tank containers on which the primary vacuum operation has been performed It may include; a secondary valve that is opened together.

In an embodiment of the present invention, the plurality of main pipes may be connected in parallel to the first connection pipe, and the high vacuum pump may be connected to each of the plurality of main pipes connected in parallel to the first connection pipe.

In an embodiment of the present invention, each valve unit includes a primary vacuum valve; Secondary vacuum valve; And a shutdown valve (SDV) connected to the first vacuum valve and the second vacuum valve.

In an embodiment of the present invention, the multi-stage platform is a one-layer support for supporting the first connecting pipe extending in a left and right direction, and the plurality of first branch pipes branching from the first connecting pipe is the first floor A one-layer support formed to face the front of the support; As a two-layer support for supporting the second connecting pipe extending in the left-right direction from the upper side of the first-layer support, the plurality of second branch pipes branching from the second connecting pipe face the front of the second-layer support A two-layer support formed to be; A support pillar connecting the first-layer support and the second-layer support; And a ladder installed at one end of the first and second floor supports in the left and right directions.

In an embodiment of the present invention, a vertical pipe extending vertically from the other left and right ends of the first and second floor supports to communicate the first connection pipe and the second connection pipe; And it may further include a; support for supporting the main pipe and the primary valve and the secondary valve protruding to the one end.

In order to achieve the above technical problem, another embodiment of the present invention is an inner tank in which liquefied gas is accommodated, and an outer tank that surrounds the circumference of the inner tank and the inner surface is spaced apart from the outer surface of the inner tank to form a spaced space between the inner tank. It provides an ISO tank multi-vacuum forming method for forming a plurality of each of the separation spaces in a vacuum of the ISO tank container having a. In the ISO tank multi-vacuum forming method, each valve unit connected to the plurality of ISO tank containers of the first layer and the plurality of ISO tank containers of the second layer is opened using an ISO tank multi-vacuum connection module. Step to do; Closing the secondary valve and opening the primary valve; Operating the general vacuum pump to perform the primary vacuum operation; Closing the valve unit and the primary valve of the ISO tank container other than the selected ISO tank container among the plurality of ISO tank containers on which the primary vacuum operation has been performed, and opening the secondary valve; And performing the second vacuum operation on the selected ISO tank container by operating the high vacuum pump.

In an embodiment of the present invention, closing the valve unit of the ISO tank container on which the secondary vacuum operation has been performed, and opening the valve unit of the ISO tank container additionally selected from among the remaining ISO tank containers; And performing the secondary vacuum operation on the additionally selected ISO tank container by operating the high vacuum pump.

In an embodiment of the present invention, the performing of the secondary vacuum operation includes a plurality of selected ISOs using the high vacuum pump connected one by one to each of the plurality of main pipes connected in parallel to the first connection pipe according to claim 3. It can be done for tank containers.

In an embodiment of the present invention, between the first vacuum operation step and the second vacuum operation step, pressure leakage through a sensor installed in the first layer pipe, the second layer pipe, or the main pipe. Confirming; And the step of confirming the pressure leakage through the vacuum gauge of the ISO tank container itself in which the secondary vacuum operation has been performed; may further include.

According to an embodiment of the present invention, in order to form an insulating vacuum between the inner and outer tanks of the ISO tank, a plurality of ISO tank containers are stacked horizontally and vertically to continuously perform a general vacuum operation and a high vacuum operation at once. As a result, the manufacturing period of the ISO tank container can be shortened.

In addition, the effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a diagram showing an example of an ISO tank container.
2 is a diagram showing an ISO tank multi-vacuum connection module according to an embodiment of the present invention.
3 is a view for explaining an ISO tank multi-vacuum connection module according to an embodiment of the present invention.
4 is a view for explaining an example of a coupling structure between a multi-platform and a pipe of the ISO tank multi-vacuum connection module according to an embodiment of the present invention.
5 is a view showing an example of a connection pipe, a branch pipe, and a vacuum valve.
6 is a diagram illustrating an example in which each branch pipe is connected to an ISO tank container.
7 is a view showing an ISO tank multi-vacuum connection module according to another embodiment of the present invention.
8 is a flowchart illustrating a method of forming an ISO tank multi-vacuum according to an embodiment of the present invention.
9 is a diagram illustrating an example in which an ISO tank multi-vacuum connection module according to an embodiment of the present invention is applied to an ISO tank container stacking module.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, it means that other components may be further provided, rather than excluding other components unless specifically stated to the contrary.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

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

2 is a diagram showing an ISO tank multi-vacuum connection module according to an embodiment of the present invention. 3 is a view for explaining an ISO tank multi-vacuum connection module according to an embodiment of the present invention.

ISO tank multi-vacuum connection module (ISO TANK MULTI-VACUUM CONNECTION MODULE) is a process of forming vacuum insulation during the manufacturing process of the ISO tank container 100, and is used to vacuum work a plurality of ISO tank containers 100 at once. I can.

Typically, the ISO tank container 100 is an inner tank 110 in which an object of high pressure (eg, liquefied gas or gas gas in which liquefied gas is vaporized) is accommodated, and the inner surface of the inner tank 110 is wrapped around the inner tank 110. It may have an outer tank 130 that is spaced apart from the outer surface to form a spaced space between the inner tank 110 and the inner tank 110. A vacuum isolation valve 160 as shown in FIG. 1 is connected to the spaced space, and a vacuum pump is connected to the vacuum isolation valve 160 to perform a vacuum operation on the spaced space.

The ISO tank container 100 may include a frame coupled to both ends of the outer tank 130. The ISO tank container 100 may be horizontally and vertically stacked by the coupling between the frames. The plurality of ISO tank containers 100 stacked horizontally and vertically in this way is referred to as an ISO tank container stacking module.

The ISO tank multi-vacuum connection module according to the present invention can shorten the manufacturing period of the ISO tank container 100 by providing a means for easily performing a vacuum operation for the ISO tank container stacking module at once.

The ISO tank multi-vacuum connection module may include a main pipe 410, a first layer pipe 420, a second layer pipe 430, a multistage platform 450, a valve unit 460, and a vacuum selection valve 470. have.

The main pipe 410 may be connected to a general vacuum pump 200 and a high vacuum pump 300 capable of forming a higher vacuum than the general vacuum pump 200. For example, as shown in FIG. 2, the main pipe 410 may be branched into two pipes and connected to the general vacuum pump 200 and the high vacuum pump 300, respectively.

Since the plurality of ISO tank containers 100 is vacuum-worked at once by the ISO tank multi-vacuum connection module, a vacuum pump having a large capacity may be used.

In this embodiment, the general vacuum pump 200 may be a vacuum pump for forming a vacuum of about 0.1 Torr or less. Using a small number of ISO tank containers 100, for example, one general vacuum pump 200, the primary vacuum operation may be performed at once.

On the other hand, the high vacuum pump 300 may be a vacuum pump for forming a vacuum of about 0.002 Torr or less. If capacity and performance are allowed, a second vacuum operation to further increase the degree of vacuum may be performed using one high vacuum pump 300 for the plurality of ISO tank containers 100 on which the first vacuum operation has been performed.

However, in general, the high vacuum pump 300 may have a capacity limit more than that of the general vacuum pump 200. Therefore, in terms of cost and efficient use of the device, when using one high vacuum pump 300, it is preferable that the secondary vacuum operation is performed for a smaller number of ISO tank containers 100 than the primary vacuum operation. Do.

For example, a secondary vacuum operation is performed using a high vacuum pump 300 for one ISO tank container 100, and a secondary vacuum pump 300 is used for another ISO tank container 100 in sequence. Vacuum operation can be performed.

The ISO tank container stacking module can have two layers stacked. That is, a plurality of ISO tank containers 100 of the second layer may be stacked on the plurality of ISO tank containers 100 of the first layer to form an ISO tank container stacking module. Of course, it is also possible to form an ISO tank container 100 with three or more layers. In this case, the ISO tank container 100 multi-vacuum connection module may also be formed in a structure having three or more layers of pipes.

The first-floor pipe 420 may include a first connection pipe 421 and a plurality of first branch pipes 423. The plurality of first branch pipes 423 may be respectively connected to the spaced spaces of the plurality of ISO tank containers 100 on the first floor, that is, to the vacuum isolation valve 160 of the ISO tank container 100. The first connection pipe 421 connects the plurality of first branch pipes 423 in parallel and may be connected to the main pipe 410.

The second layer pipe 430 may include a second connection pipe 431 and a plurality of second branch pipes 433.

The plurality of second branch pipes 433 may be connected to each spaced space of the plurality of ISO tank containers 100 of the second layer, that is, the vacuum insulation valve 160 of the ISO tank container 100. The second connector 431 may connect a plurality of second branch pipes 433 in parallel.

The second layer pipe 430 may also be connected to the main pipe 410. For example, the second-floor pipe 430 may be connected to the main pipe 410 separately from the first-floor pipe 420 or may communicate with the main pipe 410 through the first-floor pipe 420.

In the case of the example shown in FIG. 2, the ISO tank multi-vacuum connection module may further include a vertical pipe 440 communicating the first connection pipe 421 and the second connection pipe 431.

The multistage platform 450 may support the first layer pipe 420 and the second layer pipe 430. The first connector and the second connector 431 extend long in the left and right direction, and may be connected by a vertical tube 440. 2 and 3, the plurality of first branch pipes 423 and the plurality of second branch pipes 433 may extend toward the front of the multi-stage platform 450.

The first-floor pipe 420, the second-floor pipe 430, and the main pipe 410 may be variously modified in addition to the shapes shown in FIGS. 2 and 3.

The valve unit 460 may be installed in each branch pipe of the plurality of first branch pipes 423 and the plurality of second branch pipes 433. The valve unit 460 may be entirely or selectively opened or closed during the primary vacuum operation by the general vacuum pump 200 or the secondary vacuum operation by the high vacuum pump 300.

For example, each valve unit 460 may include a primary vacuum valve 461, a secondary vacuum valve 463, and a shutdown valve connected to the primary vacuum valve 461 and the secondary vacuum valve 463 ( SDV).

Meanwhile, the vacuum selection valve 470 may be installed in the main pipe 410. Connection between the general vacuum pump 200 and the high vacuum pump 300 and the first layer pipe 420 and the second layer pipe 430 may be selected through the vacuum selection valve 470. For example, the main pipe 410 is branched into two pipes, and a general vacuum pump 200 and a high vacuum pump 300 may be connected to each branched pipe.

For example, the vacuum selection valve 470 is installed in the primary valve 471 installed in the main pipe 410 connected to the general vacuum pump 200 and the main pipe 410 connected to the high vacuum pump 300 It may include a secondary valve 473.

In a state in which the secondary valve 473 is closed and the primary valve 471 is opened, the primary vacuum operation may be performed by the general vacuum pump 200. Further, after the first vacuum operation, the second vacuum operation may be performed by the high vacuum pump in a state where the first valve 471 is closed and the second valve 473 is opened.

4 is a view for explaining an example of a coupling structure between a multi-platform 450 and a pipe of the ISO tank multi-vacuum connection module according to an embodiment of the present invention. 5 is a view showing an example of a connection pipe, a branch pipe, and a vacuum valve. 6 is a diagram illustrating an example in which each branch pipe is connected to the ISO tank container 100.

The multi-stage platform 450 may include a first-layer support 451, a second-layer support 453, a column 455, and a ladder 457.

The first-floor support 451 supports a first connecting pipe 421 extending in the left and right direction, and a plurality of first branch pipes 423 branching from the first connecting pipe 421 are formed of the first-floor support 451. It can be formed to face forward.

The second-layer support 453 supports a second connector 431 extending from the upper side of the first-floor support 451 in the left-right direction, and a plurality of second branch pipes 433 branching from the second connector 431 ) May be formed to face the front of the two-layer support 453.

The support pillar 455 extends in a vertical direction and may connect the first-layer support 451 and the second-layer support 453. The ladder 457 may be installed at one end of the first-floor support 451 and the second-floor support 453 in the left and right directions. If necessary, the operator can climb onto the second floor support 453 through the ladder 457. In addition, a railing for worker safety may be installed on the second floor support 453.

As shown in FIG. 4, the above-described vertical pipe extends vertically from the left and right ends of the first-layer support 451 and the second-layer support 453, so that the first connection pipe 421 and the second connection pipe 431 ) Can communicate.

In addition, the ISO tank container 100 multi-vacuum connection module may further include a support. The support portion may support the main pipe 410 protruding from one end of the multi-stage platform 450, the primary valve 471 and the secondary valve 473.

7 is a view showing an ISO tank multi-vacuum connection module according to another embodiment of the present invention.

In this embodiment, the ISO tank container 100 multi-vacuum connection described in Figs. 1 to 6, except that the ISO tank container 100 multi-vacuum connection module is configured to use a plurality of high vacuum pumps 300 Since it is substantially similar to the module, redundant descriptions are omitted.

7 is a plan view of the ISO tank container stacking module. The ISO tank container stacking module may include a plurality of ISO tank containers 100 of the first layer and ISO tank containers 100 of the second layer.

In this embodiment, the main pipe 410 is connected to the first connection pipe 421 of the first-floor pipe 420 and is connected to the general vacuum pump 200 and parallel to the first connection pipe 421. It may include a plurality of secondary main pipes connected to.

In a state where the valve units 460 installed in each branch pipe are all open, the primary valve 471 is opened, and the secondary valve 473 is closed, one large-capacity general vacuum pump 200 is used. The primary vacuum operation may be performed on the entire ISO tank container stacked module through the primary main pipe, the first layer pipe 420 and the second layer pipe 430.

Meanwhile, one high vacuum pump 300 may be connected to each secondary main pipe. Therefore, when the high vacuum pump 300 and the ISO tank container 100 are matched one to one, the secondary vacuum operation can be performed on the number of ISO tank containers 100 corresponding to the number of the high vacuum pump 300 at once. I can.

In addition, this secondary vacuum operation can be sequentially repeated to complete the secondary vacuum operation for the entire ISO tank container stacking module.

8 is a flow chart illustrating a method of forming an ISO tank multi-vacuum according to an embodiment of the present invention. 9 is a diagram illustrating an example in which an ISO tank multi-vacuum connection module according to an embodiment of the present invention is applied to an ISO tank container stacking module.

The ISO tank multi-vacuum forming method provides a method of performing vacuum work on the ISO tank container stacked modules at once. The ISO tank multi-vacuum forming method can be performed using the ISO tank multi-vacuum connection module described in FIGS. 1 to 7.

In the ISO tank multi-vacuum forming method, first, each valve unit 460 connected to the plurality of ISO tank containers 100 is opened (S10).

For example, the separation space of each ISO tank container 100 of the ISO tank container stacking module in which the first and second layers are stacked is in communication with the vacuum isolation valve 160 of the ISO tank container 100. Each first branch pipe 423 of the first-floor pipe 420 and each second branch pipe 433 of the second-floor pipe 430 may be connected to each vacuum isolation valve 160, and the first branch pipe The entire valve unit 460 installed in the 423 and the second branch pipe 433 may be opened.

Thereafter, the secondary valve 473 installed in the main pipe 410 is closed and the primary valve 471 is opened (S20).

Accordingly, the first-floor pipe 420 and the second-floor pipe 430 may communicate with the general vacuum pump 200.

Subsequently, the general vacuum pump 200 is operated to perform the primary vacuum operation (S30).

For example, after checking the current pressure through a sensor 480 (PIT) installed in the first-floor pipe 420, the second-floor pipe 430, or the main pipe 410, as shown in FIGS. 2 and 3 , It is possible to perform a vacuum operation by operating one large-capacity general vacuum pump 200.

The pressure may be monitored through a sensor 480 (PIT). When the reference pressure, for example, the degree of vacuum reaches 0.05 Torr, the primary valve 471 is closed and the general vacuum pump 200 is stopped.

Thereafter, vacuum leakage may be checked through a sensor (S40).

It may take about an hour or more to check for such a vacuum leak.

Next, the remaining valve units 460 and the primary valve 471 except for the valve unit 460 connected to the selected ISO tank container 100 are closed, and the secondary valve 473 is opened (S50).

Accordingly, the high vacuum pump 300 and the first-floor pipe 420 and the second-floor pipe 430 may communicate with each other.

Here, all the valve units 460 connected to the ISO tank container 100 except for the selected ISO tank container 100 in which the secondary vacuum operation is to be performed are closed. For example, as described above, when the valve unit 460 is composed of a primary vacuum valve 461, a secondary vacuum valve 463, and a shutdown valve, the valve unit 460 is closed after the primary vacuum operation. At this time, the primary vacuum valve 461 may be closed, and the secondary vacuum valve 463 may be opened. Alternatively, both the primary vacuum valve 461 and the secondary vacuum valve 463 may be in a closed state.

Thereafter, the high vacuum pump 300 is operated to perform a secondary vacuum operation on the selected ISO tank container 100 (S60).

When a high vacuum, for example, 0.00002 Torr is reached through the sensor, the high vacuum pump 300 is stopped and the secondary valve 473 is closed.

Next, it is possible to check the pressure leakage through the vacuum gauge 170 of the ISO tank container 100 itself (S70).

Since the secondary vacuum operation can be performed for each individual ISO tank container 100, pressure leakage can be checked for about 1 hour or more through the vacuum gauge 170 of the ISO tank container 100 itself.

Thereafter, a secondary vacuum operation is sequentially performed on the other ISO tank container 100 (S80).

For example, as shown in FIG. 2, the ISO tank container 100 is sequentially performed with a single high vacuum pump 300, one by one, or a plurality of high vacuum pumps are used as shown in FIG. It is possible to perform the secondary vacuum operation on the ISO tank container 100 at once, and also perform the secondary vacuum operation on the remaining ISO tank containers 100 in sequence.

In some cases, the step of checking for vacuum leakage may be omitted.

According to the above-described embodiments, the ISO tank container 100 can be disposed in a multi-layer parallel type (stacked module) by a multi-vacuum connection module to perform vacuum work at once, so that productivity is remarkably improved.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

100: container
110: housewife
130: external assistant
140: gas gas inlet valve
150: liquefied gas inlet valve
160: vacuum isolation valve
170: vacuum gauge
200: general vacuum pump
300: high vacuum pump
410: main pipe
420: first floor piping
421: first connector
423: Branch 1
430: second floor piping
431: second connector
433: 2nd branch building
440: vertical pipe
450: platform
451: first layer support
453: two-layer support
455: pillar
457: ladder
460: valve unit
461: primary vacuum valve
463: secondary vacuum valve
465: shutdown valve
470: vacuum selection valve
471: primary valve
473: secondary valve
480: sensor

Claims (10)

For forming the separation space of the ISO tank container with a vacuum, having an inner tank in which the liquefied gas is accommodated and an outer tank that surrounds the circumference of the inner tank and the inner surface is spaced apart from the outer surface of the inner tank to form a space between the inner tank In the ISO TANK MULTI-VACUUM CONNECTION MODULE,
A main pipe connected to a general vacuum pump and a high vacuum pump capable of forming a higher vacuum than the general vacuum pump;
A first including a plurality of first branch pipes connected to each of the spaced spaces of the plurality of ISO tank containers on the first floor, and a first connection pipe connected in parallel to the plurality of first branch pipes and connected to the main pipe First floor plumbing;
Parallel connection of a plurality of second branch pipes and the plurality of second branch pipes respectively communicated to the spaced spaces of the plurality of ISO tank containers of the second layer stacked on the plurality of ISO tank containers of the first layer A second layer piping including a second connection pipe;
A multi-stage platform supporting the first and second layer pipes;
A valve unit installed in each branch pipe of the plurality of first branch pipes and the plurality of second branch pipes to open and close for vacuum operation by the general vacuum pump or the high vacuum pump; And
A vacuum selection valve installed on the main pipe to select communication between the general vacuum pump and the high vacuum pump and the first layer pipe and the second layer pipe;
The vacuum selection valve is installed in the main pipe connected to the general vacuum pump, and for the primary vacuum operation by the general vacuum pump, a plurality of ISO tank containers of the first layer and a plurality of ISOs of the second layer A primary valve that is opened with the opening of each of the valve units connected to the tank container; And it is installed in the main pipe connected to the high vacuum pump, for the secondary vacuum operation by the high vacuum pump, the opening of the valve unit connected to an ISO tank container selected from among a plurality of ISO tank containers on which the primary vacuum operation has been performed Includes; a secondary valve that is opened together,
The plurality of main pipes are connected in parallel to the first connection pipe,
ISO tank multi-vacuum connection module, characterized in that one of the high vacuum pumps is connected to each of the plurality of main pipes connected in parallel to the first connection pipe.
delete delete The method of claim 1,
Each valve unit,
Primary vacuum valve;
Secondary vacuum valve; And
ISO tank multi-vacuum connection module comprising a; shutdown valve (SDV) connected to the primary vacuum valve and the secondary vacuum valve.
The method of claim 1,
The multi-stage platform,
A one-layer support body for supporting the first connection pipe extending in a left-right direction, wherein the plurality of first branch pipes branching from the first connection pipe are formed to face in front of the first-layer support body;
As a two-layer support for supporting the second connecting pipe extending in the left-right direction from the upper side of the first-layer support, the plurality of second branch pipes branching from the second connecting pipe face the front of the second-layer support A two-layer support formed to be;
A base column connecting the first-layer support and the second-layer support; And
An ISO tank multi-vacuum connection module comprising: a ladder installed at one end of the first and second floor supports in the left and right directions.
The method of claim 5,
A vertical pipe extending vertically from the left and right ends of the first and second floor supports to communicate the first connection pipe and the second connection pipe; And
ISO tank multi-vacuum connection module, characterized in that it further comprises a; support for supporting the main pipe and the primary valve and the secondary valve protruding to the one end.
An ISO tank container having an inner tank in which liquefied gas is accommodated, and an outer tank that surrounds the circumference of the inner tank and the inner surface is spaced apart from the outer surface of the inner tank to form a space between the inner tank and the inner tank. In the ISO tank multi-vacuum forming method for,
Opening each of the valve units connected to the plurality of ISO tank containers of the first layer and the plurality of ISO tank containers of the second layer by using the ISO tank multi-vacuum connection module according to claim 1;
Closing the secondary valve and opening the primary valve;
Operating the general vacuum pump to perform the primary vacuum operation;
Closing the valve unit and the primary valve of the ISO tank container other than the selected ISO tank container among the plurality of ISO tank containers on which the primary vacuum operation has been performed, and opening the secondary valve; And
Operating the high vacuum pump to perform the secondary vacuum operation on the selected ISO tank container; Including,
The step of performing the secondary vacuum operation is performed on a plurality of selected ISO tank containers by using the high vacuum pump connected one by one to each of the plurality of main pipes connected in parallel to the first connection pipe according to claim 1. ISO tank multi-vacuum formation method.
The method of claim 7,
Closing the valve unit of the ISO tank container on which the secondary vacuum operation has been performed, and opening the valve unit of the ISO tank container additionally selected from among the remaining ISO tank containers; And
An ISO tank multi-vacuum forming method further comprising: operating the high vacuum pump to perform the secondary vacuum operation on the additionally selected ISO tank container.
delete The method of claim 7,
Between the step of performing the first vacuum operation and the step of performing the second vacuum operation, pressure leakage is checked through a sensor installed in the first layer pipe, the second layer pipe, or the main pipe Step to do; And
ISO tank multi-vacuum forming method further comprising a; step of confirming the pressure leakage through the vacuum gauge of the ISO tank container itself in which the secondary vacuum operation has been performed.

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