KR20170010199A - Test storage tank - Google Patents

Test storage tank Download PDF

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Publication number
KR20170010199A
KR20170010199A KR1020150100939A KR20150100939A KR20170010199A KR 20170010199 A KR20170010199 A KR 20170010199A KR 1020150100939 A KR1020150100939 A KR 1020150100939A KR 20150100939 A KR20150100939 A KR 20150100939A KR 20170010199 A KR20170010199 A KR 20170010199A
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KR
South Korea
Prior art keywords
tank
heat insulating
tank body
main body
liquefied gas
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KR1020150100939A
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Korean (ko)
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KR101819280B1 (en
Inventor
유지원
윤성태
김기환
신건
서도원
유석진
Original Assignee
주식회사 포스코
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Priority to KR1020150100939A priority Critical patent/KR101819280B1/en
Publication of KR20170010199A publication Critical patent/KR20170010199A/en
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Publication of KR101819280B1 publication Critical patent/KR101819280B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12—Pressure testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/60—Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0044—Pneumatic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0222—Temperature
    • G01N2203/0228—Low temperature; Cooling means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/023—Pressure
    • G01N2203/0232—High pressure

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention provides a storage tank for a test, comprising: a tank main body storing liquefied gas filled in a gas filling unit formed between an inner tub and an outer tub; and a central cavity unit formed inside the tank main body and disconnected from external air by the tank main body. The present invention can reduce an amount of the used liquefied gas.

Description

{TEST STORAGE TANK}

The present invention relates to a test storage tank capable of testing the performance of an efficient liquefied gas storage tank.

It should be noted that the contents described in this section merely provide background information on the present invention and do not constitute the prior art.

Automobiles and ships are on the rise. For example, the liquefied gas may include liquefied natural gas (LNG) or liquefied petroleum gas (LPG).

Liquefied gas is much more volatile than gas (1/600 for LNG and 1/250 for LPG), which is convenient for storage and transportation, but the temperature is boiling point (-162 ° C for LNG and -50 ° C for LPG) Or less.

Therefore, cryogenic liquids, including LNG, LPG, etc., are stored or transported in a liquefied gas storage tank.

Such liquefied gas storage tanks are to be made of materials that can withstand external forces received at cryogenic temperatures. For example, 304 stainless steel, 9% nickel steel and the like have high yield strength and tensile strength at a cryogenic temperature, so they are widely used as liquefied gas storage tank materials. However, since the above materials are expensive and unstable nickel is used as a main raw material, they are very expensive and unstable in supply and demand. In order to overcome such disadvantages, a material having a high yield strength and tensile strength at a low cost and at a cryogenic temperature has been developed.

In addition, the liquefied gas storage tanks are to be designed to withstand the large pressures above 10 atmospheres, which are kept at a cryogenic temperature inside. Also, due to the temperature difference between the liquefied gas storage tank and the external environment, the pressure inside the tank increases due to the evaporation gas continuously generated in the storage tank.

An apparatus for effectively treating such evaporation gas is required. For this purpose, it is necessary to accurately predict the amount of evaporation gas generated.

Therefore, it is necessary to evaluate the cryogenic performance of liquefied gas storage tanks and the effects of changes in the external environment to ensure safety in advance.

The liquefied gas storage tank that has been manufactured is subjected to a pressure test using water pressure or air pressure and subjected to a low temperature test using liquid nitrogen (atmospheric pressure, -192 ° C.), which is an inert gas as necessary.

The temperature inside the tank should be lowered to the reference temperature (-162 ° C in the case of LNG) according to the type of liquefied gas stored in the low temperature test. However, the temperature inside the tank does not drop to the reference temperature due to continuous evaporation gas due to heat exchange with the outside In many cases.

Further, in order to release the liquid nitrogen after completion of the low-temperature performance test, a method of accelerating the vaporization rate by allowing the gas to be vaporized by natural convection or raising the ambient temperature by artificially raising the ambient temperature is used. These methods increase the performance test time and use additional energy.

In order to solve these technical problems, various test methods have been introduced. However, the conventional methods have a problem of consuming a large amount of liquefied gas for the performance test of the liquefied gas storage tank.

Also, in order to test the performance of the liquefied gas storage tank, a large amount of liquefied gas has to be injected into and discharged from the storage tank, so that the time required for the performance test of the storage tank becomes excessively long.

The present invention is realized by recognizing at least any one of the requirements or problems generated in the conventional storage tank.

In one aspect, the present invention provides a test storage tank capable of reducing the amount of liquefied gas used in the performance test of the storage tank.

The present invention, in one aspect, provides a test storage tank capable of reducing the amount of liquefied gas used in the performance test of the storage tank, thereby shortening the time for performance testing of the storage tank.

In one aspect, the present invention provides a test storage tank capable of shortening the charging time of the storage tank and shortening the time for discharging the liquefied gas by adjusting the heat insulating performance of the storage tank.

In accordance with one aspect of the present invention, there is provided a tank comprising: a tank body storing a liquefied gas charged in a gas filled portion formed between an inner tank and an outer tank; And a central cavity formed in the inside of the tank body and separated from the outside air by the tank body.

Preferably, the tank body includes: an inner tub formed in contact with the central cavity; An outer tub spaced outwardly from the inner tub; And a connecting member for connecting and sealing the inner tank and the outer tank.

Preferably, the heat insulating member may include a heat insulating member detachably provided to the tank body, the heat insulating member being capable of adjusting the heat insulating performance of the tank body.

Preferably, the heat insulating member is detachably attached to at least an outer circumferential surface of the outer circumferential surface and the inner circumferential surface of the tank main body, and the central cavity portion may be shielded from the outside air while the lower side of the tank main body is closed by the support structure.

Preferably, the heat insulating member is detachably installed on at least an outer circumferential surface of the outer circumferential surface and the inner circumferential surface of the tank main body, and the central hollow portion is sealed by the sealing member provided on the lower side of the tank main body, And can be formed in a vacuum state by a vacuum pump installed in the member.

Preferably, the heat insulating member may include a multi-stage heat insulating material layer detachably attached to the tank body so as to control the heat insulating performance of the tank body.

Preferably, the heat insulating member includes: a plurality of divided heat insulating units in the form of surrounding the tank body; And a fastening means for fastening the adjacent heat insulating unit. The fastening means may include a latch provided at a connecting portion of the heat insulating unit, and a joining tool for connecting the latch in a zigzag form.

Preferably, the tank body includes an inner tank provided in a lower opened state; An outer tub spaced apart from the inner tub and provided in a lower opened form; And a connecting member for connecting and sealing the inner tank and the lower portion of the outer tank.

Preferably, the outer tank includes a cylindrical outer sidewall portion extending upward from the opened bottom portion, and an outer ceiling portion covering the upper side of the outer sidewall portion to form a ceiling portion of the outer tank, The inner tank includes a cylindrical inner sidewall portion spaced inwardly from the outer sidewall portion and extending upward from the opened bottom portion, a cylindrical inner sidewall portion spaced inwardly from the outer ceiling portion and having a shape covering the upper side of the inner sidewall portion And a ceiling portion of the outer tub to form a ceiling portion of the outer tub. The connecting member may seal the lower end of the outer side wall portion and the lower end of the inner side wall portion.

Preferably, the connecting member is a ring-shaped member for sealing the lower end of the outer sidewall portion and the lower end of the inner sidewall portion, and the connecting member may be curved in a direction opposite to the gas charging portion.

Preferably, a first discharge portion formed on the upper side of the tank body and discharging the charged liquefied gas in a vaporized state; And a second discharge unit formed at a lower side of the tank body and discharging the liquefied gas filled in the storage tank to at least one of a vaporized state and a liquefied state.

Preferably, the volume of the gas filled portion formed in the tank body may be in a range of 10 to 30% of the total volume of the gas filled portion and the central cavity portion.

According to an embodiment of the present invention as described above, the use of the liquefied gas used in the performance test of the storage tank can be improved by including the central cavity formed in the inside of the tank body and disconnected from the outside air by the tank body To provide a test storage tank that can be reduced.

According to an embodiment of the present invention, the amount of the liquefied gas used in the performance test of the storage tank is reduced, thereby shortening the time required for the performance test of the storage tank.

According to an embodiment of the present invention, the heat insulating performance of the storage tank can be adjusted by including a heat insulating member capable of adjusting the heat insulating performance of the tank body, thereby shortening the charging time of the storage tank and shortening the time for discharging liquefied gas , The performance test of the storage tank can be repeatedly performed in a shorter period of time to evaluate the performance of the storage tank.

1 is a view showing a tank main body of a test storage tank according to an embodiment of the present invention.
2 is a view showing a tank main body of a test storage tank according to another embodiment of the present invention.
3 is a view showing the arrangement of the test storage tank and other facilities of the present invention.
4 is a cross-sectional view of a test storage tank according to one embodiment of the present invention.
Fig. 5 is a graph showing a temperature change at the time of performance test of the test storage tank before and after application of the heat insulating member of Fig. 2;
6 is a cross-sectional view of a test storage tank according to another embodiment of the present invention.
7 is a cross-sectional view of a test storage tank according to another embodiment of the present invention.
FIG. 8 is a view showing a state in which the heat insulating member is installed in the test storage tank of FIG. 2. FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. The shape and size of elements in the drawings may be exaggerated for clarity.

Hereinafter, a test storage tank 10 according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 to 8, a test storage tank 10 according to an embodiment of the present invention includes a tank body 100 and a central cavity portion 200, and further includes a heat insulating member 300 .

1, the test storage tank 10 includes a tank body 100 in which liquefied gas charged in a gas charging unit 160 formed between the inner tank 110 and the outer tank 130 is stored, And a central cavity 200 formed in the inner side of the main body 100 and separated from the ambient air by the tank main body 100.

The tank main body 100 includes an inner tank 110 and an outer tank 130 spaced apart from the inner tank 110. A gas filling portion 160 is formed between the inner tank 110 and the outer tank 130, The liquefied gas charged through the means S can be stored.

As shown in FIG. 1, the tank body 100 may be provided with a supply unit 190 through which the liquefied gas is supplied through the gas supply means S.

At this time, the supply unit 190 is preferably formed on the lower side of the tank body 100. When the liquefied gas is supplied to the tank main body 100, the liquefied gas absorbs heat and is vaporized. The supply unit 190 is disposed below the tank main body 100 so that the vaporized liquefied gas is installed on the upper side of the tank main body 100 and the discharge unit 170 can be effectively discharged.

Further, even if a separate leveler is not provided, there is an advantage that the amount of the liquefied gas charged through the pressure applied to the supply unit 190 can be calculated.

The supply unit 190 may constitute a peripheral system so as to serve also as a function of discharging the liquefied gas when the tank main body 100 desires to discharge the liquefied gas quickly.

As shown in FIG. 1, a discharge unit 170 may be formed at an upper portion of the tank body 100, where the evaporated gas vaporized by the liquefied gas is discharged naturally without any special care.

As shown in Fig. 3, the discharge portion 170 of the tank main body 100 can be linked to the vaporizer E. In this case, the liquefied gas stored in the gas charging unit 160 of the tank main body 100 may be more easily discharged through the discharge unit 170 formed above the tank main body 100 while being vaporized by the vaporizer E .

Then, the vaporizer E can vaporize and discharge the liquefied gas overflowing to the upper portion of the tank main body 100.

The supply and discharge of the filling liquefied gas to the test storage tank 10 can be controlled through the control unit C installed in association with the tank main body 100.

The tank body 100 may include an inner tank 110, an outer tank 130, and a connecting member 150.

1 (b), the tank body 100 includes an inner tank 110 formed in contact with the central cavity 200, and an outer tank 110 formed apart from the inner tank 110 in the outer direction And a connecting member 150 for connecting the inner tank 110 and the outer tank 130 to each other.

The gas charging unit 160 may be formed in a space surrounded by the inner tank 110, the outer tank 130, and the connecting member 150.

The inner tank 110 may form an outer peripheral surface of the central cavity 200 and may be spaced apart from the inner tank 110 and may form a gas filled portion 160 in a space between the outer tanks 130.

1 (b), the connecting member 150 may be a ring-shaped member that connects the lower end of the inner tub 110 and the lower end of the outer tub 130 to seal them. In this case, there is an advantage that it is easy to manufacture, but when the tank main body 100 is subjected to a large pressure, the pressure resistance performance may not be sufficiently exhibited.

The upper end of the inner tank 110 and the lower end of the outer tank 130 are connected to each other to seal the inner tank 110 and the lower end of the outer tank 130 as shown in FIG. As shown in Fig. In this case, when the tank main body 100 is subjected to a large pressure as compared with the plate-shaped ring-shaped connecting member 150, the pressure resistance performance can be sufficiently exhibited.

A moving carriage 700 and a sealing member 800 may be formed on the lower portion of the connecting member 150, which is formed by a curved ring-shaped member, on which inserting portions for inserting the connecting member 150 are respectively formed.

A connecting member 150 composed of a curved ring-shaped member may be mounted on the insertion portion of the moving carriage 700 and the sealing member 800.

The sealing member 800 is provided between the connecting member 150 of the tank main body 100 and the moving carriage 700 to improve the sealing force of the central cavity portion 200. [

Although not shown, the sealing member 800 may be installed between the support structure and the plate-shaped ring-shaped member. Needless to say, the connecting member 150, which is formed of a curved ring-shaped member, may be mounted on the support structure and the insertion portion of the sealing member 800.

In the conventional case, in order to lower the liquefied gas to the reference temperature, there is a problem that a considerable time is required due to a large amount of heat loss from the outside. Also, there is a problem that the evaporation gas generation amount and the liquefied gas consumption amount due to heat loss are increased and additional energy is required.

In order to solve such a problem, the test storage tank 10 of the present invention is detachably provided to the tank body 100, and is provided with a heat insulating member 300 having adjustable heat insulating performance of the tank body 100 . ≪ / RTI >

The test storage tank 10 is mounted on a support structure, a moving carriage 700 and a sealing storage tank 10 on a sealing means and the thermal storage member 300 is attached to the test storage tank 10, The liquefied gas charged in the test storage tank 10 can be discharged while the tank 10 is filled with the liquefied gas and the test storage tank 10 removes the heat insulating member 300 upon completion of the filling.

When the liquefied gas is charged into the tank main body 100, the heat insulating member 300 is attached to the tank main body 100 to enhance the heat insulating performance. When the liquefied gas is discharged from the tank main body 100, The tank main body 100 can be heat-exchanged with the outside so that the liquefied gas can be easily discharged from the inside of the tank main body 100.

At this time, the outside of the tank body 100 can be thermally insulated by the heat insulating member 300, and the inside of the tank body 100 can be isolated from the outside air by the central cavity 200.

An air supply line for circulating the outside air to the central cavity 200 through the lower side of the central cavity 200 is provided so that the inner tank 110 inside the tank body 100 is heat- The liquefied gas can be easily discharged from the inside thereof.

The air supply line may be installed in connection with the lower part of the central cavity 200 through the support structure or the moving carriage 700 on which the tank body 100 is mounted.

4A and 7, the heat insulating member 300 is detachably installed on at least an outer circumferential surface of an outer circumferential surface and an inner circumferential surface of the tank body 100, The lower side of the tank body 100 can be blocked by the outside air while being sealed by the supporting structure.

4 (a), the heat insulating member 300 may be detachably installed on the outer circumferential surface of the tank body 100. As shown in FIG.

When the liquefied gas is charged into the tank main body 100, the heat insulating member 300 is attached to the outside of the tank main body 100 to enhance the heat insulating performance. So that the insulation can be achieved.

When the liquefied gas is discharged from the tank main body 100, the heat insulating member 300 is removed from the outside of the tank main body 100 to exchange heat with the outside of the tank main body 100, It can be easily discharged.

As a result of the experiment according to the embodiment shown in FIG. 4 (a), when the heat insulating member 300 is not attached, even if the liquefied gas (using liquid nitrogen, -196 ° C.) It can be confirmed that the temperature did not fall below -120 캜 but dropped to -180 캜 or lower when the heat insulating member 300 was attached.

That is, when the heat insulating member 300 is attached, the temperature of the tank body 100 is lowered to a desired reference temperature, and when the liquefied gas is discharged after the filling, the heat insulating member 300 can be removed and the temperature rise can be accelerated The charging time of the test storage tank 10 can be shortened and the time for discharging the liquefied gas can be shortened.

6, the heat insulating member 300 is detachably installed on at least an outer circumferential surface of the outer circumferential surface and the inner circumferential surface of the tank main body 100, and the central cavity portion 200 is provided on the lower side of the tank main body 100 The vacuum pump 600 may be configured to be kept in a vacuum state by a vacuum pump 600 installed in the sealing member 500.

7, the heat insulating member 300 may be detachably attached to the inner circumferential surface and the outer circumferential surface of the tank body 100, respectively.

The heat insulating member 300 may be provided as a multi-stage heat insulating material layer 301 detachably attached to the tank body 100 so that the heat insulating performance of the tank body 100 can be adjusted.

Two stages of the heat insulating material layer 301 are installed in the outer tank 130 of the tank main body 100 and a single heat insulating material layer 301 can be installed in the inner tank 110 inside the tank main body 100.

This is because it is possible to secure the primary cavity while the central cavity 200 is formed on the side of the inner tank 110 which is the inside of the tank main body 100. Therefore, it is less necessary to increase the thickness of the heat insulating member 300. [

8, the heat insulating member 300 includes a plurality of divided heat insulating units 310 in the form of surrounding the tank body 100, and fastening means 310 for fastening the adjacent heat insulating units 310. [ Wherein the fastening means 330 includes a latch 331 provided at a connection portion of the heat insulating unit 310 and a joint tool 333 for connecting the latch 331 in a zigzag fashion, .

The latch 331 may be spaced apart from the connecting portion of the heat insulating unit 310 by a predetermined distance and the latch 331 of the first heat insulating unit 310 may be connected to the second heat insulating unit 310 The first heat insulating unit 310 and the second heat insulating unit 310 can be fixed while a joining tool 333 arranged in a portion corresponding to the center of the shackles 331 is installed in a zigzag form.

The latch 331 may include a joint having a cross section having a 'C' shape and an insertion fixture extending from the joint and being inserted and fixed into the inside of the joint member 300. At this time, the fastening means 330 may be made of a material having a low thermal conductivity.

The tank body 100 includes an inner tank 110 having a lower opening and an outer tank 130 spaced apart from the inner tank 110 and having a lower opening, And a connecting member 150 for connecting and sealing the lower portion of the outer tub 130. [

The lower end of the outer tub 130 and the inner tub 110 can be sealed by the connecting member 150 in a state where the inner tub 110 is separated from the outer tub 130 with the lower side opened, A gas filling portion 160 may be formed to surround the outer tub 110, the outer tub 130, and the connecting member 150.

As shown in Fig. 1 (b), the outer tub 130 includes a cylindrical outer sidewall portion 131 extending upward from the opened bottom portion, and a cylindrical outer sidewall portion 131 covering the upper side of the outer sidewall portion 131 And may include an outer ceiling portion 133 that forms a ceiling portion of the outer tub 130.

The inner tank 110 includes a cylindrical inner sidewall portion 111 spaced inwardly from the outer sidewall portion 131 and extending upward from the opened bottom portion, And an inner ceiling portion 113 formed to cover the upper side of the inner side wall portion 111 and forming a ceiling portion of the outer tank 130.

The connecting member 150 may be configured to connect the lower end of the outer side wall part 131 and the lower end of the inner side wall part 111 to seal it.

The connection member 150 is formed in a ring-shaped member that connects the lower end of the outer side wall portion 131 and the lower end of the inner side wall portion 111 to seal the connection member 150. The connection member 150 is curved in a direction opposite to the gas- .

4 (b), the connecting member 150 is composed of a ring-shaped member that hermetically connects the lower end of the inner tub 110 and the lower end of the outer tub 130, And may be formed in a curved shape opposite to the charging part 160. In this case, when the tank main body 100 is subjected to a large pressure as compared with the plate-shaped ring-shaped connecting member 150, the pressure resistance performance can be sufficiently exhibited.

The sealing member 800 may be provided movably on the conveying rail 710 by a wheel provided below the moving carriage 700. [

As shown in FIG. 2, the liquefied gas charged in the tank main body 100 can be discharged through the first discharge portion 171 and the second discharge portion 173.

A first discharge portion 171 formed on the upper side of the tank main body 100 and discharging the charged liquefied gas in a vaporized state and a second discharge portion 171 formed below the tank main body 100 to discharge the liquid stored in the test storage tank 10 And a second discharge portion 173 through which the liquefied gas charged therein is discharged in at least one of a vaporized state and a liquefied state.

The first discharge portion 171 may be formed on the tank main body 100 so that the discharge port for discharging the evaporated gas vaporized by the liquefied gas to the outside can be discharged naturally without any special care.

The second discharge portion 173 is formed on the lower side of the tank body 100 so that the liquefied gas charged in the test storage tank 10 can be discharged in at least one of a vaporized state and a liquefied state.

The second discharge portion 173 may be provided with a drain means D for discharging the liquefied gas filled in the tank main body 100. The liquefied gas charged in the tank main body 100 along the drain pipe can be discharged by the discharge pressure provided by the drain means D while the valve is opened.

 The liquefied gas charged in the tank main body 100 can be discharged through the first discharge portion 171, the second discharge portion 173, and the supply portion 190.

3, the liquefied gas charged through the first discharge portion 171 formed on the upper side of the tank main body 100 is discharged in a vaporized state, and the second discharge portion 173 formed on the lower side of the tank body 100, The liquefied gas charged in the test storage tank 10 is discharged through at least one of the supply ports 190 formed at the lower side of the tank main body 100 through the discharge port 173, The liquefied gas may be discharged to at least one of the vaporized state or the liquefied state.

The second discharging portion 173 and the supplying portion 190 may be provided with a drain means D for discharging the liquefied gas charged in the tank main body 100. [ The discharged liquefied gas along the drain pipe can be discharged by the discharge pressure provided by the drain means D while the valve is opened at the time of discharge.

In the case of the supply unit 190, the valve on the side of the gas supply means S for supplying the liquefied gas for filling is closed, and the valve on the drain means D side is opened. By the discharge pressure provided by the drain means D The liquefied gas charged in the tank main body 100 along the drain pipe can be discharged.

The liquefied gas charged in three directions can be quickly discharged through the first outlet, the second outlet, and the supply unit 190 serving also as a function of discharging the liquefied gas, thereby shortening the time for performance test of the test storage tank 10 There is an effect that can be made.

The volume of the gas charging part 160 formed in the tank main body 100 may be in the range of 10 to 30% of the total volume of the gas charging part 160 and the central cavity part 200. [

More preferably, the volume of the gas charging part 160 formed in the tank main body 100 may be in a range of 15 to 25% of the total volume of the gas charging part 160 and the central cavity part 200 have.

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, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. And will be apparent to those skilled in the art.

10: Test storage tank 100: Tank body
110: inner tub 111: inner side wall part
113: inner ceiling 130: outer tub
131: outer side wall part 133: outer ceiling part
150: connecting member 160: gas-
170: discharging part 171: first discharging part
173: second discharge portion 190: supply portion
200: central cavity part 300: insulating member
301: Insulation layer 310: Insulation unit
330: fastening means 331: latch
333: joint tool 400: support structure
500: sealing member 600: vacuum pump
700: Moving carriage 710: Feeding rail
800: sealing member C:
D: drain means E: vaporizer
S: gas supply means

Claims (12)

A tank main body in which liquefied gas charged in a gas charging part formed between the inner tank and the outer tank is stored; And
And a central cavity formed in the inside of the tank body and separated from the outside air by the tank body.
The water treatment system according to claim 1,
An inner tub formed in contact with the central cavity;
An outer tub spaced outwardly from the inner tub; And
And a connecting member for connecting and sealing the inner tank and the outer tank.
3. The method of claim 2,
And a heat insulating member provided detachably to the tank body to adjust the heat insulating performance of the tank body.
The heat exchanger according to claim 3,
A tank main body detachably attached to at least an outer peripheral surface of an outer peripheral surface and an inner peripheral surface of the tank body,
Wherein the central cavity comprises:
And the lower side of the tank body is sealed by the support structure and is shielded from the outside air.
The heat exchanger according to claim 3,
A tank main body detachably attached to at least an outer peripheral surface of an outer peripheral surface and an inner peripheral surface of the tank body,
Wherein the central cavity comprises:
Wherein the tank is sealed by a sealing member provided on a lower side of the tank body and is shielded from the outside air and is formed to be able to be held in a vacuum state by a vacuum pump installed on the sealing member.
The heat exchanger according to claim 3,
And a plurality of heat insulating layers detachably attached to the tank body so as to control the heat insulating performance of the tank body.
The heat exchanger according to claim 3,
A plurality of divided heat insulating units in the form of surrounding the tank body; And
And a fastening means for fastening the adjacent heat insulating unit,
The fastening means,
A latch provided at a connecting portion of the heat insulating unit, and a joint tool for connecting the latch in a zigzag form.
The water treatment system according to claim 1,
An inner tub provided in a lower opened form;
An outer tub spaced apart from the inner tub and provided in a lower opened form; And
And a connecting member for connecting and sealing the inner tank and the lower portion of the outer tank.
9. The method according to claim 8,
A cylindrical outer sidewall portion extending upward from the opened bottom portion,
And an outer ceiling portion covering the upper side of the outer side wall portion and forming a ceiling portion of the outer tank,
In the inner tank,
A cylindrical inner sidewall portion spaced inwardly from the outer sidewall portion and extending upward from the opened bottom portion,
And an inner ceiling portion spaced inwardly from the outer ceiling portion and configured to cover an upper side of the inner side wall portion to form a ceiling portion of the outer tank,
The connecting member includes:
And a lower end of the outer sidewall portion and a lower end of the inner sidewall portion are connected to each other to seal the test tank.
10. The connector according to claim 9,
And a ring-shaped member for sealing the lower end of the outer side wall part and the lower end of the inner side wall part to seal the same, wherein the reservoir tank is provided in a curved shape opposite to the gas charging part.
The method according to claim 1,
A first discharge portion formed on the upper side of the tank body and discharging the charged liquefied gas in a vaporized state; And
And a second discharge portion formed at a lower side of the tank body and discharging the liquefied gas charged in the storage tank to at least one of a vaporized state and a liquefied state.
The method according to claim 1,
Wherein the volume of the gas charging portion formed in the tank main body is in the range of 10 to 30% of the total volume of the gas filling portion and the central cavity portion.
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