KR20170010199A - Test storage tank - Google Patents
Test storage tank Download PDFInfo
- 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
- Authority
- KR
- South Korea
- Prior art keywords
- tank
- heat insulating
- tank body
- main body
- liquefied gas
- Prior art date
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Classifications
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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
Description
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
1 to 8, a
1, the
The tank
As shown in FIG. 1, the
At this time, the
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
The
As shown in FIG. 1, a
As shown in Fig. 3, the
Then, the vaporizer E can vaporize and discharge the liquefied gas overflowing to the upper portion of the tank
The supply and discharge of the filling liquefied gas to the
The
1 (b), the
The
The
1 (b), the connecting
The upper end of the
A moving
A connecting
The sealing
Although not shown, the sealing
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
The
When the liquefied gas is charged into the tank
At this time, the outside of the
An air supply line for circulating the outside air to the
The air supply line may be installed in connection with the lower part of the
4A and 7, the
4 (a), the
When the liquefied gas is charged into the tank
When the liquefied gas is discharged from the tank
As a result of the experiment according to the embodiment shown in FIG. 4 (a), when the
That is, when the
6, the
7, the
The
Two stages of the heat insulating
This is because it is possible to secure the primary cavity while the
8, the
The
The
The
The lower end of the
As shown in Fig. 1 (b), the
The
The connecting
The
4 (b), the connecting
The sealing
As shown in FIG. 2, the liquefied gas charged in the tank
A
The
The
The
The liquefied gas charged in the tank
3, the liquefied gas charged through the
The second discharging
In the case of the
The liquefied gas charged in three directions can be quickly discharged through the first outlet, the second outlet, and the
The volume of the
More preferably, the volume of the
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)
And a central cavity formed in the inside of the tank body and separated from the outside air by the tank body.
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.
And a heat insulating member provided detachably to the tank body to adjust the heat insulating performance of the tank body.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150100939A KR101819280B1 (en) | 2015-07-16 | 2015-07-16 | Test storage tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150100939A KR101819280B1 (en) | 2015-07-16 | 2015-07-16 | Test storage tank |
Publications (2)
Publication Number | Publication Date |
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KR20170010199A true KR20170010199A (en) | 2017-01-26 |
KR101819280B1 KR101819280B1 (en) | 2018-01-17 |
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KR1020150100939A KR101819280B1 (en) | 2015-07-16 | 2015-07-16 | Test storage tank |
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KR (1) | KR101819280B1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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KR102163016B1 (en) | 2018-11-28 | 2020-10-07 | 한국가스공사 | Gas tight confirmation device of storage tank and Gas tight confirmation method using it |
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2015
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