KR101739871B1 - Simulation device of low temperature gas storage tank - Google Patents

Simulation device of low temperature gas storage tank Download PDF

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Publication number
KR101739871B1
KR101739871B1 KR1020150186280A KR20150186280A KR101739871B1 KR 101739871 B1 KR101739871 B1 KR 101739871B1 KR 1020150186280 A KR1020150186280 A KR 1020150186280A KR 20150186280 A KR20150186280 A KR 20150186280A KR 101739871 B1 KR101739871 B1 KR 101739871B1
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KR
South Korea
Prior art keywords
storage tank
gas storage
temperature gas
low temperature
low
Prior art date
Application number
KR1020150186280A
Other languages
Korean (ko)
Inventor
김숙환
박광수
이목영
김흥주
Original Assignee
주식회사 포스코
재단법인 포항산업과학연구원
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Priority to KR1020150186280A priority Critical patent/KR101739871B1/en
Application granted granted Critical
Publication of KR101739871B1 publication Critical patent/KR101739871B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/002—Thermal testing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • 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
    • 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
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour

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

Abstract

A low-temperature gas storage tank simulation apparatus according to an exemplary embodiment of the present invention includes a closed vessel in which an interior is formed in a vacuum, an LNG supply unit that is installed in the closed vessel and supplies LNG to the inside, A low temperature gas storage tank connected to the LNG exhaust unit to store the LNG; a supporter for supporting the low temperature gas storage tank inside the closed container; a plurality of measurement sensors provided inside the low temperature gas storage tank; And a measuring device for monitoring the sensed information from the sensor with the quantified data.

Description

TECHNICAL FIELD [0001] The present invention relates to a low temperature gas storage tank,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low temperature tank simulation test apparatus, and relates to a simulation test apparatus for reproducing and evaluating a low temperature behavior of a low temperature tank according to various adiabatic conditions.

Generally, the low-temperature gas storage tank is manufactured by installing external insulation, that is, vacuum insulation or polyurethane foam outside the tank. In this case, it is almost impossible to measure the deformation behavior of the tank when filling or discharging the low temperature liquefied gas. In addition, since the low temperature tank of the box type was subjected to the heat insulation treatment with the polyurethane foam to evaluate the behavior of the inside, it was difficult to keep the tank insulation constant.

Therefore, when developing a new steel or building a new type of storage tank, a simulated test device is required to evaluate the safety of the tank. Especially, since the temperature difference between the cryogenic gas storage tank and the atmosphere is very high, about 200 degrees, it is important to control the cooling and heating speed in the safe range for gas filling and discharging for safety of the tank. It is very important to set it through the tank safety operation.

After manufacturing the low temperature gas production tank to be manufactured or developed, the various sensors required for measurement are installed inside / outside of the storage tank, and the storage tank is put into a sealed container for maintaining vacuum insulation, Temperature gas storage tank simulation test apparatus capable of being monitored.

A low-temperature gas storage tank simulation apparatus according to an exemplary embodiment of the present invention includes a closed vessel in which an interior is formed in a vacuum, an LNG supply unit that is installed in the closed vessel and supplies LNG to the inside, A low temperature gas storage tank connected to the LNG exhaust unit to store the LNG; a supporter for supporting the low temperature gas storage tank inside the closed container; a plurality of measurement sensors provided inside the low temperature gas storage tank; And a measuring device for monitoring the sensed information from the sensor with the quantified data.

The closed vessel can be controlled to have a degree of vacuum by the vacuum pump, the vacuum exhaust device, and the vacuum control device to maintain the heat insulation.

The hermetically sealed container may be formed in a spherical shape.

The hermetically sealed container may be provided with a swing door through which the low-temperature gas storage tank can be inserted and removed.

The supporter may include a rail provided at an inner lower portion of the hermetically sealed container, a guide provided at an upper portion of the rail for supporting the low temperature gas storage tank, and a guide disposed between the rail and the guide, Ball bearings.

The supporter may further include an upper insulation provided between the guide and the low-temperature gas storage tank.

The supporter may further include a lower insulation provided between the rail and the sealed thermal insulation container.

The upper insulating material and the lower insulating material may have a trapezoidal shape in cross section.

The measurement sensor may be provided to measure temperature, pressure, displacement, gas level, gasification gas amount and strain of the low temperature gas storage tank.

The safety of the tank can be confirmed by repeatedly reproducing the degree of deformation of the tank according to the position of the low-temperature gas storage tank simulation test apparatus according to an embodiment of the present invention, depending on how low-temperature liquefied gas is filled in the tank.

In addition, it is possible to secure the insulation reliability safety of the tank by evaluating the heat penetration amount of the tank, and to freely set the heat insulating condition of the tank, and it is possible to evaluate and secure the integrity of the tank under various conditions.

Particularly, the structural design safety of the tank can be ensured under harsh conditions, which can greatly contribute to enhancement of the safety of the tank.

1 is a schematic view of a low temperature gas storage tank simulation test apparatus according to an embodiment of the present invention.
2 is a view schematically showing a structure of a supporter according to an embodiment of the present invention.

The terms first, second and third, etc. are used to describe various portions, components, regions, layers and / or sections, but are not limited thereto. These terms are only used to distinguish any moiety, element, region, layer or section from another moiety, moiety, region, layer or section. Thus, a first portion, component, region, layer or section described below may be referred to as a second portion, component, region, layer or section without departing from the scope of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified and that the presence or absence of other features, regions, integers, steps, operations, elements, and / It does not exclude addition.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

1 is a schematic view of a low temperature gas storage tank simulation test apparatus according to an embodiment of the present invention. The low temperature gas storage tank simulation test apparatus of FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the low temperature gas storage tank simulation test apparatus can be variously modified.

1, the low temperature gas storage tank simulation test apparatus 100 includes a closed container 10, a low temperature gas storage tank 20, a supporter 30, a plurality of measurement sensors 40, (50).

The hermetically sealed container 10 is hermetically sealed so as to block the low-temperature gas storage tank 20 from the outside atmosphere, and the inside thereof is formed in a vacuum. The degree of vacuum in the sealed container 10 is controlled by the vacuum pump 12, the vacuum exhaust device 14, and the vacuum control device (not shown) to maintain the heat insulation.

The hermetically sealed container 10 may be formed in a spherical shape, and a swing door (not shown) in which the low-temperature gas storage tank 20 can be inserted and removed may be provided.

The low-temperature gas storage tank 20 is embedded in the sealed vessel 10 and stores liquefied natural gas (LNG). The low-temperature gas storage tank 20 may be a tank modeled as a stand-alone storage tank provided on the ship, and may be an independent type or a membrane type. The independent storage tank may be provided on the vessel in such a form that it is made by attaching a heat insulating panel such as polyurethane to a tank body made of a metal such as an aluminum alloy and placed on a plurality of tank supports arranged on the inner bottom of the hull.

The cold gas storage tank 20 may be made of steel and non-ferrous materials, such as aluminum alloy, stainless steel, invar, etc., depending on the storage tanks in the development stage where performance testing is required.

The low temperature gas storage tank 20 may be connected to an LNG supply device 22 for supplying liquefied natural gas into the tank 20 and an LNG exhaust device 24 for exhausting LNG from the inside of the tank 20. [

The supporter 30 is provided inside the closed vessel 10 and supports the low temperature gas storage tank 20. The supporter 30 may be welded to the bottom surface of the closed container 10 at the bottom of the tank 20.

The plurality of measurement sensors 40 may be installed inside the low temperature gas storage tank 20. The measurement sensor 40 can measure the temperature, pressure, displacement, level of the liquid gas, amount of vaporized gas, and strain of the low temperature gas storage tank 20.

The measurement apparatus 50 can monitor the sensed information from the measurement sensor 40 with the quantified data. The measuring apparatus 50 repeats the degree of deformation corresponding to the position of the tank 20 (welded portion, the portion subjected to severe machining or other stress concentration portion) depending on how much the liquefied natural gas at low temperature is filled in the tank 20 The weak portion of the tank 20 can be verified and the safety of the tank 20 can be verified. In addition, the low-temperature behavior of the tank 20 according to various adiabatic conditions can be reproduced and evaluated. Also, the cooling rate of the low-temperature gas storage tank 20 can be controlled, and a cool down condition for safety of the tank 20 can be easily obtained.

2 is a view schematically showing a structure of a supporter according to an embodiment of the present invention.

2, the supporter 30 includes a rail 32 provided at an inner lower portion of the closed vessel 10, a guide 34 provided at an upper portion of the rail 32 for supporting the low temperature gas storage tank 20, And a ball bearing 36 provided between the rail 32 and the guide 34 so that the guide 34 is slidably moved.

The lower side of the rail 32 can be fixed to the fixing member 35 by the rail fixing pin 39. [ The upper side of the rail 32 is provided with a guide 34 and a ball bearing 36 is provided between the upper side of the rail 32 and the guide 34. The guide 34 supports the low temperature gas storage tank 20 and the low temperature gas storage tank 20 can be slidably moved as the guide 34 slides on the rail 32. In addition, by minimizing the contact surface of the ball bearing 36 with the upper side guide 34, it is possible to suppress the heat of the storage tank 20 from being transmitted to the lower side as much as possible.

A ball bearing 36 may be installed on the rail 32 so that the low temperature gas storage tank 20 can be easily inserted into and pulled out from a forklift or other transportation means and a stopper City) can be installed.

The upper insulating material 37 may be further provided between the guide 34 and the low temperature gas storage tank 20 and the lower insulating material 38 may further be provided between the holding member 35 and the closed container 10. [ . The upper insulation material 37 and the lower insulation material 38 are provided to a sufficient thickness to minimize the heat transfer of the low temperature gas storage tank 20. [

The upper heat insulating material 37 and the lower heat insulating material 38 can be formed in a trapezoidal shape in a cross section to ensure structural stability.

The upper heat insulating material 37 and the lower heat insulating material 38 may be those having a small thermal conductivity or may be made of porous material having numerous air layers formed of a material having a low thermal conductivity. For example, the upper insulation material 37 and the lower insulation material 38 may be formed of an organic material such as cork, cotton, felt, carbonized cork, foam rubber or the like or asbestos, glass fiber, quartz, diatomaceous earth, magnesium carbonate powder, magnesia powder, calcium silicate , Pearlite and the like can be used.

As described above, according to the low-temperature gas storage tank simulation test apparatus according to the embodiment of the present invention, the degree of deformation of the tank according to the position is repetitively reproduced according to whether the low-temperature liquefied gas is filled in the tank, Can be confirmed.

In addition, it is possible to secure the insulation reliability safety of the tank through evaluation of the heat penetration amount of the tank, and to freely set the thermal insulation condition of the tank, and it is possible to evaluate and secure the integrity of the tank under various conditions.

Particularly, it is possible to secure the structural design safety of the tank under harsh conditions, thereby contributing to enhancement of the safety of the tank

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. As will be understood by those skilled in the art. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: Low temperature gas storage tank simulation test equipment
10: sealed vessel 20: low temperature gas storage tank
30: supporter 40: measuring sensor
50: Measuring device

Claims (9)

A hermetically sealed container having an interior formed in a vacuum;
A low temperature gas storage tank connected to the LNG exhaust device for exhausting the LNG from the LNG supply device, the LNG supply device being installed in the closed container and supplying LNG to the inside of the closed container;
A supporter for supporting the low-temperature gas storage tank in the closed vessel;
A plurality of measurement sensors installed inside the low temperature gas storage tank; And
And a measuring device for monitoring the information sensed by the measuring sensor with quantified data,
The supporter includes:
A rail provided on an inner lower portion of the hermetically sealed container;
A guide provided on the rail and supporting the low-temperature gas storage tank; And
And a ball bearing provided between the rail and the guide such that the guide is slidably moved. The method of claim 1,
The closed container is a low temperature gas storage tank simulation tester in which the degree of vacuum inside is controlled by a vacuum pump, a vacuum exhaust device, and a vacuum control device to maintain the heat insulation. The method of claim 1,
Wherein the closed vessel is formed in a spherical shape. The method of claim 1,
In the closed container,
Wherein the low-temperature gas storage tank is provided with a swing-type door through which the low-temperature gas storage tank can enter and exit. delete The method of claim 1,
The supporter includes:
Further comprising an upper insulation disposed between the guide and the low temperature gas storage tank. The method of claim 6,
The supporter includes:
Further comprising a lower thermal insulator provided between the rail and the sealed thermal insulating container. 8. The method of claim 7,
Wherein the upper and lower thermal insulators are trapezoidal in cross section. The method of claim 1,
Wherein the measurement sensor comprises:
Temperature gas storage tank simulating apparatus for measuring temperature, pressure, displacement, gas level, gas volume and strain of a low temperature gas storage tank.
KR1020150186280A 2015-12-24 2015-12-24 Simulation device of low temperature gas storage tank KR101739871B1 (en)

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KR1020150186280A KR101739871B1 (en) 2015-12-24 2015-12-24 Simulation device of low temperature gas storage tank

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Application Number Priority Date Filing Date Title
KR1020150186280A KR101739871B1 (en) 2015-12-24 2015-12-24 Simulation device of low temperature gas storage tank

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KR101739871B1 true KR101739871B1 (en) 2017-05-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107654789A (en) * 2017-11-13 2018-02-02 西南石油大学 A kind of analogy method of long oil/gas pipe line dimension repairing process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107654789A (en) * 2017-11-13 2018-02-02 西南石油大学 A kind of analogy method of long oil/gas pipe line dimension repairing process
CN107654789B (en) * 2017-11-13 2020-05-19 西南石油大学 Simulation method for maintenance and first-aid repair process of long-distance oil and gas pipeline

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