KR-20260065637-A - INNER TANK SUPPORT INSTALLED IN DOUBLE LAYERED INSULATED VACUUM TANK AND A DOUBLE LAYERED INSULATED VACUUM TANK COMPRISING THE SAME

KR20260065637AKR 20260065637 AKR20260065637 AKR 20260065637AKR-20260065637-A

Abstract

An inner tank support installed in a double-insulated vacuum tank is provided. The inner tank support comprises a plurality of outer tank supports installed on the inner surface of the outer tank of the double-insulated vacuum tank, and a plurality of inner tank supports installed on the outer surface of the inner tank, which is positioned at a predetermined distance from the outer tank toward the center of the double-insulated vacuum tank, and which are each coupled to the plurality of outer tank supports. The at least one pair of outer tank supports among the plurality of outer tank supports and the at least one pair of inner tank supports among the plurality coupled thereto may be characterized in that the coupling line in each cross-section is inclined by a predetermined angle from the horizontal direction.

Inventors

허행성
유병문
황범석
박광준

Assignees

한화오션 주식회사

Dates

Publication Date: 20260511
Application Date: 20241030

Claims (7)

A plurality of outer tank supports installed on the inner surface of the outer tank of a double-insulated vacuum tank; and A plurality of inner tank supports installed on the outer surface of an inner tank, which is positioned at a predetermined distance from the outer tank in the direction of the center of the double-insulated vacuum tank, and each of which is coupled to a plurality of the outer tank supports; At least one pair of the plurality of the above-mentioned outer supports and at least one pair of the plurality of the above-mentioned inner supports coupled thereto are, Characterized by being installed such that the connecting line is inclined from the horizontal direction by a preset angle in each cross-section. Internal tank support.
In claim 1, At least one pair of the outer tank supports, which are installed such that the connecting line in the cross-section is inclined by a predetermined angle from the horizontal direction, are installed on the inner circumference of the outer tank at positions facing each other in the horizontal direction, and At least one pair of the inner tank supports, installed such that the connecting line in the cross-section is inclined by a predetermined angle from the horizontal direction, are installed at positions facing each other in the horizontal direction on the outer surface of the inner tank. Internal tank support.
In claim 1, At least one pair of the outer supports and at least one pair of the inner supports, which are installed such that the connecting line in the cross-section is inclined by a predetermined angle from the horizontal direction, Characterized by the fact that the connecting line is installed so as to face the lower part of the center of the inner tank in the cross-section. Internal tank support.
In claim 1, The outer tank support installed on the upper or lower part of the inner surface of the outer tank and the inner tank support installed on the upper or lower part of the outer surface of the inner tank, each coupled thereto, are. Characterized by being installed such that the connecting line is parallel to the vertical direction in each cross-section, Internal tank support.
In claim 1, Characterized that when thermal shrinkage occurs in the inner tank, the travel distance of the inner support installed at the bottom of the inner tank is shorter than the travel distance of the inner support installed at the top of the inner tank. Internal tank support.
In a double-insulated vacuum tank for storing fluid, When thermal shrinkage occurs in the inner tank, the increase in volume of the vacuum insulation space between the inner tank and the outer tank is characterized in that the increase in volume at the bottom of the outer tank is smaller than the increase in volume at the top of the outer tank. Double-walled vacuum tank.
In claim 6, A plurality of outer tank supports installed on the inner surface of the above outer tank; and A plurality of inner tank supports installed on the outer surface of the inner tank and each coupled to a plurality of the outer tank supports; At least one pair of the plurality of the above-mentioned outer supports and at least one pair of the plurality of the above-mentioned inner supports coupled thereto are, Characterized by being installed such that the connecting line is inclined from the horizontal direction by a preset angle in each cross-section. Double-walled vacuum tank.

Description

Inner tank support installed in a double-layered insulated vacuum tank and a double-layered insulated vacuum tank comprising the same The present invention relates to an inner tank support installed in a double-insulated vacuum tank for storing cryogenic fluids such as liquid hydrogen, and a double-insulated vacuum tank including the same. More specifically, the invention relates to an inner tank support that reduces the settling phenomenon of insulation powder occurring during the operation of a double-insulated vacuum tank, and a double-insulated vacuum tank including the same. With increasing global interest in greenhouse gas and air pollutant emissions and the rapid tightening of international environmental regulatory standards, research on transportation technologies for eco-friendly energy, such as hydrogen, is actively being conducted in ships. Hydrogen transportation can be broadly classified into inland and maritime transport. Inland transport is possible using pipelines, dedicated vehicles equipped with storage facilities, or railways, while maritime transport is possible using floating structures such as vessels equipped with storage facilities. Until recently, hydrogen has been supplied and utilized on a small scale by compressing it to over 200 bar, storing it in special containers, and transporting it. However, for efficient transportation, it should be considered to store and transport hydrogen in a liquid state obtained by cooling and pressurizing gaseous hydrogen. Liquid hydrogen can be obtained by cooling gaseous hydrogen to a cryogenic state (-253 degrees Celsius at atmospheric pressure) and can be stored and transported in a liquid state by storing it in a special cryogenic insulated storage tank. However, special cryogenic insulation tanks generally form a vacuum by filling insulation powder between the double insulation layers of a double insulation tank. However, due to the increase in the vacuum insulation space caused by the self-weight, movement of the ship, and thermal contraction of the inner tank, the settlement of the insulation powder occurs, and the resulting thermal loss of the insulation tank is becoming a practical problem. Accordingly, there is a demand for an inner tank support capable of reducing the settling phenomenon of insulation powder during the operation of a double-insulated vacuum tank, and for a double-insulated vacuum tank including the same. FIG. 1 is a cross-sectional view showing a double-insulated vacuum tank including a conventional inner tank support. FIG. 2 is a cross-sectional view showing a conventional inner tank support. FIG. 3 is a diagram showing the operating state of a double-insulated tank including a conventional inner tank support. FIG. 4 is a cross-sectional view showing a double-insulated vacuum tank including an inner tank support according to the present embodiment. FIG. 5 is a cross-sectional view showing an inner tank support according to the present embodiment. FIG. 6 is a diagram showing the operating state of a double-insulated vacuum tank including an inner tank support according to the present embodiment. In order to fully understand the present invention, the operational advantages of the present invention, and the objectives achieved by the implementation of the present invention, reference must be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings. The present invention will be described in detail below by explaining preferred embodiments of the invention with reference to the attached drawings. Identical reference numerals in each drawing indicate identical components. In this specification, singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, when the double-insulated vacuum tank is formed in a spherical shape, the circumferential direction refers to a direction parallel to an imaginary line extending along the perimeter of the double-insulated vacuum tank. In this specification, when a double-insulated vacuum tank is formed in a spherical shape, the radial direction refers to a direction parallel to an imaginary line extending from the center inside the double-insulated vacuum tank to the outside of the double-insulated vacuum tank. In this specification, when a double-insulated vacuum tank is formed in a cylindrical shape, the cylinder of the double-insulated vacuum tank refers to the part forming the body of the double-insulated vacuum tank. In this specification, when a double-insulated vacuum tank is formed in a cylindrical shape, the head of the double-insulated vacuum tank refers to a portion formed in a semi-spherical shape on each side of the cylinder of the double-insulated vacuum tank. In this specification, when a double-insulated vacuum tank is formed in a cylindrical shape, the longitudinal direction refers to a direction parallel to an imaginary lin