Tank top structure of low-temperature storage tank
A low-temperature storage tank and tank top technology, applied in fixed-capacity gas storage tanks, gas/liquid distribution and storage, pressure vessels, etc., can solve the problems of poor thermal insulation performance and poor economy, and achieve good thermal insulation performance and good economy. Effect
Pending Publication Date: 2019-09-06
ZHEJIANG ZHENSHEN INSULATION TECH CORP
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Problems solved by technology
[0004] In order to overcome the disadvantages of poor thermal insulation performance and poor economical efficiency of existing low-temperature storage tanks, the present invention provides a roof structure for low-temperature storage tanks with good thermal insulation performance and good economical efficiency
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Embodiment 1
[0031]The tank wall is made of 500 mm thick ZES500 foam glass as insulation, the top of the insulation is filled with foam glass, leveled with pressure-bearing horseshoe ester, and a circle of 5-layer plywood with a thickness of 12 mm and a width of 500 mm is laid along the top of the insulation. There are 3 mm deep grooves at both ends of the surface, 50 mm long and the same width as the plywood. At the end of the outer tank wall, a 3 mm thick "L" type stainless steel is used to anchor in the groove of the plywood on one side and on the outer tank wall on the other side. ; The other end is made of 3 mm thick "L"-shaped stainless steel, one side is lap welded with the inner tank film, and the other side is anchored in the groove of the plywood. Use low-temperature glue to lay down the CAC composite film along the outer tank wall. On the outer tank wall, the initial laying point of the CAC composite film is 300mm higher than the "L"-shaped stainless steel. After laying on the pl...
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The invention discloses a tank top structure of a low-temperature storage tank. The tank top part of the low-temperature storage tank structurally comprises a vault, a suspender, a thermal insulationmaterial and a suspended ceiling from top to bottom, wherein the tank wall part structurally comprises a metal inner tank, at least two heat preservation layers and an outer tank from inside to outside, and leveling layers are formed at the ends of the heat preservation layers through plywood. A CAC composite film is pasted downwards along the tank wall of the outer tank and is pasted to the heatpreservation layer, and the CAC composite film is turned to be laid to the metal inner tank along the leveling layer. L-shaped stainless steel plates are fixed to the two ends of the plywood respectively, and the other ends of the L-shaped stainless steel plates are fixed to the inner wall of the outer tank and the metal inner tank respectively. The suspended ceiling is suspended in the metal inner tank through a suspender, a leveling layer at the end of the heat preservation layer is flush with a metal plate on the suspended ceiling truss, the leveling layer is connected with the outer ring of the suspended ceiling truss in a sealed mode through a connecting sealing material, and the connecting sealing material has low-temperature elasticity or has low-temperature shrinkage allowance; thewhole top plane is filled with heat insulation materials. The heat preservation performance is good, and the economical efficiency is good.
Description
technical field [0001] The invention belongs to the field of cryogenic storage tanks, and relates to a tank top structure of a low-temperature storage tank. Background technique [0002] In the field of cryogenic engineering technology, large cryogenic storage tanks are often used to store liquefied gases at low temperature and atmospheric pressure, such as: natural gas, LPG, liquid nitrogen, liquid oxygen, ethylene, propylene, liquid ammonia, etc. This cryogenic storage tank is composed of an inner tank and an outer tank, the inner tank is used to store cryogenic liquid, and the outer tank is used to hold cold insulation materials and evaporated gas. An elastic blanket is fixed outside the inner tank, and perlite is filled between the elastic blanket and the outer tank. The roof of the inner tank is suspended from the vault of the outer tank by means of suspenders. One end of the boom is connected to the support beam of the inner tank roof, and the other end is connected ...
Claims
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IPC IPC(8): F17C1/00F17C1/12
CPCF17C1/00F17C1/12
Inventor 张春华张永福金建兴高海滨
Owner ZHEJIANG ZHENSHEN INSULATION TECH CORP