A small lng storage tank welding anti-deformation device and method
A technology for anti-deformation and storage tanks, which is applied in auxiliary devices, welding equipment, welding equipment, etc., can solve the problem that the shape difference between the cylinder body and the head cannot be assembled and welded, and achieve the effect of controlling thermal expansion deformation, easy implementation, and remarkable effect
Active Publication Date: 2016-03-09
WUHAN YIYE STEEL STRUCTURE
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a small LNG storage tank welding anti-deformation device and method for the above existing problems, which can effectively control the thermal expansion deformation generated when the reinforcement rib of the small LNG storage tank is welded, and greatly improve the storage capacity. The production quality of the tank has successfully solved the problem that the shape gap between the cylinder body and the head is too large to be assembled and welded
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[0015] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] Such as figure 1 , 2 As shown, several reinforcing ribs 3 are equidistantly welded on the inner wall of the small LNG storage tank 1, and the welding anti-deformation device 2 is installed on the outer surface of the small LNG storage tank, corresponding to the welding position of the internal reinforcing ribs. The welding anti-deformation device includes setting The annular rib 4 on the outer surface of the small LNG storage tank 1, the annular rib is composed of two semicircular ribs 6, the inner diameter of the two semicircular ribs is equal to the outer diameter of the small LNG storage tank, The ends on both sides of the two semicircular ribs are connected by a connecting assembly 5, and both the annular ribs and the connecting assembly are made of stainless steel.
[0017] Such as ima...
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Abstract
The invention provides a deformation preventing device and method for welding of a small LNG storage tank. The device comprises a circular-ring-shaped rib plate arranged on the outer surface of the small LNG storage tank. The circular-ring-shaped rib plate is composed of two semicircular rib plates, the inner diameter of the two semicircular rib plates is equal to the outer diameter of the small LNG storage tank, the ends of the two sides of the two semicircular rib plates are connected through connecting assemblies, and the circular-ring-shaped rib plate can be fastened to the outer surface of a barrel by adjusting the pretightening force of the connecting assemblies. The device is simple in structure, low in cost and easy to install and can effectively restrain thermal expansion deformation generated in the welding process of the small LNG storage tank.
Description
technical field [0001] The invention belongs to the technical field of LNG storage tanks, and in particular relates to a small-sized LNG storage tank welding anti-deformation device and method. Background technique [0002] The LNG double-layer storage tank is composed of a stainless steel inner tank and an outer tank. The inner tank is suspended and nested inside the outer tank. . The reinforcing ribs are made of stainless steel angle steel, and are welded to the inner wall of the cylinder at intervals to achieve the effect of increasing the rigidity of the cylinder. Due to the thin cylinder (thickness 6-8mm), when stainless steel is welded, the cylinder at the welded part will have a large thermal expansion deformation, and the shape and size error after welding will be very large, which will affect the fitting and final fit between the inner and outer tanks. Vacuum insulation. Therefore, a device must be used to constrain the cylinder to control the amount of deformati...
Claims
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IPC IPC(8): B23K37/00
CPCB23K31/003B23K2101/125
Inventor 黄金祥杨国强潘伍覃夏巍
Owner WUHAN YIYE STEEL STRUCTURE