Flexible supporting device for pump pipe of film type LNG land storage tank

Abstract

The invention discloses a flexible supporting device for a pump pipe of a film type LNG land storage tank. The device comprises a bottom plate, a top plate, embedded parts, fastening bolts, a supporting part, a connecting plate, a connecting column and a supporting pipe, each embedded part is of a plate-shaped structure with threaded holes, the two embedded parts are pre-embedded in one side, close to the inner tank, of the outer tank, one end of the supporting part is welded on the bottom plate, the other end is welded on the top plate, mounting holes matched with the threaded holes are formed in the bottom plate, the bottom plate is fixed to the outer tank through the fastening bolts, the connecting plate is welded to the top plate, a kidney-shaped hole is vertically formed in the connecting plate, the connecting column is arranged in the kidney-shaped hole, one end of the supporting pipe is fixedly connected to the connecting column, and the other end of the supporting pipe is fixedly connected to a pump pipe. Pump tower limiting is optimized into pump pipe distributed limiting, the manufacturing difficulty and the manufacturing cost are greatly reduced, the weight is greatly reduced, and transportation and installation are convenient.

Description

technical field [0001] The invention belongs to the technical field of liquefied natural gas storage and transportation equipment, and in particular relates to a flexible support device for a pump pipe of a film-type LNG land storage tank. Background technique [0002] In recent years, with the global warming and the intensification of environmental pollution, countries around the world have begun to accelerate the promotion of low-carbon clean energy policies. New energy vehicles, clean electricity and low emissions from ships have become new trends in energy consumption today. As a clean, efficient and resource-rich energy, natural gas can be developed and utilized by people for a long time. Therefore, it occupies a relatively high proportion of the world's current primary energy consumption, and is the third largest energy variety after oil and coal. With an annual increase of about 12%, natural gas is becoming one of the fastest-growing energy industries in the world. In ...

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Problems solved by technology

[0003] At present, LNG land storage tanks mainly include 9-nickel steel full-capacity tanks and membrane tanks. Among them, membrane-type LNG land storage tanks are a new technology with high volume utilization, but the bottom of the membrane tank cannot bear loads, so the pump tube can only be integrated into a Pump tower, fixed to the top of the tank

Since the pump tube will undergo thermal expansion and contraction deformation when the temperature changes, it is necessary to ensure that the pump tower as a whole can move up and down during installation. However, the pump tube will bear the stress in the horizontal direction when the temperature changes, causing the pump tube to break. Therefore, it is necessary to Set the support limit mechanism to ensure that the pump tower can only move in the vertical direction, and the pump tower is heavy, resulting in very high manufacturing and installation costs for the pump tower

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