A large-diameter steel-UHPC composite high-temperature molten salt storage tank and its construction method

The design of a high-temperature molten salt storage tank with a large-diameter steel-UHPC composite structure solves the problems of high processing difficulty of steel plates and high cost of thermal insulation materials in existing technologies, thereby reducing engineering costs and improving the stability of the storage tank.

CN117418732BActive Publication Date: 2026-07-17XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Filing Date
2023-12-01
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing high-temperature molten salt storage tanks suffer from problems such as difficult steel plate processing, large steel consumption, and high cost of thermal insulation materials.

Method used

It adopts a large-diameter steel-UHPC composite structure, including an annular steel plate tank body, tank top cover plate and tank bottom cover plate. The outer wall is equipped with perforated ribs and cast with ultra-high performance concrete shell. The tank top and tank bottom cover plates adopt steel plate-honeycomb steel-concrete composite plate. All steel components are produced in the factory in a standardized manner, and then welded and cast with concrete on site.

Benefits of technology

It significantly reduces engineering construction costs, improves the stability and seismic performance of molten salt storage tanks, reduces the difficulty of steel plate processing, lowers material costs, and enhances load-bearing capacity and overall rigidity.

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Abstract

A large-diameter steel-UHPC composite high-temperature molten salt storage tank includes an annular steel plate tank body, a top cover plate, and a bottom cover plate. The annular steel plate tank body has a diameter of not less than 40 μm, and its outer wall is provided with perforated ribs and a cast concrete shell. The surface of the perforated ribs is perpendicular to the outer wall of the annular steel plate tank body, and multiple pre-drilled holes are distributed on the surface of the ribs. The concrete shell is made of ultra-high performance concrete. Both the top and bottom cover plates consist of circular steel plates. The side of the circular steel plate away from the annular steel plate tank body is provided with honeycomb steel and a cast concrete slab. This invention uses a steel plate-concrete composite structure tank body, where the annular steel plate and UHPC share the load, resulting in advantages such as high load-bearing capacity, high rigidity, and good stability. It can effectively reduce the thickness of the steel plate and the processing difficulty. The use of honeycomb steel for the top and bottom cover plates reduces material costs. The use of UHPC concrete provides good thermal insulation and heat resistance, eliminating the need for thermal insulation materials and significantly reducing construction costs.
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