A single-phase fluid tube-plate heat absorber circuit

Abstract

The invention discloses a single-phase fluid tube-plate heat absorber loop. Each tube plate is composed of a lower header (1), an upper header (2) and heat absorbing tubes (3). The tops of the heat absorbing tubes (3) communicate with the upper header (2), and the bottoms of the heat absorbing tubes (3) communicate with the lower header (1). The plurality of heat absorbing tubes (3) are arranged in parallel on the same plane and are located in the middles of the tube plates. The heat absorber loop is formed by parallel arrangement of the plurality of tube plates, and connecting pipelines (5) with second check valves (4') and common connecting pipelines (6) are used for communicating the adjacent tube plates and are mounted between the lower headers (1) and between the upper headers (2) of the adjacent tube plates. Valves (7) are mounted on a main inflow pipeline (8), a main outflow pipeline (9) and auxiliary pipelines (10) which are connected with the heat absorber loop.

Description

technical field [0001] The invention relates to a high-temperature heat absorber used in a solar thermal power station, in particular to a circuit of a high-temperature single-phase fluid tube plate heat absorber. Background technique [0002] Solar thermal power generation technology is one of the new energy technologies, which can replace conventional fossil energy to provide clean electricity. Molten salt is currently the most widely used heat transfer and heat storage medium in solar thermal power generation technology. The molten salt does not undergo phase change during the heat absorption process, so the system can operate at normal pressure, and the operating temperature is relatively high. It can provide steam with high parameters and effectively improve the efficiency of the power generation system. Due to the large heat capacity of molten salt, it is also widely used as a heat storage medium, thus reducing the heat exchange link between the heat transfer fluid an...

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Problems solved by technology

[0003] The traditional molten salt heat absorber system has a large number of valves and complex pipeline layout, so the heat dissipation is serious, and the molten salt is likely to be frozen and blocked. The purpose of the present invention is to overcome the shortcomings of the existing heat absorber that uses molten salt as the heat transfer fluid , a single-phase fluid tube-sheet heat absorber circuit is proposed

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