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Salt distribution system for high-temperature molten salt storage tank

A high-temperature molten salt storage tank and molten salt technology, applied in the field of heat storage systems, can solve problems such as leakage accidents, uneven temperature distribution of molten salt, stress cracking at the tank bottom and tank wall welds, etc., to reduce thermal shock, The effect of avoiding stress cracking and solving the uneven temperature distribution of molten salt

Pending Publication Date: 2020-10-02
HARBIN TURBINE AUX EQUIP ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem of leakage accidents caused by stress cracking at the tank bottom and tank wall welds due to the uneven distribution of molten salt temperature and the vertical temperature gradient in the existing salt distributing device for molten salt storage tanks.

Method used

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  • Salt distribution system for high-temperature molten salt storage tank
  • Salt distribution system for high-temperature molten salt storage tank
  • Salt distribution system for high-temperature molten salt storage tank

Examples

Experimental program
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specific Embodiment approach 1

[0019] Specific implementation mode one: combine Figure 1 to Figure 11 To illustrate this embodiment, a salt distribution system for a high-temperature molten salt storage tank includes a tank bottom molten salt distribution ring 1, a vertical pipe section 2, a tank bottom support 3, a tank top connection structure 6, a nozzle 5 and multiple tank wall supports 4, The vertical pipe section 2 is vertically installed in the tank body 7 through a plurality of tank wall supports 4 arranged in sequence from top to bottom. The upper end of the vertical pipe section 2 is connected to the tank body 7 through the tank roof connection structure 6, and the molten salt distribution at the bottom of the tank The ring 1 is installed in the tank body 7 through the tank bottom support 3, and the tank bottom molten salt distribution ring 1 is connected with the vertical pipe section 2, the tank bottom molten salt distribution ring 1 is an octagonal ring, and the tank bottom molten salt distribu...

specific Embodiment approach 2

[0023] Specific implementation mode two: combination figure 1 and figure 2 To describe this embodiment, the tank bottom molten salt distribution ring 1 of this embodiment is a regular octagonal ring. With such arrangement, it is convenient to evenly distribute the molten salt into the whole tank body. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Specific implementation mode three: combination figure 2 To illustrate this embodiment, the tank bottom molten salt distribution ring 1 of this embodiment includes a tee pipe 1-4, a plurality of straight pipe sections 1-1, a vertical section connection elbow 1-5, and a plurality of distribution ring connection elbows 1 -2 and multiple nozzle connecting flanges 1-3, the horizontal section of the tee pipe 1-4 and multiple straight pipe sections 1-1 are sequentially connected through multiple distribution rings to connect elbows 1-2 to form an annular pipe body At least one nozzle adapter flange 1-3 is installed on each straight pipe section 1-1, and the vertical section of the tee pipe 1-4 is connected to the vertical pipe section 2 through a vertical section connecting elbow 1-5. With such an arrangement, the structure is simple, and it is convenient for manufacture and connection, especially, it can form a ring shape, which provides convenient conditions for realizing ...

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Abstract

The invention discloses a salt distribution system for a high-temperature molten salt storage tank, and relates to a salt distribution system. The problems that according to an existing salt distribution device for the molten salt storage tank, due to the fact that molten salt temperature distribution is not uniform and vertical temperature gradients are generated, stress cracking exists at weld joints of a tank bottom and a tank wall, and leakage accidents are caused are solved. A vertical pipe section is vertically installed in a tank body through a plurality of tank wall supports sequentially arranged from top to bottom, the upper end of the vertical pipe section is connected with the tank body through a tank top connecting structure, a tank bottom molten salt distribution ring is installed in the tank body through the tank bottom supports, the tank bottom molten salt distribution ring is connected with the vertical pipe section, the tank bottom molten salt distribution ring is an octagonal circular ring, a plurality of nozzles are installed on the tank bottom molten salt distribution ring in the circumferential direction, included angles are formed between the nozzles and the edges of the octagonal circular ring correspondingly, and the directions of spouts of every two adjacent nozzles are opposite. The system is used for salt distribution of the high-temperature molten salt storage tank.

Description

technical field [0001] The invention relates to a heat storage system using hot molten salt as a heat storage medium, in particular to a high-temperature molten salt storage tank salt distribution system, which is used for large-scale molten salt storage tanks for tank-type and tower-type photothermal power generation heat storage systems system. Background technique [0002] Solar thermal power generation technology is a hot direction of solar energy utilization in recent years, especially solar trough and tower thermal power generation technologies including energy storage devices have become an important form of renewable energy for uninterrupted power supply of photothermal power stations. Salt is used as a medium to store solar energy in the form of heat energy, and the stored energy is used to maintain the normal operation of the system in the morning and evening or between clouds. The heat storage system is an indispensable part of the solar thermal power station, an...

Claims

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Application Information

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IPC IPC(8): B65D90/12B65D90/00
CPCB65D90/12B65D90/00
Inventor 陈丽君姜晓霞赵宇炜姚亮崔艳艳
Owner HARBIN TURBINE AUX EQUIP ENG
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