Natural circulating tank type solar heat collecting system

Abstract

The invention discloses a natural circulating tank type solar heat collecting system. In the system, a condensing downcomer is connected with an S-shaped bent pipe, a first pipeline rotary connecting valve, a flow control regulating valve, a heat collecting pipe, a metal connecting pipe, a main steam pipe, a second pipeline rotary connecting valve, an ascending tube and a steam heat exchanger in sequence through corrugated connecting pipes; a vacuum extract port is arranged on the tail end of the ascending tube; a hydraulic system, a reflector bracket and a bracket support are connected with a rotating shaft respectively; a reflector surface is arranged on the reflector bracket; the heat collecting pipe and a light intensity sensor are connected with the reflector bracket through a heat collecting pipe support; the first pipeline rotary connecting valve, the second pipeline rotary connecting valve and the S-shaped bent pipe are connected with a pipeline rotating pedestal support, and are then coaxially fixed on the bracket support with the rotating shaft; a rotary pipeline top support is fixed on the end of the reflector bracket; the steam heat exchanger is arranged on an iron tower; and the system is controlled by a control system. By introducing natural circulation and adopting efficient and novel connection and control mode, the system efficiency and stability can be improved.

Description

technical field [0001] The invention relates to a solar energy utilization device, in particular to a natural circulation trough type solar heat collection system device. Background technique [0002] Trough solar technology is the most mature and commercialized technology in current solar thermal utilization technology. As the current commercialized solar thermal power generation technology, the trough solar power generation technology has achieved tremendous development since the first commercialized operation project in the 1980s. At present, my country is also gradually carrying out the construction of commercial demonstration projects of trough solar thermal power generation. [0003] The current trough solar heat collection system mostly adopts forced circulation, that is, relying on high temperature and high pressure pumps to provide the power for the system heat exchange working medium to flow in the tube. Due to the high temperature and pressure in the heat colle...

AI Technical Summary

Problems solved by technology

Due to the use of metal hoses and flanges in the system, the flow resistance and heat dissipation loss of the system are relatively large. At the same time, the system cannot effectively control the flow rate, and the system cannot feedback and adjust the tracking accuracy in a timely manner. Therefore, the system is reducing resistance and heat dissipation loss. There is still room for further improvement and improvement in the adjustment of the spotlight progress

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