Gas-liquid two-phase separation type gravity assisted heat pipe solar boiler

Abstract

The invention discloses a vapor-liquid phase separation type gravity heat pipe solar boiler, which comprises a water pump, a first bracket, a drum, a metal flexible pipe, a heat pipe type solar evaporator, a bucket, a condenser, a controlling valve, a one way valve and a solar optical collector; the upper end of the first bracket is provided with the drum which is connected with the heat pipe type solar evaporator by the metal flexible pipe so as to form the vapor-liquid phase separation type gravity heat pipe, the drum is connected with the condenser by the one way valve through the controlling valve, the water pump is connected with the drum, and the position corresponding to the heat pipe type solar evaporator is provided with the solar optical collector which is driven by a hydraulic device for tracking the sun. The solar boiler adopts the solar optical collector for focusing the sunlight to the evaporation section of a loop type heat pipe so as to generate heat and adopts the characteristic of high-efficiency heat transmission of the loop type gravity heat pipe for transmitting the heat into the boiler so as to carry out heat exchange with the water in the boiler and generate medium and high temperature saturated vapor; and the boiler has high system efficiency, is not easy for scale formation, is simple and can operate with high efficiency for a long time.

Description

Technical field [0001] The invention relates to a solar boiler, in particular to a vapor-liquid two-phase separation type gravity heat pipe solar boiler. Background technique [0002] In foreign countries, the use of solar energy to generate medium and high temperature steam mostly uses direct steam generation (DSG, directosteam generation) technology, which is the direct use of high temperature and high pressure steam generated in the receiver of the solar concentrator for various industrial purposes. Rely on a pump to supplement the working medium in the receiver and circulate the working medium in the system. However, the system has the following problems: (1) The temperature of the working fluid in the evaporation section from the inlet to the outlet is very different, which causes the evaporation tube to be twisted and deformed, which is a severe test for the reliable operation of the system for a long time; (2) At the same time, the pipeline Internal fouling is also a very ...

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Problems solved by technology

However, the system has the following problems: (1) Due to the large temperature difference of the working fluid in the evaporation section from the inlet to the outlet pipe, the evaporation pipe is distorted and deformed, which is a severe test for the long-term reliable operation of the system; (2) At the same time, the pipeline Internal fouling is also a very difficult problem to solve; (3) In order to prevent the temperature of the generated steam from being too high to meet the requirements, feedback devices and control devices must be used. Such a system structure is very complicated, which is especially important for the system. Pump reliability places very high demands

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