Novel photo-thermal power generation fused salt valve capable of avoiding residues

Abstract

The invention discloses a novel photo-thermal power generation fused salt valve capable of avoiding residues. The novel photo-thermal power generation fused salt valve is a Y-shaped valve and comprises a valve body, a valve rod, a support, a hand wheel, a medium inlet channel and a medium outlet channel. The valve body and the support are integrally formed and integrally forged. A valve rod cavity is formed in the valve body, the valve rod extends into the valve rod cavity and is sleeved with a corrugated pipe in an embedded manner, and the corrugated pipe is located in the valve rod cavity. A packing box is arranged above the corrugated pipe, the valve rod is sleeved with the packing box in an embedded manner, a packing ring is placed in the packing box and is tightly pressed through a packing gland above the packing ring, and the packing gland is connected with the valve body through a bolt. The angle alpha formed between the medium inlet channel and the horizontal plane ranges from 10 degrees to 20 degrees, and the angle beta formed between the medium outlet channel and the horizontal plane ranges from 10 degrees to 20 degrees. The fused salt valve is simple in structure, good in sealing performance and convenient and rapid to operate; during work, no leakage happens, safety and reliability are achieved, and the service life is longer; and when a fused salt system stops operating, the situation that due to the fact that fused salt is left and solidified in the valve, the valve is blocked is avoided.

Description

technical field [0001] The invention relates to the field of heat utilization of high-temperature molten salt, in particular to a novel photothermal power generation molten salt valve for anti-residue. Background technique [0002] As a heat transfer and storage medium with high heat capacity, molten salt has received extensive attention. As a heat transfer medium with better performance, its working temperature can reach 560 degrees Celsius. Media can not be compared. Molten salt is a low-cost, long-life, good heat transfer performance high temperature (greater than 500 ° C), high heat flux (greater than 105W / m2) and low pressure (<2bar) heat transfer medium, which makes it in industrial applications There are great advantages. Studies have shown that the use of high-temperature nitric acid molten salt for power generation can increase the operating temperature of solar power plants to 450-600°C, thus increasing the power generation efficiency of steam turbines to 40%....

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new type of solar thermal power generation molten salt valve with simple structure, good sealing performance and anti-residue, so as to solve the problem that the high melting point of molten salt used in solar thermal power generation is easy to crystallize in the valve, causing valve blockage, Inconvenient operation and easy leakage

Images