Ultrasonic gas or cluter injector

Abstract

A loading device for nuclear plant is composed by a valve part which is fixed to the flange on the pipe of the circulation vacuum chamber and is of a gas rejection valve with Laval nozzle, the gas rejection valve is linked to high pressure gas pipe and with liquid nitrogen cooling trap to outside then a magnetic screen. The injector prevents injected particles disperse and increase the injected amount and depth, so to increase plasma density and improve its inhibition character.

Description

technical field [0001] The invention relates to a feeding device of a nuclear fusion device. Background technique [0002] Conventional gas injection technology is widely used in the plasma feeding of existing nuclear fusion experimental devices. The technical measure is that high-pressure gas (air pressure is about 0.2 MPa) is continuously or pulsed into the vacuum chamber of nuclear fusion experimental devices through piezoelectric crystal valves. Used to create an initial plasma or increase the density of a plasma. There are some difficulties in increasing the plasma density with the conventional gas injection method. The existing problems are that the gas particle orientation speed is low, the divergence angle is large, and it can only be deposited in the radiation area at the edge of the plasma. The particle injection depth is only 3 to 4cm, and the feeding efficiency is low. About 15% to 30%. As the background plasma density increases, the feeding efficiency becomes ...

AI Technical Summary

Problems solved by technology

There are some difficulties in increasing the plasma density with the conventional gas injection method. The existing problems are that the gas particle orientation speed is low, the divergence angle is large, and it can only be deposited in the radiation area at the edge of the plasma. The particle injection depth is only 3 to 4cm, and the feeding efficiency is low. About 15% to 30%

The piezoelectric crystal valve used in this feeding form inputs gas through the deformation of the piezoelectric crystal valve plate through an external voltage. The shape of the valve outlet is a straight tube type, and the jetted gas particles have a large divergence angle and a low directional velocity; this kind of valve The structure of the nozzle limits the improvement of the shape of the nozzle, so that it cannot operate under high pressure conditions, and the gas pressure usually used is lower than 0.2MPa

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