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Pneumatic driving high-voltage feed device for vacuum environment

A technology of feeding device and vacuum environment, which is applied in the field of superconducting cyclotron, can solve the problems of high production cost and complex structure of motor drive mode, and achieve the effect of low production cost and simple structure

Pending Publication Date: 2021-05-11
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention proposes a movable external high-voltage power feeding device used in a vacuum environment, aiming to solve the problems of complex structure and high manufacturing cost of the motor drive mode in the prior art

Method used

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  • Pneumatic driving high-voltage feed device for vacuum environment
  • Pneumatic driving high-voltage feed device for vacuum environment

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Experimental program
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Effect test

Embodiment 1

[0043] In order to meet the original design requirements, the feeder can be moved radially by adjusting the cylinder air valve to achieve two states of on and off;

[0044] During normal use, after the accelerator is evacuated, the vacuum environment becomes better, and the vacuum interface of the feeder will generate a relatively large inward suction force due to the external atmospheric pressure. If there is no external force, the feeder will be sucked in, and the internal high-voltage electrodes may be damaged. Driven by a cylinder, the outward pulling force of the cylinder can be maintained at all times to ensure that the feeder is not sucked in, thus protecting the internal electrodes.

[0045] When encountering some emergency situations, such as a sudden failure of the vacuum system, if the high voltage is continued to be applied to the electrode at this time, serious ignition will occur due to the deterioration of the vacuum environment, which will directly damage the e...

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Abstract

The invention provides a pneumatic driving high-voltage feed device for a vacuum environment. One end of the high-voltage feed device extends into an accelerator vacuum pipeline, and the other end of the high-voltage feed device is exposed in the atmosphere. According to the invention, the traditional prejudice is overcome, the action of external force is not thrust but pulling force, and the action of slowly pushing the high-voltage feed device is not external force but adsorption force of the vacuum chamber. The high-voltage feed device is slowly sucked to be in contact with the high-voltage electrode through a method that pulling force exists firstly and then adsorption force exists, and the adsorption force is slightly larger than the pulling force. Different effects brought by this way are that a high-voltage electrode protection device does not need to be additionally arranged, and the feed device is pulled out through the pulling force of the air cylinder to cut off the power supply of the high-voltage electrode by utilizing the effects that the adsorption force is weakened and smaller than the pulling force when the vacuum chamber is damaged. Therefore, the structure is simple and the manufacturing cost is low.

Description

technical field [0001] The invention belongs to the technical field of superconducting cyclotrons, and in particular relates to a movable external high-voltage power feeding device used in a vacuum environment. Background technique [0002] With the advancement of technology, the development of economic base, and the improvement of people's living standards, the demand for proton therapy is becoming more and more extensive. The Institute of Atomic Energy is carrying out the research and development of proton therapy devices, among which a 230MeV superconducting cyclotron will be built. As the core component of the proton therapy device, the accelerator integrates a variety of systems, including main magnet, high frequency, vacuum, ion source, Beam extraction, beam line, treatment device, beam monitoring and control systems. Among them, the deflection system needs to lead a high voltage from the outside of the vacuum environment to the high-voltage electrode inside the vacuu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H7/00H05H13/00A61N5/10
CPCH05H13/005H05H7/00A61N5/10A61N2005/1087
Inventor 刘振威崔涛李明葛涛李世强
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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