Harmful gas absorbing device for linear accelerator

Abstract

The invention discloses a harmful gas absorbing device for a linear accelerator. The harmful gas absorbing device comprises an accelerator positioned in a radiation chamber, a moving bed positioned below the accelerator, a centrifugal ventilator positioned at the outdoor roof of the radiation chamber and an air sucking pipeline, wherein the accelerator comprises a scanning window; the air sucking pipeline is of an L shape; an air sucking port is formed at one end of the air sucking pipeline; the air sucking port is just opposite to an electronic beam outlet below the accelerator and is attached to the periphery of the scanning window; and the other end of the air sucking pipeline extends out of the radiation chamber and is connected with the centrifugal ventilator. According to the harmful gas absorbing device disclosed by the invention, the air sucking port is tightly attached to the periphery of the scanning window, and thus harmful gases are directly absorbed from a source head and high absorbing efficiency is obtained; the oxidation for a radiated article by ozone is reduced and the quality of the radiated article is improved; a protecting device is arranged for alarming when no wind exists and is manually operated or linked with the accelerator; and due to the adoption of a telescopic pipeline, a device under the electron beam is convenient to maintain; and in addition, the harmful gas absorbing device has the advantages of small size and occupied space, blowing power and electricity economization, low noise, reduced cost being half of the original cost and increased efficiency by twice.

Description

technical field [0001] The invention relates to an auxiliary device of an accelerator, in particular to a harmful gas absorbing device of a linear accelerator. Background technique [0002] When the linear accelerator is working, the rays (electron beams, X-rays) produced by irradiation are ionized in the air, producing ozone and nitrogen dioxide. The greater the beam power of the linear accelerator, the more harmful gases will be produced during irradiation. , seriously affecting human health. [0003] At present, the conventional method of absorbing the harmful gas produced by the linear accelerator is to use a blower to absorb it. On the one hand, because it is convenient for the maintenance of the device under the accelerator beam, the ventilation pipe absorbing gas pipe is placed in the corner of the irradiation room, far away from the source of the harmful gas, so it cannot Directly absorb harmful gases such as ozone and nitrogen dioxide, causing harmful gases to exce...

AI Technical Summary

Problems solved by technology

As the beam power increases, the temperature of the irradiated object increases, which accelerates the oxidation of the irradiated object and seriously affects the properties of the product, especially for foods with high moisture content. It is also easy to oxidize and change color, which is not easy for users to accept

At the same time, the traditional device for absorbing harmful gas lacks protection devices. Once the suction device fails, the harmful gas will seriously exceed the standard, which will seriously affect human health and product quality; there are also disadvantages such as large volume, high noise, large power and power consumption.

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