High voltage suspended grid control electron gun power supply unit
A grid control and suspension technology, applied in the direction of output power conversion devices, electrical components, etc., can solve the problems of difficult precise control of electron beam current intensity and energy, inconvenient debugging and maintenance, and low adjustment accuracy. Electromagnetic interference problem, solution to electrical isolation problem, effect of safety control
Active Publication Date: 2016-03-09
SHANDONG LANFU HIGH ENERGY PHYSICS TECH CO LTD
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Problems solved by technology
Diode electron gun has the characteristics of simple structure, convenient control, and easy debugging, but the intensity and energy of the emitted electron beam are not easy to control accurately, and some applications that require precise control of electron beam energy are limited.
Although this method, to a certain extent, can realize the electrical isolation between the adjustment control terminal and the high voltage of the electron gun, and also achieves the purpose of controlling the grid control power supply voltage, it cannot fundamentally eliminate the risk of electric shock. Pulse electromagnetic interference, debugging and maintenance are very inconvenient, and the adjustment accuracy is not high
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[0017] In order to clearly illustrate the technical features of the solution, the solution will be described below through a specific implementation mode combined with the accompanying drawings.
[0018] The high-voltage suspension grid-controlled electron gun power supply device of the present invention includes a grid-controlled power supply circuit module and a low-voltage control circuit module, and an optical fiber isolator is arranged between the grid-controlled power supply circuit module and the low-voltage control circuit module. The grid-controlled power supply circuit module includes a high-voltage isolation transformer, a rectifier filter unit, a voltage adjustment tube, a power output MOS tube, and a grid-controlled power supply connected in sequence; the voltage adjustment tube and the optical fiber isolator are connected with each other A voltage regulating unit, F-V conversion circuit 1; a synchronous trigger signal processing circuit is connected between the po...
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The invention relates to a high-voltage suspension type grid control electronic gun power supply device. Optical fiber isolations are disposed between a grid control power supply circuit and a low-voltage control circuit. The problems of electric isolation between cathode high voltage and low-voltage control of an electronic gun and electromagnetic interference are solved. By the optical fiber isolations, the low-voltage control circuit is thoroughly isolated from the low-voltage control circuit, frequency change of light beam on and off is converted into adjusting voltage of a grid control power supply so as to precisely control voltage output of the grid control power supply, and smooth, accurate and safe control of voltage of the grid control power supply is achieved. The low-voltage control circuit controls light beam on-off frequency in optical fibers, the light beam frequency signals are converted into control voltage in the grid control power supply circuit so as to control and change the output voltage of the grid control power supply, and beam intensity of electronic beams is changed.
Description
technical field [0001] The invention relates to a power supply device, in particular to a high-voltage floating grid-controlled electron gun power supply device. Background technique [0002] The irradiation electron accelerator is the core equipment of the irradiation processing industry. The high-energy electron beam irradiation produced by the electron accelerator can cause some substances to produce physical, chemical and biological effects, and can effectively kill germs, viruses and pests. Electron irradiation has the characteristics of normal temperature, no damage, no residual toxicity, environmental protection, low energy consumption, simple operation, high degree of automation, and is suitable for large-scale industrial production. This technology has been widely used in material modification, new material production, environmental protection, processing and production, sterilization and disinfection of medical and sanitary products, and food sterilization and pres...
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IPC IPC(8): H02M1/092H02M1/44
Inventor 黄忠义位同厦沈松王文兵巩新胜徐建慧吕荣伟陈光荣
Owner SHANDONG LANFU HIGH ENERGY PHYSICS TECH CO LTD