Radiation monitoring device for nuclear power waste gas treatment system
A technology for radiation monitoring and exhaust gas treatment, which is applied in the direction of radiation intensity measurement, etc. It can solve the problems of reduced accuracy of online radiation monitors, malfunction of detectors, lack of high-voltage power supply modules, etc., and achieve the effect of improving safety
Pending Publication Date: 2017-05-31
CNNC NUCLEAR POWER OPERATION MANAGEMENT +1
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Problems solved by technology
The utility model lacks a high-voltage power supply module for powering the detector, and the detector cannot work normally, resulting in a decrease in the accuracy of the online radiation monitor
[0005] Patent 200920204578.3 discloses an online radiation monitor for the waste gas treatment system of a nuclear power plant, including a radiation detector electronic signal processor and a junction box in the main control room. This utility model also lacks a high-voltage power supply module for powering the detector, and the detector cannot work normally. , in addition, the utility model does not involve the alarm function
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[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] Such as figure 1 , figure 2 and image 3 As shown, a radiation monitoring device for a nuclear power waste gas treatment system includes a pulse generator 4, an inlet-side radiation monitoring circuit, and an outlet-side radiation monitoring circuit. The radiation monitoring circuit on the inlet side includes a detector 1, a preamplifier 1, a high-voltage power supply 1, an amplifier / single-channel analyzer 1, and a counting rate meter 1; the radiation monitoring circuit on the outlet side includes a detector 2, a preamplifier 2. High voltage power supply 2, amplifier / single channel analyzer 2, counting rate meter 2 and alarm module.
[0022] For the wiring of nuclear processing equipment on the inlet side, refer to figure 2 :
[0023] The output of detector 1 is connected to TEST of preamplifier 1 through connecting cable C-24-12, the HV ...
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The invention belongs to the technical field of instrument control and maintenance of nuclear power plants, relates to a radiation monitoring device for a nuclear power waste gas treatment system and aims to provide a radiation monitoring device which is simple in structure, high in precision and high in operation reliability and used for the nuclear power waste gas treatment system. The radiation monitoring device is characterized by comprising a pulse generator 4, an inlet side radiation monitoring loop and an outlet side radiation monitoring loop, wherein the pulse generator 4 is a common device of the inlet side and the outlet side and is connected with the inlet side radiation monitoring loop and the outlet side radiation monitoring loop. Performance of the adopted equipment can meet technical performance requirements of Qinshan field, and the number of electric pulses can be read directly; meanwhile, an alarm module is designed based on field conditions, and the safety is improved greatly; besides, production of the original alarm module is ceased, so that field space and performance requirements are taken into consideration comprehensively for design of the alarm module.
Description
technical field [0001] The invention belongs to the technical field of instrumentation, control and maintenance of nuclear power plants, and in particular relates to a radiation monitoring device for a nuclear power waste gas treatment system. Background technique [0002] During the normal operation of a nuclear power plant, radioactive inert gases (mainly krypton and xenon) may be produced due to damage to the fuel cladding or activation of certain substances in the core activation area after absorbing neutrons. Once these inert gases are produced, they will be released in the water of the primary circuit, and may be discharged into the air with the leakage of water or steam. In order to avoid possible leakage and minimize the emission of radioactive inert gas, it needs to be treated to reduce radioactive hazards. [0003] Exhaust gas treatment systems are designed to reduce the release of radioactive noble gases into the environment. When the exhaust gas treatment syste...
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IPC IPC(8): G01T1/20
CPCG01T1/20
Inventor 江沈伟卢辉董建峰石磊马跃峰陆惠强程巨光左建新
Owner CNNC NUCLEAR POWER OPERATION MANAGEMENT