Pulse type halogen gas generator

Abstract

The invention belongs to the field of nuclear technologies, and in particular relates to a pulse type halogen gas generator. The pulse type halogen gas generator comprises a pressure-bearing liquid storage tank used for storing a liquid halogen reagent, and a reserved cavity connected with the pressure-bearing liquid storage tank by means of a metering valve, wherein the metering valve is capableof introducing a definite quantity of the halogen reagent from the pressure-bearing liquid storage tank into the reserved cavity; the reserved cavity is connected with a compressed air inlet pipelineand a gas outlet pipeline separately; the compressed air inlet pipeline is used for introducing a compressed gas into the reserved cavity; and the compressed air inlet pipeline and the gas outlet pipeline are each provided with a pulse value, the pulse valve is used for controlling the compressed gas to enter the reserved cavity from a compressed air inlet and flow out of a gas outlet, and the compressed gas is used for vaporizing the halogen reagent in the reserved cavity into a halogen gas and discharging the halogen gas out of the gas outlet pipeline. The pulse type halogen gas generator has the advantages of simple operation, easy control, convenient assembly, disassembly and maintenance, low halogen reagent consumption, and little environmental pollution.

Description

technical field [0001] The invention belongs to the field of nuclear technology, and in particular relates to a pulsed halogen gas generator. Background technique [0002] Iodine adsorber is the core equipment for removing radioactive iodine pollutants in nuclear power plant process exhaust gas and exhaust air. It is also a key component in the air purification system of nuclear facilities. On-site acceptance test for performance testing, and regular tests for performance testing during operation. [0003] ASME AG-1, N510 and ET791 standards stipulate that halogen gas can be used as tracer to test the mechanical leakage rate of iodine adsorber (row). Commonly used halogen gases are Freon R-11, R-12 and R-123, etc. Freon is a non-radioactive substance that is easily absorbed and analyzed by activated carbon. For iodine adsorbers, the Freon leak test is a non-destructive test. The test requires the use of a halogen gas generator to generate the halogen gas required for the d...

AI Technical Summary

Problems solved by technology

With the development of third-generation nuclear power, the application of Freon leak detection technology is becoming more and more extensive. At present, continuous halogen gas generators are used in China to conduct on-site tests for the performance testing of iodine adsorbers in nuclear air purification systems. The test takes a long time. The amount of halogen gas is relatively large, which has certain adverse effects on the environment

If the pulse mode halogen gas generator is used, the time required for the test is short and the amount of halogen gas tracer is small, but the pulse mode halogen gas generator has been monopolized by foreign companies, which is expensive, long order cycle, and difficult after-sales service

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