Liquid level monitoring system, method and device for nuclear power plant containment recirculation pit
A liquid level monitoring and recirculation technology, which is applied in nuclear power generation, nuclear reactor monitoring, nuclear engineering, etc., can solve the problems of threatening the safety of nuclear power plants, inability to accurately monitor the liquid level of recirculation pits, and the loss of cooling function of containment, etc., to achieve The effect of improving reliability and stability
Active Publication Date: 2020-07-24
GUANGDONG NUCLEAR POWER JOINT VENTURE +4
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Problems solved by technology
[0004] In view of this, the embodiment of the present invention provides a liquid level monitoring system, method and device for the containment recirculation pit of a nuclear power plant, to solve the problem that the liquid level of the recirculation pit cannot be accurately monitored in the prior art, so that the safety Shell loses cooling function, threatening the safety of nuclear power plants
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[0041] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0042] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0043] Such as figure 1 As shown, the liquid level monitoring system of the containment recirculation pit of the nuclear power plant described in the embodiment of the present application, the liquid level monitoring system of the containment recirculation pit of the n...
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The invention belongs to the technical field of safety facilities specially established in a nuclear power plant, and provides a liquid level monitoring system for a recirculation pit of a containmentvessel in a nuclear power plant. The system includes a liquid level sensor, a penetration piece, and a display alarm, wherein the liquid level sensor includes a first liquid level sensor and a secondliquid level sensor, and the penetration piece includes a first penetration piece and a second penetration piece. A signal output line of the first liquid level sensor is connected to the display alarm through the first penetration piece arranged on a reactor containment vessel, which is taken as a major loop; a signal output line of the second liquid level sensor located in the recirculation pitis connected to the display alarm through the second penetration piece arranged on the reactor containment vessel, which is taken as a spare loop; and the display alarm performs display and monitoring according to the condition that if a collection loop normally selects a liquid level signal by a shift switch. When one liquid level monitoring loop breaks down, treatment doesn't need to be carriedout in a reactor. The system achieves monitoring and warning of a liquid level of the recirculation pit of a containment vessel and is improved in reliability and stability.
Description
technical field [0001] The invention belongs to the technical field of special safety facilities for nuclear power plants, and in particular relates to a liquid level monitoring system, method and device for a containment recirculation pit of a nuclear power plant. Background technique [0002] Due to the special environment of the nuclear power plant reactor building, it is not accessible during the normal operation of the unit. If the equipment in the reactor building fails during the power operation of the nuclear power plant, due to the high dose, if the maintenance personnel enter the maintenance, they will bear a greater burden. Therefore, under normal circumstances, the method of entering maintenance is not adopted, which will cause a certain equipment to be unavailable for a long time, which will cause safety hazards to the unit. Therefore, the instrumentation measurement system and safety facilities installed in the reactor building of the nuclear power plant must be...
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IPC IPC(8): G21C17/022
CPCG21C17/022Y02E30/30
Inventor 柴大虎陈士强林国强田广政
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE