Nuclear power unit main steam isolation valve chamber pressure relief plate

Abstract

The invention discloses a nuclear-power-unit main steam isolating valve chest pressure releasing plate. The nuclear-power-unit main steam isolating valve chest pressure releasing plate comprises a pressure releasing plate body. The pressure releasing plate body comprises a panel frame assembly and a lifting assembly used for opening the pressure releasing plate body, inclined face shroud plates are installed on the two sides of the panel frame assembly correspondingly, and a side face shroud plate is installed on the front face; one side of the bottom of the panel frame assembly is movably connected with a bottom frame through hinges, the pressure releasing plate body achieves opening and closing through hinges, and the lifting assembly comprises a jack and a plurality of pressure reducing plug pins; and a jack sliding rail is arranged on one side, away from the hinge, of the bottom frame, the jack is connected with the bottom frame through the jack sliding rail, and the multiple pressure reducing plug pins are fixedly installed on the outer portion of one side, away from the hinge, of the bottom frame at equal intervals. According to the nuclear-power-unit main steam isolating valve chest pressure releasing plate, the structure is simple, using is convenient and effective, and the pressure releasing plate can be automatically opened to achieve a pressure releasing function when pressure is high.

Description

technical field [0001] The invention relates to the technical field of nuclear power unit equipment, in particular to a pressure relief plate for a main steam isolation valve chamber of a nuclear power unit. Background technique [0002] The main steam isolation valve is used in the main steam system of the secondary circuit of the pressurized water reactor nuclear power plant. The overpressure of the containment vessel when one of the main steam pipes in the shell ruptures, and limits the cooling of the main system due to the rupture of the steam pipe. System design One main steam isolation valve is installed in each main steam pipeline, including valve body, actuator and control system. Some structural forms of the main steam isolation valve also have a bypass valve, which can balance the pressure difference before and after the main valve and warm the downstream pipeline of the main valve. The main steam isolation valve is one of the most critical equipment in nuclear p...

AI Technical Summary

Problems solved by technology

The main steam isolating valve is one of the most critical pieces of equipment in nuclear power equipment, and is directly related to nuclear safety. When the pressure in the main steam isolating valve chamber of a nuclear power unit is too high, if the pressure is not released in time, a major accident will occur, which will not only damage the nuclear power plant The work of the crew will also pose a threat to the safety of the staff

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