Extension rod for injection needle valve for ap1000 reactor type nuclear power unit

Abstract

The invention discloses a jet needle valve extension rod for an AP1000 pile type nuclear power unit. The jet needle valve extension rod comprises a sleeve fixedly arranged in a wall in a penetrating manner, the end, located in a room, of the sleeve is provided with an inner flange, and the end, located outside the room, of the sleeve is provided with an outer flange; an extension rod shaft penetrates through the sleeve to be in rotating connection with the sleeve, a hand wheel is connected with a force stripping device, the force stripping device is connected to the end, located outside the room, of the extension rod shaft in a sleeved manner, and the end, located in the room, of the extension rod shaft is connected with a connection pipe; and one end of an adjustment rod is inserted into the connection pipe, the other end of the adjustment rod is connected with a needle valve locking device, the needle valve locking device is locked to a jet needle valve, and the extension rod shaft is rotated through the hand wheel and the force stripping device to drive the connection pipe and the adjustment rod to rotate to switch on or switch off the jet needle valve. By means of the jet needle valve extension rod, the situation that operators enter a radiating area to operate the jet needle valve is effectively avoided, radiation threats to the operators are avoided, and the physical and psychological health of the operators is effectively protected.

Description

technical field [0001] The invention relates to an extension rod, in particular to a jet needle valve extension rod for an AP1000 reactor type nuclear power unit, and belongs to the technical field of nuclear power unit equipment. Background technique [0002] The injection needle valve for AP1000 reactor nuclear power unit is installed in the area with heavy nuclear radiation, and the operating space is very tight. At the same time, due to the frequent operation of the injection needle valve, if the personnel directly operate it, the operator will be threatened by radiation. It will cause great danger to the health of the operators, which will inevitably affect the physical and mental health of the operators. Therefore, we are invited by the nuclear power plant to design a technical solution to this technical problem. Contents of the invention [0003] After the actual investigation on the site and the measurement of the specific current situation, the present invention p...

AI Technical Summary

Problems solved by technology

[0002] The injection needle valve for AP1000 reactor nuclear power unit is installed in the area with heavy nuclear radiation, and the operating space is very tight. At the same time, due to the frequent operation of the injection needle valve, if the personnel directly operate it, the operator will be threatened by radiation. It will cause great danger to the physical health of the operator, which will inevitably affect the physical and mental health of the operator. Therefore, we were invited by the nuclear power plant to design a technical solution to this technical problem

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