Safety valve for nucleus
A safety valve, nuclear technology, applied in the field of safety valve, can solve the problems of pressure medium, high temperature impact, easy damage, etc., to achieve the effect of light weight, high reliability and wide use
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[0039] The new nuclear safety valve provided by the present invention is composed of an auxiliary valve, a main valve, a relay valve, and a forced opening and closing solenoid valve. The structure of the main valve is as follows figure 1 As shown, the main valve seats [31] and [32] are screwed into the main valve body [30] in a threaded manner from bottom to top. The annular space formed by the main valve seats [31] and [32] and the pulse The tube [29] is connected. The main valve [33] is covered on the main valve seat [31], and the main valve stem [28] is fixedly connected with the main valve [33], and the threaded part of the lower end passes through the piston [67]. The nut (26) secures the main valve stem (28) to the piston (67). The compression force of the pre-tension spring [27] acting on the piston [67] acts on the main valve flap [33] through the main valve stem [28], making a part of it become the pre-tightening sealing force of the main valve flap [33] . The other part...
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