Packing type right-angle valve special for uranium hexafluoride

Abstract

The invention relates to the technical field of uranium enrichment, and particularly discloses a packing type right-angle valve special for uranium hexafluoride. The right-angle valve comprises a valve body, a sealing nut, sealing packing, a packing gland and a valve rod. The valve body is of a cylinder structure in the vertical direction, a horizontal protrusion of a cylinder structure is formed on the side wall of a cylinder, and connected channels in the vertical direction and the horizontal direction are formed by the valve body. The valve rod is mounted in the channel at the upper end in the vertical direction of the valve body. A thread structure of the cylinder outer wall of the lower end of the valve rod is matched with a thread at the position, close to a horizontal through hole, of the upper end of the valve body. A conic face structure at the lowest end of the valve rod and a low channel opening of the valve body can achieve linear sealing. Annular space between the cylinder router wall of the upper end of the valve rod and the inner wall of the valve body is filled with the sealing packing, and the sealing packing is pressed and fixed by the packing gland. The packing type right-angle valve special for uranium hexafluoride has the capacity of bearing high pressure loads and meanwhile has high channel leak rate and valve body leak rate requirements.

Description

technical field [0001] The invention belongs to the technical field of uranium enrichment, and in particular relates to a packed right-angle valve specially used for uranium hexafluoride. Background technique [0002] At present, the special valve for small-volume UF6 containers in the field of uranium enrichment is a bellows-type flange external thread right-angle vacuum valve, which is mainly suitable for vacuum systems and has a low pressure bearing capacity of up to 0.6MPa. With the improvement of process technology and the international standardization of UF6 containers, the pressure bearing capacity of small-volume UF6 containers in my country will be increased to 1.4MPa, and the existing valves can no longer meet the requirements of working conditions. Contents of the invention [0003] The purpose of the present invention is to provide a packing type right-angle valve specially used for UF6, which can not only satisfy the leakage rate of the channel and the valve b...

AI Technical Summary

Problems solved by technology

With the improvement of process technology and the international standardization of UF6 containers, the pressure bearing capacity of small-volume UF6 containers in my country will be increased to 1.4MPa, and the existing valves can no longer meet the requirements of working conditions.

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