High-temperature high-pressure oblique stop valve

Abstract

A high-temperature high-pressure oblique stop valve comprises a handle, a worm, a worm nut, a rotating assembly, a valve body, a stuffing box, a valve rod connected with the worm, a valve flap and a valve seat and is characterized in that a flow stabilizing sleeve is fixed above the valve seat. The stuffing box is disposed at the top of the flow stabilizing sleeve. A support is disposed between the stuffing box and the valve body. An 'O'-shaped seal ring is disposed on the radial contact face, in contact with the support, of the stuffing box. Stuffing is disposed in the stuffing box and provided with a stuffing pad at the bottom. The valve rod extends into the flow stabilizing sleeve and fixedly connected with the valve flap. Hard alloy is welded on the seal contact face of each of the valve flap and the valve seat. The high-temperature high-pressure oblique stop valve is good in sealing performance, capable of throttling, flexible to open, easy to mount and maintain and low in production cost.

Description

technical field [0001] The invention relates to a cut-off valve, in particular to a high-temperature, high-pressure direct-flow cut-off valve. Background technique [0002] A traditional high-temperature and high-pressure globe valve includes a handle, a worm, a worm nut, a rotating assembly combined with a worm nut lock nut on the upper part of the worm, a valve stem connected to the worm, a valve body, a packing culvert, a valve disc, and a valve seat, among which, Both the inside and the outside of the stuffing culvert are equipped with stuffing, and the stuffing outside the stuffing culvert needs to be sealed with the inner wall of the valve body. However, it is difficult to process holes in the valve body, and it is difficult to meet the process requirements. Contents of the invention [0003] The object of the present invention is to provide a high temperature and high pressure straight-line stop valve with good sealing performance, throttling effect, flexible openin...

AI Technical Summary

Problems solved by technology

[0002] A traditional high-temperature and high-pressure globe valve includes a handle, a worm, a worm nut, a rotating assembly combined with a worm nut lock nut on the upper part of the worm, a valve stem connected to the worm, a valve body, a packing culvert, a valve disc, and a valve seat, among which, Both the inside and outside of the stuffing culvert are filled with stuffing, and the stuffing outside the stuffing culvert needs to be sealed with the inner wall of the valve body. However, it is difficult to process holes in the valve body and it is difficult to meet the process requirements.

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