Y-shaped valve body threaded connection high temperature and high pressure globe valve

Abstract

The invention relates to the field of stop valves, in particular to a high-temperature and high-pressure stop valve with a Y-shaped threaded connection valve body. The high-temperature and high-pressure stop valve a valve body, a valve seat, a valve clack, a valve rod, a valve cover, a sealing mechanism and a gear head, wherein the valve body is divided into an upper valve body and a lower valve body which are fixedly connected together through a bolt and a nut, and a sealing ring is mounted in the middle; and an inlet flow channel and an outlet flow channel of the high-temperature and high-pressure stop valve with the Y-shaped threaded connection valve body form an oblique line, and the flow channels and the valve rod direction form a Y shape. The high-temperature and high-pressure stop valve has the advantages that the problem that the sealing part is not easy to dismount and replace after damaged, so that the maintenance is convenient; the problems that hydraulic resistance is large and dregs are prone to be accumulated in the bent position of a high-temperature and high-pressure stop valve with a straight-through type Y-shaped threaded connection valve body are solved; and zero leakage of the valve sealing surface is achieved, anti-cavitation and anti-scouring capacities of the valve clack and the valve seat are improved, and further, the performance of the whole machine and the usability performance of the valve are improved.

Description

technical field [0001] The invention relates to the field of stop valves, in particular to a high-temperature and high-pressure stop valve with a Y-shaped valve body threaded connection. Background technique [0002] The traditional globe valve body is integral. There are two main forms of the combination of the valve body and the valve seat; one is that the sealing surface of the valve seat is directly welded on the sealing part of the valve body and processed. Second, according to different media, after the valve seat is made of selected materials, it is fixed on the sealing part of the valve body by expansion, screw connection, pressing, welding and other methods. After these two types of valve seats are damaged, it is difficult to remove them for repair or replace them with new ones. Moreover, the fluid resistance of the traditional globe valve is large, and slag is easy to accumulate at the bend. Contents of the invention [0003] In order to solve the above proble...

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