Butterfly valve and online fast changing type assembling method for valve plate of butterfly valve

Abstract

The invention relates to the technical field of valves, in particular to a butterfly valve and an online fast changing type assembling method for a valve plate of the butterfly valve. The butterfly valve comprises a valve body and a valve plate assembly. A medium inlet and a medium outlet are formed in the opposite two sides of the valve body correspondingly. The top of the valve body is providedwith an overhaul window, and a lower end cover is arranged at the bottom of the valve body. The valve plate assembly is installed in the valve body through the overflow window, and the lower end of the valve plate assembly ejects the lower end cover. The upper end cover is connected with the upper end of the valve plate assembly and presses the valve plate assembly so that vertical moving of the valve plate assembly in the valve body can be limited. The assembling method includes the following steps that all parts of the to-be-assembled valve are prepared, and the parts are cleaned; the new valve plate assembly is assembled; the old valve plate assembly is demounted; and the new valve plate assembly is installed in the valve body from the top of the valve body. The butterfly valve and theonline fast changing type assembling method for the valve plate of the butterfly valve have the beneficial effects that modular fast assembling of the valve plate assembly is facilitated, and the assembling quality and efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a butterfly valve and an online quick-change assembly method for a valve plate of the butterfly valve. Background technique [0002] With the development of my country's oil and natural gas industry, natural gas is becoming more and more popular as a clean energy. In the process of liquefaction, storage and transportation of natural gas, the demand for low-temperature butterfly valves is huge. At the same time, due to the flammability of the medium, higher requirements are put forward for low-temperature butterfly valves. The valves need to have good sealing performance, low leakage and long service life. At the same time, the valve can quickly realize online maintenance. During online maintenance, it is necessary to ensure fast positioning of the sealing ring and quick replacement of internal parts such as the valve plate. The one-time assembly is qualified, and it is very diffi...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an online quick-change assembly method for the butterfly valve and the valve plate of the butterfly valve, which is used to solve the difficulties in the online assembly of the butterfly valve plate in the prior art and the low assembly efficiency. question

Images