Assembling method of one-way flow channel switching valve

Abstract

The invention relates to an assembling method of a one-way flow channel switching valve. According to the assembling method of the one-way flow channel switching valve, a vertically symmetric half open valve body, a swing rotating valve core and a switching wrench are included, wherein a valve core sealing piece is configured on the swing rotating valve core, and a valve core rotating shaft is arranged between the swing rotating valve core and the switching wrench. According to the improvement, the vertically symmetric half open valve body comprises a vertical half side surface, a horizontal base plane, an inlet end half flange and an outlet end half flange, a half open split plane is arranged between the inlet end half flange and the outlet end half flange, a valve body spring seat is arranged on the inner side of the inlet end half flange, and a half open connecting hole is formed in the half open split plane; a vertical boss through hole and a semi-circle seal wall are arranged on the horizontal bottom plane, a valve rod hole seal groove is formed in the vertical boss through hole, and a dividing partition board is arranged on the semi-circle outer side of the semi-circle seal wall; cylindrical edges of a sealing part on the swing rotating valve core are tightly attached to the semi-circle seal wall to form dynamic seal; dynamic seal in the switching process is kept all thetime; steps of the assembling process are orderly, and all the parts are connected firmly.

Description

technical field [0001] The invention relates to an assembly method of a special pipeline switching valve on an oil field, in particular to an assembly method of a one-way channel switching valve without any obstructing parts such as springs. Background technique [0002] As we all know, the cost of each maintenance of the oilfield system is staggering, and crude oil contains various corrosive mixtures. During the production process of oilfields, the production fluid of oil wells generally contains water and other corrosive media. The water in crude oil, along with Crude oil vaporizes during the heating process, which increases the gas phase load of the pipeline, causing operation fluctuations of the atmospheric and vacuum devices, and in severe cases, tower flushing accidents. MgCl2 and CaCl2 in crude oil can be hydrolyzed to produce corrosive HCl, and HCl dissolves in water to form hydrochloric acid, which has a strong corrosive effect and causes corrosion of the pipeline s...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the cost of each maintenance of the oilfield system is staggering, and crude oil contains various corrosive mixtures. During the production process of oilfields, the production fluid of oil wells generally contains water and other corrosive media. The water in crude oil, along with Crude oil vaporizes during heating, which increases the gas phase load of the pipeline, causing fluctuations in the operation of atmospheric and vacuum devices, and in severe cases, tower flushing accidents

MgC12 and CaC12 in crude oil can be hydrolyzed to produce corrosive HCl, and HCl dissolves in water to form hydrochloric acid, which has a strong corrosive effect and causes corrosion of the pipeline system

After the crude oil is produced from the oil well, it is transported outward through the oil pipeline. Any repair or replacement of the oil circuit and the cleaning of the blocked pipeline will cost a lot, and will affect the production of the oil well for a long time.

[0003] One-way valves are indispensable in oilfield system pipelines to complete the entire delivery process. Currently used one-way valves, such as: steel ball type, valve type and gravity type, have the main disadvantages: the internal The spring causes a large resistance loss

The self-priming pump and other supporting one-way valves also have to overcome the gravity resistance in the whole process, resulting in additional energy consumption

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