One-way flow passage switching alloy valve

Abstract

The invention relates to a one-way flow passage switching alloy valve, which is a pipeline switching valve especially used on an oil field, and comprise upper and lower symmetrical semi-open valve bodies, a swing valve core and a switching wrench, wherein the swing valve core is provided with a valve core sealing piece, and a valve core rotating shaft is arranged between the swing valve core and the switching wrench. As an improvement, the upper and lower symmetrical semi-open valve bodies comprise a vertical semi-side surface, a horizontal bottom plane, an inlet end semi-flange and an outletend semi-flange, a semi-open split plane is arranged between the inlet end semi-flange and the outlet end semi-flange, a valve body spring seat is arranged on the inner side of the inlet end semi-flange, and a semi-open connecting hole is arranged on the semi-open split plane; the horizontal bottom plane is provided with an upper lug boss through hole and a lower lug boss through hole and a semicircular sealing wall, the upper lug boss through hole and the lower lug boss through hole are internally provided with valve rod hole sealing grooves, and the semicircular outer side of the semicircular sealing wall is provided with a shunt partition plate; a titanium-based alloy wear-resistant layer is sprayed on the surface of the horizontal bottom plane; and the cylindrical surfaces of the sealing pieces on the swing valve core are all clung to the semi-circular sealing wall to form dynamic sealing so as to ensure that in the switching process, the valve is always dynamically sealed.

Description

technical field [0001] The invention relates to a special pipeline switching valve on an oil field, in particular to a one-way channel switching alloy 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 system. After the crude oil is produce...

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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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