Hoop connector six-plate diversion vertical one-way valve made of titanium alloy

Abstract

The invention relates to a special valve for an offshore oil drilling platform, in particular to a hoop connector six-plate diversion vertical one-way valve made of titanium alloy. The diversion vertical one-way valve made of the titanium alloy comprises a hoop connector valve body, an upper diversion body, a lower diversion body, an upper half valve element and a lower half valve element. The outer edge of a lower conical cylinder is connected with a lower cylinder step inner circle matched with an upper cylinder step outer circle in a sealed mode. The inner edge of the lower conical cylinder is connected with a lower cylinder external thread matched with an upper cylinder internal thread in a sealed mode. A valve element middle inner circle on the inner side of the lower cylinder external thread and a valve element lower inner circle on the lower conical cylinder are the same in size and are in sliding fit with a cylindrical valve rod outer circle. An upper half valve element outer circle and a lower half valve element outer circle are the same in size and are in sliding fit with an inner circle through hole. The thickness of single blade of a positioning upper six plate and a positioning lower six plate ranges from 4 millimeters to 5 millimeters. The hoop connector valve body is not internally provided with a spring or other middle objects which probably produce large resistance losses, the accidental faults caused by bias pessure or failure due to the fact that the damping spring cannot bear torrent impact are avoided thoroughly, and the service life of the special valve is prolonged.

Description

technical field [0001] The invention relates to a special valve for an offshore oil drilling platform, in particular to a clamp joint six-plate diversion titanium alloy vertical one-way valve without any obstructing parts such as springs. Background technique [0002] Following the discovery of a large oil field in Venezuela in 1920 by using a wooden platform to drill wells in Lake Maracaibo, the Soviet Union successfully conducted offshore drilling with a trestle near the Baku oil field in the Caspian Sea in 1922. After 1936, the United States began to drill the first deep well in the Gulf of Mexico. In 1938, the world's earliest offshore oil field was built. From the 1940s to the 1960s, with the development of welding technology and the steel industry, drilling devices such as steel fixed platforms, sitting-bottom platforms, and jack-up platforms appeared one after another, expanding offshore oil and gas exploration to sea areas with a water depth of 30 meters. In 1950, a...

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Problems solved by technology

[0003] As we all know, the cost of each maintenance of the offshore oil drilling platform system is astonishing. Seawater itself contains various corrosive compounds. During the use of offshore oil drilling platforms, crude oil contains various corrosive compounds. Generally, oil well production fluid contains water and other corrosive media. The water in crude oil vaporizes with the crude oil during the heating process, 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.

[0004] Any component in the offshore oil drilling platform system must be able to withstand seawater corrosion. It is essential to use a check valve in the pipeline of the offshore oil drilling platform system to complete the entire delivery process. The currently used check valve, Such as: steel ball type, valve type and gravity type, the main disadvantage is: the internal 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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