A clamp joint aluminum alloy two-leaf vertical check valve with ribs

Abstract

The invention relates to a valve special for an offshore oil drilling platform, in particular to a clamp connector aluminum alloy two-blade-connected vertical check valve which comprises a lower clamp head hemispherical shell, an upper clamp head hemispherical shell, a cylindrical tube and a variable runner valve core, wherein a lower tube end plane at the lower end of a round hole inlet tube on the lower clamp head hemispherical shell is in sealed contact with an inlet tube end plane on a system inlet tube; a lower tube back conical surface on the back side of the lower tube end plane and an inlet tube conical surface on the back side of the inlet tube end plane are in symmetry; a lower tube back conical surface and the inlet tube conical surface are movably matched with a lower clamp right double-conical surface inside a lower clamp right half slip and a lower clamp left double-conical surface inside a lower clamp left half slip; two groups of lower bolts and screw nuts for assembling and fastening in pair are arranged between the lower clamp right half slip and the lower clamp left half slip; a variable runner in the variable runner valve core is gradually changed into a valve core round hole in an upper spherical surface of the valve core from an annular valve core hole in a lower spherical surface of the valve core. Therefore, one-way circulation is ensured when the variable runner valve core moves vertically relative to the cylindrical tube.

Description

technical field [0001] The invention relates to a special valve for an offshore oil drilling platform, in particular to a clamp joint aluminum alloy two-leaf ribbed vertical check valve without any hindering 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 mobile ...

AI Technical Summary

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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