A clamp joint titanium alloy five-lobed rib horizontal check valve

Abstract

The invention relates to a special matching valve in a pipeline specially used for delivering crude oil in an oilfield. Hoop lower half slips and hoop upper half slips are assembled in pair and fastened through two sets of bolts and nuts to form fast detaching structures outside a valve body. According to the adopted technology, the titanium alloy five-blade connecting rib horizontal check valve of a hoop joint comprises a cylindrical shaft, a swing valve element, a hoop joint valve body, fastening screws and outer end covers. The titanium alloy five-blade connecting rib horizontal check valve of the hoop joint is characterized in that the outer end of an outlet elbow and the outer end of an inlet elbow on the hoop joint valve body are respectively provided with a valve pipe plane, a valve pipe frustum face is arranged on the inner side of each valve pipe plane, the ends of external pipeline joints are provided with pipeline planes to be tightly attached to the valve pipe planes, and the inner sides of the pipeline planes of the external pipeline joints are pipeline frustum faces and correspond to the valve pipe frustum faces; the hoop lower half slips and the hoop upper half slips which assembled in pair and fastened through the two sets of bolts and nuts are provided with valve pipe conical hole faces and pipeline conical hole faces to be matched with the valve pipe frustum faces and the pipeline frustum faces; the single-blade thickness of five-blade connecting ribs is 1 / 21 to 1 / 19 of the diameter of a round flow channel opening.

Description

technical field [0001] The invention relates to a matching special valve in a pipeline specially used for transporting crude oil in an oil field, in particular to a clamp joint titanium alloy five-leaf rib horizontal one-way valve without any hindering 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 ...

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

Images