Quantitative limiting valve for crude oil conveying pipeline

Abstract

The invention discloses a quantitative limiting valve for a crude oil conveying pipeline, and belongs to the field of valves. The quantitative limiting valve comprises a valve casing, wherein a valvedeck is clamped to the upper end of the valve casing, an adjusting rod is inserted into the valve deck, a pressure adjusting mechanism fixedly connected to the valve deck and comprises a shell, an adjusting bolt in threaded connection with the shell, a carrying bearing is rotationally connected to the end, located in the shell, of the adjusting bolt, the adjusting rod comprises a movable rod, a pressing plate and a supporting block are connected to the upper end and the lower end of the movable rod respectively, an outer ring of the carrying bearing is fixedly connected with the pressing plate, a compression spring is connected between the pressing plate and the valve deck, an inserting groove is cut in the upper end of the pressing plate, and a handle matched with the pressing plate is slidably connected to the top end of the shell. Through the quantitative limiting valve, the flow of fluid in a valve body can be rapidly adjusted, damage to the inner wall of the valve body when crudeoil in the valve body flushes the inner wall of the valve body is reduced, the interior of the valve body can be self-repaired in time after being damaged, and the service life of the valve body is prolonged.

Description

technical field [0001] The invention relates to the field of valves, in particular to a quantitative limiting valve for crude oil transportation pipelines. Background technique [0002] In the process of producing, storing and transporting crude oil in oil fields, storage tanks are generally used as crude oil storage equipment. The transportation pipeline only needs to connect the crude oil transportation bus directly to the storage tank. However, if the transportation pipeline or storage tank needs maintenance, it is necessary to It will cause production stoppage and greatly affect the production capacity. [0003] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc.; [0004] At present, many oil fields in China report that the valve gro...

AI Technical Summary

Problems solved by technology

[0004] At present, many domestic oil fields report that the valve group on the oil transmission pipeline is easy to corrode, and wax deposits and scales occur on the valve group, which affects the transmission efficiency of the medium and reduces the service life of the valve group

And because there are a lot of valve groups on the pipeline, if they are replaced frequently due to poor anti-corrosion performance, it will undoubtedly greatly increase the cost of oil transportation. At present, the inner wall of the valve used to transport crude oil has been washed by crude oil for a long time Afterwards, the anti-corrosion layer on the inner wall is easily scratched by the impurities in the crude oil, causing the pollutants in the crude oil to cause damage to the valve body.

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