Novel hermetic petroleum filter unit

Abstract

The invention discloses a novel hermetic petroleum filter unit comprising an inner filter cartridge. A petroleum inlet pipe and a petroleum outlet pipe are disposed at the top and bottom of the inner filter cartridge respectively. A seal steel shell is mounted outside the inner filter cartridge and a seal ring is sleeved at the connection position of the top of the seal steel shell with the petroleum outlet pipe. A conical base is mounted at the bottom of the seal steel shell. Two filter nets are sequentially arranged in the inner filter cartridge from top to bottom, and two distribution pipes are connected to two sides of the inner filter cartridge below the secondary filter net. The novel hermetic petroleum filter unit has the advantages that the inner filter cartridge is added for the petroleum filtering process and is used with the outer seal steel shell and the conical base, so that sealing performance can be improved, the novel hermetic petroleum filter unit is reasonable in structure, handy, practical and effective in filtering and conveniences are provided for use; during use, after the novel hermetic petroleum filter unit is connected to a petroleum pipe, petroleum entering the pipe can enter the filter unit from the surface of the pipe before flowing out, and sand in the petroleum can be filtered by the layers of filter nets.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a novel sealed petroleum filtering device. Background technique [0002] At present, pipe fittings used in petroleum, chemical industry, electric power, shipbuilding, metallurgy, machinery, textile, food, construction, pharmaceutical and other industries need to have high strength, pressure resistance, corrosion resistance and high temperature resistance. Therefore, in petroleum In the field of mining technology, in order to improve the recovery rate of oilfield crude oil, secondary oil recovery and tertiary oil recovery are usually carried out. The screen pipe is installed at the bottom of the oil well to separate the extracted oil from the sand in the formation A special pipe. However, the structure of the current petroleum screen is too simple. Generally, strip or hole-shaped screens are processed on the surface of the pipe, and some screens are made of stainle...

AI Technical Summary

Problems solved by technology

However, the structure of the current petroleum screen is too simple. Generally, strip or hole-shaped screens are processed on the surface of the pipe, and some screens are made of stainless steel wire after drilling. Obviously, its filtering function is relatively poor. Poor, unable to filter in layers, can not meet the needs of the industry; in addition, the current filter can only be used for sieving operation, but can not carry out normal conveying work, can not meet people's needs, especially poor sealing, no Corrosion resistance, short service life

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