Natural gas filtering filter element with multi-stage filtering function and filter

Abstract

The invention provides a natural gas filtering filter element with a multi-stage filtering function and a filter, the filter element comprises an inner framework, a filter material body, an outer framework, an upper end cover and a lower end cover which are coaxially arranged from inside to outside, the inner framework and the outer framework are both of a cylinder structure, a first channel is formed in the cylinder wall of the inner framework, a second channel is arranged on the cylinder wall of the outer framework; the filter material body is arranged between the inner framework and the outer framework and comprises at least one layer of absorbent cotton filter material, a polyester non-woven fabric filter material, a first polyester filter membrane filter material and a second polyester filter membrane filter material from inside to outside; the upper end cover is fixedly arranged at the upper ends of the inner framework and the outer framework to form sealing, and a through hole for natural gas to pass through is axially formed in the upper end cover; the lower end cover is fixedly arranged at the lower ends of the inner framework and the outer framework to form sealing, and a through hole for natural gas to pass through is axially formed in the lower end cover. The filter element has the advantages of capability of intercepting impurities with different particle sizes, high impurity removal rate, long service life and the like.

Description

technical field [0001] The invention relates to the technical field of natural gas filtering and purification components, in particular to a filter element and filter for filtering natural gas with multi-stage filtering functions. Background technique [0002] The filter element separates solid particles in liquid or gas, or fully contacts different material components to speed up the reaction time, which can protect the normal operation of the equipment or the cleanliness of the air. When the fluid enters the filter element with a certain specification filter, its impurities are blocked. , while clean fluid exits through the filter element. The liquid filter element makes the liquid (including oil, water, etc.) clean the polluted liquid to the state required for production and life, that is, to make the liquid reach a certain degree of cleanliness. [0003] Most of the existing combined natural gas filter elements are one-stage filtration. After the natural gas undergoes a...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing combined natural gas filter elements are one-stage filtration. After the natural gas undergoes a coalescence and separation process, all the filtration and purification processes are completed. Therefore, incomplete purification of liquid droplets often occurs, and liquid droplets enter downstream equipment with natural gas. , this phenomenon is also called the secondary entrainment phenomenon of droplets, the dehydration efficiency is low, the dehydration effect is poor, and the service life is short

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