Natural gas filter

Abstract

The invention discloses a natural gas filter belonging to a natural gas pipe filtering device used in a petroleum collection and transmission engineering such as a natural gas field, a fuel gas transmission and distribution and pressure-regulating system and city gate stations and so on. The natural gas filter comprises a cylinder with an opening on the upper part, a filtering core arranged in the cylinder and a closed mechanism used for sealing an opening. The cylinder is provided with a feed gas inlet, a purified gas outlet and a drain, the upper end of the filtering core is close to the opening, the lower end of the filtering core is communicated with the detergent gas outlet. The natural gas filter is characterized in that the closed mechanism comprises a hub which is extendedly arranged on the top of the cylinder, a sealing cover, a quartered ring, a protecting cover and a fixing screw. The natural gas filter has the advantages that an opening vessel is rapid and convenient, time and labor-saving and cost-saving; the closed mechanism is provided with a self-locking structure, which uses the self-pressure of natural gas to prop up the sealed cover which is sealed with the hub through an O-shaped ring, the quartered ring props up the protection cover so as to meet the requirement of sealing; moreover, the sealing performance is excellent, the leakage of the vessel is prevented and the occurrence of accidents is reduced.

Description

technical field [0001] The invention relates to a natural gas filter, which belongs to a filter device for natural gas pipelines in oil gathering and transportation projects such as natural gas fields, gas transmission and distribution pressure regulation systems, and city gate stations, and is used for removing solid particle impurities and moisture in natural gas. Background technique [0002] Natural gas containing various solid particle impurities and moisture must be filtered before use to ensure that the gas source is dry and clean, so that it can enter the user's pipeline for use. The natural gas filter structure in the prior art consists of figure 1 As disclosed, it includes a cylinder 1 with an opening 11 on the upper part (head), a filter element 2 placed in the cylinder 1, and a sealing mechanism for sealing the opening 11. The cylinder 1 is provided with a raw material gas Inlet 12, purified gas outlet 13, sewage outlet 14, the upper end of the filter element 2 ...

AI Technical Summary

Problems solved by technology

The problem exposed in the actual use of the sealing mechanism in the above structure is: due to the connection method of the flange, flange cover, and bolt assembly, multiple people are required to operate each time the filter element is replaced, and a lot of manpower is required and financial resources

However, each filter generally needs to be replaced 2-3 times a year, and the total cost is about 8 million to 12 million yuan per year, which wastes a lot of manpower, material resources and financial resources.

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