Corrosion inhibitor film applicator for gathering and transportation pipelines

Abstract

The invention discloses a slow-release agent film applicator for gathering and transportation pipelines, especially a corrosion inhibitor film applicator for gathering and transportation pipelines for high-sulfur-containing moisture, which is composed of a battery compartment, a motor compartment, and an impeller, and the battery compartment and the motor compartment It is a tubular body, with guide discs and sealing cups installed at both ends, fixed on the front and rear end plates by bolts, battery packs and governors are installed in the battery compartment, and the battery compartment and motor compartment are connected through universal joints; speed regulation The wires are arranged in the universal joint to connect the governor to the motor in the motor compartment, and the motor shaft is connected to the impeller. The impeller rotates under the drive of the motor, and the slow-release agent in the lower part of the pipeline is carried to the top of the pipeline through the blades, covering the entire pipeline. The inner wall, at the same time, can adjust the speed of the impeller according to the size of the air volume, which ensures the pre-film time and film quality, and effectively reduces the top corrosion rate.

Description

technical field [0001] The invention discloses a slow-release agent film applicator for gathering and transportation pipelines, in particular to a corrosion inhibitor film applicator for gathering and transportation pipelines for high-sulfur moisture. Background technique [0002] In the natural gas industry, the function of the wet gas gathering and transportation pipeline is to transport the unseparated and purified natural gas in the gas gathering station to the gas treatment plant for further processing. Heat exchange occurs between the pipe and the external environment during the moisture transport process. When the heat conduction makes the temperature of the pipe wall lower than the water vapor dew point, a part of the heavy components will condense out, resulting in effusion. For sour gas pipelines containing hydrogen sulfide and carbon dioxide, under the condition of effusion, it will cause serious electrochemical corrosion of the pipeline, resulting in thinning or ...

AI Technical Summary

Problems solved by technology

However, the device has the following problems in the use process: one is that the gas behind the pig continuously enters the closed space formed by the two pigs, which causes the distance between the front and rear two pigs to become larger and larger, and the height of the liquid enclosed between them is higher and higher. The lower the lower, the more difficult it is for the liquid to enter the nozzle, or even completely fail; the second is that the pig may rotate during operation, which will cause the spraying position of the nozzle to deviate from the top of the pipeline, resulting in poor reception at the top of the pipe wall. 3. The amount of liquid injected is affected by various factors such as the gas flow rate behind the pipeline, the pipeline structure, etc., and cannot be kept constant, and the quality of the pre-film cannot be guaranteed

In fact, due to the considerable frictional resistance between the film applicator and the inner wall of the tube, it is difficult to rotate during operation and cannot carry the bottom liquid to the top, so it cannot be applied in actual production

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