Ultrasonic welding construction method for small-caliber PE natural gas pipeline

Abstract

The invention discloses an ultrasonic welding construction method for a small-caliber PE natural gas pipeline, and relates to a pipeline connection method. The ultrasonic welding construction method for the small-caliber PE natural gas pipeline is high in construction efficiency and easy and convenient to operate. The ultrasonic welding construction method for the small-caliber PE natural gas pipeline comprises the following steps that the pipeline is subjected to section cleaning, chamfering and surface oxide skin removing treatment; the pipeline is installed in a clamping and welding device; the position of the clamping and welding device is fixed; an upper fixing block and a lower fixing block are arranged to fix the upper pipeline section and the lower pipeline section correspondingly; a plurality of ultrasonic wave generating devices are arranged on the periphery of the upper fixing block, and the ultrasonic wave generating devices are pressed by pressing blocks; an electromagnetic valve and a push rod are arranged on each pressing block, and the bottom of each push rod is connected with the pressing block; and the ultrasonic wave generating devices are started, ultrasonic waves are generated on the pressing faces of the two pipeline sections, the pressing faces of an upper PE natural gas pipeline body and a lower PE natural gas pipeline body are melted, and the welding process is completed.

Description

technical field [0001] The invention relates to the technical field of pipeline connection, in particular to an ultrasonic welding construction method of a small-diameter PE natural gas pipeline. Background technique [0002] PE pipe has many excellent characteristics, such as low temperature resistance, good toughness, high strength, etc., and has been well used in the natural gas industry. PE natural gas pipelines show their talents in some special-purpose occasions, because in these fields, PE natural gas pipelines have great advantages over traditional metal material pipelines, such as low pipeline cost, easy climbing of large slopes, and arbitrary angles of pipelines Turning, and can also ensure the safe use of the pipeline. Such as steel pipes, cast iron pipes, and natural gas pipelines, the biggest problem is the common occurrence of pipe corrosion and joint leakage during the service period. PE natural gas pipeline has obvious advantages, and satisfactorily solves ...

AI Technical Summary

Problems solved by technology

[0006] 1. Need special thermal welding equipment to operate;

[0007] 2. The operation process and welding technology are complex, requiring high technical proficiency of the operators, and special training is required to work on the job. If there is a slight error, the joint must be sawed off, the joint must be re-milled and the welding operation must be performed again;

[0008] 3. The operation site needs to be connected to a stable municipal power supply;

[0009] 4. The operation speed is slow, and it takes about 25 to 50 minutes to heat-melt weld a joint, and the operation efficiency is low;

[0010] 5. The operation method cannot be operated in winter and windy weather

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