Self-blockage-removing speed-regulating pipe cleaner

Abstract

The invention provides a self-blockage-removing speed-regulating pipe cleaner, which comprises actuators, actuator protective sleeves, rubber cups, a pipe cleaner outer body, lead wires, a distance adjusting ring, a bearing, a mandrel, an impeller, magnetic poles, a coil, a supporting ring, a pipe cleaner inner body and a guide wheel, wherein the rubber cups are arranged at the two ends of the pipe cleaner outer body, the pipe cleaner inner body is arranged in the pipe cleaner outer body, and the pipe cleaner inner body, the pipe cleaner outer body and the rubber cups form a hollow structure;and the coil is fixed in an annular groove of the pipe cleaner inner body, the impeller is arranged in the coil, and the magnetic poles are arranged on the outer circumferential surface of the impeller. Electric energy generated by rotation of the impeller is converted into heat energy by means of an electric heating wire on the artificial muscle, crude oil can be heated when the pipe cleaner works normally, wax on a pipeline can be removed conveniently, and the actuators drive the rubber cups to deform to a certain degree due to temperature changes, so as to control a friction force between the pipe cleaner and the pipeline, and achieve the purpose of adjusting the speed of the pipe cleaner.

Description

technical field [0001] The invention relates to the field of oil and gas pipeline pigging, in particular to a self-blocking speed-regulating pig. Background technique [0002] The pig is an effective tool for removing debris inside the oil and gas pipeline. When working, it uses the flow velocity of the oil and gas medium and the pressure difference at both ends of the pig as the power source, and scrapes off the inside of the pipeline through the contact and friction between the leather cup and the inner wall of the pipeline. When the pigs perform pigging operations at a certain speed, the best cleaning effect can be achieved, so it is necessary to adjust the speed of movement under their working conditions. For the problem of large speed changes during pig operation, there are many existing speed regulation structures and methods. First, a speed measuring unit and a bypass valve can be installed on the pig to adjust the speed by monitoring the speed of the pig. The openin...

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Problems solved by technology

[0004] Aiming at the problem that the speed change of the traditional pipe pig affects the pigging effect during the operation and the pipe pig is stuck caused by the deformation of the pipeline or the excessive thickness of the sediment, the present invention provides a self-blocking speed-regulating pipe pig. The present invention provides The pig is a hollow structure with a certain discharge area in the center. Crude oil flows through the middle, impacts the guide wheel and drives the impeller to rotate, the outer edge of the impeller is fixed with magnetic poles, and the groove on the inner body of the pig Coils are arranged inside, and electric energy is generated with the change of the magnetic field. The actuator is made of polymer helically wound artificial muscles, and the interior contains electric heating wires, which are converted into heat energy under the action of electric energy. After the temperature rises, the artificial muscles contract and The driving force is output to deform the pig cup, and the speed regulation function of the pig is realized by adjusting the friction force between the cup and the pipeline

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