INTERNAL TUBE STENCIL Russian patent published in 2014 - IPC F16L55/26 

FIELD: machine building.

SUBSTANCE: internal tube stencil comprises two sections hingedly connected to each other. The first section includes a tubular body with flanges. The following components are installed on the tubular body: plate collars at the opposite sides, a bumper for reeving of the stencil, a transmitter for a scraper, a conical collar, imitators of odometres, a spring for removal of electrostatic charges. The second section comprises a tubular body, plate springs at the opposite ends, a spider, a unit for measurement of throughput section of the pipeline, placed in the body cavity. The bumper, the transmitter for the scraper and the plate collar are connected to each other and installed at the end of the tubular body by means of a gasket made in the form of a bushing with flanges. The unit for measurement of throughput section of the pipeline includes a pusher communicated with levers of the spider, interacting with the piston installed in the cavity of the tubular body of the section section, and the piston is made as capable of reciprocal motion for determination, according to this movement, of the value of the throughput section of the pipeline.

EFFECT: invention will make it possible to simplify design and to increase reliability of its operation.

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