SU1218238A1 - Arrangement for shutting-off pipeline - Google Patents

Description

The invention relates to pipeline transport and is intended to shut off both existing pipelines during their repair and those that are being built during their testing.

The purpose of the invention is to simplify the operation of the device by eliminating the flow of mounting holes in the pipeline for mounting the locking element.

The drawing schematically shows the proposed device.

The device consists of a tubular body 1 made of a non-magnetic material, provided with spring-loaded guide rollers 2 mounted on two shoulders 3, the free arms of which are in contact with the end walls of the inflatable elastic chamber 4 enclosing the body having inlet 5 and outlet 6 channels through which the cavity is elastic the chamber communicates with a source of working medium (gas), consisting of a receiver 7 and equipped with a reducing valve 8 of a cylinder 9 with solenoid gas, placed in a spring loaded in than the position by the spring 10 of the ferromagnetic piston t1 with through radial 12 and longitudinal 13 channels, respectively, for supplying gas into the cavity of the inflatable chamber 4 and releasing gas from it. On the front (along the movement of the device) end wall of the housing there are holes 14, to release gas from the device into the pipeline 15, to prevent clogging of the holes 14 as the device moves along pipeline 15, a shield 16 is fixed on the front end wall of the housing the housing 1 is provided with seals placed on the protrusions (recesses) of the housing or the piston; Outside of the pipeline 15, a locking element 17 is installed in the place of overlap, made in the form of a source covering the pipeline a rotten floor (preferably an electromagnet),

The pipeline is blocked as follows.

The device in the off position (the piston 11 is pressed by the spring 10 to the extreme left position, and the gas is expelled from the chamber 4)

the start unit of the cleaning devices into the pumped medium and is transported to the place of pipeline 15 shutdown. When the device approaches the shutdown place is on, the electromagnet 17 enters the action area (Wi magnetic field, ferromagnetic piston 11 tends to hold in it, and overcoming the spring force 10 is shifted to the right position

relatively non-magnetic body 1. In the extreme right position, the piston 11 rests with its shoulders against the counter shoulders of the body 1 (the high pressure zone is sealed), the channels 5 are aligned with the channels 12, the compressed gas from the reactor 7 enters the cavity of the chamber 4 and , blowing it, presses against the wall of the pipeline.

In the process of inflation, the chamber 4 acts with its end walls on the free shoulders of the levers 3 and presses their ends against the walls of the pipeline 15, ensuring reliable fixation of the device in place of overlap. The device stops and, in the process of further inflation of the chamber 4, tightly closes the cross section of the pipe.

wires,

To further move the device through the pipeline, the electromagnet 17 is turned off, the piston returns to its extreme left position under the influence of the spring, the channels 13 are aligned with the channels 6, and the gas from the cavity of the chamber 4 through the holes 14 is vented into the pipeline. As a result, the rollers take their original position, i.e. comes into contact with the pipeline, and the device in the pumped stream

The environment moves further along. pipeline to the next location of the block (in the receiving unit cleaning devices).

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75

Compiled by I.Gazar N. Editor S.Lisina Tehred A. Babinets Corrector A.Obruchar

Order 1122/49 Circulation 880 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PGS Patent, Uzhgorod, Proektna St., 4

Claims (2)

1. DEVICE FOR OVERLAPPING A PIPELINE, consisting of a tubular body provided with guides and an elastic inflatable chamber enclosing it, the cavity of which is connected to a working medium source located in the housing, the valve of which opens under the influence of an externally mounted stop element, characterized in that, in order to simplify 'operation due to the exclusion of cutting holes in the pipeline for mounting the locking element, the valve of the source of the working medium is made in the form of installed inside three cases of a spring-loaded ferromagnetic piston, a locking element of the valve - in the form of an electromagnet covering the pipeline, and a tubular body - of non-magnetic material. 2. The device according to p. ^ Characterized in that, in order to increase the reliability of fixing the device in the working position, the guide bodies are made in the form of rollers mounted on rotary two-arm spring-loaded levers, the free shoulders of which are in contact with the end wall of the inflatable chamber.