SU1340836A1 - Arrangement for cleaning pipeline internal surface - Google Patents

Abstract

The invention can be used to clean the inner surface of the pipeline during its construction and operation and ensures the reliability of its work. The invention is equipped with an additional sensor-detector mounted on the housing between groups of magnets with the possibility of oscillatory movement. Such movement of an additional magnet creates a signal of a certain frequency, caught by special devices. 1 hp f-ly, 3 ill. from 4 O 00 00 O)

Description

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The invention relates to the construction and operation of main and field pipelines and can be used to detect a cleaning device stuck in a pipeline.

The aim of the invention is to improve the reliability of the device.

Figures 1 and 2 show the device for cleaning the internal surface of the pipeline, a section; fig. 3 - the same, in the detection operation mode.

The device consists of a housing 1 on which cleaning brushes 2 are rigidly fixed, cuffs 3 and groups of non-disposable permanent magnets 4. Between the groups of magnets 4, one permanent magnet 5 is oscillatory moving with the aim of eliminating the influence of the piston spatial position on the pipeline increasing the distance of the magnet 5 from the surface of the earth can be set to a greater number. The magnet 5 is associated with the movement of the mahanism 6, which uses the pressure drop of the medium moving the device as an energy source. The magnet 5 and the movement mechanism 6 are mounted on a spring support 7 fixed to the housing 1.

The device works as follows.

When moving in the pipeline at a given speed using brushes 2 and cuffs 3, the device performs its direct functional purpose — cleaning the internal cavity of the pipeline.

If the device is stuck in the pipeline, the movable magnet 5 by means of the movement mechanism 6 continues to carry out cyclic movements from one group of stationary magnets A to another, eliminating the impact of the magnets.

When the magnet 5 periodically approaches the groups of magnets 4, a pulsed increase in the magnetic flux and its bulging occur, and with the pulse frequency specified by the moving magnet movement mechanism 6, which provides a reliable indication of such pulses by the secondary device.

In the case of instantaneous stops of the device in the cavity of the pipeline or the departure of the device from the pipeline, a movable magnet 5 with fur

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This movement is prevented from damage due to the occurrence of significant dynamic loads due to their installation on a spring support fixed to the housing, and the spring stiffness provides the necessary damping effect for large dynamic effects. The retention by the movement mechanism of the moving magnet 3 in the space between the rows of stationary magnets 4 maintains the constant presence of magnetic interaction forces, which help to maintain the damping ability of the moving node, thereby increasing the total damping effect on the moving magnet 5 and the movement mechanism 6.

At the initial stage of the search, such a sensor-detector makes it possible to locate high-power magnetic masses, for example, using the MMP-203 proton magnetometer. Then, having determined using a flux-gate instrument, as the magnetic mass has characteristic magnetic pulsations of opposite (Fig. 1), or signs of the same name (Fig. 2), one can absolutely uniquely indicate the location of the cleaning device. In this device, the signal power (alternating magnetic field) significantly exceeds the sensor signals of known devices. This is achieved by interacting the field of a mobile magnet with a powerful field of stationary magnets. As a result, we obtain a peculiar amplifier of magnetic pulsed oscillations of the field of a moving magnet.

Thus, it is easy to encode the signal of the sensor-detector, and then find the device in

g if necessary. In order to more accurately and unconditionally determine the location of the cleaning device, the given frequency should be reported to the movable magnet. This reduces the possibility of an error to zero.

To eliminate the probability of damage, the most sensitive parts of the device are the sensor signal.

gp and a movable magnet with a mechanism of motion, the latter are installed on a shock-absorbing spring support. The support can significantly reduce the dynamic overloads that occur

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at critical moments the device stops. In addition, the condition that the poles of the adjacent surfaces of moving and stationary magnets are of the same name excludes the likelihood of direct impact collisions of two magnets.

Thus, the proposed design of the device provides high accuracy in determining the location of the cleaning device in the pipeline, reliability under high dynamic loads during its operation, which guarantees the possibility of repeated use of the device during washing and even blowing of the pipelines under construction.

Claims (2)

1. A device for cleaning the internal surface of the pipeline, containing cleaning elements fixed to the housing and a sensor detector in the form of two groups of permanent magnets, with the same poles of one group being displaced in a plane perpendicular to the axis of the pipeline, 180 relative to the same pole of the other group, reliability of operation, the sensor-detector is made with an additional permanent magnet mounted on the case between groups of magnets with the possibility of oscillatory movement and directed by its poles to the same poles of stationary groups of magnets. ) 2. The device according to claim 1, about tl and - the fact that the movable magnet is mounted on a spring support. S3,13333NN fi, 1 fie, 2 VNIIPI Zakza 4379/12 Circulation 540 Subscription Random polygons pr-tie, Uzhgorod, st. Project, 4 fig.Z