RU38499U1 - SYSTEM OF SUPPORT OF IN-TUBE APPLIANCES - Google Patents

Description

TRAINING SYSTEM FOR IN-TUBE APPLIANCES

The utility model relates to pipeline transport, namely, to the operation of oil pipelines and is intended for continuous determination from the control room of the location of treatment and diagnostic devices (in-pipe shells) moving in the pipeline.

One of the ways to increase the reliability, safety and operational efficiency of main oil pipelines is to perform in-line diagnostics with the subsequent repair of detected defects and cleaning the inner surface of pipelines from deposits. The indicated ways to improve the quality of operation of oil pipelines

in-pipe, moving with the flow of oil, shells of diagnostic and treatment devices.

A serious problem to be solved when using in-tube devices is the determination of their exact location when moving in the pipe in real time, i.e. maintenance problem.

This problem can be solved, for example, by installing at specified control points mechanical, electromagnetic, magnetic or acoustic signaling devices 1, fixing the passage of the in-tube device in their immediate vicinity.

But, as a rule, on the pipeline, the distance between the signaling devices is large, amounting to units and tens of kilometers. In addition, as practice has shown, the applied signaling devices do not provide a 100% probability of operation when passing an in-tube device (projectile).

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As a result, for a long period of time, the in-tube projectile remains out of sight of the dispatchers, while the error in determining its location can be from several to tens of kilometers.

There is also known a device for determining the location of treatment and diagnostic shells in the pipeline 2, including a transmitter mounted on the shell and generating electromagnetic signals, and a receiver for receiving transmitter signals located above the pipeline. The transmitter emitting signals contains a sealed container with an autonomous power source, connected through an electronic key controlled by the power supply control unit, to a modulator, the output of which is connected to a generator, the output of the latter is connected to a radiating antenna, and the transmitter signal receiver contains a decoder, input which is connected to the output of the amplifier-converter, and the output is connected to a control and indication device.

The disadvantage of this device is that its radius of action is limited due to fast attenuation with the distance of electromagnetic radiation in the soil and in the pipe, the maximum allowable removal of the signal receiver from the transmitter is up to 10 m along the axis of the pipeline and up to 8 m from the longitudinal axis of the pipeline, which does not allow solve the problem of tracking shells over long distances.

The objective of the utility model is to create such a system for tracking in-tube shells that would provide continuous monitoring of the process of movement of in-tube shells over long distances from a control room.

The problem is solved due to the fact that the system for tracking in-tube shells, including a transmitter mounted on the shell, containing a sealed container with an autonomous power source, and a receiver located outside the pipeline and containing a decoder, the input of which is connected to the output of the signal converter module, according to the claimed useful the transmitter model is made in the form of an acoustic emitter of low-frequency signals, and the decoder is in the form of an acoustic signal processing and transmission module, the output of which is connected to a central computer.

The essence of the utility model is illustrated by the drawing, which shows a block diagram of the inventive system for tracking in-tube shells.

The tracking system for in-tube shells contains a transmitter made in the form of an acoustic emitter of low-frequency signals 1, fixed with unified fasteners to an in-tube shell 2 and equipped with an independent power source (not shown in the drawing), and a signal receiver including an acoustic sensor with a primary conversion module 3 installed on the oil pipeline 4, the signal processing and transmission module 5 and the central computer 7, and the output of the signal conversion module 3 s edinon processing to the input signal and the transmission unit 5, the output of which is connected via the information transmission lines and control signals with the central computer 6 7.

The system for tracking in-tube shells works as follows.

An acoustic emitter is mounted on the last flange of an in-tube projectile (treatment or diagnostic device) before being launched into the oil pipeline. During the movement of the projectile in the pipeline, an acoustic emitter emits packets of sound signals with a certain frequency.

Power can be supplied by galvanic cells. Before starting, the embedded processor software checks the health of the emitter and the quality of the batteries.

Sound signals sent by the emitter in a pipeline filled with oil are transmitted, as in a waveguide, and are received by the acoustic sensor of the primary signal conversion module. Installation of the primary signal conversion module on the existing oil pipeline is carried out on the plunger through a standard flange connection. In this module, the acoustic signal is filtered from noise and amplified to the required amplitude.

From the primary signal conversion module through the communication cable, which also provides power supply, the initially processed acoustic signal enters the signal processing and transmission module (MOS) located at a distance of up to 500 m. The basis of MOPS is an industrial computer, in which digital processing of the received signal takes place, the acoustic image sent by the emitter is extracted, information on the tracking progress is accumulated, the velocity and location of the projectile are calculated, and information is transmitted and transmitted via telemetry or communication channels. Information about the location and speed of the in-tube projectile is transmitted to the control center with a frequency of several minutes.

Packets of information about the location of the projectile sent by the IPO are received by the computer at the control room. The result of tracking an in-tube projectile is displayed on the screen in the form of a velocity graph indicating the location of the projectile. If necessary, tables of temporary escort events can also be displayed.

The developed system provides continuous monitoring of the process of movement of in-tube shells, allows using one acoustic sensor to track in-tube shells in a section of up to 100 km with an accuracy of 3%.

The technical and economic effect of the introduction of the system is achieved by reducing the time for stopping the pipeline, as well as the number of maintenance personnel and equipment during operations related to tracking, searching and cutting in-pipe shells, and ensuring the timely impact on the process of their movement.

Sources of information:

1. Operation and repair of oil pipelines and oil storage facilities / G.V. Krylov, A.A. Moroz, T.V. Sorokina, O.A. Stepanov. - M.: “Academy, 2002. p. 186-187

2. Patent for the invention of JV 2110729, M.cl. F17D5 / 00, published on 05/10/1998

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Claims (1)

An in-tube projectile tracking system including a transmitter mounted on a projectile containing a sealed container with an autonomous power source, and a receiver located outside the pipeline and containing a decoder, the input of which is connected to the output of the primary signal conversion module, characterized in that the transmitter is made in the form of a low-frequency acoustic emitter signals, and the decoder - in the form of an acoustic signal processing and transmission module, the output of which is connected to a central computer.