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Pipe locating device, pipe locating system and method of use thereof

A positioning device and positioning system technology, applied in the direction of measuring devices, radio wave measuring systems, pipes/pipe joints/pipe fittings, etc., can solve the problem of wheel odometer slipping or idling, inability to accurately locate the walking device in the pipe, wheel type It is difficult to accurately locate the odometer and other problems, and achieve the effect of simple structure, convenient operation and convenient manufacture

Active Publication Date: 2018-01-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The principle is that the wheel odometer is in contact with the inner wall of the pipeline, and the positioning is performed by measuring the number of cycles of the wheel odometer; however, the cumulative error of the wheel odometer is relatively large, and its error is 1 to 2‰, that is, to detect 20km When the pipeline is located, the cumulative positioning error is more than 20m; and this error has not considered the error caused by the wheel odometer itself slipping or idling, so it is difficult for the wheel odometer to accurately locate the traveling device in the pipe
[0005] 2. Use a magnetic positioning device for positioning, but at present the magnetic positioning device is composed of a permanent magnet and a measuring coil, which is usually used to detect the position of the pipe and the pipe joint, and use the actual position of the measuring pipe joint to provide other measurements Provide evidence; however, the magnetic positioning device can only roughly determine the position of the hoop, and its accuracy is not high, so it cannot accurately locate the running device in the pipe

Method used

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  • Pipe locating device, pipe locating system and method of use thereof
  • Pipe locating device, pipe locating system and method of use thereof
  • Pipe locating device, pipe locating system and method of use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Such as figure 1 As shown, the pipeline positioning device provided in this embodiment includes: a base 1 installed on the running device in the pipe; and at least two eddy current sensors 2 arranged on the base 1 spaced along the axial direction; wherein, the pipeline positioning The device is configured such that when each eddy current sensor 2 detects the existence of the corresponding positioning mechanism preset in the pipeline, it sends out a signal indicating that the specified position has been reached.

[0060] When in use, the pipeline positioning device is installed on the in-pipe running device through the base 1, and then the in-pipe running device is sent into the target pipeline and starts to walk. When the running device in the pipe moves to the corresponding position, multiple eddy current sensors 2 on the pipe positioning device will detect the existence of the positioning mechanism in the pipe at the same time, and send out a signal indicating that it...

Embodiment 2

[0069] Such as figure 2 and image 3 As shown, the pipeline positioning system provided in this embodiment includes the pipeline 3 and the pipeline positioning device described in the first embodiment above; wherein, at least two positioning mechanisms 31 spaced apart are formed in the pipeline 3 along the axial direction, The positioning mechanism 31 is configured such that the inner surface of the pipe 3 has a varying distance relative to the axis of the pipe 3 .

[0070] When in use, the pipeline positioning device is installed on the in-pipe running device through the base 1, and then the in-pipe running device is sent into the target pipeline and starts to walk. When the running device in the pipe moves to the corresponding position, multiple eddy current sensors 2 on the pipe positioning device will detect the existence of the positioning mechanism 31 in the pipe 3 at the same time, and send out a signal indicating that it has reached the designated position, thereby j...

Embodiment 3

[0081] The method for using the pipeline positioning system in the second embodiment above provided in this embodiment includes:

[0082] Pre-install the pipes on the target pipeline;

[0083] Install the pipe positioning device on the running device in the pipe;

[0084] Place the walking device in the tube into the target tube and start walking;

[0085] When the plurality of eddy current sensors all detect the existence of the corresponding positioning mechanism preset in the pipeline, a signal indicating that the designated position is reached is sent out, and the running device in the pipeline stops moving at the same time.

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Abstract

The invention provides a pipe positioning device. The pipe positioning device comprises a base which is installed in an in-pipe walking device and at least two electric eddy current sensors which are arranged on the base in a spaced manner along an axis direction, wherein the pipe positioning device is configured to give out a signal indicating that a designated position is reached when each electric eddy current sensor detects the existence of a corresponding positioning mechanism preset in a pipe. By using with the positioning mechanism in the pipe, the in-pipe walking device can be effectively positioned. The invention further provides a pipe positioning system, which can effectively position the in-pipe walking device. The invention further provides a using method of the pipe positioning system, which can effectively position the in-pipe walking device.

Description

technical field [0001] The invention relates to the technical field of pipeline detection equipment, in particular to a pipeline positioning device, a pipeline positioning system and a use method thereof. Background technique [0002] In-pipe walking devices (such as pipeline crawling robots, etc.) can be effectively used in pipeline detection in the field of oil well completion or pipeline transportation, so as to achieve the purpose of increasing oil and gas recovery and detecting the internal structure of pipelines. [0003] When the walking device in the pipe enters the pipeline, it needs to locate its walking position. There are two common positioning methods at present: [0004] 1. Install a wheel odometer on the running device in the pipe, and use the information provided by the wheel odometer to judge the distance traveled by the running device in the pipe, so as to locate the running device in the pipe. The principle is that the wheel odometer is in contact with th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/48G01V3/02F16L101/30
CPCF16L55/48F16L2101/30G01V3/02
Inventor 岳慧侯倩庞伟姚志良段友智彭汉修赵旭吴俊霞
Owner CHINA PETROLEUM & CHEM CORP