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Pipe externally-circumferential weld scanner

A scanner and outer ring technology, applied in the field of robots, can solve the problems of huge pipeline flaw detection engineering, high price, complicated design of pipeline ultrasonic detection device, etc. Effect

Pending Publication Date: 2017-02-22
ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, with the development of some large-scale oil and gas transportation projects in my country, such as the "West-to-East Gas Pipeline", the amount of pipeline flaw detection projects is even greater. The design of foreign pipeline ultrasonic testing devices is very complicated and the price is very high. Unable to meet the requirements of today's weld flaw detection

Method used

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  • Pipe externally-circumferential weld scanner
  • Pipe externally-circumferential weld scanner
  • Pipe externally-circumferential weld scanner

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Such as figure 1 , 2 As shown in and 3, the pipe outer ring weld seam scanner is mainly composed of a driving car assembly 1, a chain walking mechanism 2 and a probe adjustment mechanism 3. The driving car assembly 1 comprises a car body, a driving motor 1-1, a wheel 1-2 and a control box 1-3; four wheels 1-2 are arranged on both sides of the car body; the driving motor 1-1 and the control box 1-3 are all It is fixed on the car body; the drive motor 1-1 drives the wheel 1-2 through the gear reducer, so that the drive car assembly 1 moves along the pipeline 4 in the circumferential direction; the control box 1-3 controls the start and stop of the drive motor 1-1.

[0019] Such as figure 2 As shown, the chain walking mechanism 2 includes a pin 2-1, a long chain link 2-2, a chain link bolt 2-3, a short chain link 2-4, a roller 2-5, an adjusting ...

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Abstract

The invention discloses a pipe externally-circumferential weld scanner. Overseas ultrasonic pipeline inspection devices are complex in design. The pipe externally-circumferential weld scanner is characterized in that two ends of a vehicle body are hinged to one end of a first long chain link and one end of an nth long chain link through dowels respectively; except for the first long chain link and the nth long chain link, opposite ends of each two adjacent long chain links are hinged to two ends of a short chain link through chain link bolts; the other end of the first long chain link and the opposite end of the second long chain link are hinged to two ends of a short chain link through chain link bolts; two joint blocks are hinged to the opposite ends of the (n-1)th short chain link and the nth long chain link through chain link bolts and are connected through adjusting bolts; a rolling wheel is supported by each chain link bolt through a rolling bearing, and a probe adjusting mechanism is used for axial adjustment and radial positioning of scanning probes along a pipeline. The pipe externally-circumferential weld scanner can be suitable for pipelines within a certain diameter range through change of the chain link number and is capable of guaranteeing scanning process accuracy through the probe adjusting mechanism.

Description

technical field [0001] The invention belongs to the field of robots, and relates to a pipeline detection robot, in particular to a pipe outer girth weld seam scanner which can adapt to pipe diameter changes. Background technique [0002] Because oil and gas pipelines are usually buried on the seabed or exposed in the wilderness, they are often eroded by seawater or air. Oil and gas pipelines are mostly welded. In extreme environments, it is inevitable that the welds will be damaged to varying degrees. Therefore, it is necessary to perform flaw detection on the pipeline welds. Moreover, with the development of some large-scale oil and gas transportation projects in my country, such as the "West-to-East Gas Pipeline", the amount of pipeline flaw detection projects is even greater. The design of foreign pipeline ultrasonic testing devices is very complicated and the price is very high. It cannot meet the requirements of today's weld flaw detection. Therefore, in order to impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/265
CPCG01N29/04G01N29/265
Inventor 金永平胡明费森杰项春丁明明蔡丹云黄勇
Owner ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER
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