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Probe and scanning device for detecting turbine partition plate weld joint ultrasonic phased array

An ultrasonic phased array and scanning device technology, applied in the field of inspection, can solve the problems of inability to guarantee the safety of the weld, easy to miss inspection, low efficiency, etc., and achieve the effect of compact structure, no blind area, and flexible operation.

Inactive Publication Date: 2016-02-10
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional detection method generally uses a single array element for ultrasonic detection. This traditional detection method is inefficient, easy to miss detection, and cannot guarantee the safety of the weld

Method used

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  • Probe and scanning device for detecting turbine partition plate weld joint ultrasonic phased array
  • Probe and scanning device for detecting turbine partition plate weld joint ultrasonic phased array
  • Probe and scanning device for detecting turbine partition plate weld joint ultrasonic phased array

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Embodiment Construction

[0020] The present invention is further described in conjunction with the following examples.

[0021] Such as figure 1 As shown, a probe and scanning device for ultrasonic phased array detection of steam turbine diaphragm welds, including water coupling electric watering can, wedge 2, ultrasonic phased array control probe 3, trolley 4, encoder 5 and wedge The clamping frame 6; the function of the water coupling electric watering can is to spray water to ensure the good coupling between the ultrasonic phased array probe 3 and the measured workpiece 8; In the frame 6; the ultrasonic phase array control probe 3 is installed on the wedge 2; the water coupling electric watering can water inlet nozzle 1 of the water coupling electric watering can for water injection is located on the wedge 2; the encoder 5 is installed on the wedge 2 On the frame of the trolley 4, it is used to record the scanning trajectory; the trolley 4 is equipped with a wheel 7 that is in contact with the sur...

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Abstract

The invention discloses a probe and scanning device for detecting a turbine partition plate weld joint ultrasonic phased array. The probe and scanning device comprises a water coupling electric sprinkling can, a wedge block, an ultrasonic phased array control probe, a trolley, an encoder and a wedge block clamping frame. The wedge is assembled on the wedge block clamping frame located on the trolley. The ultrasonic phased array control probe is installed on the wedge block. A water coupling electric sprinkling can water inlet nozzle of the water coupling electric sprinkling can used for water injection is located on the wedge block; the encoder is installed on a frame of the trolley; the trolley is provided with wheels used for making contact with the surface of a detected workpiece; the encoder rolls along with the wheel and records the movement track of the scanning device on the detected workpiece and transmits data to an ultrasonic phase control instrument connected with the encoder.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a probe and a scanning device for ultrasonic phased array detection of a steam turbine diaphragm weld seam. Background technique [0002] The diaphragm is an important part of the steam turbine. The welded diaphragm is composed of a plate body, shroud, guide vane, outer edge, etc., and bears a uniform load formed by the front and rear pressure difference during work. There have been many accidents in the use of partitions in our country. For example, on January 26, 2003, a vicious accident occurred in the 1# machine of Shenhai Thermal Power Plant due to the collision between the 16th grade medium pressure partition and the moving blade. All the plates were disintegrated, the 13th to 15th stage partitions were partially damaged, and the medium pressure rotor was severely deformed. This is because the early deformation of the partition is due to the design, but the poor welding ...

Claims

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Application Information

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IPC IPC(8): G01N29/265
Inventor 李文胜何成廖伟良纪轩荣赵建平艾红刘阳王欣欣蔡庆生徐凯游溢
Owner STATE GRID CORP OF CHINA
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