CN-121995026-A - Nondestructive testing equipment for surface defects of turbine blades

CN121995026ACN 121995026 ACN121995026 ACN 121995026ACN-121995026-A

Abstract

The embodiment of the disclosure provides surface defect nondestructive testing equipment for a turbine blade, which comprises a testing vehicle, a cleaning and self-adaptive attaching mechanism and an elastic connecting piece, wherein the testing vehicle is provided with an adsorption walking unit used for moving on the surface of the blade, and a testing component used for testing the surface defect of the blade, the cleaning and self-adaptive attaching mechanism is rotatably arranged on the testing vehicle and comprises a scraping plate unit capable of attaching to the surface of the blade, and the elastic connecting piece is connected between the scraping plate unit and the testing vehicle, and when the testing vehicle moves on the surface of the blade, the scraping plate unit is attached to the surface of the blade under the elastic action of the elastic connecting piece and scrapes greasy dirt and impurities on the surface of the blade.

Inventors

Yin zun
LIANG ZHAOHUI
LIANG YONGJI
YANG DAMAO
ZHANG JIHONG
LUO HAOMING
WANG PENG
CAI HUI
ZHANG HONGJUN
WANG JUNMIN
LI XIAOMENG
MENG GANG
WANG CONG
QI GUOYING

Assignees

西安热工研究院有限公司
华能铜川照金煤电有限公司

Dates

Publication Date: 20260508
Application Date: 20260410

Claims (10)

1. A surface defect nondestructive inspection apparatus for a turbine blade, comprising: The detection car is equipped with and is used for adsorbing the walking unit that removes at the blade surface to and be used for detecting the detection component of blade surface defect, still include: The cleaning and self-adaptive attaching mechanism is rotatably arranged on the detecting vehicle and comprises a scraping plate unit capable of attaching to the surface of the blade and an elastic connecting piece connected between the scraping plate unit and the detecting vehicle; When the detection vehicle moves on the surface of the blade, the scraping plate unit is configured to be attached to the surface of the blade under the elastic action of the elastic connecting piece, and oil dirt and impurities on the surface of the blade are scraped.
2. The apparatus according to claim 1, wherein the cleaning and adaptive fitting mechanism comprises a fixing plate fixedly connected to the inspection vehicle, and a connecting plate connected to the fixing plate; The scraping plate unit comprises a connecting strip which is rotationally connected with the connecting plate and an arc-shaped plate which is connected with the connecting strip; the elastic connecting piece comprises a first elastic element arranged between the arc-shaped plate and the connecting strip and a second elastic element connected between the arc-shaped plate and the connecting plate.
3. The nondestructive testing device for surface defects of a turbine blade according to claim 2, wherein the inner wall of the arc plate is provided with an arc groove, and the first elastic element is arranged in the arc groove; The connecting strip is provided with a sliding block at the position corresponding to the arc-shaped plate, one end of the first elastic element is connected with the inner wall of the arc-shaped groove, and the other end of the first elastic element is connected with the sliding block.
4. A surface defect nondestructive inspection apparatus for steam turbine blade according to claim 3 wherein one end of the second elastic member is connected to the inner wall of the arcuate plate and the other end is connected to the connecting plate.
5. The apparatus for non-destructive inspection of surface defects for a turbine blade according to claim 2, further comprising an auxiliary obstacle surmounting mechanism, said auxiliary obstacle surmounting mechanism comprising: The rotating assembly is rotationally connected to the scraper unit; And the swinging assembly is connected in the sliding groove at the top of the detection vehicle in a sliding way and is rotationally connected with the scraper unit.
6. The apparatus for non-destructive inspection of surface defects of a turbine blade according to claim 5, wherein said rotating assembly comprises: the arc-shaped rod is rotationally connected with the scraping plate unit, and a moving groove is formed in the side wall of the arc-shaped rod; The connecting block is connected to the side wall of the connecting plate and is slidably connected in the moving groove; when the scraper unit is stressed to rotate downwards, the arc-shaped rod is driven to move, so that the top of the arc-shaped rod is abutted against and pushes the scraper unit, and the scraper unit is assisted to rotate.
7. The apparatus for non-destructive inspection of a surface defect of a turbine blade according to claim 5, wherein said wobble assembly comprises: the moving block is connected in the sliding groove in a sliding way; the connecting rod is rotationally connected with the moving block; One end of the fixed block is rotationally connected with the connecting rod, and the other end of the fixed block is rotationally connected with the scraper unit; when the scraper unit rotates, the moving block is driven to slide in the sliding groove through the fixed block and the connecting rod.
8. The nondestructive inspection apparatus for surface defects of turbine blade as set forth in claim 7, wherein the bottom of the sliding groove is provided with an inclined surface, wherein the moving block is guided by its movement locus when sliding in the sliding groove.
9. The nondestructive testing apparatus for surface defects of a turbine blade according to claim 1, wherein the suction traveling unit comprises a suction pump provided to the test carriage and a suction cup communicating with the suction pump, wherein the suction pump performs alternate suction by controlling the suction cup to drive the test carriage to move.
10. The apparatus according to claim 1, wherein the inspection assembly includes a detector provided in the inspection vehicle, and a transmission head for transmitting inspection data.

Description

Nondestructive testing equipment for surface defects of turbine blades Technical Field The embodiment of the disclosure belongs to the technical field of turbine blade detection, and particularly relates to nondestructive testing equipment for surface defects of turbine blades. Background The device integrates an advanced sensing technology and a precision detection system of an automatic platform, generally adopts high-resolution optical imaging as a core detection means, carries a miniature probe by using a wall climbing robot, automatically scans on a complex curved surface of a blade, realizes high-precision and high-efficiency assessment on the state of the blade, and is key equipment for guaranteeing safe operation of a generator set. In the use of the device, the detection device is placed at the inlet of the steam turbine without the uncovering cylinder by a worker, then the detection vehicle is started to move on the surface of the blade after working, at the moment, the small adsorption pump in the detection vehicle is used for alternately sucking air through the small suction disc, so that the detection vehicle can move on the surface of the blade for detection, and as the external surface of the blade after working in the steam turbine can be attached with partial oil dirt and other impurities, the situation that the detection vehicle is unstable or slips due to the influence of the oil dirt and other impurities on the external surface of the blade when the detection vehicle is attached to the surface of the blade through the small adsorption pump and the small suction disc is easy to occur, and the stability of the device during moving detection is reduced, so that the detection quality and the detection efficiency of the device during detecting the damaged condition of the surface of the blade are influenced. Therefore, how to solve the above-mentioned problems is a technical problem to be solved by those skilled in the art. Disclosure of Invention Embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art, and provide a nondestructive testing apparatus for surface defects of a turbine blade. In one aspect of the embodiments of the present disclosure, there is provided a surface defect nondestructive inspection apparatus for a turbine blade, comprising: The detection car is equipped with and is used for adsorbing the walking unit that removes at the blade surface to and be used for detecting the detection component of blade surface defect, still include: The cleaning and self-adaptive attaching mechanism is rotatably arranged on the detecting vehicle and comprises a scraping plate unit capable of attaching to the surface of the blade and an elastic connecting piece connected between the scraping plate unit and the detecting vehicle; When the detection vehicle moves on the surface of the blade, the scraping plate unit is configured to be attached to the surface of the blade under the elastic action of the elastic connecting piece, and oil dirt and impurities on the surface of the blade are scraped. Optionally, the cleaning and self-adaptive attaching mechanism includes a fixing plate fixedly connected to the detection vehicle, and a connecting plate connected to the fixing plate; The scraping plate unit comprises a connecting strip which is rotationally connected with the connecting plate and an arc-shaped plate which is connected with the connecting strip; the elastic connecting piece comprises a first elastic element arranged between the arc-shaped plate and the connecting strip and a second elastic element connected between the arc-shaped plate and the connecting plate. Optionally, an arc groove is formed in the inner wall of the arc plate, and the first elastic element is arranged in the arc groove; The connecting strip is provided with a sliding block at the position corresponding to the arc-shaped plate, one end of the first elastic element is connected with the inner wall of the arc-shaped groove, and the other end of the first elastic element is connected with the sliding block. Optionally, one end of the second elastic element is connected with the inner wall of the arc-shaped plate, and the other end of the second elastic element is connected with the connecting plate. Optionally, the device further comprises an auxiliary obstacle surmounting mechanism, and the auxiliary obstacle surmounting mechanism comprises: The rotating assembly is rotationally connected to the scraper unit; And the swinging assembly is connected in the sliding groove at the top of the detection vehicle in a sliding way and is rotationally connected with the scraper unit. Optionally, the rotating assembly includes: the arc-shaped rod is rotationally connected with the scraping plate unit, and a moving groove is formed in the side wall of the arc-shaped rod; The connecting block is connected to the side wall of the connecting plate and is slidably connected