CN102565192A - Detecting system for bolt of hydraulic generator and detecting method of detecting system - Google Patents

Detecting system for bolt of hydraulic generator and detecting method of detecting system Download PDF

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Publication number
CN102565192A
CN102565192A CN201010594700XA CN201010594700A CN102565192A CN 102565192 A CN102565192 A CN 102565192A CN 201010594700X A CN201010594700X A CN 201010594700XA CN 201010594700 A CN201010594700 A CN 201010594700A CN 102565192 A CN102565192 A CN 102565192A
Authority
CN
China
Prior art keywords
bolt
ultrasonic probe
hydrogenerator
ultrasonic
camera
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201010594700XA
Other languages
Chinese (zh)
Inventor
严晓东
张健勇
陆克昀
段鹏
朱兴兵
曾辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huadong Tianhuangping Pump Storage Co Ltd
East China Power Test and Research Institute Co Ltd
Shanghai Minghua Electric Power Technology and Engineering Co Ltd
Original Assignee
Huadong Tianhuangping Pump Storage Co Ltd
East China Power Test and Research Institute Co Ltd
Shanghai Minghua Electric Power Technology and Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huadong Tianhuangping Pump Storage Co Ltd, East China Power Test and Research Institute Co Ltd, Shanghai Minghua Electric Power Technology and Engineering Co Ltd filed Critical Huadong Tianhuangping Pump Storage Co Ltd
Priority to CN201010594700XA priority Critical patent/CN102565192A/en
Publication of CN102565192A publication Critical patent/CN102565192A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a detecting system for a bolt of a hydraulic generator and a detecting method of the detecting system. The detecting system comprises an ultrasonic probe, a camera, a video monitor and an ultrasonic detector, wherein the ultrasonic probe is used for emitting an ultrasonic pulse to the bolt of the hydraulic generator and receiving an ultrasonic pulse reflected by a crack of the bolt; the camera is used for monitoring the position of the ultrasonic probe; the video monitor is used for displaying the position of the ultrasonic probe which is monitored by the camera; the ultrasonic probe and the camera are arranged on a guiding frame used for adjusting the position of the ultrasonic probe; and the ultrasonic detector is connected with the ultrasonic probe and is used for carrying out waveform processing and displaying of an ultrasonic pulse reflected by the ultrasonic probe. The detecting system provided by the invention can simplify the detecting process and shorten the detecting time.

Description

The detection system of the bolt of hydrogenerator and detection method thereof
Technical field
The present invention relates to a kind of detection system and detection method thereof of bolt of hydrogenerator.
Background technology
Hydrogenerator is the important component part of hydraulic power plant's genset, and effect is can change water into electric energy.In order to change water into electric energy, need hydrogenerator be arranged in below the surface level usually, for example, hydrogenerator is fixed on the dam dam at the bottom of.At present, utilize the mode of the magnetic pole block of Bolt Connection hydrogenerator that the hydrogenerator magnetic pole is fixed usually.Because high speed rotating during the hydrogenerator operation; And start and stop are frequent; The bolt that the magnetic pole block connects causes fracture to cause the unit accident of " sweeping thorax " thereby fatigue crack takes place easily, thereby the safe operation of hydrogenerator is brought hidden danger under the effect of long-term pulsating stress and vibration.Because hydrogenerator magnetic pole block bolt is fixed on the position that manual work can not arrive and can't be visual usually; Therefore; When whether the bolt that will detect hydrogenerator cracks; Need special the shutdown so that bolt is dismantled detection, this testing process is complicated, and required length detection time reduces the unit utilization factor.
Summary of the invention
The object of the present invention is to provide a kind of detection system of bolt of the hydrogenerator that can simplify testing process, shorten detection time.
Another object of the present invention is to provide a kind of detection method of bolt of the hydrogenerator that can simplify testing process, shorten detection time.
A kind of detection system of bolt of hydrogenerator comprises: ultrasonic probe is used for to the bolt of said hydrogenerator emission ultrasonic pulse and receives the ultrasonic pulse of the crack reflection of said bolt; Camera is used to monitor the position of said ultrasonic probe; The video monitor appearance is connected with said camera, the position of the said ultrasonic probe that said video monitor appearance is used to show that said camera monitors; Guide frame, said ultrasonic probe and said camera are arranged at said guide frame, and said guide frame is used to adjust the position of said ultrasonic probe; Supersonic reflectoscope is connected with said ultrasonic probe, and said supersonic reflectoscope is used for the ultrasonic pulse of said ultrasonic probe reflection is carried out waveform processing and demonstration.
Preferred a kind of technical scheme of the detection system of the bolt of hydrogenerator of the present invention, said bolt are arranged in the magnetic pole block of said hydrogenerator.
Preferred a kind of technical scheme of the detection system of the bolt of hydrogenerator of the present invention, said ultrasonic probe are the miniature ultrasonic probes, and said camera is a minisize pick-up head.
Preferred a kind of technical scheme of the detection system of the bolt of hydrogenerator of the present invention, said camera is arranged at the top of said ultrasonic probe.
A kind of detection method of bolt of hydrogenerator comprises the steps: ultrasonic probe and camera are arranged on the guide frame; The position of the said ultrasonic probe that monitors according to said camera makes the position of said ultrasonic probe and said bolt relative thereby operate said guide frame; The said ultrasonic probe of stating is to said bolt emission ultrasonic pulse, and when said bolt had crackle, said ultrasonic probe received the ultrasonic pulse of the crack deflection of said bolt; Said supersonic reflectoscope carries out waveform processing and demonstration to the ultrasonic pulse of said ultrasonic probe reflection, and according to quality rule to judge the safety case of said bolt.
Preferred a kind of technical scheme of the detection method of the bolt of hydrogenerator of the present invention, said bolt are arranged in the magnetic pole block of said hydrogenerator.
Preferred a kind of technical scheme of the detection method of the bolt of hydrogenerator of the present invention, said ultrasonic probe are the miniature ultrasonic probes, and said camera is a minisize pick-up head.
Compared with prior art; The detection system of the bolt of hydrogenerator of the present invention is utilized the ultrasonic pulse principle of reflection to carry out the bolt underbead crack and is detected; When the pulse of said ultrasonic probe ultrasonic waves transmitted arrives crackle in bolt; Ultrasonic pulse is reflected back toward said ultrasonic probe, through to reflection wave waveform and Signal Processing, judges the quality condition of bolt.The detection system of the bolt of hydrogenerator of the present invention can not dismantled check to the box-like block attachment bolt of all kinds of hydrogenerator magnetic pole set; Guaranteed the hydrogenerator magnetic pole block attachment bolt quality safety of work under the pulsating stress state for a long time; Simplify testing process, shortened the repair time of hydrogenerator.
Description of drawings
Fig. 1 is the structural representation of detection system of the bolt of hydrogenerator of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the present invention is made further detailed description below in conjunction with accompanying drawing.
See also Fig. 1, Fig. 1 is the structural representation of detection system of the bolt of hydrogenerator of the present invention.Said bolt 16 is arranged in the magnetic pole block 17 of said hydrogenerator.Said hydrogenerator can be the high speed water turbine generator.The detection system of the bolt of said hydrogenerator comprises supersonic reflectoscope 11, video monitor appearance 12, guide frame 13, camera 14, ultrasonic probe 15.Preferably, said ultrasonic probe 15 is miniature ultrasonic probes, and said camera 14 is minisize pick-up heads.
Said ultrasonic probe 15 is oppositely arranged with said bolt 16, is used for to the bolt 16 emission ultrasonic pulses of said hydrogenerator and receives the ultrasonic pulse of the crack reflection of said bolt 16.Said supersonic reflectoscope 11 is connected with said ultrasonic probe 15, and said supersonic reflectoscope 11 is used for the ultrasonic pulse of said ultrasonic probe 15 reflections is carried out waveform processing and demonstration.Said ultrasonic probe 15 is arranged at said guide frame 13 with said camera 14, can adjust the position of said ultrasonic probe 15 through the position of adjusting said guide frame 13.Preferably, said camera 14 is arranged at the top of said ultrasonic probe 15.Said camera 14 is used to monitor the position of said ultrasonic probe 15.Said video monitor appearance 12 is connected with said camera 14; The position of the said ultrasonic probe 15 that is used to show that said camera 14 monitors; And then confirm that the position between said ultrasonic probe 15 and the said bolt 16 concerns; Through observing said video monitor appearance 12 images displayed and the said guide frame 13 of operation, can said ultrasonic probe 15 be adjusted to the working position that manual work can not arrive and can't be visual.
The detection method of the bolt of hydrogenerator of the present invention comprises the steps:
Ultrasonic probe 15 and camera 14 are arranged on the guide frame 13, make the video monitor appearance 12 that is connected with said camera 14 can clearly show the position of the said ultrasonic probe 15 that said camera 14 monitors.
Said guide frame 13 is operated in the position of the said ultrasonic probe 15 that monitors according to said camera 14, thereby makes said ultrasonic probe 15 relative with the position of said bolt 16.
Said ultrasonic probe 15 is to said bolt 16 emission ultrasonic pulses, and when there was crackle said bolt 16 inside, said ultrasonic probe 15 received the ultrasonic pulse of the crack deflection of said bolt 16.
The ultrasonic pulse of 11 pairs of said ultrasonic probe 15 reflections of said supersonic reflectoscope carries out waveform processing and demonstration, to judge the safety case of said bolt 16.Preferably, the waveform that shows through said supersonic reflectoscope 11 is judged the safety case of said bolt 16 according to " (characterization processes and bolt quality judging criterion ".
Compared with prior art; The detection system of the bolt of hydrogenerator of the present invention is utilized the ultrasonic pulse principle of reflection to carry out bolt 16 underbead cracks and is detected; When said ultrasonic probe 15 ultrasonic waves transmitted pulses arrive crackle in bolt 16; Ultrasonic pulse is reflected back toward said ultrasonic probe 15, through to reflection wave waveform and Signal Processing, judges the quality condition of bolt 16.The detection system of the bolt of hydrogenerator of the present invention can not dismantled check to the box-like block attachment bolt of all kinds of hydrogenerator magnetic pole set; Whether monitor said bolt 16 produces in operational process like dangerous defectives such as crackles; And can accurately judge its position and size; Guaranteed the hydrogenerator magnetic pole block attachment bolt quality safety of work under pulsating stress and vibrational state for a long time; Simplify testing process, shortened the repair time of hydrogenerator, improved the unit practical efficiency.
Under situation without departing from the spirit and scope of the present invention, can also constitute many very embodiment of big difference that have.Should be appreciated that except like enclosed claim limited, the invention is not restricted at the specific embodiment described in the instructions.

Claims (7)

1. the detection system of the bolt of a hydrogenerator is characterized in that, comprising:
Ultrasonic probe is used for to the bolt of said hydrogenerator emission ultrasonic pulse and receives the ultrasonic pulse of the crack reflection of said bolt;
Camera is used to monitor the position of said ultrasonic probe;
The video monitor appearance is connected with said camera, the position of the said ultrasonic probe that said video monitor appearance is used to show that said camera monitors;
Guide frame, said ultrasonic probe and said camera are arranged at said guide frame, and said guide frame is used to adjust the position of said ultrasonic probe;
Supersonic reflectoscope is connected with said ultrasonic probe, and said supersonic reflectoscope is used for the ultrasonic pulse of said ultrasonic probe reflection is carried out waveform processing and demonstration.
2. the detection system of the bolt of hydrogenerator as claimed in claim 1 is characterized in that, said bolt is arranged in the magnetic pole block of said hydrogenerator.
3. the detection system of the bolt of hydrogenerator as claimed in claim 1 is characterized in that, said ultrasonic probe is the miniature ultrasonic probe, and said camera is a minisize pick-up head.
4. the detection system of the bolt of hydrogenerator as claimed in claim 1 is characterized in that, said camera is arranged at the top of said ultrasonic probe.
5. the detection method of the bolt of a hydrogenerator is characterized in that, comprises the steps:
Ultrasonic probe and camera are arranged on the guide frame;
The position of the said ultrasonic probe that monitors according to said camera makes the position of said ultrasonic probe and said bolt relative thereby operate said guide frame;
Said ultrasonic probe is to said bolt emission ultrasonic pulse, and when said bolt had crackle, said ultrasonic probe received the ultrasonic pulse of the crack deflection of said bolt;
Said supersonic reflectoscope carries out waveform processing and demonstration to the ultrasonic pulse of said ultrasonic probe reflection, to judge the safety case of said bolt.
6. the detection method of the bolt of hydrogenerator as claimed in claim 5 is characterized in that, said bolt is arranged in the magnetic pole block of said hydrogenerator.
7. the detection method of the bolt of hydrogenerator as claimed in claim 5 is characterized in that, said ultrasonic probe is the miniature ultrasonic probe, and said camera is a minisize pick-up head.
CN201010594700XA 2010-12-17 2010-12-17 Detecting system for bolt of hydraulic generator and detecting method of detecting system Pending CN102565192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010594700XA CN102565192A (en) 2010-12-17 2010-12-17 Detecting system for bolt of hydraulic generator and detecting method of detecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010594700XA CN102565192A (en) 2010-12-17 2010-12-17 Detecting system for bolt of hydraulic generator and detecting method of detecting system

Publications (1)

Publication Number Publication Date
CN102565192A true CN102565192A (en) 2012-07-11

Family

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Family Applications (1)

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CN201010594700XA Pending CN102565192A (en) 2010-12-17 2010-12-17 Detecting system for bolt of hydraulic generator and detecting method of detecting system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103000003A (en) * 2012-12-29 2013-03-27 广西桂冠电力股份有限公司大化水力发电总厂 Bulb tubular water turbine generator set runner connecting bolt fracture warning device
CN106014042A (en) * 2016-06-30 2016-10-12 丰业迪睦斯(芜湖)汽车部件有限公司 Engine cover hinge Z-direction adjusting structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5475613A (en) * 1991-04-19 1995-12-12 Kawasaki Jukogyo Kabushiki Kaisha Ultrasonic defect testing method and apparatus
CN2534585Y (en) * 2002-03-25 2003-02-05 中国科学院金属研究所 Non-contact type water logging ultrasound flaw detector for sucker rod crack detection
JP2009281731A (en) * 2008-05-19 2009-12-03 Chubu Electric Power Co Inc Defect evaluation method of long member, and defect evaluation device of long member

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5475613A (en) * 1991-04-19 1995-12-12 Kawasaki Jukogyo Kabushiki Kaisha Ultrasonic defect testing method and apparatus
CN2534585Y (en) * 2002-03-25 2003-02-05 中国科学院金属研究所 Non-contact type water logging ultrasound flaw detector for sucker rod crack detection
JP2009281731A (en) * 2008-05-19 2009-12-03 Chubu Electric Power Co Inc Defect evaluation method of long member, and defect evaluation device of long member

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103000003A (en) * 2012-12-29 2013-03-27 广西桂冠电力股份有限公司大化水力发电总厂 Bulb tubular water turbine generator set runner connecting bolt fracture warning device
CN103000003B (en) * 2012-12-29 2015-06-17 广西桂冠电力股份有限公司大化水力发电总厂 Bulb tubular water turbine generator set runner connecting bolt fracture warning device
CN106014042A (en) * 2016-06-30 2016-10-12 丰业迪睦斯(芜湖)汽车部件有限公司 Engine cover hinge Z-direction adjusting structure

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120711

C02 Deemed withdrawal of patent application after publication (patent law 2001)