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CN201269749Y - High-temperature thickness measuring probe - Google Patents

High-temperature thickness measuring probe Download PDF

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Publication number
CN201269749Y
CN201269749Y CNU2008201520520U CN200820152052U CN201269749Y CN 201269749 Y CN201269749 Y CN 201269749Y CN U2008201520520 U CNU2008201520520 U CN U2008201520520U CN 200820152052 U CN200820152052 U CN 200820152052U CN 201269749 Y CN201269749 Y CN 201269749Y
Authority
CN
China
Prior art keywords
high temperature
damping block
piezoelectric chip
shell
thicknesser probe
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.)
Expired - Lifetime
Application number
CNU2008201520520U
Other languages
Chinese (zh)
Inventor
陆克昀
严晓东
杨菁
骆国防
兰吉勇
曹晖
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.)
ELECTRIC EQUIPMENT ENGINEERING Co Ltd OF SHANGHAI POWER EQUIPMENT RESEARCH INSTITUTE
East China Power Test and Research Institute Co Ltd
Shanghai Minghua Electric Power Technology and Engineering Co Ltd
Original Assignee
ELECTRIC EQUIPMENT ENGINEERING Co Ltd OF SHANGHAI POWER EQUIPMENT RESEARCH INSTITUTE
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 ELECTRIC EQUIPMENT ENGINEERING Co Ltd OF SHANGHAI POWER EQUIPMENT RESEARCH INSTITUTE, East China Power Test and Research Institute Co Ltd, Shanghai Minghua Electric Power Technology and Engineering Co Ltd filed Critical ELECTRIC EQUIPMENT ENGINEERING Co Ltd OF SHANGHAI POWER EQUIPMENT RESEARCH INSTITUTE
Priority to CNU2008201520520U priority Critical patent/CN201269749Y/en
Application granted granted Critical
Publication of CN201269749Y publication Critical patent/CN201269749Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

The utility model proposes a high-temperature thickness measuring probe which comprises a shell, a signal adaptor, a damping block and a piezoelectric crystal, wherein, the signal adaptor is arranged at the top part of the shell; the damping block and the piezoelectric crystal are arranged in the shell in an overlapped manner; the signal adaptor is connected with the piezoelectric crystal by a cable; a fixing device is arranged on the shell; the shell, the signal adaptor, the damping block, the piezoelectric crystal and the cable are made from high temperature resistant materials; and the contacting part of the shell and a cylinder wall to be measured is provided with mucilage glue. The high-temperature thickness measuring probe is fixed on the cylinder wall to be measured by a high-strength magnet ring and a heat curing boding technology, thereby being capable of reliably and continuously measuring the thickness of the inner cylinder wall of a high temperature chimney for a long term.

Description

The high temperature Thicknesser probe
Technical field
The utility model relates to a kind of ultrasonic thickness test probe, and is particularly related to a kind of high temperature Thicknesser probe that is applied under the hot environment.
Background technology
Ultrasonic thickness test is carried out thickness measure according to the ultrasonic pulse principle of reflection, when the pulse of probe ultrasonic waves transmitted arrives material interface by testee, pulse is reflected back toward probe, and the time of propagating in material by accurate measurement ultrasound wave is determined the thickness of measured material.All ultrasound waves that can make all can adopt this principle to measure with the various materials of constant speed portion's propagation within it.Can do accurately to measure to various sheet materials and various processing parts by the thicknessmeter of this principle design, also can monitor, monitor their attenuate degree after in use being corroded various pipelines and pressure vessel in the production equipment.
At present measurement fuel-burning power plant high temperature chimney internal cylinder wall thickness, use the ultrasonic thickness test transducer to convert electric pulse to ultrasound wave, import ultrasound wave into the cylindrical shell tube wall by coupling, accept the ultrasonic signal that cylinder inboard wall reflects, and be converted to the electric signal output processing that has wall thickness information.Yet at present general ultrasonic thickness test transducer is operate as normal at high temperature, because it is inaccurate that it is at high temperature measured, shorter poor reliability of life-span, and come off easily after the long-term work, therefore can not carry out long-term, reliable, continuous measurement to high temperature chimney internal cylinder wall thickness, can't obtain corroding flue gas the etch state of cylinder inboard wall and the situation of corrosion rate.
The utility model content
The utility model proposes a kind of high temperature Thicknesser probe, it can be applied to measure high temperature environment such as fuel-burning power plant high temperature chimney internal cylinder wall thickness, measures accurate and effective, and is easy to use, can carry out long-term, reliable, continuous measurement under hot environment.
In order to achieve the above object, the utility model proposes a kind of high temperature Thicknesser probe, comprise housing, signal converting head, damping block, piezoelectric chip, wherein said signal converting head is arranged on the top of described housing, place in the described housing to described damping block and described piezoelectric chip stacked on top of one another, described signal converting head is connected with described piezoelectric chip by cable, and described housing is provided with stationary installation, and wherein said housing, signal converting head, damping block, piezoelectric chip and cable are made by exotic material.
Further, described stationary installation is a magnet ring.
Further, described stationary installation is at high temperature to keep the material of magnetic to make.
Further, described piezoelectric chip is not provided with diaphragm with the one side that described damping block links to each other.
Further, described diaphragm is made by exotic material.
Further, described housing is provided with viscose glue with the part that wall to be measured contacts.
Further, described viscose glue is that viscose glue is binded in heat curing.
The element of the high temperature Thicknesser probe that the utility model proposes all is that exotic material is made; and under piezoelectric chip, be provided with diaphragm to prevent damage; high temperature Thicknesser probe of the present utility model is outside equipped with stationary installation and viscose glue at housing simultaneously; make this high temperature Thicknesser probe to be fixed on the barrel to be measured by high strength magnetic rings and heat curing adhesion process; therefore can carry out for a long time high temperature chimney internal cylinder wall thickness; reliably; continuous measurement; thereby obtain corroding flue gas to the etch state of cylinder inboard wall and the situation of corrosion rate, so that further analyze the gained data or take corresponding measure.
Description of drawings
Fig. 1 is described to be the structural representation of the utility model preferred embodiment.
Embodiment
In order more to understand technology contents of the present utility model, especially exemplified by specific embodiment and cooperate appended graphic being described as follows.
Please refer to Fig. 1, Fig. 1 is described to be the structural representation of the utility model preferred embodiment.The high temperature Thicknesser probe that the utility model proposes, comprise housing 100, signal converting head 200, damping block 300, piezoelectric chip 400, wherein said signal converting head 200 is arranged on the top of described housing 100, place in the described housing 100 to described damping block 300 and described piezoelectric chip 400 stacked on top of one another, described signal converting head 200 is connected with described piezoelectric chip 400 by cable 500, and described housing 100 is provided with stationary installation 600, wherein said housing 100, signal converting head 200, damping block 300, piezoelectric chip 400 and cable 500 are made by exotic material.
Damping block 300 except that the pulse width that influences pulse ultrasonic wave, can also suppress the radial vibration of piezoelectric chip 400.Piezoelectric chip 400 back sides add damping block 300, and purpose is in order to obtain narrow transponder pulse, and it mainly absorbs vibrational energy, stop very soon after making piezoelectric chip 400 be launched pulse excitation, have played the damping action to piezoelectric chip 400 vibrations thus.And the function of piezoelectric chip 400 is emission and reception ultrasound wave, and it is with the thickness vibration mode vibration, inspires compressional wave.When high frequency electric pulse was delivered to piezoelectric chip 400 and produces incentive action by cable 500, under the inverse piezoelectric effect effect, piezoelectric chip 400 produced telescopic shape change, converts electrical energy into acoustic energy, sends ultrasound wave.Ultrasonic signal arrives cylinder inboard wall and is reflected, and when ultrasonic signal arrives piezoelectric chip 400, direct piezo electric effect takes place, and acoustic energy is converted to electric energy, and the electric signal that promptly has wall thickness information is handled by cable 500 outputs.
According to the utility model preferred embodiment; described stationary installation 600 is a magnet ring; and stationary installation 600 is at high temperature still to keep the material of magnetic to make; described piezoelectric chip 400 is not provided with diaphragm 700 with the one side that described damping block 300 links to each other; described diaphragm 700 is made by exotic material; the function of diaphragm 700 is to avoid piezoelectric chip 400 directly to contact and the piezoelectric chip 400 that weares and teares with workpiece; simultaneously also protect piezoelectric chip 400 not to be bruised; and do not corroded by the corrosion flue gas of high temperature chimney barrel inside, also have the function of improving sound translative performance as intermediate medium.The part that described housing 100 of while contacts with wall to be measured is provided with viscose glue 800, and described viscose glue 800 is that viscose glue is binded in heat curing.
When desire is measured fuel-burning power plant high temperature chimney internal cylinder wall thickness etc. and is measured under hot environment, directly be placed on this high temperature Thicknesser probe on the barrel, the high temperature Thicknesser probe promptly firmly is fixed on the barrel to be measured by high strength magnetic and heat curing adhesion process, and can not make measurement lose efficacy or come off, and do not need personnel to be under the hot environment because of high temperature always.
The element of the high temperature Thicknesser probe that the utility model proposes all is that exotic material is made; and under piezoelectric chip, be provided with diaphragm to prevent damage; high temperature Thicknesser probe of the present utility model is outside equipped with stationary installation and viscose glue at housing simultaneously; make this high temperature Thicknesser probe to be fixed on the barrel to be measured by high strength magnetic and heat curing adhesion process; therefore can carry out for a long time high temperature chimney internal cylinder wall thickness; reliably; continuous measurement; thereby obtain corroding flue gas to the etch state of cylinder inboard wall and the situation of corrosion rate, so that further analyze the gained data or take corresponding measure.
Though the utility model discloses as above with preferred embodiment, so it is not in order to the qualification effect.Have in the affiliated technical field and know the knowledgeable usually, in not breaking away from spirit and scope of the present utility model, when being used for a variety of modifications and variations.Therefore, protection domain of the present utility model is as the criterion when looking claims person of defining.

Claims (7)

1. high temperature Thicknesser probe, comprise housing, signal converting head, damping block, piezoelectric chip, wherein said signal converting head is arranged on the top of described housing, place in the described housing to described damping block and described piezoelectric chip stacked on top of one another, described signal converting head is connected with described piezoelectric chip by cable, it is characterized in that described housing is provided with stationary installation, wherein said housing, signal converting head, damping block, piezoelectric chip and cable are made by exotic material.
2. high temperature Thicknesser probe according to claim 1 is characterized in that described stationary installation is a magnet ring.
3. high temperature Thicknesser probe according to claim 1 is characterized in that described stationary installation is at high temperature to keep the material of magnetic to make.
4. high temperature Thicknesser probe according to claim 1 is characterized in that described piezoelectric chip is not provided with diaphragm with the one side that described damping block links to each other.
5. high temperature Thicknesser probe according to claim 4 is characterized in that described diaphragm made by exotic material.
6. high temperature Thicknesser probe according to claim 1 is characterized in that described housing is provided with viscose glue with the part that wall to be measured contacts.
7. high temperature Thicknesser probe according to claim 6 is characterized in that described viscose glue is that viscose glue is binded in heat curing.
CNU2008201520520U 2008-08-15 2008-08-15 High-temperature thickness measuring probe Expired - Lifetime CN201269749Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201520520U CN201269749Y (en) 2008-08-15 2008-08-15 High-temperature thickness measuring probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201520520U CN201269749Y (en) 2008-08-15 2008-08-15 High-temperature thickness measuring probe

Publications (1)

Publication Number Publication Date
CN201269749Y true CN201269749Y (en) 2009-07-08

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CNU2008201520520U Expired - Lifetime CN201269749Y (en) 2008-08-15 2008-08-15 High-temperature thickness measuring probe

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102539848A (en) * 2010-12-21 2012-07-04 鸿富锦精密工业(深圳)有限公司 Probe assembly
CN103185555A (en) * 2011-12-27 2013-07-03 通用电气公司 Device for measuring material thickness
CN104422410A (en) * 2013-08-23 2015-03-18 上海金艺检测技术有限公司 Tool and method for detecting corrosion condition of warm bag of pipeline
CN110857852A (en) * 2018-08-24 2020-03-03 库洛泰克-Kts塑料技术有限责任公司 System for the non-destructive structural monitoring of structures and/or hollow bodies made of metallic, fibre-reinforced plastic or hybrid materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102539848A (en) * 2010-12-21 2012-07-04 鸿富锦精密工业(深圳)有限公司 Probe assembly
CN103185555A (en) * 2011-12-27 2013-07-03 通用电气公司 Device for measuring material thickness
CN104422410A (en) * 2013-08-23 2015-03-18 上海金艺检测技术有限公司 Tool and method for detecting corrosion condition of warm bag of pipeline
CN110857852A (en) * 2018-08-24 2020-03-03 库洛泰克-Kts塑料技术有限责任公司 System for the non-destructive structural monitoring of structures and/or hollow bodies made of metallic, fibre-reinforced plastic or hybrid materials

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CX01 Expiry of patent term

Granted publication date: 20090708

CX01 Expiry of patent term