CN114018158A - Non-contact three-dimensional thermal displacement detection system and application thereof - Google Patents
Non-contact three-dimensional thermal displacement detection system and application thereof Download PDFInfo
- Publication number
- CN114018158A CN114018158A CN202111289798.2A CN202111289798A CN114018158A CN 114018158 A CN114018158 A CN 114018158A CN 202111289798 A CN202111289798 A CN 202111289798A CN 114018158 A CN114018158 A CN 114018158A
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- computer control
- control system
- contact
- displacement detection
- vision processing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a non-contact three-dimensional thermal displacement detection system and application thereof. The embodiment of the invention provides a non-contact three-dimensional thermal displacement detection system and application thereof.
Description
Technical Field
The invention relates to the field of machinery, in particular to a non-contact three-dimensional thermal displacement detection system and application thereof.
Background
The boiler of the thermal power plant faces numerous tests of thermal expansion and heat release shrinkage in the working process, the boiler body or corresponding parts can deform and displace due to heating or heat release, and if the generated stress exceeds the capability of bearing strain of corresponding parts, accidents influencing safe operation can be caused, and the safe operation of a coal-fired power plant is seriously threatened. At present, a power plant boiler is provided with a mechanical pointer type expansion indicator for measuring deformation caused by thermal expansion of the boiler, data of the wall surface of the boiler and each monitoring point of a steam-water system are recorded on site in a manual inspection mode, and then offline processing is carried out. The data monitored by the processing mode are discontinuous, the real-time performance is poor, the automation degree is low, the labor amount is large, and the high-efficiency and safe production requirements of a power plant are difficult to meet.
Disclosure of Invention
The invention aims to provide a non-contact three-dimensional thermal displacement detection system and application thereof, and aims to solve the problems that in the prior art, monitored data are discontinuous, real-time performance is poor, automation degree is low, labor amount is large, and efficient and safe production requirements of a power plant are difficult to meet.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to a first aspect of the embodiments of the present invention, a non-contact three-dimensional thermal displacement detection system is provided, which includes a binocular camera, a laser range finder, a vision processing cabinet and a computer control system, wherein the binocular camera and the laser range finder collect displacement signals, then transmit the collected signals to the vision processing cabinet, and the vision processing cabinet transmits the signals to the computer control system.
Preferably, the computer control system comprises a host computer and a display connected with the host computer.
Preferably, the non-contact three-dimensional thermal displacement detection system further comprises an alarm system connected with the computer control system, and when the parameters received by the computer control system exceed a preset range, the alarm system starts to work.
Preferably, the alarm system comprises a horn and/or a warning light.
Preferably, a working position is arranged on one side of the vision processing cabinet, and the computer control system is installed on the working position.
Preferably, the vision processing cabinet is provided with a support, and the binocular camera and the laser range finder are installed on the support.
Preferably, the non-contact three-dimensional thermal displacement detection system further comprises an infrared imager, and the infrared imager is fixed on the bracket.
According to a second aspect of the embodiments of the present invention, an application of a non-contact three-dimensional thermal displacement detection system in real-time online monitoring of an expansion amount of a pressure container is provided.
The embodiment of the invention has the following advantages: the embodiment of the invention provides a non-contact three-dimensional thermal displacement detection system and application thereof, wherein the non-contact three-dimensional thermal displacement detection system comprises a binocular camera, a laser range finder, a vision processing cabinet and a computer control system, the whole system adopts an artificial intelligence technology, a measurement mode of parameters such as boiler expansion amount, pipeline displacement amount and the like is realized, automatic early warning can be realized on the safe operation of equipment, the intelligent level of a power plant is improved, the safe production coefficient of the power plant is improved, economic benefits are obtained for the power plant, and the digital construction and intelligent operation of the power plant are led.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a non-contact three-dimensional thermal displacement detection system according to embodiment 1 of the present invention;
FIG. 2 is a prior art mechanical pointer-type expansion indicator;
description of reference numerals: 1-laser range finder; 2-a vision processing cabinet; 3-computer control system.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "mounted," "connected," and "connected" are used in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1, the embodiment provides a non-contact three-dimensional thermal displacement detection system, which includes a binocular camera, a laser range finder 1, a vision processing cabinet 2 and a computer control system 3, wherein the binocular camera and the laser range finder 1 collect displacement signals, then transmit the collected signals to the vision processing cabinet 2, and the vision processing cabinet 2 transmits the signals to the computer control system 3.
Preferably, the computer control system 3 includes a host computer and a display connected to the host computer.
Preferably, the non-contact three-dimensional thermal displacement detection system further comprises an alarm system connected with the computer control system 3, and when the parameters received by the computer control system 3 exceed a preset range, the alarm system starts to work.
Preferably, the alarm system comprises a horn and/or a warning light.
Preferably, a working position is arranged on one side of the vision processing cabinet 2, and the computer control system 3 is installed on the working position.
Preferably, the vision processing cabinet 2 is provided with a support, and the binocular camera and the laser range finder are installed on the support.
Preferably, the non-contact three-dimensional thermal displacement detection system further comprises an infrared imager, and the infrared imager is fixed on the bracket.
According to a second aspect of the embodiments of the present invention, an application of a non-contact three-dimensional thermal displacement detection system in real-time online monitoring of an expansion amount of a pressure container is provided.
The design principle of the invention is as follows: the utility boiler body or the corresponding part can generate deformation and displacement due to heating or heat release, taking the boiler body as an example, an expansion center is arranged, and expansion zero points in the depth and width directions of the boiler are arranged on the central line of the depth and width of a hearth; the expansion zero point in the vertical direction is arranged at the top of the large encloser on the furnace top. The displacement amounts of all the bearing members are relative to the expansion zero point. The farther the expansion zero point is, the higher the temperature and the pressure are applied, and the larger the expansion displacement amount is. The maximum expansion amount of the boiler unit can reach 400 mm. The invention replaces the original mechanical pointer type expansion indicator (as shown in figure 2), changes the original contact type measurement into non-contact type measurement, the acquisition of the displacement is completed by a binocular camera and a laser range finder 1, the acquired data is transmitted to a visual processing cabinet 2, and finally the data is transmitted to a control computer control system 3, the real-time online monitoring of the expansion amount of the pressure container is realized through the non-contact type measurement, so that the working personnel can master the change curve of the whole expansion process of the pressure container, and the analysis, prediction and judgment are carried out according to the change curve, and the early warning is given, thereby improving the use safety of the pressure container of the power station, and improving the measurement monitoring management level of the expansion displacement of the pressure container.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A non-contact three-dimensional thermal displacement detection system is characterized in that: including binocular camera, laser range finder, vision processing cabinet and computer control system, binocular camera and laser range finder carry out signal acquisition to the displacement, later with the signal transmission of gathering to the vision processing cabinet, the vision processing cabinet is with signal transmission to computer control system.
2. The system of claim 1, wherein: the computer control system comprises a computer host and a display connected with the computer host.
3. The system of claim 1, wherein: the alarm system is connected with the computer control system, and starts to work when the parameters received by the computer control system exceed the preset range.
4. The system of claim 3, wherein: the alarm system comprises a horn and/or a warning light.
5. The system of claim 3, wherein: one side of the vision processing cabinet is provided with a working position, and the computer control system is arranged on the working position.
6. The system of claim 1, wherein: the vision processing cabinet is provided with a support, and the binocular camera and the laser range finder are installed on the support.
7. The system of claim 6, wherein: the infrared imaging device is fixed on the bracket.
8. Use of a non-contact three-dimensional thermal displacement detection system according to any one of claims 1-7 for real-time online monitoring of the expansion of a pressure vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111289798.2A CN114018158A (en) | 2021-11-02 | 2021-11-02 | Non-contact three-dimensional thermal displacement detection system and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111289798.2A CN114018158A (en) | 2021-11-02 | 2021-11-02 | Non-contact three-dimensional thermal displacement detection system and application thereof |
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| Publication Number | Publication Date |
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| CN114018158A true CN114018158A (en) | 2022-02-08 |
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| CN202111289798.2A Pending CN114018158A (en) | 2021-11-02 | 2021-11-02 | Non-contact three-dimensional thermal displacement detection system and application thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002243414A (en) * | 2001-01-03 | 2002-08-28 | Carl-Zeiss-Stiftung Trading As Carl Zeiss | Location fixing method and device |
| CN1616920A (en) * | 2003-11-14 | 2005-05-18 | 北京理工大学 | Active real-time three-dimensional positioning system based on binocular vision and laser distance detection |
| CN205384238U (en) * | 2016-03-08 | 2016-07-13 | 华北电力大学（保定） | Three -dimensional thermal expansion displacement real -time supervision early warning system of power station pressure vessel |
| CN205909857U (en) * | 2016-05-11 | 2017-01-25 | 深圳钰湖电力有限公司 | Intelligent all -round real -time monitoring system of power plant |
| CN107091610A (en) * | 2017-04-19 | 2017-08-25 | 清华大学 | The Three-Dimensional Dynamic on-line measurement device and its measuring method of a kind of large scale structure |
| CN108317953A (en) * | 2018-01-19 | 2018-07-24 | 东北电力大学 | A kind of binocular vision target surface 3D detection methods and system based on unmanned plane |
| CN108415390A (en) * | 2018-03-21 | 2018-08-17 | 中国航空工业集团公司北京长城航空测控技术研究所 | Boiler expansion displacement real time on-line monitoring system and node networking method |
-
2021
- 2021-11-02 CN CN202111289798.2A patent/CN114018158A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002243414A (en) * | 2001-01-03 | 2002-08-28 | Carl-Zeiss-Stiftung Trading As Carl Zeiss | Location fixing method and device |
| CN1616920A (en) * | 2003-11-14 | 2005-05-18 | 北京理工大学 | Active real-time three-dimensional positioning system based on binocular vision and laser distance detection |
| CN205384238U (en) * | 2016-03-08 | 2016-07-13 | 华北电力大学（保定） | Three -dimensional thermal expansion displacement real -time supervision early warning system of power station pressure vessel |
| CN205909857U (en) * | 2016-05-11 | 2017-01-25 | 深圳钰湖电力有限公司 | Intelligent all -round real -time monitoring system of power plant |
| CN107091610A (en) * | 2017-04-19 | 2017-08-25 | 清华大学 | The Three-Dimensional Dynamic on-line measurement device and its measuring method of a kind of large scale structure |
| CN108317953A (en) * | 2018-01-19 | 2018-07-24 | 东北电力大学 | A kind of binocular vision target surface 3D detection methods and system based on unmanned plane |
| CN108415390A (en) * | 2018-03-21 | 2018-08-17 | 中国航空工业集团公司北京长城航空测控技术研究所 | Boiler expansion displacement real time on-line monitoring system and node networking method |
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