CN103471720B - For heat treated infrared real-time temperature measurement system and the method for spraying - Google Patents
For heat treated infrared real-time temperature measurement system and the method for spraying Download PDFInfo
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- CN103471720B CN103471720B CN201310364423.7A CN201310364423A CN103471720B CN 103471720 B CN103471720 B CN 103471720B CN 201310364423 A CN201310364423 A CN 201310364423A CN 103471720 B CN103471720 B CN 103471720B
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Abstract
The present invention is open a kind of for heat treated infrared real-time temperature measurement system and the method for spraying, temp measuring system comprises infrared thermometer, purges protective device and host computer, and host computer comprises timing module, Survey control module, data memory module, peak value computing module, peak records module, computing module and display module; Purging protective device is arranged on the logical light mouth of infrared thermometer front end, for blowing away steam and the oxide skin of roller surface; Temp measuring method comprise according to specified time interval thermometric, try to achieve each moment peak value, peak average value in the unit of account time and by time the step such as m-average data output display.Structure of the present invention is simple, reasonable in design, and effectively can reduce the factor interference such as steam, temperature measurement error is little, accuracy is high, and can obtain clear, level and smooth temperature curve.
Description
Technical field
The present invention relates to a kind of temp measuring system and temp measuring method, infrared temperature measurement system used and temp measuring method when being specifically related to a kind of large-scale roller rotating spraying thermal treatment.
Background technology
The mechanical property of roll affects the work efficiency of milling train and the principal element of roll working life.When roll material is certain, improve the mechanical property of roll, key is the thermal treatment quality improving roll, and the committed step affecting roll thermal treatment quality is the control to cooling velocity in quenching process.In general, when other factors are certain, cooling velocity is faster, and the quenching structure crystal grain obtained is more tiny, intensity, hardness and wearing quality are all better, but, if cooling velocity is too fast, roll internal stress then can be caused excessive, easily cause distortion even to ftracture, cause workpiece to be scrapped.Therefore, in quenching process, the temperature on breaker roll surface carries out detecting in real time having very important significance.
At present, the type of cooling of roller quenching many employings fog quenching.So-called fog quenching refers to and utilizes nozzle to be mixed with heat eliminating medium by swiftly flowing pressurized air, because compressed-air actuated high speed impact effect makes liquid coolant be atomized, then a large amount of droplets is sprayed onto on high temperature workpiece to be quenched at high speed, makes workpiece cool fast and complete the technology of quenching.This type of cooling has the advantages such as cooling is even, controllability is strong, cooling power adjustable extent is large.
In the process of fog quenching, conventional temperature measuring equipment is divided into contact temperature-measuring device and non-contact temperature measuring device two kinds.Contact temperature-measuring device adopts thermopair as main temperature element usually, and thermopair contacts with roller surface, and by shielded conductor, the temperature signal recorded is passed to thermograph system.This temp measuring method is little by the impact of fog, steam, the true temperature of the data recorded relatively roller surface, but, in the process of fog quenching, because roll is in rotation status always, between thermopair with roll, inevitably there is phase mutual friction, such one side can damage roller surface, can be worn and torn thermopair on the other hand, and production cost is higher, and thus Application comparison is few.Contactless temperature-measuring method adopts infrared thermometer as main temperature-measuring part usually, during thermometric, the radiation energy of roller surface measured by infrared thermometer, and by planck formula and correlation computations, obtain the temperature of roller surface, this temp measuring method, compared with contact temperature-measuring method, has the advantages such as the response time is fast, nothing is worn and torn, easy for installation, thus applies more extensive.
Traditional infrared thermometer comprises generating laser, optical system, data handling system and display.The laser beam that generating laser sends is sent by the Tong Guangkou of infrared thermometer front end, measured object forms a hot spot, thus determine the position of measurement point, now the optical system of infrared thermometer receives the infrared energy from measurement point, the data handling system of infrared thermometer calculates the temperature of current measurement point according to the size of infrared energy, and is shown on display by this temperature value.In the process of fog quenching, there is a large amount of steam, fog in roller surface, inevitably there is one deck oxide skin in roller surface simultaneously, and traditional infrared thermometer does not have corresponding antijamming capability, therefore, these factors can have very large interference to the thermometric process of routine, cause temperature-measuring results chaotic, with the problem such as actual temperature gap is excessive, have a strong impact on thermometric and the control procedure of fog quenching process, cause cooling velocity too fast or excessively slow, and then cause roll thermal treatment not up to standard, cause the wasting of resources and economic loss.
In large-scale roller rotating spraying quenching heat treatment process, need blast and the hydraulic pressure of constantly adjustment fog quenching system, air quantity and the water yield, the water smoke concentration of whole process alters a great deal with room and time, and due to environmental influence, high-temperature vapor rises to certain altitude, water droplet can be condensed into again settle out, be mixed in the water smoke environment of generation, water fog medium field in roller surface certain distance is very unstable, and, in roll heat treatment process, roll is in rotary motion state always, due to the contact action of roll and back-up roller, periodic jamming signals is there is in process, comprise the formation of moisture film and the expansion of flowing and iron scale and peel off, if there is no special digital filtering technique, be difficult to obtain level and smooth temperature curve.
Summary of the invention
The technical issues that need to address of the present invention are to provide that a kind of water resistant mist interference performance is strong, the clear spraying infrared real-time temperature measurement system of thermal treatment of large-scale roller accurately of temperature-measuring results and temp measuring method, to solve traditional temp measuring system when fog quenching easily by the interference of the factors such as steam, water smoke, oxide skin, cause the problem of temperature-measuring results confusion.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
For heat treated infrared real-time temperature measurement system of spraying, comprise infrared thermometer, the host computer purging protective device and be connected by Shielded Twisted Pair with infrared thermometer, host computer comprises the timing module in writing time and setting moment in the thermometric time interval, the Survey control module of the control infrared thermometer be connected with timing module, for store measured by infrared thermometer moment-data memory module of temperature value, for comparing temperature value size that infrared thermometer measures and drawing the peak value computing module of the temperature peak in a certain moment, for record moment-the peak records module of peak-data, according in peak records module moment-the peak-data unit of account time in the computing module of temperature peak mean value and display module that the result of calculation of computing module is exported,
Described purging protective device is arranged on the logical light mouth of infrared thermometer front end; purge protective device and comprise a pressurized air mozzle; pressurized air mozzle is provided with and the pressurized air access tube that is communicated with of pressurized air mozzle inside, the front end of pressurized air mozzle is provided with the pressurized air afflux that the aperture corresponding with the infrared beam that infrared thermometer is launched be greater than the infrared beam diameter that infrared thermometer is launched and exports.
Further improvement of the present invention is: described peak value computing module is the temperature value data read successively in chronological order in data memory module, and the temperature value in the first moment is defined as the temperature peak in the first moment, the calculating of the temperature peak in other moment the temperature value of current time and the temperature value in a upper moment to be compared and using the temperature peak of large for temperature value person as current time, and by moment-peak value is stored into peak records module.
Further improvement of the present invention is: described computing module is the temperature peak in each moment of reading successively in chronological order in peak records module, and obtained the mean value of the temperature in the per unit time by the mode of the arithmetic average of the temperature peak in the some moment in the unit of account time, and the average data of Time-temperature is input in display module.
Further improvement of the present invention is: the pressurized air mozzle of described purging protective device is connected to the outside of the logical light mouth of infrared thermometer front end by the web member that has central through hole; the central through hole of web member and the logical light mouth of infrared thermometer are coaxially arranged, and are also provided with the printing opacity catch of logical light mouth by infrared thermometer and pressurized air duct lumen seal isolation between web member and the logical light mouth of infrared thermometer.
Further improvement of the present invention is: described pressurized air access tube and pressurized air mozzle are that 60 ° ~ 80 ° angles are arranged, the mouth of pipe of pressurized air access tube is exported towards the pressurized air afflux of pressurized air mozzle.
For heat treated infrared real time temperature measurement method of spraying, temp measuring system used comprises the infrared thermometer being connected with purging protective device and the host computer be connected by Shielded Twisted Pair with infrared thermometer, and host computer comprises timing module, Survey control module, data memory module, peak value computing module, peak records module, the computing module calculating peak average value and the display module result of calculation of computing module exported; Described temp measuring method is as follows:
The surface of roll to be measured will be aimed at the infrared thermometer purging protective device, start temp measuring system, timing module is started from scratch timing send a measuring command to Survey control module in the moment in the time interval of each setting, Survey control module controls infrared thermometer and records the temperature value in each moment, and by record moment-temperature value data are stored in data memory module;
Peak value computing module read successively in chronological order in data memory module moment-temperature value data, and the temperature value in the first moment is defined as the temperature peak in the first moment, the calculating of the temperature peak in other moment the temperature value of current time and the temperature value in a upper moment to be compared and using the temperature peak of large for temperature value person as current time, and by moment-peak-data is stored into peak records module;
Computing module reads the temperature peak in each moment in peak records module in chronological order successively, and obtained the mean value of the temperature in the per unit time by the mode of the arithmetic average of the temperature peak in the some moment in the unit of account time, and the average data of Time-temperature is input in display module;
The average data of Time-temperature is shown on display by display module in chronological order successively, display display be one be transverse axis with time, take temperature as the rectangular coordinate system of the longitudinal axis, demonstrate the time dependent real time temperature measurement curve of temperature.
Further improvement of the present invention is: the time interval set in described timing module is 50ms; In described computing module, the unit interval of the mean value of accounting temperature is 1s.
Further improvement of the present invention is: the outlet of pressurized air afflux and the roller surface 80mm ~ 100mm apart of the purging protective device of described infrared thermometer.
Owing to have employed technique scheme, the technical progress that the present invention obtains is as follows:
Structure of the present invention is simple, reasonable in design, carries out peak value keep computing by the peak value computing module of host computer to the data recorded, can by temperature-measuring results by the rejecting abnormal data that accidentalia affects, thus make the data recorded closer to actual conditions.The present invention is averaged to the temperature peak in the unit interval by the computing module in host computer, can get rid of accidental error further, makes the temperature value of display closer to actual value.The present invention, by arranging purging protective device in infrared thermometer front end, significantly reduces the interference of the factor such as steam, oxide skin, improves measuring accuracy.Be provided with the outlet of pressurized air afflux at pressurized air mozzle near one end of workpiece, compressed-air actuated jet velocity can be improved, effectively blow away the oxide skin that surface of the work comes off, improve the accuracy of thermometric further.
The present invention, by arranging printing opacity catch between infrared thermometer and purging protective device, can prevent from dropping into the optical system that the dust, steam etc. that purge protective device pollute infrared thermometer, ensure that the even running of temp measuring system.In the present invention, pressurized air access tube and pressurized air mozzle are 60 ° ~ 80 ° angles, and the mouth of pipe of pressurized air access tube is exported towards pressurized air afflux, the turbulent flow of pressurized air access tube and pressurized air mozzle joint can be reduced, be convenient to, by outside the dust that drops in pressurized air mozzle again discharge pipe, ensure the clean of system.
Accompanying drawing explanation
Fig. 1: structural representation of the present invention;
Fig. 2: the annexation figure of modules and infrared thermometer in host computer;
Fig. 3: the process flow diagram of temp measuring method in the present invention;
Wherein: 1. infrared thermometer, 2. web member, 3. pressurized air mozzle, 31. pressurized air afflux outlets, 32. pressurized air access tubes, 4. printing opacity catch, 41. packing washers, 5. host computer.
Embodiment
The infrared real-time temperature measurement system of a kind of large-scale roller spraying thermal treatment, as shown in Figure 1, comprises infrared thermometer 1, purges protective device and host computer 5.
Host computer 5 is connected by Shielded Twisted Pair with infrared thermometer 1, and host computer comprises as lower module: timing module, Survey control module, data memory module, peak value computing module, peak records module, computing module, display module.Timing module, for recording the cool time, is set with the time interval of thermometric in timing module, and the time interval of general thermometric can be set as 50ms; Survey control module is connected with timing module with the input end of infrared thermometer, and sends instruction by the time interval set in timing module to temperature measurer, carries out thermometric; Data memory module is connected with the output terminal of infrared thermometer, and for record measured by infrared thermometer moment-temperature value; Peak value computing module is for the temperature value size that compares infrared thermometer and record and draw the temperature peak in a certain moment; Peak records module for record that peak value computing module draws moment-peak-data; Computing module gets arithmetic average after being added by the multiple temperature peaks in the peak records module in the unit interval again, calculates the mean value of the temperature in arbitrary unit interval, and by display module that the result of calculation of computing module exports.In computing module, the unit interval of the mean value of setup algorithm temperature is generally 1s.The annexation of above-mentioned modules and infrared thermometer as shown in Figure 2.
Purge protective device and comprise web member 2, web member 2 is short multidiameters with central through hole.The central through hole of one end that web member 2 diameter is larger is provided with internal thread, the excircle of the logical light mouth of infrared thermometer front end is provided with corresponding external thread, web member 2 is closely cooperated by screw thread and is installed to the front end of infrared thermometer, and ensures that the central through hole of web member and the logical light mouth of infrared thermometer are coaxially arranged.Also being provided with between web member 2 and the logical light mouth of infrared thermometer can through ultrared printing opacity catch 4, printing opacity catch is circular quartz glass plate, the both sides of printing opacity catch are also provided with packing washer 41, and packing washer is 41 is annular gaskets that rubber is made.Packing washer fits tightly with sealing catch, effectively can cut off and drop into water smoke in web member and steam, ensures the sealing of infrared thermometer internal optics.One end that web member 2 diameter is less is provided with external thread, and one end of pressurized air mozzle 3 is provided with corresponding internal thread, and pressurized air mozzle 3 is threaded connection and is installed to the less one end of web member 2 diameter.The end of the other end of pressurized air mozzle 3 is provided with annular catch, and the central through hole of annular catch is pressurized air afflux outlet 31.The outlet of pressurized air afflux is used for accelerating compressed-air actuated jet velocity.The cylindrical of annular catch and the inwall of pressurized air mozzle form compact siro spinning technology by screw thread, and the aperture of pressurized air afflux outlet is greater than the diameter of the infrared beam that infrared thermometer is launched.The middle part of pressurized air mozzle is provided with pressurized air access tube 32, in 60 ° ~ 80 ° angles between pressurized air access tube and pressurized air mozzle, and the mouth of pipe of pressurized air access tube is exported towards pressurized air afflux.
The temp measuring method of this temp measuring system comprises the steps:
A) temp measuring system is started, by the surface of the central aperture roll to be measured that pressurized air afflux exports, and with roller surface at a distance of 80mm ~ 100mm; In the timing module of host computer, the setting measurement time interval is 50ms in advance;
B) quenching starts, and timing module is started from scratch timing, and in pressurized air access tube, passes into pressurized air, to blow away steam and the oxide skin of roller surface in time;
C) after quenching starts, timing module in host computer sends a measuring command every 50ms to Survey control module, Survey control module often receives a measuring command, just records a temperature value by infrared thermometer, and the Time-temperature data recorded are stored into data memory module;
D) peak value computing module reads the temperature data in data memory module in chronological order successively, and the temperature value recorded when quenching is started rear 50ms is as T
1, the temperature value recorded during 100ms is T
2, the temperature that 150ms records is as T
3, the like, in the 1st second, measure 20 temperature values altogether; By T
1as temperature peak F during 50ms
1, then compare T
2with T
1size, if T
2> T
1, then by T
2as peak F during 100ms
2if, T
2≤ T
1, then by T
1as peak F during 100ms
2; Then T is compared in the same way
3with T
2size, obtain peak F during 150ms
3; The like, by t
nthe temperature value T that moment is corresponding
nwith the temperature value T of front one-shot measurement
n-1compare, if T
n> T
n-1, then by T
nas t
nthe peak value in moment, if T
n≤ T
n-1, then by T
n-1as t
nthe peak value in moment; And each moment and corresponding peak value are stored in peak records module;
E) computing module reads the peak value in each moment in peak records module in chronological order successively, and all peak values in each second are got arithmetic average; Be spaced apart 50ms owing to measuring in the present embodiment, have 20 measured values so per second, by 20 peak values relatively can be obtained, the mean value X of all peak values therefore in the 1st second
1for (F
1+ F
2+ F
3+ F
20)/20, the mean value X of all peak values in the 2nd second
2for (F
21+ F
22+ F
23+ F
40)/20, the like obtain At All Other Times each second in the mean value of all peak values;
F) display module is in chronological order, is shown on display successively in seconds by the average data of Time-temperature, display display be one be transverse axis with time, take temperature as the rectangular coordinate system of the longitudinal axis, the temperature value of display in the 1st second is X
1, the temperature value of display in the 2nd second is X
2, the like, demonstrate the time dependent real time temperature measurement curve of temperature, continue thermometric and show, until quenching terminates.
In the present invention for the computing module of temperature peak mean value in the unit of account time can also by Shielded Twisted Pair by this average back in fog quenching control system, for providing foundation for the adjustment of quenching process Wind pressure, hydraulic pressure.
Claims (8)
1. for heat treated infrared real-time temperature measurement system of spraying, comprise infrared thermometer (1), the host computer (5) purging protective device and be connected by Shielded Twisted Pair with infrared thermometer (1), it is characterized in that: host computer comprises the timing module in writing time and setting moment in the thermometric time interval, the Survey control module of the control infrared thermometer (1) be connected with timing module, for store measured by infrared thermometer (1) moment-data memory module of temperature value, for comparing temperature value size that infrared thermometer (1) measures and drawing the peak value computing module of the temperature peak in a certain moment, for record moment-the peak records module of peak-data, according in peak records module moment-the peak-data unit of account time in the computing module of temperature peak mean value and display module that the result of calculation of computing module is exported,
Described purging protective device is arranged on the logical light mouth of infrared thermometer (1) front end; purge protective device and comprise a pressurized air mozzle (3); pressurized air mozzle (3) is provided with and the pressurized air access tube (32) that is communicated with of pressurized air mozzle (3) inside, the front end of pressurized air mozzle (3) is provided with the pressurized air afflux that the aperture corresponding with the infrared beam that infrared thermometer (1) is launched be greater than the infrared beam diameter that infrared thermometer is launched and exports (31).
2. according to claim 1 for heat treated infrared real-time temperature measurement system of spraying, it is characterized in that: described peak value computing module is the temperature value data read successively in chronological order in data memory module, and the temperature value in the first moment is defined as the temperature peak in the first moment, the calculating of the temperature peak in other moment the temperature value of current time and the temperature value in a upper moment to be compared and using the temperature peak of large for temperature value person as current time, and by moment-peak value is stored into peak records module.
3. according to claim 1 for heat treated infrared real-time temperature measurement system of spraying, it is characterized in that: described computing module is the temperature peak in each moment of reading successively in chronological order in peak records module, and obtained the mean value of the temperature in the per unit time by the mode of the arithmetic average of the temperature peak in the some moment in the unit of account time, and the average data of Time-temperature is input in display module.
4. according to claim 1 for heat treated infrared real-time temperature measurement system of spraying; it is characterized in that: the pressurized air mozzle (3) of described purging protective device is connected to the outside of the logical light mouth of infrared thermometer (1) front end by the web member (2) that has central through hole; the central through hole of web member (2) and the logical light mouth of infrared thermometer are coaxially arranged, and are also provided with the printing opacity catch (4) of the logical light mouth of infrared thermometer and pressurized air mozzle (3) bore seal being isolated between web member (2) and the logical light mouth of infrared thermometer.
5. according to claim 4 for heat treated infrared real-time temperature measurement system of spraying, it is characterized in that: described pressurized air access tube (32) and pressurized air mozzle (3) are arranged in 60 ° ~ 80 ° angles, make the mouth of pipe of pressurized air access tube (32) towards pressurized air afflux outlet (31) of pressurized air mozzle (3).
6. for heat treated infrared real time temperature measurement method of spraying, it is characterized in that: temp measuring system used comprises the infrared thermometer (1) being connected with purging protective device and the host computer (5) be connected by Shielded Twisted Pair with infrared thermometer (1), and host computer comprises timing module, Survey control module, data memory module, peak value computing module, peak records module, the computing module calculating peak average value and the display module result of calculation of computing module exported; Described temp measuring method is as follows:
The surface of roll to be measured will be aimed at the infrared thermometer purging protective device, start temp measuring system, timing module is started from scratch timing send a measuring command to Survey control module in the moment in the time interval of each setting, Survey control module controls infrared thermometer and records the temperature value in each moment, and by record moment-temperature value data are stored in data memory module;
Peak value computing module read successively in chronological order in data memory module moment-temperature value data, and the temperature value in the first moment is defined as the temperature peak in the first moment, the calculating of the temperature peak in other moment the temperature value of current time and the temperature value in a upper moment to be compared and using the temperature peak of large for temperature value person as current time, and by moment-peak-data is stored into peak records module;
Computing module reads the temperature peak in each moment in peak records module in chronological order successively, and obtained the mean value of the temperature in the per unit time by the mode of the arithmetic average of the temperature peak in the some moment in the unit of account time, and the average data of Time-temperature is input in display module;
The average data of Time-temperature is shown on display by display module in chronological order successively, display display be one be transverse axis with time, take temperature as the rectangular coordinate system of the longitudinal axis, demonstrate the time dependent real time temperature measurement curve of temperature.
7. according to claim 6 for heat treated infrared real time temperature measurement method of spraying, it is characterized in that: the time interval set in described timing module is 50ms; In described computing module, the unit interval of the mean value of accounting temperature is 1s.
8. according to claim 6 for heat treated infrared real time temperature measurement method of spraying, it is characterized in that: pressurized air afflux outlet (31) and the roller surface 80mm ~ 100mm apart of the purging protective device of described infrared thermometer (1).
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| CN109272528A (en) * | 2018-09-18 | 2019-01-25 | 图普科技（广州）有限公司 | A kind of pedestrian track acquisition methods and device |
| CN109269646A (en) * | 2018-09-26 | 2019-01-25 | 湖南镭目科技有限公司 | A kind of continuous temperature measuring device for molten and system |
| CN109556732A (en) * | 2019-01-14 | 2019-04-02 | 中国水利水电科学研究院 | A kind of self-service measuring system of concrete mixer mouth temperature and method |
| CN112126753B (en) * | 2020-09-08 | 2021-09-03 | 东北大学 | Metal plate strip temperature measuring device and temperature control method for roller quenching machine |
| CN117705291A (en) * | 2023-10-25 | 2024-03-15 | 浙江领崎科技有限责任公司 | Infrared temperature measuring device, temperature measuring method and electronic equipment |
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| CN202763290U (en) * | 2012-05-24 | 2013-03-06 | 沈阳新松机器人自动化股份有限公司 | On-line heat-preserving device for roll cladding |
| CN103243211A (en) * | 2012-02-08 | 2013-08-14 | 宝山钢铁股份有限公司 | Roller quenching method by electric heating and device |
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| JPS59193706A (en) * | 1983-04-20 | 1984-11-02 | Sumitomo Metal Ind Ltd | Cooling method of rolling roll |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103243211A (en) * | 2012-02-08 | 2013-08-14 | 宝山钢铁股份有限公司 | Roller quenching method by electric heating and device |
| CN202763290U (en) * | 2012-05-24 | 2013-03-06 | 沈阳新松机器人自动化股份有限公司 | On-line heat-preserving device for roll cladding |
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