CN114088213A - Non-contact temperature measuring device and method for surface of continuous casting blank - Google Patents
Non-contact temperature measuring device and method for surface of continuous casting blank Download PDFInfo
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- CN114088213A CN114088213A CN202111555743.1A CN202111555743A CN114088213A CN 114088213 A CN114088213 A CN 114088213A CN 202111555743 A CN202111555743 A CN 202111555743A CN 114088213 A CN114088213 A CN 114088213A
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 24
- 238000005266 casting Methods 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000010926 purge Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052594 sapphire Inorganic materials 0.000 claims description 4
- 239000010980 sapphire Substances 0.000 claims description 4
- 239000005355 lead glass Substances 0.000 claims description 3
- 238000009628 steelmaking Methods 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 244000144985 peep Species 0.000 description 3
- 208000008918 voyeurism Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 238000004861 thermometry Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Continuous Casting (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention discloses a non-contact temperature measuring device and a temperature measuring method for the surface of a continuous casting blank, and the device comprises a non-contact temperature measuring device body, wherein the non-contact temperature measuring device body comprises an infrared sensor, a protective structure, an adjusting mechanism, a sighting mechanism and a wireless signal processing module, and the protective structure comprises a purging structure, a water-cooling protective sleeve, a front dustproof sheet and a dustproof rear cover; and one end of the water-cooling protective sleeve is hermetically connected with the purging structure, the other end of the water-cooling protective sleeve is fixedly connected with the dustproof rear cover and is provided with an adjusting mechanism, the signal output end of the infrared sensor is electrically connected with the wireless signal processing module and is arranged in the water-cooling protective sleeve together, and the infrared receiving end of the infrared sensor is provided with a front dustproof sheet. The invention is suitable for continuous temperature measurement of continuous casting blanks, particularly for occasions with two to four areas, relatively high ambient temperature and small installation and operation space, realizes non-contact real-time continuous wireless automatic temperature measurement of the surface temperature of the casting blank in the production process, greatly reduces the safety risk, and has accurate and efficient temperature measurement.
Description
Technical Field
The invention relates to the field of non-contact temperature measurement, in particular to a non-contact temperature measurement device and a temperature measurement method for the surface of a continuous casting blank.
Background
Continuous casting smelting is one of the steel casting methods commonly used at home and abroad at present, steel leakage caused by casting blank fracture in the continuous casting process is a major safety accident, and the casting blank fracture is caused by the fact that the metal shell of the secondary cooling area is too thin and the casting blank pulling speed is too high, so that the temperature and the advancing speed of the casting blank need to be effectively monitored and controlled.
The casting blank temperature usually adopts an indirect temperature measurement mode, a worker holds a temperature measurement gun to measure the temperature of the surface of the casting blank when a continuous casting machine works, the point-to-point temperature measurement mode is not only discontinuous, the temperature change of the casting blank cannot be observed at any time, and simultaneously, the great safety risk is accompanied, and in addition, the casting blank shell of a secondary cooling area is too thin, so the probability of steel leakage is generated, therefore, the operation of the mode of measuring the temperature by the aid of the hand-held temperature measurement gun is very dangerous, and the mode cannot be executed in the area.
Therefore, the key for ensuring the smooth production is to realize safe and continuous casting blank temperature measurement.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a non-contact temperature measuring device and a temperature measuring method for a continuous casting surface, which can automatically and continuously measure a surface temperature of a cast slab in a high temperature region.
In order to achieve the above object, the present invention provides a non-contact temperature measuring device for a surface of a continuous casting blank, which comprises a non-contact temperature measuring device body, wherein the non-contact temperature measuring device body comprises an infrared sensor, a protective structure, an adjusting mechanism, a sighting mechanism and a wireless signal processing module, and is characterized in that: the wireless signal processing module comprises a digital circuit, a battery and an upper computer; the aiming mechanism is a fixed support for mounting a laser pen; the adjusting mechanism is a metal bracket which performs limited rotary motion in a three-dimensional space; the protective structure comprises a blowing structure, a water-cooling protective sleeve, a front dustproof sheet and a dustproof rear cover; the infrared sensor is a high-temperature sensitive acquisition unit; wherein, water-cooling protective sheath one end with sweep structure sealing connection, the other end links firmly with dustproof after-hood, and the outer wall is equipped with adjustment mechanism, the water-cooling protective sheath and sweep the structure lateral wall and all be equipped with the circulating water and import and export, infrared sensor's signal output part and wireless signal processing module electricity signal connection arrange the water-cooling protective sheath in together, infrared sensor's infrared receiving terminal is equipped with leading dustproof piece, is equipped with the air inlet in dustproof after-hood outer end, and the air supply is through the air inlet, sweeps the structure through the inboard flow direction of water-cooling protective sheath and sweeps in the passageway from peeping at the mouth blowout.
In order to ensure that the infrared sensor is dustproof and the receiving effect of infrared light is not influenced, the front dustproof sheet is a sapphire single crystal glass sheet with the light transmittance of more than 90%.
In order to better play a role in protection, the front section of the purging structure is provided with a Laval supersonic nozzle capable of forming high-speed jet.
In order to be convenient to carry or move, the wireless signal processing module receives wireless transmission data through a battery power supply receiver and continues a journey through charging during maintenance.
The invention provides a temperature measuring method of a non-contact temperature measuring device on the surface of a continuous casting blank, which comprises the following steps of:
step 1: erecting a platform or a bracket on the periphery of the continuous casting machine to install a non-contact temperature measuring device body, wherein the distance between a lens of an infrared sensor and a casting blank is about 1 m;
step 2: the angle of the device is adjusted by adjusting the adjusting mechanism, so that the lens of the infrared sensor is opposite to the surface of the casting blank, and an imaging route and an imaging range are not shielded by other structures;
and step 3: respectively connecting the blowing structure and the water-cooling protective sleeve to an air source (N2 or compressed air) and a cooling water source, and requiring the air pressure and the water pressure to be about 0.6 Mpa;
and 4, step 4: starting a power switch of a body of the non-contact temperature measuring device, and starting temperature measuring software on an upper computer in a control room;
and 5: when the continuous casting machine works, the water and gas are kept in a state of being opened all the time, the temperature measurement software displays real-time temperature measurement records, and meanwhile, secondary fitting is carried out to judge the stability of the steelmaking process through variance. Since the thermometry software is a conventional technique programmed by those skilled in the art according to the thermometry requirements, it will not be described in detail here.
The non-contact temperature measuring device and the temperature measuring method for the surface of the continuous casting blank are suitable for continuous temperature measurement of the continuous casting blank, and particularly can exert the advantages of the device on occasions with two to four areas, relatively high ambient temperature and small installation and operation space; according to the invention, the infrared sensor and the wireless signal processing module are arranged in the protective structure, the infrared peep hole is reserved, the angle of the device is adjusted through the external adjusting mechanism and the aiming mechanism, the infrared peep hole is aligned to the surface of the casting blank to collect information, the non-contact real-time continuous wireless automatic temperature measurement of the surface temperature of the casting blank in the production process can be realized, the precision is higher, the safety and the reliability are greatly improved compared with those of the traditional mode, the safety risk is greatly reduced by adopting the infrared and wireless transmission technology, the temperature measurement is accurate and efficient, and the safety, the intellectualization and the high efficiency of continuous casting smelting are realized.
Drawings
FIG. 1 is a structural view of a non-contact temperature measuring device for a surface of a continuously cast slab according to the present invention;
FIG. 2 is a schematic diagram illustrating the effect of the present invention on measuring the temperature of the surface of a continuous casting blank;
FIG. 3 is a schematic diagram of the protection structure of the embodiment.
In the figure: the device comprises a continuous casting machine 1, a continuous casting roller 2, a non-contact temperature measuring device 3, an air source 4, a cooling water source 5, an upper computer 6, an infrared sensor 7, sapphire glass 8, a purging channel 9, an air inlet 10, a water inlet 11, a water outlet 12, a wireless signal processing module 13, an adjusting mechanism 14, a protective structure 16, a battery 17, a dustproof rear cover 18, a Laval supersonic nozzle 19, a sighting mechanism 20, a laser pen 21, an infrared peeping hole 22, a purging structure 23, a water-cooling protective sleeve 24, a front dustproof sheet 25, a digital circuit 26, an outer wall 27 and a purging structure front section 28.
Detailed Description
The technical solution of the present invention is further described below with reference to specific examples.
Example (b):
as shown in fig. 1, the non-contact temperature measuring device for the surface of a continuous casting blank described in this embodiment includes a non-contact temperature measuring device body 3, where the non-contact temperature measuring device body 3 includes an infrared sensor 7, a protective structure 16, an adjusting mechanism 14, a sighting mechanism 20, and a wireless signal processing module 13, and the wireless signal processing module 13 includes a digital circuit 26, a battery 17, and an upper computer 6; the aiming mechanism 20 is a fixed support for mounting a laser pen 21; the adjusting mechanism 14 is a metal bracket which performs limited rotary motion in a three-dimensional space; the protective structure 16 comprises a purging structure 23, a water-cooling protective sleeve 24, a front dustproof sheet 25 and a dustproof rear cover 18; the infrared sensor 7 is a high-temperature sensitive acquisition unit; wherein, 24 one end of water-cooling protective sheath with sweep 23 sealing connection of structure, the other end links firmly with dustproof after-hood 18, and outer wall 27 is equipped with adjustment mechanism 14, water-cooling protective sheath 24 and sweep 23 lateral walls of structure and all be equipped with circulating water inlet 11 and delivery port 12, infrared sensor 7's signal output part and 13 electrical signal connections of radio signal processing module arrange water-cooling protective sheath 24 in together, infrared sensor 7's infrared receiving terminal is equipped with leading dustproof piece 25, is equipped with air inlet 10 in dustproof after-hood 18 outer end, and air supply 4 is through air inlet 10, sweeps structure 23 through the inboard flow direction of water-cooling protective sheath 24 and sweeps in the passageway 9 from infrared peep hole 22 blowout after.
In order to ensure that the infrared sensor is dustproof and the receiving effect of infrared light is not influenced, the front dustproof sheet 25 is a sapphire single crystal glass sheet 8 with the light transmittance of more than 90%;
in order to better play a role of protection, the sweeping structure 23 is provided with a Laval supersonic nozzle 19 which can form high-speed jet flow at the front section 28 of the sweeping structure;
in order to be convenient to carry or move, the wireless signal processing module 13 is powered by the battery 17 to receive wireless transmission data, and the service life is prolonged by charging during maintenance.
The temperature measuring method of the non-contact temperature measuring device for the surface of the continuous casting blank provided by the embodiment is characterized by comprising the following steps of:
step 1: erecting a platform or a bracket on the periphery of the continuous casting machine 1 to install a non-contact temperature measuring device body 3, wherein the distance between the lens of the infrared sensor 7 and the casting blank is about 1 m;
step 2: the angle of the device is adjusted by adjusting the adjusting mechanism 14, so that the lens of the infrared sensor 7 is opposite to the surface of the casting blank, and an imaging route and an imaging range are not shielded by other structures;
and step 3: the blowing structure 23 and the water-cooling protective sleeve 24 are respectively connected with an air source 4 (which can be nitrogen or compressed air) and a cooling water source 5, and the air pressure and the water pressure are required to be about 0.6 Mpa;
and 4, step 4: starting a power switch of the non-contact temperature measuring device body 3, and starting temperature measuring software on the upper computer 6 in the control room;
and 5: when the continuous casting machine 1 works, the water and gas are kept in a starting state all the time, the software displays real-time temperature measurement records, and meanwhile, secondary fitting is carried out to judge the stability of the steelmaking process through variance. Since the thermometry software is a conventional technique programmed by those skilled in the art according to the thermometry requirements, it will not be described in detail here.
The temperature measuring method of the non-contact temperature measuring device for the surface of the continuous casting blank provided by the embodiment is used for measuring the temperature of the surface of the casting blank of the continuous casting machine 1, the cross section area of the casting blank is 40cm x 30cm, the casting blank is made of special steel, the temperature measuring area is three areas, the installation position of the temperature measuring device is 80cm away from the steel blank, and the temperature measuring device is connected with 0.6Mpa nitrogen and is communicated with 0.6Mpa cooling water. The temperature measurement process is uninterrupted temperature measurement, and specifically comprises the following steps:
1. determining whether an infrared peeping hole 22 of the device is aligned with a billet or not, simulating the relative position of the billet by the position of laser on the continuous casting machine 1 through a laser pen 21 additionally arranged at the head of a sighting mechanism 20, and enabling a light spot to be positioned between continuous casting rollers 2 of the continuous casting machine 1 by adjusting the angle of the device;
2. removing the aiming mechanism 20 of the laser pen 21, and connecting the air source 4 and the cooling water source 5;
3. turning on a switch of the equipment to be powered on, enabling the equipment to normally work, setting a temperature threshold value T, judging that the casting machine 1 does not work if the temperature does not reach the threshold value for 10s continuously, and sleeping the equipment to save the electric quantity;
4. when continuous casting smelting starts, when the detection temperature of equipment exceeds a threshold value, temperature measurement work is started, temperature measurement software is started at a terminal, temperature change can be observed, and when the temperature difference value between any time Tx and the next time Ty exceeds 50 ℃, a system alarms, and a steel leakage phenomenon possibly occurs.
5. Real-time temperature data obtained by temperature measurement software is correlated with parameters of the continuous casting machine 1, and the feeding speed of a casting blank is calculated and adjusted in real time by taking the real-time temperature data as an input condition, so that the aim of controlling the safe production of the continuous casting machine 1 is fulfilled.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111555743.1A CN114088213A (en) | 2021-12-17 | 2021-12-17 | Non-contact temperature measuring device and method for surface of continuous casting blank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111555743.1A CN114088213A (en) | 2021-12-17 | 2021-12-17 | Non-contact temperature measuring device and method for surface of continuous casting blank |
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| CN114088213A true CN114088213A (en) | 2022-02-25 |
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| CN202111555743.1A Pending CN114088213A (en) | 2021-12-17 | 2021-12-17 | Non-contact temperature measuring device and method for surface of continuous casting blank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700474A (en) * | 2022-03-04 | 2022-07-05 | 沈阳藤艺电子有限公司 | Method and device for determining positioning of steel blank in steel tilting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0562833U (en) * | 1992-01-28 | 1993-08-20 | 住友金属工業株式会社 | Device for measuring the temperature of an object in a high-temperature furnace |
| CN1869156A (en) * | 2006-05-23 | 2006-11-29 | 沈阳君城电子有限公司 | Coke oven temperature continuous measuring device and method |
| CN202485804U (en) * | 2012-03-30 | 2012-10-10 | 长春工业大学 | Infrared temperature measurement system based on radio frequency (RF) wireless transmission |
| WO2014034657A1 (en) * | 2012-08-28 | 2014-03-06 | 新日鐵住金株式会社 | Method and device for measuring surface temperature of strand |
| CN105698940A (en) * | 2016-03-16 | 2016-06-22 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A temperature measuring gun and temperature measuring system for high temperature liquid metal |
| CN209206397U (en) * | 2018-10-29 | 2019-08-06 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of Multi-point infrared radiation temperature measurement device measuring slab surface temperature |
| CN211013258U (en) * | 2019-12-26 | 2020-07-14 | 南京佛利蒙特测控技术有限公司 | Take infrared radiation thermometer strenghthened type protector of laser sight |
-
2021
- 2021-12-17 CN CN202111555743.1A patent/CN114088213A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0562833U (en) * | 1992-01-28 | 1993-08-20 | 住友金属工業株式会社 | Device for measuring the temperature of an object in a high-temperature furnace |
| CN1869156A (en) * | 2006-05-23 | 2006-11-29 | 沈阳君城电子有限公司 | Coke oven temperature continuous measuring device and method |
| CN202485804U (en) * | 2012-03-30 | 2012-10-10 | 长春工业大学 | Infrared temperature measurement system based on radio frequency (RF) wireless transmission |
| WO2014034657A1 (en) * | 2012-08-28 | 2014-03-06 | 新日鐵住金株式会社 | Method and device for measuring surface temperature of strand |
| CN105698940A (en) * | 2016-03-16 | 2016-06-22 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A temperature measuring gun and temperature measuring system for high temperature liquid metal |
| CN209206397U (en) * | 2018-10-29 | 2019-08-06 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of Multi-point infrared radiation temperature measurement device measuring slab surface temperature |
| CN211013258U (en) * | 2019-12-26 | 2020-07-14 | 南京佛利蒙特测控技术有限公司 | Take infrared radiation thermometer strenghthened type protector of laser sight |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700474A (en) * | 2022-03-04 | 2022-07-05 | 沈阳藤艺电子有限公司 | Method and device for determining positioning of steel blank in steel tilting machine |
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