CN104722735A - Detecting device of nozzle operating condition in continuous casting secondary cooling area with laser - Google Patents
Detecting device of nozzle operating condition in continuous casting secondary cooling area with laser Download PDFInfo
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- CN104722735A CN104722735A CN201510164496.0A CN201510164496A CN104722735A CN 104722735 A CN104722735 A CN 104722735A CN 201510164496 A CN201510164496 A CN 201510164496A CN 104722735 A CN104722735 A CN 104722735A
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- laser
- continuous casting
- secondary cooling
- nozzle
- cooling area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
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Abstract
The invention discloses a detecting device of the nozzle operating condition in a continuous casting secondary cooling area with lasers, and belongs to the technical field of laser detection. The detecting device comprises a laser distance measuring sensor, a laser reflecting screen, a spray nozzle, moving supports, a layer board, a roller way, cables, a computer and a displayer, the laser distance measuring sensor comprises a laser launching point and a laser receiving point; the laser reflecting screen is arranged vertically and is perpendicular to lasing; both the laser distance measuring sensor and the laser reflecting screen are connected to the layer board through a rod, and the two moving supports are horizontally welded under the layer board and are used for the movement of the whole device in the roller way; the cables are connected with the laser distance measuring sensor and the computer, and the computer is connected with the displayer. The detecting device of the nozzle operating condition in the continuous casting secondary cooling area with lasers has the advantages that the structure is simple, manufacturing is easy, and the nozzle operating condition in a continuous casting secondary cooling area can be detected fast.
Description
Technical field
The present invention relates to technical field of laser detection, be specifically related to a kind of device utilizing laser detection secondary cooling area for continuous casting nozzle operation situation.
Background technology
In industrial production and daily life, the measurement of distance is visible everywhere, and along with the development of science and technology, its metering system is not only confined to use rule to measure, wherein laser ranging is as a kind of convenient, fast and metering system that certainty of measurement is higher, is widely used in all trades and professions by people.The operation principle of laser ranging utilizes the laser diode in laser range sensor to aim at the pulse of test target Emission Lasers, laser reflects backward all directions scattering through target, wherein some scattered light turns back to transducer receivers, then utilizes the method for average in statistics to realize the resolution ratio of 1mm.
Compared with general light, laser has the features such as brightness is high, good directionality, monochromaticjty are good, energy density is large, and its impact of propagating in uniform dielectric of the same race by medium is relatively little.The decay size of laser in same media is relevant with optical wavelength, finds [1] by research water to the impact of Laser Transmission characteristic, and the light of ultraviolet and infrared band is decayed very large in water, and at visible light wave range, blue green light decay is minimum.When utilizing ultraviolet or infrared laser to find range, if intermediate medium has water to make laser attenuation, the energy of Returning sensor receiver is reduced, and range measurements finally can be caused bigger than normal, and the water yield of laser penetration is more, and measurement result is larger.
In continuous casting production process, cooling twice adopts water smoke to cool steel billet, its objective is and accept continuous coo1ing until solidify completely after making strand leave crystallizer, the requirement of modern continuous casting to cooling twice is more and more stricter, strand should solidify complete at time Inner short as far as possible, to improve the production capacity of conticaster.In casting process, the quality of two cold-zone cooling effects and conticaster output and slab quality closely related, once there are spray nozzle clogging or half blocking in two cold-zones, just there will be slab wide irrational situation of water distribution, and then it is uneven to produce Local cooling, cause strand to produce the problems such as distortion, crack defect, the effect of dynamic soft reduction technology also can be affected.Effectively detecting two cold-zone nozzle operation situations is at present one of steel plant's problem demanding prompt solutions.
In order to whether the nozzle realizing detecting fast secondary cooling area for continuous casting occurs the situation of blocking, half blocking, the present invention, in conjunction with the operation principle of laser range sensor and the attenuation characteristic of laser in water, provides a kind of device utilizing laser range sensor to detect nozzle operation situation.
Summary of the invention
The present invention is directed to the method also not utilizing laser detection nozzle operation situation at present, in conjunction with the attenuation characteristic of laser in water, provide the device that a kind of structure is simple, be easy to manufacture, can detect fast nozzle operation situation.
A kind of device utilizing laser range sensor to detect nozzle operation situation provided by the present invention comprises laser range sensor, laser reflection screen, hydraulic spray nozzle, traversing carriage, supporting plate, roller-way, cable, computer, display, and laser range sensor comprises laser emission point and laser pick-off point; Described laser reflection screen is vertically placed, and perpendicular to Emission Lasers; Described laser range sensor is all connected with described supporting plate by bar with laser reflection screen, parallel welding two traversing carriages under described supporting plate, and described traversing carriage moves on roller-way for whole device; Described roller-way is work on the spot environment; Described cable connects laser range sensor and computer, and this computer is used for storing and analytical test result; Described display is connected with computer, for showing real-time testing result.
In order to increase the absorption of water smoke to laser, increase the conspicuousness of test result, described Emission Lasers is ultraviolet or infrared laser, wavelength 0 ~ 0.4nm or be greater than 0.6nm.
The principles of science of the present invention:
Use the pulse of laser range sensor Emission Lasers, there is scattering in the reflective viewing screen on the arrival opposite, water smoke district that laser produces through nozzle injection, some scattered light can be received by distance measuring sensor through water smoke district again, and then sensor calculates the distance value of radiation shield to sensor according to the method for average in statistics.Because water smoke has certain attenuation to laser, so the signal that the more intensive sensor of water smoke receives is more weak, test institute value is also larger.Determine the nozzle location that row's nozzle is intact before test, test it, measured value is as the comparison other of test result.Open electric machines for roller, testing arrangement is allowed at the uniform velocity to move on roller-way, Laser emission and reception is kept in device motion process, so just, secondary cooling area for continuous casting can be recorded and often arrange distance measure corresponding to nozzle, measured value carries out showing and storing on computers, by obtaining the com-parison and analysis of measurement result, the nozzle of the corresponding row existence blocking that result is less than normal or half blocking, this row water smoke density is caused to reduce, the decay of laser is weakened, the corresponding row of the less explanation of result occurs that the problem blocked is more serious, and then can investigate the nozzle of place row, change.
Compared with prior art, the present invention has following technique effect:
(1) by the uniform velocity moving laser range sensor and reflective viewing screen on roller-way, measure the distance value of each row nozzle position, comparative analysis test result, the row at the nozzle place that blocking or half blocking occur can be obtained fast, and then the nozzle of corresponding row is investigated, changed;
(2) this plant automation degree is higher, and can realize Long-distance Control, can save a large amount of manpower and materials.
Accompanying drawing explanation
Fig. 1 is laser range sensor fundamental diagram.
Fig. 2 is a kind of apparatus structure schematic diagram utilizing laser detection secondary cooling area for continuous casting nozzle operating mode of the present invention.
Fig. 3 is that laser ranging result increases change curve with water level.
In figure: 1, laser range sensor; 2, laser emission point; 3, laser pick-off point; 4, laser reflection screen; 5, hydraulic spray nozzle; 6, traversing carriage; 7, supporting plate; 8, roller-way; 9, cable; 10, computer; 11, display.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments in detail the present invention is described in detail.
A kind of device utilizing laser range sensor to detect nozzle operation situation provided by the present invention comprises laser range sensor 1, laser emission point 2, laser pick-off point 3, laser reflection screen 4, hydraulic spray nozzle 5, traversing carriage 6, supporting plate 7, roller-way 8, cable 9, computer 10, display 11.Laser range sensor 1 is for transmitting and receiving laser signal, and in order to increase the absorption of water smoke to laser, increase the conspicuousness of test result, the laser that the present invention uses is ultraviolet or infrared laser, wavelength 0 ~ 0.4nm or be greater than 0.6nm; In addition on laser range sensor with level meter, launched by regulating guarantee laser level; Laser emission point 2 and laser pick-off point 3 be laser range sensor from belting, function is the launching and receiving jointly realizing laser; Laser reflection screen 4 is common plane, long 50 ~ 200mm, wide 50 ~ 200mm, and realize the natural scattering to irradiating laser, screen is vertically placed, and keeps vertical with laser; Hydraulic spray nozzle 5 is the supporting nozzle in secondary cooling area for continuous casting, and function is the atomization realizing water; Supporting plate 7 adopts U-shaped aluminium alloy, height 10 ~ 30mm, long 1500 ~ 3000mm, wide 100 ~ 300mm, be used for fixed laser distance measuring sensor and laser reflection screen on the one hand, the geo-stationary between sensor and radiation shield can be ensured on the other hand, and then reduce the error of test result; Traversing carriage 6 is 2 single u-shaped aluminum alloy materials, long 1000 ~ 2500mm, wide 100 ~ 200mm, high 30 ~ 80mm, two parallel placements of support, weld together with supporting plate, its spacing is 500 ~ 2000mm, upwards welded with supporting plate by the leg of U-shaped aluminium alloy during welding, plane contacts with roller-way downwards, and energy alleviator is to the scuffing of roller-way like this; Computer 10 and display 11 are standard computer configuration, and the supporting software of laser range sensor is equipped with in its inside, can realize the control to Laser emission and the reception process to reflected signal; Cable 9 is the supporting wire of distance measuring sensor, for connecting distance measuring sensor and computer.
The present invention have studied the impact of the water yield on laser ranging by adopting laser range finder and beaker, and concrete steps are as follows:
First laser range finder is lifted to certain altitude, aim at empty beaker bottom Emission Lasers (wavelength 635nm), record a distance value; Then control rangefinder and beaker invariant position, add water in beaker, water level often increases certain altitude and just measures a distance value; Test terminates, and measurement result is as shown in the table:
According to the above results curve plotting figure, as shown in Figure 3.
From above result, along with the degree of depth of water increases, water increases the attenuation of laser, and the laser signal that rangefinder receives weakens, and the distance value that laser range finder is recorded increases.Thus, laser range finder can be applied to secondary cooling area for continuous casting, for detecting the working condition of nozzle, test result is larger, illustrate that the water smoke district that nozzle produces is more intensive, otherwise then portion nozzle may block, cause water smoke district more sparse.
The present invention utilizes the course of work of the device of laser range sensor detection nozzle operation situation as follows:
Supporting plate 7 and traversing carriage 6 are placed on roller-way 8, jockey, laser range sensor 1, reflective viewing screen 4 etc. are installed, connect the cable 9 of computer 10 and sensor, debug before test, guarantee laser level is launched, and vertical irradiation is on reflective viewing screen 4, tests after having debugged.The test first step, determines the nozzle location that row's nozzle is all intact, tests distance value during this position nozzle operation, as fiducial value, test second step, open all nozzles 5, open electric machines for roller, allow device uniform motion on roller-way 8, laser uniform emission and reception is kept in device motion process, Received signal strength imports computer 10 into by cable 9 to carry out storing and processes, motion along with device records secondary cooling area for continuous casting and often arranges distance measure corresponding to nozzle, com-parison and analysis is carried out to measurement result, find out the row that test result is less, then carry out investigating the position specifically can determining the nozzle occurring blocking to the nozzle of corresponding row, carry out changing to nozzle subsequently and can solve the uneven problem of Local cooling.
Claims (2)
1. one kind utilizes the device of laser detection secondary cooling area for continuous casting nozzle operation situation, it is characterized in that, this device comprises laser range sensor (1), laser reflection screen (4), hydraulic spray nozzle (5), traversing carriage (6), supporting plate (7), roller-way (8), cable (9), computer (10) and display (11), and laser range sensor (1) comprises laser emission point (2) and laser pick-off point (3); Described laser reflection screen (4) is vertically placed, and perpendicular to Emission Lasers; Described laser range sensor (1) is all connected with described supporting plate (7) by bar with laser reflection screen (4), parallel welding two traversing carriages (6) under described supporting plate (7), described traversing carriage (6) is upper mobile at roller-way (8) for whole device; Described cable (9) connects laser range sensor (1) and computer (10), and described computer (10) is connected with display (11).
2. a kind of device utilizing laser detection secondary cooling area for continuous casting nozzle operation situation as claimed in claim 1, it is characterized in that, described Emission Lasers is ultraviolet or infrared laser, wavelength 0 ~ 0.4nm or be greater than 0.6nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164496.0A CN104722735A (en) | 2015-04-08 | 2015-04-08 | Detecting device of nozzle operating condition in continuous casting secondary cooling area with laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510164496.0A CN104722735A (en) | 2015-04-08 | 2015-04-08 | Detecting device of nozzle operating condition in continuous casting secondary cooling area with laser |
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| CN104722735A true CN104722735A (en) | 2015-06-24 |
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| CN201510164496.0A Pending CN104722735A (en) | 2015-04-08 | 2015-04-08 | Detecting device of nozzle operating condition in continuous casting secondary cooling area with laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3456436A1 (en) * | 2017-09-19 | 2019-03-20 | SMS Group GmbH | Inspection system and process for the monitoring of the functionnality of a spray nozzle in particular in a continuous casting machine |
| CN110315045A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | The judgment method of continuous casting two cold system mode |
| CN112958751A (en) * | 2021-01-27 | 2021-06-15 | 唐山不锈钢有限责任公司 | Online prediction and management method for continuous casting secondary cooling state |
Citations (6)
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|---|---|---|---|---|
| JPH0399759A (en) * | 1989-09-13 | 1991-04-24 | Kawasaki Steel Corp | Method for detecting and correcting displacement of nozzle position in single roll method |
| JPH0691317A (en) * | 1992-09-11 | 1994-04-05 | Kawasaki Steel Corp | Nozzle clogging inspecting device for water cooling equipment for metal sheet |
| JP2000263193A (en) * | 1999-03-15 | 2000-09-26 | Nippon Steel Corp | Gap meter for single roll method casting and production of rapidly cooled and solidified strip |
| KR20090039165A (en) * | 2007-10-17 | 2009-04-22 | (주)윈티앤에스 | Segment roll checker of non-contact type |
| CN202199469U (en) * | 2011-08-16 | 2012-04-25 | 福建福贞金属包装有限公司 | Internal spraying device for empty cans |
| CN204504169U (en) * | 2015-04-08 | 2015-07-29 | 安徽工业大学 | A kind of device utilizing laser detection secondary cooling area for continuous casting nozzle operation situation |
-
2015
- 2015-04-08 CN CN201510164496.0A patent/CN104722735A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0399759A (en) * | 1989-09-13 | 1991-04-24 | Kawasaki Steel Corp | Method for detecting and correcting displacement of nozzle position in single roll method |
| JPH0691317A (en) * | 1992-09-11 | 1994-04-05 | Kawasaki Steel Corp | Nozzle clogging inspecting device for water cooling equipment for metal sheet |
| JP2000263193A (en) * | 1999-03-15 | 2000-09-26 | Nippon Steel Corp | Gap meter for single roll method casting and production of rapidly cooled and solidified strip |
| KR20090039165A (en) * | 2007-10-17 | 2009-04-22 | (주)윈티앤에스 | Segment roll checker of non-contact type |
| CN202199469U (en) * | 2011-08-16 | 2012-04-25 | 福建福贞金属包装有限公司 | Internal spraying device for empty cans |
| CN204504169U (en) * | 2015-04-08 | 2015-07-29 | 安徽工业大学 | A kind of device utilizing laser detection secondary cooling area for continuous casting nozzle operation situation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3456436A1 (en) * | 2017-09-19 | 2019-03-20 | SMS Group GmbH | Inspection system and process for the monitoring of the functionnality of a spray nozzle in particular in a continuous casting machine |
| CN110315045A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | The judgment method of continuous casting two cold system mode |
| CN110315045B (en) * | 2018-03-30 | 2021-04-13 | 宝山钢铁股份有限公司 | Method for judging state of continuous casting secondary cooling system |
| CN112958751A (en) * | 2021-01-27 | 2021-06-15 | 唐山不锈钢有限责任公司 | Online prediction and management method for continuous casting secondary cooling state |
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Application publication date: 20150624 |