CN1036451A - Thickness measurer of furnace liner - Google Patents
Thickness measurer of furnace liner Download PDFInfo
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- CN1036451A CN1036451A CN 88100156 CN88100156A CN1036451A CN 1036451 A CN1036451 A CN 1036451A CN 88100156 CN88100156 CN 88100156 CN 88100156 A CN88100156 A CN 88100156A CN 1036451 A CN1036451 A CN 1036451A
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- furnace lining
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- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
Abstract
The present invention is a kind of novel steel-making furnace lining measuring thickness device.Strength retrogression's rule was measured after it utilized gamma-rays to be absorbed by furnace lining.In order to make detector constant temperature, the measuring process detector places in the circulating water sandwich.The source apparatus of particular design can make any position of the inswept furnace lining of the beam,gamma-ray of collimation.For remote metering, design novel tracking crawl device, it can be followed the tracks of beam,gamma-ray and transmitted intensity is counted.This crawl device also can be used for other and adheres in the application of wall crawling device.Staff's straighforward operation.That this instrument has is cheap, easy operating, keep in repair and be better than the advantages such as precision of world level.
See synoptic diagram (1).
Description
The invention belongs to the kiln lining thickness measuring device.
Current, because the introducing of steel-making technology can bring beyond thought damage to refractory material furnace lining.Therefore supervise the Nursing furnace lining effectively, can correctly in time determine reparation or blowing out heavily to build fire resistive material, this is very important to improving the stove order.And lining thickness measure when just can correctly grasp, interrelated data that furnace lining is repaired in spray repair where, also be the key that increases substantially stove order and raising steel capacity.
The AGAIMS-1100 system of Sweden former Mi Fusi (MEFOS) company development and the IMS-1600 system that produces are in the recent period adopted by each steelworks of the world.This instrument adopts emission of lasering beam to compare projection light then through the furnace lining diffuse reflection and measures with the residual thickness of the relative furnace lining in position that diffuses.
Because Sweden's instrument has adopted helium-neon laser, think and obtain enough big diffuse signal, the staff will seek a marriage alliance and face the scene, and the position projecting laser bundle that must find range estimation can reach is handled by the computing machine on the instrument through the light beam that the furnace lining diffuse reflection is returned.But because desire is surveyed the position that difference (as the position, neck place of the converter) tester at furnace lining position will be positioned at close fire door.This sampling instrument will meet with strong heat radiation baking together with operating personnel, and the tester swelters, drips with sweat, instrument since surpass 50 ℃ and malfunctioning be recurrent.(inventor once was in the action and witnessed this sight generation).
In order to overcome the drawback of the above instrument.Main points of the present invention do not adopt the lasing light emitter on Sweden's instrument, have therefore removed the software systems of a whole set of complicated optical instrument and computing machine complexity from yet.Thicknessmeter of the present invention is to have made full use of the superiority that gamma-rays runs through material, and when beam,gamma-ray passes through the different-thickness material, its intensity strictly observes exponential damping law I=I
0e
-μ xTherefore, by putting gamma ray detector, just can accurately record the furnace lining residual thickness of different parts the opposing party of furnace lining.For making surveying instrument follow the tracks of beam,gamma-ray, we have also designed novel tracking crawl device, and it carries detector, utilizes the electromagnet principle automatically to be adsorbed on the outside surface of furnace wall.The beam,gamma-ray that the technician of pulpit can make to remote control crawl device follow the tracks of and see through furnace lining moves.The transmitted intensity that detects can be printed as data for people's reference.See figure (1), (2).
For making the beam,gamma-ray collimation and don't causing the dosage of environment overproof.The γ source is sealed in the pig, and jar is gone out with the unlikely escape of guaranteeing to melt of plumbous liquid by stainless steel case (or titanium alloy) parcel.Through reasonably design, the beam that can make the γ source is respectively along spherical coordinates rotation θ, φ angle.As θ during by zero degree rotation π angle, beam can be on furnace lining inswept one vertical bundle bar, and φ is when rotating 2 π angles by zero degree, this vertically restraints bar with inswept whole sphere.Any position in this expression converter all can be inswept by gamma ray beam.
Because the present invention does not use laser beam, therefore saved the precision optical instrument part, read-out system is also greatly simplified.Simultaneously, it has avoided existing drawback on Sweden's instrument, and the cost of instrument is cut down significantly, and for ease of maintenaince, in case break down, the common laborer can change the parts of typing at once, proceeds test.Whole measuring process technician can carry out in the pulpit, need not to be in the action to suffer the hyperthermia and superheating radiation, and the precision of being surveyed is not less than current international advanced level (± 5 millimeters).
Although should also be noted that Soviet Union's steelworks fifties, once adopted the radioactivity technology.But method that they adopted and design are diverse with our invention main points.They are that the radiomaterial with different characteristic is imbedded in the furnace lining of different depth in advance.Therefore when furnace lining may wear to the different degree of depth, molten steel just contained the radioactivity of different characteristic.By measuring the thickness data that radioactive characteristic just can obtain the furnace lining average abrasion, but it can't provide the residual thickness after the concentrated wear of furnace lining.And the method for this radioactive contamination molten steel, early by being eliminated in the world.
Can under hot environment, work reliably for making detector.The detector sealing is placed in the circulating water sandwich, unaffected to guarantee that detector is counted gamma-ray intensity under steady temperature.Counting rate directly is sent to the pulpit by lead, chooses data by operating personnel and draws.See figure (3)
This radioactive ray technology joins same crawling device, and is easy to operate, and preparation simply can be widely used in other field.
Description of drawings:
Fig. 1 is whole thickness measurer of furnace liner schematic representation of apparatus.Wherein: (1) furnace wall betal can.(2) refractory material furnace lining.(3) from the electromagnet of motion tracking crawl device.(4) press the power lead of electromagnet.(5) the detector Communication signal wire leads to the counter of pulpit.(6) be positioned at the gamma ray detector of crawl device bottom.(7) with intracardiac axle, can make the collimating aperture of radioactive source change the θ angle during rotation, change from zero degree to the π degree.(8) concentric outer shaft can make radioactive source along continuous straight runs rotation φ angle during rotation, can be from zero degree to 2 π degree.(9) radioactive source spherical device.
Fig. 2 is the device in source.(1) collimating aperture radially points to radioactive source (cobalt-60 or other radioactive sources).(2) radioactive point source is sealed by titanium alloy.(3) and (5) be left and right sides semi-round ball lead absorber with stainless steel casing.(4) be the middle right cylinders of two semi-round balls.It is linked to each other with concentric shafts (6) by screw thread, and when (6) axle rotated, collimating aperture promptly vertically rotated.(7) be concentric outer shaft it link to each other with the two cerebral hemispheres, when (7) axle rotated, spheroid was that along continuous straight runs rotates, (6) are suspended on the roof beam structure of top symmetrically with (7).
Fig. 3 (A) is from the motion tracking crawl device.1. the electromagnet of crawl device can make crawl device be adsorbed on the furnace wall after the energising.2. has heat-resisting wheel.3. the gamma ray detector that has circulating water sandwich.4. the Communication signal wire of detector connects the counter of pulpit.9. beam,gamma-ray.
6. Fig. 3 (B) the 5. interlayer of gamma detector water cycle surveys gamma-ray material such as sodium iodide crystal and 7. and 8. is respectively and enters and exits waterpipe jointing.
Claims (3)
1, a kind of novel steel-making (iron) kiln lining thickness measuring device, strength retrogression's rule was measured after it utilized gamma-rays to be absorbed by furnace lining.The invention is characterized in that γ comes from furnace lining one side, the gamma ray detector that has cooling water sandwich is in the opposing party.Gamma detector is the performance that has after utilizing electromagnet to switch on the metallic walls of being adsorbed on.Motor above the control, detector can freely be creeped on wall with wheel.This crawling device (crawl device) can be widely used in being adsorbed in the motion on the metallic walls.
2, it is characterized in that the detector that has resistant to elevated temperatures wheel and the water cycle interlayer is housed in order to avoid detector temperature changes according to the described crawl device of claim 1.
3, according to the described γ of claim 1 source, it is characterized in that
1. do not have " point " source of absorption layer, place the shot center, this spheroid is made up of two hemispheres and nearly right cylinder and is suspended from the stove center.Rotate two concentric shafts on it, can make collimating aperture make spherical coordinates θ respectively, the φ angle changes, and determines θ, and the φ angle is promptly corresponding to a certain position of source irradiation furnace lining.
For making the at high temperature unlikely effusion of lead, so the Plumbum absorption material will seal with stainless steel case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100156 CN1036451A (en) | 1988-01-19 | 1988-01-19 | Thickness measurer of furnace liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100156 CN1036451A (en) | 1988-01-19 | 1988-01-19 | Thickness measurer of furnace liner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1036451A true CN1036451A (en) | 1989-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88100156 Pending CN1036451A (en) | 1988-01-19 | 1988-01-19 | Thickness measurer of furnace liner |
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| Country | Link |
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| CN (1) | CN1036451A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910786B (en) * | 2008-01-08 | 2012-10-24 | 新日本制铁株式会社 | Refractory thickness measuring method, and apparatus therefor |
| CN103322794A (en) * | 2013-06-26 | 2013-09-25 | 中冶长天国际工程有限责任公司 | Method and device for detecting changes of rotary kiln lining |
| CN103743766A (en) * | 2013-12-15 | 2014-04-23 | 柳州欧维姆机械股份有限公司 | Gamma ray nondestructive inspection cable rope concealed section detection device and method for realizing detection of device |
| CN104180780A (en) * | 2014-09-05 | 2014-12-03 | 哈尔滨工业大学 | High-temperature liquid container wall thickness monitoring system and method based on infrared thermal images |
| US9885566B2 (en) | 2014-07-24 | 2018-02-06 | Johnson Matthey Public Limited Company | Apparatus for determining thickness of lining layer |
-
1988
- 1988-01-19 CN CN 88100156 patent/CN1036451A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101910786B (en) * | 2008-01-08 | 2012-10-24 | 新日本制铁株式会社 | Refractory thickness measuring method, and apparatus therefor |
| CN103322794A (en) * | 2013-06-26 | 2013-09-25 | 中冶长天国际工程有限责任公司 | Method and device for detecting changes of rotary kiln lining |
| CN103743766A (en) * | 2013-12-15 | 2014-04-23 | 柳州欧维姆机械股份有限公司 | Gamma ray nondestructive inspection cable rope concealed section detection device and method for realizing detection of device |
| CN103743766B (en) * | 2013-12-15 | 2015-12-30 | 柳州欧维姆机械股份有限公司 | The method that gamma ray nondestructive inspection cable rope hidden section of pick-up unit and realization thereof detect |
| US9885566B2 (en) | 2014-07-24 | 2018-02-06 | Johnson Matthey Public Limited Company | Apparatus for determining thickness of lining layer |
| CN104180780A (en) * | 2014-09-05 | 2014-12-03 | 哈尔滨工业大学 | High-temperature liquid container wall thickness monitoring system and method based on infrared thermal images |
| CN104180780B (en) * | 2014-09-05 | 2017-01-25 | 哈尔滨工业大学 | High-temperature liquid container wall thickness monitoring system and method based on infrared thermal images |
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