CN2122698U - Floating continuous temperature measuring device for molten steel - Google Patents
Floating continuous temperature measuring device for molten steel Download PDFInfo
- Publication number
- CN2122698U CN2122698U CN 92210647 CN92210647U CN2122698U CN 2122698 U CN2122698 U CN 2122698U CN 92210647 CN92210647 CN 92210647 CN 92210647 U CN92210647 U CN 92210647U CN 2122698 U CN2122698 U CN 2122698U
- Authority
- CN
- China
- Prior art keywords
- protection tube
- temperature
- thermocouple
- cursory
- temperature measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000007667 floating Methods 0.000 title description 3
- 239000011195 cermet Substances 0.000 claims abstract description 15
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims abstract description 9
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 10
- 238000005266 casting Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000010431 corundum Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 239000011819 refractory material Substances 0.000 claims description 3
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000009749 continuous casting Methods 0.000 abstract description 3
- 238000007670 refining Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011651 chromium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a continuous temperature measuring device, comprising a transducer, compensating wires, and an instrument, wherein, the transducer is provided with a cermet protection tube and a double platinum-rhodium thermocouple arranged in the cermet protection tube, and a float whose specific gravity is between steel slag is arranged on the protection tube; in addition, an armored thermocouple which is used as a measure for the cold end compensation of the double platinum-rhodium thermocouple is arranged between the transducer and the instrument. The utility model is characterized in that the error of a temperature measurement system is less than or equal to 5 DEG, the response time is less than or equal to 30 seconds, the highest observed temperature is 1750 DEG, and the continuous service life of the transducer can reach more than 50 hours under the working temperature of 1500 to 1700 DEG. The utility model can be used for the field of the continuous temperature measurement of molten steel in continuous casting intermediate tanks and the refining of the temperature regulation outside of various furnaces.
Description
The utility model belongs to a kind of temperature measuring equipment of liquid metal, relates in particular to the device of METHOD FOR CONTINUOUS DETERMINATION liquid steel temperature.
Continuous measurement of molten steel temperature is one of steel-making difficult problem anxious to be solved at present.Along with developing in depth and breadth of continuous casting and the outer liquid steel temperature control technology of stove, realize that continuous measurement of molten steel temperature seems even more important.Can only carry out interrupted thermometric with quick micro thermocouple in the past, each thermometric time only was 2～3 seconds, thereby not only consumed height, and can not quote the variations in temperature data continuously.Therefore, for the special steel of quality requirement strictness etc., can not prevent the quality accident that Yin Wendu control is improper or temperature anomaly is brought fully.
In recent years, but company of Japanese Nippon Steel and Asahi Glass company develop the continuous temperature measurement meter that long-time continuous is measured liquid steel temperature in the conticaster tundish jointly, and its average life span made the liquid steel temperature control technology obtain very great development at 40 hours.This thermometric is counted immersion-type, is made of thermocouple and outer protection tube, and protection tube is made by zirconium boride.It is not enough, and point is lower for sensitivity of thermometry, under 1000～1550 ℃ of temperature conditions, reaches 2.5 minutes lag time, and measuring maximum temperature is 1600 ℃, and its cost is also higher.
Given this, goal of the invention of the present utility model is for providing a kind of continuous measurement of molten steel temperature device with characteristics such as economical and practical, highly sensitive, long service life.
Floatation type continuous measurement of molten steel temperature device provided by the utility model in order to achieve the above object is achieved through the following technical solutions: this device comprises temperature transducer and temperature instrumentation; be connected with compensating wire between sensor and the instrument; wherein sensor comprises thermocouple and protection tube thereof; thermocouple is built in the protection tube by alundum tube; contain casting resin between alundum tube and the protection tube; and the openend of protection tube is provided with the terminal box that the compensating wire that is used for temperature instrumentation links to each other with thermocouple wire; be characterized on the protection tube being provided with by refractory material make cursory; this cursory proportion is between slag, and a segment protect pipe that impregnated at least in the molten steel is to adopt by Al
2O
3-Cr-Mo is the cermet protection tube that material is made.
According to the floatation type continuous temperature measurement device that said structure provided, thermocouple wire can adopt the double platinum rhodium thermo wires, is filled with the alumina powder or the magnesia powder casting resin of certain particle size between alundum tube and the cermet protection tube.The cermet protection tube is Al
2O
3The Al that makes for matrix material, a certain proportion of metal material Cr of admixture, Mo
2O
3-Cr-Mo is the cermet protection tube, and it can not only be high temperature resistant, improve service life, and the Cr of institute's admixture, Mo metal material help conducting heat.Be arranged at outer cursory of protection tube, because of its proportion between slag, thereby makes and cursoryly float on molten steel and the slag interface, and the protection tube other end opening on cursory is provided with terminal box.According to floating-type continuous measurement of molten steel temperature device shown in Figure 1, temperature transducer (1) is floating under the cursory effect on molten steel (4) and slag (5) interface, is connected with compensating wire (2) between the terminal box of this device and the temperature instrumentation (3).
The utility model is by floatation type continuous measurement of molten steel temperature device that said structure provided; its temperature transducer can further be realized according to shown in Figure 2; thermocouple wire (20) is arranged in the protection tube by twin-core alundum tube (19); protection tube is connected with cermet protection tube (17) by steel pipe (13) and constitutes; be provided with casting resin (21) between alundum tube (19) and the cermet protection tube (17); and corundum sleeve pipe (18) is set, and also be provided with casting resin (21) between pyrometer fire-end and the corundum sleeve pipe near pyrometer fire-end one end.
As utilizing joint sleeve (15) and the cover core (14) by the internal and external threads structure that both are coupled together between the steel pipe (13) of outer protection tube and the cermet protection tube (17); one end of steel pipe is provided with terminal box (6) and suspension ring (7), and on the steel pipe of this terminal box below heat-insulating shield (8) is set.Cursory (16) adopt the strong refractory material of resistance to slag to make, and counterweight (10) are set on cursory, and this counterweight can adopt steel plate, and heat-barrier material (11) is set on steel plate.Location screw (12) is set on cursory, by location screw mandrel (9) that steel pipe (13), counterweight steel plate (10) and thermal insulation board (11) is fixing cursory in one, fix with welding between location screw mandrel and the steel pipe.
According to the temperature transducer that said structure provided, utilize suspension rod or lifting rope that this device is put into molten steel, this moment, cursory bottom contacted with molten steel, and cursory sidewall contacts with slag, the cermet protection tube that is immersed in the molten steel is generally 200～400mm.When extracting by suspension ring, rapid extraction as far as possible, shortening slag and cermet protection tube time of contact, thus the service life of further improving protection tube.Can be provided with on the thermometric secondary meter that links to each other with compensating wire have the single chip microcomputer data handling system, the giant-screen Temperature numerical shows and continuous temperature measurement curve drafting function device, but and according to functions such as the required design temperature upper and lower limit of actual process and off-limit alarm, the warnings of disconnected idol.Because sensor terminal box place temperature still is higher, in order to reduce systematic error, between temperature transducer and temperature instrumentation, be provided with nickel chromium triangle-nisiloy armoured thermocouple in addition, as indemnifying measure, and in temperature instrumentation, be provided with calibration system with this to temperature transducer double platinum rhodium thermocouple cold junction environment temperature.
The floatation type continuous measurement of molten steel temperature device that the utility model provides has that method is simple, maneuverability, be quick on the draw, characteristics that thermometric is accurate, safe and reliable, economical and practical, the systematic error of continuous measurement of molten steel temperature≤5 ℃, its response time was less than 30 seconds, the highest temperature of measuring is 1750 °, and can reach more than 50 hours following service life 1500～1700 ℃ of normal working temperatures, manufacturing cost is far below the continuous measurement of molten steel temperature device of Japan, thereby can be widely used in the thermometric field in continuous casting and the outer temperature adjustment refining process of various stove.
Claims (7)
1, a kind of floatation type continuous measurement of molten steel temperature device; comprise temperature instrumentation, temperature transducer and compensating wire; wherein sensor comprises thermocouple and protection tube thereof; thermocouple is built in the protection tube by alundum tube; contain casting resin between alundum tube and the protection tube; and the openend of protection tube is provided with the terminal box that the compensating wire that is used for temperature instrumentation links to each other with thermocouple wire; it is characterized in that on the protection tube being provided with by refractory material make cursory; this cursory proportion is between slag, and a segment protect pipe that impregnated at least in the molten steel is to adopt by Al
2O
3-Cr-Mo is the cermet protection tube that material is made;
2, according to the described continuous temperature measurement device of claim 1, it is characterized in that thermocouple wire adopts the double platinum rhodium thermo wires, one of alumina powder or magnesia powder are adopted in the casting resin between alundum tube and the protection tube;
3,, it is characterized in that being provided with in addition between terminal box and the temperature instrumentation nickel chromium triangle-nisiloy armoured thermocouple as the measure of temperature transducer cold junction compensation according to claim 1 or 2 described continuous temperature measurement devices;
4, according to the described continuous temperature measurement device of claim 3, it is characterized in that protection tube is connected with the cermet protection tube by steel pipe and constitutes, casting resin is arranged between alundum tube and the cermet protection tube, and the corundum sleeve pipe is set near pyrometer fire-end one end, and also be provided with casting resin between pyrometer fire-end and the corundum sleeve pipe;
5, according to the described continuous temperature measurement device of claim 4, it is characterized in that utilizing joint sleeve and the cover core by the internal and external threads structure that steel pipe and cermet protection tube are coupled together, one end of steel pipe is provided with terminal box and suspension ring, and on the steel pipe of this terminal box below heat-insulating shield is set;
6, according to the described continuous temperature measurement device of claim 5, it is characterized in that counterweight being set on cursory, on this counterweight heat-barrier material is set, counterweight can adopt steel plate;
7, according to the described continuous temperature measurement device of claim 6, it is characterized in that the location screw being set on cursory, by the location screw mandrel that steel pipe, counterweight steel plate and thermal insulation board is fixing cursory in one, fix with welding between location screw mandrel and the steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92210647 CN2122698U (en) | 1992-04-11 | 1992-04-11 | Floating continuous temperature measuring device for molten steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92210647 CN2122698U (en) | 1992-04-11 | 1992-04-11 | Floating continuous temperature measuring device for molten steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2122698U true CN2122698U (en) | 1992-11-25 |
Family
ID=4955749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92210647 Granted CN2122698U (en) | 1992-04-11 | 1992-04-11 | Floating continuous temperature measuring device for molten steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2122698U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042881A (en) * | 2010-11-05 | 2011-05-04 | 西北化工研究院 | System for measuring outer surface temperature of metal shell of air-flow bed reactor |
| CN102221408A (en) * | 2011-03-10 | 2011-10-19 | 安徽省合普热陶瓷有限责任公司 | Infrared temperature measuring pipe for continuously measuring temperature of molten steel and components, and preparation method thereof |
-
1992
- 1992-04-11 CN CN 92210647 patent/CN2122698U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042881A (en) * | 2010-11-05 | 2011-05-04 | 西北化工研究院 | System for measuring outer surface temperature of metal shell of air-flow bed reactor |
| CN102221408A (en) * | 2011-03-10 | 2011-10-19 | 安徽省合普热陶瓷有限责任公司 | Infrared temperature measuring pipe for continuously measuring temperature of molten steel and components, and preparation method thereof |
| CN102221408B (en) * | 2011-03-10 | 2013-04-03 | 安徽省合普热陶瓷有限责任公司 | Infrared temperature measuring pipe for continuously measuring temperature of molten steel and components, and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |