CN104864969A - Thermocouple for quickly measuring temperature of molten steel and manufacturing method of thermocouple - Google Patents
Thermocouple for quickly measuring temperature of molten steel and manufacturing method of thermocouple Download PDFInfo
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- CN104864969A CN104864969A CN201510338068.5A CN201510338068A CN104864969A CN 104864969 A CN104864969 A CN 104864969A CN 201510338068 A CN201510338068 A CN 201510338068A CN 104864969 A CN104864969 A CN 104864969A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/04—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured not forming one of the thermoelectric materials
- G01K7/06—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured not forming one of the thermoelectric materials the thermoelectric materials being arranged one within the other with the junction at one end exposed to the object, e.g. sheathed type
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- Measuring Temperature Or Quantity Of Heat (AREA)
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Abstract
The invention belongs to the technical field of molten steel temperature measuring components, and discloses a thermocouple for quickly measuring the temperature of molten steel and a manufacturing method of the thermocouple. The thermocouple comprises a U-shaped quartz tube, a thermocouple metal wire, an outer protective sleeve, an inner protective sleeve, a gasket, two compensation leads, a thermocouple packing material and a metal cap, wherein the two ends of the thermocouple metal wire are respectively and fixedly connected with the two compensation leads and then are inserted into the U-shaped quartz tube; the free ends of the two compensation leads penetrate out of the U-shaped outlet of the U-shaped quartz tube; the outer protective sleeve is T-shaped; the inside diameter of the outer protective sleeve is the same as that of the outside diameter of the inner protective sleeve; the inner protective sleeve is inserted into the outer protective sleeve from the bottom end of the outer protective sleeve; the gasket with the same outside diameter with the inner protective sleeve is arranged at the upper end of the inner protective sleeve; the thermocouple packing material is injected to the T-shaped inner cavity of the outer protective sleeve to form a packing material layer to fix the U-shaped quartz tube and the compensation leads; the metal cap is arranged right above the U-shaped quartz tube in a covering manner. The thermocouple has the functions of quickly sampling and accurately measuring.
Description
Technical field
The present invention relates to the temperature element technical field of molten steel, be specifically related to thermopair of a kind of rapid measuring the temperature of melting steel and preparation method thereof.
Background technology
Liquid steel temperature is the important smelting parameter in present steel industry smelting process.The direct motion of guarantee continuous casting production process, reduction raw materials consumption and energy consumption, raising slab quality are had a great impact.It is steel mill system running stability " barometer " that temperature controlled water is put down.The measurement of liquid steel temperature is also a vital link.
In steel smelting procedure, with must filling insulativity and the good inserts of thermal insulation between each position of the thermometric end of thermocouple temperature measurement, otherwise can because of thermode short circuit and heat transfer fast and form thermometric deviation.This thermopair inserts is commonly called as quick hardening cement, and it plays a part steady job silk material support, partiting thermal insulation, is the stable pith of thermocouple temperature measurement.
Since domestic use thermopair, the inserts of thermopair uses acid material always.Acid material is made up of phosphoric acid, light magnesium oxide, aluminium oxide, magnesia, its content or concentration respectively: the phosphoric acid of phosphoric acid Baume formula degree 42,85%; Content 96% light magnesium oxide; The aluminium oxide of content 98.75%; Magnesium content 50% magnesia.But the thermopair made with convention acidic material is unstable, thermometric fluctuation is large.Trace it to its cause, acid material affects greatly by air humidity, is easy to make moist, causes the insulativity of thermopair to decline, have impact on the accuracy of thermopair when thermometric.The above-mentioned drawback of thermopair inserts, becomes each thermopair manufacturer matter of utmost importance urgently to be resolved hurrily for the moment.
In recent years, there is manufacturer to work out multiple water-based inserts, also claimed alkalescence material.Such as patent of invention 201110073077.8, morning of disclosed a kind of good insulating strong, quick-drying refractory wass inserts, the problem that the moisture absorption that can solve thermopair is fast, insulativity declines.But this type of alkalescence material also expose problem very soon in actual use: (1) due to alkalescence material be water-based inserts, when drying along with moisture evaporation, inserts easily produces contraction time dry, the precious metal be filled in alkalescence material is easily pulled off split, and easily there is crackle after drying completes, when thermometric due to immerse molten steel occur temperature sharply increase thermopair end temperature can be caused to can't lock.In order to solve the problem, in practical operation, inserts needs, by its external environment condition humidification, to reach the effect of falling rate of drying in dry link.The appearance of this problem and corresponding means to save the situation, make to prepare thermopair cumbersome, add time cost.If bad at dry Absent measures, still can there are wire breakage, substandard products that inserts is dry and cracked in the thermopair produced.(2) when smelting steel, liquid steel temperature reaches more than 1500 DEG C, and situation about bursting has appearred in the thermopair using alkalescence to expect to produce when measuring liquid steel temperature.Alkalescence material is unstable for very hot state, does not occur bursting situation when using acid material to fill.(3) alkalescence material complicated, raw material is more expensive, and the cost of filling same volume alkalescence material is more than 2.5 times of acid material cost.Liquid steel temperature uses many disposable thermopairs in measuring, and Year's consumption is very considerable numerical value, and in the cheaper smelting steel production cost of pursuit, alkaline inserts brings larger burden.
The convention acidic material existed in prior art affects greatly by air humidity, is easy to make moist, and causes the insulativity of thermopair to decline, have impact on the problem of the accuracy of thermopair when thermometric.Alkalescence material easily produces contraction when existing dry, the tinsel be filled in alkalescence material is easily ruptured and inserts drying easily occurs crackle afterwards; Easily burst when measuring liquid steel temperature; Complicated, the problems such as raw material is more expensive.Can say that alkalescence material is inaccurate, short-life problem when using complicated technology and high cost solution thermocouple temperature measurement.
For above problem, applicant once proposed the patent that application number is 201510152696.4: a kind of acid inserts of quick temperature measurement element of not easily counter tide.Due to originally for how being applied in thermopair, there is the problem of some concrete operation steps, but now to the application solving this inserts, spy files an application in this case.
Summary of the invention
1. the technical matters that will solve
For exist in prior art making rapid measuring the temperature of melting steel thermopair in inserts exist cost high, easily get damp cause poor insulativity, thermal insulation poor, measure inaccurate problem, the invention provides thermopair of a kind of rapid measuring the temperature of melting steel and preparation method thereof.The thermopair of the rapid measuring the temperature of melting steel that it is obtained achieve sampling rapidly, measure object accurately, and low cost of manufacture, easy to use.
2. technical scheme
The composition that the present invention respectively expects at thermopair inserts and proportioning do great many of experiments, has occurred following point respectively: 1) inserts viscosity is inadequate, easily comes off when inserts is connected with the little aluminium cap of thermopair; 2) toast the inserts after coming out of the stove to loosen, do not reach the insulation effect of anticipation; 3) acid inserts still can not solve the problem of moisture regain.Finally when the proportioning of other material and composition similar with convention acidic inserts, there is beyond thought effect in the magnesia that use magnesium content is high.
The thermopair that proportioning of the present invention pours into a mould out overcomes above all defects.The acid inserts of the present invention expects to place the 1-12 month in the environment of same humidity with alkalescence, observes and finds that the rate of moisture absorption of the more alkaline material of the acid inserts rate of moisture absorption of the present invention also wants slow.The insulativity of inserts of the present invention is suitable with the insulativity of alkaline thermopair of expecting, stability, controllability are very good.The temperature of environment and the insulativity of humidity on the acid inserts of the present invention affect little, and more alkaline material ratio greatly reduces cost.
Object of the present invention is achieved through the following technical solutions:
A thermopair for rapid measuring the temperature of melting steel, comprises U-shaped quartz ampoule, thermo-electric metal silk, outer sheath tube, inner sheath pipe, pad and compensating wire, also comprises thermopair inserts and metal cap; Wherein: thermo-electric metal silk is fixedly connected with rear insertion U-shaped quartz ampoule with respectively with 2, two ends compensating wire, the free end of 2 compensating wires is passed in " U " shape outlet of U-shaped quartz ampoule; Outer sheath tube is in " T " font, and outer sheath tube bottom inner diameter is identical with the external diameter of inner sheath pipe, and inner sheath pipe is from the seamless insertion outer sheath tube in the bottom of outer sheath tube, and the upper end of inner sheath pipe arranges the pad of same external diameter; Article 2, the free end of compensating wire is connected with sensor through pad; " T " font internal cavities formation filling bed of material that thermopair inserts injects outer sheath tube is fixed U-shaped quartz ampoule and compensating wire; Metal cap inserts fills bed of material top and covers on directly over U-shaped quartz ampoule.
Preferred scheme, metal cap center is just being inserted the center of the casting area of thermopair inserts and is being filled in the bed of material; The step surface of " T " prefix of outer sheath tube arranges the locating ring of U-shaped quartz ampoule.
Further scheme is mud head below U-shaped quartz ampoule; It more than mud head is thermopair inserts.
Further scheme, the center, top of metal cap arranges preheating gate, and material is iron or aluminium.
Further scheme, thermopair inserts is the acid inserts of quick temperature measurement element not easily got damp, and outer sheath tube and inner sheath pipe are that paper material makes.
Further scheme, the acid inserts of the quick temperature measurement element not easily got damp is expected than liquid material 1:3 admittedly by mass fraction, through stirring, cast, leave standstill, roasting procedure is prepared from; Liquid material is by light magnesium oxide 0.9-1.1 part, water 4.5-5 part, phosphoric acid 5.3-5.6 part three kinds of mixing of materials; Gu material is mixed with aluminium oxide 3.8-4.5 part by magnesia 0.96-1.2 part of magnesium content 94-98%.
Further scheme, liquid material is by light magnesium oxide 0.9-1.1 part of 95-97%, water 4.5-5 part, 82-86% phosphoric acid 5.3-5.6 part three kinds of mixing of materials; Gu material is mixed with aluminium oxide 3.8-4.5 part of 97-98% by magnesia 0.96-1.2 part of magnesium content 94-98%.
Further scheme, liquid material by 96% light magnesium oxide 1 part, 5 parts, water, 85% phosphoric acid, 5.3 parts of three kinds of mixing of materials; Gu material is mixed with 4 parts, the aluminium oxide of 98.75% by 1 part, the magnesia of magnesium content 95%.
Further scheme, the making of the acid inserts of the quick temperature measurement element not easily got damp comprises the steps:
A, preparation liquid material: light magnesium oxide, water, tricresyl phosphate kind material fully stir, and concentration reaches Bo Meishi degree 40-44, then place 7-30 days;
B, the solid material of preparation: magnesia mixes with aluminium oxide;
C, solid material fully stir into pasty state with liquid material weight ratio 1:2, place 24h, finally toast after cast.
A method for making for the thermopair of rapid measuring the temperature of melting steel, comprises the steps:
A, line: be fixedly connected with by respectively with 2, the two ends compensating wire of thermo-electric metal silk and insert U-shaped quartz ampoule, pass the free end of 2 compensating wires in " U " shape outlet of U-shaped quartz ampoule;
B, threading: the free end of 2 compensating wires is connected with sensor through pad;
C, sleeve pipe connect: locating ring from the seamless insertion outer sheath tube in the bottom of outer sheath tube, then is inserted on the step surface of " T " prefix of outer sheath tube by inner sheath pipe;
D, location: U-shaped quartz ampoule inserts the inner annular edge of locating ring, then the pad being installed with 2 compensating wires is placed in the upper surface of inner sheath pipe;
E, cast: poured into a mould in " T " font internal cavities of outer sheath tube by the pasty state material before acid for the quick temperature measurement element not easily got damp inserts baking, U-shaped quartz ampoule exceeds casting area;
F, to attach the names of pre-determined candidates: metal cap is inserted in inserts outside U-shaped quartz ampoule, and covers on directly over U-shaped quartz ampoule; Leave standstill 24h;
G, baking: proceed to baking in baking oven;
H, cooling: after taking out cooling after baking in baking oven, be finished product.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following remarkable result:
(1) thermopair of rapid measuring the temperature of melting steel of the present invention, thermopair inserts plays insulation and fixing effect; Metal cap plays effect U-shaped quartz ampoule being played to protection before thermopair is fed into measuring temp of molten steel; Outer sheath tube and inner sheath pipe play protection against the tide and the protective effect to compensating wire; By the thermopair of their obtained rapid measuring the temperature of melting steel achieve sampling rapidly, measure object accurately, and low cost of manufacture, easy to use;
(2) thermopair of rapid measuring the temperature of melting steel of the present invention, metal cap center is just being inserted the center of the casting area of thermopair inserts and is being filled in the bed of material, and when avoiding metal cap thermometric, after fusing, U-shaped quartz ampoule is heated and unevenly affects the accurate of thermometric; The setting of locating ring, ensure that the position of U-shaped quartz ampoule in center, prevents U-shaped quartz ampoule to be heated inequality further;
(3) thermopair of rapid measuring the temperature of melting steel of the present invention is mud head below U-shaped quartz ampoule, more than mud head is thermopair inserts, dualistic formula inserts, and the cost of mud head, lower than thermopair inserts, namely ensure that insulation and fixed effect, again reduces cost;
(4) thermopair of rapid measuring the temperature of melting steel of the present invention, the setting of preheating gate, when thermometric, partial heat enters metal cap in advance by preheating gate and carries out preheating to it, effectively avoid metal cap to affect its fusing because internal/external heating is uneven, finally affect being heated of U-shaped quartz ampoule; Material is iron or aluminium, and at aerobic operation aluminium cap, anaerobic operation adopts chapeau de fer, improves its versatility;
(5) thermopair of rapid measuring the temperature of melting steel of the present invention, thermopair inserts is the acid inserts of quick temperature measurement element not easily got damp, and the effective shelf-life of improving thermopair, even if long storage time also can be applied; Outer sheath tube and inner sheath pipe are that paper material makes, and cost is low, and moisture effect is good;
(6) thermopair of rapid measuring the temperature of melting steel of the present invention, in acid inserts batching, phosphoric acid ensures its viscosity, is unlikely to too to loosen, firm when being connected with miscellaneous part;
(7) thermopair of rapid measuring the temperature of melting steel of the present invention, more traditional acidity material is compared, and does not have the phenomenon of the moisture absorption, can keep stable insulativity, thus can obtain stable effective data in thermopair uses;
(8), in measuring temp of molten steel, there is not phenomenons such as bursting in the thermopair of rapid measuring the temperature of melting steel of the present invention, can have stronger stability for extreme thermal environment;
(9) thermopair of rapid measuring the temperature of melting steel of the present invention, cost is 1/5 of alkalescence material cost, meet the performance requirements such as the viscosity of thermopair inserts needs, heat insulation, insulation completely, thermopair alkalescence inserts can be substituted completely, the acid inserts of simultaneously the present invention in dry link without the need to environment humidification, falling rate of drying;
(10) method of making thermopair of the present invention, operation is simple, can pipelining, can also realize electric automatization further and produce;
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the embodiment of the present invention 3;
Fig. 3 is the structural representation of the embodiment of the present invention 5.
Reference numeral: 1, metal cap; 2, U-shaped quartz ampoule; 3, thermo-electric metal silk; 4, thermopair inserts; 5, outer sheath tube; 6, inner sheath pipe; 7, pad; 8, locating ring; 9, compensating wire; 11, preheating gate; 12, mud head; 13, plastic stent; 100, sensor; 101, display.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the present invention is described in detail.
Embodiment 1
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, as shown in Figure 1, comprises U-shaped quartz ampoule 2, thermo-electric metal silk 3, outer sheath tube 5, inner sheath pipe 6, pad 7 and compensating wire 9, also comprises thermopair inserts 4 and metal cap 1; Outer sheath tube 5 and inner sheath pipe 6 are paper material making; Wherein: thermo-electric metal silk 3 is fixedly connected with rear insertion U-shaped quartz ampoule 2 with respectively with 2, two ends compensating wire 9, the free end of 2 compensating wires 9 is passed in " U " shape outlet of U-shaped quartz ampoule 2; Outer sheath tube 5 is in " T " font, and outer sheath tube 5 bottom inner diameter is identical with the external diameter of inner sheath pipe 6, and inner sheath pipe 6 is from the seamless insertion outer sheath tube 5 in the bottom of outer sheath tube 5, and the upper end of inner sheath pipe 6 arranges the pad 7 of same external diameter; Article 2, the free end of compensating wire 9 is connected with sensor through pad 7; " T " font internal cavities formation filling bed of material that thermopair inserts 4 injects outer sheath tube 5 is fixed U-shaped quartz ampoule 2 and compensating wire 9; Metal cap 1 inserts fills bed of material top and covers on directly over U-shaped quartz ampoule 2.Metal cap 1 material is irony.
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, in concrete use procedure, this thermopair is immersed in molten steel, metal cap 1 melts, temperature signal is converted into thermopower signal feedback to sensor by the thermo-electric metal silk 3 in U-shaped quartz ampoule 2 by the temperature of molten steel, and shown by temperature indicator and then take out fast, under the prerequisite that outer sheath tube 5 and inner sheath pipe 6 are not destroyed, can repeatedly detect, but because metal cap 1 melts, lose protective effect, therefore, also be etched after destruction loses its protective action in outer sheath tube 5 and inner sheath pipe 6, take out destroyed as U-shaped quartz ampoule 2, thermo-electric metal silk 3 etc., can reuse.
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, thermopair inserts 4 plays insulation and fixing effect; Metal cap 1 plays effect U-shaped quartz ampoule 2 being played to protection before thermopair is fed into measuring temp of molten steel; Outer sheath tube 5 and inner sheath pipe 6 play protection against the tide and the protective effect to compensating wire 9; By the thermopair of their obtained rapid measuring the temperature of melting steel achieve sampling rapidly, measure object accurately, and low cost of manufacture, easy to use.
Embodiment 2
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, by the effort of inventor, and has carried out a series of test, has carried out some and has improved.
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, its basic structure is with embodiment 1, and improvements are: metal cap 1 center is just being inserted the center of the casting area of thermopair inserts 4 and filled in the bed of material; The step surface of " T " prefix of outer sheath tube 5 arranges the locating ring 8 of U-shaped quartz ampoule 2.The center, top of metal cap 1 arranges preheating gate 11, and material is aluminium; Thermopair inserts 4 is the acid inserts of quick temperature measurement element not easily got damp; The acid inserts of the quick temperature measurement element that not easily gets damp is expected to form than liquid material 1:3 by mass fraction admittedly, liquid material by 95% light magnesium oxide 0.9 part, 4.5 parts, water, 82% phosphoric acid, 5.3 parts of three kinds of mixing of materials; Gu material is mixed with 3.8 parts, the aluminium oxide of 97% by 0.96 part, the magnesia of magnesium content 94%; The making of the acid inserts of the quick temperature measurement element not easily got damp comprises the steps:
A, preparation liquid material: light magnesium oxide, water, tricresyl phosphate kind material fully stir, and concentration reaches Bo Meishi degree 40, then place 7 days;
B, the solid material of preparation: magnesia mixes with aluminium oxide;
C, solid material fully stir into pasty state with liquid material weight ratio 1:2, place 24h after cast.
The method for making of the thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, comprises the steps:
A, line: be fixedly connected with by respectively with 2, the two ends compensating wire 9 of thermo-electric metal silk 3 and insert U-shaped quartz ampoule 2, pass the free end of 2 compensating wires 9 in " U " shape outlet of U-shaped quartz ampoule 2;
B, threading: the free end of 2 compensating wires 9 is connected with sensor through pad 7;
C, sleeve pipe connect: locating ring 8 from the seamless insertion outer sheath tube 5 in the bottom of outer sheath tube 5, then is inserted on the step surface of " T " prefix of outer sheath tube 5 by inner sheath pipe 6;
D, location: U-shaped quartz ampoule 2 inserts the inner annular edge of locating ring 8, then the upper surface pad 7 being installed with 2 compensating wires 9 being placed in inner sheath pipe 6;
E, cast: poured into a mould in " T " font internal cavities of outer sheath tube 5 by the pasty state material before acid for the quick temperature measurement element not easily got damp inserts baking, U-shaped quartz ampoule 2 exceeds casting area;
F, to attach the names of pre-determined candidates: metal cap 1 is inserted in inserts outside U-shaped quartz ampoule 2, and covers on directly over U-shaped quartz ampoule 2; Leave standstill 24h;
G, baking: proceed to baking in baking oven, temperature 70 C, 24 hours time;
H, cooling: after taking out cooling after baking in baking oven, be finished product.
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, metal cap center is just being inserted the center of the casting area of thermopair inserts and is being filled in the bed of material, and when avoiding metal cap thermometric, after fusing, U-shaped quartz ampoule is heated and unevenly affects the accurate of thermometric; The setting of locating ring, ensure that the position of U-shaped quartz ampoule in center, prevents U-shaped quartz ampoule to be heated inequality further; The setting of preheating gate, when thermometric, partial heat enters metal cap in advance by preheating gate and carries out preheating to it, effectively avoids metal cap to affect its fusing because internal/external heating is uneven, finally affects being heated of U-shaped quartz ampoule; Metal cap material is aluminium, selects in aerobic operation; Thermopair inserts is the acid inserts of quick temperature measurement element not easily got damp, and the effective shelf-life of improving thermopair, even if long storage time also can be applied; Outer sheath tube and inner sheath pipe are that paper material makes, and cost is low, and moisture effect is good; In acid inserts batching, phosphoric acid ensures its viscosity, is unlikely to too to loosen, firm when being connected with miscellaneous part; More traditional acidity material is compared, and does not have the phenomenon of the moisture absorption, can keep stable insulativity, thus can obtain stable effective data in thermopair uses.
, in measuring temp of molten steel, there is not phenomenons such as bursting in the thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, can have stronger stability for extreme thermal environment; Under the prerequisite that U-shaped quartz ampoule does not damage, thermometric can be repeated about 3 times; Whole thermopair cost of manufacture is 1/5 of alkalescence material cost, meet the performance requirements such as the viscosity of thermopair inserts needs, heat insulation, insulation completely, thermopair alkalescence inserts can be substituted completely, simultaneously the acid inserts of the present embodiment in dry link without the need to environment humidification, falling rate of drying.
Embodiment 3
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, its basic structure is with embodiment 2, and difference is: metal cap 1 material is iron, is applicable in anaerobic operation.As shown in Figure 2, U-shaped quartz ampoule less than 2 is mud head 12; Mud head more than 12 is thermopair inserts 4; Liquid material by 97% light magnesium oxide 1.1 parts, 5 parts, water, 86% phosphoric acid, 5.6 parts of three kinds of mixing of materials; Gu material is mixed with 4.5 parts, the aluminium oxide of 98% by 1.2 parts, the magnesia of magnesium content 98%.The making of the acid inserts of the quick temperature measurement element not easily got damp comprises the steps:
A, preparation liquid material: light magnesium oxide, water, tricresyl phosphate kind material fully stir, and concentration reaches Bo Meishi degree 44, then place 30 days;
B, the solid material of preparation: magnesia mixes with aluminium oxide;
C, solid material fully stir into pasty state with liquid material weight ratio 1:2, place 24h after cast.
The method for making of the thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, making step is with embodiment 2.
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, inserts is dualistic formula inserts, and the cost of mud head, lower than thermopair inserts, namely ensure that insulation and fixed effect, reduce further cost again.
Embodiment 4
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, its basic structure is with embodiment 3, and difference is: liquid material by 96% light magnesium oxide 1 part, 5 parts, water, 85% phosphoric acid, 5.3 parts of three kinds of mixing of materials; Gu material is mixed with 4 parts, the aluminium oxide of 98.75% by 1 part, the magnesia of magnesium content 95%.Its making comprises the steps:
A, preparation liquid material: light magnesium oxide, water, tricresyl phosphate kind material fully stir, and concentration reaches Bo Meishi degree 42, then place 18 days;
B, the solid material of preparation: magnesia mixes with aluminium oxide;
C, solid material fully stir into pasty state with liquid material weight ratio 1:2, place 24h, finally toast after cast.
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, in thermopair inserts, each composition is optimal proportion, and the shelf-life of obtained thermopair is than the similar time long 50%.
Embodiment 5
The thermopair of a kind of rapid measuring the temperature of melting steel of the present embodiment, as shown in Figure 3, comprises U-shaped quartz ampoule 2, thermo-electric metal silk 3, mud head 12, plastic stent 13 and compensating wire 9, also comprises thermopair inserts 4 and metal cap 1; Wherein: thermo-electric metal silk 3 is fixedly connected with rear insertion U-shaped quartz ampoule 2 with respectively with 2, two ends compensating wire 9, the free end of 2 compensating wires 9 is passed in " U " shape outlet of U-shaped quartz ampoule 2; Mud head 12 is in " T " font, and there is the T-shaped cavity of both ends open inside; Plastic stent 13 has the tower structure of set collar in head, there is the tower-like cavity of top seal inside, and seamless insertion T-shaped cavity inside is until the bottom of mud head 12, and bottom plastic stent 13, external diameter is identical with the bottom inner diameter of mud head 12; U-shaped quartz ampoule 2 upper end is fixed in the set collar of plastic stent 13 head; Article 2, compensating wire 9 free end along plastic stent 13 outer wall stagger pass mud head 12 bottom after be connected with sensor 100; Sensor 100 is connected with display 101." T " font internal cavities formation filling bed of material that thermopair inserts 4 injects mud head 12 is fixed U-shaped quartz ampoule 2 and plastic stent 13; Metal cap 1 inserts fills bed of material top and covers on directly over U-shaped quartz ampoule 2, and its top has preheating gate 11.
The thermopair of the rapid measuring the temperature of melting steel of the present embodiment, directly instead of inner/outer sheath pipe and the positioning element such as pad, locating ring with mud head 12 and plastic stent 13, reduce further cost of manufacture.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (10)
1. the thermopair of a rapid measuring the temperature of melting steel, comprise U-shaped quartz ampoule (2), thermo-electric metal silk (3), outer sheath tube (5), inner sheath pipe (6), pad (7) and compensating wire (9), it is characterized in that: also comprise thermopair inserts (4) and metal cap (1); Wherein:
Described thermo-electric metal silk (3) is fixedly connected with rear insertion U-shaped quartz ampoule (2) with respectively with 2, two ends compensating wire (9), passes the free end of 2 compensating wires (9) in " U " shape outlet of U-shaped quartz ampoule (2);
Described outer sheath tube (5) is in " T " font, outer sheath tube (5) bottom inner diameter is identical with the external diameter of inner sheath pipe (6), inner sheath pipe (6) is from the seamless insertion outer sheath tube (5) in the bottom of outer sheath tube (5), and the upper end of inner sheath pipe (6) arranges the pad (7) of same external diameter; Article 2, the free end of compensating wire (9) is connected with sensor through pad (7);
" T " font internal cavities formation filling bed of material that described thermopair inserts (4) injects outer sheath tube (5) is fixed U-shaped quartz ampoule (2) and compensating wire (9);
Described metal cap (1) inserts fills bed of material top and covers on directly over U-shaped quartz ampoule (2).
2. the thermopair of rapid measuring the temperature of melting steel according to claim 1, is characterized in that, described metal cap (1) center is just being inserted the center of the casting area of thermopair inserts (4) and filled in the bed of material; The step surface of " T " prefix of outer sheath tube (5) arranges the locating ring (8) of U-shaped quartz ampoule (2).
3. the thermopair of rapid measuring the temperature of melting steel according to claim 1 or 2, it is characterized in that, described U-shaped quartz ampoule (2) is mud head (12) below; More than mud head (12) be thermopair inserts (4).
4. the thermopair of rapid measuring the temperature of melting steel according to claim 1 or 2, it is characterized in that, the center, top of described metal cap (1) arranges preheating gate (11), and material is iron or aluminium.
5. the thermopair of rapid measuring the temperature of melting steel according to claim 4, is characterized in that, described thermopair inserts (4) is the acid inserts of quick temperature measurement element not easily got damp; Described outer sheath tube (5) and inner sheath pipe (6) are paper material making.
6. the thermopair of rapid measuring the temperature of melting steel according to claim 5, is characterized in that, the acid inserts of the described quick temperature measurement element not easily got damp is expected than liquid material 1:3 admittedly by mass fraction, through stirring, cast, leave standstill, roasting procedure is prepared from; Described liquid material is by light magnesium oxide 0.9-1.1 part, water 4.5-5 part, phosphoric acid 5.3-5.6 part three kinds of mixing of materials; Described solid material is mixed with aluminium oxide 3.8-4.5 part by magnesia 0.96-1.2 part of magnesium content 94-98%.
7. the thermopair of rapid measuring the temperature of melting steel according to claim 6, is characterized in that, described liquid material is by light magnesium oxide 0.9-1.1 part of 95-97%, water 4.5-5 part, 82-86% phosphoric acid 5.3-5.6 part three kinds of mixing of materials; Described solid material is mixed with aluminium oxide 3.8-4.5 part of 97-98% by magnesia 0.96-1.2 part of magnesium content 94-98%.
8. the thermopair of rapid measuring the temperature of melting steel according to claim 6, is characterized in that, described liquid material by 96% light magnesium oxide 1 part, 5 parts, water, 85% phosphoric acid, 5.3 parts of three kinds of mixing of materials; Described solid material is mixed with 4 parts, the aluminium oxide of 98.75% by 1 part, the magnesia of magnesium content 95%.
9. the thermopair of rapid measuring the temperature of melting steel according to claim 8, is characterized in that, the making of the acid inserts of the described quick temperature measurement element not easily got damp comprises the steps:
A, preparation liquid material: light magnesium oxide, water, tricresyl phosphate kind material fully stir, and concentration reaches Bo Meishi degree 40-44, then place 7-30 days;
B, the solid material of preparation: magnesia mixes with aluminium oxide;
C, solid material fully stir into pasty state with liquid material weight ratio 1:2, place 24h, finally toast after cast.
10. a method for making for the thermopair of rapid measuring the temperature of melting steel according to claim 9, comprises the steps:
A, line: respectively with 2, the two ends compensating wire (9) of thermo-electric metal silk (3) be fixedly connected with and insert U-shaped quartz ampoule (2), pass the free end of 2 compensating wires (9) in " U " shape outlet of U-shaped quartz ampoule (2);
B, threading: the free end of 2 compensating wires (9) is connected with sensor through pad (7);
C, sleeve pipe connect: locating ring (8) from the seamless insertion outer sheath tube (5) in the bottom of outer sheath tube (5), then is inserted on the step surface of " T " prefix of outer sheath tube (5) by inner sheath pipe (6);
D, location: U-shaped quartz ampoule (2) inserts the inner annular edge of locating ring (8), then the pad (7) being installed with 2 compensating wires (9) is placed in the upper surface of inner sheath pipe (6);
E, cast: poured into a mould in " T " font internal cavities of outer sheath tube (5) by the pasty state material before acid for the quick temperature measurement element not easily got damp inserts baking, U-shaped quartz ampoule (2) exceeds casting area;
F, to attach the names of pre-determined candidates: metal cap (1) is inserted in inserts along U-shaped quartz ampoule (2) outside, and covers on directly over U-shaped quartz ampoule (2); Leave standstill 24h;
G, baking: proceed to baking in baking oven;
H, cooling: after taking out cooling after baking in baking oven, be finished product.
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| CN201711135172.XA CN107830942B (en) | 2015-06-17 | 2015-06-17 | A kind of production method of the thermocouple of rapid measuring the temperature of melting steel |
| CN201510338068.5A CN104864969B (en) | 2015-06-17 | 2015-06-17 | A kind of thermocouple of rapid measuring the temperature of melting steel and preparation method thereof |
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| CN201510338068.5A CN104864969B (en) | 2015-06-17 | 2015-06-17 | A kind of thermocouple of rapid measuring the temperature of melting steel and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111855025A (en) * | 2020-07-24 | 2020-10-30 | 机械科学研究总院海西（福建）分院有限公司 | Automatic temperature measurement sampling equipment for steelmaking and temperature measurement sampling method thereof |
| CN115922173A (en) * | 2023-03-15 | 2023-04-07 | 辛集市科鑫冶金设备有限公司 | Thermocouple welding wire threading equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111044554A (en) * | 2019-12-27 | 2020-04-21 | 郑州机械研究所有限公司 | Method for testing molten iron cooling curves |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107830942B (en) | 2019-09-03 |
| CN104864969B (en) | 2017-12-26 |
| CN107830942A (en) | 2018-03-23 |
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