CN107058660A - Means for correcting for thermocouple temperature measurement in blast furnace - Google Patents
Means for correcting for thermocouple temperature measurement in blast furnace Download PDFInfo
- Publication number
- CN107058660A CN107058660A CN201710118242.4A CN201710118242A CN107058660A CN 107058660 A CN107058660 A CN 107058660A CN 201710118242 A CN201710118242 A CN 201710118242A CN 107058660 A CN107058660 A CN 107058660A
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- China
- Prior art keywords
- blast furnace
- casing
- temperature measurement
- correcting
- sound
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to a kind of means for correcting for thermocouple temperature measurement in blast furnace, there is solid filler in casing, two parallel blast furnace special electric thermo-couples are buried in casing in the inserts of the left side, thermocouple temperature sensitive end is in close contact with solid filler, and the other end is fixed on casing；The cavity of sound wave temperature measurement fraction is embedded with the solid filler of the right；Filled in cavity and pacify sound-producing device on low-pressure inert gas, cavity wall, inside there are two acoustic receiver devices；The receiving terminal of sound-producing device harmony wave receiving device is in the height direction on same straight line, and the distance between two reception devices are fixed, and two blast furnace special electric thermo-couples are with reception device with high.The present invention is embedded in the molten iron such as Blast Furnace Bottom, iron mouthful neighbouring, blast furnace bottom side and washes away the violent or big position of temperature change, the blast furnace thermocouple on the left side, the sound wave temperature measuring equipment on the right can measure the real time temperature of corresponding site in blast furnace, and the right can correct the left side.The present invention is simple in construction, change convenient, and measurement result is accurate.
Description
Technical field
The present invention relates to temperature control in blast furnace and the technical field of monitoring device, and in particular to one kind is used for heat in blast furnace
The means for correcting of galvanic couple thermometric.
Background technology
It is the important component of steel and iron industry, to steelmaker as the blast furnace ironmaking of steel and iron industry upstream main body process
The development of industry and energy-conservation of consumption reduction have important influence status, and wherein blast furnace temperature is always blast furnace worker concern and research
Important Problems, blast furnace temperature is also the guarantee of smooth operation of furnace, while being an important indicator for judging conditions of blast furnace.Foundation can refer to
Lead blast furnace ironmaking personnel and carry out Control for Kiln Temperature and furnace temperature status monitoring not only with important theory value, and with important
Production practices value.To the accurate forecast of furnace temperature, it will help improve blast-furnace process level, so as to reach that raising blast furnace is utilized
The purpose of coefficient and reduction coke ratio.However, at present in blast furnace by near iron mouthful, blast furnace bottom, Blast Furnace Bottom corner etc.
The technology that the embedded blast furnace special electric thermo-couple in region carrys out thermometric is defective.The working of a furnace is complicated in one side blast furnace, some position iron
Water is washed away acutely, and loosening occurs in the blast furnace special electric thermo-couple nearby buried, and temperature-sensitive end can not be in close contact with measurement target
Cause measured temperature unreliable.On the other hand, the working environment of special electric thermo-couple may badly be allowed to damage and cause measurement
Temperature is inaccurate.
If blast furnace temperature can be predicted and be controlled exactly, be on the one hand advantageously implemented blast furnace ironmaking process from
Dynamicization, improves ironmaking level；On the other hand it is also favourable to the extension life of the blast furnace.Therefore sound wave thermometry is incorporated into by the present invention
In blast furnace, temperature measuring equipment can be served as, the temperature-measuring results of blast furnace thermocouple can be also corrected, so as to monitor whether blast furnace thermocouple is located
In normal operating conditions.
The content of the invention
The purpose of patent of the present invention is to be directed to above-mentioned present situation, it is desirable to provide a kind of simple in construction, embedded and maintenance is convenient, into
This is relatively low, and what measurement result accurately polluted is used for the means for correcting of thermocouple temperature measurement in blast furnace.
The implementation of the purpose of the present invention is：For the means for correcting of thermocouple temperature measurement in blast furnace, casing is interior by solid
Inserts is filled；Two parallel blast furnace special electric thermo-couples are embedded with casing in the inserts on the left side, thermocouple temperature sensitive end is with filling out
Close contact between thing is filled, the other end is improved and is fixed on by copper wire on casing；Buried in casing in the inserts on the right
There is the cavity of sound wave temperature measurement fraction；Being equipped with filled with low-pressure inert gas in cavity, on cavity wall in sound-producing device, cavity has two sound
Wave receiving device；The receiving terminal of two sound-producing device harmony wave receiving devices is on the same line in the height direction, and two
The distance between reception device is fixed S；Two blast furnace special electric thermo-couples are with reception device with height；The S=80mm.
The present invention be embedded in Blast Furnace Bottom, iron mouthful nearby, the molten iron such as blast furnace bottom side washes away acutely or temperature change is big
In position, such as ceramic cup corner, Blast Furnace Bottom sealing plate both sides, the course of work, the blast furnace thermocouple in left side can measure blast furnace
The real time temperature of interior corresponding site, the sound wave temperature measuring equipment on right side can also measure the real time temperature at same position, and the sound on right side
The temperature that ripple temperature measuring equipment is measured can correct the authenticity of the blast furnace thermocouple thermometric in left side, and the temperature measured is relative to blast furnace
The temperature that thermocouple is measured is more accurate.
The present invention has the positive effect that：
1st, blast furnace thermocouple thermometric and sound wave thermometric are used simultaneously, two kinds of thermometric modes can be contrasted, and make the temperature measured
Degree is more accurate, to pass through the result comprehensive descision working of a furnace；
2nd, because sound wave temperature measuring equipment is set up on right side, whether sound wave temperature measuring equipment may determine that buried blast furnace thermocouple
Whether normal work is damaged；
3rd, it is located in entirety in casing, buries and overhaul more convenient, casing and inserts have protective effect to thermocouple,
Therefore without consider thermocouple because working environment it is severe caused by temperature-sensitive end loosen situation occur；
4th, simple in construction and practical, measurement effect is good, and cost is relatively low.
The present invention is simple in construction, embedded and maintenance is convenient, cost is relatively low and measurement result is accurate.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention,
Fig. 2 is present invention right side half-sectional view.
Embodiment
The present invention is further detailed below in conjunction with the accompanying drawings.
Filled in reference picture 1,2, casing 1 by solid filler 2.The material of the casing 1 is easy heat conduction high-temperature flame-proof material
Material, will not produce barrier to heat transfer.The casing is 400 × 200 × 200mm casing, and the solid filler is charcoal
The small block refractory material of brick, block inserts is in the same size, and composition is uniform, can reasonably fill the rest of trunkful body.
Two parallel blast furnace special electric thermo-couples, thermocouple temperature sensitive end and filler are embedded with casing in the inserts on the left side
Between be in close contact；The other end is improved and is fixed on by copper wire 7 on casing.Cavity size is 80 × 60 × 160mm.It is described
Blast furnace special electric thermo-couple is the special HTHP thermocouple of blast furnace, model WRNG-430, using " K " Graduation Number.The copper
Wire 7 processed is that the intensity having can fix support thermocouple and acoustic receiver device, and current signal can be transferred into case
External wire.
The cavity 3 of sound wave temperature measurement fraction is embedded with inserts on the right of casing, cavity 3 is 80 × 60 × 160mm
Small cuboid.Filled with low-pressure inert gas in cavity, low-pressure inert gas is nitrogen, and internal pressure is 0.5atm, and nitrogen exists
Property is stable at a temperature of blast furnace work.
Sound-producing device 5 is equipped with cavity wall, interior sound wave receiving device 4, the harmony wave receiving device 4 of sound-producing device 5 connects
Receiving end is on the same line on height Z-direction direction.The sound-producing device 5 and acoustic receiver device 4 can be in blast furnaces
At a temperature of normal work.Two blast furnace special electric thermo-couples are with reception device with height.
The sound-producing device 5, acoustic signals reception device 4 are ultrasonic miniature normal probes, and model is 2.5P6, by shell,
Diaphragm, piezoelectric chip, sound-absorbing material etc. are constituted, and transmitting/reception of ultrasonic wave is completed by piezoelectric chip；Diaphragm is using high
Hardness corundum piece, high temperature resistant；Sound-absorbing material is used for absorbing the noise of chip back surface.
The distance between two reception devices in cavity are fixed S, the S=80mm.
The general principle of the present invention is that the spread speed based on sound wave in gas medium is the gas component and definitely warm
The function of degree, because the distance between two acoustic receiver devices 4 S is known constant, is filled by measuring sound wave in two receptions
Put the propagation time t between 4, it may be determined that average speed c of the sound wave on propagation path.Further according to formula：
C in formula：The spread speed m/s of sound wave；
γ：Gas adiabatic exponent (is equal to the ratio between specific heat at constant pressure and specific heat at constant volume)；
R：Gas constant, 8.314J/ (molk)；
m：Gas molar amount, kg/mol；
T：Gas absolute temperature, K；
γ R/m=Z, are constant for specific gas Z.
Just the mean temperature of inert gas on acoustic wave propagation path can be obtained.And, solid filler small in cavity volume
Contacted with air-tight in cavity, casing and solid filler heat transfer it is good under conditions of it is believed that the temperature of empty intracavity gas with
Solid filler temperature is consistent.
From analysis above, using in velocity measurement blast furnace during local temperature it needs to be determined that following basic physics
Amount：1st, the distance between two acoustic receiver devices；2nd, constituent, the state parameter of gas are tested, so that it is determined that gas
Adiabatic exponent and gas constant；3rd, the propagation time between the reception device of sound wave two.
The present invention be embedded in Blast Furnace Bottom, iron mouthful nearby, the molten iron such as blast furnace bottom side washes away acutely or temperature change is big
In position, such as ceramic cup corner, Blast Furnace Bottom sealing plate both sides, the course of work, the blast furnace thermocouple on the left side can measure blast furnace
The real time temperature of interior corresponding site, the sound wave temperature measuring equipment on the right can also measure the real time temperature at same position, and the sound on the right
The temperature that ripple temperature measuring equipment is measured can correct the authenticity of the blast furnace thermocouple thermometric on the left side, and the temperature measured is relative to blast furnace
The temperature that thermocouple is measured is more accurate.
The present invention is simple in construction, easy to use, measurement result is accurate, service life is long.
Claims (9)
1. the means for correcting for thermocouple temperature measurement in blast furnace, it is characterised in that：Filled in casing by inserts；The left side in casing
Inserts in be embedded with two parallel blast furnace special electric thermo-couples, between thermocouple temperature sensitive end and filler be in close contact, it is another
Improve and be fixed on by copper wire on casing in end；The cavity of sound wave temperature measurement fraction is embedded with casing in the inserts on the right；
Being equipped with filled with low-pressure inert gas in cavity, on cavity wall in sound-producing device, cavity has two acoustic receiver devices；Two sound-producing devices
The receiving terminal of harmony wave receiving device is on the same line in the height direction, and the distance between two reception devices are solid
Fixed S；Two blast furnace special electric thermo-couples are with reception device with height；
The S=80mm.
2. it is used for the means for correcting of thermocouple temperature measurement in blast furnace according to right 1, it is characterised in that:The special high temperature of blast furnace
High pressure thermojunction, model WRNG-430, using " K " Graduation Number.
3. it is used for the means for correcting of thermocouple temperature measurement in blast furnace according to right 1, it is characterised in that:Sound-producing device (5), sound
Ripple signal receiving device (4) is ultrasonic miniature normal probe, and model is 2.5P6, by shell, diaphragm, piezoelectric chip, sound absorption material
Material composition.
4. it is used for the means for correcting of thermocouple temperature measurement in blast furnace according to right 1, it is characterised in that:The material of the casing
It is easy heat conduction high-temperature refractory, barrier will not be produced to heat transfer.
5. it is used for the means for correcting of thermocouple temperature measurement in blast furnace according to right 1, it is characterised in that:Cavity is 80 × 60 ×
160mm small cuboid
6. it is used for the means for correcting of thermocouple temperature measurement in blast furnace according to right 1, it is characterised in that:In cavity filled with it is low
It is nitrogen to press inert gas, and internal pressure is 0.5atm.
7. it is used for the means for correcting of thermocouple temperature measurement in blast furnace according to right 1, it is characterised in that:Copper wire is that have
Intensity can fix support thermocouple and acoustic receiver device, and the wire that current signal can be transferred to outside casing.
8. it is used for the means for correcting of thermocouple temperature measurement in blast furnace according to right 1, it is characterised in that:Solid filler is charcoal
The small block refractory material of brick, block inserts is in the same size, and composition is uniform.
9. it is used for the means for correcting of thermocouple temperature measurement in blast furnace according to right 1, it is characterised in that:Casing is 400 × 200
× 200mm casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710118242.4A CN107058660A (en) | 2017-03-01 | 2017-03-01 | Means for correcting for thermocouple temperature measurement in blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710118242.4A CN107058660A (en) | 2017-03-01 | 2017-03-01 | Means for correcting for thermocouple temperature measurement in blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107058660A true CN107058660A (en) | 2017-08-18 |
Family
ID=59622303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710118242.4A Pending CN107058660A (en) | 2017-03-01 | 2017-03-01 | Means for correcting for thermocouple temperature measurement in blast furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990916A (en) * | 2017-12-29 | 2019-07-09 | 国电科学技术研究院有限公司 | A kind of measurement method and system of fire box temperature |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201762353U (en) * | 2010-09-02 | 2011-03-16 | 首钢京唐钢铁联合有限责任公司 | Blast Furnace Throat Gas Temperature Field Measuring Device |
| CN105624354A (en) * | 2016-04-06 | 2016-06-01 | 安徽工业大学 | Mounting method of blast furnace hearth bottom temperature thermocouple |
| CN206580849U (en) * | 2017-03-01 | 2017-10-24 | 武汉科技大学 | Means for correcting for thermocouple temperature measurement in blast furnace |
-
2017
- 2017-03-01 CN CN201710118242.4A patent/CN107058660A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201762353U (en) * | 2010-09-02 | 2011-03-16 | 首钢京唐钢铁联合有限责任公司 | Blast Furnace Throat Gas Temperature Field Measuring Device |
| CN105624354A (en) * | 2016-04-06 | 2016-06-01 | 安徽工业大学 | Mounting method of blast furnace hearth bottom temperature thermocouple |
| CN206580849U (en) * | 2017-03-01 | 2017-10-24 | 武汉科技大学 | Means for correcting for thermocouple temperature measurement in blast furnace |
Non-Patent Citations (1)
| Title |
|---|
| 上海市物理学会声学工作委员会: "《超声在工业上的应用 第3辑》", 30 June 1963, 上海市科学技术编译馆 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990916A (en) * | 2017-12-29 | 2019-07-09 | 国电科学技术研究院有限公司 | A kind of measurement method and system of fire box temperature |
| CN109990916B (en) * | 2017-12-29 | 2020-11-10 | 国电科学技术研究院有限公司 | Method and system for measuring temperature of hearth |
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Application publication date: 20170818 |