CN201258340Y - Blast furnace hot blast stove crown hot blast temperature measurement apparatus - Google Patents
Blast furnace hot blast stove crown hot blast temperature measurement apparatus Download PDFInfo
- Publication number
- CN201258340Y CN201258340Y CNU2008201904963U CN200820190496U CN201258340Y CN 201258340 Y CN201258340 Y CN 201258340Y CN U2008201904963 U CNU2008201904963 U CN U2008201904963U CN 200820190496 U CN200820190496 U CN 200820190496U CN 201258340 Y CN201258340 Y CN 201258340Y
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- hot blast
- temperature measuring
- temperature
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- optical fiber
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Abstract
The utility model relates to the design and the manufacture of a radiation temperature measuring instrument for measuring the temperature of heated air of a blast furnace hot blast stove, and provides a temperature measuring device for the heated air of the arch top of the blast furnace hot blast stove. A hemispherical reflector is installed in the casing of a temperature measuring head, the hemispherical reflector is fastened over a protective sighting tube, a focus lens is installed at the top of the hemispherical reflector through a sleeve seat, the end surface of one end of optical fiber is installed in the focus position of the focus lens through the sleeve seat, and the end surface of other end is coupled with a photoelectric sensor through a mechanically chopped wave modulating disk; the electrical signal output by the photoelectric sensor is calculated by a preamplifier and a single-chip processing system, and the corresponding analog quantity or digital quantity of the temperature is output. The device has the advantages of stability, reliability and long service life.
Description
Technical field
The utility model relates to a kind of design and manufacturing of measuring the radiation temperature measurement instrument of blast funnace hot blast stove hot blast temperature.
Background technology
The correct measurement of position hot blast temperatures such as blast funnace hot blast stove vault has very important meaning for control and raising wind-warm syndrome, the blast furnace energy consumption that reduces, optimization blast furnace smelting process.The blast funnace hot blast stove environment is abominable, and the measurement of hot blast temperature not only will solve the High Temperature High Pressure problem of measured target, also will adapt to the requirement of environmental change throughout the year.At present, be used for the instrument that the blast funnace hot blast stove hot blast temperature measures and mainly contain three kinds.First kind is thermocouple temperature measurement, and it directly inserts thermopair and protective casing thereof and measures hot blast temperature in the stove, belongs to contact thermography, is the most widely used at present metering system.Its advantage is can continuous temperature measurement, precision is higher; shortcoming is because the interior temperature, pressure of stove fluctuates up and down; thermopair and protective casing thereof can produce the temperature vibration phenomenon; thermopair is that easily-consumed products, damage are more frequent; thermopair must be changed under the damping down state; therefore the maintenance operation cost is higher, and the consistence of thermopair itself is poor in addition, the consistence of measured temperature before and after also influence is changed.Second kind is at the deficiency of thermocouple temperature measurement and the photoelectricity radiation temperature measurer that occurs; it is that the photoelectric probe that will protector be housed is fixedly mounted on the blast funnace hot blast stove vault and inserted on the position of thermopair originally; probe can be aimed at hotblast stove inside and measure hot blast temperature by the window and the thermocouple jack of sealing.The probe of this instrument does not contact high-temperature targets, belongs to non-contact temperature measuring.Its advantage is can continuous temperature measurement, the consistence of stability, measurement and all having significantly than thermocouple temperature measurement work-ing life improves, and can reduce the consumption of thermopair, reduces the operation expense of instrument.It is that electronic unit in the photo-sensor still is among the severe environment such as high-temperature dust that its shortcoming is mounted in on-the-spot probe, works better for a long time, and shorten work-ing life greatly.The third is not enough at the photoelectricity radiation thermometric and optical fiber photoelectricity radiation temperature measurer that occur.This instrument will be expressed the optical signal of certain temperature and deliver to photo-sensor away from abominable scene by passing light optical fiber, and photo-sensor is worked in the environment preferably at one, thus the long-term works better of realization instrument.But, because technology passes light optical fiber and adopts multiply optical fiber and length to be no more than 10 meters usually.So photo-sensor still can not seriously restrict its work-ing life under severe environment such as blast funnace hot blast stove vault away from abominable site environment in practice.
The utility model content
Technical problem to be solved in the utility model provides a kind of blast funnace hot blast stove vault hot blast temperature measuring apparatus, can accurately measure hot blast temperature, has characteristics stable, reliable, long service life.
For solving the problems of the technologies described above; the utility model proposes following technical scheme: a kind of blast funnace hot blast stove vault hot blast temperature measuring apparatus; the protection sighting tube inserts in the hotblast stove; connect by coaxial flange with the thermometric head capsule; one end end face of optical fiber is positioned at the thermometric head capsule; the other end connects photo-sensor; photo-sensor connects scm managing system by cable; scm managing system connects digital-to-analog conversion and output circuit; it is characterized in that: dress hemispherical reflector in the temperature measuring head shell; described reflection hemisphere device is buckled in the top of protection sighting tube; focusing objective len is installed in the top of described hemispherical reflector by receiver; one end end face of optical fiber is installed in the focal length place of focusing objective len by receiver; the other end end face is by mechanical chopping modulation dish and photo-sensor coupling; the electrical signal of photo-sensor output is exported and temperature corresponding simulating amount or digital quantity by prime amplifier and scm managing system computing.
As optimized technical scheme, described optical fiber is single core silica fibre.
Further with improvement, described scm managing system is also exported 4 ~ 20mA standard industry electrical signal.
The blast funnace hot blast stove vault hot blast temperature measuring apparatus that the utility model provides, can grow Distance Transmission and express the optical signal of certain temperature, photo-sensor installing away from abominable on-the-spot place, is realized the continuously measured of hot blast temperature and guaranteed thermometric consistence and accuracy.It has characteristics stable, reliable, long service life, reduces thermopair consumption, significantly reduces instrument running cost and maintenance workload, reaches to replace thermopair fully, finishes the purpose of measuring the blast funnace hot blast stove hot blast temperature.
Description of drawings
Fig. 1 is the structural representation of the utility model blast funnace hot blast stove vault hot blast temperature measuring apparatus.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.
As shown in Figure 1; the protection sighting tube 7 of collecting thermal radiation light inserts in the hotblast stove 9; surface finish and gold-plated reflection hemisphere device 5 are buckled in the top of protection sighting tube 7; focusing objective len 4 is installed in the top of described hemispherical reflector 5 by receiver 3; one end end face of optical fiber 1 is installed in the focal length place of focusing objective len 4 by receiver 3; its the other end end face is by mechanical chopping modulation dish 8 and photo-sensor coupling; the electrical signal of photo-sensor output is by prime amplifier and scm managing system computing; export the digital quantity corresponding with temperature; or, so just measured blast funnace hot blast stove vault hot blast temperature by D/A change-over circuit output analog quantity.
Embodiment
Certain iron work 3200m
3Blast funnace hot blast stove vault hot blast temperature is measured; wherein protect sighting tube to produce near infrared light for the alundum tube light guide; the reflection hemisphere device that its surface finish of near infrared light process is also gold-plated and the focusing objective len at top thereof focus on the end face that passes light optical fiber, realized that the few loss of nothing of near infrared light signal is transmitted, provide assurance for using single core biography light optical fiber to carry out long-distance transmissions.Optical fiber is single core silica fibre of diameter 500 μ m, and length is 100m.The near infrared light of the other end output of single core silica fibre is by mechanical chopping modulation dish and photo-sensor coupling, obtain an alternate electrical signal, use chopper to be intended to improve the signal to noise ratio of system, and can avoid handling in the subsequent conditioning circuit difficult problem that the small-signal direct current amplifies.Electrical signal is exported and temperature corresponding simulating amount or digital quantity, and is exported 4 ~ 20mA standard signal and send registering instrument or computer to handle by prime amplifier and scm managing system computing.900 ~ 1400 ℃ of the temperature measurement range of instrument, measuring error is less than 1%.Because adopting length is single core long optical fibers of 100m, makes photo-sensor away from abominable scene, has realized the continuously measured of hot blast temperature and has guaranteed thermometric consistence and accuracy.It has characteristics stable, reliable, long service life, reduces thermopair consumption, has significantly reduced instrument running cost and maintenance workload, reaches to replace thermopair fully, finishes the purpose of measuring blast funnace hot blast stove vault hot blast temperature.
Should be noted that; the exemplary illustration that this specific embodiment is just done the utility model and do not limit its protection domain; those skilled in the art can also make the change of some unsubstantialities to the utility model; so long as the improvement of carrying out without creative work and to this patent, all within the protection domain of this patent.
Claims (3)
1; a kind of blast funnace hot blast stove vault hot blast temperature measuring apparatus; the protection sighting tube inserts in the hotblast stove; connect by coaxial flange with the thermometric head capsule; one end end face of optical fiber is positioned at the thermometric head capsule; the other end connects photo-sensor; photo-sensor connects scm managing system by cable; scm managing system connects digital-to-analog conversion and output circuit; it is characterized in that: dress hemispherical reflector in the temperature measuring head shell; described reflection hemisphere device is buckled in the top of protection sighting tube; focusing objective len is installed in the top of described hemispherical reflector by receiver; one end end face of optical fiber is installed in the focal length place of focusing objective len by receiver; the other end end face is by mechanical chopping modulation dish and photo-sensor coupling; the electrical signal of photo-sensor output is exported and temperature corresponding simulating amount or digital quantity by prime amplifier and scm managing system computing.
2, blast funnace hot blast stove vault hot blast temperature measuring apparatus according to claim 1 is characterized in that, described optical fiber is single core silica fibre.
3, blast funnace hot blast stove vault hot blast temperature measuring apparatus according to claim 1 is characterized in that described scm managing system is also exported 4 ~ 20mA standard industry electrical signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201904963U CN201258340Y (en) | 2008-08-26 | 2008-08-26 | Blast furnace hot blast stove crown hot blast temperature measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201904963U CN201258340Y (en) | 2008-08-26 | 2008-08-26 | Blast furnace hot blast stove crown hot blast temperature measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258340Y true CN201258340Y (en) | 2009-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201904963U Expired - Fee Related CN201258340Y (en) | 2008-08-26 | 2008-08-26 | Blast furnace hot blast stove crown hot blast temperature measurement apparatus |
Country Status (1)
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| CN (1) | CN201258340Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458010A (en) * | 2014-12-18 | 2015-03-25 | 马钢(集团)控股有限公司 | Front-arranged reflecting type online temperature detecting device |
| CN104439122A (en) * | 2014-12-25 | 2015-03-25 | 东华理工大学 | Combined type continuous casting blank surface temperature measurement method and instrument |
| CN105136311A (en) * | 2015-09-10 | 2015-12-09 | 马鞍山市安工大工业技术研究院有限公司 | Blast furnace hot-blast stove vault infrared optical fiber temperature detection system and method |
-
2008
- 2008-08-26 CN CNU2008201904963U patent/CN201258340Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458010A (en) * | 2014-12-18 | 2015-03-25 | 马钢(集团)控股有限公司 | Front-arranged reflecting type online temperature detecting device |
| CN104439122A (en) * | 2014-12-25 | 2015-03-25 | 东华理工大学 | Combined type continuous casting blank surface temperature measurement method and instrument |
| CN105136311A (en) * | 2015-09-10 | 2015-12-09 | 马鞍山市安工大工业技术研究院有限公司 | Blast furnace hot-blast stove vault infrared optical fiber temperature detection system and method |
| CN105136311B (en) * | 2015-09-10 | 2018-06-26 | 马鞍山市安工大工业技术研究院有限公司 | A kind of blast funnace hot blast stove vault infrared optical fiber temperature checking method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20140826 |
|
| EXPY | Termination of patent right or utility model |