CN1155657A - Optic temperature sensor with permeable speculum - Google Patents
Optic temperature sensor with permeable speculum Download PDFInfo
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- CN1155657A CN1155657A CN 96102621 CN96102621A CN1155657A CN 1155657 A CN1155657 A CN 1155657A CN 96102621 CN96102621 CN 96102621 CN 96102621 A CN96102621 A CN 96102621A CN 1155657 A CN1155657 A CN 1155657A
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- graphite
- sighting tube
- flash ranging
- temperature sensor
- chamber
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Abstract
A temperature sensor for measuring temperature in graphitized electric oven comprises sighting tube with sight hole structure, shell connected to sighting tube and containing optical system, and cooler outside the shell. It features that the sight hole of sighting tube made of graphite is fixed to inner hole of shell to form an optical measuring cavity which only has an aerating hole for filling pure gas in it. The gas in cavity is exhausted through capillaries of graphite of sight hole itself. Optical fibre forcollecting and sending optical signals is attached to terminal of optical measuring cavity.
Description
The present invention relates to the temperature survey field, a kind of thermometric sensor of graphitizing electric furnace furnace temperature that is applicable to particularly is provided.
High temperature measurement more than 1600 ℃ generally adopts radiation thermometer, and as leucoscope, total radiation thermometer, two-color thermometer etc., this quasi-instrument are that the principle of utilizing the radiation intensity of heating object to increase along with the rising of temperature is made.The conventional instrument that utilizes the ripe noncontact method of this class technique known to measure high temperature can solve general high temperature measurement problem in the commercial production.And measure for the graphitizing electric furnace furnace high-temperature of work under bad environment, the use of above-mentioned radiation thermometer is restricted.As the outside intermediate absorption medium of inner flue gas of the stove and stove, smog, dust, CO, CO
2Water vapour etc. all can the adversely effecting temp meter the optical system operate as normal, the high-intensity magnetic field of working site disturbs in addition, the selection of measuring distance all can influence the authenticity of measurement result, causes big measuring error.This shows with the pyrometer that has optical system in the known technology will produce big measuring error to the graphitizing electric furnace temperature survey, this class measuring instrument generally can not on-line continuous be measured in addition.Grasp according to the inventor, still find no the temperature sensor that is suitable for graphitizing process graphite furnace temperature measurement on-line monitoring at present.
The object of the invention is to provide a kind of optic temperature sensor that is used for graphitizing electric furnace measurement of furnace temperature band permeable speculum, defective at above-mentioned known technology existence, take the relevant art means, eliminate rugged surroundings to the influence of optical system to improve the measuring accuracy of radiation thermometer, further purpose is to realize online continuous temperature measurement.
The technical scheme that adopts that achieves the above object is: the optic temperature sensor of this band permeable speculum, comprise sighting tube with peep-hole structure and be connected with it, in establish the housing of optical system, outside is provided with refrigeratory, it is characterized in that: this sighting tube is the graphite sighting tube; Graphite sighting tube and the housing back that is connected is docked by the peep-hole of graphite sighting tube and housing endoporus and has been formed the flash ranging chamber that is isolated from the outside, be closed on the structure; The flash ranging chamber only is provided with the air-filled pore that is used in the flash ranging chamber injecting clean gas in shell position, and the pore infiltration type exhaust outside the chamber that is had with the graphite material of graphite sighting tube itself, so that the optical element in the flash ranging chamber is worked in pure gas; Flash ranging chamber terminal is provided with and is used to collect and to the light transmitting fiber of extraneous transmitting optical signal.
The optic temperature sensor that technique scheme provides and even than the known technology radiation thermometer following advantage is arranged with the optical pyrometric instrument that it is made.1, adopts the sighting tube structure, will pop one's head in and insert in the graphitizing electric furnace stove, shortened the optical radiation measurement distance greatly, can reduce the influence of environment (flue gas, dust etc.) the optical system operate as normal; 2, structurally form the flash ranging chamber, the optical system of sensor is worked in closed flash ranging chamber, further solved problem of environmental pollution; 3, in order thoroughly to solve external environment the optical radiation temperature is surveyed the problem that the result exerts an influence, take in the flash ranging chamber, to inject artificially the technological means of clean gas, initiatively purify flash ranging chamber working environment, the assurance optical element is worked in being full of the chamber of clean gas; 4, this programme most important character is that sighting tube has adopted the graphite material making, and the gas circuit in flash ranging chamber only established an air-filled pore, and vent port has then utilized graphite material itself to have the characteristic of pore, by the graphite sighting tube to the flash ranging chamber with the exosmosis exhaust; Because the slow clean gas injection rate IR of can saving on the one hand of its exhaust velocity of infiltration type exhaust is surveyed cost to reduce temperature, can make on the other hand in the flash ranging chamber flash ranging environmental facies to constant to propose the accuracy of high temperature side; 5, flash ranging chamber terminal is provided with light transmitting fiber, with the reflection stove that it is gathered in the optical radiation signal of temperature outwards transmit, can reduce the luminous energy consumption in the signals transmission on the one hand, remote (away from the graphite furnace scene) transmission can be realized on the other hand, of the interference of the strong magnetic of graphite electric furnace can be avoided thermometer; 6, by adopting graphite sighting tube, the sealing of flash ranging chamber and inflation, infiltration exhaust, and the applied in any combination of means such as Optical Fiber Transmission, this programme can be realized online continuous temperature measurement, for graphitizing process automatically control lay a good foundation.
Accompanying drawing has provided the organigram of the optic temperature sensor of this band permeable speculum.
The embodiment that provides below in conjunction with accompanying drawing further describes.By accompanying drawing as seen, present embodiment includes graphite sighting tube (1) and the housing (2) with peep-hole structure, two members are connected by link (3) butt joint, wherein link (3) is connected on the graphite sighting tube (1) by pin (4), be welded with connecting screw rod (5) on the link (3), utilize the flange configuration of housing (2) and housing (2) and graphite sighting tube (1) are removably fixed with by nut (6), establish the flash ranging chamber (I) of optical system in having formed by the endoporus butt joint of the peep-hole of graphite sighting tube (1) and housing (2) behind the two members butt joints disjunctor, optical system in this example in flash ranging chamber (I) comprises the smallcolumn diaphragm (7) that is connected in successively in the housing (2), condenser (8), and light transmitting fiber (9), wherein light transmitting fiber (9) is fixed on flash ranging chamber (I) terminal by fiber bench (10) and plug (11), wherein the so-called optical system can adopt multiple version, as curved surface and light transmitting fiber (9) that the peep-hole blind hole inner face that utilizes graphite sighting tube (1) has an optically focused performance can constitute the simplest optical system, states because of this part is that the known technology category is no longer superfluous.Housing (2) outside also is provided with refrigeratory (12), and refrigeratory in this example (12) can adopt water cycle refrigeratory scheme, so refrigeratory (12) is provided with water inlet (13) and water delivering orifice (14).By accompanying drawing as seen, said flash ranging chamber (I) only is provided with the air-filled pore (15) that is used for injecting clean gas in the chamber on housing (2) position.The outside surface that sequence number 16 is illustrated in black sighting tube (1) in the accompanying drawing also is coated with and is coated with oxidation resistant coating (as aluminium oxide etc.), and this coating is in spying on the body outside the graphite furnace in the time of should being coated in work, and sequence number 17 expressions contain the temperature measuring set (table) of electrooptical device.
When using the testing of this sensor; need an open-work is opened in the graphitizing electric furnace furnace wall; graphite sighting tube (1) is embedded in this open-work; and sensor is fixed on the furnace wall; refrigeratory (12) feedwater work is with the protection sensor; in flash ranging chamber (I), inject clean gas by air-filled pore (15); clean gas can be selected as inert gases such as argon gas; and make the interior working pressure in flash ranging chamber (I) be slightly larger than the graphite furnace furnace pressure preventing that inner flue gas of the stove from passing through graphite sighting tube (1) and pouring in down a chimney in the flash ranging chamber (I), but gas circuit setting pressure table monitoring when injecting clean gas.Along with variation of temperature in the graphite furnace stove graphite sighting tube (1) temperature of inserting in the stove is changed synchronously during work and make that light radiation intensity is corresponding in the flash ranging chamber of graphite sighting tube (1) changes, the light radiation intensity that optical element in the flash ranging chamber (I) random variation is transferred to the temperature measuring set (17) that contains electrooptical device by light transmitting fiber (9), after light signal is converted to corresponding electric signal, finally demonstrating the temperature indicating value through handling.Can require to select to make the different graphite material of graphite sighting tube (1) according to the difference of graphitizing process, the gas permeability of general plain edition graphite material is 0.225 milliliters/second in parallel direction, is 0.118 milliliters/second in vertical direction; And the gas permeability of level of confidentiality type graphite material is 0.153 milliliters/second, vertical direction 0.083 milliliters/second in parallel direction.
Claims (4)
1, a kind of optic temperature sensor with permeable speculum, comprise sighting tube with peep-hole structure and be connected with it, in establish the housing of optical system, outside is provided with refrigeratory, it is characterized in that: this sighting tube is the graphite sighting tube; Graphite sighting tube and the housing back that is connected is docked by the peep-hole of graphite sighting tube and housing endoporus and has been formed the flash ranging chamber that is isolated from the outside, be closed on the structure; The flash ranging chamber only is provided with the air-filled pore that is used in the flash ranging chamber injecting clean gas in shell position, and the pore infiltration type exhaust outside the chamber that is had with the graphite material of graphite sighting tube itself, so that the optical element in the flash ranging chamber is worked in pure gas; Flash ranging chamber terminal is provided with and is used to collect and to the light transmitting fiber of extraneous transmitting optical signal.
2,, it is characterized in that the peep-hole blind hole inner face of said graphite sighting tube can be made into the curved surface with optically focused performance according to the optic temperature sensor of the described band permeable speculum of claim 1.
3, according to the optic temperature sensor of the described band permeable speculum of claim 1, it is characterized in that said optical system can make, comprise that the light that is fixed in the housing blocks, condenser and place the light transmitting fiber of condenser image distance position.
According to the optic temperature sensor of the described band permeable speculum of claim 1, it is characterized in that 4, said graphite sighting tube is in part outside the graphite body of heater near shell ends and work time the outside surface scribbles oxidation resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96102621 CN1047440C (en) | 1996-01-25 | 1996-01-25 | Optic temperature sensor with permeable speculum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96102621 CN1047440C (en) | 1996-01-25 | 1996-01-25 | Optic temperature sensor with permeable speculum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1155657A true CN1155657A (en) | 1997-07-30 |
| CN1047440C CN1047440C (en) | 1999-12-15 |
Family
ID=5117641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96102621 Expired - Fee Related CN1047440C (en) | 1996-01-25 | 1996-01-25 | Optic temperature sensor with permeable speculum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1047440C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411704A (en) * | 2013-07-11 | 2013-11-27 | 青岛新力通工业有限责任公司 | Temperature measuring device of metal material high temperature mechanical testing machine |
| CN104713830A (en) * | 2015-03-16 | 2015-06-17 | 北京大学 | Analytical device of online aerosol carbon component acquisition analyzer |
| CN110662945A (en) * | 2017-05-22 | 2020-01-07 | 西门子股份公司 | Measuring probe |
| CN112798136A (en) * | 2020-12-29 | 2021-05-14 | 中国航天空气动力技术研究院 | Window device for measuring temperature of inner surface of turbulent flow guide pipe of electric arc wind tunnel |
-
1996
- 1996-01-25 CN CN 96102621 patent/CN1047440C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411704A (en) * | 2013-07-11 | 2013-11-27 | 青岛新力通工业有限责任公司 | Temperature measuring device of metal material high temperature mechanical testing machine |
| CN103411704B (en) * | 2013-07-11 | 2016-02-10 | 青岛新力通工业有限责任公司 | The temperature measuring equipment of Metal Materials At High Temperature mechanics machine |
| CN104713830A (en) * | 2015-03-16 | 2015-06-17 | 北京大学 | Analytical device of online aerosol carbon component acquisition analyzer |
| CN110662945A (en) * | 2017-05-22 | 2020-01-07 | 西门子股份公司 | Measuring probe |
| CN112798136A (en) * | 2020-12-29 | 2021-05-14 | 中国航天空气动力技术研究院 | Window device for measuring temperature of inner surface of turbulent flow guide pipe of electric arc wind tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1047440C (en) | 1999-12-15 |
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