CN104535224B - A kind of pyrometer couple assay furnace calandria - Google Patents
A kind of pyrometer couple assay furnace calandria Download PDFInfo
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- CN104535224B CN104535224B CN201510036692.XA CN201510036692A CN104535224B CN 104535224 B CN104535224 B CN 104535224B CN 201510036692 A CN201510036692 A CN 201510036692A CN 104535224 B CN104535224 B CN 104535224B
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Abstract
The present invention relates to a kind of pyrometer couple assay furnace calandria, belong to pyrometer couple calibrating or calibration field.Calandria material is graphite of the purity higher than 99.99%；It includes：Graphite heating pipe (1), graphite buffering ring (2), graphite electrode set (3) and red copper electrode (4).The two ends of graphite heating pipe (1) connect 1 graphite buffering ring (2) respectively, 2 graphite electrode sets (3) are covered respectively on graphite buffering ring (2), and 2 graphite electrode sets (3) are separately mounted on the red copper electrode (4) of both sides.The advantage of calandria proposed by the present invention is：With graphite as material, graphite heating pipe temperature can reach 3000 DEG C, produce the thermal field of stable and uniform, meet the calibrating or calibration of the pyrometer couples such as (1600 DEG C~3000 DEG C) Wolfram rhenium heat electric couple, iridium rhodium thermocouple, platinum rhodium thermocouple, the calandria can measure the temperature of pyrometer couple thermometric end by standard photoelectric pyrometer simultaneously, improve the precision of pyrometer couple calibrating or calibration.
Description
Technical field
The present invention relates to a kind of pyrometer couple assay furnace calandria, belong to pyrometer couple calibrating or calibration field.
Background technology
At present, pyrometer couple assay furnace is used for the calibrating or calibration of thermocouple, and calandria is whole electric thermo-couple test furnace
The key of design.The calandria of electric thermo-couple test furnace typically has resistance wire or silicon molybdenum composite material.Resistance wire is general with winding side
Formula is wound on earthenware, and resistance wire heating reaches the purpose of heating after being powered to resistance wire, and uniform temperature is formed in the middle of earthenware
.The temperature of the different heating according to heating wire material is different, 1200 DEG C of nickel filament heating upper limit, platinum-rhodium wire heating-up temperature
1600 DEG C of the upper limit；Silicon molybdenum composite material is processed into U-shaped rod, and one group (general 8~10) U-shaped rod is spaced, then uses wire string
Connection, reaches heating purpose after energization, uniform temperature field is formed in U-shaped region.General silicon molybdenum composite material heating upper limit
1600℃.Heatproof is limited in itself due to material for both the above electric thermo-couple test furnace calandria, therefore cannot be used for high temperature (1600
DEG C~3000 DEG C) heating of electric thermo-couple test furnace.It is presently used for more than 1600 DEG C and reaches 3000 DEG C of heater material only having
Graphite, using more in radiation thermometer assay furnace.Graphite heating body in radiation thermometer assay furnace has rod type and ring-like.
Rod calandria be by one group of (general 6~8) graphite rod uniformly circumferentially, and use wired in series, heating is reached after energization
Purpose, and produce uniform temperature field；Annular-heating body is to be superimposed one group of (general 15~20) graphite annulus, and electric current is passed sequentially through often
Individual graphite annulus reaches heating purpose, and produces uniform temperature field.But, radiation thermometer assay furnace is low to thermal field requirement, therefore on
The thermal field index that the two kinds of graphite heating bodies in face are produced does not reach the requirement of thermocouple calibration, and this in two graphite heating body set
Meter part is more, installs inconvenient.In addition, annular-heating body is fragile due to itself thermal expansion.In view of above calandria is not
Foot is, it is necessary to design a kind of more preferable pyrometer couple assay furnace calandria.
The present invention proposes a kind of pyrometer couple assay furnace calandria, stone of the calandria using purity higher than 99.99%
Ink processing, calandria two end electrodes are processed using red copper, and calandria is designed to tubulose, uniform and stable thermal field are produced, in order to subtract
Small energy consumption, heating tube pipe thickness has carried out stage design, and in order to reduce the damage that thermal expansion causes, heating tube two ends increased
Buffering ring.
The content of the invention
It is not enough present on existing electric thermo-couple test furnace calandria design the invention aims to solve, propose one
Plant pyrometer couple assay furnace calandria.
The purpose of the present invention is achieved through the following technical solutions.
A kind of pyrometer couple assay furnace calandria of the invention, is fixed on the inwall of pyrometer couple assay furnace,
And be connected with the temperature control system of pyrometer couple assay furnace；It is characterized in that：The material of the calandria is higher than for purity
99.99% graphite；The calandria includes：Graphite heating pipe (1), graphite buffering ring (2), graphite electrode set (3) and red copper
Electrode (4).
The two ends of graphite heating pipe (1) connect 1 graphite buffering ring (2) respectively, and 2 graphite electrode set (3) sets exist respectively
On graphite buffering ring (2), 2 graphite electrode sets (3) are separately mounted on the red copper electrode (4) of both sides.
Graphite heating pipe (1) is electric heating body, is that pyrometer couple calibrating or calibration provide uniform and stable thermal field.Graphite
Heating tube (1) is the uniform hollow tube of internal diameter, and the two ends section wall thickness of graphite heating pipe (1) is more than interlude wall thickness, purpose
It is to make graphite heating pipe (1) two ends energy consumption less than centre, the temperature of generation is relatively low.The two ends of graphite heating pipe (1) are designed with outer
Screw thread.In order to read the normal temperature in graphite heating pipe (1) with standard photoelectric pyrometer, opened in the middle of graphite heating pipe (1)
One radiation temperature measurement hole (5).
The outer wall of graphite buffering ring (2) is designed to conical surface, it is therefore an objective to reduces graphite heating pipe (1) thermal expansion and causes stone
Black heating tube (1) damage of itself；One end indoor design of graphite buffering ring (2) wall thickness has screw thread, for graphite heating pipe
(1) connect；The thin one end outer wall of graphite buffering ring (2) wall prolong it is axially symmetric open two seams, graphite buffering ring (2) taper end is prolonged footpath
To with certain elasticity, it is to avoid graphite buffering ring (2) is damaged because expanded by heating is extruded.The outer wall polishing of graphite buffering ring (2)
It is smooth, both reduced graphite buffering ring (2) moving resistance, ensure that it is contacted closely with graphite electrode set (3) again.
The inwall of graphite electrode set (3) is designed to conical surface, while one end inwall being connected with graphite buffering ring (2) sets
In respect of screw thread, for being connected by screw thread with graphite buffering ring (2).The inwall of graphite electrode set (3) is polished smooth, and is both subtracted
Small graphite buffering ring (2) moving resistance, ensures to be contacted closely with graphite buffering ring (2) again.Graphite electrode set (3) and red copper electrode
(4) it is threadably secured connection.
There is the coaxial circular aperture with graphite heating pipe (1) on red copper electrode (4).Red copper electrode (4) is fixed on pyrometer couple
On the inwall of assay furnace, and it is connected with the temperature control system of pyrometer couple assay furnace by copper conductor.Pyrometer couple is examined
The temperature control system for determining stove is graphite heating pipe (1) by red copper electrode (4), graphite electrode set (3) and graphite buffering ring (2)
Power-up.
The application method of the pyrometer couple assay furnace calandria is：
Step 1：The pyrometer couple assay furnace calandria is fixed on the inwall of pyrometer couple assay furnace, and
By copper conductor, red copper electrode (4) is connected with the temperature control system of pyrometer couple assay furnace.
Step 2：The temperature control system of pyrometer couple assay furnace passes through red copper electrode (4), graphite electrode set (3) and stone
Black buffering ring (2) powers up for graphite heating pipe (1).
Step 3：Heat is produced when electric current is by graphite heating pipe (1), makes to reach specified control inside graphite heating pipe (1)
Temperature, and make the internal thermal field of graphite heating pipe (1) uniform and stable by control.
The specified control temperature is in the range of 1600 DEG C to 3000 DEG C.
Step 4：By pyrometer couple from pyrometer couple assay furnace outside, through pyrometer couple assay furnace, from described
One end of pyrometer couple assay furnace calandria is inserted into graphite heating pipe (1), the thermometric end of pyrometer couple is located at stone
The centre position of black heating tube (1).
The pyrometer couple includes Wolfram rhenium heat electric couple, iridium rhodium thermocouple and platinum rhodium thermocouple.
Step 5：By standard photoelectric pyrometer from pyrometer couple assay furnace outside, through pyrometer couple assay furnace, insert
Enter the radiation temperature measurement hole (5) to graphite heating pipe (1), the temperature of pyrometer couple thermometric end is measured, by comparison method to high temperature
Thermocouple is examined and determine or calibrated.
Beneficial effect
Pyrometer couple assay furnace calandria proposed by the present invention compared with existing electric thermo-couple test furnace calandria,
Have the following advantages that：With graphite as material, graphite heating pipe temperature can reach 3000 DEG C, produce the thermal field of stable and uniform, full
The calibrating or calibration of the pyrometer couples such as foot (1600 DEG C~3000 DEG C) Wolfram rhenium heat electric couple, iridium rhodium thermocouple, platinum rhodium thermocouple, together
When the calandria temperature of pyrometer couple thermometric end can be measured by standard photoelectric pyrometer, improve pyrometer couple calibrating or
The precision of calibration.
Brief description of the drawings
Fig. 1 is the structural representation of specific embodiment of the invention high temperature electric thermo-couple test furnace calandria；
Wherein, 1- graphite heatings pipe, 2- graphite buffering ring, 3- graphite electrodes set, 4- red coppers electrode, 5- radiation temperature measurements hole.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Pyrometer couple assay furnace calandria in the present embodiment, its material is graphite of the purity higher than 99.99%；Its
Structure as shown in figure 1, including：Graphite heating pipe 1, graphite buffering ring 2, graphite electrode cover 3 and red copper electrode 4.
It is slow in graphite respectively that the two ends of graphite heating pipe 1 connect 1 graphite buffering ring, 2,23 sets of graphite electrodes sets respectively
Rush on ring 2,2 graphite electrode sets 3 are separately mounted on the red copper electrode 4 of both sides.
Graphite heating pipe 1 is electric heating body, is that pyrometer couple calibrating or calibration provide uniform and stable thermal field.Graphite adds
Heat pipe 1 is the uniform hollow tube of internal diameter, and the two ends section wall thickness of graphite heating pipe 1 is more than interlude wall thickness, it is therefore an objective to make stone
The two ends energy consumption of black heating tube 1 is less than centre, and the temperature of generation is relatively low.The two ends of graphite heating pipe 1 are designed with external screw thread.In order to
Standard photoelectric pyrometer reads the normal temperature in graphite heating pipe 1, and a radiation temperature measurement hole 5 is opened in the middle of graphite heating pipe 1.
The outer wall of graphite buffering ring 2 is designed to conical surface, it is therefore an objective to reduces the thermal expansion of graphite heating pipe 1 and causes graphite to add
Heat pipe 1 damage of itself；One end indoor design of the wall thickness of graphite buffering ring 2 has screw thread, for being connected with graphite heating pipe 1；Stone
The thin one end outer wall of the wall of black buffering ring 2 prolong it is axially symmetric open two seams, make the taper end of graphite buffering ring 2 prolong radially have certain bullet
Property, it is to avoid graphite buffering ring 2 is damaged because expanded by heating is extruded.The outer wall of graphite buffering ring 2 is polished smooth, and has both reduced graphite buffering
The moving resistance of ring 2, ensures that it is contacted closely with graphite electrode set 3 again.
The inwall of graphite electrode set 3 is designed to conical surface, while one end inwall being connected with graphite buffering ring 2 is designed with
Screw thread, for being connected by screw thread with graphite buffering ring 2.The inwall of graphite electrode set 3 is polished smooth, and has both been reduced graphite and has been delayed
The moving resistance of ring 2 is rushed, ensures to be contacted closely with graphite buffering ring 2 again.Graphite electrode set 3 is threadably secured with red copper electrode 4
Connection.
There is the coaxial circular aperture with graphite heating pipe 1 on red copper electrode 4.Red copper electrode 4 is fixed on pyrometer couple assay furnace
Inwall on, and be connected with the temperature control system of pyrometer couple assay furnace by copper conductor.Pyrometer couple assay furnace
Temperature control system is by red copper electrode 4, graphite electrode set 3 and graphite buffering ring 2 for graphite heating pipe 1 is powered up.
The application method of the pyrometer couple assay furnace calandria is：
Step 1：The pyrometer couple assay furnace calandria is fixed on the inwall of pyrometer couple assay furnace, and
By copper conductor, red copper electrode 4 is connected with the temperature control system of pyrometer couple assay furnace.
Step 2：The temperature control system of pyrometer couple assay furnace is slow by red copper electrode 4, graphite electrode set 3 and graphite
Ring 2 is rushed for graphite heating pipe 1 is powered up.
Step 3：Heat is produced when electric current is by graphite heating pipe 1, makes to reach 1600 DEG C to 3000 inside graphite heating pipe 1
Specified control temperature in the range of DEG C, and make the thermal field inside graphite heating pipe 1 uniform and stable by control.
Step 4：By Wolfram rhenium heat electric couple from pyrometer couple assay furnace outside, through pyrometer couple assay furnace, from described
One end of pyrometer couple assay furnace calandria is inserted into graphite heating pipe 1, the thermometric end of Wolfram rhenium heat electric couple is located at graphite
The centre position of heating tube 1.
Step 5：By standard photoelectric pyrometer from pyrometer couple assay furnace outside, through pyrometer couple assay furnace, insert
Enter the radiation temperature measurement hole 5 to graphite heating pipe 1, the temperature of Wolfram rhenium heat electric couple thermometric end is measured, by comparison method to W-Re thermoelectricity
Occasionally examined and determine or calibrated.
The above is presently preferred embodiments of the present invention, and the present invention should not be limited to the embodiment and accompanying drawing institute is public
The content opened.It is every not depart from the lower equivalent or modification for completing of spirit disclosed in this invention, both fall within the model of present invention protection
Enclose.
Claims (10)
1. a kind of pyrometer couple assay furnace calandria, is fixed on the inwall of pyrometer couple assay furnace, and is warmed with height
The temperature control system connection of galvanic couple assay furnace；It is characterized in that：It includes：Graphite heating pipe (1), graphite buffering ring (2), stone
Electrode ink set (3) and red copper electrode (4)；
The two ends of graphite heating pipe (1) connect 1 graphite buffering ring (2) respectively, and 2 graphite electrode sets (3) are respectively fitted over graphite
On buffering ring (2), 2 graphite electrode sets (3) are separately mounted on the red copper electrode (4) of both sides；
Graphite heating pipe (1) is electric heating body, is that pyrometer couple calibrating or calibration provide uniform and stable thermal field；In order to use mark
Quasi-optical electric pyrometer reads the normal temperature in graphite heating pipe (1), and a radiation temperature measurement hole is opened in the middle of graphite heating pipe (1)
(5)；
The outer wall of graphite buffering ring (2) is designed to conical surface, it is therefore an objective to reduces graphite heating pipe (1) thermal expansion and causes graphite to add
Heat pipe (1) damage of itself；One end of graphite buffering ring (2) outer wall thickness is connected with graphite heating pipe (1)；Graphite buffering ring (2)
Outer wall polish smooth, both reduced graphite buffering ring (2) moving resistance, ensure that it is contacted closely with graphite electrode set (3) again；
The inwall of graphite electrode set (3) is designed to conical surface；The inwall of graphite electrode set (3) is polished smooth, and both reduces graphite
Buffering ring (2) moving resistance, ensures to be contacted closely with graphite buffering ring (2) again；
There is the coaxial circular aperture with graphite heating pipe (1) on red copper electrode (4)；Red copper electrode (4) is fixed on pyrometer couple calibrating
On the inwall of stove, and it is connected with the temperature control system of pyrometer couple assay furnace by copper conductor；Pyrometer couple assay furnace
Temperature control system by red copper electrode (4), graphite electrode set (3) and graphite buffering ring (2) for graphite heating pipe (1) add
Electricity.
2. a kind of pyrometer couple assay furnace calandria as claimed in claim 1, it is characterised in that：Its material is that purity is high
In 99.99% graphite.
3. a kind of pyrometer couple assay furnace calandria as claimed in claim 1 or 2, it is characterised in that：The graphite adds
Heat pipe (1) is the uniform hollow tube of internal diameter, and the two ends section wall thickness of graphite heating pipe (1) is more than interlude wall thickness, it is therefore an objective to
Make graphite heating pipe (1) two ends energy consumption less than centre, the temperature of generation is relatively low.
4. a kind of pyrometer couple assay furnace calandria as claimed in claim 1 or 2, it is characterised in that：The graphite adds
The two ends of heat pipe (1) are designed with external screw thread；One end indoor design of graphite buffering ring (2) outer wall thickness has screw thread, for graphite
Heating tube (1) is connected.
5. a kind of pyrometer couple assay furnace calandria as claimed in claim 1 or 2, it is characterised in that：The graphite delays
Rush the thin one end outer wall of ring (2) outer wall prolong it is axially symmetric open two seams, make graphite buffering ring (2) taper end prolong radially have it is certain
Elasticity, it is to avoid graphite buffering ring (2) is damaged because expanded by heating is extruded.
6. a kind of pyrometer couple assay furnace calandria as claimed in claim 1 or 2, it is characterised in that：Graphite electrode set
(3) one end inwall being connected with graphite buffering ring (2) is designed with screw thread, connects for being coordinated by screw thread with graphite buffering ring (2)
Connect.
7. a kind of pyrometer couple assay furnace calandria as claimed in claim 1 or 2, it is characterised in that：Graphite electrode set
(3) it is threadably secured with red copper electrode (4) and is connected.
8. a kind of pyrometer couple assay furnace calandria as claimed in claim 1 or 2, it is characterised in that：Its application method
For：
Step 1：The pyrometer couple assay furnace calandria is fixed on the inwall of pyrometer couple assay furnace, and is passed through
Copper conductor, red copper electrode (4) is connected with the temperature control system of pyrometer couple assay furnace；
Step 2：The temperature control system of pyrometer couple assay furnace is slow by red copper electrode (4), graphite electrode set (3) and graphite
Ring (2) is rushed for graphite heating pipe (1) is powered up；
Step 3：Heat is produced when electric current is by graphite heating pipe (1), makes to reach specified control temperature inside graphite heating pipe (1)
Degree, and make the internal thermal field of graphite heating pipe (1) uniform and stable by control；
Step 4：By pyrometer couple from pyrometer couple assay furnace outside, through pyrometer couple assay furnace, from the high temperature
One end of electric thermo-couple test furnace calandria is inserted into graphite heating pipe (1), the thermometric end of pyrometer couple is added positioned at graphite
The centre position of heat pipe (1)；
Step 5：By standard photoelectric pyrometer from pyrometer couple assay furnace outside, through pyrometer couple assay furnace, it is inserted into
The radiation temperature measurement hole (5) of graphite heating pipe (1), measures the temperature of pyrometer couple thermometric end, by comparison method to high temperature thermoelectric
Occasionally examined and determine or calibrated.
9. a kind of pyrometer couple assay furnace calandria as claimed in claim 8, it is characterised in that：The specified control temperature
Degree is in the range of 1600 DEG C to 3000 DEG C.
10. a kind of pyrometer couple assay furnace calandria as claimed in claim 8, it is characterised in that：The high temperature thermoelectric
It is even to include Wolfram rhenium heat electric couple, iridium rhodium thermocouple and platinum rhodium thermocouple.
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| CN201510036692.XA CN104535224B (en) | 2015-01-26 | 2015-01-26 | A kind of pyrometer couple assay furnace calandria |
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| CN201510036692.XA CN104535224B (en) | 2015-01-26 | 2015-01-26 | A kind of pyrometer couple assay furnace calandria |
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| CN104535224B true CN104535224B (en) | 2017-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2720819C1 (en) * | 2019-12-30 | 2020-05-13 | Общество с ограниченной ответственностью «Обнинская термоэлектрическая компания» | Device for calibration of high-temperature thermocouples |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606259B (en) * | 2015-12-10 | 2018-03-02 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of high temperature assay furnace copper electrode |
| CN105509921B (en) * | 2016-01-13 | 2019-06-07 | 洛阳量千度超高温传感器有限公司 | Using metal or alloy as the temperature sensor of temperature-sensing probe and production and school temperature method |
| CN105758543B (en) * | 2016-04-21 | 2019-07-26 | 洛阳量千度超高温传感器有限公司 | A kind of refractory metal or alloy thermocouple and its production and temperature correction method |
| CN110763371B (en) * | 2019-11-14 | 2021-06-08 | 中国计量科学研究院 | Dry body stove based on heat pipe fixed point |
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| GB2499175B8 (en) * | 2010-12-06 | 2017-10-04 | Colburn Michael | System for verifying temperature measurement |
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| SU1700394A1 (en) * | 1988-11-14 | 1991-12-23 | Московский институт стали и сплавов | Temperature sensor with a built-in calibrator |
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