CN103913257A - Fixed pipe type calibration furnace capable of correcting thermal field difference - Google Patents
Fixed pipe type calibration furnace capable of correcting thermal field difference Download PDFInfo
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- CN103913257A CN103913257A CN201410159008.2A CN201410159008A CN103913257A CN 103913257 A CN103913257 A CN 103913257A CN 201410159008 A CN201410159008 A CN 201410159008A CN 103913257 A CN103913257 A CN 103913257A
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- intubate
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- thermocouple insertion
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Abstract
The invention relates to a fixed pipe type calibration furnace capable of correcting the thermal field difference. The calibration furnace comprises a furnace body. An electric heating furnace pipe is arranged in the furnace body, and a standard thermocouple insertion pipe and a temperature control thermocouple insertion pipe are located on the central axis of the electric heating furnace pipe. Calibrated thermocouple insertion pipes surround the standard thermocouple insertion pipe and the temperature control thermocouple insertion pipe respectively. And gaps between the standard thermocouple insertion pipe, the temperature control thermocouple insertion pipe, the first calibrated thermocouple insertion pipes and the second calibrated thermocouple insertion pipes are filled with high-temperature adhesive fillings. The fixed pipe type calibration furnace has the advantages that the standard thermocouple insertion pipe and the calibrated thermocouple insertion pipe are mutually insulating, and precious metal standard thermocouples are prevented from being polluted by cheap metal stand thermocouples; the calibrated thermocouple insertion pipes are evenly distributed symmetric about the central axis of the standard thermocouple insertion pipe and have the same insertion depth, and therefore the horizontal temperature field difference is eliminated, the vertical temperature field difference value is kept constant, the influence of the traditional calibration furnace temperature field difference on calibration results is avoided, and result accuracy, reliability and repeatability and working efficiency are improved.
Description
Technical field
The present invention relates to a kind of temperature poor fixing tubular type assay furnace of revising.
Background technology
The normally used thermostatic equipment of thermocouple calibration is tube type resistance furnace, electric heating tube is equipped with at tube type resistance furnace center, when thermocouple calibration, the measuring junction of standard couple and tested thermopair need to be banded together and insert electric heating tube middle part, should not be firmly excessive when tying up, in order to avoid damage protecting tube, while inserting boiler tube, be difficult to measuring junction to be placed on boiler tube axis centre position, on the upper side or on the lower side, capital causes larger temperature field poor, and, once it is loosening or tie up the improper protection tube breakage that causes to tie up position in testing process, not only can pollute and even damage noble metal standard couple, and standard couple and tested thermocouple measurement end are probably just no longer in the same degree of depth, will increase level temperature field poor, no matter any phenomenon occurs and exists, capital causes examining and determine error in data erroneous judgement product quality.Moreover because shove charge operation randomness is very large, it is in full accord that charging mode cannot keep, all there is uncertainty in horizontal level and upright position, detects with twice shove charge of a collection of product, and data are difficult to repeat.Add that national metrological verification regulations allows tubular type furnace temperature field difference to be no more than 1.0 ℃, take one-level K type thermopair as example, 400 ℃ of following provisions are no more than 1.6 ℃, if now nearly 1.0 ℃ of temperature differential cannot be revised again, will cause considerable influence to the judgement of product.
Summary of the invention
The object of this invention is to provide a kind of temperature poor fixing tubular type assay furnace of revising, to overcome currently available technology above shortcomings.
The object of the invention is to be achieved through the following technical solutions:
A kind of temperature poor fixing tubular type assay furnace of revising, comprise body of heater, in described body of heater, center position is provided with electrical heating boiler tube, in described electrical heating boiler tube, be provided with standard couple intubate, temperature-control heat couple intubate, tested thermopair intubate one and tested thermopair intubate two, described standard couple intubate and temperature-control heat couple intubate are all positioned at described electric furnace tube hub axial location, be evenly distributed with multiple tested thermopair intubate one around described standard couple intubate, be evenly distributed with multiple tested thermopair intubate two around described temperature-control heat couple intubate, described multiple tested thermopair intubate one and described multiple tested thermopair intubate two are all positioned at the concentric circles position of described electrical heating boiler tube, the pipe diapire of described standard couple intubate and described multiple tested thermopair intubate one is identical apart from the vertical distance between center line of described electrical heating boiler tube with the pipe diapire of temperature-control heat couple intubate and described multiple tested thermopair intubate two apart from the vertical distance between center line of described electrical heating boiler tube, between described standard couple intubate, temperature-control heat couple intubate, described multiple tested thermopair intubate one and described multiple tested thermopair intubate two, be all filled with high-temperature glue inserts.
Further, between described body of heater and described electrical heating boiler tube, be filled with insulation material.
Further, in described temperature-control heat couple intubate, be inserted with temperature-control heat couple.
Further, described temperature-control heat couple is connected with temperature controller.
Further, described temperature controller is connected with executive component.
Further, described executive component is connected with described electric heating tube by two binding posts of body of heater.
Beneficial effect of the present invention is: mutually insulated between standard couple and tested thermopair intubate, can prevent that cheap metal thermopair from polluting the damage that noble metal standard couple causes or scrapping under high temperature shape; Tested thermopair intubate distributes symmetrically and evenly around standard couple intubate axis, insertion depth is identical and fixed, eliminate on the one hand level temperature field poor, keep on the other hand a vertical temperature difference immobilize and conveniently record, can in verification result, be revised, overcome the temperature poor impact on verification result that conventional tubular assay furnace shove charge position and degree of depth uncertainty cause.And calibrating operation shove charge is easy to be laborsaving, product only need be inserted into intubate top, does not exist level temperature field poor, has improved accuracy, reliability, repeatability and the work efficiency of metrology and measurement result.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the structural representation of the temperature the revised poor fixing tubular type assay furnace described in the embodiment of the present invention;
Fig. 2 is that the A-A of structural representation of the temperature revised described in a embodiment of the present invention poor fixing tubular type assay furnace is to schematic diagram;
Fig. 3 is the wiring schematic diagram of the temperature the revised poor fixing tubular type assay furnace described in the embodiment of the present invention.
In figure:
1, body of heater; 2, electrical heating boiler tube; 3, standard couple intubate; 4, temperature-control heat couple intubate; 5, tested thermopair intubate one; 6, tested thermopair intubate two; 7, high-temperature glue inserts; 8, insulation material; 9, temperature-control heat couple; 10, temperature controller; 11, executive component; 12, standard couple; 13, tested thermopair.
Embodiment
As Figure 1-3, a kind of temperature poor fixing tubular type assay furnace of revising described in the embodiment of the present invention, comprise body of heater 1, the interior center position of described body of heater 1 is provided with electrical heating boiler tube 2, in described electrical heating boiler tube 2, be provided with standard couple intubate 3, temperature-control heat couple intubate 4, tested thermopair intubate 1 and tested thermopair intubate 26, described standard couple intubate 3 and temperature-control heat couple intubate 4 are all positioned at described electrical heating boiler tube 2 central axis positions, be evenly distributed with multiple tested thermopair intubate 1 around described standard couple intubate 3, be evenly distributed with multiple tested thermopair intubate 26 around described temperature-control heat couple intubate 4, described multiple tested thermopair intubate 1 and described multiple tested thermopair intubate 26 are all positioned at the concentric circles position of described electrical heating boiler tube 2, the pipe diapire of described standard couple intubate 3 and described multiple tested thermopair intubate 1 is identical apart from the vertical distance between center line of described electrical heating boiler tube 2 with the pipe diapire of temperature-control heat couple intubate 4 and described multiple tested thermopair intubate 26 apart from the vertical distance between center line of described electrical heating boiler tube 2, between described standard couple intubate 3, temperature-control heat couple intubate 4, described multiple tested thermopair intubate 1 and described multiple tested thermopair intubate 26, be all filled with high-temperature glue inserts 7, between described body of heater 1 and described electrical heating boiler tube 2, be filled with insulation material 8, in described temperature-control heat couple intubate 4, be inserted with temperature-control heat couple 9, described temperature-control heat couple 9 is connected with temperature controller 10, described temperature controller 10 is connected with executive component 11, described executive component 11 is connected with described electric heating tube 2 by two binding posts of body of heater 1.
When concrete use, carry out before measurement verification operation use, complete according to Fig. 3 wiring, standard couple 12 as reference standard is inserted to standard couple intubate, other eight standard couples, as tested thermopair 13, insert respectively tested thermopair intubate, and temperature controller is set in to required test temperature point upper (as 800 ℃ etc.), connect temperature controller power supply, just by executive component, electric tube furnace is carried out to heated for controlling temperature operation.Treat that temperature constant is in test temperature value, measure respectively the millivolt value of eight standard couples in the standard couple of reference standard and other eight tested thermopair intubate, be converted into temperature value, deduct respectively the temperature value of the standard couple of reference standard with the temperature value of other eight standard couples, obtain the deviate of the standard couple temperature value of each intubate top end and reference standard, be temperature field poor.Before a temperature difference, adding a negative sign separately, is exactly a temperature modified value of each intubate top end.
During for actual thermopair metering calibrating, respectively eight tested thermopairs are inserted to tested thermopair intubate, feel freely be inserted into apical position, connect thermocouple assay circuit, different test temperatures is set on temperature controller, treat that temperature control is in steady state (SS), the millivolt value of testing standard thermopair intubate Plays thermopair and each tested thermopair respectively, be converted into temperature value, again tested electric thermo-couple temperature value is added to a temperature modified value of corresponding intubate measuring junction present position, be the actual temperature value of tested thermopair, deduct the temperature value of standard couple by the actual temperature value of tested thermopair, it is exactly the temperature deviation of tested thermopair, this deviate contrast national Specification value, can judge whether product quality meets regulation requirement.
Can revise a temperature poor fixing tubular type assay furnace, comprise assay furnace body of heater, assay furnace body of heater is filled with insulation material, in insulation material, be enclosed with electrical heating boiler tube, in electrical heating boiler tube, be fixedly packaged with the refractory ceramics pipe assembly of one end sealing, its ceramic pipe assembly has comprised a standard couple intubate, temperature-control heat couple intubate and eight symmetries are arranged on the tested thermopair intubate of boiler tube both sides same depth, being arranged on whole intubate in electrical heating boiler tube adopts high temperature resistant inserts to be adhesively fixed, thus, keep a temperature difference between each tested thermopair intubate inner chamber top end temperature and standard couple intubate inner chamber top end temperature to remain constant, be convenient in actual calibrating temperature poor a correction, to eliminate temperature poor and temperature poor uncertain error and an erroneous judgement bringing to verification result.
Be provided with a cavity-like electrical heating boiler tube at assay furnace body of heater center.Standard couple intubate, temperature-control heat couple intubate and tested thermopair intubate, mutually insulated, can prevent the pollution of high-temperature atmosphere state cheap metal to noble metal, guarantees that noble metal standard couple is not damaged.Tested thermopair intubate distributes symmetrically and evenly around standard couple intubate axis, and insertion depth is identical, has eliminated the poor existence of level temperature.Tested thermopair intubate distributes symmetrically and evenly around standard couple intubate axis, and insertion depth is identical, and vertical temperature poor fixing, can test acquisition in advance, when use, is revised.Tested thermopair cannula inner diameter and the degree of depth in refractory ceramics pipe assembly immobilize, when product calibrating operation, shove charge operation is very easy, only product need be inserted into the end of to, can not cause because shove charge is improper additional temperature field poor, cause product quality misjudgement and erroneous judgement.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection scope of the present invention.
Claims (6)
1. can revise a temperature poor fixing tubular type assay furnace for one kind, comprise body of heater (1), the interior center position of described body of heater (1) is provided with electrical heating boiler tube (2), in described electrical heating boiler tube (2), be provided with standard couple intubate (3), temperature-control heat couple intubate (4), tested thermopair intubate one (5) and tested thermopair intubate two (6), it is characterized in that: described standard couple intubate (3) and temperature-control heat couple intubate (4) are all positioned at described electrical heating boiler tube (2) central axis position, be evenly distributed with multiple tested thermopair intubate one (5) around described standard couple intubate (3), be evenly distributed with multiple tested thermopair intubate two (6) around described temperature-control heat couple intubate (4), described multiple tested thermopair intubate one (5) and described multiple tested thermopair intubate two (6) are all positioned at the concentric circles position of described electrical heating boiler tube (2), vertically distance between center line is identical apart from the vertical distance between center line of described electrical heating boiler tube (2) with the pipe diapire of temperature-control heat couple intubate (4) and described multiple tested thermopair intubate two (6) apart from described electrical heating boiler tube (2) for the pipe diapire of described standard couple intubate (3) and described multiple tested thermopair intubate one (5), between described standard couple intubate (3), temperature-control heat couple intubate (4), described multiple tested thermopair intubate one (5) and described multiple tested thermopair intubate two (6), be all filled with high-temperature glue inserts (7).
2. the temperature poor fixing tubular type assay furnace of revising according to claim 1, is characterized in that: between described body of heater (1) and described electrical heating boiler tube (2), be filled with insulation material (8).
3. the temperature poor fixing tubular type assay furnace of revising according to claim 2, is characterized in that: in described temperature-control heat couple intubate (4), be inserted with temperature-control heat couple (9).
4. the temperature poor fixing tubular type assay furnace of revising according to claim 3, is characterized in that: described temperature-control heat couple (9) is connected with temperature controller (10).
5. the temperature poor fixing tubular type assay furnace of revising according to claim 4, is characterized in that: described temperature controller (10) is connected with executive component (11).
6. the temperature poor fixing tubular type assay furnace of revising according to claim 5, is characterized in that: described executive component (11) is connected with described electric heating tube (2) by two binding posts of body of heater (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410159008.2A CN103913257B (en) | 2014-04-18 | 2014-04-18 | Fixed pipe type calibration furnace capable of correcting thermal field difference |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410159008.2A CN103913257B (en) | 2014-04-18 | 2014-04-18 | Fixed pipe type calibration furnace capable of correcting thermal field difference |
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| CN103913257A true CN103913257A (en) | 2014-07-09 |
| CN103913257B CN103913257B (en) | 2017-02-15 |
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| CN201410159008.2A Active CN103913257B (en) | 2014-04-18 | 2014-04-18 | Fixed pipe type calibration furnace capable of correcting thermal field difference |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106017739A (en) * | 2016-07-28 | 2016-10-12 | 无锡信大气象传感网科技有限公司 | Temperature sensor calibration device |
| CN106225954A (en) * | 2016-07-28 | 2016-12-14 | 无锡信大气象传感网科技有限公司 | There is the calibrating device for temperature sensor of electromagnetic induction roller heating |
| CN106248253A (en) * | 2016-07-28 | 2016-12-21 | 无锡信大气象传感网科技有限公司 | The temperature sensor calibrator (-ter) unit of uniform temperature fields |
| CN107764436A (en) * | 2017-11-03 | 2018-03-06 | 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 calibrating installation of Wolfram rhenium heat electric couple |
| CN111413011A (en) * | 2020-04-21 | 2020-07-14 | 北京空天技术研究所 | Method for testing influence of high-temperature conduction of adhesive on temperature measurement of thermocouple |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017739A (en) * | 2016-07-28 | 2016-10-12 | 无锡信大气象传感网科技有限公司 | Temperature sensor calibration device |
| CN106225954A (en) * | 2016-07-28 | 2016-12-14 | 无锡信大气象传感网科技有限公司 | There is the calibrating device for temperature sensor of electromagnetic induction roller heating |
| CN106248253A (en) * | 2016-07-28 | 2016-12-21 | 无锡信大气象传感网科技有限公司 | The temperature sensor calibrator (-ter) unit of uniform temperature fields |
| CN107764436A (en) * | 2017-11-03 | 2018-03-06 | 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 calibrating installation of Wolfram rhenium heat electric couple |
| CN111413011A (en) * | 2020-04-21 | 2020-07-14 | 北京空天技术研究所 | Method for testing influence of high-temperature conduction of adhesive on temperature measurement of thermocouple |
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|---|---|
| CN103913257B (en) | 2017-02-15 |
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