CN208520492U - A kind of bimetallic thermocouple thermometer - Google Patents
A kind of bimetallic thermocouple thermometer Download PDFInfo
- Publication number
- CN208520492U CN208520492U CN201721649109.3U CN201721649109U CN208520492U CN 208520492 U CN208520492 U CN 208520492U CN 201721649109 U CN201721649109 U CN 201721649109U CN 208520492 U CN208520492 U CN 208520492U
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- measuring rod
- cathode
- metal
- coating layer
- rhenium
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Abstract
The utility model relates to a kind of bimetallic thermocouple thermometers, including measurement end and display instrument, the measurement end includes positive measuring rod and cathode measuring rod, the anode measuring rod includes the first measuring rod core, the surface plating of the first measuring rod core is equipped with the first metal iridium coating layer, the surface plating of the first metal iridium coating layer is equipped with the first rhenium metal coating, the cathode measuring rod includes the second measuring rod core, the surface plating of the second measuring rod core is equipped with the second rhenium metal coating, the surface plating of the second rhenium metal coating is equipped with the second metal iridium coating layer, one end of the anode measuring rod and cathode measuring rod is connected separately with display instrument.Bimetallic thermocouple thermometer described in the utility model has the characteristics that superhigh temperature, anti-oxidant, obdurability.
Description
Technical field
The utility model relates to temperature thermocouple technical fields, and in particular to a kind of bimetallic thermocouple thermometer.
Background technique
Thermocouple is a kind of field of temperature measurement commonly temperature element, is combined into back by the conductor both ends of two kinds of heterogeneities
Lu Shi will generate thermocurrent when two binding site temperature differences in the loop.If thermocouple working end and reference end exist
The temperature difference, display instrument will indicate temperature value corresponding to the thermoelectrical potential of thermocouple generation.The thermoelectrical potential of thermocouple will be with
Measurement end temperature increases and increases, its size is only related with thermocouple material and both ends temperature, with the length of thermode and directly
Diameter size is unrelated.
Common measurement pyrometer couple is that have platinum rhodium thermocouple, iridium rhodium thermocouple, Wolfram rhenium heat electric couple.Wherein platinum rhodium type heat
The limiting temperature highest that platinum rhodium 40- platinum rhodium 20 measures in galvanic couple, can reach about 1800 DEG C；The iridium rhodium 40- iridium heat succeeded in developing
Galvanic couple can measure about 2100 DEG C of limiting temperature；Refractory metal W-Re thermocouple limit thermometric can reach about 2400 DEG C, be to answer at present
With the highest thermocouple of thermometric.But pure iridium alloy toughness is poor, easy brittle failure, and the easy oxygen of pure tungsten rhenium alloys currently on the market
Change, service life is shorter in the presence of a harsh environment.
Therefore a kind of superhigh temperature, anti-oxidant, obdurability and the longer thermocouple of service life in the presence of a harsh environment are studied
Thermometer is one of the field urgent problem to be solved.
Utility model content
In view of problems of the prior art, the purpose of the utility model is to provide a kind of superhigh temperature, anti-oxidant, tough
The bimetallic thermocouple thermometer of property.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of bimetallic thermocouple thermometer, including measurement end and display instrument, the measurement end include anode measurement
Bar and cathode measuring rod, the anode measuring rod include the first measuring rod core, and the surface plating of the first measuring rod core is equipped with the
The surface plating of one metal iridium coating layer, the first metal iridium coating layer is equipped with the first rhenium metal coating, and the cathode measuring rod includes
The surface plating of second measuring rod core, the second measuring rod core is equipped with the second rhenium metal coating, the second rhenium metal coating
Surface, which is plated, is equipped with the second metal iridium coating layer, and one end of the anode measuring rod and cathode measuring rod is connected separately with display instrument
Table.
Further, wherein the bimetallic thermocouple thermometer further includes compensating wire, it is described anode measuring rod and
Cathode measuring rod passes through compensating wire respectively and connect with display instrument.
Further, wherein it is described anode measuring rod in the thickness of the first metal iridium coating layer and the thickness of the first rhenium metal coating
The ratio between degree is 1:(1.5-2.5).
Further, wherein in the cathode measuring rod thickness of the second metal iridium coating layer and the second rhenium metal coating thickness
That spend ratio is 1:(0.5-1).
Further, wherein the diameter of the anode measuring rod and cathode measuring rod is 0.5-0.8mm.
Further, wherein the first measuring rod core and the second measuring rod core are made of metal tantalum.
Further, wherein further including thermocouple protective casing, the thermocouple protective casing is sheathed on the anode and surveys
On gauge rod and cathode measuring rod.
The utility model has the advantages that
Bimetallic thermocouple thermometer provided by the utility model, the anode measuring rod includes metal iridium coating layer and gold
Belong to rhenium coating, and the thickness of metal iridium coating layer and rhenium metal coating layer thickness ratio are 1:(1.5-2.5), the cathode measuring rod includes
Rhenium metal coating and metal iridium coating layer, and the thickness of metal iridium coating layer and rhenium metal coating layer thickness ratio are 1:(0.5-1) so that
The bimetallic thermocouple thermometer has the characteristics that superhigh temperature, anti-oxidant, obdurability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of bimetallic thermocouple thermometer provided by the utility model；
In figure, 1- display instrument, 2- compensating wire, 3- cathode measuring rod, 4- anode measuring rod.
Specific embodiment
The utility model provides a kind of bimetallic thermocouple thermometer, illustrates to be embodied with specific embodiment below
Mode, it should be understood that specific embodiment described herein is only used to explain the utility model, is not used to limit originally practical
It is novel.
Embodiment 1
Shown in referring to Fig.1, the utility model provides a kind of bimetallic thermocouple thermometer, including measurement end and display
Instrument 1, the measurement end include positive measuring rod 4 and cathode measuring rod 3, and the anode measuring rod 4 includes the first measuring rod core,
The surface plating of the first measuring rod core is equipped with the first metal iridium coating layer, and the first metal iridium coating surface plating is equipped with the first gold medal
Belong to rhenium coating, the cathode measuring rod 3 includes the second measuring rod core, and the surface plating of the second measuring rod core is equipped with the second metal
Rhenium coating, the surface plating of the second rhenium metal coating are equipped with the second metal iridium coating layer, and the anode measuring rod 4 and cathode are surveyed
One end of gauge rod 3 is connected separately with display instrument 1, when the bimetallic thermocouple thermometer when in use, the display instrument 1
It can accurately show measurement temperature.
The bimetallic thermocouple thermometer further includes compensating wire 2, the anode measuring rod 4 and cathode measuring rod 3
It is connect respectively by compensating wire 2 with display instrument 1, the bimetallic thermocouple thermometer, when in use, the anode measurement
Bar 4 and cathode measuring rod 3 are both placed in measured vessel, when the positive measuring rod 4 has temperature with cathode measuring rod 3
When poor, the anode measuring rod 4, cathode measuring rod 3, compensating wire 2 and display instrument 1 constitute circuit, due to temperature in circuit
Difference generates thermocurrent, and display instrument 1 will indicate temperature value corresponding to the thermoelectrical potential of thermocouple generation.
The diameter of the anode measuring rod 4 and cathode measuring rod 3 is 0.5-0.8mm；The first measuring rod core and
Two measuring rod cores are made of metal tantalum；The thickness and the first rhenium metal coating of first metal iridium coating layer in the anode measuring rod 4
The ratio between thickness be 1:(1.5-2.5)；The thickness of second metal iridium coating layer and the second rhenium metal coating in the cathode measuring rod 3
The ratio between thickness be 1:(0.5-1), the metal iridium coating layer has high-temperature oxidation resistance, and the metal tantalum measuring rod core has
High-elongation, the rhenium metal coating has high temperature plasticity (high temperature fusing point is 3000 DEG C), so that the bimetallic thermocouple
Thermometer has the characteristics that superhigh temperature, anti-oxidant, obdurability.
The bimetallic thermocouple thermometer further includes thermocouple protective casing, and the thermocouple protective casing is sheathed on institute
It states on positive measuring rod 4 and cathode measuring rod 3, for protecting positive measuring rod 4 and cathode measuring rod 3, to prevent being corroded
Or damage.
Finally, it should be noted that above-described each embodiment is merely to illustrate the technical solution of the utility model, rather than
It is limited；Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art
It is understood that it can still modify to technical solution documented by previous embodiment, or to part of or whole
Technical characteristic is equivalently replaced；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution the utility model
The range of each embodiment technical solution.
Claims (5)
1. a kind of bimetallic thermocouple thermometer, which is characterized in that including measurement end and display instrument, the measurement end includes
Positive measuring rod and cathode measuring rod, the anode measuring rod includes the first measuring rod core, the surface of the first measuring rod core
Plating is equipped with the first metal iridium coating layer, and the surface plating of the first metal iridium coating layer is equipped with the first rhenium metal coating, and the cathode is surveyed
Gauge rod includes the second measuring rod core, and the surface plating of the second measuring rod core is equipped with the second rhenium metal coating, second metal
The surface of rhenium coating, which is plated, is equipped with the second metal iridium coating layer, and one end of the anode measuring rod and cathode measuring rod is connected separately with
Display instrument, the thickness of the first metal iridium coating layer and the ratio between the thickness of the first rhenium metal coating are 1 in the anode measuring rod:
(1.5-2.5), the ratio between thickness of the thickness of the second metal iridium coating layer and the second rhenium metal coating is 1 in the cathode measuring rod:
(0.5-1)。
2. bimetallic thermocouple thermometer according to claim 1, which is characterized in that further include compensating wire, it is described just
Pole measuring rod and cathode measuring rod pass through compensating wire respectively and connect with display instrument.
3. bimetallic thermocouple thermometer according to claim 2, which is characterized in that the anode measuring rod and cathode are surveyed
The diameter of gauge rod is 0.5-0.8mm.
4. bimetallic thermocouple thermometer according to claim 2, which is characterized in that the first measuring rod core and second
Measuring rod core is made of metal tantalum.
5. bimetallic thermocouple thermometer according to claim 1-4, which is characterized in that further include that thermocouple is protected
Protecting pipe, the thermocouple protective casing are sheathed on the positive measuring rod and cathode measuring rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721649109.3U CN208520492U (en) | 2017-11-30 | 2017-11-30 | A kind of bimetallic thermocouple thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721649109.3U CN208520492U (en) | 2017-11-30 | 2017-11-30 | A kind of bimetallic thermocouple thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208520492U true CN208520492U (en) | 2019-02-19 |
Family
ID=65328055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721649109.3U Expired - Fee Related CN208520492U (en) | 2017-11-30 | 2017-11-30 | A kind of bimetallic thermocouple thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208520492U (en) |
-
2017
- 2017-11-30 CN CN201721649109.3U patent/CN208520492U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 |