CN107101734A - A kind of thermocouple structure - Google Patents
A kind of thermocouple structure Download PDFInfo
- Publication number
- CN107101734A CN107101734A CN201710362857.1A CN201710362857A CN107101734A CN 107101734 A CN107101734 A CN 107101734A CN 201710362857 A CN201710362857 A CN 201710362857A CN 107101734 A CN107101734 A CN 107101734A
- Authority
- CN
- China
- Prior art keywords
- thermode
- protection pipe
- instrument case
- thermostatic chamber
- thermocouple
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/20—Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of thermocouple structure; including protection pipe; the vertical thermode pair constituted provided with a pair of thermodes in protection pipe; thermode extends downward into lower end in protection pipe to thermometric end; it is connected with the top of protection pipe at the top of instrument case, instrument case and is connected with thermostatic chamber, the power supply provided with PTC fever tablets and PTC fever tablets in thermostatic chamber; thermode is stretched into thermostatic chamber after passing through instrument case to free end, and the measuring instrumentss in instrument case are connected with the thermode of thermode centering two respectively.The invention can ensure that the free end of thermocouple improves the accuracy of thermocouple temperature measurement end thermometric in temperature steady state.
Description
Technical field
The present invention relates to area of thermocouples, specifically a kind of thermocouple structure.
Background technology
Thermocouple is the temperature element commonly used in temperature measuring instrument, it can direct measurement temperature, and temperature signal is turned
Change thermo-electromotive force signal into.In the course of the work, thermometric end is used for thermometric to thermocouple, and free end needs keeping temperature constant.
In the thermocouple of prior art, two thermode one end connect as thermometric end altogether, and the two thermode other ends pass through compensating wire respectively
Thermocouple is accessed into measuring instrumentss, it is constant come keeping temperature using compensating wire.The thermocouple of this structure is due to compensating wire
Own material is limited, and unavoidably still suffers from small temperature difference, i.e. the temperature of thermocouple free end has small floating.
The content of the invention is it is an object of the invention to provide a kind of thermocouple structure, to solve prior art thermocouple free end
The problem of temperature is non-constant.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of thermocouple structure, it is characterised in that：Including vertically arranged protection pipe, the protection pipe is full-closed structure, protection
The vertical thermode pair constituted provided with a pair of thermodes in pipe, two thermode upper and lower ends, which are connected respectively, to be integrated, wherein two
The lower end that thermode is connected as one extends downward into lower end in protection pipe as thermometric end, and it is upper that two thermodes are connected as one
End is connected with instrument case, instrument case at the top of the protection pipe as free end and is provided with measuring instrumentss, is connected with the top of instrument case
Power supply provided with PTC fever tablets and PTC fever tablets in thermostatic chamber, thermostatic chamber, the free end of the thermode pair passes through instrument
Stretched into after watchcase in thermostatic chamber, the measuring instrumentss in instrument case are connected with the thermode of thermode centering two respectively by wire.
A kind of described thermocouple structure, it is characterised in that：The protection pipe lower end is set to round end structure, thermode pair
Thermometric end is stretched into round end structure.
A kind of described thermocouple structure, it is characterised in that：The thermostatic chamber is the totally-enclosed knot being made up of heat-barrier material
Structure,
In the present invention, two thermode upper ends are connected as one as free end, and free end is placed in thermostatic chamber, is generated heat using PTC
Piece constant temperature warming, can make the free end temperature in thermostatic chamber keep constant.After powered up, temperature rises rapidly simultaneously PTC fever tablets
Constant temperature can be kept, the free end that can ensure thermocouple using PTC fever tablets improves thermocouple survey in temperature steady state
The accuracy of warm end thermometric.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Embodiment
As shown in figure 1, a kind of thermocouple structure, including vertically arranged protection pipe 1, the protection pipe 1 is full-closed structure,
The vertical thermode pair constituted provided with a pair of thermodes 2,3 in protection pipe 1, two thermodes 2,3 upper and lower ends be connected respectively for
One, wherein the lower end that connects as one of two thermodes 2,3 extends downward into lower end in protection pipe 1, two thermoelectricity as thermometric end 4
The upper end that pole 2,3 is connected as one is as free end 5, and the top of protection pipe 1, which is connected with instrument case 6, instrument case 6, is provided with measuring instrument
Table 7, the top of instrument case 6 is connected with thermostatic chamber 8, thermostatic chamber 8 power supply 10 provided with PTC fever tablets 9 and PTC fever tablets 9,
The free end 5 of thermode pair is stretched into thermostatic chamber 8 after passing through instrument case 6, and the measuring instrumentss in instrument case 6 logical 7 cross wire difference
It is connected with the thermode 2,3 of thermode centering two.
The lower end of protection pipe 1 is set to round end structure 11, and the thermometric end 4 of thermode pair is stretched into round end structure 11.
Thermostatic chamber 8 is the full-closed structure being made up of heat-barrier material.
Claims (3)
1. a kind of thermocouple structure, it is characterised in that：Including vertically arranged protection pipe, the protection pipe is full-closed structure, is protected
The vertical thermode pair constituted provided with a pair of thermodes in pillar, two thermode upper and lower ends, which are connected respectively, to be integrated, wherein
The lower end that two thermodes are connected as one extends downward into lower end in protection pipe as thermometric end, what two thermodes were connected as one
Upper end is connected with instrument case, instrument case at the top of the protection pipe as free end and is provided with measuring instrumentss, is connected at the top of instrument case
There is the power supply provided with PTC fever tablets and PTC fever tablets in thermostatic chamber, thermostatic chamber, the free end of the thermode pair is passed through
Stretched into after instrument case in thermostatic chamber, the measuring instrumentss in instrument case are connected with the thermode of thermode centering two respectively by wire.
2. a kind of thermocouple structure according to claim 1, it is characterised in that：The protection pipe lower end is set to round end knot
Structure, the thermometric end of thermode pair is stretched into round end structure.
3. a kind of thermocouple structure according to claim 1, it is characterised in that：The thermostatic chamber of heat-barrier material by being made up
Full-closed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710362857.1A CN107101734A (en) | 2017-05-22 | 2017-05-22 | A kind of thermocouple structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710362857.1A CN107101734A (en) | 2017-05-22 | 2017-05-22 | A kind of thermocouple structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107101734A true CN107101734A (en) | 2017-08-29 |
Family
ID=59670504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710362857.1A Pending CN107101734A (en) | 2017-05-22 | 2017-05-22 | A kind of thermocouple structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107101734A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398793A (en) * | 2013-08-20 | 2013-11-20 | 国家电网公司 | Temperature measuring device based on thermocouple cold end compensation technology |
| CN203365005U (en) * | 2013-07-25 | 2013-12-25 | 淮安柯林斯尼电气有限公司 | Telemetering thermocouple |
| CN103575425A (en) * | 2012-07-24 | 2014-02-12 | 浙江泰索科技有限公司 | Automatic compensation-type thermocouple metrological verification polarity extension connector |
-
2017
- 2017-05-22 CN CN201710362857.1A patent/CN107101734A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575425A (en) * | 2012-07-24 | 2014-02-12 | 浙江泰索科技有限公司 | Automatic compensation-type thermocouple metrological verification polarity extension connector |
| CN203365005U (en) * | 2013-07-25 | 2013-12-25 | 淮安柯林斯尼电气有限公司 | Telemetering thermocouple |
| CN103398793A (en) * | 2013-08-20 | 2013-11-20 | 国家电网公司 | Temperature measuring device based on thermocouple cold end compensation technology |
Non-Patent Citations (1)
| Title |
|---|
| 钱进: "热电偶温度传感器冷端补偿和信号线性化", 《长江工程职业技术学院学报》 * |
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| SE01 | Entry into force of request for substantive examination |