CN109974881A - A kind of thermal resistance thermometer - Google Patents
A kind of thermal resistance thermometer Download PDFInfo
- Publication number
- CN109974881A CN109974881A CN201910197689.4A CN201910197689A CN109974881A CN 109974881 A CN109974881 A CN 109974881A CN 201910197689 A CN201910197689 A CN 201910197689A CN 109974881 A CN109974881 A CN 109974881A
- Authority
- CN
- China
- Prior art keywords
- thermal resistance
- resistance
- branch
- junction block
- sleeve pipe
- 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
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
Classifications
-
- 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
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of thermal resistance thermometers; including junction block, protection sleeve pipe; thermal resistance, the first divider resistance, the second divider resistance, diode are equipped in protection sleeve pipe; power supply and current measurement device are equipped in junction block; wherein power supply, current measurement device, the first divider resistance, thermal resistance series loop in series; diode is negative to constitute the first branch with the second divider resistance, and the first branch is in parallel with thermal resistance.The present invention can be used in temperature working environment jumpy, improve job stability.
Description
Technical field
The present invention relates to temperature instrumentation field, specifically a kind of thermal resistance thermometer.
Background technique
Thermal resistance thermometer is one of common thermometer type, using thermal resistance with temperature increase and resistance is increased
Principle carries out thermometric, and on-load voltage is on thermal resistance to generate electric current, and when temperature increases, thermal resistance resistance value increases, from
And electric current becomes smaller, and corresponding temperature value can be obtained by analysis to current values and conversion.Prior art resistance and temperature
When counting in some application fields such as chemical field, it is frequently encountered the case where such as explosion rapidly heats up, at this time resistance and temperature
The resistance value of meter rapidly increases, and electric current becomes smaller rapidly, will appear the too small problem of current value in this way, causes subsequent to be difficult to calculate
Corresponding temperature.
The object of the present invention is to provide a kind of thermal resistance thermometers for summary of the invention, to solve prior art resistance and temperature
The problem of working environment that meter can not be suitable for rapidly heating up.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of thermal resistance thermometer is set in protection sleeve pipe including junction block and the vertical protection sleeve pipe for being connected to junction block bottom surface
There is thermal resistance, it is characterised in that: the first divider resistance, the second divider resistance, diode are additionally provided in protection sleeve pipe, in junction block
Equipped with power supply and current measurement device, wherein power supply, current measurement device, the first divider resistance, thermal resistance series connection in series
Circuit, diode cathode and second divider resistance one end connect and compose the first branch, diode cathode and thermoelectricity in the first branch
One end of resistance connection positive pole connects, and the second divider resistance other end connect the one of power cathode with thermal resistance in the first branch
End connection, thus makes the first branch be parallel to thermal resistance.
A kind of thermal resistance thermometer, it is characterised in that: the current measurement device is digital ammeter, number
Formula ammeter output end is connected with output line, and output line is pierced by from junction block and connect afterwards with external equipment.
A kind of thermal resistance thermometer, it is characterised in that: alarm lamp, the alarm lamp are also in series in the first branch
It is set to junction block or protection sleeve pipe surface.
In the present invention, power supply, current measurement device, the first divider resistance, thermal resistance circuit in series, when temperature increases
When thermal resistance resistance value become larger, electric current reduces in circuit, and voltage reduces on the first divider resistance.When temperature increased dramatically, circuit
Middle electric current is reduced rapidly, and the numerical value that current measurement device can measure becomes smaller rapidly, it is difficult to obtain effective current numerical value, while
Voltage is reduced rapidly on one divider resistance, and since power supply total voltage is constant, voltage is increased rapidly on thermal resistance.The first branch
It is in parallel with thermal resistance, therefore when voltage increases rapidly on thermal resistance, the voltage of the first branch is also increased rapidly, when voltage reaches
To diode conducting voltage when, diode current flow, to generate electric current in the first branch, the electric current in the first branch is imported
Current measurement device is entered back into after first divider resistance, so as to make current measurement device re-measure effective electric current number
Value.
Compared with prior art, the present invention can be used in temperature working environment jumpy, avoids temperature and sharply rises
The problem of height causes thermal resistance resistance value sharply to become larger, current measurement device is unable to get effective current numerical value, it is steady to improve work
It is qualitative.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, a kind of thermal resistance thermometer, including junction block 1 and the vertical protective case for being connected to 1 bottom surface of junction block
Pipe 2, protection sleeve pipe 2 is interior to be equipped with thermal resistance 3, is additionally provided with the first divider resistance 4, the second divider resistance 5, two poles in protection sleeve pipe 2
Pipe 6 is equipped with power supply 7 and current measurement device 8 in junction block 1, wherein power supply 7, current measurement device 8, the first divider resistance 4,
The series loop in series of thermal resistance 3,6 cathode of diode and 5 one end of the second divider resistance connect and compose the first branch, and first
6 anode of diode connect one end connection of 7 anode of power supply, 5 other end of the second divider resistance in the first branch with thermal resistance 3 in road
It connect one end connection of 7 cathode of power supply with thermal resistance 3, the first branch is thus made to be parallel to thermal resistance 3.
Current measurement device 8 is digital ammeter, and digital ammeter output end is connected with output line, and output line is from connecing
Line seat 1 is connect after being pierced by with external equipment.
Alarm lamp 9 is also in series in the first branch, alarm lamp 9 is set to 2 surface of junction block 1 or protection sleeve pipe.When first
When generating electric current in branch, alarm lamp work can carry out police instruction when temperature sharply increases.
Claims (3)
1. a kind of thermal resistance thermometer, it is connected to the protection sleeve pipe of junction block bottom surface including junction block and vertically, in protection sleeve pipe
Equipped with thermal resistance, it is characterised in that: be additionally provided with the first divider resistance, the second divider resistance, diode, junction block in protection sleeve pipe
It is interior to be equipped with power supply and current measurement device, wherein power supply, current measurement device, the first divider resistance, thermal resistance string in series
Join circuit, diode cathode and second divider resistance one end connect and compose the first branch, diode cathode and heat in the first branch
Resistance connects one end connection of positive pole, and the second divider resistance other end connect power cathode with thermal resistance in the first branch
One end connection, thus makes the first branch be parallel to thermal resistance.
2. a kind of thermal resistance thermometer according to claim 1, it is characterised in that: the current measurement device is digital
Ammeter, digital ammeter output end are connected with output line, and output line is pierced by from junction block and connect afterwards with external equipment.
3. a kind of thermal resistance thermometer according to claim 1, it is characterised in that: be also in series with alarm in the first branch
Lamp, the alarm lamp are set to junction block or protection sleeve pipe surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910197689.4A CN109974881A (en) | 2019-03-15 | 2019-03-15 | A kind of thermal resistance thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910197689.4A CN109974881A (en) | 2019-03-15 | 2019-03-15 | A kind of thermal resistance thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109974881A true CN109974881A (en) | 2019-07-05 |
Family
ID=67079027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910197689.4A Pending CN109974881A (en) | 2019-03-15 | 2019-03-15 | A kind of thermal resistance thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109974881A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036324U (en) * | 1988-03-26 | 1989-04-19 | 郭永明 | Metallic thermal resistance type over load and heat protector for electric motor |
| CN2335293Y (en) * | 1998-07-31 | 1999-08-25 | 宝山钢铁(集团)公司 | Self-recovery indicating type protector |
| CN105371976A (en) * | 2014-08-20 | 2016-03-02 | 哈尔滨理大晟源科技开发有限公司 | Thermal resistance temperature measuring device and temperature measuring method |
| CN205785578U (en) * | 2016-05-24 | 2016-12-07 | 北京市科海龙华工业自动化仪器有限公司 | A kind of high-precision thermal resistance temperature sensor assembly |
| CN108152543A (en) * | 2018-01-19 | 2018-06-12 | 国网江苏省电力有限公司宿迁供电分公司 | A kind of electric energy metering wiring box with fault alarm function |
| CN209559357U (en) * | 2019-03-15 | 2019-10-29 | 上海电仪仪器仪表有限公司 | A kind of thermal resistance thermometer |
-
2019
- 2019-03-15 CN CN201910197689.4A patent/CN109974881A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036324U (en) * | 1988-03-26 | 1989-04-19 | 郭永明 | Metallic thermal resistance type over load and heat protector for electric motor |
| CN2335293Y (en) * | 1998-07-31 | 1999-08-25 | 宝山钢铁(集团)公司 | Self-recovery indicating type protector |
| CN105371976A (en) * | 2014-08-20 | 2016-03-02 | 哈尔滨理大晟源科技开发有限公司 | Thermal resistance temperature measuring device and temperature measuring method |
| CN205785578U (en) * | 2016-05-24 | 2016-12-07 | 北京市科海龙华工业自动化仪器有限公司 | A kind of high-precision thermal resistance temperature sensor assembly |
| CN108152543A (en) * | 2018-01-19 | 2018-06-12 | 国网江苏省电力有限公司宿迁供电分公司 | A kind of electric energy metering wiring box with fault alarm function |
| CN209559357U (en) * | 2019-03-15 | 2019-10-29 | 上海电仪仪器仪表有限公司 | A kind of thermal resistance thermometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101122627B (en) | Semi-conducting material thermoelectricity performance test system | |
| CN110133465B (en) | Method and system for calculating junction temperature of IGBT module | |
| CN106093654A (en) | The test device of thermoelectricity module conversion efficiency of thermoelectric and method of testing thereof | |
| CN105811944B (en) | Driving device and method for the estimation of IGBT junction temperature | |
| CN206945156U (en) | A kind of bus-type underground pipe wireless temperature measurement system | |
| CN105651409A (en) | Thermocouple cold junction compensation and temperature measurement circuit and device | |
| CN106054052A (en) | Semiconductor device temperature-voltage-current three-dimensional temperature-adjusting curve surface establishment method | |
| CN106840442A (en) | A kind of battery temperature measuring system and method | |
| CN105004949A (en) | Test method and test device of maximum current-carrying capacity of strain clamp running on line | |
| CN209559357U (en) | A kind of thermal resistance thermometer | |
| CN103926517A (en) | Device and method for testing thermal resistance of power type LED | |
| CN106482829A (en) | The dynamic and static combined test system of single-photon detector and its method of testing | |
| CN103292861B (en) | For the preparation method of totally-enclosed pressure environment fluid level measuring gauge | |
| CN203519207U (en) | Heat flux sensor | |
| CN109974881A (en) | A kind of thermal resistance thermometer | |
| CN206077069U (en) | A kind of converting equipment check device based on EMS system | |
| CN204188299U (en) | Multichannel IGBT inner NTC high temperature real-time detection circuit | |
| CN104199492A (en) | Temperature regulating device for measuring radio frequency/microwave power | |
| CN208458891U (en) | A kind of high-temperature metal melt temperature measuring device | |
| CN108414909B (en) | A kind of Darlington transistor steady state heat resistance measurement method based on electric method | |
| CN103134617A (en) | Intelligent heat engineering verification system | |
| CN202332865U (en) | Photovoltaic confluence and current monitoring structure | |
| CN104065335B (en) | photovoltaic confluence device | |
| CN106908165A (en) | Using the method and apparatus of thermosensitive resistance measurement temperature | |
| CN103612039A (en) | Inverter welder output current detecting circuit based on AC signal and detecting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |