CN210664832U - Temperature sensor calibrating device based on refrigerant fluid medium - Google Patents
Temperature sensor calibrating device based on refrigerant fluid medium Download PDFInfo
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- CN210664832U CN210664832U CN201921855135.0U CN201921855135U CN210664832U CN 210664832 U CN210664832 U CN 210664832U CN 201921855135 U CN201921855135 U CN 201921855135U CN 210664832 U CN210664832 U CN 210664832U
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- temperature
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- 239000012530 fluid Substances 0.000 title claims abstract description 18
- 239000003507 refrigerant Substances 0.000 title claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 97
- 235000019441 ethanol Nutrition 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 238000005192 partition Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of sensor calibration equipment, in particular to a temperature sensor calibration device based on refrigerant fluid medium, which comprises an alcohol tank and a constant temperature calibration box, wherein a liquid inlet pipe and a liquid outlet pipe are arranged between the constant temperature calibration box and the alcohol tank, a micro alcohol pump is arranged between the liquid inlet pipe and the alcohol tank, and the micro alcohol pump is used for pumping absolute ethyl alcohol in the alcohol tank into the constant temperature calibration box; the inner cavity of the alcohol tank is divided into a first cavity and a second cavity through a vertical partition plate, the liquid inlet pipe and the liquid outlet pipe are both connected with the first cavity, and a rotating shaft is vertically arranged in the second cavity. The utility model provides a temperature sensor calibrating device based on refrigerant fluid medium has the advantages of miniaturation, portableization, easily removal and installation, can realize the on-the-spot calibration of the temperature sensor of high altitude or narrow and small space department, can realize the quick adjustment and the stability of calibration chamber temperature, has high accuracy and homogeneity.
Description
Technical Field
The utility model relates to a sensor calibration equipment technical field especially relates to a temperature sensor calibrating device based on refrigerant fluid medium.
Background
The temperature sensor is widely applied in various industries, and along with the aging of components and equipment and other reasons, the precision of the temperature sensor is reduced, so that the precision of the temperature sensor needs to be regularly calibrated through a calibration device. The existing calibrating device for the temperature sensor generally measures and compares the temperature in the heat conduction medium in the cavity through a standard temperature sensor and a temperature sensor to be measured for calibration, but the temperature field of the heat conduction medium in the cavity is not uniformly distributed, and the measured temperature fields are different, so that the calibrating precision of the sensor is lower.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a high temperature sensor calibrating device based on refrigerant fluid medium of calibration precision is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a temperature sensor calibration device based on a refrigerant fluid medium comprises an alcohol tank and a constant-temperature calibration box, wherein a liquid inlet pipe and a liquid outlet pipe are arranged between the constant-temperature calibration box and the alcohol tank, a micro alcohol pump is arranged between the liquid inlet pipe and the alcohol tank, and the micro alcohol pump is used for pumping absolute ethyl alcohol in the alcohol tank into the constant-temperature calibration box;
the inner cavity of the alcohol tank is divided into a first cavity and a second cavity by a vertical partition plate, the liquid inlet pipe and the liquid outlet pipe are both connected with the first cavity, a rotating shaft is vertically arranged in the second cavity, one end of the rotating shaft penetrates through the top of the alcohol tank and is connected with a motor, the other end of the rotating shaft is provided with a stirrer, and a heater is arranged in the second cavity around the rotating shaft;
the calibration device comprises a constant-temperature calibration box, a temperature measuring thermocouple, a temperature control thermocouple, a temperature controller and a heater, wherein a calibration hole for inserting a temperature sensor to be calibrated is formed in the top of the constant-temperature calibration box, the bottom of an inner cavity of the constant-temperature calibration box is respectively provided with the temperature measuring thermocouple and the temperature control thermocouple, one end of the temperature measuring thermocouple is in contact with absolute ethyl alcohol in the constant-temperature calibration box, the other end of the temperature measuring thermocouple is connected with the temperature measurer, one end of the temperature control thermocouple is in contact with absolute ethyl alcohol in the constant-temperature calibration box, the other end of the temperature.
In an alternative embodiment, the heater comprises a coil evaporator and a coil heater, and the temperature controller is respectively connected with the coil evaporator and the coil heater.
In an alternative embodiment, the agitator is an agitating blade mounted on a rotating shaft.
In an alternative embodiment, the liquid inlet pipe and the liquid outlet pipe are both heat insulation hoses.
In an alternative embodiment, a sealing rubber ring is arranged in the calibration hole.
In an alternative embodiment, the motor and the micro alcohol pump are separately connected to a power source.
In an alternative embodiment, the side wall of the alcohol tank is provided with an interface for connecting a power line of the heater.
The beneficial effects of the utility model reside in that: compared with the prior art, the temperature sensor calibration device based on the refrigerant fluid medium has the advantages of miniaturization, portability, easy movement and installation, and can realize the field calibration of the temperature sensor at high altitude or narrow space; through the drive of miniature alcohol pump, the alcohol medium flows fast between alcohol groove and constant temperature calibration case, realizes calibration chamber temperature's quick adjustment and stability, has high accuracy and homogeneity.
Drawings
Fig. 1 is a schematic structural diagram of a temperature sensor calibration apparatus based on a refrigerant fluid medium according to an embodiment of the present invention;
description of reference numerals:
1-alcohol tank; 11-a separator; 12-a first chamber; 13-a second chamber; 14-a rotating shaft; 15-a motor; 16-a stirrer; 17-a heater;
2-constant temperature calibration box; 21-a calibrated hole; 22-temperature thermocouple; 23-temperature control thermocouple; 24-a temperature measuring instrument; 25-a temperature controller;
3-a liquid inlet pipe;
4-a liquid outlet pipe;
5-micro alcohol pump.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the temperature sensor calibration device based on refrigerant fluid medium of the present invention includes an alcohol tank and a constant temperature calibration box, wherein a liquid inlet pipe and a liquid outlet pipe are disposed between the constant temperature calibration box and the alcohol tank, a micro alcohol pump is disposed between the liquid inlet pipe and the alcohol tank, and the micro alcohol pump is used for pumping absolute ethyl alcohol in the alcohol tank into the constant temperature calibration box;
the inner cavity of the alcohol tank is divided into a first cavity and a second cavity by a vertical partition plate, the liquid inlet pipe and the liquid outlet pipe are both connected with the first cavity, a rotating shaft is vertically arranged in the second cavity, one end of the rotating shaft penetrates through the top of the alcohol tank and is connected with a motor, the other end of the rotating shaft is provided with a stirrer, and a heater is arranged in the second cavity around the rotating shaft;
the calibration device comprises a constant-temperature calibration box, a temperature measuring thermocouple, a temperature control thermocouple, a temperature controller and a heater, wherein a calibration hole for inserting a temperature sensor to be calibrated is formed in the top of the constant-temperature calibration box, the bottom of an inner cavity of the constant-temperature calibration box is respectively provided with the temperature measuring thermocouple and the temperature control thermocouple, one end of the temperature measuring thermocouple is in contact with absolute ethyl alcohol in the constant-temperature calibration box, the other end of the temperature measuring thermocouple is connected with the temperature measurer, one end of the temperature control thermocouple is in contact with absolute ethyl alcohol in the constant-temperature calibration box, the other end of the temperature.
From the above description, the beneficial effects of the present invention are: when the device is used, the temperature sensor to be calibrated is inserted into the calibration hole and sealed, the calibration cavity of the constant-temperature calibration box is connected with the high-precision constant-temperature alcohol tank through the liquid inlet pipe and the liquid outlet pipe, and the micro alcohol pump pumps the constant-temperature alcohol medium in the tank into the calibration cavity and fills the calibration cavity; the temperature thermocouple is installed at the bottom of the calibration cavity, the standard temperature of alcohol in the calibration cavity is measured by the high-precision thermometer and is compared with the temperature measured by the temperature sensor to be measured, the measurement error of the temperature sensor to be measured is obtained, meanwhile, the temperature thermocouple is installed at the bottom of the calibration cavity, the measured temperature is fed back to the temperature controller, the heater is controlled to work, and the temperature of the alcohol in the control tank is stabilized at the set temperature. The working medium of the system is absolute ethyl alcohol, and the working principle of the alcohol medium in the system is as follows: under the driving of the stirrer, the alcohol medium flows from top to bottom in the mixing area of the first cavity on the left side, heat exchange is carried out by the heater firstly, after the alcohol medium reaches a certain proper temperature, the alcohol medium is intensively stirred by the stirrer, fully mixed and pushed to flow out from the bottom, and then the alcohol medium is guided upwards to enter a constant temperature area in the constant temperature calibration box; under the drive of the miniature alcohol pump, pumping a constant-temperature alcohol medium into the calibration cavity from the constant-temperature tank along the liquid inlet pipe, wherein the alcohol medium in the calibration cavity flows from top to bottom and then returns to the alcohol tank through the liquid outlet pipe; the temperature control thermocouple connected with the temperature controller is arranged in the fluid of the calibration cavity and is used for measuring temperature signals, so that the temperature control system pushes the heater to work in a PID (proportion integration differentiation) regulation mode according to temperature changes, and the temperature of the constant temperature area is automatically controlled to work at a set temperature; and the temperature thermocouple connected with the high-precision thermometer is arranged in the fluid of the calibration cavity, is used for measuring the alcohol medium standard temperature under the calibration condition, and is used for comparing the alcohol medium standard temperature with the temperature measured by the temperature sensor to be measured to obtain the measurement error calibration result.
Further, the heater comprises a coil evaporator and a coil heater, and the temperature controller is respectively connected with the coil evaporator and the coil heater.
From the above description, the temperature controller measures the temperature signal through the temperature control thermocouple, so that the temperature control system drives the evaporator and the heater to work in a PID adjustment mode according to the temperature change, and the temperature of the constant temperature area is controlled within the set temperature range.
Further, the stirrer is a stirring blade arranged on the rotating shaft.
From the above description, the stirring blade is used to stir the alcohol medium to be mixed and plays a role of pushing the medium to flow.
Furthermore, the liquid inlet pipe and the liquid outlet pipe are both heat-insulating hoses.
From the above description, it can be seen that the heat insulation hose is used to ensure the temperature stability of the alcohol medium during the transportation process.
Furthermore, a sealing rubber ring is arranged in the calibration hole.
From the above description, the sealing rubber ring plays a role of sealing and insulating.
Further, the motor and the micro alcohol pump are respectively connected with a power supply.
Furthermore, the side wall of the alcohol tank is provided with an interface for connecting a power line of the heater.
Referring to fig. 1, a first embodiment of the present invention is: a temperature sensor calibration device based on a refrigerant fluid medium comprises an alcohol tank 1 and a constant temperature calibration box 2, wherein a liquid inlet pipe 3 and a liquid outlet pipe 4 are arranged between the constant temperature calibration box 2 and the alcohol tank 1, a micro alcohol pump 5 is arranged between the liquid inlet pipe 3 and the alcohol tank 1, and the micro alcohol pump 5 is used for pumping absolute ethyl alcohol in the alcohol tank 1 into the constant temperature calibration box 2;
the inner cavity of the alcohol tank 1 is divided into a first cavity 12 and a second cavity 13 by a vertical partition plate 11, the liquid inlet pipe 3 and the liquid outlet pipe 4 are both connected with the first cavity 12, a rotating shaft 14 is vertically arranged in the second cavity 13, one end of the rotating shaft 14 penetrates through the top of the alcohol tank 1 and is connected with a motor 15, the other end of the rotating shaft 14 is provided with a stirrer 16, and a heater 17 is arranged in the second cavity 13 around the rotating shaft 14;
the calibration device is characterized in that a calibration hole 21 for inserting a temperature sensor to be calibrated is formed in the top of the constant temperature calibration box 2, a temperature thermocouple 22 and a temperature control thermocouple 23 are respectively installed at the bottom of an inner cavity of the constant temperature calibration box 2, one end of the temperature thermocouple 22 is in contact with absolute ethyl alcohol in the constant temperature calibration box 2, the other end of the temperature thermocouple 22 is connected with a temperature measuring instrument 24, one end of the temperature control thermocouple 23 is in contact with absolute ethyl alcohol in the constant temperature calibration box 2, the other end of the temperature control thermocouple 23 is connected with a temperature controller 25, and the temperature controller 25 is connected with a heater 17.
Referring to fig. 1, a second embodiment of the present invention is: a temperature sensor calibration device based on a refrigerant fluid medium comprises an alcohol tank 1 and a constant temperature calibration box 2, wherein a liquid inlet pipe 3 and a liquid outlet pipe 4 are arranged between the constant temperature calibration box 2 and the alcohol tank 1, a micro alcohol pump 5 is arranged between the liquid inlet pipe 3 and the alcohol tank 1, and the micro alcohol pump 5 is used for pumping absolute ethyl alcohol in the alcohol tank 1 into the constant temperature calibration box 2;
the inner cavity of the alcohol tank 1 is divided into a first cavity 12 and a second cavity 13 by a vertical partition plate 11, the liquid inlet pipe 3 and the liquid outlet pipe 4 are both connected with the first cavity 12, a rotating shaft 14 is vertically arranged in the second cavity 13, one end of the rotating shaft 14 penetrates through the top of the alcohol tank 1 and is connected with a motor 15, the other end of the rotating shaft 14 is provided with a stirrer 16, and a heater 17 is arranged in the second cavity 13 around the rotating shaft 14;
the calibration device is characterized in that a calibration hole 21 for inserting a temperature sensor to be calibrated is formed in the top of the constant temperature calibration box 2, a temperature thermocouple 22 and a temperature control thermocouple 23 are respectively installed at the bottom of an inner cavity of the constant temperature calibration box 2, one end of the temperature thermocouple 22 is in contact with absolute ethyl alcohol in the constant temperature calibration box 2, the other end of the temperature thermocouple 22 is connected with a temperature measuring instrument 24, one end of the temperature control thermocouple 23 is in contact with absolute ethyl alcohol in the constant temperature calibration box 2, the other end of the temperature control thermocouple 23 is connected with a temperature controller 25, and the temperature controller 25 is connected with a heater 17.
The heater 17 comprises a coil evaporator and a coil heater 17, and the temperature controller 25 is respectively connected with the coil evaporator and the coil heater 17. The stirrer 16 is a stirring blade mounted on the rotating shaft 14. The liquid inlet pipe 3 and the liquid outlet pipe 4 are both heat insulation hoses. And a sealing rubber ring is arranged in the calibration hole 21. The motor 15 and the micro alcohol pump 5 are respectively connected with a power supply. The side wall of the alcohol tank 1 is provided with an interface for connecting a power line of the heater 17.
In summary, the utility model provides a temperature sensor calibration device based on coolant fluid medium compared with the prior art, has advantages of miniaturization, portability, easy movement and installation, and can realize the on-site calibration of temperature sensor in high altitude or narrow space; through the drive of miniature alcohol pump, the alcohol medium flows fast between alcohol groove and constant temperature calibration case, realizes calibration chamber temperature's quick adjustment and stability, has high accuracy and homogeneity.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (7)
1. A temperature sensor calibration device based on a refrigerant fluid medium is characterized by comprising an alcohol tank and a constant-temperature calibration box, wherein a liquid inlet pipe and a liquid outlet pipe are arranged between the constant-temperature calibration box and the alcohol tank, a miniature alcohol pump is arranged between the liquid inlet pipe and the alcohol tank, and the miniature alcohol pump is used for pumping absolute ethyl alcohol in the alcohol tank into the constant-temperature calibration box;
the inner cavity of the alcohol tank is divided into a first cavity and a second cavity by a vertical partition plate, the liquid inlet pipe and the liquid outlet pipe are both connected with the first cavity, a rotating shaft is vertically arranged in the second cavity, one end of the rotating shaft penetrates through the top of the alcohol tank and is connected with a motor, the other end of the rotating shaft is provided with a stirrer, and a heater is arranged in the second cavity around the rotating shaft;
the calibration device comprises a constant-temperature calibration box, a temperature measuring thermocouple, a temperature control thermocouple, a temperature controller and a heater, wherein a calibration hole for inserting a temperature sensor to be calibrated is formed in the top of the constant-temperature calibration box, the bottom of an inner cavity of the constant-temperature calibration box is respectively provided with the temperature measuring thermocouple and the temperature control thermocouple, one end of the temperature measuring thermocouple is in contact with absolute ethyl alcohol in the constant-temperature calibration box, the other end of the temperature measuring thermocouple is connected with the temperature measurer, one end of the temperature control thermocouple is in contact with absolute ethyl alcohol in the constant-temperature calibration box, the other end of the temperature.
2. The refrigerant fluid medium-based temperature sensor calibration device as recited in claim 1, wherein the heater comprises a coil evaporator and a coil heater, and the temperature controller is connected to the coil evaporator and the coil heater, respectively.
3. The apparatus according to claim 1, wherein the stirrer is a stirring blade mounted on a rotating shaft.
4. The device of claim 1, wherein the inlet and outlet tubes are thermally insulated hoses.
5. The device of claim 1, wherein a sealing rubber ring is disposed in the calibration hole.
6. The chilled fluid medium-based temperature sensor calibration device of claim 1, wherein the motor and the micro alcohol pump are each connected to a power source.
7. The apparatus according to claim 1, wherein the side wall of the alcohol tank is provided with an interface for connecting a power line of the heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921855135.0U CN210664832U (en) | 2019-10-31 | 2019-10-31 | Temperature sensor calibrating device based on refrigerant fluid medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921855135.0U CN210664832U (en) | 2019-10-31 | 2019-10-31 | Temperature sensor calibrating device based on refrigerant fluid medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210664832U true CN210664832U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921855135.0U Expired - Fee Related CN210664832U (en) | 2019-10-31 | 2019-10-31 | Temperature sensor calibrating device based on refrigerant fluid medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870922A (en) * | 2022-05-19 | 2022-08-09 | 睿科集团(厦门)股份有限公司 | Full-automatic acidification appearance |
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2019
- 2019-10-31 CN CN201921855135.0U patent/CN210664832U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870922A (en) * | 2022-05-19 | 2022-08-09 | 睿科集团(厦门)股份有限公司 | Full-automatic acidification appearance |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200602 |