CN111307337B - Forced air circulation temperature calibration device - Google Patents
Forced air circulation temperature calibration device Download PDFInfo
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- CN111307337B CN111307337B CN202010090168.1A CN202010090168A CN111307337B CN 111307337 B CN111307337 B CN 111307337B CN 202010090168 A CN202010090168 A CN 202010090168A CN 111307337 B CN111307337 B CN 111307337B
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- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
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Abstract
The invention provides a forced air circulation temperature calibration device, which comprises: the air conditioner comprises a body, a control unit and a signal processing and temperature display unit, wherein an annular section air duct is formed between the heat insulation shell and the inner barrel, air flows downwards along the annular section air duct, flows into the bottom of the inner barrel and flows through the inner space of the inner barrel from bottom to top, after the gas is controlled by the temperature adjusting module, the gas performs forced convection heat exchange with the temperature control module, the sensor bracket, the standard temperature sensor and the temperature sensor to be calibrated, the signal processing and temperature display unit is used for acquiring and recording temperature parameters of the standard temperature sensor and the temperature sensor to be calibrated, and utilizes a built-in program, the standard temperature sensor and the temperature value of the temperature sensor to be calibrated are calibrated, and the size and specification of the temperature sensor in the forced air circulation temperature calibration device are not limited, so that the forced air circulation temperature calibration device is suitable for temperature sensors with various shapes and specifications.
Description
Technical Field
The invention relates to the technical field of temperature detection, in particular to a forced air circulation temperature calibration device.
Background
The dry-type temperature metering furnace is widely applied to field metering and calibration of the temperature sensor, has the advantages of small volume and light weight, is convenient to carry compared with a constant temperature bath, is short in time consumption of temperature rise and temperature reduction and fast in temperature convergence, and is widely applied to industrial fields and scientific research work.
The existing dry-type metering furnace mostly adopts a temperature equalizing block made of red copper and other materials as a constant temperature structure, which is beneficial to improving the temperature control precision and the uniformity of a temperature field, for example, patents CN209559370U, CN105865632A, CN108917939A and the like, a standard temperature sensor and a temperature sensor to be calibrated are placed in a hole of a copper block, the size of the hole is matched with the size of the temperature sensor, so that errors caused by factors such as thermal contact resistance are reduced.
However, the temperature sensors used in industrial fields or laboratories have numerous models and numerous types of overall dimensions, and the holes of the copper block are generally processed in advance and are difficult to exactly correspond to the overall dimensions of the temperature sensor to be calibrated, so that the temperature sensor cannot be inserted or the gap is too large after the temperature sensor is inserted, and the calibration precision is affected.
When a liquid bath type constant temperature structure is adopted, the temperature sensor to be calibrated is immersed in the liquid bath, the limitation of the overall dimension is small, but on one hand, the liquid bath is inconvenient to use, and on the other hand, the problem that the liquid bath is solidified to separate out solids when the temperature sensor works at a low temperature (such as below 150 ℃ below zero) is solved. And the gas forced air circulation constant temperature structure is adopted, so that the problem of low-temperature solidification of the liquid bath can be avoided, the use is relatively convenient, and the size limitation of the temperature sensor is small.
Disclosure of Invention
Therefore, there is a need to provide a forced air circulation temperature calibration device that can accurately calibrate a temperature sensor and can be applied to various types of temperature sensors, in order to overcome the drawbacks of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a forced air circulation temperature calibration device, which comprises: body, the control unit, signal processing and temperature display unit, wherein:
the body includes: the temperature sensor comprises a heat insulation shell, a heat insulation outer cover, an inner cylinder and an inner cover, wherein the inner cylinder and the inner cover are arranged in the heat insulation shell;
the gas flows out from the gas flow outlet, flows downwards along the annular section air duct, flows into the bottom of the inner barrel and flows through the inner space of the inner barrel from bottom to top, and performs forced convection heat exchange with the temperature control module, the sensor bracket, the standard temperature sensor and the temperature sensor to be calibrated;
the fan at the bottom of the inner barrel is driven by a variable frequency motor, and the gas can flow downwards along the annular section air duct to flow into the bottom of the inner barrel and flow through the inner space of the inner barrel from bottom to top under the drive of the variable frequency motor.
The temperature control module comprises a refrigerating machine cold output end, a smooth uniform structure and an electric heater, the temperature adjusting module is arranged in the inner cylinder and is positioned below the sensor support, and the temperature adjusting module can control the temperature of gas flowing through; the temperature control module is arranged on the sensor support, and a flow field uniform structure is arranged between the temperature control module and the sensor support and can be used for homogenizing a gas flow field and temperature distribution.
The temperature sensors to be calibrated and the standard temperature sensors are both arranged on the sensor bracket, one of the standard temperature sensors is arranged at the axis of the inner cylinder, and the rest standard temperature sensors are distributed in a symmetrical array around the axis of the inner cylinder.
The body is internally provided with a channel of a temperature sensor lead, one end of the temperature sensor lead is connected with the signal processing and temperature display unit, and the other end of the temperature sensor lead is connected with the standard temperature sensor and the temperature sensor to be calibrated.
The control unit can adjust the heating quantity of the electric heater and the refrigerating quantity input by the refrigerator, and realize the accurate control of the temperature of the gas in the body.
The signal processing and temperature display unit is used for acquiring and recording temperature parameters of the standard temperature sensor and the temperature sensor to be calibrated, and calibrating through the temperature values of the standard temperature sensor and the temperature sensor to be calibrated by using a built-in program.
In some preferred embodiments, a liquid nitrogen flow channel is arranged inside the temperature control module, and the liquid nitrogen flow channel is communicated with an external liquid nitrogen injection port by using liquid nitrogen for refrigeration.
In some preferred embodiments, the heat insulating outer shell is provided with a gas injection port through which nitrogen, argon or helium gas is injected into the inner space of the body and a gas discharge port.
In some preferred embodiments, an adsorbent-desiccant carrier is disposed within the annular-section air duct, and the adsorbent-desiccant carrier may be filled with activated carbon, silica gel, or molecular sieves for removing water or carbon dioxide from the gas.
In some preferred embodiments, a cold-trapping plate is arranged in the annular section air duct, and the cold-trapping plate is used for removing water or carbon dioxide in gas by condensation after being cooled by the cold output end of the refrigerating machine, so that the surface of the temperature sensor is prevented from frosting.
In some preferred embodiments, a sealing ring and a fastening structure are arranged between the heat-insulating outer shell and the heat-insulating outer cover to ensure the pressure-bearing sealing of the inner cavity, and the inner surface of the heat-insulating outer cover is provided with a pressure-resistant terminal, one end of the pressure-resistant terminal is connected with the standard temperature sensor and the temperature sensor to be calibrated, and the other end of the pressure-resistant terminal is connected with the signal processing and temperature display unit; the fan and the variable frequency motor are driven by magnetic force; and protective gas such as positive pressure helium or neon is filled in the body and is used for calibrating a temperature sensor below a liquid nitrogen temperature zone.
In some preferred embodiments, the fan and the variable frequency motor are driven by magnetic force.
The invention adopts the technical scheme that the method has the advantages that:
the forced air circulation temperature calibration device provided by the invention utilizes gas and the temperature sensor to be calibrated to perform forced convection heat exchange, and compared with the situation that the size specification of the temperature sensor in the traditional copper block constant temperature structure is limited by the hole of the copper block, the size specification of the temperature sensor in the forced air circulation temperature calibration device is not limited, and the forced air circulation temperature calibration device is suitable for temperature sensors with various shapes and specifications.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a forced air circulation temperature calibration device provided in embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a forced air circulation temperature calibration device according to embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, a forced air circulation and forced air circulation temperature calibration apparatus provided in embodiment 1 of the present invention includes: body, the control unit, signal processing and temperature display unit, wherein:
the body includes: adiabatic shell 4, adiabatic enclosing cover 1, set up in inner tube 5 and inner cup 2 in the adiabatic shell 4, adiabatic shell 4 with adiabatic enclosing cover 1 cooperation forms first seal chamber, the cooperation of inner tube 5 and inner cup 2 forms second seal chamber.
It can be understood that by adopting the structure, the sealing effect can be better achieved, and the heat preservation function can be better realized.
An annular section air duct M is formed between the heat insulation shell 4 and the inner cylinder 5, the side edge of the upper part of the inner cylinder 5 is symmetrically provided with an airflow outlet 3, the lower part of the inner cylinder 5 is provided with a sensor support 6, and a plurality of standard temperature sensors 15 and a temperature sensor 14 to be calibrated are placed in the sensor support 6.
The temperature adjusting module 8 is internally integrated with an electric heater and a refrigerating machine cold output end and is controlled and adjusted by the control unit; the temperature adjusting module 8 is arranged in the inner barrel 5 and is positioned below the sensor bracket 6; the tempering module 8 may control the temperature of the gas flowing through.
The refrigerating machine cold output end in the temperature adjusting module 8 is connected with the refrigerating machine 16; the refrigerator 16 can adopt G-M, Stirling, pulse tube, mixed working medium throttling and other refrigerators, and can also adopt a conventional vapor compression refrigerator.
The temperature adjusting module 8 and the sensor support 6 are arranged in a flow field uniform structure 7, and the flow field uniform structure 7 can be used for uniformly distributing a gas flow field and temperature.
The forced air circulation temperature calibration device provided by the above embodiment 1 of the present invention has the following working method:
the gas at the bottom of the inner cylinder 5 flows through the inner space of the inner cylinder 5 from bottom to top under the driving of the fan 9, the gas performs forced convection heat exchange with the temperature adjusting module 8, the sensor support 6, the standard temperature sensor 15 and the temperature sensor 14 to be calibrated, then the gas flows out from the gas flow outlet 3, flows downwards along the annular section air duct M and returns to the bottom of the inner cylinder 5, and the circulation is completed.
The control unit 13 can adjust the heating capacity of the electric heater inside the temperature adjusting module 8 and the refrigerating capacity input by the refrigerator 16 to accurately control the temperature of the gas flowing through.
In some preferred embodiments, one of the standard temperature sensors 15 is disposed at the axis of the inner barrel 5, and the rest of the standard temperature sensors 15 are distributed in a symmetrical array around the axis of the inner barrel 5.
It can be understood that the sensor bracket 6 has a large internal space, and can flexibly place temperature sensors with various shapes and specifications.
A channel of a temperature sensor lead 11 is arranged in the body, one end of the temperature sensor lead 11 is connected with the signal processing and temperature display unit, and the other end of the temperature sensor lead 11 is connected with a standard temperature sensor 15 and a temperature sensor 14 to be calibrated.
The signal processing and temperature display unit is used for acquiring and recording temperature parameters of the standard temperature sensor 15 and the temperature sensor 14 to be calibrated, and calibrating the temperature values of the standard temperature sensor 15 and the temperature sensor 14 to be calibrated by using a built-in program.
In some preferred embodiments, the fan 9 is driven by a variable frequency motor 10, the variable frequency motor 10 rotates at full speed when the body is at a temperature varying process, and the variable frequency motor 10 rotates at low speed when the body is at a temperature precisely controlled to a certain temperature.
In some preferred embodiments, the sensor support 6, the flow field uniform structure 7 and the temperature adjustment module 8 are machined from a single metal piece or 3D printed, so that the structure is more compact, and heat or cooling can be transferred to the standard temperature sensor 15 and the temperature sensor 14 to be calibrated through two ways of forced gas convection and heat conduction.
In some preferred embodiments, an adsorption desiccant support is disposed inside the annular cross-section air duct M, and may be filled with, but not limited to, adsorbents and desiccants such as activated carbon, silica gel, and molecular sieves, so as to remove components such as water and carbon dioxide from the gas, prevent the components from condensing or frosting on components such as the temperature sensor to form a thermal resistance, and prevent the thermal resistance from affecting calibration of the temperature sensor or blocking the gas flow passage of the temperature regulating module 8.
In some preferred embodiments, the annular section air duct M is provided with a capturing cold plate 24, which removes components such as water and carbon dioxide in the air by freezing, so as to prevent the components from condensing or frosting on components such as the temperature sensor, and the like, and thus the calibration of the temperature sensor is affected or the air flow passage of the temperature regulating module 8 is blocked.
The forced air circulation temperature calibration device for forced air circulation adopts a special forced air circulation design, utilizes gas forced convection to transfer heat, cools or heats the temperature sensor, and is not limited in size and suitable for temperature sensors with various shapes and specifications.
Example 2
Referring to fig. 2, a schematic structural diagram of a forced air circulation temperature calibration apparatus according to embodiment 2 of the present invention is shown, and for convenience of description, only related drawings are described below.
The difference from the above embodiment 1 is that in the forced air circulation temperature calibration device provided in embodiment 2 of the present invention, a sealing ring 22 and a fastening structure 23 are provided between the heat insulation outer shell 4 of the body and the heat insulation outer cover 1 to ensure the sealing of the internal cavity.
The difference from the above embodiment 1 is that in the forced air circulation temperature calibration apparatus provided in embodiment 2 of the present invention, the heat insulating outer shell 4 is provided with a gas inlet 18 and a gas outlet 17, and nitrogen, argon or helium gas can be injected into the inner space of the main body through the gas inlet 18.
The difference from the above embodiment 1 is that in the forced air circulation temperature calibration device provided in embodiment 2 of the present invention, the heat insulating outer cover 1 is provided with a pressure-resistant plug 20, the outer side of the pressure-resistant plug 20 is connected to the signal processing and temperature display unit, and the inner side of the pressure-resistant plug 20 is connected to the temperature sensor terminal 21.
In some preferred embodiments, the fan 9 is driven by the inverter motor 10 via a magnetic drive 19.
It can be understood that the forced air circulation temperature calibration device provided in the above embodiment 2 should be purged and replaced with the shielding gas before use to discharge the impurities such as water vapor and carbon dioxide contained in the original gas of the body, so as to avoid frosting.
Other working modes can refer to embodiment 1, and are not described herein.
The forced air circulation temperature calibration device for forced air circulation adopts a special forced air circulation design, utilizes gas forced convection to transfer heat, cools or heats the temperature sensor, and the size of the temperature sensor to be calibrated is not limited, so that the device is suitable for temperature sensors with various shapes and specifications; meanwhile, positive pressure helium is adopted as protective gas, so that the frosting problem can be solved, the temperature calibration precision is improved, and the temperature calibration method can be well suitable for temperature calibration below the liquid nitrogen temperature of 77K.
It is to be understood that various features of the above-described embodiments may be combined in any combination, and for the sake of brevity, all possible combinations of features in the above-described embodiments may not be described in detail, but rather, all combinations of features may be considered to fall within the scope of the present disclosure unless there is a conflict between such combinations.
Of course, the positive electrode material of the forced air circulation temperature calibration device of the present invention may have various changes and modifications, and is not limited to the specific structure of the above embodiments. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (6)
1. A forced air circulation temperature calibration device, comprising: body, the control unit, signal processing and temperature display unit, wherein:
the body includes: the temperature sensor comprises a heat insulation shell, a heat insulation outer cover, an inner cylinder and an inner cover, wherein the inner cylinder and the inner cover are arranged in the heat insulation shell;
the gas flows out from the gas flow outlet, flows downwards along the annular section air duct, flows into the bottom of the inner barrel and flows through the inner space of the inner barrel from bottom to top, and the gas performs forced convection heat exchange with the temperature adjusting module, the sensor bracket, the standard temperature sensor and the temperature sensor to be calibrated;
the fan is driven by a variable frequency motor, and the air can flow downwards along the annular section air duct, flow into the bottom of the inner barrel and flow through the inner space of the inner barrel from bottom to top under the drive of the variable frequency motor;
the temperature adjusting module comprises a refrigerating machine cold output end, a flow field uniform structure and an electric heater, and is arranged in the inner cylinder and can control the temperature of gas flowing through; the gas temperature sensor also comprises a flow field uniform structure which is arranged between the temperature adjusting module and the sensor bracket and can be used for uniformly distributing a gas flow field and temperature;
the temperature sensors to be calibrated and the standard temperature sensors are both arranged on the sensor bracket, one of the standard temperature sensors is arranged at the axis of the inner cylinder, and the rest standard temperature sensors are distributed around the axis of the inner cylinder in a symmetrical array;
a channel of a temperature sensor lead is arranged in the body, one end of the temperature sensor lead is connected to the signal processing and temperature display unit, and the other end of the temperature sensor lead is connected with a standard temperature sensor and a temperature sensor to be calibrated;
the control unit can adjust the heating quantity of the electric heater and the refrigerating quantity input by the refrigerator, and realize the accurate control of the temperature of the gas in the body;
the signal processing and temperature display unit is used for acquiring and recording temperature parameters of the standard temperature sensor and the temperature sensor to be calibrated, and calibrating through the temperature values of the standard temperature sensor and the temperature sensor to be calibrated by using a built-in program.
2. The forced air circulation temperature calibration device according to claim 1, wherein a liquid nitrogen flow channel is arranged inside the temperature regulation module, and is refrigerated by liquid nitrogen, and the liquid nitrogen flow channel is communicated with an external liquid nitrogen injection port.
3. The forced air circulation temperature calibration device according to claim 1, wherein the heat insulating outer case is provided with a gas injection port through which nitrogen, argon or helium gas can be injected into the inner space of the body and a gas discharge port.
4. The forced air circulation temperature calibration device according to claim 1, wherein an adsorption drying agent bracket is arranged in the annular section air duct, and the adsorption drying agent bracket can be filled with activated carbon, silica gel or molecular sieve for removing water or carbon dioxide in the air and avoiding frosting on the surface of the temperature sensor.
5. The forced air circulation temperature calibration device according to claim 1, wherein a cold-trapping plate is arranged in the annular section air duct, and the cold-trapping plate is used for removing water or carbon dioxide in air by condensation after being cooled by the cold output end of the refrigerating machine, so as to avoid frosting on the surface of the temperature sensor.
6. The forced air circulation temperature calibration device according to claim 1, wherein a sealing ring and a fastening structure are arranged between the heat insulation shell and the heat insulation outer cover to ensure pressure-bearing sealing of the inner cavity, a pressure-resistant plug is arranged on the inner surface of the heat insulation outer cover, one end of the pressure-resistant plug is connected with the standard temperature sensor and the temperature sensor to be calibrated, and the other end of the pressure-resistant plug is connected with the signal processing and temperature display unit; the body is filled with positive pressure helium or neon gas for calibrating a temperature sensor below a liquid nitrogen temperature zone.
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| CN202010090168.1A CN111307337B (en) | 2020-02-13 | 2020-02-13 | Forced air circulation temperature calibration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4148405A1 (en) * | 2021-09-08 | 2023-03-15 | Ametek Denmark A/s | System for calibrating a sensor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112285452B (en) * | 2020-09-10 | 2023-03-03 | 河北工业大学 | Device and method for measuring low-temperature characteristics of electrical parameters |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245434A (en) * | 2013-04-10 | 2013-08-14 | 中国科学院理化技术研究所 | Dividing device of thermometer |
| CN203287124U (en) * | 2013-04-10 | 2013-11-13 | 中国科学院理化技术研究所 | Three-phase point reproduction device using refrigerating machine as cold source |
| CN108139165A (en) * | 2015-10-16 | 2018-06-08 | 脱其泰有限责任公司 | Temperature control portable refrigeration unit |
| CN108955098A (en) * | 2018-08-16 | 2018-12-07 | 中国科学院理化技术研究所 | A kind of cryogenic system of integrated constant temperature, cooling and vacuum freeze-drying |
| CN109238514A (en) * | 2018-09-03 | 2019-01-18 | 浙江大学 | The low temperature thermocouple caliberating device of one kind 77 ~ 90K warm area |
| CN110017914A (en) * | 2018-01-09 | 2019-07-16 | 北京康斯特仪表科技股份有限公司 | Flow-guiding radiation stem body temperature checker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7269991B2 (en) * | 2003-02-14 | 2007-09-18 | Air Liquide America L.P. | Permeation calibrator |
-
2020
- 2020-02-13 CN CN202010090168.1A patent/CN111307337B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245434A (en) * | 2013-04-10 | 2013-08-14 | 中国科学院理化技术研究所 | Dividing device of thermometer |
| CN203287124U (en) * | 2013-04-10 | 2013-11-13 | 中国科学院理化技术研究所 | Three-phase point reproduction device using refrigerating machine as cold source |
| CN108139165A (en) * | 2015-10-16 | 2018-06-08 | 脱其泰有限责任公司 | Temperature control portable refrigeration unit |
| CN110017914A (en) * | 2018-01-09 | 2019-07-16 | 北京康斯特仪表科技股份有限公司 | Flow-guiding radiation stem body temperature checker |
| CN108955098A (en) * | 2018-08-16 | 2018-12-07 | 中国科学院理化技术研究所 | A kind of cryogenic system of integrated constant temperature, cooling and vacuum freeze-drying |
| CN109238514A (en) * | 2018-09-03 | 2019-01-18 | 浙江大学 | The low temperature thermocouple caliberating device of one kind 77 ~ 90K warm area |
Non-Patent Citations (2)
| Title |
|---|
| 一种比定容热容测量装置;钟权 等;《化工学报》;20191231;第70卷(第S2期);20-24 * |
| 基于G-M低温制冷机的低温温度计标定系统;翁捷敏 等;《低温技术》;20180415;第41卷(第2期);5-10 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4148405A1 (en) * | 2021-09-08 | 2023-03-15 | Ametek Denmark A/s | System for calibrating a sensor |
| WO2023036816A1 (en) * | 2021-09-08 | 2023-03-16 | Ametek Denmark A/S | System for calibrating a sensor |
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