CN103162870B - System for verifying and calibrating temperature of air bath - Google Patents
System for verifying and calibrating temperature of air bath Download PDFInfo
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- CN103162870B CN103162870B CN201310077178.1A CN201310077178A CN103162870B CN 103162870 B CN103162870 B CN 103162870B CN 201310077178 A CN201310077178 A CN 201310077178A CN 103162870 B CN103162870 B CN 103162870B
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- 230000004087 circulation Effects 0.000 claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 239000003507 refrigerant Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000003556 assay Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000001839 systemic circulation Effects 0.000 claims description 2
- 238000012795 verification Methods 0.000 abstract description 8
- 238000009529 body temperature measurement Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000004164 analytical calibration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
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Abstract
The invention relates to a system for verifying and calibrating the temperature of air bath. According to the system, a front-stage circulating system and a rear-stage circulating system are adopted; the front-stage circulating system is a cold liquid circulating system; cold liquid in a cold liquid tank is cooled by using a cascade refrigerant compressor unit, and the circulation of low-temperature liquid is formed by a front-stage temperature-controlled instrument, a low-temperature circulating pump and a cold liquid circulating hose; the rear-stage circulating system is an air general circulation system; the general circulation of closed air is formed by a rear-stage temperature-controlled instrument, a verification work room, a lower conical body of the verification work room, an air circulating pipeline and a frequency conversion circulating fan; the front-stage circulating system and the rear-stage circulating system are subjected to heat exchange by a refrigerant exchanger; and the temperature of the front-stage circulating system and the temperature of the rear-stage circulating system are controlled by the two-stage temperature-controlled instruments respectively to form temperature difference of the system, and a difference value can be set according to a temperature value of a verification point. According to the system, a temperature field of the verification work room is uniform, and air is used as a verification medium, so that the system is suitable for the verification and calibration of a temperature sensor and a temperature measurement instrument which are not suitable for verifying and calibrating in the liquid tank, and can be used in scientific research and measurement laboratories.
Description
Technical field
The present invention relates to the assay calibration system to temperature sensor and temperature measuring instrument, what be specifically related to is that one utilizes air as calibrating medium, generation has wide temperature range, comparatively high stable and uniformity, and the temperature field that fluctuation degree is less, can to meteorological temperature sensor, and the temperature measurement instrument that can not carry out examining and determine and calibrating in liquid medium carries out the system of examining and determine and calibrating.
Background technology
At present to calibrating and the calibration of meteorological measuring temp measuring appratus and sensor, all carry out in factory or laboratory, the liquid such as general employing low temperature alcohol are as calibrating meson, form the temperature environment needed, adopt air as stability during calibrating meson and lack of homogeneity, general better equipment is also merely able to reach 0.5 DEG C, namely some equipment allow to reach higher stability requirement, also can only be at some temperature spots, and it is higher to environmental requirement, do not reach vertification regulation requirement, therefore existing assay calibration equipment has been not suitable with the demand of the thermometric instruments calibration that China increases sharply, in order to ensure meteorological automatic detection equipment and observing apparatus measurement data accurately and reliably, adapt to the demand of novel scope, be badly in need of the novel air bath temperature automatic Verification calibration system equipment that development is used in provincial test Indoor.
Summary of the invention
In order to solve the problem that prior art can not be calibrated part temperature sensor and temperature measurement instrument in liquid tank, the invention provides that a kind of temperature range is wide, temperature field is stable, evenly, fluctuation degree is little, utilize air as medium, can automatically control, can in laboratory to the system that meteorological thermometric instruments and sensor are examined and determine and calibrated.
Realize the object of the invention, the technical scheme taked is: air bath temperature assay calibration system, comprise: the cold fluid circulation of prime and rear class air great circulation system, front extremely cold fluid circulation, folded refrigeration compressor set is covered in employing makes the cold liquid in cold liquid pool lower the temperature, and makes cryogenic liquid form circulation by prime temperature controller, low-temperature circulating pump, cold liquid loop hose; Rear class is air great circulation system, forms airtight air systemic circulation by rear class temperature controller, calibration operation room, calibration operation room hypocentrum, air circulation duct, frequency conversion circulating fan; Its front stage temperature controls respectively by prime level temperature controller and rear class temperature controller, can form the temperature difference of a system, and this difference can set according to the temperature value of calibrating point, and can carry out regulation and control respectively; Front and back stages carries out exchange heat by refrigerant interchanger, refrigerant interchanger inside is provided with cold liquid interchanger coil pipe and rear class temperature controller heater strip, after in system, air circulation is got up, the temperature of cold liquid makes closed system air themperature reduce, and can make the temperature stabilization of calibration operation indoor on set point by rear class temperature controller.Calibration operation room adopts cylindrical structural design, and middle part is calibration operation section.Frequency conversion circulating fan has air rate adjustment controlling functions, and adjustable circulation wind speed is in needs scope.Front extremely cold fluid circulation is according to calibrating installation requirement, and the cold liquid temp covering folded refrigeration compressor set refrigeration can reach-70 DEG C.Cold liquid circulation between the cold fluid circulation of prime and rear class air great circulation system adopts stainless steel flexible hose to connect.The air circulating system outer surface of calibration operation room, refrigerant interchanger, air circulation duct, frequency conversion circulating fan composition all has heat-insulation layer.
The invention has the beneficial effects as follows: native system calibration operation indoor temperature field is even, stable, with air as calibrating medium, be applicable to the assay calibration to the temperature sensor that should not examine and determine in liquid tank and calibrate and temperature instrument, can use in scientific research and Measurement Laboratory.Because the cold fluid circulation of prime and rear class air great circulation system two circulatory systems carry out heat exchange by refrigerant parallel operation, two-stage temperature can carry out regulation and control respectively, to form the temperature difference of a system, this difference can set according to the temperature value of calibrating point, due to front stage temperature-controllable, decrease the heat exchange amount of air circulation system, make circulating current easy control of temperature, improve the temperature homogeneity in working region, calibration operation room and stability, overcome the impact because high-temperature difference and high power bring.
Accompanying drawing explanation
Fig. 1 is air bath temperature assay calibration system schematic.
Shown in figure: the cold fluid circulation of prime 1, rear class air great circulation system 2, cover folded refrigeration compressor set 3, cold night groove 4, prime temperature controller 5, low-temperature circulating pump 6, cold liquid loop hose 7, rear class temperature controller 8, calibration operation room 9, calibration operation room hypocentrum 10, refrigerant interchanger 11, air circulation duct 12, frequency conversion circulating fan 13.
Detailed description of the invention
The cold fluid circulation of prime is according to calibrating installation requirement, and the cold liquid temp covering folded refrigeration compressor set refrigeration can reach-70 DEG C.
Cold liquid pool 4 is built with cold liquid and refrigerating evaporator, refrigeration unit makes cold liquid cooling in groove by evaporimeter, by low-temperature circulating pump, cold liquid is circulated, thus form the circulation of cold liquid, its effect mainly makes the cold liquid in groove, by circulating pump 6, logical supercooled liquid loop hose 7, is transported in rear class air great circulation system verification system and carries out exchange heat through refrigerant interchanger 11.
The temperature of prime temperature controller 5 major control cold liquid pool 4, this temperature requires setting according to the setting of calibration operation point, generally lower than proving temperature point 10 ~ 15 DEG C, and keeps stable.
Rear class air great circulation system 2 is air great circulation systems, mainly by frequency conversion circulating fan 13, air circulation duct 12, refrigerant interchanger 11, calibration operation room 9, calibration operation room hypocentrum 10, by air circulation get up, at the recircilated air intake of calibration operation room 9, hypocentrum 10 is installed, its hypocentrum inside is provided with air-flow screens and rectification packing section, ensures that the uniform stream entering calibration operation indoor is stablized.
The air of the cold that the cold liquid of circulation brings by refrigerant interchanger 11 and air great circulation system carries out heat exchange, refrigerant interchanger inside is provided with interchanger coil pipe and rear class temperature controller heater strip, after in system, air circulation is got up, the temperature of cold liquid makes closed system air themperature reduce, can make temperature stabilization in air circulation system on set point by rear class temperature controller 8, when design temperature is higher than environment temperature, can low-temperature receiver be closed, utilize rear class temperature controller Heater Control System temperature.
Calibration operation room adopts cylindrical structural, eliminates dead angle, is provided with air-flow screens and rectification packing section in hypocentrum part, ensure that temperature field is stable, even.
Circulation air rate adjustment is completed by frequency conversion circulating fan and frequency converter, reaches the technical requirement that temperature is regulated the speed and stablized reading.
Cold liquid circulation between the cold fluid circulation of prime and rear class air great circulation system adopts stainless steel flexible hose to connect.
Opening the door before establishing in calibration operation room 9, can conveniently pick and place calibrating instrument and equipment.
The air great circulation system outer surface of calibration operation room, refrigerant interchanger, air circulation duct, frequency conversion circulating fan composition all has heat-insulation layer.
The key technical indexes:
Temperature range: the scope of proving temperature-50 ~+60 DEG C
Calibrating case swept volume of a single chamber: > 40 liters,
Operating room's inner bag adopts cylindrical structural, size φ 400X500mm.
Temperature-controlled precision: ± 0.1 DEG C.
Temperature field uniformity: ± 0.1 DEG C (active section horizontal plane).
Temperature fluctuation: ± 0.1 DEG C (in active section).
Circulation wind speed: be less than 1.7m/s.
Concrete assay calibration process:
The inspection of tested sensor and temperature instrumentation and the preparation before examining and determine is carried out according to regulatory requirements, open calibration operation room door, by being put into by test examination instrument on the special calibrating dial framework of calibration operation indoor (generally once can mounting temperature sensor 1 ~ 7), signal cable is connected to calibration operation outdoor, calibration operation room, light pass door;
Press general supply key, equipment power-on, general supply key indicator lamp is bright, and each system switches on power;
First by the cold fluid circulation temperature of prime temperature controller setting prime, generally should lower than inspection set point temperature 10 ~ 15 DEG C, the calibrating point that temperature is lower, difference should be larger;
Setting variable-frequency governor controlled circulation wind speed, to needs numerical value, is less than 1.7m/s;
By rear class temperature controller setting calibration operation room temperature angle value to inspection set point temperature, startup optimization, system then runs to calibrating point automatically, and stable;
Then reading data can be carried out when stabilization time;
After completing a calibrating point, can continue to do next point;
When examining and determine some temperature value higher than environment temperature 10 DEG C, the calibrating that cold source system carries out high-temperature point can be closed;
Calibrating terminates can power cutoff switch, opens calibration operation room door and takes out instrument.
Claims (6)
1. an air bath temperature assay calibration system, comprise: the cold fluid circulation of prime and rear class air great circulation system, it is characterized in that: adopt forward and backward two stage cycle system, prime is cold fluid circulation, folded refrigeration compressor set (3) is covered in employing makes the cold liquid in cold liquid pool (4) lower the temperature, and makes cryogenic liquid form circulation by prime temperature controller (5), low-temperature circulating pump (6), cold liquid loop hose (7); Rear class is air great circulation system, forms airtight air systemic circulation by rear class temperature controller (8), calibration operation room (9), calibration operation room hypocentrum (10), air circulation duct (12), frequency conversion circulating fan (13); Its front stage temperature controls respectively by prime temperature controller (5) and rear class temperature controller (8), forms the temperature difference of a system, and this difference sets according to the temperature value of calibrating point, and carries out regulation and control respectively; Front and back stages carries out exchange heat by refrigerant interchanger (11), refrigerant interchanger (11) inside is provided with cold liquid interchanger coil pipe and rear class temperature controller heater strip, after in system, air circulation is got up, the temperature of cold liquid makes closed system air themperature reduce, and makes temperature stabilization in calibration operation room (9) on set point by rear class temperature controller.
2. a kind of air bath temperature assay calibration system according to claim 1, it is characterized in that: calibration operation room (9) adopt cylindrical structural design, middle part is calibration operation section, be connected with calibration operation room hypocentrum (10) at calibration operation room recircilated air intake, in hypocentrum part, air-flow screens and rectification packing section be installed.
3. a kind of air bath temperature assay calibration system according to claim 1, is characterized in that: frequency conversion circulating fan (13) has air rate adjustment to control, can adjust circulation wind speed in needs scope.
4. a kind of air bath temperature assay calibration system according to claim 1, is characterized in that: the cold fluid circulation of prime is according to calibration operation technical requirement, and the cold liquid temp covering folded refrigeration compressor set refrigeration can reach-70 DEG C.
5. a kind of air bath temperature assay calibration system according to claim 1, is characterized in that: the cold liquid circulation between the cold fluid circulation of prime and rear class air great circulation system adopts stainless steel flexible hose to connect, and is convenient to installation and transportation and reduces noise.
6. a kind of air bath temperature assay calibration system according to claim 1, is characterized in that: the air circulation system outer surface of calibration operation room, refrigerant interchanger, air circulation duct, frequency conversion circulating fan composition all has heat-insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310077178.1A CN103162870B (en) | 2013-03-12 | 2013-03-12 | System for verifying and calibrating temperature of air bath |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310077178.1A CN103162870B (en) | 2013-03-12 | 2013-03-12 | System for verifying and calibrating temperature of air bath |
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| Publication Number | Publication Date |
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| CN103162870A CN103162870A (en) | 2013-06-19 |
| CN103162870B true CN103162870B (en) | 2015-04-29 |
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| CN201310077178.1A Expired - Fee Related CN103162870B (en) | 2013-03-12 | 2013-03-12 | System for verifying and calibrating temperature of air bath |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110887526A (en) * | 2019-12-04 | 2020-03-17 | 湖州唯立仪表厂 | High-precision temperature and humidity detection box capable of automatically proportioning dry air flow and wet air flow |
| CN112903145B (en) * | 2021-03-31 | 2022-12-06 | 中国电子科技集团公司第十三研究所 | Method and device for calibrating on-chip temperature parameters of high-temperature and low-temperature probe station |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506600A (en) * | 2006-07-19 | 2009-08-12 | 艾默生环境优化技术有限公司 | Protection and diagnostic module for a refrigeration system |
| CN201402251Y (en) * | 2009-04-28 | 2010-02-10 | 上海建科检验有限公司 | Testing plant for simulating temperature |
| CN102472509A (en) * | 2009-07-06 | 2012-05-23 | 迪吉特数码科技工贸有限公司 | Climate simulation system with cold accumulation technology |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001019519A1 (en) * | 1999-09-16 | 2001-03-22 | Mirai Electronics Ab | A climatic test chamber system and a method for the operation thereof |
| JP4897850B2 (en) * | 2009-04-03 | 2012-03-14 | 株式会社トーエネック | Cooling tower performance evaluation system for air conditioning |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506600A (en) * | 2006-07-19 | 2009-08-12 | 艾默生环境优化技术有限公司 | Protection and diagnostic module for a refrigeration system |
| CN201402251Y (en) * | 2009-04-28 | 2010-02-10 | 上海建科检验有限公司 | Testing plant for simulating temperature |
| CN102472509A (en) * | 2009-07-06 | 2012-05-23 | 迪吉特数码科技工贸有限公司 | Climate simulation system with cold accumulation technology |
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Inventor after: Li Minghao Inventor after: Sun Wenliang Inventor after: Che Shengli Inventor after: Sun Qiuning Inventor after: Sha Li Inventor after: Sun Yanyun Inventor after: Liu Yuan Inventor after: Yang Xiwang Inventor after: Yu Wenbo Inventor after: Ren Defa Inventor before: Li Minghao Inventor before: Sun Qiuning Inventor before: Sha Li Inventor before: Sun Yanyun Inventor before: Liu Yuan Inventor before: Yang Xiwang Inventor before: Yu Wenbo Inventor before: Ren Defa Inventor before: Sun Wenliang |
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Free format text: CORRECT: INVENTOR; FROM: LI MINGHAO SUN QIUNING SHA LI SUN YANYUN LIU YUAN YANG XIWANG YU WENBO REN DEFA SUN WENLIANG TO: LI MINGHAO CHE SHENGLI SUN QIUNING SHA LI SUN YANYUN LIU YUAN YANG XIWANG YU WENBO REN DEFA SUN WENLIANG |
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Owner name: SHENYANG XINLI NEW INFORMATION TECHNOLOGY CO., LTD Effective date: 20150210 |
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Effective date of registration: 20150210 Address after: 110015 No. 153 Youth Street, Shenhe District, Liaoning, Shenyang Applicant after: Liaoning Provincial Meteorological Equipment Assurance Center Applicant after: Shenyang Xinli New Information Technology Co., Ltd. Address before: 110015 No. 153 Youth Street, Shenhe District, Liaoning, Shenyang Applicant before: Liaoning Provincial Meteorological Equipment Assurance Center |
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