CN201740753U - Double-cooling type dew-point instrument - Google Patents
Double-cooling type dew-point instrument Download PDFInfo
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- CN201740753U CN201740753U CN2010202522874U CN201020252287U CN201740753U CN 201740753 U CN201740753 U CN 201740753U CN 2010202522874 U CN2010202522874 U CN 2010202522874U CN 201020252287 U CN201020252287 U CN 201020252287U CN 201740753 U CN201740753 U CN 201740753U
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- dew point
- minute surface
- refrigeration system
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Abstract
The utility model belongs to the technical field of humidity metering and testing, and relates to a double-cooling type dew-point instrument, which comprises a mirror-surface dew-point testing system and a refrigeration system, wherein the refrigeration system comprises a thermoelectric refrigeration system, a compressor refrigeration system and a display and control system; and the mirror surface (1) of the mirror-surface dew-point testing system is connected with the cold end of a thermoelectric refrigerator (3) through a heat-conducting basal body (2), the hot end of the thermoelectric refrigerator (3) is connected with the evaporator (4) of the compressor refrigeration system, and the display and control system is used for receiving the data information from the testing system and controlling the refrigeration speed through data processing. The double-cooling type dew-point instrument related by the utility model has simple structure and convenient installation and operation, adopts a multistage refrigerating mode, has large refrigerating capacity and high refrigerating efficiency and is particularly suitable for low-dew-point gas humidity measurement.
Description
One, technical field
The utility model belongs to the metrological testing technology field, relates to the psychrometry technical field of measurement and test, particularly the chilled-mirror type dew point instrument metrological testing technology.
Two, background technology
Dew point hygrometer is a large amount of gas humidity surveying instruments that use of industries such as chemical industry, electric power, machinery, weaving, electronics, military project.Its principle of work is varied, chilled-mirror type, resistance-capacitance type, electrolytic, spectrum formula etc. are arranged, chilled-mirror type dew point instrument can directly be traceable to basic dimension with its working stability, accuracy of measurement height, measured value, occupy critical role in moisture measurement, the important performance of its work is to characterize by the refrigerating capacity to minute surface.
ZL 200620113939.X discloses a kind of chilled-mirror type dew point instrument trace damping device, and it is made of on-off circuit, solenoid valve, the three-port structure spare of control electromagnetic valve action; Action by control electromagnetic valve, in good time, in right amount to dew point hygrometer sensing chamber trace humidification, make the Cold Mirrors face moment in the dew point hygrometer supersaturation of water vapor trace occur, thereby improve water crystallization speed, under equal refrigeration condition, reduce cooling overshoot temperature,, shorten detection time to low temperature direction expansion sensing range.Do not relate to refrigerating capacity and adjust problem.
Three, summary of the invention
The utility model is a purpose to improve the dew point hygrometer refrigerating efficiency and to expand the dew point measurement range, and a kind of dual-cooling type dew point hygrometer is provided.
The purpose of this utility model is achieved in that and adopts dual refrigeration modes to realize deep refrigerating, adopts the compression refrigeration mode to cool off the thermoelectric refrigerating unit hot junction; Adopt multistage thermoelectric cooling mode to cool off minute surface, the filling heat-conducting silicone grease guarantees good heat-conductive characteristic between refrigeration systems at different levels, reaches the purpose of fast-refrigerating.
The dual-cooling type dew point hygrometer that the utility model relates to is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: refrigeration system is made up of thermoelectric cooling system, compressor refrigeration system and demonstration and control system; The minute surface 1 of minute surface dew point testing system links to each other with the cold junction of thermoelectric refrigerating unit 3 by heat conduction substrate 2, the hot junction of thermoelectric refrigerating unit 3 links to each other with compressor refrigeration system evaporator 4, show the data message that receives self-testing system with control system, by the data processing and control refrigerating speed, basic structure as shown in Figure 1.
The dual-cooling type dew point hygrometer that the utility model relates to is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: described minute surface 1 is the copper sheet of band transition metal coating.
The dual-cooling type dew point hygrometer that the utility model relates to is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: the coating of described minute surface 1 is selected from a kind of in chromium, platinum or the platinum lawrencium alloy.
The dual-cooling type dew point hygrometer that the utility model relates to is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: a kind of in circle or the regular polygon of described minute surface 1.
The dual-cooling type dew point hygrometer that the utility model relates to is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: described heat conduction substrate 2 is brass ingot.
The dual-cooling type dew point hygrometer that the utility model relates to is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: described thermoelectric refrigerating unit 3 is multi-stage refrigerating.
The dual-cooling type dew point hygrometer that the utility model relates to is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: described thermoelectric refrigerating unit 3 is 3～5 grades of refrigeration.
The dual-cooling type dew point hygrometer that the utility model relates to is simple in structure, fitting operation convenient, adopts the multi-stage refrigerating mode, and refrigerating capacity is big, and the refrigerating efficiency height is particularly suitable for low dew point gas humidity and measures.
Four, description of drawings
Accompanying drawing 1 cold type dew point hygrometer basic structure synoptic diagram
The 1-minute surface; The 2-heat conduction substrate; The 3-thermoelectric refrigerating unit; 4-compressor refrigeration system evaporator; The 5-compressor; The 6-platinum-resistance thermometer; Control of 7-dew point hygrometer and display system; The 8-measuring chamber; The 9-photoelectron emission device; The 10-photoelectric receiving arrangement.
Five, specific embodiments
Below in conjunction with specific embodiment the technical scheme that the utility model relates to is described in further detail, but not as the restriction to technical scheme.
A kind of three grades of thermoelectric cooling dual-cooling type dew point hygrometers, structure as shown in Figure 1.
Minute surface dew point testing system is made up of minute surface, platinum-resistance thermometer, measuring chamber, photoelectron emission device, photoelectric receiving arrangement and control and display system.Minute surface 1 is the circular chromium-plated brass of radius 0.5cm; Heat conduction substrate 2 is the copper billet of 6 * 6 * 4mm; The thermoelectric cooling system is a tower shape three tier structure device for cooling, and the first order is 10 * 10mm, and the second level is 8 * 8mm, and the third level is 6 * 6mm, and total refrigeration work consumption is 100W; Compressor refrigeration system is made up of compressor 5 and evaporator 4, and compressor horsepower is 100W.
The minute surface 1 of minute surface dew point testing system is tightened on the copper billet (heat conduction substrate 2) by screw thread, fits tightly between minute surface 1 and copper billet, fills heat-conducting silicone grease between minute surface 1 and copper billet, better effects if.Copper billet is welded on the cold junction (first order top) of thermoelectric refrigerating unit 3, and the hot junction of thermoelectric refrigerating unit 3 is fixed on evaporator 4 table tops by flange, obtains the thermoelectric cooling dual-cooling type dew point hygrometer that the utility model relates to.
Above-mentioned thermoelectric cooling dual-cooling type dew point hygrometer is owing to the effect of the two kinds of refrigeration modes that superposeed, and refrigeration is apparent in view.The dewpoint temperature that can record is minimum to be-75 ℃.If further strengthen the sum of series power of refrigerator and rationally mate, measurement range can further enlarge, and can reach-100 ℃.This dew point hygrometer has when measuring low dewpoint temperature and quick and precisely waits advantage.When being lower than-60 ℃ gas in measurement, this instrument can be saved half Measuring Time than other chilled-mirror type dew point instrument.
Claims (7)
1. a dual-cooling type dew point hygrometer is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: refrigeration system is made up of thermoelectric cooling system, compressor refrigeration system and demonstration and control system; The minute surface (1) of minute surface dew point testing system links to each other with the cold junction of thermoelectric refrigerating unit (3) by heat conduction substrate (2), the hot junction of thermoelectric refrigerating unit (3) links to each other with compressor refrigeration system evaporator (4), show the data message that receives self-testing system with control system (7), by the data processing and control refrigerating speed.
2. the dual-cooling type dew point hygrometer that relates to of claim 1 is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: described minute surface (1) is the copper sheet of band transition metal coating.
3. the dual-cooling type dew point hygrometer that relates to of claim 2 is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: the coating of described minute surface (1) is selected from a kind of in chromium, platinum or the platinum lawrencium alloy.
4. the dual-cooling type dew point hygrometer that relates to of claim 2 is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: a kind of in circle or the regular polygon of described minute surface (1).
5. the dual-cooling type dew point hygrometer that relates to of claim 1 is made up of minute surface dew point testing system and refrigeration system, and it is characterized in that: described heat conduction substrate (2) is a brass ingot.
6. the dual-cooling type dew point hygrometer that relates to of claim 1 is made up of minute surface dew point testing system and refrigeration system, it is characterized in that: described thermoelectric refrigerating unit (3) is multi-stage refrigerating.
7. the dual-cooling type dew point hygrometer that relates to of claim 6 is made up of minute surface dew point testing system and refrigeration system, and it is characterized in that: described thermoelectric refrigerating unit (3) is 3～5 grades of refrigeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202522874U CN201740753U (en) | 2010-07-08 | 2010-07-08 | Double-cooling type dew-point instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202522874U CN201740753U (en) | 2010-07-08 | 2010-07-08 | Double-cooling type dew-point instrument |
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| Publication Number | Publication Date |
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| CN201740753U true CN201740753U (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202522874U Expired - Fee Related CN201740753U (en) | 2010-07-08 | 2010-07-08 | Double-cooling type dew-point instrument |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636519A (en) * | 2011-02-12 | 2012-08-15 | 北京兴泰学成仪器有限公司 | Method and device for rapidly and accurately determining dew point of low-humidity gas |
| CN103018207A (en) * | 2012-10-18 | 2013-04-03 | 常州鸿源动力科技有限公司 | Chilled-mirror dew-point hygrometer based on Stirling low temperature refrigerator |
| CN103115943A (en) * | 2013-01-11 | 2013-05-22 | 安徽省建筑工程质量监督检测站 | Dew-point tester for electronic hollow glass |
| CN103754818A (en) * | 2014-01-14 | 2014-04-30 | 南京信息工程大学 | Micro-electro-mechanical system dew-point sensor provided with vacuum chamber and manufacturing method of dew-point sensor |
| CN105424751A (en) * | 2015-12-23 | 2016-03-23 | 天津市泓诚泰科技发展有限公司 | Super-low-humidity chilled mirror dew point meter, refrigeration device and refrigeration method therefor |
| CN111044567A (en) * | 2019-12-31 | 2020-04-21 | 中国人民解放军63837部队 | Chilled-mirror dew point hygrometer capable of quickly measuring extremely low dew point |
| CN112394086A (en) * | 2020-12-07 | 2021-02-23 | 广州奥松电子有限公司 | Dewing system and dew point instrument thereof |
-
2010
- 2010-07-08 CN CN2010202522874U patent/CN201740753U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636519A (en) * | 2011-02-12 | 2012-08-15 | 北京兴泰学成仪器有限公司 | Method and device for rapidly and accurately determining dew point of low-humidity gas |
| CN103018207A (en) * | 2012-10-18 | 2013-04-03 | 常州鸿源动力科技有限公司 | Chilled-mirror dew-point hygrometer based on Stirling low temperature refrigerator |
| CN103115943A (en) * | 2013-01-11 | 2013-05-22 | 安徽省建筑工程质量监督检测站 | Dew-point tester for electronic hollow glass |
| CN103115943B (en) * | 2013-01-11 | 2015-08-12 | 安徽省建筑工程质量监督检测站 | Electronics hollow-glass dew-point tester |
| CN103754818A (en) * | 2014-01-14 | 2014-04-30 | 南京信息工程大学 | Micro-electro-mechanical system dew-point sensor provided with vacuum chamber and manufacturing method of dew-point sensor |
| CN103754818B (en) * | 2014-01-14 | 2015-09-02 | 南京信息工程大学 | A kind of MEMS dew point transducer and manufacture method thereof with vacuum chamber |
| CN105424751A (en) * | 2015-12-23 | 2016-03-23 | 天津市泓诚泰科技发展有限公司 | Super-low-humidity chilled mirror dew point meter, refrigeration device and refrigeration method therefor |
| CN111044567A (en) * | 2019-12-31 | 2020-04-21 | 中国人民解放军63837部队 | Chilled-mirror dew point hygrometer capable of quickly measuring extremely low dew point |
| CN112394086A (en) * | 2020-12-07 | 2021-02-23 | 广州奥松电子有限公司 | Dewing system and dew point instrument thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20150708 |
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| EXPY | Termination of patent right or utility model |