CN202939322U - Device for calibrating humidity dynamic response characteristics of sonde with double-flow method - Google Patents
Device for calibrating humidity dynamic response characteristics of sonde with double-flow method Download PDFInfo
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- CN202939322U CN202939322U CN 201220646446 CN201220646446U CN202939322U CN 202939322 U CN202939322 U CN 202939322U CN 201220646446 CN201220646446 CN 201220646446 CN 201220646446 U CN201220646446 U CN 201220646446U CN 202939322 U CN202939322 U CN 202939322U
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Abstract
The utility model discloses a device for calibrating the humidity dynamic response characteristics of a sonde with a double-flow method. The device comprises a control system and a temperature-controlled water bath tank filled with fluid medium, wherein the water bath tank is internally provided with a testing room used for testing the humidity of the sonde, an outlet at the top of the testing room is connected with a vacuum pump through a first electrical regulating valve and a pipe fitting, the testing room is connected with a heat exchanger in the water bath tank through an air inlet pipe, an inlet end of the heat exchanger is connected with a first air inlet pipe and a second air inlet pipe which are capable of providing a set amount of dry nitrogen and a set amount of nitrogen with saturated humidity respectively, the testing room is further connected with a vacuum pressure gauge, and the vacuum pressure gauge is provided with a pipeline used for transmitting signals to the control system. The calibration device has the following beneficial effects: the calibration device can simulate the environment state during the launching process of the sonde and calibrate the humidity dynamic response characteristics of the sonde so as to solve the problem that the calibration on the humidity of the sonde takes a long time and is not accurate; and the calibration operation is convenient, quick and accurate.
Description
Technical field
The utility model relates to a kind of demarcation collimation technique of humidity measurement instrument, the device that particularly a kind of double-current method is demarcated the humidity dynamic response characteristic of sonde.
Background technology
Sonde refers to the general name of measuring the instrument of the various key elements of free atmosphere by self-contained inductor or radio telemetry method.Radiosonde carries on meteorological balloon, and it is measured a plurality of atmospheric parameters and passes these data back ground receiving station with radio.The radiosonde in the present age is via the computer communication on radio and ground, these data of passing back of computing machine real-time storage.The significant data of radiosonde measurement comprise atmospheric pressure, highly, longitude and latitude, temperature, relative humidity, wind speed and direction etc.Due to sonde, with balloon, the speed with 300～400 m/mins moves upward, can not be under a certain height stops, so the necessary inertia of the sensor of sonde is little, the variation of response external environment so rapidly, the meteorological element value on each height of more correct reflection.In addition, sonde is all disposable use usually, so sensor is fairly simple.What its was measured is all relative quantity, before formal release, carry out once " ground-check ", the absolute value of the relative value of sensor and its environment of living in is connected, in order to easily processed and convert with surveying to record afterwards.It is a comparatively problem of difficulty that sonde is measured high-altitude humidity, and it forms humidity sensor by the wet element of the senses such as hair, casing, resistance or electric capacity.No matter adopt the wet element of which kind of sense, the wet mode of the sense of its element is all absorption type, and therefore, the humidity measurement result certainly exists certain hysteresis.Based on previous reasons, sonde " ground-check " work before lift-off seems very important.
For civilian humidity sensor, because environmental change is relatively slow, its response characteristic requires relatively low.In view of external relevant expensive, therefore, in the national standard of China, the manual method of recommendation is carried out calibration measurements, and its complex operation, accuracy are not high, the demarcation of this manual scaling method for sonde humidity response characteristic, its weak point is particularly outstanding.Certainly, those skilled in the relevant art, by effort, have obtained certain achievement.As China Patent Publication No. CN101949747A, January 9 2011 publication date, invention and created name " humidity sensing element dynamic response characteristic calibration measurements system and measuring method ", this measuring system comprises two saturated salt containers that are arranged in a water bath, two interior saturated salt solution tops of saturated salt container form respectively two test chambers that humidity is different, two test chambers pass through pipeline, solenoid valve, the connections such as vacuum cycle pump, solenoid valve, vacuum cycle pumps etc. are controlled by electric bridge and control box by computing machine, can carry out the quick switching of 250～300ms with the humidity that realizes two test chambers.By place respectively a humidity sensing element in two test chambers, utilization is suitable for the scaling method of native system and realizes the dynamic response characteristic of humidity sensing element is carried out to test calibration, this measuring system is practical for civilian humidity sensor, but it is very difficult to want two test chambers to be arranged to the simulated environment of sonde, its computer-controlled program design relative complex, the operating process of whole test calibration also will be very very long.Therefore, this system is not suitable for sonde humidity dynamic calibration.Owing to there is no at present Perfected process and the device that is applicable to sonde humidity dynamic calibration, therefore, the ground-check work before the calibrating after the sonde manufacture completes and lift-off is all very loaded down with trivial details, and calibration result whether ideal to there is no method definite.The sonde of producing as different manufacturers after the lift-off of same region, its pressure, highly, the detecting structure of longitude and latitude, temperature, wind speed and direction is very nearly the same, and the humidity result of detection differs greatly.For this reason, need to improve.
Summary of the invention
The purpose of this utility model is exactly for the deficiencies in the prior art, provide a kind of double-current method to demarcate the device of sonde humidity dynamic response characteristic, this caliberating device can be simulated the ambient condition of sonde lift-off process sonde humidity dynamic response characteristic is demarcated, very long and the inaccurate problem of demarcation with solution sonde humidity demarcating process, its proving operation is convenient, fast, accurate.
For achieving the above object, the utility model adopts following technical scheme:
A kind of double-current method is demarcated the device of sonde humidity dynamic response characteristic, comprise a control system, a temperature is controlled and fills the water bath of fluid media (medium), be provided with the test cabinet for the sonde humidity measurement in water bath, the test cabinet top exit is connected with vacuum pump by the first electric controlled regulating valve and pipe fitting, test cabinet connects a heat exchange mixer that is positioned at water bath by a draft tube, and the entrance point of heat exchange mixer is connected with can provide respectively drying nitrogen with set amount and the first air inlet pipeline and second air inlet pipeline of saturated humidity nitrogen; Test cabinet also is connected with vacuum manometer, and vacuum manometer has the passage that carries out the pressure signal transmission with described control system.
Adopt the utility model of aforementioned techniques scheme, the temperature of test cabinet build-in test environment can raise gradually, reduce gradually or keep invariable condition; The humidity of test cabinet build-in test environment changes with the drying nitrogen of the first air inlet pipeline and the second air inlet pipeline and the set amount of saturated humidity nitrogen, when the drying nitrogen set amount is zero, the test indoor humidity is 100%, when the set amount of saturated humidity nitrogen is zero, the test indoor humidity is 0%; Force value in test cabinet is transferred to control system by vacuum manometer, control system compares pressure measured value and setting value, when the pressure measured value is different from setting value, control system is passed through the vacuum pump start and stop by control and is adjusted the aperture of the first electric controlled regulating valve, air pressure in test cabinet reaches certain vacuum tightness, and this force value can simulate that pressure in sonde lift-off process changes and by the variation of setting rule; When sonde being placed in test cabinet while being tested, temperature, humidity and pressure to the test environment in test cabinet are set and record in advance, by real-time reception and record the humidity measurement value of sonde, can determine the dynamic psychrometric response characteristic of this sonde, thereby obtain its family curve.
Preferably, described the first air inlet pipeline is connected on the steam line of laying in the nitrogen cylinder that liquid nitrogen is arranged by the first mass flowmeter and the second electric controlled regulating valve; Described the second air inlet pipeline is connected with moisture trap in turn by pipe fitting and, for drying nitrogen being carried out to the saturated humidifier of water-ice of saturability humidification, is connected with the steam line of described nitrogen cylinder with the 3rd electric controlled regulating valve by the second mass flowmeter successively on the inlet ductwork of the saturated humidifier of water-ice; The saturated humidifier of described water-ice all is arranged in described water bath; Described the first mass flowmeter and the second mass flowmeter all have the passage that carries out the flow signal transmission with described control system.The granted patent that the saturated humidifier of described water-ice is Chinese patent Granted publication CN101619880B bulletin, its invention and created name is " column plate type water, hail and air humidifier ".This humidifier can form the saturated wet environment that adds, when gas enters this saturated wet environment that adds can be by saturated humidification.Therefore, after on the pipeline of flowing through at drying nitrogen, this humidifier being set, the nitrogen that flows out this humidifier just forms the nitrogen with saturated humidity, and moisture trap separates the moisture condensed in the nitrogen of saturated humidity to form the saturated humidity nitrogen of pure gaseous state.Control system is calculated the humidity of combination gas according to the metering result of the first mass flowmeter and the second mass flowmeter, and by this humidity with set humidity ratio, respectively the second electric controlled regulating valve and the 3rd electric controlled regulating valve are carried out to flow regulation, the calculating humidity that reaches combination gas equates with setting humidity.
Further preferred, also be connected with the detection bypass that an available dew point hygrometer detects humidity on described draft tube pipeline, detect bypass and be provided with gate valve, gate valve is positioned at the pipeline section section of dew point hygrometer entrance point; Draft tube is provided with stop valve for the pipeline section be connected with test cabinet.By dew point hygrometer, the calculated amount of a plurality of setting humidity in each stage or title theory setting amount are carried out to calibration validation to facilitate by turn-offing stop valve, thereby further guarantee the accuracy of determined sonde dynamic psychrometric resonse characteristic.
Preferably, described water bath bottom is provided with heating and the refrigerating plant for heating and cooling water bath inner fluid medium, and heating is connected with control system with refrigerating plant; Also be provided with the temperature element for detection of water bath inner fluid medium temperature in water bath, temperature element has to the transmission channel of control system transmission temperature signal.So that the fluid media (medium) temperature in water bath is controlled, thereby for providing, test cabinet simulates the environment that sonde lift-off process temperature changes.
Preferably, described heat exchange mixer is helix.Because gas has extremely strong diffusivity, dry and saturated humidity nitrogen can mix in the short period of time, and therefore, the heat exchange mixer adopts helix to get final product, and also is convenient to heat interchange, with simplified structure, reduces manufacturing cost.
Preferably, also be provided with pressure-regulating valve on the steam line of described nitrogen cylinder.Demarcate and to carry out stablizing under the supply gas pressure condition with characteristic, guarantee that staking-out work can normally continue to carry out.
The beneficial effects of the utility model are, this caliberating device can be simulated the ambient condition of sonde lift-off process sonde humidity dynamic response characteristic is demarcated, very long and the inaccurate problem of demarcation with solution sonde humidity demarcating process, its proving operation is convenient, fast, accurate.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model caliberating device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but therefore the utility model is not limited among described scope of embodiments.
Referring to Fig. 1, a kind of double-current method is demarcated the device of sonde humidity dynamic response characteristic, comprise a control system, one temperature is controlled and fill the water bath 1 of fluid media (medium) 21, be provided with the test cabinet 2 for the sonde humidity measurement in water bath 1, test cabinet 2 top exits are connected with vacuum pump 4 by the first electric controlled regulating valve 3 and pipe fitting, test cabinet 2 is positioned at the heat exchange mixer 6 of water bath 1 by draft tube 5 connections one, the entrance point of heat exchange mixer 6 is connected with can provide respectively drying nitrogen with set amount and the first air inlet pipeline 7 and second air inlet pipeline 8 of saturated humidity nitrogen, test cabinet 2 also is connected with vacuum manometer 17, and vacuum manometer 17 has the passage that carries out the pressure signal transmission with described control system.
Described the first air inlet pipeline 7 is connected to deposit and has on the steam line of nitrogen cylinder 11 of liquid nitrogen 12 by the first mass flowmeter 9 and the second electric controlled regulating valve 10; Described the second air inlet pipeline 8 is connected with moisture trap 13 in turn by pipe fitting and, for drying nitrogen being carried out to the saturated humidifier 14 of water-ice of saturability humidification, is connected with the steam line 12 of described nitrogen cylinder 11 with the 3rd electric controlled regulating valve 16 by the second mass flowmeter 15 successively on the inlet ductwork of the saturated humidifier 14 of water-ice; The saturated humidifier 14 of described water-ice all is arranged in described water bath 1; Described the first mass flowmeter 9 and the second mass flowmeter 15 all have the passage that carries out the flow signal transmission with described control system.
Also be connected with the detection bypass 19 that an available dew point hygrometer 18 detects humidity on described draft tube 5 pipelines, detect bypass 19 and be provided with gate valve 20, gate valve 20 is positioned at the pipeline section section of dew point hygrometer 18 entrance points; Draft tube 5 is provided with stop valve 25 for the pipeline section be connected with test cabinet 2.
Described water bath 1 bottom is provided with heating and the refrigerating plant 22 for heating and cooling water bath 1 inner fluid medium 21, and heating is connected with control system with refrigerating plant 22; Also be provided with the temperature element 23 for detection of water bath 1 inner fluid medium 21 temperature in water bath 1, temperature element 23 has to the transmission channel of control system transmission temperature signal.
Described heat exchange mixer 6 is helix.
Also be provided with pressure-regulating valve 24 on the steam line 12 of described nitrogen cylinder 11.
Combine accompanying drawing although above and described embodiment of the present utility model, but those of ordinary skill in the art also can recognize in the scope to claims and make various variations or modification, these modifications and variations are interpreted as within scope of the present utility model and intention.
Claims (6)
1. a double-current method is demarcated the device of sonde humidity dynamic response characteristic, comprise a control system, one temperature is controlled and fill the water bath (1) of fluid media (medium) (21), be provided with the test cabinet (2) for the sonde humidity measurement in water bath (1), it is characterized in that, described test cabinet (2) top exit is connected with vacuum pump (4) by the first electric controlled regulating valve (3) and pipe fitting, test cabinet (2) connects a heat exchange mixer (6) that is positioned at water bath (1) by a draft tube (5), the entrance point of heat exchange mixer (6) is connected with can provide respectively drying nitrogen with set amount and the first air inlet pipeline (7) and second air inlet pipeline (8) of saturated humidity nitrogen, test cabinet (2) also is connected with vacuum manometer (17), and vacuum manometer (17) has the passage that carries out the pressure signal transmission with described control system.
2. double-current method according to claim 1 is demarcated the device of sonde humidity dynamic response characteristic, it is characterized in that: described the first air inlet pipeline (7) is connected on the steam line of laying in the nitrogen cylinder (11) that liquid nitrogen is arranged (12) by the first mass flowmeter (9) and the second electric controlled regulating valve (10); Described the second air inlet pipeline (8) is connected with moisture trap (13) in turn by pipe fitting and, for drying nitrogen being carried out to the saturated humidifier of water-ice (14) of saturability humidification, is connected with the steam line (12) of described nitrogen cylinder (11) with the 3rd electric controlled regulating valve (16) by the second mass flowmeter (15) successively on the inlet ductwork of the saturated humidifier of water-ice (14); The saturated humidifier of described water-ice (14) all is arranged in described water bath (1); Described the first mass flowmeter (9) and the second mass flowmeter (15) all have the passage that carries out the flow signal transmission with described control system.
3. double-current method according to claim 2 is demarcated the device of sonde humidity dynamic response characteristic, it is characterized in that: also be connected with the detection bypass (19) that an available dew point hygrometer (18) detects humidity on described draft tube (5) pipeline, detect bypass (19) and be provided with gate valve (20), gate valve (20) is positioned at the pipeline section section of dew point hygrometer (18) entrance point; Draft tube (5) is provided with stop valve (25) for the pipeline section be connected with test cabinet (2).
4. double-current method according to claim 1 is demarcated the device of sonde humidity dynamic response characteristic, it is characterized in that: described water bath (1) bottom is provided with heating and the refrigerating plant (22) for heating and cooling water bath (1) inner fluid medium (21), and heating is connected with control system with refrigerating plant (22); Also be provided with the temperature element (23) for detection of water bath (1) inner fluid medium (21) temperature in water bath (1), temperature element (23) has to the transmission channel of control system transmission temperature signal.
5. double-current method according to claim 1 is demarcated the device of sonde humidity dynamic response characteristic, and it is characterized in that: described heat exchange mixer (6) is helix.
6. demarcate the device of sonde humidity dynamic response characteristic according to the described double-current method of claim 2 or 3, it is characterized in that: on the steam line (12) of described nitrogen cylinder (11), also be provided with pressure-regulating valve (24).
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998720A (en) * | 2012-11-30 | 2013-03-27 | 重庆四达试验设备有限公司 | Method and device for calibrating dynamic response characteristic of sonde humidity by double flow method |
| CN104007003A (en) * | 2014-06-11 | 2014-08-27 | 陕西天宏硅材料有限责任公司 | Method for adjusting dew point of permanent gas used in laboratory |
| CN104698135A (en) * | 2015-03-16 | 2015-06-10 | 东南大学 | Device and method for measuring response time of humidity sensor |
| CN104932038A (en) * | 2015-07-14 | 2015-09-23 | 重庆四达试验设备有限公司 | Temperature-humidity-pressure comprehensive generator used for verifying temperature, humidity and pressure sensors |
| CN106855529A (en) * | 2015-12-09 | 2017-06-16 | 中国科学院大连化学物理研究所 | A kind of controllable miniature test box of humidity and its application |
| RU2622833C2 (en) * | 2015-11-30 | 2017-06-20 | Общество с ограниченной ответственностью "Научно-производственное предприятие ОКБА" (ООО "НПП ОКБА") | Wet gas generator |
| CN114384955A (en) * | 2021-12-17 | 2022-04-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Low-temperature low-pressure relative humidity standard device |
-
2012
- 2012-11-30 CN CN 201220646446 patent/CN202939322U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998720A (en) * | 2012-11-30 | 2013-03-27 | 重庆四达试验设备有限公司 | Method and device for calibrating dynamic response characteristic of sonde humidity by double flow method |
| CN104007003A (en) * | 2014-06-11 | 2014-08-27 | 陕西天宏硅材料有限责任公司 | Method for adjusting dew point of permanent gas used in laboratory |
| CN104698135A (en) * | 2015-03-16 | 2015-06-10 | 东南大学 | Device and method for measuring response time of humidity sensor |
| CN104932038A (en) * | 2015-07-14 | 2015-09-23 | 重庆四达试验设备有限公司 | Temperature-humidity-pressure comprehensive generator used for verifying temperature, humidity and pressure sensors |
| RU2622833C2 (en) * | 2015-11-30 | 2017-06-20 | Общество с ограниченной ответственностью "Научно-производственное предприятие ОКБА" (ООО "НПП ОКБА") | Wet gas generator |
| CN106855529A (en) * | 2015-12-09 | 2017-06-16 | 中国科学院大连化学物理研究所 | A kind of controllable miniature test box of humidity and its application |
| CN114384955A (en) * | 2021-12-17 | 2022-04-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Low-temperature low-pressure relative humidity standard device |
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Address after: 401122 Chongqing new North Road No. 8 Building 1 Patentee after: Chongqing sushi Sida Test Equipment Co.,Ltd. Address before: 401122 Chongqing new North Road No. 8 Building 1 Patentee before: CHONGQING SD EXPERIMENT INSTRUMENT Co.,Ltd. |
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Granted publication date: 20130515 |