CN101846598A - Time-sharing multiple-sample constant-temperature constant-current air sampler - Google Patents
Time-sharing multiple-sample constant-temperature constant-current air sampler Download PDFInfo
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- CN101846598A CN101846598A CN201010174255A CN201010174255A CN101846598A CN 101846598 A CN101846598 A CN 101846598A CN 201010174255 A CN201010174255 A CN 201010174255A CN 201010174255 A CN201010174255 A CN 201010174255A CN 101846598 A CN101846598 A CN 101846598A
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Abstract
The invention discloses a time-sharing multiple-sample constant-temperature constant-current air sampler which comprises a single chip computer and two air paths, wherein the single chip computer is provided with a keyboard and a display; each air path comprises an air inlet, absorbing bottles, electromagnetic valves, a flow sensor, an air suction pump and an air vent which are connected sequentially. The air sampler is characterized in that each air inlet is connected with at least two absorbing bottles in parallel by a connecting pipe, wherein each absorbing bottle is connected with an electromagnetic valve in series and is communicated with a drying bottle; the absorbing bottles are arranged in a constant-temperature tank which is internally provided with a temperature sensor and a temperature controller; and the electromagnetic valves, the flow sensors, the temperature sensors, the temperature controllers and the air suction pumps are all electrically connected with the single chip computer. The sampler is connected with a plurality of absorbing bottles in parallel in one air path; the single chip computer is used for controlling the conversion of sampling branch air paths according to set conditions to finish the constant-temperature constant-current collection of multiple samples at time sharing by one air path; and the air sampler has accurate control, and saves labor force.
Description
Technical field
The present invention relates to a kind of air sampler, relate to specifically and a kind ofly can use same gas circuit to gather the time-sharing multiple-sample constant-temperature constant-current air sampler of a plurality of samples respectively, belong to the environment monitoring technical field in the different periods.
Background technology
The general gas circuit of existing air sampler can only be gathered a sample, is made up of absorption bottle, flowmeter, aspiration pump and time set.Be used to gather SO
2, NO
XDuring sample, two gas channels are set in instrument generally, gather a SO respectively simultaneously
2, a NO
XSample.China's utility model patent 90204510.5 discloses a kind of 24 hours automatically continuous air samplers of constant temperature, be mainly used in environmental administration and carry out the air sample collection, its two sampling bottles are connected to the air intake opening place of solenoid valve, connect with drying bottle, constant current hole, flowmeter, aspiration pump in the gas outlet of solenoid valve.Though this sampling thief can be gathered atmosphere at any time in 24 hours, but need the manual operation opening and closing, troublesome poeration not only, and the time is difficult to control, can not in the standard code time, gather the desired gas sample, and often solenoid valve can not accurately cooperate with aspiration pump, and its gas content of the gas sample of collection is difficult to statistics in a setting-up time, influences the analysis result of air sampling.At present, national environmental protection portion has issued HJ2.2-2008 " environmental impact assessment technology guide rule atmospheric environment " standard on Dec 31st, 2008, wherein regulation one-level environmental evaluation project is obtained local times 02,05,08,11,14,17,20,23 point at least, the pollutant quality concentration value in 8 moment, two, three grades of assessment items obtain the pollutant quality concentration value in 02,08,14,20: 4 moment of local time at least.Therefore, carry out will going to the monitoring point 8 times when one-level is estimated with existing instrument, and the most of the time all outside normal working hours, very time-consuming, effort.
Summary of the invention
At the deficiency that prior art exists, technical matters to be solved by this invention is: a kind of time-sharing multiple-sample constant-temperature constant-current air sampler that can gather a plurality of samples in the different periods respectively is provided.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of time-sharing multiple-sample constant-temperature constant-current air sampler comprises single-chip microcomputer and two gas circuits; Its single-chip microcomputer is provided with keyboard and display, and its each gas circuit includes air intake opening, absorption bottle, solenoid valve, flow sensor, aspiration pump and the exhausr port that connects successively; Its air intake opening is by at least two absorption bottles of connecting pipe parallel connection, wherein all a connect solenoid valve and be communicated with drying bottle of each absorption bottle; Its absorption bottle places in the constant temperature oven, and temperature sensor and temperature controller are set in the constant temperature oven; Described solenoid valve, flow sensor, temperature sensor, temperature controller, aspiration pump all are electrically connected with single-chip microcomputer.
The effect of constant temperature oven is the absorption efficiency that guarantees and improve absorption liquid in the absorption bottle.The temperature value that temperature sensor is surveyed during work, reaches the interior temperature of constant temperature oven temperature is set by the Single-chip Controlling temperature controller to single-chip microcomputer.
Flow sensor is used for measuring the flow of gas circuit, and the flow signal that flow sensor is surveyed during work reaches single-chip microcomputer, controls the flow of aspiration pump in view of the above by single-chip microcomputer, makes the flow of flows through sensor reach setting value, realizes the purpose of constant current sampling.
Keyboard is used for input value and operation steering order, and display shows numerical value and information such as flow, temperature, time automatically.
Two gas circuits are arranged, its each gas circuit 4 to 8 absorption bottles all in parallel in the above-mentioned time-sharing multiple-sample constant-temperature constant-current air sampler.
Above-mentioned time-sharing multiple-sample constant-temperature constant-current air sampler also is provided with surge flask between its flow sensor and aspiration pump.
The preferred low discharge mass flow sensor of described flow sensor.Flow sensor is used for measuring flow, and its flow sensor can be the low discharge mass flow sensor, also can use other flowmeter, as orifice metre, reaches the purpose of flow measurement.
This air sampler is a plurality of absorption bottles in parallel in a gas circuit, the switching of controlling opening, stopping of aspiration pump and solenoid valve with single-chip microcomputer by the condition of setting is finished the constant-temperature constant-current collection that a gas circuit is carried out a plurality of samples at times to realize a sampling gas circuit conversion.Can sample automatically in different time sections, and precise control, labor savings.
Description of drawings
The present invention is described in more detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the structural representation of a gas circuit of an embodiment of the present invention.
Embodiment
A kind of time-sharing multiple-sample constant-temperature constant-current air sampler, it comprises two gas circuits that single-chip microcomputer is identical with structure.As shown in Figure 1, single-chip microcomputer 22 is provided with keyboard 17 and display 18, the air intake opening 1 of its each gas circuit is by connecting pipe 2 four absorption bottles 3,5,7,9 in parallel, all connect an accordingly solenoid valve 4,6,8,10 and all being communicated with of each absorption bottle 3,5,7,9 wherein with drying bottle 12, absorption bottle coats constant temperature oven 21 outward, is provided with temperature sensor 20 and semiconductor temperature-control device 19 in the constant temperature oven 21; Its temperature sensor 20, semiconductor temperature-control device 19, solenoid valve 4,6,8,10 and aspiration pump 15 and low discharge mass flow sensor 13 all are electrically connected with single-chip microcomputer 22, are provided with surge flask 14 between low discharge mass flow sensor 13 and the aspiration pump 15.
That is to say, this time-sharing multiple-sample constant-temperature constant-current air sampler comprises two gas circuits, and its any one gas circuit can be regarded as separately by air intake opening 1, connecting pipe 2, absorption bottle 3, absorption bottle 5, absorption bottle 7, absorption bottle 9, solenoid valve 4, solenoid valve 6, solenoid valve 8, solenoid valve 10, connecting pipe 11, low discharge mass flow sensor 13, surge flask 14, drying bottle 12, the bottle 15 of bleeding, exhausr port 16, keyboard 17, display 18, semiconductor temperature-control device 19, temperature sensor 20, constant temperature oven 21, single-chip microcomputer 22 and form.Its absorption bottle 3 is connected with solenoid valve 4, absorption bottle 5 is connected with solenoid valve 6, and absorption bottle 7 is connected with solenoid valve 8, absorption bottle 9 be parallel to respectively between connecting pipe 2 and the connecting pipe 11 after solenoid valve 10 is connected.During work, under the control of single-chip microcomputer 22, absorption bottle 3 samplings, solenoid valve 4 is open-minded, aspiration pump 15 work, solenoid valve 6 solenoid valves 8 solenoid valves 10 cut out; Under the attraction force acts of aspiration pump 15, gas is drained into atmosphere behind air intake opening 1, connecting pipe 2, absorption bottle 3, connecting pipe 11, drying bottle 12, flow sensor 13, surge flask 14, aspiration pump 15, exhausr port 16.In like manner, absorption bottle 5 samplings, solenoid valve 6 is open-minded, aspiration pump 15 work, solenoid valve 4 solenoid valves 8 solenoid valves 10 cut out; Absorption bottle 7 samplings, solenoid valve 8 is open-minded, aspiration pump 15 work, solenoid valve 4 solenoid valves 6 solenoid valves 10 cut out; Absorption bottle 9 samplings, solenoid valve 10 is open-minded, aspiration pump 15 work, solenoid valve 4 solenoid valves 6 solenoid valves 8 cut out.Only single-chip microcomputer 22 control aspiration pumps 15 work when each sample collecting, aspiration pump 15 is not worked when not gathering.Its temperature sensor 20 is measured the temperature in constant temperature ovens 21 and signal is conducted to single-chip microcomputer 22, and single-chip microcomputer 22 control semiconductor temperature-control devices 19 make the temperature in the constant temperature oven 21 remain on design temperature, realize the constant temperature sampling.Its low discharge mass flow sensor 13 is measured and is conducted to single-chip microcomputer 22 by the gas stream value of low discharge mass flow sensor 13 and with signal, and the work of single-chip microcomputer 22 control aspiration pumps 15 makes the flow value of gas keep the setting flow, realizes the constant current sampling.
Certainly, aforementioned content only is one embodiment of the present of invention, as required the absorption bottle in its each gas circuit can be set to a plurality of, such as 2,6,8 etc., but its basic structure is all consistent with the foregoing description.That is to say no matter be provided with how many absorption bottles, all a connect solenoid valve and be communicated with of its each absorption bottle with drying bottle, other are provided with all identical.
Claims (4)
1. a time-sharing multiple-sample constant-temperature constant-current air sampler comprises single-chip microcomputer and two gas circuits; Its single-chip microcomputer is provided with keyboard and display, and its each gas circuit includes air intake opening, absorption bottle, solenoid valve, flow sensor, aspiration pump and the exhausr port that connects successively; It is characterized in that: its air intake opening is by at least two absorption bottles of connecting pipe parallel connection, wherein all a connect solenoid valve and be communicated with drying bottle of each absorption bottle; Its absorption bottle places in the constant temperature oven, and temperature sensor and temperature controller are set in the constant temperature oven; Described solenoid valve, flow sensor, temperature sensor, temperature controller, aspiration pump all are electrically connected with single-chip microcomputer.
2. time-sharing multiple-sample constant-temperature constant-current air sampler according to claim 1 is characterized in that: its each gas circuit 4 to 8 absorption bottles all in parallel.
3. time-sharing multiple-sample constant-temperature constant-current air sampler according to claim 2 is characterized in that: surge flask also is set between its flow sensor and aspiration pump.
4. time-sharing multiple-sample constant-temperature constant-current air sampler according to claim 3 is characterized in that: described flow sensor is the low discharge mass flow sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010174255A CN101846598A (en) | 2010-05-18 | 2010-05-18 | Time-sharing multiple-sample constant-temperature constant-current air sampler |
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|---|---|---|---|
| CN201010174255A CN101846598A (en) | 2010-05-18 | 2010-05-18 | Time-sharing multiple-sample constant-temperature constant-current air sampler |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507274A (en) * | 2011-11-15 | 2012-06-20 | 吉林省电力科学研究院有限公司 | Intelligent air automatic sampler for occupational health |
| CN102519757A (en) * | 2011-11-28 | 2012-06-27 | 上海宝田新型建材有限公司 | Time-sharing automatic sampling device for powder production and control method |
| CN102654435A (en) * | 2012-05-15 | 2012-09-05 | 青岛恒远检测技术有限公司 | Multifunctional high-load aerosol constant-current sampler |
| CN103293032A (en) * | 2013-05-24 | 2013-09-11 | 深圳国技仪器有限公司 | Atmospheric sampling system with real-time temperature and flow control function |
| CN103353409A (en) * | 2013-05-14 | 2013-10-16 | 深圳国技仪器有限公司 | Atmosphere sampling apparatus with temperature regulation function |
| CN104266878A (en) * | 2014-09-30 | 2015-01-07 | 张其森 | Automatic sample-changing sampler for quality of ambient air |
| CN104568519A (en) * | 2014-12-19 | 2015-04-29 | 苏州市华测检测技术有限公司 | Constant flow temperature control atmospheric sampling equipment |
| CN105527131A (en) * | 2015-12-24 | 2016-04-27 | 哈尔滨盈江科技有限公司 | Intelligent dust detection system and detection method |
| CN108693261A (en) * | 2018-04-12 | 2018-10-23 | 广州市赛特检测有限公司 | A kind of detection method and sampling apparatus of Indoor Air Benzene and total volatile organic compounds |
| CN111043806A (en) * | 2019-11-26 | 2020-04-21 | 深圳国技环保技术有限公司 | Gas refrigeration scheme absorption bottle sampling refrigeration and low-temperature storage composite device and method |
| CN116539380A (en) * | 2023-06-15 | 2023-08-04 | 宁夏测衡联合实业有限公司 | Constant temperature constant current atmospheric sampling device |
-
2010
- 2010-05-18 CN CN201010174255A patent/CN101846598A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507274B (en) * | 2011-11-15 | 2013-10-23 | 吉林省电力科学研究院有限公司 | Intelligent air automatic sampler for occupational health |
| CN102507274A (en) * | 2011-11-15 | 2012-06-20 | 吉林省电力科学研究院有限公司 | Intelligent air automatic sampler for occupational health |
| CN102519757A (en) * | 2011-11-28 | 2012-06-27 | 上海宝田新型建材有限公司 | Time-sharing automatic sampling device for powder production and control method |
| CN102519757B (en) * | 2011-11-28 | 2013-08-07 | 上海宝田新型建材有限公司 | Time-sharing automatic sampling device for powder production and control method |
| CN102654435A (en) * | 2012-05-15 | 2012-09-05 | 青岛恒远检测技术有限公司 | Multifunctional high-load aerosol constant-current sampler |
| CN103353409B (en) * | 2013-05-14 | 2015-12-02 | 深圳国技仪器有限公司 | Possesses the atmospheric sampling equipment of temperature adjusting function |
| CN103353409A (en) * | 2013-05-14 | 2013-10-16 | 深圳国技仪器有限公司 | Atmosphere sampling apparatus with temperature regulation function |
| CN103293032A (en) * | 2013-05-24 | 2013-09-11 | 深圳国技仪器有限公司 | Atmospheric sampling system with real-time temperature and flow control function |
| CN104266878A (en) * | 2014-09-30 | 2015-01-07 | 张其森 | Automatic sample-changing sampler for quality of ambient air |
| CN104568519A (en) * | 2014-12-19 | 2015-04-29 | 苏州市华测检测技术有限公司 | Constant flow temperature control atmospheric sampling equipment |
| CN105527131A (en) * | 2015-12-24 | 2016-04-27 | 哈尔滨盈江科技有限公司 | Intelligent dust detection system and detection method |
| CN108693261A (en) * | 2018-04-12 | 2018-10-23 | 广州市赛特检测有限公司 | A kind of detection method and sampling apparatus of Indoor Air Benzene and total volatile organic compounds |
| CN111043806A (en) * | 2019-11-26 | 2020-04-21 | 深圳国技环保技术有限公司 | Gas refrigeration scheme absorption bottle sampling refrigeration and low-temperature storage composite device and method |
| CN111043806B (en) * | 2019-11-26 | 2022-07-29 | 江苏国技智能科技有限公司 | Gas refrigeration scheme absorption bottle sampling refrigeration and low-temperature storage composite device and method |
| CN116539380A (en) * | 2023-06-15 | 2023-08-04 | 宁夏测衡联合实业有限公司 | Constant temperature constant current atmospheric sampling device |
| CN116539380B (en) * | 2023-06-15 | 2024-04-19 | 宁夏测衡联合实业有限公司 | Constant temperature constant current atmospheric sampling device |
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Application publication date: 20100929 |