CN202757808U - Constant-flow air sampler - Google Patents
Constant-flow air sampler Download PDFInfo
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- CN202757808U CN202757808U CN 201220250134 CN201220250134U CN202757808U CN 202757808 U CN202757808 U CN 202757808U CN 201220250134 CN201220250134 CN 201220250134 CN 201220250134 U CN201220250134 U CN 201220250134U CN 202757808 U CN202757808 U CN 202757808U
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- constant current
- gas piping
- air
- sensor
- air pump
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Abstract
The utility model discloses a constant-flow air sampler which comprises an air pump, an air delivery pipe and a control system. The air pump is communicated with a sampling bottle through the air delivery pipe, the control system comprises a sensor and a micro-processor which are electrically connected, the sensor is arranged on the air delivery pipe and used for measuring air pressure information of the air delivery pipe, the information is transmitted to the micro-processor in the form of electric signals, and the micro-processor is used for adjusting the power of the air pump in real time to realize constant-flow control. The constant-flow air sampler is convenient and fast to operate and capable of realizing constant-flow control.
Description
Technical field
The utility model relates to a kind of ambient atmosphere sampling equipment field, relates in particular to a kind of convenient to operation and can realize the constant current air sampler of constant current control.
Background technology
Development along with industry, the pollution of atmosphere has the trend of aggravation, therefore the control of atmospheric pollution also more and more comes into one's own, and the atmosphere in the zone that the control of atmospheric pollution at first must detect needs is taken a sample, then atmospheric sample is under lab carried out test analysis, and then draw every test result, targetedly this regional atmosphere is prevented and treated according to test result at last.
The present environment used air sampler of sampling, great majority divide two kinds: the one, indicate flow by suspended body flowmeter, this atmosphere sampler is very convenient in the process of sampling, but the reason owing to suspended body flowmeter, in the process of sampling, can not get the information feedback, therefore can not realize constant current control, so error of measured data is larger; The 2nd, be provided with sensor at air sampler, and sensor is carried out the demarcation of flow curve, by microprocessor (MCU) output of sensor is converted into data on flows, the data that said method is measured are more accurate, but owing to before sampling, need to sensor be demarcated, the process of this demarcation quite bothers, but also need a large amount of time of cost, be unfavorable for improving formation efficiency.
Indicate the air sampler of flow by suspended body flowmeter, because suspended body flowmeter is graduation indication, therefore can produce larger reading error, and its principle is to carry out the flow adjustment by the size in the aperture of regulating gas circuit, therefore without feedback function, simultaneously when an aperture adjustment is too small, the resistance that is air pump is excessive, then can produce larger power consumption, and the measured data of the air sampler that uses sensor are more accurate, but because its sensor needs to demarcate, require a great deal of time when therefore producing sensor is demarcated, cumbersome.
Therefore, need badly a kind of convenient to operation and can realize the constant current air sampler of constant current control.
The utility model content
The purpose of this utility model provides a kind of convenient to operation and can realize the constant current air sampler of constant current control.
To achieve these goals, the technical scheme that the utility model provides is: a kind of constant current air sampler is provided, it comprises: air pump, gas piping and control system, described air pump is communicated with sampling bottle by described gas piping, described control system comprises sensor and the microprocessor of electric connection, described sensor setting is used for measuring the information of the air pressure in the described gas piping on described gas piping, and send to described microprocessor with the form of electric signal, described microprocessor carries out real-time adjustment to the power of described air pump, realizes constant current control.
Described constant current air sampler also comprises flowmeter, and described flowmeter is arranged on the described gas piping.
Described constant current air sampler also comprises three-way pipe, and the first port of described three-way pipe is communicated with described air pump, and the second port is communicated with sampling bottle, and the 3rd port is communicated with described sensor.
Described sensor is pressure transducer.
Described flow is counted suspended body flowmeter.
Described control system also comprises human-computer interaction module, described human-computer interaction module and described microprocessor are electrically connected, comprise load module and display module, described load module is used for inputting the initial setting up of described microprocessor, and described display module is used for showing the information of the air pressure in the described gas piping.
Compared with prior art, in the utility model constant current air sampler, when sampling, described control system is carried out real-time adjustment to the gas flow on the described gas piping, has realized constant current control, adjustment process is: after starting described air pump, described microprocessor detects the output of described sensor, and the pressure of the described gas piping of described sensor measurement inside is if its pressure equals default value, then keep current air pump power to work on, keep constant rate.The pressure that detects described sensor output when described microprocessor changes, voltage in the electric power system is described or electric current changes or gas circuit resistance mode changes, then when diminishing, its pressure increases the air pump operating power, when becoming large, its pressure then reduces the operating power of air pump, make the pressure of described gas piping inside maintain setting value, thereby realize constant current control.
By following description also by reference to the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used for explaining embodiment of the present utility model.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model constant current air sampler.
Fig. 2 is the workflow block diagram of the control system of constant current air sampler as shown in Figure 1.
Illustrate: constant current air sampler 100, air pump 10, gas piping 20, control system 30, sensor 31, microprocessor 32, human-computer interaction module 33, load module 33a, display module 33b, flowmeter 40, three-way pipe 50, the first ports 51, the second ports 52, the three ports 53.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, similar element numbers represents similar element in the accompanying drawing.As mentioned above, as shown in Figure 1, the constant current air sampler 100 that the utility model provides, it comprises: air pump 10, gas piping 20 and control system 30, described air pump 10 is communicated with sampling bottle (not showing on the figure) by described gas piping 20, described control system 30 comprises sensor 31 and the microprocessor 32 of electric connection, described sensor 31 is arranged at the information that is used for measuring the air pressure in the described gas piping 20 on the described gas piping 20, and send to described microprocessor 32 with the form of electric signal, the power of 32 pairs of described air pumps 10 of described microprocessor carries out real-time adjustment, realizes constant current control.Concrete, shown in Fig. 1 and 2, the adjustment process of the air pressure in 100 pairs of described gas pipings 20 of the utility model constant current air sampler is: after starting described air pump 10, described microprocessor 32 detects the output of described sensor 31, described microprocessor 32 judges whether the air pressure in the described gas piping 20 equals default value, if air pressure equals setting value, then keep current air pump 10 power to work on, keep constant rate, if air pressure is less than setting value, then increase the operating power of described air pump 10, if air pressure greater than setting value, then reduces the operating power of described air pump 10.
As shown in Figure 1, described constant current air sampler 100 also comprises flowmeter 40, and described flowmeter 40 is arranged on the described gas piping 20.
As shown in Figure 1, described constant current air sampler 100 also comprises three-way pipe 50, and the first port 51 of described three-way pipe 50 is communicated with described air pump 10, and the second port 52 is communicated with sampling bottle, and the 3rd port 53 is communicated with described sensor 31.By described three-way pipe 50 is set, can make things convenient for described sensor 31 to detect the information of the air pressure in the described gas piping 20.
As shown in Figure 1, 2, described sensor 31 is pressure transducer.
As shown in Figure 1, described flowmeter 40 is suspended body flowmeter.
As shown in Figure 2, described control system 30 also comprises human-computer interaction module 33, described human-computer interaction module 33 is electrically connected with described microprocessor 32, comprise load module 33a and display module 33b, described load module 33a is used for inputting the initial setting up of described microprocessor 32, and described display module 33b is used for showing the information of the air pressure in the described gas piping 20.
In conjunction with Fig. 1 and Fig. 2, in the utility model constant current air sampler 100, when sampling, the gas flow on 30 pairs of described gas pipings 20 of described control system carries out real-time adjustment, has realized constant current control, adjustment process is: after starting described air pump 10, described microprocessor 32 detects the output of described sensor 31, and described sensor 31 is measured the pressure of described gas piping 20 inside, if its pressure equals default value, then keep current air pump 10 power to work on, keep constant rate.The pressure that detects described sensor 31 outputs when described microprocessor 32 changes, voltage in the electric power system is described or electric current changes or gas circuit resistance mode changes, then when diminishing, its pressure increases described air pump 10 operating powers, when becoming large, its pressure then reduces the operating power of described air pump 10, make the pressure of described gas piping 20 inside maintain setting value, thereby realize constant current control.
Above disclosed only is preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (6)
1. constant current air sampler, it is characterized in that, comprise: air pump, gas piping and control system, described air pump is communicated with sampling bottle by described gas piping, described control system comprises sensor and the microprocessor of electric connection, and described sensor setting is used for measuring the information of the air pressure in the described gas piping on described gas piping, and sends to described microprocessor with the form of electric signal, described microprocessor carries out real-time adjustment to the power of described air pump, realizes constant current control.
2. constant current air sampler as claimed in claim 1, it is characterized in that: also comprise flowmeter, described flowmeter is arranged on the described gas piping.
3. constant current air sampler as claimed in claim 1, it is characterized in that: also comprise three-way pipe, the first port of described three-way pipe is communicated with described air pump, and the second port is communicated with sampling bottle, and the 3rd port is communicated with described sensor.
4. constant current air sampler as claimed in claim 1, it is characterized in that: described sensor is pressure transducer.
5. constant current air sampler as claimed in claim 2, it is characterized in that: described flow is counted suspended body flowmeter.
6. constant current air sampler as claimed in claim 1, it is characterized in that: described control system also comprises human-computer interaction module, described human-computer interaction module and described microprocessor are electrically connected, comprise load module and display module, described load module is used for inputting the initial setting up of described microprocessor, and described display module is used for showing the information of the air pressure in the described gas piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250134 CN202757808U (en) | 2012-05-23 | 2012-05-23 | Constant-flow air sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250134 CN202757808U (en) | 2012-05-23 | 2012-05-23 | Constant-flow air sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757808U true CN202757808U (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220250134 Expired - Lifetime CN202757808U (en) | 2012-05-23 | 2012-05-23 | Constant-flow air sampler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411802A (en) * | 2013-08-14 | 2013-11-27 | 哈尔滨东方报警设备开发有限公司 | Explosion-proof suction pump with sound and light alarming, flow rate display, and regulation functions |
| CN105258980A (en) * | 2014-07-16 | 2016-01-20 | 天津博乐科技有限公司 | Comprehensive atmosphere sampling controlling system based on double CPU |
| CN106018007A (en) * | 2016-07-19 | 2016-10-12 | 华测检测认证集团股份有限公司 | Double-channel atmosphere sampler with GPS (global positioning system) positioning module |
| CN107402145A (en) * | 2017-07-26 | 2017-11-28 | 北京中室环室内环境监测研究中心 | A kind of air sampling container and the method for sampling |
| CN107621388A (en) * | 2017-10-18 | 2018-01-23 | 深圳国技仪器有限公司 | Pinpoint lake water acquisition aircraft |
-
2012
- 2012-05-23 CN CN 201220250134 patent/CN202757808U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411802A (en) * | 2013-08-14 | 2013-11-27 | 哈尔滨东方报警设备开发有限公司 | Explosion-proof suction pump with sound and light alarming, flow rate display, and regulation functions |
| CN105258980A (en) * | 2014-07-16 | 2016-01-20 | 天津博乐科技有限公司 | Comprehensive atmosphere sampling controlling system based on double CPU |
| CN106018007A (en) * | 2016-07-19 | 2016-10-12 | 华测检测认证集团股份有限公司 | Double-channel atmosphere sampler with GPS (global positioning system) positioning module |
| CN107402145A (en) * | 2017-07-26 | 2017-11-28 | 北京中室环室内环境监测研究中心 | A kind of air sampling container and the method for sampling |
| CN107621388A (en) * | 2017-10-18 | 2018-01-23 | 深圳国技仪器有限公司 | Pinpoint lake water acquisition aircraft |
| CN107621388B (en) * | 2017-10-18 | 2024-04-12 | 深圳国技仪器有限公司 | Accurately positioned lake water-collecting aircraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |