CN108731986B - The automatic atmosphere sampler of multichannel high tower gradient and method - Google Patents
The automatic atmosphere sampler of multichannel high tower gradient and method Download PDFInfo
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- CN108731986B CN108731986B CN201810430315.8A CN201810430315A CN108731986B CN 108731986 B CN108731986 B CN 108731986B CN 201810430315 A CN201810430315 A CN 201810430315A CN 108731986 B CN108731986 B CN 108731986B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/26—Devices for withdrawing samples in the gaseous state with provision for intake from several spaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
- G01N2001/2279—Atmospheric sampling high altitude, e.g. rockets, balloons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2297—Timing devices
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Abstract
A kind of automatic atmosphere sampler of multichannel high tower gradient and method, the device includes that gradient adopts pipe, buffer gas tank and multichannel collecting end, its cardinal principle is to open large-flow air pump gas on high tower is introduced laboratory, the three-way magnetic valve on sampling pipe is controlled by procedure control unit to select mining height degree and height of sampling to switch the frequency, the flow velocity of air-flow is reduced using buffering gas tank and stablizes air pressure, pass through the multichannel collecting end being mounted on buffering gas tank, gas is directed respectively into different analysis channels, analysis detection is carried out to the Multiple components of atmosphere pollution.The device can effectively reduce man power and material's consumption of high tower observation.
Description
Technical field
The present invention relates to environmental monitoring technology fields, relate more specifically to a kind of automatic atmospheric sampling of multichannel high tower gradient
Device and method.
Background technique
Further investigation discovery to atmosphere pollution, dual shadow of the formation of atmosphere pollution by local discharge and area transmissions
It rings, therefore is only no longer satisfied the demand of Polluted areaization research in the observation that earth's surface carries out atmosphere pollution, however aircraft
Be tethered at the use of ship since cost is excessively high, operating condition is harsh, can't be as the observation method of routine.Relative to aircraft and
It is tethered at ship, although high tower position is fixed, observed altitude can be chosen at random, and observation data steady in a long-term can be obtained,
Have become the main means that atmosphere pollution is observed in city canopy at present.However, on the high tower that height is 200-300m
Placement instrument also couples there is narrow space, disadvantage difficult in maintenance, and part analyzing of organic composition instrument to be had at prime
Instrument is managed, and is not suitable for and is placed on high tower.Therefore, it is necessary to develop one kind stratification of hot gas on high tower can be introduced into indoor and energy
From the high tower gradient gas acquisition device of different pollutant analysis instrument docking.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of automatic atmosphere sampler of multichannel high tower gradient and
The gas of different height can be introduced laboratory automatically under setting condition, and introduce gas into correspondence as needed by method
Gas circuit is trapped and is handled accordingly, and relevant environment gas data can be directly obtained, can also be with gas analysis instrument pair
Connect or carry out atmospheric sample collection.
To achieve the goals above, as one aspect of the present invention, the present invention provides a kind of multichannel high tower gradients
Automatic atmosphere sampler, comprising:
Vertical gradient adopts pipe, buffering gas tank, sampling pump and control unit；
Wherein, the gradient adopts pipe and different height is provided with sampling branch pipe, and the sampling branch pipe passes through independent control respectively
The triple valve of system and the gradient adopt Guan Xianglian, for sampling in different height；
One end of the buffering gas tank is connected with the bottom end that the gradient adopts pipe, and the other end and the sampling pump pass through pipe
Road is connected, and is provided with multichannel collecting port on the buffering gas tank, for acquiring the gaseous sample of different component, each adopts
Collection port is provided with flow controller and switch；
Described control unit is for controlling the triple valve, flow controller and the switch.
Preferably, the gradient is adopted pipe and is arranged on high tower, and the height of the high tower is greater than 50m, preferably greater than 100m.
Preferably, filter screen is provided on the thief hatch of the sampling branch pipe.
Preferably, an acquisition port in the multichannel collecting port is connected with one or more gas sensors,
For monitoring the concentration of different height Atmospheric components.
Preferably, the gas sensor includes carbon monoxide transducer, ozone sensor, in NOx sensor
It is one or more.
Preferably, an acquisition port in the multichannel collecting port is provided with particulate matter filter membrane.
Preferably, the acquisition port is connected with gas concentration unit, for detecting Trace Organic Gases in Atmosphere.
Preferably, an acquisition port in the multichannel collecting port is provided with particulate matter cutting head, for acquiring
The Atmospheric particulates of different-grain diameter.
Preferably, the multichannel collecting port includes a spare acquisition port, the acquisition port and alternate channel
It is connected.
Preferably, the buffering gas tank, the flow controller of the multichannel collecting port and switch are integrated in cabinet
Interior, the surface of the cabinet is arranged in described control unit.
Preferably, the surface of the cabinet is provided with display, for showing sample information.
Preferably, it is silanization stainless steel material that the gradient, which adopts pipe and the inner surface of the buffering gas tank,.
As one aspect of the present invention, the present invention also provides a kind of automatic atmospheric sampling sides of multichannel high tower gradient
Method, the automatic atmosphere sampler of multichannel high tower gradient described in the method are sampled automatically, comprising:
The triple valve is controlled to be sampled in the first height；
The one or more acquisition ports opened in the multichannel collecting port are sampled or are analyzed, by predetermined ladder
After spending switching time, the acquisition port is closed；
The gas in gas circuit is emptied, and cleans gas circuit；
It repeats above operation, is highly sampled at other, sampling or analysis until completing all height.
Preferably, the method also includes trigger-type sampling or analytical procedure, the trigger-type samples or analytical procedure packet
Include and carry out continuous automatic sampling and analysis in a certain height, after atmosphere pollution reaches the threshold value of setting, other highly into
Row sampling or analysis.
Based on the above-mentioned technical proposal it is found that the invention has the following beneficial effects: be suitable for high tower different height gas
Acquisition and analysis；It can be to CO, O in selected high air3, NOxEqual pollutants are constantly detected, can be in selected high air
PM2.5/PM10 particulate matter is acquired, and can be acquired to organic principle in selected high air, and dock with analysis instrument；
Can be with exchange-column shift difference height of sampling, while obtaining different height continuous gas sample or corresponding pollutant component data；
CO, O in fixed height gas can also be monitored3, NOxConcentration variation is sampled by the gradient of the concentration threshold starting setting of setting
Program is analyzed, the acquisition of PM2.5/PM10 particulate matter gradient or organic principle gradient analysis are carried out.
Main device of the present invention is integrated in cabinet, is furnished with integrated control software, convenient for height of sampling, analyzes species, dense
The setting and operation for spending the parameters such as thresholding and the gradient frequency are, it can be achieved that more height, several species atmosphere pollution automatic continuous monitoring；
Gaseous sample on high tower is introduced laboratory by the present invention, is docked, can effectively be subtracted with analysis instrument by multiple sample collection terminals
Man power and material's consumption of few high tower observation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the automatic atmosphere sampler of multichannel high tower gradient of the invention.
The reference numerals are as follows in figure:
1, branch pipe is sampled；2, gradient adopts pipe；3,4,5, three-way magnetic valve；6, gas tank is buffered；7,8,9,10, solenoid valve；
11, sensor group；12, PM2.5/PM10 cutting head；13, PM2.5 filter membrane；14,15,16, flow controller；17, PM sampling connects
Mouthful；18, analyzing of organic composition interface；19, spare interface；20, big flow sampling pump；21, control panel and display；22, case
Body.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in further detail.
The invention discloses a kind of automatic atmosphere sampler of multichannel high tower gradient, which includes that gradient adopts pipe, is delayed
Gas tank and multichannel collecting end are rushed, cardinal principle is to open large-flow air pump gas on high tower is introduced laboratory, is led to
It crosses procedure control unit and controls the three-way magnetic valve on sampling pipe to select mining height degree and height of sampling to switch the frequency, using slow
Rushing gas tank reduces the flow velocity of air-flow and stablizes air pressure, by the multichannel collecting end being mounted on buffering gas tank, by gas
It is directed respectively into different analysis channels and analysis detection is carried out to the Multiple components of atmosphere pollution.
As shown in Figure 1, the automatic atmosphere sampler of multichannel high tower gradient of the invention, comprising: gradient adopts pipe 2, not
With multiple sampling branch pipes 1 are highly provided with, height of sampling is controlled by three-way magnetic valve 3,4,5；Gas tank 6 is buffered, for steady
Fixed and balance gas flow rates；Multichannel collecting end can select the acquisition and analysis mode of gas on demand.
Wherein gradient adopts the inner surface silanization stainless steel material that pipe 2 is 1/2 inch of internal diameter, is located at high tower (H > 150m)
On.Gradient adopts pipe 2 equipped with multiple three-way magnetic valves 3,4,5 (height is optional), to select height of sampling, three solenoid valve difference
It works independently.The gas production mouth for sampling branch pipe 1 fills filter screen, to prevent foreign matters from being blocked sampling pipe；End is adopted equipped with big flow gas
Sample pump 20.
Buffering gas tank 6 be located between the last one solenoid valve 5 and big flow gas samping pump 20, buffer gas tank 6 and
Gas circuit directly connects, and centre is not provided with electromagnetic switch, and tank is inner surface silanization stainless steel material, and volume 3L buffers air storage
Tank keeps gas to stablize for reducing the flow velocity of gas in gas circuit.
Buffering gas tank 6 is provided with multichannel collecting end, positioned at the four sides of gas tank.
The multichannel collecting end shares 1-4 acquisition port, and each port is equipped with solenoid valve 7,8,9,10, respectively
Detection for different constituent of atomsphere samples.
One of acquisition port is connected to flow controller 14 and gas sensor group 11 (CO, O3, NOx), for monitoring
The concentration of different height Atmospheric components changes.
Preferably, gas sensor type can according to need replacement.
Another acquisition port is connected to PM filter membrane 13 and flow controller 15, which can be used for directly collecting atmosphere gas
Body sample can also be directly connected with gas concentration instrument by analyzing of organic composition interface 18, carry out atmosphere in trace it is organic at
The analysis divided.
Another acquisition port is connected to flow controller 16 and PM2.5 cutting head 12, and PM Sampling Interface 17 is in atmosphere
The collection of aerosol sample.
Another acquisition port is only connected to flow controller, which is used for alternate channel as spare interface 19.
The buffering gas tank, multichannel collecting end and all solenoid valves, flow controller are integrated in cabinet 22.
Preferably, circuit integration is on circuit boards, controller 21 is arranged in tank surface；
Preferably, tank surface can show height of sampling equipped with display, sensor corresponding data acquires work
Make the information such as port and flow.
As another aspect of the present invention, the present invention also provides a kind of automatic atmospheric sampling sides of multichannel high tower gradient
Method uses the automatic atmosphere sampler of multichannel high tower gradient as described above to carry out the gas of the high tower different height
Automatically (or trigger-type) sampling and analysis.
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in further detail.Where it is understood that preferred embodiments are merely illustrative of the invention, without
It is to limit the scope of the invention.
Embodiment 1
As shown in Figure 1, a kind of automatic atmosphere sampler of multichannel high tower gradient, including gradient adopt pipe, gas tank is buffered
With multichannel collecting end.Its working method is to open big flow sampling pump, selects gradient monitoring by procedure control unit, if
Determine gradient switching time interval.Multichannel collecting port is selected by procedure control unit, flow is set, by acquisition port and gas
Body acquisition or analyzer connection.II, III connection of three-way magnetic valve 3 at this time, I, III connection of three-way magnetic valve 4,5, electromagnetism
Valve 7,8,9,10 is closed, and gas empties 2 minutes, cleans gas circuit；Then solenoid valve 7,8,9,10 is opened, and carries out first gradient atmosphere
The sampling or analysis of pollutant.Setting gradient switching time arrives, and solenoid valve 7,8,9,10 is closed, II, III of three-way magnetic valve 4
Connection, I, III connection of three-way magnetic valve 3,5, gas empty 2 minutes, clean gas circuit；Then solenoid valve 7,8,9,10 is opened,
Carry out the sampling or analysis of the second gradient atmosphere pollution.Setting gradient switching time arrives, and solenoid valve 7,8,9,10 is closed, threeway
II, III connection of solenoid valve 5, I, III connection of three-way magnetic valve 3,4, gas empty 2 minutes, clean gas circuit；Then electromagnetism
Valve 7,8,9,10 is opened, and the sampling or analysis of 3rd gradient atmosphere pollution are carried out.Then it is repeated in the above operation, completes ladder
Spend the acquisition and observation of continuous atmosphere pollution.The sampling of different height can recycle progress, and gradient switching time therein can
Think 5min-1h, for example, gradient switching time can be a hour as carried out Analysis of Organic Substances, such as carries out particulate matter point
Analysis, gradient switching time can be 5-10min.
Embodiment 2
The present embodiment and the difference of embodiment 1 are only that: selecting fixed height monitoring, setting prison by procedure control unit
It surveys, the acquisition and observation of fixed height atmosphere pollution.
Embodiment 3
The difference of the present embodiment and Examples 1 and 2 is only that: selecting trigger-type monitoring, setting by procedure control unit
Then concentration threshold, observed altitude select observation mode (fixed height monitoring or gradient monitoring), observing port, setting observation
Condition.II, III connection of three-way magnetic valve 3 at this time, I, III connection of three-way magnetic valve 4,5, three-way magnetic valve 7 open, 8,
9, it 10 closes, using sensor to index species (CO, the O of atmosphere pollution3, NOx) be monitored.When the gas in sample port
When the concentration that body sensor detects reaches the thresholding of setting, instrument opens the working method of embodiment 1 or 2, realizes that atmosphere is dirty
The acquisition of trigger-type Atmospheric components and detection of dye tracking.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in protection of the invention
Within the scope of.
Claims (12)
1. a kind of automatic atmosphere sampler of multichannel high tower gradient characterized by comprising vertical gradient adopts pipe, buffering
Gas tank, sampling pump and control unit；
Wherein, the gradient adopts pipe and different height is provided with sampling branch pipe, and the sampling branch pipe passes through independent control respectively
Triple valve and the gradient adopt Guan Xianglian, for sampling in different height, wherein the gradient is adopted pipe and is arranged on high tower, institute
The height for stating high tower is greater than 100m；
One end of the buffering gas tank is connected with the bottom end that the gradient adopts pipe, and the other end passes through pipeline phase with the sampling pump
Even, it is provided with multichannel collecting port on the buffering gas tank, for acquiring the gaseous sample of different component, each collection terminal
Mouth is provided with flow controller and switch；
Described control unit is for controlling the triple valve, flow controller and the switch；
Wherein, the gradient adopts pipe and the buffering gas tank is the stainless steel material of inner surface silanization.
2. the automatic atmosphere sampler of multichannel high tower gradient according to claim 1, wherein the sampling branch pipe is adopted
Filter screen is provided on sample mouth.
3. the automatic atmosphere sampler of multichannel high tower gradient according to claim 1, wherein the multichannel collecting end
An acquisition port in mouthful is connected with one or more gas sensors, for monitoring the concentration of different height Atmospheric components.
4. the automatic atmosphere sampler of multichannel high tower gradient according to claim 1, wherein the multichannel collecting end
An acquisition port in mouthful is provided with particulate matter filter membrane.
5. the automatic atmosphere sampler of multichannel high tower gradient according to claim 1, wherein the multichannel collecting end
An acquisition port in mouthful is provided with particulate matter cutting head, for acquiring the Atmospheric particulates of different-grain diameter.
6. the automatic atmosphere sampler of multichannel high tower gradient according to claim 1, wherein the multichannel collecting end
Mouth includes a spare acquisition port, which is connected with alternate channel.
7. the automatic atmosphere sampler of multichannel high tower gradient according to claim 1, wherein the buffering gas tank,
The flow controller and switch of the multichannel collecting port are integrated in cabinet, and the cabinet is arranged in described control unit
Surface.
8. the automatic atmosphere sampler of multichannel high tower gradient according to claim 3, wherein the gas sensor packet
Include one of carbon monoxide transducer, ozone sensor, NOx sensor or a variety of.
9. the automatic atmosphere sampler of multichannel high tower gradient according to claim 4, wherein the acquisition port and gas
Body enrichment facility is connected, for detecting Trace Organic Gases in Atmosphere.
10. the automatic atmosphere sampler of multichannel high tower gradient according to claim 7, wherein the surface of the cabinet
It is provided with display, for showing sample information.
11. a kind of automatic atmospheric sampling method of multichannel high tower gradient, the method utilizes any one of claim 1-10 institute
The automatic atmosphere sampler of multichannel high tower gradient is stated to be sampled automatically characterized by comprising
The triple valve is controlled to be sampled in the first height；
The one or more acquisition ports opened in the multichannel collecting port are sampled or are analyzed, and are cut by predetermined gradient
After changing the time, the acquisition port is closed；
The gas in gas circuit is emptied, and cleans gas circuit；
It repeats above operation, is highly sampled at other, sampling or analysis until completing all height.
12. the automatic atmospheric sampling method of multichannel high tower gradient according to claim 11, wherein the method also includes
Trigger-type sampling or analytical procedure, the trigger-type sampling or analytical procedure are included in a certain height and continuously sample and divide automatically
Analysis starts gradient or fixed height is adopted after the numerical value of gas sensor shows that atmosphere Conventional pollution reaches the threshold value of setting
Sample or analysis program.
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