CN109253899A - The multiple instruments integrated moveable of atmosphere pollution on-line monitoring samples cabin - Google Patents
The multiple instruments integrated moveable of atmosphere pollution on-line monitoring samples cabin Download PDFInfo
- Publication number
- CN109253899A CN109253899A CN201811415175.3A CN201811415175A CN109253899A CN 109253899 A CN109253899 A CN 109253899A CN 201811415175 A CN201811415175 A CN 201811415175A CN 109253899 A CN109253899 A CN 109253899A
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- China
- Prior art keywords
- supervisor
- head
- sampling
- connecting tube
- isokinetic sampling
- Prior art date
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Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a kind of multiple instruments integrated moveables of atmosphere pollution on-line monitoring to sample cabin, including cabinet, is provided with air-conditioning system, lighting system and mounting platform in cabinet；The sampling manifold system includes total sampling head, constant speed part flow arrangement and bypass line, the constant speed part flow arrangement includes supervisor, being responsible for tail portion can the removable connection between adjacent supervisor, a diffluence pass is provided on every section supervisor, branch pipeline connects diffluence pass, and supervisor head is provided with isokinetic sampling's head, isokinetic sampling's head and the concentric setting of supervisor, gas part in total sampling head enters isokinetic sampling's head, and another part enters diffluence pass；Supervisor is located at the first connecting tube section below and is provided with gas expansion channel, and inflation channel is connected to the entrance of next section supervisor；Bypass line reconnects monitoring instrument.Sampling room mobility strong, movement is rapid, deployment is convenient, flexible.Isokinetic sampling's head guarantees that particle components are identical as particle components in next stage supervisor in the gas of sample diffluence pass.
Description
Technical field
The present invention relates to atmosphere environment supervision fields, and in particular to a kind of multiple instruments of atmosphere pollution on-line monitoring are integrated can
Mobile sampling cabin.
Background technique
With the development of modern industry and transportation, people's particulate matter of continued emissions into atmosphere is more and more,
The phenomenon that causing atmosphere pollution is increasingly severe, research shows that aerosol reduces visibility, rainfall distribution is influenced, to human survival
The harm of environment has increasingly sharpened, and the air of long-term sucking pollution can also cause chronic bronchitis, bronchial asthma, lung cancer
Etc. many diseases.
Aerosol is got more and more attention at present, and the particle components of aerosol, to carry out the problems such as source distribution be current
The research hotspot of atmospheric aerosol, and the analysis of the different characteristics of aerosol usually requires the more instruments while work of different principle
Make.However there are websites to fix for existing atmospheric monitoring system, and surrounding enviroment are required with high, measurement data inaccuracy, it is different
The problems such as comparativity difference between instrument data, influence the reliability of result.Common sampling general pipeline, can be due to each instrument flow
Inconsistent so that turbulent flow occurs for air-flow in general pipeline, collision probability increases between particle, is unable to ensure the authenticity of sample, Zong Guanling
Activity is lower, poor to the applicability of different instruments.
Summary of the invention
The technical problem to be solved by the present invention is to existing sampling system sampled points to fix, measurement data inaccuracy, sampling
The technical problems such as turbulent, sample is untrue occur for pipe interior air-flow when pipe connects more flow inconsistent instruments.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: a kind of atmosphere pollution on-line monitoring it is more
Instrument integration is removable to sample cabin, including cabinet, is provided with air-conditioning system, lighting system and mounting platform in cabinet, installs
Sampling manifold system is provided on platform, for sampling manifold system for acquiring environmental aerosols, the air-conditioning system setting is multiple
Air outlet is used for even regulation case body temperature；The sampling manifold system includes total sampling head, constant speed part flow arrangement and branch
Road pipeline, the constant speed part flow arrangement include the supervisor that several sections are vertically arranged, and supervisor tail portion can be removable between adjacent supervisor
Formula connection, every section, which is responsible for, is provided with a diffluence pass, and branch pipeline connects diffluence pass, and supervisor head is provided with a constant speed
Sampling head, isokinetic sampling's head pass through in the first connecting tube setting supervisor with concentric setting, isokinetic sampling's head is responsible for, the first connection
It protrudes at the top of pipe in isokinetic sampling's head and seals therewith, the bottom outer wall and supervisor's inner wall sealing of the first connecting tube are always adopted
Gas part in sample head enters isokinetic sampling's head, and another part enters diffluence pass；Supervisor is located at the first connecting tube section below
It is provided with gas expansion channel, inflation channel is connected to the entrance of next section supervisor；Bypass line reconnects monitoring instrument.
Further, drying tube, flow sensor and Temperature Humidity Sensor are additionally provided in the bypass line.
Further, it is equipped with annular groove on the inside of the top and bottom of supervisor, sealing ring, adjacent supervisor are set in groove
Head and tail inner side be provided with perforation two supervisor the second connecting tubes, the second connecting tube and supervisor inner wall and sealing ring it
Between tight fit.
Further, tapered at the gas access of isokinetic sampling head, and bottom is provided with columnar notch, first
Connecting tube protrudes into column notch and its end face and the end face of column notch offset, the first connecting tube or isokinetic sampling's head
In be also provided with annular groove, in annular groove be arranged sealing ring for seal first connection pipe outer wall and isokinetic sampling head between
Gap；Inlet radius flow set according to needed for the diffluence pass of corresponding supervisor of isokinetic sampling's head.
Further, the gas flaring channel of supervisor is in isosceles trapezoid by any section of axial line, and this is trapezoidal
Waist and the angle of axial line be 6~7.5 °.
Further, the cabinet is container, is provided with ventilation hole on container bottom board, and mounting platform and bottom it
Between be provided with damping air cushion, damping air cushion is mounted on container bottom board by fixing bolt.
Further, the inner wall of container is provided with insulating layer.
From above-mentioned technical proposal it can be seen that the invention has the following advantages that sampling room mobility strong, mobile rapid, deployment
It is convenient, flexible.Adaptability is good, not by the control of geographical conditions, can carry out multiple spot multiple instruments while monitor, and it is true to improve sample
Property.Charge air flow direction is vertical, and keeps laminar flow before entering sampling head, effectively prevents sampling loss, while using thin-walled
Isokinetic sampling's mouth reduces influence of the possible small turbulent flow to sampling efficiency in sampling process, to guarantee the gas of sample diffluence pass
Particle components are identical as particle components in next stage supervisor in body, increase the authenticity of sample.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of constant speed part flow arrangement in the present invention；
It is the coefficient of partial resistance of diffuser and the relation curve at flaring angle that Fig. 3, which is in the present invention,；
Fig. 4 is flaring angle and local losses relation curve；
Fig. 5 is flaring angle and pipe range relation curve.
Specific embodiment
A specific embodiment of the invention is illustrated below in conjunction with attached drawing.
As shown, the multiple instruments integrated moveable sampling cabin that atmosphere pollution of the invention is monitored on-line includes cabinet 11,
Cabinet is formed by Container Reconstruction, inner part working region and distribution region, distribution area be equipped with air-conditioning system, distribution box and
Cable, the fixed frame on the bottom plate of working region set mounting platform 10, on-line monitoring equipment 9 and sampling main pipe line in rack
System 14 is fixed on mounting platform, and top is equipped with air-conditioning system and lighting system, is equipped with humiture monitoring device in room.With packaging
It opens the door as installation all steel ventilating board in equipment introduction container as floor the tail portion of case；Pacify in container body top exterior walls
Equipped with photovoltaic generating system and equipped with that can load and unload total sampling head, total sampling head is PM10 cutting head or PM2.5 cutting head or inverted U
Curved sampling pipe.Rack is multilayered structure, and is divided into multiple installation spaces according to the quantity of on-line monitoring equipment and volume.Rack
Bottom sets multiple damping air cushions, and damping air cushion is mounted on container bottom board by fixing bolt.Decorating interior wall between monitoring
Heat insulation foam is clogged between container corrugated plate covering.Small-sized weather monitoring station can also be set in container top, for supervising
Survey the parameters such as temperature and humidity, wind speed, wind direction, the air pressure in the region.
Sampling room mobility strong, movement is rapid, deployment is convenient, flexible.Adaptability is good, not by the control of geographical conditions.Air-conditioning
System adds INSULATION DESIGN, so that instrumental working conditions are stablized, temperature control is convenient, air-conditioner air outlet 15 be located at sampling roof portion surrounding and
Ventilating floor ensure that cold air is uniform in room, and blow-through air inlet pipeline is avoided to generate condensed water.Rack is carried out in internal container
It is whole fixed, interior instrument or rack are damaged during can effectively prevent lifting, transport.
Sampling manifold system 14 includes total sampling head, constant speed point for acquiring environmental aerosols, the sampling manifold system
Device and bypass line are flowed, the constant speed part flow arrangement includes several section supervisors 2, and supervisor's joint number selects according to actual needs,
In present embodiment by two sections supervisor for, supervisor tail portion can the removable connection between adjacent supervisor, head section supervisor entrance
Place is provided with the pipeline of long 30cm.It is provided with a diffluence pass 8 on every section supervisor, diffluence pass 8 is used for external monitoring instrument, in master
Tube head is provided with isokinetic sampling's head 6, and isokinetic sampling's head 6 and 2 concentric settings of supervisor, isokinetic sampling's head 6 pass through first
Connecting tube 7 is set in supervisor 2, and the top of the first connecting tube 7 is protruded into isokinetic sampling's head 6 and sealed therewith, the first connection
The bottom outer wall and supervisor's 2 inner walls sealing of pipe 7, enter isokinetic sampling's head 6 into the gas part of supervisor 2, another part enters
Diffluence pass 8；Supervisor 2 is located at the first connecting tube section below and is provided with gas flaring channel 4, and flaring channel 4 is connected to next section master
The entrance of pipe.Bypass line connects diffluence pass, is additionally provided with drying tube 12, flow sensor and temperature and humidity in bypass line 13
Sensor.
Be equipped with annular groove 5 on the inside of the top and bottom of supervisor 2, sealing ring be set in groove, adjacent supervisor head and
Tail inner side is provided with the second connecting tube 3 of two supervisors of perforation, tight between the second connecting tube 3 and supervisor's inner wall and sealing ring
Cooperation, is connected the two using the second connecting tube.To realize multistage fixation.
It is tapered at the gas access of isokinetic sampling's head 6, and bottom is provided with columnar notch, the first connecting tube is stretched
Enter in column notch and its end face and the end face of column notch offset, is also provided in the first connecting tube 7 or isokinetic sampling's head
Sealing ring is being arranged for sealing the gap between the first connection pipe outer wall and isokinetic sampling's head in annular groove in annular groove.
Inlet radius flow set according to needed for the diffluence pass of corresponding supervisor of isokinetic sampling's head.Isokinetic sampling's head flow velocity Vx=
qx/sx, corresponding gas flow rate Vx=Q in the same horizontal position general pipelinex-1/ S, wherein qxFor the sampling flow (root of isokinetic sampling's head
Depending on instrument flow), sxFor isokinetic sampling's head thief hatch inner section product, Qx-1For corresponding discharge in the same horizontal position general pipeline,
S is general pipeline inner section product.Isokinetic sampling's head thief hatch inner section product sxIt is equal to the ratio between isokinetic sampling's device inner section product S
Flow q at isokinetic sampling's head thief hatchxWith the same horizontal position device total flow Qx-1The ratio between.Therefore it can determine isokinetic sampling
Head specification.The device strong flexibility detachably can be suitable for the integrated sampling of different instrument quantities by adjusting supervisor's joint number.
It is suitable for the different instrument of flow by adjusting isokinetic sampling's head specification.
Enter gas flaring channel 4 after the first connecting tube into the gas after isokinetic sampling's head.If pipe diameter is prominent
So expansion, fluid abruptly enters big pipeline by small pipeline, and due to effect of inertia, fluid particle can not be at unexpected expansion at once
It is attached at wall surface, it may appear that a series of vortex not only has lost the mechanical energy of air-flow, be also easy to when acquiring aerosol at this time
Cause the disorder of particulate, occur particle touch simultaneously, the interactions such as separation influence aerosol shape.On the other hand, gas
Flow velocity is necessarily redistributed when entering big pipe from tubule, is increased the relative motion of gas, is led to gas and contained and aerosol
It is further to hit friction.To can all have local losses in very long a distance of disappearance since vortex.
We should make as far as possible air-flow held stationary in general pipeline design process and pipeline is not easy too long, can use local resistance
Power loss selects optimal flaring angle (to refer to and appoint by the axial line in flaring channel as the foundation for measuring sampling pipe air flow condition
The waist for the isosceles trapezoid that one section is formed and the angle of axial line, the also referred to as angle of flare) local resistance is effectively reduced, avoid because
Generating vortex influences the form of sampling particle.Fig. 3 is that the coefficient of partial resistance of diffuser and the relationship for expanding gradually angle are bent in the present invention
Line.From the figure 3, it may be seen that when 2.5 ° 7.5 ° of < θ <, coefficient of partial resistance is minimum for certain caliber ratio.But work as angle of flare
When degree is less than 2.5 °, divergent segment is too long, it is larger to will lead to frictional resistance, and longer pipeline need to occupy very large space, to gas
Colloidal sol samples extremely inconvenient for general pipeline.Angle, which is greater than 7.5 °, can cause gas wall flow separation, shape poor so as to cause pressure recovery
At vortex.
Aerosol passes through after constant speed part flow arrangement in this sampling general pipeline design enters next stage sampling by diffuser, this
Diffuser inlet diameter d in embodiment1=8mm, outlet diameter d2=31mm, as flow 25.3L/min, different flaring angle θ meters
Local losses (the h of calculatingj) as shown in figure 4, the local losses variation of pipeline is more steady, part when flaring angle is less than 8 °
Loss is smaller, and air-flow is also relatively stable.
Fig. 5 is the relationship at flaring angle and flaring passage length, when angle is greater than 6 °, can substantially reduce pipe range, preferably
When being 7 °.To sum up, the angle at the flaring angle should be greater than 6 ° less than 7.5 °, and preferably 7 °.
Entire sampling inside pipe wall is polished, and is made its inner wall smooth, is reduced the frictional resistance in aerosol transmission process,
It avoids particulate matter from being attached on inside pipeline and causes pipeline blockage and particle loss.Supervisor's external wall cross-section product is designed to positive six side
Shape, appearance is more beautiful, and outer wall is made to have plane, convenient for being fixed by screws on rack or wall.It cuts open the longitudinal direction of diffluence pass
Face is rectangle.
Claims (7)
1. a kind of multiple instruments integrated moveable of atmosphere pollution on-line monitoring samples cabin, including cabinet, it is characterised in that: in cabinet
It is inside provided with air-conditioning system, lighting system and mounting platform, mounting platform is provided with monitoring instrument, monitoring instrument connection sampling
Manifold system, sampling manifold system is for acquiring environmental aerosols and by the sample delivery of acquisition to monitoring instrument, the air-conditioning
System head surrounding is arranged multiple air outlets and is used for even regulation case body temperature；The sampling manifold system includes total sampling
Head, constant speed part flow arrangement and bypass line, the constant speed part flow arrangement include the supervisor that several sections are vertically arranged, and are responsible for tail portion
Can the removable connection between adjacent supervisor, is provided with a diffluence pass on every section supervisor, diffluence pass is used for external monitoring instrument,
Supervisor head is provided with isokinetic sampling's head, isokinetic sampling's head passes through first with concentric setting, isokinetic sampling's head is responsible for
In connecting tube setting supervisor, protrudes into isokinetic sampling's head and seal therewith, the bottom of the first connecting tube at the top of the first connecting tube
Portion's outer wall and supervisor's inner wall sealing, enter isokinetic sampling's head into the gas part of supervisor, another part enters diffluence pass；Supervisor
First connecting tube section below is provided with gas flaring channel, gas flaring channel is connected to the entrance of next section supervisor；Branch
Road pipeline reconnects monitoring instrument.
2. the multiple instruments integrated moveable of atmosphere pollution on-line monitoring according to claim 1 samples cabin, it is characterised in that:
Drying tube, flow sensor and Temperature Humidity Sensor are additionally provided in the bypass line.
3. the multiple instruments integrated moveable of atmosphere pollution on-line monitoring according to claim 1 samples cabin, it is characterised in that:
It is equipped with annular groove on the inside of the top and bottom of supervisor, sealing ring is set in groove, adjacent supervisor head and tail inner side are set
It is equipped with the second connecting tube of two supervisors of perforation, tight fit between the second connecting tube and supervisor's inner wall and sealing ring.
4. the multiple instruments integrated moveable of atmosphere pollution on-line monitoring according to claim 3 samples cabin, it is characterised in that:
It is tapered at the gas access of isokinetic sampling's head, and bottom is provided with columnar notch, the first connecting tube protrudes into column and lacks
In mouthful and its end face and the end face of column notch offset, and are also provided with annular groove in the first connecting tube or isokinetic sampling's head,
Sealing ring is being set in annular groove for sealing the gap between the first connection pipe outer wall and isokinetic sampling's head；The constant speed is adopted
The inlet radius of sample head flow set according to needed for the diffluence pass of corresponding supervisor.
5. the multiple instruments integrated moveable of atmosphere pollution on-line monitoring according to claim 1 samples cabin, it is characterised in that:
The gas flaring channel of supervisor is in isosceles trapezoid by any section of axial line, and the angle of the trapezoidal waist and axial line
It is 6~7.5 °.
6. the multiple instruments integrated moveable of atmosphere pollution on-line monitoring according to claim 1 samples cabin, it is characterised in that:
The cabinet forms for Container Reconstruction, ventilation hole is provided on container bottom board, and be provided between mounting platform and bottom
Damping air cushion, damping air cushion are mounted on container bottom board by fixing bolt.
7. the multiple instruments integrated moveable of atmosphere pollution on-line monitoring according to claim 6 samples cabin, it is characterised in that:
The inner wall of container is provided with insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415175.3A CN109253899B (en) | 2018-11-23 | 2018-11-23 | Multi-instrument integrated movable sampling cabin for on-line monitoring of atmospheric pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415175.3A CN109253899B (en) | 2018-11-23 | 2018-11-23 | Multi-instrument integrated movable sampling cabin for on-line monitoring of atmospheric pollution |
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| Publication Number | Publication Date |
|---|---|
| CN109253899A true CN109253899A (en) | 2019-01-22 |
| CN109253899B CN109253899B (en) | 2023-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811415175.3A Active CN109253899B (en) | 2018-11-23 | 2018-11-23 | Multi-instrument integrated movable sampling cabin for on-line monitoring of atmospheric pollution |
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