CN109342161A - A kind of two-stage multichannel atmosphere collection tube road filtration system - Google Patents
A kind of two-stage multichannel atmosphere collection tube road filtration system Download PDFInfo
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- CN109342161A CN109342161A CN201811358769.5A CN201811358769A CN109342161A CN 109342161 A CN109342161 A CN 109342161A CN 201811358769 A CN201811358769 A CN 201811358769A CN 109342161 A CN109342161 A CN 109342161A
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- 238000001914 filtration Methods 0.000 title claims abstract description 40
- 239000012528 membrane Substances 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000178 monomer Substances 0.000 claims description 7
- 238000005273 aeration Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000004087 circulation Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 12
- 238000004458 analytical method Methods 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000011045 prefiltration Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 25
- 230000003287 optical effect Effects 0.000 description 7
- 239000013618 particulate matter Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005374 membrane filtration Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000270730 Alligator mississippiensis Species 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
Abstract
The present invention relates to the prefilter technical fields of atmosphere on-line analysis, disclose a kind of two-stage multichannel atmosphere collection tube road filtration system, including multichannel filter element, multichannel filter element includes the filter group with multiple filter chambers, and solenoid valve is arranged on each filter chamber；Each solenoid valve makes one of solenoid valve in the open state, remaining is in closed state by the opening and closing sequence of controller independent control solenoid valve and solenoid valve switching time interval.Multichannel filter element preposed whirlwind filter device is to remove bulky grain pollutant and liquid water in gas sample.The present invention is while having evaded gas concentration high frequency signal attenuation effect and having become larger, effective filtration time of gas analyzer front filtration system is set to be multiplied, and evades liquid water in gas sample and enter instrument and cause instrument damage, the time for greatly prolonging analysis instrument continuous service improves field inspection quality.
Description
Technical field
The present invention relates to the prefilter technical fields of atmosphere on-line analysis, and in particular to a kind of two-stage multichannel atmosphere is adopted
Collector road filtration system.
Background technique
Ecology, environmental science, the related fieldss such as learn scientific research or observation in, it is often necessary to use quick sound
The instrument answered is to micro in atmosphere and trace gas ingredient (CO in such as atmosphere2、CH4、N2O concentration and related isotope ratio etc.)
Carry out continuous on-line analysis and monitoring.It is this kind of at present that laser is mostly used to micro in atmosphere and trace gas composition measurement instrument
Technology.To improve the sensitivity measured to trace gas, need gas sample through Pipeline transport into particular measurement chamber, to increase
Light path and reduction interference.This kind of in-line analyzer based on laser determination technology when carrying out trace gas composition measurement, into
Solid particulate matter and the liquid water for entering chamber are very sensitive, and the presence of liquid water can cause to damage to some components of instrument.
It is filtered before gas enters chamber frequently with front filtration system at present, so that chamber keeps clear enough
It is clean, to reach the precision and accuracy of measurement.
Existing front filtration system mainly uses cartridge filter or multistage board-like changes membrane filtration system.Cylinder filter
That tubular element is placed in filter cylinder, gas from filter core center enter, after filtration core inner surface reach filter core outer surface with
Discharge is collected behind space between filter cylinder.Cartridge filter can increase the contact area of gas and filter core, to extend to solid
Effective filtration time of particulate matter.And installed in pipeline it is multistage it is board-like change membrane filtration system, for single-stage filtering, increase
Blooming filtering series can improve the efficiency of filtering to a certain degree.
But film filters series and increases and will increase pipeline vapour lock, and as runing time increases, vapour lock is increasing, makes in chamber
Air pressure be difficult to keep stable state, cause cleaning, repair rate increase；Cartridge filter filter chamber volume is often larger, meeting
The mixed process of gas is generated, thus the case where will lead to acquisition gas concentration high frequency signal attenuation generation.
Summary of the invention
Based on problem above, the present invention provides a kind of two-stage multichannel atmosphere collection tube road filtration system, and the present invention evades
During being filtered to Atmospheric Grains matter, the volume of the filter chamber larger mixing for being easy to produce gas and cause to acquire
Gas concentration high frequency signal attenuation effect becomes larger problem；Effective filtration time of multichannel filter element is set to be multiplied simultaneously,
Replacement filter membrane frequency is effectively reduced, the time of analysis instrument continuous service is extended.
In order to solve the above technical problems, the present invention provides following technical schemes:
A kind of two-stage multichannel atmosphere collection tube road filtration system, including being set between gas production mouth and instrument air inlet
Multichannel filter element, multichannel filter element include the filter group being made of multiple filter chambers being separated from each other；Filter
Group is provided with inlet end gas-distributing pipe and outlet side gas-distributing pipe, inlet end gas-distributing pipe and outlet side gas-distributing pipe include supervisor and with mistake
The corresponding shunt pipe of filter chamber, inlet end gas-distributing pipe, outlet side gas-distributing pipe pass through the every of shunt pipe and filter group respectively
A filter chamber two sides connection；The supervisor of inlet end gas-distributing pipe is connected to gas production mouth, the supervisor of outlet side gas-distributing pipe and instrument air inlet
Mouth connection；Filter group is provided with solenoid valve block, and solenoid valve block includes for each filter chamber ventilation of independent control or dying
Solenoid valve；Solenoid valve block is connected with the controller that can be controlled each solenoid valve, and controller is used for each electricity of independent control
Magnet valve circulating open close, and within a control period, when one of filter chamber is in aeration status, remaining filter chamber is located
In the state of dying；The control parameter of controller includes solenoid valve opening and closing sequence, solenoid valve switching time interval.
Further, be provided with can be to the governor that gas flow rate is adjusted for the air inlet of each filter chamber or gas outlet
One.
Further, being provided on inlet end gas-distributing pipe or outlet side gas-distributing pipe can be to the speed regulation that gas flow rate is adjusted
Device two, governor two are located on the supervisor of inlet end gas-distributing pipe or the supervisor of outlet side gas-distributing pipe.
Further, filter group includes bottom plate, and filter chamber includes the groove being set on bottom plate, is equipped in groove
Filter membrane is provided with the top plate that can seal groove on bottom plate；The gas-guide tube being connected to groove is respectively arranged on bottom plate, top plate,
Gas-guide tube is connected to corresponding shunt pipe respectively.
Further, the number of recesses on bottom plate is 3~15, is provided with multiple filter membranes, each filter in each groove
The aperture of film is sequentially reduced along airflow direction；Porous support plate is provided in each groove between filter membrane and bottom portion of groove, is propped up
It is provided with lower sealing ring between fagging and bottom portion of groove, upper sealing ring is provided between filter membrane and top plate.
Further, cyclonic filter unit, whirlwind mistake are provided between the inlet end of multichannel filter element and gas production mouth
Filter unit includes cyclone filter, and cyclone filter includes cylinder, and cylinder top is equipped with top cover, close to top cover on cylinder lateral wall
Position is equipped with the air inlet pipe being connected to gas production mouth along a tangential direction；Cylinder body bottom opening, opening is connected with and cylinder lumen
The conically shaped of connection, the heavy caliber edge and cylinder body bottom open edge of conically shaped are tightly connected, and the small-bore one end of conically shaped connects
It is connected to the collecting chamber being connected to taper tube inner chamber；Exhaust tube is provided at the top of cylinder, the bottom of exhaust tube passes through the top cover of cylinder
And it is located at cylinder lumen；One end that exhaust tube is located above top cover is connected to the supervisor of inlet end gas-distributing pipe.
Further, it is connected respectively by triple valve one, triple valve two between the air inlet pipe and exhaust tube of cyclone filter
There is pipeline one.
Further, pipeline two is connected with by triple valve three on the supervisor of inlet end gas-distributing pipe, pipeline two is far from threeway
One end of valve three is connected to the supervisor of outlet side gas-distributing pipe, is provided with monomer strainer on pipeline two.
Further, being provided on pipeline two can be to the governor one that gas flow rate is adjusted.
Compared with prior art, the beneficial effects of the present invention are: the present invention is using the more of multiple independent filter chamber compositions
Channel filtration unit carries out particulate matter in gas and is filtered, using the solenoid valve of controller successively switch filtering chamber when filtering
Folding realizes that single filter chamber is successively filtered, and has evaded the larger mixing for being easy to produce gas of volume of filter chamber and has caused
Acquisition gas concentration high frequency signal attenuation effect becomes larger problem, while making the filter chamber of multichannel filter element successively independent mistake
Filter, makes filtration time be multiplied, and effectively reduces replacement filter membrane frequency, extends the time of analysis instrument continuous service.Simultaneously
The problem of liquid water in air enters instrument and leads to apparatus damage has also effectively been evaded in the setting of cyclonic filter unit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the two-stage multichannel atmosphere collection tube road filtration system of Examples 1 and 2；
Fig. 2 be 1 inlet end gas-distributing pipe of embodiment, outlet side gas-distributing pipe, filter group connection schematic diagram；
Fig. 3 is the structural schematic diagram of 1 filter group of embodiment；
Fig. 4 is the structural schematic diagram of 1 cyclone filter of embodiment；
Fig. 5 is the top view of 1 cyclone filter of embodiment；
Fig. 6 is to record what the methane concentration detected changed over time in the quick methane analyser of LGR 30 days in embodiment 2
Figure；
Fig. 7 is what the optical cavity ring-down time recorded in the quick methane analyser of LGR 30 days in embodiment 2 changed over time
Figure；
Fig. 8 is the figure that the optical cavity air pressure recorded in the quick methane analyser of LGR 30 days in embodiment 2 changes over time；
Fig. 9 is the figure that the optical cavity temperature recorded in the quick methane analyser of LGR 30 days in embodiment 2 changes over time；
Wherein: 1, gas production mouth；2, instrument air inlet；3, multichannel filter element；4, filter chamber；5, filter group；6, into
Gas end gas-distributing pipe；7, outlet side gas-distributing pipe；8, solenoid valve block；9, solenoid valve；10, controller；11, governor one；12, governor
Two；13, bottom plate；14, groove；15, filter membrane；16, top plate；17, gas-guide tube；18, support plate；19, lower sealing ring；20, upper sealing
Ring；21, cyclonic filter unit；22, cyclone filter；23, cylinder；24, air inlet pipe；25, conically shaped；26, collecting chamber；27, it arranges
Inflator；28, triple valve one；29, triple valve two；30, pipeline one；31, triple valve three；32, pipeline two；33, monomer strainer.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1:
Referring to Fig. 1-3, a kind of two-stage multichannel atmosphere collection tube road filtration system, including it is set to gas production mouth 1 and instrument
Multichannel filter element 3 between air inlet 2, multichannel filter element 3 include being made of 8 filter chambers being separated from each other 4
Filter group 5；Filter group 5 is provided with inlet end gas-distributing pipe 6 and outlet side gas-distributing pipe 7, inlet end gas-distributing pipe 6 and outlet side point
Tracheae 7 includes that supervisor and shunt pipe corresponding with filter chamber 4, inlet end gas-distributing pipe 6, outlet side gas-distributing pipe 7 lead to respectively
Shunt pipe is crossed to be connected to 4 two sides of each filter chamber of filter group 5；The supervisor of inlet end gas-distributing pipe 6 is connected to gas production mouth 1,
The supervisor of outlet side gas-distributing pipe 7 is connected to instrument air inlet 2；Filter group 5 is provided with solenoid valve block 8, and solenoid valve block 8 includes using
In each solenoid valve 9 filter chamber 4 ventilation or died of independent control；Solenoid valve block 8, which is connected with, to control each solenoid valve 9
The controller 10 of system, controller 10 are used for each 9 circulating open close of solenoid valve of independent control, and within a control period, wherein
When one filter chamber 4 is in aeration status, remaining filter chamber 4 is in the state of dying；The control parameter of controller 10 includes
9 opening and closing of solenoid valve sequence, solenoid valve 9 switching time interval.
In the present embodiment, atmosphere is after gas production mouth 1 enters filter chamber 4, and particulate matter therein is filtered, filtered gas
Body, which enters in analyzer, to be analyzed, and is controlled solenoid valve 9 by controller 10 and is opened and closed, including 9 opening and closing of solenoid valve sequence, solenoid valve
9 switching time intervals and cycle-index, make one of filter chamber 4 in aeration status when, remaining filter chamber 4 is in
It dies state；When the atmosphere of acquisition enters multichannel filter element 3, only one each filter chamber 4 is in aeration status, to big
Gas is filtered, and efficiently reduces the volume of filter chamber 4, evaded filter chamber 4 volume it is larger when be easy to produce gas
It mixes and causes to acquire the problem of gas concentration high frequency signal attenuation effect becomes larger；The independent circulations of filter chamber 4 multiple simultaneously make
With any one channel is problematic, does not influence other channels, and the shortage of data time greatly reduces；Keep multichannel filtering single
Member 3 effective filtration time be multiplied, effectively reduce replacement 15 frequency of filter membrane, extend analysis instrument continuous service when
Between.
The air inlet of each filter chamber 4 or gas outlet be provided with can to the governor 1 that gas flow rate is adjusted, by
In tiny differences such as length of pipe, the component vapour locks of different filter chambers 4, air pressure in instrument when may cause switching pipeline
Variation.Make each filter chamber 4 for adjusting the air velocity of each filter chamber 4 by increasing governor 1 in each filter chamber 4
In vapour lock it is consistent, to eliminate the vapour lock difference of each filter chamber 4.Governor 1 is set to outlet side gas-distributing pipe in embodiment
On 7 shunt pipe, realizes the air velocity for adjusting each filter chamber 4, keep the vapour lock in each filter chamber 4 consistent, to eliminate each mistake
The vapour lock difference of filter chamber 4；On the basis of without departing from substantive content of the invention, governor 1 is set to inlet end gas-distributing pipe 6
Shunt pipe on also can be realized adjust air velocity to eliminate each filter chamber 4 vapour lock difference purpose.
Be provided on inlet end gas-distributing pipe 6 or outlet side gas-distributing pipe 7 can to the governor 2 12 that gas flow rate is adjusted,
Governor 2 12 is located on the supervisor of inlet end gas-distributing pipe 6 or the supervisor of outlet side gas-distributing pipe 7, enters analyzer to control to adjust
In air pressure, meet make into analyzer atmosphere meet detection needed for stable air velocity.By governor in embodiment
2 12 are set on the supervisor of inlet end gas-distributing pipe 6 or the supervisor of outlet side gas-distributing pipe 7, are entered in analyzer with realizing to adjust
Air pressure enters air velocity in analyzer, on the basis of without departing from substantive content of the invention, governor 2 12 to stablize
It may be disposed at any position on the main line of filtration system, so that into filtration system or the air-flow for entering instrument first through adjusting
Fast device 2 12 carries out flow velocity adjusting, also can be realized the air pressure adjusted into analyzer and enters air-flow in analyzer to stablize
The purpose of speed.
Referring to Fig. 1 and Fig. 3, filter group 5 includes bottom plate 13, and filter chamber 4 includes the groove 14 being set on bottom plate 13, recessed
The filter membrane 15 being equipped in slot 14 is provided with the top plate 16 that can seal groove 14 on bottom plate 13；On bottom plate 13, top plate 16 respectively
It is provided with the gas-guide tube 17 being connected to groove 14, gas-guide tube 17 is connected to corresponding shunt pipe respectively.Groove on bottom plate 13
14 quantity are 8, are provided with multiple filter membranes 15 in each groove 14, the aperture of each filter membrane 15 successively subtracts along airflow direction
It is small；Porous support plate 18, support plate 18 and 14 bottom of groove are provided in each groove 14 between 14 bottom of filter membrane 15 and groove
It is provided with lower sealing ring 19 between portion, upper sealing ring 20 is provided between filter membrane 15 and top plate 16.Using aperture along airflow direction
The filter membrane 15 being sequentially reduced has been evaded the problem of resulting in blockage when being filtered using single aperture filter membrane 15, improved simultaneously
To the filter efficiency of molecule；The setting of support plate 18 can reduce the deformation that filter membrane 15 is generated in gas flow at high rates,
Prevent filter membrane 15 from being broken through, to further ensure the filter effect of membrane filter.
It needs to be noted that work principle of filter be under motive force or other external forces suspension (or containing solid particle
Gas) in liquid (or gas) through the filter medium with fine duct, solid particle and other substances are situated between by filtering
Matter retention, thus the operation for separating solid and other substances with liquid (or gas).Therefore, in without departing from essence of the present invention
On the basis of appearance, other filter devices with fine duct filter medium, such as multiple board-like membrane filters or multiple cylinders
Formula filter all can serve as to have the filter device of fine duct filter medium to be applied to the present invention.
Referring to Fig. 1, Fig. 4 and Fig. 5, cyclonic filter list is provided between the inlet end and gas production mouth 1 of multichannel filter element 3
Member 21, cyclonic filter unit 21 include cyclone filter 22, and cyclone filter 22 includes cylinder 23, and 23 top of cylinder is equipped with top
It covers, the air inlet pipe 24 being connected to gas production mouth 1 is being installed along a tangential direction close to top cover position on 23 side wall of cylinder；23 bottom of cylinder
Portion's opening, opening are connected with the conically shaped 25 being connected to 23 inner cavity of cylinder, the heavy caliber edge and 23 bottom of cylinder of conically shaped 25
Portion's open edge is tightly connected, and the small-bore one end of conically shaped 25 is connected with the collecting chamber 26 being connected to 25 inner cavity of conically shaped；Cylinder
23 tops are provided with exhaust tube 27, and the bottom of exhaust tube 27 passes through the top cover of cylinder 23 and is located at 23 inner cavity of cylinder；Exhaust tube 27
One end above top cover is connected to the supervisor of inlet end gas-distributing pipe 6.The atmosphere of particulate matter and liquid water is carried with one
Fixed speed is entered in cylinder 23 by air inlet pipe 24 along 23 inner wall tangential direction of cylinder, and forms eddy flow in cylinder 23；Big
Grain substance and liquid water are gradually close to 23 inner wall of cylinder under the action of the centrifugal force, and progress into cylinder in gravity, outer gas stream
It is mobile to 23 bottom of cylinder and conically shaped 25 in the shape of a spiral under the downward thrust generated in body 23, last large particulate matter
And liquid water enters collecting chamber 26；Air-flow after being cleaned is moved upward through the rebound of 25 side wall of conically shaped, and by exhaust tube 27
Gas-liquid, solid separation are realized in discharge；The gas increased in pipeline when large particle confrontation membrane filtration system results in blockage is evaded
The problem of resistance, reduces frequency of maintenance to further extend the time that instrument is effectively run, and effectively evaded liquid water into
The problem of entering to cause data interference, apparatus damage in subsequent analysis process.
It is connected respectively by triple valve 1, triple valve 2 29 between the air inlet pipe 24 and exhaust tube 27 of cyclone filter 22
There is pipeline 1.The setting of pipeline 1 can be when needing to clean cyclone filter 22, by controlling triple valve one
28 are connected to air inlet pipe 24 with exhaust tube 27 by pipeline 1 with triple valve 2 29, and 23 inner cavity airless of cylinder passes through, can be right
22 cylinder 23 of cyclone filter, conically shaped 25 and collecting chamber 26 are cleaned.
Pipeline 2 32 is connected with by triple valve 3 31 on the supervisor of inlet end gas-distributing pipe 6, pipeline 2 32 is far from triple valve
3 31 one end is connected to the supervisor of outlet side gas-distributing pipe 7, is provided with monomer strainer on pipeline 2 32.33 ought need to multi-pass
When road filter element 3 is cleared up, regulating three-way valve 3 31 enters air-flow in monomer strainer by pipeline 2 32, guarantees analysis instrument
Lasting normal work；At this point, filter group 5 is out of service, personnel is facilitated to carry out changing film and maintenance.
Being provided on pipeline 2 32 can be to the governor 1 that gas flow rate is adjusted, can be in monomer strainer
Air velocity is adjusted, and keeps the vapour lock in each filter chamber 4 consistent, to eliminate the vapour lock difference of each filter chamber 4, guarantees and filters
The filtration channel flow velocity of device group 5 is consistent, it is ensured that when switching to monomer strainer and being filtered, analyzer detection data will not be produced
Raw larger fluctuation.
Embodiment 2:
Yueyang, hunan reed beach carry out methane flux observation experiment, gas production pump be Edwards vacuum pump (XDS-35i,
Edward, MA, USA), analyzer and vacuum pump use 220V mains-supplied, using in the quick methane analyser of LGR (FMA DLT
100, Los Gator Research Ltd.) air inlet this system is installed.
In the present embodiment, 4 quantity of filter chamber of two-stage multichannel atmosphere collection tube road filtration system is 8, controller
It is 1h that the 10 each solenoid valves 9 of control, which are in independent opening time, then successively switches to next solenoid valve 9, and recycled
Opening and closing.
By observation, in original single channel leaf filter using multistage filter membrane, the pipeline pollution of generation and its tight
Weight is needed in one week or so replacement filter device, the shutdown loss during which generated, and caused optical cavity is dirty in pump opening process
Dye problem is more serious, and pipeline cleaning and the work of instrument internal mirror surface cleaning take time and effort, and generate a large amount of loss of data.
And trial operation is carried out in the preposition this system of the air inlet of the quick methane analyser of LGR, instrument runs without interruption the time
Substantially extend.As shown in fig. 6, (there are 3 mains-supplieds to this system in period within the 33 day time of yueyang, hunan beach continuous operation
It interrupts, power-off time is respectively July 30 15:35 instantaneous, 4:30~15:37 on July 31, August 5:55~13:07 on the 14th, is led to
Electric post analysis instrument and system voluntarily start), the operating status of this system and the quick methane analyser of LGR keeps preferable.Beach floods
During water, methane concentration is maintained at 2~8ppm, and diurnal variation law is significant, and is regulated and controled obvious, the quick methane of LGR point by waterflooding
The optical cavity cleannes of analyzer are highly stable.As shown in fig. 7, there is 5.6 μ s decline in the optical cavity ring-down time during removing power-off restarting for the first time
(since a small amount of pollutant of instrument pipeline memory product polluted high reflection by disengaging inner wall in pump unlatching moment outside to 5.1 μ s
Mirror surface), hereafter more than 30 days are always maintained at 5.0 μ s or more to instrument, decline very slow.As shown in Figure 8 and Figure 9, cavity pressure by
Optical cavity temperature influences, and substantially remains between 130~135Torr.The increase of this system, when substantially prolonging instrument normal operation
Between, the human and material resources cost of the maintenance of the quick methane analyser of LGR is greatly reduced, improves the observed efficiency of atmosphere.As above
As the embodiment of the present invention.Design parameter in above-described embodiment and embodiment is merely to clear statement invention is authenticated
Journey, the scope of patent protection being not intended to limit the invention, scope of patent protection of the invention are still with its claims
Standard, it is all to change with equivalent structure made by specification and accompanying drawing content of the invention, it similarly should be included in of the invention
In protection scope.
Claims (9)
1. a kind of two-stage multichannel atmosphere collection tube road filtration system, it is characterised in that: including being set to gas production mouth (1) and instrument
Multichannel filter element (3) between air inlet (2), the multichannel filter element (3) include by multiple mistakes being separated from each other
The filter group (5) of filter chamber (4) composition；The filter group (5) is provided with inlet end gas-distributing pipe (6) and outlet side gas-distributing pipe
(7), the inlet end gas-distributing pipe (6) includes supervisor and shunting corresponding with filter chamber (4) branch with outlet side gas-distributing pipe (7)
Pipe, the inlet end gas-distributing pipe (6), outlet side gas-distributing pipe (7) pass through each filtering of shunt pipe and filter group (5) respectively
The connection of chamber (4) two sides；The supervisor of the inlet end gas-distributing pipe (6) is connected to gas production mouth (1), the outlet side gas-distributing pipe (7)
Supervisor is connected to instrument air inlet (2)；The filter group (5) is provided with solenoid valve block (8), and the solenoid valve block (8) includes
The solenoid valve (9) ventilated or died for each filter chamber of independent control (4)；The solenoid valve block (8) is connected with can be to each
The controller (10) that solenoid valve (9) is controlled, the controller (10) are opened for each solenoid valve of independent control (9) circulation
It closes, and within a control period, when one of filter chamber (4) is in aeration status, remaining filter chamber (4) is in disconnected
Gaseity；The control parameter of the controller (10) include solenoid valve (9) opening and closing sequence, solenoid valve (9) switching time between
Every.
2. a kind of two-stage multichannel atmosphere collection tube road according to claim 1 filtration system, it is characterised in that: Mei Gesuo
The air inlet or gas outlet for stating filter chamber (4) are provided with can be to the governor one (11) that gas flow rate is adjusted.
3. a kind of two-stage multichannel atmosphere collection tube road according to claim 1 or 2 filtration system, it is characterised in that: institute
State be provided on inlet end gas-distributing pipe (6) or outlet side gas-distributing pipe (7) can to the governor two (12) that gas flow rate is adjusted,
The governor two (12) is located on the supervisor of inlet end gas-distributing pipe (6) or the supervisor of outlet side gas-distributing pipe (7).
4. a kind of two-stage multichannel atmosphere collection tube road according to claim 1 filtration system, it is characterised in that: the mistake
Filter group (5) includes bottom plate (13), and the filter chamber (4) includes the groove (14) being set on bottom plate (13), the groove
(14) filter membrane (15) that is equipped in is provided with the top plate (16) that can seal groove (14) on the bottom plate (13)；The bottom
Be respectively arranged with the gas-guide tube (17) being connected to groove (14) on plate (13), top plate (16), the gas-guide tube (17) respectively with it is right
The shunt pipe connection answered.
5. a kind of two-stage multichannel atmosphere collection tube road according to claim 4 filtration system, it is characterised in that: the bottom
Groove (14) quantity on plate (13) is 3~15, is provided with multiple filter membranes (15), Mei Gesuo in each groove (14)
The aperture for stating filter membrane (15) is sequentially reduced along airflow direction；The interior filter membrane of each groove (14) (15) and groove (14) bottom it
Between be provided with porous support plate (18), be provided with lower sealing ring (19) between the support plate (18) and groove (14) bottom,
Upper sealing ring (20) are provided between the filter membrane (15) and top plate (16).
6. a kind of two-stage multichannel atmosphere collection tube road according to claim 1 filtration system, it is characterised in that: described more
It is provided with cyclonic filter unit (21) between the inlet end and gas production mouth (1) of Channel filtration unit (3), the cyclonic filter unit
It (21) include cyclone filter (22), the cyclone filter (22) includes cylinder (23), and cylinder (23) top is equipped with top
It covers, the air inlet pipe being connected to gas production mouth (1) is being installed along a tangential direction close to top cover position on cylinder (23) side wall
(24)；Cylinder (23) bottom opening, opening are connected with the conically shaped (25) being connected to cylinder (23) inner cavity, the taper
The heavy caliber edge of cylinder (25) is connect with cylinder (23) bottom opening edge seal, the small-bore one end connection of conically shaped (25)
There is the collecting chamber (26) being connected to conically shaped (25) inner cavity；Exhaust tube (27), the exhaust are provided at the top of the cylinder (23)
The bottom of cylinder (27) passes through the top cover of cylinder (23) and is located at cylinder (23) inner cavity；The exhaust tube (27) is located above top cover
One end is connected to the supervisor of inlet end gas-distributing pipe (6).
7. a kind of two-stage multichannel atmosphere collection tube road according to claim 6 filtration system, it is characterised in that: the rotation
It is connect respectively by triple valve one (28), triple valve two (29) between the air inlet pipe (24) of wind filter (22) and exhaust tube (27)
There is pipeline one (30).
8. a kind of two-stage multichannel atmosphere collection tube road according to claim 7 filtration system, it is characterised in that: it is described into
Pipeline two (32) is connected with by triple valve three (31) on the supervisor of gas end gas-distributing pipe (6), the pipeline two (32) is far from threeway
One end of valve three (31) is connected to the supervisor of outlet side gas-distributing pipe (7), is provided with monomer strainer on the pipeline two (32)
(33)。
9. a kind of two-stage multichannel atmosphere collection tube road according to claim 8 filtration system, it is characterised in that: the pipe
Being provided on road two (32) can be to the governor one (11) that gas flow rate is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358769.5A CN109342161B (en) | 2018-11-15 | Two-stage multichannel atmospheric acquisition pipeline filtration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358769.5A CN109342161B (en) | 2018-11-15 | Two-stage multichannel atmospheric acquisition pipeline filtration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109342161A true CN109342161A (en) | 2019-02-15 |
| CN109342161B CN109342161B (en) | 2024-04-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112138451A (en) * | 2020-09-28 | 2020-12-29 | 绍兴市秀臻新能源科技有限公司 | Filtering device capable of rapidly treating sewage blockage |
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