CN115060555A - Gas periodic detection and collection device for environmental monitoring - Google Patents
Gas periodic detection and collection device for environmental monitoring Download PDFInfo
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- CN115060555A CN115060555A CN202210989605.2A CN202210989605A CN115060555A CN 115060555 A CN115060555 A CN 115060555A CN 202210989605 A CN202210989605 A CN 202210989605A CN 115060555 A CN115060555 A CN 115060555A
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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
- G01N1/24—Suction devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
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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
- G01N1/2214—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption
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Abstract
The invention discloses a periodic detection and collection device for gas used for environmental monitoring, and particularly relates to the field of gas sampling. According to the invention, the drying agent powder on the surface of the drying agent area is scraped by the powder scraping plate, and when the air pump pumps air with high humidity, the drying agent powder is adsorbed and combined with moisture in the gas sample, so that the drying degree of the collected gas sample is improved, the influence of high sample humidity on subsequent detection gas is reduced, and the accuracy of a subsequent detection result is improved.
Description
Technical Field
The invention relates to the technical field of gas sampling, in particular to a periodic detection and collection device for gas for environment monitoring.
Background
Ambient humidity is one of the main factors affecting the values of gas sensors and gas detectors, most of which are sensitive to ambient humidity. The humidity is attributed to the fact that the connective tissue is gaseous water, and if the water participates in chemical changes or physical processes, the sensor can read the water; if the water plays a small role in the whole chemical change or physical process, the influence of the water is small, and when the gas sample is collected regularly, due to weather instability, the humidity of the air sample obtained by the gas collecting device in the rainy season or the rainy and snowy weather is too high, the result of subsequent detection on the air sample is easy to deviate, and the accuracy is low.
Disclosure of Invention
The invention provides a periodic detection and collection device for gas for environment monitoring, which aims to solve the problems that: the existing gas regular detection and collection device for environment monitoring cannot reduce the water content in sampled air.
In order to achieve the purpose, the invention provides the following technical scheme: a periodic detection and collection device for gas for environmental monitoring comprises a shell, wherein an air inlet mechanism is arranged on the shell, a transverse communicating pipe is fixedly arranged in the shell, one end of the communicating pipe is detachably connected with a gas sampling bag, and the other end of the communicating pipe is in sliding contact with the outer wall of the air inlet mechanism;
air inlet mechanism includes the intake pipe, the intake pipe is vertical setting and runs through the casing, and the intake pipe is both ends open structure, the outer wall of intake pipe runs through there is passageway two, the inside of passageway two is equipped with check valve two, it is intraductal to be used for restricting the one-way entering communicating pipe by the intake pipe, be equipped with the air pump in the gas passage of communicating pipe and gas sampling bag, the inner wall of communicating pipe inlays and is equipped with the drier district, the intraductal activity of communicating pipe is equipped with scrapes the powder board, the one side of scraping the powder board is equipped with the driving piece, the driving piece drive scrapes the powder board and removes along communicating pipe pipeline direction, scrape the drier powder on drier district surface down.
In a preferred embodiment, still include unmanned aerial vehicle, the casing is installed on unmanned aerial vehicle, and the both ends of intake pipe are located the upper and lower below of unmanned aerial vehicle organism respectively, and the outside movable mounting of casing has the sealing door.
In a preferred embodiment, the air inlet pipe is movably connected with the shell, a horn part is integrally formed at the top end of the air inlet pipe, an elastic part is arranged between the horn part and the shell, a first channel located right above a second channel penetrates through the outer wall of the air inlet pipe, and a first check valve is arranged inside the first channel and used for limiting air to enter the air inlet pipe from the communicating pipe in a one-way mode.
In a preferred embodiment, a baffle is mounted on the outer wall of the communication pipe, one side of the baffle is in sliding contact with the outer wall of the air inlet mechanism, and when the communication pipe is communicated with the second channel, the baffle seals the first channel.
In a preferred embodiment, an even number of the communication pipes are provided, and the even number of the communication pipes are symmetrically arranged with respect to the intake pipe.
In a preferred embodiment, the powder scraping plate comprises a frame body, an elastic pole piece is arranged on one side of the frame body close to the desiccant area, one side of the elastic pole piece far away from the frame body is in pressing contact with the surface of the desiccant area, and the elastic pole piece is bent.
In a preferred embodiment, the frame has an enlarged portion on the inner peripheral side thereof, and the enlarged portion is made of a hydrophilic material.
In a preferred embodiment, the driving member is a screw linear driving device, and the driving member drives the powder scraping plate to move towards the direction close to the air inlet pipe.
The invention has the technical effects and advantages that:
1. according to the invention, the drying agent powder on the surface of the drying agent area is scraped by the powder scraping plate, and when the air pump pumps air with high humidity, the drying agent powder is combined with moisture in the gas sample in an adsorption manner, so that the drying degree of the collected gas sample is improved, the influence of high sample humidity on subsequent detection gas is reduced, and the accuracy of a subsequent detection result is improved;
2. when the unmanned aerial vehicle ascends, the horn part of the air inlet pipe is subjected to air resistance to drive the air inlet pipe to slide downwards, so that a gas channel between the communicating pipe and the air inlet pipe is changed, and a low-pressure area is formed in the air inlet pipe, so that air in the gas sampling bag is discharged, the gas sampling bag is washed before sampling, the sucked gas sample can better reflect the gas state information of the sampling area when the unmanned aerial vehicle hovers for sampling subsequently, and the influence of the air remained in the gas sampling bag on the gas sample is reduced.
Drawings
FIG. 1 is a schematic exterior view of the overall structure of the present invention;
FIG. 2 is a schematic front view of the overall structure of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the housing in the hovering state according to the present invention;
FIG. 4 is a schematic view of the internal structure of the housing in the raised state according to the present invention;
FIG. 5 is a schematic view of the internal structure of the casing in a lowered state according to the present invention;
FIG. 6 is a schematic structural view of a powder scraping plate according to the present invention.
The reference signs are: 1. a housing; 11. a sealing door; 2. an air intake mechanism; 21. an air inlet pipe; 22. a horn section; 23. an elastic member; 24. a first channel; 25. a second channel; 26. a one-way valve; 3. a communicating pipe; 31. a desiccant zone; 32. a baffle plate; 4. an air pump; 5. a gas sampling bag; 6. a powder scraping plate; 61. a frame body; 62. an elastic pole piece; 63. a swelling part; 7. a drive member; 8. unmanned aerial vehicle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to the attached drawings 1-6 of the specification, the periodic detection and collection device for the gas for environmental monitoring comprises a shell 1, wherein a gas inlet mechanism 2 is arranged on the shell 1, a transverse communicating pipe 3 is fixedly arranged in the shell 1, one end of the communicating pipe 3 is detachably connected with a gas sampling bag 5, and the other end of the communicating pipe 3 is in sliding contact with the outer wall of the gas inlet mechanism 2;
the air inlet mechanism 2 comprises an air inlet pipe 21, the air inlet pipe 21 is vertically arranged and penetrates through the shell 1, the air inlet pipe 21 is of a structure with two open ends, a second channel 25 penetrates through the outer wall of the air inlet pipe 21, a second one-way valve is arranged inside the second channel 25 and used for limiting air to enter a communicating pipe 3 from the inside of the air inlet pipe 21 in a one-way mode, an air pump 4 is arranged in an air passage of the communicating pipe 3 and the gas sampling bag 5, a desiccant area 31 is embedded in the inner wall of the communicating pipe 3, a powder scraping plate 6 is movably arranged in the communicating pipe 3, a driving piece 7 is arranged on one side of the powder scraping plate 6, the driving piece 7 drives the powder scraping plate 6 to move along the pipeline direction of the communicating pipe 3, and desiccant powder on the surface of the desiccant area 31 is scraped;
it should be noted that the gas sampling bag 5 may be a type with a threaded port or other types of sampling bags, and the gas sampling bag 5 and the end of the communicating tube 3 are detachably connected in a fixed manner such as threaded fit or bundling; the desiccant area 31 is a desiccant block formed by pressing a desiccant in the application, the desiccant block is embedded in the inner wall of the communicating pipe 3 to form the desiccant area 31, and the desiccant is selected from a type which does not react with other gas components to be detected; the driving piece 7 is a linear driving device such as an air cylinder driving device or a screw rod driving device; air pump 4 may be disposed at any position in gas sampling bag 5 and the gas passage in communication tube 3, for example, in communication tube 3 or at the end of gas sampling bag 5; the check valve 26 comprises a first check valve and a second check valve, and the first check valve and the second check valve limit the gas to flow in opposite directions.
In this embodiment, the implementation scenario specifically includes: when the gas in the area to be sampled is periodically collected, the air pump 4 is started to generate suction force, the air at the upper end and the lower end of the air inlet pipe 21 is sucked into the communicating pipe 3 through the one-way valve II of the channel II 25, and the gas sampling bag 5 is inflated through the communicating pipe 3, so that a gas sample in the area to be sampled is collected;
when a gas sample collected regularly meets the conditions of rain and snow weather or high air humidity and the like, the air pump 4 is controlled to suck the gas in the area to be sampled, the driving piece 7 is also controlled to drive the powder scraping plate 6 to move linearly along the pipe of the communicating pipe 3, the desiccant powder on the surface of the desiccant area 31 is scraped, the desiccant powder is filled between the communicating pipe 3 and the gas channel of the gas sampling bag 5, and when the air pump 4 sucks the gas with high humidity, the desiccant powder filters the moisture in the gas, so that the dryness of the collected gas sample is improved, the influence of the high sample humidity on the subsequent detection gas is reduced, and the accuracy of the subsequent detection result is improved;
on the other hand, after the desiccant area 31 is stored for a long time, the desiccant on the surface of the desiccant area will be contacted with the moisture in the air in one step, so that the drying effect of the desiccant on the surface of the desiccant area is reduced, the desiccant powder can be scraped off to be filled in the gas channel through the movement of the powder scraping plate 6, the drying effect of the desiccant area 31 can be ensured all the time through the movement of the powder scraping plate 6, and the error influence is reduced.
Still include unmanned aerial vehicle 8, casing 1 installs on unmanned aerial vehicle 8, and the both ends of intake pipe 21 are located the upper and lower side of unmanned aerial vehicle 8 organism respectively, and casing 1's outside movable mounting has sealing door 11.
Baffle 32 is installed to the outer wall of communicating pipe 3, and one side of baffle 32 and the outer wall sliding contact of mechanism 2 that admits air, when communicating pipe 3 and second 25 intercommunications of passageway, baffle 32 seals passageway one 24, is favorable to avoiding the air in communicating pipe 3 to enter into casing 1, avoids reducing the velocity of flow that gaseous sample was inhaled to gas sampling bag 5.
It is further illustrated that in the process of regularly collecting the environmental gas samples for monitoring the environmental change, in order to detect the difference of the gas environments with different heights, the device further comprises an unmanned aerial vehicle 8, and the unmanned aerial vehicle 8 flies to different heights to realize the function of collecting the gas samples with different heights.
The implementation scenario is specifically as follows: in the ascending process before the unmanned aerial vehicle 8 reaches the area to be sampled, the horn part 22 of the air inlet pipe 21 is subjected to air resistance, the horn part 22 is pressed, the air inlet pipe 21 is driven to slide downwards in the shell 1, the original channel two 25 is overlapped with the communicating pipe 3, the channel one 24 is overlapped with the communicating pipe 3, the one-way valve one-way motion of air is limited at the moment, air can only enter the air inlet pipe 21 from the communicating pipe 3, and the air inlet pipe 21 is of a structure with two open ends, so that when the unmanned aerial vehicle 8 drives the air inlet pipe to move upwards, the air flow rate in the air inlet pipe 21 is high, a low-pressure area is formed in the air inlet pipe 21, the air in the gas sampling bag 5 is discharged into the air inlet pipe 21 through the communicating pipe 3 and the channel one 24, the gas in the bag is discharged, the gas in the gas sampling bag 5 is washed, the subsequent unmanned aerial vehicle 8 is favorable for hovering sampling, and the sucked gas sample can more embody the gas state information of the sampling area, the influence of the air remained in the gas sampling bag 5 on the gas sample is reduced, and the accuracy of the subsequent detection result is further improved.
Even number of communicating pipes 3 are provided, and even number of communicating pipes 3 are symmetrically arranged with respect to intake pipe 21, and sampling efficiency is improved by increasing sampling number.
The powder scraping plate 6 comprises a frame body 61, an elastic pole piece 62 is mounted on one side of the frame body 61 close to the desiccant area 31, one side of the elastic pole piece 62 far away from the frame body 61 is in pressing contact with the surface of the desiccant area 31, the elastic pole piece 62 is bent, and the elastic pole piece 62 is made of elastic metal.
An expansion part 63 is arranged on the inner periphery side of the frame body 61, and the expansion part 63 is made of hydrophilic material;
the expansion part 63 is formed of a multi-layer cloth or a hydrophilic material such as cotton and is fixed to the inside of the frame 61, and increases the contact area between the moisture in the gas and the frame 61, thereby absorbing the moisture to improve the dryness of the collected gas sample.
The driving piece 7 is a screw rod linear driving device, and the driving piece 7 drives the powder scraping plate 6 to move towards the direction close to the air inlet pipe 21.
In this embodiment, when the gas in the region to be sampled is periodically collected, the implementation scenario specifically includes: the unmanned aerial vehicle 8 is controlled to drive the shell 1 to fly to an area to be sampled;
when the collecting device is in the ascending state, the horn part 22 of the air inlet pipe 21 is subjected to the resistance of the air, the horn part 22 is pressed, the air inlet pipe 21 is driven to slide downwards in the shell 1, the original state that the second channel 25 is overlapped with the communicating pipe 3 is changed to the state that the first channel 24 is overlapped with the communicating pipe 3 (at the moment, the gas can only enter the air inlet pipe 21 from the communicating pipe 3), moreover, because the air inlet pipe 21 is of a structure with openings at two ends, when the unmanned aerial vehicle 8 drives the unmanned aerial vehicle to move upwards, the air flow rate in the air inlet pipe 21 is high, a low-pressure area is formed in the air inlet pipe 21, so that the air in the gas sampling bag 5 is discharged into the air inlet pipe 21 through the communicating pipe 3 and the first channel 24, the gas in the bag is discharged, the gas sampling bag 5 is purged, and in the process, due to the limiting effect of the one-way valve one, in rainy and snowy weather, air cannot enter the communicating pipe 3 and the gas sampling bag 5 through the one-way valve I;
in the hovering state of the collecting device, the unmanned aerial vehicle 8 rises to the area to be sampled and hovers, the air pump 4 is started to generate suction, air at the upper end and the lower end of the air inlet pipe 21 is sucked into the communicating pipe 3 through the one-way valve II of the channel II 25, and then the gas sampling bag 5 is inflated through the communicating pipe 3, so that a gas sample of the area to be sampled is collected; in rainy and snowy weather, the air contains a large amount of moisture and has high humidity, and the horn part 22 has the function of collecting flow, so that the moisture of the air in the air inlet pipe 21 can be increased; the frame body 61 is driven to move towards the direction close to the air inlet pipe 21 by controlling the driving part 7 again, the elastic pole piece 62 moves to scrape the desiccant powder on the surface of the desiccant area 31, the desiccant powder is filled between the air channels of the communicating pipe 3 and the air sampling bag 5, when the air pump 4 pumps air with high humidity, the desiccant powder is combined with moisture in the air in an adsorption manner, the drying degree of the collected air sample is improved, meanwhile, the frame body 61 is pushed by the driving part 7 to move to the position close to the second 25 of the channel, the suction force of the air pump 4 can be blocked to suck rainwater or snowflakes into the communicating pipe 3 and the second 25 of the channel, the rainwater or the snowflakes entering the communicating pipe 3 further penetrate into the air channels and are close to the air sampling bag 5, and the air sucked by the air pump 4 is filtered through the hydrophilic material arranged on the expansion part 63, so that the drying degree of the collected air sample is improved, the influence of high sample humidity on subsequent detection gas is reduced, and the accuracy of a subsequent detection result is improved;
in the collector decline state, loudspeaker portion 22 receives the ascending resistance of air, and pulling intake pipe 21 moves up in casing 1, makes two 25 of passageways and 3 dislocation communicating pipe, guarantees to be airtight cavity all the time at the decline in-process with the gas passage of gas sampling bag 5 communicating pipe 3, stops gaseous sample and the gaseous exchange in outside different regions, reduces the gaseous sample of collection and receives external environment's influence.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. The utility model provides a collection device is regularly detected with gas in environmental monitoring, includes casing (1), its characterized in that: the gas sampling device is characterized in that a gas inlet mechanism (2) is arranged on the shell (1), a transverse communicating pipe (3) is fixedly arranged in the shell (1), one end of the communicating pipe (3) is detachably connected with a gas sampling bag (5), and the other end of the communicating pipe (3) is in sliding contact with the outer wall of the gas inlet mechanism (2);
the air inlet mechanism (2) comprises an air inlet pipe (21), the air inlet pipe (21) is vertically arranged and penetrates through the shell (1), the air inlet pipe (21) is of a structure with two open ends, a second channel (25) penetrates through the outer wall of the air inlet pipe (21), a second one-way valve is arranged inside the second channel (25), used for limiting air from entering the communicating pipe (3) from the air inlet pipe (21) in a single direction, an air pump (4) is arranged in an air passage of the communicating pipe (3) and the air sampling bag (5), a drying agent area (31) is embedded in the inner wall of the communicating pipe (3), a powder scraping plate (6) is movably arranged in the communicating pipe (3), one side of scraping powder board (6) is equipped with driving piece (7), driving piece (7) drive is scraped powder board (6) and is removed along communicating pipe (3) pipeline direction, scrapes the drier powder on drier district (31) surface down.
2. The periodic environmental monitoring gas detection and collection device according to claim 1, wherein: still include unmanned aerial vehicle (8), install on unmanned aerial vehicle (8) casing (1), just the both ends of intake pipe (21) are located the upper and lower side of unmanned aerial vehicle (8) organism respectively, the outside movable mounting of casing (1) has sealing door (11).
3. The periodic environmental monitoring gas detection and collection device according to claim 2, wherein: intake pipe (21) and casing (1) swing joint, the top integrated into one piece of intake pipe (21) has horn portion (22), be equipped with elastic component (23) between horn portion (22) and casing (1), the outer wall of intake pipe (21) runs through and has passageway (24) that are located directly over passageway two (25), just the inside of passageway (24) is equipped with check valve one for restrict the air one-way by it is intraductal to get into intake pipe (21) communicating pipe (3).
4. The periodic environmental monitoring gas detection and collection device according to claim 3, wherein: baffle (32) are installed to the outer wall of communicating pipe (3), one side of baffle (32) and the outer wall sliding contact of mechanism (2) admits air, work as when communicating pipe (3) and passageway two (25) communicate, baffle (32) seal passageway one (24).
5. The periodic environmental monitoring gas detection and collection device according to claim 4, wherein: the even number of the communicating pipes (3) is arranged, and the even number of the communicating pipes (3) are symmetrically arranged relative to the air inlet pipe (21).
6. The periodic environmental monitoring gas detection and collection device according to claim 1 or 5, wherein: scrape whitewashed board (6) and include framework (61), one side that framework (61) are close to desiccant district (31) is installed elasticity pole piece (62), one side that framework (61) were kept away from in elasticity pole piece (62) is distinguished (31) surface extrusion contact with desiccant, just elasticity pole piece (62) are the bending form.
7. The periodic environmental monitoring gas detection and collection device according to claim 6, wherein: an expanded part (63) is arranged on the inner peripheral side of the frame body (61), and the expanded part (63) is made of hydrophilic materials.
8. The gas periodic detection and collection device for environmental monitoring according to claim 7, wherein: the driving piece (7) is a screw rod linear driving device, and the driving piece (7) drives the powder scraping plate (6) to move towards the direction close to the air inlet pipe (21).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210989605.2A CN115060555B (en) | 2022-08-18 | 2022-08-18 | Gas periodic detection and collection device for environmental monitoring |
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| CN202210989605.2A CN115060555B (en) | 2022-08-18 | 2022-08-18 | Gas periodic detection and collection device for environmental monitoring |
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| CN115060555B (en) | 2022-11-08 |
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Effective date of registration: 20230427 Address after: 237011 Factory Building 26 #, Liandong U Valley, Liu'an Intelligent Manufacturing Industrial Park, Shouchun Road and Wujiao Road Intersection, Economic and Technological Development Zone, Lu'an City, Anhui Province Patentee after: Anhui hengxintong Intelligent Technology Co.,Ltd. Address before: Room 408-1072, Nangang Science and Technology Park, the intersection of Dabieshan Road and Tianlong Road, High-tech Zone, Hefei City, Anhui Province, 230088 Patentee before: Anhui fuel Smart Technology Co.,Ltd. |