CN112051114A - Handheld smoke particulate matter sampling device and method - Google Patents
Handheld smoke particulate matter sampling device and method Download PDFInfo
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- CN112051114A CN112051114A CN202010881542.XA CN202010881542A CN112051114A CN 112051114 A CN112051114 A CN 112051114A CN 202010881542 A CN202010881542 A CN 202010881542A CN 112051114 A CN112051114 A CN 112051114A
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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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- 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
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Abstract
The invention discloses a handheld smoke particulate matter sampling device and a method, wherein the sampling device comprises the following steps: the detection assembly is arranged in the cavity; the detection assembly comprises a protective plate and a smoke guide tube, the protective plate surrounds a smoke channel, the center of the smoke channel is connected with the smoke guide tube, the smoke channel is divided into N sections and marked as a first channel and a second channel … … Nth channel, the N sections of smoke channels form a vortex structure, adsorption holes are formed in the inner walls of the N sections of smoke channels, a plurality of first adsorption holes are formed in the inner wall of the first channel, a plurality of second adsorption holes … … are formed in the inner wall of the second channel, a plurality of Nth adsorption holes are formed in the inner wall of the Nth channel, and the sizes of the first adsorption holes, the second adsorption holes and the third adsorption holes are sequentially increased; the protective plate is of a hollow structure, a base layer is arranged in the protective plate, an adsorption layer is arranged on one side of the base layer, and the adsorption layer can adsorb particulate matters in the flue gas; the smoke inlet is formed in one end face of the cavity and connected with a port of the first channel, smoke flows through the first channel, the second channel … … the Nth channel and the smoke guide pipe in sequence from the smoke inlet, the smoke guide pipe is connected with a fan, and the fan can lead out the smoke in the smoke channel.
Description
Technical Field
The invention relates to the field of smoke detection, in particular to a handheld smoke particulate matter sampling device and method.
Background
Flue gas is a mixture of gas and smoke dust and is the main cause of atmospheric pollution in residential areas. The components of the flue gas are complex, the gas comprises water vapor, SO2, N2, O2, CO2 hydrocarbon, nitrogen oxide and the like, and the smoke comprises ash, coal particles, oil drops, pyrolysis products and the like of the fuel. Therefore, the pollution of the flue gas to the environment is the composite pollution of various poisons. The hazard of smoke to human bodies is related to the size of particles, most of the smoke is floating dust with the diameter of less than 10 microns, particularly the highest hazard is the floating dust with the diameter of 1-2.5 microns, and the hazard to human bodies depends on the composition, concentration, duration and action parts of pollutants on one hand and the sensitivity of human bodies on the other hand. High smoke concentration can cause acute poisoning, manifested as cough, pharyngalgia, chest distress, asthma, headache, eye stabbing pain, etc., and severe cases can die. The most common is chronic poisoning, which causes irritation to respiratory mucosa to cause chronic bronchitis and the like. Asthma in the four-day city of japan in 1957 is a typical example of chronic toxicity of smoke. In addition, the smoke gas also contains strong carcinogenic substances such as benzopyrene.
In the prior art, the gas to be detected often needs to be introduced to a place where detection equipment is convenient to arrange for detection, generally speaking, the gas to be detected is firstly guided into a detection gas pool through a pipeline, the index that needs to detect is mainly gaseous composition and content, the spectrum is conventional detection means, this kind of mode detects complicacy, can't carry out simple sample detection to small-size places such as kitchen flue gas or smoking room through the hand-held type structure is nimble, traditional flue gas detection device is not through setting up multistage determine module, carry out the stack test with the adsorbed layer that corresponds on one-level determine module and the second grade determine module, particulate matter content and concentration in the unable accurate analysis flue gas, in addition, can't pass through second grade or multistage determine module, carry out index parameters such as the detection precision of contrastive analysis one-level determine module and the adsorption factor of one-level determine module, the practicality is not strong.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides a handheld smoke particulate sampling device and a method.
In order to achieve the purpose, the invention adopts the technical scheme that: a hand-held particulate smoke sampling device comprising: the detection assembly is arranged in the cavity;
the detection assembly comprises a protective plate and a smoke guide tube, the protective plate surrounds a smoke channel, the center of the smoke channel is connected with the smoke guide tube, the smoke channel is divided into N sections and marked as a first channel and a second channel … … Nth channel, the N sections of smoke channels form a vortex structure, adsorption holes are formed in the inner walls of the N sections of smoke channels, a plurality of first adsorption holes are formed in the inner wall of the first channel, a plurality of second adsorption holes … … are formed in the inner wall of the second channel, a plurality of Nth adsorption holes are formed in the inner wall of the Nth channel, and the sizes of the first adsorption holes, the second adsorption holes and the third adsorption holes are sequentially increased;
the protective plate is of a hollow structure, a base layer is arranged in the protective plate, an adsorption layer is arranged on one side of the base layer, and the adsorption layer can adsorb particulate matters in the flue gas;
the smoke inlet is formed in one end face of the cavity and connected with a port of the first channel, smoke flows through the first channel, the second channel … … the Nth channel and the smoke guide pipe in sequence from the smoke inlet, the smoke guide pipe is connected with a fan, and the fan can lead out the smoke in the smoke channel.
In a preferred embodiment of the present invention, a telescopic rod is connected to one end of the smoke guiding pipe, the fan portion is disposed inside the telescopic rod, and a mesh is disposed at an end of the telescopic rod.
In a preferred embodiment of the invention, one end of the connecting rod is provided with a handle, and the end part of the handle is provided with an anti-slip layer.
In a preferred embodiment of the present invention, the smoke inlet is a trumpet-shaped structure, the smoke inlet is provided with an adjusting baffle, and the adjusting baffle is provided with an adjusting piece.
In a preferred embodiment of the present invention, the sizes of the adsorption holes on the inner wall of the same section of flue gas channel can be the same or different.
In a preferred embodiment of the present invention, when there are a plurality of detection assemblies, the plurality of detection assemblies are respectively marked as a primary detection assembly and a secondary detection assembly … … N multi-stage detection assembly, the smoke guide port of the primary detection assembly is connected to the first channel port of the secondary detection assembly, and so on.
In a preferred embodiment of the invention, the aperture range of the adsorption holes on the inner wall of the N sections of flue gas channels is 1-10 mm.
In order to achieve the above purpose, the second technical solution adopted by the present invention is: a sampling method of smoke particles comprises the following steps:
the handle is held, and the length of the connecting rod is adjusted to enable the smoke inlet to be close to the area with high smoke concentration;
adjusting the direction of the smoke inlet to enable the smoke flowing direction to face the smoke inlet, starting the fan, and enabling the smoke to sequentially flow through the first channel and the Nth channel of the second channel … … at a constant speed;
the first adsorption hole and the second adsorption hole … … Nth adsorption hole sequentially suck flue gas in the flue gas flowing process;
the adsorption layer in the guard plate is used for adsorbing the particles of the smoke sucked from the first adsorption hole and the Nth adsorption hole of the second adsorption hole … …;
and after adsorption is finished, taking out the adsorption layer for smoke detection.
In a preferred embodiment of the invention, the inner wall of the flue gas channel is embedded with a condensing pipe, and the temperature of the flue gas is controlled to be 20-50 ℃ through the condensing pipe.
In a preferred embodiment of the invention, the fan can be an induced draft fan, and the flow speed of the flue gas is controlled to be 5-30cm/s by the induced draft fan.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) can carry out smoke sampling test to small-size places such as kitchen or smoking room through hand-held type detection device, it is convenient to detect, only needs to hold the handle will advance the mouth of cigarette towards the great region of flue gas concentration, starts the fan and leads cigarette, easy operation.
(2) Basic unit and adsorbed layer set up in the inside of backplate, adsorb the back at the flue gas, can take off the adsorbed layer in a flexible way, conveniently carry out the segmentation and detect, and the adsorbed layer that is located on different section flue gas passageways can form contrast test.
(3) The backplate surrounds into the vortex structure, makes the flue gas flow along the flue gas passageway of vortex structure, can prolong flue gas flow path, and the flue gas passageway both sides are sealed through the sealing layer, prevent to get into the flue gas in the cavity and scatter, can realize the water conservancy diversion to the flue gas.
(4) There is a plurality of adsorption hole on the route that the flue gas passageway flows along the flue gas, the adsorption hole size on first passageway to the Nth passageway increases progressively in proper order, the flue gas is at first through first passageway, adsorb small particulate matter through first adsorption hole, when flue gas flows to the Nth passageway, adsorb great particulate matter in the flue gas, set up the adsorption hole through the gradient, can realize that flue gas particulate matter adsorbs according to size gradient, make the adsorbed layer of corresponding section form the gradient contrast, can realize contrastive analysis when carrying out the analysis.
(5) Through setting up multistage determine module, one-level determine module's lead tobacco pipe is connected to second grade determine module's smoke inlet, one-level determine module adsorbs the back through a lot of absorption, different flue gas particulate matter concentrations and adsorbed layer's adsorption capacity are different, make the flue gas particulate matter unable absorb completely, adsorb once more through second grade determine module this moment, still adsorb through the absorbent mode of multistage flue gas passageway, carry out the stack test with the adsorbed layer that corresponds on one-level determine module and the second grade determine module, particulate matter content and concentration in the analysis flue gas that can be more accurate, furthermore, through setting up second grade or multistage determine module, index parameters such as the detection precision that can also contrastive analysis one-level determine module and one-level determine module's adsorption efficiency.
Drawings
The invention is further explained below with reference to the figures and examples;
FIG. 1 is a schematic partial perspective view of a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the detecting device according to the preferred embodiment of the present invention;
FIG. 3 is a schematic back structure of the detecting device according to the preferred embodiment of the present invention;
FIG. 4 is a schematic diagram of the internal structure of the chamber of the preferred embodiment of the present invention;
fig. 5 is a schematic structural diagram of a detection assembly according to a preferred embodiment of the present invention.
In the figure: 1. the device comprises a cover plate, 2, an adjusting piece, 3, a smoke inlet, 4, a threaded hole, 5, a handle, 6, a telescopic rod, 7, a cavity, 8, a thermometer, 9, an adjusting baffle, 10, an electrostatic eliminator, 11, meshes, 12, a guard plate, 13, a smoke guide pipe, 14, a fan, 15 and an adsorption hole.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.
As shown in fig. 1-5, a handheld smoke particulate sampling device comprises: the detection device comprises a cavity 7 and a detection assembly arranged inside the cavity 7;
the detection assembly comprises a protection plate 12 and a smoke guide pipe 13, the protection plate 12 surrounds a smoke channel, the smoke channel is connected with the smoke guide pipe 13 at the center, the smoke channel is divided into N sections which are marked as a first channel and a second channel … … Nth channel, the N sections of smoke channels form a vortex structure, adsorption holes 15 are formed in the inner walls of the N sections of smoke channels, a plurality of first adsorption holes are formed in the inner wall of the first channel, a plurality of second adsorption holes … … are formed in the inner wall of the second channel, and a plurality of Nth adsorption holes are formed in the inner wall of the Nth channel, and the sizes of the first adsorption holes, the second adsorption holes and the third adsorption holes are sequentially increased;
the guard plate 12 is of a hollow structure, a base layer is arranged inside the guard plate 12, and an adsorption layer is arranged on one side of the base layer and can adsorb particulate matters in smoke;
one end face of the cavity 7 is provided with a smoke inlet 3, the smoke inlet 3 is connected with a port of the first channel, smoke flows through the first channel and the second channel … … from the Nth channel to a smoke guide pipe 13 in sequence through the smoke inlet 3, the smoke guide pipe 13 is connected with a fan 14, and the fan 14 can lead out the smoke in the smoke channel.
It should be noted that, a cover plate 1 is arranged on one side of a cavity 7, a temperature controller 8 is arranged on the cover plate 1, the temperature controller 8 is used for detecting the smoke temperature inside the cavity 7, an electrostatic eliminator 10 is arranged on the back of the cavity 7, smoke particles rub against each other, and the smoke particles rub against the inner wall of the cavity 7 to form static electricity, the static electricity on the outer wall of the cavity 7 is eliminated through the electrostatic eliminator 10, so that the safety is improved, threaded holes 4 are formed in four corners of the cover plate 1, the cover plate 1 is sealed on one side of the cavity 7 through screws, a base layer and an adsorption layer are arranged inside a protection plate 12, after smoke adsorption is completed, the adsorption layer can be flexibly taken down, so that subsection detection is convenient, and the adsorption layers on; backplate 12 surrounds into the vortex structure, make the flue gas flow along the flue gas passageway of vortex structure, can prolong flue gas flow path, flue gas passageway both sides are sealed through the sealing layer, prevent to get into the flue gas in the cavity 7 and scatter, can realize the water conservancy diversion to the flue gas, cavity 7 both ends lateral wall and sealing layer laminating, there is the space between cavity 7 and the inlet flue 3, contain certain amount of flue gas in the space, the space has certain buffering time before can making the flue gas get into the determine module, the condenser pipe is inlayed on the cavity 7 inner wall that is provided with inlet flue 3, can cool down the flue gas that inlet 3 got into, prevent that high temperature flue gas from damaging determine module and adsorbed layer.
According to the embodiment of the invention, one end of the smoke guide pipe 13 is connected with a telescopic rod 6, the fan 14 is partially arranged inside the telescopic rod 6, and one end part of the telescopic rod 6 is provided with a mesh 11.
It should be noted that can carry out flue gas sampling test to small-size places such as kitchen or smoking room through hand-held type detection device, it is convenient to detect, only needs to hold handle 5 will advance the 3 great regions of mouth of cigarette towards flue gas concentration, starts fan 14 and leads the cigarette, easy operation.
According to the embodiment of the invention, one end of the connecting rod is provided with a handle 5, and the end part of the handle 5 is provided with an anti-slip layer.
It should be noted that the anti-slip layer is provided with a thread groove, which increases the friction between the palm and the handle 5, and prevents the damage of the sampling device caused by the slipping of the hand.
According to the embodiment of the invention, the smoke inlet 3 is of a horn-shaped structure, the smoke inlet 3 is provided with an adjusting baffle plate 9, and the adjusting baffle plate 9 is provided with an adjusting piece 2.
It should be noted that, regulating part 2 can adjust the aperture of adjusting baffle 9, and then control the flue gas admission capacity, makes the flue gas temperature after the condenser pipe condensation all control in reasonable scope.
According to the embodiment of the invention, the sizes of the adsorption holes 15 on the inner wall of the same section of flue gas channel can be the same or different.
It should be noted that, in the invention, the sizes of the adsorption holes 15 on the inner wall of the same section of flue gas channel are the same, and the adsorption layer in the same section of flue gas channel can adsorb flue gas particulate matters with similar sizes.
According to the embodiment of the invention, when the number of the detection assemblies is multiple, the detection assemblies are respectively marked as a primary detection assembly and a secondary detection assembly … … N multi-stage detection assembly, the smoke guide port of the primary detection assembly is connected with the first channel port of the secondary detection assembly, and so on.
It should be noted that, through setting up multistage determine module, one-level determine module's smoke guide pipe 13 is connected to second grade determine module's inlet 3, one-level determine module is through adsorbing the back many times, different flue gas particulate matter concentrations and adsorbed layer's adsorption capacity are different, make the flue gas particulate matter can't absorb completely, adsorb once more through second grade determine module this moment, still adsorb through the absorbent mode of multistage flue gas passageway, carry out the stack test with the adsorbed layer that corresponds on one-level determine module and the second grade determine module, particulate matter content and concentration in the analysis flue gas that can be more accurate, furthermore, through setting up second grade or multistage determine module, index parameters such as the detection precision that can also contrastive analysis one-level determine module and one-level determine module's adsorption efficiency.
According to the embodiment of the invention, the aperture range of the adsorption holes 15 on the inner wall of the N sections of flue gas channels is 1-10 mm.
It should be noted that the invention is provided with three sections of flue gas channels, the aperture in the first channel is 1-3mm, and the preferred aperture is 2 mm; the aperture of the adsorption hole in the second channel is 3-6mm, and the preferred aperture is 5 mm; the aperture of the adsorption hole 15 in the third channel is 6-10mm, the preferred aperture is 8mm, the flue gas channel is provided with a plurality of adsorption holes 15 along the flowing path of the flue gas, the sizes of the adsorption holes 15 from the first channel to the Nth channel are sequentially increased, the flue gas firstly passes through the first channel, the small particulate matters are adsorbed through the first adsorption holes, the flue gas flows to the Nth channel, the large particulate matters in the flue gas are adsorbed, the adsorption holes 15 are arranged through the gradient, the adsorption of the flue gas particulate matters according to the size gradient can be realized, the gradient contrast of the adsorption layer of the corresponding section is realized, and the contrastive analysis can be realized when the analysis is carried out.
In order to achieve the above purpose, the second technical solution adopted by the present invention is: a sampling method of smoke particles comprises the following steps:
the handle 5 is held, and the length of the connecting rod is adjusted to enable the smoke inlet 3 to be close to an area with high smoke concentration;
adjusting the direction of the smoke inlet 3 to enable the smoke flowing direction to face the smoke inlet 3, starting the fan 14, and enabling the smoke to sequentially flow through the first channel and the Nth channel … … at a constant speed;
the first adsorption hole and the second adsorption hole … … Nth adsorption hole sequentially suck flue gas in the flue gas flowing process;
the adsorption layer in the guard plate 12 is used for adsorbing the particulate matters of the flue gas sucked by the first adsorption hole and the Nth adsorption hole … …;
and after adsorption is finished, taking out the adsorption layer for smoke detection.
It should be noted that, the base layer and the adsorption layer are arranged inside the guard plate 12, after the flue gas adsorption is completed, the adsorption layer can be flexibly taken down, the segmented detection is convenient, and the adsorption layers on different sections of flue gas channels can form a contrast test; backplate 12 surrounds into the vortex structure, make the flue gas flow along the flue gas passageway of vortex structure, can prolong flue gas flow path, flue gas passageway both sides are sealed through the sealing layer, prevent to get into the flue gas in the cavity 7 and scatter, can realize the water conservancy diversion to the flue gas, cavity 7 both ends lateral wall and sealing layer laminating, there is the space between cavity 7 and the inlet flue 3, contain certain amount of flue gas in the space, the space has certain buffering time before can making the flue gas get into the determine module, the condenser pipe is inlayed on the cavity 7 inner wall that is provided with inlet flue 3, can cool down the flue gas that inlet 3 got into, prevent that high temperature flue gas from damaging determine module and adsorbed layer.
According to the embodiment of the invention, one end of the smoke guide pipe 13 is connected with a telescopic rod 6, the fan 14 is partially arranged inside the telescopic rod 6, and one end part of the telescopic rod 6 is provided with a mesh 11.
It should be noted that can carry out flue gas sampling test to small-size places such as kitchen or smoking room through hand-held type detection device, it is convenient to detect, only needs to hold handle 5 will advance the 3 great regions of mouth of cigarette towards flue gas concentration, starts fan 14 and leads the cigarette, easy operation.
According to the embodiment of the invention, one end of the connecting rod is provided with a handle 5, and the end part of the handle 5 is provided with an anti-slip layer.
It should be noted that the anti-slip layer is provided with a thread groove, which increases the friction between the palm and the handle 5, and prevents the damage of the sampling device caused by the slipping of the hand.
According to the embodiment of the invention, the smoke inlet 3 is of a horn-shaped structure, the smoke inlet 3 is provided with an adjusting baffle plate 9, and the adjusting baffle plate 9 is provided with an adjusting piece 2.
It should be noted that, regulating part 2 can adjust the aperture of adjusting baffle 9, and then control the flue gas admission capacity, makes the flue gas temperature after the condenser pipe condensation all control in reasonable scope.
According to the embodiment of the invention, when the number of the detection assemblies is multiple, the detection assemblies are respectively marked as a primary detection assembly and a secondary detection assembly … … N multi-stage detection assembly, the smoke guide port of the primary detection assembly is connected with the first channel port of the secondary detection assembly, and so on.
It should be noted that, through setting up multistage determine module, one-level determine module's smoke guide pipe 13 is connected to second grade determine module's inlet 3, one-level determine module is through adsorbing the back many times, different flue gas particulate matter concentrations and adsorbed layer's adsorption capacity are different, make the flue gas particulate matter can't absorb completely, adsorb once more through second grade determine module this moment, still adsorb through the absorbent mode of multistage flue gas passageway, carry out the stack test with the adsorbed layer that corresponds on one-level determine module and the second grade determine module, particulate matter content and concentration in the analysis flue gas that can be more accurate, furthermore, through setting up second grade or multistage determine module, index parameters such as the detection precision that can also contrastive analysis one-level determine module and one-level determine module's adsorption efficiency.
According to the embodiment of the invention, the aperture range of the adsorption holes 15 on the inner wall of the N sections of flue gas channels is 1-10 mm.
It should be noted that the invention is provided with three sections of flue gas channels, the aperture in the first channel is 1-3mm, and the preferred aperture is 2 mm; the aperture of the adsorption hole in the second channel is 3-6mm, and the preferred aperture is 5 mm; the aperture of the adsorption hole in the third channel is 6-10mm, the preferred aperture is 8mm, the flue gas channel is provided with a plurality of adsorption holes along the path of flue gas flowing, the sizes of the adsorption holes on the first channel and the Nth channel are sequentially increased, the flue gas firstly passes through the first channel, the small particulate matters are adsorbed through the first adsorption holes, when the flue gas flows to the Nth channel, the flue gas adsorbs the large particulate matters in the flue gas, the adsorption holes are arranged through the gradient, the flue gas particulate matters can be adsorbed according to the size gradient, the adsorption layers of the corresponding sections form gradient contrast, and contrastive analysis can be realized when the flue gas is analyzed.
According to the embodiment of the invention, the inner wall of the flue gas channel is embedded with the condensing pipe, and the temperature of the flue gas is controlled to be 20-50 ℃ through the condensing pipe.
It should be noted that, a condenser pipe is arranged on the inner wall of the cavity 7 close to the smoke inlet 3, and the condenser pipe is inlaid on the inner wall of the smoke channel, so that the smoke can enter the smoke inlet 3 just before entering the smoke inlet 3, and primary condensation is performed, so that the smoke temperature is maintained at 50-70 ℃, and then the smoke can enter the smoke channel, and in the process of flowing through the smoke channel, secondary cooling is performed through the condenser pipe on the smoke channel, so that the smoke is gradually cooled to 20-50 ℃, and the preferred temperature is 40 ℃, and the temperature does not cause the smoke temperature to be lower, thereby causing the falling and settlement of particulate matters in the smoke, and the temperature is higher, scalding the inner wall of the smoke channel, and the safety is.
According to the embodiment of the invention, the fan 14 can be an induced draft fan 14, and the flow speed of the flue gas is controlled to be 5-30cm/s through the induced draft fan 14.
It should be noted that, draught fan 14 is through frequency conversion pre-start, and in the frequency conversion start-up process, 14 power of draught fan increase gradually, improve draught fan 14 frequency to predetermined frequency until, improve draught fan 14 life, also can make the determine module have a preheating process in the pre-start-up process, prevent that the determine module suddenly meets high temperature flue gas and causes the deformation.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A hand-held particulate smoke sampling device comprising: the detection assembly is arranged in the cavity; it is characterized in that the preparation method is characterized in that,
the detection assembly comprises a protective plate and a smoke guide tube, the protective plate surrounds a smoke channel, the center of the smoke channel is connected with the smoke guide tube, the smoke channel is divided into N sections and marked as a first channel and a second channel … … Nth channel, the N sections of smoke channels form a vortex structure, adsorption holes are formed in the inner walls of the N sections of smoke channels, a plurality of first adsorption holes are formed in the inner wall of the first channel, a plurality of second adsorption holes … … are formed in the inner wall of the second channel, a plurality of Nth adsorption holes are formed in the inner wall of the Nth channel, and the sizes of the first adsorption holes, the second adsorption holes and the third adsorption holes are sequentially increased;
the protective plate is of a hollow structure, a base layer is arranged in the protective plate, an adsorption layer is arranged on one side of the base layer, and the adsorption layer can adsorb particulate matters in the flue gas;
the smoke inlet is formed in one end face of the cavity and connected with a port of the first channel, smoke flows through the first channel, the second channel … … the Nth channel and the smoke guide pipe in sequence from the smoke inlet, the smoke guide pipe is connected with a fan, and the fan can lead out the smoke in the smoke channel.
2. The hand-held sampling device for smoke particles as claimed in claim 1, wherein: one end of the smoke guide pipe is connected with a telescopic rod, the fan part is arranged inside the telescopic rod, and the end part of one end of the telescopic rod is provided with meshes.
3. The hand-held sampling device for smoke particles as claimed in claim 1, wherein: one end of the connecting rod is provided with a handle, and the end part of the handle is provided with an anti-slip layer.
4. The hand-held sampling device for smoke particles as claimed in claim 1, wherein: the cigarette inlet is of a horn-shaped structure, the cigarette inlet is provided with an adjusting baffle, and an adjusting piece is arranged on the adjusting baffle.
5. The hand-held sampling device for smoke particles as claimed in claim 1, wherein: the size of the adsorption holes on the inner wall of the flue gas channel in the same section can be the same or different.
6. The hand-held sampling device for smoke particles as claimed in claim 1, wherein: when the detection assembly is a plurality of, a plurality of detection assemblies are marked as first-level detection assembly, second-level detection assembly … … N multistage detection assembly respectively, and the smoke guiding port of the first-level detection assembly is connected with the first channel port of the second-level detection assembly, and so on.
7. The hand-held sampling device for smoke particles as claimed in claim 1, wherein: the aperture range of the adsorption holes on the inner wall of the N sections of flue gas channels is 1-10 mm.
8. A method for sampling flue gas particulates according to any one of claims 1 to 7, comprising the steps of:
the handle is held, and the length of the connecting rod is adjusted to enable the smoke inlet to be close to the area with high smoke concentration;
adjusting the direction of the smoke inlet to enable the smoke flowing direction to face the smoke inlet, starting the fan, and enabling the smoke to sequentially flow through the first channel and the Nth channel of the second channel … … at a constant speed;
the first adsorption hole and the second adsorption hole … … Nth adsorption hole sequentially suck flue gas in the flue gas flowing process;
the adsorption layer in the guard plate is used for adsorbing the particles of the smoke sucked from the first adsorption hole and the Nth adsorption hole of the second adsorption hole … …;
and after adsorption is finished, taking out the adsorption layer for smoke detection.
9. The hand-held sampling device and method of smoke particles of claim 8, wherein: the inner wall of the flue gas channel is embedded with a condensing pipe, and the temperature of the flue gas is controlled to be 20-50 ℃ through the condensing pipe.
10. The hand-held sampling device and method of smoke particles of claim 8, wherein: the fan can be a draught fan, and the flow speed of the flue gas is controlled to be 5-30cm/s by the draught fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881542.XA CN112051114B (en) | 2020-08-27 | 2020-08-27 | Handheld flue gas particulate sampling device and method |
Applications Claiming Priority (1)
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