CN114593959A - Sampling device for collecting soot samples in flame by utilizing thermophoresis phenomenon - Google Patents
Sampling device for collecting soot samples in flame by utilizing thermophoresis phenomenon Download PDFInfo
- Publication number
- CN114593959A CN114593959A CN202210196441.8A CN202210196441A CN114593959A CN 114593959 A CN114593959 A CN 114593959A CN 202210196441 A CN202210196441 A CN 202210196441A CN 114593959 A CN114593959 A CN 114593959A
- Authority
- CN
- China
- Prior art keywords
- sampling
- probe
- flame
- thermophoresis
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 180
- 239000004071 soot Substances 0.000 title claims abstract description 41
- 238000001089 thermophoresis Methods 0.000 title claims abstract description 25
- 239000000523 sample Substances 0.000 claims abstract description 195
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2285—Details of probe structures
Abstract
The invention belongs to the technical field of soot particle collection, and particularly discloses a sampling device for collecting soot samples in flame by utilizing thermophoresis, which comprises: the device comprises an acquisition platform, a fixed frame, a probe assembly and a driving device; the probe assembly is provided with a probe rod, a first probe piece, a second probe piece and a sampling grid; the first probe sheet is provided with a mounting groove and a sampling hole. The mounting groove is used for laying sampling grid, second probe piece and the laminating of first probe piece and seal the mounting groove, in order to form sampling probe, then one of them face of sampling grid seals, the another side of sampling grid corresponds the sampling hole, then when sampling probe stretches into and samples in the flame, the soot passes through the sampling hole and attaches to the single face of sampling grid, in order to avoid the soot to attach to the both sides face of sampling grid, reduce the overlapping phenomenon of soot at sampling grid, in order to guarantee that the sample image of the sampling grid that transmission electron microscope observed is clear, improve the sampling success rate, improve sampling efficiency, guarantee that the analysis can normally go on.
Description
Technical Field
The invention relates to the technical field of soot particle collection, in particular to a sampling device for collecting soot samples in flame by utilizing thermophoresis.
Background
Soot is one of important products of laminar flame, and in order to obtain the evolution process of the form of soot in flame, the soot in flame needs to be sampled by a sampling device and then analyzed. The existing sampling device mainly comprises a sampling probe, a moving mechanism, an equipment mounting table and the like. When the sample is collected, flame is combusted in the combustion chamber, the moving mechanism clamping the sampling probe enters the cavity from the outside and then stretches into the flame, the grid on the probe stretches out after the sample is collected, then the collected sample can be observed by using a transmission electron microscope, and the result is obtained by analyzing. However, when the grid collects the sample, the phenomenon of soot overlapping easily occurs, the image of the soot overlapped sample observed by the transmission electron microscope is blurred, so that the sampling fails, the sampling needs to be re-sampled, the sampling success rate of the sampling device is low, the sampling efficiency is low, and the analysis progress is influenced.
Disclosure of Invention
The purpose of the invention is: the sampling device for collecting the soot samples in the flame by utilizing the thermophoresis phenomenon is provided, so that the technical problems of low sampling success rate and low sampling efficiency of the sampling device in the prior art are solved.
In order to achieve the above object, the present invention provides a sampling device for collecting soot samples in flames by using thermophoresis, comprising: the probe device comprises a collecting table, a fixing frame, a probe assembly and a driving device for pushing the probe assembly to move back and forth along a first linear direction; the fixed frame is arranged on the acquisition platform, and the probe assembly is provided with a probe rod, a first probe sheet, a second probe sheet and a sampling grid; a placing groove for placing the sampling grid is formed in the first side surface of the first probe sheet, and sampling holes communicated with the placing groove are formed in the second side surface of the first probe sheet; the second probe sheet is attached to the first side face of the first probe and seals the placing groove; the first end of the probe rod is connected with the first probe sheet and the second probe sheet, and the second end of the probe rod is connected with the driving device.
Preferably, the driving device has a driving block moving back and forth along the first linear direction, the driving block is connected with the second end of the probe rod, the driving block is provided with a guide rod having a length direction parallel to the first linear direction, and the fixing frame is provided with a guide block slidably connected with the guide rod.
Preferably, the acquisition platform is provided with a stand column with a slide rail, the length direction of the slide rail is vertical, the fixing frame is provided with a slide block connected with the slide rail in a sliding manner, and the slide block is provided with a set screw pressing the slide rail.
Preferably, the first end of the probe shaft is provided with a clamping groove for receiving the first probe tile and the second probe tile.
Preferably, the probe rod is provided with a first positioning hole communicated with the clamping groove, and the first probe sheet and the second probe sheet are both provided with a second positioning hole corresponding to the first positioning hole.
Preferably, the length directions of the probe rod, the first probe sheet and the second probe sheet are parallel to the first linear direction, and the mounting slot is located at one end of the first probe sheet, which is far away from the driving device.
Preferably, the first probe sheet and the second probe sheet are overlapped to form a sampling probe, and an arc-shaped part is arranged at one end of the sampling probe, which is far away from the driving device.
Preferably, the sampling grid is circular in shape, and the mounting groove is a circular groove matched with the sampling grid in size.
Preferably, the sampling device for collecting soot samples in flames by utilizing thermophoresis further comprises: a sampling chamber; a combustion cavity is arranged in the sampling chamber, a sampling port is arranged on the first side of the combustion cavity, the position of the sampling port is opposite to the probe assembly, and the driving device drives the probe assembly to extend into and out of the sampling port; the upside in burning chamber is provided with the chimney, the sampling chamber is provided with and is used for the closing cap the flexible sealed curtain of polylith of sampling port.
Preferably, the second side of the combustion chamber is provided with a transparent window.
The sampling device for collecting the carbon smoke sample in the flame by utilizing the thermophoresis phenomenon has the beneficial effects that: the first side of first probe piece is provided with the mounting groove that is used for laying the sampling grid, the second probe piece laminates and seals the mounting groove with the first side of first probe piece, in order to form sampling probe, then the second probe piece seals one of them face of the sampling grid in the mounting groove, let the another side of sampling grid correspond the sampling hole, when sampling probe stretches into flame along first linear direction under drive arrangement's drive and samples, the soot of flame only attaches on the single face of sampling grid through the sampling hole, in order to avoid the soot to attach on the both sides face of sampling grid, reduce the overlapping phenomenon of soot at the sampling grid, sample image with the sampling grid of guaranteeing transmission electron microscope observation is clear, guarantee that the sampling is effective, improve the sampling success rate, improve sampling efficiency, guarantee that the analysis can normally go on.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of a sampling device for collecting soot samples in flames by utilizing a thermophoresis phenomenon according to an embodiment of the invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the assembled first probe sheet, second probe sheet and sampling grid of the present invention;
FIG. 4 is an exploded view of a probe assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of an assembly structure of the fixing frame, the driving device, the probe assembly and the upright post according to the embodiment of the invention;
FIG. 6 is a schematic cross-sectional view of a sampling chamber and probe assembly in accordance with an embodiment of the present invention.
In the figure, 100, an acquisition station; 110. a column; 120. a slide rail; 200. a fixed mount; 210. a guide block; 220. a slider; 230. tightening the screw; 300. a probe assembly; 310. a probe shaft; 311. a clamping groove; 312. a first positioning hole; 320. a first probe sheet; 321. a placing groove; 322. a sampling hole; 330. a second probe sheet; 340. sampling a grid; 350. a second positioning hole; 360. an arc-shaped portion; 400. a drive device; 410. a drive block; 420. a guide bar; 500. a sampling chamber; 510. a combustion chamber; 520. a sampling port; 530. a chimney; 540. a flexible sealing curtain; 550. a transparent window; 560. a combustion nozzle.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to fig. 6, a sampling device for collecting soot samples in flames by using thermophoresis according to an embodiment of the present invention will be described.
Referring to fig. 1 to 4, a sampling device for collecting soot samples in flames by using a thermophoresis phenomenon according to an embodiment of the present invention includes: the probe assembly comprises a collecting table 100, a fixing frame 200, a probe assembly 300 and a driving device 400 for pushing the probe assembly 300 to move back and forth along a first linear direction; the fixing frame 200 is arranged on the collecting station 100, and the probe assembly 300 is provided with a probe rod 310, a first probe sheet 320, a second probe sheet 330 and a sampling grid 340; a mounting groove 321 for mounting the sampling grid 340 is formed on a first side surface of the first probe sheet 320, and a sampling hole 322 communicated with the mounting groove 321 is formed on a second side surface of the first probe sheet 320; the second probe sheet 330 is attached to the first side surface of the first probe and seals the mounting groove 321; the first end of the probe shaft 310 is connected to the first probe card 320 and the second probe card 330, and the second end of the probe shaft 310 is connected to the driving means 400.
The collecting station 100 is used for supporting the fixing frame 200, the probe assembly 300 and the driving device 400, the sampling hole 322 is disposed at a position corresponding to the mounting groove 321 on the second side of the first probe sheet 320, and the size of the sampling hole 322 is smaller than the size of the bottom surface of the mounting groove 321, so that the sampling grid 340 is stably mounted in the mounting groove 321. The first side surfaces of the second probe sheet 330 and the first probe sheet 320 are attached to and close the mounting groove 321 to form a sampling probe, one surface of the sampling grid 340 is closed by the second probe sheet 330, the other surface of the sampling grid 340 corresponds to the sampling hole 322, and when the sampling probe is driven by the driving device 400 to extend into flame along the first linear direction for sampling, soot of the flame is attached to the single surface of the sampling grid 340 only through the sampling hole 322 to prevent the soot from being attached to the two side surfaces of the sampling grid 340, so that the overlapping phenomenon of the soot on the sampling grid 340 is reduced, a clear sample image of the sampling grid 340 observed by the transmission electron microscope is ensured, the sampling is ensured to be effective, the sampling success rate is improved, the sampling efficiency is improved, and the analysis can be normally performed.
The first side surface of the first probe sheet 320 of the sampling device for collecting soot samples in flame by using thermophoresis of the embodiment is provided with a mounting groove 321 for mounting the sampling grid 340, the second probe sheet 330 is attached to the first side surface of the first probe sheet 320 and seals the mounting groove 321 to form a sampling probe, then the second probe sheet 330 seals one surface of the sampling grid 340 in the mounting groove 321, the other surface of the sampling grid 340 corresponds to the sampling hole 322, when the sampling probe is driven by the driving device 400 to extend into flame along the first linear direction for sampling, soot of the flame is attached to the single surface of the sampling grid 340 only through the sampling hole 322, so as to avoid the soot from being attached to the two side surfaces of the sampling grid 340, reduce the overlapping phenomenon of the soot on the sampling grid 340, so as to ensure that the sample image of the sampling grid 340 observed by a transmission electron microscope is clear and the sampling is effective, the sampling success rate is improved, the sampling efficiency is improved, and the analysis can be normally carried out.
The sampling grid 340 is a TEM grid commonly used in the market for observation by a Transmission Electron Microscope, and english of the Transmission Electron Microscope is Transmission Electron Microscope, which is abbreviated as TEM. The general sampling probes are horizontally moved and inserted into the flame, and the first linear direction of the embodiment is a horizontal direction. The driving device 400 is an air cylinder, but the driving device 400 may be a linear driving device such as an oil cylinder or an electric push rod.
It should be mentioned that the sampling device of this embodiment is used for sampling by contact, that is, the sampling probe is inserted into the flame and samples by thermophoresis. The thermophoresis phenomenon refers to a phenomenon in which, in a gas having a temperature gradient, a particle moves from a high-temperature portion to a low-temperature portion because a gas molecule in the higher-temperature portion collides with the particle with higher kinetic energy than a gas molecule in the lower-temperature portion.
In a preferred embodiment of the present invention, referring to fig. 5, the driving apparatus 400 has a driving block 410 moving back and forth in a first linear direction, the driving block 410 is connected to the second end of the probe shaft 310, the driving block 410 is provided with a guide rod 420 having a length direction parallel to the first linear direction, and the holder 200 is provided with a guide block 210 slidably connected to the guide rod 420. The driving block 410 moves back and forth along a first linear direction under the driving of the driving device 400 to drive the probe rod 310 and the first probe sheet 320, the second probe sheet 330 and the sampling grid 340 on the probe rod 310 to move back and forth, so that the sampling grid 340 enters the flame for sampling. When the driving rod moves, the guide rod 420 moves back and forth at the guide block 210 to reduce the vibration of the driving block 410 during the back and forth movement, so that the movement of the probe rod 310, the first probe sheet 320, the second probe sheet 330 and the sampling grid 340 is more stable, and the high-frequency vibration of the first probe sheet 320, the second probe sheet 330 and the sampling grid 340 during the sudden stop of the driving device 400 is reduced to reduce the sampling error.
In a preferred embodiment of the present invention, referring to fig. 1 and 5, the collecting table 100 is provided with a vertical column 110 having a sliding rail 120, the sliding rail 120 is vertically arranged in a length direction, the fixing frame 200 is provided with a sliding block 220 slidably connected with the sliding rail 120, and the sliding block 220 is provided with a set screw 230 pressing against the sliding rail 120. The sliding block 220 is provided with a threaded hole in threaded connection with the set screw 230, and tightening the set screw 230 can gradually bring the insertion end of the set screw 230 close to the sliding rail 120, so that the set screw 230 presses the sliding rail 120 to fix the position between the sliding rail 120 and the sliding block 220, so as to fix the height of the current fixing frame 200, i.e. fix the heights of the probe rod 310, the first probe sheet 320, the second probe sheet 330, and the sampling grid 340. When the height needs to be adjusted, the set screw 230 can be unscrewed, so that the set screw 230 is separated from the slide rail 120, and then the sliding block 220 can slide with the slide rail 120 to adjust the height of the fixing frame 200 and adjust the height of the probe assembly 300 extending into the flame; after the height adjustment of the fixing frame 200 is completed, the set screw 230 is tightened to fix the height of the fixing frame 200.
In a preferred embodiment of the present invention, referring to fig. 1, 2, and 4, a first end of a probe bar 310 is provided with a clamping groove 311 for seating a first probe tile 320 and a second probe tile 330. The clamping grooves 311 are used for carrying the first probe card 320 and the second probe card 330, so as to make the first probe card 320 and the second probe card 330 closely fit, and better to say, the first probe card 320 and the second probe card 330 are mounted on the probe rod 310.
In a preferred embodiment of the present invention, referring to fig. 1, 2 and 4, the probe shaft 310 is provided with a first positioning hole 312 communicating with the clamping groove 311, and the first probe sheet 320 and the second probe sheet 330 are each provided with a second positioning hole 350 corresponding to the first positioning hole 312. The probe rod 310 can pass through the first positioning hole 312 and the two second positioning holes 350 by positioning pins so as to fix the first probe tile 320 and the second probe tile 330 at the same position on the probe rod 310 for multiple sampling. After sampling, the sampling grids 340 on the first probe sheet 320 and the second probe sheet 330 need to be taken down, then the new sampling grids 340 are replaced to perform second sampling in the mounting groove 321, the first positioning holes 312 and the second positioning holes 350 are adopted to correspond to each other, so that the first probe sheet 320 and the second probe sheet 330 can be positioned quickly, the moving distance of the driving device 400 for driving the probe assembly 300 can be controlled conveniently, and the probe assembly 300 can extend into the corresponding position in the flame for sampling.
In a preferred embodiment of the present invention, referring to fig. 1 and 5, the probe shaft 310, the first probe tile 320 and the second probe tile 330 have a length direction parallel to the first linear direction, and the mounting groove 321 is located at an end of the first probe tile 320 away from the driving device 400. The sampling probe formed by the first probe sheet 320 and the second probe sheet 330 and the probe rod 310 form a linear probe head, so that the driving device 400 can drive the probe assembly 300 to linearly extend into the flame for sampling, and the structural design and the process control are facilitated.
In a preferred embodiment of the present invention, referring to fig. 2 and 4, the first probe tile 320 and the second probe tile 330 overlap to form a sampling probe, and an end of the sampling probe facing away from the driving device 400 is provided with an arc-shaped portion 360. The arc portion 360 can make the one end that the sampling probe stretched into flame more slick and sly, reduces the influence to flame when the sampling probe stretched into flame to reduce the sampling error.
In the preferred embodiment of the present invention, the sampling grid 340 is circular in shape and the seating groove 321 is a circular groove sized to match the sampling grid 340. The sampling hole 322 is also circular, the circular sampling grid 340 is convenient to place on a transmission electron microscope for observation, the size of the circular groove needs to be matched with that of the sampling grid 340, the sampling grid 340 is convenient to install and unfold, and the gap of the circular groove is reduced.
In a preferred embodiment of the present invention, referring to fig. 1 and 6, a sampling device for collecting soot samples in flames by using thermophoresis further includes: a sampling chamber 500; a combustion cavity 510 is arranged in the sampling chamber 500, a sampling port 520 is arranged on a first side of the combustion cavity 510, the sampling port 520 is opposite to the probe assembly 300, and the driving device 400 drives the probe assembly 300 to extend into and out of the sampling port 520; the upper side of the combustion chamber 510 is provided with a chimney 530 and the sampling chamber 500 is provided with a plurality of flexible sealing curtains 540 for covering the sampling ports 520. The bottom of the combustion chamber 510 of the sampling chamber 500 is provided with a combustion nozzle 560 for ejecting combustion gas to generate a flame. The driving means 400 drives the first probe card 320, the second probe card 330 and the sampling grid 340 of the probe assembly 300 into the sampling port 520 along a first linear direction so that the first probe card 320, the second probe card 330 and the sampling grid 340 protrude into the flame in the combustion chamber 510 for sampling. The flexible sealing curtain 540 is a flexible strip that reduces air turbulence to form an inwardly opening flexible curtain structure, and the probe assembly 300 can be positioned adjacent to the gap of the flexible sealing curtain 540 to pass through the sampling port 520 into the combustion chamber 510 for sampling. The stack 530 is used to discharge the output combusted gases for collection and discharge.
In a preferred embodiment of the present invention, referring to FIG. 6, the second side of the combustion chamber 510 is provided with a transparent window 550. The transparent window 550 allows a sampling person to better view the combustion of the flame and to view the position of the probe assembly 300 extending into the flame, facilitating adjustment of the position of the sampling probe extending into the flame.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A sampling device for collecting soot samples in flame by utilizing thermophoresis is characterized by comprising: the probe device comprises a collecting table, a fixing frame, a probe assembly and a driving device for pushing the probe assembly to move back and forth along a first linear direction; the fixed frame is arranged on the acquisition platform, and the probe assembly is provided with a probe rod, a first probe sheet, a second probe sheet and a sampling grid; a placing groove for placing the sampling grid is formed in the first side surface of the first probe sheet, and sampling holes communicated with the placing groove are formed in the second side surface of the first probe sheet; the second probe sheet is attached to the first side face of the first probe and seals the placing groove; the first end of the probe rod is connected with the first probe sheet and the second probe sheet, and the second end of the probe rod is connected with the driving device.
2. The sampling device for collecting soot samples in flame using thermophoresis according to claim 1, wherein the driving device has a driving block moving back and forth along the first linear direction, the driving block is connected to the second end of the probe rod, the driving block is provided with a guide rod having a length direction parallel to the first linear direction, and the fixing frame is provided with a guide block slidably connected to the guide rod.
3. The sampling device for collecting soot samples in flames according to the thermophoresis phenomenon, as claimed in claim 1, wherein the collecting table is provided with a column with a slide rail, the length direction of the slide rail is vertical, the fixing frame is provided with a slide block slidably connected with the slide rail, and the slide block is provided with a set screw pressing against the slide rail.
4. The sampling device for collecting soot samples in flame using thermophoresis according to claim 1, wherein the first end of the probe rod is provided with a clamping groove for mounting the first probe sheet and the second probe sheet.
5. The sampling device for collecting soot samples in flame by utilizing thermophoresis according to claim 4, wherein the probe rod is provided with a first positioning hole communicated with the clamping groove, and the first probe piece and the second probe piece are both provided with a second positioning hole corresponding to the first positioning hole.
6. The sampling device for collecting soot samples in flame by utilizing thermophoresis according to claim 1, wherein the length directions of the probe rod, the first probe sheet and the second probe sheet are parallel to the first linear direction, and the placement groove is located at one end of the first probe sheet far away from the driving device.
7. The sampling device for collecting soot samples in flame by utilizing thermophoresis according to claim 6, wherein the first probe sheet and the second probe sheet are overlapped to form a sampling probe, and an arc-shaped part is arranged at one end of the sampling probe, which is far away from the driving device.
8. The sampling device for collecting soot samples in a flame using thermophoresis according to claim 1, wherein the sampling grid is circular in shape, and the seating groove is a circular groove matched in size with the sampling grid.
9. The sampling device for collecting soot samples in a flame using thermophoresis according to claim 1, further comprising: a sampling chamber; a combustion cavity is arranged in the sampling chamber, a sampling port is arranged on the first side of the combustion cavity, the position of the sampling port is opposite to the probe assembly, and the driving device drives the probe assembly to extend into and out of the sampling port; the upside in burning chamber is provided with the chimney, the sampling chamber is provided with and is used for the closing cap the polylith flexible seal curtain of sampling port.
10. The device for sampling soot in a flame using thermophoresis of claim 9, wherein the second side of the combustion chamber is provided with a transparent window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210196441.8A CN114593959A (en) | 2022-03-01 | 2022-03-01 | Sampling device for collecting soot samples in flame by utilizing thermophoresis phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210196441.8A CN114593959A (en) | 2022-03-01 | 2022-03-01 | Sampling device for collecting soot samples in flame by utilizing thermophoresis phenomenon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114593959A true CN114593959A (en) | 2022-06-07 |
Family
ID=81807499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210196441.8A Pending CN114593959A (en) | 2022-03-01 | 2022-03-01 | Sampling device for collecting soot samples in flame by utilizing thermophoresis phenomenon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114593959A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3791743A (en) * | 1973-03-21 | 1974-02-12 | Bethlehem Steel Corp | Portable flame photometer and sampling probe |
| CN112461607A (en) * | 2020-11-12 | 2021-03-09 | 南京理工大学 | Opposite-impact diffusion flame soot particle sampling device and sampling method thereof |
-
2022
- 2022-03-01 CN CN202210196441.8A patent/CN114593959A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3791743A (en) * | 1973-03-21 | 1974-02-12 | Bethlehem Steel Corp | Portable flame photometer and sampling probe |
| CN112461607A (en) * | 2020-11-12 | 2021-03-09 | 南京理工大学 | Opposite-impact diffusion flame soot particle sampling device and sampling method thereof |
Non-Patent Citations (1)
| Title |
|---|
| M. LESCHOWSKI等: ""An automated thermophoretic soot sampling device for laboratory-scale high-pressure flames"" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114593959A (en) | Sampling device for collecting soot samples in flame by utilizing thermophoresis phenomenon | |
| CN217490941U (en) | Vacuum low-temperature device for cuvette measurement | |
| CN216349844U (en) | Gas sampling device for air filter | |
| CN218157111U (en) | Height-adjustable's atmosphere trapping apparatus for detection | |
| CN215761195U (en) | Glass window connecting piece | |
| CN115093952A (en) | PCR detector and detection method thereof | |
| CN215218692U (en) | Gas chromatograph convenient to carry | |
| CN111678940B (en) | Compact rock pyrolysis analysis evaluation appearance | |
| CN212302867U (en) | Fire source area module of module-assembled tunnel fire model test system | |
| CN219842401U (en) | Gas analyzer for detecting carbon dioxide content in waste gas | |
| CN220207568U (en) | Flue gas emission detector convenient to maintain | |
| CN219978208U (en) | Mass spectrum combined instrument for environment detection | |
| CN219777244U (en) | Multi-point multi-depth sampling structure based on integrated CEMS system | |
| CN217605531U (en) | Material testing machine adopting constant temperature system | |
| CN215727698U (en) | Building energy-saving effect detection device | |
| CN220120705U (en) | Fume emission continuous monitoring cabinet and system | |
| CN213985877U (en) | Boiler efficiency test flue gas sampling device | |
| CN213689103U (en) | Sampling device for gas analysis | |
| CN219552368U (en) | Building material fire behavior detection device | |
| CN212622189U (en) | Photoacoustic spectrum oil gas detection device | |
| CN219142773U (en) | Air detector places case with dustproof function | |
| CN214895969U (en) | Intermittent type formula photochopper | |
| CN214622204U (en) | Outdoor installation waterproof beta ray particulate matter detector | |
| CN217359768U (en) | Micro-water tester with built-in filter | |
| CN219038897U (en) | Heat conduction flame retardant detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220607 |