CN110595846A - Dust distributing and distributing device for testing atmosphere monitoring equipment and testing device - Google Patents
Dust distributing and distributing device for testing atmosphere monitoring equipment and testing device Download PDFInfo
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- CN110595846A CN110595846A CN201910859613.3A CN201910859613A CN110595846A CN 110595846 A CN110595846 A CN 110595846A CN 201910859613 A CN201910859613 A CN 201910859613A CN 110595846 A CN110595846 A CN 110595846A
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- 239000000428 dust Substances 0.000 title claims abstract description 132
- 238000012360 testing method Methods 0.000 title claims abstract description 113
- 238000012544 monitoring process Methods 0.000 title claims abstract description 54
- 238000005070 sampling Methods 0.000 claims abstract description 90
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 230000009471 action Effects 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000012806 monitoring device Methods 0.000 claims description 38
- 239000013618 particulate matter Substances 0.000 claims description 22
- 238000009826 distribution Methods 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000012528 membrane Substances 0.000 description 36
- 239000002245 particle Substances 0.000 description 30
- 238000005259 measurement Methods 0.000 description 9
- 241000883990 Flabellum Species 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000008277 atmospheric particulate matter Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000012864 cross contamination Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G9/00—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00
- G01G9/005—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00 using radiations, e.g. radioactive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
- G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration
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- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a dust dispersing and distributing device for testing atmosphere monitoring equipment, which is used for uniformly providing a fluid containing particulate matters for testing for a host of the atmosphere monitoring equipment, and comprises the following components: the main body structure is connected to a host of the atmosphere monitoring equipment; the main runner of the main structure is internally provided with a support and fan blades, the support is fixed in the main structure, the fan blades are connected to the support, the fluid containing the particulate matters for testing is conveyed to the lower part of the fan blades, and when the main machine works through the atmosphere monitoring equipment, the sampling air flow in the main runner of the main structure blows the fan blades to perform stirring action, and the fluid containing the particulate matters for testing is uniformly distributed in the sampling air flow. The invention relates to a dust dispersing and distributing device for testing atmosphere monitoring equipment, which can realize dust dispersing for testing online sampling equipment. In addition, the invention also discloses a testing device of the atmosphere monitoring equipment.
Description
Technical Field
The invention relates to the technical field of testing of online environment air sampling equipment, in particular to a dust distribution and distribution device and a testing device for testing atmosphere monitoring equipment, which can realize dust distribution and distribution for testing the online environment air sampling equipment.
Background
Aiming at an atmospheric sampling device, in particular to an online environment atmospheric particulate monitoring device, the existing test verification mode is to place the device in an actual atmospheric environment and select a proper time period to carry out long-period test. The testing method has the advantages of long testing period, high cost and poor testing reproducibility, and is not beneficial to technical improvement and rapid industry development.
The applicant filed an application on 24/5/2019 with the publication numbers: 110082270A, application number: 201910439212.2, the name is: a multifunctional linked temperature, pressure and humidity equalizing dual-mode gaseous environment simulation system capable of adding dust, which is disclosed in the accompanying drawings 1-4 and the description thereof, particularly the detailed implementation modes [0035] - [0054], particularly the detailed implementation modes [0039], [0048], [0049], wherein the detailed implementation modes [0039 ]: the invention tests equipment with larger volume, comprising: two important parts of cutting head and host computer, when needing to test whole atmospheric particulates sampling equipment, can place cutting head and host computer at second box 21 and first box 11 respectively, and pass the sampling passageway between cutting head and the host computer interface channel 3 has so realized testing on the whole to atmospheric particulates sampling equipment. … … [0048 ]: a dust insulation device is arranged at the communication position of the second box bodies 21 and the second circulation pipeline 232, and after the second temperature and humidity atmosphere in the second box bodies 21 is subjected to dust insulation and filtration through the dust insulation device, the second temperature and humidity atmosphere is circulated through the second circulation pipeline 232. Through setting up it is a plurality of to prevent the dust device that ends dirt between the second box 11, simultaneously, through setting up the dust device ends dirt can realize simulating various temperature and humidity pressure environment fast in the laboratory, lets atmospheric particulates sampling equipment can be at the test performance that ends dirt of various temperature and humidity pressure environment.
It should be noted that a dust insulation device is disposed at a communication position between the first tank 11 and the first circulation pipe 132, and a dust insulation device is disposed at a communication position between the second tank 21 and the second circulation pipe 232. Under the condition, the atmospheric particulate sampling equipment can be tested under the completely dust-free condition to meet the test standard, in addition, the test under the dust-free condition belongs to a test of a specific situation, under the condition that no particulate matters are added, no matter what state the first temperature-humidity-pressure atmosphere and the second temperature-humidity-pressure atmosphere are, the particulate matter data measured by the atmospheric particulate sampling equipment should be 0, the measurement deviation must be in a proper error range, otherwise, the test of the atmospheric particulate sampling equipment is not accurate.
In the patent application of the invention of the applicant, a clear technical scheme is disclosed, and the temperature and humidity atmosphere inside the first box body 11 and the second box body 12 can be independently controlled, so that the volume of a test space can be greatly reduced, the pressure-bearing condition of a test can be ensured, the multifunctional linked temperature, pressure and humidity equalizing and heating dual-mode dust gaseous environment simulation system is convenient to produce, manufacture, transport and store, and the manufacturing and using cost is reduced as much as possible.
The applicant's patent can well test the accuracy of the atmospheric monitoring device in various wet and warm pressure environments in a dust-free state, that is, the measured particulate data of the atmospheric particulate sampling device should be 0, and the measurement deviation must be within a proper error range, however, the accuracy test in a dust-added state in the world still is in a groping stage at present, and a better solution is not found.
In the prior art, two difficulties are caused in uniformly adding dust to an atmospheric particulate sampling device, namely how to accurately add dust and how to uniformly add dust. The two difficulties are the technological gaps in the current technical field. The publication number is: 110082270A, application number: 201910439212.2, the name is: the patent application of the multifunctional linked temperature-equalizing, pressure-equalizing and humidity-equalizing dust-adding dual-mode gaseous environment simulation system is characterized in that the dual-mode gaseous environment simulation system is adopted, a cutting head and a host of an atmosphere sampling device are separately tested, a sampling channel is contained in a connecting channel, and sealing structures are arranged in gaps between two ends of the sampling channel and the connecting channel. Therefore, when the dust is required to be added to the atmosphere sampling device, the dust can be directly added to the main machine of the atmosphere sampling device only by opening the connecting channel, but when the dust is added, how to accurately add the dust and how to uniformly add the dust still belong to the technical blank of no research.
Therefore, a dust dispersing and distributing device for testing an atmosphere monitoring device, which can disperse dust for testing an online sampling device, is needed.
Disclosure of Invention
The invention aims to provide a dust dispersing and distributing device for testing an atmosphere monitoring device, which can realize dust dispersing for testing an online sampling device.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the utility model provides a dispersion cloth dirt device that test atmosphere monitoring facilities used for when testing atmosphere monitoring facilities, connect on atmosphere monitoring facilities's host computer, evenly provide the fluid that contains the particulate matter of test for atmosphere monitoring facilities's host computer, include:
the main body structure is a hollow structure and is connected to a host of the atmosphere monitoring equipment;
the dust distribution mechanism is arranged inside a main flow channel of the main structure and comprises a support and fan blades, the support is fixed in the main structure, the fan blades are connected to the support, the fluid containing the particulate matters for testing is conveyed to the position below the fan blades and passes through the main machine of the atmosphere monitoring equipment during working, the sampling air flow inside the main flow channel of the main structure blows the fan blades to perform stirring action, and the fluid containing the particulate matters for testing is uniformly distributed in the sampling air flow.
The dust feeding device comprises a main structure and is characterized by further comprising a dust feeding pipeline, wherein an inlet of the dust feeding pipeline is connected with an external dust supply device, and an outlet of the dust feeding pipeline extends into the main structure and is located below the fan blades.
The part of the dust conveying pipeline, which is positioned in the main body structure, is of a flexible structure.
The dust feeding pipeline is positioned in the main body structure, and the part of the dust feeding pipeline penetrates through the inner ring of the bearing to be connected with the fan blades.
The outlet of the dust conveying pipeline is designed to be of an inverted trapezoidal structure.
In order to achieve the above object, the present invention further provides a testing apparatus for an atmosphere monitoring device, which is connected to a host of the atmosphere monitoring device, and accurately and uniformly supplies a fluid containing particulate matter for testing to the host of the atmosphere monitoring device, the testing apparatus comprising:
a dust supply device for providing a precise weight of a particulate matter-containing fluid for testing;
a distributed dust device connected to the dust supply device, comprising:
the main body structure is a hollow structure and is connected to a host of the atmosphere monitoring equipment;
the dust distribution mechanism is arranged inside a main flow channel of the main structure and comprises a support and fan blades, the support is fixed in the main structure, the fan blades are connected to the support, the fluid containing the particulate matters for testing is conveyed to the position below the fan blades and passes through the main machine of the atmosphere monitoring equipment during working, the sampling air flow inside the main flow channel of the main structure blows the fan blades to perform stirring action, and the fluid containing the particulate matters for testing is uniformly distributed in the sampling air flow.
The dust feeding device comprises a main structure and is characterized by further comprising a dust feeding pipeline, wherein an inlet of the dust feeding pipeline is connected with an external dust supply device, and an outlet of the dust feeding pipeline extends into the main structure and is located below the fan blades.
The part of the dust conveying pipeline, which is positioned in the main body structure, is also suspended on the inner wall of the dust conveying pipeline through a bracket.
The dust feeding pipeline is positioned in the main body structure, and the part of the dust feeding pipeline penetrates through the inner ring of the bearing to be connected with the fan blades.
The outlet of the dust conveying pipeline is designed to be of an inverted trapezoidal structure.
Compared with the prior art, the dispersing and dust distributing device for the atmosphere monitoring equipment comprises: the main body structure is a hollow structure and is connected to a host of the atmosphere monitoring equipment; the dust distribution mechanism is arranged inside the main structure and comprises a support and fan blades, the support is fixed on the inner wall of the main structure, the fan blades are connected to the support, the fluid containing the particulate matters for testing is conveyed to the lower portion of the fan blades and passes through the main machine of the atmosphere monitoring equipment during working, the sampling air flow inside the main flow channel of the main structure blows the fan blades to perform stirring action, so that the fluid containing the particulate matters for testing is uniformly distributed in the sampling air flow.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
FIG. 1 is a schematic view of a dust dispersing and distributing device for testing an atmosphere monitoring apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view showing the dust dispersing and distributing device for testing the atmosphere monitoring device shown in fig. 1 connected with the atmosphere monitoring device.
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 some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Referring to fig. 1 and 2, a dust dispersing and distributing device 100 for testing an atmosphere monitoring device is provided, which is used for connecting to a host of the atmosphere monitoring device 50 when testing the atmosphere monitoring device 50, and uniformly supplying a fluid containing particulate matters for testing to the host of the atmosphere monitoring device 50. The atmospheric monitoring device 50, especially an online atmospheric monitoring device, needs to be tested before shipment and periodically during service in order to ensure the accuracy of the test data output by the sampling device and prevent the data of the sampling device from being falsified.
Taking an online atmosphere monitoring device as an example, an atmosphere particulate enrichment module is usually disposed inside the device, and specifically, the atmosphere particulate enrichment module is usually a paper filter membrane (hereinafter, the paper filter membrane is exemplarily described). The environment air is sucked into the cutter by the constant current of the sampling pump and is cut into particles meeting the technical requirements, the particles in the environment air are finally enriched on the paper filter membrane through the sampling channel, the existing technology is that the particles enriched on the paper filter membrane are irradiated by beta rays, the strength of the beta rays can be attenuated at the moment, and the weight of the particles can be calculated by measuring the beta rays.
The particulate cutter is accurate given that it has been precisely calibrated before shipment (calibration of the particulate cutter is not within the scope of the present invention's solution). Therefore, when the atmospheric monitoring equipment is calibrated, only the host of the atmospheric monitoring equipment needs to be tested. Before leaving a factory or in the using process of the atmospheric particulate sampling equipment, the reliability, stability and accuracy of the work of the atmospheric particulate sampling equipment need to be tested, and the atmospheric particulate sampling equipment can be placed in a place with the publication number as described in the background technology: 110082270A, application number: 201910439212.2, the name is: the multifunctional linked temperature-equalizing, pressure-equalizing, humidity-equalizing and dust-adding dual-mode gaseous environment simulation system is used for testing.
When a host of an atmospheric monitoring device is used for testing, the current technology generally adjusts the temperature and humidity pressure parameters of the environment where the atmospheric particulate sampling device is located, and in the state of 0 plus dust (i.e. no particulate is added), the weight of the atmospheric particulate matter enriched on a paper filter membrane detected by beta rays is about 0, and the difference is within the error allowable range, so as to test the accuracy of the sampling device. This test is not perfect and has drawbacks. Therefore, in order to compensate for the defects, in the testing process, the particulate matters meeting the technical requirements and having a known weight of M0 are put into the sampling channel, under the action of the sampling pump, the particulate matters are enriched on the paper filter membrane through the sampling channel, the particulate matters enriched on the paper filter membrane are irradiated by beta rays, the intensity of the beta rays is attenuated, the weight of the particulate matters is calculated through the measurement of the beta rays, the M1 is calculated, and the difference between the M0 and the M1 is compared, so that whether the accuracy of the equipment monitored by the atmosphere meets the requirements or not can be determined. Multiple measurements can be made to improve the accuracy of the test. Above-mentioned technical scheme, artifical input known weight M0's the particulate matter that accords with technical requirement, then so can meet a great problem, be exactly the particulate matter can not put in the paper filter membrane uniformly, consequently, how to realize throwing in the paper filter membrane uniformly with the particulate matter, become the essential important link of test atmosphere monitoring facilities indispensable, need carry out even dust distribution to atmospheric particulates through even dust distribution device promptly.
The dispersed dust distribution device 100 for testing the atmosphere monitoring apparatus includes:
the main body structure 1 is a hollow structure, and the main body structure 1 is connected to a host of the atmosphere monitoring equipment 50; specifically, the main body structure 1 is a tubular structure, which can be hermetically connected to the upper end (sampling channel) of the sampling channel of the main body of the atmosphere monitoring device 50, and can uniformly supply dust to the main body of the atmosphere monitoring device 50 instead of a particulate cutter. In the present invention, "dust" means particulate matter and is supplied in the form of a fluid containing the particulate matter.
In a preferred embodiment, the main body structure 1 has an outer shape conforming to the size of the sampling channel of the main body of the atmosphere monitoring device 50, and preferably is threadably connected to the sampling channel to achieve a sealed and smooth transition connection with the sampling channel, so as not to cause additional resistance to the flow of the fluid containing particles.
Disperse cloth dirt mechanism 2, disperse cloth dirt mechanism 2 locates inside major structure 1's sprue, including support 21 and flabellum 22, support 21 is fixed in 1 inner wall department of major structure, flabellum 22 connect with rotatoryly on the support 21, the fluid that contains the particulate matter of test send to the below department of flabellum 22, and pass through when atmosphere monitoring facilities 50's the host computer was worked, the inside sampling air current of major structure 1's sprue blows flabellum 22 is the stirring action to make the fluid that contains the particulate matter of test evenly distributed in the sampling air current. Referring to fig. 1, the bracket 21 is used to suspend the fan blade 22 inside the main body structure 1. When the main machine 50 of the atmosphere monitoring device works, the constant-flow sampling pump works, at this time, a downward (toward the paper filter membrane) sampling airflow with a constant flow rate is generated inside the main structure 1, and the sampling airflow automatically drives the fan blades 22 to perform a stirring action.
It should be noted that, in an embodiment, the fan blade 22 is a passive fan blade, and is passively rotated by the sampling air flow, so that the purpose of the design is to prevent the test particles from generating a downward accelerating falling force due to the rotation of the fan blade 22, and prevent the particles from accelerating to precipitate, i.e. the particles are not blown away and have been previously enriched on the paper filter membrane, so that the test particles are uniformly dispersed on the paper filter membrane as much as possible.
It should be noted that the fan 22 can be rotated, but also can be swung or a combination of swinging and rotating to make the fluid containing the particles for testing uniformly distributed in the sampling air flow, and finally make the particles uniformly spread on the paper filter membrane.
Referring to fig. 1 and 2, the dust collecting device further includes a dust feeding pipe 3, an inlet of the dust feeding pipe 3 is connected to an external dust supply device 200, and an outlet of the dust feeding pipe 3 extends into the main structure 1 and is located below the fan blades 22. It should be noted that, as described above, the external dust supply device 200 is used for putting the particulate matters with known weight M0 meeting the technical requirements into the sampling channel, and under the action of the sampling pump, the particulate matters are enriched onto the paper filter membrane through the sampling channel, and if the dust distribution and distribution device 100 for testing the atmosphere monitoring device is not additionally installed, the added particulate matters cannot be uniformly enriched onto the paper filter membrane, and may be locally enriched on the paper filter membrane in a large amount, and the particulate matters are unevenly distributed on the paper filter membrane, so that on one hand, the device is not beneficial to the smooth operation of the sampling pump, the working resistance of the sampling pump is greatly increased, and in addition, when the weight of the particulate matters is measured through beta rays, the accuracy of measurement is greatly reduced. Therefore, the fan blades 22 are arranged, so that the particulate matters sent out by the dust sending pipeline 3 can be uniformly enriched on the paper filter membrane to the maximum extent, and the weight of the particulate matters can be accurately measured by beta rays.
Referring to fig. 1, the dust feeding pipe 3 is of a flexible structure in the main structure 1. This has the advantage that the dust supply duct 3 can be easily inserted into the main body structure 1 from the outside of the main body structure 1 or extracted from the inside of the main body structure 1. That is, the dust supply pipe 3 can be replaced with a new one without contamination every time a test is performed, thereby preventing cross contamination due to multiple measurements.
In addition, the dust feeding pipeline 3 is located in the main structure 1, and the flexible structure is adopted in the part, so that the fan blades 22 can swing when stirring, and the uniform distribution of particles is facilitated.
Referring to fig. 1, a bearing 23 is further included, and a portion of the dust feeding pipe 3 located in the main body structure 1 passes through an inner ring of the bearing 23 to be connected with the fan blades 22. In this embodiment, the bearing 23 is disposed at the center inside the main body structure 1, so when the dust feeding pipe 3 passes through the inner ring of the bearing 23, it can be ensured that the dust feeding pipe 3 is located at the center inside the main body structure 1, if it is desired that the fan blade 22 can rotate smoothly, the fan blade 22 must also be disposed at the center inside the main body structure 1, and the best design is that the connection between the fan blade 22 and the bracket 21 through the bearing 23 is required to ensure that the fan blade 22 moves smoothly in the circumferential direction without offset in the vertical direction. In this embodiment, the fan 22 rotates to distribute the particles evenly.
Referring to fig. 1, the outlet of the dust feeding pipe 3 is designed to be an inverted trapezoid structure. The reversed trapezoid structure is arranged, the pressure of the fluid which is conveyed out of the dust conveying pipeline 3 and contains the particles for testing can be reduced due to the increase of the volume at the outlet, the downward movement speed of the particles is hopefully reduced, and therefore the particles are more easily blown away and uniformly distributed under the action of the fan blades 22.
In one embodiment, referring to fig. 1 and 2, the invention further provides a testing device of an atmosphere monitoring device, which is used for testing the atmosphere monitoring device, is connected to a host machine of the atmosphere monitoring device, and accurately and uniformly supplies a fluid containing particulate matters for testing to the host machine of the atmosphere monitoring device.
The invention also provides a testing device of the atmosphere monitoring equipment, which is used for connecting to the host of the atmosphere monitoring equipment 50 when testing the atmosphere monitoring equipment 50 and uniformly providing the host of the atmosphere monitoring equipment 50 with the fluid containing the particulate matters for testing. The atmospheric monitoring device 50, especially an online atmospheric monitoring device, needs to be tested before shipment and periodically during service in order to ensure the accuracy of the test data output by the sampling device and prevent the data of the sampling device from being falsified.
Taking an online atmosphere monitoring device as an example, an atmosphere particulate enrichment module is usually disposed inside the device, and specifically, the atmosphere particulate enrichment module is usually a paper filter membrane (hereinafter, the paper filter membrane is exemplarily described). The environment air is sucked into the cutter by the constant current of the sampling pump and is cut into particles meeting the technical requirements, the particles in the environment air are finally enriched on the paper filter membrane through the sampling channel, the existing technology is that the particles enriched on the paper filter membrane are irradiated by beta rays, the strength of the beta rays can be attenuated at the moment, and the weight of the particles can be calculated by measuring the beta rays.
The particulate cutter is accurate given that it has been precisely calibrated before shipment (calibration of the particulate cutter is not within the scope of the present invention's solution). Therefore, when the atmospheric monitoring equipment is calibrated, only the host of the atmospheric monitoring equipment needs to be tested. Before leaving a factory or in the using process of the atmospheric particulate sampling equipment, the reliability, stability and accuracy of the work of the atmospheric particulate sampling equipment need to be tested, and the atmospheric particulate sampling equipment can be placed in a place with the publication number as described in the background technology: 110082270A, application number: 201910439212.2, the name is: the multifunctional linked temperature-equalizing, pressure-equalizing, humidity-equalizing and dust-adding dual-mode gaseous environment simulation system is used for testing.
When a host of an atmospheric monitoring device is used for testing, the current technology generally adjusts the temperature and humidity pressure parameters of the environment where the atmospheric particulate sampling device is located, and in the state of 0 plus dust (i.e. no particulate is added), the weight of the atmospheric particulate matter enriched on a paper filter membrane detected by beta rays is about 0, and the difference is within the error allowable range, so as to test the accuracy of the sampling device. This test is not perfect and has drawbacks. Therefore, in order to compensate for the defects, in the testing process, the particulate matters meeting the technical requirements and having a known weight of M0 are put into the sampling channel, under the action of the sampling pump, the particulate matters are enriched on the paper filter membrane through the sampling channel, the particulate matters enriched on the paper filter membrane are irradiated by beta rays, the intensity of the beta rays is attenuated, the weight of the particulate matters is calculated through the measurement of the beta rays, the M1 is calculated, and the difference between the M0 and the M1 is compared, so that whether the accuracy of the equipment monitored by the atmosphere meets the requirements or not can be determined. Above-mentioned technical scheme, artifical input known weight M0's the particulate matter that accords with technical requirement, then so can meet a great problem, be exactly the particulate matter can not put in the paper filter membrane uniformly, consequently, how to realize throwing in the paper filter membrane uniformly with the particulate matter, become the essential important link of test atmosphere monitoring facilities indispensable, need carry out even dust distribution to atmospheric particulates through even dust distribution device promptly.
The invention also provides a testing device of the atmosphere monitoring equipment, which comprises:
a dust supply 200 for providing a precise weight of particulate matter-containing fluid for testing;
a dust distributing device 100, wherein the dust distributing device 100 is connected with the dust supplying device 200, in particular to the dust conveying pipeline 3.
Specifically, the method includes the following steps as shown in fig. 1:
the main body structure 1 is a hollow structure, and the main body structure 1 is connected to a host of the atmosphere monitoring equipment 50; specifically, the main body structure 1 is a tubular structure, which can be hermetically connected to the upper end (sampling channel) of the sampling channel of the main body of the atmosphere monitoring device 50, and can uniformly supply dust to the main body of the atmosphere monitoring device 50 instead of a particulate cutter.
In the present invention, "dust" means particulate matter and is supplied in the form of a fluid containing the particulate matter.
In a preferred embodiment, the main body structure 1 has an outer shape conforming to the size of the sampling channel of the main body of the atmosphere monitoring device 50, and preferably is threadably connected to the sampling channel to achieve a sealed and smooth transition connection with the sampling channel, so as not to cause additional resistance to the flow of the fluid containing particles.
A dust dispersing and distributing mechanism 2, the dust dispersing and distributing mechanism 2 is arranged inside the main body structure 1, which comprises
Support 21 and flabellum 22, support 21 is fixed in 1 inner wall department of major structure, flabellum 22 connect in rotatoryly on the support 21, the fluid that contains the particulate matter for the test send to the below department of flabellum 22, and pass through when atmospheric monitoring equipment 50's host computer work, the inside sampling air current of major channel of major structure 1 blows flabellum 22 is the stirring action to make the fluid that contains the particulate matter for the test evenly distributed in the sampling air current. Referring to fig. 1, the bracket 21 is used to suspend the fan blade 22 inside the main body structure 1. When the main machine 50 of the atmosphere monitoring device works, the constant-flow sampling pump works, at this time, a downward (toward the paper filter membrane) sampling airflow with a constant flow rate is generated inside the main structure 1, and the sampling airflow automatically drives the fan blades 22 to perform a stirring action.
It should be noted that, in an embodiment, the fan blade 22 is a passive fan blade, and is passively rotated by the sampling air flow, so that the purpose of the design is to prevent the test particles from generating a downward accelerating falling force due to the rotation of the fan blade 22, and prevent the particles from accelerating to precipitate, i.e. the particles are not blown away and have been previously enriched on the paper filter membrane, so that the test particles are uniformly dispersed on the paper filter membrane as much as possible.
It should be noted that the fan 22 can be rotated, but also can be swung or a combination of swinging and rotating to make the fluid containing the particles for testing uniformly distributed in the sampling air flow, and finally make the particles uniformly spread on the paper filter membrane.
Referring to fig. 1 and 2, the dust collecting device further includes a dust feeding pipe 3, an inlet of the dust feeding pipe 3 is connected to an external dust supply device 200, and an outlet of the dust feeding pipe 3 extends into the main structure 1 and is located below the fan blades 22. It should be noted that, as described above, the external dust supply device 200 is used for putting the particulate matters with known weight M0 meeting the technical requirements into the sampling channel, and under the action of the sampling pump, the particulate matters are enriched onto the paper filter membrane through the sampling channel, and if the dust distribution and distribution device 100 for testing the atmosphere monitoring device is not additionally installed, the added particulate matters cannot be uniformly enriched onto the paper filter membrane, and may be locally enriched on the paper filter membrane in a large amount, and the particulate matters are unevenly distributed on the paper filter membrane, so that on one hand, the device is not beneficial to the smooth operation of the sampling pump, the working resistance of the sampling pump is greatly increased, and in addition, when the weight of the particulate matters is measured through beta rays, the accuracy of measurement is greatly reduced. Therefore, the fan blades 22 are arranged, so that the particulate matters sent out by the dust sending pipeline 3 can be uniformly enriched on the paper filter membrane to the maximum extent, and the weight of the particulate matters can be accurately measured by beta rays.
Referring to fig. 1, the dust feeding pipe 3 is of a flexible structure in the main structure 1. This has the advantage that the dust supply duct 3 can be easily inserted into the main body structure 1 from the outside of the main body structure 1 or extracted from the inside of the main body structure 1. That is, the dust supply pipe 3 can be replaced with a new one without contamination every time a test is performed, thereby preventing cross contamination due to multiple measurements.
Referring to fig. 1, a bearing 23 is further included, and a portion of the dust feeding pipe 3 located in the main body structure 1 passes through an inner ring of the bearing 23 to be connected with the fan blades 22. In this embodiment, the bearing 23 is disposed at the center inside the main body structure 1, so when the dust feeding pipe 3 passes through the inner ring of the bearing 23, it can be ensured that the dust feeding pipe 3 is located at the center inside the main body structure 1, if it is desired that the fan blade 22 can rotate smoothly, the fan blade 22 must also be disposed at the center inside the main body structure 1, and the best design is that the connection between the fan blade 22 and the bracket 21 through the bearing 23 is required to ensure that the fan blade 22 moves smoothly in the circumferential direction without offset in the vertical direction.
Referring to fig. 1, the outlet of the dust feeding pipe 3 is designed to be an inverted trapezoid structure. The reversed trapezoid structure is arranged, the pressure of the fluid which is conveyed out of the dust conveying pipeline 3 and contains the particles for testing can be reduced due to the increase of the volume at the outlet, the downward movement speed of the particles is hopefully reduced, and therefore the particles are more easily blown away and uniformly distributed under the action of the fan blades 22.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a dispersion cloth dirt device that test atmosphere monitoring facilities used for when testing atmosphere monitoring facilities, connect on atmosphere monitoring facilities's host computer, evenly provide the fluid that contains the particulate matter of test usefulness for atmosphere monitoring facilities's host computer, its characterized in that includes:
the main body structure is a hollow structure and is connected to a host of the atmosphere monitoring equipment;
the dust distribution mechanism is arranged inside a main flow channel of the main structure and comprises a support and fan blades, the support is fixed in the main structure, the fan blades are connected to the support, the fluid containing the particulate matters for testing is conveyed to the position below the fan blades and passes through the main machine of the atmosphere monitoring equipment during working, the sampling air flow inside the main flow channel of the main structure blows the fan blades to perform stirring action, and the fluid containing the particulate matters for testing is uniformly distributed in the sampling air flow.
2. The dust dispersing and distributing device for the test atmosphere monitoring equipment according to claim 1, further comprising a dust feeding pipe, wherein an inlet of the dust feeding pipe is connected with an external dust supply device, and an outlet of the dust feeding pipe extends into the main structure and is positioned below the fan blades.
3. The dust dispersing and distributing device for testing atmosphere monitoring equipment according to claim 1, wherein the part of the dust feeding pipeline located in the main body structure is of a flexible structure.
4. The dust dispersing and distributing device for testing atmosphere monitoring equipment according to claim 1, further comprising a bearing, wherein the part of the dust feeding pipeline located in the main body structure penetrates through the inner ring of the bearing to be connected with the fan blades.
5. The dust dispersing and distributing device for testing atmosphere monitoring equipment according to claim 1, wherein the outlet of the dust feeding pipe is designed to be an inverted trapezoid structure.
6. The utility model provides a testing arrangement of atmosphere monitoring facilities for test atmosphere monitoring facilities, connect on atmosphere monitoring facilities's host computer, accurately, evenly provide the fluid that contains the particulate matter of test usefulness for atmosphere monitoring facilities's host computer, its characterized in that includes:
a dust supply device for providing a precise weight of a particulate matter-containing fluid for testing;
a distributed dust device connected to the dust supply device, comprising:
the main body structure is a hollow structure and is connected to a host of the atmosphere monitoring equipment;
the dust distribution mechanism is arranged inside a main flow channel of the main structure and comprises a support and fan blades, the support is fixed in the main structure, the fan blades are connected to the support, the fluid containing the particulate matters for testing is conveyed to the position below the fan blades and passes through the main machine of the atmosphere monitoring equipment during working, the sampling air flow inside the main flow channel of the main structure blows the fan blades to perform stirring action, and the fluid containing the particulate matters for testing is uniformly distributed in the sampling air flow.
7. The atmospheric monitoring device testing device of claim 6, further comprising a dust feeding pipe, wherein an inlet of the dust feeding pipe is connected with an external dust supply device, and an outlet of the dust feeding pipe extends into the main body structure and is located below the fan blades.
8. The atmospheric monitoring device test apparatus of claim 6, wherein the portion of the dust supply duct located within the main body structure is also suspended at an inner wall of the dust supply duct by a bracket.
9. The atmospheric monitoring equipment testing device of claim 6, further comprising a bearing, wherein a portion of the dust feeding pipeline located in the main body structure penetrates through the bearing inner ring to be connected with the fan blades.
10. The atmospheric monitoring device test device of claim 6, wherein the dust feeding pipeline has an inverted trapezoid outlet.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405867A (en) * | 2021-07-26 | 2021-09-17 | 天津环科环境规划科技发展有限公司 | Particulate matter sampling device and particulate matter detection device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61249532A (en) * | 1985-04-27 | 1986-11-06 | Konishiroku Photo Ind Co Ltd | Dispersing method for powdery granular particles |
| CN201867327U (en) * | 2010-03-31 | 2011-06-15 | 范维林 | Rotating disk type dust aerosol generating device |
| GB201308556D0 (en) * | 2013-05-13 | 2013-06-19 | Crowcon Detection Instr Ltd | Gas detector assembly |
| CN205308160U (en) * | 2015-12-05 | 2016-06-15 | 重庆百齐居建材有限公司 | Pump sending formula dispenser |
| CN105664744A (en) * | 2016-03-29 | 2016-06-15 | 江苏大学 | Particle dispenser for dispensing fine solid particles into airflow |
| CN106018154A (en) * | 2016-07-16 | 2016-10-12 | 河南省计量科学研究院 | Atmospheric particulate matter monitoring device |
| CN106442274A (en) * | 2016-08-31 | 2017-02-22 | 同济大学建筑设计研究院(集团)有限公司 | Testing device and testing method for determining absolute dust generating quantity of equipment |
| CN106855490A (en) * | 2016-11-16 | 2017-06-16 | 东莞市宇洁新材料有限公司 | Method for generation, device of the air clearing product performance test with dirt source and the dirt source |
| CN108152178A (en) * | 2016-12-05 | 2018-06-12 | 天津普瑞爱尔科技有限公司 | β rays sensor for particulate matter concentration detection and its detection method |
| CN208229680U (en) * | 2018-04-02 | 2018-12-14 | 昆山清旭环境科技有限公司 | A kind of generating device for simulating dusty gas |
| CN211148193U (en) * | 2019-09-11 | 2020-07-31 | 深圳国技仪器有限公司 | Dust distributing and distributing device for testing atmosphere monitoring equipment and testing device |
-
2019
- 2019-09-11 CN CN201910859613.3A patent/CN110595846B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61249532A (en) * | 1985-04-27 | 1986-11-06 | Konishiroku Photo Ind Co Ltd | Dispersing method for powdery granular particles |
| CN201867327U (en) * | 2010-03-31 | 2011-06-15 | 范维林 | Rotating disk type dust aerosol generating device |
| GB201308556D0 (en) * | 2013-05-13 | 2013-06-19 | Crowcon Detection Instr Ltd | Gas detector assembly |
| CN205308160U (en) * | 2015-12-05 | 2016-06-15 | 重庆百齐居建材有限公司 | Pump sending formula dispenser |
| CN105664744A (en) * | 2016-03-29 | 2016-06-15 | 江苏大学 | Particle dispenser for dispensing fine solid particles into airflow |
| CN106018154A (en) * | 2016-07-16 | 2016-10-12 | 河南省计量科学研究院 | Atmospheric particulate matter monitoring device |
| CN106442274A (en) * | 2016-08-31 | 2017-02-22 | 同济大学建筑设计研究院(集团)有限公司 | Testing device and testing method for determining absolute dust generating quantity of equipment |
| CN106855490A (en) * | 2016-11-16 | 2017-06-16 | 东莞市宇洁新材料有限公司 | Method for generation, device of the air clearing product performance test with dirt source and the dirt source |
| CN108152178A (en) * | 2016-12-05 | 2018-06-12 | 天津普瑞爱尔科技有限公司 | β rays sensor for particulate matter concentration detection and its detection method |
| CN208229680U (en) * | 2018-04-02 | 2018-12-14 | 昆山清旭环境科技有限公司 | A kind of generating device for simulating dusty gas |
| CN211148193U (en) * | 2019-09-11 | 2020-07-31 | 深圳国技仪器有限公司 | Dust distributing and distributing device for testing atmosphere monitoring equipment and testing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113405867A (en) * | 2021-07-26 | 2021-09-17 | 天津环科环境规划科技发展有限公司 | Particulate matter sampling device and particulate matter detection device |
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