CN205483934U - Particulate matter measuring apparatu calibration system - Google Patents

Particulate matter measuring apparatu calibration system Download PDF

Info

Publication number
CN205483934U
CN205483934U CN201620098180.6U CN201620098180U CN205483934U CN 205483934 U CN205483934 U CN 205483934U CN 201620098180 U CN201620098180 U CN 201620098180U CN 205483934 U CN205483934 U CN 205483934U
Authority
CN
China
Prior art keywords
dust
sampling
particulate matter
feed
measuring instrument
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.)
Expired - Fee Related
Application number
CN201620098180.6U
Other languages
Chinese (zh)
Inventor
樊玮
崔耀华
邹晓华
师恩洁
邹君臣
李建鹏
孙彦楷
陈睿锋
暴冰
周新刚
何力人
周文辉
张家铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Institute of Metrology
Original Assignee
Henan Institute of Metrology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henan Institute of Metrology filed Critical Henan Institute of Metrology
Priority to CN201620098180.6U priority Critical patent/CN205483934U/en
Application granted granted Critical
Publication of CN205483934U publication Critical patent/CN205483934U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model belongs to the technical field of dust detection. A particulate matter measuring apparatu calibration system, is including the compressed air processing apparatus, dust generator and the homogeneous mixing case that communicate in proper order, homogeneous mixing case lower part intercommunication have dust sample collector and dust collector, the homogeneous mixing case and bag draw together and subside mixing chamber, mixing section and the sampling section of emptyying, the mixing section include dust inlet pipe, blender and go up the transitional cavity, dust inlet pipe and blender between form the dilution air storehouse, the equipartition intercommunication is provided with a plurality of compressed air air inlets on the dust inlet pipe that the dilution air storehouse corresponds, evenly offers omnidirectional dilution air's mixed through -hole on the pipe wall of blender. The utility model discloses the homogeneity that makes dust emergence volume, dilution air flow, dust diluted concentration, sampling flow and dust and dilution air mix has all obtained effectual control to can realize the demarcation of the measuring apparatu of different dust concentration by mass within ranges.

Description

Particulate matter measuring instrument calibration system
Technical field
This utility model belongs to dust detection technique field, is specifically related to a kind of particulate matter measuring instrument calibration system.
Background technology
Particulate matter measuring instrument is widely used to the particle concentration monitoring of the occasions such as quality of air environment, Work places, the vehicles.Its name is not quite similar by different manufacturers, such as particulate matter measuring instrument, pellet measuring instrument, optical scatter substrate concentration measuring instrument, air particle concentration monitor, Atmospheric particulates in-line analyzer, laser particle size analyzer etc..On the whole, these instruments can be collectively referred to as particulate matter measuring instrument, and particulate matter measuring instrument has β ray principle, light scattering principle, microseism to swing balance principle etc.;Quality Control Technology, calibrating installation used before dispatching from the factory due to the particulate matter measuring instrument of different principle are different, cause calibration result to vary, and use to user and bring greatly inconvenience.Therefore, particulate matter measuring instrument must use unified calibration steps periodically to calibrate.At present, not yet inquire the calibrating installation of relevant particles thing measuring instrument, for above present situation, various places quality supervision department is highly desirable to set up the calibrating installation of particulate matter measuring instrument and scaling method specification, in order to examine and determine the particulate matter measuring instrument of different manufacturers and different user, so that the calibrating standardization of particulate matter measuring instrument.
Utility model content
The purpose of this utility model is the problem and shortage for above-mentioned existence, a kind of particulate matter measuring instrument calibration system is provided, it can not only provide the uniform dusty gas of mass concentration for whole calibration system, ensure particulate matter detector value accuracy, and can promote that various places quality supervision department sets up particulate matter detector calibration system, provide technical service for environmental monitoring.
For reaching above-mentioned purpose, adopted the technical scheme that:
A kind of particulate matter measuring instrument calibration system, including the compressed air treatment device being sequentially communicated, dust generator, heater, electrostatic charge neutralization, standard cutting head and uniformly blending bin, described uniform blending bin bottom is communicated with powder sample catcher and dust arrester;Described uniform blending bin includes columned sedimentation mixing chamber, is arranged on the sedimentation mixing section on mixing chamber top and is arranged on the sampling emptying section of sedimentation mixing chamber bottom, and described mixing section includes columned dust feed pipe, is arranged in dust feed pipe the blender in hyperboloid of one sheet structure and the hemispherical upper transitional cavity being arranged between dust feed pipe and sedimentation mixing chamber;The upper and lower side of described blender all mates sealing laminating with dust feed pipe inwall, diluent air storehouse is formed between described dust feed pipe and blender, uniform on the dust feed pipe corresponding with diluent air storehouse it is provided with and communicated with multiple compressed air inlet port, the tube wall of blender uniformly offers the mixing through hole of omnidirectional diluent air.
Described powder sample catcher includes the isokinetic sampling's head in bell mouth shape, branch chamber, connection isokinetic sampling's head and the sampling tube of branch chamber, is arranged on the test sample identical with around uniform three apertures being arranged on bottom branch chamber of baffle of the cone shape baffle bottom branch chamber and collects outlet, three test samples are collected outlet and are connected the first filter membrane, the second filter membrane respectively and be calibrated instrument, and the first filter membrane and the second filter membrane have been simultaneously connected with sampling apparatus.
Described powder sample catcher includes three the isokinetic sampling's heads being circumferentially distributed around the axis of sedimentation mixing chamber and connects the sampling tube being arranged on three isokinetic sampling's head bottoms, three sampling tubes connect the first filter membrane, the second filter membrane respectively and are calibrated instrument, and the first filter membrane and the second filter membrane have been simultaneously connected with sampling apparatus.
Described sampling emptying section includes in hemispherical lower transitional cavity and is arranged on the exhaust emission tube road bottom lower transitional cavity, described dust arrester is the aspiration of negative pressure device connected with exhaust emission tube road, the material of described uniform blending bin is rustless steel, uniformly the internal face of blending bin is all through process of scraping, its surface roughness is less than 0.0025mm, and each sectionally smooth join position of uniformly blending bin seamlessly transits, without dead angle.
Described dust generator includes on housing, circular feed steel ring, the actuating unit driving feed steel ring to rotate and feed steel ring along the feed shower nozzle being correspondingly arranged and Venturi tube, the inlet end of described Venturi tube connects with compressed air treatment device and uniform blending bin respectively with outlet side, and the suction end of Venturi tube is corresponding with edge on feed steel ring.
Described actuating unit includes two the arranged driving motors that actively guide wheel and a driven guide wheel and driving two active guide wheels rotate in triangle, the guide groove corresponding with actively guide wheel and driven guide wheel it is provided with on described feed steel ring, connect bottom the rotating shaft of described driven guide wheel and have swing arm, pivot joint between the described swing arm other end and housing, and on drive-connecting shaft, it is arranged with torsion spring.
Described housing upper is also detained and is provided with constant temperature cover, described feed steel ring, feed shower nozzle and Venturi tube be located in constant temperature cover, it is provided with electrostatic rod on the housing that the middle part of described feed steel ring is corresponding, described lower housing portion is provided with the material storing box connected with feed jet pipe, and on the outer wall of described material storing box, circumference is laid with Resistant heating assembly.
It is provided with along middle part on feed steel ring along indentation on described feed steel ring or described and ring-type breaks up tooth.
Described compressed air treatment device includes air compressor, cooling driers, tertiary filter and surge tank.
Use technique scheme, acquired provide the benefit that:
This utility model is by being designed the structure of dust generator, dilution and the metering of effective bug dust concentration is carried out by Venturi tube principle, by gas flow, the control of dust emitted dose such that it is able to further increase the effective control to bug dust concentration;nullThis utility model is by being designed the structure of uniform blending bin,Make dusty gas after entering uniform blending bin,Under dual function by the diluent air in the blender of hyperboloid of one sheet structure and diluent air storehouse,The two convection current is made to aggravate and be formed unoriented mixing collision,Thus just can complete sufficiently to mix in limited scope,Reduce the size of uniform blending bin,And well-mixed purpose can be reached,Thus provide the uniform dust of mass concentration for whole calibration system,Make in the sampling calibration process in whole later stage,It is capable of the first filter membrane、Second filter membrane、It is calibrated mass concentration uniformity and the stability of instrument,Thus reduce measurement error to greatest extent,Ensure that particulate matter detector value is accurate,Promote that various places quality supervision department sets up particulate matter detector calibration system,Technical service is provided for environmental monitoring.
Accompanying drawing explanation
Fig. 1 is one of structural representation of this utility model particulate matter measuring instrument calibration system.
Fig. 2 is one of structural representation of uniform blending bin.
Fig. 3 is the two of the structural representation of uniform blending bin.
Fig. 4 is the structural representation of dust generator.
Fig. 5 is the drive mechanism schematic diagram of feed steel ring and actuating unit.
Fig. 6 is one of structural representation of feed steel ring.
Fig. 7 is the two of the structural representation of feed steel ring.
nullSequence number in figure: 1 is air compressor、2 is cooling driers、3 is tertiary filter、4 is surge tank、5 is dust generator、6 is uniform blending bin、7 is dust arrester、8 is sedimentation mixing chamber、9 is dust feed pipe、10 is blender、11 is upper transitional cavity、12 is diluent air storehouse、13 is compressed air inlet port、14 is mixing through hole、15 is isokinetic sampling's head、16 is sampling tube、17 is branch chamber、18 is baffle、19 collect outlet for test sample、20 is the first filter membrane、21 is the second filter membrane、22 for being calibrated instrument、23 is sampling apparatus、24 is lower transitional cavity、25 is exhaust emission tube road、26 is housing、27 is feed steel ring、28 is feed shower nozzle、29 is Venturi tube、30 is active guide wheel、31 is driven guide wheel、32 is guide groove、33 is swing arm、34 is heater、35 is electrostatic charge neutralization、36 is PM10 standard cutting head、37 is PM2.5 standard cutting head、38 is constant temperature cover、39 is electrostatic rod、40 is Resistant heating assembly、41 for breaing up tooth、42 is material storing box.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is elaborated.
Embodiment one: see Fig. 1, Fig. 2, Fig. 4 Fig. 7, a kind of particulate matter measuring instrument calibration system, including the compressed air treatment device being sequentially communicated, dust generator 5, heater 34, electrostatic charge neutralization 35, PM10 standard cutting head 36, PM2.5 standard cutting head 37 and uniformly blending bin 6, described compressed air treatment device includes that air compressor 1, cooling driers 2, tertiary filter 3 and surge tank 4, described uniform blending bin 6 bottom are communicated with powder sample catcher and dust arrester 7;Described uniform blending bin 6 includes columned sedimentation mixing chamber 8, is arranged on the sedimentation mixing section on mixing chamber 8 top and is arranged on the sampling emptying section of sedimentation mixing chamber bottom, and described mixing section includes columned dust feed pipe 9, is arranged in dust feed pipe the blender 10 in hyperboloid of one sheet structure and the hemispherical upper transitional cavity 11 being arranged between dust feed pipe 9 and sedimentation mixing chamber 8;The upper and lower side of described blender 10 all mates sealing laminating with dust feed pipe 9 inwall, diluent air storehouse 12 is formed between described dust feed pipe 9 and blender 10, uniform on the dust feed pipe 9 corresponding with diluent air storehouse 12 it is provided with and communicated with multiple compressed air inlet port 13, the tube wall of blender uniformly offers the mixing through hole 14 of omnidirectional diluent air;nullDescribed sampling emptying section includes in hemispherical lower transitional cavity 24 and is arranged on the exhaust emission tube road 25 bottom lower transitional cavity,Described powder sample catcher includes the isokinetic sampling 15 in bell mouth shape、Branch chamber 17、Connection isokinetic sampling 15 and the sampling tube 16 of branch chamber 17、It is arranged on the cone shape baffle 18 bottom branch chamber、The test sample identical with around uniform three apertures being arranged on bottom branch chamber of baffle 18 collects outlet 19,Three test samples are collected outlet 19 and are connected the first filter membrane 20 respectively、Second filter membrane 21 and be calibrated instrument 22,First filter membrane 20 and the second filter membrane 21 have been simultaneously connected with sampling apparatus 23,Wherein the first filter membrane 20 and the second filter membrane 21 are the teflon membrane filter of 47mm,Sampling apparatus 23 is two-way adjustable gas effusion meter.
Described dust arrester 7 is the aspiration of negative pressure device connected with exhaust emission tube road, the material of described uniform blending bin is rustless steel, uniformly the internal face of blending bin is all through process of scraping, its surface roughness is less than 0.0025mm, and each sectionally smooth join position of uniformly blending bin seamlessly transits, without dead angle, avoid the adsorption of dust granule of uniform blending bin inwall, also make the gas flowfield in whole uniform blending bin definitely, have rule to follow, the convenient sampling implemented dusty gas.
Described dust generator includes on housing 26, circular feed steel ring 27, the actuating unit driving feed steel ring to rotate and feed steel ring along the feed shower nozzle 28 being correspondingly arranged and Venturi tube 29, the inlet end of described Venturi tube 29 connects with compressed air treatment device and uniform blending bin 6 respectively with outlet side, the suction end of Venturi tube 29 is corresponding with edge on feed steel ring 27, it is provided with along middle part on feed steel ring 27 along indentation on described feed steel ring 27 or described and ring-type breaks up tooth 41;So that dust generator feeding process is avoided the reuniting effect caused because of electrostatic, build isoperibol for dust generator simultaneously, and then also detain on described housing 26 top and to be provided with constant temperature cover 38, described feed steel ring 27, feed shower nozzle 28 and Venturi tube 29 be located in constant temperature cover 38, it is provided with electrostatic rod 39 on the housing that the middle part of described feed steel ring 27 is corresponding, described lower housing portion is provided with the material storing box 42 connected with feed jet pipe, it is provided with in material storing box 42 and can persistently ensure that dust presents the scraper plate of flow regime, on the outer wall of described material storing box, circumference is laid with Resistant heating assembly 40.
Wherein, described actuating unit includes two the arranged driving motors that actively guide wheel 30 and a driven guide wheel 31 and driving two active guide wheels 30 rotate in triangle, the guide groove 32 corresponding with actively guide wheel 30 and driven guide wheel 31 it is provided with on described feed steel ring 27, connect bottom the rotating shaft of described driven guide wheel and have swing arm 33, pivot joint between described swing arm 33 other end and housing 26, and on drive-connecting shaft, it is arranged with torsion spring.
Embodiment two: see Fig. 1, Fig. 3 Fig. 7, the structure of the present embodiment is essentially identical with embodiment one, something in common no longer repeats, its difference is: described powder sample catcher includes three isokinetic samplings 15 being circumferentially distributed around the axis of sedimentation mixing chamber 8 and connects the sampling tube 16 being arranged on three isokinetic sampling 15 bottoms, three sampling tubes 16 connect first filter membrane the 20, second filter membrane 21 respectively and are calibrated instrument 22, and the first filter membrane 20 and the second filter membrane 21 have been simultaneously connected with sampling apparatus 23.
The scaling method utilizing the particulate matter measuring instrument calibration system described in embodiment one or embodiment two is: after clean compressed air is passed through dust generator, through dust generator produce powder sample by preventing Electrostatic Treatment after, sequentially enter standard cutting head and uniform blending bin, mix homogeneously with compressed air in uniform blending bin, isokinetic sampling's head the powder sample gathering out respectively enters the first filter membrane, the second filter membrane sampler and is calibrated instrument;The flow of sampling apparatus is adjusted to identical with the flow being calibrated instrument, under identical acquisition time, reads the reading being calibrated instrument;Meanwhile, utilize high accuracy balance that two filter membranes are weighed;Calculate quality and the ratio of sampling volume that two filter membranes weigh, obtain two bug dust concentrations, take its meansigma methods as standard value, by comparing measuring method, try to achieve the particulate matter measuring instrument concentration error of indication.
This utility model is by being designed the structure of dust generator, dilution and the metering of effective bug dust concentration is carried out by Venturi tube principle, by gas flow, the control of dust emitted dose such that it is able to further increase the effective control to bug dust concentration;nullThis utility model is by being designed the structure of uniform blending bin,Make dusty gas after entering uniform blending bin,Under dual function by the diluent air in the blender of hyperboloid of one sheet structure and diluent air storehouse,The two convection current is made to aggravate and be formed unoriented mixing collision,Thus just can complete sufficiently to mix in limited scope,Reduce the size of uniform blending bin,And well-mixed purpose can be reached,Thus provide the uniform dust of mass concentration for whole calibration system,Make in the sampling calibration process in whole later stage,It is capable of the first filter membrane、Second filter membrane、It is calibrated mass concentration uniformity and the stability of instrument,Thus reduce measurement error to greatest extent,Ensure that particulate matter detector value is accurate,Promote that various places quality supervision department sets up particulate matter detector calibration system,Technical service is provided for environmental monitoring.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; simply principle of the present utility model described in above-described embodiment and description; on the premise of without departing from this utility model spirit and scope, this utility model also has various changes and modifications, and these changes and improvements both fall within the range of claimed this utility model.The protection domain that this utility model requires is defined by appending claims and equivalent thereof.

Claims (9)

1. a particulate matter measuring instrument calibration system, including the compressed air treatment device being sequentially communicated, dust generator, heater, electrostatic charge neutralization, standard cutting head and uniformly blending bin, described uniform blending bin bottom is communicated with powder sample catcher and dust arrester;
It is characterized in that: described uniform blending bin includes columned sedimentation mixing chamber, is arranged on the sedimentation mixing section on mixing chamber top and is arranged on the sampling emptying section of sedimentation mixing chamber bottom, described mixing section includes columned dust feed pipe, is arranged in dust feed pipe the blender in hyperboloid of one sheet structure and the hemispherical upper transitional cavity being arranged between dust feed pipe and sedimentation mixing chamber;
The upper and lower side of described blender all mates sealing laminating with dust feed pipe inwall, diluent air storehouse is formed between described dust feed pipe and blender, uniform on the dust feed pipe corresponding with diluent air storehouse it is provided with and communicated with multiple compressed air inlet port, the tube wall of blender uniformly offers the mixing through hole of omnidirectional diluent air.
Particulate matter measuring instrument calibration system the most according to claim 1, it is characterized in that: described powder sample catcher includes the isokinetic sampling's head in bell mouth shape, branch chamber, connection isokinetic sampling's head and the sampling tube of branch chamber, is arranged on the test sample identical with around uniform three apertures being arranged on bottom branch chamber of baffle of the cone shape baffle bottom branch chamber and collects outlet, three test samples are collected outlet and are connected the first filter membrane, the second filter membrane respectively and be calibrated instrument, and the first filter membrane and the second filter membrane have been simultaneously connected with sampling apparatus.
Particulate matter measuring instrument calibration system the most according to claim 1, it is characterized in that: described powder sample catcher includes three the isokinetic sampling's heads being circumferentially distributed around the axis of sedimentation mixing chamber and connects the sampling tube being arranged on three isokinetic sampling's head bottoms, three sampling tubes connect the first filter membrane, the second filter membrane respectively and are calibrated instrument, and the first filter membrane and the second filter membrane have been simultaneously connected with sampling apparatus.
Particulate matter measuring instrument calibration system the most according to claim 1, it is characterized in that: described sampling emptying section includes in hemispherical lower transitional cavity and is arranged on the exhaust emission tube road bottom lower transitional cavity, described dust arrester is the aspiration of negative pressure device connected with exhaust emission tube road, the material of described uniform blending bin is rustless steel, uniformly the internal face of blending bin is all through process of scraping, its surface roughness is less than 0.0025mm, and each sectionally smooth join position of uniformly blending bin seamlessly transits, without dead angle.
Particulate matter measuring instrument calibration system the most according to claim 1, it is characterized in that: described dust generator includes on housing, circular feed steel ring, the actuating unit driving feed steel ring to rotate and feed steel ring along the feed shower nozzle being correspondingly arranged and Venturi tube, the inlet end of described Venturi tube connects with compressed air treatment device and uniform blending bin respectively with outlet side, and the suction end of Venturi tube is corresponding with edge on feed steel ring.
Particulate matter measuring instrument calibration system the most according to claim 5, it is characterized in that: described actuating unit includes two the arranged driving motors that actively guide wheel and a driven guide wheel and driving two active guide wheels rotate in triangle, the guide groove corresponding with actively guide wheel and driven guide wheel it is provided with on described feed steel ring, connect bottom the rotating shaft of described driven guide wheel and have swing arm, pivot joint between the described swing arm other end and housing, and on drive-connecting shaft, it is arranged with torsion spring.
Particulate matter measuring instrument calibration system the most according to claim 5, it is characterized in that: described housing upper is also detained and is provided with constant temperature cover, described feed steel ring, feed shower nozzle and Venturi tube be located in constant temperature cover, it is provided with electrostatic rod on the housing that the middle part of described feed steel ring is corresponding, described lower housing portion is provided with the material storing box connected with feed jet pipe, and on the outer wall of described material storing box, circumference is laid with Resistant heating assembly.
Particulate matter measuring instrument calibration system the most according to claim 5, it is characterised in that: it is provided with along middle part on feed steel ring along indentation on described feed steel ring or described and ring-type breaks up tooth.
Particulate matter measuring instrument calibration system the most according to claim 5, it is characterised in that: described compressed air treatment device includes air compressor, cooling driers, tertiary filter and surge tank.
CN201620098180.6U 2016-02-01 2016-02-01 Particulate matter measuring apparatu calibration system Expired - Fee Related CN205483934U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620098180.6U CN205483934U (en) 2016-02-01 2016-02-01 Particulate matter measuring apparatu calibration system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620098180.6U CN205483934U (en) 2016-02-01 2016-02-01 Particulate matter measuring apparatu calibration system

Publications (1)

Publication Number Publication Date
CN205483934U true CN205483934U (en) 2016-08-17

Family

ID=56672935

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620098180.6U Expired - Fee Related CN205483934U (en) 2016-02-01 2016-02-01 Particulate matter measuring apparatu calibration system

Country Status (1)

Country Link
CN (1) CN205483934U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486619A (en) * 2016-02-01 2016-04-13 河南省计量科学研究院 System for calibrating particulate matter measuring instruments and calibrating method of system
CN106769728A (en) * 2016-12-28 2017-05-31 中国计量科学研究院 PM2.5 quality and concentration monitor calibrating installations
CN107860692A (en) * 2017-11-01 2018-03-30 缪荣明 Dust concentration caliberating device and scaling method in dust work environment
CN107179289B (en) * 2017-04-28 2018-05-11 河南省计量科学研究院 Uncertainty analysis method based on gas concentration lwevel in infrared spectroscopic determination industrial smoke
CN109406329A (en) * 2017-08-17 2019-03-01 中国石油化工股份有限公司 Measure the suspension method of fluid-bed heat exchanger tubulation endoparticle distribution
CN109675490A (en) * 2019-01-24 2019-04-26 苏州翰霖汽车科技有限公司 Dust occurrence of equipment and its control method
CN109900609A (en) * 2019-03-14 2019-06-18 北京理工大学 A kind of wide range dust concentration detector calibration system and scaling method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486619A (en) * 2016-02-01 2016-04-13 河南省计量科学研究院 System for calibrating particulate matter measuring instruments and calibrating method of system
CN106769728A (en) * 2016-12-28 2017-05-31 中国计量科学研究院 PM2.5 quality and concentration monitor calibrating installations
CN107179289B (en) * 2017-04-28 2018-05-11 河南省计量科学研究院 Uncertainty analysis method based on gas concentration lwevel in infrared spectroscopic determination industrial smoke
CN109406329B (en) * 2017-08-17 2021-08-03 中国石油化工股份有限公司 Suspension method for measuring particle distribution in tube of fluidized bed heat exchanger
CN109406329A (en) * 2017-08-17 2019-03-01 中国石油化工股份有限公司 Measure the suspension method of fluid-bed heat exchanger tubulation endoparticle distribution
CN107860692B (en) * 2017-11-01 2020-03-24 缪荣明 Dust concentration calibration device and calibration method in dust operation environment
CN107860692A (en) * 2017-11-01 2018-03-30 缪荣明 Dust concentration caliberating device and scaling method in dust work environment
CN109675490A (en) * 2019-01-24 2019-04-26 苏州翰霖汽车科技有限公司 Dust occurrence of equipment and its control method
CN109900609A (en) * 2019-03-14 2019-06-18 北京理工大学 A kind of wide range dust concentration detector calibration system and scaling method

Similar Documents

Publication Publication Date Title
CN205483934U (en) Particulate matter measuring apparatu calibration system
CN105486619B (en) Particulate matter measuring instrument calibration system and its scaling method
US6431014B1 (en) High accuracy aerosol impactor and monitor
CN103048249B (en) Particulate monitor
CN100395533C (en) Diluting and sampling system for particle from fixed combustion source emission
Hinz et al. A comprehensive experimental study of aerial pollutants in and emissions from livestock buildings. Part 1: Methods
CN103091134A (en) Dilution sampling system and sampling method of fixed source particles and volatile organic compounds
CN204422376U (en) A kind of novel low-concentration flue gas detection system of particles
CN104075913A (en) Dilution sampling device for PM2.5 discharged by stationary pollution source
CN104251809B (en) Minute solid particles aerosol high accuracy steady caliberating device
US7610793B2 (en) Residence time chamber and sampling apparatus
CN105043954B (en) The calibration system and its scaling method of digital dust instrument
CN107192648B (en) Method and system for measuring uncertainty of D50 of PM2.5 cutter
CN105067495A (en) Filtration efficiency calibration system for air filtration equipment
CN105987868B (en) A kind of low-concentration flue gas detection system of particles
CN204924866U (en) Calibration system of digit dust appearance
CN204086080U (en) Minute solid particles gasoloid high precision steady caliberating device
CN204461840U (en) A kind of PM2.5 source resolution sampling apparatus controlled based on gas concentration lwevel
CN204694486U (en) Heavy duty detergent air conditioning filter performance detecting system
CN204649518U (en) A kind of dynamically aerosol diluter
CN209167069U (en) Air filter performance testing device
CN207036619U (en) A kind of grain graininess on-line measurement system
CN207717129U (en) A kind of flue dust gas sampling comprehensive detection system
CN105806755B (en) A kind of flue gas inspection equipment
CN204882317U (en) Filtration efficiency calibration system of filtration equipment

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160817

Termination date: 20200201

CF01 Termination of patent right due to non-payment of annual fee