CN104568690A - PM2.5 dust detection device and PM2.5 dust detection system of wet-type electric dust collector - Google Patents
PM2.5 dust detection device and PM2.5 dust detection system of wet-type electric dust collector Download PDFInfo
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Abstract
The invention provides a PM2.5 dust detection device and a PM2.5 dust detection system of a wet-type electric dust collector. The device comprises a sampling probe, a particle size divider and a detection device, wherein the sampling probe is arranged in an outlet of a flue or a chimney; the particle size divider is connected with the sampling probe, and the matters with particle size greater than PM2.5 in a primary to-be-detected sample extracted by the sampling probe are filtered and separated; the detection device comprises a dust measuring chamber which is connected with the particle size divider through a pipeline and a PM2.5 analyzer which is arranged in the dust measuring chamber, and the PM2.5 analyzer is used for analyzing a standard to-be-detected sample to obtain the PM2.5 data. The PM2.5 dust detection device is simple in structure, capable of realizing the continuous detection of PM2.5, capable of being applied to the flue or chimney with high humidity and accurate in detection data; the content of the PM2.5 particles is determined by adopting a beta-ray detector. The device has characteristics of low cost, simplicity in operation, high accuracy and the like.
Description
Technical field
The present invention relates to PM2.5 detection technique field, refer to a kind of wet electrical dust precipitator PM2.5 dust investigating and system thereof especially.
Background technology
Fine particle refers to that in surrounding air, aerodynamics equivalent diameter is less than or equal to the particle of 2.5 microns, the PM2.5 that namely it has often been said.It can be suspended in air the long period, and content concn is higher in atmosphere for it, just represents air pollution more serious.Although PM2.5 is the component that in earth atmosphere composition, content is little, it has important impact to air quality and visibility etc.Compared with thicker Atmospheric particulates, PM2.5 particle diameter is little, and area is large, active strong, easily attach poisonous and harmful substances (such as, heavy metal, microorganism etc.), and the residence time is in an atmosphere grown, fed distance is far away, thus larger on the impact of health and atmosphere quality.The chimney of factory or the discharge of flue are the principal elements of PM2.5, therefore need strictly to control the chimney of factory or the fume emission of flue, traditional factory does not have PM2.5 checkout equipment, or adopt Portable weight method analyzer to measure PM2.5 content, cannot the test problems of fundamentally PM2.5, simultaneously traditional Portable weight method analyzer, needs expensive filter membrane, testing cost is high, and can not continuity detect.
Summary of the invention
The present invention proposes a kind of wet electrical dust precipitator PM2.5 dust investigating and system thereof, solves testing cost in prior art high, cannot to the problem of PM2.5 dust continuous monitoring.
Technical scheme of the present invention is achieved in that
A kind of wet electrical dust precipitator PM2.5 dust investigating, comprising:
Sampling probe, is arranged at the exit of flue or chimney, for extracting preliminary testing sample;
Particle diameter dispenser, is connected with described sampling probe, and more than the PM2.5 particle diameter thing isolated by filtration in the preliminary testing sample extracted by described sampling probe, to obtain standard testing sample;
Pick-up unit, is comprised the dust measurement room be connected with described particle diameter dispenser pipeline, and is arranged on the PM2.5 analyser of described dust measurement indoor, namely obtained the data of PM2.5 by the analyzing and processing of described PM2.5 analyser to above-mentioned standard testing sample.
As preferred technical scheme, this pick-up unit also comprises, the data terminal be connected with described PM2.5 analyser, and described data terminal comprises processor, storer, display device etc., to realize the control to the work of described PM2.5 analyser, and the storage, display etc. to PM2.5 data.
As preferred technical scheme, described pick-up unit carries out communication with data terminal by wired mode or wireless mode and is connected; Preferably, described wireless mode comprises WiFi, ZigBee, 3G etc.
As preferred technical scheme, pre-service pipeline is also provided with between described sampling probe and particle diameter dispenser, well heater is provided with in the outside of described pre-service pipeline, described well heater is more than 130 DEG C to the heating-up temperature of pre-service pipeline, be generally 130-150 DEG C, to realize the dry flue gas that described preliminary testing sample is in more than dew point.
As preferred technical scheme, described sampling probe is connected with the first preventing clogging up device, prevents described sampling probe from occurring the problem of fouling and clogging; Described first preventing clogging up device comprises the air pipeline be communicated with described sampling probe, arranges the dilution air of described air pipeline end, arranges the differential manometer on described air pipeline, and solenoid valve;
Described solenoid valve is electrically connected with differential manometer and dilution air respectively, when the dust granules thing that particle diameter in described preliminary testing sample is larger blocks described sampling probe, described differential manometer detects that pressure reduction becomes large, described solenoid valve is opened and is controlled described dilution air work, described sampling probe is cleaned out, treat that described differential manometer detects that pressure reduction diminishes, dilution air described in described closed electromagnetic valve.
In order to ensure that described sampling probe does not condense, described air pipeline is also provided with heating arrangement.
As preferred technical scheme, described particle diameter dispenser is connected with the second preventing clogging up device, is the problem preventing described sampling probe from occurring fouling and clogging; Described second preventing clogging up device comprises the air pipeline be communicated with described particle diameter dispenser, arranges the jet blower of described air pipeline end, arranges the differential manometer on described air pipeline, and solenoid valve;
Described solenoid valve is electrically connected with differential manometer and jet blower respectively, when the dust granules thing that particle diameter in described standard testing sample is larger blocks described particle diameter dispenser, described differential manometer detects that pressure reduction becomes large, described solenoid valve is opened and is controlled described jet blower work, described particle diameter dispenser is cleaned out, treat that described differential manometer detects that pressure reduction diminishes, jet blower described in described closed electromagnetic valve.
As preferred technical scheme, described PM2.5 analyser is β ray detector, described β ray emitter transmitting illuminant is through the described dust measurement room being full of standard testing sample, irradiate powder dust particle, irradiated powder dust particle is by reflected light signal, the light signal strength of reflection is directly proportional to dust concentration, thus β ray detector calculates the dust concentration in flue or chimney.
Present invention also offers a kind of wet electrical dust precipitator PM2.5 dust detection system, comprising:
Sampling module, for extracting the preliminary testing sample in the exit of flue or chimney;
Pretreatment module, heats above-mentioned preliminary testing sample, makes described preliminary testing sample be the dry flue gas of more than dew point.
Particle diameter dispenser module, by more than the PM2.5 particle diameter thing isolated by filtration in above-mentioned pretreated preliminary testing sample, to obtain standard testing sample;
Detection module, by the analyzing and processing of PM2.5 analyser to above-mentioned standard testing sample, obtains the data of PM2.5.
As preferred technical scheme, this system also comprises terminal module, and described terminal module comprises processing module, memory module, display module etc., to realize the control to described detection module work, and the storage, display etc. to PM2.5 data.
Beneficial effect:
(1) structure is simple, and the continuity achieving PM2.5 detects, and may be used in the larger flue of humidity or chimney, detects data accurate;
(2) adopt β ray detector to measure the content of PM2.5 particle, have that cost is low, simple to operate, accuracy rate high;
(3) preventing clogging up device by arranging on sampling probe and particle diameter dispenser, ensure that the continuity of said structure detects.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the present invention: a kind of structural representation of wet electrical dust precipitator PM2.5 dust investigating;
Fig. 2 is the present invention: a kind of schematic diagram of wet electrical dust precipitator PM2.5 dust detection system.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
With reference to shown in Fig. 1, a kind of wet electrical dust precipitator PM2.5 dust investigating 3, comprising: sampling probe 1, particle diameter dispenser 2, pick-up unit 3, data terminal 4.Wherein, sampling probe 1 is arranged at the exit of flue or chimney 11, for extracting preliminary testing sample; Particle diameter dispenser 2 is connected with sampling probe 1, and more than the PM2.5 particle diameter thing isolated by filtration in the preliminary testing sample extracted by sampling probe 1, to obtain standard testing sample; Pick-up unit 3 comprises the dust measurement room 31 be connected with particle diameter dispenser 2 pipeline, and is arranged on the PM2.5 analyser 32 in dust measurement room 31, is namely obtained the data of PM2.5 by the analyzing and processing of PM2.5 analyser 32 to above-mentioned standard testing sample.Data terminal 4 is connected with PM2.5 analyser 32, and data terminal 4 comprises processor, storer, display device etc., to realize the control worked to PM2.5 analyser 32, and the storage, display etc. to PM2.5 data.
Pick-up unit 3 of the present invention carries out communication with data terminal 4 by wired mode or wireless mode and is connected; Preferably, wireless mode comprises WiFi, ZigBee, 3G etc.
Because the dusty gas in flue or chimney may exist larger humidity, therefore between sampling probe 1 and particle diameter dispenser 2, pre-service pipeline 5 is also provided with, well heater 51 is provided with in the outside of pre-service pipeline 5, the heating-up temperature of well heater 51 pairs of pre-service pipelines 5 is more than 130 DEG C, preferable range is 130-150 DEG C, be the dry flue gas being in more than dew point to realize preliminary testing sample, with further by particle diameter dispenser 2.
In order to the problem preventing sampling probe 1 from occurring fouling and clogging, sampling probe 1 of the present invention is connected with the first preventing clogging up device 6.Wherein, the first preventing clogging up device 6 comprises the air pipeline 61 be communicated with sampling probe 1, arranges the dilution air 63 of air pipeline 61 end, arranges the differential manometer 62 on air pipeline 61, and solenoid valve 64;
Solenoid valve 64 is electrically connected with differential manometer 62 and dilution air 63 respectively, when the dust granules thing blocking sampling probe 1 that particle diameter in preliminary testing sample is larger, differential manometer 62 detects that pressure reduction becomes large, solenoid valve 64 is opened and is controlled dilution air 63 and works, sampling probe 1 is cleaned out, treat that differential manometer 62 detects that pressure reduction diminishes, solenoid valve 64 cuts out dilution air 63.In order to ensure that sampling probe 1 does not condense, air pipeline 61 is also provided with heating arrangement 65.
In order to the problem preventing particle diameter dispenser 2 from occurring fouling and clogging, particle diameter dispenser 2 of the present invention is connected with the second preventing clogging up device 7, second preventing clogging up device 7 comprises the air pipeline 71 be communicated with particle diameter dispenser 2, the jet blower 73 of air pipeline 71 end is set, differential manometer 72 on air pipeline 71 is set, and solenoid valve 74;
Solenoid valve 74 is electrically connected with differential manometer 72 and jet blower 73 respectively, when the dust granules thing blocking particle diameter dispenser 2 that particle diameter in standard testing sample is larger, differential manometer 72 detects that pressure reduction becomes large, solenoid valve 74 is opened and control jet blower fan 73 works, particle diameter dispenser 2 is cleaned out, treat that differential manometer 72 detects that pressure reduction diminishes, solenoid valve 74 cuts out jet blower 73.
PM2.5 analyser 32 in the present invention is β ray detector, β ray emitter is made up of beta ray source, wave filter, β ray detector, by beta ray source transmitting illuminant through the dust measurement room 31 being full of standard testing sample, irradiate powder dust particle, irradiated powder dust particle is by reflected light signal, the light signal strength of reflection is directly proportional to dust concentration, thus β ray detector calculates the dust concentration in flue or chimney.
During use, pass through to extract a certain amount of dusty gas larger with humidity from flue or chimney by sampling probe 1, well heater heating outside pre-service pipeline, wet flue gas is heated to more than 130 DEG C of dew points, dry flue gas after heating more than dew point is by particle diameter dispenser 2, and the dust granules of above for PM2.5 category size is kept out in outside, and PM2.5 and following dust granules thing enter the exhaust gas dust measuring chamber 31 of pick-up unit 3 through particle diameter dispenser 2, the β ray detector be placed in dust measurement room 31 detects the content accurately measuring PM2.5 continuously in real time.
In order to prevent sampling probe 1 and particle diameter dispenser 2 from blocking, the preventing clogging up device that sampling probe 1 and particle diameter dispenser 2 are arranged.
With reference to shown in Fig. 2, present invention also offers a kind of wet electrical dust precipitator PM2.5 dust detection system, comprising:
Sampling module 101 is for extracting the preliminary testing sample in the exit of flue or chimney;
Above-mentioned preliminary testing sample heats by pretreatment module 102, makes preliminary testing sample be the dry flue gas of more than dew point.
Particle diameter dispenser module 103 by more than the PM2.5 particle diameter thing isolated by filtration in above-mentioned pretreated preliminary testing sample, to obtain standard testing sample;
Detection module 104 by PM2.5 analyser to the analyzing and processing of above-mentioned standard testing sample, obtain PM2.5 data and
Terminal module 105, terminal mould, 105 comprise processing module, memory module, display module etc., to realize the control worked to detection module 104, and the storage, display etc. to PM2.5 data.
The present invention devises a set of highly sensitive continuity extraction-type PM2.5 dust measurement device, this device can use the PM2.5 on-line monitoring with the import and export flue of wet electrical dust precipitator, thus instead of traditional Portable weight method analyzer, avoid the use of expensive filter membrane, thus reduction use cost, improve continuity and the accuracy of PM2.5 dust monitoring.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a wet electrical dust precipitator PM2.5 dust investigating, is characterized in that, comprising:
Sampling probe, is arranged at the exit of flue or chimney, for extracting preliminary testing sample;
Particle diameter dispenser, is connected with described sampling probe, and more than the PM2.5 particle diameter thing isolated by filtration in the preliminary testing sample extracted by described sampling probe, to obtain standard testing sample;
Pick-up unit, is comprised the dust measurement room be connected with described particle diameter dispenser pipeline, and is arranged on the PM2.5 analyser of described dust measurement indoor, namely obtained the data of PM2.5 by the analyzing and processing of described PM2.5 analyser to above-mentioned standard testing sample.
2. a kind of wet electrical dust precipitator PM2.5 dust investigating according to claim 1, it is characterized in that, this pick-up unit also comprises, the data terminal be connected with described PM2.5 analyser, described data terminal comprises processor, storer, display device, to realize control to the work of described PM2.5 analyser, and to the storage of PM2.5 data, display.
3. a kind of wet electrical dust precipitator PM2.5 dust investigating according to claim 1, is characterized in that, described pick-up unit carries out communication with data terminal by wired mode or wireless mode and is connected;
Described wireless mode comprises WiFi, ZigBee, 3G.
4. a kind of wet electrical dust precipitator PM2.5 dust investigating according to claim 1, it is characterized in that, pre-service pipeline is also provided with between described sampling probe and particle diameter dispenser, be provided with well heater in the outside of described pre-service pipeline, described well heater is 130 DEG C-150 DEG C to the heating-up temperature of pre-service pipeline.
5. a kind of wet electrical dust precipitator PM2.5 dust investigating according to claim 1, it is characterized in that, described sampling probe is connected with the first preventing clogging up device, prevents described sampling probe from occurring the problem of fouling and clogging; Described first preventing clogging up device comprises the air pipeline be communicated with described sampling probe, arranges the dilution air of described air pipeline end, arranges the differential manometer on described air pipeline, and solenoid valve;
Described solenoid valve is electrically connected with differential manometer and dilution air respectively, when the dust granules thing that particle diameter in described preliminary testing sample is larger blocks described sampling probe, described differential manometer detects that pressure reduction becomes large, described solenoid valve is opened and is controlled described dilution air work, described sampling probe is cleaned out, treat that described differential manometer detects that pressure reduction diminishes, dilution air described in described closed electromagnetic valve.
6. a kind of wet electrical dust precipitator PM2.5 dust investigating according to claim 5, is characterized in that, described air pipeline is also provided with heating arrangement.
7. a kind of wet electrical dust precipitator PM2.5 dust investigating according to claim 1, it is characterized in that, described particle diameter dispenser is connected with the second preventing clogging up device, is the problem preventing described sampling probe from occurring fouling and clogging; Described second preventing clogging up device comprises the air pipeline be communicated with described particle diameter dispenser, arranges the jet blower of described air pipeline end, arranges the differential manometer on described air pipeline, and solenoid valve;
Described solenoid valve is electrically connected with differential manometer and jet blower respectively, when the dust granules thing that particle diameter in described standard testing sample is larger blocks described particle diameter dispenser, described differential manometer detects that pressure reduction becomes large, described solenoid valve is opened and is controlled described jet blower work, described particle diameter dispenser is cleaned out, treat that described differential manometer detects that pressure reduction diminishes, jet blower described in described closed electromagnetic valve.
8. a kind of wet electrical dust precipitator PM2.5 dust investigating according to claim 1, it is characterized in that, described PM2.5 analyser is β ray detector.
9. the detection system of a kind of wet electrical dust precipitator PM2.5 dust as described in claim as arbitrary in claim 1-8, is characterized in that, comprising:
Sampling module, for extracting the preliminary testing sample in the exit of flue or chimney;
Pretreatment module, heats above-mentioned preliminary testing sample, makes described preliminary testing sample be the dry flue gas of more than dew point.
Particle diameter dispenser module, by more than the PM2.5 particle diameter thing isolated by filtration in above-mentioned pretreated preliminary testing sample, to obtain standard testing sample;
Detection module, by the analyzing and processing of PM2.5 analyser to above-mentioned standard testing sample, obtains the data of PM2.5.
10. a kind of wet electrical dust precipitator PM2.5 dust detection system according to claim 9, it is characterized in that, this system also comprises terminal module, described terminal module comprises processing module, memory module, display module, to realize control to described detection module work, and to the storage of PM2.5 data, display.
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Cited By (6)
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| CN105092445A (en) * | 2015-09-10 | 2015-11-25 | 湖南长重机器股份有限公司 | Online monitoring device and method for PM2.5 industrial flue gas |
| CN105135897A (en) * | 2015-09-10 | 2015-12-09 | 湖南长重机器股份有限公司 | Self-adjusting system and method for PM 2.5 flue gas flow fields |
| CN105547949A (en) * | 2016-01-29 | 2016-05-04 | 中绿环保科技股份有限公司 | Removable low-concentration dust meter |
| CN105891062A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Online wear particle monitoring device adopting electronic control ring adsorption and adjacent capacitance |
| CN106402655A (en) * | 2016-10-25 | 2017-02-15 | 苏州曼德克光电有限公司 | Draught fan protector of air-supply system |
| CN109459361A (en) * | 2018-12-26 | 2019-03-12 | 广州市怡文环境科技股份有限公司 | A kind of dust measurement system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105092445A (en) * | 2015-09-10 | 2015-11-25 | 湖南长重机器股份有限公司 | Online monitoring device and method for PM2.5 industrial flue gas |
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| CN105135897B (en) * | 2015-09-10 | 2018-02-13 | 湖南长重机器股份有限公司 | A kind of PM2.5 flue gas flow fields self-adjusting system and its method |
| CN105092445B (en) * | 2015-09-10 | 2018-04-20 | 湖南长重机器股份有限公司 | A kind of on-Line Monitor Device and its method of PM2.5 industrial smokes |
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| CN105891062A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Online wear particle monitoring device adopting electronic control ring adsorption and adjacent capacitance |
| CN106402655A (en) * | 2016-10-25 | 2017-02-15 | 苏州曼德克光电有限公司 | Draught fan protector of air-supply system |
| CN109459361A (en) * | 2018-12-26 | 2019-03-12 | 广州市怡文环境科技股份有限公司 | A kind of dust measurement system |
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