CN203949849U - A kind of pick-up unit of measuring particle quality concentration - Google Patents

A kind of pick-up unit of measuring particle quality concentration Download PDF

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Publication number
CN203949849U
CN203949849U CN201420400932.0U CN201420400932U CN203949849U CN 203949849 U CN203949849 U CN 203949849U CN 201420400932 U CN201420400932 U CN 201420400932U CN 203949849 U CN203949849 U CN 203949849U
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light scattering
filter membrane
unit
module
particle
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CN201420400932.0U
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王桐
霍昱
何春雷
曹莉
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Qingdao Zhongrui Intelligent Instrument Co.,Ltd.
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QINGDAO ZHONGRUI INTELLIGENT INSTRUMENT CO Ltd
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Abstract

The utility model relates to a kind of pick-up unit of measuring particle quality concentration, comprises data out and display unit and the particle collector unit, β ray calibration module, light scattering measurement module and the sampling pump that are attached thereto; Particle collector unit comprises PM2.5/PM10 cutter, high efficiency particulate air filter and the solenoid valve being connected with both; β ray calibration module comprises filter membrane and the β source being connected with filter membrane, β ray detector and filter membrane conversion motor; Light scattering measurement module comprises optical detection chamber and the light source being attached thereto, light scattering detector; The optical detection chamber of PM2.5/PM10 cutter, solenoid valve, light scattering measurement module, filter membrane, the sampling pump of β ray calibration module are arranged in same gas circuit.The utility model device can ensure the consistance of various conditions in calibration process, reduces error component; The degree of accuracy that ensures particle concentration, direct-reading provides measurement result in real time online again.

Description

A kind of pick-up unit of measuring particle quality concentration
Technical field
The utility model relates to a kind of pick-up unit of measuring particle quality concentration, belongs to measuring concentration of granules in certain field.
Background technology
Because the environmental pollution that the pollution source such as Industrial Boiler, boiler of power plant and Industrial Stoves cause is quite serious, countries in the world all conduct in-depth research this and are controlled, and this just need to detect the particle dust concentration of its discharge.Conventional detection method has light scattering method, β attenuation sensors, opaque method, optical transmission method etc. at present.
Wherein light scattering ratio juris is: from the light beam irradiates of light source in a certain space (measurement zone) of containing particle to be measured, thereby generation scattering, scattered light becomes electric signal after photelectric receiver conversion, after amplifier amplifies, can calculate according to light scattering theory the mass concentration of measurement zone endoparticle thing.These computing method are subject to the impact of particle diameter distribution, the refractive index etc. of variable grain thing, therefore need parameter to be calibrated in good time.Light scattering method is measured accurately, precision is high, reproducible, and measuring speed is fast, for online direct reading measurement mode, without sampling, can real-time continuous provides the instantaneous value of particle concentration; But light scattering method is limited to purity and the particle size of particle, kind or the particle size range of particle change, and all can cause the change of parameter value.Therefore,, in the time that measurement environment changes, need to revise parameter value.
β radiation absorption ratio juris is: the β ray that send in constant β source of intensity is during by medium, the mutual collision loss energy of electronics in β particle and medium and being absorbed.Under low-energy condition, degree of absorption depends on the quality of medium, irrelevant with granularity, composition, color and disperse state of powder dust particle etc.β ray successively, through cleaning filter paper (not gathering dirt sample) and having adopted dirt sample filter paper (same filter paper), is asked for dust concentration in environment according to the difference of 2 β ray amounts of being absorbed.β attenuation sensors is not subject to dust kind, granularity, the impact of the factors such as dispersion degree, shape, color, gloss; Measurement result can with classical standard method-weight method equivalence; It can reduce processing time and the contaminated chance of sample, can not bring personal error and error free accumulation, does not need often calibration and zeroing.It is more a kind of in the indirect measurement method of dust concentration.But it is non-direct access mode, and a period of time interval just provides measurement data.
Also there are the problems referred to above in the additive methods such as opaque method, optical transmission method, does not also have at present a kind of device can avoid environment particle impact, frequently parameter value calibrated, again can real-time online read particle concentration value.
Utility model content
The purpose of this utility model is to overcome the shortcoming existing in prior art, provides one can avoid environment particle impact, frequently parameter value is calibrated the pick-up unit of the measurement particle quality concentration that reads particle concentration value that again can real-time online.
The purpose of this utility model realizes by following scheme: a kind of pick-up unit of measuring particle quality concentration, comprise data processing and display unit and the particle collector unit, β ray calibration module, light scattering measurement module and the sampling pump that are attached thereto, described data processing and display unit comprise: processor and the input/output module, Temperature Humidity Sensor, the atmosphere pressure sensor that are connected with processor; Described particle collector unit comprises PM2.5/PM10 cutter, high efficiency particulate air filter and the solenoid valve being connected with both; Described β ray calibration module comprises filter membrane and the β source being connected with filter membrane, β ray detector and filter membrane conversion motor; Described light scattering measurement module comprises optical detection chamber and the light source being attached thereto, light scattering detector; The optical detection chamber of described PM2.5/PM10 cutter, solenoid valve, light scattering measurement module, filter membrane, the sampling pump of β ray calibration module are arranged in same gas circuit.
Further, described light source is White LED light source, and described light scattering detector is photomultiplier.
Further, described β source is C14 radioactive source, and β ray detector is fluoroscopic examination photomultiplier.
Further, between the filter membrane of described β ray calibration module and sampling pump, be also provided with flowmeter.
The beneficial effects of the utility model are: β ray calibration module, light scattering measurement module are shared to a set of gas circuit, thereby ensure the consistance of two modules various conditions in service in calibration process, reduce error component; In the time that changing, measurement environment utilize β ray calibration module to calibrate the parameter of light scattering measurement module simultaneously, and measurement environment is not while changing, utilize separately light scattering measurement module to carry out the measurement of particle concentration, both can ensure the degree of accuracy of particle concentration, direct-reading online again, provides measurement result in real time.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further elaborated.
Fig. 1 is structural representation of the present utility model.
In figure: 1, PM2.5/PM10 cutter, 2, solenoid valve, 3, optical detection chamber, 4, light source, 5, filter membrane, 6, β source, 7, flowmeter, 8, sampling pump, 9, filter membrane conversion motor, 10, β ray detector, 11, light scattering detector, 12, high efficiency particulate air filter, 13, processor, 14, input/output module, 15, Temperature Humidity Sensor, 16, atmosphere pressure sensor.
Embodiment
A kind of pick-up unit of measuring particle quality concentration as shown in Figure 1, comprise data processing and display unit and the particle collector unit, β ray calibration module, light scattering measurement module and the sampling pump 8 that are attached thereto, described data processing and display unit comprise: processor 13 and the input/output module 14 being connected with processor, Temperature Humidity Sensor 15, atmosphere pressure sensor 16; Described particle collector unit comprises PM2.5/PM10 cutter 1, high efficiency particulate air filter 12 and the solenoid valve 2 being connected with both; Described β ray calibration module comprises filter membrane 5 and the β source 6 being connected with filter membrane, β ray detector 10 and filter membrane conversion motor 9; Light source 4, light scattering detector 11 that described light scattering measurement module comprises optical detection chamber 3 and is attached thereto; The optical detection chamber 3 of described PM2.5/PM10 cutter 1, solenoid valve 2, light scattering measurement module, the filter membrane 5 of β ray calibration module, sampling pump 8 are arranged in same gas circuit.
Further, described light source 4 is White LED light source, and described light scattering detector 11 is photomultiplier; Described light scattering measurement module makes light scattering measurement module keep identical with precision and the range of β ray calibration module by the luminous intensity of controlling light source 4 with the gain amplifier of amplifier in its module.
Further, described β source 6 is C14 radioactive source, and β ray detector 10 is fluoroscopic examination photomultiplier.
Further, between the filter membrane 5 of described β ray calibration module and sampling pump 8, be also provided with flowmeter 7.
Data processing and display unit control sampling pump make air-flow enter from particle collector unit, collect Atmospheric particulates information and judge whether to calibrate instrument, if need calibration, start β ray calibration module, parameter value to light scattering measurement module is calibrated, and treats to open light scattering measurement module after parametric calibration again; If do not needed calibration, directly measure by light scattering measurement module; Solenoid valve 2 is connected high efficiency particulate air filter 12 in the time of school zero, removes the particle in atmosphere, ensures school zero precision; In the time measuring particle concentration, connect PM2.5/PM10 cutter 1.Filter membrane conversion motor 9, for changing the angle of filter membrane 5, in the time of calibration, makes filter membrane 5 perpendicular to gas circuit, and particle can be deposited on filter membrane 5 for the follow-up calibration of weighing; In the time measuring particle concentration, make filter membrane 5 directions parallel with gas circuit, ensure the unimpeded of gas circuit.In order to ensure in calibration process, β ray calibration module, light scattering measurement module are shared to a set of gas circuit, thereby the consistance of two modules various conditions in service in guarantee calibration process, reduce error component, air-flow, under the effect of sampling pump 8, enters from PM2.5/PM10 cutter 1, passes through successively optical detection chamber 3, filter membrane 5, flowmeter 7, thereby ensure that the measuring object of two modules is with one air-flow, realize thus the detection consistance in above-mentioned.
Described solenoid valve 2, under the control of processor 13, can complete the conversion of inlet air flow from PM2.5/PM10 cutter 1 to high efficiency particulate air filter 12, automatically connects high efficiency particulate air filter 12 in the time of school zero, removes the particle in atmosphere, ensures school zero precision; In the time measuring particle concentration, automatically connect PM2.5/PM10 cutter 1.
Described filter membrane conversion motor 9, under the control of processor 13, can be realized the change of the filter membrane angle in gas circuit: in the time that needs are calibrated, make filter membrane 5 perpendicular to gas circuit, particle can be deposited on filter membrane 5, for the follow-up calibration of weighing; In the time of normal measurement particle concentration, make filter membrane 5 directions parallel with gas circuit, ensure the unimpeded of gas circuit.Described light source 4 is White LED light source, and described light scattering detector 11 is photomultiplier.Described beta ray source 4 is C14 radioactive source, and β-ray detector 10 is fluoroscopic examination photomultiplier.For ensureing that described calibration module and detection module have identical precision and range, can control by controlling the luminous intensity of light source 4 and the gain amplifier of follow up amplifier.Described processor 13 drives the human-computer interaction module such as LCD display, keyboard.
In Atmospheric particulates detect, meteorologic parameter has a certain impact to testing result, and what be connected with processor 13 has Temperature Humidity Sensor 15, atmosphere pressure sensor 16 real time record meteorologic parameters, for checking and data correction.In the time that changing, measurement environment utilize β ray calibration module to calibrate the parameter of light scattering measurement module, and measurement environment is not while changing, utilize separately light scattering measurement module to carry out the measurement of particle concentration, both can ensure the degree of accuracy of particle concentration, direct-reading online again, real-time continuous goes out measurement result.
The foregoing is only preferred embodiment of the present utility model, is only illustrative for the utility model, and nonrestrictive.Those skilled in the art is understood, and in the spirit and scope that limit, can carry out many changes to it in the utility model claim, amendment, and even equivalence, but all will fall in protection domain of the present utility model.

Claims (4)

1. a pick-up unit of measuring particle quality concentration, is characterized in that: comprise data processing and display unit and the particle collector unit, β ray calibration module, light scattering measurement module and the sampling pump (8) that are attached thereto; Described data processing and display unit comprise: processor (13) and the input/output module (14) being connected with processor, Temperature Humidity Sensor (15), atmosphere pressure sensor (16); Described particle collector unit comprises PM2.5/PM10 cutter (1), high efficiency particulate air filter (12) and the solenoid valve (2) being connected with both; Described β ray calibration module comprises filter membrane (5) and the β source (6) being connected with filter membrane, β ray detector (10) and filter membrane conversion motor (9); Light source (4), light scattering detector (11) that described light scattering measurement module comprises optical detection chamber (3) and is attached thereto; The optical detection chamber (3) of described PM2.5/PM10 cutter (1), solenoid valve (2), light scattering measurement module, the filter membrane (5) of β ray calibration module, sampling pump (8) are arranged in same gas circuit.
2. the pick-up unit of measurement particle quality concentration according to claim 1, is characterized in that: described light source (4) is White LED light source, and described light scattering detector (11) is photomultiplier.
3. the pick-up unit of measurement particle quality concentration according to claim 1, is characterized in that: described β source (6) is C14 radioactive source, and β ray detector (10) is fluoroscopic examination photomultiplier.
4. the pick-up unit of measurement particle quality concentration according to claim 1, is characterized in that: between the filter membrane (5) of described β ray calibration module and sampling pump (8), be also provided with flowmeter (7).
CN201420400932.0U 2014-07-21 2014-07-21 A kind of pick-up unit of measuring particle quality concentration Active CN203949849U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105334147A (en) * 2015-12-04 2016-02-17 深圳睿境环保科技有限公司 Online particle monitoring system and method based on beta ray method and light scattering method
CN105527203A (en) * 2015-12-31 2016-04-27 聚光科技(杭州)股份有限公司 Smoke dust concentration direct-reading monitoring system and method
CN105572005A (en) * 2015-12-24 2016-05-11 浙江省计量科学研究院 Light-scattering-method-based PM2.5 monitor calibration method and device
CN106383074A (en) * 2016-08-31 2017-02-08 广东美的制冷设备有限公司 Dust sensor calibration method and apparatus
CN108535302A (en) * 2018-03-26 2018-09-14 深圳市华唯计量技术开发有限公司 A kind of air quality detecting device
WO2018171097A1 (en) * 2017-03-20 2018-09-27 中国环境科学研究院 Method for obtaining calibration dust membrane by treating filter membrane and method for carrying out off-site calibration by calibration dust membrane
CN108645767A (en) * 2018-05-02 2018-10-12 华中科技大学 A method of coupling light scattering and beta-ray measurement coal-fired flue-gas particulate matter quality concentration
CN108645817A (en) * 2018-05-02 2018-10-12 华中科技大学 A kind of polymorphic type hybrid particles amount of substance concentration On-line Measuring Method
CN110208157A (en) * 2019-06-11 2019-09-06 重庆工商大学融智学院 A kind of environment dynamic monitoring and method for early warning

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105334147A (en) * 2015-12-04 2016-02-17 深圳睿境环保科技有限公司 Online particle monitoring system and method based on beta ray method and light scattering method
CN105334147B (en) * 2015-12-04 2018-05-08 深圳睿境环保科技有限公司 Particulate matter on-line monitoring system and method based on β ray methods and light scattering method
CN105572005A (en) * 2015-12-24 2016-05-11 浙江省计量科学研究院 Light-scattering-method-based PM2.5 monitor calibration method and device
CN105527203A (en) * 2015-12-31 2016-04-27 聚光科技(杭州)股份有限公司 Smoke dust concentration direct-reading monitoring system and method
CN106383074A (en) * 2016-08-31 2017-02-08 广东美的制冷设备有限公司 Dust sensor calibration method and apparatus
WO2018040603A1 (en) * 2016-08-31 2018-03-08 广东美的制冷设备有限公司 Dust sensor, terminal, and method and device for calibrating dust sensor
WO2018171097A1 (en) * 2017-03-20 2018-09-27 中国环境科学研究院 Method for obtaining calibration dust membrane by treating filter membrane and method for carrying out off-site calibration by calibration dust membrane
CN108535302A (en) * 2018-03-26 2018-09-14 深圳市华唯计量技术开发有限公司 A kind of air quality detecting device
CN108645767A (en) * 2018-05-02 2018-10-12 华中科技大学 A method of coupling light scattering and beta-ray measurement coal-fired flue-gas particulate matter quality concentration
CN108645817A (en) * 2018-05-02 2018-10-12 华中科技大学 A kind of polymorphic type hybrid particles amount of substance concentration On-line Measuring Method
CN108645817B (en) * 2018-05-02 2020-05-19 华中科技大学 Multi-type mixed particle mass concentration online measurement method
CN110208157A (en) * 2019-06-11 2019-09-06 重庆工商大学融智学院 A kind of environment dynamic monitoring and method for early warning

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Address after: 266000 No. 1 Xueyue Road, Chengyang District, Qingdao City, Shandong Province

Patentee after: Qingdao Zhongrui Intelligent Instrument Co.,Ltd.

Address before: 266000 room 703, building 1, No. 58 (Shenghe building), Shangdong tou Road, Laoshan District, Qingdao City, Shandong Province

Patentee before: QINGDAO ZHONGRUI INTELLIGENT INSTRUMENT Co.,Ltd.