CN207147931U - Constant speed balance soot dust granule thing concentration readout portable measurement system - Google Patents
Constant speed balance soot dust granule thing concentration readout portable measurement system Download PDFInfo
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- CN207147931U CN207147931U CN201720926365.6U CN201720926365U CN207147931U CN 207147931 U CN207147931 U CN 207147931U CN 201720926365 U CN201720926365 U CN 201720926365U CN 207147931 U CN207147931 U CN 207147931U
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Abstract
Originally it is new to be related to constant speed balance soot dust granule thing concentration readout portable measurement system, including quality collecting unit, sensor cluster, sampling head, center processing unit, quality collecting unit include：Shake chamber, and in intracavitary of shaking provided with vibrating diaphragm and the bar that shakes, the entrance hole diameter on the bar top that shakes is 7 9mm, and the wall thickness for the bar that shakes is 0.45 0.55mm, and the end aperture for the bar that shakes is 19 21mm；Length is 100 120mm, and bar side of shaking face is curve, and vibrating diaphragm is arranged at the top of the bar that shakes；Shake and be provided with air inlet above chamber, the chamber lower section that shakes is provided with gas outlet, and intracavitary of shaking is provided with sensor cluster；Sampling head is arranged in exhaust emission pipe, is connected with air inlet；Sensor cluster is again provided with exhaust piping；Center processing unit includes center processor, flue dust flow detection and control unit, sampling pump, center processing unit and mutually communicated with quality collecting unit, sensor cluster, and sampling pump is connected by pipeline with the chamber gas outlet that shakes.The present apparatus is suitable for high-altitude, the direct-reading of narrow, bad environments portable rapid field tests.
Description
Technical field
The present invention relates in a organized way or uncontrollable discharge measuring concentration of granules in certain, such as flue dust direct-reading, particularly relate to
And the portable measurement system and method for a kind of particle concentration direct-reading such as flue dust based on constant speed balance.
Background technology
Of the current measuring concentration of granules in certain of discharge or uncontrollable discharge in a organized way, flue dust or uncontrollable discharge
Grain thing concentration determination belongs to routine monitoring in China, and daily monitoring task is very heavy.
In the method for airborne particulate analyte detection, oscillating balance method for principle live flue dust direct reading test instrument at home and abroad
It has been used widely.But the flue dust flow of oscillating balance method measurement is used to be applied typically in 1L/min or so " empty
Gas " particulate matter (such as TSP of PM2.5 10), " microgram rank " concentration measurement in.
And in the detection of the particle concentration of discharge or uncontrollable discharge in a organized way, it is the characteristics of its pollutant：Discharge
Soot dust granule logistics capacity it is big, (general milligram rank) much higher in the concentration relative atmospheric of particulate matter, high humidity, particle is close
Spend the features such as changeable, according to GB16157 (particulate matter and the gaseous contaminant method of sampling in Concentration in Fixed Pollutants Source) requirement not
The measurement of " constant speed " or constant flow (general 20~30L/min or so) can be used for by the way of " full stream ", especially in flue dust
High-precision direct-reading in terms of；Therefore it is difficult to oscillating balance method being applied in the detection of flue dust or uncontrollable discharge.
In the detection of current flue dust or uncontrollable discharge, typically from filter membrane weight method, with oscillating balance method
Compare, its need at the scene collecting sample, return laboratory heat treatment after weigh quality again, and then it is dense to obtain mass concentration, discharge
The data such as degree, cycle length, expend a large amount of manpowers, financial resources, material resources, do not meet low-carbon environment-friendly, efficient policy that country advocates；And
And the equipment that filter membrane weight method needs carry is a lot, takes larger space；Detected in existing at present apply in stationary source flue dust
Patent have " a kind of oscillating balance dust concentration direct reading measurement instrument with flow dividing structure of CN201520460472.5 ", but its side
Method core content is to use " shunting " scheme, and artificial is divided into emission two strands, but the two strands of emissions shunted is real-time
" constant speed " property is difficult manual control, and " constant speed " of flue dust will influence oscillating balance measurement result accuracy, directly affect detection
As a result accuracy；And the separate system is extremely complex, high-altitude, narrow, bad environments portable quick is not suitable for
On-the-spot test.
The content of the invention
In view of the above-mentioned problems, this patent provides a kind of soot dust granule thing concentration portable type measuring based on oscillating balance method
System and method, it can realize that " live direct-reading " is (existing in the detection of current flue dust or uncontrollable discharge using the present apparatus
Field can obtain the finally detection data such as particle concentration, concentration of emission) and be easy to carry；Testing result closely conforms to national inspection
Mark is accurate.
The technical solution used in the present invention is as follows：
Constant speed balance soot dust granule thing concentration readout portable measurement system, including quality collecting unit, sensor cluster,
Sampling head, center processing unit, the quality collecting unit include：Shake chamber, in intracavitary of shaking provided with vibrating diaphragm and the bar that shakes, the bar that shakes
The entrance hole diameter on top is 7-9mm, and the wall thickness for the bar that shakes is 0.45-0.55mm, and the end aperture for the bar that shakes is 19-21mm；Length is
100-120mm, bar side of shaking face are curve, and the vibrating diaphragm is arranged at the top of the bar that shakes；Shake and be provided with air inlet above chamber, the chamber lower section that shakes is set
There is gas outlet, intracavitary of shaking is provided with sensor cluster；The sensor cluster includes temperature sensor, flow sensor, pressure and passed
Sensor；The sampling head is arranged in exhaust emission pipe, is connected with air inlet；Sensor group is again provided with exhaust piping
Part；The center processing unit includes center processor, flue dust flow detection and control unit, sampling pump；The center processing
Unit is mutually communicated with quality collecting unit, sensor cluster, and sampling pump is connected by pipeline with the chamber gas outlet that shakes.
Further：The chamber that shakes includes cavity of resorption and is hinged on the upper chamber cover of cavity of resorption side, between cavity of resorption and upper chamber cover
Provided with sealing strip, shock absorber, heat-insulation layer and vibration insulation, the wall of chamber four that shakes is provided with heater element.
Further：The air inlet is arranged on upper chamber cover, has intake interface and guide channel；Described be oriented to is led to
Road upper end is connected with intake interface, and extension covers vibrating diaphragm downwards for lower end.
Further：Also include probe tube, the probe tube is arranged between sampling head and quality collecting unit, described to take
Sample inside pipe wall is enclosed with heater element.
Further：Also include probe tube, the probe tube is arranged between quality collecting unit and center processing unit.
Constant speed balance soot dust granule thing concentration readout portable type measuring method, comprises the following steps：
(1) sensor cluster is set in flue, by sensor cluster by cigarette temperature, flow velocity, the flue gas pressures in flue
Relevant information pass to center processing unit；
(2) mass measurement of particulate matter in flue dust in flue is completed by quality collecting unit, passes through quality collecting unit
Interior sensor cluster passes information to center processing unit；
(3) center processing unit completes flue dust volume acquisition, the quality gathered data of bond quality collecting unit, Yi Jiyan
The data of flue gas, which calculate, in road obtains mass concentration, concentration of emission final data.
Beneficial effect
The present invention is suitable for high-altitude, narrow, bad environments portable rapid field tests.It is real by center processor
It is existing " live direct-reading ", " full stream " that flue dust can be realized by the bar that shakes of special construction, single by flue dust flow detection and control
Member can realize " constant speed " of flue dust flow velocity and realize measuring system and method portable, that meet national standard, greatly shorten
Detection cycle.
Brief description of the drawings
Fig. 1 the structural representation of present invention one；
The structural representation two of Fig. 2 present invention；
Fig. 3 is the chamber internal structure schematic diagram of shaking of the present invention；
Fig. 4 is to be weighed correction data using the sampling of the present invention and the soot dust granule amount of substance of filter membrane weight method；
In figure：1- temperature sensors, 2- flow sensors, 3- flue gas pressures sensor, 4- samplings elbow, 5- heating members
Part, 51 heat-insulation layers；
Shake bar, 63- of 6- mass collecting unit, 61- vibrating diaphragms, 62- shakes chamber, 631 upper chamber covers, 632 cavity of resorptions, air inlet 66, goes out
Gas port 65, damper 67；
7- exhaust emission pipes；Sample gas flows of the 8- containing particle, 9- center processing units, 10- probe tubes.
Embodiment
The present invention is described in further details with reference to specific embodiment and accompanying drawing.
As shown in Figure 1, Figure 2, Figure 3 shows, constant speed balance soot dust granule thing concentration readout portable measurement system, including quality are adopted
Collect unit, sensor cluster, sampling head, center processing unit, the quality collecting unit includes：Shaken chamber, and shaking, intracavitary is provided with
Vibrating diaphragm and shake bar, the entrance hole diameter on the bar top that shakes is 7-9mm, and the wall thickness of the bar that shakes is 0.45-0.55mm, the end aperture for the bar that shakes
Footpath is 19-21mm；Length is 100-120mm, and bar side of shaking face is curve, and the vibrating diaphragm is arranged at the top of the bar that shakes；Shake and set above chamber
There is air inlet, be provided with gas outlet below the chamber that shakes, intracavitary of shaking is provided with sensor cluster；The sensor cluster includes TEMP
Device, flow sensor, pressure sensor；The sampling head is arranged in exhaust emission pipe, is connected with air inlet；In flue gas leading
Sensor cluster is again provided with road；The center processing unit include center processor, flue dust flow detection and control unit,
Sampling pump；The center processing unit mutually communicates with quality collecting unit, sensor cluster, and sampling pump passes through pipeline and the chamber that shakes
Gas outlet connects.
The present invention is in the detection of flue dust or uncontrollable discharge, by the way that upper end open is small, lower ending opening is big, side is song
The bar that shakes of line, tapered rod, middle indent, bottom evagination is in the bar top that shakes, per all rounding off between part, from top to end
The free form surface of the indent of smoothness is formed for free forming, compared with bar is shaken in conventional taper, the bar that shakes of this shape is in flue dust stream
When measuring unstable, especially in the case where soot dust granule density is changeable, vibrational feedback result is reliable and stable, close in soot dust granule
Spend playing a major role for the bar top that shaken in the case of stablizing, when soot dust granule density is unstable, the arch of underlying protrusion
Shape space, it is more sensitive for the feedback of vibration, ensure the precision of quality collection, without vibrating diaphragm is removed into measurement, be more suitable for
Used in the detection of flue dust or uncontrollable discharge.
The shake entrance hole diameter of bar is controlled in 8mm or so, it is possible to achieve the collection of the flue dust of big flow, such as 20~30L/min
Detection, the collection of the flue dust flow of left and right.Center processing unit is communication with each sensor cluster, quality collecting unit, can
With steady temperature 30 to 110 degrees Celsius according to stationary source in a organized way or the sampling operating mode of uncontrollable discharge can be set；
Resolution capability can reach 0.1 milligram, reach high accuracy, realize live direct-reading.The setting of the sensor cluster for intracavitary of shaking, passes through
Center processor can realize automatic compensation, to adapt to diversified working environment.
Shake bar design parameter everywhere reality use during, according to different flow and resolving accuracy according to material
Mechanics principle, adjust the mass resolution to shake needed for each gain of parameter of bar.
In center processing unit, the center processor of setting can be PLC, or other can realize the work(
The intelligent processor of energy, is not limited herein.
In the present embodiment, magnetic field caused by electromagnet is used to provide driving force for the bar that shakes；Flue dust flow detection and control
Unit is adjusted in real time by the feedback of flow sensor to the flow velocity of flue dust (reaches adjustment mesh by controlling the rotating speed of sampling pump
), ensure the flow velocity of flue dust in a steady state value；Quality collecting unit by measure the certain intervals time ventilation before and after two
Two intrinsic frequencies of the individual bar that shakes, can calculate the particulate matter quality on filter membrane, then divided by this time in the flue dust that flows through
Cumulative volume can be obtained by the mean concentration of particulate matter, and all of above data processing is all completed by center processor.
Further：The chamber that shakes includes cavity of resorption and is hinged on the upper chamber cover of cavity of resorption side, between cavity of resorption and upper chamber cover
Provided with sealing strip, shock absorber, heat-insulation layer and vibration insulation, the wall of chamber four that shakes is provided with heater element.
The concrete structure and form of shock absorber do not limit herein, can be elastomeric material parcel shake chamber or other
Corresponding structure.
In the present embodiment, by the vibration insulation and shock absorber in the chamber that shakes, by setting damper so that vibration is not outer
Pass, avoid causing secondary vibration；By setting damping layer in the instantaneous position of the vibration of bar that shakes, avoid vibrational energy from being coupled into and come,
Make to shake vibration of bar only have flue dust by when can just occur, can be with when flue dust is in big flow, particle concentration change
Well adapt to, avoid oscillatory instability；Further improve the accuracy of result.
Further：Air inlet is arranged on upper chamber cover, has intake interface and guide channel；Guide channel upper end with
Intake interface connects, and extension covers vibrating diaphragm downwards for lower end.
Guide channel ensures that flue dust circulation stability is more preferable, ensures that the flue dust of collection completely extends across vibrating diaphragm, as a result accurate steady
It is fixed.
In the present embodiment, probe tube connects if placed at before quality collecting unit with air inlet, then in sampling pipe
Need to be enclosed with heater element on wall, ensure flue dust when entering quality collecting unit, in high temperature, if probe tube is arranged on
It is connected after quality collecting unit with gas outlet, that need not set heater element.
Constant speed balance soot dust granule thing concentration readout portable type measuring method, comprises the following steps：
(1) sensor cluster is set in flue, by sensor cluster by cigarette temperature, flow velocity, the flue gas pressures in flue
Relevant information pass to center processing unit；
(2) mass measurement of particulate matter in flue dust in flue is completed by quality collecting unit, passes through quality collecting unit
Interior sensor cluster passes information to center processing unit；
(3) center processing unit completes sampling volume collection, the quality gathered data of bond quality collecting unit, Yi Jiyan
The data of flue gas, which calculate, in road obtains mass concentration, concentration of emission final data.
When sampling air flow is deposited on filter membrane by filter membrane, particulate matter therein, the mass change of filter membrane causes oscillation frequency
The change of rate, the quality for being deposited on particulate matter on filter membrane is calculated by frequency of oscillation change, further according to flow, site environment temperature
Degree and air pressure calculate the mass concentration of the period particulate matter, will not be described here.
Shown in Fig. 4, in the present embodiment, there is provided a kind of specific size for the bar that shakes, the entrance hole diameter 8mm on bar top, shake
The wall thickness 0.5mm of bar, the end aperture 20mm for the bar that shakes；Length 110mm, in flue dust flow 25L/min, using this method with
The particulate matter quality contrast number that filter membrane weight method measures, the quality error of particulate matter are adopted within 5% using apparatus of the present invention
The data measurement of collection is accurate, with a high credibility, it is possible to achieve " full stream ", " constant speed ", portable.Be particularly suitable for use in high-altitude, it is narrow,
The portable rapid field test of bad environments.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Effect embodiment is applied to other fields, but every without departing from technical solution of the present invention content, the technical spirit according to the present invention
Any simple modification, equivalent variations and the remodeling made to above example, still fall within the protection domain of technical solution of the present invention.
Claims (5)
1. constant speed balance soot dust granule thing concentration readout portable measurement system, it is characterised in that including quality collecting unit, pass
Sensor component, sampling head, center processing unit,
The quality collecting unit includes：Shake chamber, provided with vibrating diaphragm and is shaken bar in intracavitary of shaking, it is described shake bar top entrance hole diameter be
7-9mm, the wall thickness for the bar that shakes is 0.45-0.55mm, and the end aperture for the bar that shakes is 19-21mm；Length is 100-120mm；Shake bar side
Face is curve, and the vibrating diaphragm is arranged at the top of the bar that shakes；Shake and be provided with air inlet above chamber, the chamber lower section that shakes is provided with gas outlet, intracavitary of shaking
Provided with sensor cluster；
The sensor cluster includes temperature sensor, flow sensor, pressure sensor；
The sampling head is arranged in exhaust emission pipe, is connected with air inlet；Sensor group is again provided with exhaust piping
Part；The center processing unit includes center processor, flue dust flow detection and control unit, sampling pump；The center processing
Unit is mutually communicated with quality collecting unit, sensor cluster, and sampling pump is connected by pipeline with the chamber gas outlet that shakes.
2. constant speed balance soot dust granule thing concentration readout portable measurement system according to claim 1, it is characterised in that：
The chamber that shakes includes cavity of resorption and is hinged on the upper chamber cover of cavity of resorption side, be provided between cavity of resorption and upper chamber cover sealing strip, shock absorber,
Heat-insulation layer and vibration insulation, the wall of chamber four that shakes are provided with heater element.
3. constant speed balance soot dust granule thing concentration readout portable measurement system according to claim 2, it is characterised in that：
The air inlet is arranged on upper chamber cover, has intake interface and guide channel；The guide channel upper end and intake interface
Connection, extension covers vibrating diaphragm downwards for lower end.
4. constant speed balance soot dust granule thing concentration readout portable measurement system according to claim 3, it is characterised in that：
Also include probe tube, the probe tube is arranged between sampling head and quality collecting unit, and the sampling inside pipe wall is enclosed with hair
Thermal element.
5. constant speed balance soot dust granule thing concentration readout portable measurement system according to claim 4, it is characterised in that：
Also include probe tube, the probe tube is arranged between quality collecting unit and center processing unit.
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| CN201720926365.6U CN207147931U (en) | 2017-07-28 | 2017-07-28 | Constant speed balance soot dust granule thing concentration readout portable measurement system |
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| CN201720926365.6U CN207147931U (en) | 2017-07-28 | 2017-07-28 | Constant speed balance soot dust granule thing concentration readout portable measurement system |
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| CN207147931U true CN207147931U (en) | 2018-03-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238560A (en) * | 2017-07-28 | 2017-10-10 | 青岛众瑞智能仪器有限公司 | Constant speed balance soot dust granule thing concentration readout portable measurement system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238560A (en) * | 2017-07-28 | 2017-10-10 | 青岛众瑞智能仪器有限公司 | Constant speed balance soot dust granule thing concentration readout portable measurement system and method |
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| GR01 | Patent grant | ||
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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 No. 3 Xiandong Road, Xiazhuang Street, Chengyang District, Qingdao City, Shandong Province Patentee before: QINGDAO ZHONGRUI INTELLIGENT INSTRUMENT Co.,Ltd. |
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