CN214408569U - Respiratory dust on-line monitoring system based on electrostatic method - Google Patents
Respiratory dust on-line monitoring system based on electrostatic method Download PDFInfo
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- CN214408569U CN214408569U CN202020541815.1U CN202020541815U CN214408569U CN 214408569 U CN214408569 U CN 214408569U CN 202020541815 U CN202020541815 U CN 202020541815U CN 214408569 U CN214408569 U CN 214408569U
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Abstract
The utility model particularly relates to a respiratory nature dust on-line monitoring system based on electrostatic method, relate to the real-time on-line monitoring field of particulate matter, including on-the-spot respiratory nature dust collector, data wireless transmission board, on-the-spot control display and centralized control display, the on-the-spot control display passes through communication cable and links to each other with centralized control display, on-the-spot respiratory nature dust collector is used for gathering on-the-spot respiratory nature dust concentration and turns into the signal of telecommunication to it, data wireless transmission board turns into dust concentration signal digital signal and goes out through wireless transmission, the on-the-spot control display is used for accepting wireless data, simultaneously with data display on the display screen, centralized control display is used for collecting and arranging the data of total system, and record display becomes the curve. The dust on-line monitoring system that this application provided can measure the air quality of an online operation environment, can clearly judge the comprehensive dust removal effect of various dust collecting facilities, and then provides the reference for the setting of all kinds of dust collecting equipment control parameter.
Description
Technical Field
The utility model relates to a real-time on-line monitoring field of particulate matter, in particular to nature of respiration dust on-line monitoring system based on electrostatic method.
Background
With the increase of national environmental governance and monitoring strength, dust monitoring in one-line operation environment has a plurality of monitoring methods, and at present, the following dust detection and monitoring methods are mainly adopted: weighing, light scattering, beta ray method.
The weighing method comprises the steps of adopting equipment with a filter membrane, carrying out sampling and air exhaust in a field of an online operation environment, separating dust particles by gas containing dust through the filter membrane, then drying and weighing to obtain the mass of the dust, measuring the volume of a sample through the field flow of the equipment, recording the sampling time, and obtaining the concentration of the dust through calculation and calibration. But the defects are that the real-time detection and monitoring can not be carried out, the monitoring process is complex, the working procedures are more, the time consumption is longer, and the requirements of automatic and continuous unmanned operation and data recording and transmission can not be met due to the influences of the dust-blocking efficiency of the filter membrane, the efficiency of the pump, the pressure loss during sampling, the air leakage of the sampling gas circuit, the error of the analytical balance and the like. And the measured result can only display a certain time, and the respiratory dust concentration and the total dust concentration of the dust cannot be displayed in the whole process.
The light scattering method is a phenomenon that light rays deviate from the original propagation direction through an uneven medium and are scattered in all directions, dust particles can generate scattered light when irradiated by light, the scattered light signal intensity is high when the particles are large, the scattered light signal intensity is in a direct proportion relation with the particle size of the particles, when the light waves pass through the air in which the particles are suspended, the characteristics of refraction, absorption and the like can be realized, energy dissipation is realized, and the light intensity is attenuated. And detecting the dust concentration according to the relation between the light scattering signal and the particle size of the particulate matter. The concentration is detected by the light scattering method according to the relation between the signal intensity of scattered light and the particle size of particulate matters, so that the measurement method is greatly influenced by field environmental factors, such as the pollution problem of an optical lens, the concentration of a measurement medium and the like, and the measurement data is inaccurate and limited.
The beta-ray method is characterized in that when beta-rays emitted by a beta source with constant intensity pass through a medium, beta particles and electrons in the medium collide with each other to lose energy and are absorbed, under the condition of low energy, the absorption degree depends on the quality of the medium and is not related to the granularity, the components, the color, the dispersion state and the like of dust particles, the beta-rays successively pass through clean filter paper (not collecting dust samples) and filter paper (the same filter paper) with dust samples, and the dust concentration in the environment is obtained according to the difference of the absorbed amounts of the beta-rays for 2 times. The beta-ray method can be used for continuously and rapidly measuring the dust concentration, the measurement range is wide, but the defect that heavy metal elements containing lead and the like cannot be measured is overcome, the measurement result is greatly influenced by dust components, and meanwhile, the displacement of sampling filter paper, a beta source, a sampling point, a sampling tube, the gas volume, water drops and the beta radiation intensity have the fluctuation phenomenon and the like, so that the dust concentration and the total dust concentration cannot be simply, rapidly, in real time and rapidly measured without influence.
SUMMERY OF THE UTILITY MODEL
The obtained data of dust monitoring for overcoming existence among the prior art is inaccurate, and monitoring efficiency is low to can only show the problem of single data, the utility model provides a respiratory nature dust on-line monitoring system based on electrostatic method.
The specific technical scheme is as follows:
the utility model provides a respiratory dust on-line monitoring system based on electrostatic method, is including consecutive scene respiratory dust collector, data wireless transmission board, field control display and the centralized control display, the field control display passes through communication cable and links to each other with the centralized control display, scene respiratory dust collector is used for gathering scene respiratory dust concentration and converts it into the signal of telecommunication, the data wireless transmission board is converted the dust concentration signal into digital signal and is sent away through wireless, the field control display is used for accepting wireless data, shows data on the display screen simultaneously, the centralized control display is used for gathering and arranging the data of total system to record and show into the curve.
Preferably, the on-site respiratory dust collector comprises a respiratory dust sensor, a data acquisition module a and a data storage module a which are connected in sequence.
Preferably, the field control display comprises a data processing module b, a data storage module b and a wiring module b which are connected in sequence, the data processing module b is connected with the display module b, and the wiring module is connected with the centralized control display through a communication cable.
Preferably, the on-site respiratory dust collector is further provided with a wireless antenna a, the on-site control display is further provided with a wireless antenna b, and the wireless antenna a and the wireless antenna b are both connected with the data wireless transmission board.
Preferably, the centralized control display comprises a data receiving module c, a computer module c, a software module c, a display module c and a data storage module c, and the data receiving module c, the software module c, the display module c and the data storage module c are respectively connected with the computer module c.
Compared with the prior art, the utility model following beneficial effect has:
(1) the application provides a respiratory dust on-line monitoring system based on electrostatic method can measure the air quality of an online operation environment, especially respiratory dust, can clearly judge the comprehensive dust removal effect of various dust removal facilities, especially to the dust collection efficiency who endangers the biggest respiratory dust, can regard as the reference of all kinds of dust collecting equipment control parameter. The monitoring system is used for detecting dust removal outlets of dust treatment equipment in the operating environment of an electric power and metallurgical system, and can also be used for testing PM7.07 dust in various dust operating places such as mines, cement plants, glass plants, quartz plants, textile plants and the like.
(2) The application provides a respiratory dust on-line monitoring system based on electrostatic method, mainly solves accuracy, simple high efficiency, real-time recording of dust measurement, on-the-spot/long-range centralized control show, do not receive influence such as ambient humidity, temperature, medium, each item stable performance is reliable, have all-weather 24 hours real-time on-line monitoring, especially can monitor that the aerodynamic diameter all is below 7.07 mu m, and the sampling efficiency of 5 mu m dust particles of aerodynamic diameter is 50% index.
Drawings
Fig. 1 is a block diagram of a respiratory dust online monitoring system based on an electrostatic method according to the present invention;
fig. 2 is a structural block diagram of a respiratory dust collector in an online respiratory dust monitoring system based on an electrostatic method according to the present invention;
fig. 3 is a block diagram of a field controller in an electrostatic method-based respiratory dust online monitoring system according to the present invention;
fig. 4 is a structural block diagram of a centralized control display in the respiratory dust online monitoring system based on the electrostatic method.
In the figure, 1-a site respiratory dust collector, 2-a data wireless transmission board, 3-a site control display, 4-a centralized control display, 11-a respiratory dust sensor, 12-a data acquisition module a, 13-a data storage module a, 14-a wireless antenna a, 21-a data processing module b, 22-a data storage module b, 23-a wiring module b, 24-a display module b, 25-a wireless antenna b, 41-a data receiving module c, 42-a computer module c, 43-a software module c, 44-a display module c, 45-a data storage module c.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The utility model discloses a respiratory dust on-line monitoring system based on electrostatic method, as shown in fig. 1, including consecutive on-the-spot respiratory dust collector 1, data wireless transmission board 2, on-the-spot control display 3 and centralized control display 4, the on-the-spot control display passes through communication cable and links to each other with centralized control display 4, on-the-spot respiratory dust collector 1 is used for gathering on-the-spot respiratory dust concentration and changes it into the signal of telecommunication, data wireless transmission board 2 changes dust concentration signal into digital signal and goes out through wireless transmission, on-the-spot control display 3 is used for accepting wireless data, simultaneously with data display on the display screen, centralized control display 4 is used for collecting and arranging the data of total system, and record display becomes the curve.
As shown in fig. 2, the on-site respiratory dust collector comprises a respiratory dust sensor 11, a data collection module a12 and a data storage module a13 which are connected in sequence. As shown in fig. 3, the field control display 3 includes a data processing module b21, a data storage module b22 and a wiring module b23 connected in sequence, the data processing module b is connected with a display module b24, and the wiring module is connected with the centralized control display 4 through a communication cable. The on-site respiratory dust collector is also provided with a wireless antenna a14, the on-site control display 3 is also provided with a wireless antenna b25, and the wireless antenna a14 and the wireless antenna b25 are both connected with the data wireless transmission plate 2. As shown in fig. 4, the centralized control display 4 includes a data receiving module c41, a computer module c42, a software module c43, a display module c44 and a data storage module c45, and the data receiving module c41, the software module c43, the display module c44 and the data storage module c45 are respectively connected to the computer module c 42.
The application provides a respiratory dust on-line monitoring system based on static method mainly divide into three processes:
sampling by the on-site respiratory dust sensor 11: the on-site respirable dust sensor 11 utilizes the technical principle of electrostatic measurement, an internal air exhaust fan samples dust-containing gas at an equipment outlet in real time, dust particles in the dust-containing gas generate electric signals when passing through a sensitive area formed by an electrostatic measurement mechanism, the electric signals are converted into corresponding data signals at the same time, the weight concentration of dust PM7.07 is obtained through amplification and data operation processing, the data is subjected to internal A/D conversion and is transmitted to a wireless receiving module of an on-site control display 3 by utilizing a data wireless transmission system, and the dust concentration data is displayed on site.
And (3) controlling and displaying data on site: the field control display 3 receives data sent by the dust sensor by using the wireless receiving module, and transmits the data to the centralized control display large screen by using the internal wireless transmission module after operation processing and data storage.
Data remote centralized control display: data displayed by different field controls are input into a data remote centralized control display screen in a wireless or wired mode, and the data are calculated, stored and displayed to complete a dust online monitoring system project. As shown in fig. 4, the data remote centralized control display can perform centralized control on data of several field control displays 3.
This application adopts the international leading electrostatic measurement technique, and application electrostatic measurement technical principle, non-contact dust test mode carry out real-time sampling to the dirty gas of equipment export with air exhaust fan, and the dust particle in the dirty gas produces the signal of telecommunication when the sensitive zone time that electrostatic measurement mechanism formed, converts the signal of telecommunication into corresponding data signal simultaneously, obtains dust PM 7.07's weight concentration through enlarging and data arithmetic processing. With empirically reliable electrostatic techniques, charge transfer occurs between the dust and the sensor rod through their interaction. It is this small movement that provides the signal that is monitored electrically. If the type of particulate matter remains the same, even if particles adhere to the sensor, the measurement is not affected and the signal generated will be proportional to the flow rate. Practice shows that the solid flow measurement method is high in precision and small in maintenance amount, can monitor the field dust concentration on line in real time, can monitor the air quality index of the field operation environment on line, particularly the index of respiratory dust (called dust for short: dust particles which can enter alveolus and have aerodynamic diameter of below 7.07 mu m and sampling efficiency of dust particles with aerodynamic diameter of 5 mu m is 50%), and can clearly judge the comprehensive dust removal effect of various dust removal facilities, particularly the dust removal efficiency of respiratory dust with the largest harm.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (5)
1. The utility model provides a respiratory dust on-line monitoring system based on static method which characterized in that: including consecutive scene respiratory dust collector, data wireless transmission board, field control display and centralized control display, the field control display passes through communication cable and links to each other with centralized control display, scene respiratory dust collector is used for gathering scene respiratory dust concentration and turns into it the signal of telecommunication, data wireless transmission board changes the dust concentration signal into digital signal and sends away through wireless, the field control display is used for accepting wireless data, shows data on the display screen simultaneously, centralized control display is used for collecting and arranges the data of total system to the record shows into the curve.
2. The system for on-line monitoring of respirable dust based on the electrostatic method as claimed in claim 1, wherein: the on-site respiratory dust collector comprises a respiratory dust sensor, a data acquisition module a and a data storage module a which are sequentially connected.
3. The system for on-line monitoring of respirable dust based on the electrostatic method as claimed in claim 2, characterized in that: the field control display comprises a data processing module b, a data storage module b and a wiring module b which are sequentially connected, wherein the data processing module b is connected with the display module b, and the wiring module is connected with the centralized control display through a communication cable.
4. The system for on-line monitoring of respirable dust based on the electrostatic method as claimed in claim 3, wherein: the on-site respirable dust collector is further provided with a wireless antenna a, the on-site control display is further provided with a wireless antenna b, and the wireless antenna a and the wireless antenna b are both connected with the data wireless transmission plate.
5. The system for on-line monitoring of respiratory dust based on electrostatic method as claimed in claim 4, wherein: the centralized control display comprises a data receiving module c, a computer module c, a software module c, a display module c and a data storage module c, wherein the data receiving module c, the software module c, the display module c and the data storage module c are respectively connected with the computer module c.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020541815.1U CN214408569U (en) | 2020-04-13 | 2020-04-13 | Respiratory dust on-line monitoring system based on electrostatic method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020541815.1U CN214408569U (en) | 2020-04-13 | 2020-04-13 | Respiratory dust on-line monitoring system based on electrostatic method |
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| CN214408569U true CN214408569U (en) | 2021-10-15 |
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| CN202020541815.1U Expired - Fee Related CN214408569U (en) | 2020-04-13 | 2020-04-13 | Respiratory dust on-line monitoring system based on electrostatic method |
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