Low-cost bag-type dust collector intelligent leakage detection monitoring system
Technical Field
The invention relates to the field of air purification, in particular to an intelligent leakage detection monitoring system of a low-cost bag-type dust remover.
Background
Along with the rapid development of national economy, the importance of environmental protection is increasingly prominent. The bag-type dust remover is widely used in the world, and the emission concentration of solid particles of the dust removing system adopting the bag-type dust removing technology is far lower than that of the dust removing system adopting other dust removing technologies.
The main component of the filter system of the bag type dust collector is a cloth bag. In the daily use process, the filter bag can be perforated due to the aging and abrasion of the cloth bag, and leakage can occur. The flue gas filtered by the bag type dust collector can be directly discharged into the atmosphere through a chimney, and if the filter bag of the bag type dust collector leaks, the environment is polluted. A dust chamber may have dozens or even hundreds of filter bags, and when the dust concentration of the air outlet of one chamber or the whole dust collector exceeds the standard, the filter bags of the chamber or the whole dust collector need to be checked. The conventional method for detecting the leakage of the cloth bag comprises the following steps: the differential pressure method detection and the manual observation method of the dust remover are adopted, but the judgment of whether the leakage occurs is low in precision; the method for installing the dust concentration transmitter on the multiple bin bodies can realize accurate diagnosis of filtration, has strong real-time performance, but has huge engineering quantity and high cost; the fluorescent powder method can realize accurate diagnosis of filtration, but has poor real-time performance and small engineering quantity.
Disclosure of Invention
The invention aims to overcome the existing monitoring defects of the prior bag-type dust remover and provides an intelligent leakage detection monitoring system of the low-cost bag-type dust remover. According to the invention, the particle concentration at each bag outlet is monitored by the low-cost particle concentration acquisition module, and the information can be obtained by wirelessly sending data to the equipment terminal through the console, so that an operator can know the normal operation condition of the bag-type dust collector in real time, and if abnormity occurs, the operator can quickly position and overhaul, thereby saving a large amount of manpower and material resources.
In order to achieve the purpose, the technical scheme is that the intelligent leakage detection monitoring system of the bag-type dust collector is characterized in that dust-containing gas enters a dust removing chamber from an air inlet, a bag is arranged in the dust removing chamber, and dust is collected under the actions of screening, inertia, adhesion, diffusion, static electricity and the like generated when the dust passes through filter cloth. Thereby reach the purpose of air-purifying, a plurality of sack are fixed in on the fixed stop, and the gas after the export purification of sack lets in the atmosphere through the air outlet. The fixed baffle is provided with a plurality of particulate matter concentration acquisition modules, and the particulate matter concentration acquisition modules utilize tinyThe scattering principle of the particles to the light forms scattering to the light when the tiny particles pass through the detection hole. And one part of the scattered light passes through the optical axis and is gathered to the photosensitive element through the lens, and the photosensitive element converts the optical signal into an electric signal to be output, so that the concentration of the particles in the detected air is obtained. Particulate matter concentration acquisition module has 4 pins VCC, GND, RXD, TXD, and wherein VCC and GND are the power supply pin, and RXD is UART data receiving port, and TXD is UART data transmitting port for the air quality after the monitoring purifies to this dust collection efficiency who examines the sack, 4 pins of particulate matter concentration acquisition module pass through the air cable and link to each other with equipment control box. The equipment control box is fixed in the dust removal distribution box, a power adapter, an MCU module, a 4G signal transmission module and an extension antenna are arranged in the equipment control box, the power adapter introduces 220V power from the dust removal control box and converts the power into 5V power which respectively supplies power for the MCU module and the 4G signal transmission module, the MCU module is connected with a wire of a particulate matter concentration acquisition module transmitted by an aviation cable, VCC and GND power pins can be directly connected with corresponding interfaces on the MCU module by utilizing DuPont wires, RXD on the particulate matter concentration acquisition module is connected with TXD on the MCU, the TXD on the particulate matter concentration acquisition module is connected with RXD on the MCU to realize data communication, the MCU module is used for reading dust concentration data transmitted by the particulate matter concentration acquisition module, the MCU module is connected with the 4G signal transmission module through a signal converter, the signal converter converts the data of the MCU module into data which can be analyzed by, in order to prevent electrostatic shielding signals in the metal cavity, the 4G signal transmission module is connected with the extension antenna, and the collected particulate matter concentration data is uploaded to the cloud platform, so that a user can use a mobile phone or a computer or other networking terminals to read the particulate matter concentration data on the cloud platform. When the user monitors that the concentration of the particulate matters gradually increases, for example, when the dust concentration measured by a certain particulate matter concentration acquisition module exceeds 30 mu g/m3And reminding workers to go to corresponding sensor positions before to overhaul whether the adjacent cloth bags have problems. The rapid positioning is realized, a large amount of manpower and material resources are saved, and the real-time monitoring is realized.
In order to avoid the dust remover wire casing too much, can cancel the air cable, the inside particulate matter concentration acquisition module of dust remover also can be wireless, can realize the wireless data acquisition of particulate matter concentration based on LORA spread spectrum technique. The particulate matter concentration acquisition module comprises 5V battery, particulate matter sensor, LORA sub-node. Through actual engineering test, LORA wireless transmission data is stable and reliable, supports low-power consumption power saving mode, and battery power supply occasion, a section of 5V battery can work for more than 10 years. 5V battery is particulate matter sensor and the power supply of LORA child node, the particulate matter sensor passes to the LORA child node with the data of gathering the LORA child node passes through the transparent transmission of wireless serial ports UART for the MCU module, and this place MCU module is LORA father's node.
The invention has the beneficial effects that:
the invention realizes real-time intelligent monitoring, can monitor each monitoring point in real time, enables workers to know the dust-containing condition of air particles purified by the bag-type dust remover at any time, can accurately position when air at the air outlet is abnormal, reminds the workers to go to local maintenance, saves a large amount of manpower and material resources, and is economical, practical and good in stability.
Drawings
FIG. 1 is a schematic view of a leak detection monitoring structure of a bag-type dust collector;
fig. 2 is a particulate matter concentration acquisition module floor plan: (a) wired data acquisition (b) wireless data acquisition;
fig. 3 is a block diagram of a wireless transmission system;
FIG. 4 is a schematic diagram of particle concentration wireless data acquisition based on the LORA spread spectrum technology;
reference numerals: 1 air intake, 2 collection dirt funnel, 3 sack, 4 clean rooms, 5 fixed stop, 6 particulate matter concentration acquisition module, 7 air cable, 8 extension antennas, 9 dust removal block terminals, 10 equipment control box, 11 air outlets, 12 power adapter, 13MCU module, 14 communication data converter, 154G signal transmission module, 16 cloud platform, 17 networking terminal
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
example 1:
as shown in fig. 1Dust-containing gas enters a dust removal chamber 4 from an air inlet 1, a cloth bag 3 is arranged in the dust removal chamber 4, and dust is collected under the action of screening, inertia, adhesion, diffusion, static electricity and the like generated when passing through filter cloth. Therefore, the purpose of purifying air is achieved, the cloth bags 3 are fixed on the fixed baffle 5, and the purified air from the cloth bag outlet is introduced into the atmosphere through the air outlet. The fixed baffle 5 is provided with a plurality of particulate matter concentration acquisition modules 6, and the arrangement mode is shown in figure 2. The particulate matter concentration acquisition module 6 utilizes the scattering principle of light by the tiny particulate matter, and forms scattering to the light when the tiny particulate matter passes through the detection hole. And one part of the scattered light passes through the optical axis and is gathered to the photosensitive element through the lens, and the photosensitive element converts the optical signal into an electric signal to be output, so that the concentration of the particles in the detected air is obtained. Particulate matter concentration acquisition module 6 has 4 pins VCC, GND, RXD, TXD, and wherein VCC and GND are the power supply pin, and RXD is the UART data receiving port, and TXD is UART data transmitting port for the air quality after the monitoring purifies to this dust collection efficiency who examines the sack, particulate matter concentration acquisition module's 4 pins pass through air cable 7 and link to each other with equipment control box 10. The equipment control box 10 is fixed in the dedusting distribution box, a power adapter 12 is arranged in the equipment control box 10, an MCU module 13, a communication data converter 14, a 4G signal transmission module 15 and an extension antenna 8 are arranged in the equipment control box 10, the power adapter 12 introduces 220V power from the dedusting distribution box 9 and converts the 220V power into 5V power to respectively supply power to the MCU module 13 and the 4G signal transmission module 15, the MCU module 13 is connected with an electric wire of a particulate matter concentration acquisition module transmitted by an aviation cable, VCC and GND power pins can be directly connected with corresponding interfaces on the MCU module by utilizing a DuPont wire, RXD on the particulate matter concentration acquisition module 6 is connected with TXD on an MCU, the TXD on the particulate matter concentration acquisition module 6 is connected with RXD on the MCU module 13 to realize data communication, the MCU module 13 is used for reading dust concentration data transmitted by the particulate matter concentration acquisition module 6, the MCU module, the signal converter converts the data of the MCU module 13 into data which can be analyzed by the 4G signal transmission module 15, in order to prevent electrostatic shielding signals in the metal cavity, the 4G signal transmission module is connected with the extension antenna 8, and collected particulate matter concentration data are uploaded to cloudThe platform 16, the user can use networking terminal 17 such as cell-phone or computer to read the particulate matter concentration data on the cloud platform. When the user monitors that the concentration of the particulate matters gradually increases, for example, when the dust concentration measured by a certain particulate matter concentration acquisition module exceeds 30 mu g/m3And the staff is reminded to go to correspond to the position of the sensor before to overhaul whether an adjacent cloth bag is out of order, so that the quick positioning is realized, a large amount of manpower and material resources are saved, and the real-time monitoring is realized.
The particulate matter concentration acquisition module can adopt a YW-51GJ dust sensor, the power adapter can adopt a 220 v-to-5 v switching power supply, the MCU module can adopt an STM32F103C8T6 singlechip, the communication data converter can adopt a TTL-to-485 module, and the 4G signal transmission module can adopt a 4G DTU with the model of HD-D603.
Example 2:
in order to avoid the dust remover wire casing too much, can cancel aviation cable 7, the inside particulate matter concentration acquisition module of dust remover also can be wireless, can realize the wireless data acquisition of particulate matter concentration based on LORA spread spectrum technique. As shown in fig. 4, the particulate matter concentration acquisition module 6 is composed of a 5V battery, a particulate matter sensor, and a LORA sub-node. Through actual engineering test, LORA wireless transmission data is stable and reliable, supports low-power consumption power saving mode, and battery power supply occasion, a section of 5V battery can work for more than 10 years. 5V battery is particulate matter sensor and the power supply of LORA child node, the particulate matter sensor passes to the LORA child node with the data of gathering the LORA child node passes through the transparent transmission of wireless serial ports UART for MCU module 13, and MCU module 13 is the LORA father node here.
The 5V battery can adopt the 5V lithium cell that steps up, particulate matter sensor can adopt YW-51GJ dust sensor, LORA child node and LORA father node can adopt the model to be the high-speed low-power consumption high performance LORA wireless module of HD-M805.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.