CN109999583A - A kind of bag-type dust removing system and method for diagnosing faults based on cloud platform - Google Patents

Abstract

Bag-type dust removing system based on cloud platform of the invention, including sack cleaner, data collection system, monitoring and controlling terminal, control centre, Cloud Server and intelligent mobile terminal；Sack cleaner is made of blower, filtering cabin, net gas storehouse, ash cellar and air accumulator, and data collection system acquires the signal of each sensor on sack cleaner.The method for diagnosing faults of bag-type dust removing system of the invention, comprising: a) deduster data acquire；B) air quantity judges；C) temperature judges；D) dust concentration judgement up to standard；E) filter bag dust concentration judges；F) filter bag pressure difference judges；G) dust material position judges.Bag-type dust removing system of the invention, Cloud Server carries out fault diagnosis by the processing to sensing data, and carries out the alarm of abnormal conditions, convenient for the management and maintenance of deduster, reduces downtime, improves reliability and efficiency.

Description

A bag filter system and fault diagnosis method based on cloud platform

technical field

The invention relates to a bag-type dust removal system and a fault diagnosis method, more specifically, to a bag-type dust removal system and a fault diagnosis method based on a cloud platform.

Background technique

The bag filter has simple structure, high efficiency, stable operation and flexible use. It has been widely used in industries with serious dust pollution such as cement, steel, non-ferrous metals, electric power, machinery, chemical industry, and waste incineration. It has become my country's air pollution control, especially Mainstream dust removal equipment for PM2.5 fine particle emission control. Due to the high degree of specialization of the dust collector, it is the core key equipment in the flue gas treatment process equipment. Once a problem occurs, it will lead to a complete shutdown of the entire system and even cause an environmental accident. Therefore, the dust collector needs to have high reliability.

During the operation of the bag filter, there are many parameters that characterize whether it is in normal working state, such as the operation of the fan, filter chamber, filter bag and clean air chamber. The operation of the fan is the premise of the normal operation of the entire filter. The silo, filter bag and clean air silo determine the dust removal effect. Only by collecting the corresponding parameters, can the current operating status of the dust collector be known, and according to the collected parameter information, the fault can be judged and corresponding measures can be taken to solve the fault problem. . At present, large-scale bag-type dust removal systems are mostly composed of several dust collectors in parallel, which are scattered and far away, which is inconvenient for effective analysis and control of the system, poor real-time maintenance of system faults, and lack of real-time monitoring and fault diagnosis of dust removal system conditions. .

SUMMARY OF THE INVENTION

In order to overcome the shortcomings of the above technical problems, the present invention provides a bag-type dust removal system and a fault diagnosis method based on a cloud platform.

The bag-type dust removal system based on the cloud platform of the present invention includes a bag-type dust collector, a data acquisition system, a monitoring and control terminal, a control center, a cloud server and an intelligent mobile terminal; It is composed of ash bin and air storage tank. There are multiple filter bags in the filter bin. The air inlet of the filter bin is connected with the space to be dedusted. The ash bin is located below the filter bin. The air outlet of the air silo is communicated with the air inlet of the fan through the pipeline, and the air outlet of the air storage tank is communicated with the inner cavity of the filter bag through the pipeline. Sensor, temperature sensor, outlet air volume sensor is arranged on the air outlet of the fan; inlet air volume sensor, dust concentration sensor and temperature sensor are arranged on the air inlet of the filter chamber, and dust concentration sensor and temperature sensor are arranged on the air outlet of the clean air chamber , Each filter bag is provided with an internal and external pressure difference sensor and a dust concentration sensor, and a material level sensor for detecting the amount of falling dust is provided in the ash bin;

The data acquisition system communicates with the monitoring and control terminal through the CAN bus, and the monitoring and control terminal and the intelligent mobile terminal communicate with the control center and cloud server through the wireless network; The monitoring and control terminal sends to the control center and the cloud server, the cloud server and the control center store and process the received signals, and the monitoring and control terminal receives the control instructions from the cloud server and the control center and controls the actuator of the bag filter , to control the working state of the bag filter.

The bag-type dust removal system based on the cloud platform of the present invention includes an air distribution box, the air outlet of the air storage tank is connected with the air inlet of the air distribution box through a pressure pipeline, and the air outlet of the air distribution box is connected to each filter bag through a blowing pipe. The inner cavity of the air distribution box is connected, and an electromagnetic pulse valve is arranged on the air distribution box to control the on-off state of the pressure pipe and the blowing pipe.

In the bag-type dust removal system based on the cloud platform of the present invention, the clean air silo is provided with an on-off valve that controls the on-off state of the air outlet.

In the bag-type dust removal system based on the cloud platform of the present invention, a conveying system for conveying the falling dust is arranged below the ash bin, and an ash discharge valve is arranged on the conveying system.

The fault diagnosis method of the bag-type dust removal system based on the cloud platform of the present invention is characterized in that, it is realized by the following steps:

a). Dust collector data acquisition. The data acquisition system collects the fan speed, current, outlet air volume, and temperature signals through sensors, and collects the inlet air volume, dust concentration, and temperature signals at the air inlet of the filter chamber. The dust concentration in the inner cavity of the filter bag is collected, the dust concentration and temperature of the air outlet of the clean air silo are collected, and the material level of the ash silo is collected; the collected signals of each sensor are sent to the cloud server; b). The data determines whether the outlet air volume of the fan and the inlet air volume of the filter box are equal or the difference is within a reasonable range. If the inlet and outlet air volumes are not equal or the error is not within a reasonable range, it indicates that there is leakage in the dust collector, and a gas leakage alarm message will be sent to Control center and intelligent mobile terminal to inform management personnel; c). Temperature judgment, the cloud server judges whether the temperature of the gas entering the filter chamber is too high according to the temperature obtained at the air inlet of the filter chamber, and according to the temperature of the air outlet of the clean air chamber Determine whether the temperature of the gas entering the fan is too high. If the temperature is too high, stop the operation of the entire filter by cutting off the power supply of the fan, and send an alarm message of high gas temperature to the control center and smart mobile terminal for work. Personnel conduct on-site inspection and eliminate the alarm of high gas temperature; d). Judgment that the dust concentration meets the standard, the cloud server judges whether the dust concentration in the gas discharged from the filter meets the standard according to the obtained dust concentration at the air outlet of the clean gas silo, and if it does not meet the standard, Then send the dust filter unqualified information to the control center and the intelligent mobile terminal to inform the management personnel; e). Judging the dust concentration of the filter bag, the cloud server judges the dust concentration in the inner cavity of each filter bag according to the obtained Whether the dust concentration in the gas is up to the standard, if not, the filter bag fault information will be sent to the control center and the intelligent mobile terminal, and the number of the faulty filter bag will be given, so that the staff can take corresponding measures; f). Filter bag pressure difference Judgment, the cloud server obtains the internal and external pressure difference of each filter bag, if the internal and external pressure difference is equal or basically equal, it indicates that the filter bag is damaged, and sends the filter bag damage information to the control center and the smart mobile terminal, and gives The number of the damaged filter bag, so that the staff can take corresponding measures; if the pressure difference between the inside and outside of the filter bag exceeds the set threshold, there is too much dust attached to the filter screen of the surface filter bag, and the air storage tank will be opened to carry out the filter bag. Blowing instructions, and send the control instructions to the monitoring and control terminal, and the monitoring and control terminal controls the filter to blow the filter bag; g). The dust level is judged, and the cloud server is based on the acquired material level of the ash silo. information to judge whether the dust level in the ash bin is too high, if the material level is too high, send an instruction to turn on the conveying system to transport the dust out to the monitoring and control terminal, and the monitoring and control terminal controls the conveying system to transport the dust .

The beneficial effects of the present invention are: the bag filter system based on the cloud platform of the present invention, through the sensor set on the bag filter, realizes the data acquisition system to the fan speed, current, outlet air volume, temperature signal, filter bin The inlet air volume, dust concentration and temperature signal at the air inlet, the internal and external pressure difference of the filter bag and the dust concentration in the inner cavity of the filter bag, the dust concentration and temperature at the air outlet of the clean air silo, and the collection of the material level information of the ash silo; The data acquisition system uploads the collected signals of each sensor to the cloud server and the control center. The cloud server monitors the operating state of the filter according to the received data, and through the processing of the sensor data, it performs fault diagnosis and alarms for abnormal conditions. , to facilitate the management and maintenance of the dust collector, reduce downtime, improve reliability and efficiency.

Description of drawings

Fig. 1 is the structural representation of bag filter in the present invention;

Fig. 2 is the principle diagram of the bag type dust removal system based on the cloud platform of the present invention;

3 is a schematic diagram of the information collected by the data collection system in the present invention;

FIG. 4 is a schematic diagram of fault diagnosis of the bag-type dust removal system based on the cloud platform of the present invention.

In the picture: 1 air tank, 2 pressure pipeline, 3 electromagnetic pulse valve, 4 air box, 5 blowing pipe, 6 nozzle, 7 clean air chamber, 8 opening and closing valve, 9 filter chamber, 10 filter bag, 11 ash chamber , 12 ash discharge valve, 13 conveying system, 14 airflow distribution device, 15 air duct, 16 fan; 17 data acquisition system, 18 monitoring and control terminal, 19 control center, 20 cloud server, 21 intelligent mobile terminal.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1, a schematic structural diagram of the bag filter in the present invention is given, which consists of a fan 16, a filter bin 9, a plurality of filter bags 10, an ash bin 11, a clean air bin 7, a gas storage tank 1, a The air box 4 and the conveying system 13 are composed. The filter bin 9 is formed by a cylindrical cylinder. The bottom of the filter bin 9 is an inverted conical ash bin 11. The gas to be filtered enters the filter chamber 9 . A conveying system 13 is arranged below the ash bin 11 , and an ash discharge valve 12 is arranged on the conveying system 13 . When the dust level in the ash bin 11 is too high, the dust is transported out through the conveying system 13 . The clean air chamber 7 is located above the filter chamber 9, the filter bag 10 is fixed in the filter chamber 9 in a vertical state, the upper end of the filter bag 10 extends into the clean air chamber 7, and the inner cavity of the filter bag 10 is communicated with the clean air chamber 7 , so that the gas filtered by the filter bag 10 enters the clean air chamber 7 . The filter bin 9 is also provided with an airflow distribution device 14 composed of baffles, so that the incoming gas to be filtered is evenly distributed to each filter bag 10 for filtration.

The air outlet of the shown clean air silo 7 is connected with the air inlet of the fan 16 through the air induction pipe 15, so that under the action of the fan 16, the flow of the gas from the outside, the filter silo 9 and the clean air silo 7 is realized in turn, so as to realize the Filtration of dust in gas. The clean air chamber 7 is also provided with an on-off valve 8 . When the air tank 1 blows the filter bag 10 , the on-off valve 8 closes the air outlet of the clean air chamber 7 .

The air outlet of the air storage tank 1 is communicated with the air inlet of the air distribution box 4 through the pressure pipeline 2, and the air outlet of the air distribution box 4 is communicated with the inner cavity of each filter bag 10 through the injection pipe 5. The air distribution box 4 is provided with There is an electromagnetic pulse valve 3 to control the on-off of the blowing pipe 5 . With long-term use, dust will adhere to the outer surface of the filter screen of the filter bag 10, and if it is not cleaned in time, the filtering efficiency of the filter bag 10 will be affected. When purging the filter bag 10, close the air outlet of the clean air chamber 7, and then open the electromagnetic pulse valve 3, so that the pressure gas in the air storage tank 1 enters the inner cavity of the filter bag 10, and enters from the inner cavity to the inner cavity of the filter bag 10. The filter bag 10 is around the periphery of the filter bag 10 and is discharged through the air inlet of the filter bin 9 .

As shown in FIG. 3 , a schematic diagram of the information collected by the data acquisition system in the present invention is given. The fan 16 is provided with a rotational speed sensor, a current sensor, and a temperature sensor for collecting its operating state parameters, and the air outlet of the fan is provided with a The outlet air volume sensor; the inlet air volume sensor, the dust concentration sensor and the temperature sensor are arranged on the air inlet of the filter bin 9, the dust concentration sensor and the temperature sensor are arranged on the air outlet of the clean air bin 7, and each filter bag 10 is provided with a There are internal and external pressure difference sensors and dust concentration sensors, and the ash bin is provided with a material level sensor that detects the amount of falling dust. The data acquisition system 17 collects the signals of each sensor.

As shown in FIG. 2, the schematic diagram of the bag filter system based on the cloud platform of the present invention is given, and FIG. 4 is the fault diagnosis principle diagram of the bag filter system based on the cloud platform of the present invention. The system 17, the monitoring and control terminal 18, the control center 19, the cloud server 20 and the intelligent mobile terminal 21 are composed. The data acquisition system 17 communicates with the monitoring and control terminal 18 via the CAN bus. The wireless network communicates with the control center 19 and the cloud server 20. The data acquisition system 17 sends the collected sensor data on the filter to the control center 19 and the cloud server 20 through the monitoring and control terminal 18. The cloud server 20 filters the received data. The working state parameters of the filter are stored, calculated and processed to realize the fault diagnosis of the filter, and the monitoring data and diagnosis results can be sent to the control center 19 and the intelligent mobile terminal 21, so that the relevant personnel can pass the control center 19 and the intelligent mobile terminal. The terminal obtains the working status information of the filter. In the cloud server 20, the staff can issue control commands to the filter through the intelligent mobile terminal 21 and the control center 19, and the control commands are sent to the monitoring and control terminal 18 through the cloud server 20, and the monitoring and control terminal 18 controls the execution mechanism to execute Action accordingly.

The fault diagnosis method of the bag-type dust removal system based on the cloud platform of the present invention is realized by the following steps:

a). Dust collector data collection. The data collection system 17 collects the rotational speed, current, outlet air volume, and temperature signals of the fan 16 through sensors, and collects the inlet air volume, dust concentration, and temperature signals at the air inlet of the filter bin 9. The internal and external pressure difference and the dust concentration in the inner cavity of the filter bag are collected, the dust concentration and temperature of the air outlet of the clean air silo 7 are collected, and the material level of the ash silo 11 is collected; and the collected signals of each sensor are sent to the cloud server 20;

b). Air volume judgment. The cloud server judges whether the outlet air volume of the fan and the inlet air volume of the filter chamber are equal or within a reasonable range according to the uploaded data. If the inlet and outlet air volumes are not equal or the error is not within a reasonable range, it indicates that the dust collector If there is a leakage phenomenon, the gas leakage alarm information will be sent to the control center and the intelligent mobile terminal, so as to inform the management personnel;

c). Temperature judgment, the cloud server judges whether the temperature of the gas entering the filter box is too high according to the temperature at the air inlet of the filter box 9, and judges whether the temperature of the gas entering the fan is too high according to the temperature of the air outlet of the clean gas box, If the temperature is too high, stop the operation of the entire filter by cutting off the power supply of the fan, and send out the gas temperature high alarm information to the control center and the intelligent mobile terminal, so that the staff can investigate and eliminate the gas temperature high alarm on the spot;

d). Judgment of the dust concentration reaching the standard. The cloud server judges whether the dust concentration in the gas discharged from the filter meets the standard according to the obtained dust concentration at the air outlet of the clean air silo. Smart mobile terminals to inform managers;

e). Judgment of the dust concentration of the filter bag. The cloud server judges whether the dust concentration in the filtered gas meets the standard according to the obtained dust concentration in the inner cavity of each filter bag. If it does not meet the standard, it will send a filter bag fault message to Control center and intelligent mobile terminal, and give the number of the faulty filter bag, so that the staff can take corresponding measures;

f). Judgment of the filter bag pressure difference, the cloud server will obtain the inner and outer pressure difference of each filter bag. If the inner and outer pressure difference is equal or basically equal, it indicates that the filter bag is damaged, and the filter bag damage information will be sent to the control center and Smart mobile terminal, and give the number of the damaged filter bag, so that the staff can take corresponding measures;

If the pressure difference between the inside and outside of the filter bag exceeds the set threshold, too much dust is attached to the filter screen of the surface filter bag, and an instruction to open the air storage tank to blow the filter bag is issued, and the control instruction is sent to the monitoring and control system. Control terminal, the monitoring and control terminal controls the filter to blow the filter bag;

g). Judgment of dust material level, the cloud server judges whether the dust material level in the ash silo is too high according to the obtained material level information of the ash silo. To the monitoring and control terminal, the monitoring and control terminal controls the conveying system to transport the dust.

Claims (5)

1. a kind of bag-type dust removing system based on cloud platform, including sack cleaner, data collection system (17), monitoring and control Terminal (18), control centre (19), Cloud Server (20) and intelligent mobile terminal；Sack cleaner is by blower (16), filtering cabin (9), net gas storehouse (7), ash cellar (11) and air accumulator (1) form, and are provided with multiple filter bags (10), the air inlet of filtering cabin in filtering cabin Mouth is communicated with to dedusting space, and ash cellar is located at the lower section of filtering cabin, and the air outlet of filter bag is communicated with net gas storehouse, the outlet air of net gas storehouse Mouth is connected with the air inlet of blower by the road, and the gas outlet of air accumulator is communicated with the inner cavity of filter bag by the road；It is characterized by: The speed probe to the acquisition of its running state parameter, current sensor, temperature sensor are provided on blower (16), blower Outlet air flow sensor is provided on air outlet；Entrance air flow sensor, dust concentration are provided on the air inlet of filtering cabin (9) Sensor and temperature sensor are provided with sensor of dust concentration, temperature sensor, each filter on the air outlet of net gas storehouse (7) It is provided with inside and outside differential pressure sensor and sensor of dust concentration on bag (10), is provided in ash cellar and the amount of dust fallen into is carried out The level sensor of detection；

Data collection system (17) is communicated through CAN bus and monitoring with controlling terminal (18), monitoring and controlling terminal (18) and Intelligent mobile terminal (21) is communicated through wireless network and control centre (19) and Cloud Server (20)；Data collection system acquisition The signal of each sensor on sack cleaner, and control centre and Cloud Server, cloud service are sent to controlling terminal through monitoring Device and control centre store and process received signal, and monitoring receives Cloud Server and control centre with controlling terminal Control instruction simultaneously controls the executing agency of sack cleaner, to control the working condition of sack cleaner.

2. the bag-type dust removing system according to claim 1 based on cloud platform, it is characterised in that: including dividing gas tank (4), store up The gas outlet of gas tank (1) is connected through pressure pipeline (2) with the air inlet of gas tank is divided, and divides the gas outlet of gas tank through injection tube (5) It communicates with the inner cavity of each filter bag (10), divides on gas tank to be provided with the on off operating mode of pressure pipeline and injection tube is controlled Electromagnetic impulse valve (3).

3. the bag-type dust removing system according to claim 1 or 2 based on cloud platform, it is characterised in that: the net gas storehouse (7) On be provided with the open and close valve (8) controlled the switch state of its air outlet.

4. the bag-type dust removing system according to claim 1 or 2 based on cloud platform, it is characterised in that: the ash cellar (11) Lower section be provided with the transportation system (13) transported to the dust fallen, be provided with unloading valve (12) in transportation system.

5. a kind of method for diagnosing faults based on the bag-type dust removing system described in claim 1 based on cloud platform, feature exist In being realized by following steps:

A) deduster data acquire, and data collection system (17) acquires the revolving speed of blower (16) through sensor, electric current, goes out one's intention as revealed in what one says Amount, temperature signal, the entrance air quantity, dust concentration, temperature signal of acquisition filter storehouse (9) air inlet, acquisition filter bag (10) The dust concentration of inside and outside differential pressure and filter bag inner cavity acquires the dust concentration and temperature of net gas storehouse (7) air outlet, acquires ash cellar (11) Material position；And the signal of each sensor of acquisition is sent to Cloud Server (20)；

B) air quantity judges, Cloud Server judges the outlet air quantity of blower according to the data of upload and the entrance air quantity of filtering cabin is No equal or difference in the reasonable scope, if disengaging air quantity is unequal or error not in the reasonable scope, show deduster There are leakage phenomenons, then issue gas leakage warning information to control centre and intelligent mobile terminal, to inform administrative staff；

C) temperature judges, Cloud Server judges the gas into filtering cabin according to the temperature of filtering cabin (9) air inlet of acquisition Whether temperature is excessively high, and whether the gas temperature for entering blower according to the judgement of the temperature of net gas storehouse air outlet is excessively high, if there is The excessively high situation of temperature stops the operation of entire filter by cutting off the power supply of blower, and issues the excessively high report of gas temperature Alert information is to control centre and intelligent mobile terminal, so that staff's dam site investigation removes the excessively high alarm of gas temperature side by side；

D) dust concentration judgement up to standard, Cloud Server judge filter according to the dust concentration at the net gas storehouse air outlet of acquisition Whether dust concentration up to standard in the gas of discharge, if not up to standard, issue the unqualified information of dust-filtering to control centre and Intelligent mobile terminal, to inform administrative staff；

E) filter bag dust concentration judges, Cloud Server judges according to the dust concentration in each filter bag inner cavity of acquisition through its mistake Whether the dust concentration in gas after filter is up to standard, if not up to standard, issues filter bag fault message to control centre and intelligence Mobile terminal, and to the number for the filter bag that is out of order, so that staff takes corresponding measure；

F) filter bag pressure difference judges, Cloud Server is according to the inside and outside differential pressure of each filter bag of acquisition, if inside and outside differential pressure is equal or base This is equal, then shows the breakage that filter bag occurs, then issues filter bag damage information to control centre and intelligent mobile terminal, and provide The number of damaged filter bag, so that staff takes corresponding measure；

If the inside and outside differential pressure of filter bag has been more than given threshold, excessive dust is attached on the filter screen of surface filter bag, then Issue and open the instruction that is blown to filter bag of air accumulator, and control instruction is sent to monitoring and controlling terminal, by monitoring with Controlling terminal controlling filter carries out blowing operation to filter bag；

G) dust material position judges, Cloud Server judges whether is dust material position in ash cellar according to the material position information of the ash cellar of acquisition It is excessively high, if material position is excessively high, issues and open the transportation system instruction that carries out dust to monitoring and controlling terminal, by Monitoring transports dust with controlling terminal control transportation system.