CN208436570U - A kind of bag-type duster filtering bag leak detection monitoring system - Google Patents
A kind of bag-type duster filtering bag leak detection monitoring system Download PDFInfo
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- CN208436570U CN208436570U CN201821009253.5U CN201821009253U CN208436570U CN 208436570 U CN208436570 U CN 208436570U CN 201821009253 U CN201821009253 U CN 201821009253U CN 208436570 U CN208436570 U CN 208436570U
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- plc controller
- bag
- sack cleaner
- module
- dust
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Abstract
A kind of bag-type duster filtering bag leak detection monitoring system, including AC/DC conversion module, host computer, several dust detectors and PLC controller and display screen, and serial ports is configured in PLC controller, to realize communication connection display screen；AC/DC conversion module provides DC supply for each unit in monitoring system；Host computer is used to acquire the switching signal of each pulse valve in sack cleaner, and transmits each corresponding clock signal of pulse valve to PLC controller；PLC controller judges the position of leak-off pocket in conjunction with the indoor dust concentration change information of corresponding bin according to the timing instructions of sack cleaner deashing；Display screen is used to show the dust concentration change curve of each warehouse in the net gas side of sack cleaner；The utility model realizes the real-time monitoring to filter bag each in sack cleaner and pulse valve working condition, and detection accuracy is high, reliable and stable, substantially reduces the time of steam power plant's unit load down operation.
Description
Technical field
The utility model relates to a kind of monitoring system, especially a kind of bag-type duster filtering bag leak detection monitoring system.
Background technique
Currently, the sack cleaner used by steam power plant is the open upwardly disposed sack cleaner of filter bag, each
It is respectively arranged with pulse valve at the sack of filter bag, to realize that regular deashing is handled to filter bag.Usual this sack cleaner is being removed
That dusty gas is passed through from lower side-inlet when dirt operation, dusty gas after the dust removal by filtration of the filter bag in each warehouse,
Clean gas (the lesser gas of dustiness) is discharged from the going out gas branch pipe on each warehouse top, thus, each warehouse top goes out
The side of gas is also referred to as the net gas side of sack cleaner.
Sack cleaner usually gives pulse letter to the pulse valve for being arranged in a column or a row when carrying out deashing operation
Number, to successively carry out blowing operation to corresponding each filter bag.However, each pulse valve whether there is in actual job
Whether the problems such as damage, gas leakage, short circuit, each filter bag are in damaged phenomenon, difficult due to each filter bag is built in deduster
Intuitively to be checked, and the enormous amount of filter bag, malfunction elimination operation are time-consuming and laborious.
It is specifically described by taking the operational monitoring situation of the sack cleaner in certain steam power plant as an example below.
The steam power plant is changed to PTFE base fabric/20% to #210 boiler bag-type duster filtering bag upgrade of material in September, 2013
Ultra-fine PPS+30%PPS+50%PTFE fiber blend material, deduster design concentration of emission and are lower than 20mg/Nm3(dry state, O2=
6%).By operation in 2 years, 2015, there is filter bag damage in sack cleaner, differential pressure rises in operation, two side flues are poor
Pressure is uneven and efficiency of dust collection can not be ensured there is a situation where flue dust is interrupted exceeded, and influences unit on-load.Statistical conditions are such as
Under:
In January, 2015, #1 is carried out respectively at 12 days, 13 days, 20 days, 21 days, 22 days, 23 days, 7 times on the 24th load downs and is removed
The #5 gas chamber of dirt device, #3, #4, #5 gas chamber leakage detection of #2 deduster and replacement damaged filter bag；
At 2 months 2015, #1, # of #1 deduster were carried out respectively at 6 days, 7 days, 12 days, 14 days, 5 times on the 15th load downs
3, #5 gas chamber leakage detection and replacement damaged filter bag；
In March, 2015, #1, #3 gas chamber of #1 deduster, #2 deduster are carried out respectively at 18 days, 2 times on the 19th load downs
#2, #6 gas chamber leakage detection and replacement damaged filter bag；
In April, 2015, #1, # of #1 flue are carried out respectively at 13 days, 23 days, 25 days, 26 days, 5 times on the 28th load downs
3, #4, #5 gas chamber leakage detection and replacement damaged filter bag；
In July, 2015,8 load downs carry out #1 flue, #2 flue leakage detection and replacement damaged filter bag respectively.
From the foregoing, it will be observed that amounting in January, 2015 to August because filter bag damages individual after sack cleaner longtime running can not
Detection in time and carry out artificial gas chamber one by one and hunt leak 27 times, replace filter bag about 80, load down runing time about 100 hours, sternly
Ghost image rings the environment protection emission index and economy of unit.Thus, it researches and develops the new bag-type duster filtering bag leak hunting method of one kind or sets
It is standby, it is just particularly important and urgently.
Summary of the invention
The purpose of this utility model seeks to solve to use manually to arrange the breakage of filter bag in sack cleaner
The mode looked into, there are heavy workloads, time-consuming and laborious, it is difficult to eliminate failure in time, and bring to the normal operation of steam power plant's unit
The problem of seriously affecting provides a kind of bag-type duster filtering bag leak detection monitoring system thus.
The concrete scheme of the utility model is: a kind of bag-type duster filtering bag leak detection monitoring system, it is characterized in that: including
AC/DC conversion module, host computer, several dust detectors and PLC controller and display screen, and match in PLC controller
It is equipped with serial ports, to realize communication connection display screen；
The AC/DC conversion module provides DC supply for each unit in monitoring system；
The host computer is used to acquire the switching signal of each pulse valve in sack cleaner, and transmits to PLC controller
Each corresponding clock signal of pulse valve；
The dust detector is mounted in the going out gas branch pipe of each warehouse in the net gas side of sack cleaner, and in pulse valve pair
When filter bag carries out jetting deashing, the indoor dust concentration in the storehouse is acquired；
The PLC controller by the CPU module of mutual communication connection, digital quantity I/O module and digital quantity expansion module and
Several analog quantity spread modules composition, host computer pass through sequential circuit to digital quantity I/O module and/or digital quantity expansion module
Transmission time sequence signal, each dust detector is to analog quantity spread module transfer analog signals；CPU module is according to bag-type dusting
The timing instructions of device deashing judge the position of leak-off pocket in conjunction with the indoor dust concentration change information of corresponding bin；The digital quantity
The output port of I/O module is connected with the coil of several relays, and is realized by the corresponding normally opened/normally-closed contact of relay
Real-time control is carried out to the switch of working station indicator, alarm lamp and buzzer；
The display screen is used to show the dust concentration change curve of each warehouse in the net gas side of sack cleaner.
Host computer described in the utility model and each dust detector are equipped between PLC controller for the signal congruence
Always with the terminal block of switching；Model is respectively connected between analog quantity spread module input mouth in each dust detector
The input signal isolator of DGP-1100.
The model HAW5-220S24B2 that AC/DC conversion module described in the utility model is used；The dust detector
Select the pipeline dust on-line detector of model LBT-50；The model SIMATIC S7- that the PLC controller is selected
1200, the serial ports is D type nine kinds of needles male connector；The model MT500 that the display screen is selected is configured with D type nine on a display screen
Needle female；Communication connection is carried out using the cable of model USB-MT500 between the PLC controller and display screen.
The working principle of the utility model is as follows:
Since sack cleaner is by being sprayed by each pulse valve to each row's filter bag in each warehouse at the top of pocket
Blowing compressed air realizes deashing.Jetting deashing process will also result in local, temporary powder in the net gas side of normal filter bag
Dust concentration increases on a small quantity, and when damaged leakage occurs in filter bag, jetting deashing process can make the dust concentration of net gas side significantly
Rise, wherein the dust concentration of net gas side also will appear variation during jetting deashing when pulse valve breaks down.Pocket type
Dust flow of each warehouse of deduster in its going out gas branch pipe is letting out by the net gas side of clear filter bag by each warehouse or each row
Made of the convergence of powder leakage dirt.By monitoring dust flow or concentration of each warehouse of sack cleaner in its going out gas branch pipe, I
Can be obtained by periodic dust spiking, and the time of spiking is corresponding with the time of jetting deashing pulse
's.According to the deashing timing of sack cleaner, so that it may each dust spiking is mapped with specific row or warehouse,
The position of bag leakage is judged according to the height of spiking and falling time.
The beneficial effects of the utility model are as follows:
(1) the utility model realizes each storehouse house dust of real-time display when sack cleaner carries out deashing operation
The change curve (with periodic dust concentration spiking) of concentration, comes according to the height and falling time of spiking to bag
The position of leakage is accurately judged that, also can effectively be reflected the normal operating conditions of pulse valve, be removed to realize to pocket type
The real-time monitoring of each filter bag and pulse valve working condition in dirt device；
(2) the utility model solve protoplast's work investigation there are the time long, heavy workload, and failure cannot be eliminated in time
The problem of；
(3) for the utility model is compared to the mode manually checked, detection accuracy is high, reliable and stable, and has in time
Effect substantially reduces steam power plant's unit time that load down is run due to checking failure, achieves preferable economic benefit.
Detailed description of the invention
Fig. 1 is the control structure block diagram of the utility model；
Fig. 2 is the electrical schematic diagram of the utility model.
In figure: 1-AC/DC conversion module, 2-host computers, 3-dust detectors, 4-CPU modules, 5-digital quantity IO
Module, 6-digital quantity expansion modules, 7-analog quantity spread modules, 8-serial ports, 9-display screens, 10-pulse valves, 11-ends
Son row, 12-input signal isolators.
Specific embodiment
Embodiment 1
The present embodiment carries out specific by taking the monitoring of the filter bag operating status to the sack cleaner with 12 warehouses as an example
Explanation.
Referring to Fig. 1-2, a kind of bag-type duster filtering bag is hunted leak monitoring system, including AC/DC conversion module 1, host computer 2,
12 dust detectors 3 and PLC controller and display screen 9, and serial ports 8 is configured in PLC controller, to realize communication
Connect display screen 9；
The AC/DC conversion module 1 provides+24V DC supply for each unit in monitoring system；
The host computer 2 is used to acquire the switching signal of each pulse valve 10 in sack cleaner, and passes to PLC controller
The corresponding clock signal of defeated each pulse valve 10；
The dust detector 3 is mounted in the going out gas branch pipe of each warehouse in the net gas side of sack cleaner, and in pulse valve
When 10 pairs of filter bags carry out jetting deashing, the indoor dust concentration in the storehouse is acquired；
The PLC controller is by the CPU module 4 of mutual communication connection, digital quantity I/O module 5 and a digital quantity expanded mode
Block 6 and three analog quantity spread modules 7 form, and host computer 2 is extended by sequential circuit to digital quantity I/O module 5 and digital quantity
Module 6 distinguishes transmission of one line 8 clock signals, and each dust detector 3 transmits analog quantity letter to analog quantity spread module 7
Number；CPU module 4 is sentenced according to the timing instructions of sack cleaner deashing in conjunction with the indoor dust concentration change information of corresponding bin
The position of disconnected leak-off pocket；The output port of the digital quantity I/O module 5 is separately connected the coil of four relays, and by relay phase
Normally opened/the normally-closed contact answered, which is realized, carries out real-time control to the switch of working station indicator, alarm lamp and buzzer；By
Fig. 2 is it is found that under normal conditions, working station indicator HLR2, HLR4 are always on, when the filter bag of position a certain in sack cleaner occurs
When damaged, PLC controller exports switching value pulse signal to relay KA1 or relay KA2 immediately, to control alarm lamp
HLR1 is glittering and its corresponding buzzer FMQ1 issues buzzer warning, or control alarm lamp HLR3 glittering and its corresponding
Buzzer FMQ2 issues buzzer warning.
The display screen 9 is equipped with two pieces, and is respectively used to the display each warehouse in the sack cleaner net gas side in two channels
Dust concentration change curve.
Host computer 2 described in the present embodiment and each dust detector 3 are equipped between PLC controller for the signal congruence
Always with the terminal block of switching 11；Model is respectively connected between 7 input port of analog quantity spread module in each dust detector 3
For the input signal isolator 12 of DGP-1100.
The model HAW5-220S24B2 that AC/DC conversion module described in the present embodiment 1 is used；The dust detector 3
Select the pipeline dust on-line detector of model LBT-50；The model SIMATIC S7- that the PLC controller is selected
1200, the serial ports 8 is D type nine kinds of needles male connector；The model MT500 that the display screen 9 is selected is configured with D type on display screen 9
Nine kinds of needles female；Communication connection is carried out using the cable of model USB-MT500 between the PLC controller and display screen.
Claims (3)
- The monitoring system 1. a kind of bag-type duster filtering bag is hunted leak, it is characterized in that: include AC/DC conversion module, host computer, several Dust detector and PLC controller and display screen, and serial ports is configured in PLC controller, to realize that communication connection is shown Screen；The AC/DC conversion module provides DC supply for each unit in monitoring system；The host computer is used to acquire the switching signal of each pulse valve in sack cleaner, and each to PLC controller transmission The corresponding clock signal of pulse valve；The dust detector is mounted in the going out gas branch pipe of each warehouse in the net gas side of sack cleaner, and in pulse valve to filter bag When carrying out jetting deashing, the indoor dust concentration in the storehouse is acquired；The PLC controller is by the CPU module of mutual communication connection, digital quantity I/O module and digital quantity expansion module and several A analog quantity spread module composition, host computer are transmitted by sequential circuit to digital quantity I/O module and/or digital quantity expansion module Clock signal, each dust detector is to analog quantity spread module transfer analog signals；CPU module is clear according to sack cleaner The timing instructions of ash, the position of leak-off pocket is judged in conjunction with the indoor dust concentration change information of corresponding bin；The digital quantity IO mould The output port of block is connected with the coil of several relays, and is realized by the corresponding normally opened/normally-closed contact of relay to work The switch for making status indicator lamp, alarm lamp and buzzer carries out real-time control；The display screen is used to show the dust concentration change curve of each warehouse in the net gas side of sack cleaner.
- The monitoring system 2. a kind of bag-type duster filtering bag according to claim 1 is hunted leak, it is characterized in that: the host computer with Each dust detector between PLC controller be equipped with for signal wire summarize with transfer terminal block；It is detected in each dust Instrument is to the input signal isolator for being respectively connected with model DGP-1100 between analog quantity spread module input mouth.
- The monitoring system 3. a kind of bag-type duster filtering bag according to claim 1 or 2 is hunted leak, it is characterized in that: the AC/DC The model HAW5-220S24B2 that conversion module uses；The dust detector selects the pipeline dust of model LBT-50 to exist Line detector；The model SIMATIC S7-1200 that the PLC controller is selected, the serial ports are D type nine kinds of needles male connector；It is described The model MT500 that display screen is selected is configured with D type nine kinds of needles female on a display screen；Between the PLC controller and display screen Communication connection is carried out using the cable of model USB-MT500.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821009253.5U CN208436570U (en) | 2018-06-28 | 2018-06-28 | A kind of bag-type duster filtering bag leak detection monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821009253.5U CN208436570U (en) | 2018-06-28 | 2018-06-28 | A kind of bag-type duster filtering bag leak detection monitoring system |
Publications (1)
| Publication Number | Publication Date |
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| CN208436570U true CN208436570U (en) | 2019-01-29 |
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ID=65087762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821009253.5U Expired - Fee Related CN208436570U (en) | 2018-06-28 | 2018-06-28 | A kind of bag-type duster filtering bag leak detection monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999583A (en) * | 2019-05-14 | 2019-07-12 | 山东优纳特环境科技有限公司 | A kind of bag-type dust removing system and method for diagnosing faults based on cloud platform |
| CN110585811A (en) * | 2019-08-15 | 2019-12-20 | 杭州科灵威识精密仪器有限公司 | Bag collector monitoring and diagnostic analysis system |
| CN111974102A (en) * | 2020-07-02 | 2020-11-24 | 黄山天之都环境科技发展有限公司 | Bag collector high in clouds online monitored control system |
-
2018
- 2018-06-28 CN CN201821009253.5U patent/CN208436570U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109999583A (en) * | 2019-05-14 | 2019-07-12 | 山东优纳特环境科技有限公司 | A kind of bag-type dust removing system and method for diagnosing faults based on cloud platform |
| CN110585811A (en) * | 2019-08-15 | 2019-12-20 | 杭州科灵威识精密仪器有限公司 | Bag collector monitoring and diagnostic analysis system |
| CN111974102A (en) * | 2020-07-02 | 2020-11-24 | 黄山天之都环境科技发展有限公司 | Bag collector high in clouds online monitored control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190129 Termination date: 20190628 |