CN210786576U - Bag collector monitoring devices - Google Patents
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- CN210786576U CN210786576U CN201921324451.5U CN201921324451U CN210786576U CN 210786576 U CN210786576 U CN 210786576U CN 201921324451 U CN201921324451 U CN 201921324451U CN 210786576 U CN210786576 U CN 210786576U
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Abstract
The utility model discloses a bag type dust collector monitoring device, which comprises dust collector end monitoring hardware, data acquisition equipment and an upper computer; the dust remover end monitoring hardware comprises a high-precision dust meter, a pressure transmitter and a differential pressure transmitter; the high-precision dust meter is arranged at the outlet pipe of the dust remover, the pressure taking points of the differential pressure transmitter are arranged at the inlet and the outlet of the dust remover, and the pressure transmitter is arranged on the output main pipe of the gas storage tank; the data acquisition equipment is connected with the upper computer and comprises a data acquisition cabinet, a PLC and a switching power supply are arranged in the data acquisition cabinet, and the data acquisition cabinet is connected with the PLC in the field dust remover electric control cabinet through a switch and a network cable. The utility model discloses realize the diagnosis and the monitoring of dust remover wholeness ability and the multi-parameter of the leak detection of dust remover filtration system sack, dust remover jetting system essential element poppet valve and pulse valve.
Description
Technical Field
The utility model relates to a monitoring and diagnostic analysis system especially relates to a bag collector monitoring devices.
Background
The bag type dust collector is a dry type dust filtering device. After the filter material is used for a period of time, due to the effects of screening, collision, detention, diffusion, static electricity and the like, a layer of dust is accumulated on the surface of the filter bag, the layer of dust is called as a primary layer, in the later movement process, the primary layer becomes a main filter layer of the filter material, and the filter material with larger meshes can obtain higher filter effect by virtue of the action of the primary layer. With the accumulation of dust on the surface of the filter material, the effect and resistance of the dust remover are correspondingly increased, and when the pressure difference between two sides of the filter material is large, some fine dust particles attached to the filter material are extruded, so that the effect of the dust remover is reduced. In addition, the air volume of the dust removal system is significantly reduced due to the excessively high resistance of the dust remover. Therefore, the dust is removed in time after the resistance of the dust remover reaches a certain value. The initial layer can not be damaged during ash removal, so that the reduction of dust efficiency is avoided.
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. Therefore, the bag-type dust collector needs to be managed finely. There are three requirements for fine management of the bag type dust collector, the first is diagnostic analysis of a filter system of the dust collector, the second is diagnostic analysis of a blowing system of the dust collector, and the third is analysis of the dust collector.
The main component of the filter system of the bag type dust collector is the cloth bag, so the diagnostic analysis content of the filter system of the dust collector is the leakage detection and the positioning of the cloth bag to the leakage position of the cloth bag. At present, four methods for detecting the bag leakage exist:
1. detecting by a dust remover differential pressure method: the cloth bag itself has an air resistance. When the cloth bag is blocked, the integral air resistance of the bag type dust collector is increased, so that the differential pressure of the dust collector is increased; when the cloth bag leaks, the whole air resistance of the bag type dust collector is reduced, so that the differential pressure of the dust collector is reduced. Therefore, whether the cloth bag leaks or not can be detected by utilizing the differential pressure. However, when the leakage quantity of the cloth bag of the dust collector is small, the differential pressure method cannot judge whether the filter bag leaks, so that the accuracy is low when the differential pressure method judges whether the cloth bag has the leakage defect, but the position of the cloth bag which leaks cannot be judged. To summarize: accurate diagnosis of filtering cannot be achieved.
2. And (3) manual observation method: when the bag type dust collector generates bag leakage, the bag type dust collector cannot filter the smoke containing a large amount of particulate matters, so that the smoke containing a large amount of particulate matters is directly discharged into the atmosphere through a chimney. The color of the particles is obvious, and the particles are generally black or yellow, so that yellow smoke or black smoke can be seen in the chimney. Therefore, whether the cloth bag of the bag type dust collector leaks or not is judged. To summarize: accurate diagnosis of filtering cannot be achieved.
3. The method for installing the dust concentration transmitter in multiple bin bodies comprises the following steps: the large dust collector is provided with 32-64 bin bodies, and whether a cloth bag in each bin body leaks or not is judged by installing a dust concentration transmitter on each bin body. The detection method realizes the online judgment of whether the cloth bag of the bag type dust collector leaks or not, can find the bin body with the leaked cloth bag, and is a feasible detection means. The shortcoming is that the installation is in large quantities, and the engineering volume is big, and the instrument maintenance volume is big to probably can influence the maintenance of the storehouse body (when needing to change the sack, need open the storehouse body, extract the dust concentration changer). To summarize: accurate diagnosis of filtration can be achieved, the real-time performance is strong, and the defects are that the engineering quantity is huge and the cost is high.
4. A fluorescent powder method: fluorescent powder is scattered at the inlet of the bag type dust collector, then the bag type dust collector is stopped, and a worker drills into the dust collector to observe the condition of the fluorescent powder on the surface of the cloth bag to judge whether the cloth bag leaks. The method belongs to an off-line detection method, can detect whether the cloth bag leaks or not, can also find the position where the cloth bag leaks, but cannot achieve real-time performance. To summarize: accurate diagnosis of filtering can be achieved, and instantaneity is poor.
The main components of the blowing system of a bag-type dust collector are a lift valve and a pulse valve. The diagnostic content of the baghouse filter system is therefore mainly to determine if the poppet valves and pulse valves are damaged and to find the position of the damaged poppet valves and pulse valves. At present, there are two ways to diagnose poppet valves in a bag-type dust collector blowing system:
1. whether the poppet valve is in place or not is judged through the poppet valve up-down motion limit switch. The mode has higher installation requirement on the limit switch, can judge whether the poppet valve moves up and down, and cannot judge the situation that the poppet valve does not move in place if the installation position of the limit switch is not strict. And (4) conclusion: the diagnosis function of the poppet valve can be basically realized, and the real-time performance is strong.
2. The action condition of the poppet valve is judged through manual observation. Large dusters typically have 32-64 poppet valves, each valve spaced about 2-3 meters apart, with each valve operating for a period of minutes to hours, and if carefully observed by a worker, the worker can determine whether the valve is good or bad. And (4) conclusion: the requirements on the quality of workers are high, the diagnosis function of the poppet valve can be basically realized, and the real-time performance is poor.
At present, the diagnosis mode of a pulse valve in a bag type dust collector blowing system is only one mode: and (4) manually judging, wherein a worker goes to the site to listen to the sound of the pulse valve, so that the working state of the pulse valve is judged. Because large-scale dust remover has hundreds of pulse valves, and the site environment is noisy, and pulse sound is more sharp, leads to tinnitus easily, and general manual judgement mode can't judge whether the pulse valve has taken place to leak. And (4) conclusion: the diagnostic function of the pulse valve cannot be realized, and the real-time performance is poor.
Therefore, it is an urgent problem for those skilled in the art to develop a monitoring device for a bag type dust collector.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned not enough, provide a bag collector monitoring devices.
The above object of the present invention is achieved by the following technical solutions: a bag type dust collector monitoring device comprises dust collector end monitoring hardware, data acquisition equipment and an upper computer;
the dust remover end monitoring hardware comprises a high-precision dust meter, a pressure transmitter and a differential pressure transmitter; the high-precision dust meter is arranged at the outlet pipe of the dust remover, the pressure taking points of the differential pressure transmitter are arranged at the inlet and the outlet of the dust remover, and the pressure transmitter is arranged on the output main pipe of the gas storage tank; meanwhile, the high-precision dust meter is connected to data acquisition equipment through a signal line, and the pressure transmitter and the differential pressure transmitter are connected to the data acquisition equipment through signal lines;
the data acquisition equipment is connected with an upper computer and comprises a data acquisition cabinet, a PLC and a switching power supply are arranged in the data acquisition cabinet, the PLC is mainly used for synchronizing PLC signals in the field electric control cabinet, the PLC software programming content is synchronous data, the authority is set, the data type is changed, and the data are uploaded to the upper computer; the data acquisition cabinet is connected with a PLC in the field dust collector electric control cabinet through programming software, a switch and a network cable, and data are synchronized and processed; and the programming software acquires the PLC data in the data acquisition equipment through a protocol and a network cable.
Furthermore, the upper computer comprises a PC (personal computer) host which is placed in an office building of workers and is provided with dust remover online monitoring and diagnosis software (special for self-development). The software functions are: 1. the multi-parameter real-time monitoring and alarming of the dust remover; 2. filter system diagnostic analysis; 3. diagnosis and analysis of the blowing system; 4. and analyzing the overall performance of the dust remover.
Furthermore, the bag type dust collector monitoring device also comprises a dust concentration meter, wherein the dust concentration meter is arranged in each bin body of the dust collector, and the dust concentration meter is connected to the data acquisition equipment through a switching value signal or a 4-20mA signal line.
Further, the high accuracy dust meter is two probe high accuracy dust meters.
Further, the differential pressure transmitter is a monocrystalline silicon differential pressure transmitter.
Further, the pressure transmitter is a monocrystalline silicon pressure transmitter.
Furthermore, the data acquisition cabinet is installed on the wall of the electric control cabin by adopting wall-mounted installation.
The utility model discloses the theory of operation of system includes following three aspect:
first, the diagnostic principle of the precipitator filtration system:
the main component of the filter system of the dust collector is a cloth bag, so the diagnosis content of the filter system of the dust collector mainly judges whether the cloth bag leaks and the position where the cloth bag leaks. The position of the cloth bag leaking is in a specific chamber, and each chamber is independent. Control of the opening and closing of each chamber is achieved by poppet valves. In the preparation blowing stage, the lift valve is started first to completely close the chamber, then the pulse valves in the chamber are blown one by one, and after blowing is finished, the lift valve is opened. If the cloth bag in the bin is damaged, dust can seep through the cloth bag after the blowing valve blows, and when the lifting valve is opened, the dust reaches the outlet of the dust remover along with the flue gas. The high-precision dust meter can detect extremely low leakage dust concentration. Therefore, the leakage of which bin body of the dust remover leaks can be judged. Since the leakage of the cloth bag also has a certain influence on the differential pressure, the differential pressure is used as an auxiliary judgment parameter and also needs to participate in the judgment logic of the cloth bag.
The main process is that the data acquisition equipment acquires a poppet valve action signal, a dust concentration signal and a differential pressure signal, and uploads the signals to an upper computer, and the upper computer realizes the diagnosis of a dust remover filtering system.
Secondly, the diagnosis principle of a dust remover blowing system is as follows:
the main components of the precipitator blowing system are the pulse valve and the poppet valve, so the main diagnostic content of the precipitator blowing system is whether the poppet valve and the pulse valve are in failure, and the position of the failed poppet valve and the pulse valve. The diagnosis of the lift valve in the blowing system is comprehensively judged by multiple parameters, including but not limited to a lift valve action switching value signal, a lift valve upper/lower limit signal, a pressure signal, a differential pressure signal and a dust signal. When the lift valve breaks down, after the lift valve action signal is acquired, the dust concentration, the pressure signal and the differential pressure signal keep a certain trend, and therefore whether the lift valve breaks down or not and the position of the break down are judged. The diagnosis of the pulse valve needs to be judged through the dust concentration and the pressure, if the pulse valve fails, after the pulse valve action signal is obtained, the dust concentration and the pressure curve keep a certain trend, and therefore whether the pulse valve is damaged or not is judged.
The main flow is that the data acquisition equipment acquires a poppet valve action signal, a pulse valve, a dust concentration signal, a pressure signal and a differential pressure signal, and uploads the signals to an upper computer, and the upper computer realizes the diagnosis of a dust remover blowing system.
Thirdly, the overall analysis principle of the dust remover:
content of overall analysis of the dust collector: 1. comparing the normal operation time of the dust remover, the operation time of a warning mode of the dust remover and the operation time of the fault of the dust remover; this is based on the deduster alarm information and the large data statistics of the database time node acquisition. 2. And comparing the normal operation time of each bin body of the dust remover, the operation time of a warning mode of the dust remover and the operation time of the fault of the dust remover, and specifically comprising bag comparison, lift valve comparison and pulse valve comparison in the bin bodies. This is based on a large number of data statistics of the diagnostic function and the acquisition database time node. 3. And comparing and analyzing the fault rate of each bin body of the dust remover, wherein the fault rate analysis comprises the fault rate analysis of a lift valve, a pulse valve and a cloth bag. This is done based on diagnostic functions, obtaining raw data for the database, and obtaining time nodes for the database. 4. The dust collector maintenance period and recommendation are based on alarm conditions, raw data and a large amount of data statistics of time nodes in a database.
Compared with the prior art, the utility model the advantage be:
at present, a system for comprehensively diagnosing and analyzing the dust remover is not available, the dust remover diagnosis is only stopped to check whether the cloth bag leaks, the detection scheme is not perfect, and different schemes are not customized according to different dust remover types, cost, engineering quantity, requirements and the like. Structurally, the dust remover comprises a dust remover filtering system and a blowing system which are inseparable, the dust remover filtering system breaks down, except for natural abrasion, most of the faults are caused indirectly by the faults of the blowing system, and the diagnosis of the dust remover blowing system is ignored because the dust remover blowing system has wide fault points and large quantity and is difficult to judge.
The utility model discloses the system is the comprehensive diagnostic system of one set of diagnosis bag collector, and its advantage can be followed the scheme, the installation and the function embodiment of bag collector multi-parameter on-line monitoring warning and dust remover filtration system jetting system intelligent diagnosis analytic system.
Firstly, the advantages of the scheme are that a series of objective analyses are carried out on the dust remover according to the comprehensive understanding of the dust remover, wherein the analysis comprises but is not limited to the specification of the dust remover, the operation mode of the dust remover, the management requirement of the dust remover, the modification requirement and the cost of the dust remover and the like. The change influence factor of the scheme is only that the detection hardware at the dust remover end is changed, the influence of the whole system is small, the change of the scheme can not cause the big difference of the whole system, and the change of the scheme is still consistent on the display of software content.
Secondly is structural advantage, the utility model discloses the system comprises the triplex, simple structure, and installation and construction engineering volume is little, and the cost is controllable. The improved dust remover has fewer changed parts aiming at different dust removers and stronger general application. And an additional data acquisition device is adopted to synchronize data, instead of directly operating on the original dust remover electric control cabinet PLC, so that any influence on the original dust remover electric control cabinet PLC can be avoided.
Finally, the function advantage is that the traditional technology for detecting the leakage of the cloth bag only sends the switching value signal of the leakage position of the cloth bag to the client DCS, the alarm information is single, and the misjudgment exist. The utility model discloses the system is different from the traditional technique that only detects the sack and leak, increases dust meter detection range and utilizes host computer software to improve bag collector filtration diagnostic function from the algorithm of studying by oneself through the customization probe, has still included the diagnosis of dust remover jetting system, has analyzed the holistic operational aspect of dust remover and maintenance/stock suggestion, has realized the automatic comprehensive diagnosis of dust remover and analysis in the true sense, has reduced a large amount of manpowers. In addition, the intelligent diagnosis and analysis system of the bag type dust collector multi-parameter online monitoring alarm and dust collector filtering system blowing system is not only a management system of a single dust collector, but also can automatically manage dozens of sets of dust collectors or even hundreds of sets of dust collectors according to regional division/plant division, thereby really helping enterprises to manage the dust collectors and saving budget. The alarm logic and the notification mode of the intelligent analysis system are more in line with the situation of the site, the intelligent analysis system can record the state and the value of each time when diagnosing the dust remover and analyze the correlation of the continuous values, and when the correlation of the continuous values reaches a certain degree, the system can confirm that the fault occurs, thus avoiding blind alarm, false alarm and misinformation; the reminding mode is added with a notification, the means include but are not limited to short messages, emails and a mobile phone APP system, and the notification content specifically comprises a certain problem, a certain time and a certain processing suggestion of a certain number of a certain system of a certain dust remover in a certain workshop at a certain factory position.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a software function diagram of the present invention.
Fig. 3 is a schematic structural diagram of the PC host of the present invention.
Fig. 4 is a schematic structural diagram of the data acquisition cabinet of the present invention.
Fig. 5 is a schematic structural diagram of the differential pressure transmitter of the present invention.
Fig. 6 is a schematic structural diagram of the middle pressure transmitter of the present invention.
Fig. 7 is a schematic structural diagram of the high-precision dust meter of the present invention.
Fig. 8 is a schematic side elevation structure diagram of the middle bag-type dust collector of the present invention.
Fig. 9 is a schematic view of the overlooking structure of the bag-type dust collector of the present invention.
Legend explanation, 1, upper computer; 2. a high-precision dust meter; 3. a pressure transmitter; 4. a differential pressure transmitter; 5. an electric control cabinet of the on-site dust remover; 6. a data acquisition cabinet; 7. a PLC in the electric control cabinet of the on-site dust remover; 8. a PLC in the data acquisition cabinet; 9. a cable; 10. a dust concentration meter; 11. a pressure point of a differential pressure transmitter; 12. a switch.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 9, a bag-type dust collector monitoring device includes dust collector end monitoring hardware, data acquisition equipment and an upper computer 1;
the dust remover end monitoring hardware comprises a high-precision dust meter 2, a pressure transmitter 3 and a differential pressure transmitter 4; the high-precision dust meter 2 is arranged at the outlet pipe of the dust remover, the pressure taking points 11 of the differential pressure transmitter are arranged at the inlet and the outlet of the dust remover, and the pressure transmitter 3 is arranged on the output header pipe of the gas storage tank; meanwhile, the high-precision dust meter 2 is connected to a data acquisition device through a 4-20mA signal wire, the pressure transmitter 3 and the differential pressure transmitter 4 are connected to the data acquisition device through a 4-20mA signal wire, and the signal wire is a cable 9;
the data acquisition equipment is connected with the upper computer 1 and comprises a data acquisition cabinet 6, a PLC8 and a switching power supply in the data acquisition cabinet are arranged in the data acquisition cabinet, the PLC is mainly used for synchronizing PLC signals in the electric control cabinet 5 of the field dust remover, the PLC software programming content is synchronous data, the authority is set, the data type is changed, and the data are uploaded to the upper computer; the data acquisition cabinet is connected with a PLC7 in the electric control cabinet of the field dust remover through programming software, a switch 12 and an RJ45 network cable, and data are synchronized and processed; and the programming software acquires the PLC data in the data acquisition equipment through a protocol and an RJ45 network cable.
Furthermore, the upper computer comprises a PC (personal computer) host which is placed in an office building of workers and is provided with dust remover online monitoring and diagnosis software (special for self-development). The software functions are: 1. the multi-parameter real-time monitoring and alarming of the dust remover; 2. filter system diagnostic analysis; 3. diagnosis and analysis of the blowing system; 4. and analyzing the overall performance of the dust remover.
Furthermore, the bag type dust collector monitoring device also comprises a dust concentration meter, wherein the dust concentration meter is arranged in each bin body of the dust collector, and the dust concentration meter is connected to the data acquisition equipment through a switching value signal or a 4-20mA signal line.
Further, the high accuracy dust meter is two probe high accuracy dust meters.
Further, the differential pressure transmitter is a monocrystalline silicon differential pressure transmitter.
Further, the pressure transmitter is a monocrystalline silicon pressure transmitter.
Furthermore, the data acquisition cabinet is installed on the wall of the electric control cabin by adopting wall-mounted installation.
The utility model discloses the theory of operation of system includes following three aspect:
first, the diagnostic principle of the precipitator filtration system:
the main component of the filter system of the dust collector is a cloth bag, so the diagnosis content of the filter system of the dust collector mainly judges whether the cloth bag leaks and the position where the cloth bag leaks. The position of the cloth bag leaking is in a specific chamber, and each chamber is independent. Control of the opening and closing of each chamber is achieved by poppet valves. In the preparation blowing stage, the lift valve is started first to completely close the chamber, then the pulse valves in the chamber are blown one by one, and after blowing is finished, the lift valve is opened. If the cloth bag in the bin is damaged, dust can seep through the cloth bag after the blowing valve blows, and when the lifting valve is opened, the dust reaches the outlet of the dust remover along with the flue gas. The high-precision dust meter can detect extremely low leakage dust concentration. Therefore, the leakage of which bin body of the dust remover leaks can be judged. Since the leakage of the cloth bag also has a certain influence on the differential pressure, the differential pressure is used as an auxiliary judgment parameter and also needs to participate in the judgment logic of the cloth bag.
The main process is that the data acquisition equipment acquires a poppet valve action signal, a dust concentration signal and a differential pressure signal, and uploads the signals to an upper computer, and the upper computer realizes the diagnosis of a dust remover filtering system.
Secondly, the diagnosis principle of a dust remover blowing system is as follows:
the main components of the precipitator blowing system are the pulse valve and the poppet valve, so the main diagnostic content of the precipitator blowing system is whether the poppet valve and the pulse valve are in failure, and the position of the failed poppet valve and the pulse valve. The diagnosis of the lift valve in the blowing system is comprehensively judged by multiple parameters, including but not limited to a lift valve action switching value signal, a lift valve upper/lower limit signal, a pressure signal, a differential pressure signal and a dust signal. When the lift valve breaks down, after the lift valve action signal is acquired, the dust concentration, the pressure signal and the differential pressure signal keep a certain trend, and therefore whether the lift valve breaks down or not and the position of the break down are judged. The diagnosis of the pulse valve needs to be judged through the dust concentration and the pressure, if the pulse valve fails, after the pulse valve action signal is obtained, the dust concentration and the pressure curve keep a certain trend, and therefore whether the pulse valve is damaged or not is judged.
The main flow is that the data acquisition equipment acquires a poppet valve action signal, a pulse valve, a dust concentration signal, a pressure signal and a differential pressure signal, and uploads the signals to an upper computer, and the upper computer realizes the diagnosis of a dust remover blowing system.
Thirdly, the overall analysis principle of the dust remover:
content of overall analysis of the dust collector: 1. comparing the normal operation time of the dust remover, the operation time of a warning mode of the dust remover and the operation time of the fault of the dust remover; this is based on the deduster alarm information and the large data statistics of the database time node acquisition. 2. And comparing the normal operation time of each bin body of the dust remover, the operation time of a warning mode of the dust remover and the operation time of the fault of the dust remover, and specifically comprising bag comparison, lift valve comparison and pulse valve comparison in the bin bodies. This is based on a large number of data statistics of the diagnostic function and the acquisition database time node. 3. And comparing and analyzing the fault rate of each bin body of the dust remover, wherein the fault rate analysis comprises the fault rate analysis of a lift valve, a pulse valve and a cloth bag. This is done based on diagnostic functions, obtaining raw data for the database, and obtaining time nodes for the database. 4. The dust collector maintenance period and recommendation are based on alarm conditions, raw data and a large amount of data statistics of time nodes in a database.
The utility model discloses a specific embodiment 1:
1. the system comprises the following components:
1.1 the dust remover monitoring hardware is: a double-probe high-precision dust meter; a monocrystalline silicon differential pressure transmitter; two monocrystalline silicon pressure transmitters.
1.2 data acquisition equipment: the data acquisition cabinet comprises a PLC and a switching power supply.
1.3, upper computer: a PC host (e.g., an industrial computer); the PC host is provided with dust remover on-line monitoring and diagnosis software.
2. System installation:
2.1 dust remover end: the double-probe high-precision dust meter is arranged at the outlet pipe of the dust remover, the pressure taking points of the monocrystalline silicon differential pressure transmitter are arranged at the inlet and the outlet of the dust remover, and the monocrystalline silicon pressure transmitter is arranged on the gas storage tank output header pipe.
2.2 data acquisition cabinet: the data acquisition cabinet is installed on the wall of the electric control cabin by adopting wall-mounted installation
2.3, an upper computer: the online monitoring and diagnosing system of the dust remover is arranged on a PC host (such as an industrial control computer), and the PC host is placed in an office building of workers.
3. System wiring:
the high-precision dust meter requires 24V DC power supply, the power supply is realized through the data acquisition cabinet, and the high-precision dust meter, the differential pressure transmitter and the pressure transmitter are connected to the data acquisition cabinet in a signal output mode of 4-20 mA. The data acquisition cabinet is respectively connected to the electric control cabinet of the field dust remover and the PC host through a switch and an RJ45 network cable.
4. And (3) system data transmission:
the PLC in the data acquisition cabinet reads a high-precision dust meter signal, a differential pressure transmitter signal and a pressure signal through an analog input module, and then synchronizes a lift valve action signal, a lift valve upper limit signal, a lift valve lower limit signal and a pulse valve action signal in the field PLC through a protocol. The online monitoring and diagnosing software of the dust remover on the PC host obtains data through the register of the PLC in the protocol scanning data acquisition cabinet.
5. The system is realized as follows:
the dust remover operation, when the storehouse body of No. 1 prepares to blow, No. 1 poppet valve action, No. 1 storehouse door is closed, No. 1 storehouse internal pulse valve is blown in proper order, because No. 1 storehouse sack in the internal damage has taken place, when the sack is blown, there is the dust to permeate the sack, No. 1 poppet valve action, when No. 1 hatch door is opened, dust concentration has a sharp rising, the curve that risees is by the lift valve serial number on the mark, after this kind of condition recurrence, the system confirms that No. 1 storehouse internal cloth bag that No. 1 poppet valve corresponds has taken place the leakage. When the No. 2 cabin body of the dust remover is ready for blowing, the No. 2 poppet valve obtains an action signal (actually does not act), the system does not obtain a lower limit signal of the poppet valve, the fault of the No. 2 poppet valve is judged, the dust remover continues to operate the blowing of the pulse valve, when the second pulse is carried out, the blowing pressure is not reduced, and the system automatically judges the fault of the second pulse valve. Thus, the system diagnoses all faults of the dust remover.
The utility model discloses a concrete scheme 2:
1. the system comprises the following components:
1.1 the dust remover monitoring hardware is: a double-probe high-precision dust meter 2; thirty-two dust concentration meters 10; a monocrystalline silicon differential pressure transmitter 4; two monocrystalline silicon pressure transmitters 3.
1.2 data acquisition equipment: the data acquisition cabinet comprises a PLC and a switching power supply.
1.3, upper computer: a PC host (e.g., an industrial computer); the PC host is provided with dust remover on-line monitoring and diagnosis software.
2. System installation:
2.1 dust remover end: the double-probe high-precision dust meter is arranged at the outlet pipe of the dust remover, 32 dust concentration meters are respectively arranged on each bin body of the dust remover, the pressure taking points of the monocrystalline silicon differential pressure transmitter are arranged at the inlet and the outlet of the dust remover, and the monocrystalline silicon pressure transmitter is arranged on the output header pipe of the gas storage tank.
2.2 data acquisition cabinet: the data acquisition cabinet is installed on the wall of the electric control cabin by adopting wall-mounted installation.
2.3 Intelligent software System: the online monitoring and diagnosing system for the dust remover is installed on a PC host machine, such as an industrial personal computer, and the PC host machine, such as the industrial personal computer, is placed in an office building of workers.
3. System wiring:
the power supply requirement of the high-precision dust meter is 24V DC, the power supply is realized through the data acquisition cabinet, the signal output mode of the high-precision dust meter, the differential pressure transmitter and the pressure transmitter is 4-20mA, the output mode of the dust concentration meter is a switching value signal, and the output signals are all connected to the data acquisition cabinet. The data acquisition cabinet is respectively connected to the electric control cabinet of the field dust remover and the PC host through a switch and an RJ45 network cable.
4. And (3) system data transmission:
PLC in the data acquisition cabinet reads high-precision dust instrument signals, differential pressure transmitter signals and pressure signals through an analog input module, reads dust concentration instrument signals through a switching value input module, and synchronizes 'lift valve action signals', 'lift valve upper limit signals', 'lift valve lower limit signals' and 'pulse valve action signals' in the field electric control cabinet PLC through a protocol. The online monitoring and diagnosing software of the dust remover on the PC host obtains data through the register of the PLC in the protocol scanning data acquisition cabinet.
5. The system is realized as follows:
the dust remover operation, when the jetting is prepared to No. 1 storehouse body, No. 1 poppet valve action, No. 1 storehouse door is closed, No. 1 storehouse internal pulse valve is jetting in proper order, because No. 1 storehouse sack in the internal damage has taken place, when the sack is jetted, there is the dust to permeate the sack, No. 1 poppet valve action, when No. 1 hatch door is opened, dust concentration has a sharp rising, the curve that risees is by the ascending valve number on the mark, No. 1 dust concentration appearance is reported to the police simultaneously, when two kinds of reports to the police and triggers simultaneously, the leakage takes place in the dust remover storehouse body. When such a situation repeatedly occurs, the system confirms that the cloth bag in the No. 1 cabin body corresponding to the No. 1 poppet valve leaks. When the No. 2 cabin body of the dust remover is ready for blowing, the No. 2 poppet valve obtains an action signal (actually does not act), the system does not obtain a lower limit signal of the poppet valve, the fault of the No. 2 poppet valve is judged, the dust remover continues to operate the blowing of the pulse valve, when the second pulse is carried out, the blowing pressure is not reduced, and the system automatically judges the fault of the second pulse valve. Thus, the system diagnoses all faults of the dust remover.
The utility model discloses an application:
the utility model discloses a bag collector monitoring devices mainly used electric power industry, chemical industry, steel industry, cement industry, coal industry, petrochemical industry, non ferrous metal trade, msw incineration trade, tobacco industry, food industry, pharmacy trade, papermaking trade, glass trade medium and long bag pulse bag collector, back-blowing bag collector, multistage filter bag collector, electrostatic precipitator, filter cartridge formula dust remover, filter bag collector of crossing.
The utility model provides a dust remover multi-parameter real-time supervision is reported to police, includes: 1. monitoring dust concentration data of the dust remover in real time, and alarming when the concentration is ultrahigh; 2. monitoring the air source pressure data of the dust remover in real time, and alarming when the air source pressure is low; 3. the dust concentration data and the pressure data are used as data sources of a diagnosis and analysis system, and the dust remover is comprehensively diagnosed and gives an alarm under various working conditions;
secondly, the filter system diagnosis and analysis comprises the following steps: 1. analyzing whether a bag of the dust collector leaks or not; 2. analyzing the position of the bag leakage of the dust collector;
thirdly, diagnosis and analysis of the blowing system, comprising: 1. whether a lift valve and a pulse valve in the blowing system have faults or not; 2. the serial number and the position of a failure of a lift valve and a pulse valve in the blowing system;
fourthly, analyzing the overall performance of the dust remover, comprising: 1. counting and comparing the running time of the dust remover; 2. counting the working rate of a filter system of the dust remover; 3. counting the bag running time rate of a filter system of the dust collector; 4. analyzing the service life of a cloth bag of a filter system of the dust remover; 5. reminding the replacement period of a cloth bag of a filter system of the dust collector; 6. counting the working rate of a blowing system of the dust remover; 7. the operation time rate of the blowing system of the dust remover is counted; 8. the service life of a blowing system of the dust remover is improved and analyzed; 9. and reminding the replacement period of a lift valve and a pulse valve of a blowing system of the dust remover.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides a bag collector monitoring devices which characterized in that: the system comprises dust remover end monitoring hardware, data acquisition equipment and an upper computer;
the dust remover end monitoring hardware comprises a high-precision dust meter, a pressure transmitter and a differential pressure transmitter; the high-precision dust meter is arranged at the outlet pipe of the dust remover, the pressure taking points of the differential pressure transmitter are arranged at the inlet and the outlet of the dust remover, and the pressure transmitter is arranged on the output main pipe of the gas storage tank; meanwhile, the high-precision dust meter is connected to data acquisition equipment through a signal line, and the pressure transmitter and the differential pressure transmitter are connected to the data acquisition equipment through signal lines;
the data acquisition equipment is connected with the upper computer and comprises a data acquisition cabinet, a PLC and a switching power supply are arranged in the data acquisition cabinet and used for synchronizing PLC signals in the field electric control cabinet, and the data acquisition cabinet is connected with the PLC in the field dust remover electric control cabinet through a switch and a network cable.
2. The bag house monitoring device of claim 1, wherein: the upper computer comprises a PC host, and the PC host is placed in an office building of workers.
3. The bag house monitoring device of claim 1, wherein: the bag type dust collector monitoring device further comprises a dust concentration meter, the dust concentration meter is installed in each bin body of the dust collector, and the dust concentration meter is connected to data acquisition equipment through a switching value signal or a signal line.
4. The bag house monitoring device of claim 1, wherein: the high-precision dust meter is a double-probe high-precision dust meter.
5. The bag house monitoring device of claim 1, wherein: the differential pressure transmitter is a monocrystalline silicon differential pressure transmitter.
6. The bag house monitoring device of claim 1, wherein: the pressure transmitter is a monocrystalline silicon pressure transmitter.
7. The bag house monitoring device of claim 1, wherein: the data acquisition cabinet is installed on the wall of the electric control cabin by adopting wall-mounted installation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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