KR102139147B1 - Filtration and dust collector monitoring system - Google Patents

Abstract

A monitoring system for a filtration dust collector is disclosed. The monitoring system of the filtration dust collector of the present invention includes a chamber having a gas inlet and a gas outlet, a differential pressure gauge measuring a differential pressure between the gas inlet and the outlet, and a plurality of workshops in which a filtration dust collector including a plurality of bag filters sequentially installed in the chamber is installed A filtration dust collector monitoring system, comprising: a pulsing unit supplying compressed air to a plurality of bag filters and pulsing them; Detecting and determining the operation information of the dust collector including the sensing value of the differential pressure gauge, the pulsing re-drive cycle through the driving on/off sensing unit of the pulsing unit, the operating time of the pulsing unit, the power required by the operation of the pulsing unit, the gas processing capacity, and the processing efficiency, A control unit that calculates and digitalizes the data; And a manager server provided with a filtration dust collector operation log book log program, wherein the control unit uploads the dust collector operation information to the filter dust collector operation record book log program through wired/wireless communication. According to the present invention, it is possible to collect the operation information of the filtration dust collector and automatically write it to the operation log program without the need for the operator to directly check and enter the work log, and to detect and apply the differential pressure in real time to adjust the re-dusting cycle to apply the entire filtration dust collector. The filtration performance can be further prevented from being reduced, and by detecting the instantaneous differential pressure after each bag filter is exhausted and comparing it, it is possible to more easily detect an abnormal bag filter during the exhaust process and damage the bag filter and reduce dust collection efficiency. Can be reduced.

Description

Filtration and dust collector monitoring system

The present invention relates to a monitoring system of a filtration dust collector, and more specifically, it is possible to collect and record the operation information of a filtration dust collector in an operation recording program automatically without requiring the operator to directly check and fill out a work log, and measure the differential pressure change. It relates to a monitoring system of a filter dust collector that not only adjusts the exhaustion period, but also detects an abnormal bag filter by comparing the instantaneous differential pressure change after exhaustion of each bag filter and adjusts the order and number of exhaustion thereof.

In general, a filter dust collector is a generic name that refers to a device for removing solid or liquid particulates present in the air. Filtration dust collectors have been used to remove soot or dust from exhaust gases such as boilers, roasters, heating furnaces, and waste incinerators as a countermeasure against pollution, and chemical powder manufacturing, iron, wood, cement manufacturing, and other fine dust generation It is used in workplaces, and in addition, in manufacturing industry, it is installed and used for improving the quality of products by cleaning the air in IC processes and pharmaceutical processes.

These filtration dust collectors are divided into mechanical, electrical, dry, or wet depending on the operation method, and have a simple structure (eg, gravity sedimentation chamber, collision dust collector, centrifugal force) until the size of the particles to be removed is about 10 μm. Cyclone, etc.) may be used.

Local governments and environmental management centers affiliated with the local governments have established guidelines to record information on the operation of filtration dust collectors for each workplace that operates filtration dust collectors.In each conventional workplace, managers have information on operation (differential pressure, dust collector) It is a reality that there are still many places where manual time, power consumption, efficiency, etc.) are written and recorded.

Republic of Korea Registered Patent No. 10-1750021 (2017.06.16. registered)

The present invention has been devised to solve the above-described conventional problems, and it is possible to collect the operation information of the filtration dust collector and automatically write it in the operation recorder program without having to manually check and fill in the work log, and measure the differential pressure change. It is an object of the present invention to provide a monitoring system for a filter dust collector that not only regulates the exhaustion period, but also detects an abnormal bag filter by comparing the instantaneous differential pressure change after exhaustion of each bag filter and controls the order and number of exhaustion thereof.

According to an aspect of the present invention, the chamber having a gas inlet and a gas outlet, a differential pressure gauge for measuring a differential pressure between the gas inlet and the outlet, a plurality of workplaces installed a filtration dust collector including a plurality of bag filters sequentially installed in the chamber A dust collector monitoring system, comprising: a pulsing unit supplying compressed air to a plurality of bag filters and pulsing them; Detecting and determining the operation information of the dust collector including the sensing value of the differential pressure gauge, the pulsing re-drive cycle through the driving on/off sensing unit of the pulsing unit, the operating time of the pulsing unit, the power required for the pulsing unit to operate, the gas processing capacity, and the processing efficiency. A control unit that calculates and digitalizes the data; And a manager server provided with a filtration dust collector operation log book log program, wherein the control unit is provided with a monitoring system for a filtration dust collector that uploads the dust collector operation information to the filter dust collector operation record book log program through wired/wireless communication.

The control unit receives the sensing value of the differential pressure gauge in real time, compares the preset differential pressure range and the measured differential pressure detection value, and then applies a preset pulsing restart period corresponding to the preset differential pressure range to perform a restart period of the pulsing unit. It can be adjusted in real time.

The control unit may detect an instantaneous differential pressure change after exhaustion of each of the plurality of bag filters, and based on this, may control the exhaustion order and/or number of times of the plurality of bag filters within each cycle of exhaustion.

The control unit determines whether each of the same is different from each other after receiving the instantaneous differential pressure change through the differential pressure gauge after exhaustion of each bag filter while the exhaustion of the plurality of bag filters is sequentially performed, and the differential pressure is relatively large. When at least one specific bag filter is present, the driving of the pulsing unit may be controlled so as to control the exhaustion order and number of times of the at least one bag filter.

The control unit may control to change the pulsing order of at least one specific bag filter having a relatively large differential pressure to another bag filter, maintain the pulsing order, increase the number of pulsing, or both.

The control unit may adjust the exhaustion order and the number of times of the at least one bag filter when at least one specific bag filter having a relatively large differential pressure exists even after exhaustion of the plurality of bag filters is repeated multiple cycles.

According to the monitoring system of the filtration dust collector of the present invention described above, it is possible to collect the filter dust collector operation information and automatically write it in the operation recording program without the need for the operator to directly check and fill out the work log, and detect the differential pressure in real time to re-dust. By adjusting the cycle, it is possible to further prevent the reduction of the filtration performance of the entire filtration dust collector, and by detecting and comparing the instantaneous differential pressure after exhausting each bag filter, it is possible to further facilitate the detection of the bag filter that has an abnormality during the dust removal operation. It is possible to reduce damage to the bag filter and deterioration of dust collection efficiency.

1 is a view schematically showing a monitoring system of a filtration dust collector according to an embodiment of the present invention,
2 is a view showing a filtration dust collector of a monitoring system of a filtration dust collector according to an embodiment of the present invention,
3 is a graph showing a differential pressure increase according to the operation of the filter dust collector in the monitoring system of the filter dust collector according to an embodiment of the present invention,
4 to 6 are graphs showing fluctuations in air pulsing cycles according to fluctuations in the measured differential pressure of a filtration dust collector in a monitoring system of a filtration dust collector according to an embodiment of the present invention,
7 is a flow chart showing a method for controlling the pulsation filter bag filter in the monitoring system of the filtration dust collector according to an embodiment of the present invention,
8 is a view showing a communication state between the filter dust collector and the manager server in the monitoring system of the filter dust collector according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and the scope of the invention to those skilled in the art is completely It is provided to inform you. The same reference numerals in the drawings refer to the same elements.

The monitoring system of the filtration dust collector according to the preferred embodiment of the present invention can collect the operation information of the filtration dust collector and automatically fill it in the operation log program without having to manually check and fill in the work log, so that operation management is more efficient. It can be easily done. In addition, as it is used for industrial plants, it is possible to more easily detect a bag filter that has an abnormality during exhaustion work, and it is possible to reduce damage to the bag filter and deterioration of dust collection efficiency.

Hereinafter, the present invention will be described in detail with reference to Examples.

1 and 2, the monitoring system of the filtration dust collector according to an embodiment of the present invention includes a chamber 100, a differential pressure gauge 200, a bag filter 300, a pulsing unit 400, and a control unit 500 It includes a filtration dust collector (10), including the administrator server 700.

The chamber 100 has an internal space and a gas inlet 110 through which gas containing dust flows and a gas outlet 120 through which purified gas is discharged are provided. The differential pressure gauge 200 is provided to measure the differential pressure between the gas inlet 110 and the gas outlet 120, and the controller 500 detects the measured value of the differential pressure gauge 200 in real time.

Inside the chamber 100, the gas inlet chamber 130 communicating with the gas inlet 110 and the gas outlet chamber 140 communicating with the gas outlet 120 are partitioned by separate partition walls, and the gas inlet chamber 130 ) And a plurality of bag filters 300 are installed in a state that spans both the gas discharge chamber 140. In the following description and related drawings, for convenience of description (not shown), 10 (columns) bag filters 300 will be described based on a case in which the number of installations can be increased or decreased.

The bag filter 300 filters particles such as dust in the gas introduced through the gas inlet 110 using a cloth as a filter medium, and the gas introduced through the gas inlet 110 passes through a plurality of bag filters 300 The particles are removed and then discharged to the outside through the gas discharge chamber 140 and the gas outlet 120.

As shown in FIG. 2, the pulsing unit 400 supplies compressed air to a plurality of bag filters 300 to air pulsate to exhaust the bag filter 300, and the compressed air tank 410 and each bag A supply path is formed to supply compressed air to the filter 300, and a plurality of compressed air pipes 420 branched into a plurality, an injection nozzle 430 provided on the compressed air pipe 420, and a plurality of compressed air pipes 420 ) Is provided in each solenoid valve 440 to open or block the flow path. The solenoid valve 440 is applicable as a diaphragm type solenoid valve.

In an embodiment of the present invention, the control unit 500 may control the driving of the pulsing unit 400 to reduce damage to the bag filter and deterioration of dust collection efficiency. Particularly, the specific bag filter 300 having an abnormality during dedusting operation may be reduced. The detection can be further facilitated, further reducing damage to the bag filter and deteriorating dust collection efficiency.

On the other hand, for reference, FIG. 3 shows that the differential pressure of the chamber 100 gradually increases as the bag filter exhaustion progresses for several months.

4 to 6, the control unit 500 receives the detection value of the differential pressure gauge 200 in real time, compares the preset differential pressure range (A, B, C) with the measured differential pressure detection value and then displays By applying a preset pulsing re-drive cycle (P1, P2, P3) corresponding to the set differential pressure range (A, B, C), the re-drive cycle of the pulsing unit is adjusted in real time.

Here, the re-drive cycles (P1, P2, P3) means a delay time before the next re-implementation after the exhaustion of the ten bag filters 300 is completed once (1 cycle) through sequential or separate exhaustion sequences. .

Specifically, as shown in FIG. 4, the control unit 500 detects the differential pressure in real time while the ten bag filters 300 are exhausted and the detected differential pressure is within a set range (eg, 50 to 100 mmAq, A) If it is determined that there is, it is possible to control the driving of the pulsing unit 400 to maintain the currently set air pulsing re-drive cycle (for example, 20 to 21 seconds, P1).

In addition, as shown in FIG. 5, the control unit 500 detects the differential pressure in real time while the 10 bag filters 300 are exhausted, and the detected differential pressure exceeds 50 to 100 mmAq and another setting range (for example, If it is judged to be within 100 ~ 200mmAq, B), the currently set air pulsing restart period (e.g. 20 ~ 21 sec, P1) is shortened to 9 ~ 10 sec (P2), for example, and maintained. So that the driving of the pulsing unit 400 can be controlled.

In addition, as shown in FIG. 6, the control unit 500 detects the differential pressure in real time while the 10 bag filters 300 are exhausted, and the detected differential pressure exceeds 100 to 200 mmAq and another setting range (for example, If it is judged to be within 200 ~ 250mmAq, C), the currently set air pulsing restart period (for example, 9 ~ 10 seconds, P2) is shortened to 4 ~ 5 seconds (P3), and the changed state is maintained. So that the driving of the pulsing unit 400 can be controlled.

That is, as the dedusting of the bag filter 300 is repeated many times over a long period of time, the differential pressure between the inlet and outlet of the chamber 100 is forced to gradually increase due to factors such as deterioration of the performance of the bag filter 300. By measuring the differential pressure in real time and shortening and restarting the air pulsing restart period as the detected differential pressure increases, it is possible to prevent the filtration efficiency of the entire precipitator from deteriorating as much as possible.

In the above description, the preset differential pressure range has been described based on three cases of 50 to 100 mmAq, 100 to 200 mmAq, and 200 to 250 mmAq, but this is for convenience of explanation, and the preset differential pressure range may be further refined or changed more widely Can.

In addition, the present invention detects a bag filter in which an abnormality occurs during bag filter exhaustion or particle attachment is more frequent than other bag filters, and the exhaustion order or number of times of this specific bag filter is adjusted or exhaustion order By adjusting both and the number of times, an additional control method is adopted that can further prevent the durability of a specific bag filter and the filtration efficiency of the entire dust collector from being reduced.

Specifically, as shown in FIG. 7, the control unit 500 detects an instantaneous differential pressure change after exhaustion of each of the ten bag filters 300, that is, a total of ten instants during one cycle of bag filter exhaustion. The differential pressure change is sensed, and on the basis of this, the order and/or number of times of exhaustion of the ten bag filters 300 is adjusted within ten bag filter exhaust cycles.

In more detail, the control unit 500 receives the instantaneous differential pressure change after exhausting each of the bag filters 300 through the differential pressure gauge while the exhausting of the ten bag filters 300 is sequentially performed. It is judged whether it is the same or different.

At this time, when the control unit 500 detects that there is at least one relatively large differential pressure among the ten measured instantaneous differential pressures, the specific bag filter 300 corresponding to this is abnormal or the particle is attached compared to other bag filters. It is judged that it is made more frequently and the driving of the pulsing unit 400 is controlled so as to adjust the exhaustion order and number of times of the at least one specific bag filter 300.

For example, the instantaneous differential pressure change after exhaustion of 10 bag filters is the exhaustion of the 4th and 5th bag filters to 0.001, 0.001, 0.001, 0.001, 0.003, 0.004, 0.001, 0.001, 0.001, 0.001 (unit mmAq), respectively. If the momentary pressure difference is different from the others, the order and number of exhaustion of the 4th and 5th bag filters are adjusted.

In the present invention, as described above, the exhaustion order of the 4th and 5th bag filters having a larger instantaneous differential pressure compared to other bag filters is moved forward and the number of times is increased to increase the exhaustion efficiency of a specific bag filter, thereby increasing the overall filter. It can prevent the dust collection efficiency from falling.

For example, the exhaustion of one cycle is completed, and the next cycle is the 5th, 4th, 1st, 2nd, 3rd, 6th, and 7th air pulsing in order from the 1st to 10th bag filters. You can change the order in the order of the 8th, 9th, and 10th bag filters.

In addition, after the exhaustion of one cycle is completed, the order of air pulsing sequentially in the order of the 1st to 10th bag filters is maintained in the next cycle, and the number of times of air pulsing of the 4th and 5th bag filters is applied more than 2 times. It might be. That is, the first bag filter air pulsing once, the second bag filter air pulsing once, the third bag filter air pulsing once, the fourth bag filter air pulsing twice, the fifth bag filter air pulsing twice, the sixth bag filter The order of air pulsing once, air pulsing once in the seventh bag filter, air pulsing once in the eighth bag filter, air pulsing once in the ninth bag filter, and air pulsing once in the tenth bag filter can be applied.

In addition, the control unit may control the bag filter exhaustion to include both the former (adjustment of the exhaustion order) and the latter (adjustment of the number of exhaustions).

In an embodiment of the present invention, the control unit 500, even if the exhaust of the plurality of bag filters 300 is repeated multiple cycles, as described above, if at least one specific bag filter having a relatively large differential pressure is present, at least Adjust the exhaustion order and frequency of one bag filter. Therefore, it is possible to more reliably check whether or not a specific bag filter is abnormal, thereby reducing the efficiency of the dust collector.

Hereinafter, a method for controlling pulsing of a bag filter of a filtration dust collector will be described.

2 and 7, the method for controlling the bag filter pulsing in the filter dust collector monitoring system according to the embodiment of the present invention includes a chamber 100 having a gas inlet 110 and a gas outlet 120, and a gas inlet As for the pulsing bag filter of a filter dust collector including a differential pressure gauge (200) measuring a differential pressure between the (110) and the gas outlet (120), and a plurality of bag filters (300) sequentially installed in the chamber (100), the bag filter Sequential exhaustion step (S100), real-time control of the re-drive cycle of the pulsing unit 400 (S200), instantaneous differential pressure change after each filter exhaust (S300), pulsing sequence and number adjustment step (S400). .

First, the plurality of bag filters 300 are sequentially exhausted (S100).

Next, the control unit 500 receives the detection value of the differential pressure gauge 200 in real time, compares the preset differential pressure range and the measured differential pressure detection value, and then applies a preset pulsing re-drive cycle corresponding to the preset differential pressure range to the pulsing unit The re-drive cycle of 400 is adjusted in real time (S200). Here, the re-drive cycle corresponds to a delay time until exhaustion of the plurality of bag filters 300 is completed once in a sequential or separate exhaustion sequence, and then re-executed, and detailed description thereof will be omitted below.

Next, the control unit 500 determines whether the mutual difference is the same or different after receiving the instantaneous differential pressure change after the exhaust of each bag filter 300 through the differential pressure gauge 200 (S300).

Subsequently, when at least one specific bag filter 300 having a relatively large differential pressure exists, the control unit 500 changes the pulsing order of the at least one bag filter 300 to another bag filter, or the pulsing order. Maintain and increase the number of pulses or control to include both (S400).

Here, in step S400, the exhaustion of the plurality of bag filters 300 is performed even when at least one specific bag filter having a relatively large differential pressure is present even after repeated multiple cycles of at least two or more times.

1 and 8, in an embodiment of the present invention, the control unit 500 includes a sensing value of the differential pressure gauge 200, a pulsing re-drive cycle through a driving on/off sensing unit of the pulsing unit 400, a pulsing unit ( The operation time of 400), the power consumption according to the operation of the pulsing unit 400, the gas processing capacity, and the operation information of the dust collector including the processing efficiency are detected, judged, calculated, and digitalized.

The control unit 500 receives the above-described dust collector operation information and stores it as digital numerical information in a separate memory. Specifically, the pulsing re-drive cycle can be obtained through on/off detection of the solenoid valve 440, and the required power is the required power and the intake/exhaust fan for gas intake and exhaust according to the operation of each component of the pulsing unit (not shown). ) Can be obtained by sensing the driving power, and the gas processing capacity can be obtained by receiving the sensing value of the flow sensor 160 installed in the gas inlet 110 or gas outlet 120, and the processing efficiency is separate. Can be obtained through the calculation formula. The gas treatment capacity can be obtained by dividing it by hour, day, and month.

The manager server 700 is provided in each of a plurality of workplaces in which the filtration dust collector 10 is installed, and a filtration dust collector operation recording log journal program 710 is provided.

In the present invention, the control unit 500 is connected to the manager server 700 through a wired/wireless communication network, and uploads the operation information of the dust collector to the filtration dust collector operation recording log journal program 710 through wired/wireless communication. Therefore, the present invention can collect the operation information of the filtration dust collector and automatically write it in the operation recorder program without the need for the operator to directly check and fill in the work log, thereby making operation management more efficient and easy.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto, and is limited by the claims below. Therefore, one of ordinary skill in the art can variously modify and modify the present invention without departing from the technical spirit of the claims to be described later.

10: filtration dust collector 100: chamber
160: flow sensor 200: differential pressure gauge
300: bag filter 400: pulsing part
440: solenoid valve 500: control
700: Manager server 710: Operation log journal program

Claims (6)

A chamber 100 as a single compartment having a gas inlet 110 and a gas outlet 120, a differential pressure gauge 200 for measuring a differential pressure between the gas inlet and the outlet, n bag filters 300 sequentially installed in the chamber A filtration dust collector monitoring system of a number of workplaces in which the filtration dust collector 10 is installed, comprising:
A pulsing unit 400 for supplying compressed air to the n bag filters 300 and pulsing them;
A dust collector that includes the sensing value of the differential pressure gauge 200, a pulsing re-drive cycle through the driving on/off sensing unit of the pulsing unit 400, the operating time of the pulsing unit, the power required by the operation of the pulsing unit, the gas processing capacity, and the processing efficiency. A control unit 500 for digitally digitizing operation information by detecting, determining, and calculating operation information; And
Filtration dust collector operating record journal program 710 includes an administrator server 700 is provided,
The control unit 500 uploads the operation information of the dust collector to the filtration dust collector operation recording unit log program 710 through wired/wireless communication,
The control unit 500 receives the instantaneous differential pressure change through the differential pressure gauge n times after exhaustion of each bag filter while the exhausting of the n bag filters 300 is sequentially performed. If at least one specific bag filter having a relatively large differential pressure is present based on the determination result, the exhaustion order and exhaustion of the at least one specific bag filter within one exhaustion cycle in which exhaustion of n bag filters is completed Control the driving of the pulsing unit to adjust the number of times,
The control unit 500, the monitoring system of the filtration dust collector to control the increase in the number of exhaustion while changing the exhaustion order of at least one specific bag filter having a relatively large differential pressure to another bag filter. According to claim 1,
The control unit 500 receives the detection value of the differential pressure gauge 200 in real time, compares the preset differential pressure range with the measured differential pressure detection value, and applies a preset pulsing re-drive cycle corresponding to the preset differential pressure range. A filtration dust collector monitoring system characterized by adjusting the re-drive cycle of the pulsing section in real time. delete delete delete According to claim 1,
The control unit 500, the exhaustion order of the at least one bag filter when the at least one specific bag filter having a relatively large differential pressure is present even after the exhaustion of the n bag filters 300 is repeated multiple cycles And a dust collecting monitoring system for controlling the number of times of exhaustion.

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