KR20200025498A - Filtration and dust collector monitoring system - Google Patents

Abstract

A filter dust collector monitoring system is disclosed. The filter dust collector monitoring system according to the present invention, as a filter dust collector monitoring system of many workshops in which a filter dust collector including a chamber having a gas inlet and a gas outlet, a differential pressure gauge measuring a differential pressure between the gas inlet and the gas outlet, and a plurality of bag filters sequentially installed inside the chamber is installed, includes: a pulsing unit supplying compressed air to the plurality of bag filters to pulse the compressed air; a control unit sensing, deciding, calculating and digital digitizing dust collector operating information including sensing values of the differential pressure gauge, a pulsing redriving cycle through a driving on/off sensing part of the pulsing unit, operating time of the pulsing unit, and power consumption, gas treatment capacity and treatment efficiency according to operation of the pulsing unit; and a manager server having a filter dust collector operation-daily recording book program, wherein the control unit uploads the dust collector operating information in the filter dust collector operation-daily recording book program through wired and wireless communications. The filter dust collector monitoring system according to the present invention enables filter dust collector operating information to be automatically recorded in the operation recording book program by collecting the filter dust collector operating information without a need for an operator to directly confirm or record a work book; can still more prevent a decrease in filtration performance of the entire filter dust collector by detecting a differential pressure in real time to adjust a re-dedusting cycle, thereby applying the adjusted re-dedusting cycle; and can still more facilitate sensing of bag filters having abnormalities occurred therein during dedusting operation and can reduce damages or dust collection efficiency drop of the bag filters by dedusting each of the bag filters, sensing instantaneous differential pressure values, and comparing the instantaneous differential pressure values.

Description

Filtration and dust collector monitoring system

The present invention relates to a monitoring system for a filter dust collector, and more particularly, it is possible to collect the filter dust collector operation information automatically and fill it into the operation log program without the need for the operator to directly check and write a work log. The present invention relates to a monitoring system for a bag filter, which not only adjusts the cycle of exhaustion but also compares the differential differential pressure after exhaustion of each bag filter to detect a bag filter in which an abnormality occurs and to control the order and frequency of the bag filters.

In general, the bag filter is a general name for a device for removing solid or liquid particulates present in the air. Filtering devices have been used to remove soot and dust from exhaust gases such as boilers, roasting furnaces, heating furnaces, and waste incinerators as a countermeasure against pollution, and produce large amounts of chemical powder, steelmaking, wood, cement, and other fine dust. In addition, it is used in the workshop, and in the manufacturing industry, it is installed and used for improving the quality of products by clean air in IC process, pharmaceutical process, etc.

Such filter dust collector is divided into mechanical, electrical, dry or wet depending on the operation method, and the mechanical structure (for example, gravity settling chamber, impact type dust collector, centrifugal force) is simple as long as the size of the particles to be removed is about 10 μm. Cyclone, etc.) methods may be used.

Local governments and environmental management centers of local governments have set up relevant guidelines to record the information about the operation of the dust collector at each workplace where the dust collector is operated.In the conventional workshops, managers have information on operations (differential pressure, dust collector). It is a reality that there are still many places that record and record driving time, power consumption, efficiency, etc. by hand.

Republic of Korea Patent No. 10-1750021 (Registered June 16, 2017)

The present invention has been made to solve the above-mentioned conventional problems, the operator can collect the filter dust collector operation information and automatically fill in the operation log program without the need for the operator to directly check and write the work log, measuring the differential pressure change It is an object of the present invention to provide a monitoring system of a filter dust collector that not only adjusts the cycle of exhaustion but also compares the instantaneous differential pressure change after exhaustion of each bag filter to detect an abnormal bag filter and to control the order and number of exhaustion thereof.

According to an aspect of the present invention, a chamber having a gas inlet and a gas outlet, a differential pressure gauge for measuring the differential pressure between the gas inlet and outlet, filtration in a number of workplaces are provided with a filter dust collector including a plurality of bag filters sequentially installed in the chamber A dust collector monitoring system, comprising: a pulsing unit for pulsing by supplying compressed air to a plurality of bag filters; Detect and determine the dust collector operation information including the detected value of the differential pressure gauge, the pulsing re-drive cycle through the driving on-off detection unit of the pulsing unit, the operating time of the pulsing unit, the power required according to the operation of the pulsing unit, gas processing capacity, processing efficiency, A control unit for calculating and digitizing; And a manager server provided with a filter dust collector operation log journal program, wherein the controller is configured to upload the dust collector operation information to the filter dust collector operation log journal program through wired or wireless communication.

The control unit may receive the detected value of the differential pressure gauge in real time, compare a preset differential pressure range with a measured differential pressure detection value, and apply a preset pulsing redrive cycle corresponding to the preset differential pressure range to determine a re-drive cycle of the pulsing unit. Can be adjusted in real time.

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

The controller may be configured to determine whether each of the bag filters is equal to or different from each other after receiving the instantaneous differential pressure change after the exhaustion of each bag filter through the differential pressure gauge while the exhaustion of the plurality of bag filters is sequentially performed. When there is at least one specific bag filter, the driving of the pulsing unit may be controlled to adjust the order and number of exhaustion of the at least one bag filter.

The controller may change the pulsing order of the at least one particular bag filter having a relatively large differential pressure before another bag filter, maintain the pulsing order, increase the number of pulsing, or include both.

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

According to the monitoring system of the filter dust collector of the present invention described above, the filter dust collector operation information can be collected and automatically written into the operation log program without the operator checking and writing the work log, and the differential pressure can be detected in real time and re-dusted. By adjusting the period, it is possible to further prevent the reduction of the filtration performance of the whole filter dust collector, and to detect the instantaneous differential pressure after each bag filter exhaustion and to compare it, thereby making it easier to detect the bag filter that has an abnormality during the dust removal operation. In addition, damage to the bag filter and a reduction in dust collection efficiency can be reduced.

1 is a view schematically showing a monitoring system of the filter dust collector according to an embodiment of the present invention,
2 is a view showing a filter dust collector of the monitoring system of the filter dust collector according to an embodiment of the present invention,
Figure 3 is a graph showing the appearance of the differential pressure increases as the filter dust collector in the monitoring system of the filter dust collector according to an embodiment of the present invention,
4 to 6 is a graph showing the variation of the air pulse period according to the measured differential pressure variation of the filter dust collector in the monitoring system of the filter dust collector according to an embodiment of the present invention,
7 is a flowchart illustrating a method for controlling the bag filter pulsing of the bag filter in the monitoring system of the bag filter according to the 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, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you. In the drawings, like reference numerals refer to like elements.

The monitoring system of the filter dust collector according to the preferred embodiment of the present invention can collect the filter dust collector operation information and automatically fill it into the operation log program without the operator checking and writing the work log. It can be done easily. In addition, as it is used for industrial plants, it is possible to more easily detect a bag filter in which an abnormality occurs during the dust removal operation, and reduce breakage and deterioration of dust collection efficiency of the bag filter.

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

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

The chamber 100 has an inner space and is provided with a gas inlet 110 through which gas including dust is introduced and a gas outlet 120 through which the purified gas is discharged. 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.

In the chamber 100, a gas inlet chamber 130 communicating with the gas inlet 110 and a 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 covering all of the gas discharge chamber 140. In the following description and related drawings, for convenience of description (not shown), a description will be made based on the case in which ten bag filters 300 are installed, and the number of installation thereof may be increased or decreased.

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

As shown in FIG. 2, the pulsing unit 400 supplies compressed air to the plurality of bag filters 300 to depulsate the bag filter 300 by air pulsing the compressed air tanks 410 and respective bags. A plurality of compressed air pipes 420, a plurality of compressed air pipes 420, injection nozzles 430 provided on the compressed air pipes 420, and a plurality of compressed air pipes 420, which form a supply path so as to supply compressed air to the filter 300. It is provided in each of the) includes a solenoid valve 440 for opening or closing the flow path. The solenoid valve 440 is applicable to 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 the damage of the bag filter and the deterioration of dust collection efficiency. Sensing can be further facilitated, which can further reduce damage to the bag filter and reduction in dust collection efficiency.

On the other hand, Figure 3 shows that the differential pressure of the chamber 100 gradually increases as bag filter exhaustion proceeds 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, The resetting period of the pulsing portion is adjusted in real time by applying the preset pulsing reactivation periods P1, P2, and P3 corresponding to the set differential pressure ranges A, B, and C.

Here, the re-drive cycle (P1, P2, P3) means the delay time until the exhaustion of the 10 bag filter 300 is completed once (one cycle) as a whole through the sequential or separate exhaustion order before the next re-execution. .

Specifically, as shown in FIG. 4, the control unit 500 detects the differential pressure in real time while the 10 bag filters 300 are exhausted, and the detected differential pressure is within a setting range (for example, 50 to 100 mmAq, A). If it is determined to be present, it is possible to control the driving of the pulsing unit 400 to maintain the current initially set air pulsing re-drive cycle (for example 20 ~ 21 seconds, P1).

In addition, as shown in FIG. 5, the control unit 500 detects the differential pressure in real time during the exhaustion of the ten bag filters 300 so that the detected differential pressure exceeds 50 to 100 mmAq and another setting range (for example, If it is determined to be within 100 to 200 mmAq, B), the currently set air pulsing restart period (for example, 20 to 21 seconds, P1) is shortened to 9 to 10 seconds (P2) and maintained. The driving of the pulsing unit 400 may be controlled.

In addition, as shown in FIG. 6, the control unit 500 detects the differential pressure in real time during the exhaustion of the ten bag filters 300 so that the detected differential pressure exceeds 100 to 200 mmAq and another setting range (for example, If it is determined to be within 200 to 250mmAq, C), the currently set air pulsing restart period (for example, 9 to 10 seconds, P2) is shortened to 4 to 5 seconds (P3) and maintained. The driving of the pulsing unit 400 may be controlled.

That is, as the exhaustion of the bag filter 300 is repeated many times over a long period of time, the pressure difference between the inlet and the outlet of the chamber 100 may gradually increase due to factors such as deterioration of the performance of the bag filter 300. As the differential pressure is measured in real time and the detected differential pressure increases, the air pulsing re-drive cycle is shortened and restarted, thereby preventing the filtration efficiency of the entire dust collector from being lowered 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 description, and the preset differential pressure range may be further refined or more widely changed. Can be.

The present invention also detects a bag filter in which an abnormality occurs during bag filter exhaustion or particle attachment is more frequent than other bag filters, and adjusts the order or number of exhaustion of the specific bag filter or the order of exhaustion. By controlling both and the number of times, an additional control method is adopted to further prevent the durability of a particular bag filter and reduce the filtration efficiency of the entire dust collector.

Specifically, as shown in FIG. 7, the control unit 500 detects an instantaneous differential pressure change after exhausting 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 based on this, the exhaustion order and / or the frequency of the exhaustion of the 10 bag filters 300 are adjusted within the 10 bag filter exhaustion cycles.

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

In this case, when the controller 500 detects that at least one of the 10 measured instantaneous differential pressures has a relatively large differential pressure, the specific bag filter 300 may have an abnormality or may have particle adhesion as compared with other bag filters. It is determined to be made more frequently and to control the driving of the pulsing unit 400 to adjust the order and number of exhaustion of the at least one particular bag filter 300.

For example, after the 10 bag filters are exhausted, the instantaneous differential pressure change is 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 instantaneous differential pressure is different from the others, adjust the exhaustion order and the number of times of the fourth and fifth bag filters.

In the present invention, as described above, the exhaustion order of the fourth and fifth bag filters, which have a relatively large instantaneous differential pressure as compared with other bag filters, is moved forward, and the number of times is increased to increase the dust removal efficiency of a specific bag filter. The fall of dust collection efficiency can be prevented.

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

In addition, after one cycle of exhaustion is completed, the order of air pulsing in order from the first to the tenth bag filter is maintained in the next cycle, and the number of air pulsing of the fourth and fifth bag filters is applied two or more times. It may be. 1st bag filter 1 time air pulsing, 2nd bag filter 1 time air pulsing, 3rd bag filter 1 time air pulsing, 4th bag filter 2 air pulsing, 5th bag filter 2 times air pulsing, 6th bag filter The order of 1 time air pulse, 7th bag filter 1 air pulse, 8th bag filter 1 air pulse, 9th bag filter 1 air pulse, 10th bag filter 1 air pulse can be applied.

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

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

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

As shown in Figures 2 and 7, the bag filter pulsing control method in the bag filter monitoring system according to an embodiment of the present invention, the chamber 100 having a gas inlet 110 and the gas outlet 120, gas inlet The present invention relates to a bag filter pulsing apparatus for a bag filter including a differential pressure gauge 200 measuring a differential pressure between the 110 and a gas outlet 120, and a plurality of bag filters 300 sequentially installed in the chamber 100. Sequential dedusting step (S100), the real-time control step of the re-drive cycle of the pulsing unit 400 (S200), after each bag filter exhausted instantaneous differential pressure change check step (S300), the pulsing order and the number adjustment step (S400) .

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

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

Next, the control unit 500 receives the instantaneous differential pressure change after the exhaustion of each bag filter 300 through the differential pressure gauge 200, and then determines whether each is the same or different (S300).

Subsequently, when there is at least one specific bag filter 300 having a relatively large differential pressure, the controller 500 may change the pulsing order of the at least one bag filter 300 before another bag filter, or the pulsing order may be Maintain and increase the number of pulsing or control to include both (S400).

Here, step S400 may be performed when at least one specific bag filter having a relatively large differential pressure exists even after the exhaustion of the plurality of bag filters 300 is repeated at least two times.

1 and 8, in the 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, and a pulsing unit ( It detects, determines, and calculates the dust collector operation information including the operating time of 400, power required according to the operation of the pulsing unit 400, gas processing capacity, and processing efficiency, and digitalizes it.

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

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

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

While the invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the invention is not limited thereto, but is defined by the claims that follow. Accordingly, one of ordinary skill in the art may variously modify and modify the present invention without departing from the spirit of the appended claims.

10: filtration dust collector 100: chamber
160: flow sensor 200: differential pressure gauge
300: bag filter 400: pulsing unit
440: solenoid valve 500: control unit
700: administrator server 710: operation log book program

Claims (6)

A chamber 100 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, and a plurality of bag filters 300 sequentially installed in the chamber. As a dust collector monitoring system of a number of workplaces in which the filter dust collector 10 is installed,
A pulsing unit 400 for supplying compressed air to the plurality of bag filters 300 and pulsing them;
Dust collector including a sensed value of the differential pressure gauge 200, a pulsing re-drive cycle through the drive on and off detection of the pulsing unit 400, the operating time of the pulsing unit, the power required according to the operation of the pulsing unit, gas processing capacity, processing efficiency A control unit 500 for sensing, determining, and calculating operation information to digitally digitize the operation information; And
Including a manager server 700 is provided with a filter dust collector operation log journal program 710,
The control unit 500, the dust collector operation information uploading to the filter dust collector operation record log program 710 through the wired or wireless communication monitoring system of the filter dust collector. The method of claim 1,
The controller 500 receives the detected value of the differential pressure gauge 200 in real time, compares a preset differential pressure range with a measured differential pressure detection value, and applies a preset pulsing re-drive cycle corresponding to the preset differential pressure range. Monitoring system for a bag filter, characterized in that for adjusting the re-drive cycle of the pulsing section in real time. The method of claim 2,
The control unit 500 detects an instantaneous differential pressure change after the exhaustion of each of the plurality of bag filters 300 and adjusts the exhaustion order and / or the number of exhaustion of the plurality of bag filters in each cycle of exhaustion of the plurality of bag filters based on this. The monitoring system of the filter dust collector, characterized in that. The method of claim 3,
The control unit 500,
While the exhaustion of the plurality of bag filters 300 is sequentially performed, after receiving the instantaneous differential pressure change through the differential pressure gauge 200 after the exhaustion of each bag filter, it is determined whether they are the same or different from each other. And controlling the driving of the pulsing unit (400) to adjust the number of dust removal order and the number of dust removal of the at least one bag filter when the at least one specific bag filter is large. The method of claim 4, wherein
The control unit 500 controls to change the pulsing order of at least one particular bag filter having a relatively large differential pressure before another bag filter, maintain the pulsing order, increase the number of pulsing, or include both. The monitoring system of the filter dust collector, characterized in that. The method of claim 4, wherein
The control unit 500 may perform the exhaustion sequence of the at least one bag filter when the at least one bag filter having a relatively large differential pressure exists even after exhaustion of the plurality of bag filters 300 is repeated a plurality of cycles. Monitoring system of the filter dust collector, characterized in that to control the.

Images