CN118817156A - Bag leak detection method and device for dust collector system, and dust collector system - Google Patents

Abstract

The present application relates to the technical field of bag dust collectors, and discloses a bag leak detection method and device for a dust collector system, and a dust collector system. The dust collector system includes a plurality of dust boxes, each of which includes a clean air chamber and a dust air chamber, and a plurality of rows of bags are arranged in the clean air chamber. The bag leak detection method includes: drawing a first dust change curve of each dust box in the dust collector system in a first time period; confirming the dust situation in each dust box according to the first dust change curve; in the case of dust leakage in the current dust box, determining the current dust box as the target dust box, and drawing a second dust change curve that can reflect the dust data change of each row of bags in the target dust box when working in the second time period; determining the bag row with leakage in the target dust box according to the second dust change curve. The present application can automatically detect whether there is leakage in the bags in the dust collector system, and can accurately locate the bags with leakage.

Description

Bag leak detection method and device for dust collector system, and dust collector system

Technical Field

The present application relates to the technical field of bag dust collectors, for example, to a bag leak detection method and device for a dust collector system, and a dust collector system.

Background Art

During the electrolytic aluminum production process, the flue gas produced contains a large amount of fluoride. Since fluoride ions are essential substances for electrolytic aluminum production, it is necessary to design corresponding mechanisms to collect fluoride in the flue gas.

In the related technology, a dust collector system is set up. The flue gas is gathered into the dust gas chamber of each dust removal box in the dust collector system through the flue. The characteristic of alumina in adsorbing fluoride is utilized to first mix the alumina with the flue gas, and then the alumina is recovered by bag dust removal, thereby realizing the recovery and reuse of fluoride in the flue gas.

In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

After long-term operation, the bags in the dust collector system are prone to damage, resulting in a waste of fluoride resources. Since the dust collector system includes multiple dust boxes, each of which is equipped with multiple bags, manual monitoring and troubleshooting of leaking bags is time-consuming and laborious. Therefore, there is an urgent need for a solution that can detect whether there is a leak in the bags in the dust collector system and accurately locate the leaking bags.

Summary of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key/critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

The embodiments of the present disclosure provide a bag leak detection method and device for a dust collector system, and a dust collector system, which can detect whether there is a leak in the bag in the dust collector system and can accurately locate the bag with a leak.

In some embodiments, the dust collector system includes multiple dust boxes, each dust box includes a clean air chamber and a dust air chamber, and multiple rows of bags are arranged in the clean air chamber. The bag leakage detection method for the dust collector system includes: drawing a first dust change curve for each dust box in the dust collector system in a first time period; confirming the dust situation in each dust box according to the first dust change curve; when there is dust leakage in the current dust box, determining the current dust box as the target dust box, and drawing a second dust change curve that can reflect the dust data changes of each row of bags in the target dust box when working in a second time period; determining the bag row with leakage in the target dust box according to the second dust change curve.

Optionally, the first duration is 180 min to 200 min; and/or the second duration is 20 min to 30 min.

Optionally, the air inlet of each row of bags is connected to the compressed air main pipe through a blowing valve; a first dust change curve of each dust box in the dust collector system in the first time period is drawn, including: collecting the first dust data of each dust box after the blowing valve completes the blowing action for the fourth time period at every third time period; and drawing the first dust change curve based on the first dust data.

Optionally, the third duration is 75s to 85s; and/or the fourth duration is 25s to 30s.

Optionally, the air inlet of each row of bags is connected to the compressed air main pipe through a spray valve; a second dust change curve is drawn which can reflect the change of dust data when each row of bags in the target dust removal box is working, including: collecting the second dust data in the target dust removal box at every fifth time interval; collecting the time data of each spray valve action in the second time period; and drawing the second dust change curve based on the second dust data and the time data.

Optionally, the fifth time duration is 1s to 5s.

Optionally, the dust situation in each dust removal box is confirmed based on the first dust change curve, including: when there are a set number of curve segments exceeding the dust threshold in the first dust change curve of the current dust removal box, confirming that there is dust leakage in the current dust removal box; when the first dust change curves of the current dust removal box are all lower than the dust threshold, confirming that there is no dust leakage in the current dust removal box.

Optionally, determining whether there is a leaking bag row in the target dust removal box according to the second dust change curve includes: determining the spray valve corresponding to the curve segment in the second dust change curve that exceeds the dust threshold, and determining the spray valve as the target spray valve; determining the bag row connected to the target spray valve as the bag row with a leak.

Optionally, the bag leak detection method also includes: collecting flow data of the compressed air main pipe in each dust removal box and action signal data of each spray valve; and determining the fault condition of the spray valve in the dust removal box based on the flow data and the action signal data.

Optionally, the bag leak detection method also includes: collecting first pressure data of the negative pressure pipe of the clean air chamber and second pressure data of the negative pressure pipe of the dust gas chamber after the spray valve in each dust removal box completes the spraying action for the fourth time period; calculating the current pressure difference between the second pressure data and the first pressure data; calculating the pressure difference between the current pressure difference and the initial pressure difference, and determining that the bag in the dust removal box is blocked when the pressure difference is greater than the product of the set coefficient and the initial pressure difference.

In some embodiments, the dust collector system includes multiple dust boxes, each dust box includes a clean air chamber and a dust air chamber, and multiple rows of bags are arranged in the clean air chamber. The bag leakage detection device for the dust collector system includes: a drawing module, configured to draw a first dust change curve of each dust box in the dust collector system in a first time period; a confirmation module, configured to confirm the dust situation in each dust box according to the first dust change curve; the drawing module is also configured to determine the current dust box as the target dust box when there is dust leakage in the current dust box, and draw a second dust change curve that can reflect the dust data changes of each row of bags in the target dust box when working in a second time period; the confirmation module is also configured to determine the bag row with leakage in the target dust box according to the second dust change curve.

In some embodiments, a bag leak detection device for a dust collector system includes a processor and a memory storing program instructions, and the processor is configured to execute the bag leak detection method for a dust collector system as described above.

In some embodiments, a dust collector system includes: multiple dust boxes, each dust box includes a clean air chamber and a dusty air chamber, and multiple rows of bags are arranged in the clean air chamber; the air inlet of each row of bags is connected to the compressed air main pipe through a spray valve; the bag leak detection device for the dust collector system as mentioned above is installed on the box body of any dust box.

The bag leak detection method and device for a dust collector system and the dust collector system provided in the embodiments of the present disclosure can achieve the following technical effects:

In the embodiment of the present disclosure, based on the first dust change curve of each dust box in the dust collector system in the first time length, it is possible to detect whether there is a dust box with dust leakage in the dust collector system. In this way, it is possible to detect whether there is a bag leakage in the dust collector system. When it is determined that there is a dust leakage in the dust box, the row of bags with leakage in the dust box can be determined based on the second dust change curve that is drawn and can reflect the change of dust data of each row of bags in the dust box when working in the second time length. In this way, the precise positioning of the bags with leakage is achieved, and the difficulty of manually troubleshooting and repairing the bags with leakage is reduced. It can be seen that the bag leakage detection method for the dust collector system provided in the embodiment of the present disclosure can automatically detect whether there is a leakage in the bags in the dust collector system, and can accurately locate the bags with leakage.

The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

FIG1 is a schematic diagram of a dust collector system provided by an embodiment of the present disclosure, which only illustrates one dust removal box;

FIG2 is a schematic diagram of a bag leak detection method for a dust collector system provided by an embodiment of the present disclosure;

FIG3 is a schematic diagram of a first dust variation curve provided by an embodiment of the present disclosure;

FIG4 is a schematic diagram of a second dust variation curve provided by an embodiment of the present disclosure;

FIG5 is a schematic diagram of another second dust variation curve provided by an embodiment of the present disclosure;

FIG6 is a schematic diagram of a bag leak detection device for a dust collector system provided by an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of another bag leak detection device for a dust collector system provided in an embodiment of the present disclosure.

Description of reference numerals:

10. Dust collector system;

100, dust removal box; 110, clean air chamber; 111, cloth bag; 112, spray valve; 120, dust air chamber; 130, flow meter; 140, dust detection element; 150, pressure gauge;

200. Desulfurization tower;

300, to the fluorine-containing alumina warehouse;

600 (700), bag leak detection device for dust collector system; 601, drawing module; 602, confirmation module; 701, processor; 702, memory; 703, communication interface; 704, bus.

DETAILED DESCRIPTION

In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

Unless otherwise stated, the term "plurality" of a feature means two or more.

In the embodiment of the present disclosure, the character "/" feature indicates that the preceding and following objects are in an "or" relationship. For example, the A/B feature indicates: A or B.

The term "and/or" is a description of the association relationship between objects, and the characteristic indicates that there can be three relationships. For example, A and/or B, the characteristic indicates: A or B, or, A and B.

The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

The dust collector system 10 provided by the embodiment of the present disclosure is shown in FIG. 1 . The dust collector system 10 includes a plurality of dust removal boxes 100 and a bag leak detection device 600 ( 700 ) for the dust collector system. FIG. 1 only shows one dust removal box 100 .

Specifically, each dust removal box 100 includes a clean air chamber 110 and a dust air chamber 120. A plurality of rows of bags 111 are arranged in the clean air chamber 110. The air inlet of each row of bags 111 is connected to the compressed air main pipe through a spray valve 112. A flow meter 130 is arranged in the compressed air main pipe to detect the flow data of the compressed air main pipe. The bag leak detection device 600 (700) for the dust collector system is installed in the box body of any dust removal box 100.

Optionally, the dust collector system 10 further includes a desulfurization tower 200 , which is connected to the clean air chamber 110 via a pipeline, and a dust detection element 140 is provided in the pipeline, and the dust detection element 140 is used to detect dust data in the dust removal box 100 .

Optionally, the dust collector system 10 further includes a fluorine-carrying aluminum oxide bin 300 , which is connected to the dust gas chamber 120 via a pipeline for recovering aluminum oxide after reacting with the flue gas.

Optionally, the dust collector system 10 also includes a pressure gauge 150, which is connected to the negative pressure pipeline of the clean air chamber 110 and the negative pressure pipeline of the dust air chamber 120, and is used to detect pressure data of the negative pressure pipeline of the clean air chamber 110 and the negative pressure pipeline of the dust air chamber 120.

Optionally, the bag leak detection device for the dust collector system includes a processor, which can draw a first dust change curve of each dust box in the dust collector system in a first time period based on the collected dust data in the dust box at regular intervals. The dust situation in each dust box can be confirmed based on the first dust change curve. In the case of dust leakage in the current dust box, the processor can draw a second dust change curve that can reflect the change of dust data in each row of bags in the current dust box during operation in the second time period, and determine the bag row with leakage in the target dust box based on the second dust change curve.

In combination with the above-mentioned dust collector system, the embodiment of the present disclosure provides a bag leak detection method for the dust collector system, as shown in FIG2 , the bag leak detection method includes:

S201, the processor draws a first dust change curve of each dust removal box in the dust collector system at a first time length.

Specifically, a dust detection component is provided in the connecting pipeline between the clean air chamber and the desulfurization tower. The processor can periodically collect dust data in the dust removal box through this dust detection component. After the time for collecting dust data reaches a first time, the first dust change curve can be generated with the dust data as the vertical axis and the time data as the horizontal axis.

Specifically, the dust data is the concentration of dust in the connecting pipeline between the clean air chamber and the desulfurization tower.

Specifically, since only the dust data at a certain time point in the dust box is collected to determine whether there is dust leakage in the dust box, the risk of misjudgment is relatively high. Therefore, the first dust change curve of the dust box at the first time length is drawn in the embodiment of the present disclosure. In this way, the risk of subsequent misjudgment of dust leakage in the dust box is reduced.

Optionally, the first duration is 180 minutes to 200 minutes.

Optionally, the air inlet of each row of bags is connected to the compressed air main pipe through a blowing valve; a first dust change curve of each dust box in the dust collector system in the first time period is drawn, including: collecting the first dust data of each dust box after the blowing valve completes the blowing action for the fourth time period at every third time period; and drawing the first dust change curve based on the first dust data.

Specifically, since the first dust variation curve is drawn in order to preliminarily determine whether there is dust leakage in the dust removal box, the first dust data in each dust removal box may be collected at relatively long intervals.

Optionally, the third duration is 75s to 85s.

Specifically, after the fourth duration of the blowing action of the blowing valve is completed, the blowing valve is completely closed, which will not cause dust data fluctuations, and the dust fluctuations caused by the blowing have also stabilized. Therefore, the processor collects the first dust data after the fourth duration of the blowing action of the blowing valve is completed. In this way, the accuracy of the collected first dust data is improved.

Specifically, multiple rows of bags in the dust removal box work in sequence, and whether each row of bags works is controlled by the spray valve connected to it. The duration of the spray valve is usually about 0.4s, and the interval between the two spray valves is usually 40s to 45s. Therefore, the fourth duration can be set to 25s to 30s, and specifically can be set to 30s. Specifically, setting the fourth duration to 30s can ensure that the spray valve is completely closed and the dust fluctuation caused by the spray has stabilized.

S202: The processor confirms the dust condition in each dust removal box according to the first dust change curve.

Specifically, based on the first dust change curve, the change of dust concentration in each dust removal box within a period of time (i.e., the first time period) can be determined. If the dust concentration continues to be higher than the dust threshold during this period of time, it indicates that there is dust leakage in the dust removal box. Therefore, the processor can confirm whether there is dust leakage in each dust removal box according to the first dust change curve.

Optionally, the dust situation in each dust removal box is confirmed based on the first dust change curve, including: when there are a set number of curve segments exceeding the dust threshold in the first dust change curve of the current dust removal box, confirming that there is dust leakage in the current dust removal box; when the first dust change curves of the current dust removal box are all lower than the dust threshold, confirming that there is no dust leakage in the current dust removal box.

Specifically, if there are a set number of curve segments exceeding the dust threshold in the first dust change curve of the current dust removal box, it indicates that the dust concentration in the current dust removal box is higher than the normal dust concentration for most of the time in the first time period. Therefore, in this case, it can be determined that there is dust leakage in the current dust removal box.

Specifically, if the first dust change curve of the current dust removal box is lower than the dust threshold, it indicates that the dust concentration in the current dust removal box is within the normal dust concentration range within the first time period. Therefore, in this case, it can be determined that there is no dust leakage in the current dust removal box.

Optionally, the dust threshold includes a first dust threshold and a second dust threshold, and the first dust threshold is smaller than the second dust threshold.

Specifically, when there are a set number of curve segments exceeding the first dust threshold in the first dust change curve of the current dust box, and there are no curve segments exceeding the second dust threshold, it is confirmed that the current dust box has a slight dust leakage, and a warning signal is sent to the maintenance personnel; when there is a set number of curve segments exceeding the second dust threshold in the first dust change curve of the current dust box, it is confirmed that the current dust box has a severe dust leakage, and the current dust box is isolated, that is, the current dust box is removed from the dust collector system.

Optionally, the first dust threshold is 20 mg/m ³ to 25 mg/m ³ , and the second dust threshold is 45 mg/m ³ to 50 mg/m ³ .

Specifically, since the dust concentration in the dust removal box is about 10 mg/m ³ under normal circumstances, the first dust threshold can be set to 20 mg/m ³ to 25 mg/m ³ , and the second dust threshold can be set to 45 mg/m ³ to 50 mg/m ³ .

Exemplarily, the first dust change curve is shown in FIG3. FIG3 shows the first dust change curves in dust box No. 1, dust box No. 2 and dust box No. 3. It can be seen from FIG3 that the first dust change curves of dust box No. 1 are all lower than the first dust threshold. In this case, it can be determined that there is no dust leakage in dust box No. 1. The first dust change curves of dust box No. 2 are all higher than the first dust threshold and lower than the second dust threshold. In this case, it can be confirmed that dust box No. 2 has a slight dust leakage and needs to notify maintenance personnel to handle it. Most of the curve segments in the first dust change curve of dust box No. 2 exceed the second dust threshold. In this case, it can be confirmed that dust box No. 3 has a severe dust leakage and the current dust box needs to be isolated.

S203, when there is dust leakage in the current dust removal box, the processor determines the current dust removal box as a target dust removal box, and draws a second dust change curve that can reflect the change of dust data when each row of bags in the target dust removal box is working within a second time period;

Specifically, if there is dust leakage in the current dust removal box, it indicates that there is a leaking bag in the current dust removal box. Therefore, in this case, the current dust removal box needs to be determined as the target dust removal box for leaking bag position detection.

Specifically, after the dust removal box is confirmed as the target dust removal box, it is necessary to draw a second dust change curve that can reflect the change of dust data when each row of bags in the target dust removal box is working within the second time period. Specifically, the processor can periodically collect dust data in the dust removal box through the dust detection component arranged in the connecting pipeline between the clean air chamber and the desulfurization tower, and because the multiple rows of bags in the dust removal box work in sequence, whether each row of bags works is controlled by the injection valve connected to it, so the dust data of each row of bags when working can be distinguished from the dust data in the dust removal box according to time. Therefore, the processor can draw a second dust change curve that can reflect the change of dust data when each row of bags in the target dust removal box is working within the second time period.

Specifically, since it is impossible to determine which row of bags in the dust box is leaking by only collecting dust data at a certain time point in the dust box, the second dust change curve of the dust box in the second time period is drawn in the embodiment of the disclosure, and it is necessary to ensure that the second time period is greater than the total operation time of all rows of bags in the dust box. In this way, the risk of missing the leaking bag row in the future is reduced.

Optionally, the second duration is 20 minutes to 30 minutes.

Optionally, the air inlet of each row of bags is connected to the compressed air main pipe through a spray valve; a second dust change curve is drawn which can reflect the change of dust data when each row of bags in the target dust removal box is working, including: collecting the second dust data in the target dust removal box at every fifth time interval; collecting the time data of each spray valve action in the second time period; and drawing the second dust change curve based on the second dust data and the time data.

Specifically, since the second dust change curve is drawn in order to accurately determine whether there is a leaking bag row in the target dust removal box, it is necessary to collect the second dust data in each dust removal box at short intervals to reduce the risk of discontinuity of the drawn second dust change curve and missing the leaking bag row.

Optionally, the fifth time duration is 1s to 5s.

Specifically, by collecting the time data of the action of each blowing valve within the second time period, the data corresponding to each blowing valve in the second dust data can be determined, so that the dust data corresponding to each row of bags can be determined.

Specifically, with time as the horizontal axis and dust data as the vertical axis, the second dust data is added to the coordinate system, and the curve segment corresponding to each row of bags is determined according to the time data standard of each blowing valve action, the second dust change curve can be obtained.

S204: The processor determines that there is a leaking bag row in the target dust removal box according to the second dust change curve.

Specifically, based on the second dust variation curve, it can be determined at which working stage of the bag row the dust concentration in the target dust removal box suddenly increases, thereby determining that there is a leaking bag row in the target dust removal box.

Optionally, determining whether there is a leaking bag row in the target dust removal box according to the second dust change curve includes: determining the spray valve corresponding to the curve segment in the second dust change curve that exceeds the dust threshold, and determining the spray valve as the target spray valve; determining the bag row connected to the target spray valve as the bag row with a leak.

Specifically, if the curve segment exceeds the dust threshold, it indicates that the dust concentration in the target dust removal box suddenly rises due to the action of the spray valve corresponding to the curve segment, indicating that the bag row connected to the spray valve has a leak. Therefore, the spray valve can be determined as the target spray valve, and the bag row connected to the target spray valve can be determined as the bag row with a leak.

Exemplarily, the second variation curves for the dust removal box No. 2 and the dust removal box No. 3 in FIG. 3 are shown in FIG. 4 and FIG. 5 , respectively.

According to Figure 4, it can be seen that in the No. 2 dust removal box, the row of bags connected to the No. 1 spray valve and the No. 4 spray valve will show an obvious surge in dust data during operation. Therefore, it can be determined that there are leaking bags in the 1st row of bags and the 4th row of bags in the No. 2 dust removal box.

According to Figure 5, it can be seen that in the No. 3 dust removal box, the row of bags connected to the No. 6 spray valve and the No. 8 spray valve will show an obvious surge in dust data during operation. Therefore, it can be determined that there are leaking bags in the 6th and 8th rows of bags in the No. 3 dust removal box.

In the embodiment of the present disclosure, based on the first dust change curve of each dust box in the dust collector system in the first time length, it is possible to detect whether there is a dust box with dust leakage in the dust collector system. In this way, it is possible to detect whether there is a bag leakage in the dust collector system. When it is determined that there is a dust leakage in the dust box, the row of bags with leakage in the dust box can be determined based on the second dust change curve that is drawn and can reflect the change of dust data of each row of bags in the dust box when working in the second time length. In this way, the precise positioning of the bag with leakage is achieved. It can be seen that the bag leakage detection method for the dust collector system provided in the embodiment of the present disclosure can detect whether there is a leakage in the bag in the dust collector system, and can accurately locate the bag with leakage.

In some embodiments, the bag leak detection method for the dust collector system also includes: collecting flow data of the compressed air main pipe in each dust collector box and the action signal data of each spray valve; determining the fault condition of the spray valve in the dust collector box based on the flow data and the action signal data.

Specifically, by collecting the flow data of the compressed air main pipe in each dust removal box and the action signal data of each spray valve, it is possible to determine whether the spray state of the spray valve is accurate, and thus whether the spray valve is faulty.

In the disclosed embodiment, by collecting the flow data of the compressed air main pipe in each dust removal box and the action signal data of each spray valve, it is possible to determine whether the spray valve is faulty. In this way, the risk of misjudging the existence of a leaking bag row in the dust removal box based on the first dust change curve and the second dust change curve due to a spray valve failure is reduced.

In some embodiments, the bag leak detection method for the dust collector system also includes: collecting first pressure data of the negative pressure pipe of the clean air chamber and second pressure data of the negative pressure pipe of the dust air chamber after the spray valve in each dust removal box completes the spraying action for a fourth period of time; calculating the current pressure difference between the second pressure data and the first pressure data; calculating the pressure difference between the current pressure difference and the initial pressure difference, and determining that the bag in the dust removal box is blocked when the pressure difference is greater than the product of the set coefficient and the initial pressure difference.

Specifically, the initial pressure difference is the pressure difference between the negative pressure pipe pressure of the dust chamber and the negative pressure pipe pressure of the clean air chamber when new bags are replaced, the operation is stable and no alumina is added.

Specifically, the negative pressure pipe of the clean air chamber and the negative pressure pipe of the dust air chamber are both connected to the pressure gauge, so the processor can detect the first pressure data of the negative pressure pipe of the clean air chamber and the second pressure data of the negative pressure pipe of the dust air chamber through the pressure gauge.

Specifically, by determining the pressure difference between the negative pressure pipe pressure of the dust chamber and the negative pressure pipe pressure of the clean air chamber, it can be determined whether the air permeability of the bag is good. Therefore, it is necessary to calculate the current pressure difference between the second pressure data and the first pressure data.

Specifically, by comparing the current pressure difference with the initial pressure difference, the change in the air permeability of the current bag compared to the air permeability of the new bag can be determined. Therefore, it is necessary to calculate the pressure difference between the current pressure difference and the initial pressure difference, and compare the pressure difference with the product of the set coefficient and the initial pressure difference to determine whether the bag in the dust removal box is blocked.

Optionally, the setting coefficient includes a first setting coefficient and a second setting coefficient; when the pressure difference is greater than the product of the first setting coefficient and the initial pressure difference, and less than the product of the second setting coefficient and the initial pressure difference, it is determined that the cloth bags in the dust removal box are slightly clogged; when the pressure difference is greater than or equal to the product of the second setting coefficient and the initial pressure difference, it is determined that the cloth bags in the dust removal box are slightly clogged.

Optionally, the first setting coefficient is 40% to 60%, for example, 50%; the second setting coefficient is 80% to 100%, for example, 100%.

In the disclosed embodiment, by determining the current pressure difference between the negative pressure pipe of the clean air chamber and the negative pressure pipe of the dust air chamber after the spray valve in each dust removal box completes the spraying action for the fourth time, and comparing the current pressure difference with the initial pressure difference, it is possible to detect whether the bag in the dust removal box is blocked. In this way, if it is determined that the bag in the dust removal box is blocked, the maintenance personnel can be reminded to perform maintenance in time, reducing the waste of fluoride resources caused by bag blockage.

In some embodiments, the current pressure difference between the negative pressure pipe of the clean air chamber and the negative pressure pipe of the dust air chamber can also be collected after the spray valve in each dust removal box completes the spraying action for the fourth period of time within a period of time (for example, the sixth period of time), and the downward trend of the current pressure difference can be analyzed or it can be confirmed whether there is a sudden drop in the current pressure difference, and whether there is a leakage in the bag in each dust removal box.

As shown in FIG6 , an embodiment of the present disclosure provides a bag leak detection device 600 for a dust collector system, comprising: a drawing module 601 and a confirmation module 602. The drawing module 601 is configured to draw a first dust change curve of each dust box in the dust collector system in a first time period. The confirmation module 602 is configured to confirm the dust situation in each dust box according to the first dust change curve. The drawing module 601 is also configured to, if there is dust leakage in the current dust box, determine the current dust box as the target dust box, and draw a second dust change curve that can reflect the dust data changes when each row of bags in the target dust box is working in the second time period. The confirmation module 602 is also configured to determine the bag row with leakage in the target dust box according to the second dust change curve.

In some embodiments, the air inlet of each row of bags is connected to the compressed air main pipe through a blowing valve; the drawing module 601 is specifically configured to collect the first dust data after the blowing valve in each dust removal box completes the blowing action for the fourth time period at every third time period; and draw the first dust change curve based on the first dust data.

In some embodiments, the air inlet of each row of bags is connected to the compressed air main pipe through a blow valve; the drawing module 601 is specifically configured to collect the second dust data in the target dust removal box every fifth time period; collect the time data of each blow valve action within the second time period; and draw a second dust change curve based on the second dust data and time data.

In some embodiments, the confirmation module 602 is specifically configured to confirm that there is dust leakage in the current dust removal box when there is a set number of curve segments exceeding the dust threshold in the first dust change curve of the current dust removal box; and to confirm that there is no dust leakage in the current dust removal box when the first dust change curve of the current dust removal box is lower than the dust threshold.

In some embodiments, the confirmation module 602 is specifically configured to determine the spray valve corresponding to the curve segment in the second dust change curve that exceeds the dust threshold, and determine the spray valve as the target spray valve; determine the bag row connected to the target spray valve as the bag row with leakage.

In some embodiments, the bag leak detection device 600 for a dust collector system further includes: a fault judgment module 603. The fault judgment module 603 is configured to collect flow data of the compressed air main pipe in each dust removal box and action signal data of each spray valve; and determine the fault condition of the spray valve in the dust removal box according to the flow data and the action signal data.

In some embodiments, the bag leak detection device 600 for the dust collector system further includes: a blockage judgment module 604. The blockage judgment module 604 is configured to collect the first pressure data of the negative pressure pipe of the clean air chamber and the second pressure data of the negative pressure pipe of the dust air chamber after the spray valve in each dust removal box completes the spray action for the fourth time period; calculate the current pressure difference between the second pressure data and the first pressure data; calculate the pressure difference between the current pressure difference and the initial pressure difference, and determine that the bag in the dust removal box is blocked when the pressure difference is greater than the product of the set coefficient and the initial pressure difference.

As shown in FIG7 , an embodiment of the present disclosure provides a bag leak detection device 700 for a dust collector system, and the bag leak detection device 700 for a dust collector system includes: a processor (processor) 701 and a memory (memory) 702. Optionally, the device may also include a communication interface (Communication Interface) 703 and a bus 704. Among them, the processor 701, the communication interface 703, and the memory 702 can communicate with each other through the bus 704. The communication interface 703 can be used for information transmission. The processor 701 can call the logic instructions in the memory 702 to execute the bag leak detection method for the dust collector system of the above embodiment.

In addition, the logic instructions in the memory 702 described above can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

The memory 702 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions/modules corresponding to the method in the embodiment of the present disclosure. The processor 701 executes the function application and data processing by running the program instructions/modules stored in the memory 702, that is, the bag leak detection method for the dust collector system in the above embodiment is implemented.

The memory 702 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 702 may include a high-speed random access memory and may also include a non-volatile memory.

An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the bag leak detection method for a dust collector system.

The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and/or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variants "comprises" and/or comprising refer to the presence of stated features, wholes, steps, operations, elements, and/or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and/or groups thereof. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method or device including the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims (10)

1. A bag leak detection method for a dust collector system, the dust collector system includes a plurality of dust removal boxes, each dust removal box includes a clean air chamber and a dust air chamber, and a plurality of rows of bags are arranged in the clean air chamber, characterized in that the bag leak detection method includes: Draw a first dust change curve of each dust removal box in the dust collector system at a first time length; Confirm the dust situation in each dust removal box according to the first dust change curve; In the case where there is dust leakage in the current dust removal box, the current dust removal box is determined as a target dust removal box, and a second dust change curve is drawn that can reflect the change of dust data when each row of bags in the target dust removal box is working within a second time period; The presence of a leaking bag row in the target dust removal box is determined based on the second dust variation curve. 2. The bag leak detection method according to claim 1 is characterized in that the air inlet of each row of bags is connected to the compressed air main pipe through a spray valve; drawing a first dust change curve of each dust box in the dust collector system at a first time length, comprising: At every third time interval, the first dust data after the spray valve in each dust removal box completes the spraying action for the fourth time is collected; A first dust variation curve is drawn according to the first dust data. 3. The bag leak detection method according to claim 1 is characterized in that the air inlet of each row of bags is connected to the compressed air main pipe through a spray valve; and a second dust change curve that can reflect the dust data change of each row of bags in the target dust removal box when working is drawn, comprising: Collect the second dust data in the target dust removal box at every fifth time interval; Collecting time data of each spray valve action within the second time period; A second dust variation curve is drawn according to the second dust data and the time data. 4. The bag leak detection method according to any one of claims 1 to 3, characterized in that confirming the dust situation in each dust removal box according to the first dust change curve comprises: When there are curve segments whose set number exceeds the dust threshold in the first dust change curve of the current dust removal box, it is confirmed that there is dust leakage in the current dust removal box; When the first dust change curve of the current dust removal box is lower than the dust threshold, it is confirmed that there is no dust leakage in the current dust removal box. 5. The bag leak detection method according to any one of claims 1 to 3, characterized in that determining a bag row with a leak in a target dust removal box according to the second dust change curve comprises: Determine a spray valve corresponding to a curve segment exceeding a dust threshold value in the second dust variation curve, and determine the spray valve as a target spray valve; The bag row connected to the target spray valve is determined as the bag row with leakage. 6. The bag leak detection method according to any one of claims 1 to 3, characterized in that it also includes: Collect the flow data of the compressed air main pipe in each dust removal box and the action signal data of each injection valve; Determine the fault condition of the spray valve in the dust removal box based on the flow data and the action signal data. 7. The bag leak detection method according to any one of claims 1 to 3, characterized in that it also includes: Collecting the first pressure data of the negative pressure pipe of the clean air chamber and the second pressure data of the negative pressure pipe of the dust air chamber after the spray valve in each dust removal box completes the spraying action for a fourth time period; Calculating a current pressure difference between the second pressure data and the first pressure data; The pressure difference between the current pressure difference and the initial pressure difference is calculated, and when the pressure difference is greater than the product of the set coefficient and the initial pressure difference, it is determined that the bag in the dust removal box is clogged. 8. A bag leak detection device for a dust collector system, characterized in that the dust collector system includes a plurality of dust removal boxes, each of which includes a clean air chamber and a dust air chamber, and a plurality of rows of bags are arranged in the clean air chamber, characterized in that the bag leak detection device includes: A drawing module, configured to draw a first dust variation curve of each dust removal box in the dust collector system at a first time length; A confirmation module is configured to confirm the dust condition in each dust removal box according to the first dust change curve; The drawing module is further configured to, when there is dust leakage in the current dust removal box, determine the current dust removal box as a target dust removal box, and draw a second dust change curve that can reflect the change of dust data when each row of bags in the target dust removal box is working within a second time period; The confirmation module is further configured to determine whether there is a leaking bag row in the target dust removal box according to the second dust variation curve. 9. A bag leak detection device for a dust collector system, comprising a processor and a memory storing program instructions, wherein the processor is configured to be able to execute the bag leak detection method for a dust collector system as described in any one of claims 1 to 7. 10. A dust collector system, comprising: Multiple dust removal boxes, each of which includes a clean air chamber and a dust air chamber, and multiple rows of bags are arranged in the clean air chamber; the air inlet of each row of bags is connected to the compressed air main pipe through a spray valve; The bag leak detection device for a dust collector system as described in claim 8 or 9 is installed on the box body of any dust removal box.