Pulse bag dust collector fault inspection system and method

Abstract

The present invention provides a pulse bag dust collector fault inspection system and method, the system includes: a dust collector, the dust collector has an upper box, a middle box and an ash hopper, a plurality of relatively independent chambers are arranged in the middle box, relative air inlets and air outlets are arranged on both sides of the middle box, each chamber is provided with a relative first end and a second end, each chamber is provided with a bag, a lifting valve is arranged near the first end, an air inlet valve is arranged near the second end, a pulse valve is arranged on the upper box, an ash discharge valve is arranged at the outlet of the ash hopper, a first detection component for obtaining the pressure difference of the chamber is arranged between the first end and the second end; an exhaust device connected to the air outlet, a concentration detection component is arranged at the outlet of the exhaust device; a controller is electrically connected to at least the first detection component and the concentration detection component. The present invention can lock the fault point in the shortest time, buy time for maintenance; at the same time, it can realize intelligent inspection, reduce labor costs, and improve management efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of pulse bag dust collectors, and in particular to a pulse bag dust collector fault inspection system and method. Background Art

[0002] Pulse bag dust collectors are widely used in the steel and petrochemical industries. They use the filtering effect of fiber fabrics to filter dust-containing gases. When dust-containing gases enter the dust collector, the dust will adhere to the outer surface of the filter bag and accumulate to a certain extent. Through the pulse jet and back-blowing effect, the bag expands and shakes the dust off into the ash hopper, and then the dust is transported out through conveying facilities to complete the gas purification.

[0003] There are many dust-generating points in the production processes of raw materials, sintering, ironmaking, steelmaking, etc. in steel enterprises, all of which require the use of pulse bag dry dust removal and purification facilities. A steel enterprise will basically have dozens of pulse bag dust collectors, which require a lot of manpower and material resources for maintenance. In addition to the increase in labor costs, the development of intelligentization in the steel industry has prompted the dust collector to operate more efficiently and stably.

[0004] The intelligent fault inspection of dust collectors uses perfect detection methods to analyze relevant data, make timely predictions, provide key inspection objects for production inspections, save maintenance manpower, save maintenance time costs, and provide strong guarantees for the system to resume normal operation as quickly as possible.

[0005] Conventional pulse bag dust collectors mainly include: upper box, middle box, ash hopper, dust cleaning system, ash conveying system, etc. Among them, dust cleaning generally adopts timing or fixed resistance dust cleaning. Among them, fixed resistance dust cleaning relies on the dust collector inlet and outlet differential pressure detection configured by the dust removal system. When the differential pressure exceeds the set value, pulse spray cleaning is performed.

[0006] During the use of pulse bag dust collector, various faults may occur, resulting in an increase in the smoke emission concentration at the exhaust pipe outlet. For example, the bag itself may be blocked by dirt, resulting in a decrease in its own filtration efficiency, or the bag may be damaged or fall off, causing the differential pressure between the inlet and outlet of the dust collector to change, which in turn leads to an increase in the smoke emission concentration at the exhaust pipe outlet. At this time, manpower is required to check the status of the bags in each bin and room. In the case of manual inspection, it is impossible to accurately determine in which bin the bag is damaged or falls off in a timely manner. Inspection is required in each bin and room, which requires a lot of time and labor costs. Summary of the invention

[0007] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiment of the present invention is to provide a pulse bag dust collector fault inspection system and method, which can lock the fault point in the shortest time and buy time for maintenance; at the same time, it can realize intelligent inspection, reduce labor costs and improve management efficiency.

[0008] The above-mentioned object of the present invention can be achieved by adopting the following technical scheme. The present invention provides a pulse bag filter fault inspection system, comprising:

[0009] A dust collector, the dust collector comprising a hollow upper box body, a middle box body and an ash hopper, a plurality of relatively independent chambers are arranged in the middle box body, relative air inlets and air outlets are arranged on both sides of the middle box body, each of the chambers is provided with a first end and a second end relative to each other, a cloth bag is arranged in each of the chambers, a lifting valve is arranged near the first end, an air inlet valve is arranged near the second end, a pulse valve is arranged on the upper box body, an ash discharge valve is arranged at the outlet of the ash hopper, a first detection component for obtaining the pressure difference of the chamber is arranged between the first end and the second end; an exhaust device connected to the air outlet, a concentration detection component is arranged at the outlet of the exhaust device; a controller, electrically connected to at least the first detection component and the concentration detection component.

[0010] In a preferred embodiment, the pulse bag filter fault inspection system further includes: a second detection component for obtaining the pressure difference between the air inlet and the air outlet, and the second detection component is electrically connected to the controller.

[0011] In a preferred embodiment, the lift valve is provided with a position detection component, the lift valve has a first position for opening the first end of the sub-chamber and a second position for closing the first end of the sub-chamber, and the position detection component is used to detect whether the lift valve reaches the first position and / or the second position.

[0012] In a preferred embodiment, the ash discharge valve is provided with a first motor, and the pulse bag dust collector fault inspection system also includes: a first current detection device for obtaining the current of the first motor and a first speed detection device for the speed of the first motor, and the first current detection device and the first speed detection device are electrically connected to the controller.

[0013] In a preferred embodiment, the pulse bag dust collector fault inspection system also includes: a scraper arranged downstream of the ash discharge valve, the scraper is provided with a second motor, and the pulse bag dust collector fault inspection system also includes: a second current detection device for obtaining the current of the second motor and a second speed detection device for the speed of the second motor, the second current detection device and the second speed detection device are electrically connected to the controller.

[0014] In a preferred embodiment, the pulse bag dust collector fault inspection system also includes: a bucket elevator arranged downstream of the scraper conveyor, the bucket elevator is provided with a third motor, and the pulse bag dust collector fault inspection system also includes: a third current detection device for obtaining the current of the third motor and a third speed detection device for the speed of the third motor, the third current detection device and the third speed detection device are electrically connected to the controller.

[0015] In a preferred embodiment, the pulse bag dust collector fault inspection system also includes: a cleaning component connected to the pulse valve, the cleaning component includes: a blowing pipe, an air bag, and a pulse controller for controlling the working state of the pulse valve, and the pulse controller is electrically connected to the controller.

[0016] In a preferred embodiment, the pulse bag filter fault inspection system further includes: a third detection component for obtaining the air bag pressure, and the third detection component is electrically connected to the controller.

[0017] In a preferred embodiment, a dust removal fan is provided between the exhaust device and the air outlet.

[0018] In a preferred embodiment, a muffler is provided between the exhaust device and the dust removal fan.

[0019] A pulse bag dust collector fault inspection method of a pulse bag dust collector fault inspection system, the pulse bag dust collector fault inspection system comprising: a dust collector, the dust collector having a hollow upper box body, a middle box body and an ash hopper, a plurality of relatively independent sub-chambers are arranged in the middle box body, opposite air inlets and air outlets are arranged on both sides of the middle box body, each of the sub-chambers is provided with a first end and a second end opposite to each other, a bag is arranged in each of the sub-chambers, a lifting valve is arranged near the first end, the lifting valve is provided with a position detection component, an air inlet valve is arranged near the second end, a pulse valve is arranged on the upper box body, and an ash discharge valve is arranged at the outlet of the ash hopper, A first detection component for obtaining the chamber pressure difference is provided between the first end and the second end; an exhaust device connected to the air outlet, and a concentration detection component is provided at the outlet of the exhaust device; a dust cleaning component connected to the pulse valve, and the dust cleaning component includes: a blowing pipe, an air bag, a pulse controller for controlling the working state of the pulse valve, and a third detection component for obtaining the air bag pressure; a controller, which is electrically connected to at least the first detection component, the concentration detection component, the position detection component of the lifting valve, the pulse controller, and the third detection component; the pulse bag dust collector fault inspection method includes:

[0020] When the concentration signal detected by the concentration detection component at the outlet of the exhaust device exceeds the preset concentration range, at least two rounds of pulse blowing are performed on each chamber, and the detected signals of the first detection component, the position detection component, and the third detection component are used to identify the current faulty chamber position and the faulty object, and the faulty object includes any one of the following or a combination thereof: a cloth bag, a lifting valve, and a pulse valve in the chamber.

[0021] In a preferred embodiment, when the concentration signal detected by the concentration detection element at the outlet of the exhaust device exceeds a preset concentration range, the method includes: closing the lift valve of the current chamber; if the pressure difference value of the current chamber is greater than the first pressure difference and the closing limit signal of the lift valve of the current chamber is not received, it indicates that the lift valve of the current chamber is faulty.

[0022] In a preferred embodiment, after closing the lift valve of the current chamber, if the pressure difference value of the current chamber is less than the second pressure difference and the closing limit signal of the lift valve of the current chamber is received, it indicates that the lift valve of the current chamber is in a normal state, and the second pressure difference is less than the first pressure difference, and the pulse valve is started for blowing. If the air bag pressure decreases and cannot be restored to the preset pressure range, it indicates that the pulse valve of the current chamber is faulty.

[0023] In a preferred embodiment, after starting the pulse valve for blowing, if the air bag pressure is within the preset pressure range, it indicates that the pulse valve of the current chamber is in a normal state; open the lifting valve, if the concentration signal detected by the concentration detection component at the outlet of the exhaust device exceeds the preset concentration range, and the current chamber differential pressure value increases, if the same situation occurs in both rounds of detection, it is identified that the current chamber bag has a fault.

[0024] In a preferred embodiment, the ash unloading valve is provided with a first motor, and the pulse bag dust collector fault inspection system also includes: a first current detection device for obtaining the current of the first motor and a first speed detection device for the speed of the first motor; a scraper conveyor is arranged downstream of the ash unloading valve, and the scraper conveyor is provided with a second motor, a second current detection device for obtaining the current of the second motor and a second speed detection device for the speed of the second motor, the first current detection device, the first speed detection device, the second current detection device, and the second speed detection device are electrically connected to the controller, and after completing the blowing process, the pulse bag dust collector fault inspection method also includes starting the ash unloading process.

[0025] In a preferred embodiment, during the process of starting the dust unloading process, the scraper is started first. If the current signal and the speed signal of the second motor are not received, it indicates that the scraper is faulty.

[0026] In a preferred embodiment, after starting the scraper conveyor, if the current signal and speed signal of the second motor are received, it indicates that the scraper conveyor is currently in normal working condition, and the ash discharge valve is started sequentially; if the current signal and speed signal of the first motor are not received, it indicates that the ash discharge valve is faulty.

[0027] In a preferred embodiment, the pulse bag dust collector fault inspection system also includes: a bucket elevator arranged downstream of the scraper conveyor, the bucket elevator is provided with a third motor, and the pulse bag dust collector fault inspection system also includes: a third current detection component for obtaining the current of the third motor and a third speed detection component for the speed of the third motor, the third current detection component and the third speed detection component are electrically connected to the controller, and when starting the scraper conveyor, it also includes starting the bucket elevator. If the current signal and speed signal of the third motor are not received, it indicates that the bucket elevator has a fault.

[0028] The technical solution of the present invention has the following significant beneficial effects:

[0029] In general, the pulse bag dust collector fault inspection system and method provided in the present application, in which a detection device for acquiring signals is arranged at a specific position, is based on the pulse bag dust collector fault inspection system. After executing the pulse bag dust collector fault inspection method, the fault point can be locked in the shortest time, thereby buying time for maintenance; at the same time, intelligent inspection can be realized, labor costs can be reduced, and management efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0032] Figure 1 A front view of a pulse bag filter fault inspection system provided in an embodiment of the present invention;

[0033] Figure 2A side view of a pulse bag filter fault inspection system provided in an embodiment of the present invention;

[0034] Figure 3 It is a partial schematic diagram of a pulse bag dust collector fault inspection system provided in an embodiment of the present invention;

[0035] Figure 4 A pulse bag dust collector fault inspection flow chart provided in an embodiment of the present invention;

[0036] Figure 5 A schematic diagram of signal transmission in a pulse bag filter fault inspection system provided in an embodiment of the present invention.

[0037] Description of the symbols in the above drawings:

[0038] 100. Dust collector;

[0039] 110. Middle box;

[0040] 101. Air inlet;

[0041] 102. Air outlet;

[0042] 120. Branch room;

[0043] 130. Poppet valve;

[0044] 131. Position detection parts;

[0045] 140. Ash hopper;

[0046] 150. Pulse valve;

[0047] 160, ash discharge valve;

[0048] 201, first detection component;

[0049] 202. A second detection component;

[0050] 300, exhaust device;

[0051] 301. Concentration detection parts;

[0052] 400, scraper;

[0053] 500, bucket elevator;

[0054] 600, dust cleaning components;

[0055] 700, dust removal fan;

[0056] 800. Silencer. DETAILED DESCRIPTION

[0057] The details of the present invention can be more clearly understood by combining the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on another element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the communication between the two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0059] From an environmental protection perspective, the dust emission concentration at the dust collector outlet is the most critical test data to avoid long-term excessive dust emission concentration.

[0060] The pulse bag dust collector fault inspection system and method provided by the present application aims to control the dust emission concentration at the dust collector outlet. Under normal emission conditions, the pulse spraying of the dust collector adopts the conventional dust collector inlet and outlet differential pressure and timed dust cleaning detection, and the dust discharge valve and scraper dust discharge can adopt the timing method. Conventional spraying and dust discharge are carried out according to the pre-set time.

[0061] In case of abnormal increase in dust concentration at the outlet, stop the scheduled offline blowing and start two rounds of offline blowing in the chamber immediately. Use the detection data such as chamber differential pressure, limit signal, pressure signal, outlet concentration fluctuation, etc. to gradually troubleshoot the lift valve, pulse valve, and bag until the faulty chamber and corresponding equipment are locked.

[0062] Please refer to Figure 1 , Figure 2 and Figure 3In order to lock the fault point in the shortest time and buy time for maintenance; at the same time, realize intelligent inspection, reduce labor costs, and improve management efficiency, a pulse bag dust collector fault inspection system is provided in an embodiment of the present invention, and the pulse bag dust collector fault inspection system may include: a dust collector 100, the dust collector 100 has a hollow upper box body, a middle box body 110 and an ash hopper 140, a plurality of relatively independent sub-chambers 120 are arranged in the middle box body 110, and opposite air inlets 101 and air outlets 102 are arranged on both sides of the middle box body 110, and each of the sub-chambers 120 is provided with opposite first and second ends. A cloth bag is arranged in each of the sub-chambers 120, a lifting valve 130 is arranged near the first end, an air inlet valve is arranged near the second end, a pulse valve 150 is arranged on the upper box body, an ash discharge valve 160 is arranged at the outlet of the ash hopper 140, and a first detection component 201 for obtaining the pressure difference of the sub-chamber 120 is arranged between the first end and the second end; an exhaust device 300 connected to the air outlet 102, and a concentration detection component 301 is arranged at the outlet of the exhaust device 300; a controller is electrically connected to the first detection component 201 and the concentration detection component 301.

[0063] In this embodiment, the pulse bag filter fault inspection system mainly includes: a filter 100, a controller, and necessary detection equipment, such as a pressure (difference) component, a concentration detection element 301, and the like.

[0064] The dust collector 100 has a hollow upper box, a middle box 110 and an ash hopper 140, wherein the middle box 110 is provided with a plurality of relatively independent chambers 120. The middle box 110 is provided with an air inlet 101 and an air outlet 102 relative to each other. Figure 2 As shown, each of the chambers 120 is provided with an opposite first end ( Figure 2 The upper end opposite to the upper end) and the second end ( Figure 2 The lower end opposite to the middle). Each of the sub-chambers 120 is provided with a bag, and the number of the bags can be multiple. The specific number of the bags can vary according to the application scenario of the dust collector 100, the dust removal requirements, etc., and the present application does not make specific limitations here. A lift valve 130 is provided near the first end of each sub-chamber 120, and the lift valve 130 is used to control the opening and closing of the first end of the sub-chamber 120. An air inlet valve is provided near the second end of each sub-chamber 120. A pulse valve 150 is provided on the upper box body. The ash hopper 140 is used to collect the separated solid dust. An ash discharge valve 160 is provided at the outlet of the ash hopper 140. When the ash discharge valve 160 is opened, the solid dust in the ash hopper 140 can be discharged to the outside.

[0065] The pulse valve 150 is used to clean the bag. According to the size of the dust collector 100, the number of the pulse valve 150 can be multiple groups, and the multiple groups of pulse valves 150 can be directly controlled by a controller (such as PLC control) or controlled by a pulse controller. Each time a group of pulse valves 150 is opened to remove the dust from the part of the bag or filter cartridge it controls, while the other bags or filter cartridges work normally. After a period of time, the next group of pulse valves 150 is opened to clean the next part.

[0066] The working process of the dust collector 100 is as follows: when the dust-containing gas enters the dust collector 100 from the air inlet 101, it first hits the blocking member in the middle of the air inlet and outlet 102, such as the inclined plate and the baffle, and the airflow turns to flow into the ash hopper 140, and at the same time the airflow speed slows down. Due to the inertia, the coarse dust particles in the gas flow directly into the ash hopper 140, which plays the role of pre-dust collection; the airflow entering the ash hopper 140 then turns upward and passes through the filter bag with a metal skeleton inside. The dust is captured on the outer surface of the filter bag (i.e., the cloth bag), and the purified gas enters the upper cleaning room of the filter bag chamber and is collected at the air outlet 102 for discharge. In the process of dust-containing gas being purified by the filter bag, more and more dust is accumulated on the filter bag as time goes by, increasing the resistance of the filter bag, causing the processed air volume to gradually decrease. In order to ensure the normal operation of the dust collector 100, the resistance should be controlled within a preset range (for example, less than 1500 Pa). Once the preset range is exceeded, the filter bag needs to be cleaned. During cleaning, the pulse controller sequentially triggers each control valve to open the pulse valve 150, and the compressed air in the air bag is sprayed from each hole of the spray pipe through the venturi tube into each corresponding filter bag. The filter bag expands sharply instantly, causing the dust accumulated on the surface of the filter bag to fall off, and the filter bag returns to its initial state. The cleaned dust falls into the ash hopper 140 and is discharged from the machine body through the ash discharge system. In this way, the dust accumulated on the filter bag is periodically pulse-sprayed and cleaned, so that the purified gas passes normally and the dust removal system is guaranteed to operate.

[0067] An exhaust device 300 is provided at the end of the system. Specifically, the exhaust device 300 may be in the form of a chimney. A concentration detection member 301 is provided at the outlet of the exhaust device 300, and the concentration detection member 301 is used to detect the dust concentration discharged from the chimney outlet.

[0068] In general, the pulse bag filter fault inspection system aims to control the dust emission concentration at the outlet. Under normal emission conditions, for example, when the dust concentration detected by the concentration detection element 301 is within the preset concentration range, the dust collector 100 works in the above-mentioned working process. The preset concentration range can be determined comprehensively according to the production needs of the site and the requirements of environmental protection, and its specific value is not limited to the specific value in this application.

[0069] When the dust concentration detected by the concentration detection element 301 exceeds the preset concentration range, it indicates that a component in the pulse bag filter fault inspection system may have failed. Among them, the most likely and most direct impact on the dust concentration is that the bag in the compartment 120 has failed. Once the bag fails, the filtering effect of solid particles in the flue gas will be greatly reduced, which will cause the dust concentration at the outlet of the exhaust device 300 to exceed the standard.

[0070] At present, in the prior art, each sub-chamber 120 can only be checked manually one by one to confirm whether the bag in the sub-chamber 120 is faulty.

[0071] In the present application, a first detection component 201 for obtaining the pressure difference of the chamber 120 is arranged between the first end and the second end near each chamber 120. The controller can directly determine which bag or bags in which chambers 120 have failed through the pressure difference information of the chamber 120 detected by the first detection component 201.

[0072] Among them, the specific form of the first detection component 201 can be a pressure sensor respectively arranged at the first end and the second end of the chamber 120, or it can be directly in the form of a differential pressure transmitter, and the collection points of the differential pressure transmitter are distributed at the first end and the second end of the chamber 120. Of course, the specific form of the first detection component 201 is not limited to the above example, and the present application does not make any specific limitation here.

[0073] In an embodiment of the present application, when the dust concentration detected by the concentration detection element 301 exceeds a preset concentration range, the controller can immediately start a round of pulse blowing in the chamber 120, and identify which specific chamber or chambers 120 have failed in combination with the detection data of the first detection component 201. After completing the first round of detection, a second round of detection can be performed to verify the results of the first round of detection, thereby ensuring the accuracy of the detection results.

[0074] In one embodiment, the pulse bag filter fault inspection system further includes: a second detection component 202 for obtaining the pressure difference between the air inlet 101 and the air outlet 102, and the second detection component 202 is electrically connected to the controller.

[0075] Among them, the specific form of the second detection component 202 can be a pressure sensor respectively arranged at the air inlet 101 and the air outlet 102, or it can be directly in the form of a differential pressure transmitter, and the collection points of the differential pressure transmitter are distributed at the air inlet 101 and the air outlet 102. Of course, the specific form of the second detection component 202 is not limited to the above example, and the present application does not make any specific limitation here.

[0076] When a bag in a sub-chamber 120 or several sub-chambers 120 in the dust collector 100 fails, the pressure difference detected by the second detection component 202 will also change synchronously. Therefore, the pressure difference detected by the second detection component 202 can also verify the accuracy of the detection result of the first detection component 201.

[0077] In addition, the inventors found that the factors that cause the concentration at the outlet of the exhaust device 300 to fluctuate and exceed the preset concentration range include not only the cloth bags in the chamber 120, but also other factors. For example, when the lifting valve 130 fails, it may also cause the concentration at the outlet of the exhaust device 300 to fluctuate.

[0078] In one embodiment, the lift valve 130 is provided with a position detection component 131, and the lift valve 130 has a first position for opening the first end of the sub-chamber 120 and a second position for closing the first end of the sub-chamber 120. The position detection component 131 is used to detect whether the lift valve 130 reaches the first position and / or the second position.

[0079] When the lift valve 130 is provided with a position detection component 131, the position detection component 131 is electrically connected to the controller. For example, when the controller sends a control instruction to the lift valve 130 to make it reach the second position, the position detection component 131 can be used to determine whether the lift valve 130 has reached the designated second position. If it has not reached the second position, it can be determined that the lift valve 130 has a fault.

[0080] The inventors found that the factors that cause the concentration at the outlet of the exhaust device 300 to fluctuate and exceed the preset concentration range include not only the bags in the chamber 120 but also other factors. For example, when the ash discharge valve 160 fails, it may also cause the concentration at the outlet of the exhaust device 300 to fluctuate.

[0081] In one embodiment, the ash discharge valve 160 is provided with a first motor, and the pulse bag dust collector fault inspection system also includes: a first current detection element for obtaining the current of the first motor and a first speed detection element for the speed of the first motor, and the first current detection element and the first speed detection element are electrically connected to the controller.

[0082] Generally, the ash discharge valve 160 is provided with a first motor for providing power. When the first motor fails, it may also cause concentration fluctuations at the outlet of the exhaust device 300. In order to determine whether the first motor fails, a first current detection element for obtaining the current of the first motor and a first speed detection element for the speed of the first motor may be provided. The first current detection element and the first speed detection element are electrically connected to the controller. The controller can determine whether the first motor of the current ash discharge valve 160 fails according to the current signal obtained by the first current detection element and the speed signal obtained by the first speed detection element.

[0083] The inventors have discovered that factors that cause concentration fluctuations at the outlet of the exhaust device 300 and exceed a preset concentration range include, in addition to the bags in the chamber 120, other factors. For example, when the scraper conveyor 400 fails, it may also cause concentration fluctuations at the outlet of the exhaust device 300.

[0084] In one embodiment, the pulse bag dust collector fault inspection system also includes: a scraper 400 arranged downstream of the ash discharge valve 160, the scraper 400 is provided with a second motor, and the pulse bag dust collector fault inspection system also includes: a second current detection device for obtaining the current of the second motor and a second speed detection device for the speed of the second motor, the second current detection device and the second speed detection device are electrically connected to the controller.

[0085] Generally, the scraper 400 is provided with a second motor for providing power. When the second motor fails, it may also cause concentration fluctuations at the outlet of the exhaust device 300. In order to determine whether the second motor fails, a second current detection element for obtaining the current of the second motor and a second speed detection element for the speed of the second motor may be provided. The second current detection element and the second speed detection element are electrically connected to the controller. The controller can determine whether the second motor of the current scraper 400 fails based on the current signal obtained by the second current detection element and the speed signal obtained by the second speed detection element.

[0086] In one implementation scenario, the pulse bag filter fault inspection system may further include: a bucket elevator 500 disposed downstream of the scraper 400. The bucket elevator 500 is used to provide power for transporting dust.

[0087] The inventors have found that the factors that cause the concentration at the outlet of the exhaust device 300 to fluctuate and exceed the preset concentration range include not only the cloth bags in the chamber 120, but also other factors. For example, when the bucket elevator 500 fails, it may also cause the concentration at the outlet of the exhaust device 300 to fluctuate.

[0088] Specifically, the bucket elevator 500 is provided with a third motor, and the pulse bag dust collector fault inspection system also includes: a third current detection component for obtaining the current of the third motor and a third speed detection component for the speed of the third motor, and the third current detection component and the third speed detection component are electrically connected to the controller.

[0089] Generally, the bucket elevator 500 is provided with a third motor for providing power. When the third motor fails, it may also cause concentration fluctuations at the outlet of the exhaust device 300. In order to determine whether the third motor fails, a third current detection element for obtaining the current of the third motor and a third speed detection element for the speed of the third motor may be provided. The third current detection element and the third speed detection element are electrically connected to the controller. The controller can determine whether the third motor of the current bucket elevator 500 fails according to the current signal obtained by the third current detection element and the speed signal obtained by the third speed detection element.

[0090] In one embodiment, the pulse bag filter fault inspection system may further include: a dust cleaning component 600 connected to the pulse valve 150. The dust cleaning component 600 is used to provide a disturbing force to the dust accumulated in the ash hopper 140.

[0091] Specifically, the cleaning component 600 includes: a blowing pipe, an air bag, and a pulse controller for controlling the working state of the pulse valve 150. The pulse valve 150 and the pulse controller are electrically connected to the controller.

[0092] The inventors have discovered that factors that cause concentration fluctuations at the outlet of the exhaust device 300 and exceed a preset concentration range include, in addition to the cloth bags in the chamber 120, other factors. For example, when the pulse valve 150 fails, it may also cause concentration fluctuations at the outlet of the exhaust device 300.

[0093] The pulse bag dust collector fault inspection system may further include: a third detection component for obtaining the air bag pressure, and the third detection component is electrically connected to the controller.

[0094] In order to determine whether the pulse valve 150 is faulty, a third detection component for obtaining the air bag pressure can be provided. The third detection component is electrically connected to the controller. The controller can obtain the current air bag pressure signal based on the third detection component, thereby determining whether the pulse valve 150 is faulty.

[0095] In a specific scenario, since there are many factors that cause concentration fluctuations at the outlet of the exhaust device 300, the controller can make a comprehensive judgment based on multiple factors, so as to accurately identify the specific fault factor and the position of the sub-chamber 120 where the fault is located.

[0096] If the air bag pressure test shows normal and regular fluctuations, and the situation is the same after two rounds of injection, it is considered that there is no problem with the pulse valve 150. If the air bag pressure is lower than the normal value and remains stable and cannot be restored to the normal value, it can be judged that there is a pulse valve 150 fault in this air bag, and the manual positioning inspection of the air bag pulse valve 150 is started, and timely maintenance or replacement is carried out.

[0097] If the air bag pressure is detected to fluctuate normally and the injection task is completed, the lifting valve 130 is opened. At this time, if the dust concentration of the flue gas at the end of the system increases instantaneously and the differential pressure value of the chamber 120 increases, and the same situation occurs in two rounds of detection, start manual positioning to check the bags, focusing on the dust accumulation in the bags.

[0098] If the dust concentration increases instantaneously and the differential pressure value of the chamber 120 is basically normal, manual positioning is required to focus on checking the bag falling off, open wires, etc. If the outlet concentration remains unchanged and the differential pressure of the chamber 120 is normal, the offline blowing task is completed.

[0099] It should be noted that: At present, dust removal systems generally implement ultra-low emission standards, with emissions ≤10mg / Nm 3 The emission concentration of the dust removal system is basically stable when it is running stably. Different stable emission concentrations correspond to different abnormal increase indicators. For example, if it is stable at 1mg / Nm 3 If the concentration of N / A is below 3 mg / Nm, and it suddenly increases by more than 3 times, it indicates an abnormal increase. If it is stable at 3-4 mg / Nm for a long time, it indicates an abnormal increase. 3 , doubling indicates abnormal increase; if it is stable at 6-8 mg / Nm 3 , basically more than 10mg / Nm 3 If it is stable at 8 or 9 mg / Nm 3 Slight fluctuations are normal, but any slight fluctuation will exceed the standard. At this time, the fundamental problem must be solved from the system level, and emissions cannot be allowed to remain stable at the upper limit for a long time.

[0100] like Figure 1 As shown, in one embodiment, a dust removal fan 700 is provided between the exhaust device 300 and the air outlet 102. In addition, a muffler 800 is provided between the exhaust device 300 and the dust removal fan 700.

[0101] The dust removal fan 700 is mainly used to further remove dust from the smoke flowing out of the air outlet 102, thereby reducing the dust concentration at the outlet of the exhaust device 300. The muffler 800 is used to reduce the noise of the smoke flowing out of the dust removal fan 700.

[0102] Please refer to Figure 4 and Figure 5Based on a pulse bag dust collector fault inspection system provided in the above-mentioned embodiment, a pulse bag dust collector fault inspection method is also provided in the embodiment of the present application. Among them, the pulse bag dust collector fault inspection system includes: a dust collector 100, the dust collector 100 has a hollow upper box body, a middle box body 110 and an ash hopper, a plurality of relatively independent chambers 120 are arranged in the middle box body 110, and relative air inlets 101 and air outlets 102 are arranged on both sides of the middle box body 110, each of the chambers 120 is provided with a relative first end and a second end, a bag is arranged in each chamber 120, a lift valve 130 is arranged near the first end, the lift valve 130 is provided with a position detection component 131, an air inlet valve is arranged near the second end, a pulse valve 150 is arranged on the upper box body, and an ash discharge valve 160 is arranged at the outlet of the ash hopper 140, near the A first detection component 201 for obtaining the pressure difference of the chamber 120 is arranged near the first end and the second end; an exhaust device 300 connected to the air outlet 102, and a concentration detection component 301 is arranged at the outlet of the exhaust device 300; a cleaning component 600 connected to the pulse valve 150, and the cleaning component 600 includes: a blowing pipe, an air bag, a pulse controller for controlling the working state of the pulse valve 150, and a third detection component for obtaining the air bag pressure; a controller, which is electrically connected to at least the first detection component 201, the concentration detection component 301, the position detection component 131 of the lifting valve 130, the pulse controller, and the third detection component.

[0103] The pulse bag dust collector fault inspection method includes: when the concentration signal detected by the concentration detection element 301 at the outlet of the exhaust device 300 exceeds the preset concentration range, at least two rounds of pulse blowing are performed on each chamber 120, and the position of the current faulty chamber 120 and the faulty object are identified by using the detected signals of the first detection component 201, the position detection component 131, and the third detection component. The faulty object includes any one of the following or a combination thereof: the bag in the chamber 120, the lifting valve 130 and the pulse valve 150.

[0104] When the concentration signal detected by the concentration detection element 301 at the outlet of the exhaust device 300 exceeds a preset concentration range, the method includes: closing the lift valve 130 of the current chamber 120; if the pressure difference value of the current chamber 120 is greater than the first pressure difference and the closing limit signal of the lift valve 130 of the current chamber 120 is not received, it indicates that the lift valve 130 of the current chamber 120 is faulty.

[0105] After closing the lift valve 130 of the current chamber 120, if the pressure difference value of the current chamber 120 is less than the second pressure difference and a closing limit signal of the lift valve 130 of the current chamber 120 is received, it indicates that the lift valve 130 of the current chamber 120 is in a normal state, and the second pressure difference is less than the first pressure difference. The pulse valve 150 is started for blowing. If the air bag pressure decreases and cannot be restored to the preset pressure range, it indicates that the pulse valve 150 of the current chamber 120 is faulty.

[0106] After starting the pulse valve 150 for blowing, if the air bag pressure is within the preset pressure range, it indicates that the pulse valve 150 of the current chamber 120 is in a normal state; open the lifting valve 130, if the concentration signal detected by the concentration detection component 301 at the outlet of the exhaust device 300 exceeds the preset concentration range, and the differential pressure value of the current chamber 120 increases, and the same situation occurs in both rounds of detection, it is identified that the bag in the current chamber 120 is faulty.

[0107] In one embodiment, the ash unloading valve 160 is provided with a first motor, and the pulse bag dust collector fault inspection system also includes: a first current detection device for obtaining the current of the first motor and a first speed detection device for the speed of the first motor; a scraper 400 is arranged downstream of the ash unloading valve 160, and the scraper 400 is provided with a second motor, a second current detection device for obtaining the current of the second motor and a second speed detection device for the speed of the second motor, the first current detection device, the first speed detection device, the second current detection device, and the second speed detection device are electrically connected to the controller, and after completing the blowing process, the pulse bag dust collector fault inspection method also includes starting the ash unloading process.

[0108] During the process of starting the dust removal process, the scraper 400 is started first. If the current signal and the speed signal of the second motor are not received, it indicates that the scraper 400 is faulty.

[0109] After starting the scraper 400, if the current signal and the speed signal of the second motor are received, it means that the scraper 400 is currently in normal working condition, and the ash discharge valve 160 is started sequentially. If the current signal and the speed signal of the first motor are not received, it means that the ash discharge valve 160 is faulty.

[0110] In one embodiment, the pulse bag dust collector fault inspection system also includes: a bucket elevator 500 arranged downstream of the scraper 400, the bucket elevator 500 is provided with a third motor, and the pulse bag dust collector fault inspection system also includes: a third current detection element for obtaining the current of the third motor and a third speed detection element for the speed of the third motor, the third current detection element and the third speed detection element are electrically connected to the controller, and when the scraper 400 is started, it also includes starting the bucket elevator 500. If the current signal and the speed signal of the third motor are not received, it indicates that the bucket elevator 500 has a fault.

[0111] In this embodiment, the pulse dust collector 100 refers to a method of removing dust attached to the filter medium (bag or filter cartridge) by blowing compressed air; according to the size of the dust collector 100, there may be several groups of pulse valves 150, which are controlled by a pulse controller or PLC. Each time a group of pulse valves 150 is opened to remove the dust from the part of the bag or filter cartridge it controls, while the other bags or filter cartridges work normally. After a period of time, the next group of pulse valves 150 is opened to clean the next part. The dust collector 100 is composed of a ash hopper 140, an upper box body, a middle box body, a lower box body and the like, and the upper, middle and lower boxes are divided into chambers 120 structures.

[0112] During operation, dust-laden gas enters the ash hopper 140 from the air inlet duct, coarse dust particles directly fall into the bottom of the ash hopper 140, and fine dust particles enter the middle and lower boxes upward with the turning of the air flow. Dust accumulates on the outer surface of the filter bag, and the filtered gas enters the upper box to the clean air collecting pipe-exhaust duct, and is discharged to the atmosphere through the exhaust fan.

[0113] The cleaning process is to first cut off the clean air outlet duct of the chamber, so that the bag of the chamber is in a state where there is no airflow (the air in the chamber 120 is stopped for cleaning). Then open the pulse valve 150 to use compressed air for pulse spraying and cleaning. The closing time of the cut-off valve is sufficient to ensure that the dust peeled off from the filter bag after spraying settles to the ash hopper 140, avoiding the phenomenon that the dust is attached to the surface of the adjacent filter bag with the air flow after leaving the surface of the filter bag, so that the filter bag is cleaned thoroughly, and the exhaust valve, pulse valve 150 and ash discharge valve 160 are fully automatically controlled by the programmable controller. The dust-containing gas enters from the air inlet 101, and when passing through the ash hopper 140, some large particles of dust in the gas are separated by inertia and gravity and fall directly into the bottom of the ash hopper 140. The dust-laden gas passes through the ash hopper 140 and enters the filter bag filtration area of ​​the middle box body. The gas passes through the filter bag, and the dust is retained on the outer surface of the filter bag. The purified gas enters the upper box body through the filter bag opening and is discharged from the air outlet 102.

[0114] As the filtering time of the dust collector 100 increases, the dust layer on the filter bag continues to accumulate, and the resistance of the dust removal equipment continues to rise. When the equipment resistance rises to the set value, the cleaning device starts to clean. First, the lifting valve 130 of a sub-chamber 120 is closed to cut off the filtering airflow, and then the electromagnetic pulse valve 150 is opened. The compressed air expands rapidly in the upper box in a very short time and rushes into the filter bag, causing the filter bag to expand and deform and vibrate. Under the action of the reverse airflow, the dust attached to the outer surface of the filter bag is peeled off and falls into the ash hopper 140. After cleaning, the electromagnetic pulse valve 150 is closed, the lifting valve 130 is opened, and the chamber resumes the filtering state. Cleaning is carried out in each chamber in turn, and a cleaning cycle is from the cleaning of the first chamber to the start of the next cleaning. The dust intercepted by the filtering and cleaning work falls into the ash hopper 140, and is then discharged centrally by the dust unloading device at the mouth of the ash hopper 140.

[0115] During the two-round pulse spraying phase, for a pulse bag dust collector fault inspection system equipped with bags, lift valves 130, pulse valves 150 and other equipment, any single component failure or multiple components failure at the same time will cause the concentration signal detected by the concentration detection element 301 at the outlet of the exhaust device 300 to exceed the preset concentration range. In order to accurately and efficiently locate the location of the currently faulty compartment 120 and the object of the fault, the present application provides a pulse bag dust collector fault inspection method. Specifically, the method can be performed in the following steps in specific use:

[0116] The smoke emission concentration at the end of the system rises abnormally, that is, the concentration signal detected by the concentration detection element 301 at the outlet of the exhaust device 300 exceeds the preset concentration range, and two rounds of chamber (i.e., bin) pulse injection are immediately started.

[0117] First, the lift valve 130 of the current sub-chamber 120 is closed.

[0118] After the lift valve 130 is closed normally, the subchamber 120 is in an offline state and the differential pressure should be zero or close to zero. If the differential pressure value still maintains the state before the lift valve 130 is closed, and the closing limit signal is not received, it means that the lift valve 130 is not closed. After the signal is given, it does not move to the full position, and it can be determined that the lift valve 130 is faulty.

[0119] When the dust collector 100 operates normally, the lifting valve 130 is in the open state. At this time, the cloth bags in the chamber 120 are filtering normally and there will be a certain resistance value. If the differential pressure value is still in the state before closing or close to the state before closing after closing the lifting valve 130, it is considered that the value is high.

[0120] In this embodiment, the lift valve 130 is provided with a position detection member 131, and the lift valve 130 has a first position for opening the first end of the sub-chamber 120 and a second position for closing the first end of the sub-chamber 120, and the position detection member 131 is used to detect whether the lift valve 130 reaches the first position and / or the second position. The lift valve 130 will have an open position and a closed position signal, and there will be signal feedback when it is in the open position and the closed position. If the differential pressure value of the sub-chamber 120 is detected to be high and the limit signal of the closed state of the lift valve 130 is not received, and the same condition occurs in the two rounds of injection, it is considered that the lift valve 130 of this chamber is faulty, and it is necessary to start manual positioning to check the lift valve 130 of this chamber, and repair or replace it in time.

[0121] If the differential pressure value of the detection chamber 120 is close to zero and the limit signal of the closed state of the lifting valve 130 is received, the pulse valve 150 is started to spray in sequence. If the air bag pressure detection shows normal and regular fluctuations, and the situation is the same after two rounds of spraying, it is considered that there is no problem with the pulse valve 150. If the air bag pressure is lower than the normal value and remains stable and cannot be restored to the normal value, it can be judged that there is a fault in the pulse valve 150 in this air bag, and the manual positioning inspection of the air bag pulse valve 150 is started, and timely maintenance or replacement is carried out.

[0122] If the air bag pressure is detected to fluctuate normally and the injection task is completed, the lifting valve 130 is opened. At this time, if the dust concentration of the flue gas at the end of the system increases instantaneously and the differential pressure value of the chamber 120 increases, and the same situation occurs in two rounds of detection, start manual positioning to check the bags, focusing on the dust accumulation in the bags.

[0123] If the dust concentration increases instantaneously and the differential pressure value of chamber 120 is basically normal, it can be determined that the bag is seriously dusted. If the differential pressure of chamber 120 is high, the bag may be stuck and the dust accumulation of the bag needs to be checked. Alternatively, the emission concentration still increases, but the differential pressure of chamber 120 remains unchanged or decreases, indicating that the filter bag has fallen or burned. At this time, the resistance is low, but the filtration area is reduced, which causes the increase in emissions. The bag should be checked for falling and burning. If the emission concentration does not change significantly and the differential pressure is normal, it means it has been normal.

[0124] At this time, manual positioning is required to focus on checking the bag falling off, open wire, etc. If the outlet concentration is detected to be unchanged and the 120 differential pressure of the sub-chamber is normal, the offline blowing task is completed.

[0125] After the offline blowing task is completed, the ash unloading task is started, and the bucket elevator 500 (if any) and the scraper 400 are started in sequence. If the motor current and speed signal of any of the equipment is not received, the manual inspection of the bucket elevator 500 (if any) and the scraper 400 is started, and the ash unloading valve 160 is started again in sequence. If the motor current and speed signal of any ash unloading valve 160 is not received, the manual inspection of the ash unloading valve 160 is started.

[0126] On the whole, based on the pulse bag dust collector fault inspection system, after executing the pulse bag dust collector fault inspection method, the fault point can be locked in the shortest time, which can buy time for maintenance; at the same time, intelligent inspection can be realized, labor costs can be reduced, and management efficiency can be improved.

[0127] Any numerical value cited herein includes all values ​​of lower and upper values ​​that increase by one unit from the lower limit to the upper limit, and there is at least a two-unit interval between any lower value and any higher value. For example, if the value of the quantity of a component or a process variable (such as temperature, pressure, time, etc.) is stated to be from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples that are intended to be clearly expressed, and it can be considered that all possible combinations of numerical values ​​listed between the lowest value and the highest value are clearly stated in this specification in a similar manner.

[0128] Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. "About" or "approximately" used with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30", including at least the specified endpoints.

[0129] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "consisting essentially of..." to describe a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, parts or steps herein also contemplates embodiments that consist essentially of these elements, ingredients, parts or steps. By using the term "may", it is intended to indicate that any attribute described that "may" include is optional.

[0130] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0131] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents possessed by such claims. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of the subject matter, nor should it be considered that the inventors did not consider the subject matter to be part of the disclosed inventive subject matter.

[0132] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0133] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulse bag dust collector fault inspection system, characterized in that: include: A dust collector, the dust collector having a hollow upper box body, a middle box body and an ash hopper, a plurality of relatively independent sub-chambers are arranged in the middle box body, opposite air inlets and air outlets are arranged on both sides of the middle box body, each of the sub-chambers is provided with a first end and a second end opposite to each other, a bag is arranged in each of the sub-chambers, a lifting valve is arranged near the first end, an air inlet valve is arranged near the second end, a pulse valve is arranged on the upper box body, an ash discharge valve is arranged at the outlet of the ash hopper, and a first detection component for obtaining the pressure difference of the sub-chambers is arranged between the first end and the second end; An exhaust device connected to the air outlet, wherein a concentration detection element is provided at the outlet of the exhaust device; A controller, electrically connected to at least the first detection component and the concentration detection element; The lift valve is provided with a position detection member, the lift valve has a first position for opening the first end of the sub-chamber and a second position for closing the first end of the sub-chamber, and the position detection member is used to detect whether the lift valve reaches the first position and / or the second position; The pulse bag filter fault inspection system further includes: a dust cleaning component connected to the pulse valve, the dust cleaning component includes: a spray pipe, an air bag, and a pulse controller for controlling the working state of the pulse valve, the pulse controller is electrically connected to the controller; The pulse bag filter fault inspection system also includes: a third detection component for obtaining the air bag pressure, and the third detection component is electrically connected to the controller.

2. The pulse bag dust collector fault inspection system according to claim 1, characterized in that: The pulse bag filter fault inspection system also includes: a second detection component for obtaining the pressure difference between the air inlet and the air outlet, and the second detection component is electrically connected to the controller.

3. The pulse bag dust collector fault inspection system according to claim 1, characterized in that: The ash discharge valve is provided with a first motor, and the pulse bag dust collector fault inspection system also includes: a first current detection component for obtaining the current of the first motor and a first speed detection component for the first motor speed, and the first current detection component and the first speed detection component are electrically connected to the controller.

4. The pulse bag dust collector fault inspection system according to claim 3, characterized in that: The pulse bag dust collector fault inspection system also includes: a scraper arranged downstream of the ash discharge valve, the scraper is provided with a second motor, and the pulse bag dust collector fault inspection system also includes: a second current detection device for obtaining the current of the second motor and a second speed detection device for the speed of the second motor, the second current detection device and the second speed detection device are electrically connected to the controller.

5. The pulse bag filter fault inspection system according to claim 4, characterized in that: The pulse bag dust collector fault inspection system also includes: a bucket elevator arranged downstream of the scraper conveyor, the bucket elevator is provided with a third motor, and the pulse bag dust collector fault inspection system also includes: a third current detection component for obtaining the current of the third motor and a third speed detection component for the speed of the third motor, the third current detection component and the third speed detection component are electrically connected to the controller.

6. The pulse bag filter fault inspection system according to any one of claims 1 to 5, characterized in that: A dust removal fan is arranged between the exhaust device and the air outlet.

7. The pulse bag dust collector fault inspection system according to claim 6, characterized in that: A muffler is arranged between the exhaust device and the dust removal fan.

8. A pulse bag dust collector fault inspection method of a pulse bag dust collector fault inspection system, characterized in that: The pulse bag dust collector fault inspection system comprises: a dust collector, wherein the dust collector has a hollow upper box body, a middle box body and an ash hopper, wherein a plurality of relatively independent sub-chambers are arranged in the middle box body, and opposite air inlets and air outlets are arranged on both sides of the middle box body, and each of the sub-chambers is provided with a first end and a second end opposite to each other, and each of the sub-chambers is provided with a bag, and a lifting valve is arranged near the first end, and the lifting valve is provided with a position detection component, and an air inlet valve is arranged near the second end, a pulse valve is arranged on the upper box body, and an ash discharge valve is arranged at the outlet of the ash hopper, and a valve is arranged between the first end and the second end. A first detection component for obtaining the chamber pressure difference is arranged between the chambers; an exhaust device connected to the air outlet, and a concentration detection component is arranged at the outlet of the exhaust device; a dust cleaning component connected to the pulse valve, and the dust cleaning component includes: a blowing pipe, an air bag, a pulse controller for controlling the working state of the pulse valve, and a third detection component for obtaining the air bag pressure; a controller, which is electrically connected to at least the first detection component, the concentration detection component, the position detection component of the lifting valve, the pulse controller, and the third detection component; the pulse bag dust collector fault inspection method includes: When the concentration signal detected by the concentration detection component at the outlet of the exhaust device exceeds the preset concentration range, at least two rounds of pulse blowing are performed on each chamber, and the detected signals of the first detection component, the position detection component, and the third detection component are used to identify the current faulty chamber position and the faulty object, and the faulty object includes any one of the following or a combination thereof: a cloth bag, a lifting valve, and a pulse valve in the chamber.

9. The pulse bag dust collector fault inspection method according to claim 8, characterized in that: When the concentration signal detected by the concentration detection element at the outlet of the exhaust device exceeds a preset concentration range, the method includes: closing the lift valve of the current chamber; if the pressure difference value of the current chamber is greater than the first pressure difference and the closing limit signal of the lift valve of the current chamber is not received, it indicates that the lift valve of the current chamber is faulty.

10. The pulse bag dust collector fault inspection method according to claim 9, characterized in that: After closing the lift valve of the current chamber, if the pressure difference value of the current chamber is less than the second pressure difference and a closing limit signal of the lift valve of the current chamber is received, it indicates that the lift valve of the current chamber is in a normal state, and the second pressure difference is less than the first pressure difference. Start the pulse valve for spraying. If the air bag pressure decreases and cannot be restored to the preset pressure range, it means that the pulse valve of the current chamber is faulty.

11. The pulse bag dust collector fault inspection method according to claim 10, characterized in that: After the pulse valve is started for spraying, if the air bag pressure is within the preset pressure range, it means that the pulse valve of the current chamber is in normal state; Open the lifting valve. If the concentration signal detected by the concentration detection element at the outlet of the exhaust device exceeds the preset concentration range and the current chamber differential pressure value increases, and the same situation occurs in both rounds of detection, it is identified that the current chamber bag is faulty.

12. The pulse bag dust collector fault inspection method according to claim 11, characterized in that: The ash discharge valve is provided with a first motor, and the pulse bag dust collector fault inspection system further includes: a first current detection element for obtaining the current of the first motor and a first speed detection element for the speed of the first motor; a scraper arranged downstream of the ash discharge valve, the scraper is provided with a second motor, a second current detection element for obtaining the current of the second motor and a second speed detection element for the speed of the second motor, the first current detection element, the first speed detection element, the second current detection element, and the second speed detection element are electrically connected to the controller, After the injection process is completed, the pulse bag dust collector fault inspection method also includes starting an ash unloading process.

13. The pulse bag filter fault inspection method according to claim 12, characterized in that: During the process of starting the dust removal process, the scraper is started first. If the current signal and the speed signal of the second motor are not received, it indicates that the scraper fails.

14. The pulse bag dust collector fault inspection method according to claim 13, characterized in that: After starting the scraper conveyor, if the current signal and speed signal of the second motor are received, it means that the scraper conveyor is currently in normal working condition, and the ash unloading valve is started sequentially. If the current signal and speed signal of the first motor are not received, it means that the ash unloading valve is faulty.

15. The pulse bag dust collector fault inspection method according to claim 13, characterized in that: The pulse bag dust collector fault inspection system further includes: a bucket elevator arranged downstream of the scraper, the bucket elevator is provided with a third motor, the pulse bag dust collector fault inspection system further includes: a third current detection element for obtaining the current of the third motor and a third speed detection element for the speed of the third motor, the third current detection element and the third speed detection element are electrically connected to the controller, When the scraper is started, the bucket elevator is also started. If the current signal and the speed signal of the third motor are not received, it indicates that the bucket elevator has a fault.

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