Cloth bag dust removal system for positioning fault pulse valve

Abstract

The utility model belongs to the technical field of pulse valve fault detection, and particularly relates to a cloth bag dust removal system for positioning a fault pulse valve, which comprises a plurality of bins, a fan, a compressed air main pipe, a blowing air inlet pipe, a blowing pulse valve and a microphone, and a plurality of groups of filter bags are mounted in each bin; the fan is communicated and fixed with the air outlet of each bin chamber through a pipeline, and a bin valve is arranged on the connecting pipeline of each bin chamber and the fan; the compressed air main pipe is arranged above the plurality of bins; one end of the blowing air inlet pipe is communicated and fixed with the compressed air main pipe, and the other end of the blowing air inlet pipe downwards penetrates through the upper cover of the chamber and extends to a group of filter bags inside the chamber; the injection pulse valves are arranged on the injection air inlet pipes; and the microphone is fixedly mounted above the plurality of bins and near the injection pulse valve and is used for collecting a sound signal generated when the injection pulse valve is started to inject. According to the utility model, workers do not need to go to the field for inspection, the faulted injection pulse valve can be accurately positioned in a central control room, and timely on-site maintenance and replacement are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of pulse valve fault detection, and in particular relates to a bag dust removal system for locating a faulty pulse valve. Background Art

[0002] In the aluminum ash treatment, a bag filter is used to collect dust. The pulse valve backwashes a group of filter bags with high-pressure air every 15 seconds to blow off the dust attached to the outside of the filter bags to ensure the cleanliness of the filter bags. The original DCS system in the central control room sends an opening signal to the injection pulse valve according to the set interval time, and records the time of sending the opening signal. If the pulse valve fails, although there is an opening signal, the pulse valve does not actually start the injection. If it does not work for a long time, it will cause the filter bag to be scrapped. Manual on-site inspections are required, and each inspection takes 20-30 minutes. Careful recording and identification can be used to find the faulty pulse valve. Due to the high location of the pulse valve on site, many fault points, and negligence of employees, the pulse valve failure will still not be discovered for a long time, the filter bag is damaged, the air pressure difference of the dust collector is abnormal, the dust removal effect is poor, and the production cost increases. Summary of the invention

[0003] The purpose of the utility model is to solve the problem that the faulty spray pulse valve is not easy to be discovered in time. A bag dust removal system for locating the faulty pulse valve is proposed. There is no need for workers to go to the site for inspection. The faulty spray pulse valve can be accurately located in the central control room, which is convenient for timely on-site maintenance and replacement.

[0004] To achieve the above purpose, the technical solution adopted is:

[0005] The utility model provides a bag dust removal system for locating a faulty pulse valve, comprising:

[0006] Multiple chambers, each chamber is equipped with multiple groups of filter bags;

[0007] The fan is connected and fixed to the exhaust port of each chamber through a pipeline, and a chamber valve for controlling the normal dust removal of each chamber is provided on the connecting pipeline between each chamber and the fan;

[0008] A compressed air main pipe is arranged above the multiple chambers and is used to introduce compressed air;

[0009] The air inlet pipe has one end connected and fixed to the compressed air main pipe, and the other end extends downward through the upper cover of the chamber to a group of filter bags inside the chamber, and the compressed air blows off the dust attached to the outside of the filter bags;

[0010] A spray pulse valve, which is arranged on each spray air inlet pipe;

[0011] And a microphone, which is fixedly installed above the multiple chambers and near the spray pulse valve, is used to collect the sound signal of the spray pulse valve opening for spraying.

[0012] According to the bag dust removal system for locating faulty pulse valves of the utility model, preferably, it also includes a central control room DCS system, which is connected to the fan, the bin valve, the spray pulse valve and the microphone.

[0013] According to the bag dust removal system for locating faulty pulse valves of the utility model, preferably, the DCS system in the central control room controls the actions of the fan, the bin valve and the spray pulse valve, and saves the spray sound signal of the spray pulse valve opening collected by the microphone to locate the faulty spray pulse valve.

[0014] According to the bag dust removal system for locating faulty pulse valves of the utility model, preferably, a simple shed is built above the multiple chambers, and the chamber valves, the spray pulse valves and the microphone are all placed inside the simple shed.

[0015] According to the bag dust removal system for locating faulty pulse valves of the utility model, preferably, an air inlet is provided on the lower left end side wall of each chamber, and dust-containing air enters the chamber through the air inlet; the exhaust port of each chamber is arranged opposite to the air inlet, and is provided on the upper right end side wall of each chamber.

[0016] The beneficial effects achieved by adopting the above technical solution are:

[0017] The bag dust removal system for locating faulty pulse valves of the utility model installs a microphone near the spray pulse valve to collect the sound signal of the spray pulse valve opening the spray, and the sound signal transmission record is stored in the DCS system of the central control room. If a certain spray pulse valve fails, it will not emit a high-decibel spray sound. The DCS system of the central control room will be missing a sound signal at this time point. According to the time point of the missing sound signal, the number of the faulty spray pulse valve can be found out, and the faulty spray pulse valve can be accurately located. In this way, there is no need for workers to go to the site for inspection. The number and fault points of the spray pulse valve can be grasped at any time in the central control room, which is convenient for timely on-site maintenance and replacement, reducing the workload of workers, effectively protecting the filter bag, extending the service life of the filter bag, reducing production costs, and ensuring the dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention are briefly introduced below. The drawings are only used to show some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.

[0019] Figure 1 : is a structural schematic diagram of a bag dust removal system for locating a faulty pulse valve according to an embodiment of the utility model (for the sake of simplicity, only two of the eight chambers are shown in the figure);

[0020] Figure 2It is a schematic diagram of the spray pulse valve controlled by the DCS system in the central control room of the embodiment of the utility model.

[0021] The meanings of the numbers in the figure are:

[0022] 1. Chamber, 2. Filter bag, 3. Fan, 4. Chamber valve, 5. Compressed air main pipe, 6. Injection air inlet pipe, 7. Injection pulse valve, 8. Microphone, 9. Simple shed, 10. DCS system in the central control room. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings of the specific embodiments of the utility model to clearly and completely describe the exemplary scheme of the utility model. Unless otherwise defined, the technical terms or scientific terms used in the utility model should be the common meanings understood by people with ordinary skills in the relevant field.

[0024] like Figure 1 As shown, the bag dust removal system for locating faulty pulse valves in this embodiment includes multiple chambers 1, filter bags 2, fans 3, chamber valves 4, compressed air main pipes 5, injection air inlet pipes 6, injection pulse valves 7, microphones 8 and a central control room DCS system 10.

[0025] This embodiment uses 8 bins 1, and 7 groups of filter bags 2 are installed in each bin 1. An air inlet is provided on the lower left side wall of each bin 1, and dust-containing air enters the bin 1 through the air inlet; the exhaust port of each bin 1 is arranged opposite to the air inlet, and the exhaust port is provided on the upper right side wall of each bin 1, and the filtered air is discharged through the exhaust port. The fan 3 is connected and fixed to the exhaust port of each bin 1 through a pipeline, and a bin valve 4 is provided on the connecting pipeline between each bin 1 and the fan 3, and the bin valve 4 is used to control the normal dust removal of the bin 1; when the bin valve 4 of a bin 1 is opened, the fan 3 generates negative pressure at the exhaust port, so that air enters the bin 1 from the air inlet, attracts air to pass through the filter bag 2, and captures the dust particles therein on the filter bag 2. Here, the pipes connected to the exhaust ports of the 8 bins 1 are all connected to a main pipe, and the main pipe is connected to the fan 3.

[0026] The compressed air main pipe 5 is arranged above the multiple chambers 1 to transport the compressed air generated by the air compressor. One end of the spray air inlet pipe 6 is connected and fixed to the compressed air main pipe 5, and the other end extends downward through the upper cover of the chamber 1 to a group of filter bags 2 inside the chamber 1, and the compressed air blows off the dust attached to the outside of the filter bags 2. A spray pulse valve 7 is provided on each spray air inlet pipe 6 to control the compressed air spray.

[0027] The microphone 8 is fixedly installed above the multiple chambers 1 and near the spray pulse valve 7, and is used to collect the sound signal of the spray pulse valve 7 when the spray pulse valve 7 is turned on. The sound signal will be used as a basis for determining whether the spray pulse valve 7 is faulty.

[0028] A simple shed 9 is built above the multiple chambers 1, and the chamber valve 4, the spray pulse valve 7 and the microphone 8 are all placed inside the simple shed 9. The simple shed 9 is used to prevent rain and wind to avoid damage to the components caused by long-term exposure to the outdoors.

[0029] The central control room DCS system 10 of this embodiment is connected to the fan 3, the bin valve 4, the spray pulse valve 7 and the microphone 8, and can control the actions of the fan 3, the bin valve 4 and the spray pulse valve 7, and save the spray opening sound signal of the spray pulse valve 7 collected by the microphone 8, and locate the faulty spray pulse valve 7.

[0030] The DCS system 10 in the central control room sends an opening signal to the spray pulse valve 7 according to the set interval time, and records the time of sending the opening signal. Therefore, the corresponding spray pulse valve 7 that should be opened can be queried through the time. The DCS system is currently widely used on site. The improvement of this embodiment is that a microphone 8 is set to collect the sound signal of the spray pulse valve 7 when the spray is turned on. Whether the sound signal at a certain time point is empty, it can be known whether the corresponding spray pulse valve 7 is faulty.

[0031] like Figure 2 As shown, the entire bag dust removal system includes 8 chambers 1, each of which is equipped with 7 groups of filter bags 2. The blowing air inlet pipe 6 of each group of filter bags 2 is individually controlled by a blowing pulse valve 7. Close the No. 1 chamber valve 4, the No. 1 chamber 1 stops dust removal, and the other 7 chambers 1 perform normal dust removal. When the blowing starts, the 1# blowing pulse valve 7 is opened, and compressed air is blown to the first group of filter bags 2 to make the dust attached to the outside of the first group of filter bags 2 fall off. When the 1# blowing pulse valve 7 is opened, a crisp high-decibel sound is generated. The DCS system is set to close the No. 1 chamber valve 4 and open the 1# blowing pulse valve 7 with an interval of 10 seconds. The 1# blowing pulse valve 7 is closed after 15 seconds of blowing, and the 2# blowing pulse valve 7 is opened for blowing. Each interval is 15 seconds. The 3#, 4#, 5#, 6#, and 7# blowing pulse valves 7 are opened for blowing in turn. The 7# blowing pulse valve 7 is closed after 10 seconds of blowing, and the No. 1 chamber valve 4 is opened. , No. 1 bin 1 performs dust removal work normally, No. 2 bin valve 4 is closed, and the remaining 7 bins 1 perform dust removal normally. The DCS system is set to open No. 1 bin valve 4, close No. 2 bin valve 4, and open 8# spray pulse valve 7 with an interval of 10 seconds. 8# spray pulse valve 7 sprays for 15 seconds and then closes. 9# spray pulse valve 7 opens and sprays. Each interval is 15 seconds. 10#, 11#, 12#, 13#, 14# spray pulse valves 7 are opened and sprayed in turn. Repeat the above process, spray No. 3, 4, 5, 6 and 7 bins 1 in turn. The whole spraying process takes 880 seconds. At this time, the 8 bins 1 are in normal dust removal working state. After stopping the spraying for 600 seconds, start the next spraying process. Repeat the above process to keep the filter bag 2 clean and ensure the dust removal effect.

[0032] When each spray pulse valve 7 opens normally without any fault, it will emit a clear high-decibel sound. A microphone 8 is installed near the spray pulse valve 7 to collect the sound signal of the spray pulse valve 7 opening the spray. The sound signal transmission record is stored in the DCS system 10 in the central control room. If a spray pulse valve 7 fails, it will not emit a high-decibel spray sound. The DCS system 10 in the central control room will miss a sound signal at this time point. The number of the faulty spray pulse valve 7 can be found according to the time point of the missing sound signal. In this way, there is no need for workers to go to the site for inspection. The actual working condition of the spray pulse valve 7 can be checked in the central control room, which is convenient for timely maintenance and replacement, reduces the workload of workers, and effectively protects the filter bag 2.

[0033] It should be noted that when one element is “connected”, “coupled” or “connected” to another element, it may mean that they are directly connected, coupled or connected, but it should be understood that there may be intermediate elements between the two; that is, the positional relationships of direct connection and indirect connection are covered.

[0034] It should be noted that the use of "a" or "an" and similar words does not necessarily indicate a quantitative limitation. "Include" or "comprising" and similar words mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects.

[0035] It should be noted that terms such as "up", "down", "left" and "right" indicating orientation or positional relationship are only used to indicate relative positional relationship. This is for the convenience of describing the present utility model, and does not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0036] The preferred embodiments for implementing the present invention have been described in detail above, but it should be understood that the role of these embodiments is only to exemplify, and is not intended to limit the scope, applicability or configuration of the present invention in any way. The protection scope of the present invention is defined by the attached claims and their equivalents. A person of ordinary skill in the art can make many changes to the above embodiments under the guidance of the present invention, and these changes all fall within the protection scope of the present invention.

Claims

1. A bag dust removal system for locating faulty pulse valves, characterized in that: include: Multiple chambers, each chamber is equipped with multiple groups of filter bags; The fan is connected and fixed to the exhaust port of each chamber through a pipeline, and a chamber valve for controlling the normal dust removal of each chamber is provided on the connecting pipeline between each chamber and the fan; A compressed air main pipe is arranged above the multiple chambers and is used to introduce compressed air; The air inlet pipe has one end connected and fixed to the compressed air main pipe, and the other end extends downward through the upper cover of the chamber to a group of filter bags inside the chamber, and the compressed air blows off the dust attached to the outside of the filter bags; A spray pulse valve, which is arranged on each spray air inlet pipe; And a microphone, which is fixedly installed above the multiple chambers and near the spray pulse valve, is used to collect the sound signal of the spray pulse valve opening for spraying.

2. The bag dust removal system for locating faulty pulse valve according to claim 1 is characterized in that: It also includes a central control room DCS system, which is connected to the fan, bin valve, injection pulse valve and microphone.

3. The bag dust removal system for locating faulty pulse valve according to claim 2 is characterized in that: The DCS system in the central control room controls the actions of the fan, the bin valve and the injection pulse valve, and saves the injection pulse valve opening and blowing sound signals collected by the microphone to locate the failed injection pulse valve.

4. The bag dust removal system for locating faulty pulse valve according to claim 1 or 2, characterized in that: A simple shed is built above the multiple chambers, and the chamber valves, the spray pulse valves and the microphone are all placed inside the simple shed.

5. The bag dust removal system for locating faulty pulse valve according to claim 1 is characterized in that: An air inlet is arranged on the lower left side wall of each chamber, and dust-containing air enters the chamber through the air inlet; the exhaust port of each chamber is arranged opposite to the air inlet and is arranged on the upper right side wall of each chamber.

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