Combined high-efficiency dust collector

Abstract

The utility model relates to dust remover technical field especially relates to a combined high -efficient dust remover, include: six air bags, install a plurality of electromagnetic pulse valve on the air bag, the outside installation of electromagnetic pulse valve has sound wave sensor, the outside installation of electromagnetic pulse valve has current sensor, the outside of air bag is provided with information acquisition module, and information acquisition module includes pressure sensor, the outside of pressure sensor sets up the outside of air bag. A combined high -efficient dust remover provided by the utility model, through the collection of the sound wave signal of blowing action, pressure signal and electromagnetic valve current signal on the air bag, realizes the judgment of the fault in the intelligent inspection equipment, exports through the interface to the internal signal, forms intelligent analysis, fault data alarm, fault data historical record function. Can view on the on -the -spot server, also can watch in remote DCS picture.

Description

Technical Field

[0001] This utility model relates to the field of dust collector technology, and in particular to a combined high-efficiency dust collector. Background Technology

[0002] The electrostatic precipitator-baghouse hybrid dust collector comprehensively utilizes and organically combines the dust removal advantages of electrostatic precipitators and baghouse dust collectors. It first uses an electric field to capture a large amount of dust from the flue gas, and then uses a filter bag to collect the remaining fine dust, making it a combined high-efficiency dust collector. It features stable dust removal (≤20mg / Nm3) and excellent performance. The upstream electric field pre-collects 70-90% or more of the dust in the flue gas; the downstream baghouse dust collector intercepts and collects the remaining dust. Bag cleaning is achieved using a PLC-controlled electromagnetic pulse valve that opens and uses low-pressure pulsed compressed air. The PLC controller sends commands to a set of pulse valves according to the preset cleaning interval and sequence to perform cleaning sequentially. Currently, manual inspection is used, with only local pressure gauges on the air tank and remote pressure transmission signals from the main pipe available. Inspection after a fault occurs is time-consuming and labor-intensive. Prolonged malfunctions can lead to dust accumulation in the filter bags, increased differential pressure in the electrostatic precipitator, increased flue gas resistance, and a decrease in the dust concentration at the electrostatic precipitator outlet.

[0003] The on-site dust collection pulse-jet system is installed at the top of the dust collector. Equipment inspections and daily operational checks are conducted periodically by operators. However, during daily inspections, little attention is paid to the equipment's operational status; the dust collector's operating status is usually judged by the bag filter pressure differential. There is no accurate basis for determining whether the pulse-jet system is functioning properly. Inspections require manual climbing to the top of the dust collector, which is time-consuming. Furthermore, daily inspections cannot accurately determine if the pulse valves are malfunctioning. In rainy or snowy weather, the ladder may be flooded or icy, posing a safety hazard for personnel climbing up and down the dust collector. A malfunctioning pulse valve can result in continuous air output, poor bag filter pulse-jet performance, and increased induced draft fan output power. During major maintenance, dedicated personnel spend time inspecting the pulse valves, locating problems with the valve body or control system, and performing repairs.

[0004] By adding intelligent monitoring to form an online decision-making and prediction system, faults in the pulverizing equipment can be detected in a timely manner. Abnormal equipment operation can be detected in the control room, and alarm information can be immediately sent to operators on the control screen. This solves the problems caused by untimely detection of potential hazards and the heavy workload of reporting, summarizing, and analyzing data, ensuring that the equipment is always in good operating condition. It also ensures that environmental parameters do not exceed standards and reduces the workload of equipment inspection and operation patrol personnel.

[0005] Therefore, it is necessary to provide a new type of combined high-efficiency dust collector to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a combined high-efficiency dust collector.

[0007] The present invention provides a combined high-efficiency dust collector comprising: six air tanks, each air tank being equipped with a plurality of electromagnetic pulse valves, each electromagnetic pulse valve having an external acoustic sensor and an external current sensor, and an external information acquisition module being provided on the air tank. The information acquisition module includes a pressure sensor, which is externally mounted on the outside of the air tank. The pressure sensor is electrically connected to a signal acquisition device, which is externally electrically connected to a data analysis server. The data analysis server is externally electrically connected to a DCS / PLC. The data analysis server calculates and determines the fault type of the electromagnetic pulse valve, then sends an alarm signal to the DCS or PLC to present the information directly to the operators.

[0008] Preferably, the acoustic wave signal of the blowing action collected by the acoustic wave sensor is used to determine the diaphragm status of the electromagnetic pulse valve, including whether the diaphragm is aged, stuck, or leaking.

[0009] Preferably, the reference value of the air tank pressure signal collected by the pressure sensor is 0.3-0.4 MPa, and the air tank supply pressure, air tank leakage status and electromagnetic pulse valve operation status are determined by the pressure difference during injection.

[0010] Preferably, the current signal of the solenoid valve collected by the current sensor is used to determine whether the solenoid pulse valve is operating normally and its opening and closing stroke status, and to record its number of working times and service life to achieve early warning.

[0011] Preferably, the dust collector is installed outside the cable tray, and the six air tanks are installed inside the dust collector on one side.

[0012] Compared with related technologies, the combined high-efficiency dust collector provided by this utility model has the following beneficial effects: This invention collects the acoustic signals of the blowing action, the pressure signals on the air tank, and the current signals of the solenoid valve, enabling fault diagnosis in intelligent inspection equipment. The internal signals are output through an interface, forming intelligent analysis, fault data alarm, and fault data history recording functions. The data can be viewed on a local server or on a remote DCS screen.

[0013] Based on the existing equipment and without changing the existing control system, this utility model monitors the blowing system. Through signal detection, it collects and analyzes fault signals and action signals. The signals include blowing sound wave signals, air bag pressure detection device, solenoid valve pulse valve action signals, and circuit output signals, which are connected to the bag filter pulse intelligent inspection equipment to improve human efficiency and the timeliness of equipment failure. Attached Figure Description

[0014] Figure 1A schematic diagram of the structure of a combined high-efficiency dust collector provided by this utility model; Figure 2 for Figure 1 The diagram shows the structural diagram of the air chamber pressure.

[0015] The following are the labels in the diagram: 1. Air tank; 2. Electromagnetic pulse valve; 3. Pressure sensor; 4. Signal acquisition device; 5. Data analysis server; 6. DCS / PLC; 7. Operator. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0017] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0018] Please see Figures 1 to 2 A combined high-efficiency dust collector includes: six air tanks 1, uniformly installed on one side inside the dust collector, forming a centralized air supply and pulse-jet control unit. The air tank 1 serves as a storage and distribution carrier for compressed air, and its pressure stability directly determines the pulse-jet cleaning effect. During normal operation, it needs to maintain the same air supply pressure reference value as the main pipe, i.e., 0.3-0.4 MPa. Each air tank 1 is equipped with a dedicated pressure sensor 3 and a corresponding air pressure regulating device to ensure stable air supply pressure and real-time monitoring. Multiple electromagnetic pulse valves 2 are installed on each air tank 1, with 12-13 electromagnetic pulse valves 2 evenly distributed on each tank. All electromagnetic pulse valves 2 are uniformly controlled by a PLC controller according to a preset program, spraying compressed air into the filter bags through a low-pressure pulse jet to complete the cleaning operation. An acoustic sensor and a current sensor are installed externally on each electromagnetic pulse valve 2. An information acquisition module is installed externally on each air tank 1. The information acquisition module includes a pressure sensor 3, which is externally mounted on the air tank 1. The pressure sensor 3 is electrically connected to a signal acquisition unit 4, which is externally connected to a data analysis server 5. The data analysis server 5 is externally connected to a DCS / PLC 6. The data analysis server 5 calculates and determines the fault type of the electromagnetic pulse valve 2, then sends an alarm signal to the DCS or PLC for direct presentation to the operators 7. The information acquisition module, together with the acoustic sensor, current sensor, and signal acquisition unit 4 on the electromagnetic pulse valve 2, forms a complete data acquisition link. The pressure sensor 3 is directly mounted on the outside of the air tank 1, closely fitting the wall of the air tank 1 to ensure the accuracy of pressure signal acquisition. Signals collected by each sensor are uniformly transmitted to the signal acquisition unit 4. After signal conditioning and preliminary conversion, the signal acquisition unit 4 transmits the signals to the data analysis server 5 via a dedicated communication line. Finally, the data analysis server 5 establishes data interaction with the DCS / PLC 6 system, realizing real-time push of alarm signals and visualization of status information.

[0019] The acoustic wave sensor collects the acoustic signal of the blowing action. The acoustic wave sensor collects the acoustic signal generated by the solenoid pulse valve 2 when blowing. By analyzing the decibel peak value, waveform characteristics and duration of the signal, multiple fault states can be accurately determined, including: whether the solenoid valve actually performs the action after the control system issues the command, whether the diaphragm in the valve body has hardened due to aging, whether the diaphragm has adhesion problems, whether the diaphragm has air leakage defects, etc. It is the core reference signal for fault judgment and is used to judge the diaphragm state of the solenoid pulse valve 2, including whether the diaphragm is aged, adhered or leaking. The pressure sensor 3 collects the pressure signal of the air tank 1 with a reference value of 0.3-0.4MPa. The pressure difference during blowing is used to judge the air supply pressure of the air tank 1, the air leakage state of the air tank 1 and the action state of the solenoid pulse valve 2. The current sensor collects the solenoid valve current signal. The pressure sensor collects the pressure change of the air tank 1 in real time during blowing and calculates the pressure difference as an auxiliary judgment signal. This signal can effectively identify whether the air supply pressure of air tank 1 is normal, whether there is air leakage in the air tank 1 body, whether the solenoid valve diaphragm is leaking, and whether the solenoid valve on the air tank 1 is actually operating. It complements the sound wave signal to verify whether the solenoid pulse valve 2 is operating normally and its opening and closing stroke status. It also records the number of times it operates and its service life to achieve early warning. The dust collector is installed outside the cable tray, and the six air tanks 1 are installed inside the dust collector on one side.

[0020] The working principle of the combined high-efficiency dust collector provided by this utility model is as follows: First, the combined high-efficiency dust collector is started, and the air tank 1 begins to store compressed air for use. At this time, the pressure sensor 3 in the information acquisition module continuously collects the pressure signal of the air tank 1 and transmits the initial pressure data to the signal acquisition unit 4. After the signal acquisition unit 4 performs preliminary processing of the data, it sends it to the data analysis server 5. The data analysis server 5 compares the pressure value with the reference value of 0.3-0.4MPa to confirm the initial air supply status of the air tank 1.

[0021] When the dust collector enters the dust removal operation stage, the front-stage electric field first captures 70-90% of the dust in the flue gas, and the remaining fine dust enters the downstream bag filter dust collector. At this time, the DCS / PLC6 sends an opening command to the electromagnetic pulse valve 2 according to the preset dust removal interval and dust removal sequence. The electromagnetic pulse valve 2 is activated, and the compressed air in the air tank 1 blows the filter bag through the electromagnetic pulse valve 2 to achieve filter bag cleaning.

[0022] During the blowing process of the electromagnetic pulse valve 2, the acoustic sensor synchronously collects the acoustic signal of the blowing action and transmits the signal to the signal acquisition unit 4; at the same time, the current sensor collects the current signal of the electromagnetic pulse valve 2 and also transmits it to the signal acquisition unit 4; the pressure sensor 3 collects the pressure signal when the air bag 1 blows and also sends it to the signal acquisition unit 4. After the three types of signals are aggregated in the signal acquisition unit 4, they are uniformly transmitted to the data analysis server 5.

[0023] The data analysis server 5 processes the received signals: it uses acoustic signals to determine the diaphragm status of the electromagnetic pulse valve 2 and identifies whether the diaphragm is aging, sticking, or leaking; it uses current signals to determine whether the electromagnetic pulse valve 2 operates normally and whether its opening and closing stroke meets the standard, and records its number of operations to assess its service life; it uses the pressure difference during blowing to determine whether the air supply pressure of the air tank 1 is stable and whether there is any leakage in the air tank 1, and at the same time, it helps to confirm the operating status of the electromagnetic pulse valve 2.

[0024] If the data analysis server 5 determines that there is a fault in the electromagnetic pulse valve 2 or the air tank 1, it will immediately send the corresponding alarm signal to the DCS / PLC 6. The DCS / PLC 6 will present the alarm information to the operator 7 in a visual manner, indicating the fault type and location, so that the operator can be aware of the equipment abnormality in a timely manner.

[0025] When operator 7 receives an alarm message, he / she can directly obtain the fault details in the control room without having to climb to the top of the dust collector for inspection, thus avoiding the safety hazards of climbing ladders in rainy or snowy weather and reducing the time spent on manual inspection. If the fault needs to be handled, the operator can locate the faulty component based on the alarm message and carry out targeted repair or replacement.

[0026] During the continuous operation of the dust collector, the information acquisition module will cyclically collect the pressure of the air tank 1 and the sound wave and current signal of the electromagnetic pulse valve 2. The data analysis server 5 will continuously compare data and diagnose faults, monitor the equipment status in real time, ensure the stable dust removal effect of the bag filter, and avoid problems such as increased differential pressure of the electrostatic precipitator and increased flue gas resistance caused by dust accumulation in the bag filter.

[0027] When the dust collector completes its dust removal operation or undergoes a major overhaul, the data analysis server 5 will summarize all data during the equipment's operation, including the number of times the electromagnetic pulse valve 2 operates and the pressure fluctuation of the air tank 1, providing maintenance personnel with a reference for the equipment's status. This will facilitate the arrangement of dedicated personnel to efficiently inspect the pulse valve and control system and complete equipment maintenance.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A combined high-efficiency dust collector, characterized in that, include: Six air tanks (1), each air tank (1) is equipped with multiple electromagnetic pulse valves (2), each electromagnetic pulse valve (2) is equipped with an acoustic sensor, each electromagnetic pulse valve (2) is equipped with a current sensor, and each air tank (1) is equipped with an information acquisition module. The information acquisition module includes a pressure sensor (3), which is externally located outside the air tank (1). The pressure sensor (3) is electrically connected to a signal acquisition device (4), which is externally connected to a data analysis server (5). The data analysis server (5) is externally connected to a DCS / PLC (6). The data analysis server (5) calculates and determines the fault type of the electromagnetic pulse valve (2) and sends an alarm signal to the DCS or PLC to present it to the operators (7).

2. The combined high-efficiency dust collector according to claim 1, characterized in that, The acoustic wave sensor collects the acoustic wave signal of the blowing action to determine the diaphragm status of the electromagnetic pulse valve (2), including whether the diaphragm is aged, stuck or leaking.

3. The combined high-efficiency dust collector according to claim 1, characterized in that, The pressure sensor (3) collects the pressure signal reference value of the air bag (1) at 0.3-0.4 MPa. The pressure difference during the blowing process is used to determine the air supply pressure of the air bag (1), the air leakage status of the air bag (1), and the operation status of the electromagnetic pulse valve (2).

4. A combined high-efficiency dust collector according to claim 1, characterized in that, The current sensor collects the current signal of the solenoid valve, which is used to determine whether the solenoid pulse valve (2) is operating normally, its opening and closing stroke status, and to record its working number and service life to achieve early warning.

5. A combined high-efficiency dust collector according to claim 1, characterized in that, The dust collector is installed outside the cable tray, and the six air tanks (1) are installed inside the dust collector on one side.

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