Electric precipitator shutdown fault control system based on acetylene preparation
By introducing a PLC controller and automation devices into the electrostatic precipitator, real-time monitoring and automated control of the electrostatic precipitator can be achieved, solving the problem of relying on manual experience for fault diagnosis of the electrostatic precipitator and improving the accuracy of fault detection and the stability of equipment operation.
Patent Information
- Application Number
- CN202423212531.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-25
AI Technical Summary
In existing technologies, fault diagnosis of electrostatic precipitators relies on human experience, which leads to long diagnosis times and affects the timeliness of equipment maintenance and operational stability.
A PLC controller is used to detect and control faults in the electrostatic precipitator. It integrates signal inputs from pressure sensors, cabinet door detectors, and emergency stop buttons to achieve automated monitoring and control, combined with the automated operation of the corona discharge device and cleaning device.
It improves the accuracy of fault detection and the stability of equipment operation, reduces the possibility of human error, and reduces the frequency of equipment downtime and maintenance costs.
Smart Images
Figure CN223747760U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of acetylene preparation, especially to a kind of based on the shutdown failure control system of electric dust collector of acetylene preparation. BACKGROUND
[0002] Acetylene cracking device mainly uses natural gas (such as methane) as raw material, and generates acetylene through cracking reaction. Cracking reaction is usually carried out without catalyst and heat carrier, and a large amount of heat is generated by partial oxidation reaction of natural gas and oxygen, so that a part of natural gas is pyrolyzed to generate cracking gas containing acetylene. The electric dust collector is one of the key equipment of acetylene cracking device, which is responsible for removing carbon black in cracking gas to ensure stable operation of subsequent process.
[0003] Due to the importance of electric dust collector, once failure occurs, shutdown will trigger interlock protection mechanism, resulting in acetylene furnace shutdown. However, there are many reasons for the shutdown of electric dust collector, and once a problem occurs, operators need to rely on experience and manual inspection to diagnose equipment failure, which may cause long diagnosis time and affect timely maintenance and recovery of equipment.
[0004] Therefore, in view of the above problems, the electric dust collector shutdown failure control system based on acetylene preparation is provided, which is a technical problem to be solved in the field. UTILITY MODEL CONTENT
[0005] The utility model aims at overcoming the shortcomings of prior art, and provides an electric dust collector shutdown failure control system based on acetylene preparation.
[0006] The utility model aims at overcoming the shortcomings of prior art, and provides an electric dust collector shutdown failure control system based on acetylene preparation.
[0007] The first aspect of the utility model provides an electric dust collector shutdown failure control system based on acetylene preparation, which comprises an electric dust collector and a PLC electric control cabinet.
[0008] The feeding end of the electric dust collector is connected with external gas-liquid separation scrubber, the gas outlet of the electric dust collector is arranged at the top, and a pressure sensor is arranged in the electric dust collector.
[0009] The PLC electric control cabinet comprises a cabinet body and a PLC controller arranged in the cabinet body, the front of the cabinet body is provided with a cabinet door and an emergency shutdown button, and a cabinet door opening and closing detector is further arranged on the cabinet door.
[0010] The shutdown signal input end of the PLC controller is connected with the pressure signal of the pressure sensor, the cabinet door opening and closing signal of the cabinet door opening and closing detector and the emergency shutdown signal of the emergency shutdown button respectively, and the control signal output end of the PLC controller outputs control signal to the electric dust collector.
[0011] Further, the electric dust collector is internally provided with a corona device and a cleaning device for cleaning the corona device, and the control signal output end of the PLC controller outputs control signals to the corona device and the cleaning device respectively.
[0012] The waste liquid outlet of the electric dust collector is arranged at the bottom.
[0013] Further, the corona device comprises a first mounting frame, a corona wire and a conductive pipe arranged on the first mounting frame, the first mounting frame is arranged on the inner wall of the electric dust collector, and the corona wire and the conductive pipe are electrically connected with the high-voltage power supply through a relay.
[0014] The control signal output end of the PLC controller outputs control signals to the relay.
[0015] Further, the cleaning device comprises a second mounting frame and a cleaning water pipe arranged on the second mounting frame, the second mounting frame is arranged on the inner wall of the electric dust collector and above the first mounting frame, and the cleaning water pipe is provided with a water spraying port.
[0016] The water inlet of the cleaning water pipe is further provided with a solenoid valve, and the control signal output end of the PLC controller outputs control signals to the solenoid valve.
[0017] Further, the shutdown signal input end of the PLC controller is further connected with a DCS remote shutdown signal and a process interlock shutdown signal.
[0018] Further, the front face of the cabinet body is further provided with a shutdown reason display lamp, and the shutdown display output end of the PLC controller is connected with the shutdown reason display lamp.
[0019] Further, the model of the PLC controller is FX3U-80MR-001.
[0020] Further, the system for preparing acetylene comprises a cracking reactor, a gas-liquid separation scrubber and an electric dust collector, the feed inlet of the cracking reactor is connected with raw natural gas, the discharge outlet of the cracking reactor is connected with the gas-liquid separation scrubber, and the discharge outlet of the gas-liquid separation scrubber is connected with the electric dust collector.
[0021] Further, the discharge outlet of the electric dust collector is connected with an external cracking gas gas cabinet.
[0022] The beneficial effects of the utility model are as follows:
[0023] In an exemplary embodiment of the present application, the PLC controller is used for control, and has the advantages that: the accuracy of fault detection is improved, the PLC controller has powerful fault diagnosis function, can monitor the running state of each component of the electric dust collector in real time, through the PLC controller, the key parameters of the electric dust collector including pressure can be accurately detected, once abnormal or fault signs are found, the PLC controller can immediately send an alarm signal and display fault information. At the same time, the maintenance cost can be reduced: on the one hand, the PLC controller can monitor the running state of the equipment in real time, and timely find and handle potential problems, so as to avoid equipment downtime maintenance due to faults; on the other hand, the PLC controller can realize automatic operation, reduce the possibility of manual intervention and misoperation, so as to reduce the equipment failure rate caused by human factors. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 A schematic diagram of the electric dust collector shutdown fault control system based on acetylene preparation provided in an exemplary embodiment of the present application is shown in the figure.
[0025] Figure 2 A specific structure schematic diagram of the electric dust collector provided in an exemplary embodiment of the present application is shown in the figure.
[0026] Figure 3 A PLC controller signal access schematic diagram provided in an exemplary embodiment of the present application is shown in the figure.
[0027] Figure 4 A corona device electric signal schematic diagram provided in an exemplary embodiment of the present application is shown in the figure.
[0028] Figure 5 A cleaning device electric signal schematic diagram provided in an exemplary embodiment of the present application is shown in the figure.
[0029] Figure 6 A signal access and output schematic diagram of the PLC controller when FX3U-80MR-001 is used in an exemplary embodiment of the present application is shown in the figure.
[0030] Figure 7 A device connection schematic diagram of the acetylene preparation system provided in an exemplary embodiment of the present application is shown in the figure.
[0031] In the figure, 1 - electric dust collector, 101 - feed end, 102 - discharge end, 103 - pressure sensor, 104 - corona device, 10401 - first mounting bracket, 10402 - corona wire, 10403 - conductive tube, 10404 - relay, 10405 - high-voltage power supply, 105 - cleaning device, 10501 - second mounting bracket, 10502 - cleaning water pipe, 10503 - electromagnetic valve, 106 - waste liquid outlet, 2 - PLC electric control cabinet, 201 - cabinet body, 20101 - cabinet door, 2010101 - cabinet door opening and closing detector, 20102 - emergency stop button, 20103 - stop reason display lamp, 202 - PLC controller, 3 - gas-liquid separation scrubber, 4 - cracking reactor, 5 - cracking gas tank. DETAILED DESCRIPTION
[0032] The technical scheme of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0033] In the description of the present application, it should be noted that the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are the directions or positional relationships described based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0034] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0035] The terms used in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.
[0036] It should be understood that, although the terms first, second, third, etc. can be adopted in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon determining" or "in response to determining". In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0037] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.
[0038] Referring to Figure 1 , Figure 1 A schematic diagram of a shutdown fault control system of an electric dust collector based on acetylene preparation provided in an exemplary embodiment of the utility model is shown, comprising an electric dust collector 1 and a PLC electric control cabinet 2;
[0039] As Figure 2 shown, the feed end 101 of the electric dust collector 1 is connected with an external gas-liquid separation scrubber 3, the gas outlet end 102 of the electric dust collector 1 is arranged at the top, and a pressure sensor 103 is arranged inside the electric dust collector 1;
[0040] The PLC electric control cabinet 2 comprises a cabinet body 201 and a PLC controller 202 arranged in the cabinet body, the front of the cabinet body 201 is provided with a cabinet door 20101 and an emergency shutdown button 20102, and a cabinet door opening and closing detector 2010101 is further arranged on the cabinet door 20101;
[0041] As Figure 3 shown, the shutdown signal input end of the PLC controller 202 is connected with the pressure signal of the pressure sensor 102, the cabinet door opening and closing signal of the cabinet door opening and closing detector 2010101 and the emergency shutdown signal of the emergency shutdown button 20102 respectively, and the control signal output end of the PLC controller 202 outputs a control signal to the electric dust collector 1.
[0042] Specifically, the electric dust collector 1 performs electric dust collection on the gas-liquid separation scrubber input gas, discharges substances containing carbon black, etc., and obtains acetylene. In the present exemplary embodiment, the shutdown failure control right of the electric dust collector 1 is given to the PLC controller 202 in the PLC electric control cabinet 2, wherein the PLC controller 202 can comprehensively consider multiple factors of the shutdown failure, thereby performing corresponding shutdown control, specifically: the shutdown signal input end of the PLC controller 202 is connected to the pressure signal of the pressure sensor 103, the cabinet door opening and closing signal of the cabinet door opening and closing detector 2010101, and the emergency shutdown signal of the emergency shutdown button 20102, that is, the PLC controller 202 can comprehensively control the start and stop of the electric dust collector 1 through three shutdown failure modes of pressure detection, cabinet door opening and closing detection, and emergency shutdown.
[0043] Therefore, in the present exemplary embodiment, the PLC controller 202 is adopted for control, which has the advantages of improving the accuracy of fault detection, the PLC controller 202 has powerful fault diagnosis function, can monitor the running state of each component of the electric dust collector 1 in real time, through the PLC controller 202, the key parameters of the electric dust collector 1 including the pressure can be accurately detected, once the abnormality or failure sign is found, the PLC controller 202 can immediately issue an alarm signal and display the fault information. At the same time, the maintenance cost can be reduced: on the one hand, the PLC controller 202 can monitor the running state of the equipment in real time, find and handle potential problems in time, so as to avoid equipment downtime maintenance due to failure; on the other hand, the PLC controller 202 can realize automatic operation, reduce the possibility of manual intervention and misoperation, thereby reducing the equipment failure rate caused by human factors.
[0044] The following will illustrate the preferred scheme:
[0045] More preferably, in an exemplary embodiment, as shown in Figure 2 The electric dust collector 1 is further provided with a corona device 104 and a cleaning device 105 for cleaning the corona device 104, and the control signal output end of the PLC controller 202 outputs control signals to the corona device 104 and the cleaning device 105, respectively.
[0046] The waste liquid outlet 106 of the electric dust collector 1 is arranged at the bottom.
[0047] Specifically, in the present exemplary embodiment, the electric dust collector 1 adopts a wet type electric dust collector, inside which a corona device 104 controlled by a PLC controller 202 is arranged, an electric field is formed by applying a pulse voltage to the corona device 104, and dust is removed under the action of the electric field force; meanwhile, inside the electric dust collector 1, a cleaning device 105 controlled by the PLC controller 202 is arranged, which is used to clean the corona device 104, and waste liquid is recycled through a waste liquid outlet 106 arranged at the bottom of the electric dust collector 1.
[0048] More preferably, in an exemplary embodiment, as shown in Figure 2 The corona device 104 includes a first mounting frame 10401, a corona wire 10402 and a conductive tube 10403 arranged on the first mounting frame 10401, the first mounting frame 10401 is arranged on the inner wall of the electric dust collector 1, as shown in Figure 4 The corona wire 10402 and the conductive tube 10403 are both electrically connected to a high-voltage power supply 10405 through a relay 10404;
[0049] The control signal output end of the PLC controller 202 outputs a control signal to the relay 10404.
[0050] Specifically, in the present exemplary embodiment, the specific implementation of the corona device 104 is disclosed, that is, the corona wire 10402 and the conductive tube 10403 arranged on the first mounting frame 10401, and in a specific exemplary embodiment, the corona wire 10402 acts as a cathode, and the conductive tube 10403 acts as an anode, generating a high-voltage electric field under the action of the high-voltage power supply 10405. Among them, the relay 10404 is used to control the conduction and closing of the high-voltage power supply 10405, specifically, the control signal output end of the PLC controller 202 outputs a control signal to the relay 10404.
[0051] More preferably, in an exemplary embodiment, as shown in Figure 2 The cleaning device 105 includes a second mounting frame 10501 and a cleaning water pipe 10502 arranged on the second mounting frame 10501, the second mounting frame 10501 is arranged on the inner wall of the electric dust collector 1 and above the first mounting frame 10401, and the cleaning water pipe 10502 is provided with a water outlet;
[0052] As shown in Figure 5 The water inlet of the cleaning water pipe 10502 is also provided with a solenoid valve 10503, and the control signal output end of the PLC controller 202 outputs a control signal to the solenoid valve 10503.
[0053] Specifically, in the present exemplary embodiment, a specific implementation of the cleaning device 105 is disclosed, which is realized by a cleaning water pipe 10502 arranged on the second mounting frame 10501, and the cleaning water pipe outputs a control signal to the electromagnetic valve 10504 through the control signal output end of the PLC controller 202.
[0054] More preferably, in an exemplary embodiment, as shown in Figure 6 The shutdown signal input end of the PLC controller 202 is also connected to the DCS remote shutdown signal and the process interlock shutdown signal.
[0055] Specifically, in the present exemplary embodiment, more external control signals of the PLC controller 202 are disclosed, such as the remote shutdown signal and the process interlock shutdown signal.
[0056] More preferably, in an exemplary embodiment, as shown in Figure 6 The front of the cabinet 201 is also provided with a shutdown reason display lamp 20103, and the shutdown display output end of the PLC controller 202 is connected to the shutdown reason display lamp 20103.
[0057] Specifically, in the present exemplary embodiment, the shutdown reason display lamp 20103 is used for light alarm in sound and light alarm, and a sound alarm device can also be externally connected subsequently.
[0058] More preferably, in an exemplary embodiment, as shown in Figure 6 The model of the PLC controller 202 is FX3U-80MR-001.
[0059] Specifically, in the present exemplary embodiment, FX3U-80MR-001 is a PLC (Programmable Logic Controller) launched by Mitsubishi Electric, which has rich port resources to meet various industrial automation control needs.
[0060] In the schematic diagram as shown in Figure 6 The emergency shutdown signal is connected to the input point X0 of the PLC controller 202, the overvoltage protection shutdown signal is connected to the input point X1 of the PLC controller 202, the door switch shutdown signal is connected to the input point X2 of the PLC controller 202, the process interlock shutdown signal is connected to the input point X3 of the PLC controller 202, the DCS shutdown signal is connected to the input point X4 of the PLC controller 202, and the output points Y0, Y1, Y2, Y3, Y4 of the five shutdown factors are connected to the corresponding shutdown reason display lamps 20103, i.e. H1, H2, H3, H4, H5. Other output interfaces of the PLC controller 202 are selected from Y5 to Y20 according to actual needs.
[0061] More preferably, in an exemplary embodiment, as shown in Figure 7 The system for acetylene production comprises a cracking reactor 4, a gas-liquid separation scrubber 3 and an electric dust collector 1. The cracking reactor 4 is connected to the feed end of the raw natural gas. The discharge end of the cracking reactor 4 is connected to the gas-liquid separation scrubber 3. The discharge end of the gas-liquid separation scrubber 3 is connected to the electric dust collector 1.
[0062] Specifically, in the present exemplary embodiment, the raw natural gas (mixture) enters the cracking reactor 4 for high-temperature cracking. The byproduct carbon black in the cracking gas is removed after passing through the gas-liquid separation scrubber 3 and the electric dust collector 1.
[0063] More preferably, in an exemplary embodiment, as shown in Figure 7 The discharge end of the electric dust collector 1 is connected to an external cracking gas tank 5. The cracking gas tank 5 is used to store the cracking gas product.
[0064] Obviously, the above-mentioned embodiments are only examples for the purpose of clarity, and are not intended to limit the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to exhaust all the embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.
Claims
1. An acetylene-based preparation of an electrical precipitator shutdown fault control system characterized by: The system comprises an electric dust collector and a PLC electric control cabinet. The feeding end of the electric dust collector is connected with an external gas-liquid separation scrubber, the gas outlet end of the electric dust collector is arranged at the top, and a pressure sensor is arranged in the electric dust collector. The PLC electric control cabinet comprises a cabinet body and a PLC controller arranged in the cabinet body, the front of the cabinet body is provided with a cabinet door and an emergency stop button, and a cabinet door opening and closing detector is further arranged on the cabinet door. The stop signal input end of the PLC controller is connected with the pressure signal of the pressure sensor, the cabinet door opening and closing signal of the cabinet door opening and closing detector and the emergency stop signal of the emergency stop button, and the control signal output end of the PLC controller outputs a control signal to the electric dust collector.
2. The acetylene-based electrical precipitator shutdown fault control system of claim 1, wherein: The electric dust collector is further provided with a corona device and a cleaning device for cleaning the corona device, and the control signal output end of the PLC controller outputs control signals to the corona device and the cleaning device respectively. The waste liquid outlet end of the electric dust collector is arranged at the bottom.
3. The acetylene-based electrical precipitator shutdown fault control system of claim 2, wherein: The corona device comprises a first mounting frame, a corona wire and a conductive pipe arranged on the first mounting frame, the first mounting frame is arranged on the inner wall of the electric dust collector, and the corona wire and the conductive pipe are electrically connected with a high-voltage power supply through a relay. The control signal output end of the PLC controller outputs a control signal to the relay.
4. The acetylene-based system for shutdown fault control of an electric precipitator according to claim 3, characterized in that: The cleaning device comprises a second mounting frame and a cleaning water pipe arranged on the second mounting frame, the second mounting frame is arranged on the inner wall of the electric dust collector and above the first mounting frame, and a water spraying port is arranged on the cleaning water pipe. The water inlet of the cleaning water pipe is further provided with a solenoid valve, and the control signal output end of the PLC controller outputs a control signal to the solenoid valve.
5. The acetylene-based system for shutdown fault control of an electric precipitator according to claim 1, characterized in that: The stop signal input end of the PLC controller is further connected with a DCS remote stop signal and a process interlocking stop signal.
6. The acetylene-based electrical precipitator shutdown fault control system of claim 1 or 5, wherein: The front of the cabinet body is further provided with a stop reason display lamp, and the stop display output end of the PLC controller is connected with the stop reason display lamp.
7. The acetylene-based electrical precipitator shutdown fault control system of claim 1, wherein: The model of the PLC controller is FX3U-80MR-001.
8. The acetylene-based system for shutdown fault control of an electric precipitator of claim 1, wherein: The system for preparing acetylene comprises a cracking reactor, a gas-liquid separation scrubber and an electric dust collector, the feeding end of the cracking reactor is connected with raw natural gas, the discharge end of the cracking reactor is connected with the gas-liquid separation scrubber, and the discharge end of the gas-liquid separation scrubber is connected with the electric dust collector.
9. An acetylene-based electrical precipitator shutdown fault control system according to claim 8, wherein: The discharge end of the electric dust collector is connected with an external cracking gas gas cabinet.