A dust cleaning control system based on compartment terminals

Abstract

The invention discloses a dust cleaning control system based on a chamber terminal. One chamber terminal control system corresponds to one chamber spraying solenoid valve group. Each chamber terminal control system comprises a chamber terminal control module and a chamber terminal communication module. A DCS controller is connected with the chamber terminal control modules in each chamber terminal control system via a signal input module and a signal output module. The chamber terminal control module is connected with the corresponding chamber spraying solenoid valve group. The chamber terminal control module is connected with the chamber terminal communication module. The DCS controller is connected with the chamber terminal communication modules in each chamber terminal control system via a DCS Modbus communication module. The fault-tolerant control module is connected with the DCS controller and the DCS Modbus communication module. The system can meet the requirements of a dust cleaning control method for a large bag dust collector.

Description

Technical Field

[0001] The invention relates to a control system, in particular to a dust cleaning control system based on a compartment terminal. Background Art

[0002] As my country's environmental protection standards become increasingly stringent, bag dust collectors have good dust removal effects, especially excellent fine dust collection effects, so bag dust removal technology has been widely used in various industries. Pulse jet cleaning is a common cleaning method in bag dust removal technology. Large bag dust collectors are divided into left and right sides and multiple chambers. Each chamber has multiple jet solenoid valves. The purpose of bag dust cleaning is achieved by controlling the jet solenoid valves of each chamber. However, the existing technology does not provide a related control architecture, which cannot meet the requirements of large bag dust collector cleaning control methods. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a dust cleaning control system based on a chamber terminal, which can meet the requirements of the dust cleaning control method of a large bag filter.

[0004] To achieve the above-mentioned purpose, the dust cleaning control system based on the sub-chamber terminal of the present invention includes a DCS controller, a DCS Modbus communication module, a signal input module, a signal output module, a fault-tolerant control module, a plurality of sub-chamber terminal control systems and a plurality of sub-chamber spraying solenoid valve groups;

[0005] One sub-chamber terminal control system corresponds to one sub-chamber blowing solenoid valve group, each sub-chamber terminal control system includes a sub-chamber terminal control module and a sub-chamber terminal communication module, the DCS controller is connected to the sub-chamber terminal control module in each sub-chamber terminal control system via a signal input module and a signal output module, the sub-chamber terminal control module is connected to the corresponding sub-chamber blowing solenoid valve group, and the sub-chamber terminal control module is connected to the sub-chamber terminal communication module;

[0006] The DCS controller is connected with the sub-room terminal communication module in each sub-room terminal control system through the DCS Modbus communication module, and the fault-tolerant control module is connected with the DCS controller and the DCS Modbus communication module.

[0007] The DCS controller and the signal input module and the signal output module, each DCS controller and the signal input module and the signal output module, and the compartment terminal control system and the corresponding compartment spray solenoid valve group are all connected through control cables.

[0008] The DCS Modbus communication module is connected to the DCS controller, the fault-tolerant control module and the branch terminal communication module through communication cables.

[0009] Each branch terminal control system relies on the branch terminal communication module and the DCS Modbus communication module to be connected through a communication cable. Based on the communication protocol, address, and report, the DCS controller monitors and adjusts the parameters in each branch terminal control system.

[0010] The parameters to be adjusted include the interval time of the spraying electromagnetic valve, the cycle time, and the program control and interval time of the terminal control system of each chamber.

[0011] The communication protocol is selected from Modbus communication protocol, DP communication protocol or PROFIBUS communication protocol.

[0012] When the fault-tolerant control module detects a communication failure, the terminal control systems of each sub-room switch to local operation, and each terminal control module of each sub-room retains the last parameter setting until communication returns to normal.

[0013] The DCS controller adjusts the start and stop sequence and time interval of each sub-room terminal control system according to working conditions.

[0014] The present invention has the following beneficial effects:

[0015] During the specific operation of the cleaning control system based on the chamber terminal described in the present invention, the DCS controller is connected to the spray solenoid valve group of each chamber through the control system of each chamber terminal, and the parameters in the control module of each chamber terminal are adjusted and monitored on the DCS controller, and the switching time, state, cycle time between the spray solenoid valves of each chamber and the operating procedures and time between the control modules of each chamber terminal are adjusted. The communication between the DCS controller and the control modules of each chamber terminal is monitored through the fault-tolerant module to facilitate the operation personnel to track and adjust in time, so as to meet the requirements of the cleaning control method of large bag dust collectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Among them, 1 is a DCS controller, 2 is a DCS Modbus communication module, 3 is a signal input module, 4 is a signal output module, 5 is a fault-tolerant control module, 6 is a sub-chamber terminal control module, 7 is a sub-chamber terminal communication module, 8 is a sub-chamber spray solenoid valve group, 9 is a control cable, and 10 is a communication cable. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all embodiments, and is not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concepts disclosed in the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0019] The accompanying drawings show schematic diagrams of structures according to embodiments disclosed in the present invention. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0020] refer to Figure 1 The dust cleaning control system based on the chamber terminal of the present invention comprises a DCS controller 1, a DCSModbus communication module 2, a signal input module 3, a signal output module 4, a fault-tolerant control module 5, a plurality of chamber terminal control systems and a plurality of chamber spraying solenoid valve groups 8;

[0021] One sub-chamber terminal control system corresponds to one sub-chamber blowing solenoid valve group 8, and the sub-chamber terminal control system includes a sub-chamber terminal control module 6 and a sub-chamber terminal communication module 7. The DCS controller 1 is connected to the sub-chamber terminal control module 6 in each sub-chamber terminal control system via a signal input module 3 and a signal output module 4. The sub-chamber terminal control module 6 is connected to the corresponding sub-chamber blowing solenoid valve group 8, and the sub-chamber terminal control module 6 is connected to the sub-chamber terminal communication module 7;

[0022] The DCS controller 1 is connected to the sub-room terminal communication module 7 in each sub-room terminal control system through the DCS Modbus communication module 2, and the fault-tolerant control module 5 is connected to the DCS controller 1 and the DCS Modbus communication module 2;

[0023] Among them, the DCS controller 1 and the signal input module 3 and the signal output module 4, each DCS controller 1 and the signal input module 3 and the signal output module 4, and the sub-chamber terminal control system and the corresponding sub-chamber spray solenoid valve group 8 are all connected through a control cable 9;

[0024] The DCS Modbus communication module 2 is connected to the DCS controller 1 , the fault-tolerant control module 5 and the sub-room terminal communication module 7 via a communication cable 10 .

[0025] The specific working process of the present invention is:

[0026] Each sub-chamber terminal control system relies on the sub-chamber terminal communication module 7 to be connected with the DCS Modbus communication module 2 through a communication cable 10. According to the communication protocol, address, and report, the DCS controller 1 monitors and adjusts the parameters in each sub-chamber terminal control system. The adjustment parameters include the interval time of the spray solenoid valve, the cycle time, and the program control and interval time of each sub-chamber terminal control system. The communication protocol selects Modbus communication protocol, DP communication protocol, or PROFIBUS communication protocol.

[0027] Through redundant communication, communication verification and fault tolerance measures, the communication between the DCS controller 1 and each sub-chamber terminal control system is monitored to see if it is normal, and the operation of the dust cleaning control system is affected by communication failures. Each sub-chamber terminal control system has local and remote functions. When the fault-tolerant control module 5 detects a communication failure, the sub-chamber terminal control system switches to local operation, and each sub-chamber terminal control module 6 retains the last parameter setting until the communication returns to normal.

[0028] The sub-chamber terminal control module 6 is connected to the signal input module 3 and the signal output module 4 through a control cable, and is used for start-stop control and status monitoring of the sub-chamber terminal control system to ensure the safety of important instructions and status. Each sub-chamber terminal control module 6 is connected to the corresponding sub-chamber blowing solenoid valve group 8 through a control cable to realize the control of each sub-chamber blowing solenoid valve group 8.

[0029] The terminal control system of each sub-chamber adjusts the start-stop sequence and time interval in the DCS controller 1 according to the working conditions, and makes timely adjustments according to the operating results, and finally realizes the purpose of automatic dust cleaning by controlling the injection solenoid valve group 8 of each sub-chamber.

[0030] In addition, it should be noted that the compartment terminal control module 6 in the present invention is similar to the existing pulse controller, and the functions are expanded and improved on this basis, and it has the functions of redundant communication and intelligent status monitoring. The focus of the present invention is to propose a control system for pulse cleaning of large bag dust collectors, and use the control systems of each compartment terminal to realize the control of pulse cleaning of large bag dust collectors.

Claims

1. A dust cleaning control system based on compartment terminals, characterized in that: It comprises a DCS controller (1), a DCS Modbus communication module (2), a signal input module (3), a signal output module (4), a fault-tolerant control module (5), a plurality of compartment terminal control systems and a plurality of compartment spraying electromagnetic valve groups (8); One sub-chamber terminal control system corresponds to one sub-chamber blowing solenoid valve group (8), each sub-chamber terminal control system comprises a sub-chamber terminal control module (6) and a sub-chamber terminal communication module (7), a DCS controller (1) is connected to the sub-chamber terminal control module (6) in each sub-chamber terminal control system via a signal input module (3) and a signal output module (4), the sub-chamber terminal control module (6) is connected to the corresponding sub-chamber blowing solenoid valve group (8), and the sub-chamber terminal control module (6) is connected to the sub-chamber terminal communication module (7); The DCS controller (1) is connected to the sub-room terminal communication module (7) in each sub-room terminal control system via the DCS Modbus communication module (2), and the fault-tolerant control module (5) is connected to the DCS controller (1) and the DCS Modbus communication module (2); The DCS controller (1) and the signal input module (3) and the signal output module (4), each DCS controller (1) and the signal input module (3) and the signal output module (4), and the compartment terminal control system and the corresponding compartment spraying electromagnetic valve group (8) are all connected via control cables (9); The DCS Modbus communication module (2) is connected to the DCS controller (1), the fault-tolerant control module (5) and the sub-room terminal communication module (7) via a communication cable (10); Each sub-room terminal control system relies on the sub-room terminal communication module (7) to be connected with the DCS Modbus communication module (2) via a communication cable (10), and the DCS controller (1) monitors and adjusts the parameters in each sub-room terminal control system according to the communication protocol, address and report.

2. The dust cleaning control system based on compartment terminals according to claim 1 is characterized in that: The parameters to be adjusted include the interval time of the spraying electromagnetic valve, the cycle time, and the program control and interval time of the terminal control system of each chamber.

3. The dust cleaning control system based on compartment terminals according to claim 1 is characterized in that: The communication protocol is selected from Modbus communication protocol, DP communication protocol or PROFIBUS communication protocol.

4. The dust cleaning control system based on compartment terminals according to claim 1 is characterized in that: When the fault-tolerant control module (5) detects a communication failure, each branch terminal control system switches to local operation, and each branch terminal control module (6) retains the last parameter setting until communication returns to normal.

5. The dust cleaning control system based on compartment terminals according to claim 1 is characterized in that: The DCS controller (1) adjusts the start and stop sequence and time interval of each sub-room terminal control system according to working conditions.

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