Novel hot blast stove control system based on MODBUS TCP / IP communication mode

Abstract

The utility model belongs to the technical field of control, and particularly relates to a novel hot blast stove control system based on a MODBUS TCP / IP (Transmission Control Protocol / Internet Protocol) communication mode, which acquires real-time temperature, real-time gas path flow and real-time oil path flow, sets a temperature threshold value, a gas path flow threshold value and an oil path flow threshold value, and regulates and controls a valve control module based on a PID (Proportion Integration Differentiation) calculation result. Therefore, automatic control over the hot-blast stove is achieved, waste of coal gas and oil gas is avoided, safety of the hot-blast stove is improved, in addition, the communication module based on the MODBUS TCP / IP protocol is used for communicating with the remote control module, remote control over the hot-blast stove is achieved, and the accuracy of data transmission is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of control, and particularly relates to a new hot blast stove control system based on the MODBUS TCP / IP communication mode. Background Technique

[0002] The circular economy of low-carbon energy conservation, consumption reduction, cost reduction, scientific and technological innovation, and environmental protection is an urgent requirement for each enterprise. Only by adhering to conservation-oriented development, clean development, and safe development can we achieve sound and rapid economic development. Further strengthening consumption reduction, energy conservation and emission reduction, and full utilization of energy are also urgent needs to address global climate change and are responsibilities we should undertake. Therefore, reducing fuel consumption, enhancing the profitability and market competitiveness of enterprises, and innovating the production process of enterprises technically have become our unshirkable responsibilities.

[0003] The hot blast stove is an important component of blast furnace ironmaking equipment. In recent years, although hot blast stove technology has been continuously developing, most domestic hot blast stoves are manually controlled during the combustion stage. The control process of the hot blast stove is affected by many external environments and internal factors. Currently, the heating control of the hot blast stove is mostly manual and artificial. Manual operation wastes gas. Due to the large randomness of manual operation, the adjustment of gas flow and oil flow is not timely, resulting in incomplete combustion, too low or too high temperature, and poor safety. Due to unreasonable operation, deflagration often occurs, damaging the hot blast stove masonry. Summary of the Invention

[0004] In order to solve the technical problems existing in the above background technique, the utility model provides a new hot blast stove control system based on the MODBUS TCP / IP communication mode, aiming to improve work efficiency.

[0005] The specific steps of the utility model are as follows:

[0006] In order to achieve the above technical solution, the utility model provides a new hot blast stove control system based on the MODBUS TCP / IP communication mode, including: a central controller, a communication module, a detection module, a valve control module, and a remote control module;

[0007] The detection module is connected to the central controller through a data processing module, and is used to send the detection data detected by the detection module to the central controller after data processing through the data processing module;

[0008] The central controller is connected to the remote control module through a communication module that communicates based on the MODBUS TCP / IP protocol, and is used to send detection data to the remote control module and receive the data set through the remote control module;

[0009] The central controller is connected to the valve control module to regulate the opening degree of the valve control module.

[0010] Further, the detection module includes: a temperature sensor, an oil circuit flow sensor, and a gas circuit flow sensor.

[0011] Further, the central controller includes a CPU control unit, and the CPU control unit is connected with a temperature PID control unit, an oil circuit flow PID control unit, and a gas circuit flow PID control unit.

[0012] Further, the valve control module includes a temperature control unit, an oil circuit flow control unit, and a gas circuit flow control unit.

[0013] Further, a safety protection module and an alarm module are further included;

[0014] Both the safety protection module and the alarm module are connected to the central controller.

[0015] Further, the central controller adopts a PLC controller.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) By collecting real-time temperature, real-time gas circuit flow, and real-time oil circuit flow, as well as setting temperature thresholds, gas circuit flow thresholds, and oil circuit flow thresholds, and regulating the valve control module based on the results of PID calculation, the automatic control of the hot blast stove is realized, avoiding the waste of gas and oil, and helping to improve the safety of the hot blast stove.

[0018] (2) By using the communication module based on the MODBUS TCP / IP protocol to communicate with the remote control module, it not only helps to realize the remote control of the hot blast stove but also helps to ensure the accuracy of data transmission.

[0019] The advantages of the additional aspects of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specification drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] Figure 1 It is an electrical principle schematic diagram of an embodiment of a new type of hot blast stove control system based on the MODBUS TCP / IP communication mode of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present utility model. Unless otherwise specified, each technical and scientific term used in this embodiment has the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] In the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only relationship terms determined for the convenience of describing the structural relationship of each component or element of the present utility model, and do not specifically refer to any component or element in the present utility model, and should not be construed as a limitation to the present utility model.

[0026] In the present utility model, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be a fixed connection, an integral connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in relevant scientific research or maintenance in this field, the specific meanings of the above terms in the present utility model can be determined according to specific circumstances, and should not be construed as a limitation to the present utility model.

[0027] Embodiment 1:

[0028] As Figure 1 shown, this embodiment provides a new hot blast stove control system based on the MODBUS TCP / IP communication mode, including: a central controller 1, a communication module 6, a detection module 3, a valve control module 2, and a remote control module 7.

[0029] The detection module 3 includes a temperature sensor 3-1 for detecting the real-time temperature at the air outlet of the hot blast stove, an oil flow sensor 3-2 for detecting the real-time oil flow in the oil supply pipeline, and an air flow data sensor 3-3 for detecting the air flow in the air supply pipeline. The valve control module 2 includes a temperature valve control unit 2-1, an oil circuit valve control unit 2-2, and an air circuit valve control unit 2-3.

[0030] The central processing unit 1 includes a CPU control unit 1-1, and the CPU control unit 1-1 is connected to a temperature PID control unit 1-2, an oil circuit flow PID control unit 1-3, and an air circuit flow PID control unit 1-4.

[0031] A temperature sensor 3-1, an oil circuit flow sensor 3-2, and an air circuit flow sensor 3-3 are connected to the CPU control unit 1-1 of the central processing unit 1 to send the detected real-time temperature data, real-time oil circuit flow data, and real-time air circuit flow data to the CPU control unit 1-1 of the central processing unit 1.

[0032] The CPU control unit is also connected to a communication module 6 that communicates with a remote control module 7 based on the MODBUS TCP / IP protocol. The remote control module 7 is used to display the real-time data detected by the detection module 3 (such as real-time temperature data, real-time oil circuit flow data, and real-time air circuit flow data, etc.) and set system parameter data (such as temperature threshold, oil circuit flow threshold, and air circuit flow threshold, etc.). Communication through the MODBUS TCP / IP protocol ensures the accuracy of data transmission.

[0033] The temperature PID control unit 1-2 is connected to a temperature valve control unit 2-1 to regulate the opening degree of the temperature valve control unit.

[0034] The air circuit flow PID control unit 1-4 is connected to an air circuit flow valve control unit 2-3 to regulate the opening degree of the air circuit flow valve control unit.

[0035] The oil circuit flow PID control unit 1-3 is connected to an oil circuit flow valve control unit 2-3 to regulate the opening degree of the oil circuit flow valve control unit.

[0036] Specifically, the CPU control unit 1-1 controls the temperature PID control unit 1-2 to perform PID calculation based on the set temperature threshold and real-time temperature data, so as to regulate the opening degree of the temperature valve control unit based on the calculation result. The CPU control unit 1-1 controls the air circuit flow PID control unit 1-4 to perform PID calculation based on the set air circuit flow threshold and real-time air circuit flow data, so as to regulate the opening degree of the air circuit flow valve control unit 2-3 based on the calculation result. And the CPU control unit 1-1 controls the oil circuit flow PID control unit 1-3 to perform PID calculation based on the set oil circuit flow threshold and real-time oil circuit flow data, so as to regulate the opening degree of the oil circuit flow valve control unit 2-3 based on the calculation result. Thus, the automatic control of the hot blast stove is realized, the rationality of the ratio is improved, the waste of gas and oil is avoided, and it helps to improve the safety of the hot blast stove.

[0037] Furthermore, the CPU control unit 1-1 is also connected to a safety protection module 4 and an alarm module 5, which are used to control the safety protection module 4 to close the hot blast stove and alarm through the alarm module 5 when one of the real-time temperature data, real-time oil circuit flow data, and real-time gas circuit flow data detected by the detection module still exceeds the corresponding preset threshold within a preset time period. For example, the preset time period is 5 minutes, and the preset temperature threshold is 50 °C. If the detected real-time temperature data is continuously greater than 50 °C within five minutes, it indicates that the opening degree of the temperature flow valve control unit controlled by the temperature PID control module cannot meet the requirements. Then, the safety protection module closes the hot blast stove and alarms through the alarm module to avoid damage to the hot blast stove.

[0038] It should be noted that control instructions can also be sent to the control system through the remote control module. For example, controlling the stop and start of the hot air blower, etc.

[0039] When the utility model is in use, first, the temperature threshold, oil circuit flow threshold, gas circuit flow threshold, and time period are set through the remote controller. The temperature sensor detects the real-time temperature at the air outlet of the hot blast stove, the oil circuit flow sensor detects the real-time oil circuit flow in the oil supply pipeline, and the gas circuit flow sensor detects the real-time gas circuit flow in the gas supply pipeline, and sends the detected real-time temperature data, real-time oil circuit flow data, and real-time gas circuit flow data to the central controller. The central controller performs PID calculation based on the set temperature threshold, oil circuit flow threshold, gas circuit flow threshold, and the obtained real-time temperature data, real-time oil circuit flow data, and real-time gas circuit flow data, and adjusts the opening degree of the valve control module based on the calculation result, thereby realizing the automatic control of the hot blast stove, improving the rationality of the ratio, avoiding the waste of gas and oil, and helping to improve the safety of the hot blast stove.

[0040] In addition, when any one of the real-time temperature data, real-time oil circuit flow data, and real-time gas circuit flow data obtained by the central controller within the set time period exceeds the preset temperature threshold, oil circuit flow threshold, and gas circuit flow threshold, the central controller controls the safety protection module to close the hot blast stove and alarms through the alarm, which helps to avoid damage to the hot blast stove and further improves safety.

[0041] Furthermore, the central controller can adopt a PLC controller.

[0042] In this embodiment, by collecting the real-time temperature, real-time gas path flow rate, and real-time oil path flow rate, and setting the temperature threshold, gas path flow rate threshold, and oil path flow rate threshold, the valve control module is regulated based on the result of PID calculation, so as to realize the automatic control of the hot blast stove, avoid the waste of gas and oil, and help improve the safety of the hot blast stove. Moreover, by using the communication module based on the MODBUS TCP / IP protocol to communicate with the remote control module, it not only helps to realize the remote control of the hot blast stove but also helps to ensure the accuracy of data transmission.

[0043] For the same or similar parts among the various embodiments in this specification, reference can be made to each other. In particular, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

[0044] The unit described as a separated component may or may not be physically separated, and the component shown as a unit may or may not be a physical unit, that is, it may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0045] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A new hot air furnace control system based on MODBUS TCP / IP communication mode, characterized in that: include: Central controller, communication module, detection module, valve control module and remote control module; The detection module is connected to the central controller via the data processing module, and is used to process the detection data detected by the detection module via the data processing module and then send it to the central controller; The central controller is connected to the remote control module via a communication module based on the MODBUS TCP / IP protocol, and is used to send detection data to the remote control module and receive data set by the remote control module; The central controller is connected to the valve control module to adjust the opening of the valve control module.

2. The novel hot blast stove control system based on MODBUS TCP / IP communication mode according to claim 1 is characterized in that: The detection module includes: a temperature sensor, an oil flow sensor and a gas flow sensor.

3. The novel hot blast stove control system based on MODBUS TCP / IP communication mode according to claim 2 is characterized in that: The central controller comprises a CPU control unit, and the CPU control unit is connected to a temperature PID control unit, an oil flow PID control unit and a gas flow PID control unit.

4. The novel hot blast stove control system based on MODBUS TCP / IP communication mode according to claim 3 is characterized in that: The valve control module includes a temperature control unit, an oil flow control unit and a gas flow control unit.

5. The novel hot blast stove control system based on MODBUS TCP / IP communication mode according to claim 1 is characterized in that: The system also includes a safety protection module and an alarm module; The safety protection module and the alarm module are both connected to the central controller.

6. The novel hot blast stove control system based on MODBUS TCP / IP communication mode according to claim 1 is characterized in that: The central controller adopts a PLC controller.

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