Small proportion integration differentiation (PID) temperature control system of coal-based auxiliary binder material tank for sintering and pelletizing

Abstract

The utility model provides a small PID temperature control system of a coal-based auxiliary binder material tank for sintering and pelletizing. The system comprises a PID single-chip microcomputer, a coal-based auxiliary binder tank body, a temperature sensor arranged at the top of the tank body and a temperature measuring heater arranged in the tank body. The PID single chip microcomputer is connected with the temperature sensor and the temperature measuring heater; the temperature sensor is used for monitoring the temperature of the coal-based auxiliary material binder tank body and converting a temperature signal into an analog quantity which can be identified by the PID single chip microcomputer; and the temperature measuring heater is used for adjusting the power of the temperature measuring heater according to the PWM signal output by the PID single chip microcomputer. According to the technical scheme provided by the invention, the equipment can be directly controlled to achieve an expected effect according to a set program without other auxiliary modules. The system has the innovativeness of high applicability, low operation threshold, strong pertinence, high stability, low cost and strong portability.

Description

Technical Field

[0001] This document relates to the field of temperature control technology, and in particular to a small PID temperature control system for a coal-based auxiliary binder material tank for sintering pellets. Background Art

[0002] Coal-based auxiliary material binder is a new type of binder used in sintering pellets. Its material properties are relatively special. It is gel-like at room temperature and liquid when heated to 35°C. Therefore, the material tank of this material needs to have a temperature adjustment function to facilitate material transmission and prevent the coal-based auxiliary material binder from clogging the pipeline. Current industrial automation control systems mostly use modular finished products for customization and organization. Due to the high cost, they are not suitable for simple temperature control. Utility Model Content

[0003] The utility model provides a small PID temperature control system for a coal-based auxiliary material binder tank for sintering pellets, comprising:

[0004] PID single chip microcomputer, coal-based auxiliary material binder tank, temperature sensor arranged on the top of the tank and temperature measuring heater arranged inside the tank;

[0005] The PID single chip microcomputer is connected to the temperature sensor and the temperature measuring heater;

[0006] The temperature sensor is used to monitor the temperature of the coal-based auxiliary material binder tank and convert the temperature signal into an analog value that can be recognized by the PID microcontroller;

[0007] The temperature measuring heater adjusts its own power according to the PWM signal output by the PID microcontroller.

[0008] Furthermore, the PID single chip microcomputer is responsible for receiving the signal input by the temperature sensor, calculating the control quantity through a preset PID algorithm, and then outputting a PWM signal to the temperature measuring heater.

[0009] Furthermore, the temperature measuring heater is a spiral heating tube.

[0010] Furthermore, the temperature sensor is a thermal resistance temperature sensor.

[0011] Furthermore, a thermal insulation layer is provided on the outside of the coal-based auxiliary material binder tank.

[0012] A pressure sensor is further provided inside the coal-based auxiliary material binder tank body for monitoring pressure information inside the coal-based auxiliary material binder tank body.

[0013] A liquid level gauge is further provided inside the coal-based auxiliary material binder tank body for monitoring the liquid level inside the coal-based auxiliary material binder tank body.

[0014] The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes an alarm device for sounding an alarm when the coal-based auxiliary material binder tank body exceeds a preset temperature.

[0015] The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes a display device for displaying the temperature inside the coal-based auxiliary material binder tank in real time.

[0016] The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes: a communication module to realize data exchange between the PID temperature control system and the host computer, thereby realizing remote monitoring and control.

[0017] The present invention utilizes a single-chip microcomputer (MCU) rather than the PLC commonly used in industrial control systems for automated control, a form of auxiliary control. Its modular design offers versatility, low cost, miniaturization, and protection against accidental touches. Compared to traditional PLC-based equipment control, this self-contained system, when applied to temperature control of material tanks, eliminates the need for additional auxiliary modules and can directly control the equipment according to established procedures to achieve the desired effect. This innovative system boasts high applicability, low operational barriers, strong targeting, high stability, low cost, and portability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of a small PID temperature control system for a coal-based auxiliary binder material tank for sintering pellets according to an embodiment of the present invention;

[0020] Figure 2 This is the overall framework diagram of a small PID temperature control system for a coal-based auxiliary binder material tank for sintering pellets according to an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the communication frame format of a small PID temperature control system for a coal-based auxiliary binder material tank for sintering pellets according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this document.

[0023] System Example

[0024] According to the embodiment of the utility model, a small PID temperature control system for a coal-based auxiliary binder material tank for sintering pellets is provided. Figure 1 This is a schematic diagram of a small PID temperature control system for a coal-based auxiliary material binder tank for sintering pellets according to an embodiment of the present invention. Figure 1 As shown, the small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets according to the embodiment of the utility model specifically includes:

[0025] PID single chip microcomputer, coal-based auxiliary material binder tank, temperature sensor arranged on the top of the tank and temperature measuring heater arranged inside the tank;

[0026] The PID single chip microcomputer is connected to the temperature sensor and the temperature measuring heater; the PID single chip microcomputer is responsible for receiving the signal input by the temperature sensor, calculating the control quantity through a preset PID algorithm, and then outputting a PWM signal to the temperature measuring heater.

[0027] The temperature sensor is used to monitor the temperature of the coal-based auxiliary material binder tank and convert the temperature signal into an analog quantity that can be recognized by the PID microcontroller; the temperature sensor in the embodiment of the utility model adopts a thermal resistance temperature sensor.

[0028] The temperature measuring heater adjusts its own power according to the PWM signal output by the PID single chip microcomputer. The temperature measuring heater is a spiral heating tube.

[0029] The coal-based auxiliary material binder tank is provided with a heat-insulating layer on the outside.

[0030] A pressure sensor is further provided inside the coal-based auxiliary material binder tank body for monitoring pressure information inside the coal-based auxiliary material binder tank body.

[0031] A liquid level gauge is further provided inside the coal-based auxiliary material binder tank body for monitoring the liquid level inside the coal-based auxiliary material binder tank body.

[0032] The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes an alarm device for sounding an alarm when the coal-based auxiliary material binder tank body exceeds a preset temperature.

[0033] The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes a display device for displaying the temperature inside the coal-based auxiliary material binder tank in real time.

[0034] The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes: a communication module to realize data exchange between the PID temperature control system and the host computer, thereby realizing remote monitoring and control.

[0035] The embodiment of the utility model adopts modular design, which makes it low-cost and universal, and is applicable to most DC working equipment. Temperature control can be achieved by connecting the heating element to the control end, such as Figure 2 Shown is the overall framework diagram of a small PID temperature control system for a coal-based auxiliary binder material tank for sintering pellets according to an embodiment of the utility model.

[0036] The temperature sensor limits its output to the 0-5V analog input of the microcontroller's PID module. The output PWM duty cycle is calculated using parameters preset by the developer. The output module then adjusts the output voltage (between 0 and the device's operating voltage) based on the duty cycle, controlling the power of the temperature-sensing heater and achieving automatic control of the heater. The heater adjusts its power based on the PWM signal output by the PID microcontroller.

[0037] The PID algorithm inside the microcontroller makes the output continuously approach the target value of the control quantity, and provides PID coefficients, automatic shutdown, output upper and lower limits, and setting parameters for designers to use according to practical needs. During the process implementation, the heating slope is easy to control but the cooling slope is difficult to control, and it has a more obvious time delay characteristic, which causes large temperature fluctuations and is difficult to accurately control. To address this problem, the appropriate PID parameters can be determined through experiments to achieve precise control of the temperature.

[0038] The above settings can meet the customization requirements of the coal-based auxiliary material binder PID temperature control system without relying on PLC. In terms of program packaging, designers can use specific host computer software to set parameters through the serial port of the controller to prevent operators from modifying the parameters. At the same time, the program adopts a two-layer operation monitoring mechanism. If the program crashes unexpectedly, it can automatically recover and record alarm data, thereby improving the stability of equipment operation and reducing the difficulty of operation and maintenance.

[0039] The controller module has a built-in linear regulator to distribute the operating voltage of each component, so it has the characteristics of wide voltage input. When in use, you only need to connect the device in series in the circuit without the need for extra wiring. It is compact and easy to embed into the temperature control system.

[0040] The module built-in parameters are modified through a specific communication format to prevent abnormal setting data. The communication frame format is as follows: Figure 3 shown.

[0041] Among them, FE8F is the communication start identification frame. The mainboard detects this frame when it is powered on. If it is not detected, the control program starts to run. When the FE8F frame is detected, the data register is specified through the 16-bit address frame, and the data is checked through the CRC-8 check frame to see if it is complete. The control data is written only after the check passes. The same applies to the 8-bit data frame. The last 8FFE frame is the communication termination frame. When this frame is detected, the mainboard immediately ends the communication and runs the control program normally.

[0042] The present invention utilizes a single-chip microcomputer (MCU) rather than the PLC commonly used in industrial control systems for automated control, a form of auxiliary control. Its modular design offers versatility, low cost, miniaturization, and protection against accidental touches. Compared to traditional PLC-based equipment control, this self-contained system, when applied to temperature control of material tanks, eliminates the need for additional auxiliary modules and can directly control the equipment according to established procedures to achieve the desired effect. This innovative system boasts high applicability, low operational barriers, strong targeting, high stability, low cost, and portability.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A small PID temperature control system for a coal-based auxiliary binder material tank for sintering pellets, characterized in that include: PID single chip microcomputer, coal-based auxiliary material binder tank, temperature sensor arranged on the top of the tank and temperature measuring heater arranged inside the tank; The PID single chip microcomputer is connected to the temperature sensor and the temperature measuring heater; The temperature sensor is used to monitor the temperature of the coal-based auxiliary material binder tank and convert the temperature signal into an analog value that can be recognized by the PID microcontroller; The temperature measuring heater adjusts its own power according to the PWM signal output by the PID microcontroller.

2. The system according to claim 1, wherein: The PID single chip microcomputer is responsible for receiving the signal input by the temperature sensor, calculating the control quantity through a preset PID algorithm, and then outputting a PWM signal to the temperature measuring heater.

3. The system according to claim 1, wherein: The temperature measuring heater is a spiral heating tube.

4. The system according to claim 1, wherein: The temperature sensor is a thermal resistance temperature sensor.

5. The system according to claim 1, wherein: The coal-based auxiliary material binder tank is provided with a heat-insulating layer on the outside.

6. The system according to claim 1, wherein: A pressure sensor is further provided inside the coal-based auxiliary material binder tank body for monitoring pressure information inside the coal-based auxiliary material binder tank body.

7. The system according to claim 1, wherein: A liquid level gauge is further provided inside the coal-based auxiliary material binder tank body for monitoring the liquid level inside the coal-based auxiliary material binder tank body.

8. The system according to claim 1, wherein: The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes an alarm device for sounding an alarm when the coal-based auxiliary material binder tank body exceeds a preset temperature.

9. The system according to claim 1, wherein: The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes a display device for displaying the temperature inside the coal-based auxiliary material binder tank in real time.

10. The system according to claim 1, wherein: The small PID temperature control system for the coal-based auxiliary material binder tank for sintering pellets further includes: a communication module to realize data exchange between the PID temperature control system and the host computer, thereby realizing remote monitoring and control.

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