Method for adjusting electric power of electromagnetic induction heating device along with environment temperature
By setting the temperature measurement point in the electromagnetic induction heating device and establishing the relationship between the ambient temperature and the target temperature of the outlet strip steel, and automatically adjusting the electrical power, the problems of high power consumption and short equipment life of the electromagnetic induction heating device when the ambient temperature changes are solved, and the problem of high power consumption and short equipment life of the electromagnetic induction heating device is realized. Energy-saving regulation of electrical power and long-term use of equipment.
Patent Information
- Application Number
- CN202411440245.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2024-12-20
AI Technical Summary
In the steel rolling production, existing electromagnetic induction heating devices have problems such as high randomness in the setting of the outlet target temperature, high power consumption and short equipment life, especially in the event of ambient temperature changes, the heating parameters cannot be effectively adjusted.
By setting temperature measurement points, measuring ambient temperature using a temperature sensor, and establishing the relationship between the target temperature and ambient temperature of the outlet strip steel according to actual working conditions, automatically adjusting the electrical power of the electromagnetic induction heating device to achieve energy-saving adjustment of the electrical power with the ambient temperature. .
The automatic adjustment of the outlet strip temperature of the electromagnetic induction heating device is achieved, reducing interference from human factors, reducing energy consumption, extending the service life of the equipment, improving the efficiency of rolling materials and reducing production costs.
Smart Images
Figure CN119172881A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of steel rolling preheating control, and relates to electric power regulation of an electromagnetic induction heating device, in particular to a method for regulating the electric power of an electromagnetic induction heating device according to ambient temperature. Background Art
[0002] In the steel rolling production process, in order to improve the toughness and ductility of the strip and avoid strip breakage during the rolling process, electromagnetic induction heating devices are usually used to increase the temperature of the strip to improve the strip steel coil yield and rolling mill stability. At present, the power of each electromagnetic induction heating device is 2000kw. The main problems associated with the high power of electromagnetic induction heating devices are: The target temperature setting of the outlet is very arbitrary: the target temperature setting of the electromagnetic induction heating outlet is currently set manually, and there are problems of human factors such as failure to adjust in time according to actual needs or inconsistent settings for each shift.
[0003] High power consumption: Under the requirement of ensuring the rolling yield rate, no technical reform research was conducted from the aspect of energy saving. For example, when the ambient temperature changes greatly in spring, summer, autumn and winter, and during the day and night, the induction heating parameters were not adjusted accordingly according to the on-site temperature.
[0004] Impact on equipment life: When the set value of the outlet temperature of the electromagnetic induction heating device is too high, the current and power used are too large. Long-term high-load operation not only wastes electrical energy, but also has the possibility of reducing the service life of the equipment. Summary of the invention
[0005] The purpose of the present invention is to provide a method for adjusting the electric power of an electromagnetic induction heating device according to the ambient temperature, so as to realize automatic energy-saving adjustment of the electric power of the electromagnetic induction heating device according to the actual ambient temperature, extend the service life of the equipment and reduce power consumption.
[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: A method for adjusting the electric power of an electromagnetic induction heating device according to the ambient temperature, comprising: S1. Set up on-site ambient temperature measurement points and use temperature sensors to measure ambient temperature T; S2. According to the actual working condition test, the most economical export strip steel target temperature T1 is set at each ambient temperature T, and the relationship between the export strip steel target temperature T1 and the on-site ambient temperature T is established: When the on-site ambient temperature T is less than 0°C, the target temperature T1 of the exit strip is set to 110°C; When the on-site ambient temperature T is between 0℃ and 40℃, the target temperature T1 of the outlet strip is set to: 110-0.75T; When the on-site ambient temperature T is greater than 40°C, the target temperature T1 of the export strip is set to 80°C; S3. According to the measured ambient temperature, the target temperature of the export strip and the relationship curve between the on-site ambient temperature, the target temperature of the export strip is calculated and displayed on the operating HMI computer screen; S4. Establish the relationship between the electric power P of the electromagnetic induction heating device and the set target temperature T1 of the export strip, and adjust the electric power P of the heating device according to the set target temperature T1 of the export strip to achieve energy saving.
[0007] The relationship between the electric power of the electric heating device and the target temperature of the outlet strip is: The electric power P of the electromagnetic induction heating device is: 22T1-1300, where T1 is the target temperature set for the outlet strip; The beneficial effects of the present invention are: The method of the present invention realizes that the set temperature of the outlet strip of the electromagnetic induction heating device is adjusted according to the actual ambient temperature, replacing manual setting, thereby realizing the energy-saving function of adjusting the electric power of the electromagnetic induction heating device according to the ambient temperature, reducing interference from human factors, ensuring the efficiency of rolling into products, and at the same time reducing energy consumption and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 is a flow chart of the method of the present invention; Figure 2 It is a curve chart showing the relationship between the target temperature of the steel coil at the outlet of the electromagnetic induction heating furnace and the ambient temperature.
[0009] Figure 3 It is a curve chart showing the relationship between the target temperature of the steel coil at the outlet of the electromagnetic induction heating furnace and the ambient temperature. DETAILED DESCRIPTION
[0010] The method of the present invention is further described below in conjunction with embodiments: Example
[0011] Operation process as Figure 1 As shown, including: Set up an ambient temperature measurement point on site and use a temperature sensor to measure the ambient temperature T; Select a temperature sensor with a suitable measurement range and accuracy. According to the actual on-site environment, select the WZP-01 sensor, the conductor material is a platinum resistor, and the measurement temperature range is -50-200°C. The temperature sensor is installed on the top of the electrical cabinet of the export ET station. The real-time ambient temperature measured by the temperature sensor is transmitted to the PLC through the laid cable to calculate the temperature analog value; 2. According to the actual working condition test, the most economical export strip temperature is set at each ambient temperature, and the relationship between the export strip target temperature and the on-site ambient temperature is established; When the on-site ambient temperature is less than 0°C, the target temperature of the export strip is set to 110°C; When the ambient temperature is between 0℃ and 40℃, the target temperature of the exit strip is set to: 110-0.75T, where T is the ambient temperature; When the on-site ambient temperature is greater than 40°C, the target temperature of the export strip is set at 80°C; Based on the above relationship, a curve can be drawn showing the relationship between the target temperature of the strip at the outlet of the electric induction heating device and the ambient temperature on site, such as Figure 2 As shown; 3. According to the relationship curve between the measured ambient temperature and the on-site ambient temperature, the target temperature of the export strip is calculated by PLC and displayed on the operating HMI computer screen. 4. Establish the relationship between the electric power of the heating device and the target temperature set for the export strip, set the target temperature according to the displayed export strip, and use PLC calculation to adjust the electric power of the electric heating device to achieve energy saving.
[0012] The relationship between the electric power of the electric heating device and the target temperature of the outlet strip is: The electric power of the electric heating device is 22T1-1300, where T1 is the target temperature set for the outlet strip; Based on the above relationship, a curve can be drawn showing the relationship between the electric power of the electric induction heating device and the target temperature of the outlet strip, such as Figure 3 shown.
Claims
1. A method for adjusting the electric power of an electromagnetic induction heating device according to the ambient temperature, characterized in that: include: S1. Set up on-site ambient temperature measurement points and use temperature sensors to measure ambient temperature; S2. Test the most economical outlet setting temperature at each ambient temperature according to actual working conditions, and establish the relationship curve between the outlet strip setting target temperature and the on-site ambient temperature; S3. According to the measured ambient temperature, the target temperature of the export strip and the relationship curve between the on-site ambient temperature, the target temperature of the export strip is calculated and displayed on the operating HMI computer screen; S4. Establish the relationship between the target temperature of the export strip and the electric power of the electromagnetic induction heating device, and adjust the electric power of the heating device according to the target temperature of the export strip.
2. A method for adjusting the electric power of an electromagnetic induction heating device according to the ambient temperature according to claim 1, characterized in that: The relationship between the ambient temperature in S2, the target temperature of the exit strip and the ambient temperature on site is: When the on-site ambient temperature is less than 0°C, the target temperature of the export strip is set to 110°C; When the on-site ambient temperature is between 0℃ and 40℃, the target temperature of the export strip is set to: 110-0.75T, where T is the ambient temperature; When the on-site ambient temperature is greater than 40°C, the target temperature of the export strip is set at 80°C.
3. A method for adjusting the electric power of an electromagnetic induction heating device according to the ambient temperature according to claim 1, characterized in that: The relationship between the target temperature set for the export strip and the electric power of the electromagnetic induction heating device described in S4 is as follows: the electric power of the electric heating device is 22T1-1300, where T1 is the target temperature set for the export strip.