System for automatically adjusting frequency of high-speed wire rod air cooling roller way fan in steel production

Abstract

The utility model discloses a system for automatically adjusting the frequency of a high-speed wire rod air-cooling roller way fan in steel production, which comprises a first acquisition module, a control module, a frequency reduction module, a first frequency modulation module, a second acquisition module and a control module, the working current of the high-speed wire rod air-cooling roller way fan at the next moment is calculated according to the rated current of the high-speed wire rod air-cooling roller way fan, and then the working current is sent to the high-speed wire rod air-cooling roller way fan; the alarm module is used for receiving the shutdown signal of the first acquisition module, calculating the duration time of the shutdown signal, and sending an alarm signal when the duration time exceeds a preset value; the frequency reduction module is further used for receiving an alarm signal of the alarm module and sending a signal of stopping rotation to the high-speed wire rod air cooling roller way fan; according to the utility model, the power consumption of the air-cooled roller way fan can be reduced, and the service life of the air-cooled roller way fan is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of steel rolling equipment, in particular to a system for automatically adjusting the frequency of a high-speed wire rod air-cooling roller fan in steel production. Background Art

[0002] High-speed wire rod refers to steel rolled using high-speed rolling mills. Its characteristics include a rapid production pace and the ability to produce large quantities of product in a short period of time. Air-cooled roller table fans play a crucial role in the rolling mill process, primarily cooperating with air-cooled roller tables to cool the rolled material. During the rolling process, the rolled material reaches a high temperature after rolling. Air-cooled roller table fans cool the rolled material by blowing air to promote air flow and accelerate heat dissipation. This helps control the performance and quality of the rolled material, such as adjusting physical properties like hardness and strength.

[0003] Modern steel rolling mill equipment is controlled through complex control systems based on communication networks. The general control process is as follows: the master PLC communicates with the slave PLCs, transmitting signals such as mill start and stop signals. The slave PLCs then transmit control signals to the DC speed regulator, which activates and controls the mill's drive motor. A rolling line refers to the entire production line, from the moment a billet enters the rolling process, through a series of rolling equipment, to the final product. This line includes various rolling mills, heating furnaces, cooling equipment, conveyors, and other equipment, requiring regular inspection and maintenance.

[0004] Air-cooled roller conveyor fans utilize a frequency converter (VFD) to adjust the motor input voltage and frequency, thereby varying the motor speed and, consequently, the fan's operating status. When the VFD changes the motor's power supply frequency, it directly affects the motor's speed. When the frequency decreases, the motor speed slows, and the fan's output air volume and pressure decrease accordingly. Conversely, when the frequency increases, the fan's output increases accordingly.

[0005] During the production of high-speed wire, if there is a short shutdown for rolling inspection or guide replacement, the air-cooled roller fan cannot be stopped in time. Moreover, due to the frequent shutdowns and the high power of the fan, the power loss is relatively serious. Utility Model Content

[0006] The purpose of the utility model is to provide a system for automatically adjusting the frequency of high-speed wire air-cooled roller fans in steel production, so as to solve the problem that when short-term shutdowns such as rolling line inspections or guide replacements occur, the air-cooled roller fans cannot be stopped in time, and the shutdowns are frequent and the fan power is large, resulting in serious power loss.

[0007] The utility model adopts the following technical solution: a system for automatically adjusting the frequency of high-speed wire rod air-cooling roller fans in steel production, comprising:

[0008] The first acquisition module is used to collect the stop signal of the rolling mill and send it;

[0009] A control module, configured to receive a shutdown signal from the first acquisition module and send a frequency reduction signal;

[0010] A frequency reduction module is used to receive the frequency reduction signal of the control module, and calculate the working current of the high-speed wire air-cooling roller fan at the next moment according to the rated current of the high-speed wire air-cooling roller fan, and then send the working current to the high-speed wire air-cooling roller fan;

[0011] an alarm module, configured to receive the shutdown signal from the first acquisition module, calculate the duration of the shutdown signal, and send an alarm signal when the duration exceeds a predetermined value;

[0012] The frequency reduction module is also used to receive the alarm signal from the alarm module and send a stop signal to the high-speed wire air-cooling roller fan.

[0013] Furthermore, the operating current of the high-speed wire rod air-cooling roller conveyor fan in the frequency reduction module at the next moment is 5% to 10% of the rated current of the high-speed wire rod air-cooling roller conveyor fan.

[0014] Furthermore, it also includes:

[0015] The second acquisition module is used to collect the start signal of the rolling mill and send it;

[0016] The frequency increasing module is used to receive the start signal of the second acquisition module and send a signal to the high-speed wire rod air-cooling roller conveyor fan to increase the working current, thereby making the high-speed wire rod air-cooling roller conveyor fan work normally.

[0017] The beneficial effects of the utility model are:

[0018] The utility model can timely collect the shutdown signal of the rolling mill by setting a first acquisition module and send it to the control module, so that the control module instructs the frequency reduction module to send a frequency reduction signal, thereby controlling the working current of the air-cooled roller fan, that is, controlling the working current of the air-cooled roller fan to 5% to 10% of the rated current, thereby reducing power loss;

[0019] The utility model can send an alarm signal according to the duration of the stop signal of the rolling mill through the alarm module, and send a stop rotation signal to the high-speed wire rod air-cooling roller fan to control the air-cooling roller fan to stop working;

[0020] The utility model sets a second acquisition module, which sends a signal to the air-cooled roller fan to increase the working current when the rolling mill is normally started, thereby making the high-speed wire rod air-cooled roller fan work normally;

[0021] The utility model can reduce the power consumption of the air-cooling roller conveyor fan and prolong the service life of the air-cooling roller conveyor fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a system schematic diagram of the present utility model.

[0023] Among them: 1. First acquisition module; 2. Control module; 3. Frequency reduction module; 4. Alarm module; 5. Second acquisition module; 6. Frequency increase module. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0025] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in this utility model without affecting the effects and purposes that can be achieved by the present utility model.

[0026] The utility model discloses a system for automatically adjusting the frequency of high-speed wire rod air-cooling roller fans in steel production. Figure 1 As shown, it includes: a first acquisition module 1, a control module 2, a frequency reduction module 3, and an alarm module 4.

[0027] The first acquisition module 1 is used to collect the shutdown signal of the rolling mill and send it; the control module 2 is used to receive the shutdown signal of the first acquisition module 1 and send a frequency reduction signal; the frequency reduction module 3 is used to receive the frequency reduction signal of the control module 2, and calculate the working current of the high-speed wire air-cooled roller fan at the next moment according to the rated current of the high-speed wire air-cooled roller fan, and then send the working current to the high-speed wire air-cooled roller fan.

[0028] The alarm module 4 is used to receive the shutdown signal of the first acquisition module 1 and calculate the duration of the shutdown signal, and send an alarm signal when the duration exceeds a predetermined value. The frequency reduction module 3 is also used to receive the alarm signal of the alarm module 4 and send a stop rotation signal to the high-speed wire air-cooled roller fan.

[0029] The working current of the high-speed wire rod air-cooling roller conveyor fan in the frequency reduction module 3 at the next moment is 5% to 10% of the rated current of the high-speed wire rod air-cooling roller conveyor fan.

[0030] The utility model also includes: a second acquisition module 5 and a frequency-increasing module 6. The second acquisition module 5 is used to acquire the starting signal of the rolling mill and send it; the frequency-increasing module 6 is used to receive the starting signal of the second acquisition module 5 and send a signal to increase the working current to the high-speed wire rod air-cooling roller fan, thereby enabling the high-speed wire rod air-cooling roller fan to work normally.

[0031] The working process of this utility model is:

[0032] The first acquisition module 1 and the second acquisition module 5 collect the stop signal and start signal of the rolling mill in real time. When the rolling mill is in the stop state, the control module 2 controls the frequency reduction module 3 to send a signal to reduce the working current of the air-cooled roller fan, thereby reducing the power consumption of the air-cooled roller fan; when the rolling mill is in the start state, the frequency increase module 6 sends a signal to increase the working current of the air-cooled roller fan, so that the air-cooled roller fan can operate normally below the rated current.

[0033] The utility model is capable of timely collecting the shutdown signal of the rolling mill by setting the first acquisition module 1 and sending it to the control module 2, so that the control module 2 instructs the frequency reduction module 3 to send a frequency reduction signal, thereby controlling the working current of the air-cooled roller fan, that is, controlling the working current of the air-cooled roller fan to 5% to 10% of the rated current, thereby reducing power loss;

[0034] The utility model can send an alarm signal according to the duration of the stop signal of the rolling mill through the alarm module 4, and send a stop rotation signal to the high-speed wire rod air-cooled roller fan to control the air-cooled roller fan to stop working; the utility model sets a second acquisition module 5, and sends a signal to increase the working current to the air-cooled roller fan when it is collected that the rolling mill is started normally, thereby making the high-speed wire rod air-cooled roller fan work normally.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A system for automatically adjusting the frequency of high-speed wire rod air-cooling roller fans in steel production, characterized in that: include: A first acquisition module (1) is used to acquire and send a stop signal of the rolling mill; A control module (2) is used to receive a shutdown signal from the first acquisition module (1) and send a frequency reduction signal; A frequency reduction module (3) is used to receive the frequency reduction signal of the control module (2), calculate the operating current of the high-speed wire air-cooling roller conveyor fan at the next moment according to the rated current of the high-speed wire air-cooling roller conveyor fan, and then send the operating current to the high-speed wire air-cooling roller conveyor fan; An alarm module (4) is used to receive the shutdown signal from the first acquisition module (1), calculate the duration of the shutdown signal, and send an alarm signal when the duration exceeds a predetermined value; The frequency reduction module (3) is also used to receive the alarm signal from the alarm module (4) and send a signal to the high-speed wire air-cooling roller fan to stop rotating.

2. The system for automatically adjusting the frequency of high-speed wire rod air-cooling roller fans in steel production according to claim 1, characterized in that: The operating current of the high-speed wire air-cooling roller fan in the frequency reduction module (3) at the next moment is 5% to 10% of the rated current of the high-speed wire air-cooling roller fan.

3. The system for automatically adjusting the frequency of high-speed wire rod air-cooling roller conveyor fans in steel production according to claim 1, characterized in that: Also includes: The second acquisition module (5) is used to collect the start signal of the rolling mill and send it; The frequency increasing module (6) is used to receive the start signal of the second acquisition module (5) and send a signal to increase the working current to the high-speed wire rod air-cooling roller conveyor fan, thereby enabling the high-speed wire rod air-cooling roller conveyor fan to operate normally.

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