Energy-saving control system of blast furnace granulated slag sealing-tape machine

Abstract

The utility model discloses an energy-saving control system for a blast furnace granulated slag sealing-tape machine, which relates to the technical field of energy-saving frequency conversion and comprises a plurality of sealing-tape machines and a plurality of signal detection devices uniformly arranged along the sealing-tape machines at intervals. The frequency converter is arranged on a motor of the sealing-tape machine; the signal detection device and the frequency converter are electrically connected with the PLC device; the output end of the signal detection device is connected with the input end of the PLC device, one end of the frequency converter is connected with the output end of the PLC device, and the other end of the frequency converter is connected with the motor. By utilizing the energy-saving frequency conversion technology, the frequency of the motor can be automatically adjusted according to various parameters detected by the signal detection device on the sealing-tape machine, so that the energy consumption of the sealing-tape machine in a no-load operation state is reduced, the working efficiency is improved, and effective energy conservation is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving frequency conversion, and in particular to an energy-saving control system for a blast furnace slag belt conveyor. Background Art

[0002] In recent years, with the rapid development of the domestic steel industry, high-power belt conveyor systems have become the main mode of transporting blast furnace slag. However, existing steel companies generally adopt a production mode of two shifts per day and about 320 days per year, resulting in a relatively high proportion of electricity consumption in the entire industry. With the upgrade of the country's environmental protection and carbon emission control of enterprises, a problem has gradually emerged: most of the time, the slag belt conveyor is in an unloaded state, which not only wastes electricity, but also has adverse effects on the environment.

[0003] At present, most companies' slag belt conveyors are still driven by motors and run at industrial frequency, even when there is no material to be conveyed. This causes the belt conveyors to be in a no-load running state for a long time, exacerbating resource waste and environmental pressure.

[0004] Therefore, how to reduce the energy consumption of the belt conveyor transport system when it is running at no load has become one of the problems to be solved urgently in this field. Utility Model Content

[0005] In order to reduce the energy consumption of the belt conveyor transport system in the no-load operation state, the utility model provides the following technical solutions:

[0006] The utility model provides an energy-saving control system for a blast furnace slag belt conveyor, comprising a plurality of belt conveyors, a plurality of signal detection devices evenly spaced along the belt conveyors; and

[0007] A frequency converter provided on the motor of the belt conveyor;

[0008] The signal detection device and the frequency converter are both electrically connected to the PLC device;

[0009] The output end of the signal detection device is connected to the input end of the PLC device, one end of the frequency converter is connected to the output end of the PLC device, and the other end is connected to the motor.

[0010] Furthermore, there are three groups of signal detection devices, which are respectively arranged at the material inlet, the middle and the material outlet of the belt conveyor along the belt conveying direction.

[0011] Furthermore, the signal detection device includes a material flow detection sensor, a material thickness detection sensor, a speed detection sensor arranged above the belt conveyor, and a material weight detection sensor arranged below the belt of the belt conveyor, and the material flow detection sensor, the material thickness detection sensor, the speed detection sensor and the material weight detection sensor are all electrically connected to the PLC device.

[0012] Furthermore, the signal detection device also includes a camera which is also arranged above the tape machine and is electrically connected to the PLC device.

[0013] Furthermore, the material flow detection sensor and the material thickness detection sensor are both ultrasonic sensors, and the longitudinal heights of several of the material flow detection sensors remain consistent, and the longitudinal heights of several of the material thickness detection sensors also remain consistent.

[0014] Furthermore, it also includes a signal transmission module arranged between the signal detection device and the PLC device, the input end of the signal transmission module is connected to the output end of the signal detection device, and the output end is connected to the PLC device through an optical fiber.

[0015] Furthermore, it also includes a host computer system connected to the PLC device.

[0016] Furthermore, the PLC device realizes remote communication with the host computer system through a communication module.

[0017] Furthermore, the communication module is a 2G / 3G / 4G / 5G communication device or a ZigBee / Wi-Fi communication device.

[0018] The beneficial effects of the utility model compared with the prior art are:

[0019] The utility model utilizes energy-saving frequency conversion technology, and can automatically adjust the motor frequency according to various parameters detected by the signal detection device on the belt conveyor, thereby reducing the energy consumption of the belt conveyor in the no-load operation state, improving work efficiency and achieving effective energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of the energy-saving control system for the blast furnace slag belt conveyor in the embodiment of the utility model;

[0022] Among them: 1-tape machine, 2-signal detection device, 201-material flow detection sensor, 202-material thickness detection sensor, 203-speed detection sensor, 204-material weight detection sensor, 205-camera, 3-motor, 4-frequency converter, 5-PLC device, 6-host computer system. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] In addition, the specific models of the electrical components involved in this embodiment can be selected by those skilled in the art according to actual working conditions. This is a conventional technical means and will not be described in detail in this embodiment.

[0025] like Figure 1 As shown, an embodiment of the present application discloses an energy-saving control system for a blast furnace slag belt conveyor, comprising a plurality of belt conveyors 1, a plurality of signal detection devices 2 evenly spaced along the belt conveyors 1; and a frequency converter 4 arranged on the motor 3 of the belt conveyor 1; the signal detection device 2 and the frequency converter 4 are both electrically connected to a PLC device 5; the output end of the signal detection device 2 is connected to the input end of the PLC device 5, one end of the frequency converter 4 is connected to the output end of the PLC device 5, and the other end is connected to the motor 3.

[0026] The utility model discloses an energy-saving control system for a blast furnace slag belt conveyor, which utilizes energy-saving frequency conversion technology to automatically adjust the frequency of a motor 3 according to various parameters detected by a signal detection device 2 on the belt conveyor 1, thereby reducing the energy consumption of the belt conveyor 1 in a no-load operation state, improving work efficiency, and achieving effective energy saving.

[0027] The embodiment of the present application does not specifically limit the type of motor 3. Preferably, the AC variable frequency motor can adjust the speed and output power of the motor 3 so that the motor 3 can run on demand, avoiding energy loss when starting and stopping traditional motors, thereby improving energy utilization and reducing energy consumption costs.

[0028] Specifically, there are three groups of signal detection devices 2 in the embodiment of the present application, which are respectively arranged at the material inlet, the middle and the material outlet of the belt conveyor 1 along the belt conveying direction.

[0029] Three groups of signal detection devices 2 are respectively arranged at the material entrance, the middle and the material exit along the conveying direction of the belt, which can realize comprehensive monitoring and detection as much as possible, ensuring that various operating conditions of the material on the belt conveyor 1 can be accurately recorded and monitored, thereby effectively realizing the adjustment and optimization of operating parameters and improving the operating efficiency and stability of the equipment.

[0030] Specifically, the signal detection device 2 in the embodiment of the present application includes a material flow detection sensor 201, a material thickness detection sensor 202, a speed detection sensor 203 arranged above the belt conveyor 1, and a material weight detection sensor 204 arranged below the belt of the belt conveyor 1. The material flow detection sensor 201, the material thickness detection sensor 202, the speed detection sensor 203 and the material weight detection sensor 204 are all electrically connected to the PLC device 5.

[0031] The material flow detection sensor 201 can detect the presence of material; the material thickness detection sensor 202 and the material weight detection sensor 204 can be combined to determine the amount of material, so that the frequency converter 4 outputs a suitable frequency and adjusts the speed of the motor 3; the speed detection sensor 203 can detect the running speed of the belt conveyor 1 to ensure the normal operation of the belt conveyor 1.

[0032] Specifically, the signal detection device 2 in the embodiment of the present application further includes a camera 205 which is also arranged above the tape machine 1 and is electrically connected to the PLC device 5 .

[0033] Camera 205 can collect material images on the tape. Through conventional image processing technology in the prior art, it can extract features from the material images and obtain material information above the tape. It can then be combined with material flow parameters, material thickness parameters, and material weight parameters for judgment, thereby reducing the error of a single detection parameter and improving measurement accuracy.

[0034] Specifically, the material flow detection sensor 201 and the material thickness detection sensor 202 in the embodiment of the present application are both ultrasonic sensors, and the longitudinal heights of several material flow detection sensors 201 are kept consistent with each other, and the longitudinal heights of several material thickness detection sensors 202 are also kept consistent with each other.

[0035] Ultrasonic sensors can measure without contacting the object, which helps reduce interference and damage to the object being measured, while also reducing maintenance and usage costs. By keeping the height between sensors consistent, measurement errors caused by different positions or heights can be reduced, helping to improve the accuracy and reliability of sensor detection.

[0036] Specifically, the PLC device 5 in the embodiment of the present application performs average processing on the detected parameters of the same type.

[0037] The sensor detection process may be affected by random noise from the environment or the device itself. Therefore, by taking the average value of multiple sensors, the impact of this random noise on the detection results can be reduced, thereby improving the reliability of the detection results. And when a single sensor fails or is abnormal, taking the average value of multiple sensor detection values ​​can reduce the impact of single-point failures on the detection results and improve the accuracy of the detection results.

[0038] Specifically, the embodiment of the present application also includes a signal transmission module arranged between the signal detection device 2 and the PLC device 5, the input end of the signal transmission module is connected to the output end of the signal detection device 2, and the output end is connected to the PLC device 5 through an optical fiber.

[0039] The utility model does not make a specific selection of the model of the signal transmission module. Preferably, the signal transmission module can be a wireless transmission module, such as a Bluetooth component, a Wi-Fi component, an infrared transmission component or a GRS component; it can also be a wired transmission module, such as a USB interface component or an optical fiber.

[0040] Specifically, the embodiment of the present application also includes a host computer system 6 connected to the PLC device 5. The PLC device 5 realizes remote communication with the host computer system 6 through a communication module. The communication module is a 2G / 3G / 4G / 5G communication device or a ZigBe / Wi-Fi communication device.

[0041] Remote communication using 2G / 3G / 4G / 5G communication or ZigBee / Wi-Fi technology has the advantages of high speed and stability, wide coverage, flexible selection, low power consumption, high security and diversity. Appropriate communication technology can be selected according to specific needs to improve communication efficiency, reliability and security. At the same time, the detection parameters of the signal detection device 2 can be adjusted and set on the host computer system 6, which is convenient for modification at any time to meet actual process needs. The host computer system 6 can also be set to display system parameters such as operation, stop, fault, power consumption, and power saving to achieve diversified remote management.

[0042] The specific workflow of the embodiment of the present application is as follows:

[0043] After the belt conveyor 1 is started, the motor 3 will run at a low speed with a frequency of 5HZ. This is the initial state of the belt conveyor 1. When the material flow detection sensor 201 detects that there is material on the belt conveyor 1, the material thickness detection sensor 202 and the material weight detection sensor 204 start to work, and detect the material thickness and weight in real time. The PLC device 5 will filter and sort the thickness data and weight data fed back by the material thickness detection sensor 202 and the material weight detection sensor 204 in real time to calculate the current actual thickness and actual weight. The PLC device 5 will then make a judgment based on the material thickness, quality and the pile image captured by the camera, and divide the material quantity into four situations: 0%-10%, 10%-50%, 50%-80% and more than 80%. Corresponding to these four situations, the PLC device 5 will output signals of different frequencies to the frequency converter 4, and then the frequency converter 4 will adjust the speed of the motor 3 to realize the automatic speed regulation of the belt conveyor 1. Specifically, the four material situations correspond to the idle speed, low speed, medium speed and high speed operation of the motor 3 respectively.

[0044] When the material flow detection sensor 201 detects that the material on the belt conveyor 1 disappears, the PLC converter 5 sends a 5HZ operating signal to the inverter 3 after judgment. After the inverter 3 receives the 5HZ operating signal from the PLC device 5, it will directly reduce the speed of the motor 3 from the current operating state to the idle operating state.

[0045] After the PLC device 5 completes the speed adjustment of the motor 3 , it will also determine whether the speed reaches a preset value based on the speed signal detected by the speed detection sensor 203 .

[0046] It can be seen that the utility model of a blast furnace slag belt conveyor energy-saving control system, using energy-saving frequency conversion technology, can automatically adjust the frequency of the motor 3 according to various parameters detected by the signal detection device 2 on the belt conveyor 1, reduce the energy consumption of the belt conveyor 1 in the no-load operation state, improve work efficiency, and achieve effective energy saving.

[0047] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0048] The utility model uses specific examples to illustrate the principle and implementation of the utility model. The above is only the preferred implementation of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made to it without departing from the principle and spirit of the utility model shall be included in the protection scope of the utility model.

Claims

1. A blast furnace slag belt conveyor energy-saving control system, characterized in that: It comprises a plurality of adhesive tape machines (1), a plurality of signal detection devices (2) evenly spaced along the adhesive tape machines (1); and A frequency converter (4) arranged on the motor (3) of the adhesive tape machine (1); The signal detection device (2) and the frequency converter (4) are both electrically connected to a PLC device (5); The output end of the signal detection device (2) is connected to the input end of the PLC device (5); one end of the frequency converter (4) is connected to the output end of the PLC device (5), and the other end is connected to the motor (3).

2. The energy-saving control system for blast furnace slag belt conveyor according to claim 1 is characterized in that: The signal detection device (2) has three groups, which are respectively arranged at the material inlet, the middle and the material outlet of the belt conveyor (1) along the belt conveying direction.

3. The energy-saving control system for blast furnace slag belt conveyor according to claim 1 is characterized in that: The signal detection device (2) comprises a material flow detection sensor (201), a material thickness detection sensor (202), a speed detection sensor (203) arranged above the tape conveyor (1), and a material weight detection sensor (204) arranged below the tape of the tape conveyor (1); the material flow detection sensor (201), the material thickness detection sensor (202), the speed detection sensor (203), and the material weight detection sensor (204) are all electrically connected to the PLC device (5).

4. The energy-saving control system for blast furnace slag belt conveyor according to claim 3 is characterized in that: The signal detection device (2) also includes a camera (205) which is also arranged above the tape machine (1) and is electrically connected to the PLC device (5).

5. The energy-saving control system for blast furnace slag belt conveyor according to claim 3 is characterized in that: The material flow detection sensor (201) and the material thickness detection sensor (202) are both ultrasonic sensors, and the longitudinal heights of a plurality of the material flow detection sensors (201) are kept consistent with each other, and the longitudinal heights of a plurality of the material thickness detection sensors (202) are also kept consistent with each other.

6. The energy-saving control system for blast furnace slag belt conveyor according to claim 1 is characterized in that: It also includes a signal transmission module arranged between the signal detection device (2) and the PLC device (5), wherein the input end of the signal transmission module is connected to the output end of the signal detection device (2), and the output end is connected to the PLC device (5) via an optical fiber.

7. The energy-saving control system for blast furnace slag belt conveyor according to claim 1 is characterized in that: It also includes a host computer system (6) connected to the PLC device (5).

8. The energy-saving control system for blast furnace slag belt conveyor according to claim 7 is characterized in that: The PLC device (5) realizes remote communication with the host computer system (6) via a communication module.

9. The energy-saving control system for blast furnace slag belt conveyor according to claim 8 is characterized in that: The communication module is a 2G / 3G / 4G / 5G communication device or a ZigBee / Wi-Fi communication device.

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