An ultra-short network synchronous / asynchronous working condition-adaptive automatic control device for electric furnace

Abstract

The present invention relates to the technical field of digital automatic control and automatic adjustment of equipment, and in particular to an ultra-short network synchronous / asynchronous adaptive working condition automatic control device for an electric melting furnace. The braking motor of the device drives a digital reducer and an active reversing sector-shaped rotating gear to rotate. The active reversing sector-shaped rotating gear is connected to two driven reversing sector-shaped rotating gears, and causes the driven reversing sector-shaped rotating gears to reverse and rotate respectively; each driven reversing sector-shaped rotating gear is in contact with a driven electromagnetic clutch sensor respectively. A driven electromagnetic clutch sensor is connected to a lifting electrode drum, and a steel wire rope is wrapped around the lifting electrode drum through a pulley and connected to the electrode; another driven electromagnetic clutch sensor is connected to a lifting conductive boom drum, and a steel wire rope is wrapped around the lifting conductive boom drum through a pulley and connected to the conductive boom. The present invention only uses a set of braking motor drive systems to realize intelligent control of the short network power supply adaptive working conditions of the electrode and the conductive boom.

Description

Technical Field

[0001] The present invention relates to the technical field of digital automatic control and automatic regulation of equipment, and in particular to an ultra-short network synchronous / asynchronous working condition-adaptive automatic control device for an electric melting furnace. Background Art

[0002] In the process of fused magnesium production, it is necessary to continuously adjust the current and power of the power supply system according to the working conditions of the fused magnesium furnace. In the traditional fused magnesium furnace power supply system, electrode operation control is one of the main means to adjust the power supply balance of the system. With the continuous advancement of technology, the conductive arm and electrode comprehensive control are introduced to achieve the goal of system stability and energy saving of the fused magnesium production power supply system. Therefore, determining to achieve system stability and energy saving with the minimum adjustment range is one of the latest important goals pursued by fused magnesium production control. Summary of the invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide an ultra-short network synchronous / asynchronous operating condition-adaptive automatic control device for an electric melting furnace. Through the innovatively developed automatic control system consisting of a set of brake motor drive systems and sensor systems, comprehensive control enables the two short network power supply bodies, the electrode and the conductive arm, to automatically operate synchronously or asynchronously according to the operating conditions, thereby reducing the system adjustment process and quickly achieving the purpose of system balance and energy saving.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A synchronous / asynchronous working condition-adaptive automatic control device for an electric melting furnace with an ultra-short network, wherein a braking motor of the device drives a digital reducer and an active reversing sector gear to rotate, wherein the active reversing sector gear is connected to two driven reversing sector gears, and causes the driven reversing sector gears to reverse and rotate respectively, and each driven reversing sector gear is in contact with a driven electromagnetic clutch sensor respectively; one driven electromagnetic clutch sensor is connected to a lifting electrode drum, and a steel wire rope is wound around the lifting electrode drum through a pulley and connected to the electrode; another driven electromagnetic clutch sensor is connected to a lifting conductive boom drum, and a steel wire rope is wound around the lifting conductive boom drum through a pulley and connected to the conductive boom, and two rotary digital collectors and a hydraulic workstation are connected to a system controller.

[0006] The electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device includes: an active motor and a digital reducer, an active reversing sector rotating gear, a driven reversing sector rotating gear A, a driven electromagnetic clutch sensor A, a lifting electrode drum, a driven reversing sector rotating gear B, a driven electromagnetic clutch sensor B, a lifting conductive boom drum, an electrode, a conductive boom, an electrode holder, a rotary digital collector A, and a rotary digital collector B. The specific structure is as follows:

[0007] The output end of the active motor and the digital reducer is vertically equipped with an active reversing sector gear, which is driven by the active motor and the digital reducer to rotate in a positive or reverse direction; the upper and lower ends of the active reversing sector gear are respectively meshed with the driven reversing sector gear A and the driven reversing sector gear B, and the driven reversing sector gear A and the driven reversing sector gear B are reversed and rotated by the active reversing sector gear;

[0008] A driven electromagnetic clutch sensor A, a lifting electrode drum and a rotary digital collector A are sequentially arranged on the top of the gear shaft A of the driven reversing sector rotating gear A. The gear shaft A of the driven reversing sector rotating gear A is in contact with the driven electromagnetic clutch sensor A. The rotary digital collector A and the driven electromagnetic clutch sensor A are respectively connected to the upper and lower ends of the lifting electrode drum; a steel wire rope A is connected to the pulley A in a transmission manner, one end of the steel wire rope A is wrapped around the lifting electrode drum, and the other end of the steel wire rope A is connected to the vertically arranged electrode;

[0009] A driven electromagnetic clutch sensor B, a lifting conductive boom roller and a rotary digital collector B are arranged in sequence at the bottom of the gear shaft B of the driven reversing sector rotating gear B. The gear shaft B of the driven reversing sector rotating gear B is in contact with the driven electromagnetic clutch sensor B. The rotary digital collector B and the driven electromagnetic clutch sensor B are respectively connected to the upper and lower ends of the lifting conductive boom roller; a steel wire rope B is connected to the pulley B in transmission, one end of the steel wire rope B is wrapped around the lifting conductive boom roller, and the other end of the steel wire rope B is connected to the conductive boom. An electrode clamp is arranged at the bottom of the conductive boom, one end of the electrode clamp corresponds to the electrode, and the other end of the electrode clamp is connected to the hydraulic workstation, and the hydraulic workstation drives the electrode clamp to clamp or release the electrode.

[0010] The electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device, the active motor and the digital reducer include a brake motor and a digital reducer, the digital reducer is installed at the output end of the brake motor, and the brake motor drives the digital reducer and the active reversing fan-shaped rotating gear to rotate.

[0011] The electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device, the system controller is connected to the rotary digital collector A, the driven electromagnetic clutch sensor A, the active motor and the digital reducer, the driven electromagnetic clutch sensor B, the rotary digital collector B, and the hydraulic workstation through lines.

[0012] The electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device, the system controller drives the brake motor to operate according to the production control instruction, and drives the motor to operate forward or reverse in time according to the production working condition.

[0013] The described electric furnace ultra-short network synchronous / asynchronous operating condition-adaptive automatic control device has a system controller with an embedded ARM processor as the core, which receives instructions from the production command system, drives the brake motor to operate in an appropriate condition, and drives the electrode and conductive arm operating indicators to adjust accordingly according to changes in production current and power indicators; when system adjustment is required, the driven electromagnetic clutch sensor A and the electromagnetic clutch sensor B are controlled to separate or close synchronously or in steps, ensuring that the short network power supply system achieves the purpose of rapid balance and energy saving.

[0014] The advantages and beneficial effects of the present invention are:

[0015] 1. The present invention uses a set of comprehensive automatic control of a brake motor drive system and a sensor system to enable the two short-grid power supply bodies, the electrode and the conductive arm, to automatically operate synchronously or asynchronously according to the working conditions, thereby reducing the system adjustment process, quickly achieving system balance, achieving precise control and rapid balance of the system, and greatly improving energy saving efficiency.

[0016] 2. The present invention uses a set of brake motor driven digital reducer to drive two driven sector-shaped rotating gears to rotate synchronously through sector-shaped rotating gears, and controls the attraction and separation of electromagnetic clutch sensor A or electromagnetic clutch sensor B according to working conditions, which not only ensures the synchronization of the electrode and the conductive arm, but also achieves the purpose of asynchronous control operation.

[0017] 3. The system controller of the present invention uses a set of brake motor drive system and sensor system to comprehensively control the two short-circuit power supply bodies, the electrode and the conductive arm, to operate synchronously or asynchronously according to the working conditions, thereby reducing the system adjustment process and quickly achieving the purpose of system balance. The brake control system can rotate forward and reverse, control the operation of the electrode and the conductive arm according to the working conditions, and dynamically adjust the arc current and power. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an ultra-short network synchronous / asynchronous working condition-adaptive automatic control device for an electric melting furnace according to the present invention;

[0019] In the figure, 1 is an active motor and a digital reducer, 2 is an active reversing sector-shaped rotating gear, 3 is a driven reversing sector-shaped rotating gear A (31 gear shaft A), 4 is a driven electromagnetic clutch sensor A, 5 is a lifting electrode roller, 6 is a driven reversing sector-shaped rotating gear B (61 gear shaft B), 7 is a driven electromagnetic clutch sensor B, 8 is a lifting conductive boom roller, 9 is an electrode, 10 is a conductive boom, 11 is an electrode holder, 12 is a system controller, 13 is a rotary digital collector A, 14 is a rotary digital collector B, 15 is a hydraulic workstation, 16 is a wire rope A, 17 is a pulley A, 18 is a wire rope B, and 19 is a pulley B. DETAILED DESCRIPTION

[0020] The present invention is described in further detail below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, the electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device of the present invention mainly includes: an active motor and a digital reducer 1, an active reversing sector rotating gear 2, a driven reversing sector rotating gear A3, a driven electromagnetic clutch sensor A4, a lifting electrode drum 5, a driven reversing sector rotating gear B6, a driven electromagnetic clutch sensor B7, a lifting conductive boom drum 8, an electrode 9, a conductive boom 10, an electrode holder 11, a system controller 12, a rotary digital collector A13, a rotary digital collector B14, and a hydraulic workstation 15. The specific structure is as follows:

[0022] The output end of the active motor and the digital reducer 1 is vertically installed with an active reversing sector gear 2, which is driven by the active motor and the digital reducer 1 to rotate forward or reversely; the upper and lower ends of the active reversing sector gear 2 are respectively meshed with the driven reversing sector gear A3 and the driven reversing sector gear B6, and the driven reversing sector gear A3 and the driven reversing sector gear B6 are reversed and rotated by the active reversing sector gear 2;

[0023] A driven electromagnetic clutch sensor A4, a lifting electrode drum 5 and a rotary digital collector A13 are sequentially arranged on the top of the gear shaft A31 of the driven reversing sector rotating gear A3. The gear shaft A31 of the driven reversing sector rotating gear A3 is in contact with the driven electromagnetic clutch sensor A4. The rotary digital collector A13 and the driven electromagnetic clutch sensor A4 are respectively connected to the upper and lower ends of the lifting electrode drum 5. A steel wire rope A16 is transmission-connected to a pulley A17. One end of the steel wire rope A16 is wrapped around the lifting electrode drum 5, and the other end of the steel wire rope A16 is connected to the vertically arranged electrode 9.

[0024] A driven electromagnetic clutch sensor B7, a lifting conductive boom roller 8 and a rotary digital collector B14 are sequentially arranged at the bottom of the gear shaft B61 of the driven reversing sector rotating gear B6. The gear shaft B61 of the driven reversing sector rotating gear B6 is in contact with the driven electromagnetic clutch sensor B7. The rotary digital collector B14 and the driven electromagnetic clutch sensor B7 are respectively connected to the upper and lower ends of the lifting conductive boom roller 8. The wire rope B18 is transmission-connected to the pulley B19. One end of the wire rope B18 is wrapped around the lifting conductive boom roller 8. The other end of the wire rope B18 is connected to the conductive boom 10. An electrode clamp 11 is arranged at the bottom of the conductive boom 10. One end of the electrode clamp 11 corresponds to the electrode 9. The other end of the electrode clamp 11 is connected to the hydraulic workstation 15. The hydraulic workstation 15 can drive the electrode clamp 11 to clamp or release the electrode 9.

[0025] The active motor and digital reducer 1 includes a brake motor and a digital reducer. The digital reducer is installed at the output end of the brake motor. The brake motor drives the digital reducer and the active reversing sector gear 2 to rotate. The system controller 12 is connected to the rotary digital collector A13, the driven electromagnetic clutch sensor A4, the active motor and digital reducer 1, the driven electromagnetic clutch sensor B7, the rotary digital collector B14, and the hydraulic workstation 15 through lines. The system controller 12 drives the brake motor to operate according to the production control instruction, and drives the motor to operate forward or reverse in time according to the production working conditions.

[0026] The system controller 12 is based on an embedded ARM processor, receives instructions from the production command system, drives the brake motor to operate in appropriate conditions, and adjusts the operating indicators of the drive electrode 9 and the conductive arm 10 according to changes in production current, power and other indicators; when system adjustment is required, it controls the driven electromagnetic clutch sensor A4 and the driven electromagnetic clutch sensor B7 to separate or close synchronously or in steps, ensuring that the short-circuit power supply system achieves the purpose of rapid balance and energy saving.

[0027] The working principle and working process of the present invention are as follows:

[0028] like Figure 1 As shown, in order to quickly reduce the loss of the short-grid power supply system and adjust the balance of the system, the present invention adopts a set of brake motor drive system and sensor system comprehensive control, so that the two short-grid power supply bodies, the electrode 9 and the conductive arm 10, can automatically operate synchronously or asynchronously according to the working conditions, thereby reducing the system adjustment process and quickly achieving the purpose of system balance. When the system starts to work, it drives the active motor and the digital reducer 1 to work, and drives the active reversing sector gear 2 to rotate, so that the active reversing sector gear 2 drives the driven reversing sector gear A3 and the driven reversing sector gear B6 to rotate; the system controller 12 receives the production system instruction, and controls the attraction and disconnection state of the driven electromagnetic clutch sensor A4 and the driven electromagnetic clutch sensor B7 according to the production needs and working conditions, and collects the state of each rotary digital collector (rotary digital collector A13, rotary digital collector B14) at the same time, so as to grasp the operation state of each transmission system in time, to determine whether the driven reversing sector gear A3 and the driven reversing sector gear B6 drive the lifting electrode drum 5 and the lifting conductive boom drum 8 to rotate, and to judge whether the system fails, etc.; the system controller 12 determines whether the lifting electrode drum 5 and the lifting conductive boom drum 8 are running forward or reverse, and whether the electrode 9 and the conductive boom 10 are running synchronously or asynchronously. The system synchronizes the control and regulation of the various parts of the entire electrode 9 and conductive arm 10 transmission system, sets information collection points at key locations where asynchrony is likely to occur, collects the operating status of the node in real time, and performs regulation and control.

[0029] The results show that the present invention integrates the driving and control systems of the lifting electrode and the lifting conductive boom, reduces one set of driving systems, not only saves energy, but also improves the synchronization of the two systems and quickly achieves system balance. The present invention only uses one set of brake motor drive system to achieve intelligent control of the short-grid power supply of the electrode and the conductive boom in suitable working conditions, reduces the loss of the short-grid power supply system, achieves rapid system balance, and greatly improves the energy-saving effect and automation level.

Claims

1. An ultra-short network synchronous / asynchronous working condition-adaptive automatic control device for an electric melting furnace, characterized in that: The device's brake motor drives the digital reducer and the active reversing sector gear to rotate. The active reversing sector gear is connected to two driven reversing sector gears, and causes the driven reversing sector gears to reversing and rotating respectively. Each driven reversing sector gear is in contact with a driven electromagnetic clutch sensor respectively. One driven electromagnetic clutch sensor is connected to the lifting electrode drum, and the steel wire rope is wound around the lifting electrode drum through a pulley and connected to the electrode. Another driven electromagnetic clutch sensor is connected to the lifting conductive boom drum, and the steel wire rope is wound around the lifting conductive boom drum through a pulley and connected to the conductive boom. Two rotary digital collectors and a hydraulic workstation are connected to the system controller. The device includes: an active motor and a digital reducer, an active reversing sector gear, a driven reversing sector gear A, a driven electromagnetic clutch sensor A, a lifting electrode drum, a driven reversing sector gear B, a driven electromagnetic clutch sensor B, a lifting conductive boom drum, an electrode, a conductive boom, an electrode holder, a rotary digital collector A, and a rotary digital collector B. The specific structure is as follows: The output end of the active motor and the digital reducer is vertically equipped with an active reversing sector gear, which is driven by the active motor and the digital reducer to rotate in a positive or reverse direction; the upper and lower ends of the active reversing sector gear are respectively meshed with the driven reversing sector gear A and the driven reversing sector gear B, and the driven reversing sector gear A and the driven reversing sector gear B are reversed and rotated by the active reversing sector gear; A driven electromagnetic clutch sensor A, a lifting electrode drum and a rotary digital collector A are sequentially arranged on the top of the gear shaft A of the driven reversing sector rotating gear A. The gear shaft A of the driven reversing sector rotating gear A is in contact with the driven electromagnetic clutch sensor A. The rotary digital collector A and the driven electromagnetic clutch sensor A are respectively connected to the upper and lower ends of the lifting electrode drum; a steel wire rope A is connected to the pulley A in a transmission manner, one end of the steel wire rope A is wrapped around the lifting electrode drum, and the other end of the steel wire rope A is connected to the vertically arranged electrode; A driven electromagnetic clutch sensor B, a lifting conductive boom roller and a rotary digital collector B are arranged in sequence at the bottom of the gear shaft B of the driven reversing sector rotating gear B. The gear shaft B of the driven reversing sector rotating gear B is in contact with the driven electromagnetic clutch sensor B. The rotary digital collector B and the driven electromagnetic clutch sensor B are respectively connected to the upper and lower ends of the lifting conductive boom roller; a steel wire rope B is connected to the pulley B in transmission, one end of the steel wire rope B is wrapped around the lifting conductive boom roller, and the other end of the steel wire rope B is connected to the conductive boom. An electrode clamp is arranged at the bottom of the conductive boom, one end of the electrode clamp corresponds to the electrode, and the other end of the electrode clamp is connected to the hydraulic workstation, and the hydraulic workstation drives the electrode clamp to clamp or release the electrode.

2. The electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device according to claim 1 is characterized in that: The active motor and the digital reducer include a brake motor and a digital reducer. The digital reducer is installed at the output end of the brake motor. The brake motor drives the digital reducer and the active reversing sector gear to rotate.

3. The electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device according to claim 1 is characterized in that: The system controller is connected with the rotary digital collector A, the driven electromagnetic clutch sensor A, the active motor and the digital reducer, the driven electromagnetic clutch sensor B, the rotary digital collector B, and the hydraulic workstation through lines respectively.

4. The electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device according to claim 3 is characterized in that: The system controller drives the brake motor to operate according to the production control instructions, and drives the motor to operate forward or reverse according to the production conditions.

5. The electric furnace ultra-short network synchronous / asynchronous working condition-adaptive automatic control device according to claim 3 is characterized in that: The system controller is based on an embedded ARM processor, which receives instructions from the production command system, drives the brake motor to operate in appropriate conditions, and adjusts the operating indicators of the drive electrode and conductive arm according to changes in production current and power indicators. When the system needs to be adjusted, the driven electromagnetic clutch sensor A and the electromagnetic clutch sensor B are controlled to separate or close synchronously or in steps to ensure that the short-circuit power supply system achieves rapid balance and energy saving.

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