Three-phase power supply alternating current flash butt welding machine

Abstract

The utility model discloses a three -phase power supply alternating -current flash light butt welder, including fuselage, welding transformer, connecting cable, three -phase electric inverter control cabinet, welder control cabinet, inverter cabinet control screen, welding control cabinet industrial computer and welding ring entrance, inverter cabinet control screen is arranged on three -phase electric inverter control cabinet, welding control cabinet industrial computer is arranged on welder control cabinet, welding transformer is arranged on the fuselage, is equipped with welding ring entrance on the welding transformer, the utility model relates to flash light butt welder technical field has reduced equipment maintenance difficulty, has reduced welder transformer's maintenance cost simultaneously, has reduced the impact of large current to equipment power grid, has reduced the damage that welds equipment to the equipment of power supply system, is more energy -conserving and environmental protection, guarantees the mechanical property of product again, has reduced the production cost of product, and the utility model flash light butt welder has greatly reduced operator's labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of flash butt welding machine technology, and in particular to a three-phase AC transformer flash welding machine. Background Technology

[0002] Currently, most flash butt welding machines use 380VAC two-phase transformers, but the incoming power supply is usually 380VAC three-phase. They typically use two 380VAC phases to control dual thyristors, employing thyristors and their control modules to control the transformer's secondary voltage and thus regulate the output current. However, this two-phase 380VAC control method, which only controls two phases of the three-phase power supply, can lead to imbalances in the three-phase power supply, causing the center point to shift and voltage imbalances in one phase. This can damage other electrical equipment, components, and cause instability in the operation and product quality of other equipment within the same power supply system. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a three-phase AC flash butt welding machine, which solves the problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses a three-phase AC flash butt welding machine, comprising a machine body, a welding transformer, a connecting cable, a three-phase power inverter control cabinet, a welding machine control cabinet, an inverter cabinet control screen, a welding control cabinet industrial computer, and a welding ring inlet. The inverter cabinet control screen is mounted on the three-phase power inverter control cabinet, the welding control cabinet industrial computer is mounted on the welding machine control cabinet, and the welding transformer is mounted on the machine body. The welding transformer is provided with a welding ring inlet.

[0006] The three-phase inverter control cabinet converts the power to two-phase 380VAC via inverter and connects to the welding transformer via connecting cables. The three-phase 380VAC power output from the industrial control computer of the welding control cabinet is connected to the three-phase inverter control cabinet via cables.

[0007] Preferably, the welding transformer has a two-phase 380VAC input line.

[0008] Preferably, the inverter power controller of the three-phase inverter control cabinet converts the three-phase 380VAC power supply into a two-phase 380VAC power supply and transmits it to the welding transformer. The three-phase inverter control cabinet controls the secondary voltage and thus controls the voltage change of the welding transformer.

[0009] Preferably, the welding transformer is controlled by the secondary voltage terminal through this controller, thereby enabling the welding transformer to achieve multi-stage free control.

[0010] The beneficial effects achieved by this utility model are as follows: This flash butt welding machine simplifies the complex structure and workflow of existing welding machine transformer adjustment, improves productivity, reduces equipment maintenance difficulty, simplifies various parameters that need to be adjusted during welding, eliminates many parameters of the thyristor control board in the control process, and also ensures the balance and stability of the equipment in the power system. This ensures the mechanical performance of the product and reduces the production cost of the product. Furthermore, this flash butt welding machine uses automated machinery to replace manual operation of the product, which greatly reduces the labor intensity of the operator. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a structural schematic diagram of a three-phase AC flash butt welding machine according to the present invention.

[0013] In the diagram: 1. Machine body; 2. Transformer; 3. Connecting cable; 4. Three-phase inverter control cabinet; 5. Welding machine control cabinet; 6. Inverter cabinet control screen; 7. Welding control cabinet industrial computer; 8. Welding ring inlet. Detailed Implementation

[0014] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0015] Example:

[0016] like Figure 1 As shown, this utility model provides a three-phase flash welding machine, including a machine body 1, a welding transformer 2, a connecting cable 3, a three-phase inverter control cabinet 4, a welding machine control cabinet 5, an inverter cabinet control screen 6, a welding control cabinet industrial computer 7, and a welding ring inlet 8. The inverter cabinet control cabinet 4 has its control screen 6 attached to its door. The welding control cabinet industrial computer 7 has a welding machine control industrial computer system attached. The welding control cabinet industrial computer 7 outputs three-phase 380VAC power to the three-phase inverter control cabinet 4 via the connecting cable 3. The three-phase inverter control cabinet 4 converts the power into two-phase 380VAC power, which is then connected to the welding transformer 2 via the connecting cable 3. The inverter cabinet control screen 6 allows for segmented voltage control of the flash welding machine, and the welding control section industrial computer can adjust other parameters of the welding process.

[0017] The chain link to be welded is placed through the welding ring inlet 8 and clamped by the clamping heads on both sides and the upper electrode. After clamping is completed, the welding command is issued and welding begins. The set voltage is output through the three-phase power inverter control cabinet 4, and the secondary high current is output through the welding transformer 2 to weld the chain link. The PLC in the welding machine control cabinet 5 controls the various valves on the equipment to control the machine body movement through the control program, and controls the welding voltage at different stages to complete the welding process.

[0018] Specifically, when using this utility model, the welding program is started, the chain link or chain to be welded is placed, the left and right clamps are clamped, and the upper electrode on both sides needs to be lowered to clamp the chain link to be welded up and down and back and forth. After clamping in place, welding is started. According to different welding stages, the voltage is adjusted and controlled in three stages: preheating, flashing, and forging, thereby controlling the output current. The forward and backward movement of the welding machine is controlled by the current sensing control, thereby achieving welding of the chain link. After the flashing process ends, the forging cylinder is used to forge the welding ring. The strong forging force can forge the welding chain link, squeezing out the impurities and air generated in the welding process, forming welding burrs. After the forging waiting time ends, the welding ring is deburred. After deburring, all clamping devices return to their original positions, and the welding process ends. After using the inverter power controller, this process will not cause any damage to the three-phase power supply, nor will it cause imbalance or damage to other equipment, ensuring the normal operation of the equipment and ensuring the quality of the produced products. The equipment is not easily damaged.

[0019] It should be noted that the power supply can be balanced by the inverter power controller of the three-phase inverter control cabinet 4, so that the three-phase 380VAC power supply is converted into two-phase 380VAC power supply in a balanced manner, thereby realizing the control of the welding transformer 2. The welding transformer 2 can be controlled by adjusting the inverter power controller of the three-phase inverter control cabinet 4. Moreover, during the conversion process, by controlling the conversion of the three-phase power supply to the two-phase 380VAC transformer, the voltage at the input end is balanced and stabilized, and the voltage at the output end is also controlled.

[0020] The inverter power controller of the three-phase inverter control cabinet 4 can control the welding transformer 2 through the screen.

[0021] The control cabinet can perform segmented control of the inverter power controller of the three-phase inverter control cabinet 4 itself.

[0022] The control cabinet can not only perform segmented control of the inverter power controller of the three-phase inverter control cabinet 4 itself, but also perform time or voltage rise and fall control on the inverter power controller of the three-phase inverter control cabinet 4 itself.

[0023] The flash butt welding machine, through the production of this welding transformer 2, can achieve excellent connection and welding.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A three-phase AC flash butt welding machine, characterized in that, The system includes a machine body (1), a welding transformer (2), a connecting cable (3), a three-phase inverter control cabinet (4), a welding machine control cabinet (5), an inverter cabinet control screen (6), a welding control cabinet industrial computer (7), and a welding ring inlet (8). The inverter cabinet control screen (6) is mounted on the three-phase inverter control cabinet (4), the welding control cabinet industrial computer (7) is mounted on the welding machine control cabinet (5), the welding transformer (2) is mounted on the machine body (1), and the welding transformer (2) is provided with a welding ring inlet (8). The three-phase inverter control cabinet (4) is converted into two-phase 380VAC power and connected to the welding transformer (2) via a connecting cable (3). The three-phase 380VAC power output of the industrial control computer (7) of the welding control cabinet is connected to the three-phase inverter control cabinet (4) via a connecting cable (3).

2. A three-phase AC flash butt welding machine according to claim 1, characterized in that, The welding transformer (2) has a two-phase 380VAC input line.

3. A three-phase AC flash butt welding machine according to claim 1, characterized in that, The inverter power controller of the three-phase inverter control cabinet (4) converts the three-phase 380VAC power supply into a two-phase 380VAC power supply and sends it to the welding transformer (2). The three-phase inverter control cabinet (4) controls the secondary voltage and thus controls the voltage change of the welding transformer (2).

4. A three-phase AC flash butt welding machine according to claim 2, characterized in that, The welding transformer (2) is controlled by the secondary voltage terminal through the three-phase inverter control cabinet, thereby enabling the welding transformer (2) to be freely controlled in multiple stages.

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