Multi-output integrated plasma torch power supply

Abstract

The utility model discloses a multipath output integrated plasma torch power supply, comprising a 380VAC power supply input 1000, an input power supply soft start loop 100, a three-phase industrial frequency transformer 200, a rectification filter circuit 300, an IGBT full bridge circuit 400, an air core inductance circuit 500 and an output sampling circuit 600, and the 380VAC power supply input 1000 is connected with the three-phase industrial frequency transformer 200 through the input power supply soft start loop 100. According to the multi-output integrated plasma torch power supply, 380V AC power supply input is converted into a plasma torch power supply with the voltage of 300V and the current of 250A through an IGBT full-bridge circuit, a three-phase industrial frequency transformer and a rectification filter circuit; the plasma power supply forms plasma electric arcs in a high-frequency arcing or contact arcing mode to supply energy to the torch, and the electric arcs are used for generating focused plasma jet flow which is used in the fields of power plant boiler ignition, solid waste treatment, plasma melting and smelting and the like. The system is high in control speed, high in precision, safe, reliable, low in cost, high in power and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of plasma torch power supply technology, specifically a multi-output integrated plasma torch power supply. Background Technology

[0002] The plasma torch DC power supply series adopts the existing mature PDM rectifier chopper power supply module design, which can meet the technical specifications of plasma torch loads, with an efficiency of up to 93% at full power. This power supply features small size, high efficiency, fast feedback control speed, low noise, and convenient maintenance, and has comprehensive protection functions to ensure long-term stable operation.

[0003] Plasma power supplies generate plasma arcs to power torches through high-frequency or contact arc ignition. They utilize the arcs to produce focused plasma jets for applications such as power plant boiler ignition, solid waste treatment, and plasma melting and smelting. These power supplies offer fast control, high precision, safety, reliability, low cost, high power output, and ease of use.

[0004] Existing plasma torch DC power supplies with single-channel output are suitable for applications that require only a single voltage supply. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a multi-output integrated plasma torch power supply, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-output integrated plasma torch power supply, comprising a 380VAC power input, an input power soft-start circuit, a three-phase power frequency transformer, a rectifier and filter circuit, an IGBT full-bridge circuit, an air-core inductor circuit, and an output sampling circuit. The 380VAC power input is connected to the three-phase power frequency transformer via the input power soft-start circuit. The three-phase power frequency transformer is connected to the three-phase rectifier and filter circuit. The rectifier and filter circuit is connected to the IGBT full-bridge circuit. The IGBT full-bridge circuit is connected to the input terminal of the air-core inductor circuit. The output terminal of the air-core inductor circuit is connected to the output sampling circuit.

[0007] Preferably, the output sampling circuit outputs three channels, each with a voltage of 300V and a current of 250A.

[0008] Preferably, the multi-output integrated plasma torch power supply includes a local control circuit, a local display circuit, and a remote control and display circuit.

[0009] Preferably, the three-phase rectifier filter circuit has a filter unit inside.

[0010] Preferably, the multi-output integrated plasma torch power supply also includes a power supply housing, with multiple doors rotatably connected to the front surface of the power supply housing, multiple forklift holes opened at the bottom of the front surface of the power supply housing, and a lifting ring fixed to the top of the power supply housing.

[0011] Preferably, a power panel is fixed to the front surface of the left side of the door body. The power panel includes a real-time power status indicator light, a local power emergency stop button, and a touch screen.

[0012] Preferably, the multi-output integrated plasma torch power supply includes an alarm and a temperature sensor. The alarm is fixed on the front surface of the power supply housing, and the temperature sensor is fixed inside the power supply housing.

[0013] Beneficial effects

[0014] This invention provides a multi-output integrated plasma torch power supply. Compared with the prior art, it has the following advantages:

[0015] This multi-output integrated plasma torch power supply converts the 380VAC power input into a 300V, 250A plasma torch power supply through an IGBT full-bridge circuit, a three-phase power frequency transformer, and a rectifier and filter circuit. The plasma power supply generates a plasma arc to power the torch through high-frequency arc ignition or contact arc ignition, and uses the arc to generate a focused plasma jet for applications such as power plant boiler ignition, solid waste treatment, and plasma melting and smelting. It features fast control speed, high precision, safety and reliability, low cost, high power, and ease of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the circuit principle of this utility model;

[0017] Figure 2 This is a schematic diagram of the power supply housing of this utility model.

[0018] In the diagram: 100, Input power soft start circuit; 200, Three-phase power frequency transformer; 300, Rectifier and filter circuit; 400, IGBT full-bridge circuit; 500, Air-core inductor circuit; 600, Output sampling circuit; 700, Local control circuit; 800, Local display circuit; 900, Remote control and display circuit; 1000, 380VAC power input; 1100, Temperature sensor; 1200, Alarm; 1300, Power supply housing; 1301, Lifting ring; 1302, Forklift hole; 1303, Door; 1400, Power panel; 1401, Real-time power status indicator light; 1402, Touch screen; 1403, Local power emergency stop button. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2 This utility model provides a technical solution: a multi-output integrated plasma torch power supply, including a 380VAC power input 1000, an input power soft-start circuit 100, a three-phase power frequency transformer 200, a rectifier and filter circuit 300, an IGBT full-bridge circuit 400, an air-core inductor circuit 500, and an output sampling circuit 600. The 380VAC power input 1000 is connected to the three-phase power frequency transformer 200 through the input power soft-start circuit 100. The three-phase power frequency transformer 200 is connected to the three-phase rectifier and filter circuit 300. The rectifier and filter circuit 300 is connected to the IGBT full-bridge circuit 400. The IGBT full-bridge circuit 400 is connected to the input terminal of the air-core inductor circuit 500. The output terminal of the air-core inductor circuit 500 is connected to the output sampling circuit 600.

[0021] Furthermore, the output sampling circuit has three outputs, each with a voltage of 300V and a current of 250A, so that the three outputs are independent and do not affect each other.

[0022] Furthermore, a multi-output integrated plasma torch power supply includes a local control circuit 700, a local display circuit 800, and a remote control and display circuit 900. This allows for real-time monitoring of the power supply status and reading of power supply data, which is convenient and fast. In addition, the control circuit is separated from the high-voltage and low-voltage circuits of the high-voltage section, making it safer.

[0023] Furthermore, the three-phase rectifier and filter circuit 300 has an internal filter unit. Thus, the 380VAC power input 1000 is supplied to the three-phase rectifier and filter circuit 300 through the power input soft start circuit 100. Finally, after being rectified by the filter unit, it is sent to the IGBT full-bridge circuit 400, and after passing through the air-core inductor circuit 500, the current is stabilized and the output is adjustable.

[0024] Furthermore, a multi-output integrated plasma torch power supply also includes a power supply housing 1300. The front surface of the power supply housing 1300 is rotatably connected to multiple doors 1303. Multiple forklift holes 1302 are opened at the bottom of the front surface of the power supply housing 1300. A lifting ring 1301 is fixed to the top of the power supply housing 1300, which facilitates the transportation of the power supply.

[0025] Furthermore, a power panel 1400 is fixed to the front surface of the left door 1303. The power panel 1400 includes a real-time power status indicator light 1401, a local power emergency stop button 1403, and a touch screen 1402. This facilitates the display and control of the DC power supply, enabling the setting of voltage and current, the setting of working mode, the start and stop of the plasma torch power supply, the reading of operating data and faults, and the query of historical data.

[0026] Furthermore, a multi-output integrated plasma torch power supply includes an alarm 1200 and a temperature sensor 1100. The alarm 1200 is fixed on the front surface of the power supply housing 1300, and the temperature sensor 1100 is fixed inside the power supply housing 1300. In this way, the power supply temperature will automatically alarm immediately if it exceeds the set value, reducing potential circuit safety hazards.

[0027] During operation, the 380VAC power input is converted into a 300V, 250A plasma torch power supply through an IGBT full-bridge circuit 400, a three-phase power frequency transformer 200, and a rectifier and filter circuit 300. The plasma power supply generates a plasma arc to power the torch through high-frequency arc ignition or contact arc ignition. The arc generates a focused plasma jet, which is used in power plant boiler ignition, solid waste treatment, plasma melting and smelting, and other fields. It features fast control speed, high precision, safety and reliability, low cost, high power, and ease of use.

[0028] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-output integrated plasma torch power supply, comprising a 380VAC power input (1000), an input power soft-start circuit (100), a three-phase power frequency transformer (200), a rectifier and filter circuit (300), an IGBT full-bridge circuit (400), an air-core inductor circuit (500), and an output sampling circuit (600), characterized in that: The 380VAC power input (1000) is connected to a three-phase power frequency transformer (200) through an input power soft start circuit (100). The three-phase power frequency transformer (200) is connected to a three-phase rectifier and filter circuit (300). The rectifier and filter circuit (300) is connected to an IGBT full-bridge circuit (400). The IGBT full-bridge circuit (400) is connected to the input terminal of an air-core inductor circuit (500). The output terminal of the air-core inductor circuit (500) is connected to an output sampling circuit (600).

2. The multi-output integrated plasma torch power supply according to claim 1, characterized in that: The output sampling circuit (600) outputs three channels, each with a voltage of 300V and a current of 250A.

3. The multi-output integrated plasma torch power supply according to claim 2, characterized in that: The multi-output integrated plasma torch power supply includes a local control circuit (700), a local display circuit (800), and a remote control and display circuit (900).

4. The multi-output integrated plasma torch power supply according to claim 3, characterized in that: The three-phase rectifier filter circuit (300) has a filter unit inside.

5. A multi-output integrated plasma torch power supply according to claim 4, characterized in that: The multi-output integrated plasma torch power supply also includes a power supply housing (1300), with multiple doors (1303) rotatably connected to the front surface of the power supply housing (1300), multiple forklift holes (1302) opened at the bottom of the front surface of the power supply housing (1300), and a lifting ring (1301) fixed to the top of the power supply housing (1300).

6. A multi-output integrated plasma torch power supply according to claim 5, characterized in that: A power panel (1400) is fixed to the front surface of the door body (1303) on the left side. The power panel (1400) includes a real-time power status indicator (1401), a local power emergency stop button (1403), and a touch screen (1402).

7. A multi-output integrated plasma torch power supply according to claim 6, characterized in that: The multi-output integrated plasma torch power supply includes an alarm (1200) and a temperature sensor (1100). The alarm (1200) is fixed on the front surface of the power supply housing (1300), and the temperature sensor (1100) is fixed inside the power supply housing (1300).

Images