Multi-stage conversion double-control type test room power distribution system

Abstract

The utility model discloses a multi-stage conversion double-control type test room power distribution system. The multi-stage conversion double-control type test room power distribution system comprises an input module, an isolation transformer module and a secondary power distribution unit, the secondary power distribution unit is respectively connected with a 220V alternating current output loop and a 24V direct current power supply module; the 24V direct-current power supply module is connected with a double-control indication loop; the input module is used for dividing input 380V three-phase alternating current into two paths, one path is output to the isolation transformer module, and the other path is connected with a 380V output main loop; the isolation transformer module is used for converting 380V three-phase alternating current received from the input module into two paths of 220V alternating current, and step-by-step transformation and electrical isolation from the 380V three-phase alternating current to the 220V alternating current and from the 220V alternating current to the 24V direct current are realized by arranging the isolation transformer module; interference and electric shock risks are reduced, system safety is enhanced, electromagnetic interference is reduced, and the technical problem that in the prior art, power supply equipment cannot provide different voltages at the same time is solved.

Description

Technical Field

[0001] This utility model belongs to the field of product testing equipment and relates to a power distribution system, specifically a multi-stage conversion dual-control type test chamber power distribution system. Background Technology

[0002] Testing is an indispensable part of the product development cycle. To verify product performance and improve product reliability, extensive testing is necessary to obtain sufficient experimental data to support our findings. Reliable testing equipment is the foundation for our testing. As products become increasingly electrified and intelligent, the testing requirements are also rising, leading to more complex testing equipment. Electrical equipment at various voltage levels is ubiquitous, such as 380V motors, fans, cooling fans, and oil circulation systems; various 220V auxiliary equipment; 24V and 12V controllers; and various types of external measuring sensors. As a result, the testing site is often cluttered with tangled wires, creating a messy and potentially dangerous environment.

[0003] To solve the above problems, it is urgent to design a multi-stage conversion dual-control power distribution system for the test chamber. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-stage conversion dual-control power distribution system for test rooms, so as to solve the technical problem that power supply equipment in the existing technology cannot provide different voltages at the same time.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A multi-stage conversion dual-control power distribution system for a test chamber includes an input module, an isolation transformer module, and a secondary power distribution unit connected in sequence; the secondary power distribution unit is respectively connected to a 220V AC output circuit and a 24V DC power supply module; the 24V DC power supply module is connected to a dual-control indicator circuit.

[0007] The input module is used to split the input 380V three-phase AC power into two paths: one path is output to the isolation transformer module, and the other path is connected to the 380V output main circuit.

[0008] The isolation transformer module is used to convert the 380V three-phase AC power received from the input module into two 220V AC power supplies and distribute them to the secondary power distribution unit.

[0009] The secondary power distribution unit is used to distribute one 220V AC power to a 220V AC output circuit, which is connected to a dual-control indicator circuit. It also distributes another 220V AC power to a 24V DC power module, which converts the 220V AC power into two 24V DC power sources, one of which is connected to the dual-control indicator circuit and the other is connected to the 24V main output circuit.

[0010] The dual-control indicator circuit is used to control whether the 380V output main circuit, the 220V AC output circuit, and the 24V output main circuit output, as well as to determine their output status.

[0011] This utility model includes the following technical features:

[0012] The isolation transformer module includes an isolation transformer T1, a circuit breaker QF3, and an AC terminal block connected in sequence.

[0013] The isolation transformer T1 is used to convert the 380V three-phase AC power received from the input module into two 220V AC power streams.

[0014] The circuit breaker QF3 is used to limit the power output of the secondary power distribution unit and protect the isolation transformer T1 from burning out due to excessive output power.

[0015] The AC terminal block is used to connect external electrical equipment.

[0016] The 380V output main circuit, 220V AC output circuit and 24V output main circuit are all equipped with safety protection modules. The safety protection modules include a circuit breaker, a thermal relay, an isolation transformer and a grounding unit connected in sequence.

[0017] The input module includes a main circuit breaker.

[0018] Compared with the prior art, the beneficial technical effects of this utility model are:

[0019] (I) By setting up an isolation transformer module, this utility model realizes the step-by-step transformation and electrical isolation of 380V three-phase AC to 220V AC and 220V AC to 24V DC; it reduces interference and electric shock risk, enhances system safety, reduces electromagnetic interference, and solves the technical problem that power supply equipment cannot provide different voltages at the same time in the prior art.

[0020] (II) The dual-control indicator circuit in this utility model can control the local / remote control output of each level of output voltage, ensuring that the failure of a single control does not affect the entire power distribution system, thus improving operational flexibility and emergency response capability. In addition, of the two 24V DC power outputs from the 24V DC power module, one is dedicated to the dual-control indicator circuit, and the other is used as the control output of the 24V output main circuit, separating the internal power supply of the system from the power supply of external equipment, thus avoiding the impact of load fluctuations on system stability.

[0021] (III) In this utility model, the main output circuits of 380V, 220V and 24V are all installed with rails, and the output power supply can be changed according to actual needs, and the number of output channels can be increased as needed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the system structure of this utility model;

[0023] Figure 2 for Figure 1 The circuit diagram of the isolation transformer module.

[0024] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, all components in this utility model are components known in the art.

[0026] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0027] This utility model provides a multi-stage conversion dual-control power distribution system for a test chamber, including an input module, an isolation transformer module, and a secondary power distribution unit connected in sequence; the secondary power distribution unit is respectively connected to a 220V AC output circuit and a 24V DC power supply module; the 24V DC power supply module is connected to a dual-control indicator circuit;

[0028] The input module is used to split the input 380V three-phase AC power into two paths: one path is output to the isolation transformer module, and the other path is connected to the 380V output main circuit.

[0029] The isolation transformer module is used to convert the 380V three-phase AC power received from the input module into two 220V AC power supplies and distribute them to the secondary power distribution unit.

[0030] The secondary power distribution unit is used to distribute one 220V AC power to a 220V AC output circuit, which is connected to a dual-control indicator circuit. It also distributes another 220V AC power to a 24V DC power module. The 24V DC power module converts the 220V AC power into two 24V DC power sources, one of which is connected to the dual-control indicator circuit and the other is connected to the 24V main output circuit.

[0031] The dual-control indicator circuit is used to control whether the 380V output main circuit, the 220V AC output circuit, and the 24V output main circuit output, as well as to determine their output status.

[0032] In the above technical solution, by setting up an isolation transformer module, the 380V three-phase AC to 220V AC power and the 220V AC power to 24V DC power are transformed and electrically isolated in stages; this reduces interference and electric shock risk, enhances system safety, reduces electromagnetic interference, and solves the technical problem that power supply equipment cannot provide different voltages at the same time in the prior art.

[0033] The dual-control indicator circuit can control the local / remote control output of each level of output voltage, ensuring that the failure of a single control does not affect the entire power distribution system, thus improving operational flexibility and emergency response capabilities. In addition, of the two 24V DC power outputs from the 24V DC power module, one is dedicated to the dual-control indicator circuit, and the other is used as the control output of the 24V output main circuit, separating the internal power supply of the system from the power supply of external equipment, thus avoiding the impact of load fluctuations on system stability.

[0034] The 380V, 220V and 24V output main circuits are all mounted on DIN rails, and the output power supply can be changed according to actual needs, and the number of output channels can be increased as needed.

[0035] The isolation transformer module includes an isolation transformer T1, a circuit breaker QF3, and an AC terminal block connected in sequence;

[0036] The isolation transformer T1 is used to convert the 380V three-phase AC power received from the input module into two 220V AC power streams.

[0037] Circuit breaker QF3 is used to limit the power output of the secondary power distribution unit and protect the isolation transformer T1 from burning out due to excessive output power;

[0038] AC terminal blocks are used to connect external electrical equipment.

[0039] In the above technical solution, there is no direct electrical connection between the primary and secondary windings of the isolation transformer; instead, energy is transferred through a magnetic field. When an alternating voltage is applied to the primary winding, an alternating magnetic field is generated. This magnetic field induces an electromotive force in the secondary winding, thereby generating an output voltage across the secondary winding. This allows electrical energy to be transferred from the primary side to the secondary side, while simultaneously achieving electrical isolation between the primary and secondary windings. The primary and secondary windings of the isolation transformer are isolated using high-quality insulating materials, capable of withstanding high voltages without breakdown, further ensuring that there is no direct current path between the primary and secondary windings and enhancing the isolation effect.

[0040] Safety protection modules are provided for the 380V output main circuit, the 220V AC output circuit, and the 24V output main circuit. The safety protection modules include a circuit breaker, a thermal relay, an isolation transformer, and a grounding unit connected in sequence.

[0041] In the above technical solution, circuit breakers are installed in the 380V output main circuit, the 220V AC output circuit, and the 24V output main circuit to ensure the electrical safety of each output circuit. A thermal relay is installed in the 380V output main circuit to provide dual protection for this circuit. An isolation transformer is provided to achieve electrical isolation, improving electrical safety and signal transmission quality within the system. A dedicated grounding terminal block is installed within the system to provide grounding protection for the electrical equipment.

[0042] The input module includes the main circuit breaker.

Claims

1. A multi-level conversion dual-control test cell power distribution system, characterized by, It includes an input module, an isolation transformer module, and a secondary power distribution unit connected in sequence; the secondary power distribution unit is respectively connected to a 220V AC output circuit and a 24V DC power supply module; the 24V DC power supply module is connected to a dual-control indicator circuit; The input module is used to split the input 380V three-phase AC power into two paths: one path is output to the isolation transformer module, and the other path is connected to the 380V output main circuit. The isolation transformer module is used to convert the 380V three-phase AC power received from the input module into two 220V AC power supplies and distribute them to the secondary power distribution unit. The secondary power distribution unit is used to distribute one 220V AC power to a 220V AC output circuit, which is connected to a dual-control indicator circuit. It also distributes another 220V AC power to a 24V DC power module, which converts the 220V AC power into two 24V DC power sources, one of which is connected to the dual-control indicator circuit and the other is connected to the 24V main output circuit. The dual-control indicator circuit is used to control whether the 380V output main circuit, the 220V AC output circuit, and the 24V output main circuit output, as well as to determine their output status.

2. The multi-level conversion dual-control test cell power distribution system of claim 1, wherein, The isolation transformer module includes an isolation transformer T1, a circuit breaker QF3, and an AC terminal block connected in sequence. The isolation transformer T1 is used to convert the 380V three-phase AC power received from the input module into two 220V AC power streams. The circuit breaker QF3 is used to limit the power output of the secondary power distribution unit and protect the isolation transformer T1 from burning out due to excessive output power. The AC terminal block is used to connect external electrical equipment.

3. The multi-level conversion dual-control test cell power distribution system of claim 1, wherein, The 380V output main circuit, 220V AC output circuit and 24V output main circuit are all equipped with safety protection modules. The safety protection modules include a circuit breaker, a thermal relay, an isolation transformer and a grounding unit connected in sequence.

4. The multi-level conversion dual-control test cell power distribution system of claim 1, wherein, The input module includes a main circuit breaker.

Images