A type of power supply

Abstract

This application provides a lead-out power supply, relating to the field of three-phase motor technology. It includes a three-phase power supply, a lead-out circuit, and an output circuit. The lead-out circuit includes a first lead, a second lead, a third lead, and a lead-out node. The outer ends of the first, second, and third lead are all connected to the lead-out node. The inner ends of the first, second, and third lead are sequentially connected to one phase of the three-phase power supply. The outer ends of the first, second, and third lead are all connected to the lead-out node. A first output line is connected to the lead-out node and serves as the neutral line. A second output line is connected to one phase of the three-phase power supply through the third lead, forming a live wire. A 220-volt alternating current is generated between the first and second output lines. Connecting an appliance between the first and second output lines allows it to operate normally without the need for wiring from a distant distribution room, making operation convenient.

Description

Technical Field

[0001] This application belongs to the field of three-phase motor technology, and more specifically, relates to a lead-out power supply. Background Technology

[0002] At the site of electrical equipment, it is often necessary to draw AC220V power for temporary electrical appliances such as on-site lighting, hand-held power stations, and hand-held chainsaws. However, only three-phase power is available at outdoor sites.

[0003] Existing outdoor power supplies have the following main drawbacks: At the site of electrical equipment, it is often necessary to draw out AC220V three-phase power. However, three-phase power cannot be used directly and cannot meet the needs of temporary outdoor use. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a power source. The technical solution adopted in this application is as follows:

[0005] A lead-out power supply includes a three-phase power supply, a lead-out circuit, and an output circuit. The lead-out circuit includes a first lead, a second lead, a third lead, and a lead-out node. The outer ends of the first, second, and third leads are all connected to the lead-out node, and the inner ends of the first, second, and third leads are sequentially connected to one phase of the three-phase power supply. The output circuit includes a first output line and a second output line. The first output line is connected to the lead-out node, and one of the first, second, and third leads is connected to the second output line.

[0006] Preferably, the lead-out circuit further includes a first electrical appliance, a second electrical appliance, and a third electrical appliance, wherein the first electrical appliance is located on the first lead-out line, the second electrical appliance is located on the second lead-out line, and the third electrical appliance is located on the third lead-out line; the first electrical appliance, the second electrical appliance, and the third electrical appliance have the same specifications.

[0007] Preferably, the first electrical appliance, the second electrical appliance, and the third electrical appliance are all lamps.

[0008] Preferably, the first electrical appliance, the second electrical appliance, and the third electrical appliance are all incandescent lamps.

[0009] Preferably, the output circuit further includes a branch circuit breaker, which is used to control whether the first output line and the second output line are simultaneously closed and opened.

[0010] Preferably, the output circuit further includes a third output line, a fourth output line, and a fifth output line, the inner ends of which are sequentially connected to one phase of the three-phase power supply.

[0011] Preferably, the power supply further includes a main control circuit, which includes a first main line, a second main line, a third main line, and a main control circuit breaker. The main control circuit breaker controls whether the first main line, the second main line, and the third main line are disconnected synchronously. The inner ends of the first main line, the second main line, and the third main line are sequentially connected to one phase of the three-phase power supply. The inner ends of the first lead and the third output line are both connected to the outer end of the first main line. The inner ends of the second lead and the fourth output line are both connected to the outer end of the second main line. The inner ends of the third lead and the fifth output line are both connected to the outer end of the third main line.

[0012] Preferably, the main control circuit breaker is a type D circuit breaker.

[0013] The advantages of this utility model are as follows:

[0014] The outer ends of the first, second, and third leads are all connected to the lead-out node. The phase difference of the three-phase power supply is degrees, and a neutral point of three-phase balanced voltage is formed at the lead-out node. The first output line is connected to the lead-out node and serves as the neutral line. The second output line is connected to one phase of the three-phase power supply through the third lead to form the live line. A 220-volt AC current is formed between the first and second output lines. Electrical appliances such as lighting, hand-held power stations, and electric saws can work normally by connecting them between the first and second output lines without the need for wiring from a distant power distribution room, making operation convenient. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the first implementation method for drawing out the power supply;

[0017] Figure 2 This is a schematic diagram of the second implementation method for drawing out the power supply.

[0018] Explanation of symbols in the diagram:

[0019] 1 is a three-phase power supply;

[0020] 2 is the lead-out circuit, 21 is the first lead-out line, 22 is the second lead-out line, 23 is the third lead-out line, 24 is the lead-out node, 25 is the first electrical appliance, 26 is the second electrical appliance, and 27 is the third electrical appliance.

[0021] 3 is the output circuit, 31 is the first output line, 32 is the second output line, 33 is the branch circuit breaker, 34 is the third output line, 35 is the fourth output line, and 36 is the fifth output line.

[0022] 4 is the main control circuit, 41 is the first main line, 42 is the second main line, 43 is the third main line, and 44 is the main control circuit breaker.

[0023] 5 represents the motor. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0025] The power supply provided in the embodiments of this application will now be described.

[0026] Example

[0027] like Figure 1 As shown, a power supply includes a three-phase power supply 1, a lead-out circuit 2, and an output circuit 3. The lead-out circuit 2 includes a first lead-out line 21, a second lead-out line 22, a third lead-out line 23, and a lead-out node 24. The first lead-out line 21, the second lead-out line 22, and the third lead-out line 23 are sequentially arranged between the three-phase power supply 1 and the lead-out node 24. The outer ends of the first lead-out line 21, the second lead-out line 22, and the third lead-out line 23 are all connected to the lead-out node 24, and the inner ends of the first lead-out line 21, the second lead-out line 22, and the third lead-out line 23 are sequentially connected to one phase of the three-phase power supply 1. The output circuit 3 includes a first output line 31 and a second output line 32. The first output line 31 is connected to the lead-out node 24, and the third lead-out line 23 is connected to the second output line 32. Alternatively, connecting either the first lead-out line 21 or the second lead-out line 22 to the second output line 32 can also achieve the same effect.

[0028] The outer ends of the first lead-out line 21, the second lead-out line 22, and the third lead-out line 23 are all connected to the lead-out node 24. The phase difference of the three-phase power supply 1 is 120 degrees. The neutral point of the three-phase balanced voltage is formed at the lead-out node 24. The first output line 31 is connected to the lead-out node 24 and serves as the neutral line. The second output line 32 is connected to one phase of the three-phase power supply 1 through the third lead-out line 23 to form the live wire. A 220-volt AC current is formed between the first output line 31 and the second output line 32. Electrical appliances such as lighting, hand-held power stations, and electric saws can work normally by connecting them between the first output line 31 and the second output line 32 without having to run cables and wiring from a distant power distribution room, making operation convenient.

[0029] like Figure 2As shown, the second implementation of the power supply is basically the same as the first implementation. The similarities will not be repeated. The difference is that the second output line 32 is directly connected to one phase of the three-phase power supply 1. Based on the actual situation of the outdoor site, the second implementation may be easier to install.

[0030] The lead-out circuit 2 also includes a first electrical appliance 25, a second electrical appliance 26, and a third electrical appliance 27. The first electrical appliance 25 is located on the first lead-out line 21, the second electrical appliance 26 is located on the second lead-out line 22, and the third electrical appliance 27 is located on the third lead-out line 23. The first electrical appliance 25, the second electrical appliance 26, and the third electrical appliance 27 have the same specifications and all use electrical appliances with a rated voltage of 220 volts.

[0031] The first electrical appliance 25, the second electrical appliance 26, and the third electrical appliance 27 are sequentially installed on the first lead 21, the second lead 22, and the third lead 23. The first electrical appliance 25, the second electrical appliance 26, and the third electrical appliance 27 are used to protect the first lead 21, the second lead 22, and the third lead 23, respectively, to prevent the first lead 21, the second lead 22, and the third lead 23 from being burned out due to high current.

[0032] The first electrical appliance 25, the second electrical appliance 26, and the third electrical appliance 27 all use lamps. While protecting the circuit, the first electrical appliance 25, the second electrical appliance 26, and the third electrical appliance 27 can also provide lighting and indication.

[0033] In this embodiment, the first electrical appliance 25, the second electrical appliance 26, and the third electrical appliance 27 all use incandescent lamps, which can reduce the cost of use.

[0034] The output circuit 3 also includes a branch circuit breaker 33, which is used to control whether the first output line 31 and the second output line 32 are closed or opened simultaneously, making it easy to operate.

[0035] The output circuit 3 also includes a third output line 34, a fourth output line 35, and a fifth output line 36, the inner ends of which are connected to one phase of the three-phase power supply 1 in sequence.

[0036] The power supply also includes a main control circuit 4, which includes a first main line 41, a second main line 42, a third main line 43, and a main control circuit breaker 44. The main control circuit breaker 44 controls whether the first main line 41, the second main line 42, and the third main line 43 are disconnected synchronously. The inner ends of the first main line 41, the second main line 42, and the third main line 43 are connected to one phase of the three-phase power supply 1 in sequence. The inner ends of the first lead-out line 21 and the third output line 34 are both connected to the outer end of the first main line 41. The inner ends of the second lead-out line 22 and the fourth output line 35 are both connected to the outer end of the second main line 42. The inner ends of the third lead-out line 23 and the fifth output line 36 are both connected to the outer end of the third main line 43.

[0037] The main control circuit breaker 44 adopts a type D circuit breaker, which can avoid the effect of large current when electrical appliances are started, thus preventing tripping.

[0038] In this embodiment, the third output line 34, the fourth output line 35 and the fifth output line 36 are connected to a three-phase motor 5. The main control circuit breaker 44 is located on the main line. The first main line 41, the second main line 42 and the third main line 43 are disconnected at the same time, and the output circuit 3 is completely de-energized. When connecting or adjusting the circuit, the line is disconnected through the main control circuit breaker 44, which is convenient to operate.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lead-out power supply, comprising a three-phase power supply, a lead-out circuit, and an output circuit, characterized in that: The lead-out circuit includes a first lead-out line, a second lead-out line, a third lead-out line, and a lead-out node. The outer ends of the first lead-out line, the second lead-out line, and the third lead-out line are all connected to the lead-out node. The inner ends of the first lead-out line, the second lead-out line, and the third lead-out line are sequentially connected to one phase of the three-phase power supply. The output circuit includes a first output line and a second output line. The first output line is connected to the lead-out node. One of the first lead-out line, the second lead-out line, and the third lead-out line is connected to the second output line.

2. The power supply according to claim 1, characterized in that: The lead-out circuit further includes a first electrical appliance, a second electrical appliance, and a third electrical appliance. The first electrical appliance is located on the first lead-out line, the second electrical appliance is located on the second lead-out line, and the third electrical appliance is located on the third lead-out line. The first electrical appliance, the second electrical appliance, and the third electrical appliance have the same specifications.

3. The power supply according to claim 2, characterized in that: The first electrical appliance, the second electrical appliance, and the third electrical appliance are all lamps.

4. The power supply according to claim 3, characterized in that: The first electrical appliance, the second electrical appliance, and the third electrical appliance are all incandescent lamps.

5. The power supply according to any one of claims 1 to 4, characterized in that: The output circuit also includes a branch circuit breaker, which is used to control whether the first output line and the second output line are simultaneously closed and opened.

6. The power supply according to any one of claims 1 to 4, characterized in that: The output circuit further includes a third output line, a fourth output line, and a fifth output line, the inner ends of which are sequentially connected to one phase of the three-phase power supply.

7. The power supply according to claim 6, characterized in that: It also includes a master control circuit, which includes a first main line, a second main line, a third main line, and a master control circuit breaker. The master control circuit breaker controls whether the first main line, the second main line, and the third main line are simultaneously disconnected. The inner ends of the first main line, the second main line, and the third main line are sequentially connected to one phase of the three-phase power supply. The inner ends of the first lead and the third output line are both connected to the outer end of the first main line. The inner ends of the second lead and the fourth output line are both connected to the outer end of the second main line. The inner ends of the third lead and the fifth output line are both connected to the outer end of the third main line.

8. The power supply according to claim 7, characterized in that: The main control circuit breaker is a type D circuit breaker.

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