Direct-current positive and negative commutation device with double reverse star structures

Abstract

The utility model relates to the field of power supply modules, and discloses a direct-current positive and negative commutation device with a double reverse star structure, which comprises a double reverse star transformer, water-cooled rows, a positive joint and a negative joint, the double reverse star transformer is provided with six copper bars, the six groups of water-cooled rows are connected with the corresponding copper bars through the copper bars, and the positive joint is connected with the negative joint through the water-cooled rows. The ends, away from the double-reverse-star transformer, of the six sets of water-cooling rows are connected to the positive electrode connector in parallel, the double-reverse-star transformer is connected with the negative electrode connector, and thyristors, water nozzle water pipes, circuit boards and thermal switches are installed on the water-cooling rows. According to the utility model, by arranging the double reverse star transformers, the stability of output current and voltage can be improved, and positive and negative commutation of a direct current power supply is realized by matching with the water-cooled bar, so that the structure of the commutation device is simplified, and the heat dissipation effect can be ensured by utilizing the water-cooled bar, thereby reducing the failure rate of components.

Description

Technical Field

[0001] The utility model relates to the field of power supply modules, in particular to a direct current positive and negative phase switching device with a double reverse star structure. Background Art

[0002] In the use of DC power supply modules, it is necessary to switch between positive and negative currents, that is, to realize the forward and reverse rotation of the DC motor. The main methods are: 1. Mechanical switch control, which is realized by double-pole double-throw switch, but it cannot be fully automated; 2. Transistor control, specifically by controlling the high and low levels of the input port to control the on and off of the transistor to change the positive and negative pole connections of the motor. This method requires a complex control system, which increases the cost and maintenance difficulty of the equipment; 3. Changing the polarity of the excitation winding or the armature winding, specifically through the commutator, excitation winding, and armature winding of the DC motor itself. This method requires a stable operating environment, and there will be some problems when the current is interrupted or the voltage is converted. Therefore, a positive and negative phase-changing device with a simple structure and easy maintenance is needed. Utility Model Content

[0003] The utility model aims to solve the problems in the background technology and provides a direct current positive and negative phase switching device with a double reverse star structure.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A double reverse star structure direct current positive and negative phase switching device comprises a double reverse star transformer, a water cooling row, a positive pole connector and a negative pole connector. The double reverse star transformer is provided with six copper bars, six groups of the water cooling rows are connected with corresponding copper bars through the copper bars, one end of the six groups of the water cooling rows away from the double reverse star transformer is connected in parallel to the positive pole connector, the double reverse star transformer is connected to the negative pole connector, thyristors, water nozzles and water pipes, circuit boards and thermal switches are installed on the water cooling row, each group of the water cooling rows has two, each water cooling row is processed with two flow channels, the flow channels at one end of the two water cooling rows are connected through the water nozzles and water pipes, the two thyristors are sequentially installed between the two water cooling rows through insulating parts, the end of one water cooling row is connected to the positive pole connector, the end of the other water cooling row is installed with a circuit board, and the side wall of the water cooling row with the circuit board installed is installed with a thermal switch.

[0006] A fast-melt joint connected to the copper bar is installed on the water cooling bar below the thermal switch.

[0007] The double reverse star structure DC positive and negative phase switching device provided by the utility model has the following beneficial effects:

[0008] (1) By setting up a double reverse star transformer, the stability of the output current and voltage can be improved, and the positive and negative phase switching of the DC power supply can be realized by cooperating with the water cooling row, that is, the structure of the phase switching device is simplified, and the water cooling row can be used to ensure the heat dissipation effect, thereby reducing the failure rate of components;

[0009] (2) Compact layout, easy disassembly and assembly, and space saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A schematic structural diagram of an embodiment of the utility model is provided.

[0012] Figure 2 The front view provided for the embodiment of the utility model.

[0013] Figure 3 A side view provided for an embodiment of the utility model.

[0014] Figure 4 A schematic diagram of the structure of a water cooling radiator provided in an embodiment of the utility model.

[0015] Figure 5 A side view of a water cooling radiator provided in an embodiment of the utility model.

[0016] Figure numerals: 1. double reverse star transformer; 2. water cooling radiator; 3. positive pole connector; 4. negative pole connector; 5. copper busbar; 6. thyristor; 7. water nozzle and water pipe; 8. circuit board; 9. thermal switch; 10. hot melt connector; 11. insulating part. DETAILED DESCRIPTION

[0017] Example

[0018] like Figures 1 to 5As shown, the present embodiment provides a double reverse star transformer 1, a water cooling row 2, a positive electrode connector 3 and a negative electrode connector 4. The double reverse star transformer 1 is a power transformer based on a double reverse star winding and a magnetic core, also known as a three-phase six-wire transformer. Compared with the existing transformer, it has higher energy conversion efficiency and more stable output. The double reverse star transformer 1 is provided with six copper bars 5, and six groups of the water cooling row 2 are connected to the corresponding copper bars 5 through the copper bars 5. One end of the six groups of the water cooling row 2 away from the double reverse star transformer 1 is connected in parallel to the positive electrode connector 3, and the positive electrode connector 3 has two channels. The double reverse star transformer 1 is connected to the negative electrode connector 4, and the water cooling row 2 is installed with a thyristor 6, a water nozzle water pipe 7, and an electric Circuit board 8 and thermal switch 9, each group of water-cooling row 2 has two, each water-cooling row 2 is processed with two flow channels, the flow channels at one end of the two water-cooling row 2 are connected through a water nozzle water pipe 7, when connected, the end of one water-cooling row 2 is fixed to the positive terminal 3 by bolts, the two thyristors 6 are sequentially installed between the two water-cooling row 2 through an insulating member 11, the installation directions of the two thyristors 6 are opposite, a circuit board 8 is installed at the end of the other water-cooling row 2, the circuit board 8 is an RC circuit, the RC circuit provides a control signal for the thyristor 6, the flow channels of the cold water row installed with the circuit board 8 are connected, and a thermal switch 9 is installed on the side wall of the water-cooling row 2 installed with the circuit board 8, and the thermal switch 9 is used to detect the safety of the flow channel.

[0019] In order to prevent the double reverse star transformer 1 from being damaged due to over-temperature, a fast-melting joint connected to the copper bus 5 is installed on the water cooling row 2 below the thermal switch 9, which can effectively protect the double reverse star transformer 1 to improve safety.

[0020] The DC positive and negative phase switching device disclosed in this patent has a simple structure, efficient heat exchange effect, and is easy to disassemble and assemble. The water cooling row 2 improves the heat dissipation effect, thereby reducing the failure rate of components.

[0021] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any modification and replacement based on the technical solution and the utility model concept provided by the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention.

Claims

1. A double reverse star structure DC positive and negative phase switching device, Features: The invention comprises a double reverse star transformer (1), a water cooling row (2), a positive electrode connector (3) and a negative electrode connector (4); the double reverse star transformer (1) is provided with six copper bars (5); six groups of the water cooling row (2) are connected to corresponding copper bars (5) through the copper bars (5); one end of the six groups of the water cooling row (2) away from the double reverse star transformer (1) is connected in parallel to the positive electrode connector (3); the double reverse star transformer (1) is connected to the negative electrode connector (4); a thyristor (6), a water nozzle and a water pipe (7), and a circuit board are installed on the water cooling row (2); (8) and a thermal switch (9), each group of the water-cooling radiators (2) has two, each water-cooling radiator (2) is processed with two flow channels, the flow channels at one end of the two water-cooling radiators (2) are connected through a water nozzle water pipe (7), the two thyristors (6) are sequentially installed between the two water-cooling radiators (2) through an insulating member (11), the end of one water-cooling radiator (2) is connected to the positive electrode connector (3), the end of the other water-cooling radiator (2) is installed with a circuit board (8), and the thermal switch (9) is installed on the side wall of the water-cooling radiator (2) installed with the circuit board (8).

2. According to the double reverse star structure DC positive and negative phase switching device of claim 1, Features: A fast-melt joint connected to the copper busbar (5) is installed on the water cooling row (2) below the thermal switch (9).

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