CN214799320U - Simple frequency converter maintenance direct-current power supply - Google Patents

Abstract

The utility model relates to a simple frequency converter maintenance direct current power supply, which comprises a protective shell and a power circuit, wherein two incandescent bulbs are arranged above the protective shell, and a rectifier bridge, two filter capacitors and two voltage-sharing resistors are arranged in the protective shell; the alternating current input end of the rectifier bridge is connected with alternating current, a filter capacitor C1 and a filter capacitor C2 are connected between the positive pole and the negative pole of the direct current power supply output end of the rectifier bridge in series, the filter capacitor C1 is connected with a voltage-sharing resistor R1 in parallel, the filter capacitor C2 is connected with a voltage-sharing resistor R2 in parallel, the positive pole of the direct current end of the rectifier bridge is also connected with a display lamp L1 and an L2 in series, and the other end of the display lamp L2 serves as the positive pole of the direct current power supply output; and an isolation transformer can be additionally arranged for boosting the alternating current 220V commercial power to 380V. The utility model discloses small, occupation space is little, can be used to test switching power supply circuit and inverter circuit, and it is convenient to maintain, and adaptability is stronger, only needs the necessary material of purchase to assemble the use, has saved maintenance converter cost.

Description

Simple frequency converter maintenance direct-current power supply

Technical Field

This patent application belongs to electric, electronic equipment technical field, and more specifically says, relates to a simple and easy converter maintenance DC power supply.

Background

Along with the idea of manufacturing 2025 in China, the electrical equipment in the industry of the iron and steel mines has higher and higher intelligentization and automation degrees, the frequency converter equipment is applied more and more, and the frequency converter equipment is repeatedly upgraded to schedule for saving the production cost and repairing the old and utilizing the waste. During the maintenance process of the frequency converter, the part with the highest fault rate is a rectifying unit and an inverting unit, wherein the fault rate of the inverting unit is particularly high. The detection inversion unit needs to provide direct current voltage 537V or 300V for the circuit board, and the internal direct current voltage of the common 380V frequency converter is about 537V. If external AC power supply when overhauing, not only can use the rectifier module in the converter, troublesome poeration has increased the risk that rectifier module damaged in the maintenance process moreover. If a complete set of direct current power supply device in the market is purchased, the cost is higher, and the maintenance cost is invisibly increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve provides a simple and easy converter maintenance DC power supply, and this kind of DC power supply device can be suitable for exchanging 220V commercial power or 380V input power, adapts to on-the-spot maintenance or team and organizes the maintenance.

In order to solve the above problem, the utility model discloses the technical scheme who adopts is:

a simple frequency converter maintenance direct-current power supply comprises a protective shell and a power circuit, wherein the power circuit comprises two display lamps, a rectifier bridge, two filter capacitors and two voltage-sharing resistors, the two display lamps are located on the protective shell, and the rectifier bridge, the two filter capacitors and the two voltage-sharing resistors are located inside the protective shell;

the alternating current input end of the rectifier bridge is connected with alternating current, a filter capacitor C1 and a filter capacitor C2 are connected between the positive pole and the negative pole of the direct current power supply output end of the rectifier bridge in series, a voltage-sharing resistor R1 is connected in parallel with the filter capacitor C1, a voltage-sharing resistor R2 is connected in parallel with the filter capacitor C2, a display lamp L1 and a display lamp L2 are connected in series with the positive pole of the direct current power supply output end of the rectifier bridge in sequence, the other end of the display lamp L2 serves as the positive pole of the direct current power supply output end, and the negative pole of the direct current power supply output end of the rectifier bridge serves as the negative pole of the direct current power supply output end.

The utility model discloses technical scheme's further improvement lies in: the device also comprises an isolation transformer, wherein the alternating current input end of the isolation transformer is connected with the alternating current, and the alternating current output end of the isolation transformer is connected with the alternating current input end of the rectifier bridge.

The utility model discloses technical scheme's further improvement lies in: the display lamp is an incandescent lamp (or an LED lamp), and if the incandescent lamp is selected, the specification of the incandescent lamp is 220V and 40W.

The utility model discloses technical scheme's further improvement lies in: the rectifier bridge is 50A and 1600V.

The utility model discloses technical scheme's further improvement lies in: the filter capacitors C1 and C2 are both 450V and 220 μ F.

The utility model discloses technical scheme's further improvement lies in: the voltage equalizing resistors R1 and R2 are both 2W and 50k omega.

The utility model discloses technical scheme's further improvement lies in: the positive pole and the negative pole of the direct current power supply output are led out through an outlet terminal, and the outlet terminal is Wendmiller SAKDU 4N.

Since the technical scheme is used, the utility model discloses the beneficial effect who gains is:

the utility model discloses can be suitable for exchanging 220V commercial power or 380V input power, adapt to field maintenance or team's maintenance, have simple structure, convenient to use, characteristics that the suitability is strong, and the place that can significantly reduce effectively reduces purchasing cost to maintenance personal's restriction, improves work efficiency and economic benefits, and the application scenario is wide, has high spreading value.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention;

fig. 2 is a schematic top view of an embodiment of the present invention;

fig. 3 is a left side view structure diagram of the embodiment of the present invention;

fig. 4 is a schematic diagram of a right-view structure of an embodiment of the present invention;

fig. 5 is a circuit diagram of an embodiment of the present invention;

wherein, 1, a simple protective shell; 2. an incandescent light bulb; 3. a rectifier bridge; 4. a filter capacitor; 5. a voltage-sharing resistor; 6. an incoming line switch; 7. and an outlet terminal.

Detailed Description

The present invention will be described in further detail with reference to examples.

The utility model discloses a simple and easy converter maintenance DC power supply, refer to fig. 1~ 4, including the protective housing 1 and the power supply circuit of simple and easy preparation, power supply circuit includes two display lamps, a rectifier bridge 3, two filter capacitance 4, two voltage-sharing resistance 5, and two display lamps are located protective housing 1, and rectifier bridge 3, two filter capacitance 4, two voltage-sharing resistance 5 all are located protective housing 1 inside.

The display lamp is an incandescent bulb 2, two incandescent bulbs 2 are horizontally arranged above the protective shell 1, and the incandescent bulbs 2 need 220V and 40W and are obviously arranged above the protective shell 1. The inside rectifier bridge 3, filter capacitor 4, the equalizer resistor 5 of setting up of protective housing 1, for inlet wire safety, high efficiency of being qualified for the next round of competitions, still be equipped with inlet wire switch 6, leading-out terminal 7, inlet wire switch 6 is located the protective housing 1 left side, leading-out terminal 7 is located protective housing 1 right side, namely the left side is advanced right side and is gone out. The incoming line switch 6 is C65N D10, the positive pole and the negative pole of the direct current power supply output are led out through an outgoing line terminal 7, and the outgoing line terminal is Wedgel Miller SAKDU 4N.

The protective shell 1 can be built by using a rigid plastic plate or a steel plate and has certain strength, and the specification is 350 × 120 × 126. Of course, the actual specification can be modified according to the specific situation according to the requirement.

As shown in fig. 5, the internal connection relationship of the power supply circuit is shown, wherein the filter capacitor 4 and the voltage-sharing resistor 5 are actually referred to as the filter capacitor C1 and the filter capacitor C2, and the voltage-sharing resistor R1 and the voltage-sharing resistor R2 in fig. 5. The following is a description made in conjunction with fig. 5.

The alternating current input end of the rectifier bridge 3 is connected with alternating current (such as AC 220V), a filter capacitor C1 and a filter capacitor C2 are connected in series between the positive pole and the negative pole of the direct current power supply output end of the rectifier bridge 3, the filter capacitor C1 is connected with a voltage-sharing resistor R1 in parallel, the filter capacitor C2 is connected with a voltage-sharing resistor R2 in parallel, the positive pole of the direct current end of the rectifier bridge 3 is further connected with a display lamp L1 and a display lamp L2 in series, the other end of the display lamp L2 serves as the positive pole of the direct current power supply output, and the negative pole of the direct current power supply output end of the rectifier bridge 3 serves as the negative pole of the direct current power supply output.

In order to meet higher requirements, an isolation transformer can be additionally arranged according to actual conditions, the alternating current input end of the isolation transformer is connected with alternating current, the alternating current output end of the isolation transformer is connected with the alternating current input end of the rectifier bridge 3, the alternating current 220V commercial power is boosted to 380V, and more requirements are met.

The selection of the specific components is that the rectifier bridge is 50A and 1600V, and the filter capacitor C1 and the filter capacitor C2 are both 450V and 220 muF; the voltage-sharing resistor R1 and the voltage-sharing resistor R2 are both 2W and 50k omega; when the resistor meets the voltage level, the resistor with similar power and resistance can be used instead, such as 3W 120k omega. In the case that the capacitor satisfies the voltage level, other capacitors, such as 450V 470 muf, may be used instead.

This device assembles earlier, can put into use after the equipment is accomplished, and this device volume is less, occupation space is little, can be used to test switching power supply circuit and inverter circuit, and it is convenient to maintain, can be used to exchange 220V and 380V voltage input, and adaptability is stronger, only needs the purchase necessary material can assemble the use, has saved maintenance converter cost.

Claims (7)

1. The utility model provides a simple and easy converter maintenance DC power supply which characterized in that: the LED display lamp comprises a protective shell and a power circuit, wherein the power circuit comprises two display lamps, a rectifier bridge, two filter capacitors and two voltage-sharing resistors;

the alternating current input end of the rectifier bridge is connected with alternating current, a filter capacitor C1 and a filter capacitor C2 are connected between the positive pole and the negative pole of the direct current power supply output end of the rectifier bridge in series, a voltage-sharing resistor R1 is connected in parallel with the filter capacitor C1, a voltage-sharing resistor R2 is connected in parallel with the filter capacitor C2, a display lamp L1 and a display lamp L2 are further connected in series with the positive pole of the direct current end of the rectifier bridge in sequence, the other end of the display lamp L2 serves as the positive pole of the direct current power supply output, and the negative pole of the direct current power supply output end of the rectifier bridge serves as the negative pole of the direct current power supply output.

2. The simple inverter maintenance direct-current power supply of claim 1, wherein: the device also comprises an isolation transformer, wherein the alternating current input end of the isolation transformer is connected with the alternating current, and the alternating current output end of the isolation transformer is connected with the alternating current input end of the rectifier bridge.

3. The simple inverter maintenance direct-current power supply of claim 2, wherein: the display lamp is an incandescent lamp, and the specification of the incandescent bulb is 220V and 40W.

4. The simple inverter maintenance direct current power supply of claim 3, wherein: the rectifier bridge is 50A and 1600V.

5. The simple inverter maintenance direct-current power supply of claim 4, wherein: the filter capacitor C1 and the filter capacitor C2 are both 450V and 220 muF.

6. The simple inverter maintenance direct-current power supply of claim 5, wherein: the voltage equalizing resistor R1 and the voltage equalizing resistor R2 are both 2W and 50k omega.

7. The simple frequency converter maintenance direct-current power supply according to any one of claims 1 to 6, characterized in that: the positive pole and the negative pole of the direct current power supply output are led out through an outlet terminal, and the outlet terminal is Wendmiller SAKDU 4N.

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