CN215419594U

CN215419594U - Multifunctional power supply for maintaining electrical appliance

Info

Publication number: CN215419594U
Application number: CN202121414908.9U
Authority: CN
Inventors: 孙开鸾; 屈东坡; 邓祥周; 刘子超
Original assignee: Zaozhuang Vocational College of Science and Technology
Current assignee: Zaozhuang Vocational College of Science and Technology
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-01-04
Anticipated expiration: 2031-06-24

Abstract

The application discloses multi-functional power for electrical apparatus maintenance, including power alternating current-direct current switching unit and control circuit unit, power alternating current-direct current switching unit includes L line and the N line of 220V power, the L line and the N line of 220V power are connected with 1 foot and 2 feet of air switch K1 respectively, 4 feet of air switch K1 are connected with 1 foot of autotransformer T1 and 1 foot of transformer T2, 3 feet of air switch K1 are connected with 2 feet of autotransformer T1, 3 feet of autotransformer T1 are connected with 2 feet of transformer T2, 4 feet of transformer T2 are connected with alternating current voltmeter V1 one end, 1 foot of contactor KM1 normally open contact and 1 foot of bridge rectifier VT1, 3 feet of transformer T2 are connected with the alternating current voltmeter V1 other end, 3 feet of contactor KM1 normally open contact and 3 feet of bridge rectifier VT 1. Has the following advantages: the device has the functions of optional AC/DC switching, stepless voltage regulation, current-limiting protection and the like, provides a safe and reliable power supply, and is used for fault diagnosis and aging test in electrical appliance maintenance.

Description

Multifunctional power supply for maintaining electrical appliance

Technical Field

The utility model relates to a multifunctional power supply for maintaining an electric appliance, belonging to the technical field of electronics.

Background

In the electrical appliance maintenance industry, various voltages are often required to be provided for equipment to be maintained, and the traditional power supply is single in power supply, has no isolation protection and cannot effectively protect maintenance personnel. If the circuit failure is not completely eliminated, blind power-up may enlarge the failure of the circuit board and its components, with irreparable consequences.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems, provides a multifunctional power supply for maintaining electrical appliances, has the functions of alternating current and direct current random switching, voltage stepless regulation, current limiting protection and the like, provides a safe and reliable power supply, and is used for fault diagnosis and aging test in electrical appliance maintenance.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a multi-functional power for appliance maintenance, including power alternating current-direct current switching unit and control circuit unit, power alternating current-direct current switching unit includes L line and the N line of 220V power, the L line and the N line of 220V power are connected with 1 foot and 2 feet of air switch K1 respectively, 4 feet of air switch K1 are connected with 1 foot of autotransformer T1 and 1 foot of transformer T2, 3 feet of air switch K1 are connected with 2 feet of autotransformer T1, 3 feet of autotransformer T1 are connected with 2 feet of transformer T2, 4 feet of transformer T2 are connected with alternating current table V1 one end, 1 foot of contactor KM1 normally open contact and 1 foot of bridge rectifier VT1, 3 feet of transformer T2 are connected with the alternating current table V1 other end, 3 feet of contactor KM1 normally open contact and 3 feet of bridge rectifier VT 1.

Furthermore, 2 feet of the bridge rectifier VT1 are connected with 3 feet of a contactor KM2 normally open contact and one end of a capacitor C1, 4 feet of the bridge rectifier VT1 are connected with 1 foot of a contactor KM2 normally open contact and the other end of the capacitor C1, 4 feet of a contactor KM2 normally open contact are connected with 4 feet of a contactor KM1 normally open contact, and 2 feet of a contactor KM2 normally open contact are connected with 2 feet of a contactor KM1 normally open contact.

Furthermore, the 2 feet of the normally open contact of the contactor KM1 are also connected with one end of a direct-current voltmeter V2, one end of a knob SK1, one end of the normally open contact of the contactor KM3 and one end of an indicator lamp L5, the other end of the indicator lamp L5 is connected with one end of an indicator lamp L6, and one end of the indicator lamp L6 is used as a power output end.

Furthermore, the 4 feet of the normally open contact of the contactor KM1 are also connected with the other end of a direct current voltmeter V2 and the other end of a knob SK1 and serve as power supply output ends.

Further, the control circuit unit comprises a knob SK2, one end of the knob SK2 is connected with an L line of a 220V power supply, and the other end of the knob SK2 is connected with one end of a button SB 3.

Furthermore, the other end of the button SB3 is connected with one end of a button SB1 and one end of a normally open contact of a contactor KM1, the other end of the button SB1 and the other end of the normally open contact of the contactor KM1 are connected with one end of a normally closed contact of a contactor KM2, the other end of the normally closed contact of the contactor KM2 is connected with one end of a coil of a contactor KM1 and one end of an indicator light L1, the other end of the coil of the contactor KM1 and the other end of the indicator light L1 are connected with an N line of a 220V power supply, and the N line is used for alternating current output control.

Furthermore, the other end of the button SB3 is also connected with one end of a button SB2 and one end of a normally open contact of a contactor KM2, the other end of the button SB2 and the other end of the normally open contact of the contactor KM1 are connected with one end of a normally closed contact of a contactor KM1, the other end of the normally closed contact of the contactor KM1 is connected with one end of a coil of a contactor KM2 and one end of an indicator light L2, the other end of the coil of the contactor KM2 and the other end of the indicator light L2 are connected with an N line of a 220V power supply, and the part is used for direct current output control.

Furthermore, the other end of the button SB3 is also connected with a normally open end of a self-locking button SB4, the normally open other end of the self-locking button SB4 is connected with one end of a coil of a contactor KM3 and one end of an indicator light L3, the other end of the coil of the contactor KM3 and the other end of the indicator light L3 are connected with an N line of a 220V power supply, and the part is used for current limiting and deprotection control.

Furthermore, the other end of the button SB3 is also connected with a normally closed end of a self-locking button SB4, the other end of the normally closed end of the self-locking button SB4 is connected with one end of an indicator light L4, and the other end of the indicator light L4 is connected with an N wire of a 220V power supply, and the part is used for controlling in current-limiting protection.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical effects:

and the voltage of the circuit is subjected to stepless regulation by adopting the self-coupling voltage regulator, so that the voltage diversification setting is realized. And simultaneously, alternating current and direct current are integrated on one wire. The function of switching between one device and the other device is realized, and the voltage requirements of different devices are met. Two bulbs are carried. The current limiting device has the advantages that the current limiting function is achieved, the function of releasing the voltage of the large filter capacitor is achieved, and the life safety and property safety of maintenance personnel are guaranteed to a great extent.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a circuit diagram of a power supply AC/DC switching unit according to the present invention;

fig. 2 is a circuit diagram of a control loop unit according to the present invention.

Detailed Description

Embodiment 1, as shown in fig. 1 and 2, a multifunctional power supply for maintaining an electrical appliance includes a power supply ac/dc switching unit and a control loop unit, the power supply ac/dc switching unit includes an L line and an N line of a 220V power supply, the L line and the N line of the 220V power supply are respectively connected to a pin 1 and a pin 2 of an air switch K1, a pin 4 of the air switch K1 is connected to a pin 1 of an autotransformer T1 and a pin 1 of a transformer T2, a pin 3 of the air switch K1 is connected to a pin 2 of a voltage regulator T1, a pin 3 of an autotransformer T1 is connected to a pin 2 of a transformer T2, a pin 4 of the transformer T2 is connected to one end of an ac meter V1, a pin 1 of a contactor KM1 VT contact and a pin 1 of a bridge rectifier VT1, and a pin 3 of the transformer T2 is connected to the other end of an ac meter V1, a pin 3 of a contactor KM1 normally open contact and a pin 3 of a bridge rectifier 1.

2 feet of the bridge rectifier VT1 are connected with 3 feet of a normally-open contact of a contactor KM2 and one end of a capacitor C1, 4 feet of the bridge rectifier VT1 are connected with 1 foot of the normally-open contact of the contactor KM2 and the other end of the capacitor C1, 4 feet of the normally-open contact of the contactor KM2 are connected with 4 feet of the normally-open contact of the contactor KM1, and 2 feet of the normally-open contact of the contactor KM2 are connected with 2 feet of the normally-open contact of the contactor KM 1.

The 2 feet of the contactor KM1 normally open contact are also connected with one end of a direct-current voltmeter V2, one end of a knob SK1, one end of the contactor KM3 normally open contact and one end of an indicator lamp L5, the other end of the indicator lamp L5 is connected with one end of an indicator lamp L6, and one end of the indicator lamp L6 is used as a power output end.

The 4 feet of the normally open contact of the contactor KM1 are also connected with the other end of a direct current voltmeter V2 and the other end of a knob SK1 and serve as a power output end.

The control loop unit comprises a knob SK2, one end of the knob SK2 is connected with an L line of a 220V power supply, the other end of the knob SK2 is connected with one end of a button SB3, the other end of the button SB3 is connected with one end of a button SB1 and one end of a contactor KM1 normally open contact, the other end of the button SB1 and the other end of the contactor KM1 normally open contact are connected with one end of a contactor KM2 normally closed contact, the other end of the contactor KM2 normally closed contact is connected with one end of a contactor KM1 coil and one end of an indicator lamp L1, the other end of the contactor KM1 coil and the other end of the indicator lamp L1 are connected with an N line of the 220V power supply, and the part is used for alternating current output control.

The other end of the button SB3 is also connected with one end of a button SB2 and one end of a normally open contact of a contactor KM2, the other end of the button SB2 and the other end of the normally open contact of the contactor KM1 are connected with one end of a normally closed contact of a contactor KM1, the other end of the normally closed contact of the contactor KM1 is connected with one end of a coil of a contactor KM2 and one end of an indicator light L2, the other end of the coil of the contactor KM2 and the other end of the indicator light L2 are connected with an N line of a 220V power supply, and the part is used for direct current output control.

The other end of the button SB3 is also connected with a normally open end of a self-locking button SB4, the normally open other end of the self-locking button SB4 is connected with one end of a coil of a contactor KM3 and one end of an indicator light L3, the other end of the coil of the contactor KM3 and the other end of the indicator light L3 are connected with an N line of a 220V power supply, and the part is used for current limiting and deprotection control.

The other end of the button SB3 is also connected with a normally closed end of a self-locking button SB4, the other end of the normally closed end of the self-locking button SB4 is connected with one end of an indicator light L4, the other end of the indicator light L4 is connected with an N wire of a 220V power supply, and the part is used for controlling in current-limiting protection.

The commercial power 220v is connected to the input end of the boosting transformer through the voltage regulator, and the voltage of the input end of the boosting transformer is changed through rotating the voltage regulator, so that the voltage of the output end of the boosting transformer is controlled, and stepless isolation voltage regulation is realized. The output voltage of the secondary transformer is divided into two paths, and the switching of the two paths is controlled by a relay. One path is directly output after current limiting protection of two incandescent bulbs of 220v/200w connected in series. The other path enters a rectifier bridge. After rectification and filtering, the lamp is connected to the front ends of two bulbs. The relays for controlling alternating current and direct current are in interlocking logic, so that the use safety is ensured.

1. AC/DC switching

The power is connected with 220v commercial power, an air switch K1 is pushed up, a three-position switch is turned on, an alternating current button SB1 is pressed, alternating current is output, a stop button SB3 is pressed, a direct current button is pressed, and direct current is output.

2. Regulating voltage

When the AC button SB1 is pressed down, the voltage adjusting knob SK2 is turned down, the voltage can be adjusted at 60-600V, and when the DC button SB2 is pressed down, the voltage adjusting knob SK2 is turned down, the voltage can be adjusted at 60-850V.

3. Current limiting protection

When the protection button SB4 is pressed down and the circuit is short-circuited, the lamp bulb is switched on, so that the current can be effectively reduced, and the user and the electric appliance to be repaired are protected.

4. Discharge function

Before the electrical apparatus maintenance, hit the knob SK1 and discharge, insert this equipment, can release the big electric capacity voltage of filtering, prevent by the electric injury in the maintenance process.

5. Aging test

The service life of the maintained electric appliance is often shortened due to the reasons of weak contact of welding points and the like, a power supply can be connected for aging test, and when a short circuit occurs, the bulb can be lighted.

The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a multi-functional power for electrical apparatus maintenance which characterized in that: including power alternating current-direct current switching unit and control circuit unit, power alternating current-direct current switching unit includes L line and the N line of 220V power, the L line and the N line of 220V power are connected with 1 foot and 2 feet that air switch K1 respectively, 4 feet of air switch K1 are connected with 1 foot of autotransformer T1 and 1 foot of transformer T2, 3 feet of air switch K1 are connected with 2 feet of autotransformer T1, 3 feet of autotransformer T1 are connected with 2 feet of transformer T2, 4 feet of transformer T2 are connected with alternating current voltmeter V1 one end, 1 foot of contactor KM1 normally open contact and 1 foot of bridge rectifier VT1, 3 feet of transformer T2 are connected with the alternating current VT1 other end, 3 feet of contactor KM1 normally open contact and 3 feet of bridge rectifier 1.

2. The multifunctional electric power supply for electric appliance maintenance as claimed in claim 1, wherein: 2 feet of the bridge rectifier VT1 are connected with 3 feet of a normally-open contact of a contactor KM2 and one end of a capacitor C1, 4 feet of the bridge rectifier VT1 are connected with 1 foot of the normally-open contact of the contactor KM2 and the other end of the capacitor C1, 4 feet of the normally-open contact of the contactor KM2 are connected with 4 feet of the normally-open contact of the contactor KM1, and 2 feet of the normally-open contact of the contactor KM2 are connected with 2 feet of the normally-open contact of the contactor KM 1.

3. The multifunctional electric power supply for electric appliance maintenance as claimed in claim 1, wherein: the 2 feet of the contactor KM1 normally open contact are also connected with one end of a direct-current voltmeter V2, one end of a knob SK1, one end of the contactor KM3 normally open contact and one end of an indicator lamp L5, the other end of the indicator lamp L5 is connected with one end of an indicator lamp L6, and one end of the indicator lamp L6 is used as a power output end.

4. The multifunctional electric power supply for electric appliance maintenance as claimed in claim 1, wherein: the 4 feet of the normally open contact of the contactor KM1 are also connected with the other end of a direct current voltmeter V2 and the other end of a knob SK1 and serve as a power output end.

5. The multifunctional electric power supply for electric appliance maintenance as claimed in claim 1, wherein: the control loop unit comprises a knob SK2, one end of a knob SK2 is connected with an L line of a 220V power supply, and the other end of the knob SK2 is connected with one end of a button SB 3.

6. The multifunctional electric power supply for electric appliance maintenance as claimed in claim 5, wherein: the other end of the button SB3 is connected with one end of a button SB1 and one end of a normally open contact of a contactor KM1, the other end of the button SB1 and the other end of the normally open contact of the contactor KM1 are connected with one end of a normally closed contact of a contactor KM2, the other end of the normally closed contact of the contactor KM2 is connected with one end of a coil of a contactor KM1 and one end of an indicator light L1, the other end of the coil of the contactor KM1 and the other end of the indicator light L1 are connected with an N line of a 220V power supply, and the part is used for alternating current output control.

7. The multifunctional electric power supply for electric appliance maintenance as claimed in claim 5, wherein: the other end of the button SB3 is also connected with one end of a button SB2 and one end of a normally open contact of a contactor KM2, the other end of the button SB2 and the other end of the normally open contact of the contactor KM1 are connected with one end of a normally closed contact of a contactor KM1, the other end of the normally closed contact of the contactor KM1 is connected with one end of a coil of a contactor KM2 and one end of an indicator light L2, the other end of the coil of the contactor KM2 and the other end of the indicator light L2 are connected with an N line of a 220V power supply, and the part is used for direct current output control.

8. The multifunctional electric power supply for electric appliance maintenance as claimed in claim 5, wherein: the other end of the button SB3 is also connected with a normally open end of a self-locking button SB4, the normally open other end of the self-locking button SB4 is connected with one end of a coil of a contactor KM3 and one end of an indicator light L3, the other end of the coil of the contactor KM3 and the other end of the indicator light L3 are connected with an N line of a 220V power supply, and the part is used for current limiting and deprotection control.

9. The multifunctional electric power supply for electric appliance maintenance as claimed in claim 5, wherein: the other end of the button SB3 is also connected with a normally closed end of a self-locking button SB4, the other end of the normally closed end of the self-locking button SB4 is connected with one end of an indicator light L4, the other end of the indicator light L4 is connected with an N wire of a 220V power supply, and the part is used for controlling in current-limiting protection.