CN213484748U

CN213484748U - Multifunctional power supply device for industrial equipment maintenance

Info

Publication number: CN213484748U
Application number: CN202022979390.5U
Authority: CN
Inventors: 张达鑫; 张达瑞; 卢远华
Original assignee: Jianlong Xilin Iron And Steel Co ltd
Current assignee: Jianlong Xilin Iron And Steel Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-06-18
Anticipated expiration: 2030-12-09

Abstract

The utility model provides a multi-functional power supply unit is used in industrial equipment maintenance belongs to power supply unit technical field. The utility model discloses alternating current 220V voltage is connected to the primary winding of alternating current voltage converter, and the first group secondary winding of alternating current voltage converter is connected with bridge rectifier circuit one, and the upper end of first resistance is connected to 540V direct current voltage output end after being connected with overcurrent protection circuit two; a second group of secondary windings of the alternating-current voltage converter is connected with a second bridge rectifier circuit, a lower side port of the IC chip is connected to the upper end of the adjustable resistor, and the upper end of the third resistor is connected with a third overcurrent protection circuit and then is connected to a 1.25-24V adjustable direct-current output end; the third set of secondary windings of the ac voltage transformer has a center tap, and the lower and center taps of the third set of secondary windings are directly connected to the dual 15V ac output terminals. The utility model discloses multiple voltage can be provided for the maintenance of various industrial equipment is more convenient, and the on-the-spot practicality is strong, is fit for different mains voltage transform demands.

Description

Multifunctional power supply device for industrial equipment maintenance

Technical Field

The utility model relates to a multi-functional power supply unit is used in industrial equipment maintenance belongs to power supply unit technical field.

Background

When industrial equipment or plates such as a frequency converter, a servo controller, a soft starter, a numerical control machine, an electric welding machine, an instrument and the like are damaged and repaired, a maintenance power supply with various alternating current and direct current voltages is often needed to achieve the purpose of independent electrification and repair of fault equipment and board cards. At present, some maintenance enthusiasts make maintenance power supplies such as some frequency converters by self, but the general functions of the maintenance power supplies are single, the application range is small, and extra equipment such as an adjustable direct-current power supply is needed to be matched for maintenance. Especially, the portable maintenance power supply device is carried during on-site maintenance, certain alternating current and direct current voltages are lost, and inconvenience is brought to maintenance of industrial equipment.

Disclosure of Invention

The utility model aims at solving the problem that above-mentioned prior art exists, and then provide a multi-functional power supply unit is used in industrial equipment maintenance.

The utility model aims at realizing through the following technical scheme:

a multifunctional power supply device for industrial equipment maintenance comprises an AC voltage converter, a first overcurrent protection circuit, a 380V AC voltage output terminal, a first bridge rectifier circuit, a first capacitor, a first resistor, a second overcurrent protection circuit, a 540V DC voltage output terminal, and a second bridge rectifier circuit, the alternating current 220V voltage is connected to a primary winding of an alternating current voltage converter, the upper end of a first group of secondary windings of the alternating current voltage converter is connected to a 380V alternating current voltage output end after being connected with a first overcurrent protection circuit, and the lower end of the first group of secondary windings is directly connected to the 380V alternating current voltage output end; the first group of secondary windings of the alternating-current voltage converter is connected with the first bridge rectifier circuit, the first rectifier circuit is sequentially connected with a first capacitor and a first resistor in parallel, the upper end of the first resistor is connected with the second overcurrent protection circuit and then connected with the 540V direct-current voltage output end, and the lower end of the first resistor is directly connected with the 540V direct-current voltage output end; a second group of secondary windings of the alternating-current voltage converter is connected with a second bridge rectifier circuit, the second bridge rectifier circuit is sequentially connected with a second capacitor and a second resistor in parallel, the upper end of the second resistor is connected to the left port of the IC chip, the lower port of the IC chip is connected to the upper end of an adjustable resistor, the lower end and the sliding end of the adjustable resistor are connected to the lower end of the second resistor, a third resistor is connected between the right end of the IC chip and the lower end of the adjustable resistor in parallel, the upper end of the third resistor is connected with a third overcurrent protection circuit and then connected to an adjustable direct-current output end of 1.25V-24V, and the lower end of the third resistor is directly connected to the; and a third group of secondary windings of the alternating-current voltage converter is provided with a center tap, the upper end tap of the third group of secondary windings is connected to the double 15V alternating-current output end through the over-current protection circuit IV, and the lower end tap and the center tap of the third group of secondary windings are directly connected to the double 15V alternating-current output end.

The utility model relates to a multi-functional power supply unit is used in industrial equipment maintenance, overcurrent protection circuit one, overcurrent protection circuit two and overcurrent protection circuit three include voltmeter, ampere meter and fuse, and wherein the fuse of overcurrent protection circuit three is located the circuit front end.

The utility model relates to a multi-functional power supply unit is used in industrial equipment maintenance, the IC chip adopts LM317 three-terminal steady voltage chip.

The utility model relates to a multi-functional power supply unit is used in industrial equipment maintenance, adjustable resistance's resistance scope is 0 ~ 5.1K omega, and the pressure regulating range is direct current 1.25V-24V.

The utility model relates to a multi-functional power supply unit is used in industrial equipment maintenance, 380V alternating voltage output, 540V direct current voltage output, the adjustable direct current output of 1.25V ~ 24V and two 15V alternating current output adopt IC test hook, XH2.54mm 2P terminal, PH2.0mm 2P terminal, dupont needle file, banana plug or alligator clip.

The utility model relates to a multi-functional power supply unit is used in industrial equipment maintenance can provide and exchange 220V, exchange 380V, exchange two 15V, direct current 540V, variable direct current 1.5 ~ 24V's multiple voltage, make the maintenance of various industrial equipment more convenient, and the on-the-spot practicality is strong, is fit for different mains voltage transform demands; the circuit is provided with a current-limiting protection function, so that equipment is protected in time when the load exceeds the current; each overcurrent protection circuit comprises a voltmeter and an ammeter, the output voltage and the load current are observed in real time, and whether the load works abnormally or not can be judged according to the current value; the output end is complete in connecting accessories and connected with corresponding sockets according to different purposes.

Drawings

Fig. 1 is a circuit diagram of the multifunctional power supply device for maintaining industrial equipment according to the present invention.

Fig. 2 is a circuit diagram of the multifunctional power supply device for maintaining industrial equipment.

Reference numeral 1 in the figure is an alternating voltage converter; 2 is an overcurrent protection circuit I; 3 is a 380V alternating voltage output end; 4 is a bridge rectifier circuit I; 5 is a first capacitor; 6 is a first resistor; 7 is overcurrent protection circuit two; 8 is a 540V direct-current voltage output end; 9 is a bridge rectifier circuit II; 10 is a second capacitor; 11 is a second resistor; 12 is an IC chip; 13 is an adjustable resistor; 14 is a third resistor; 15 is overcurrent protection circuit three; 16 is an adjustable direct current output end of 1.25V-24V; 17 is overcurrent protection circuit four; and 18 is a double 15V alternating current output end.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.

The first embodiment is as follows: as shown in fig. 1 and 2, the multifunctional power supply device for industrial equipment maintenance according to the present embodiment, in which an input voltage is 220V ac, a transformer is transformed by an ac transformer, a plurality of windings are provided on a secondary side of the transformer, power is 500W, a plurality of ac/dc voltages can be supplied to the power supply device, and the power supply device can supply a load with the ac/dc voltages, includes: 380V alternating voltage and current 1A; 540V dc voltage, current 1A; 1.25-24V adjustable DC power supply with current of 1.5A; double 15V AC voltage, current 1A.

380V alternating voltage output by the power supply device passes through the overcurrent protection circuit and is connected with the current voltmeter, so that power can be supplied to loads such as a low-power frequency converter and the like, and the loads are used for power-on maintenance test;

the 540V direct current voltage output by the power supply device is generated after the alternating current 380V of the secondary winding of the transformer is subjected to bridge rectification and capacitor filtering, the dummy load resistor simultaneously plays a role in releasing energy storage voltage on the capacitor after power failure so as to prevent high voltage from hurting people, the voltage can be used for powering on loads such as a frequency converter and a power supply control board of a driver, a board card is overhauled when being separated from the frequency converter, the power current on the general frequency converter board card does not exceed 400MA, the voltage output is also provided with an overcurrent protection circuit, and a voltage ammeter is connected so as to observe the load current condition; the LED indicating lamp is adopted in the circuit to indicate the level of the direct current voltage, the voltage in the circuit is up to the direct current 540V, the stored energy on the capacitor can be kept for a certain time after the device is powered off, the energy needs to be consumed on the load resistor, and the indicating lamp is used for safety prompt and is used for preventing people from getting electric shock accidentally. When the direct-current voltage is higher than the safety voltage, the LED indicator lamp is on, and when the voltage is lower than 36V after the dummy load R1 resistor consumes the stored energy, the LED indicator lamp is off;

thirdly, the 1.25V-24V adjustable DC output of the power supply device is that the AC 24V of the secondary winding of the transformer forms DC voltage through rectification and filtering, and then the DC voltage passes through a voltage regulating circuit consisting of an IC chip and an adjustable resistor to output the variable DC voltage of 1.25V-24V, the output is also connected with an overcurrent protection circuit, an ammeter and a voltmeter, the output voltage can be finely adjusted through an adjusting knob, and the adjustable DC voltage is generally used for the oscillation starting maintenance test of a switching power supply chip, such as 3842/3843/3844/3845 series PWM chips and the like;

and (IV) double 15V alternating current output voltage of the power supply device is also generated through a secondary winding of the transformer, and the output is connected with an overcurrent protection circuit, so that double 15V overhauling voltage can be provided for a power supply control board of the electric welding machine, and convenience is provided for maintaining the single-tube IGBT electric welding machine.

The output end connecting piece is provided with a special IC test hook, an XH2.54mm 2P terminal, a PH2.0mm 2P terminal, a Dupont needle seat, a banana plug, an alligator clip and other accessories, so that various industrial devices can be maintained more conveniently. Examples of the implemented maintenance scenario are: electrifying and overhauling the AC 380V frequency converter; offline maintenance is carried out on the power panel of the DC 540V frequency converter; the method comprises the following steps of starting oscillation and overhauling chips such as UC2842, UC2843, UC2844 and UC2845, testing the quality of a 24V radiating fan, and maintaining equipment such as an instrument and an electric welding machine by using double Alternating Current (AC) 15V voltages.

The method is characterized in that 220V alternating current is input and transformed by a transformer T1, three windings and circuits thereof are designed on the secondary side, and various alternating and direct current voltages are generated, as shown in FIG. 2, and the method comprises the following steps:

the first winding generates 380V alternating current, the alternating current is led out to the terminal block and can directly supply power to 380V equipment, and the 380V alternating current is rectified and filtered by a bridge type rectifier to generate 540V direct current to be connected to a banana socket for overhauling of an industrial equipment board card offline and the like;

the second way winding produces and exchanges 24V voltage, through three-terminal regulator chip and peripheral circuit (dashed line frame in fig. 2), exports 1.5 ~ 24V adjustable direct current voltage, and on dupont needle file and two 2P sockets were received simultaneously in the output, this way adjustable voltage, the maintenance content that can realize included: the oscillation starting maintenance of the switch chips UC284X and UC384X, for example, about 17V voltage is supplied to the chip 7 pin, UC2842 oscillation starting (about 10V of UC284 oscillation starting voltage) is generated, 5V stable voltage is generated by the chip 8 pin, if 5V voltage is not generated by the chip 8 pin, the switch chips are damaged in most cases, and the maintenance and judgment of the switch power supply can be carried out comprehensively by adjusting the direct current voltage through the device; when the adjustable direct-current voltage is 24V, the power supply test of a 24V fan on the frequency converter can be tested; in addition, when the variable direct-current voltage is adjusted to 5V, 9V, 12V and the like, the voltage regulator can provide maintenance voltage for various instruments and industrial control equipment.

The third winding is double 15V with a middle tap, and the voltage can be used as industrial equipment such as an overhaul electric welding machine, a weighing instrument display screen, a photometer and the like and is also common alternating voltage.

The above description is only the preferred embodiments of the present invention, and these embodiments are all based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a multi-functional power supply unit is used in industrial equipment maintenance, characterized in that, multi-functional power supply unit is used in industrial equipment maintenance includes alternating voltage converter (1), overcurrent protection circuit (2), 380V alternating voltage output (3), bridge rectifier circuit (4), first electric capacity (5), first resistance (6), overcurrent protection circuit two (7), 540V direct current voltage output (8), bridge rectifier circuit two (9), second electric capacity (10), second resistance (11), IC chip (12), adjustable resistance (13), third resistance (14), overcurrent protection circuit three (15), 1.25V ~ 24V adjustable direct current output (16), overcurrent protection circuit four (17) and two 15V alternating current output (18), alternating current 220V voltage is connected to the primary winding of alternating voltage converter (1), the upper end of the first group secondary winding of alternating voltage converter (1) is connected overcurrent protection circuit one (2) ) Then connected to a 380V alternating voltage output end (3), and the lower ends of the first group of secondary windings are directly connected to the 380V alternating voltage output end (3); a first group of secondary windings of the alternating voltage converter (1) are connected with a first bridge rectifier circuit (4), the first rectifier circuit (4) is sequentially connected with a first capacitor (5) and a first resistor (6) in parallel, the upper end of the first resistor (6) is connected with a second overcurrent protection circuit (7) and then is connected with a 540V direct-current voltage output end (8), and the lower end of the first resistor (6) is directly connected with the 540V direct-current voltage output end (8); a second group of secondary windings of the alternating current voltage converter (1) is connected with a second bridge rectifier circuit (9), the second bridge rectifier circuit (9) is sequentially connected with a second capacitor (10) and a second resistor (11) in parallel, the upper end of the second resistor (11) is connected to the left port of an IC chip (12), the lower port of the IC chip (12) is connected to the upper end of an adjustable resistor (13), the lower end and the sliding end of the adjustable resistor (13) are connected to the lower end of the second resistor (11), a third resistor (14) is connected between the right end of the IC chip (12) and the lower end of the adjustable resistor (13) in parallel, the upper end of the third resistor (14) is connected to a 1.25-24V adjustable direct current output end (16) after being connected with a third overcurrent protection circuit (15), and the lower end of the third resistor (14) is directly connected to the 1.25-24V adjustable direct; the third group of secondary windings of the alternating voltage converter (1) is provided with a center tap, the upper end tap of the third group of secondary windings is connected to a double 15V alternating current output end (18) through an overcurrent protection circuit four (17), and the lower end tap and the center tap of the third group of secondary windings are directly connected to the double 15V alternating current output end (18).

2. The multifunctional power supply apparatus for industrial equipment maintenance as defined in claim 1, wherein said first (2), second (7) and third (15) overcurrent protection circuits include a voltmeter, an ammeter and a fuse, wherein the fuse of the third (15) overcurrent protection circuit is located at a front end of the circuit.

3. The multifunctional power supply device for industrial equipment maintenance according to claim 1, wherein the IC chip (12) is an LM317 three-terminal voltage regulator chip.

4. The multifunctional power supply device for industrial equipment maintenance according to claim 1, wherein the resistance range of the adjustable resistor (13) is 0-5.1K Ω, and the voltage regulation range is 1.25V-24V dc.

5. The multifunctional power supply device for industrial equipment maintenance according to claim 1, wherein the 380V ac voltage output terminal (3), the 540V dc voltage output terminal (8), the 1.25V-24V adjustable dc output terminal (16) and the double 15V ac output terminal (18) employ an IC test hook, an xh2.54mm 2P terminal, a ph2.0mm 2P terminal, a dupont socket, a banana plug or an alligator clip.