CN219420609U

CN219420609U - Power supply device for calibrating electric parameter detection equipment of arc cutting machine

Info

Publication number: CN219420609U
Application number: CN202320654496.9U
Authority: CN
Inventors: 陈凯; 刘忠; 黄震; 贾文杰; 黄胜翠
Original assignee: Chengdu Sanfang Electrical Application Co ltd
Current assignee: Chengdu Sanfang Electrical Application Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-07-25
Anticipated expiration: 2033-03-29

Abstract

The utility model relates to a power supply device for calibrating an electric parameter detection device of an arc cutting machine, which comprises three arc welding direct current power supplies connected in series, wherein each arc welding direct current power supply consists of an arc welding transformer and a rectifier diode unit, a primary coil and a secondary coil of each arc welding transformer are respectively arranged at the upper end and the lower end of the left side and the right side of a square iron core, and a space for a movable iron core to enter and exit is reserved in the middle; the rectifier diode units in each arc welding direct current power supply are connected with the secondary coils of the arc welding transformers, the three rectifier diode units are connected in series, and the primary coils of the three arc welding transformers are connected with each other. The utility model adopts three direct current series operation, the direct current no-load voltage can reach more than 230V, the output direct current can reach more than 500A, the requirements of the calibration range of the electric arc cutting machine electric parameter detection equipment are met, and the direct current special power supply for meeting the electric parameters such as voltage, current, power and the like required by the calibration of the electric arc cutting machine electric parameter detection equipment is obtained.

Description

Power supply device for calibrating electric parameter detection equipment of arc cutting machine

Technical Field

The utility model relates to the technical field of power supplies, in particular to a power supply device for calibrating an electric parameter detection device of an arc cutting machine.

Background

The electric parameter detection device of the arc cutting machine is a detection device for factory detection or type test of the arc cutting machine, is often called a cutting machine detection table for short, and is mainly used for detecting electric parameters such as input voltage, input current, input power, output no-load voltage, output load voltage (cutting arc voltage), output current (arc cutting current), output power, output current adjusting range and the like of the arc cutting machine. In order to ensure the accuracy of the detection parameters, the arc-cutting machine electrical parameter detection device needs to be periodically calibrated. The comparison method is generally adopted for calibration, and a power supply device capable of covering parameters of the universal arc cutting machine by input and output current, voltage and power is needed during the comparison method for calibration. However, since the arc cutting machine has a relatively high voltage, the current is not very high, and most of the rated current of the power supply for arc cutting is within 200A, the arc cutting machine exceeding 200A is relatively special, the price is very high, and the product is relatively small. In order to detect the universality of the equipment, the cutting current detection range of many electric parameter detection equipment of the arc cutting machine can reach 500A generally, but the input and output parameters of the 200A electric parameter detection equipment of the arc cutting machine do not meet the requirement of a calibration range; if two arc cutting power supplies are used in parallel, the two arc cutting power supplies are temporarily connected in parallel, and current adjustment is performed on the two arc cutting power supplies at the same time, so that time is wasted in calibration; because the arc power supply belongs to a special power supply for cutting, the power supply has high-frequency high-voltage (more than 6000V) output, a control system is complex and high in cost, if the arc power supply is used as a power supply for calibration, a control part of the cutting power supply must be changed, a high-frequency high-voltage loop of the arc power supply is disconnected, and the arc power supply is recovered after the calibration is finished, so that the arc power supply is very time-consuming and complex in operation.

At present, when the electric parameter detection equipment of the arc cutting machine is calibrated in China, an arc cutting machine with larger rated cutting current is generally adopted as a power supply for calibration. The current of arc cutting is direct current, the no-load voltage of the arc cutting machine is higher, generally more than 200V, and the cutting arc voltage is also higher than the arc voltage of arc welding, generally more than 80V.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, provides a power supply device for calibrating an electric parameter detection device of an arc cutting machine, and solves the problems of the prior device.

The aim of the utility model is achieved by the following technical scheme: the power supply device for calibrating the electric parameter detection equipment of the arc cutting machine comprises three arc welding direct current power supplies which are connected in series, wherein each arc welding direct current power supply consists of an arc welding transformer and a rectifier diode unit, a primary coil and a secondary coil of each arc welding transformer are respectively arranged at the upper end and the lower end of the left side and the right side of a square iron core, and a space for a movable iron core to enter and exit is reserved in the middle; the rectifier diode units in each arc welding direct current power supply are connected with the secondary coils of the arc welding transformers, the three rectifier diode units are connected in series, and the primary coils of the three arc welding transformers are connected with each other.

The upper primary coils of each arc welding transformer are connected with each other, the lower primary coils of each arc welding transformer are connected with each other, and two ends of an input terminal are respectively connected with the upper primary coils and the lower primary coils of the three arc welding transformers.

The rectifying diode units are connected with the secondary coil at the lower end of the arc welding transformer, and a freewheeling diode is connected in parallel with the three rectifying diode units in series to prevent the reverse phase high voltage from breaking through the rectifying diode units, and two ends of the three rectifying diode units in series are respectively connected with two ends of the output terminal.

The rectifying diode unit comprises a bridge rectifying circuit formed by four diodes.

The utility model has the following advantages: the power supply device for calibrating the electric arc cutting machine electric parameter detection equipment adopts three direct current series operation, the direct current no-load voltage can reach more than 230V, the output direct current can reach more than 500A, the requirements of the electric arc cutting machine electric parameter detection equipment calibration range are met, and the direct current special power supply for meeting the electric parameters such as voltage, current, power and the like required by the electric arc cutting machine electric parameter detection equipment calibration is obtained in a low-cost mode.

Drawings

Fig. 1 is a circuit schematic of the present utility model.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Accordingly, the following detailed description of the embodiments of the present application, provided in connection with the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application. The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, the utility model specifically relates to a power supply device for calibrating an electric parameter detection device of an arc cutter, which comprises three arc welding direct current power supplies connected in series, wherein each arc welding direct current power supply consists of an arc welding transformer and a rectifier diode unit, a primary coil and a secondary coil of each arc welding transformer are respectively arranged at the upper end and the lower end of the left side and the right side of a square iron core, and a space for a movable iron core to enter and exit is reserved in the middle; the rectifier diode units in each arc welding direct current power supply are connected with the secondary coils of the arc welding transformers, the three rectifier diode units are connected in series, and the primary coils of the three arc welding transformers are connected with each other.

The rectifying diode units are connected with the secondary coil at the lower end of the arc welding transformer, and a freewheeling diode is connected in parallel with the three rectifying diode units connected in series to prevent reverse phase high voltage breakdown of the rectifying diode units caused by distributed inductance such as bending of an external cable, and two ends of the three rectifying diode units connected in series are respectively connected with two ends of an output terminal. The rectifying diode unit comprises a bridge rectifying circuit consisting of four diodes.

Furthermore, the utility model adopts the main body part (without movable iron core part) of the BX1 series AC arc welder transformer and the high-current air-cooled rectifier diode, and each transformer and the diode form a set of arc welding DC power supply with descending characteristic, which is similar to the main transformer and rectifier bridge form of the ZX1 series DC arc welder. Three arc welding direct current power supplies are connected in series through a wiring row and a switch to realize three series operation so as to obtain 230V direct current no-load and over 500A direct current, and input and output current, voltage, power and the like of the three arc welding direct current power supplies can meet the electric parameters required by calibration.

The primary coil and the secondary coil of the transformer are respectively arranged at two sides of the square iron core, and the middle part is a space for the movable iron core to enter and exit (a passage is provided for magnetic leakage). Firstly, the distance between a primary coil and a secondary coil of a transformer is regulated to be basically consistent, each transformer is tested, the distance is finely regulated, the output parameters of each direct current power supply are basically consistent, and the consistent output force during the serial operation is ensured. Testing the output current of each transformer, finely adjusting the distance between the primary coil and the secondary coil to ensure that the output current of each transformer is consistent, and finally, firmly fixing each pancake coil; various parameters are tested by debugging, and the 100A dropping 7V dropping characteristic is particularly concerned, so that the short circuit current is ensured not to exceed 150% of rated current.

The utility model utilizes three movable iron core type (BX 1 series) DC arc welding transformer main bodies and a rectifier bridge to realize the DC power supply device with the descending characteristics of 20A-500A current and 80V-230V voltage.

The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims

1. Electric arc cutting machine electrical parameter check out test set calibration is with power supply unit, its characterized in that: the device comprises three arc welding direct current power supplies which are connected in series, wherein each arc welding direct current power supply consists of an arc welding transformer and a rectifier diode unit, a primary coil and a secondary coil of each arc welding transformer are respectively arranged at the upper end and the lower end of the left side and the right side of a square iron core, and a space for a movable iron core to enter and exit is reserved in the middle; the rectifier diode units in each arc welding direct current power supply are connected with the secondary coils of the arc welding transformers, the three rectifier diode units are connected in series, and the primary coils of the three arc welding transformers are connected with each other.

2. The power supply device for calibrating an electric arc cutting machine electrical parameter detecting apparatus according to claim 1, wherein: the upper primary coils of each arc welding transformer are connected with each other, the lower primary coils of each arc welding transformer are connected with each other, and two ends of an input terminal are respectively connected with the upper primary coils and the lower primary coils of the three arc welding transformers.

3. The power supply device for calibrating an electric arc cutting machine electrical parameter detecting apparatus according to claim 1, wherein: the rectifying diode units are connected with the secondary coil at the lower end of the arc welding transformer, and a freewheeling diode is connected in parallel with the three rectifying diode units in series to prevent the reverse phase high voltage from breaking through the rectifying diode units, and two ends of the three rectifying diode units in series are respectively connected with two ends of the output terminal.

4. A power supply device for calibrating an electric arc cutting machine electrical parameter detecting apparatus according to any one of claims 1-3, characterized in that: the rectifying diode unit comprises a bridge rectifying circuit formed by four diodes.