Device for detecting high-voltage pinhole and withstand voltage of winding wire

Abstract

The utility model discloses a winding wire high-voltage pinhole and withstand voltage detection device, which comprises a power supply host, and the front surface of the power supply host is provided with an anti-falling assembly for preventing a connecting wire from falling off. According to the utility model, the brush head of the electric brush is changed, the steel ball groove is additionally arranged, the steel ball groove is connected and conducted with a test sample, the bent or wound sample is placed in a steel ball groove container, one end of the sample without insulation and one end of a copper ball are respectively electrified, and test voltage is applied between a specified conductor and a metal ball; and when the detected leakage current is greater than the judgment current, the test voltage is cut off instantaneously, and an audible and visual alarm is given out, so that the withstand voltage strength of the detected piece is determined, the precision and the efficiency of high-voltage pinhole defect detection on the surface of the enameled wire are improved, and the withstand voltage detection under the condition of non-standard sample preparation of large-specification enameled round and flat wires is realized. And the high-standard requirement of modern electrical equipment on the winding wire quality is met.

Description

Technical Field

[0001] The utility model relates to the technical field of power detection equipment, in particular to a high-voltage pinhole and withstand voltage detection device for winding wires. Background Technique

[0002] The high-voltage pinhole detection of winding wires mainly utilizes the principle of high-voltage discharge. By applying a high voltage and observing whether there is a discharge phenomenon, it is detected whether there are pinholes in the winding wires. Generally, a device with high-voltage output and discharge detection functions is used to complete this process. The pinhole detection requires the device to have a high discharge capacity and accurate detection sensitivity. The withstand voltage detection of winding wires is to apply a high voltage to the winding wires and maintain it for a period of time, and observe whether the winding wires can withstand the voltage without breakdown. This process requires a device with high-voltage output and current monitoring functions to ensure that the withstand voltage strength of the winding wires meets the design requirements.

[0003] However, the existing devices still have the following defects:

[0004] When the existing devices are in use, traditional detection devices may require a relatively complex setting and debugging process. During the use process, parameters need to be manually adjusted and the results need to be monitored, which increases the operation difficulty and time cost, and the detection accuracy and efficiency need to be improved. Therefore, we need to propose a high-voltage pinhole and withstand voltage detection device for winding wires. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-voltage pinhole and withstand voltage detection device for winding wires. By changing the brush head of the electric brush and adding a steel ball groove, it aims to improve the accuracy and efficiency of detecting the high-voltage pinhole defects on the surface of enameled wires, and solve the withstand voltage detection in the case of non-standard sample preparation of large-sized round and flat enameled wires, so as to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-voltage pinhole and withstand voltage detection device for winding wires includes a power supply host, and an anti-detachment component for preventing the connection wire from detaching is arranged on the front surface of the power supply host;

[0008] A high-voltage output wire is arranged on the front surface of the power supply host, a current return wire is arranged on the front surface of the power supply host, one end of the current return wire is fixedly connected with a brush head made of copper wire, and a winding component for facilitating the winding of the high-voltage output wire and the current return wire is arranged on the outer sides of the high-voltage output wire and the current return wire;

[0009] A steel ball groove is jointly arranged on the outside of the high-voltage output wire and the brush head made of copper wire. A plurality of experimental steel balls are arranged inside the steel ball groove. A winding workpiece is arranged inside the plurality of experimental steel balls. The winding workpiece is respectively in contact with the high-voltage output wire and the brush head made of copper wire.

[0010] Preferably, the anti-detachment component includes a plurality of limiting semi-rings slidably connected to the outside of the power supply host. Slide rods are fixedly connected to the outside of the plurality of limiting semi-rings. Fixing plates are slidably connected to the outside of the slide rods. The fixing plates are fixedly connected to the power supply host. A tension spring is sleeved on the outside of the slide rods. A moving disk is fixedly connected to one end of the slide rod.

[0011] Preferably, chamfering is performed inside the plurality of limiting semi-rings, and the plurality of limiting semi-rings are respectively slidably connected to the high-voltage output wire and the current return wire.

[0012] Preferably, the winding component includes two winding shells arranged in the middle of the high-voltage output wire and the current return wire. Winding rollers are rotatably connected inside the two winding shells. The two winding rollers are respectively fixedly connected to the high-voltage output wire and the current return wire. Motors are fixedly connected to the upper ends of the two winding shells.

[0013] Preferably, rollers are arranged on both sides of the two winding rollers. The two rollers penetrate through the installation shell and are fixedly connected to the output shaft of the motor.

[0014] Preferably, wire passing grooves are formed on the side walls of the two winding shells. The wire passing grooves are respectively slidably connected to the high-voltage output wire and the current return wire.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] By changing the brush head and adding a steel ball groove, the steel ball groove is connected and conducted with the test sample. The bent or wound test specimen is placed in the steel ball groove container. Electricity is respectively applied to the test specimen with one end of the insulation removed and the copper ball end. A test voltage is applied between the specified conductor and the metal ball. If the detected leakage current is less than the preset value, the instrument passes the test. When the detected leakage current is greater than the determination current, the test voltage is instantaneously cut off and an audible and visual alarm is issued, so as to determine the withstand voltage strength of the tested part, aiming to improve the accuracy and efficiency of the detection of high-voltage pinhole defects on the surface of enameled wire, and solve the withstand voltage detection in the case of non-standard sample preparation of large-sized round and flat enameled wires, so as to meet the high-standard requirements of modern electrical equipment for the quality of winding wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the change of the pinhole detection of the present utility model;

[0018] Figure 2Schematic diagram of the voltage withstand test of the present utility model;

[0019] Figure 3 Schematic diagram of the structure of the anti - shedding component of the present utility model;

[0020] Figure 4 Schematic diagram of the structure of the winding component of the present utility model.

[0021] In the figure: 1. Power supply main body; 2. Anti - shedding component; 21. Limit semi - ring; 22. Slide bar; 23. Fixed plate; 24. Tension spring; 25. Moving plate; 3. High - voltage output line; 4. Winding component; 41. Winding shell; 42. Winding roller; 43. Motor; 44. Wire groove; 5. Current return line; 6. Brush head made of copper wire; 7. Steel ball groove; 8. Experimental steel ball; 9. Winding workpiece. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0024] A high - voltage pinhole and voltage withstand detection device for winding wires, comprising a power supply main body 1, and an anti - shedding component 2 for preventing the connection wire from detaching is arranged on the front surface of the power supply main body 1;

[0025] A high - voltage output line 3 is arranged on the front surface of the power supply main body 1, a current return line 5 is arranged on the front surface of the power supply main body 1, one end of the current return line 5 is fixedly connected with a brush head 6 made of copper wire, and a winding component 4 for facilitating the accommodation of the high - voltage output line 3 and the current return line 5 is arranged on the outer sides of the high - voltage output line 3 and the current return line 5;

[0026] A steel ball groove 7 is jointly arranged on the outer sides of the high - voltage output line 3 and the brush head 6 made of copper wire, a plurality of experimental steel balls 8 are arranged inside the steel ball groove 7, a winding workpiece 9 is arranged inside the plurality of experimental steel balls 8, and the winding workpiece 9 is in contact with the high - voltage output line 3 and the brush head 6 made of copper wire respectively.

[0027] The anti - shedding component 2 includes a plurality of limit semi - rings 21 slidably connected to the outer side of the power supply main body 1, slide bars 22 are fixedly connected to the outer sides of the plurality of limit semi - rings 21, fixed plates 23 are slidably connected to the outer sides of the slide bars 22, the fixed plates 23 are fixedly connected with the power supply main body 1, tension springs 24 are sleeved on the outer sides of the slide bars 22, and moving plates 25 are fixedly connected to one ends of the slide bars 22.

[0028] Exemplarily, the limiting semi-ring 21 limits the plugs of the high-voltage output line 3 and the current return line 5 to prevent the plugs from loosening. The tension spring 24 uses tension to drive the moving disk 25 to move towards the limiting semi-ring 21, drives the limiting semi-ring 21 to move through the sliding rod 22, so that the two correspondingly distributed limiting semi-rings 21 limit the plugs.

[0029] Chamfering treatments are performed inside multiple limiting semi-rings 21, and the multiple limiting semi-rings 21 are respectively slidably connected to the high-voltage output line 3 and the current return line 5.

[0030] Exemplarily, after the chamfering treatment, it is convenient for the plug to be inserted.

[0031] The winding assembly 4 includes two winding cases 41 arranged in the middle of the high-voltage output line 3 and the current return line 5. Winding rollers 42 are rotatably connected inside the two winding cases 41. The two winding rollers 42 are respectively fixedly connected to the high-voltage output line 3 and the current return line 5. Motors 43 are fixedly connected to the upper ends of the two winding cases 41.

[0032] Exemplarily, the motor 43 drives the winding roller 42 to rotate, and the winding roller 42 winds the high-voltage output line 3 and the current return line 5, which is convenient for the storage of the high-voltage output line 3 and the current return line 5.

[0033] Rollers are arranged on both sides of the two winding rollers 42, and the two rollers penetrate through the installation shell and are fixedly connected to the output shafts of the motors 43.

[0034] Exemplarily, the rollers facilitate the rotation of the winding roller 42 inside the winding case 41.

[0035] Through grooves 44 are formed in the side walls of the two winding cases 41, and the through grooves 44 are respectively slidably connected to the high-voltage output line 3 and the current return line 5.

[0036] Exemplarily, the through grooves 44 facilitate the sliding of the high-voltage output line 3 and the current return line 5 inside the winding case 41.

[0037] Working principle: When the utility model is in use, the power supply host 1 is connected to the high-voltage output line 3. Detection parameters are set through the power supply host 1 to start the detection. The power supply host 1 outputs a stable high-voltage power supply according to the set voltage value and transmits it through the high-voltage output line 3. The high-voltage output line 3 is connected to the brush head 6 made of copper wire or the steel ball groove 7. The high-voltage output line 3 transmits the AC (DC) high voltage to the brush head 6 made of copper wire or the steel ball groove 7; the power supply host 1 is connected to the high-voltage output line 3. Detection parameters are set through the power supply host 1 to start the detection. The power supply host 1 outputs a stable high-voltage power supply according to the set voltage value and transmits it through the high-voltage output line 3. The high-voltage output line 3 is connected to the brush head 6 made of copper wire or the steel ball groove 7. The high-voltage output line 3 transmits the AC (DC) high voltage to the brush head or the steel ball groove 7; the brush head 6 made of copper wire is connected and conducted with the winding workpiece 9. The AC (DC) high voltage is applied to the test sample to detect the high-voltage pinholes and withstand voltage performance of the winding wire. The current return line 5 is connected to the brush head 6 made of copper wire or the steel ball groove 7. The leakage current generated by the tested sample under the test high voltage output by the withstand voltage tester returns to the power supply host 1; the brush head 6 made of copper wire is connected and conducted with the test sample. The high-voltage pinhole detection is carried out by optimizing the high-voltage probe. The probe is replaced with a 20*5CM handheld brush head made of phosphor copper wire to brush the surface of the winding workpiece 9 to detect the high-voltage pinhole defects of the winding wire; the steel ball groove 7 is connected and conducted with the test sample. The bent or wound winding workpiece 9 is placed in the container of the steel ball groove 7, and at least 5 mm thick experimental steel balls 8 are filled around. The sample ends respectively extend long enough to avoid flashover. The test voltage is applied between the conductor and the metal ball after the insulation end sample and the copper ball end are energized respectively. If the detected leakage current is less than the preset value, the instrument passes the test. When the detected leakage current is greater than the judgment current, the test voltage is instantaneously cut off and an audible and visual alarm is issued to determine the withstand voltage strength of the tested part;

[0038] The limit semi-ring 21 limits the plugs of the high-voltage output line 3 and the current return line 5 to prevent the plugs from loosening. The tension spring 24 uses the tension to drive the moving disk 25 to move towards the limit semi-ring 21, drives the limit semi-ring 21 to move through the sliding rod 22, and enables the two limit semi-rings 21 distributed correspondingly to limit the plugs. The motor 43 drives the winding roller 42 to rotate, and the winding roller 42 winds up the high-voltage output line 3 and the current return line 5 to facilitate the storage of the high-voltage output line 3 and the current return line 5.

[0039] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A winding wire high voltage pinhole and withstand voltage detection device, comprising a power supply host (1), characterized in that: The front side of the power supply host (1) is provided with an anti-drop component (2) for preventing the connection line from falling off; A high-voltage output line (3) is arranged on the front of the power supply main unit (1), and a current return line (5) is arranged on the front of the power supply main unit (1). One end of the current return line (5) is fixedly connected to a brush head (6) made of copper wire. The outer sides of the high-voltage output line (3) and the current return line (5) are both provided with a winding assembly (4) for accommodating the high-voltage output line (3) and the current return line (5); The high-voltage output line (3) and the outer side of the brush head (6) made of copper wire are jointly provided with a steel ball groove (7), a plurality of experimental steel balls (8) are arranged inside the steel ball groove (7), a winding workpiece (9) is arranged inside the plurality of experimental steel balls (8), and the winding workpiece (9) is in contact with the high-voltage output line (3) and the brush head (6) made of copper wire, respectively.

2. A winding wire high voltage pinhole and withstand voltage detection device according to claim 1, characterized in that: The anti-falling component (2) comprises a plurality of limiting half rings (21) slidably connected to the outside of the power supply main unit (1); the outsides of the plurality of limiting half rings (21) are fixedly connected to a sliding rod (22); the outsides of the sliding rods (22) are slidably connected to a fixing plate (23); the fixing plate (23) is fixedly connected to the power supply main unit (1); the outside of the sliding rod (22) is sleeved with a tension spring (24); and one end of the sliding rod (22) is fixedly connected to a moving disk (25).

3. A winding wire high voltage pinhole and withstand voltage detection device according to claim 2, characterized in that: The interiors of the plurality of limiting semi-rings (21) are all chamfered, and the plurality of limiting semi-rings (21) are respectively slidably connected to the high-voltage output line (3) and the current return line (5).

4. A winding wire high voltage pinhole and withstand voltage detection device according to claim 1, characterized in that: The winding assembly (4) comprises two winding shells (41) arranged in the middle of the high-voltage output line (3) and the current return line (5), the interiors of the two winding shells (41) are rotatably connected to winding rollers (42), the two winding rollers (42) are respectively fixedly connected to the high-voltage output line (3) and the current return line (5), and the upper ends of the two winding shells (41) are fixedly connected to motors (43).

5. A winding wire high voltage pinhole and withstand voltage detection device according to claim 4, characterized in that: Rolling shafts are provided on both sides of the two winding rollers (42), and the two rolling shafts penetrate the mounting shell and are fixedly connected to the output shaft of the motor (43).

6. A winding wire high voltage pinhole and withstand voltage detection device according to claim 4, characterized in that: The side walls of the two winding shells (41) are each provided with a wire passing groove (44), and the wire passing groove (44) is respectively slidably connected to the high-voltage output line (3) and the current return line (5).

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