Handheld partial discharge tester

Abstract

The utility model provides a hand-held partial discharge tester comprising a tester body, two sides of the tester body are provided with wire boxes, the wire boxes comprise a fixed box and a movable box, the fixed box is fixed on the outer side of the rear end of the tester body, two sides of the front end of the tester body are provided with chutes, the movable box slides along the interiors of the chutes, and the fixed box is fixed on the outer side of the rear end of the tester body. Winding shafts are rotationally installed in the fixed box and the movable box through bearings and torsion springs, through cooperation of the fixed box and the movable box on the two sides of the tester body, the connecting wire is segmented, stored and protected, the installation time is shortened, in addition, the length of the connecting wire at the front end can be locked after the connecting wire is pulled out and unwound, and the testing efficiency is improved. And then, the connecting line at the rear end is unwound to a proper length, so that the stability in the test process is facilitated, the influence of handheld unstable factors can be reduced due to the fact that the connecting line is divided into two sections, and the test result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of partial discharge testers, in particular to a handheld partial discharge tester. Background Art

[0002] The partial discharge tester is a device used for partial discharge testing. It adopts advanced anti-interference components and unique gate display circuits, and has four high-frequency elliptical scans. It is suitable for type and factory tests of high-voltage products, new product development tests, quantitative tests of partial discharge of motors, mutual inductors, cables, bushings, capacitors, transformers, lightning arresters, switches and other high-voltage electrical appliances. It can be used on-site by manufacturers, scientific research departments, and power departments. Batteries need to be maintained regularly during use, and the battery performance is tested by the battery discharge tester. However, the data accuracy of existing battery discharge testers is not high, and they are large in size and inconvenient to use.

[0003] Patent CN214335112U proposes a highly sensitive handheld partial discharge tester. The other end of the positive wiring is connected to the positive electrode of the battery under test, and the other end of the negative wiring is connected to the negative electrode of the battery under test to discharge the battery. After power is turned on, the PTC ceramic resistor emits ultrasonic waves under the action of the current. An ultrasonic sensor is installed in the chassis, and the opening of the ultrasonic sensor is facing the PTC ceramic resistor. The ultrasonic sensor is connected to a CPU module, and the CPU module is connected to a display screen. The ultrasonic sensor collects ultrasonic information emitted by the PTC ceramic resistor and sends the ultrasonic information to the CPU module. The CPU module processes the ultrasonic information and sends the waveform to the display screen. The user obtains basic data of the battery under test based on the data and waveform displayed on the display screen.

[0004] In the above scheme, the test is performed after the positive and negative poles are connected to the battery. However, for a handheld partial discharge tester, this technology first needs to be connected to the battery before the test. In addition, the handheld device may be disconnected from the connection end of the battery due to poor hand stability, and cannot be used for stable testing. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a handheld partial discharge tester to solve the problems raised in the above-mentioned background technology. The utility model has a novel structure. Through the cooperation of the fixed box and the movable box on both sides of the tester body, the connecting wires are segmented and stored for protection, thereby reducing the installation time. In addition, the length of the front connecting wire can be locked after being pulled out and unwound, and then the rear connecting wire can be unwound to an appropriate length, thereby facilitating stability during the test. In addition, the handheld instability factor will be reduced because the connecting wire is divided into two sections, making the test structure more accurate.

[0006] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a handheld partial discharge tester, including a tester body, wire boxes are arranged on both sides of the tester body, and the wire boxes include a fixed box and a movable box, the fixed box is fixed to the outer side of the rear end of the tester body, and slide grooves are opened on both sides of the front end of the tester body, and the movable box slides along the inside of the slide grooves, and the fixed box and the movable box are both rotatably installed with a winding shaft through bearings and torsion springs, and a connecting wire is wound on the surface of the winding shaft, the winding shaft of the movable box passes through the box body, and the upper and lower ends of the movable box corresponding to the winding shaft passing through are provided with clamping frames, and the clamping frame is in compression contact with the surface of the winding shaft.

[0007] Furthermore, a front plate is rotatably mounted on the front end of the mobile box through a rotating shaft and a torsion spring, a plug-in end is fixed to one end of the connecting line facing the front plate, a mobile notch is opened at the bottom of the mobile box, and a push block is slidably inserted in the mobile notch, and the plug-in end is fixed through the push block.

[0008] Furthermore, a slide rod is slidably inserted into the outer wall of the movable box corresponding to the clamping frame through a spring, and the slide rod is fixedly connected to the clamping frame.

[0009] Furthermore, a transverse plate is fixed to one side of the clamp frame facing the fixed box, and an inclined block is fixed to the outer end of the transverse plate. A triangular plate is fixed to the outer side of the fixed box, and the inclined block is in sliding contact with two inclined surfaces of the triangular plate.

[0010] Furthermore, a plug plate is fixed on the outer wall of the movable box, and a slot is provided on the inner surface of the triangular plate at a position corresponding to the plug plate, and the plug plate can be slidably inserted into the interior of the triangular plate.

[0011] Furthermore, one end of the connecting wire in the fixed box is connected to the tester body, and the other end of the connecting wire in the fixed box is connected to the connecting wire in the movable box.

[0012] Furthermore, a spring bracket is fixed to the bottom of the front end of the tester body, and the bottom of the moving box can be clamped on the spring bracket.

[0013] Furthermore, a strap is fixed to the bottom of the tester body, and the strap is elastic.

[0014] Beneficial effects of the utility model: The utility model is a handheld partial discharge tester, comprising a tester body; a slide groove; a binding belt; a wire box; a fixed box; a movable box; a spring clamp; a front plate; a triangular plate; a reel; a slide bar; a clamp frame; a horizontal plate; an inclined block; a plug-in plate; a movable notch; a connecting line; a plug-in end; a push block;

[0015] 1. The utility model fixes the bottom of the mobile box by spring clamping, cooperates with the plug-in plate and the triangle plate to complete the limiting effect on the mobile box. By pushing the push block along the moving notch, the connecting wire in the mobile box can be unwound, and the plug-in end pushes the front plate open and pulls it out.

[0016] 2. In the utility model, when the mobile box is retracted to the side of the tester body, the inclined block contacts the triangular plate, and the mobile box is pushed backward manually. In cooperation with the reeling shaft in the fixed box reeling in the connecting wire, the inclined block slides along the inclined surface of the triangular plate, and then the two sets of clamping frames and the sliding rod slide along the outer surface of the mobile box away from the reeling shaft. At this time, the reeling shaft can retract the released connecting wire through the torsion spring.

[0017] 3. Compared with the prior art, the utility model divides the connecting wires into sections and stores them for protection through the cooperation of the fixed box and the movable box on both sides of the tester body, thereby reducing the installation time. In addition, the length of the front connecting wire can be locked after being pulled out and unwound, and then the rear connecting wire can be unwound to an appropriate length, thereby facilitating stability during the test. The handheld instability factor will be reduced because the connecting wire is divided into two sections, making the test results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a handheld partial discharge tester of the utility model;

[0019] Figure 2 This is a schematic diagram of the bottom structure of a tester body of a handheld partial discharge tester of the utility model;

[0020] Figure 3 This is a schematic diagram of the outer surface structure of a mobile box of a handheld partial discharge tester of the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the internal structure of a mobile box of a handheld partial discharge tester.

[0022] In the figure: 1. Tester body; 11. Slide; 12. Binding strap; 2. Wire box; 21. Fixed box; 22. Moving box; 23. Spring bracket; 24. Front plate; 25. Triangular plate; 26. Winding shaft; 27. Slide bar; 28. Clamp frame; 29. ​​Cross plate; 210. Oblique block; 211. Insert plate; 212. Moving notch; 3. Connecting wire; 31. Plug terminal; 32. Push block. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] See also Figures 1 to 4The utility model provides a technical solution: a handheld partial discharge tester, comprising a tester body 1, a wire box 2 is arranged on both sides of the tester body 1, and the wire box 2 comprises a fixed box 21 and a movable box 22, the fixed box 21 is fixed to the outer side of the rear end of the tester body 1, and a slide groove 11 is opened on both sides of the front end of the tester body 1, and the movable box 22 slides along the inside of the slide groove 11, and the inside of the fixed box 21 and the movable box 22 are both rotatably installed with a reel 26 through a bearing and a torsion spring, and a connecting wire 3 is reeled on the surface of the reel 26, The winding shaft 26 of the mobile box 22 passes through the box body, and the upper end and the lower end of the mobile box 22 corresponding to the winding shaft 26 are provided with a clamping frame 28, and the clamping frame 28 squeezes and contacts the surface of the winding shaft 26. The bottom of the tester body 1 is fixed with a strap 12, and the strap 12 is elastic. When using the device, the connecting wire 3 in the mobile box 22 is unwound and sent out to connect with the battery, and then the human hand holds the tester body 1 stably through the strap 12 for testing. During the process, the connection of the two sets of connecting wires 3 can reduce the disconnection of the battery connection terminal caused by hand shaking.

[0025] In this embodiment, the front end of the mobile box 22 is rotatably mounted with a front plate 24 through a rotating shaft and a torsion spring, and a plug-in end 31 is fixed to one end of the connecting line 3 facing the front plate 24. A moving notch 212 is provided at the bottom of the mobile box 22, and a push block 32 is slidably inserted in the moving notch 212, and the plug-in end 31 is fixedly passed through the push block 32. A spring clamp 23 is fixed to the bottom of the front end of the tester body 1, and the bottom of the mobile box 22 can be clamped on the spring clamp 23. After the mobile box 22 is retracted to the side of the tester body 1, the bottom of the mobile box 22 is clamped and fixed by the spring clamp, and the plug-in plate 211 is plugged into the triangular plate 25 to complete the limiting effect of the mobile box 22. By pushing the push block 32 along the moving notch 212, the connecting line 3 in the mobile box 22 can be unwound, and the plug-in end 31 pushes the front plate 24 open and pulls it out.

[0026] In this embodiment, a slide bar 27 is inserted into the outer wall of the movable box 22 corresponding to the clamping frame 28 through a spring sliding movement, and the slide bar 27 is fixedly connected to the clamping frame 28, a horizontal plate 29 is fixed to the side of the clamping frame 28 facing the fixed box 21, and an inclined block 210 is fixed to the outer end of the horizontal plate 29, a triangular plate 25 is fixed to the outer side of the fixed box 21, and the inclined block 210 is in sliding contact with the two inclined surfaces of the triangular plate 25, an inserting plate 211 is fixed to the outer wall of the movable box 22, and a slot is provided on the inner surface of the triangular plate 25 at a position corresponding to the inserting plate 211, and the inserting plate 211 can be slidably inserted into the inside of the triangular plate 25, and when the movable box 22 is retracted to the side of the tester body 1, the inclined block 210 is in sliding contact with the two inclined surfaces of the triangular plate 25. The block 210 contacts the triangular plate 25, and the mobile box 22 is pushed backward manually. In cooperation with the winding shaft 26 in the fixed box 21 for winding the connecting wire 3, the inclined block 210 slides along the inclined surface of the triangular plate 25, and then slides the two sets of clamping frames 28 and the slide bar 27 along the outer surface of the mobile box 22 away from the winding shaft 26. At this time, the winding shaft 26 can retract the released connecting wire 3 through the torsion spring. This process can also be used when the device is first used. First, the connecting wire 3 in the mobile box 22 is released and connected to the positive and negative poles of the battery, and then the mobile box 22 is pushed out. Under the action of the slide bar 27 and the spring, the clamping frame 28 is clamped on the winding shaft 26 to limit the connecting wire 3 released from the mobile box 22.

[0027] In this embodiment, one end of the connecting wire 3 in the fixed box 21 is connected to the tester body 1, and the other end of the connecting wire 3 in the fixed box 21 is connected to the connecting wire 3 in the mobile box 22. The connecting wire 3 is divided into two groups and stored in two boxes and connected. First, the length of the connecting wire 3 released can meet the test of equipment at a distant location. In addition, the front end of the connecting wire 3 is connected to the equipment to be tested, and the rear end is connected to the tester body 1, thereby reducing the traction force on the battery connection end caused by human hand shaking.

[0028] When using the device, the connecting wire 3 in the mobile box 22 is unwound and sent out to connect with the battery, and then the person holds the tester body 1 stably by the strap 12 for testing. During the process, the connection of the two sets of connecting wires 3 can reduce the disconnection of the battery connection end caused by the shaking of the hand. When the mobile box 22 is retracted to the side of the tester body 1, the inclined block 210 contacts the triangular plate 25, and the mobile box 22 is manually pushed backward, and the winding shaft 26 in the fixed box 21 winds up the connecting wire 3, and the inclined block 210 moves along the three The inclined surface of the angle plate 25 slides, and then the two sets of clamping frames 28 and the sliding rod 27 slide along the outer surface of the mobile box 22 away from the winding shaft 26. At this time, the winding shaft 26 can retract the released connecting wire 3 through the torsion spring. This process can also be used when the device is just being used. First, the connecting wire 3 in the mobile box 22 is released and connected to the positive and negative poles of the battery. Then, the mobile box 22 is pushed out. Under the action of the sliding rod 27 and the spring, the clamping frame 28 is clamped on the winding shaft 26 to limit the connecting wire 3 released from the mobile box 22.

[0029] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A handheld partial discharge tester, comprising a tester body (1), characterized in that: A wire box (2) is provided on both sides of the tester body (1), and the wire box (2) includes a fixed box (21) and a movable box (22), wherein the fixed box (21) is fixed to the outer side of the rear end of the tester body (1), and slide grooves (11) are provided on both sides of the front end of the tester body (1), and the movable box (22) slides along the inside of the slide grooves (11), and a winding shaft (26) is rotatably installed inside the fixed box (21) and the movable box (22) through bearings and torsion springs, and a connecting wire (3) is wound on the surface of the winding shaft (26), and the winding shaft (26) of the movable box (22) passes through the box body, and a clamping frame (28) is provided at the upper end and the lower end of the movable box (22) corresponding to the winding shaft (26) passing through, and the clamping frame (28) is in compression contact with the surface of the winding shaft (26).

2. A handheld partial discharge tester according to claim 1, characterized in that: The front end of the moving box (22) is rotatably mounted with a front plate (24) via a rotating shaft and a torsion spring, a plug-in end (31) is fixed to one end of the connecting line (3) facing the front plate (24), a moving notch (212) is provided at the bottom of the moving box (22), a push block (32) is slidably inserted in the moving notch (212), and the plug-in end (31) is fixedly passed through the push block (32).

3. A handheld partial discharge tester according to claim 1, characterized in that: A slide bar (27) is slidably inserted into the outer wall of the movable box (22) corresponding to the clamping frame (28) via a spring, and the slide bar (27) is fixedly connected to the clamping frame (28).

4. A handheld partial discharge tester according to claim 3, characterized in that: A transverse plate (29) is fixed to one side of the clamp frame (28) facing the fixed box (21), and an inclined block (210) is fixed to the outer end of the transverse plate (29). A triangular plate (25) is fixed to the outer side of the fixed box (21), and the inclined block (210) is in sliding contact with two inclined surfaces of the triangular plate (25).

5. A handheld partial discharge tester according to claim 4, characterized in that: An inserting plate (211) is fixed on the outer wall of the moving box (22), and a slot is provided on the inner surface of the triangular plate (25) at a position corresponding to the inserting plate (211), and the inserting plate (211) can be slidably inserted into the interior of the triangular plate (25).

6. A handheld partial discharge tester according to claim 1, characterized in that: One end of the connecting wire (3) in the fixed box (21) is connected to the tester body (1), and the other end of the connecting wire (3) in the fixed box (21) is connected to the connecting wire (3) in the movable box (22).

7. A handheld partial discharge tester according to claim 1, characterized in that: A spring bracket (23) is fixed to the bottom of the front end of the tester body (1), and the bottom of the moving box (22) can be clamped on the spring bracket (23).

8. A handheld partial discharge tester according to claim 1, characterized in that: A binding strap (12) is fixed to the bottom of the tester body (1), and the binding strap (12) is elastic.

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