Partial discharge tester capable of accommodating cable

Abstract

The utility model relates to the technical field of discharge test instruments, in particular to a partial discharge tester capable of accommodating a cable, which comprises a discharge tester body, a winding mechanism, a lead and a plug. A winding mechanism is arranged in the discharge tester body, a wire is arranged in the winding mechanism, the wire penetrates through the inner wall of the discharge tester body and is connected with a plug, and an insulating handle is connected above the plug. According to the partial discharge tester capable of storing the cable, a rotary handle is rotated out of an empty groove, then the rotary handle is rotated to drive a circular plate to drive a ratchet wheel to rotate, a winding drum is driven to wind a wire, and then the partial discharge tester stores the cable; by unscrewing the handle bolt and holding the insulating handle, the universal wheel is placed on a device to be tested for rolling, the ultrasonic sensor is kept on the device to be tested, shaking is prevented, and the stability of the partial discharge tester is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of discharge test instruments, in particular to a partial discharge tester capable of storing cables. Background Art

[0002] Partial discharge tester is an important equipment that is indispensable for ensuring the quality of high-voltage electrical products and the safe operation of power systems. It is suitable for live detection of equipment such as transformers, generators, high-voltage switchgear, and high-voltage cables. Existing partial discharge testers still have certain defects when used, such as;

[0003] Announcement No. CN212749129U proposes a partial discharge tester comprising a main unit and a collection probe for collecting partial discharge signals, the collection probe and the main unit connected via a coaxial cable. The main unit is provided with a display screen for displaying test results and a control panel for inputting parameter information. The main unit is internally provided with a control mechanism for controlling discharge detection. The outputs of the control panel and the collection probe are connected to the input of the control mechanism, which in turn is connected to the input of the display screen. The end of the collection probe is provided with a sensor group for detecting discharge signals, the output of which is connected to the input of the control mechanism. This utility model eliminates the need to replace the detection probe when testing different devices. Instead, a switch button is used to select different sensors for discharge signal detection. Only one device needs to be carried, preventing the detection probe from being messed up or lost, thereby improving detection efficiency.

[0004] In the above document: a coaxial cable is used to connect the host to the acquisition probe and sensor group. The cable needs to be wrapped and bundled when carried, which is troublesome and easy to get tangled, affecting the detection. Based on this, a partial discharge tester with cable storage is proposed to solve the above problem. Utility Model Content

[0005] The purpose of the present invention is to provide a partial discharge tester capable of storing cables, so as to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a partial discharge tester capable of storing cables, comprising: a discharge tester body, a winding mechanism, a wire and a plug;

[0007] The discharge tester body is provided with a winding mechanism, a wire is provided in the winding mechanism, the wire passes through the inner wall of the discharge tester body and is connected to a plug, an insulating handle is connected above the plug, a support mechanism is connected above the insulating handle, and an ultrasonic sensor is provided in the support mechanism;

[0008] The winding mechanism includes: a ratchet, a reel, a baffle, a pawl, a T-shaped tooth plate, a first spring, a circular plate, an empty slot and a rotating handle. The rear part of the inner wall of the discharge tester body is abutted with the ratchet, and the front part of the ratchet is connected to the reel. The reel is rotatably connected to the inner wall of the discharge tester body through a bracket. The wire is wound on the reel, and the front part of the wire is abutted with the baffle, and the baffle is connected to the outside of the reel.

[0009] Preferably, a pawl is engaged on one side of the ratchet, and the pawl is rotatably connected to the inner wall of the discharge tester body.

[0010] Preferably, a T-shaped tooth plate is engaged and connected above the pawl, and the T-shaped tooth plate slides through one side of the inner wall of the discharge tester body, and a first spring is connected to one side of the T-shaped tooth plate, and the first spring is connected to the inner wall of the discharge tester body through a baffle.

[0011] Preferably, the back of the ratchet is connected to a circular plate, which penetrates and rotates on the rear inner wall of the discharge tester body, and a slot is provided on the back of the circular plate, and a rotary handle is rotatably connected to the inner wall of the slot via a hinge.

[0012] Preferably, the supporting mechanism includes: a ball head, a ball slot block, a support plate, a handle bolt, a T-slot barrel, a T-shaped shaft, a universal wheel and a second spring; the upper surface of the insulating handle is connected to the ball head; the outer side of the ball head is rotatably connected to the ball slot block; the upper part of the ball slot block is fixedly connected to the support plate; and the ultrasonic sensor is connected to the upper surface of the support plate.

[0013] Preferably, a handle bolt is threadedly connected to the inner wall of the ball groove block, and the handle bolt abuts against the ball head.

[0014] Preferably, the upper surface of the support plate close to the outer side of the ultrasonic sensor is connected with a T-groove barrel, the inner wall of the T-groove barrel is slidably connected with a T-shaped shaft, and the upper surface of the T-shaped shaft is connected with a universal wheel.

[0015] Preferably, the bottom of the T-shaped shaft is connected to a second spring, and the second spring is connected below the inner wall of the T-slot barrel.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the partial discharge tester capable of storing cables is operated by rotating the rotary handle out of the empty slot, then rotating the rotary handle to drive the circular plate to drive the ratchet to rotate, which drives the reel to reel in the wire, thereby allowing the partial discharge tester to store the cable; by loosening the handle bolt, holding the insulating handle, placing the universal wheel on the device to be tested and rolling it, the ultrasonic sensor is kept on the device to be tested to prevent shaking, thereby improving the stability of the partial discharge tester. The specific contents are as follows:

[0017] 1. Press the T-shaped tooth plate to squeeze the first spring, driving the pawl to move away from the ratchet. Then pull the wire to drive the ratchet to rotate, unwinding the wire. Release the T-shaped tooth plate to drive the pawl to clamp the ratchet. When the wire needs to be retracted, rotate the handle outward, and then rotate the handle to drive the reel to reel the wire, allowing the partial discharge tester to retract the cable.

[0018] 2. Loosen the handle bolt and remove it from the ball head. Then, hold the insulated handle and place the universal wheel on the device to be tested and roll it. Squeeze the second spring to provide cushioning. At the same time, the ball head rotates in the ball slot block to keep the ultrasonic sensor on the device to be tested to prevent shaking, thereby improving the stability of the partial discharge tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the discharge tester of the utility model;

[0021] Figure 3 This is a schematic diagram of the main structure of the T-shaped tooth plate of the utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the ratchet of the utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the circular plate of the utility model;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the ball head of the utility model;

[0025] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the T-slot barrel of the present invention.

[0026] In the figure: 1. Discharge tester body; 2. Winding mechanism; 201. Ratchet; 202. Reel; 203. Baffle; 204. Pawl; 205. T-shaped tooth plate; 206. First spring; 207. Round plate; 208. Empty slot; 209. Rotary handle; 3. Wire; 4. Plug; 5. Insulated handle; 6. Support mechanism; 601. Ball head; 602. Ball slot block; 603. Support plate; 604. Handle bolt; 605. T-slot barrel; 606. T-shaped shaft; 607. Universal wheel; 608. Second spring; 7. Ultrasonic sensor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 5 The utility model provides a technical solution: a partial discharge tester for storing cables, comprising: a discharge tester body 1, a winding mechanism 2, a wire 3 and a plug 4; the discharge tester body 1 is provided with a winding mechanism 2, the wire 3 is provided in the winding mechanism 2, the wire 3 passes through the inner wall of the discharge tester body 1 and is connected to the plug 4, the upper part of the plug 4 is connected to an insulating handle 5, the upper part of the insulating handle 5 is connected to a supporting mechanism 6, and the supporting mechanism 6 is provided with an ultrasonic sensor 7; the winding mechanism 2 comprises: a ratchet 201, a reel 202, a baffle 203, a pawl 204, a T-shaped tooth plate 205, a first spring 206, a circular plate 207, an empty slot 208 and a rotating handle 209, the rear part of the inner wall of the discharge tester body 1 is abutted with the ratchet 201, the front part of the ratchet 201 is connected to the reel 202, and the reel 202 is rotatably connected through the bracket On the inner wall of the discharge tester body 1, the wire 3 is wound on the reel 202, and the front part of the wire 3 is abutted against the baffle 203, and the baffle 203 is connected to the outside of the reel 202. A pawl 204 is engaged on one side of the ratchet 201, and the pawl 204 is rotatably connected to the inner wall of the discharge tester body 1. A T-shaped tooth plate 205 is engaged above the pawl 204, and the T-shaped tooth plate 205 slides through one side of the inner wall of the discharge tester body 1, and a first spring 206 is connected to one side of the T-shaped tooth plate 205. The first spring 206 is connected to the inner wall of the discharge tester body 1 through the baffle, and a circular plate 207 is connected to the back of the ratchet 201. The circular plate 207 rotates through the rear part of the inner wall of the discharge tester body 1, and an empty slot 208 is opened on the back of the circular plate 207. The inner wall of the empty slot 208 is rotatably connected to a handle 209 through a hinge.

[0029] When the wire 3 is to be stored, the handle 209 is rotated out of the slot 208, and the handle 209 is rotated to drive the circular plate 207 to drive the ratchet 201 to rotate, and the reel 202 is driven to reel the wire 3, so that the partial discharge tester can store the cable.

[0030] See Figure 1 、 Figure 2 、 Figure 6 and Figure 7 It can be seen that the support mechanism 6 includes: a ball head 601, a ball groove block 602, a support plate 603, a handle bolt 604, a T-groove barrel 605, a T-shaped shaft 606, a universal wheel 607 and a second spring 608. The upper surface of the insulating handle 5 is connected to the ball head 601, the outer side of the ball head 601 is rotatably connected to the ball groove block 602, and the upper part of the ball groove block 602 is fixedly connected to the support plate 603. The ultrasonic sensor 7 is connected to the upper surface of the support plate 603, and the ball groove block 60 2 is threadedly connected to a handle bolt 604, which abuts against the ball head 601. A T-slot barrel 605 is connected to the upper surface of the support plate 603 near the outside of the ultrasonic sensor 7. A T-shaped shaft 606 is slidably connected to the inner wall of the T-slot barrel 605. A universal wheel 607 is connected to the upper surface of the T-shaped shaft 606. A second spring 608 is connected to the bottom of the T-shaped shaft 606. The second spring 608 is connected to the lower part of the inner wall of the T-slot barrel 605.

[0031] During specific implementation, loosen the handle bolt 604 and remove it from the ball head 601, then hold the insulating handle 5 and place the universal wheel 607 on the device to be tested and roll it, driving the T-shaped shaft 606 to slide in the T-slot barrel 605 and squeeze the second spring 608 for buffering. At the same time, the ball head 601 rotates in the ball slot block 602 and tilts to keep the ultrasonic sensor 7 on the device to be tested to prevent shaking, thereby improving the stability of the partial discharge tester.

[0032] To sum up: when using this partial discharge tester that can store cables, first, press the T-shaped tooth plate 205, open the dust plug at the bottom of the discharge tester body 1 and take out the plug 4, drive the wire 3 to unwind, and then insert the plug 4 into the insulating handle 5, operate the discharge tester body 1 to turn on the power, loosen the handle bolt 604, hold the insulating handle 5 and place the universal wheel 607 on the equipment to be tested and move it, and use the ultrasonic sensor 7 for detection. The high-voltage equipment to be tested releases energy during discharge, thereby generating pressure waves in the medium, forming ultrasonic signals, which penetrate the outer shell of the equipment and are captured by the ultrasonic sensor 7. The ultrasonic sensor 7 captures the captured ultrasonic signals The signal is converted into an electrical signal and transmitted to the discharge tester body 1 through the wire 3. The signal is amplified and filtered by the discharge tester body 1 to remove noise and improve the quality of the signal. The signal is then analyzed to extract characteristic parameters such as amplitude, frequency and waveform. The presence and intensity of partial discharge are determined by analyzing the characteristics of the ultrasonic signal. After the test, the plug 4 is unplugged from the insulating handle 5, and the rotary handle 209 is rotated out of the circular plate 207. The rotary handle 209 is rotated to retract the wire 3 into the discharge tester body 1. At the same time, the plug 4 is retracted into the space at the bottom of the discharge tester body 1 and blocked with a dust plug. The contents not described in detail in this specification belong to the existing technology well known to professional and technical personnel in this field.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A partial discharge tester capable of storing cables, comprising: The discharge tester comprises a body (1), a winding mechanism (2), a wire (3) and a plug (4), characterized in that: A winding mechanism (2) is provided inside the discharge tester body (1), a wire (3) is provided inside the winding mechanism (2), the wire (3) passes through the inner wall of the discharge tester body (1) and is connected to a plug (4), an insulating handle (5) is connected above the plug (4), a support mechanism (6) is connected above the insulating handle (5), and an ultrasonic sensor (7) is provided inside the support mechanism (6); The winding mechanism (2) comprises: a ratchet (201), a reel (202), a baffle (203), a pawl (204), a T-shaped tooth plate (205), a first spring (206), a circular plate (207), a slot (208) and a rotary handle (209); the rear portion of the inner wall of the discharge tester body (1) abuts against the ratchet (201); the front portion of the ratchet (201) is connected to the reel (202); the reel (202) is rotatably connected to the inner wall of the discharge tester body (1) via a bracket; the wire (3) is wound around the reel (202); the front portion of the wire (3) abuts against the baffle (203); and the baffle (203) is connected to the outside of the reel (202).

2. The cable-accommodating partial discharge tester according to claim 1, characterized in that: A pawl (204) is engaged on one side of the ratchet (201), and the pawl (204) is rotatably connected to the inner wall of the discharge tester body (1).

3. The cable-accommodating partial discharge tester according to claim 2, characterized in that: A T-shaped tooth plate (205) is meshed and connected above the ratchet (204), and the T-shaped tooth plate (205) slides through one side of the inner wall of the discharge tester body (1), and a first spring (206) is connected to one side of the T-shaped tooth plate (205), and the first spring (206) is connected to the inner wall of the discharge tester body (1) through a baffle.

4. The cable-storage partial discharge tester according to claim 1, characterized in that: The back of the ratchet (201) is connected to a circular plate (207), which penetrates and rotates on the rear portion of the inner wall of the discharge tester body (1), and a hollow groove (208) is provided on the back of the circular plate (207). A rotary handle (209) is rotatably connected to the inner wall of the hollow groove (208) via a hinge.

5. The cable-storage partial discharge tester according to claim 1, characterized in that: The support mechanism (6) comprises: a ball head (601), a ball slot block (602), a support plate (603), a handle bolt (604), a T-slot barrel (605), a T-shaped shaft (606), a universal wheel (607) and a second spring (608); the upper surface of the insulating handle (5) is connected to the ball head (601); the outer side of the ball head (601) is rotatably connected to the ball slot block (602); the upper part of the ball slot block (602) is fixedly connected to the support plate (603); and the ultrasonic sensor (7) is connected to the upper surface of the support plate (603).

6. The cable-storage partial discharge tester according to claim 5, characterized in that: A handle bolt (604) is threadedly connected to the inner wall of the ball groove block (602), and the handle bolt (604) abuts against the ball head (601).

7. The cable-storage partial discharge tester according to claim 5, characterized in that: The upper surface of the support plate (603) near the outer side of the ultrasonic sensor (7) is connected to a T-groove barrel (605), a T-shaped shaft (606) is slidably connected to the inner wall of the T-groove barrel (605), and a universal wheel (607) is connected to the upper surface of the T-shaped shaft (606).

8. The cable-storage partial discharge tester according to claim 7, characterized in that: The bottom of the T-shaped shaft (606) is connected to a second spring (608), and the second spring (608) is connected below the inner wall of the T-slot barrel (605).

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