Partial discharge tester grounding mechanism
By designing a grounding mechanism of a partial discharge tester including a protective mechanism, the problem of the grounding wire being connected to the grounding device before use is solved, ensuring stable contact between the grounding wire and the grounding rod, and improving detection accuracy and reliability .
Patent Information
- Application Number
- CN202420933577.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Before use, existing partial discharge testers need to connect the grounding wire to the grounding device in the test site. However, the grounding rod welding point lacks protective devices, which may cause the grounding wire to fall off, affecting the detection effect.
A partial discharge tester grounding mechanism is designed, including grounding rod, metal hoisting ring, protective mechanism, etc. The protection mechanism is composed of a fixed seat, protective sleeve, positioning ring, clamping plate, limiting block, anti-slip plate, return spring and pull rod , through these structures, the grounding wire is prevented from loosening.
It effectively prevents the grounding wire from falling off during use, ensures stable contact between the grounding wire and the ground rod, and improves the detection accuracy and reliability of the partial discharge tester.
Smart Images
Figure CN222530824U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of partial discharge testers, in particular to a grounding mechanism for a partial discharge tester. Background Art
[0002] The partial discharge tester adopts advanced anti-interference components and unique gate display circuit, 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. The existing ground wire needs to be connected to the grounding device in the test field before use.
[0003] In the existing method, the grounding device welds all the ground wires in series to the ground rod, and then buries the ground rod under the ground to eliminate static electricity. However, the welding point of the ground rod lacks a protective device, which causes the ground wire to fall off, resulting in poor contact between the ground wire and the ground rod, thereby affecting the detection effect of the partial discharge tester. Therefore, a grounding mechanism for a partial discharge tester is proposed to solve the above-mentioned problem. Utility Model Content
[0004] In view of the shortcomings of the prior art, the utility model provides a grounding mechanism for a partial discharge tester, which has the advantage of preventing the grounding wire from falling off, and solves the problem that the grounding wire may fall off due to the lack of a protective device at the welding point of the grounding rod, resulting in poor contact between the grounding wire and the grounding rod, thereby affecting the detection effect of the partial discharge tester.
[0005] To achieve the above object, the utility model provides the following technical solutions: a grounding mechanism of a partial discharge tester, comprising a tester body, the outside of the tester body is connected with a grounding wire, a grounding rod is arranged on the left side of the tester body, a metal hanging ring is fixedly installed on the top of the grounding rod, and a protective mechanism is arranged on the top of the grounding rod;
[0006] The protective mechanism includes a fixed seat, a protective sleeve, a positioning ring, a clamping plate, a limit block, an anti-slip plate, a reset spring and a pull rod. A fixed seat is arranged on the top of the grounding rod, a protective sleeve is arranged on the top of the fixed seat, a positioning ring is installed inside the protective sleeve, a clamping plate is movably installed inside the positioning ring, the top and bottom of the clamping plate are fixedly connected to the limit block, an anti-slip plate is installed outside the clamping plate, a reset spring is arranged inside the positioning ring, and a pull rod is installed inside the positioning ring.
[0007] Furthermore, a positioning cone is fixedly installed at the bottom of the ground rod, an insert block is fixedly installed outside the positioning cone, and the fixing seat is sleeved on the outside of the metal hanging ring.
[0008] Furthermore, the protective sleeve is threadedly connected to the fixing seat, the side of the grounding wire away from the tester body is interconnected with the metal hanging ring, and horizontal plates are fixedly installed on the left and right sides of the protective sleeve, and fastening bolts are provided inside the two horizontal plates.
[0009] Furthermore, the grounding wire passes through the positioning ring and extends to the outside of the protective sleeve. The number of the clamping plates is two, and the two clamping plates are respectively located on the left and right sides of the grounding wire.
[0010] Furthermore, the opposite sides of the two anti-slip plates are respectively connected to the opposite sides of the two clamping plates, four sliding grooves are opened inside the positioning ring, and the four limit blocks extend from one side away from the two clamping plates to the inside of the four sliding grooves respectively.
[0011] Furthermore, there are four return springs in total, and the four return springs are divided into two groups, and the number of return springs in each group is two. The opposite sides of the two groups of return springs are respectively connected to the opposite sides of the two clamping plates, and the sides of the two pull rods away from the two clamping plates extend to the outside of the protective cover.
[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0013] 1. The grounding mechanism of the partial discharge tester performs a discharge test on the designated equipment by setting the tester body. A grounding wire is set, one end of the grounding wire is connected to the tester body and the other end is connected to the grounding rod. When in use, the grounding rod is inserted into the ground to ground the tester body, so that the tester body can be used normally. By setting a protective structure and cooperating with each other, the connection between the grounding wire and the grounding rod can be protected to prevent the grounding wire from loosening due to pulling and dragging, thereby affecting the detection accuracy.
[0014] 2. The grounding mechanism of the partial discharge tester protects the metal ring by setting a fixing seat, and is convenient for fixing the protective cover. The grounding wire is initially positioned by setting a positioning ring. The grounding wire can be further fixed by setting a clamping plate and the clamping plate cooperates with two anti-slip plates to prevent the grounding wire from loosening. The limit blocks are set, and when the user pulls the pull rod, the two clamping plates will move. At this time, the clamping plates can be limited by two sets of limit blocks to keep the clamping plates moving more smoothly. The pull rod can be locked by turning the fastening bolts. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0016] Figure 2It is a cross-sectional schematic diagram of the utility model;
[0017] Figure 3 This is a schematic diagram of the protection mechanism of the utility model;
[0018] Figure 4 For this utility model Figure 3 Enlarged schematic diagram at point A in the middle.
[0019] In the figure: 1 tester body, 2 grounding wire, 3 grounding rod, 4 metal lifting ring, 5 protection mechanism, 501 fixing seat, 502 protective cover, 503 positioning ring, 504 clamping plate, 505 limit block, 506 anti-skid plate, 507 reset spring, 508 pull rod, 6 positioning cone, 7 fastening bolt. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-4 A grounding mechanism of a partial discharge tester comprises a tester body 1, a grounding wire 2 is connected to the outside of the tester body 1, a grounding rod 3 is arranged on the left side of the tester body 1, a metal hanging ring 4 is fixedly installed on the top of the grounding rod 3, and a protective mechanism 5 is arranged on the top of the grounding rod 3;
[0022] The protection mechanism 5 includes a fixed seat 501, a protective sleeve 502, a positioning ring 503, a clamping plate 504, a limit block 505, an anti-slip plate 506, a reset spring 507 and a pull rod 508. The top of the grounding rod 3 is provided with a fixed seat 501, the top of the fixed seat 501 is provided with a protective sleeve 502, the inside of the protective sleeve 502 is installed with a positioning ring 503, the inside of the positioning ring 503 is movably installed with a clamping plate 504, the top and bottom of the clamping plate 504 are fixedly connected to the limit block 505, the outside of the clamping plate 504 is installed with an anti-slip plate 506, the inside of the positioning ring 503 is provided with a reset spring 507, and the inside of the positioning ring 503 is installed with a pull rod 508.
[0023] exist Figure 1 and Figure 2 In the figure, a positioning cone 6 is fixedly installed at the bottom of the ground rod 3, and an insert block is fixedly installed on the outside of the positioning cone 6. The fixing seat 501 is sleeved on the outside of the metal hanging ring 4. By setting the positioning cone 6 in conjunction with the insert block at the bottom, the ground rod 3 can be inserted more stably to prevent the ground rod 3 from tipping over.
[0024] exist Figure 1 and Figure 2 In the figure, by setting up a protective structure 5, the various structures of the protective mechanism 5 cooperate with each other to protect the connection between the grounding wire 2 and the grounding rod 3, so as to prevent the grounding wire 2 from loosening due to pulling and dragging, thereby affecting the detection accuracy. The protective mechanism 5 includes a fixed seat 501, a protective sleeve 502, a positioning ring 503, a clamping plate 504, a limit block 505, an anti-slip plate 506, a reset spring 507 and a pull rod 508. The protective sleeve 502 is threadedly connected to the fixed seat 501, and the side of the grounding wire 2 away from the tester body 1 is interconnected with the metal hanging ring 4. The left and right sides of the protective sleeve 502 are fixedly installed with horizontal plates, and the interiors of the two horizontal plates are provided with fastening bolts 7. By setting the fastening bolts 7, the pull rod 508 can be locked by rotating the fastening bolts 7 to prevent the pull rod 508 from shaking.
[0025] exist Figure 1 and Figure 3 In the figure, the grounding wire 2 passes through the positioning ring 503 and extends to the outside of the protective sleeve 502. There are two clamping plates 504, and the two clamping plates 504 are respectively located on the left and right sides of the grounding wire 2. By setting the clamping plates 504, the clamping plates 504 cooperate with the two anti-slip plates 506 to further fix the grounding wire 2, thereby preventing the grounding wire from loosening.
[0026] exist Figure 2 and Figure 3 In the figure, the opposite sides of the two anti-slide plates 506 are respectively connected to the opposite sides of the two clamping plates 504, and four slide grooves are opened inside the positioning ring 503. The four limit blocks 505 extend from the side away from the two clamping plates 504 to the inside of the four slide grooves respectively.
[0027] exist Figure 2 and Figure 4 There are four return springs 507 in total, and the four return springs 507 are divided into two groups. The number of return springs 507 in each group is two, and the opposite sides of the two groups of return springs 507 are respectively connected to the opposite sides of the two clamping plates 504, and the two pull rods 508 extend to the outside of the protective cover 502 away from the two clamping plates 504.
[0028] To sum up, when using the grounding mechanism of the partial discharge tester, first connect the protective cover 502 with the fixing seat 501, then pull the pull rods 508 on both sides in opposite directions, pass the grounding wire 2 on the side away from the tester body 1 through the positioning ring 503 and connect it to the metal hanging ring 4. When it is fixed stably, loosen the pull rods 508 on both sides. At this time, the two clamping plates 504 will move in relative directions and cooperate with the anti-slip plate 506 to fix the grounding wire 2 stably. At this time, turn the fastening bolts 7 to fix the pull rod 508 stably, and then insert the grounding rod 3 into the ground.
[0029] The electrical components appearing in this article are all connected to the external controller and 220V AC power, and the controller can be a conventional known device that plays a control role such as a computer. The specific model specifications of each device in this article need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.
[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A grounding mechanism for a partial discharge tester, comprising a tester body (1), characterized in that: The outside of the tester body (1) is connected to a grounding wire (2), a grounding rod (3) is arranged on the left side of the tester body (1), a metal hanging ring (4) is fixedly installed on the top of the grounding rod (3), and a protective mechanism (5) is arranged on the top of the grounding rod (3); The protective mechanism (5) comprises a fixed seat (501), a protective sleeve (502), a positioning ring (503), a clamping plate (504), a limiting block (505), an anti-slip plate (506), a reset spring (507) and a pull rod (508); the top of the grounding rod (3) is provided with a fixed seat (501); the top of the fixed seat (501) is provided with a protective sleeve (502); the interior of the protective sleeve (502) is provided with a positioning ring (503); the interior of the positioning ring (503) is provided with a clamping plate (504) movably installed; the top and bottom of the clamping plate (504) are fixedly connected to the limiting block (505); the exterior of the clamping plate (504) is provided with an anti-slip plate (506); the interior of the positioning ring (503) is provided with a reset spring (507); the interior of the positioning ring (503) is provided with a pull rod (508).
2. A grounding mechanism for a partial discharge tester according to claim 1, characterized in that: A positioning cone (6) is fixedly installed at the bottom of the grounding rod (3), an insert block is fixedly installed outside the positioning cone (6), and the fixing seat (501) is sleeved on the outside of the metal hanging ring (4).
3. A grounding mechanism for a partial discharge tester according to claim 1, characterized in that: The protective sleeve (502) is threadedly connected to the fixing seat (501), the side of the grounding wire (2) away from the tester body (1) is interconnected with the metal hanging ring (4), and the left and right sides of the protective sleeve (502) are fixedly installed with cross plates, and fastening bolts (7) are arranged inside the two cross plates.
4. A grounding mechanism for a partial discharge tester according to claim 1, characterized in that: The grounding wire (2) passes through the positioning ring (503) and extends to the outside of the protective sleeve (502). The number of the clamping plates (504) is two, and the two clamping plates (504) are respectively located on the left and right sides of the grounding wire (2).
5. A grounding mechanism for a partial discharge tester according to claim 1, characterized in that: The opposite sides of the two anti-slide plates (506) are respectively connected to the opposite sides of the two clamping plates (504), and four slide grooves are opened inside the positioning ring (503), and the four limit blocks (505) extend from the side away from the two clamping plates (504) to the inside of the four slide grooves respectively.
6. A grounding mechanism for a partial discharge tester according to claim 1, characterized in that: There are four return springs (507) in total, and the four return springs (507) are divided into two groups. The number of return springs (507) in each group is two, and the opposite sides of the two groups of return springs (507) are respectively connected to the opposite sides of the two clamping plates (504), and the sides of the two pull rods (508) away from the two clamping plates (504) extend to the outside of the protective sleeve (502).