Discharge device and discharge method for a capacitor

Abstract

The application discloses a capacitor discharging device and a discharging method, and relates to the technical field of capacitor discharging. The capacitor discharging device is used for discharging operation of a capacitor, the capacitor comprises two terminals, the discharging device comprises a discharging arm, a clamping structure, an insulating rod and a grounding assembly, the discharging arm is configured to abut against the two terminals; the clamping structure comprises a support and two clamping pieces, the support is fixedly arranged on the discharging arm, and the two clamping pieces are slidingly arranged on opposite sides of the support; the insulating rod is arranged in the discharging arm, the insulating rod is in sliding cooperation with the discharging arm, the insulating rod is provided with a driving block, and when the driving block moves away from the discharging arm, the distance between the two clamping pieces gradually increases; the grounding assembly comprises a grounding wire, one end of the grounding wire is connected with the discharging arm, and the other end of the grounding wire is used for grounding. The capacitor discharging device can guarantee the reliability of contact between the terminals and the discharging arm, ensure the personal safety of maintenance personnel, and achieve the effect of saving time and effort.

Description

Technical Field

[0001] This invention relates to the field of capacitor discharge technology, and in particular to a capacitor discharge device and discharge method. Background Technology

[0002] Substation capacitors are energy storage devices, and even after a power outage, they still retain a significant amount of residual charge. Therefore, before performing maintenance on capacitors, each capacitor should be discharged individually to remove all remaining charge and prevent electric shock accidents to maintenance personnel when they come into contact with them.

[0003] Existing discharge devices typically involve grounding one end of a grounding wire first, and then having an operator hold an insulated rod to bring the discharge conductor to the capacitor terminals. This results in significant physical exertion and workload for the operator, and makes it difficult to ensure proper contact between the discharge conductor and the terminals, leading to incomplete capacitor discharge and potential safety accidents. Summary of the Invention

[0004] The purpose of this invention is to provide a capacitor discharge device and discharge method that can ensure the reliability of the contact between the terminals and the discharge arm, ensure the personal safety of maintenance personnel, and achieve the effect of saving time and effort.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A discharge device for a capacitor, used to discharge the capacitor, the capacitor including two terminals spaced apart, the discharge device comprising:

[0007] A discharge arm, the discharge arm being configured to abut against the two terminals;

[0008] The snap-fit ​​structure includes a bracket and two snap-fit ​​components. The bracket is fixedly mounted on the discharge arm, and the two snap-fit ​​components are slidably mounted on opposite sides of the bracket.

[0009] An insulating rod is inserted through the discharge arm and is slidably engaged with the discharge arm. The insulating rod is provided with a driving block. When the driving block moves away from the discharge arm, the distance between the two snap-fit ​​pieces gradually increases. Each snap-fit ​​piece is configured to snap-fit ​​one of the terminals.

[0010] A grounding assembly includes a grounding wire, one end of which is connected to the discharge arm, and the other end of which is used for grounding.

[0011] As an optional solution for the discharge device of the above-mentioned capacitor, the end of the snap-fit ​​member near the insulating rod is provided with a driving slope, and the driving block slides against the driving slope.

[0012] As an optional solution for the discharge device of the aforementioned capacitor, the snap-fit ​​component includes a drive slider, a connecting rod, and a snap-fit ​​block connected in sequence. The drive inclined surface is disposed on the drive slider, and the connecting rod passes through the bracket and slides in cooperation with the bracket.

[0013] As an optional solution for the discharge device of the aforementioned capacitor, the snap-fit ​​block has a snap-fit ​​groove, which can snap-fit ​​with the terminal.

[0014] As an optional solution for the discharge device of the aforementioned capacitor, the snap-fit ​​structure further includes a first elastic element, with each snap-fit ​​element corresponding to one of the first elastic elements, so as to reduce the distance between two snap-fit ​​elements.

[0015] As an alternative to the discharge device of the aforementioned capacitor, the discharge device further includes a second elastic member, the two ends of which abut against the bracket and the insulating rod respectively, so that the driving block approaches and abuts against the discharge arm.

[0016] As an optional solution for the discharge device of the above-mentioned capacitor, the discharge arm is provided with multiple grooves on both sides of the snap-fit ​​structure, and the terminal can be snapped into the groove on the corresponding side.

[0017] As an optional solution for the discharge device of the above-mentioned capacitor, the insulating rod includes a straight rod, a rotating rod and a connecting ball, the connecting ball and the rotating rod are fixedly connected, the top of the straight rod is provided with a ball groove, and the connecting ball is rotatably disposed in the ball groove.

[0018] As an alternative to the discharge device for the aforementioned capacitor, the straight rod includes a gripping rod and a telescopic rod, the gripping rod and the telescopic rod being slidably engaged, and the ball groove being formed at the end of the telescopic rod away from the gripping rod.

[0019] A method for discharging a capacitor, performed by a discharge device for the capacitor, the discharge method comprising:

[0020] S1: Ground the grounding wire;

[0021] S2: Move the snap-fit ​​structure between the two terminals of the capacitor and simultaneously bring the discharge arm into contact with both terminals;

[0022] S3: Continue to push the insulating rod to gradually increase the distance between the two latching parts until both latching parts abut against the corresponding terminals.

[0023] The beneficial effects of this invention are:

[0024] This invention provides a capacitor discharge device. In this discharge device, the operator holds an insulating rod and moves the locking structure between the two terminals of the capacitor to be discharged. When the discharge arm simultaneously abuts against the two terminals, the operator continues to move the insulating rod. At this time, the insulating rod slides relative to the support, and the driving block of the insulating rod drives the two locking parts to move away from each other. When both locking parts abut against the corresponding terminals, the reliability of the contact between the terminals and the discharge arm can be ensured, allowing the capacitor to discharge through the discharge arm and the grounding wire, ensuring the personal safety of maintenance personnel, and achieving the effect of saving time and effort. Attached Figure Description

[0025] Figure 1 This is a first structural schematic diagram of the capacitor discharge device provided by the present invention;

[0026] Figure 2 This is a second structural schematic diagram of the capacitor discharge device provided by the present invention;

[0027] Figure 3 This is a schematic diagram of the discharge arm and snap-fit ​​structure provided by the present invention.

[0028] In the picture:

[0029] 1. Discharge arm; 11. First discharge arm; 111. First groove; 12. Second discharge arm; 121. Second groove; 13. Sleeve;

[0030] 2. Snap-fit ​​structure; 21. Bracket; 22. Snap-fit ​​component; 221. Drive slider; 2211. Drive inclined surface; 222. Connecting rod; 223. Snap-fit ​​block; 2231. Snap-fit ​​groove; 224. First elastic element;

[0031] 3. Insulating rod; 31. Drive block; 32. Straight rod; 321. Grip rod; 322. Telescopic rod; 33. Rotating rod; 34. Connecting ball; 35. First locking bolt; 36. Second locking bolt; 37. Hand grip ring; 38. Anti-slip texture;

[0032] 4. Grounding assembly; 41. Grounding wire; 42. First terminal lug; 43. Second terminal lug;

[0033] 5. Second elastic element. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0036] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0037] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] This embodiment provides a capacitor discharge device for discharging a capacitor, the capacitor including two terminals spaced apart. Figures 1-3As shown, the discharge device includes a discharge arm 1, a snap-fit ​​structure 2, an insulating rod 3, and a grounding assembly 4. The discharge arm 1 is configured to abut against two terminals. The snap-fit ​​structure 2 includes a bracket 21 and two snap-fit ​​pieces 22. The bracket 21 is fixedly mounted on the discharge arm 1, and the two snap-fit ​​pieces 22 are slidably mounted on opposite sides of the bracket 21. The insulating rod 3 passes through the discharge arm 1 and slides with the discharge arm 1. The insulating rod 3 is provided with a driving block 31. When the driving block 31 moves away from the discharge arm 1, the distance between the two snap-fit ​​pieces 22 gradually increases. Each snap-fit ​​piece 22 is configured to snap onto one terminal. The grounding assembly 4 includes a grounding wire 41. One end of the grounding wire 41 is connected to the discharge arm 1, and the other end of the grounding wire 41 is used for grounding.

[0041] In this discharge device, the operator holds the insulating rod 3 and moves the snap-fit ​​structure 2 between the two terminals of the capacitor to be discharged. When the discharge arm 1 simultaneously abuts against the two terminals, the operator continues to move the insulating rod 3. At this time, the insulating rod 3 and the bracket 21 slide relative to each other. The driving block 31 of the insulating rod 3 drives the two snap-fit ​​pieces 22 to move away from each other. When both snap-fit ​​pieces 22 abut against the corresponding terminals, the reliability of the contact between the terminals and the discharge arm 1 can be guaranteed, so that the capacitor can be discharged through the discharge arm 1 and the grounding wire 41, ensuring the personal safety of maintenance personnel and achieving the effect of saving time and effort.

[0042] In this embodiment, the discharge arm 1 includes a first discharge arm 11, a second discharge arm 12, and a sleeve 13 connecting the first discharge arm 11 and the second discharge arm 12. An insulating rod 3 passes through the sleeve 13. The first discharge arm 11 and the second discharge arm 12 are symmetrically arranged about the sleeve 13. During discharge, the first discharge arm 11 abuts against one terminal of the capacitor, and the second discharge arm 12 abuts against the other terminal of the capacitor, ensuring the balance and stability of the discharge device and saving the operator's physical effort.

[0043] In this embodiment, the discharge arm 1 has multiple grooves on both sides of the snap-fit ​​structure 2, and the terminal can be snapped into the corresponding groove. That is, the first discharge arm 11 has multiple first grooves 111, and the second discharge arm 12 has multiple second grooves 121. Through the snap-fit ​​between the first grooves 111, the second grooves 121 and the corresponding terminals, relative sliding between the discharge arm 1 and the terminals can be avoided, which can prevent discharge arcing and improve the stability during discharge.

[0044] like Figure 3As shown, to simplify the structure, a driving ramp 2211 is provided at the end of the snap-fit ​​component 22 near the insulating rod 3, and the driving block 31 slides against the driving ramp 2211. When the discharge arm 1 abuts against the terminal, the insulating rod 3 will move relative to the bracket 21. At this time, the sliding contact between the driving block 31 and the driving ramp 2211 can drive the snap-fit ​​component 22 to move in the horizontal direction, that is, increase the distance between the two snap-fit ​​components 22. This structure makes it possible for the operator to apply the same force direction when abutting the discharge arm 1 against the terminal and when abutting the snap-fit ​​component 22 against the terminal, simplifying the operation and achieving the effect of saving time and effort.

[0045] To ensure that the locking member 22 moves radially along the insulating rod 3 when the insulating rod 3 moves, the locking member 22 includes a drive slider 221, a connecting rod 222 and a locking block 223 connected in sequence. The drive inclined surface 2211 is disposed on the drive slider 221, and the connecting rod 222 passes through the bracket 21 and slides in cooperation with the bracket 21.

[0046] The drive slider 221 is used to abut against the drive block 31 of the insulating rod 3, and the connecting rod 222 can ensure that the drive slider 221 can only move radially along the insulating rod 3 through the sliding engagement with the bracket 21. The snap-fit ​​block 223 is used to abut against and fix the terminal.

[0047] Furthermore, the snap-fit ​​block 223 has a snap-fit ​​groove 2231. When the insulating rod 3 drives the snap-fit ​​hole to abut the terminal, the terminal enters the snap-fit ​​groove 2231 and engages with the terminal. The snap-fit ​​groove 2231 enables the discharge device and the capacitor to maintain relative stability in the axial direction of the insulating rod 3, further improving the reliability of the connection between the discharge device and the capacitor.

[0048] like Figure 3 As shown, the snap-fit ​​structure 2 also includes a first elastic element 224. Each snap-fit ​​member 22 corresponds to one first elastic element 224 to reduce the distance between the two snap-fit ​​members 22. The first elastic element 224 is used to reset the snap-fit ​​member 22. When the operator reduces the contact force between the discharge arm 1 and the terminal, the driving force of the drive block 31 on the drive ramp 2211 decreases, and the snap-fit ​​member 22 moves inward under the drive of the first elastic element 224, reducing the distance between the two snap-fit ​​members 22. At this time, the operator can remove the discharge device.

[0049] In this embodiment, the discharge device further includes a second elastic element 5. The two ends of the second elastic element 5 abut against the bracket 21 and the insulating rod 3, respectively, so that the driving block 31 approaches and abuts against the discharge arm 1. The second elastic element 5 enables the insulating rod 3 to return to its original position. In this state, the two locking pieces 22 are also in their initial positions, facilitating multiple discharges directly by the discharge device without requiring frequent operation by the operator. It is worth noting that the insulating rod 3 and the discharge arm 1 are limited by the driving block 31 to prevent the second elastic element 5 from causing the insulating rod 3 and the discharge arm 1 to detach.

[0050] It is worth noting that the extension direction of the terminals of the capacitor to be discharged is not necessarily horizontal; it may be inclined or vertical. For example... Figure 1 and Figure 2 As shown, in order to make the discharge device applicable to the discharge operation of all capacitors, the insulating rod 3 includes a straight rod 32, a rotating rod 33 and a connecting ball 34. The connecting ball 34 and the rotating rod 33 are fixedly connected. The top of the straight rod 32 is provided with a ball groove, and the connecting ball 34 is rotatably disposed in the ball groove.

[0051] By rotating the connecting ball 34, the angle between the rotating rod 33 and the straight rod 32 can be adjusted according to the extension direction of the capacitor terminals, making it easy for the operator to move the snap-fit ​​structure 2 between the two terminals along a direction perpendicular to the terminals, greatly improving the convenience of the operator using the discharge device.

[0052] In this embodiment, the straight rod 32 includes a gripping rod 321 and a telescopic rod 322. The gripping rod 321 and the telescopic rod 322 are slidably engaged, and a ball groove is formed at the end of the telescopic rod 322 away from the gripping rod 321. The operator can adjust the total length of the straight rod 32 by sliding the gripping rod 321 and the telescopic rod 322 relative to each other, thereby facilitating the operator to discharge capacitors at different heights.

[0053] Furthermore, the inner diameter of the gripping rod 321 is larger than the outer diameter of the telescopic rod 322 and the outer diameter of the rotating rod 33. This structure allows both the telescopic rod 322 and the rotating rod 33 to be inserted into the gripping rod 321 when stored, thereby reducing the space occupied by the discharge device and facilitating storage.

[0054] In this embodiment, the side wall of the gripping rod 321 is provided with a first threaded hole. The relative position between the telescopic rod 322 and the gripping rod 321 can be fixed by the first locking bolt 35, preventing the telescopic rod 322 from sliding up and down during the discharge of the capacitor. Similarly, the side wall of the telescopic rod 322 is provided with a second threaded hole, which passes through the inner surface of the ball groove. The relative position between the telescopic rod 322 and the rotating rod 33 can be fixed by the second locking bolt 36, preventing the rotating rod 33 from rotating during the discharge of the capacitor.

[0055] The first locking bolt 35 and the second locking bolt 36 can be wing bolts, which makes it easy for operators to tighten or loosen the locking bolts and saves effort.

[0056] To prevent accidents caused by the operator's hands slipping on the surface of the grip lever 321, two grip rings 37 are spaced apart below the grip lever 321, and multiple longitudinally distributed anti-slip grooves 38 are provided on the handle portion corresponding to the grip rings 37 to increase the friction between the operator's palm and the grip lever 321, thereby enhancing the anti-slip effect. To increase hand comfort, the anti-slip grooves 38 are made of soft insulating rubber.

[0057] In this embodiment, the grounding component 4 further includes a first terminal lug 42 and a second terminal lug 43. The first terminal lug 42 is used to crimp the end of the grounding wire 41 connected to the discharge arm 1, and the second terminal lug 43 is used to crimp the end of the grounding wire 41 connected to the ground. The first terminal lug 42 is set on the first discharge arm 11 or the second discharge arm 12 by screws, and the second terminal lug 43 is connected to the grounding wire 41 of the ground to discharge the charge of the capacitor to the ground.

[0058] Example 2

[0059] This embodiment provides a method for discharging a capacitor, executed by the aforementioned capacitor discharge device, the method comprising:

[0060] S1: Ground grounding wire 41;

[0061] S2: Move the snap-fit ​​structure 2 between the two terminals of the capacitor and make the discharge arm 1 simultaneously abut against the two terminals;

[0062] S3: Continue to push the insulating rod 3 to gradually increase the distance between the two locking pieces 22 until both locking pieces 22 abut against the corresponding terminals.

[0063] When both clips 22 are in contact with the corresponding terminals, the reliability of the contact between the terminals and the discharge arm 1 can be guaranteed, allowing the capacitor to discharge through the discharge arm 1 and the grounding wire 41, ensuring the personal safety of maintenance personnel and achieving the effect of saving time and effort.

[0064] In this embodiment, the discharge method further includes:

[0065] S4: Pull the insulating rod 3 away from the capacitor to disengage the discharge arm 1 and the snap-fit ​​22 from the terminal;

[0066] S5: Repeat steps S2 to S4.

[0067] By making the insulating rod 3 reciprocate in a small amplitude, the capacitor can be discharged multiple times quickly, improving the discharge effect and discharge efficiency.

[0068] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A discharging device of a capacitor for performing a discharging operation on a capacitor, the capacitor including two terminals disposed at intervals, characterized by, The discharge device includes: Discharge arm (1), the discharge arm (1) being configured to abut against the two terminals; The snap-fit ​​structure (2) includes a bracket (21) and two snap-fit ​​pieces (22). The bracket (21) is fixedly mounted on the discharge arm (1), and the two snap-fit ​​pieces (22) are slidably mounted on opposite sides of the bracket (21). An insulating rod (3) is inserted through the discharge arm (1) and is slidably engaged with the discharge arm (1). The insulating rod (3) is provided with a driving block (31). When the driving block (31) moves away from the discharge arm (1), the distance between the two snap-fit ​​pieces (22) gradually increases. Each snap-fit ​​piece (22) is configured to snap-fit ​​one terminal. The grounding assembly (4) includes a grounding wire (41), one end of which is connected to the discharge arm (1), and the other end of which is used for grounding; The insulating rod (3) includes a straight rod (32), a rotating rod (33) and a connecting ball (34). The connecting ball (34) and the rotating rod (33) are fixedly connected. The top of the straight rod (32) is provided with a ball groove, and the connecting ball (34) is rotatably disposed in the ball groove.

2. The capacitor discharge device according to claim 1, wherein The snap-fit ​​member (22) has a driving ramp (2211) at one end near the insulating rod (3), and the driving block (31) slides against the driving ramp (2211).

3. The capacitor discharge device of claim 2, wherein The snap-fit ​​component (22) includes a drive slider (221), a connecting rod (222), and a snap-fit ​​block (223) connected in sequence. The drive inclined surface (2211) is disposed on the drive slider (221), and the connecting rod (222) passes through the bracket (21) and slides with the bracket (21).

4. The capacitor discharge device of claim 3, wherein The snap-fit ​​block (223) has a snap-fit ​​groove (2231) which can snap-fit ​​with the terminal.

5. The capacitor discharge device of claim 1, wherein The snap-fit ​​structure (2) further includes a first elastic element (224), and each snap-fit ​​element (22) corresponds to one first elastic element (224) so ​​as to reduce the distance between two snap-fit ​​elements (22).

6. The capacitor discharge device of claim 1, wherein The discharge device further includes a second elastic element (5), the two ends of which abut against the bracket (21) and the insulating rod (3) respectively, so that the drive block (31) approaches and abuts against the discharge arm (1).

7. The capacitor discharge device of claim 1, wherein The discharge arm (1) has multiple grooves on both sides of the snap-fit ​​structure (2), and the terminal can be snapped into the groove on the corresponding side.

8. The capacitor discharge device of claim 1, wherein The straight rod (32) includes a grip rod (321) and a telescopic rod (322), the grip rod (321) and the telescopic rod (322) are slidably engaged, and the ball groove is opened at the end of the telescopic rod (322) away from the grip rod (321).

9. A method of discharging a capacitor, characterized by, The discharge method is performed by the discharge device of the capacitor according to any one of claims 1 to 8, and the discharge method includes: S1: Ground the grounding wire (41); S2: Move the snap-fit ​​structure (2) between the two terminals of the capacitor and make the discharge arm (1) simultaneously abut against the two terminals; S3: Continue to push the insulating rod (3) to gradually increase the distance between the two latching members (22) until both latching members (22) abut against the corresponding terminals.

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