Protective device of high-voltage switch cabinet

Abstract

The invention discloses a protection device for a high-voltage switch cabinet, and the device comprises a cabinet body which is provided with two protection frames at one side of a filter screen; the upper protection plate is positioned between the two protection frames and is used for shielding the upper section of the filter screen; the lower protection plate is positioned between the two protection frames and is used for shielding the lower section of the filter screen; a pin shaft is arranged at the top of the lower protection plate, and the two ends of the pin shaft are hinged to the two lug plates; guide rods are hinged to the two sides of the bottom of the lower protection plate correspondingly and used for moving up and down along the sliding grooves; one upper pin shaft is fixedly connected with a first driven gear, and the first driven gear is meshed with a driving gear; wherein the driving gear is used for driving the first driven gear and the upper pin shaft to rotate forwards or reversely, so that the bottom of the upper protection plate is opened outwards or retracted; meanwhile, the top of the lower protection plate is driven to be pushed out or withdrawn. The device solves the problem that a filter screen of an existing high-voltage electric box switch cabinet is exposed and is not protected.

Description

[Technical Field]

[0001] This invention belongs to the field of electrical equipment technology, and specifically relates to a protective device for a high-voltage switchgear. [Background Technology]

[0002] In power systems, high-voltage switchgear is a critical piece of equipment for power transmission and distribution, and the stable operation of its internal components is paramount. Currently, some high-voltage switchgear in existing technologies are equipped with filters to block dust, debris, and other foreign objects, preventing them from entering the cabinet and affecting the performance of electrical components. However, in current designs, these filters are often directly exposed to the outside of the cabinet, lacking an effective protective structure. This exposure makes the filters susceptible to damage from external impacts and scratches during long-term use, leading to problems such as filter breakage and deformation. Once the filter is damaged, foreign objects may penetrate it and enter the switchgear, not only reducing the filtering effect but also potentially causing short circuits, poor contact, and other faults, affecting the safety and reliability of the power system. Furthermore, frequent filter replacement or repair increases maintenance costs and workload, necessitating an improved structure that can effectively protect the filters. [Summary of the Invention]

[0003] The purpose of this invention is to provide a protective device for high-voltage switchgear to solve the problem of exposed and unprotected filters in existing high-voltage switchgear boxes.

[0004] This invention adopts the following technical solution: a protective device for a high-voltage switchgear, comprising:

[0005] A cabinet with two protective frames on the side with the filter screen, each with a sliding groove, the two sliding grooves being arranged facing each other;

[0006] The upper protective plate is a vertically arranged plate structure located between the two protective frames to shield the upper part of the filter screen; the top of the upper protective plate is fixed to each of its two sides with an upper pin shaft, and both upper pin shafts are hinged to the top of the protective frame; the bottom of the upper protective plate is provided with two ear plates facing downward.

[0007] The lower protective plate is a vertically arranged plate structure located between the two protective frames to shield the lower section of the filter screen; a pin is provided at the top of the lower protective plate, and the two ends of the pin are hinged to two ear plates; a guide rod is hinged to each side of the bottom of the lower protective plate, and the guide rod is used to move up and down along the slide.

[0008] One of the upper pins is fixed to a first driven gear, and the first driven gear meshes with a driving gear;

[0009] The driving gear drives the first driven gear and the upper pin to rotate forward or backward, thereby driving the upper protective plate to rotate forward or backward with the upper pin as the center, so that the bottom of the upper protective plate opens outward or retracts; at the same time, the opening or retraction of the upper protective plate is used for the bottom of the lower protective plate to move up and down along the slide groove through two guide rods, and to drive the top of the lower protective plate to push outward or retract.

[0010] Furthermore, the driving gear is connected to a motor, the first driven gear is connected to the second driven gear via a connecting rod, and the second driven gear is fixed to another upper pin.

[0011] Furthermore, cleaning brushes are provided on the bottom and inner side of the lower protective plate, and the width of the cleaning brush on the inner side of the lower protective plate does not exceed 1 / 3 of the width of the lower protective plate.

[0012] Furthermore, a base plate is detachably connected to the bottom of the protective frame, located on the outside of the lower protective plate.

[0013] The beneficial effects of this invention are:

[0014] Firstly, this invention, through the structural design of a protective frame, upper protective plate, and lower protective plate, combined with the transmission of a motor and gears, achieves intelligent switching between filter protection and working states. When the filter needs to perform dehumidification and heat dissipation, the motor drives the gears to fold the protective plate, exposing the filter and ensuring air circulation and normal operation of the equipment's heat dissipation and dehumidification functions. When the filter does not need to work, the motor reverses to drive the protective plate to unfold, appropriately covering the filter and preventing damage from external impacts or scratches from foreign objects, greatly extending the filter's service life.

[0015] Meanwhile, as the protective plate opens, the lower protective plate moves upward, simultaneously driving the cleaning brush to clean the filter screen surface. This exposes the filter screen while cleaning away dust and debris, preventing the filter screen from being affected by long-term dust accumulation and thus reducing the frequency and difficulty of manual cleaning, thereby improving the device's self-maintenance capabilities. [Attached Image Description]

[0016] Figure 1 This is a schematic diagram of the structure of the upper and lower protective plates of the present invention in the closed state;

[0017] Figure 2 for Figure 1 The side view of the base plate is not included.

[0018] Figure 3 This is a schematic diagram of the structure of the protective frame of the present invention;

[0019] Figure 4 This is a schematic diagram of the upper and lower protective plates of the present invention;

[0020] Figure 5This is a schematic diagram of the structure of the upper and lower protective plates of the present invention in the open state.

[0021] Among them, 1. cabinet, 2. protective frame, 3. upper protective plate, 4. lower protective plate, 5. base plate, 6. motor, 7. second driving gear, 8. first driven gear, 10. slide groove, 11. cleaning brush, 12. guide rod, 13. ear plate, 14. pin, 15. upper pin, 16. second driven gear.

Detailed Implementation Methods

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] This invention discloses a protective device for high-voltage switchgear, such as... Figure 1 As shown, it includes cabinet 1, upper protective panel 3, and lower protective panel 4, with the following specific structure:

[0024] A cabinet 1 of a high-voltage switchgear has a filter screen on one side and two protective frames 2 on the side with the filter screen. Each of the protective frames 2 is provided with a sliding groove 10, and the two sliding grooves 10 are arranged facing each other.

[0025] The upper protective plate 3 is a vertically arranged plate structure located between the two protective frames 2 to cover the upper part of the filter screen; the top of the upper protective plate 3 is fixedly connected to each of its two sides with an upper pin 15, and both upper pins 15 are hinged to the top of the protective frame 2; the bottom of the upper protective plate 3 is provided with two ear plates 13 facing downward.

[0026] The lower protective plate 4 is a vertically arranged plate structure located between the two protective frames 2 to shield the lower section of the filter screen; the top of the lower protective plate 4 is provided with a pin 14, the two ends of which are hinged to the two ear plates 13; a guide rod 12 is hinged to each side of the bottom of the lower protective plate 4, and the guide rod 12 is used to move up and down along the slide groove 10;

[0027] One of the upper pins 15 is fixed to a first driven gear 8, which meshes with a driving gear 7.

[0028] In practical use, there are various ways to prevent the guide rod 12 from falling out of the slide groove 10. For example, the inner wall of the slide groove 10 can be provided with an embedded groove, and the end of the guide rod 12 is provided with a protruding ring, which is located in the embedded groove.

[0029] The driving gear 7 drives the first driven gear 8 and the upper pin 15 to rotate forward or backward, thereby driving the upper protective plate 3 to rotate forward or backward with the upper pin 15 as the center, so that the bottom of the upper protective plate 3 opens outward or retracts; at the same time, the opening or retraction of the upper protective plate 3 is used for the bottom of the lower protective plate 4 to move up and down along the slide groove 10 through two guide rods 12, and drive the top of the lower protective plate 4 to push outward or retract.

[0030] When the high-voltage switchgear needs to protect the filter, the upper protective plate 3 and the lower protective plate 4 are lowered. When the filter needs to be used, the drive gear 7 drives a series of components to open and lift the upper protective plate 3 and the lower protective plate 4. Of course, this protective device cannot completely seal the filter; it is an improvement over the original fully exposed filter state, which greatly extends the service life of the filter.

[0031] In some embodiments, the driving gear 7 is connected to a motor 6, and the first driven gear 8 is connected to a second driven gear 16 via a connecting rod. The second driven gear 16 is fixed to another upper pin 15. Using two driven gears to open or close the protective plate makes the overall operation smoother.

[0032] In some embodiments, cleaning brushes 11 are provided on the bottom and inner side of the lower protective plate 4, and the width of the cleaning brushes 11 on the inner side of the lower protective plate 4 does not exceed 1 / 3 of the width of the lower protective plate 4. By providing cleaning brushes 11 during the opening of the upper protective plate 3 and the lower protective plate 4, the filter screen can be cleaned simultaneously during the opening process, achieving two goals at once.

[0033] In some embodiments, a base plate 5 is detachably connected to the bottom of the two protective frames 2, located outside the lower protective plate 4. The base plate 5 can protect the cleaning brush 11.

[0034] The method of using the protective device for a high-voltage switchgear according to the present invention is as follows:

[0035] When the filter needs protection, the motor is started to reverse, and the motor drives the drive gear 7 to rotate counterclockwise. The drive gear 7 drives the first driven gear 8, which in turn drives the upper pin 15 fixed to it to rotate counterclockwise in sync. This causes the upper protective plate 3 to rotate downward and retract around the upper pin 15. At the same time, the ear plate 13 at the bottom of the upper protective plate 3 pulls the pin 14 at the top of the lower protective plate 4, causing the guide rod 12 at the bottom of the lower protective plate 4 to slide downward along the slide groove 10 on the protective frame 2. The lower protective plate 4 moves downward accordingly, and finally the upper protective plate 3 and the lower protective plate 4 are completely closed, tightly covering the filter and preventing it from being damaged by external forces.

[0036] When the high-voltage switchgear needs to use a filter for dehumidification and heat dissipation, the motor is started to rotate clockwise. The motor drives the drive gear 7 to rotate clockwise, and the first driven gear 8 rotates clockwise under the drive of the drive gear 7. The upper protective plate 3 rotates upward and opens axially with the upper pin 15 as the pivot. During the rotation, the upper protective plate 3 drives the lower protective plate 4 to move synchronously. The guide rod 12 at the bottom of the lower protective plate 4 slides upward along the slide groove 10, causing the lower protective plate 4 to rise and unfold. During this process, the cleaning brushes 11 on the bottom and inner side of the lower protective plate 4 will contact the filter surface, cleaning the filter while the protective plate opens, removing surface dust and debris.

[0037] In addition, the design of two driven gears ensures smooth operation of the upper and lower protective plates. After cleaning, if no filter is needed, restarting the motor in reverse will allow the protective plates to close again, while the base plate 5 protects the cleaning brush 11 at the bottom of the lower protective plate 4.

Claims

1. A protective device for a high-voltage switchgear, characterized in that, include: A cabinet (1) has two protective frames (2) on one side of which a filter screen is provided. Each of the protective frames (2) is provided with a sliding groove (10), and the two sliding grooves (10) are arranged facing each other. The upper protective plate (3) is a vertically arranged plate structure located between the two protective frames (2) to cover the upper part of the filter screen; the top of the upper protective plate (3) is fixedly connected to each of its two sides with an upper pin (15), and the two upper pins (15) are hinged to the top of the protective frame (2); the bottom of the upper protective plate (3) is provided with two ear plates (13) facing downward. The lower protective plate (4) is a vertically arranged plate structure located between the two protective frames (2) to cover the lower section of the filter screen; a pin (14) is provided at the top of the lower protective plate (4), and the two ends of the pin (14) are hinged to the two ear plates (13); a guide rod (12) is hinged to each side of the bottom of the lower protective plate (4), and the guide rod (12) is used to move up and down along the slide groove (10); One of the upper pins (15) is fixed to a first driven gear (8), which meshes with a driving gear (7); The driving gear (7) drives the first driven gear (8) and the upper pin (15) to rotate forward or backward, thereby driving the upper protective plate (3) to rotate forward or backward with the upper pin (15) as the center, so that the bottom of the upper protective plate (3) opens outward or retracts; at the same time, the opening or retraction of the upper protective plate (3) is used for the bottom of the lower protective plate (4) to move up and down along the slide groove (10) through two guide rods (12), and drive the top of the lower protective plate (4) to push outward or retract.

2. The protective device for a high-voltage switchgear as described in claim 1, characterized in that, The driving gear (7) is connected to a motor (6), the first driven gear (8) is connected to the second driven gear (16) through a connecting rod, and the second driven gear (16) is fixed to another upper pin (15).

3. A protective device for a high-voltage switchgear as described in claim 1 or 2, characterized in that, Cleaning brushes (11) are provided on the bottom and inner side of the lower protective plate (4), and the width of the cleaning brushes (11) on the inner side of the lower protective plate (4) does not exceed 1 / 3 of the width of the lower protective plate (4).

4. The protective device for a high-voltage switchgear as described in claim 3, characterized in that, A base plate (5) is detachably connected to the bottom of the two protective frames (2) and located on the outside of the lower protective plate (4).

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