Multi-channel overvoltage protection device

Abstract

The utility model discloses a multichannel overvoltage protection device, which relates to the electrical field, and comprises a device body, a transverse frame and movable plates, the top of the device body is provided with the transverse frame, the movable plates are slidably connected in the transverse frame at equal intervals, the tops of the movable plates are fixedly connected with a sheath, the inner ring is slidably connected in the sheath, and the inner ring is arranged in a wide-end-up manner. According to the utility model, through the sheath and the inner ring structure on the movable plate, the high-efficiency overvoltage protection on the cable joint and the interaction between the descending of the inner ring and the extrusion strips are realized, the cable can be tightly clamped, the overvoltage can be effectively isolated and dispersed, and the damage to the cable caused by the overvoltage can be prevented. Therefore, the service life of the cable is prolonged, and the stability of a power system is improved.

Description

Technical Field

[0001] The utility model relates to the electrical field, in particular to a multi-channel overvoltage protection device. Background Art

[0002] As one of the key devices in the power system, the performance and reliability of the overvoltage protector are directly related to the safe and stable operation of the power system. However, existing overvoltage protectors often lack sufficient protective coverings and are easily affected by the external environment, resulting in performance degradation or even damage.

[0003] Most of the existing overvoltage protectors are directly exposed to the external environment and lack a special protective cover, which makes the protectors vulnerable to erosion by natural factors such as wind, rain, snow, dust, and external factors such as animals and human damage. In the long run, it will not only affect the electrical performance of the protector, but may also shorten its service life. Utility Model Content

[0004] The utility model aims to provide a multi-channel overvoltage protection device, and solves the following technical problems: how to enhance the protection performance of the overvoltage protector and extend the service life of the overvoltage protector.

[0005] In order to solve the problems existing in the prior art, the technical solution adopted by the utility model is as follows:

[0006] A multi-channel overvoltage protection device comprises a device body, a transverse frame and a movable plate, wherein a transverse frame is arranged on the top of the device body, a movable plate is equidistantly slidably connected inside the transverse frame, a sheath is fixedly connected to the top of the movable plate, an inner ring is slidably connected inside the sheath, the inner ring is wide at the top and narrow at the bottom, extrusion strips are equidistantly arranged inside the sheath, the extrusion strips are inclined, the bottom ends of the extrusion strips are elastically bent and fixedly connected to the inner wall of the inner ring, and the top ends of the extrusion strips pass through the inner ring and extend outward.

[0007] Preferably, sliding holes are symmetrically opened on the outer side of the sheath, and sliding blocks are symmetrically fixedly connected to the outer side of the inner ring, and the sliding blocks slide inside the corresponding sliding holes.

[0008] Preferably, the outer side of the sheath is slidably connected to an outer ring, one end of the slider is fixedly connected to the inner wall of the outer ring, the outer side of the outer ring is fixedly connected to a fixed block, the fixed block is internally threadedly connected to a threaded rod, and the bottom end of the threaded rod is rotatably connected to the movable plate.

[0009] Preferably, a knob is fixedly connected to the top of the threaded rod, and turning the knob drives the threaded rod to rotate, making it more intuitive and convenient to adjust the lifting and lowering of the lever.

[0010] Preferably, the top of the extrusion strip is spherical, and the spherical top will not cause excessive pressure on the cable, thereby avoiding damage to the cable when clamping the cable.

[0011] Preferably, the inner wall of the transverse frame is symmetrically provided with sliding grooves, and sliding bars are fixedly connected to both sides of the movable plate, and the sliding bars are slidably connected to the inside of the corresponding sliding grooves.

[0012] Preferably, a truncated cone-shaped circular hole is provided inside the movable plate, and a positioning sleeve is fixedly connected to the movable plate. The design of the truncated cone-shaped circular hole enables the movable plate to flexibly adapt to insulating jackets or cable sheaths of different diameters, and the design of the positioning sleeve helps to achieve precise positioning of the movable plate in the horizontal frame.

[0013] Compared with the related art, the utility model has the following beneficial effects:

[0014] The utility model realizes efficient overvoltage protection for the cable connection through the sheath and inner ring structure on the movable plate. The interaction between the descent of the inner ring and the extrusion strip can tightly clamp the cable, effectively isolate and disperse the overvoltage, and prevent it from damaging the cable, thereby extending the service life of the cable and improving the stability of the power system.

[0015] The design of the truncated cone-shaped circular hole enables the movable plate to adapt to insulating jackets or cable sheaths of different diameters, while the combination of the slide groove and the slide bar allows the movable plate to flexibly adjust its position within the horizontal frame to adapt to the layout of insulating jackets with different spacings. This high degree of adaptability and flexibility enables the device to be widely used in various power systems to meet the protection needs in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the device of the utility model;

[0018] Figure 3 This is a cross-sectional view of the sheath structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the sheath structure of the utility model.

[0020] Figure numerals: 1, body; 2, horizontal frame; 3, movable plate; 4, sheath; 41, sliding hole; 5, inner ring; 51, slider; 6, extrusion strip; 7, outer ring; 8, fixing block; 9, threaded rod; 10, knob; 11, positioning sleeve; 21, slide groove; 31, slide bar; 32, round hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] The multi-channel overvoltage protection device comprises a body 1, a horizontal frame 2 and a movable plate 3;

[0023] like Figures 1 to 4 As shown, a transverse frame 2 is arranged on the top of the body 1, a movable plate 3 is equidistantly slidably connected inside the transverse frame 2, a sheath 4 is fixedly connected to the top of the movable plate 3, an inner ring 5 is slidably connected inside the sheath 4, the inner ring 5 is wide at the top and narrow at the bottom, extrusion strips 6 are equidistantly arranged inside the sheath 4, the extrusion strips 6 are inclined, the bottom ends of the extrusion strips 6 are elastically bent and fixedly connected to the inner wall of the inner ring 5, and the top ends of the extrusion strips 6 pass through the inner ring 5 and extend outward;

[0024] According to the specific layout of the insulating jacket on the lower chassis of the device body 1 and the corresponding cable connection, the position of the movable plate 3 in the horizontal frame 2 is slidably adjusted, and each movable plate 3 is put on the outside of the top end of the insulating jacket, and the sheath 4 is put on the connection between the insulating jacket and the cable to ensure that the cable passes through the inner ring 5. As the inner ring 5 descends, its inner wall gradually contacts the inclined part of the extrusion strip 6 and applies pressure, guiding the extrusion strip 6 to bend inward and approach each other, thereby achieving tight clamping of the cable.

[0025] like Figures 1 to 4 As shown, sliding holes 41 are symmetrically opened on the outer side of the sleeve 4, and sliders 51 are symmetrically fixedly connected to the outer side of the inner ring 5. The sliders 51 slide inside the corresponding sliding holes 41. The sliding holes 41 provide a precise sliding track for the sliders 51, so that the inner ring 5 can move steadily and smoothly along a predetermined direction inside the sleeve 4.

[0026] like Figures 1 to 4 As shown, the outer side of the sheath 4 is slidably connected to the outer ring 7, one end of the slider 51 is fixedly connected to the inner wall of the outer ring 7, the outer side of the outer ring 7 is fixedly connected to a fixing block 8, the inner part of the fixing block 8 is threadedly connected to a threaded rod 9, and the bottom end of the threaded rod 9 is rotatably connected to the movable plate 3;

[0027] By rotating the threaded rod 9, the threaded rod 9 rotates in the internal thread of the fixed block 8 and guides the fixed block 8 to move downward, so that the outer ring 7 will descend with the rotation of the threaded rod 9. When the outer ring 7 descends, the inner ring 5 is driven to descend synchronously through the fixed connection between its inner wall and the slider 51.

[0028] like Figures 1 to 4 As shown, a knob 10 is fixedly connected to the top of the threaded rod 9 . The existence of the knob 10 makes the operation of the threaded rod 9 intuitive and simple.

[0029] like Figures 1 to 4 As shown, the top of the extrusion strip 6 is spherical. When the cable passes through the inner ring 5, the spherical top of the extrusion strip 6 will not cause excessive pressure on the cable, but retains sufficient elastic space to cope with subsequent operations.

[0030] like Figures 1 to 4As shown, the inner wall of the transverse frame 2 is symmetrically provided with sliding grooves 21, and sliding bars 31 are fixedly connected on both sides of the movable plate 3. The sliding bars 31 are slidably connected inside the corresponding sliding grooves 21. The sliding grooves 21 provide a precise and stable sliding path for the sliding bars 31, so that the movable plate 3 can move steadily and smoothly along a predetermined direction inside the transverse frame 2.

[0031] like Figures 1 to 4 As shown, a truncated cone-shaped circular hole 32 is opened inside the movable plate 3, and the movable plate 3 is fixedly connected with a positioning sleeve 11. The design of the truncated cone-shaped circular hole 32 enables the movable plate 3 to flexibly adapt to insulating jackets of different diameters. Since the truncated cone shape has a gradually changing diameter, it can provide stable support and positioning for components of different sizes. The design of the positioning sleeve 11 helps to achieve precise positioning of the movable plate 3 in the horizontal frame 2.

[0032] 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 multi-channel overvoltage protection device, comprising: A device body (1), a transverse frame (2) and a movable plate (3), characterized in that a transverse frame (2) is arranged on the top of the device body (1), the movable plate (3) is equidistantly slidably connected inside the transverse frame (2), the top of the movable plate (3) is fixedly connected to a protective sleeve (4), the inner ring (5) is slidably connected inside the protective sleeve (4), the inner ring (5) is arranged to be wide at the top and narrow at the bottom, extrusion strips (6) are equidistantly arranged inside the protective sleeve (4), the extrusion strips (6) are inclined, the bottom ends of the extrusion strips (6) are elastically bent and fixedly connected to the inner wall of the inner ring (5), and the top ends of the extrusion strips (6) pass through the inner ring (5) and extend outward.

2. The multi-channel overvoltage protection device according to claim 1, characterized in that: The outer side of the sleeve (4) is symmetrically provided with sliding holes (41), and the outer side of the inner ring (5) is symmetrically fixedly connected with sliding blocks (51), and the sliding blocks (51) slide inside the corresponding sliding holes (41).

3. The multi-channel overvoltage protection device according to claim 2, characterized in that: The outer side of the sheath (4) is slidably connected to an outer ring (7), one end of the slider (51) is fixedly connected to the inner wall of the outer ring (7), the outer side of the outer ring (7) is fixedly connected to a fixing block (8), the inner part of the fixing block (8) is threadedly connected to a threaded rod (9), and the bottom end of the threaded rod (9) is rotatably connected to the movable plate (3).

4. The multi-channel overvoltage protection device according to claim 3, characterized in that: A knob (10) is fixedly connected to the top end of the threaded rod (9).

5. The multi-channel overvoltage protection device according to claim 1, characterized in that: The top end of the extruded strip (6) is spherical.

6. The multi-channel overvoltage protection device according to claim 1, characterized in that: The inner wall of the transverse frame (2) is symmetrically provided with sliding grooves (21), and sliding bars (31) are fixedly connected to both sides of the movable plate (3), and the sliding bars (31) are slidably connected inside the corresponding sliding grooves (21).

7. The multi-channel overvoltage protection device according to claim 1, characterized in that: A truncated cone-shaped circular hole (32) is provided inside the movable plate (3), and a positioning sleeve (11) is fixedly connected to the movable plate (3).

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