A delta cable clamp

Abstract

The present application provides a kind of triangle cable clamp, cable clamp is fixed on support by bolt, it includes cover plate, base and Y type isolation component;Base is equipped with two connected grooves, two groove connection parts are boss, cover plate is fixed on the top of base by bolt, both are fixed and present triangle, Y type isolation component is inserted into boss, reduce the impact load after short circuit failure of cable, greatly reduce the damage probability of cable clamp.The present application can hinder the violent relative movement between base and isolation component, consume the electromagnetic vibration energy of cable in normal operation, reduce the impact speed, improve the damping effect, cable clamp is not easy to damage, prolong the service life of cable clamp;The present application avoids the damage of clamp due to fixed connection by flexible connection mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power transmission network, in particular to a Y-shaped cable clamp. BACKGROUND

[0002] With the continuous improvement of urbanization level, the demand for power transmission and distribution cable lines will continue to grow, and the construction and design technology of urban cable lines is continuously developed. The laying form of high-voltage power cable lines mainly includes cable tunnel, pipe, cable trench, etc., and the fixation and support of cables and their accessories mainly rely on the installation of cable fittings.

[0003] Cable fittings mainly include clamps, supports and columns, which are arranged in sections according to a certain spacing. The cable is fixed and installed on the support through the clamp. When a short-circuit fault occurs in the power grid, a large short-circuit current will be generated, forming a strong magnetic field acting on the current-carrying cable, which will bear a very large electric force. The electric force will transmit the impact load to the clamp that fixes the cable through contact, and will cause plastic deformation of the fitting, forming a safety hazard, or even directly breaking off, affecting the safe and stable operation of the power grid. When the power grid is normally operated, the three-phase alternating current flowing in the cable will induce an alternating magnetic field in the surrounding space, and the alternating magnetic field acting on the current-carrying cable will also generate an electric force. Although the electric force at this time is much smaller than that in the short-circuit state, it will also cause vibration of the cable and the fitting, and the sound is loud in high load, causing noise pollution. Long-term vibration of the fitting may also cause damage to the cable insulation layer, loosen the angle steel support, and damage the fixing bolts and fittings. Therefore, the clamp will directly affect the stress technical requirements of the cable line under normal operation and short-circuit fault conditions. The Y-shaped cable clamp in the prior art is a rigid connection, and the isolation component is only used to isolate the three-phase cable. After a short-circuit fault occurs in the rigidly connected cable, the cable will bear a large impact load, which will easily damage the cable clamp. SUMMARY

[0004] In order to overcome the deficiency that the cable clamp is easily damaged in the prior art, the present application provides a Y-shaped cable clamp, which is fixed on a support (5) by bolts and comprises a cover plate (1), a base (2) and a Y-shaped isolation component (3). The cover plate (1) is fixed above the base (2) by bolts, and the two are fixed in a Y shape. The base (2) is provided with two grooves and a boss between the two grooves, and the Y-shaped isolation component (3) is inserted into the boss, thereby reducing the impact load after a short-circuit fault of the cable and greatly reducing the damage probability of the cable clamp.

[0005] In order to achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0006] The present application provides a Y-shaped cable clamp, which comprises a cover plate (1), a base (2) and a Y-shaped isolation component (3).

[0007] The base (2) is provided with two connecting grooves, and the connecting part of the two grooves is a boss. The cover plate (1) is fixed on the top of the base (2), and the two are fixed in a triangular shape.

[0008] The Y-shaped isolation component (3) is inserted into the boss.

[0009] The protrusion of the boss is a hollow structure. The Y-shaped isolation component (3) is inserted into the hollow structure. The cable clamp also includes a damping layer (4), which is located between the hollow structure and the isolation component (3).

[0010] The damping layer (4) is one or more layers.

[0011] When the damping layer (4) is a single layer, the damping layer is disposed on the inner wall of the hollow structure or on the lower surface of the Y-shaped isolation component.

[0012] When the damping layer (4) is multi-layered, the positions of the damping layers include:

[0013] The damping layers are stacked and arranged in layers, all of which are located on the inner wall of the hollow structure, or stacked and arranged in layers, all of which are located on the lower surface of the Y-shaped isolation component, or a portion of the damping layers are located on the inner wall of the hollow structure and another portion of the damping layers are located on the lower surface of the Y-shaped isolation component.

[0014] The damping layer (4) is made of rubber-based composite material.

[0015] The cover plate (1), base (2) and Y-shaped isolation component (3) are all made of alloy or polymer materials.

[0016] The alloy is an aluminum alloy.

[0017] The polymer material is glass fiber.

[0018] The cable clamp is fixed to the bracket (5) by bolts.

[0019] The damping layer (4) is set by pasting.

[0020] Compared with the closest existing technology, the technical solution provided by the present invention has the following beneficial effects:

[0021] The triangular cable clamp provided by the present invention is fixed to the bracket (5) by bolts. It includes a cover plate (1), a base (2) and a Y-shaped isolation component (3). The base (2) is provided with two connecting grooves, and the connecting part of the two grooves is a boss. The cover plate (1) is fixed on the top of the base (2). After the two are fixed, they form a triangular shape. The Y-shaped isolation component (3) is inserted into the boss, which reduces the impact load after the cable has a short circuit fault and greatly reduces the probability of damage to the cable clamp.

[0022] The triangular cable clamp provided by the present application is provided with a damping layer (4), which can hinder the violent relative movement between the base (2) and the isolation assembly (3), consume the electromagnetic vibration energy of the cable in normal operation, generate a damping effect by energy dissipation, and react on the cable, thereby reducing the impact speed, improving the damping effect, preventing the cable clamp from being damaged, and prolonging the service life of the cable clamp.

[0023] The triangular cable clamp provided by the present application is connected in a flexible manner, avoids damage of the clamp due to fixed connection, and is suitable for different voltage levels, cable diameters, column spacings and tunnel sections. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view of the triangular cable clamp in the embodiment of the present application;

[0025] Figure 2 is a front view of the triangular cable clamp in the embodiment of the present application;

[0026] Figure 3 is a side view of the triangular cable clamp in the embodiment of the present application;

[0027] Figure 4 is a top view of the triangular cable clamp in the embodiment of the present application;

[0028] Figure 5 is a front view of the cover plate in the embodiment of the present application;

[0029] Figure 6 is a side view of the cover plate in the embodiment of the present application;

[0030] Figure 7 is a top view of the cover plate in the embodiment of the present application;

[0031] Figure 8 is a front view of the base in the embodiment of the present application;

[0032] Figure 9 is a side view of the base in the embodiment of the present application;

[0033] Figure 10 is a top view of the base in the embodiment of the present application;

[0034] Figure 11 is a front view of the isolation assembly in the embodiment of the present application;

[0035] Figure 12 is a side view of the isolation assembly in the embodiment of the present application;

[0036] Figure 13 is a top view of the isolation assembly in the embodiment of the present application;

[0037] Figure 14 This is a schematic diagram illustrating the relative displacement between the base and the isolation component in an embodiment of the present invention;

[0038] In the diagram, 1-cover plate, 2-base, 3-Y-type isolation component, 4-damping layer, 5-bracket. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings.

[0040] This invention provides a triangular cable clamp, which is fixed to a bracket 5 by bolts, such as... Figures 1-4 As shown, the cable clamp includes a cover plate 1, a base 2, and a Y-shaped isolation assembly 3;

[0041] The base 2 has two connecting grooves, and the connecting part of the two grooves is a boss. The cover plate 1 is detachably fixed on the top of the base 2 (specifically fixed with bolts) to fix the cable position. After the cover plate 1 and the base 2 are fixed, they form a triangular shape. The Y-type isolation component 3 is inserted into the boss. The three-phase cables pass through the three cavities formed by the cover plate 1, the base 2 and the Y-type isolation component 3 respectively, which are used to fix the cables.

[0042] The specific structure of cover plate 1 is as follows Figures 5-7 As shown, the specific structure of base 2 is as follows: Figures 8-10 As shown, the specific structure of the Y-type isolation component 3 is as follows: Figures 11-13 As shown.

[0043] The protruding part of the boss is a hollow structure, and the Y-shaped isolation component 3 is inserted into the hollow structure. The cable clamp also includes a damping layer 4, which is located between the groove and the isolation component 3. That is, the base 2 and the isolation component 3 are separated by the damping layer 4. When relative displacement occurs between the cables, relative displacement will occur between the base 2 and the isolation component 3 (e.g., Figure 14 As shown, the damping layer 4 is uniformly stretched or compressed, which hinders the violent relative movement between the base 2 and the isolation component 3.

[0044] The damping layer 4 can be one or more layers.

[0045] When the damping layer 4 is a single layer, the damping layer is placed on the inner wall of the hollow structure or on the lower surface of the Y-shaped isolation component.

[0046] When damping layer 4 is multi-layered, the locations of the damping layers include:

[0047] Multiple damping layers are stacked and arranged, all located on the inner wall of the hollow structure; or they are stacked and arranged, all located on the lower surface of the Y-shaped isolation component; or some damping layers are located on the inner wall of the hollow structure, and others are located on the lower surface of the Y-shaped isolation component. These arrangements can be made by pasting.

[0048] The damping layer 4 is made of rubber-based composite material, and the technical parameters of the rubber-based composite material are shown in Table 1.

[0049] Table 1

[0050]

[0051] The cover plate 1, the base 2 and the Y-shaped isolation assembly 3 are made of alloy or high polymer material.

[0052] The alloy is aluminum alloy, and the high polymer material is glass fiber.

[0053] The cavities between the Y-shaped isolation assembly 3 and the cover plate 1 and the cavities formed between the two grooves are used for placing cables.

[0054] The triangular cable clamp can meet the fixing and installation requirements of the cable in the tunnel, can compensate the deformation and displacement of the clamp caused by the cable impact load when a short-circuit fault occurs in the power grid, and can improve the protection ability of the equipment vibration caused by the alternating electromagnetic action of the cable in the normal operation.

[0055] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it, and the ordinary skilled in the art can still modify or equivalently replace the specific embodiments of the present application according to the above examples, and any modification or equivalent replacement which does not deviate from the spirit and scope of the present application is within the protection scope of the claims of the present application.

Claims

1. A delta cable clamp characterized in that, It comprises a cover plate (1), a base (2) and a Y-shaped isolation component (3); The base (2) is provided with two connected grooves, the connection part of the two grooves is a boss, the cover plate (1) is fixed above the base (2), and the two are fixed in a triangular shape; The Y-shaped isolation component (3) is inserted into the boss; the Y-shaped isolation component (3) is connected only with the boss; The convex part of the boss is a hollow structure, the Y-shaped isolation component (3) is inserted into the hollow structure, and the cable clamp further comprises a damping layer (4), which is located between the hollow structure and the Y-shaped isolation component (3).

2. The delta cable clamp of claim 1, wherein, The damping layer (4) is one or more layers; The damping layer is arranged on the inner wall of the hollow structure or the lower surface of the Y-shaped isolation component.

3. The delta cable clamp of claim 2, wherein, When the damping layer (4) is a plurality of layers, the positions of the plurality of damping layers further comprise: The plurality of damping layers are arranged in layers, a part of the damping layers are arranged on the inner wall of the hollow structure, and another part of the damping layers are arranged on the lower surface of the Y-shaped isolation component.

4. The delta cable clamp of any one of claims 1-3, wherein, The damping layer (4) adopts a rubber-based composite material.

5. The delta cable clamp of claim 1, wherein, The cover plate (1), the base (2) and the Y-shaped isolation component (3) all adopt aluminum alloy or glass fiber.

6. The delta cable clamp of claim 1, wherein, The cable clamp is fixed on the support (5) by bolts.

7. The triangular cable clamp of claim 2 or 3, wherein, The damping layer (4) is arranged by pasting.

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