Water-blocking and buffering power cable protection structure

Abstract

The utility model discloses a water-blocking buffer power cable protection structure which comprises a wire core conductor, a sleeve layer is arranged on the outer side of the wire core conductor, a wrapping layer is arranged on the opposite outer side of the wire core conductor, buffer sleeves are annularly arranged on the sleeve layer at intervals, the interior of each buffer sleeve is hollow to form a buffer cavity, a water-blocking pad is circumferentially arranged along the outer side of the wrapping layer, and the water-blocking pad is arranged on the outer side of the wrapping layer. And the outer sleeve layer is close to the outer sleeve layer and is locally embedded in the peripheral part of the wrapping layer. According to the utility model, the wrapping layer and the sleeve layer which are staggered and matched are sequentially arranged outside the wire core conductor, and the water-blocking pad is arranged on the sleeve layer close to the outer side and partially embedded at the periphery of the wrapping layer, so that the waterproofness of the power cable is effectively improved, and meanwhile, the water-blocking pad is matched with the buffer sleeves which are annularly arranged on the sleeve layer at intervals, so that the waterproof performance of the power cable is improved. Deformation force in different directions after the cable is twisted can be borne, the bending position of the power cable is protected, and the practicability of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power cable construction, in particular to a water-blocking and buffering power cable protection structure. Background Art

[0002] Cables are typically composed of several or several groups of conductors twisted together into a rope-like structure. Each group of conductors is insulated from each other and twisted around a core. The entire structure is covered with a highly insulating coating. These cables are commonly used in power, communications, and related equipment. Existing power cables lack adequate protective structures, making them susceptible to damage during installation due to compression, collision, or twisting, which reduces their water and moisture resistance.

[0003] This case was created to solve the above problems. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a water-blocking and buffering power cable protection structure, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a water-blocking and buffering power cable protective structure, including a core conductor, a sheath layer is provided on the outer side, and a wrapping layer is provided on the opposite outer side, a buffer sleeve is arranged on the sheath layer in an annular manner, the interior of the buffer sleeve is hollow to form a buffer cavity, and a water-blocking pad is arranged along the outer circumference of the wrapping layer, which is close to the outer sheath layer and partially embedded in the outer peripheral part of the wrapping layer.

[0008] Preferably, a support cross seat is connected between the two inner walls along the circumferential direction in the buffer cavity, and the support cross seat has deformation toughness.

[0009] Preferably, the support cross seat is connected along the two inner walls of the buffer cavity in the circumferential direction and is arranged at multiple angles.

[0010] Preferably, the water-blocking pad is arc-shaped, and the interior of the water-blocking pad is filled with water-absorbing particles.

[0011] Preferably, the water-blocking pads are provided in plurality, and the edges of two adjacent water-blocking pads abut against each other to form an annular outward isolation ring.

[0012] (3) Beneficial effects

[0013] After adopting the above technical scheme, the utility model has the following advantages compared with the existing technology: the utility model is a water-blocking and buffering power cable protection structure, in which staggered wrapping layers and sleeves are arranged in sequence outside the core conductor, and a water-blocking pad is arranged close to the outer sleeve and partially embedded in the outer periphery of the wrapping layer, which effectively improves the waterproofness of the power cable without losing the wrapping of the core conductor. At the same time, the water-blocking pad cooperates with the buffer sleeve arranged circumferentially at intervals on the sleeve, which can withstand the deformation force in different directions after the cable is twisted, protect the bending position of the power cable, and improve the practicality of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0015] Figure 2 This is a front cross-sectional view of the utility model;

[0016] Figure 3 For this utility model Figure 2 A magnified schematic diagram of the local structure at point A.

[0017] In the figure: 1. core conductor; 2. wrapping layer; 3. jacket layer; 4.; 5. buffer sleeve; 6. buffer cavity; 7. water-blocking pad; 8. supporting cross seat. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below through the accompanying drawings and examples.

[0019] like Figure 1-3 The figure shows a water-blocking and buffering power cable protective structure, comprising a core conductor 1, with a sheath 3 provided on its outer side and a wrapping layer 2 provided on the opposite outer side for sealing. Circumferentially spaced buffer sleeves 5 are arranged on the sheath 3. The interior of the buffer sleeves 5 is hollow, forming a buffer cavity 6. When subjected to torsional forces, the buffer sleeves 5 can deform circumferentially to provide a circumferential buffering effect. The buffer sleeves 5 can also absorb radial forces to a certain extent. A water-blocking pad 7 is arranged circumferentially along the outer side of the wrapping layer 2, adjacent to the outer sheath 3 and partially embedded in the outer periphery of the wrapping layer 2, to further absorb radial forces caused by cable deformation.

[0020] Due to the existence of the buffer cavity 6, the buffer sleeve 5 is not easy to return to its original position after deformation and is easily damaged. Therefore, a supporting cross seat 8 is connected between the two inner walls along the circumferential direction in the buffer cavity 6. The supporting cross seat 8 has a certain deformation force and rigidity, which can realize the rigid recovery of the buffer sleeve 5.

[0021] It should be noted that the support cross seat 8 may not be arranged along the two inner walls of the buffer cavity 6, but may be connected at multiple angles to cope with deformation forces in different directions after the cable is twisted, and better protect the bending position of the power cable.

[0022] The water-blocking pad 7 is arc-shaped and functions as an inward extrusion limiter under normal conditions. The outer side of the water-blocking pad 7 abuts against the inner wall of the buffer sleeve 5 to achieve buffering deformation after radial force is applied.

[0023] The interior of the water-blocking pad 7 can be filled with water-absorbing particles to keep the inner core conductor 1 dry and absorb even minor leaks from the outer sheath 3, improving the cable's waterproof performance. Furthermore, multiple water-blocking pads 7 are provided, and the edges of adjacent pads 7 abut against each other to form an annular, outward-facing isolation ring, preventing external water from seeping inward.

[0024] The support cross seat 8 can be made of memory metal, which can provide support rigidity without deformation toughness. The wrapping layer 2, the jacket layer 3, and the water-blocking pad 7 can all be made of rubber. The jacket layer 3 is about 2-3 times thicker than the wrapping layer 2, with a nominal thickness of about 15 mm.

[0025] The above description is based on the embodiments for inspiration. Through the above description, relevant personnel can make various changes and modifications without departing from the scope of the invention. The technical scope of this new type of use is not limited to the content of the specification, and its protection scope must be determined according to the scope of the claims.

Claims

1. A water-blocking and buffering power cable protective structure, comprising a core conductor, characterized in that: A sleeve layer is provided on its outer side, and a wrapping layer is provided on the opposite outer side. Buffer sleeves are arranged circumferentially on the sleeve layer, and the interior of the buffer sleeve is hollow to form a buffer cavity. A water-blocking pad is arranged along the outer circumference of the wrapping layer, which is close to the outer sleeve layer and partially embedded in the outer periphery of the wrapping layer.

2. The water-blocking and buffering power cable protection structure according to claim 1, characterized in that: A support cross seat is connected between two inner walls in the circumferential direction in the buffer cavity, and the support cross seat has deformation toughness.

3. The water-blocking and buffering power cable protection structure according to claim 2, characterized in that: The support cross seat is connected along the two inner walls of the buffer cavity in the circumferential direction and is arranged at multiple angles.

4. The water-blocking and buffering power cable protection structure according to claim 1, characterized in that: The water-blocking pad is arc-shaped, and the interior of the water-blocking pad is filled with water-absorbing particles.

5. The water-blocking and buffering power cable protection structure according to claim 1, characterized in that: There are multiple water-blocking pads, and the edges of two adjacent water-blocking pads are abutted to form an annular outward isolation ring.

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