Anti-extrusion power cable

Abstract

The utility model relates to an anti-extrusion power cable. The technical problem to be solved by the utility model is to provide an anti-extrusion power cable. According to the technical scheme, the power cable comprises an inner compression-resistant assembly and three power core assemblies arranged around the inner compression-resistant assembly at equal intervals, the power core assemblies are sequentially wrapped by inner sheaths, filling layers and outer buffering assemblies, the inner compression-resistant assembly comprises steel wires and buffering rubber wrapping the steel wires, and the outer buffering assemblies are arranged on the outer sides of the steel wires. The outer buffer assembly comprises a compression-resistant rubber spring, a spring wrapping layer and a copper sheath which are sequentially arranged from inside to outside, and the copper sheath is of a threaded structure. Compared with the prior art, the cable has the advantages that due to the design of the inner and outer pressure-resistant structures, the outer copper sheath and the pressure-resistant rubber spring are matched to form a first layer of buffering, the copper sheath releases pressure through the threaded structure when the cable is pressed, and the pressure-resistant rubber spring has high internal resistance, can resist certain pressure and can rebound.

Description

Technical Field

[0001] The utility model relates to an anti-extrusion power cable. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas. Existing power cables are easily bent and deformed, or even broken, when they are squeezed during use, which causes the outer sheath of the cable to break and the inner core to disconnect, causing power supply problems. The applicability is poor, which seriously affects the safety of cable use. Improvements and optimizations are made to address this. Utility Model Content

[0003] In order to solve the above problems, the technical problem to be solved by the utility model is to provide an extrusion-resistant power cable.

[0004] The technical solution adopted by the utility model of the extrusion-resistant power cable is characterized in that it includes an inner pressure-resistant component, three power core components arranged at equal intervals around the inner pressure-resistant component, an inner sheath, a filling layer and an outer buffer component are wrapped in sequence outside the power core component, the inner pressure-resistant component includes a steel wire and a buffer rubber wrapped outside the steel wire, the outer buffer component includes a pressure-resistant rubber spring, a spring wrapping layer and a copper sheath arranged in sequence from the inside to the outside, and the copper sheath is a threaded structure.

[0005] The buffer rubber is a triangular structure, and the power core assembly is arranged tangentially to the buffer rubber.

[0006] The power core assembly comprises a power core conductor and an insulating layer wrapped outside the power core conductor, and the insulating layer is made of inorganic insulating material.

[0007] The power core conductor is a multi-strand twisted copper conductor.

[0008] The buffer rubber is provided with rubber buffer grooves for buffering at intervals.

[0009] The filling layer is made of inorganic high-dimensional filler.

[0010] The advantages of the anti-extrusion power cable of the utility model are: the design of double internal and external pressure-resistant structure, the outer copper sheath and the pressure-resistant rubber spring cooperate to form the first layer of buffer, when under pressure, the copper sheath releases pressure through the threaded structure and the pressure-resistant rubber spring has a very high internal resistance, can withstand a certain pressure and can rebound; the inner steel wire and the buffer rubber cooperate through the steel wire to effectively improve the overall tensile and compressive strength, so that the anti-extrusion ability of the power cable is greatly enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0012] Figure 1 This is the front view of the utility model anti-extrusion power cable;

[0013] Figure 2 It is a structural schematic diagram of the utility model anti-extrusion power cable;

[0014] Figure 3 It is a structural schematic diagram of the internal pressure-resistant component of the utility model. DETAILED DESCRIPTION

[0015] like Figure 1-3 As shown, the utility model relates to an extrusion-resistant power cable, which is characterized by comprising an inner pressure-resistant component 1, three power core components 2 arranged at equal intervals around the inner pressure-resistant component 1, an inner sheath 3, a filling layer 4 and an outer buffer component 5 wrapped in sequence outside the power core component 2, the inner pressure-resistant component 1 comprises a steel wire 7 and a buffer rubber 8 wrapped outside the steel wire 7, the outer buffer component 5 comprises a pressure-resistant rubber spring 10, a spring wrapping layer 11 and a copper sheath 12 arranged in sequence from the inside to the outside, the copper sheath 12 is a threaded structure, and has an inner and outer double pressure-resistant structure design, the outer copper sheath 12 and the pressure-resistant rubber spring 10 cooperate to form a first layer of buffering, when under pressure, the copper sheath 12 releases pressure through the threaded structure, and the pressure-resistant rubber spring 10 has a very high internal resistance, can withstand a certain pressure and can rebound; the inner steel wire 7 and the buffer rubber 8 cooperate with the steel wire 7 to effectively improve the overall tensile and compressive strength, so that the anti-extrusion ability of the power cable is greatly enhanced.

[0016] The buffer rubber 8 is a triangular structure, and the power core assembly 2 is tangent to the buffer rubber 8. The triangular structure is the most stable and firm. The tangent setting can transfer part of the pressure to the internal pressure-resistant assembly 1 when subjected to force, thereby effectively reducing damage to the power core assembly 2.

[0017] The power core assembly 2 includes a power core conductor 14 and an insulating layer 15 wrapped around the power core conductor 14 , and the insulating layer 15 is made of inorganic insulating material.

[0018] The power core conductor 14 is a multi-strand twisted copper conductor, which can effectively improve the tensile and extrusion resistance of the cable.

[0019] The buffer rubber 8 is provided with rubber buffer grooves 17 for buffering at intervals, which play an internal buffering role and relieve pressure and impact.

[0020] The filling layer 4 is made of inorganic high-dimensional filler, which can improve the physical properties of the cable, has good flame retardant properties and aging resistance, and has low cost.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. An extrusion-resistant power cable, characterized in that: The invention comprises an inner pressure-resistant component (1), three power core components (2) arranged at equal intervals around the inner pressure-resistant component (1), an inner sheath (3), a filling layer (4) and an outer buffer component (5) being wrapped in sequence outside the power core component (2), the inner pressure-resistant component (1) comprising a steel wire (7) and a buffer rubber (8) wrapped outside the steel wire (7), the outer buffer component (5) comprising a pressure-resistant rubber spring (10), a spring wrapping layer (11) and a copper sheath (12) being arranged in sequence from the inside to the outside, and the copper sheath (12) is a threaded structure.

2. The extrusion-resistant power cable according to claim 1, characterized in that: The buffer rubber (8) is a triangular structure, and the power core assembly (2) is arranged tangentially to the buffer rubber (8).

3. The extrusion-resistant power cable according to claim 1, characterized in that: The power core assembly (2) comprises a power core conductor (14) and an insulating layer (15) wrapped around the power core conductor (14), wherein the insulating layer (15) is made of an inorganic insulating material.

4. The extrusion-resistant power cable according to claim 3, characterized in that: The power core conductor (14) is a multi-strand twisted copper conductor.

5. The extrusion-resistant power cable according to claim 1, characterized in that: Rubber buffer grooves (17) for buffering are arranged at intervals on the buffer rubber (8).

6. The extrusion-resistant power cable according to claim 1, characterized in that: The filling layer (4) is made of inorganic high-dimensional filler.

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