35KV flame-retardant waterproof crosslinked polyethylene cable

Abstract

The utility model discloses a 35KV flame-retardant waterproof cross-linked polyethylene cable, which comprises a main body, the main body comprises a sleeve and buffer parts, the buffer parts are arranged on the peripheral side of the sleeve in a circumferential array, each buffer part comprises a connecting block, the side surface of each connecting block is fixedly connected with a spring, and the side surface of each connecting block is fixedly connected with the corresponding spring. The springs are fixedly connected with protective sleeves through soft cushions, and the connecting blocks and the springs are arranged in a linear array and are arranged in two groups. According to the structure, the springs, the protective sleeve and the supporting frame are arranged, the springs can play a role in buffering and damping when the cable is impacted, the situation that the cable is damaged during work and influences life of people is prevented, the protective sleeve plays a role in blocking and secondary protection, and the supporting frame can be folded and unfolded, so that the cable is protected from being damaged, and the service life of the cable is prolonged. The equipment can be suitable for different environments, and the flexibility of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cross-linked polyethylene cables, in particular to a 35KV flame-retardant and waterproof cross-linked polyethylene cable. Background Art

[0002] Power cables are cables 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. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the trunk lines of the power system, including 1-500KV and various voltage levels above. The existing 35KV cross-linked cables have poor flame retardant properties. When encountering open flames, the cables are easily burned, which reduces the service life of the cables and has poor practicality. In Hubei, there is more rain in spring and summer, so the waterproof performance of the cables also needs to be guaranteed to avoid long-term rain from affecting the internal structure of the cables. In winter, the temperature is low, and the inside of the cables also needs to be well insulated and anti-freeze protected.

[0003] At present, when cables are working at high altitudes, the completed cables are directly designed and completed by relevant equipment, and the outside is not wrapped with flame retardant and fireproof materials. At the same time, the cables are easily impacted by flying birds or falling branches, and there is no anti-collision component protection, which will have consequences that affect human life. Utility Model Content

[0004] The utility model provides a 35KV flame-retardant and waterproof cross-linked polyethylene cable, which can play a buffering and shock-absorbing role when the cable is impacted by arranging a spring to prevent the cable from being damaged and affecting people's lives. It can play a barrier role and a secondary protection role by arranging a protective cover. It can be folded and opened by arranging a support frame, so that the equipment can be applied to different environments, thereby improving the flexibility of the equipment.

[0005] To achieve the above object, a 35KV flame-retardant and waterproof cross-linked polyethylene cable is provided, comprising a main body, the main body comprising a sleeve and a buffer component, the buffer component is arranged in a circumferential array on the circumference of the sleeve, the buffer component comprises a connecting block, the side surface of the connecting block is fixedly connected with a spring, the spring is fixedly connected with a protective cover through a cushion, the connecting block and the spring are arranged in a linear array and the number is set to 2 groups. The sleeve is provided to provide a covering effect, the buffer component is provided to provide a buffering effect, the connecting block is provided to provide a connecting effect, the spring is provided to provide a buffering and shock-absorbing protection effect, and the protective cover is provided to provide a blocking effect.

[0006] According to the 35KV flame-retardant and waterproof cross-linked polyethylene cable, the side of the sleeve is fixedly connected to a support frame through a rotating rod, and the bottom of the support frame is fixedly connected to a Y-shaped rod, and the support frame can arbitrarily change the angle between the support frame and the sleeve as the rotating rod rotates. The support frame is provided to provide a supporting effect, and the Y-shaped rod is provided to provide a stabilizing effect.

[0007] According to the 35KV flame-retardant and waterproof cross-linked polyethylene cable, the interior of the sleeve is a hollow structure and a lever is fixedly connected to the top, and the wall thickness of the sleeve is provided with a key and a slot. The lever is provided to provide a function of opening and closing the medium, the key is provided to provide a function of clamping and fixing, and the slot is provided to provide a function of clamping the path.

[0008] According to the 35KV flame-retardant and waterproof cross-linked polyethylene cable, the protective sleeve is annular and fits the outer side of the sleeve. The purpose of setting the protective sleeve annular and fits the outer side of the sleeve is to make the outer shape the same as the internal components to fully protect the internal components.

[0009] According to the 35KV flame-retardant and waterproof cross-linked polyethylene cable, the key and the slot are arranged in a linear array and their positions are corresponding, and the bottom of the key is pointed. The key and the slot are arranged in a linear array and their positions are corresponding in order to achieve the best clamping and fixing effect of the two parts, and the bottom of the key is pointed in order to make it easier for the key to enter the slot and be inserted.

[0010] According to the 35KV flame-retardant and waterproof cross-linked polyethylene cable, a flame-retardant and waterproof component is arranged inside the sleeve, and the flame-retardant and waterproof component is arranged from the outside to the inside with a flame-retardant and waterproof outer sheath, a non-magnetic metal belt armor layer, a cold-resistant rubber heat-insulating buffer sheath, an inner flame-retardant layer, an inner waterproof layer, and a cross-linked polyethylene insulation filling layer. The flame-retardant and waterproof outer sheath and the inner waterproof layer are provided to provide a waterproof effect, the non-magnetic metal belt armor layer is provided to provide good mechanical protection and electromagnetic shielding function, the cold-resistant rubber heat-insulating buffer sheath is provided to provide cold-resistant and heat-insulating effect, the inner flame-retardant layer is provided to provide a flame-retardant effect, and the cross-linked polyethylene insulation filling layer is provided to provide excellent corrosion resistance and good electrical insulation.

[0011] According to the 35KV flame-retardant and waterproof cross-linked polyethylene cable, the cross-linked polyethylene insulation filling layer is provided with a battery core and a conductor component, and the battery core is located at the periphery of the conductor component and arranged in a herringbone shape. The battery core is provided to store electric energy. The conductor component is provided to provide a conductor and an insulating function.

[0012] The beneficial effects of the utility model are as follows: by arranging a spring, a protective cover and a support frame, the spring can play a buffering and shock-absorbing role when the cable is impacted, thereby preventing the cable from being damaged and affecting people's lives; the protective cover can play a barrier role and play a secondary protection role; the support frame can be folded and opened, so that the device can be suitable for different environments, thereby improving the flexibility of the device.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the overall structure of a 35KV flame-retardant and waterproof cross-linked polyethylene cable of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the buffer component of the utility model;

[0017] Figure 3 This is a partial structural schematic diagram of a 35KV flame-retardant and waterproof cross-linked polyethylene cable of the utility model;

[0018] Figure 4 It is a cross-sectional view of the buffer component of the utility model;

[0019] Figure 5 It is a top view of the flame retardant and waterproof component of the utility model.

[0020] Legend:

[0021] 1. Main body; 11. Sleeve; 12. Buffer component; 121. Connecting block; 122. Spring; 123. Protective cover; 13. Support frame; 14. Y-shaped rod;

[0022] 21. dial handle; 22. card key; 23. card slot;

[0023] 2. Flame retardant and waterproof components; 31. Flame retardant and waterproof outer sheath; 32. Non-magnetic metal belt armor layer; 33. Cold-resistant rubber insulation buffer sheath; 34. Inner flame retardant layer; 35. Inner waterproof layer; 36. Cross-linked polyethylene insulation filling layer; 37. Battery core; 38. Conductor parts. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] Reference Figures 1 to 5 The utility model embodiment is a 35KV flame-retardant and waterproof cross-linked polyethylene cable, which includes a main body 1, the main body 1 includes a sleeve 11 and a buffer component 12, the buffer component 12 is arranged in a circular array on the circumference of the sleeve 11, and the buffer component 12 includes a connecting block 121, and the side surface of the connecting block 121 is fixedly connected with a spring 122, and the spring 122 is fixedly connected with a protective cover 123 through a cushion, and the protective cover 123 is annular and fits the outer side of the sleeve 11. The width of the protective cover 123 is slightly larger than the connecting block 121. The connecting block 121 and the spring 122 are arranged in a linear array and the number is set to 2 groups. The number of buffer components 12 arranged in an equidistant array around the circumference is set to 4, wrapping the circumference of the sleeve 11, wherein the material of the spring 122 is 65Mn steel, which is a carbon structural steel with high strength and toughness, good elasticity and fatigue life, high heat resistance and corrosion resistance, and is widely used in spring manufacturing. The protective cover 123 is made of aluminum alloy, which is light in weight, high in strength, and has good corrosion resistance and oxidation resistance, and can operate stably for a long time in harsh environments.

[0026] The side of the sleeve 11 is fixedly connected to a support frame 13 through a rotating rod, and a Y-shaped rod 14 is fixedly connected to the bottom of the support frame 13. The support frame 13 can arbitrarily change the angle between the support frame 13 and the sleeve 11 as the rotating rod rotates. The support frame 13 is located on the peripheral side of the sleeve 11 and does not affect the operation of the buffer component 12. The support frame 13 can be folded or opened by the rotating rod, which can adapt to the work of cables in different environments. Among them, the Y-shaped rod 14 is made of aluminum alloy, which has the advantages of light weight and corrosion resistance, and has excellent strength, toughness and plasticity. Because its load-bearing capacity requirement is not high, this material is selected based on a variety of considerations.

[0027] The interior of the sleeve 11 is a hollow structure and a dial handle 21 is fixedly connected to the top. The wall thickness of the sleeve 11 is provided with a key 22 and a slot 23. The number of keys 22 and slots 23 is set to 8 groups. The upper part of the key 22 has a larger radius, a thicker round hole, and a more pointed lower part, which is convenient for the key 22 to be inserted into the slot 23 and can provide a tighter clamping effect. The key 22 and the slot 23 are arranged in a linear array and the positions are corresponding. The bottom of the key 22 is pointed. The two keys 22 are each 5 cm away from the top and bottom of the sleeve 11.

[0028] The flame retardant and waterproof component 3 is arranged inside the sleeve 11, and the flame retardant and waterproof component 3 is provided with a flame retardant and waterproof outer sheath 31, a non-magnetic metal belt armor layer 32, a cold-resistant rubber heat-insulating buffer sheath 33, an inner flame retardant layer 34, an inner waterproof layer 35, and a cross-linked polyethylene insulation filling layer 36 from the outside to the inside. The flame retardant and waterproof outer sheath 31 is made of highly flame-retardant polyvinyl chloride material, has good weather resistance, can be used for a long time under harsh climatic conditions, and is not easy to age or break. It has good corrosion resistance and is suitable for use under various environmental conditions. It has very low conductivity, can effectively isolate current, can maintain structural stability under high temperature conditions, and is not easy to deform and melt. The cold-resistant rubber heat-insulating buffer sheath 33 is made of EPDM rubber or EPDM rubber, has excellent heat resistance and chemical stability, can form a stable chemical structure under high temperature and high pressure, and has good wear resistance and elasticity. The thickness of the inner flame retardant layer 34 is 1-2 mm, and the inner waterproof layer 35 adopts a polyurethane inner sheath, which is a thermoplastic polyurethane elastomer with a thickness of 2-4 mm and a hardness range of 60HA-85HD.

[0029] The cross-linked polyethylene insulation filling layer 36 is provided with a battery core 37 and a conductor component 38. The battery core 37 is located outside the conductor component 38 and arranged in a herringbone shape. The battery core 37 includes a conductor shielding layer, a cross-linked polyethylene insulation layer, an insulation shielding layer, and a semi-conductive PE sheath component.

[0030] Working principle: When in use, place the conductor component 38 in the innermost layer, wrap the outer periphery of the battery core 37 in a herringbone shape, and wrap from the outside to the inside with a flame retardant and waterproof outer sheath 31, a non-magnetic metal belt armor layer 32, a cold-resistant rubber heat-insulating buffer sheath 33, an inner flame retardant layer 34, an inner waterproof layer 35, and a cross-linked polyethylene insulating filling layer 36. After completion, move the lever 21 to pry it open in the direction of the opposite force, and put the sleeve 11 on the outer periphery of the outermost flame retardant and waterproof outer sheath 31, align the position of the key 22 with the slot 23 and close it to tighten it. When the outside of the cable is impacted, it is blocked by the buffer component 12, and the internal spring 122 provides a buffering and shock-absorbing effect to better protect the operation of the cable.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A 35KV flame-retardant and waterproof cross-linked polyethylene cable, characterized in that: The invention comprises a main body (1), wherein the main body (1) comprises a sleeve (11) and a buffer component (12), wherein the buffer component (12) is arranged in a circular array on the circumferential side of the sleeve (11), wherein the buffer component (12) comprises a connecting block (121), wherein a spring (122) is fixedly connected to a side surface of the connecting block (121), wherein the spring (122) is fixedly connected to a protective cover (123) via a cushion, and wherein the connecting block (121) and the spring (122) are arranged in a linear array and the number is set to be 2 groups.

2. A 35KV flame-retardant and waterproof cross-linked polyethylene cable according to claim 1, characterized in that: The side of the sleeve (11) is fixedly connected to a support frame (13) via a rotating rod, and the bottom of the support frame (13) is fixedly connected to a Y-shaped rod (14). The support frame (13) can arbitrarily change the angle between the support frame (13) and the sleeve (11) as the rotating rod rotates.

3. A 35KV flame-retardant and waterproof cross-linked polyethylene cable according to claim 1, characterized in that: The interior of the sleeve (11) is a hollow structure and a lever (21) is fixedly connected to the top. The wall thickness of the sleeve (11) is provided with a key (22) and a slot (23).

4. A 35KV flame-retardant and waterproof cross-linked polyethylene cable according to claim 1, characterized in that: The protective sleeve (123) is in the shape of a ring and fits the outer side of the sleeve (11).

5. A 35KV flame-retardant and waterproof cross-linked polyethylene cable according to claim 1, characterized in that: The latch keys (22) and the latch slots (23) are arranged in a linear array and have corresponding positions, and the bottom of the latch keys (22) is pointed.

6. A 35KV flame-retardant and waterproof cross-linked polyethylene cable according to claim 1, characterized in that: The sleeve (11) is provided with a flame retardant waterproof component (3) inside, and the flame retardant waterproof component (3) is provided with a flame retardant waterproof outer sheath (31), a non-magnetic metal belt armor layer (32), a cold-resistant rubber heat-insulating buffer sheath (33), an inner flame retardant layer (34), an inner waterproof layer (35), and a cross-linked polyethylene insulation filling layer (36) from the outside to the inside.

7. A 35KV flame-retardant and waterproof cross-linked polyethylene cable according to claim 1, characterized in that: The cross-linked polyethylene insulation filling layer (36) is provided with an electric core (37) and a conductor component (38) inside, and the electric core (37) is located outside the conductor component (38) and arranged in a herringbone shape.

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