Weather-proof wear-resistant power cable

Abstract

The utility model relates to the field of power cables, in particular to a weather-proof wear-resistant power cable, which comprises a plurality of copper cores, an outer protection assembly and an inner protection assembly, an insulating layer is arranged on the peripheral surface of each copper core, the outer protection assembly comprises a wear-resistant layer and a wear-resistant block, the inner protection assembly is arranged on the outer side of each copper core, and the wear-resistant blocks are arranged on the outer side of the inner protection assembly. The inner protection assembly is arranged outside the copper core and wraps the copper core, the wear-resistant layer is arranged outside the inner protection assembly and wraps the inner protection assembly, and the wear-resistant blocks are arranged on the wear-resistant layer, so that the power cable has a good wear-resistant effect, the problem that the power cable is damaged due to wear is effectively avoided, and the service life of the power cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of power cables, in particular to a weather-resistant and wear-resistant power cable. Background Art

[0002] Power cables are cables used to transmit and distribute electric 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 electric energy in the trunk lines of power systems, including 1-500KV and above various voltage levels, and various insulation power cables.

[0003] At present, a special high-temperature resistant power cable is applied for in a Chinese utility model patent application with a publication date of May 3, 2022 and publication number CN216435520U, whose structure includes a conductor, and the outside of the conductor is wrapped with a thermal insulation shielding layer, a fire barrier layer, a PVC insulation layer, an electromagnetic shielding layer, a wrapping tape and an outer sheath in sequence from the inside to the outside; the conductor includes three conductors equidistantly distributed on the inner side of the thermal insulation shielding layer, a limiting member is provided at the center position of the conductor, and the limiting member includes a frame, and three support rods are fixedly arranged on the frame, and an arc-shaped first supporting portion is provided at the end of each support rod; the limiting member also includes a bearing rod located between adjacent support rods, and an arc-shaped second supporting portion connected to the inner side of the thermal insulation shielding layer is provided at the end of each bearing rod; an optical unit is provided on the inner side of the thermal insulation shielding layer, and is filled with a non-wet filler.

[0004] However, the wear resistance of this special high-temperature resistant power cable is not very ideal. During use, the outer surface of the power cable is easily worn, which reduces the protection of the power cable, thereby causing damage to the power cable and posing a safety hazard. For this reason, we propose a wear-resistant power cable. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that when the outer skin of the power cable is damaged, the protection of the power cable is reduced, and the power cable is damaged to cause safety hazards, and proposes a weather-resistant and wear-resistant power cable.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: a weather-resistant and wear-resistant power cable, comprising a copper core, an outer protection component, and an inner protection component, wherein the copper core is provided with multiple components, an insulating layer is provided on the outer peripheral surface of the copper core, the outer protection component comprises a wear-resistant layer and a wear-resistant block, the inner protection component is arranged on the outer side of the copper core and wraps the copper core, the wear-resistant layer is arranged on the outer side of the inner protection component and wraps the inner protection component, and the wear-resistant block is arranged on the wear-resistant layer.

[0008] By adopting the above technical scheme, when friction occurs in the cable during use, due to the presence of the wear-resistant balls, the cable will not directly contact the ground and will not cause damage to the cable, thus avoiding safety accidents caused by damage to the outer skin of the cable. Moreover, as a semi-arc-shaped body, the wear-resistant block has a small contact area with the ground and generates little friction, so the loss caused by friction is also relatively small, which greatly improves the service life of the cable. Moreover, chromium carbide is a high-melting-point material with good wear resistance, corrosion resistance, and oxidation resistance in a high-temperature environment. The wear-resistant layer and the wear-resistant balls use it as the main material, avoiding the problem of damage to the power cable due to wear, thereby improving the service life of the power cable.

[0009] Optionally, a connection channel is formed between the multiple copper cores, a connection steel rope is passed through the connection channel, and the outer peripheral surface of the connection steel rope abuts against the outer peripheral surface of the insulation layer.

[0010] By adopting the above technical solution, the connecting steel rope is made of a relatively hard material, so that when the user drags the cable, the internal structure of the cable is not easily damaged, and the copper core will not break easily. At the same time, the position of the copper core can also be fixed, thereby increasing the service life of the cable.

[0011] Optionally, a buffer layer is provided on the outer circumferential surface of the connecting steel rope, and the outer circumferential surface of the buffer layer abuts against the outer circumferential surface of the insulating layer.

[0012] By adopting the above technical solution, the material of the buffer layer is rubber material, which has good wear resistance, high elasticity, breaking strength and elongation, and can effectively avoid damage caused by direct squeezing of the copper core and the connecting steel rope.

[0013] Optionally, the inner protection component includes a filling layer and a weather-resistant layer, the filling layer is arranged on the outside of the copper core and wraps the copper core, the weather-resistant layer is arranged on the outside of the filling layer, and the inner circumference of the weather-resistant layer abuts against the outer circumference of the filling layer.

[0014] By adopting the above technical scheme, the filling layer is made of low-smoke halogen-free glass fiber rope. Glass fiber is an engineering material with the advantages of being non-flammable, corrosion-resistant, high-temperature resistant, low heat absorption, and small deformation coefficient. It can effectively protect the copper core inside the cable. In order to improve the weather resistance of the power cable during its use, epoxy resin is sprayed on the cable weather-resistant layer. Epoxy resin refers to a general term for a class of polymers containing more than two epoxy groups in the molecule. It is a condensation product of epichlorohydrin and bisphenol A or polyol. Due to the chemical activity of the epoxy group, it can be opened with a variety of compounds containing active hydrogen, and cured and cross-linked to form a network structure. Therefore, it is a thermosetting resin with good bonding strength and chemical resistance, and can effectively improve the weather resistance of the cable in different environments.

[0015] Optionally, the inner protection component also includes a protective layer and an anti-corrosion layer, the protective layer is arranged on the outside of the weather-resistant layer, and the inner circumference of the protective layer abuts against the outer circumference of the weather-resistant layer, and the anti-corrosion layer is arranged on the outside of the protective layer, and the inner circumference of the anti-corrosion layer abuts against the outer circumference of the protective layer.

[0016] By adopting the above technical scheme, in order to improve the protection effect of the power cable during the use of the power cable, a protective layer is set, and the material of the protective layer is galvanized low-carbon steel wire material. During the use of the cable, the galvanized low-carbon steel wire material enhances the anti-deformation effect of the power cable and improves the rigidity of the power cable. At the same time, in order to improve the corrosion resistance of the cable during use, an anti-corrosion layer is set. The anti-corrosion layer is made of fluororubber. Fluororubber has a high chemical stability and is the best medium resistance among all elastomers. It can effectively prevent corrosive gases in the air from corroding the cable.

[0017] Optionally, reinforcing ribs are provided in the protective layer, and the reinforcing ribs are composed of a plurality of steel wires twisted together.

[0018] By adopting the above technical solution, the reinforcing ribs are composed of a number of steel wires twisted together, which can allow the cable to have good tensile strength when it is deformed, thereby improving the tensile strength of the cable.

[0019] Optionally, a shielding layer is further provided between the filling layer and the weather-resistant layer, and the shielding layer is made of a semi-conductive material.

[0020] By adopting the above technical scheme, in order to improve the shielding effect of the power cable against the electric field during the use of the power cable, a shielding layer can be arranged between the filling layer and the weather-resistant layer, and the material of the shielding layer is a semi-conductive material. The semi-conductive material can make the electric field on the outer surface of the wire core uniform, avoid local discharge between the conductor and the insulation due to the rough surface of the conductor and the air gap caused by the twisting of the wire core, and avoid the problem of local discharge between the conductor and the metal sheath due to defects such as cracks on the insulation surface of the wire and cable, thereby improving the shielding effect of the power cable against the electric field.

[0021] In summary, the present invention includes at least one of the following beneficial technical effects:

[0022] 1. When the cable is rubbed during use, due to the presence of wear-resistant balls, the cable will not come into direct contact with the ground, and will not cause damage to the cable, thus avoiding safety accidents caused by damage to the outer skin of the cable. In addition, as a semi-arc-shaped body, the wear-resistant block has a small contact area with the ground and generates little friction, so the loss caused by friction is also relatively small, which greatly improves the service life of the cable. Chromium carbide is a high-melting-point material with good wear resistance, corrosion resistance, and oxidation resistance in a high-temperature environment. The wear-resistant layer and wear-resistant balls use it as the main material, avoiding the problem of damage to the power cable due to wear, thereby improving the service life of the power cable.

[0023] 2. Since the cable is equipped with a weather-resistant layer, it effectively solves the safety issues of cables used in different environments and the poor weather resistance of traditional cables, and reduces the safety accidents caused by insufficient corrosion resistance in traditional power cables.

[0024] 3. Due to the setting of the protective layer, the anti-deformation effect of the power cable is enhanced, and the rigidity of the power cable is improved. At the same time, the reinforcement ribs inside the protective layer can make the cable have better tensile strength when deformation occurs, thereby improving the tensile strength of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the present application;

[0027] Explanation of the accompanying drawings: 10, copper core; 11, insulation layer; 20, connecting steel rope; 21, buffer layer; 31, filling layer; 32, shielding layer; 33, weather-resistant layer; 34, protective layer; 35, reinforcement ribs; 36, anti-corrosion layer; 41, wear-resistant layer; 42, wear-resistant blocks. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] This embodiment discloses a weather-resistant and wear-resistant power cable: Figure 1 to Figure 2 The weather-resistant and wear-resistant power cable includes a copper core 10, an outer protection component, and an inner protection component. The copper core 10 is provided with multiple parts. An insulating layer 11 is provided on the outer peripheral surface of the copper core 10. The inner protection component is wrapped on the outer surface of the insulating layer 11, and the outer protection component is wrapped outside the inner protection component. The outer protection component and the inner protection component are both used to protect the cable.

[0030] Reference Figure 1 to Figure 2 A connection channel is formed between the multiple copper cores 10, and a connection steel rope 20 is passed through the connection channel. A buffer layer 21 is provided on the outer peripheral surface of the connection steel rope 20, and the outer peripheral surface of the buffer layer 21 abuts against the outer peripheral surface of the insulation layer 11.

[0031] The connecting steel rope 20 is made of a relatively hard material, so when the user drags the cable, the internal structure of the cable is not easily damaged, and the copper core 10 will not break easily. At the same time, the position of the copper core 10 can also be fixed, thereby increasing the service life of the cable. The buffer layer 21 is made of rubber material, which has good wear resistance, high elasticity, breaking strength and elongation, and can effectively avoid damage caused by direct squeezing of the copper core 10 and the connecting steel rope 20.

[0032] Reference Figure 1 to Figure 2 The inner protection component includes a filling layer 31 and a weather-resistant layer 33. The filling layer 31 is arranged on the outside of the copper core 10 and wraps the copper core 10. The weather-resistant layer 33 is arranged on the outside of the filling layer 31, and the inner circumference of the weather-resistant layer 33 abuts against the outer circumference of the filling layer 31.

[0033] The filling layer 31 is made of low-smoke halogen-free glass fiber rope. Glass fiber is an engineering material with the advantages of being non-flammable, corrosion-resistant, high-temperature resistant, low heat absorption, and small deformation coefficient. It can effectively protect the copper core 10 inside the cable. In order to improve the weather resistance of the power cable during use, epoxy resin is sprayed on the cable weather-resistant layer 33. Epoxy resin refers to a general term for a class of polymers containing more than two epoxy groups in the molecule. It is a condensation product of epichlorohydrin and bisphenol A or polyols. Due to the chemical activity of the epoxy group, it can be opened with a variety of compounds containing active hydrogen, and cured and cross-linked to form a network structure. Therefore, it is a thermosetting resin with good bonding strength and chemical resistance, and can effectively improve the weather resistance of the cable in different environments.

[0034] Reference Figure 1 to Figure 2A shielding layer 32 is further provided between the filling layer 31 and the weather-resistant layer 33 , and the shielding layer 32 is made of a semi-conductive material.

[0035] In order to improve the shielding effect of the power cable against the electric field during the use of the power cable, a shielding layer 32 can be arranged between the filling layer 31 and the weather-resistant layer 33. The material of the shielding layer 32 is a semi-conductive material. The semi-conductive material can make the electric field on the outer surface of the core uniform, avoid local discharge between the conductor and the insulation due to the rough surface of the conductor and the air gap caused by the twisting of the core, and avoid local discharge between the metal sheath due to defects such as cracks on the insulation surface of the wire and cable, thereby improving the shielding effect of the power cable against the electric field.

[0036] Reference Figure 1 to Figure 2 The inner protection component also includes a protective layer 34 and an anti-corrosion layer 36. The protective layer 34 is arranged on the outside of the weather-resistant layer 33, and the inner circumference of the protective layer 34 abuts against the outer circumference of the weather-resistant layer 33. Reinforcement ribs 35 are arranged in the protective layer 34, and the reinforcement ribs 35 are composed of a number of steel wires twisted together. The anti-corrosion layer 36 is arranged on the outside of the protective layer 34, and the inner circumference of the anti-corrosion layer 36 abuts against the outer circumference of the protective layer 34.

[0037] In order to improve the protection effect of the power cable during the use of the power cable, a protective layer 34 is provided. The material of the protective layer 34 is galvanized low-carbon steel wire material. During the use of the cable, the galvanized low-carbon steel wire material enhances the deformation resistance of the power cable and improves the rigidity of the power cable. The reinforcing rib 35 is composed of a number of steel wires twisted together, which can make the cable have good tensile strength when deformed, thereby improving the tensile strength of the cable. At the same time, in order to improve the corrosion resistance of the cable during use, an anti-corrosion layer 36 is provided. The anti-corrosion layer 36 is made of fluororubber. Fluororubber has a high chemical stability and is the best medium-resistant among all elastomers. It can effectively prevent corrosive gases in the air from corroding the cable.

[0038] Reference Figure 1 to Figure 2 The outer protection component includes a wear-resistant layer 41 and a wear-resistant block 42. The wear-resistant layer 41 is arranged on the outside of the inner protection component and wraps the inner protection component. The wear-resistant block 42 is arranged on the wear-resistant layer 41. The wear-resistant layer 41 and the wear-resistant block 42 are formed integrally.

[0039] When friction occurs in the cable during use, due to the presence of the wear-resistant balls, the cable will not come into direct contact with the ground and will not cause damage to the cable, thus avoiding safety accidents caused by damage to the outer skin of the cable. In addition, the wear-resistant block 42, as a semi-arc body, has a small contact area with the ground and generates little friction, so the loss caused by friction is also relatively small, greatly improving the service life of the cable. Chromium carbide is a high-melting-point material with good wear resistance, corrosion resistance, and oxidation resistance in a high-temperature environment. The wear-resistant layer 41 and the wear-resistant balls use it as the main material, avoiding the problem of damage to the power cable due to wear, thereby improving the service life of the power cable.

[0040] The implementation principle of the weather-resistant and wear-resistant power cable of this embodiment is:

[0041] Firstly, during the use of the power cable, since the material of the buffer layer 21 is rubber material, the rubber material has good wear resistance, high elasticity, breaking strength and elongation, and can effectively avoid the damage caused by direct squeezing of the copper core 10 and the connecting steel rope 20, thereby improving the protection of the power cable. Since the material of the filling layer 31 is low-smoke halogen-free glass fiber rope, the glass fiber is an engineering material with the advantages of non-flammability, corrosion resistance, high temperature resistance, low heat absorption, and small deformation coefficient, it can effectively protect the copper core 10 inside the cable. Since the material of the shielding layer 32 is semi-conductive material, the semi-conductive material can evenly distribute the electric field on the outer surface of the core, avoid local discharge of the conductor and insulation caused by the rough surface of the conductor and the air gap caused by the twisting of the core, and avoid the problem of local discharge between the conductor and the metal sheath due to defects such as cracks on the insulation surface of the wire and cable, thereby improving the power. The cable has a shielding effect on the electric field. Since epoxy resin is sprayed on the weather-resistant layer 33, the epoxy resin has good bonding strength and chemical resistance, and can effectively improve the weather resistance of the cable in different environments. Since the protective layer 34 is made of galvanized low-carbon steel wire material, during the use of the cable, the galvanized low-carbon steel wire material enhances the anti-deformation effect of the power cable and improves the rigidity of the power cable. Since the anti-corrosion layer 36 is made of fluororubber, fluororubber has a high chemical stability and can effectively prevent corrosive gases in the air from corroding the cable. Wear-resistant balls are arranged outside the wear-resistant layer 41. Chromium carbide is a high-melting-point material with good wear resistance, corrosion resistance, and oxidation resistance in a high-temperature environment. The wear-resistant layer 41 and the wear-resistant balls use it as the main material to avoid the problem of damage to the power cable due to wear, thereby improving the service life of the power cable.

[0042] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. Weather-resistant and wear-resistant power cable, characterized by: The invention comprises a copper core (10), an outer protection component and an inner protection component, wherein the copper core (10) is provided with a plurality of components, an insulating layer (11) is provided on the outer peripheral surface of the copper core (10), the outer protection component comprises a wear-resistant layer (41) and a wear-resistant block (42), the inner protection component is provided on the outer side of the copper core (10) and wraps the copper core (10), the wear-resistant layer (41) is provided on the outer side of the inner protection component and wraps the inner protection component, and the wear-resistant block (42) is provided on the wear-resistant layer (41).

2. The weather-resistant and wear-resistant power cable according to claim 1, characterized in that: A connection channel is formed between the multiple copper cores (10), a connection steel rope (20) is passed through the connection channel, and the outer peripheral surface of the connection steel rope (20) abuts against the outer peripheral surface of the insulation layer (11).

3. The weather-resistant and wear-resistant power cable according to claim 2, characterized in that: A buffer layer (21) is provided on the outer peripheral surface of the connecting steel rope (20), and the outer peripheral surface of the buffer layer (21) abuts against the outer peripheral surface of the insulating layer (11).

4. The weather-resistant and wear-resistant power cable according to any one of claims 1 to 3, characterized in that: The inner protection component comprises a filling layer (31) and a weather-resistant layer (33); the filling layer (31) is arranged on the outside of the copper core (10) and wraps the copper core (10); the weather-resistant layer (33) is arranged on the outside of the filling layer (31); and the inner circumference of the weather-resistant layer (33) abuts against the outer circumference of the filling layer (31).

5. The weather-resistant and wear-resistant power cable according to claim 4, characterized in that: The inner protection component also includes a protective layer (34) and an anti-corrosion layer (36); the protective layer (34) is arranged on the outside of the weather-resistant layer (33); the inner peripheral surface of the protective layer (34) abuts against the outer peripheral surface of the weather-resistant layer (33); the anti-corrosion layer (36) is arranged on the outside of the protective layer (34); the inner peripheral surface of the anti-corrosion layer (36) abuts against the outer peripheral surface of the protective layer (34).

6. The weather-resistant and wear-resistant power cable according to claim 5, characterized in that: A reinforcing rib (35) is arranged inside the protective layer (34), and the reinforcing rib (35) is composed of a plurality of steel wires twisted together.

7. The weather-resistant and wear-resistant power cable according to claim 4, characterized in that: A shielding layer (32) is also provided between the filling layer (31) and the weather-resistant layer (33), and the shielding layer (32) is made of a semi-conductive material.

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