Medium-voltage flexible cable for mobile power station

Abstract

The utility model relates to a medium-voltage flexible cable for a mobile power station, which comprises a plurality of conductors twisted together, a first inner shielding layer wrapped outside the conductors, an insulating layer wrapped outside the first inner shielding layer, a second inner shielding layer wrapped outside the insulating layer, and a waterproof layer wrapped outside the second inner shielding layer. A gap between the waterproof layer and the second inner shielding layer is filled with a flame-retardant filler, the waterproof layer is coated with an outer shielding layer, the outer shielding layer is coated with an inner sheath, the inner sheath is coated with a reinforcing layer, the reinforcing layer is coated with a flame-retardant layer, the flame-retardant layer is coated with a steel wire braid layer, and the steel wire braid layer is coated with an anti-corrosion coating. The outer side of the anti-corrosion coating is coated with an outer sheath, a plurality of protrusions with the length equal to the length of the cable are evenly distributed on the circumference of the outer side of the outer sheath, and the outer side of the outer sheath and the outer sides of the protrusions are coated with anti-ultraviolet coatings. The utility model is suitable for outdoor harsh conditions, and has long service life.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a medium-voltage flexible cable for a mobile power station. Background Art

[0002] Mobile power stations are usually used in situations where temporary power supply is required or operations are carried out in remote areas. These power stations generate electricity through diesel, natural gas or other fuels, and cables are needed to transmit the electricity to electrical equipment or the power grid. The medium-voltage flexible cable used in a mobile power station refers to a cable that can withstand medium voltage levels, generally from a few thousand volts to dozens of kilovolts, and has high flexibility. Mobile power stations are often deployed outdoors, so the cable needs to face ultraviolet radiation for a long time, which causes the cable to age easily. And because the cable often needs to be moved and rearranged, it is vulnerable to wear, ultimately resulting in a low service life of the cable. At present, common cables still need to be improved in terms of mechanical strength and ultraviolet resistance. Therefore, it is necessary to study a medium-voltage flexible cable specifically for mobile power stations. Summary of the Invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides a medium-voltage flexible cable for a mobile power station.

[0004] To achieve the above object, the utility model adopts the following technical solutions: A medium-voltage flexible cable for a mobile power station includes a number of conductors stranded together. The outside of the conductor is coated with a first inner shielding layer. The outside of the first inner shielding layer is coated with an insulating layer. The outside of the insulating layer is coated with a second inner shielding layer. The outside of the second inner shielding layer is coated with a waterproof layer. And a flame-retardant filler is filled in the gap between the waterproof layer and the second inner shielding layer. The outside of the waterproof layer is coated with an outer shielding layer. The outside of the outer shielding layer is coated with an inner sheath. The outside of the inner sheath is coated with a strengthening layer. The outside of the strengthening layer is coated with a flame-retardant layer. The outside of the flame-retardant layer is coated with a steel wire braid layer. An anti-corrosion coating is coated on the outside of the steel wire braid layer. The outside of the anti-corrosion coating is coated with an outer sheath. A number of protrusions equal in length to the cable are evenly distributed on the circumference of the outside of the outer sheath. An anti-ultraviolet coating is coated on the outside of the outer sheath and the outside of the protrusions.

[0005] Specifically, the strengthening layer is a mixed braided layer of steel wire and aramid fiber.

[0006] Specifically, the anti-corrosion coating is an anti-corrosion asphalt coating.

[0007] Specifically, the anti-ultraviolet coating is an acrylate coating layer or a polyurethane coating layer.

[0008] Specifically, the outer sheath is a silicone rubber sheath.

[0009] Specifically, the inner sheath is a thermoplastic rubber sheath.

[0010] The beneficial effects of the present utility model are as follows: By providing the first inner shielding layer, the second inner shielding layer, and the outer shielding layer, the cable has good anti-interference ability; by providing the strengthening layer and the steel wire braided layer, the tensile strength and wear resistance of the cable can be improved; by providing the anti-corrosion coating, the corrosion resistance of the cable can be improved; by providing the protrusions and the anti-ultraviolet coating, the anti-ultraviolet performance of the cable can be effectively improved, aging can be delayed, and the protrusions can also enhance the mechanical properties of the cable, such as increasing friction and improving the anti-wear ability; the overall performance of the cable is good, it is suitable for use in harsh outdoor conditions, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] In the figure: 1 - conductor; 2 - first inner shielding layer; 3 - insulating layer; 4 - second inner shielding layer; 5 - waterproof layer; 6 - flame-retardant filler; 7 - outer shielding layer; 8 - inner sheath; 9 - strengthening layer; 10 - flame-retardant layer; 11 - steel wire braided layer; 12 - anti-corrosion coating; 13 - outer sheath; 14 - protrusion; 15 - anti-ultraviolet coating;

[0013] The following will be described in detail with reference to the embodiments of the present utility model with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The present utility model will be further described below with reference to the accompanying drawings and embodiments:

[0015] As Figure 1 shown, a medium-voltage flexible cable for a mobile power station includes a plurality of conductors 1 stranded together. The outside of the conductor 1 is coated with a first inner shielding layer 2, the outside of the first inner shielding layer 2 is coated with an insulating layer 3, the outside of the insulating layer 3 is coated with a second inner shielding layer 4, the outside of the second inner shielding layer 4 is coated with a waterproof layer 5, and the space between the waterproof layer 5 and the second inner shielding layer 4 is filled with a flame-retardant filler 6. The outside of the waterproof layer 5 is coated with an outer shielding layer 7; the first inner shielding layer 2 can reduce the influence of the electromagnetic field around the conductor 1 on the insulating layer 3, thereby improving the signal integrity of the cable. By reducing electromagnetic interference, the quality and efficiency of power transmission can be improved. At the same time, the first shielding layer 2 can reduce the partial discharge phenomenon caused by the uneven electric field between the conductor 1 and the insulating layer 3, and extend the service life of the cable; the second inner shielding layer 4 and the outer shielding layer 7 can further reduce the electromagnetic interference around the cable and improve the anti-interference ability of the cable.

[0016] The outside of the outer shielding layer 7 is coated with an inner sheath 8. The inner sheath 8 is a thermoplastic rubber sheath with good flexibility. The outside of the inner sheath 8 is coated with a strengthening layer 9. The strengthening layer 9 is a mixed braided layer of steel wires and aramid fibers. The mixed braided layer of steel wires and aramid fibers as the strengthening layer 9 can both increase mechanical strength and maintain light weight.

[0017] The outer side of the strengthening layer 9 is coated with a flame retardant layer 10, and the outer side of the flame retardant layer 10 is coated with a steel wire braided layer 11. The steel wire braided layer 11 can improve the tensile strength and wear resistance of the cable; an anti-corrosion coating 12 is coated on the outer side of the steel wire braided layer 11. The anti-corrosion coating 12 is an anti-corrosion asphalt coating, which can improve the corrosion resistance of the cable.

[0018] An outer sheath 13 is coated on the outer side of the anti-corrosion coating 12. The outer sheath 13 is a silicone rubber sheath. Silicone rubber has excellent weather resistance and ultraviolet resistance. A plurality of protrusions 14 equal in length to the cable are evenly distributed on the outer circumference of the outer sheath 13. An anti-ultraviolet coating 15 is coated on the outer side of the outer sheath 13 and the outer side of the protrusions 14; by arranging the protrusions 14 on the surface of the cable outer sheath 13, the angle of ultraviolet irradiation can be changed, and the surface area directly irradiated by ultraviolet rays can be reduced. This shielding effect can reduce the aging effect of ultraviolet rays on the cable material; the protrusions 14 can cause light to scatter on the surface, thereby reducing the concentrated irradiation of ultraviolet rays and reducing the damage to the cable outer sheath 13; the protrusions 14 can also enhance the mechanical properties of the cable, such as increasing friction and improving the abrasion resistance.

[0019] The anti-ultraviolet coating 15 is an acrylate coating layer or a polyurethane coating layer. Acrylate coating is a common anti-ultraviolet coating with good weather resistance and color retention. Polyurethane coating has excellent wear resistance and chemical resistance, and also has good anti-ultraviolet performance.

[0020] By arranging the first inner shielding layer 2, the second inner shielding layer 4, and the outer shielding layer 7 in the present utility model, the anti-interference ability of the cable is good; by arranging the strengthening layer 9 and the steel wire braided layer 11, the tensile strength and wear resistance of the cable can be improved. By arranging the anti-corrosion coating 12, the corrosion resistance of the cable can be improved; by arranging the protrusions 14 and the anti-ultraviolet coating 15, the anti-ultraviolet performance of the cable can be effectively improved, aging can be delayed, and the protrusions 14 can also enhance the mechanical properties of the cable, such as increasing friction and improving the abrasion resistance; the overall performance of the cable is good, it is suitable for use in harsh outdoor conditions, and has a long service life.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0023] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] The present utility model has been described exemplarily above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above-mentioned manner. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A medium-voltage flexible cable for a mobile power station, comprising a plurality of conductors (1) stranded together, characterized in that, The outside of the conductor (1) is coated with a first inner shielding layer (2), the outside of the first inner shielding layer (2) is coated with an insulating layer (3), the outside of the insulating layer (3) is coated with a second inner shielding layer (4), the outside of the second inner shielding layer (4) is coated with a waterproof layer (5), and the gap between the waterproof layer (5) and the second inner shielding layer (4) is filled with a flame-retardant filler (6). The outside of the waterproof layer (5) is coated with an outer shielding layer (7), the outside of the outer shielding layer (7) is coated with an inner sheath (8), the outside of the inner sheath (8) is coated with a strengthening layer (9), the outside of the strengthening layer (9) is coated with a flame-retardant layer (10), the outside of the flame-retardant layer (10) is coated with a steel wire braided layer (11), the outside of the steel wire braided layer (11) is coated with an anti-corrosion coating (12), the outside of the anti-corrosion coating (12) is coated with an outer sheath (13), a plurality of protrusions (14) having the same length as the cable are evenly distributed in the circumferential direction on the outside of the outer sheath (13), and an anti-ultraviolet coating (15) is coated on the outside of the outer sheath (13) and the outside of the protrusions (14).

2. The medium-voltage flexible cable for a mobile power station according to claim 1, wherein, The strengthening layer (9) is a mixed braided layer of steel wires and aramid fibers.

3. The medium-voltage flexible cable for a mobile power station according to claim 1, characterized in that, The anti-corrosion coating (12) is an anti-corrosion asphalt coating.

4. The medium-voltage flexible cable for a mobile power station according to claim 1, characterized in that, The anti-ultraviolet coating (15) is an acrylate coating layer or a polyurethane coating layer.

5. A medium-voltage flexible cable for a mobile power station according to claim 1, characterized in that, The outer sheath (13) is a silicone rubber sheath.

6. The medium voltage flexible cable for a mobile power station according to claim 1, characterized in that, The inner sheath (8) is a thermoplastic rubber sheath.

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