Crosslinked polyethylene insulated corrugated sleeve low-smoke halogen-free flame-retardant environment-friendly power cable with rated voltage of 110kV and production equipment
By adopting a trapezoidal conductor structure and multi-layer composite insulation design in high-voltage cables, combined with intelligent production equipment, the problems of insufficient insulation performance and low production equipment efficiency in traditional high-voltage cables have been solved, achieving efficient and environmentally friendly cable manufacturing and stable cable quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional high-voltage cables suffer from problems during long-term operation, such as insufficient corona resistance of insulation materials, simple water-blocking structure that easily leads to water treeing and aging, poor flexibility of metal sheath causing laying difficulties, and release of toxic gases when the sheath burns. In addition, the production equipment relies on manual intervention, resulting in low winding efficiency, poor wire laying accuracy, and unstable tension control, which affects the consistency of cable quality.
The conductor uses a trapezoidal conductor structure, combined with components such as semi-conductive resistive water-coated tape, cross-linked polyethylene insulation layer, and aluminum tube sheath, to form a multi-layer composite structure, which enhances conductivity and tensile strength. The production equipment adopts intelligent equipment, which achieves efficient winding and precise wire laying through motor drive, ball nuts and damping devices.
It significantly improves the conductivity and tensile strength of cables, inhibits moisture penetration, reduces the risk of partial discharge in the insulation layer, enhances flexibility and environmental friendliness, ensures consistent cable quality and ease of construction, and improves the stability and efficiency of production equipment.
Smart Images
Figure CN224096426U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cable technical field, concretely is a kind of rated voltage 110kV cross-linked polyethylene insulation corrugated jacket low smoke halogen-free flame-retardant environmental protection type power cable and production equipment. BACKGROUND
[0002] Rated voltage 110kV cross-linked polyethylene insulation corrugated jacket low smoke halogen-free flame-retardant environmental protection type power cable is the high-performance cable product developed for modern high-voltage transmission and distribution system, and its core structure includes cross-linked polyethylene (XLPE) insulation layer, semi-conductive water-blocking shield layer, corrugated aluminum sheath and environmental protection type sheath and other components, and the supporting production equipment covers cable stranding, insulation extrusion, shielding wrapping, sheath forming and intelligent winding and other process modules.
[0003] Traditional high-voltage cables generally have problems such as insufficient corona resistance of insulation material, single water-blocking structure leading to water tree aging, poor flexibility of metal sheath leading to difficult laying, release of toxic gases during sheath combustion, and the like during long-term operation. At the same time, the traditional production equipment relies on manual intervention, and has defects such as low winding efficiency, poor wire arrangement accuracy, unstable tension control, etc., which makes it difficult to guarantee the consistency of cable quality. The new type of cable optimizes the material formula and structural design, and combines with intelligent production equipment, to systematically solve the above problems and provide technical support for the reliability and environmental protection of high-voltage power grid. UTILITY MODEL CONTENT
[0004] The technical problem solved by the utility model is to provide a rated voltage 110kV cross-linked polyethylene insulation corrugated jacket low smoke halogen-free flame-retardant environmental protection type power cable and production equipment to solve the problem of insufficient corona resistance of insulation material of traditional high-voltage cables during long-term operation.
[0005] The technical scheme is as follows: a rated voltage 110kV cross-linked polyethylene insulation corrugated sleeve low-smoke halogen-free flame-retardant environment-friendly power cable, which comprises a wire, the wire structure is a trapezoidal wire conductor structure, the outer layer of the wire is provided with a semi-conductive water-resistant tape, the semi-conductive water-resistant tape has a thickness of 0.3mm, a width of 25mm, and a wrapping lap rate of 15%, the outer layer of the semi-conductive water-resistant tape is provided with an inner shielding layer, the inner shielding layer is formed by semi-conductive polyolefin mixture extrusion, the outer layer of the inner shielding layer is provided with an insulation layer, the insulation layer is formed by cross-linked polyethylene material extrusion, the outer layer of the insulation layer is provided with an outer shielding layer, the outer shielding layer is formed by semi-conductive polyolefin mixture extrusion, the average thickness of the outer shielding layer is 1.0mm, the outer layer of the outer shielding layer is provided with a semi-conductive shielding layer, the semi-conductive shielding layer is formed by two layers of semi-conductive buffer water-resistant tape overlapping and wrapping, the outer layer of the semi-conductive shielding layer is provided with an aluminum pipe, the aluminum pipe is formed by longitudinal wrapping and welding, the outer layer of the aluminum pipe is provided with a sheath, and the sheath is made of halogen-free low-smoke high electrical performance insulation grade sheath material.
[0006] A cable production equipment, which comprises a base, two shaft supports are fixedly arranged at the upper end of the base, a cable reel is rotationally arranged between the shaft supports, and a rotating shaft is arranged in the cable reel.
[0007] Preferably, a first motor is fixedly arranged at the right side of the cable reel, and a transmission belt is connected between the first motor and the rotating shaft.
[0008] Preferably, a second motor is fixedly arranged at the left end of the base, and a lead screw is arranged at the output shaft end of the second motor.
[0009] Preferably, the lead screw and the second motor are connected through a shaft coupling, and a ball nut is movably arranged on the lead screw.
[0010] Preferably, a movable block is fixedly arranged at the upper end of the ball nut, and a damping device is fixedly arranged at the upper end of the movable block.
[0011] Preferably, a fixed sleeve is fixedly arranged at the upper end of the damping device, the fixed sleeve is composed of two half-arc shapes, and the fixed sleeve can be fixed through buckling.
[0012] Compared with the prior art, the cable production equipment has the following beneficial effects:
[0013] 1. The rated voltage 110kV cross-linked polyethylene insulation corrugated jacket low-smoke halogen-free flame-retardant environmentally-friendly power cable and production equipment, the wire adopts a trapezoidal wire conductor structure combined with a multi-strand single wire twisting process, significantly improves the conductivity efficiency and tensile strength, and the semi-conductive water-blocking tape is tightly wound to form a uniform water-blocking barrier, effectively inhibits water penetration and longitudinal water tree growth, the inner shielding layer and the outer shielding layer evenly disperse the electric field stress through the semi-conductive material, reduces the risk of partial discharge of the insulation layer, the insulation layer adopts cross-linked polyethylene material and strictly controls the eccentricity, ensures the high voltage resistance and long-term operation stability, the aluminum pipe is designed by longitudinal welding and corrugation to enhance the flexibility, and is suitable for complex laying environment, and the sheath is selected from a halogen-free low-smoke flame-retardant material, and high mechanical strength and environmental safety are considered;
[0014] 2. The rated voltage 110kV cross-linked polyethylene insulation corrugated jacket low-smoke halogen-free flame-retardant environmentally-friendly power cable and production equipment, the base and the shaft frame cooperate to provide stable support, and guarantee the stability of the cable reel during high-speed rotation, the first motor drives the transmission belt to rotate the shaft to realize efficient winding of the cable, the second motor precisely controls the rotation of the lead screw through the shaft coupling, the ball nut and the movable block convert the rotary motion into linear displacement, the damping device absorbs the motion impact force, ensures the uniformity of the wire, the fixed sleeve guides the precise arrangement of the cable, and the buckle quickly locks the cable end, and the whole equipment realizes the intelligent cooperation of the winding speed and the wire arrangement path;
[0015] 3. The rated voltage 110kV cross-linked polyethylene insulation corrugated jacket low-smoke halogen-free flame-retardant environmentally-friendly power cable and production equipment, the semi-conductive shielding layer adopts double-layer water-blocking tape overlapping wrapping, forms a double waterproof barrier through high overlap rate design, greatly improves the longitudinal and radial water-blocking performance, the aluminum pipe corrugated structure combines the high elongation property of the sheath, enhances the bending flexibility and anti-deformation ability of the cable, simplifies the construction difficulty, and the sheath has high light transmittance and A-class flame-retardant properties, ensures low-smoke environmental protection and line safety in fire scene. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a three-dimensional structure schematic view of the rated voltage 110kV cross-linked polyethylene insulation corrugated jacket low-smoke halogen-free flame-retardant environmentally-friendly power cable;
[0017] Figure 2 It is a cable production equipment structure schematic view of the utility model;
[0018] Figure 3 It is a cable fixing device structure schematic view of the utility model;
[0019] Figure 4 It is a cable winding device structure schematic view of the utility model;
[0020] Figure 5 It is a cable fixing device cross-sectional structure schematic view of the utility model.
[0021] Fig. 1, wire; 2, semi-conductive water-blocking tape; 3, inner shielding layer; 4, insulation layer; 5, outer shielding layer; 6, semi-conductive shielding layer; 7, aluminum tube; 8, sheath; 9, base; 10, shaft support; 11, cable reel; 12, rotating shaft; 13, first motor; 14, transmission belt; 15, second motor; 16, screw rod; 17, coupling; 18, ball nut; 19, movable block; 20, damping device; 21, fixed sleeve; 22, buckle. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0023] Please refer to Figures 1-5The utility model provides a technical scheme: a rated voltage 110kV cross linked polyethylene insulation wrinkle cover low smoke halogen -free flame -retardant environmental protection type electric power cable, this rated voltage 110kV cross linked polyethylene insulation wrinkle cover low smoke halogen -free flame -retardant environmental protection type electric power cable includes wire 1, and wire 1 structure is trapezoidal type line conductor structure, and the outer layer of wire 1 has semi -conductive water -resistant tape 2, and semi -conductive water -resistant tape 2, and the thickness is 0.3mm, and the width is 25mm, and the covering rate of around package is 15%, and the outer layer of semi -conductive water -resistant tape 2 has inner shield layer 3, and inner shield layer 3 is formed by semi -conductive polyolefin mixed material extrusion, and the outer layer of inner shield layer 3 has insulation layer 4, and insulation layer 4 is formed by cross linked polyethylene material extrusion, and the outer layer of insulation layer 4 has outer shield layer 5, and outer shield layer 5 is formed by semi -conductive polyolefin mixed material extrusion, and the average thickness of outer shield layer is 1.0mm, and the outer layer of outer shield layer 5 has semi -conductive shield layer 6, and semi -conductive shield layer 6 is formed by two -layer semi -conductive buffer water -resistant tape overlapping around package layer, and the outer layer of semi -conductive shield layer 6 has aluminium pipe 7, and aluminium pipe 7 is longitudinally -welded structure, and the outer layer of aluminium pipe 7 has sheath 8, and sheath 8 adopts halogen -free low smoke high electric performance insulation grade sheath material, and wire 1 adopts trapezoidal type line conductor structure through the twist of multiple single filaments to promote the conductivity and flexibility, and the mechanical strength and current carrying capacity are enhanced, and semi -conductive water -resistant tape 2 forms uniform water -resistant barrier through close winding, and the water penetration and longitudinal water tree growth are inhibited, and inner shield layer 3 utilizes semi -conductive material to uniformly disperse electric field stress, and reduces the partial discharge risk of insulation layer, and insulation layer 4 realizes high voltage resistance based on cross linked polyethylene material, and guarantees electrical insulation stability and long -term operation reliability, and outer shield layer 5 is further optimized through semi -conductive material package electric field distribution, and the breakdown risk caused by charge aggregation is avoided, and semi -conductive shield layer 6 adopts double -layer water -resistant tape overlapping around package to provide double waterproof protection, and the structural sealing property is strengthened, and aluminium pipe 7 enhances the bending flexibility of cable through longitudinal -welded corrugated structure, and adapts to complex laying environment, and sheath 8 selects halogen -free low smoke flame -retardant material, and environmental protection safety and mechanical protection are considered.
[0024] A kind of cable production equipment, the upper end of pedestal 9 is fixedly provided with two shaft supports 10, cable reel 11 is rotatably provided between shaft support 10, the inside of cable reel 11 is provided with rotating shaft 12, the right side of cable reel 11 is fixedly provided with first motor 13, transmission belt 14 is connected between first motor 13 and rotating shaft 12, the left end of pedestal 9 is fixedly provided with second motor 15, the output shaft end of second motor 15 is provided with screw rod 16, pedestal 9 provides stable support for production equipment, ensure overall structural stability, shaft support 10 assists pedestal 9 to bear the operating load of reel, cable reel 11 is sequentially received by rotation, rotating shaft 12 connects reel 11 with drive system transmission rotary power, first motor 13 drives drive system to provide power input for reel 11, transmission belt 14 connects first motor 13 with rotating shaft 12 to realize power transmission, second motor 15 drives screw rod mechanism to complete linear motion control, screw rod 16 is converted into linear displacement by rotary motion, shaft coupling 17 connects second motor 15 with screw rod 16 to ensure efficient power transmission.
[0025] Screw rod 16 and second motor 15 are connected by shaft coupling 17, ball nut 18 is movably provided on screw rod 16, movable block 19 is fixedly provided on the upper end of ball nut 18, damping device 20 is fixedly provided on the upper end of movable block 19, fixed sleeve 21 is fixedly provided on the upper end of damping device 20, fixed sleeve 21 is composed of two half arcs, fixed sleeve 21 can be fixed by buckle 22, ball nut 18 moves along the axial direction of screw rod 16, movable block 19 is linked with ball nut 18 to control the accuracy of wire arrangement path, damping device 20 absorbs motion impact force, guarantees wire arrangement uniformity, fixed sleeve 21 accurately guides cable direction, buckle 22 locks cable end to prevent loosening.
[0026] Working principle: rated voltage 110kV cross-linked polyethylene insulation corrugated jacket low smoke halogen-free flame-retardant environmentally friendly power cable and production equipment through composite structure design and intelligent machinery to achieve high performance manufacturing, wire 1 adopts trapezoidal type line conductor structure by 5 split 454 single wire stranded 2000mm² conductor outer diameter 54.5mm and elongation at break ≥25%, the outer layer winding thickness 0.3mm, width 25mm and the coverage rate 15% of the semi-conductive water resistance tape 2 forms water barrier, the inner shielding layer 3 is formed by 1.5mm thick semi-conductive polyolefin mixture extrusion to form uniform electric field distribution, the core insulation layer 4 adopts cross-linked polyethylene material extrusion molding, the nominal thickness is 16.0mm and the thinnest point is 15.64mm to ensure that the insulation eccentricity is less than 1%, the outer shielding layer 5 is wrapped with 1.0mm thick semi-conductive polyolefin material to enhance the stability of electric field, the semi-conductive shielding layer 6 adopts double layer semi-conductive buffer water resistance tape overlapping wrapping, the overlap rate is 48%-50% and the thickness is 1.5mm to realize double water resistance protection, the aluminum pipe 7 is formed by longitudinal wrapping welding process with 2.3mm thick corrugated structure, the corrugation depth is 6.0mm and the pitch is 30mm to improve the flexibility of the cable, the sheath 8 adopts halogen-free low smoke polyolefin material, the strength is 13.5MPa, the elongation is 450% and the flame retardant A level requirement is met, the production equipment is supported by the base 9 and the shaft support 10, the first motor 13 drives the rotating shaft 12 through the transmission belt 14 to drive the cable reel 11 to rotate and wind the cable, the second motor 15 drives the screw rod 16 through the shaft coupling 17 to transmit power to the ball nut 18, drives the movable block 19 to move linearly along the axial direction, the damping device 20 buffers the impact of movement to guide the cable to be evenly arranged, the buckle 22 fixes the cable end to ensure the winding stability.
[0027] Finally, it should be pointed out that the above content is only used to explain the technical scheme of the present application, and is not a limitation on the protection scope of the present application. Simple modification or equivalent replacement of the technical scheme of the present application by ordinary skilled in the art does not deviate from the essence and scope of the technical scheme of the present application.
Claims
1. A 110kV cross-linked polyethylene insulated corrugated low-smoke halogen-free flame-retardant environmentally friendly power cable, wherein the 110kV cross-linked polyethylene insulated corrugated low-smoke halogen-free flame-retardant environmentally friendly power cable and its production equipment include conductors (1), characterized in that: The conductor (1) has a trapezoidal conductor structure. The outer layer of the conductor (1) has a semi-conductive resistive water-coated tape (2), which is 0.3 mm thick, 25 mm wide, and has an overlap rate of 15%. The outer layer of the semi-conductive resistive water-coated tape (2) has an inner shielding layer (3), which is extruded from a semi-conductive polyolefin mixture. The outer layer of the inner shielding layer (3) has an insulating layer (4), which is extruded from cross-linked polyethylene material. The insulating layer (4) has… The outer layer has an outer shielding layer (5), which is made of a semi-conductive polyolefin mixture extruded and has an average thickness of 1.0 mm. The outer layer of the outer shielding layer (5) has a semi-conductive shielding layer (6), which is made of two layers of semi-conductive buffer water-blocking tape overlapping and wrapping. The outer layer of the semi-conductive shielding layer (6) has an aluminum tube (7), which is made of longitudinal wrapping and welding. The outer layer of the aluminum tube (7) has a sheath (8), which is made of halogen-free, low-smoke, high-electrical-performance insulating sheath material.
2. A cable production equipment, comprising a conductor (1), characterized in that: Two shafts (10) are fixedly installed at the upper end of the base (9), and a cable reel (11) is rotatably installed between the shafts (10). A rotating shaft (12) is installed inside the cable reel (11).
3. The cable production equipment according to claim 2, characterized in that: A first motor (13) is fixedly installed on the right side of the cable reel (11), and a transmission belt (14) is connected between the first motor (13) and the shaft (12).
4. The cable production equipment according to claim 3, characterized in that: A second motor (15) is fixedly installed at the left end of the base (9), and a lead screw (16) is installed at the output shaft end of the second motor (15).
5. The cable production equipment according to claim 4, characterized in that: The lead screw (16) and the second motor (15) are connected by a coupling (17), and a ball nut (18) is movably provided on the lead screw (16).
6. The cable production equipment according to claim 5, characterized in that: The upper end of the ball nut (18) is fixedly provided with a movable block (19), and the upper end of the movable block (19) is fixedly provided with a damping device (20).
7. A cable production equipment according to claim 6, characterized in that: The upper end of the damping device (20) is fixedly provided with a fixing sleeve (21), which is composed of two semi-circular shapes and can be fixed by a buckle (22).