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CN-122025253-A - Overhead cable with automatic regulating and controlling device

CN122025253ACN 122025253 ACN122025253 ACN 122025253ACN-122025253-A

Abstract

The invention discloses an overhead cable with an automatic regulating and controlling device, which belongs to the technical field of overhead cables, wherein a cable body is sleeved with an outer sheath capable of being inflated and deflated from inside to outside, the outer side of the inner sheath is sleeved with an end guide cover, the end part of the outer sheath is assembled and communicated with the end guide cover, the outer sheath comprises an outer assembly sleeve, a strip-shaped turnover opening, an inflation and deflation air bag and an elastic inner framework, the end guide cover is integrated with an air pump, an air valve, a sensing controller and an electric heating plate, and a pressure sensor is arranged in the inflation and deflation air bag. According to the invention, the sensing controller is linked with the pressure sensor, so that automatic switching of normal state, wind resistance, deicing and bird-driving modes is realized, wind resistance reduction, mechanical ice breaking and physical bird driving are realized by using expansion and contraction of the charging and discharging air bag, the elastic inner skeleton ensures that the air bag is reset, and the electric heating plate assists in deicing; the cable integrates intelligent regulation and control and multifunctional protection, improves the operation stability under a complex environment, reduces the artificial operation and maintenance cost, and is suitable for various overhead transmission lines.

Inventors

  • ZOU PENGFEI
  • WANG LIANG
  • MAO YIGUO
  • HAN XIAOLE
  • YE BIN

Assignees

  • 远东电缆有限公司
  • 新远东电缆有限公司
  • 远东复合技术有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (10)

  1. 1. The overhead cable with the automatic regulating device comprises a cable body and is characterized in that the cable body is composed of a conductor (1), an insulating layer (2) and an inner sheath (3) from inside to outside, an outer sheath (4) capable of being inflated and deflated is wrapped outside the inner sheath (3), an end guide cover (5) communicated with the outer sheath (4) is fixedly arranged at the connecting position of the end of the cable body outside the inner sheath (3), the outer sheath (4) is formed by wrapping an outer assembly sleeve (41) on the outer layer of the inner sheath (3), a plurality of strip-shaped overturning openings (42) formed in the outer assembly sleeve (41), an inflation and deflation airbag (43) arranged at the positions of the strip-shaped overturning openings (42) and an elastic inner framework (44) arranged inside the inflation and deflation airbag (43).
  2. 2. The aerial cable with the automatic regulating device according to claim 1, wherein the strip-shaped overturning ports (42) are internally provided with built-in guide pipes (6) communicated with the inside of the end guide cover (5).
  3. 3. An overhead cable with automatic regulating device according to claim 1, characterized in that the end deflector (5) comprises an annular deflector shell (51) fixed on the outer side of the inner sheath (3), an annular centrifugal deflector pump (52) installed inside the annular deflector shell (51), an outer circulation air inlet valve (53), an outer circulation air outlet valve (54), an inner circulation air inlet valve (55) and an inner circulation air outlet valve (56) installed on the side wall of the annular deflector shell (51).
  4. 4. The overhead cable with automatic regulating and controlling device according to claim 1, wherein the elastic inner framework (44) comprises arc-shaped elastic supporting frames (441) arranged on the inner walls of the two sides of the strip-shaped overturning port (42), elastic supporting pieces (442) arranged between the arc-shaped elastic supporting frames (441) and the inner walls of the air charging and discharging bags (43), and elastic reset pull ropes (443) arranged between the central inner walls of the air charging and discharging bags (43).
  5. 5. The overhead cable with the automatic regulating device according to claim 4, wherein the arc-shaped elastic support frame (441) is a hollow frame with an opening at the lower end, and two ends of the elastic reset pull rope (443) are respectively connected with the connecting end of the opening at the lower end of the arc-shaped elastic support frame (441).
  6. 6. The overhead cable with the automatic regulating device according to claim 1, wherein a temperature and humidity sensing controller (7) is arranged on the outer side face of the end guide cover (5), and the temperature and humidity sensing controller (7) is electrically connected with the annular centrifugal guide pump (52).
  7. 7. An overhead cable with automatic regulating device according to claim 3, characterized in that the outer opening positions of the outer circulation air inlet valve (53) and the outer circulation air outlet valve (54) are respectively provided with an external dust cover (8).
  8. 8. The overhead cable with automatic regulating and controlling device according to claim 1, wherein the outer jacket (4) is made of TPU and rubber elastic airtight composite material, the tensile strength is more than or equal to 15MPa, and the air tightness is less than or equal to 5X 10 -9 cm 3 /(cm 2 s.atm).
  9. 9. The overhead cable with the automatic regulating device according to claim 3, wherein a plurality of embedded electric heating plates (9) are arranged on the inner arc surface of the annular diversion cover shell (51), and the embedded electric heating plates (9) are electrically connected with the temperature and humidity sensing controller (7).
  10. 10. An overhead cable with an automatic regulating device according to claim 3, wherein the outer circulation air inlet valve (53) and the outer circulation air outlet valve (54) are arranged on one side of the annular diversion housing (51) in a staggered manner at intervals, and the inner circulation air inlet valve (55) and the inner circulation air outlet valve (56) are arranged on the other side of the annular diversion housing (51) in a staggered manner at intervals.

Description

Overhead cable with automatic regulating and controlling device Technical Field The invention relates to the technical field of overhead cables, in particular to an overhead cable with an automatic regulating and controlling device. Background The overhead cable is a key device erected on the ground and a pole tower and used for power transmission, and is widely applied to urban distribution networks, high-voltage power transmission and field power supply lines. The traditional overhead cable is composed of a conductor, an insulating layer, a shielding layer and an outer sheath, is fixed in structure and single in function, runs in an open air environment for a long time, is easily influenced by multiple factors such as weather, biology and external force, and has many potential safety hazards and short technical boards. The existing overhead cable has the defects of circular outline, large windward area, easy generation of large windward resistance in windward weather, severe galloping, whipping and fatigue damage of the line, and broken line and tower falling accidents caused in severe cases. The appearance of the wind power generation device cannot be adjusted adaptively along with the wind speed, the wind disturbance resistance is poor, and the stable operation requirement of a complex meteorological area is difficult to meet; the traditional cable only has the basic function of electric energy transmission, lacks environment sensing and self-adaptive adjusting capability, cannot respond in real time according to the conditions of wind speed, icing, bird damage and the like, is highly dependent on manual inspection and post-emergency repair in operation and maintenance, and has low intelligent degree, high operation and maintenance cost and lag response. In the aspect of deicing, ice coating on the surface of the cable is easy to thicken in winter in low-temperature rainy and snowy days, line load is increased, and broken lines and tower rod inclination are caused. Most of the existing deicing modes are manual knocking, direct current heating or mechanical deicing, and the existing deicing modes have the defects of low efficiency, high energy consumption, dangerous operation and the like, and cannot realize quick, safe and automatic deicing. In the aspect of bird repelling, birds stay on the cable and the towers, and short circuit, flashover and other faults are easy to occur when nesting. The traditional bird repellent device is mostly a passive structure such as reflector, bird repellent thorn, is easily adapted by birds, and bird repellent effect persistence is poor, and can't combine to form the integration protection with the cable body. In conclusion, the existing overhead cable has obvious defects in aspects of wind disturbance resistance, intelligent self-adaption, efficient deicing, long-acting bird expelling and the like, and is difficult to meet the requirements of safe, stable and intelligent operation of a modern power grid. Disclosure of Invention The invention aims to solve the technical problems that the existing overhead cable has obvious defects in wind disturbance resistance, intelligent self-adaption, efficient deicing, long-acting bird expelling and the like, and is difficult to meet the requirements of safe, stable and intelligent operation of a modern power grid. The invention solves the technical problems by adopting the technical scheme that the overhead cable with the automatic regulating and controlling device comprises a cable body and is characterized in that the cable body is composed of a conductor, an insulating layer and an inner sheath from inside to outside, an outer sheath capable of being inflated and deflated is wrapped outside the inner sheath, an end guide cover communicated with the outer sheath is fixedly arranged at the connecting position of the end part of the cable body outside the inner sheath, and the outer sheath is assembled outside the outer layer of the inner sheath, a plurality of strip-shaped overturning ports are formed in the outer assembly, an inflation and deflation airbag is arranged at the position of the strip-shaped overturning ports, and an elastic inner framework is arranged inside the inflation and deflation airbag. The inside of the strip-shaped overturning port is provided with a built-in honeycomb duct which is communicated with the inside of the end air guide sleeve. The end diversion cover comprises an annular diversion cover shell fixed on the outer side surface of the inner sheath, an annular centrifugal diversion pump arranged in the annular diversion cover shell, an outer circulation air inlet valve, an outer circulation air outlet valve, an inner circulation air inlet valve and an inner circulation air outlet valve which are arranged on the side wall of the annular diversion cover shell. The elastic inner framework comprises arc-shaped elastic support frames arranged on the inner walls of two sides of the strip-shaped overturning