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CN-122026250-A - Power cable wiring method

CN122026250ACN 122026250 ACN122026250 ACN 122026250ACN-122026250-A

Abstract

The invention relates to the technical field of particle accelerator electromechanical installation, in particular to a power cable wiring method which comprises the steps of parameter investment, determination of maximum current effective value carried by each equipment according to an operating mode of accelerator electromagnet operation, cable model selection, cable arrangement, calculation of heating power of a single cable based on the selected cable, selection of a proper bridge frame in combination with an actual field installation space, determination of a wiring sequence of the cable in the bridge frame, calculation simulation, establishment of a thermal simulation model according to the wiring sequence, thermal simulation calculation to verify feasibility of the wiring sequence in terms of thermal management, engineering implementation, and implementation of cable wiring engineering according to the verified feasible wiring sequence and simulation results thereof. The scheme is used for realizing arrangement of the heavy-current direct-current power cable in a limited installation space and guaranteeing stable operation of the accelerator electromagnet system.

Inventors

  • ZHANG YONGBO
  • FENG ANHUI
  • Zhang Runzu
  • LIU YE
  • YANG JIANCHENG
  • RUAN SHUANG
  • LIU PENGFEI

Assignees

  • 中国科学院近代物理研究所

Dates

Publication Date
20260512
Application Date
20251223

Claims (10)

  1. 1. A power cable routing method, comprising: The parameter is funded, and the maximum current effective value carried by each device is determined according to the operation mode of the accelerator electromagnet; selecting a cable type, and selecting a cable (5) capable of safely carrying the current according to the maximum current effective value; The cable arrangement is carried out, heating power of a single cable (5) is calculated based on the selected cable (5), and a proper bridge frame is selected in combination with the actual field installation space to determine the wiring sequence of the cable (5) in the bridge frame; Calculating simulation, namely establishing a thermal simulation model according to the wiring sequence, and performing thermal simulation calculation to verify the feasibility of the wiring sequence in terms of thermal management; and engineering implementation, namely implementing cable wiring engineering according to the verified and feasible wiring sequence and simulation results thereof.
  2. 2. The power cable routing method according to claim 1, wherein in the cable routing step: Arranging cables (5) with larger current carrying density per unit sectional area on the top or both sides of the bridge; cables (5) with a low current-carrying density per cross-section area are arranged in the middle or bottom region of the bridge.
  3. 3. The power cable routing method according to claim 2, characterized in that the cable (5) is arranged with upper and lower layer errors; Through dislocation formula multilayer laying, promote whole radiating efficiency under the intensive cabling condition.
  4. 4. The power cable routing method according to claim 1, wherein in the calculation simulation step: if the simulation verification result shows that the operation is feasible, entering an engineering implementation step; If the simulation verification result shows that the method is not feasible, the model number or the wiring sequence of the cable (5) is adjusted, and the simulation verification is carried out again until the thermal management requirement is met.
  5. 5. The method of claim 4, wherein, When simulation verification is not feasible, preferentially returning to the cable arrangement step, and adjusting the wiring sequence of the cable (5); if the re-verification is not feasible, the method further returns to the cable (5) model selection step, the cable (5) model is replaced, and the wiring sequence is re-adjusted based on the new model selection result and then re-verification is performed.
  6. 6. The power cable routing method of claim 1, wherein in the engineering implementation step: a hollow bridge (3) is selected; and fixing the cables (5) at intervals according to the wiring sequence by adopting a wire fixing device.
  7. 7. The power cable routing method according to claim 6, characterized in that the sides of the hollowed bridge (3) are free of baffles; the bottom of the hollowed bridge frame (3) leaves a heat dissipation space away from the ground, and the side edges are structurally supported through sectional materials.
  8. 8. The power cable routing method according to claim 6, characterized in that a hollowed-out pedal is arranged at the top of the routing area of the hollowed-out bridge (3) as a cover plate, and the hollowed-out pedal is simultaneously used as a pedestrian maintenance channel.
  9. 9. The power cable routing method according to claim 8, wherein metal lap joint is realized between the hollow bridge (3) and the hollow pedal, and grounding is performed at intervals of a set distance along the length direction of the hollow bridge (3).
  10. 10. The power cable routing method according to any one of claims 1 to 9, further comprising an actual measurement step including: after the cable wiring engineering is completed, all relevant equipment is operated to rated power, and the actual temperature rise of the wiring system is measured to perform security verification.

Description

Power cable wiring method Technical Field The invention relates to the technical field of electromechanical installation of particle accelerators, in particular to a power cable wiring method. Background The traditional heavy ion accelerator system has a huge structure, and in view of safety considerations such as radiation protection, independent and special large-scale building facilities are usually required to be built in a matched mode, so that the overall construction cost is high, and the popularization and promotion of the heavy ion accelerator system in clinical medical and other scenes are seriously restricted. In order to cope with the above challenges, heavy ion accelerators have recently been rapidly developed toward high-energy, miniaturized applications in the medical application direction. The miniaturization of the device helps to reduce capital costs and space occupation, but at the same time brings about a problem of a steep rise in power density. The heavy ion accelerator mainly comprises core components such as an electromagnet, a vacuum pipeline, a high-frequency cavity, detection equipment and the like, wherein the power density increase caused by high energy and miniaturization is mainly concentrated on an electromagnet system. In order to effectively restrict the high-energy heavy ion beam, the electromagnet needs to generate a stronger magnetic field, which requires that the working current of the electromagnet is obviously increased, and meanwhile, in partial application scenes, the electromagnet also needs to support a fast pulse and high-frequency operation mode, thereby further exacerbating the requirements on a power supply system. In this context, a large number of dc power cables for transmitting large currents are arranged around the accelerator beam line. How to efficiently and safely arrange the cables in a limited space, effectively control the heating effect of the cables, and avoid insulation aging, performance degradation and even system faults caused by over-high temperature rise, thus becoming a key technical problem for ensuring the long-term, stable and reliable operation of the heavy ion accelerator. Disclosure of Invention The invention provides a power cable wiring method, which is used for solving the defects that in a heavy ion accelerator device with high power density and limited space, the power cable is unreasonably arranged to cause poor heat dissipation and over-high temperature rise so as to influence the long-term stable operation of a system, realizing the safe, efficient and reliable arrangement of a high-current direct-current power cable in a limited installation space, effectively controlling the thermal effect of the high-current direct-current power cable and ensuring the stable operation of an accelerator electromagnet system in the prior art. The invention provides a power cable wiring method which comprises the steps of parameter investment, cable type selection, cable arrangement, calculation of heating power of a single cable based on the selected cable, selection of a proper bridge frame in combination with an actual field installation space, determination of a wiring sequence of the cable in the bridge frame, calculation simulation, establishment of a thermal simulation model according to the wiring sequence, thermal simulation calculation to verify the feasibility of the wiring sequence in terms of thermal management, engineering implementation, and implementation of cable wiring engineering according to the verified feasible wiring sequence and simulation results thereof. According to one embodiment of the invention, in the cable arrangement step, cables with larger current carrying density per unit sectional area are arranged on the top or two sides of the bridge frame, and cables with smaller current carrying density per unit sectional area are arranged in the middle area or the bottom layer of the bridge frame. According to the invention, the cable adopts an upper-lower layer dislocation arrangement mode, and the overall heat dissipation efficiency is improved under the condition of densely laying the cable by dislocation type multilayer laying. According to one embodiment of the invention, in the calculation simulation step, if the simulation verification result shows that the method is feasible, the method enters an engineering implementation step, and if the simulation verification result shows that the method is not feasible, the cable model or the wiring sequence is adjusted, and the simulation verification is carried out again until the thermal management requirement is met. According to one embodiment of the invention, when simulation verification is not feasible, the method preferably returns to the cable arrangement step to adjust the wiring sequence of the cable, and if the verification is not feasible again, the method further returns to the cable model selection step to replace the cable model, and the wiring sequence is