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CN-224217692-U - Radio frequency coaxial cable with temperature control function

CN224217692UCN 224217692 UCN224217692 UCN 224217692UCN-224217692-U

Abstract

The utility model relates to a radio frequency coaxial cable with a temperature control function. The temperature control device comprises an inner conductor, a medium pipeline, an insulating layer, a shielding layer, a buffer layer, a sheath layer and a temperature measuring optical fiber, wherein the inner conductor is of a spiral metal tubular structure, the medium pipeline is nested in the inner conductor, a cavity loop for circulating temperature control medium is formed between the medium pipeline and the inner conductor, the insulating layer is arranged on the outer side of the inner conductor, the shielding layer is arranged on the outer side of the insulating layer, the buffer layer is arranged on the outer side of the shielding layer, the sheath layer is arranged on the outer side of the buffer layer, the temperature measuring optical fiber is arranged between the buffer layer and the sheath layer, the temperature measuring optical fiber is connected with an external temperature control system and used for acquiring temperature signals of a radio frequency coaxial cable in real time, and the external temperature control system is used for controlling the circulation of the temperature control medium according to the temperature signals. The utility model solves the problems of signal attenuation and unstable performance in high and low temperature environments, and is suitable for high-frequency signal transmission scenes in high and low temperature environments or sensitive to temperature change.

Inventors

  • WU FULIANG
  • GU DONGMING
  • JIANG QI

Assignees

  • 江苏俊知技术有限公司

Dates

Publication Date
20260508
Application Date
20250424

Claims (10)

  1. 1. A radio frequency coaxial cable with temperature control function, comprising: An inner conductor (2), the inner conductor (2) being of a helical metal tubular structure; A medium pipeline (1) is nested inside the inner conductor (2), and a cavity loop (9) for circulating a temperature control medium is formed between the medium pipeline (1) and the inner conductor (2); An insulating layer (3) provided outside the inner conductor (2); a shielding layer (4) arranged outside the insulating layer (3); a buffer layer (5) arranged outside the shielding layer (4); The sheath layer (7) is arranged outside the buffer layer (5); the temperature measuring optical fiber (6) is arranged between the buffer layer (5) and the sheath layer (7), the temperature measuring optical fiber (6) is connected with an external temperature control system and is used for acquiring temperature signals of the radio frequency coaxial cable in real time, and the external temperature control system is used for controlling circulation of the temperature control medium according to the temperature signals.
  2. 2. The radio frequency coaxial cable with the temperature control function according to claim 1, wherein the medium pipeline (1) is made of a nonmetallic material.
  3. 3. The radio frequency coaxial cable with the temperature control function according to claim 1, wherein the medium pipeline (1) adopts a polytetrafluoroethylene tube or a glass fiber tube.
  4. 4. The radio frequency coaxial cable with the temperature control function according to claim 1, wherein the insulating layer (3) adopts a structure of crosslinked foaming polyethylene extrusion molding or polytetrafluoroethylene microporous tape wrapping molding.
  5. 5. The radio frequency coaxial cable with the temperature control function according to claim 1, wherein the shielding layer (4) adopts a metal braiding, longitudinally wrapping welding embossing or metal wrapping structure.
  6. 6. The radio frequency coaxial cable with the temperature control function according to claim 1, wherein the buffer layer (5) adopts a non-woven fabric wrapping structure.
  7. 7. The radio frequency coaxial cable with the temperature control function according to claim 1, wherein the sheath layer (7) is made of a low-smoke halogen-free flame retardant material or a high-temperature resistant flame retardant material.
  8. 8. The radio frequency coaxial cable with the temperature control function according to claim 1, wherein the temperature measuring optical fiber (6) is laid between the buffer layer (5) and the sheath layer (7) along the axial direction of the cable and is fixed by an optical fiber clamp.
  9. 9. The radio frequency coaxial cable with the temperature control function according to claim 1, wherein the cavity loop (9) comprises a first loop (91) and a second loop (92) which are communicated with each other, the first loop (91) is formed between the outer wall of the medium pipeline (1) and the inner wall of the inner conductor (2), and the second loop (92) is formed inside the medium pipeline (1).
  10. 10. The radio frequency coaxial cable with temperature control function according to claim 9, wherein the external temperature control system comprises a wavelength demodulator (81), a controller (82), a medium storage tank (83), a transfer pump (84), and a heat exchanger (85); The wavelength demodulator (81) is connected with the temperature measuring optical fiber (6) and is used for collecting temperature signals output by the temperature measuring optical fiber (6); The medium storage tank (83) is communicated with the first loop (91) through the delivery pump (84), the second loop (92) is communicated with the medium storage tank (83) through the heat exchanger (85), and the controller (82) is electrically connected with the wavelength demodulator (81) and the delivery pump (84) respectively.

Description

Radio frequency coaxial cable with temperature control function Technical Field The utility model relates to the technical field of radio frequency coaxial cables, in particular to a radio frequency coaxial cable with a temperature control function. Background The radio frequency coaxial cable has wide application in the fields of high-frequency signal transmission such as communication, radar, electronic equipment and the like. The conventional radio frequency coaxial cable is generally composed of an inner conductor, an insulating layer, a shielding layer, an outer sheath and other structures, and is mainly adapted to extreme high-temperature and low-temperature environments by means of the temperature resistance of the material, such as aviation, industrial kilns, communication base stations and other scenes. However, the radio frequency coaxial cable is easily affected by temperature in the working process, for example, the dielectric constant of an insulating material is changed when the temperature is increased, so that signal attenuation is aggravated, the conductor resistance is increased along with the temperature, the signal transmission stability is affected, the conductor attenuation is increased, and the cable structure is possibly deformed due to extreme temperature fluctuation, so that the shielding performance is reduced and the service life is prolonged. Therefore, how to effectively improve the transmission stability of the radio frequency coaxial cable and reduce the signal loss in a high-low temperature or temperature sensitive environment becomes a technical problem to be solved. Disclosure of Invention Therefore, the radio frequency coaxial cable with the temperature control function can realize constant temperature control through temperature control medium circulation and real-time temperature monitoring, solves the problems of signal attenuation and unstable performance in high and low temperature environments, and is suitable for high and low temperature environments or high frequency signal transmission scenes sensitive to temperature change. In order to solve the above technical problems, the present utility model provides a radio frequency coaxial cable with a temperature control function, including: an inner conductor which is of a spiral metal tubular structure; The medium pipeline is nested in the inner conductor, and a cavity loop for circulating and circulating temperature control medium is formed between the medium pipeline and the inner conductor; an insulating layer disposed outside the inner conductor; the shielding layer is arranged outside the insulating layer; the buffer layer is arranged outside the shielding layer; the sheath layer is arranged outside the buffer layer; The temperature measuring optical fiber is arranged between the buffer layer and the sheath layer, is connected with an external temperature control system and is used for acquiring temperature signals of the radio frequency coaxial cable in real time, and the external temperature control system is used for controlling circulation of the temperature control medium according to the temperature signals. In one embodiment of the present utility model, the medium pipe is made of a non-metal material. In one embodiment of the utility model, the medium line is a polytetrafluoroethylene tube or a glass fiber tube. In one embodiment of the utility model, the insulating layer is formed by extrusion molding of crosslinked foaming polyethylene or wrapping of polytetrafluoroethylene microporous tape. In one embodiment of the present utility model, the shielding layer is made of metal braid, longitudinal wrapping, welding embossing or metal wrapping. In one embodiment of the present utility model, the buffer layer adopts a nonwoven fabric wrapping structure. In one embodiment of the utility model, the sheath layer is made of a low-smoke halogen-free flame retardant material or a high-temperature resistant flame retardant material. In one embodiment of the present utility model, the temperature measuring optical fiber is laid between the buffer layer and the sheath layer along the axial direction of the cable, and is fixed by an optical fiber clamp. In one embodiment of the present utility model, the cavity circuit includes a first circuit and a second circuit that are in communication with each other, the first circuit being formed between the medium circuit outer wall and the inner conductor inner wall, the second circuit being formed inside the medium circuit. In one embodiment of the utility model, the external temperature control system comprises a wavelength demodulator, a controller, a medium storage tank, a delivery pump and a heat exchanger; The wavelength demodulator is connected with the temperature measuring optical fiber and is used for collecting temperature signals output by the temperature measuring optical fiber; The medium storage tank is communicated with the first loop through the delivery pump