CN213844871U - High-temperature-resistant radio frequency cable - Google Patents

Abstract

The utility model discloses a high temperature resistant radio frequency cable, concretely relates to radio frequency cable field, include outer jacket, interior sheath, weaving layer and around the covering, the outside of sheath including the outer jacket parcel, interior sheath parcel is in the outside of weaving the layer, the weaving layer direct winding is in the outside around the covering, be equipped with copper shield metal pipe around the inside of covering, copper shield metal pipe and the space intussuseption between the covering are filled with dampproofing the filler, the inside align to grid of dampproofing filler has a plurality of magnesium oxide knob stems. The utility model discloses utilize high temperature cable the size of cable cross-section and conductor cross-section that has significantly reduced, alleviateed the weight of cable to reduce the use cost of cable, the fastness is strong, and fish tail resistance, ageing-resistant has promoted the tensile performance of dragging and holistic structural strength of cable.

Description

High-temperature-resistant radio frequency cable

Technical Field

The utility model relates to a radio frequency cable field, more specifically says, the utility model relates to a high temperature resistant radio frequency cable.

Background

Radio frequency cables, also known as coaxial cables, are composed of an inner conductor, an outer conductor, and a medium supporting the inner and outer conductors, which are coaxial with each other. In radio frequency transmission of radio communication and broadcast television, radio frequency cables are important equipment. If the selection is improper, not only waste is caused, the investment cost is increased, but also the system is unstable in operation, faults are caused, and equipment is damaged. In order to properly select a radio frequency cable, it is necessary to learn some characteristic parameters and types of the cable. The characteristics of the radio frequency cable include electrical properties and mechanical properties, the electrical properties include characteristic impedance, transmission loss and frequency characteristics thereof, temperature characteristics, shielding characteristics, rated power, maximum withstand voltage mechanical properties including minimum bending radius, weight per unit length, allowable maximum tensile force, and aging characteristics and consistency of the cable.

The conventional radio frequency cable has the advantages that the insulating and sheathing materials are all polyvinyl chloride, the use in high-temperature environments is not met, the firmness is not strong, and the traditional cable sheathing material has the defects of high temperature difference resistance, scratch resistance, aging resistance and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a high temperature resistant radio frequency cable, includes outer jacket, interior sheath, weaving layer and around the covering, the outside of sheath including the outer jacket parcel, interior sheath parcel is in the outside of weaving the layer, the weaving layer direct winding is in the outside around the covering, be equipped with copper shield metal tube around the inside of covering, copper shield metal tube and the space intussuseption between the covering are filled with dampproofing filler, the inside align to grid of dampproofing filler has a plurality of magnesium oxide knob stems.

In a preferred embodiment, the copper-shielding metal tube is internally provided with a conductor, and the exterior of the conductor is wrapped with an inorganic insulating layer.

In a preferred embodiment, the inorganic insulating layer is located inside the copper-shielded metal tube, and the heat conductive filler is filled between the inorganic insulating layer and the copper-shielded metal tube.

In a preferred embodiment, a plurality of copper conducting rods are inserted into the heat conducting filler, and the two ends of each copper conducting rod are respectively connected with the inorganic insulating layer and the copper shielding metal pipe.

In a preferred embodiment, the woven layer is formed, welded and woven by copper strips, the inner protective layer is made of glass fibers and a red copper metal mesh, the red copper metal mesh is wrapped outside the glass fibers, the glass fibers are attached to the outer protective layer, and the red copper metal mesh is attached to the woven layer.

In a preferred embodiment, the radial length of the magnesia porcelain column is 0.5-0.8cm, and the moisture-proof filler is prepared by mixing diatomite and bamboo charcoal powder.

The utility model discloses a technological effect and advantage:

1. through having adopted inorganic insulating layer to cooperate the magnesium oxide knob insulator, can promote the holistic high temperature resistance of cable by a wide margin, make whole cable part keep at a higher temperature and can not influence its normal use, because the operating temperature of cable is higher, the current-carrying capacity that the cable of same cross-section passes through is big more, conductor portion high temperature can promote its current-carrying capacity, utilize the size of high temperature cable cross-section and conductor cross-section that has significantly reduced, the weight of cable has been alleviateed, thereby the use cost of cable has been reduced.

2. The multi-layer structural design is adopted, the copper strip woven braid and the double-layer inner sheath have good protection effect, the firmness is strong, the scratch resistance and the aging resistance are realized, and the tensile pulling resistance and the overall structural strength of the cable are improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

The reference signs are: 1 outer jacket, 2 inner jackets, 3 weaving layers, 4 around covering, 5 copper shielding metal pipes, 6 dampproofing fillers, 7 magnesium oxide knob insulator, 8 conductors, 9 inorganic insulating layers, 10 heat-conduction fillers, 11 copper conduction poles.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

As shown in fig. 1, a high temperature resistant radio frequency cable comprises an outer protective layer 1, an inner protective layer 2, a braided layer 3 and a wrapping layer 4, wherein the outer protective layer 1 is wrapped outside the inner protective layer 2, the inner protective layer 2 is wrapped outside the braided layer 3, the braided layer 3 is directly wrapped outside the wrapping layer 4, a copper shielding metal tube 5 is arranged inside the wrapping layer 4, a space between the copper shielding metal tube 5 and the wrapping layer 4 is filled with a moisture-proof filler 6, a plurality of magnesium oxide knob insulators 7 are uniformly arranged inside the moisture-proof filler 6, during use, a plurality of magnesium oxide knob insulators 7 positioned inside the copper shielding metal tube 5 can greatly improve the heat resistance of the cable, and meanwhile, due to the poor moisture-proof capability of the magnesium oxide knob insulators 7, the moisture-proof filler 6 is filled in the space between the magnesium oxide knob insulators 7 and the copper shielding metal tube 5 and the wrapping layer 4, the working environment of the magnesia porcelain column 7 is improved, and the instability of heat resistance caused by the damp of the magnesia porcelain column is avoided;

a conductor 8 is arranged in the copper shielding metal pipe 5, an inorganic insulating layer 9 is wrapped outside the conductor 8, the inorganic insulating layer 9 protects and insulates the conductor 8, and meanwhile, the inorganic insulating layer 9 can tolerate high temperature and can improve the overall high-temperature resistance of the cable;

the inorganic insulating layer 9 is positioned inside the copper shielding metal tube 5, the heat conduction filler 10 is filled between the inorganic insulating layer 9 and the copper shielding metal tube 5, the plurality of copper conduction rods 11 which are uniformly arranged are inserted in the heat conduction filler 10, two ends of each copper conduction rod 11 are respectively connected with the inorganic insulating layer 9 and the copper shielding metal tube 5, as the inorganic insulating layer 9 and the heat conduction filler 10 are adopted and filled, the copper conduction rods 11 are utilized for heat conduction, and the magnesium oxide porcelain columns 7 are arranged outside, the whole cable part can be kept at a higher temperature without influencing the normal use of the cable, because the working temperature of the cable is higher, the current-carrying capacity of the cable with the same section is larger, the current-carrying capacity of the conductor 8 part can be improved due to the high temperature of the cable, the sizes of the cable section and the conductor 8 section are greatly reduced by utilizing the high temperature cable, and the weight of the cable is reduced, thereby reducing the use cost of the cable;

the braided layer 3 is formed by forming, welding and braiding a copper strip, the inner protection layer 2 is made of glass fibers and a red copper metal net, the red copper metal net is wrapped outside the glass fibers, the glass fibers are attached to the outer protection layer 1, and the red copper metal net is attached to the braided layer 3;

the radial length of the magnesium oxide knob insulator 7 is 0.5-0.8cm, and the moisture-proof filler 6 is prepared by mixing diatomite and bamboo charcoal powder, so that the moisture resistance of the magnesium oxide knob insulator 7 can be improved, and the service life of the cable can be prolonged.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present disclosure. The structures, devices, and methods of operation of the present invention, not specifically described and illustrated, are generally practiced by those of ordinary skill in the art without specific recitation or limitation.

Claims (5)

1. The utility model provides a high temperature resistant radio frequency cable, includes outer jacket, interior sheath, weaving layer and around the covering, the outside of sheath including the outer jacket parcel, interior sheath parcel is in the outside of weaving the layer, the direct winding of weaving layer is in the outside around the covering, its characterized in that: the copper-clad aluminum-clad laminate is characterized in that a copper shielding metal tube is arranged inside the cladding, moisture-proof filler is filled in a space between the copper shielding metal tube and the cladding, and a plurality of magnesium oxide porcelains are uniformly arranged inside the moisture-proof filler.

2. A high temperature resistant radio frequency cable according to claim 1, wherein: the copper shielding metal tube is internally provided with a conductor, and the exterior of the conductor is wrapped with an inorganic insulating layer.

3. A high temperature resistant radio frequency cable according to claim 2, wherein: the inorganic insulating layer is positioned in the copper shielding metal tube, and heat conduction filler is filled between the inorganic insulating layer and the copper shielding metal tube.

4. A high temperature resistant radio frequency cable according to claim 3, wherein: a plurality of copper conducting rods which are uniformly arranged are inserted into the heat conduction filler, and two ends of each copper conducting rod are respectively connected with the inorganic insulating layer and the copper shielding metal pipe.

5. A high temperature resistant radio frequency cable according to claim 1, wherein: the weaving layer is formed by copper strip molding, welding and weaving, the inner protection layer is made of glass fiber and red copper metal mesh, the red copper metal mesh wraps the outside of the glass fiber, the glass fiber is attached to the outer protection layer, and the red copper metal mesh is attached to the weaving layer.

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