A radio frequency coaxial cable

Abstract

The application discloses a radio frequency coaxial cable, which comprises a sheath, a shielding layer wrapped on the inner surface of the sheath, a wire core coaxially arranged in the center of the shielding layer, and an insulation layer wrapped on the wire core and the shielding layer, wherein the insulation layer is provided with an axial through slot, the through slot is used for forming a semi-air insulation in the cable, and the through slot is also used for circulating air flow for operation cooling of the cable. The radio frequency coaxial cable redesigns the related structure of the insulation layer, effectively reduces the overall weight of the cable and improves the insulation on the basis of ensuring the support, and simultaneously realizes better cooling effect, and is more suitable for high-load operation environment and operation environment with higher external temperature compared with the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of frequency cable, in particular to a radio frequency coaxial cable. BACKGROUND

[0002] The radio frequency coaxial cable is a cable with copper-clad aluminum wire core, shielding layer and coaxial distribution of the whole cable, which realizes signal transmission through electric signal. Unlike optical signal of optical fiber, the radio frequency coaxial cable is more susceptible to electromagnetic interference. For example, the radio frequency stable coaxial cable disclosed in the prior art with the publication number CN222785447U comprises a conductor, an insulating layer, a first conductor layer and a first thermal insulation layer. The surface of the conductor is sequentially covered with the insulating layer, the first conductor layer and the first thermal insulation layer. The first thermal insulation layer is a first aerogel film thermal insulation layer. The radio frequency stable coaxial cable can greatly prolong the time length of normal operation of the cable under extreme high temperature, reduce the weight of the radio frequency stable coaxial cable and improve the applicability of the radio frequency stable coaxial cable.

[0003] For another example, the radio frequency coaxial cable disclosed in the prior art with the publication number CN118472586A comprises an inner conductor, an insulating part and an outer conductor arranged from inside to outside. The insulating part comprises an inner insulating layer, a support part and an outer insulating layer arranged from inside to outside. The support part comprises a plurality of support arms. The plurality of support parts are distributed along the circumference of the radio frequency coaxial cable. The two ends of the support arm are connected with the inner insulating layer and the outer insulating layer respectively. The inner insulating layer, the outer insulating layer and the support arm form a cavity. The width dimension of the support arm along the circumference of the radio frequency coaxial cable gradually increases from the inner insulating layer to the outer insulating layer. Through this scheme, the problem of poor support effect of the radio frequency coaxial cable and the influence of the durability and reliability of the radio frequency coaxial cable when the signal loss is reduced by increasing the porosity of the insulating layer in the prior art can be solved.

[0004] The above-mentioned prior art discloses a scheme of using aerogel or air layer as an insulating layer part instead of structure to reduce the weight of the cable and improve the insulation effect. This has a high practical enlightenment for the actual application of the radio frequency cable. However, due to the small overall diameter of the radio frequency cable, the design of aerogel or multiple hollow structures can achieve the above-mentioned effect to some extent, but there are problems of high processing difficulty and poor support. SUMMARY

[0005] The present application aims to provide a radio frequency coaxial cable to solve the problem of high processing difficulty and poor support caused by the small overall diameter of the radio frequency cable and the design of aerogel or multiple hollow structures.

[0006] To achieve the above object, the present application provides the following technical scheme: a radio frequency coaxial cable, comprising a sheath and a shielding layer wrapped on the inner surface of the sheath, the shielding layer and the core wire at the center are coaxially distributed, the core wire and the shielding layer contain an insulation layer for wrapping the core wire, and the insulation layer is provided with an axial through slot, wherein the through slot is used to form a semi-air insulation in the cable, and the through slot is also used to circulate air flow for operation cooling of the cable.

[0007] Further, the through slot is connected with a gas supply mechanism installed at the end of the cable, wherein the gas supply mechanism is made of non-metallic material or copper material.

[0008] Further, the gas supply mechanism comprises an inner hollow structure ring body surrounding the outside of the insulation layer, wherein the input end of the ring body is connected with the air inlet pipe, and the output end is connected with the through slot through a plurality of air outlet pipes, and the input end is used to be connected with the air supply device.

[0009] Further, the through slot is also fitted with a reinforcing strip, wherein the reinforcing strip is also made of deformable material.

[0010] Further, the inner end of the reinforcing strip is spaced apart from the inner end of the through slot, and the spacing is used for passing air flow, and the outer end of the reinforcing strip protrudes outside the edge of the insulation layer, so that a cavity is formed between the adjacent two reinforcing strips, the edge of the insulation layer and the shielding layer.

[0011] Further, the reinforcing strip is provided with a hollow in the inside, and the inner end of the hollow is designed as an opening and is communicated with the through slot, and the hollow is used to further reduce weight and improve cooling effect.

[0012] Further, the cable is also provided with a ring part surrounding the outer surface of the shielding layer, wherein the ring part is used to reinforce the connection stability of the shielding layer and the insulation layer in the case of the hollow and the through slot in the cable.

[0013] Further, the ring part is insulated on the inner surface and inlaid with a double-path memory alloy ring structure on the outer surface.

[0014] Further, the outer surface of the reinforcing strip is provided with a reinforcing groove for increasing the friction between the shielding layer and the reinforcing strip.

[0015] Further, the top area of the side surface of the reinforcing strip is provided with an air hole penetrating through the side wall, wherein the air hole is used to communicate the hollow and the cavity.

[0016] Compared with the prior art, the radio frequency coaxial cable has the beneficial effects that the related structure of the insulating layer is redesigned, the overall weight of the cable is effectively reduced and the insulation and better cooling effect are improved on the basis of ensuring the support, and the radio frequency coaxial cable is more suitable for high-load operation environment and external high-temperature operation environment, and specific contents are shown as follows.

[0017] 1. The structure design of the through slot matched with the ring body can improve the application range of the cable by utilizing the half air insulation and weight reduction effect of the through slot, and the through slot can also have the fluid flow effect by actively introducing the fluid into the ring body, so that the active cooling effect is further improved.

[0018] As a further scheme, the reinforcing strip is added in the through slot, and the reinforcing strip is stably clamped with the through slot by utilizing the simple shape of the reinforcing strip, so that the fluid flow function in the through slot and the retention of the half air insulation and weight reduction effect are realized, and the overall support of the cable is effectively ensured, and the structural strength is improved.

[0019] 2. The cavity formed by the hollow structure of the reinforcing strip matched with the protruding design at the top end, on the one hand, can balance the fluid flow and the cable support effect by the design of the hollow structure, and on the other hand, the cavity can be formed to avoid the influence of the external environment temperature on the working temperature of the wire core, and the structure design of the air hole enables the fluid to flow in the hollow structure and the cavity, so that the cable is efficiently cooled from the central area and the outer area.

[0020] Further, the use of the ring part structure can improve the connection stability of the shielding layer, and the shielding layer can be actively deformed by utilizing the active deformation characteristics of the ring part structure when the environmental temperature is abnormal, and the accommodating space provided by the cavity can slow down the adverse effects of external abnormal factors on the operation of the cable. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the embodiment one of the present application;

[0022] Figure 2 It is a schematic diagram of the ring body distribution structure of the present application;

[0023] Figure 3 It is a schematic diagram of the internal structure of the ring body of the present application;

[0024] Figure 4 It is a schematic diagram of the reinforcing strip distribution structure of the present application;

[0025] Figure 5 It is a schematic diagram of the reinforcing strip distribution structure of the embodiment two of the present application;

[0026] Figure 6 It is a schematic diagram of the ring part distribution structure of the present application;

[0027] Figure 7 Fig. 3 is a structural schematic diagram of the ring part after deformation of the present application;

[0028] Figure 8 Fig. 4 is a structural schematic diagram of the reinforcing groove distribution structure of the present application;

[0029] Figure 9 Fig. 5 is a structural schematic diagram of the air hole distribution structure of the present application.

[0030] In the figure: 1, sheath; 2, core; 3, insulation layer; 4, shielding layer; 5, through groove; 6, ring body; 7, air outlet pipe; 8, reinforcing strip; 9, cavity; 10, hollow; 11, ring part; 12, reinforcing groove; 13, air hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying 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 of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0032] Please refer to Figures 1-9 The present application provides the following technical solutions:

[0033] Embodiment one: the technical solutions disclosed in the present embodiment are just to solve the problems existing in the prior art, such as Figures 1-3 As shown in the figure, it includes a sheath 1 and a shielding layer 4 wrapped on the inner surface of the sheath 1, and the shielding layer 4 and the core 2 at the center are coaxially distributed, and the core 2 and the shielding layer 4 contain an insulation layer 3 for wrapping the core 2, and the insulation layer 3 is provided with a through groove 5 distributed along the axial direction, wherein the through groove 5 is used to form a semi-air insulation in the cable, and the through groove 5 is also used to circulate air flow for the operation cooling of the cable, and the through groove 5 is connected with a gas conveying mechanism installed at the end of the cable, wherein the gas conveying mechanism is made of non-metallic material or copper material, and the gas conveying mechanism contains an inner hollow structure ring body 6 wrapped outside the insulation layer 3, wherein the input end of the ring body 6 is connected with an air inlet pipe, and the output end is connected with the through groove 5 through a plurality of air outlet pipes 7, wherein the input end is used to be connected with a gas supply device, and the coaxial design of the cable and the main components are similar to those of the prior art, the biggest difference is that the full solid insulation layer 3 in the prior art is designed as an insulation layer 3 with equal angle distribution of through grooves 5, the advantages of this design are that on the one hand, it can form a semi-air insulation environment and achieve better weight reduction effect, on the other hand, it can cooperate with the gas conveying mechanism to actively input air flow or insulation liquid to achieve active cooling effect, and thus it is more suitable for use in special high temperature environment or high load environment, and the gas conveying mechanism realizes the air inlet function through the input end on the ring body 6, and the fluid is introduced into the through groove 5 through the air outlet pipe 7, thereby realizing active heat dissipation.

[0034] The scheme disclosed in the present embodiment is further improved to avoid the damage of the overall structural strength of the cable caused by the excessive volume of the through slot 5, such as Figure 4 As shown, the through slot 5 is also fitted and spliced with a reinforcing strip 8, wherein the reinforcing strip 8 is also made of deformable material, and the inner end of the reinforcing strip 8 is spaced apart from the inner end of the through slot 5, and the spacing is used for passing airflow, and the outer end of the reinforcing strip 8 protrudes outside the outer edge of the insulation layer 3, so that the cavity 9 is formed between the adjacent two reinforcing strips 8, the outer edge of the insulation layer 3 and the shielding layer 4. In the present scheme, after the through slot 5 is extruded or cut into shape, the reinforcing strip 8 with an outer surface coinciding with the inner wall of the through slot 5 can be additionally provided. In the case of the reinforcing strip 8 being solid, the inner end thereof still has a gap with the inner bottom wall of the through slot 5, so as to ensure that the through slot 5 can normally play its role. At the same time, the top end of the reinforcing strip 8 also forms the cavity 9 due to its protruding arrangement, and the cavity 9 can form better semi-air insulation effect by being staggered with the through slot 5, and can also have better auxiliary heat insulation effect.

[0035] Embodiment two: In the scheme disclosed in the present embodiment, the structural strength and stability of the cable are further improved, as shown in Figure 6 The hollow 10 is provided in the inside of the reinforcing strip 8, the inner end of the hollow 10 is designed as an opening and communicates with the through slot 5, and the hollow 10 is used for further reducing weight and improving cooling effect. The cable also has a ring part 11 distributed around the outer surface of the shielding layer 4, wherein the ring part 11 is used to reinforce the connection stability of the shielding layer 4 and the insulation layer 3 in the case that the hollow 10 and the through slot 5 exist in the cable. The ring part 11 has an inner surface insulation and an outer surface inlaid with a double-path memory alloy ring structure, and the ring part 11 plays a role more similar to a hoop, which is used to reinforce the connection stability of the shielding layer 4. At the same time, since the outer part of the ring part 11 is made of memory alloy material and is more fitted to the cable skin, when the ambient temperature is not abnormally high but the cable temperature is abnormally high, the ring part 11 can also guide the shielding layer 4 to deform in the cavity 9 towards the insulation layer 3 by actively deforming, thereby improving the safety of the cable as a kind of temporary emergency self-protection means. After the normal temperature is restored, the memory alloy can automatically deform to guide the shielding layer 4 to deform or be repaired artificially.

[0036] As shown in Figures 8-9As shown, the outer surface of the reinforcing strip 8 is provided with reinforcing grooves 12 for increasing the friction between the shielding layer 4 and the reinforcing strip 8, and the top area of the side surface of the reinforcing strip 8 is provided with air holes 13 penetrating through the side wall, wherein the air holes 13 are used to connect the hollow 10 and the cavity 9, and the use of the air holes 13 can guide the fluid flowing in the hollow 10 into the cavity 9, so as to respectively reduce the temperature of the surface area and the core area of the cable synchronously, and the cooling effect is better, and the application is suitable for the environment with higher external temperature and higher cable working load.

[0037] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A radio frequency coaxial cable comprising a sheath (1) and a shield (4) wrapped around the inner surface of the sheath (1), while the shield (4) and a core (2) in the center are coaxially distributed, and the core (2) and the shield (4) contain an insulating layer (3) for wrapping the core (2), characterized in that: The insulating layer (3) is also provided with through grooves (5) distributed along the axial direction, wherein the through grooves (5) are used for forming semi-air insulation in the cable, and the through grooves (5) are also used for circulating air flow for operation cooling of the cable. The through grooves (5) are also fitted with reinforcing strips (8), wherein the reinforcing strips (8) are also made of deformable material. The inner end of the reinforcing strip (8) is spaced apart from the inner end of the through groove (5), and the spacing is used for passing air flow, and the outer end of the reinforcing strip (8) protrudes from the outer edge of the insulating layer (3), so that a cavity (9) is formed between the adjacent two reinforcing strips (8), the outer edge of the insulating layer (3) and the shielding layer (4).

2. A radio frequency coaxial cable according to claim 1, characterized in that: The through grooves (5) are connected with a gas conveying mechanism installed at the end of the cable, wherein the gas conveying mechanism is made of non-metallic material or copper material.

3. A radio frequency coaxial cable according to claim 2, wherein: The gas conveying mechanism comprises an inner hollow structure ring body (6) surrounding the insulating layer (3), wherein the input end of the ring body (6) is connected with a gas inlet pipe, and the output end is connected with the through grooves (5) through a plurality of gas outlet pipes (7), wherein the input end is used for being connected with a gas supply device.

4. A radio frequency coaxial cable according to claim 1, characterized in that: The reinforcing strip (8) is provided with a hollow (10) inside, the inner end of the hollow (10) is designed as an opening and is communicated with the through groove (5), and the hollow (10) is used for further reducing weight and improving cooling effect.

5. A radio frequency coaxial cable according to claim 4, wherein: The cable is also provided with a ring part (11) surrounding the outer surface of the shielding layer (4), wherein the ring part (11) is used for stabilizing the connection between the shielding layer (4) and the insulating layer (3) in the case that the hollow (10) and the through groove (5) exist in the cable.

6. A radio frequency coaxial cable according to claim 5, wherein: The ring part (11) is an annular structure with an inner insulating surface and an outer surface embedded with double-path memory alloy.

7. A radio frequency coaxial cable according to claim 6, wherein: The reinforcing strip (8) is provided with a reinforcing groove (12) on the outer surface for increasing the friction between the shielding layer (4) and the reinforcing strip (8).

8. A radio frequency coaxial cable according to claim 7, characterized in that: The top area of the side surface of the reinforcing strip (8) is provided with an air hole (13) penetrating through the side wall, wherein the air hole (13) is used for connecting the hollow (10) and the cavity (9).

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