Anti-crack semi-rigid cable
An anti-crack, cable technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of system paralysis, parts damage, tubular outer conductor cracking, etc., to ensure the concentricity and service life effect.
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Embodiment approach 1
[0031] Such as figure 1 with figure 2 As shown, it includes an inner conductor 1, a dielectric layer 2 wrapped outside the inner conductor 1, and an outer conductor 4 wrapped outside the dielectric layer 2. A buffer layer 3 is also provided between the dielectric layer 2 and the outer conductor 4, and the buffer layer 3 is composed of Consisting of a continuous solid material with pores, specifically: the buffer layer 3 is a cylindrical structure with bubbles 31a dispersed therein, and the thickness of the buffer layer 3 is 0.1-5 mm. The dielectric layer 2 and the buffer layer 3 play the role of isolating the inner conductor 1 and the outer conductor 2, and can maintain a certain degree of concentricity between the two to avoid disturbance in the power transmission process. The dielectric layer 2 is attached to the inner conductor 1. When the inner conductor 1 heats up, the dielectric layer 2 will expand; but because the buffer layer 3 contains bubbles 31a, it is compressible a...
Embodiment approach 2
[0033] Such as figure 1 with image 3 As shown, the difference from Embodiment 1 is: the buffer layer 22 is wrapped by a single layer or multiple layers of a film 32a with micropores 32b in it. The single layer thickness of the film 32a is 0.01-2mm, and the total wrapping thickness is 0.05-5mm. The wrapping can take many forms such as wrapping, vertical wrapping or squeezing. Since the film 32a itself has micropores 32b inside, it is compressible, and therefore the cushion layer 3 formed by wrapping also has compressibility. In addition, in the case of cable bending, the wrapping layers can slide against each other, and the material will not be fatigued due to cable bending, and it is less likely to be damaged.
[0034] The film 32a may be an expanded microporous film produced by stretching a PTFE material, and the density of the film 32a is 0.5-1.9 g / cm 3 . Within a certain stretching range, the film 32a can have an anti-cracking effect of the outer conductor 4. However, the ...
Embodiment approach 3
[0036] Such as figure 1 with Figure 4 As shown, the difference from the first embodiment is that the buffer layer 3 includes a loop portion 33a close to the outer conductor 4 and a number of convex teeth 33b uniformly distributed on the inner wall of the loop portion 33a, and the convex teeth 33b resist the dielectric layer 2. The outer surface. The ring portion 33a can conform to the structure of the inner wall of the outer conductor 4. When the dielectric layer 2 expands, the protruding teeth 33b will still resist the outer surface of the dielectric layer 2 but will be elastically deformed, which can compensate for the expansion and change of the dielectric layer 2. Avoid the outer conductor 4 from bursting.
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