JPWO2019047929A5

JPWO2019047929A5 -

Info

Publication number: JPWO2019047929A5
Application number: JP2020513749A
Authority: JP
Publication date: 2022-12-13
Anticipated expiration: 2038-09-07

Description

ここで図３を参照すると、開示の実施形態による他の例示のケーブル３０が示される。ケーブル３０は、スチールテープ３６（例えば、Ａ６０６合金）を挟む２層の難燃性テープ３２、３４（例えば、マイカ系テープ、セラミックテープ（Ａｌ_２Ｏ_３及びＳｉＯ_３）、シリカテープ（ＳｉＯ_３）、又は（Ａｌ_２Ｏ_３及びＳｉＯ_３を備える）メッシュ編みなど）を備える。ケーブル３０はさらに、外部難燃性テープ３２を囲むように構成された難燃性ジャケット材３８（例えば、難燃性可塑性エストラマ）をさらに備える。図２の構成と同様に、難燃性テープ３２及び３４、スチールテープ３６及び難燃性ジャケット３８の組合せは、銅導体４０、４２を劣化及び酸化から保護するように機能する。中心導体４０は、導体４０を螺旋状に囲む誘電体４４によって適所に保持され、例えば、セラミックロープを備え得る。ただし、他の形態のセラミックが使用され得ることが理解されるべきである。 Referring now to FIG. 3, another exemplary cable 30 is shown according to the disclosed embodiments. The cable 30 consists of two layers of flame retardant tapes 32, 34 (e.g. mica-based tape _, ceramic tape ( _Al2O3 and _SiO3 ), silica tape ( _SiO3 ), or mesh (comprising Al ₂ O ₃ and SiO ₃ ). Cable 30 further comprises a flame retardant jacket material 38 (eg, a flame retardant plastic elastomer) configured around the outer flame retardant tape 32 . Similar to the configuration of FIG. 2, the combination of flame retardant tapes 32 and 34, steel tape 36 and flame retardant jacket 38 serve to protect copper conductors 40, 42 from degradation and oxidation. Center conductor 40 is held in place by a dielectric 44 that spirally surrounds conductor 40 and may comprise, for example, a ceramic rope. However, it should be understood that other forms of ceramic may be used.

Claims

a coaxial cable,
an inner conductor;
an outer conductor annularly arranged around the inner conductor;
a dielectric separator disposed about at least a portion of the inner conductor to keep the outer conductor substantially separate from the inner conductor, the dielectric separator comprising ceramic beads;
a tape layer comprising at least one layer of tape annularly arranged around the outer conductor, the tape layer preventing air from entering the cable in the event of a fire;
A coaxial cable in which the tape layers comprise two layers of flame-retardant tape sandwiching a metal tape.

2. The coaxial cable of claim 1 , wherein said metal tape comprises a material selected from the group consisting of steel, stainless steel, copper, and copper clad with stainless steel.

The coaxial cable of claim 1, wherein the metal tape comprises at least one of stainless steel tape, steel tape, copper tape, and copper clad stainless steel tape.

2. The coaxial cable of claim 1, wherein the flame retardant tape comprises at least one woven glass substrate coated on both sides with a flame retardant compound and woven glass.

2. The coaxial cable of claim 1, further comprising a flame retardant jacket annularly disposed around said tape layer.

6. The coaxial cable of Claim 5 , wherein the flame retardant jacket comprises a flame retardant thermoplastic material.

6. The coaxial cable of claim 5 , wherein said flame retardant tape is annularly disposed between said metal tape and said flame retardant jacket.

2. The coaxial cable of claim 1 , wherein said ceramic beads are inserted into a plastic dielectric tape .

2. The coaxial cable of claim 1, wherein said ceramic beads of said dielectric separator are encapsulated within a flame retardant tape.

2. The coaxial cable of claim 1, wherein said ceramic beads of said dielectric separator are encapsulated in a flame retardant ceramic fiber mesh.

2. The coaxial cable of claim 1, wherein the outer conductor is jacketed with an intumescent compound.

12. The coaxial cable of claim 11 , wherein the intumescent flame retardant compound is a coating of paint applied to the outer surface of the outer conductor.

12. The coaxial cable of claim 11 , wherein a jacket compound disposed around the outer conductor comprises the intumescent flame retardant compound .

In the event of a fire, the metal tape shields the outer conductor from direct exposure to heat and air at the melting point of the outer conductor, and the two layers of flame-retardant tape cover the inner conductor and the outer conductor. 2. The coaxial cable of claim 1, which prevents oxidation and deterioration .