High-strength intrinsic safety instrument cable

A high-strength technology for instrument cables, applied in the direction of insulated cables, cables, circuits, etc., can solve problems such as prone to failure and poor strength, and achieve the effects of improving strength, meeting multi-corrosion, and improving shielding performance

Inactive Publication Date: 2014-12-31
申晓华
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At the same time, most intrinsically safe instrumentation cables have poor strength and are prone to failure

Method used

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  • High-strength intrinsic safety instrument cable

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0014] Such as figure 1 As shown, a high-strength intrinsically safe instrument cable includes a cabled core, the cabled core is wrapped with a polyester film layer, the polyester film is wrapped with an aluminum foil polyester composite tape, and the aluminum foil polyester A grounding drain wire twisted by a tinned copper wire is clamped inside the composite tape, and the drain wire is in contact with the aluminum layer of the aluminum foil polyester composite tape. A braided layer of tinned copper wire is arranged outside the lining layer, and a composite sheath is arranged outside the braided shielding layer, and two high-strength steel wires parallel to each other and arranged along the longitudinal direction of the cable are arranged at the center of the wall thickness of the composite sheath. Among them, the four groups of cond...

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Abstract

The invention discloses a high-strength intrinsic safety instrument cable which comprises a cabling wire core. The cable is characterized in that the cabling wire core wraps a polyester film layer; an aluminum foil polyester composite tape is wrapped outside the polyester film layer; an earthing drainage wire stranded by tinned copper wires is clamped in the aluminum foil polyester composite tape; the drainage wire is contacted with an aluminum layer of the aluminum foil polyester composite tape; an inner lining layer is arranged outside the aluminum foil polyester composite tape; a tinned copper wire braided layer is arranged outside the inner lining layer; a composite sheath is arranged outside a braided shielding layer; and two parallel high-strength steel wires arranged in a longitudinal direction of the cable are arranged in the center of wall thickness of the composite sheath. Compared with the prior art, the aluminum foil polyester composite tape and the tinned copper wires braid a double composite shielding structure, and the two parallel high-strength steel wires are arranged in the center of the wall thickness of the composite sheath to form a tensile member, so that a shielding property and the strength of the cable can be greatly improved, and the cable is safer and more reliable to use.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a high-strength intrinsically safe instrument cable. Background technique [0002] With the transfer of global energy exploitation to the ocean, offshore oil and gas engineering is in the ascendant. Because offshore oil and gas projects are full of flammable and explosive oil and gas, in order to ensure the safety of electrical signal transmission in the equipment, special intrinsically safe instrument cables are required to match it. The main performance of intrinsically safe instrument cables for marine engineering is low capacitance and low inductance, and capacitance and inductance are related to many factors such as conductor material, insulating material, insulation thickness, and twisting pitch. The design must take into account the mutual interference between the twisted pairs of the cable and the external interference to the cable. At the same time, the high...

Claims

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Application Information

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IPC IPC(8): H01B7/00H01B7/17H01B7/22H01B7/28H01B7/02
CPCY02A30/14
Inventor 申晓华
Owner 申晓华
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