CN203850027U

CN203850027U - Waterproof fireproof compensating cable

Info

Publication number: CN203850027U
Application number: CN201320861033.6U
Authority: CN
Inventors: 王晓强
Original assignee: JIANGSU JINNIU WIRES AND CABLES GROUPS CO Ltd
Current assignee: JIANGSU JINNIU WIRES AND CABLES GROUPS CO Ltd
Priority date: 2013-12-24
Filing date: 2013-12-24
Publication date: 2014-09-24
Anticipated expiration: 2023-12-24

Abstract

The utility model relates to a waterproof fireproof compensating cable, and the cable comprises a cable core and a flame-retardant polyolefin outer sheath. The cable core consists of two compensating wires with insulating layers. The cable core is wrapped by a first glass-fiber non-woven fabric layer which is wrapped by a shielding layer. The shielding layer is wrapped by a second glass-fiber non-woven fabric layer. Fireproof mud is put between the two compensating wires and between the cable core and the first glass-fiber non-woven fabric layer. The flame-retardant polyolefin outer sheath wraps the second glass-fiber non-woven fabric layer. The beneficial effects of the utility model are that the glass-fiber non-woven fabric layers can achieve fire resistance and prevent the fireproof mud from falling at the same time, and improves the fireproof performance. The fireproof mud can still wrap the internal cable core effectively after the outer sheath is burnt out, thereby preventing moisture from causing short circuit. The compensating cable can pass an A-type fireproof test, is high in structural strength, and is good in tensile property.

Description

Water-and fire-proof compensating cable

Technical field

The utility model relates to a kind of water-and fire-proof compensating cable.

Background technology

In certain temperature range, the wire that thermoelectricity capability and hot thermocouple electrical property are very close is called the compensating wire of thermocouple.Press thermocouple medium temperature rule, the combined potential value in thermocouple temperature measurement loop is only relevant with the temperature of hot junction and reference end, and the impact that not changed by medium temperature, so valuable thermocouple material that can replace needs to extend with the compensating cable matching with thermocouple material, reference end is extended to instrument terminals by thermocouple terminal box, by compensating cable, former reference end temperature is compensated.Need to use fire safe type compensating cable using under the adverse circumstances that Temperature Difference Ratio is larger, the wrapped fire-resisting cable of ordinary mica tape is because compensating wire itself is harder, and fireproof construction is not easy to keep, and this kind fire safe type compensating wire is applicable to the fire-resistant high occasion that requires.

Utility model content

Technical problem to be solved in the utility model is: a kind of water-and fire-proof compensating cable is provided, reach the requirement of category-A fire resistance test, and structural strength is high, and has water resistance.

The utility model solves the technical scheme that its technical problem adopts: a kind of water-and fire-proof compensating cable, comprise cable core and fire retardant polyolefin oversheath, cable core consists of the compensating wire of two tape insulation layers, at cable core outer wrapping the first glass fibre non-woven layer, at the first glass fibre non-woven layer outer wrapping screen, screen outer wrapping the second glass fibre non-woven layer, between compensating wire and between cable core and the first glass fibre non-woven layer, filling anti-chamotte, fire retardant polyolefin oversheath is wrapped in outside the second glass fibre non-woven layer.

Further limit, insulating barrier is polyvinyl chloride insulation layer.

Further limit wrapped ceramic silicon rubber composite band outside the second glass fibre non-woven layer.There is ceramic in ceramic silicon rubber composite band, can further improve fire resistance under the high temperature of burning, prevents that glass fibre non-woven layer from, under long-time high temperature, departing from, and cannot effectively wrap up anti-chamotte.

The beneficial effects of the utility model are: glass fibre non-woven layer is in fire-resistant, can also prevent that anti-chamotte from coming off, improve fire resistance, the afterburnts such as sheath of layer still can effectively be wrapped up inner cable core to anti-chamotte outside, prevent the short circuit that moisture content causes, this compensating cable can pass through category-A fire resistance test, and structural strength is high, and tensile property is good.

Accompanying drawing explanation

Fig. 1 structural representation of the present utility model;

In figure: 1, fire retardant polyolefin oversheath; 2, compensating wire; 3, insulating barrier; 4, the first glass fibre non-woven layer; 5, screen, 6. the second glass fibre non-woven layer, 7. anti-chamotte, 8. ceramic silicon rubber composite band.

Embodiment

As shown in Figure 1, a kind of water-and fire-proof compensating cable, comprise cable core and fire retardant polyolefin oversheath 1, cable core consists of the compensating wire 2 of two tape insulation layers 3, at cable core outer wrapping the first glass fibre non-woven layer 4, at the first glass fibre non-woven layer 4 outer wrapping screen 5, screen 5 outer wrapping the second glass fibre non-woven layers 6, between compensating wire 2 and between cable core and the first glass fibre non-woven layer 4, filling anti-chamotte 7, fire retardant polyolefin oversheath 1 is wrapped in outside the second glass fibre non-woven layer 6.

Insulating barrier 3 is polyvinyl chloride insulation layer.

In the outer wrapped ceramic silicon rubber composite band 8 of the second glass fibre non-woven layer 6.

Claims

1. a water-and fire-proof compensating cable, it is characterized in that: comprise cable core and fire retardant polyolefin oversheath (1), described cable core consists of the compensating wire (2) of two tape insulation layers (3), at cable core outer wrapping the first glass fibre non-woven layer (4), at the first glass fibre non-woven layer (4) outer wrapping screen (5), screen (5) outer wrapping the second glass fibre non-woven layer (6), between compensating wire (2) and between cable core and the first glass fibre non-woven layer (4), filling anti-chamotte (7), fire retardant polyolefin oversheath (1) is wrapped in outside the second glass fibre non-woven layer (6), wrapped ceramic silicon rubber composite band (8) outside the second described glass fibre non-woven layer (6).

2. water-and fire-proof compensating cable according to claim 1, is characterized in that: described insulating barrier (3) is polyvinyl chloride insulation layer.