CN218100763U - Cold-resistant flexible cable - Google Patents

Abstract

The utility model discloses a flexible cable that flexes of cold resistance, including wire core, packing core, be equipped with the internal insulation layer on the wire core, the wire core sets up on packing core, sets up the insulating layer in packing core outside, the insulating layer is including the insulating fixed bed, insulation support, thermal-insulated glue film and the oversheath that set gradually be equipped with main heater strip among the insulation support, main heater strip is the helical structure setting, and the equidistance is equipped with low temperature trigger mechanism on main heater strip. The utility model utilizes the electric heating wire to automatically heat the cable at low temperature, thereby ensuring the good state of the cable when the cable is used in the low-temperature environment and preventing the cable from being damaged; the winding resistance is good, the cold resistance effect and the compression and impact resistance effect are good, the cold resistance and the compression resistance of the cable are enhanced, the influence of environmental factors on construction is reduced, the requirements of laying and sustainable operation of the cable in low-temperature and severe cold environments can be met, and the service life of the cable is prolonged.

Description

Cold-resistant flexible cable

Technical Field

The utility model belongs to the technical field of cable manufacture, especially, relate to a flexible cable that bends of cold resistance.

Background

Electric energy or signal transmission can not be separated from the cable, in certain high latitude areas, the cable can be hardened and become brittle under the condition that the temperature is too low in winter, the outer skin of the cable can fall off and be damaged under the condition of external force, and the cable is easy to damage particularly under the use working condition that the cable needs to be bent.

Therefore, the development of a cold-resistant cable is the key to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flexible cable that bends of cold resistance.

The utility model discloses a following technical scheme realizes: including wire core, packing core, be equipped with the internal insulation layer on the wire core, the wire core sets up on packing the core, sets up the insulating layer in packing the core outside, the insulating layer is including the insulating fixed bed, insulation support, thermal-insulated glue film and the oversheath that set gradually be equipped with main heater strip in the insulation support, main heater strip is the helical structure setting, and the equidistance is equipped with low temperature trigger mechanism on main heater strip, low temperature trigger mechanism includes protective housing, insulating partition, conductive contact piece, conductive contact ring, the middle section of protective housing sets up insulating partition, and insulating partition separates the inner chamber of protective housing for controlling two movable chambers, sets up the connecting hole of connecting main heater strip on each movable chamber respectively, and main heater strip passes the connecting hole that corresponds with it and extends into movable chamber be equipped with an at least conductive contact piece on the insulating partition, set up conductive contact ring respectively at conductive contact piece's both ends, and conductive contact ring cover is established on the main heater strip that corresponds with it, and the setting of the two clearance then is equipped with the flange that matches with conductive contact ring at the tip of main heater strip.

The beneficial effects of the utility model are that: the utility model utilizes the electric heating wire to automatically heat the cable at low temperature, thereby ensuring the good state of the cable when the cable is used in the low temperature environment and preventing the cable from being damaged; the winding resistance is good, the cold resistance effect and the compression and impact resistance effect are good, the cold resistance and the compression resistance of the cable are enhanced, the influence of environmental factors on construction is reduced, the requirements of laying and sustainable operation of the cable in low-temperature and severe cold environments can be met, and the service life of the cable is prolonged.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic structural view of the low-medium temperature trigger mechanism of the present invention;

the reference numbers in the figures: 1-filling core, 2-conducting wire core, 3-insulating fixing layer, 4-heat preservation sleeve, 5-heat insulation glue layer, 6-cold-resistant glue layer, 7-waterproof glue layer, 8-outer sheath, 9-low temperature trigger mechanism, 10-protective shell, 11-insulating partition, 12-conductive contact piece, 13-conductive contact ring, 14-anti-drop flange, 15-temperature sensing element, 16-auxiliary heating wire and 17-main heating wire.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is provided with reference to the accompanying drawings.

The cold-resistant flexible flex cable shown in fig. 1-2 comprises a conductor core 2 and a filling core 1, wherein an inner insulating layer is arranged on the conductor core 2, the conductor core 2 is arranged on the filling core 1, an insulating layer is arranged outside the filling core 1, the insulating layer comprises an insulating fixed layer 3, a heat-insulating sleeve 4, a heat-insulating glue layer 5 and an outer sheath 8 which are sequentially arranged, a main heating wire 17 is arranged in the heat-insulating sleeve 4, the main heating wire 17 is arranged in a spiral structure, a low-temperature trigger mechanism 9 is arranged on the main heating wire 17 at equal intervals, the low-temperature trigger mechanism 9 comprises a protective shell 10, an insulating partition 11, a conductive contact 12 and a conductive contact ring 13, the middle section of the protective shell 10 is provided with the insulating partition 11, and the insulating partition 11 divides an inner cavity of the protective shell 10 into a left movable cavity and a right movable cavity, set up the connecting hole of connecting main heater strip 17 on each activity chamber respectively, main heater strip 17 passes the connecting hole extension that corresponds with it and goes into the activity chamber be equipped with an at least elastic conductive contact 12 on the insulating wall 11, set up conductive contact ring 13 respectively at the both ends of conductive contact 12, conductive contact ring 13 cover is established on the main heater strip 17 that corresponds with it, the setting of the two clearance, conductive contact ring 13 can slide each other with main heater strip 17, the tip of main heater strip 17 then is equipped with the anticreep flange 14 that matches with conductive contact ring 13, and the external diameter of anticreep flange 14 is greater than the internal diameter of conductive contact ring 13, ambient temperature reduces to make conductive contact 12 take place crooked back, conductive contact ring 13 can contact main heater strip 17 circular telegram.

By adopting the technical scheme, the main heating wire 17 is connected with the low-voltage power supply, the main heating wire 17 is separated from the conductive contact ring 13 under the common condition, and after the temperature is reduced to a preset value, the cable structure layer is contracted to deform the conductive contact piece 12 and the conductive contact ring 13, so that the main heating wire 17 is contacted with the conductive contact ring 13, the main heating wire 17 is connected with the power supply, the main heating wire 17 slowly generates heat, and the cable is prevented from being damaged at low temperature; after the temperature rises to a normal value, the cable structure layer, the conductive contact 12 and the conductive contact ring 13 are restored, so that the main heating wire 17 is disconnected from the conductive contact ring 13, and the main heating wire 17 stops heating; the cable among the above-mentioned technical scheme can produce heat automatically at low temperature, prevents to freeze and damages, can use in the cold area of high latitude.

Thermal-insulated glue film 5 and oversheath 8 between be equipped with cold-resistant glue film 6 and waterproof glue film 7 in proper order, cold-resistant glue film 6 sets up for cellular structure, this structure can promote thermal insulation performance of thermal-insulated glue film 5, reduces cable heat consumption, the energy saving to effectively improve the tensile ability of cable, make it have certain shock attenuation efficiency, in low temperature environment, the cable easily adheres to after generating heat has steam, consequently design waterproof glue film 7 does the processing, further the protective capacities of promotion cable, the job stabilization and the reliability of guarantee cable.

The heat-insulating sleeve 4 is made of butyl rubber, the butyl rubber has good air tightness, heat resistance, ageing resistance, shock absorption and electric insulation performance and is environment-friendly, so that the heat-insulating sleeve is suitable for serving as a heat-insulating material of a cable, the heat-insulating sleeve 4 cannot be easily damaged and aged when the main heating wire 17 heats the cable for multiple times, and the service life of the heat-insulating sleeve can be effectively prolonged.

5 outside axial equidistance on thermal-insulated glue film be equipped with temperature sensing element 15, vice heater strip 16, each temperature sensing element 15, vice heater strip 16 establish ties through the wire respectively, when using, connect the wire controlling means of peripheral hardware, when temperature sensing element 15 senses the cable temperature and is less than the setting condition, controlling means starts vice heater strip 16 heating cable, set up main heater strip 17, vice heater strip 16 constitutes dual heat preservation guarantee to the cable, promote low temperature resistant ability, and effectively guarantee the stability of transmission of electricity work.

The main heating wire 17 and the auxiliary heating wire 16 are both electric heating wires.

The outer sheath 8 is made of silicon rubber, the outer wall surface of the outer wall of the outer sheath is uniformly provided with a polyimide coating, the polyimide has excellent freezing resistance and low-temperature resistance, the cold resistance and freezing resistance of the cable can be further improved, the coating structure is thin, and the cost is saved while the protective performance of the cable is enhanced.

The lead core 2 is a silver-plated conductor, so that the transmission performance in a low-temperature environment is improved.

Claims (6)

1. The utility model provides a flexible cable that flexes of cold resistance, includes wire core (2), packing core (1), is equipped with the internal insulation layer on wire core (2), and wire core (2) set up on packing core (1), sets up insulating layer, its characterized in that in packing core (1) outside: the insulating layer is including insulating fixed bed (3), insulation support (4), thermal-insulated glue film (5) and oversheath (8) that set gradually be equipped with main heater strip (17) in insulation support (4), main heater strip (17) are the helical structure setting, equidistantly on main heater strip (17) be equipped with low temperature trigger mechanism (9), low temperature trigger mechanism (9) are including protective housing (10), insulating wall (11), conductive contact piece (12), conductive contact ring (13), the middle section of protective housing (10) sets up insulating wall (11), and insulating wall (11) are separated the inner chamber of protective housing (10) for controlling two movable chambers, set up the connecting hole of connecting main heater strip (17) on each movable chamber respectively, and main heater strip (17) pass the connecting hole that corresponds with it and extend into movable chamber be equipped with an at least conductive contact piece (12) on insulating wall (11), set up conductive contact ring (13) respectively at conductive contact piece (12) both ends, conductive contact ring (13) cover establish main heater strip (17) that correspond with it, and the both gaps set up conductive contact ring (13) and then the suitable flange (14) that match.

2. The cold-resistant flexible flex cable of claim 1, wherein: the thermal insulation rubber layer (5) and the outer sheath (8) are sequentially provided with a cold-resistant rubber layer (6) and a waterproof rubber layer (7), and the cold-resistant rubber layer (6) is arranged in a honeycomb structure.

3. The cold-resistant flexible flex cable of claim 1, wherein: the heat-insulating sleeve (4) is made of butyl rubber.

4. The cold-resistant flexible flex cable of claim 1, wherein: the outer portion of the heat insulation glue layer (5) is provided with temperature sensing elements (15) and auxiliary heating wires (16) in an axial direction at equal intervals, and the temperature sensing elements (15) and the auxiliary heating wires (16) are connected in series through leads respectively.

5. The cold-resistant flexible flex cable of claim 1, wherein: the outer sheath (8) is made of silicon rubber, and the outer wall surface of the outer wall of the outer sheath is uniformly provided with a polyimide coating.

6. The cold-resistant flexible flex cable of claim 1, wherein: the lead core (2) is a silver-plated conductor.

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