CN201689718U - Water-blocking stain-resisting rubber sleeve cable - Google Patents

Abstract

The utility model discloses a water-blocking stain-resisting rubber sleeve cable. The cable comprises an inner core. The outer surface of the inner core is coated with an inner jacket. The outside of the inner jacket is longitudinally coated with an embossed aluminium-plastic composite belt. The outside of the embossed aluminium-plastic composite belt is coated with an outer jacket. The inner core comprises an inner conductor. The outer surface of the inner conductor is provided with an insulating layer. A first water-blocking belt is wound outside of the insulating layer. The water-blocking stain-resisting rubber sleeve cable has the advantages of good insulating property and mechanical property of the cable, high elasticity, small compression deformation, over 60 percent of rebound rate, oil stain resistance, solvent resistance, no secondary combustion, good weather resistance, cold resistance and thermal ageing resistance, reasonable structure, bending property and longitudinal water-blocking property.

Description

A water-repelling and pollution-resistant rubber-sheathed cable

technical field

The utility model relates to a cable, in particular to a water-blocking and pollution-resistant rubber-sheathed cable used in oily, water-immersed, and strong corrosion environments such as industry, agriculture, commerce, and construction.

Background technique

When cables are used in oily, water-immersed, and highly corrosive environments such as industry, agriculture, commerce, and construction, they are not only soaked in water, but also eroded by oily, highly corrosive substances. The existing technical process is to use natural styrene-butadiene rubber as insulation and sheath, and when it is cabled, it is wrapped with water-blocking tape. Natural rubber is a non-polar substance, which is easily soluble in oil stains. Styrene-butadiene rubber has poor insulation performance, unstable physical properties, and large changes with temperature changes, so its radial water resistance and oil resistance are poor; prior art There is no longitudinal corrugated aluminum-plastic composite tape in the structure of the process, and it does not have longitudinal waterproof performance.

The traditional water-blocking and pollution-resistant cable production technology has the following problems: 1) The poor performance of the material itself leads to poor insulation and mechanical properties; 2) Poor insulation and sheath elasticity, large compression deformation, and low strength; 3) Poor oil resistance; 4) Weather resistance, heat aging resistance, poor cold resistance; 5) Flammability, good flame delay; 6) Unreasonable structure, poor radial water resistance, and no longitudinal water resistance.

Utility model content

Purpose of the invention: The purpose of this utility model is to overcome the deficiencies of the prior art and provide a water-blocking and pollution-resistant rubber-sheathed cable with a reasonable structure. The water-blocking and pollution-resistant rubber-sheathed cable has very good insulation and mechanical properties, and Good stability, oil stain resistance, solvent resistance, weather resistance, cold resistance, heat aging resistance, non-flammability, can block water radially and vertically; can be applied to oil, water, etc. in industry, agriculture, commerce, construction, etc. immersion, strong corrosion environment.

Technical solution: In order to solve the above technical problems, a water-blocking and pollution-resistant rubber-sheathed cable described in the utility model includes an inner core, an inner sheath is coated on the outer surface of the inner core, and the outer surface of the inner sheath is vertically Wrapped with a corrugated aluminum-plastic composite tape, the outer surface of the corrugated aluminum-plastic composite tape is covered with an outer sheath; the inner core includes an inner conductor, and an insulating layer is arranged on the outer surface of the inner conductor, and the insulating layer There is a first water-blocking tape around the outside of the bag.

The insulating layer is an ethylene-propylene rubber layer.

The inner and outer sheaths are made of neoprene.

The inner core has one.

The inner core is a plurality of inner cores with equal nominal cross-sectional areas.

There are multiple inner cores, and the nominal cross-sectional area of at least one inner core is smaller than the nominal cross-sectional area of the other inner cores.

It also includes a second water-blocking tape, through which a plurality of inner cores are fastened together, and between the inner cores and between the second water-blocking tape and the inner core is filled with water-blocking tape. strip.

In the utility model, the conductor adopts electrolytic annealed copper wire, the insulation adopts ethylene-propylene rubber, the filling adopts water-blocking filling strips, the wrapping adopts water-blocking wrapping tape, the inner sheath adopts neoprene rubber, and the longitudinal wrapping is embossed aluminum-plastic composite tape. The outer sheath is neoprene. High-quality insulating materials and sheath materials not only have good insulation properties, mechanical properties, good stability, oil resistance, solvent resistance, weather resistance, cold resistance, heat aging resistance, but also good radial water resistance; Longitudinal corrugated aluminum-plastic composite tape makes it have longitudinal water resistance.

Beneficial effects: compared with the prior art, the utility model has the advantages that (1) the insulation and mechanical properties of the cable are very good; (2) the elasticity is large, the compression deformation is small, and the rebound rate is more than 60%; (3) Neoprene is a polar substance, resistant to oil stains, solvents, and non-flammable; (4) Ethylene-propylene rubber is a saturated structure, and its weather resistance, cold resistance, and heat aging resistance are very good; (5) Neoprene is not Good air permeability, good stability, and superior radial water resistance; (6) Reasonable structural design, longitudinally embossed aluminum-plastic composite, which does not affect bending performance, and has longitudinal water resistance; (7) Elasticity and softness , Flexibility, compression resistance, tensile resistance and wear resistance are very good, which is beneficial to use in various complex environments.

Description of drawings

Fig. 1 is the structural representation of an inner core of the water-blocking and pollution-resistant rubber-sheathed cable in the utility model;

Fig. 2 is a structural schematic diagram of a medium-core water-blocking and pollution-resistant rubber-sheathed cable of the present invention;

Fig. 3 is a structural schematic diagram of the nominal cross-section of the inner core of the water-blocking and pollution-resistant rubber-sheathed cable in the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

The water-blocking and pollution-resistant rubber-sheathed cable shown in Figure 1 includes an inner core, a neoprene inner sheath 4 is coated on the outer surface of the inner core, and a rolling layer is longitudinally wrapped outside the neoprene inner sheath 4 Corrugated aluminum-plastic composite tape 5, on the outer surface of the corrugated aluminum-plastic composite tape 5 coated with neoprene outer sheath 6; The propylene rubber insulating layer 2 is wrapped with a first water-blocking tape 3 outside the insulating layer 2, and the inner conductor 1 is made of a plurality of electrolytic annealed copper wires first bundled and then re-twisted.

The water-blocking and pollution-resistant rubber-sheathed cable shown in Figure 2 includes a plurality of inner cores and a second water-blocking tape 7, and the multiple inner cores are tied together by the second water-blocking tape, and between each inner core Water-blocking strips 8 are filled between the second water-blocking tape 7 and the inner core, and the outer surface of the second water-blocking tape 7 is covered with a neoprene inner sheath 4, and the neoprene inner sheath 4 The outer surface of the sheath 4 is longitudinally covered with a corrugated aluminum-plastic composite tape 5, and the outer surface of the corrugated aluminum-plastic composite tape 5 is covered with a neoprene outer sheath 6; the inner core includes an inner conductor, and the inner conductor There is an ethylene-propylene rubber insulation layer on the outer surface of the insulation layer, and the first water-blocking tape 3 is wrapped around the outer surface of the insulation layer. The inner conductor 1 is made of a plurality of electrolytic annealed copper wires, which are first bundled and then re-twisted. of.

The structure of the water-blocking and pollution-resistant rubber-sheathed cable shown in Figure 3 is basically the same as that shown in Figure 2, the difference is that the inner core is composed of multiple circular inner cores with equal nominal cross-sectional areas and at least one standard It is said that the cross-sectional area is half of the small inner core of the circular inner core.

The utility model is a water-blocking and pollution-resistant rubber-sheathed cable (ZSW-ERX64-0.6/1KV), which adopts ethylene-propylene rubber insulation, neoprene sheath, and is longitudinally wrapped with embossed aluminum-plastic composite tape, and the filling and wrapping materials are made of Water blocking material. It is used in the environment of oil pollution, water immersion and strong corrosion in industry, agriculture, commerce, construction, etc. It has very good insulation performance, mechanical performance, and good stability, oil resistance, solvent resistance, weather resistance, cold resistance, heat resistance Aging, non-flammable, both radial and longitudinal water resistance.

A method for manufacturing a water-blocking and pollution-resistant rubber-sheathed cable, the method comprising the steps of:

1) According to the design requirements, the copper rod is drawn, annealed, bundled and twisted in turn to make the inner conductor;

2) Insulation extrusion is carried out on the outside of the inner conductor, and the first water-blocking tape is wrapped on the outer surface of the insulation to form the inner core;

3) When the inner core is one, the inner sheath is directly extruded on the outside of the first water-blocking tape, and then the outer surface of the inner sheath is longitudinally wrapped with a corrugated aluminum-plastic composite tape, and finally the outer surface of the corrugated aluminum-plastic composite tape Extruding the outer sheath to obtain the water-blocking and pollution-resistant rubber-sheathed cable;

When there are multiple inner cores, tie the multiple inner cores tightly with the second water blocking tape, then extrude the inner sheath on the outside of the second water blocking tape, and then wrap the inner sheath with corrugation longitudinally Aluminum-plastic composite tape, and finally extrude an outer sheath on the outside of the corrugated aluminum-plastic composite tape to obtain the water-blocking and pollution-resistant rubber-sheathed cable.

A method for manufacturing a water-blocking and stain-resistant rubber-sheathed cable described in the present invention will be described in detail below through a specific example.

Example: The manufacturing specification is ZSW-ERX64-0.6/1KV 3×50+1×25 (3×50+1×25 means 3 circular inner cores, and the nominal cross-sectional area of each circular inner core is 50mm ² , a circular inner core with a nominal cross-sectional area of 25mm ² ) the method of water-blocking and pollution-resistant rubber-sheathed cables, the specific steps are as follows:

1) Wire drawing: purchase Φ8.0mm electrolytic copper rod, and draw from Φ8.0mm electrolytic copper rod to Φ0.30mm copper wire;

2) Stranding: The 50mm ² inner conductor adopts a 10/70/0.30mm stranded structure, that is, 70 bundles of 0.30mm, 10 strands, and 70 0.30mm re-twisted strands per share; the 25mm ² inner conductor adopts 10/35/0.30mm stranded structure, that is, 35 bundles of 0.30mm, 10 strands, 35 strands of 0.30mm per strand, the resistance meets the requirements of the national standard: GB/T3956-2008;

3) Extruded ethylene-propylene rubber insulation, using an extrusion die, the insulation thickness of the 50mm ² inner conductor is 1.6mm, and the insulation thickness of the 25mm ² inner conductor is 1.4mm;

4) Make the inner core: the outer surface of each 50mm ² inner conductor insulation and the outer surface of the 25mm ² inner conductor insulation are respectively wrapped with the first water-blocking tape to make three 50mm ² inner cores and 1 A 25mm ² inner core;

5) Cabling: the above-mentioned three 50mm ² inner cores and one 25mm ² inner core are cabled in the right direction, and the second water-blocking tape is wrapped in the left direction, and the water-blocking strip is filled with pin support;

6) The neoprene inner sheath is extruded, and the extrusion mold is used to ensure the roundness;

7) Longitudinal wrapping embossed aluminum-plastic composite tape, after the aluminum-plastic composite tape is embossed, longitudinally wrapped, covered, and covered with high-temperature barbecue to make it bonded densely;

8) The neoprene outer sheath is extruded, and the extrusion mold is used, and the appearance is smooth and round.

After each of the above procedures, it is necessary to check whether the required requirements are met.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements can also be made, and these improvements should also be regarded as Protection scope of the present utility model.

Claims (7)

1. waterproof stain-resistant rubber sheathed cable, it is characterized in that: comprise inner core, on the outer surface of inner core, be coated with inner sheath (4), indulge being surrounded by embossing aluminium-plastic tape (5) in the outside of inner sheath (4), on the outer surface of embossing aluminium-plastic tape (5), be coated with oversheath (6); Described inner core comprises inner wire (1), is provided with insulating barrier (2) on the outer surface of inner wire (1), is surrounded with first band (3) that blocks water in the outside of insulating barrier (2).

2. waterproof stain-resistant rubber sheathed cable according to claim 1 is characterized in that: described insulating barrier (2) is the ethylene-propylene rubber layer.

3. waterproof stain-resistant rubber sheathed cable according to claim 1 is characterized in that: described inner sheath (4) and oversheath (6) are made by neoprene.

4. waterproof stain-resistant rubber sheathed cable according to claim 1 is characterized in that: described inner core has one.

5. waterproof stain-resistant rubber sheathed cable according to claim 1 is characterized in that: described inner core is the inner core that a plurality of nominal area of section equate.

6. waterproof stain-resistant rubber sheathed cable according to claim 1 is characterized in that: described inner core has a plurality of, wherein has the nominal area of section of the nominal area of section of an inner core less than other inner cores at least.

7. according to claim 1 or 5 or 6 described waterproof stain-resistant rubber sheathed cables, it is characterized in that: also comprise second band (7) that blocks water, by second band (7) that blocks water a plurality of inner cores are tightened together, and between each inner core, second the block water band and give between the inner core and be filled with water baffle bar (8).

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