CN208706306U - A kind of computer blocks water shielded cable - Google Patents

Abstract

It blocks water shielded cable the utility model discloses a kind of computer, including insulated wire cores, the first water sucting belt, copper strips sub-shield, the second water sucting belt, water suction gasket for packing, the first water suction band, the total shielded layer of copper strips, the second water suction band and high density polyethylene (HDPE) sheath, insulated wire cores are made of copper conductor, polyethylene layer, and polyethylene layer is extruded on copper conductor；Two pairs of insulated wire cores pair twists constitute separated-shielding pair twist core, and are surrounded with the first water sucting belt, copper strips sub-shield and the second water sucting belt according to this in separated-shielding pair twist core periphery；Gap is filled by water suction gasket for packing between multipair separated-shielding pair twist core, and gap periphery is around the first water suction band of double-baging；The wrapped total shielded layer of copper strips outside first water suction band, is provided with two layers second water suction bands on the total shielded layer of copper strips；It is provided with high density polyethylene (HDPE) sheath outside second water suction band, extrudes molding.This cable has good longitudinally and radially block-water performance, can prevent to immerse inside cable comprehensively.

Description

A kind of computer blocks water shielded cable

Technical field

The utility model relates to cable production art, block water shielded cable more particularly to a kind of computer.

Background technique

In the countries and regions that waterpower resourses development and utilization level is higher or waterpower resourses are poor, has the expansion in power station It is imperative to build and be transformed, and the hydroenergy storage station that the cooperation construction of nuclear power station is built will increase.In China in addition to there is emphasis Ground is built outside large-scale backbone power station, and medium and small power station is since the construction period is short, quick, effect on environment is small, it will into one Step is taken seriously.As the reform of electricity price system is conducive to when can more properly embody and evaluate hydroelectric economic benefit Absorb investment, Quicken Hydropower Construction.In construction of hydropower facilities previous work, novel prospecting technique such as remote sensing, telemetering, physical prospecting and meter Calculation machine, CAD etc. will be developed and popularized；The problems such as to flood, silt, reservoir region immigration, environmental protection, will be into The more appropriate processing of row；Automation, the telemechanization in power station etc. also will further improve popularization；Development is remote, super-pressure, The technology of transmission of electricitys such as superconductor are beneficial to accelerate western part of China waterpower resourses exploitation abundant, and send to the coastal region in east China Electricity.Novel cable the degree of automation is higher, is all controlled by computer, to computer cable especially waterproofing type computer cable Demand will inevitably enlarge.

In general, moisture mainly influenced after entering in cable be cable conductor and insulation.For conductor, electricity Cable is in a thermal steady state when operating normally, and conductor temperature is generally all at 60 degree or more, if moisture immersion will Lead to conductor indium, so that the contact resistance of conductor increases, influences the normal use of cable.Cable mostly uses greatly directly buried installation side Formula, so cable is very big a possibility that directly bearing from ground pressure and damaged due to human factor by external force.Electricity When being damaged, water just immerses inside cable from injury region cable, and then is deep into cable internal clearance, along cable longitudinal direction Extension, so as to cause the normal operation of cable.

Common cable does not have water resistance characteristic, higher or long-term area of heavy rainfull moisture is easily penetrated into shield in level of ground water Set is immersed in inside cable from the breakage of sheath, and causes accident.The utility model mainly pass through increase waterproof layer with Achieve the purpose that prevent moisture from penetrating into insulating layer through sheath.It realizes blocking water comprehensively for cable, not only to consider cable diameter To moisture penetration, it is contemplated that effectively prevent moisture immerse cable after along cable longitudinal direction diffusion.

Utility model content

It blocks water shielded cable the purpose of this utility model is to provide a kind of computer, structure is simple, at low cost, has good Good longitudinally and radially block-water performance can prevent to immerse inside cable, excellent combination property comprehensively.

To achieve the above object, the utility model provides the following technical solutions:

A kind of computer blocks water shielded cable, including set gradually from inside to outside insulated wire cores, the first water sucting belt (3), Copper strips sub-shield (4), the second water sucting belt (5), water suction gasket for packing (6), first water suction band (7), the total shielded layer of copper strips (8), Second water suction band (9) and high density polyethylene (HDPE) sheath (10)；The insulated wire cores are by copper conductor (1), polyethylene layer (2) Composition, the polyethylene layer (2) are extruded on copper conductor (1)；Two pairs of insulated wire cores pair twists constitute separated-shielding pair twist core, And it is surrounded with the first water sucting belt (3), copper strips sub-shield (4) and the second water sucting belt according to this in the separated-shielding pair twist core periphery (5)；Gap is filled by water suction gasket for packing (6) between multipair separated-shielding pair twist core, and gap periphery is around the first water suction of double-baging Band (7)；Wrapped total shielded layer of copper strips (8) outside first water suction band (7), is provided on the total shielded layer of copper strips (8) Two layers second water suction bands (9)；High density polyethylene (HDPE) sheath (10) are provided with outside second water suction band (9), extrude molding.

Further, the high density polyethylene (HDPE) sheath (10) of high density polyethylene (HDPE) high molecular material by being made.

Compared with prior art, the utility model has the beneficial effects that

1. the utility model the utility model is using water absorbent polymer gasket for packing and water suction band, once moisture immerses cable Inside, water sucting belt and water-suction rope will expand, and cable gap is full of, so that it is guaranteed that cable is not in longitudinal infiltration.With good Longitudinal water-blocking effect.

2. the utility model uses high density polyethylene (HDPE) sheath, chemical stability is good, is resistant to the erosion of most of soda acids (no The resistance to acid with oxidizing property), common solvent is not dissolved under room temperature, water imbibition is small.With good radial water-resisting effect.

3. the utility model is provided with one layer of water-swellable tape in the internal layer of inner sheath, it can effectively prevent moisture by electricity Cable sheath immerses inside cable.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

In figure: 1, copper conductor；2, polyethylene layer；3, water sucting belt；4, copper strips sub-shield；5, water sucting belt；6, it absorbs water Gasket for packing；7, the first water suction band；8, the total shielded layer of copper strips；9, the second water suction band；10, high density polyethylene (HDPE) sheath.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Referring to Fig. 1, the utility model provides a kind of technical solution:

A kind of computer blocks water shielded cable, including set gradually from inside to outside insulated wire cores, the first water sucting belt 3, copper Band sub-shield 4, the second water sucting belt 5, the water suction water suction of gasket for packing 6, first band 7, the total water suction of shielded layer 8, second band 9 of copper strips With high density polyethylene (HDPE) sheath 10；The insulated wire cores are made of copper conductor 1, polyethylene layer 2, the polyethylene layer 2 are extruded on copper conductor 1；Two pairs of insulated wire cores pair twists constitute separated-shielding pair twist core, and outside the separated-shielding pair twist core It encloses and is surrounded with the first water sucting belt 3, copper strips sub-shield 4 and the second water sucting belt 5 according to this；Gap between multipair separated-shielding pair twist core It is filled by water suction gasket for packing 6, and gap periphery is around the first water suction band 7 of double-baging；Wrapped copper strips outside the first water suction band 7 Total shielded layer 8 is provided with two layers second water suction bands 9 on the total shielded layer 8 of copper strips；It is arranged outside the second water suction band 9 There is high density polyethylene (HDPE) sheath 10, extrudes molding.Cable has good longitudinally and radially block-water performance.The high density Pe sheath 10 of high density polyethylene (HDPE) high molecular material by being made.

This cable has good longitudinally and radially block-water performance, can prevent to immerse inside cable comprehensively.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (2)

1. The shielded cable 1. a kind of computer blocks water, it is characterised in that: including set gradually from inside to outside insulated wire cores, first inhale Water band (3), copper strips sub-shield (4), the second water sucting belt (5), water suction gasket for packing (6), the first water suction band (7), copper strips always shield Cover layer (8), the second water suction band (9) and high density polyethylene (HDPE) sheath (10)；The insulated wire cores are by copper conductor (1), polyethylene Insulating layer (2) composition, the polyethylene layer (2) are extruded on copper conductor (1)；Two pairs of insulated wire cores pair twists constitute separated-shielding Pair twist core, and the separated-shielding pair twist core periphery be successively surrounded with the first water sucting belt (3), copper strips sub-shield (4) and Second water sucting belt (5)；Gap between multipair separated-shielding pair twist core is filled by water suction gasket for packing (6), and gap periphery is wrapped Two layers first water suction bands (7)；The wrapped total shielded layer of copper strips (8) outside first water suction band (7), the total shielded layer of copper strips (8) two layers second water suction bands (9) are provided on；High density polyethylene (HDPE) sheath is provided with outside second water suction band (9) (10), molding is extruded.
2. The shielded cable 2. a kind of computer according to claim 1 blocks water, it is characterised in that: the high density polyethylene (HDPE) shield Set (10) is made of high density polyethylene (HDPE) high molecular material.