CN209674911U - A kind of resistance to broken cable of instrument - Google Patents

Abstract

The utility model discloses a kind of resistance to broken cables of instrument, the cable successively includes cable core, polyester belt, aluminium foil layer, inner sheath, reinforcing layer and oversheath from the inside to the outside, the cable core is made of tangent be twisted of two conductor groups and two strengthening cores, each conductor group is all made of the tangent twisted composition twisted pair wire of two conductors of one layer of inner insulating layer of outer cladding, wrap up one layer of insulating outer layer in the outer surface of each twisted pair wire, two strengthening cores are located at the two sides of two tangent twisted pair wires, piece drain wire of sandwiched between the polyester belt and aluminium foil layer.The construction of cable of the utility model is simple, easy to use, and effectively the resistance to compression and tensile strength of solution raising cable, the mechanical performance and service life of cable are improved.

Description

A kind of resistance to broken cable of instrument

Technical field

The utility model relates to cable processing technique fields, and in particular to a kind of resistance to broken cable of instrument.

Background technique

Wire and cable industry is industrial foundation industry, and product is widely used in the energy, traffic, communication, automobile, petrochemical industry Equal fields, occupy extremely important status in Chinese national economy.In recent years, with the rapid development of our country's economy, electric wire Cable industries are also developed therewith, exist in the industry it is many denounce, the backwardness of production technology and technique, along with producing Quality it is not up to standard, certain obstruction is all formd to the development of domestic wires and cables industry, although China's wire and cable is raw Yield has risen to as the whole world, but there is also very big gaps with international market.

With the development of industrial automation instrument and control system, instrument cable completes communication in industrial production process, Service is provided for the transmission of data and voice signal, while playing the interconnection between electrical equipment and instrument；Common coaxial, In When by strong external world power, security performance is low to be easy to break and transmission performance is unstable, and it is special to be unable to satisfy at all Application requirements；In some outdoor special occasions, instrument cable needs directly laying and underground, is subject to mechanical damage, commonly Type instrument cable is difficult to meet the requirements, and the exploitation of anti-mechanical damage armored type instrument cable solves this from Cable Construction Design Technological deficiency.

Based on the above situation, the utility model proposes a kind of resistance to broken cable of instrument, problem above can effectively be solved.

Utility model content

The purpose of this utility model is to provide a kind of resistance to broken cables of instrument.The resistance to broken cable of the instrument of the utility model Structure is simple, easy to use, using inside and outside double jacket structures, the effectively tensile strength of solution raising cable；Inside and outside double sheaths it Between one layer of reinforcing layer structure is set, effectively improve the compression strength and tensile strength of cable, the mechanical performance of cable and use the longevity Life is improved.

The utility model is achieved through the following technical solutions: a kind of resistance to broken cable of instrument, the cable from the inside to the outside according to Secondary includes cable core, polyester belt, aluminium foil layer, inner sheath, reinforcing layer and oversheath, and the cable core is reinforced by two conductor groups and two The tangent twisted composition of core, each conductor group are all made of the tangent twisted composition pair of two conductors of one layer of inner insulating layer of outer cladding One layer of insulating outer layer is wrapped up in the outer surface of twisted wire, each twisted pair wire, and two strengthening cores are located at tangent two The two sides of twisted pair wire, piece drain wire of sandwiched between the polyester belt and aluminium foil layer.

A kind of resistance to broken cable of instrument provided by the utility model, the cable core is by two conductor groups and two strengthening core phases Twisted composition is cut, may make that wire stranding is closer in this way, generally conductive section is big, can effectively improve current-carrying capacity, reduces Transmission loss；Using inside and outside double jacket structures, the effectively tensile strength of solution raising cable；One layer is arranged between inside and outside double sheaths Reinforcing layer structure, effectively improves the resistance to compression and tensile strength of cable, and the mechanical performance and service life of cable are improved；Institute Piece drain wire of sandwiched between polyester belt and aluminium foil layer is stated, can reduce broken by lightning degree, to reduce the thunder and lightning for flowing into cable Stream, while the energy that fuel factor and mechanical effect generate on cable that is struck by lightning can be mitigated.

Preferably, the reinforcing layer is steel wire armor layer.

Reinforcing layer uses steel wire armor layer, with mechanical strengths such as the tension, the resistance to compressions that increase cable, improves erosion prevention, Have reached the purpose prolonged its service life.

Preferably, the conductor is twisted using thin copper free wire.

Conductor is tin plating using multiply or not tin plating copper free wire is twisted, and bending radius is small when laying, Yi Yidong.

Preferably, the material of the inner insulating layer and insulating outer layer is EP rubbers material.

Inner insulating layer and insulating outer layer are all made of EP rubbers material, and the resistance to ozone, heat-resisting, resistance to of insulating layer can be improved in this way The ageing-resistant performances such as time.

Preferably, the material of the inner sheath and oversheath is high-density polyethylene material.

Inner sheath and oversheath are all made of high-density polyethylene material, and the heat resistance, cold resistance, change of sheath can be improved in this way Learn stability, rigidity and toughness also with higher, mechanical strength.

The utility model compared with prior art, has the following advantages that and the utility model has the advantages that one kind provided by the utility model The resistance to broken cable of instrument, the cable core are made of tangent be twisted of two conductor groups and two strengthening cores, may make conducting wire to twist in this way Close closer, generally conductive section is big, can effectively improve current-carrying capacity, reduces transmission loss；Using inside and outside double jacket structures, The effectively tensile strength of solution raising cable；One layer of reinforcing layer structure is set between inside and outside double sheaths, effectively improves the anti-of cable Pressure and tensile strength, the mechanical performance and service life of cable are improved；Sandwiched between the polyester layer and aluminium foil layer A piece drain wire, can reduce broken by lightning degree, to reduce the lightning current for flowing into cable, while can mitigate lightning stroke in cable The energy that upper fuel factor and mechanical effect generate.

The reinforcing layer of the utility model uses steel wire armor layer, with mechanical strengths such as the tension, the resistance to compressions that increase cable, improves Erosion prevention has reached the purpose prolonged its service life.

The conductor of the utility model is tin plating using multiply or not tin plating copper free wire is twisted, bending radius when laying It is small, Yi Yidong.

The inner insulating layer and insulating outer layer of the utility model are all made of EP rubbers material, and the resistance to of insulating layer can be improved in this way The ageing-resistant performances such as ozone, heat-resisting, weather-proof.

The inner sheath and oversheath of the utility model are all made of high-density polyethylene material, and the heat-resisting of sheath can be improved in this way Property, cold resistance, chemical stability, rigidity and toughness also with higher, mechanical strength.

Detailed description of the invention

Fig. 1 is the cross section structure schematic diagram of the utility model；

In figure: 1- conductor；11- inner insulating layer；12- insulating outer layer；13- strengthening core；2- polyester belt；3- aluminium foil layer；In 4- Sheath；5- reinforcing layer；6- oversheath；7- drain wire.

Specific embodiment

In order to make those skilled in the art more fully understand the technical solution of the utility model, below with reference to specific implementation Example the preferred embodiment of the utility model is described, but it is to be understood that attached drawing only for illustration, Bu Nengli Solution is the limitation to this patent；In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, not Represent the size of actual product；To those skilled in the art, certain known features and its explanation may be omitted in attached drawing It will be understood by.Positional relationship is described in attached drawing only for illustration, should not be understood as the limitation to this patent.

(this is practical new for the technical characteristics such as polyester belt described in the utility model, aluminium foil layer, steel wire armor layer, drain wire Component units/element of type), unless otherwise specified, obtained from routine business approach, or be made in conventional manner, it is specific Structure, working principle and the control mode that may relate to, space layout mode use the conventional selection of this field, no It should be considered as where the innovative point of the utility model, to those skilled in the art, will be understood by, the utility model Patent is not done further specific expansion and is described in detail.

As shown in Figure 1, a kind of resistance to broken cable of instrument, the cable successively includes cable core, polyester belt 2, aluminium from the inside to the outside Layers of foil 3, inner sheath 4, reinforcing layer 5 and oversheath 6, the cable core is by two conductor groups and the tangent twisted structure of two strengthening cores 13 At each conductor group uses the tangent twisted composition twisted pair wire of two conductors 1 of one layer of inner insulating layer 11 of outer cladding, Mei Gesuo One layer of insulating outer layer 12 is wrapped up in the outer surface for stating twisted pair wire, and two strengthening cores 13 are located at two tangent twisted pair wires Two sides, piece drain wire 7 of sandwiched between the polyester belt 2 and aluminium foil layer 3.

Further, the reinforcing layer 5 be steel wire armor layer, prevent cable in laid processes or in operational process by The mechanical damage being likely encountered to ensure that sheath has integrality, and can bear certain external force.

Further, the conductor 1 is all made of thin copper free wire and is twisted, and the thin copper free wire of multiply is twisted, soft Toughness is strong, and bending resistance is higher.

Further, the material of the inner insulating layer 11 and insulating outer layer 12 is EP rubbers material, and EP rubbers is raw Production. art is simple, and cost is relatively low, and because its main chain is made of chemically stable saturated hydrocarbons, therefore its resistance to ozone, heat-resisting, weather-proof etc. are resistance to Ageing properties are excellent.

Further, the material of the inner sheath 4 and oversheath 6 is high-density polyethylene material, high density polyethylene (HDPE) Material is a kind of thermoplastic polyolefin generated by ethylene copolymer, has good heat resistance, cold resistance, chemical stability, also Rigidity with higher, toughness, mechanical strength.

Description and attached drawing, those skilled in the art according to the utility model are easily manufactured or using the utility model The resistance to broken cable of instrument, and good effect documented by the utility model can be generated.

Unless otherwise specified, in the utility model, if having term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", The orientation or positional relationship of instructions such as " circumferential directions " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description originally Utility model and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific Orientation construction and operation, therefore the term of orientation or positional relationship is described only for illustration in the utility model, no It can be understood as a limitation of this patent, it for the ordinary skill in the art, can be in conjunction with attached drawing, and according to specific feelings Condition understands the concrete meaning of above-mentioned term.

Unless otherwise clearly defined and limited, in the utility model, if there is term " setting ", " connected " and " connection " to answer It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be direct phase Even, the connection inside two elements can also be can be indirectly connected through an intermediary.For the ordinary skill people of this field For member, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.

The above is only the preferred embodiment of the utility model, not does limit in any form to the utility model System, any simple modification made by the above technical examples according to the technical essence of the present invention, equivalent variations, each falls within Within the protection scope of the utility model.

Claims (5)

1. a kind of resistance to broken cable of instrument, it is characterised in that: the cable successively includes cable core, polyester belt (2), aluminium from the inside to the outside Layers of foil (3), inner sheath (4), reinforcing layer (5) and oversheath (6), the cable core is by two conductor groups and two strengthening core (13) phases Twisted composition is cut, each conductor group uses two tangent twisted compositions of conductor (1) of one layer of inner insulating layer (11) of outer cladding One layer of insulating outer layer (12) is wrapped up in the outer surface of twisted pair wire, each twisted pair wire, and two strengthening cores (13) are located at The two sides of two tangent twisted pair wires, piece drain wire (7) of sandwiched between the polyester belt (2) and aluminium foil layer (3).

2. a kind of resistance to broken cable of instrument according to claim 1, it is characterised in that: the reinforcing layer (5) is steel wire armour Fill layer.

3. a kind of resistance to broken cable of instrument according to claim 1, it is characterised in that: the conductor (1) is all made of thin nothing Oxygen copper wire is twisted.

4. a kind of resistance to broken cable of instrument according to claim 1, it is characterised in that: the inner insulating layer (11) and insulation The material of outer layer (12) is EP rubbers material.

5. a kind of resistance to broken cable of instrument according to claim 1, it is characterised in that: the inner sheath (4) and oversheath (6) material is high-density polyethylene material.