CN204117674U - Divide the fire-resistant frequency-conversion power cable of phase conductor high flame retardant peculiar to vessel - Google Patents

Abstract

Divide the fire-resistant frequency-conversion power cable of phase conductor high flame retardant peculiar to vessel to belong to power cable technical field, particularly relate to a kind of point of fire-resistant frequency-conversion power cable of phase conductor high flame retardant peculiar to vessel.Point fire-resistant frequency-conversion power cable of phase conductor high flame retardant peculiar to vessel that the utility model provides a kind of fire-retardant, fire-resistant, shield effectiveness good.The utility model adopts following technical scheme, the utility model is made up of three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath, and its structural feature three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath are arranged from the inside to the outside successively.

Description

Divide the fire-resistant frequency-conversion power cable of phase conductor high flame retardant peculiar to vessel

Technical field

The utility model belongs to power cable technical field, particularly relates to a kind of point of fire-resistant frequency-conversion power cable of phase conductor high flame retardant peculiar to vessel.

Background technology

Along with the quickening of China's economic construction paces, electric power, petrochemical industry, shipbuilding, metallurgy, mine, railway are all being developed with surprising rapidity, the speed governing of conventional motors and control precision can not meet the demands far away, variable-frequency control technique is 21 century one of new industry application technology, the advantage that other governing systems a series of such as it has speed-regulating range width, adjusting speed accuracy is high, through-put power is stablized, high reliability, good energy-conserving effect can not be compared; Thus, the speed-adjusting and control system and various automation production flow line of the every field of modern industry progressively replace electromagnetic speed-adjusting or DC speed regulation mode and achieve and apply more and more widely.Therefore to the demand of variable-frequency motor also by increasing, Special cable of frequency-variable electric motor supporting with it also will be developed rapidly thereupon.And the development of Special cable of frequency-variable electric motor is in China, and just start-up time neither be very long, have partial cables manufacturer production at home at present, but can not meet the demand of society far away, such Special cable of frequency-variable electric motor must have vast potential for future development.Present low-voltage variable-frequency motor private cable technology full maturity, this product has obtained in fields such as shipbuilding, iron and steel, cement, weaving, intermetallic composite coating, food processings and has applied well, product adopts 3+3 structure or concentric conductor structure mostly, the shielding of this cable is also all that the outside after cable three phase line strandings completes, antijamming capability is general, anti-mutual interference effect particularly between three-phase core is poorer, practical effect is unsatisfactory, have impact on frequency-changing control system using and promoting on naval vessel.

Summary of the invention

The utility model is exactly for the problems referred to above, provides point fire-resistant frequency-conversion power cable of phase conductor high flame retardant peculiar to vessel that a kind of fire-retardant, fire-resistant, shield effectiveness is good.

For achieving the above object, the utility model adopts following technical scheme, the utility model is made up of three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath, and its structural feature three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath are arranged from the inside to the outside successively.

As a kind of preferred version, every root core of three-phase conductor wire core described in the utility model is followed successively by circular twisted copper conductors, cross-linking type semicrystalline polyolefin conduction internal shield, crosslinked polyetylene insulated layer, cross-linking type semiconductive polyolefine as external shielding layer from inside to outside.

As another kind of preferred version, described in the utility model point of phase conductor is multiple copper wire winding bodies, and each copper wire winding body is uniform around every root core, and outside every root core, the outside of each copper wire winding body is enclosed with copper strips reinforced layer.

As another kind of preferred version, fire-resistant separator described in the utility model is made up of inner side low smoke halogen-free flame-retardant polyolefin belting layer and outside Ceramic silicon rubber layer, fire-resistant separator and between described copper strips reinforced layer and copper strips reinforced layer, be filled with low smoke halogen-free flame-retardant polyolefin packing between copper strips reinforced layer and copper strips reinforced layer.

Secondly, copper wire copper strip shielding layer described in the utility model comprises multiple tinned copper wire braiding cylinder, and each tinned copper wire braiding cylinder is distributed on outside fire-resistant separator, wraps up copper strips outside each tinned copper wire braiding cylinder.

In addition, fire retardant polyolefin oversheath described in the utility model adopts the low-smoke and halogen-free flame retardant polyolefin jacket of oil resistant.

The utility model beneficial effect.

The utility model three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath are arranged from the inside to the outside successively; Shield effectiveness is good, anti-electromagnetic interference capability is strong, fire-retardant, fire-resistant, environmental protection, structural strength are high.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described further.The utility model protection range is not only confined to the statement of following content.

Fig. 1 is the utility model structural representation.

In figure, the circular twisted copper conductors of 1-; 2-cross-linking type semicrystalline polyolefin conduction internal shield; The crosslinked polyetylene insulated layer of 3-; 4-cross-linking type semiconductive polyolefine as external shielding layer; 5-copper wire winding body; 6-copper strips reinforced layer; 7-low smoke halogen-free flame-retardant polyolefin packing; 8-low smoke halogen-free flame-retardant polyolefin belting layer; 9-Ceramic silicon rubber layer; 10-tinned copper wire braiding cylinder; 11-copper strips; 12-fire retardant polyolefin oversheath.

Embodiment

As shown in the figure, the utility model is made up of three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath, and its structural feature three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath are arranged from the inside to the outside successively.

Every root core of described three-phase conductor wire core is followed successively by circular twisted copper conductors, cross-linking type semicrystalline polyolefin conduction internal shield, crosslinked polyetylene insulated layer, cross-linking type semiconductive polyolefine as external shielding layer from inside to outside.Cross-linking type semicrystalline polyolefin conduction internal shield 2 can be extruded outside conductor, outside crosslinked polyetylene insulated layer, extrude cross-linking type semiconductive polyolefine as external shielding layer 4, three layers of mode simultaneously extruded can be adopted.

Described point of phase conductor is multiple copper wire winding bodies, and each copper wire winding body is uniform around every root core, and outside every root core, the outside of each copper wire winding body is enclosed with copper strips reinforced layer.Divide phase conductor; at the outer phase-splitting earthing conductor (ground wire) being wound around the wrapped composition of additional copper strips by copper wire of cross-linking type semiconductive polyolefine as external shielding layer; both the effect of every root insulated wire cores phase-splitting shielding had been served; can be used as again the passage of short circuit current, the protective effect of neutral core (ground wire) can be played.

Described fire-resistant separator is made up of inner side low smoke halogen-free flame-retardant polyolefin belting layer and outside Ceramic silicon rubber layer, fire-resistant separator and between described copper strips reinforced layer and copper strips reinforced layer, be filled with low smoke halogen-free flame-retardant polyolefin packing between copper strips reinforced layer and copper strips reinforced layer.Refractory insulating layer, outside after three cable core strandings extrudes one deck Ceramic silicon rubber and forms fire-resistant separator 9, it can stop flame internally to burn, also reducing temperature that cable bears simultaneously within the allowed band of insulating material, ensure that the insulation electrical performance of cable when burning.

Described copper wire copper strip shielding layer comprises multiple tinned copper wire braiding cylinder, and each tinned copper wire braiding cylinder is distributed on outside fire-resistant separator, wraps up copper strips outside each tinned copper wire braiding cylinder.Adopt in the outside of refractory insulating layer high density Tinplated copper alloy silk braid shielded to add the comprehensive double shield of the wrapped shielding of copper strips, further enhance the effect suppressing electromagnetic interference, also can greatly strengthen simultaneously cable install and bending time pulling force.

Described fire retardant polyolefin oversheath adopts the low-smoke and halogen-free flame retardant polyolefin jacket of oil resistant.Can adopt the form extruded that the low-smoke and halogen-free flame retardant polyolefin jacket of oil resistant is set outside copper wire copper strip shielding layer, make cable be more suitable for the place of greasy dirt.

The utility model packing, belting layer, oversheath all adopt low smoke halogen-free flame-retardant polyolefin, when breaking out of fire, the halogen acid gas burst size that can ensure burns produces is little, smoke density is low, maximum minimizing fire is to the injury of personnel and equipment, owing to adopting resistant environmental low-smoke halogen-free flame polyolefine material, effectively reduce product to the impact of environment.

Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection range of the present utility model as long as meet.

Claims (6)

1. divide the fire-resistant frequency-conversion power cable of phase conductor high flame retardant peculiar to vessel, be made up of three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath, it is characterized in that three-phase conductor wire core, point phase conductor, fire-resistant separator, copper wire copper strip shielding layer, fire retardant polyolefin oversheath are arranged from the inside to the outside successively.

2. divide phase conductor high flame retardant peculiar to vessel fire-resistant frequency-conversion power cable according to claim 1, it is characterized in that every root core of described three-phase conductor wire core is followed successively by circular twisted copper conductors, cross-linking type semicrystalline polyolefin conduction internal shield, crosslinked polyetylene insulated layer, cross-linking type semiconductive polyolefine as external shielding layer from inside to outside.

3. divide phase conductor high flame retardant peculiar to vessel fire-resistant frequency-conversion power cable according to claim 2, it is characterized in that a described point phase conductor is multiple copper wire winding bodies, each copper wire winding body is uniform around every root core, and outside every root core, the outside of each copper wire winding body is enclosed with copper strips reinforced layer.

4. divide phase conductor high flame retardant peculiar to vessel fire-resistant frequency-conversion power cable according to claim 3, it is characterized in that described fire-resistant separator is made up of inner side low smoke halogen-free flame-retardant polyolefin belting layer and outside Ceramic silicon rubber layer, fire-resistant separator and between described copper strips reinforced layer and copper strips reinforced layer, be filled with low smoke halogen-free flame-retardant polyolefin packing between copper strips reinforced layer and copper strips reinforced layer.

5. divide phase conductor high flame retardant peculiar to vessel fire-resistant frequency-conversion power cable according to claim 4, it is characterized in that described copper wire copper strip shielding layer comprises multiple tinned copper wire braiding cylinder, each tinned copper wire braiding cylinder is distributed on outside fire-resistant separator, wraps up copper strips outside each tinned copper wire braiding cylinder.

6. divide phase conductor high flame retardant peculiar to vessel fire-resistant frequency-conversion power cable according to claim 5, it is characterized in that described fire retardant polyolefin oversheath adopts the low-smoke and halogen-free flame retardant polyolefin jacket of oil resistant.