CN202549451U

CN202549451U - Variable-frequency cable

Info

Publication number: CN202549451U
Application number: CN2012201289104U
Authority: CN
Inventors: 宋青林; 张伯其; 张�杰
Original assignee: WUXI CITY YUANDENG CABLE CO Ltd
Current assignee: WUXI CITY YUANDENG CABLE CO Ltd
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2012-11-21
Anticipated expiration: 2022-03-30

Abstract

The utility model discloses a variable-frequency cable. The variable-frequency cable has a cable core in the middle, wherein the cable core comprises three main insulated wire cores and three neutral wire cores; an optical unit is arranged in the middle of the cable core or at a gap between the main insulated wire cores and the neutral wire cores; and a metal shielding layer, a longitudinally wrapped aluminum-plastic composite layer, an isolating sleeve, an armored layer and an outer sheath are sequentially arranged outside the cable core. The variable-frequency cable provided by the utility model enhances functions of the conventional variable-frequency cable, so that the variable-frequency cable provided by the utility model has functions of alarming, temperature measurement, state monitoring, frequency feedback, signal transmission and the like; through the adoption of a fully-closed novel water-proof structure, the variable-frequency cable is fully water-proof and has a corrosion-resistant function; and special requirements of severe conditions and modern high-frequency motors and variable-frequency electrical appliances on the variable-frequency cable are met.

Description

Frequency-changing cable

Technical field

The utility model relates to a kind of cable, specifically is a kind of improvement of frequency-changing cable.

Background technology

As everyone knows; Conventional frequency-changing cable is outside three insulated and three zero line cores, to set gradually lapping layer, metal screen layer and outer jacket formation; Form the 3+3 structure; Make cable have stronger proof voltage impact, the pulse voltage in the time of standing at a high speed frequently frequency conversion has good protective action to frequency converter; Yet along with industrial development and growth in the living standard; Variable-frequency motor, appliance applications be to every field that relates to national economy and corner, and conventional frequency-changing cable can not satisfy the particular field demand under the severe environmental conditions in one's power, and its single function also can't satisfy intelligentized development has functions such as monitoring, feedback information, signal transmission to it demand simultaneously.

At present; The cables manufacturing enterprise that has improves the problems referred to above; As disclosing a kind of frequency-changing cable with high temperature resistant function in the Chinese patent " a kind of high temperature high voltage resistant frequency-changing cable " (publication number 202134267U, open day 2012 month February 1), but it has been ignored extremely moist even have in the environment that moisture exists; Hydrone is to invasion, the destruction of frequency-changing cable, thus influence with can't guarantee the useful life of cable and the safety of equipment.And Chinese patent " frequency-changing cable " (publication number 201622866U; Open day on November 3rd, 2010) a kind of sheath that utilizes silastic material as cable is disclosed in; Its essence also is to have improved merely under the hot environment externally the protection of cable, still can't satisfy the needs on the aforesaid function.At Chinese patent " frequency-changing cable " (publication number 101635179; Open day on January 27th, 2010) disclose in the screen of this cable and comprised aluminium foil layer; Played waterproof action to a certain extent, had but it has been ignored under the situation that moisture immerses, aluminium foil can very fast oxidation; At this moment to the damaging influence of cable self considerably beyond its defencive function; All do not consider the improvement of frequency-changing cable on the side signal transmission surface function through retrieval discovery Chinese patent simultaneously, all inequality has functions such as good on-line monitoring, feedback information and signal transmission, and nature can't satisfy the new period and following to the demand on the frequency-changing cable function.

The utility model content

The purpose of the utility model is to overcome the deficiency of above-mentioned prior art, provides a kind of water resistance good, increases the Optical Fiber Composite water proof type frequency-changing cable of functions such as warning, temperature survey, status monitoring, frequency feedback, signal transmission simultaneously.

The described a kind of frequency-changing cable of the utility model; In the middle of this cable is cable core, and said cable core comprises three main insulation cores and three zero line cores, and place, slit middle at cable core or main insulation core and zero line core is provided with the light unit; Cable core sets gradually metal screen layer outward; Vertical alclad is moulded composite bed, separation sleeve, armour and oversheath.

Said main insulation core comprises the master core conductor, outside the master core conductor, sets gradually master core insulating barrier, master core metal screen layer.

Said zero line core comprises the zero line core conductor, outside the zero line core conductor, sets gradually zero line core insulation layer, zero line core metal screen.

Said smooth unit comprises monomode fiber and multimode fiber.

The beneficial effect of the utility model:

Greatly strengthened the function of conventional frequency-changing cable; Make it have functions such as warning, temperature survey, status monitoring, frequency feedback, signal transmission; And totally enclosed new-type waterproof construction fully has corrosion-resistant function again in the waterproof, satisfies reaching modern high-frequency electric machines and the requirement specific to frequency-changing cable of frequency conversion electrical equipment mal-condition under.Remove and to be used for normal frequency conversion electrical equipment and to connect, also can be used for having waterproof requirement with or frequency conversion electrical equipment had the specific function of intelligent monitoring requirement, played important auxiliaryly and support the effect that promotes for development of new electrical equipment, intelligent electric appliance, meaning is very big.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Embodiment:

Like Fig. 1, the frequency-changing cable of the utility model, the centre is a cable core; Cable core comprises three main insulation cores and three zero line cores; Wherein, the main insulation core comprises master core conductor 1, outside master core conductor 1, sets gradually master core insulating barrier 2, master core metal screen layer 3.The zero line core comprises zero line core conductor 4, outside zero line core conductor 4, sets gradually zero line core insulation layer 5, zero line core metal screen 6.Place, slit middle at cable core or main insulation core and zero line core is provided with light unit 12, and cable core sets gradually metal screen layer 7 outward, and vertical alclad is moulded composite bed 8, separation sleeve 9, armour 10 and oversheath 11.

The utility model is divided into three parts with the ground core of conventional electric power cable, and extruded insulation layer respectively is provided with stranding after the metal screen layer formation split screen structure respectively with three zero line cores of three main insulation cores and fractionation; During stranding with the core space at three main insulation cores placed apart, three ground; Need prefabricated in advance light unit be placed on the stranding center simultaneously, continue to be provided with metal level outside the cable core behind stranding, constitute total screen structure; Vertical then alclad is moulded composite bed; Constitute totally-enclosed waterproof construction, should outside the plastic-aluminum watertight composition, extrude separation sleeve, extrude the oversheath of waterproof behind the armouring with water-proof function like the need armouring.

The insulating material of main insulation core and zero line core can be polyvinyl chloride, polyethylene, crosslinked polyethylene, fluoroplastics, silicon rubber, ethylene-propylene diene copolymer, natural rubber, elastomer or the like;

That metal screen layer comprises is wrapped, braiding, dredge around structures such as, vertical bags; Material comprises copper strips, aluminium strip, alloy band, copper wire, tinned copper wire, copper sheathing, aluminium cover, plumbous cover or the like; Split screen can design according to the concrete needs of using system with total screen and place split screen or total screen, or split screen is placed with total screen.

The light unit comprises monomode fiber and multimode fiber; The protective layer of light unit can be a matrix type; It also can be stainless steel tube; Can be the aluminum pipe structure also, cause the external diameter of cable to increase the genus normal phenomenon after the placement, the optical fiber specifications and models can be carried out supporting design according to the concrete needs of line design.The light unit also can be placed on other gaps according to the concrete condition of producing and design in the cable core center, as long as it is not caused extruding, satisfies crooked requirement simultaneously, and can guarantee that the stranding rounding of cable gets final product.

Plastic-aluminum combined layer can be a single face, and is also two-sided, but when using single face, should be with PE composite bed one side in the cable core outside, promptly towards the sheath end.Restrictive coating comprises polyvinyl chloride, polyethylene, elastomer, haloflex, silicon rubber, fluoroplastics or the like.

The concrete application approach of the utility model is a lot; The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement, these improve the protection range that also should be regarded as the utility model.

Claims

1. a frequency-changing cable is characterized in that, is cable core in the middle of this cable; Said cable core comprises three main insulation cores and three zero line cores; Place, slit middle at cable core or main insulation core and zero line core is provided with light unit (12), and cable core sets gradually metal screen layer (7) outward, and vertical alclad is moulded composite bed (8); Separation sleeve (9), armour (10) and oversheath (11).

2. frequency-changing cable according to claim 1 is characterized in that, said main insulation core comprises master core conductor (1), outside master core conductor (1), sets gradually master core insulating barrier (2), master core metal screen layer (3).

3. frequency-changing cable according to claim 1 and 2 is characterized in that, said zero line core comprises zero line core conductor (4), outside zero line core conductor (4), sets gradually zero line core insulation layer (5), zero line core metal screen (6).

4. frequency-changing cable according to claim 1 and 2 is characterized in that, said smooth unit comprises monomode fiber and multimode fiber.