CN210443313U

CN210443313U - Fire-resistant armored cable

Info

Publication number: CN210443313U
Application number: CN201921685088.XU
Authority: CN
Inventors: 臧文丙; 孟卫国; 郭汉超
Original assignee: Guangdong Jinke Cable Industry Co Ltd
Current assignee: Guangdong Jinke Cable Industry Co Ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-05-01
Anticipated expiration: 2029-10-09

Abstract

The utility model relates to a power transmission technical field discloses a fire-resistant armoured cable, include outer inoxidizing coating, interior inoxidizing coating and the inner core that sets up from outer to interior, the inner core contains many electrically conductive aluminium cores, be equipped with a fossil fragments in the interior inoxidizing coating, set up the draw-in groove that supplies electrically conductive aluminium core card to go into on the fossil fragments, electrically conductive aluminium core cross-section is circular, and its internal tangent in the synthetic interior angle is enclosed to fossil fragments cross-section straight flange. The utility model has the advantages of it is following and effect: this scheme utilization utilizes the draw-in groove on the fossil fragments and the protection to electrically conductive aluminium core has been realized in the joint cooperation between the electrically conductive aluminium core, and the shape design of fossil fragments has effectively avoided the direct transmission of external force to electrically conductive aluminium core in, has also avoided the heat direct action to electrically conductive aluminium core on to the fire resistance and the compressive capacity of electrically conductive aluminium core and cable have been improved.

Description

Fire-resistant armored cable

Technical Field

The utility model relates to a power transmission technical field, in particular to fire-resistant armoured cable.

Background

Cables, typically rope-like cables, are formed by stranding several or several groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation. The cable may be classified into a power cable, a communication cable, a control cable, and the like according to its use. Compared with an overhead line, the cable has the advantages of small insulating distance between lines, small occupied space, no occupation of space above the ground due to underground laying, no influence of pollution of the surrounding environment, high power transmission reliability, and small interference on personal safety and the surrounding environment. But the cost is high, the construction and the maintenance are troublesome, and the manufacture is complicated. Therefore, the cable is mostly applied to dense areas of population and power grids and places with heavy traffic; when the cable is laid in the river, the river and the seabed, the use of large-span overhead lines can be avoided. Cables may also be used where it is desirable to avoid interference of overhead lines with communications and where aesthetic considerations or exposure to objects are desired.

Fire-resistant cables and flame-retardant cables are cables frequently used in various projects, and are widely applied due to good fire resistance. However, the existing fire-resistant cable generally has flexibility as a main part, and the pressure resistance of the cable needs to be improved, so that a fire-resistant armored cable with good fire resistance and pressure resistance is urgently needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a fire-resistant armoured cable has good fire resistance and compressive capacity.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a fire-resistant armoured cable, includes outer inoxidizing coating, interior inoxidizing coating and the inner core that sets up from outer to interior, the inner core contains many electrically conductive aluminium cores, be equipped with a fossil fragments in the interior inoxidizing coating, set up the draw-in groove that supplies electrically conductive aluminium core card to go into on the fossil fragments, electrically conductive aluminium core cross-section is circular, and its internal tangent in the synthetic interior angle is enclosed to fossil fragments cross-section straight flange.

Through adopting above-mentioned technical scheme, utilize the joint cooperation between draw-in groove on the fossil fragments and the electrically conductive aluminium core to realize the protection to the electrically conductive aluminium core, and the shape design of fossil fragments has effectively avoided external force direct transfer to the electrically conductive aluminium core in, has also avoided heat direct action to the electrically conductive aluminium core to the fire resistance and the compressive capacity of electrically conductive aluminium core and cable have been improved.

The utility model discloses further set up to, it has a plurality of filling blocks of being made by vulcanized rubber to fill between interior inoxidizing coating and the inner core.

By adopting the technical scheme, the filling block made of vulcanized rubber has good elasticity and toughness, and the pressure resistance of the cable is further enhanced by filling the filling block between the inner protective layer and the inner core.

The utility model discloses further set up to, interior inoxidizing coating is formed by the one deck rubber coiled material is crooked, just interior inoxidizing coating both sides integrated into one piece respectively are equipped with left connecting portion and the right connecting portion that can splice each other, integrated into one piece is equipped with the multichannel arch on the connecting portion of the right side, the confession has been seted up on the connecting portion of a left side the recess that protruding card was gone into.

Through adopting above-mentioned technical scheme, utilize the cooperation of arch and recess to realize that left connecting portion and right connecting portion are direct can dismantle the link to this electrically conductive aluminium core of damage in the operating personnel in with the inner core takes out, remains the electrically conductive aluminium core that does not damage, thereby reduces extravagantly, reduces the maintenance cost.

The utility model is further arranged that the cross section of the bulge is arc-shaped, and the radian is in the range of 180-270 degrees; the cross section of the groove is semicircular.

Through adopting above-mentioned technical scheme, the design of protruding shape has increased the firm degree between arch and the recess.

The utility model discloses further set up to, outer inoxidizing coating is made by vulcanized rubber.

By adopting the technical scheme, the outer protective layer is made of vulcanized rubber, so that the pressure resistance of the cable is further enhanced.

The utility model discloses further set up to, the cladding of interior inoxidizing coating outside has the water proof membrane, the water proof membrane lateral wall supports tightly with outer inoxidizing coating inside wall.

Through adopting above-mentioned technical scheme, the setting of waterproof membrane has improved the sealing performance and the waterproof performance of cable.

The utility model discloses further set up as, be stained with fire-resistant sand on the water proof membrane.

Through adopting above-mentioned technical scheme, fire-resistant sand has good heat conductivility, and it can be with heat fast transfer to the point of being heated periphery to the fire-resistant ability of cable has further been improved.

To sum up, the utility model discloses a beneficial technological effect does:

1. the scheme realizes the protection of the conductive aluminum core by utilizing the clamping matching between the clamping groove on the keel and the conductive aluminum core, and improves the fire resistance and the pressure resistance of the conductive aluminum core and the cable;

2. according to the scheme, the waterproof film and the fire-resistant sand are utilized to improve the waterproof performance and the fire-resistant capability of the cable;

3. the protruding cooperation of this scheme utilization and recess has realized the direct removable interlinkage of left connecting portion and right connecting portion to this operating personnel takes out the electrically conductive aluminium core of the damage in the inner core, remains the electrically conductive aluminium core that does not damage, thereby reduces extravagantly, reduces the maintenance cost.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is an enlarged schematic view at a in fig. 1.

Reference numerals: 1. an outer protective layer; 11. a water-resistant film; 2. an inner protective layer; 21. a left connecting portion; 211. a groove; 22. a right connecting portion; 221. a protrusion; 23. filling blocks; 3. an inner core; 4. a keel; 41. a clamping groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the fire-resistant armored cable comprises an outer protective layer 1, an inner protective layer 2 and an inner core 3 which are arranged from outside to inside, wherein the outer protective layer 1 is made of vulcanized rubber and has good elasticity and toughness; the inner protective layer 2 is formed by bending a layer of rubber coiled material and also has good elasticity and toughness. The inner core 3 consists of a plurality of conductive aluminum cores and keels 4, the conductive aluminum cores play a role in conducting electricity, and the cross sections of the conductive aluminum cores are circular; the keel 4 is provided with a clamping groove 41 for clamping the conductive aluminum core, and when the conductive aluminum core is clamped with the clamping groove 41, the conductive aluminum core is internally tangent to the inner angle formed by the straight edges of the cross section of the keel 4. The design of fossil fragments 4 and electrically conductive aluminium core shape has effectively avoided external force direct transfer to electrically conductive aluminium core in, has also avoided heat direct action to electrically conductive aluminium core on to the fire resistance and the compressive capacity of electrically conductive aluminium core and cable have been improved.

A plurality of filling blocks 23 are filled between the inner protective layer 2 and the inner core 3, the filling blocks 23 are made of vulcanized rubber, and have good elasticity and toughness, and the filling blocks 23 are sequentially spliced and surround the outer side of the keel 4 to protect the keel 4 and further enhance the pressure resistance of the cable.

As shown in fig. 1 and 2, a left connecting portion 21 and a right connecting portion 22 are respectively disposed on two sides of the inner protective layer 2, the left connecting portion 21 and the right connecting portion 22 are integrally formed with the inner protective layer 2, and the left connecting portion 21 and the right connecting portion 22 can be spliced together. A plurality of protrusions 221 are integrally formed on the right connecting part 22, the cross section of each protrusion 221 is arc-shaped, and the radian is in the range of 180-270 degrees; the left connecting portion 21 is provided with a groove 211 for the protrusion 221 to be inserted into, and the cross section of the groove 211 is semicircular. The protruding 221 of this scheme utilization and the cooperation of recess 211 have realized that left connecting portion 21 and right connecting portion 22 are direct can dismantle and have linked to this operating personnel takes out the electrically conductive aluminium core of the damage in the inner core 3, remains the electrically conductive aluminium core that does not damage, thereby reduces extravagantly, reduces the maintenance cost.

As shown in fig. 1, the outer side of the inner protective layer 2 is coated with a waterproof film 11, in this embodiment, the waterproof film 11 is formed by pressing a polyvinyl chloride polymer material, so that the waterproof performance is good, moisture can be effectively prevented from entering the cable, the occurrence of a leakage phenomenon is avoided, and the use safety of the electric wire is improved.

Fire-resistant sand is adhered to the surface of the outer side of the waterproof membrane 11, has excellent heat conducting performance and can quickly transfer heat to the periphery of a heated point, so that the fire resistance of the cable is further improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a fire-resistant armoured cable, includes outer inoxidizing coating (1), interior inoxidizing coating (2) and inner core (3) by outer to interior setting, inner core (3) contain many electrically conductive aluminium cores, characterized by: be equipped with a fossil fragments (4) in interior inoxidizing coating (2), set up draw-in groove (41) that supply electrically conductive aluminium core card to go into on fossil fragments (4), electrically conductive aluminium core cross-section is circular, and its internal cutting in fossil fragments (4) cross-section straight flange encloses in synthetic interior angle.

2. The fire resistant armored cable of claim 1, wherein: a plurality of filling blocks (23) made of vulcanized rubber are filled between the inner protective layer (2) and the inner core (3).

3. The fire resistant armored cable of claim 1, wherein: interior inoxidizing coating (2) are formed by the one deck rubber coiled material is crooked, just interior inoxidizing coating (2) both sides integrated into one piece respectively are equipped with left connecting portion (21) and right connecting portion (22) that can splice each other, integrated into one piece is equipped with multichannel arch (221) on right side connecting portion (22), offer the confession on left side connecting portion (21) recess (211) that protruding (221) card was gone into.

4. The fire resistant armored cable of claim 3, wherein: the section of the bulge (221) is arc-shaped, and the radian is in the range of 180-270 degrees; the cross section of the groove (211) is semicircular.

5. The fire resistant armored cable of claim 1, wherein: the outer protective layer (1) is made of vulcanized rubber.

6. The fire resistant armored cable of claim 1, wherein: the outer side of the inner protective layer (2) is coated with a waterproof film (11), and the outer side wall of the waterproof film (11) is tightly abutted to the inner side wall of the outer protective layer (1).

7. The fire resistant armored cable of claim 6, wherein: and fire-resistant sand is adhered to the waterproof membrane (11).