CN216928146U

CN216928146U - High security is fireproof cable subassembly for building engineering

Info

Publication number: CN216928146U
Application number: CN202123084935.7U
Authority: CN
Inventors: 沈小平; 曹朝硕; 王先革; 郑长亮; 戴伟斌; 戴杰; 贾卫楠
Original assignee: Tongding Interconnection Information Co Ltd
Current assignee: Tongding Interconnection Information Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-07-08
Anticipated expiration: 2031-12-09

Abstract

The invention provides a high-safety fireproof cable assembly for constructional engineering, which comprises a protective sleeve with a plurality of pipe bodies arranged side by side, wherein two adjacent pipe bodies are connected through a connecting rib; the cable body comprises a conductor, and a fire-resistant structure and an insulating structure which are sequentially coated on the outer side of the conductor; the fire-resistant structure comprises a fire-resistant mica tape layer wrapped on the outer side of the conductor. The width and the thickness of the connecting ribs are both 2 mm. The cable assembly is compact in structure, small in occupied space, easy to construct, high in fire resistance, long in service life, excellent in performance and high in reliability.

Description

High security is fireproof cable subassembly for building engineering

Technical Field

The invention belongs to the technical field of electric wires and cables, and particularly relates to a high-safety fireproof cable assembly for construction engineering.

Background

Along with the rapid development of economy in China, the urban modernization process is obviously accelerated, when the urban modernization process reaches high-grade square office buildings and when the urban modernization process reaches home decoration, all electrical equipment can not be powered and connected with a power supply wire, and the traditional wires are the 2 nd part of a polyvinyl chloride insulated cable wire and a flexible wire according to JB/T8734.2-2016 & rated voltage 450750V and the following: cable and wire for fixed wiring, GB/T5023.3-2008 rated voltage 450/750V and the following 3 rd part of polyvinyl chloride insulated cable: fixed wiring is with no sheath cable these two industry standards, national standard production manufacturing, but the electric wire that these two kinds of standards were produced all is based on the structure and the performance production design of itself, for the convenience of later maintenance line change, all need cooperate the sleeve pipe to use when actual fitment and power supply to reach the purpose to cable formation protection, promotion cable life and safety in utilization. The sleeve pipe commonly used is mostly the PVC material, lays comparatively difficultly, and in-service use and maintenance process, because operating mode environment limits, the equal comparative difficulty of secondary threading, and the cable is taken out and is penetrated the easy jamming of process, and the operation is wasted time and energy. Accordingly, there is a need for improvements to existing cables for building decoration.

Disclosure of Invention

In view of this, the present invention provides a high-safety fireproof cable assembly for construction engineering, which aims to overcome the defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a high-safety fireproof cable assembly for constructional engineering comprises a protective sleeve with a plurality of pipe bodies arranged side by side, wherein two adjacent pipe bodies are connected through a connecting rib; the cable body comprises a conductor, and a fire-resistant structure and an insulating structure which are sequentially coated on the outer side of the conductor; the fire-resistant structure comprises a fire-resistant mica tape layer wrapped on the outer side of the conductor.

Further, the insulation structure comprises a 105 ℃ flexible polyvinyl chloride insulation layer.

Furthermore, the width and the thickness of the connecting ribs are both 2 mm.

Furthermore, two side faces of each connecting rib in the thickness direction are respectively provided with a V-shaped groove, and the V-shaped grooves on the two sides are arranged in a staggered mode.

Further, the conductor adopts copper monofilaments with the purity of not less than 99.999%.

Furthermore, fillet transition is adopted at the joint position of the connecting rib and the pipe body.

Compared with the prior art, the invention has the following advantages:

the cable assembly is compact in structure, small in occupied space, easy to construct, high in fire resistance and long in service life. It is applicable in the fire resisting cable body that will supply power together pre-buried wall body with outside protecting pipe in the stage of the construction of building decoration bricklayer, or arrange in the furred ceiling, performance is good, and the reliability is high.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a V-shaped groove formed on a connecting rib according to an embodiment of the present invention;

FIG. 3 is a schematic view of an embodiment of the present invention with expansion slots;

FIG. 4 is an enlarged view of the structure of FIG. 3 at A;

FIG. 5 is a schematic view of a tubular body with a wiper member mounted thereon according to an embodiment of the present invention;

fig. 6 is a schematic view of a scraping member in an inventive embodiment of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

The utility model provides a high security is fireproof cable subassembly for building engineering, as shown in fig. 1 to 4, including having the protecting pipe 1 that arranges several body 2 side by side, connect through even muscle 3 between two adjacent bodies, all wear to be equipped with cable body 4 in each body, and leave clearance 5 between cable body outer fringe and body inner wall. During actual production, make the cable body earlier, later in the cable body outside crowded package that produces has the sheath pipe of even muscle, the internal diameter of each body should be a bit more than the cable body external diameter in the sheath pipe, the cable body of being convenient for is directly taken out at the later maintenance in-process, and multicore cable subassembly can once be under construction to such production mode, can the level place in the building decoration in-process also place perpendicularly in the ditch inslot of settlement, makes buried wire more convenient. Of course, the cable body and the sheath tube may be produced separately and then assembled by threading.

The cable body comprises a conductor 6, and a fire-resistant structure 7 and an insulating structure 8 which are sequentially coated on the outer side of the conductor from inside to outside. The insulation structure comprises a 105 ℃ flexible polyvinyl chloride insulation layer. The voltage-resistant insulating performance of the cable is guaranteed, and meanwhile, the risk that the electric wire is damaged by external machinery can be effectively reduced. The conductor adopts copper monofilament with purity not less than 99.999%. By way of example, the copper monofilament used as the conductor is made of 8.0mm diameter annealed round copper rod, red copper series with purity not less than 99.999%, and is drawn to the corresponding specification by a continuous drawing and continuous annealing copper large wire drawing machine.

The fire-resistant structure comprises a fire-resistant mica tape layer wrapped on the outer side of the conductor. During specific production, the fireproof mica tapes with high temperature resistance of more than 950 ℃ can be lapped and wound outside the drawn copper conductor in an overlapping mode, when insulation is softened or melted due to external high temperature under the condition of fire, the fireproof mica tapes can well prevent flame from the outside, can play an insulating role at the same time, compensate the loss function of an insulating structure on the outer side, and guarantee that the electric wire continues to stably supply power.

In an optional embodiment, the fire-resistant structure comprises two layers of fire-resistant mica tapes and a shielding layer between the two layers of fire-resistant mica tapes, namely, the exterior of the conductor is wrapped with one layer of fire-resistant mica tape and then directly wrapped with the shielding layer, and then the conductor is wrapped with one layer of fire-resistant mica tape. In addition, the inner layer of fire-resistant mica tape and the outer layer of fire-resistant mica tape form good protection to the shielding layer, the shielding performance is guaranteed to be reliable, flame cannot overflow from the fire-resistant structure when the fire is on the inside, flame cannot permeate into the inner side of the fire-resistant structure when the fire is on the outside, and the excellent protection effect is achieved.

For example, the width and thickness of the connecting rib are both 2 mm. Preferably, the joint position of the connecting rib and the pipe body adopts fillet 10 transition, so that stress concentration at the joint is avoided.

In a further improved scheme, two side surfaces of each connecting rib in the thickness direction are respectively provided with a V-shaped groove 9, and the V-shaped grooves on the two sides are arranged in a staggered mode. The designed V-shaped groove is very convenient for stripping off redundant components during laying of the fireproof cable, and the operation is simple and labor-saving. For example, one or more pipes (and cables inside) can be stripped off as needed during wiring to meet the actual use requirements. Because the V-shaped grooves on the two sides of the connecting rib are arranged in a staggered mode, namely the V-shaped grooves on the two sides of the connecting rib are not symmetrical, the condition that the cable connecting rib is accidentally broken due to stress in the laying and using processes can be effectively avoided, the using performance is guaranteed, and meanwhile the using reliability is effectively improved.

In an alternative embodiment, an expansion groove 11 is formed in the inner wall of the pipe body at a position corresponding to the connecting rib, the cross section of the expansion groove is Y-shaped and comprises a V-shaped opening part 12 and a type-I transverse groove part 13, the type-I transverse groove part extends to the connecting rib part, and the tail end of the type-I transverse groove part is closed by a circular arc structure 14 to avoid stress concentration. Due to the design of the expansion groove, the diameter of the pipe body can be effectively reduced, only the inner diameter of the pipe body is slightly larger than the outer diameter of the cable body, when the cable is worn to be arranged, the inner diameter of the pipe body can be adaptively changed due to self expansion of the expansion groove, the cable body is further ensured to be worn to be arranged more smoothly, after the cable body is smoothly smoothed by penetrating the cable body, the expansion groove can be contracted and restored to an original state, and the adaptability is better. Usually, the cross-sectional area of the cable body accounts for more than 75% of the cross-sectional area of the inner cavity of the tube body, and if necessary, the cross-sectional area of the gap can only account for about 5% of the cross-sectional area of the inner cavity of the tube body, so that the overall occupied space of a cable assembly can be effectively reduced while the heat dissipation performance of the cable is ensured, the limitation of laying the cable is easier, and the limitation is smaller.

In the scheme of setting up the expansion groove, as a further improved scheme, as shown in fig. 5 and fig. 6, when the cable body is worn to establish for the second time, can plug in the scraper 15 that has the function of scraping the cable body surface at the body inlet wire end, that is, this cable assembly protective sheath end detachably installs the scraper.

Specifically, the scraping part can include the brush hair 17 of seat circle 16 and seat circle inner wall, and seat circle one end is equipped with outside turn-ups 18, does not set up the terminal surface design of turn-ups one end at the seat circle and be the arcwall face structure, and in the one end insert tube of this arcwall face structure, by the turn-ups support body tip, the seat circle can not get into the body when guaranteeing to wear to establish the cable. Owing to set up the expansion groove, the scraping part of being convenient for very much packs into, and, after the expansion groove expansion was packed into the scraping part, the body can lock and fix the scraping part, avoid it to drop, when wearing to establish the cable body, the cable penetrated by the seat circle mesopore, and along with the cable penetrates, the brush hair of scraping part was swept cable body outer wall in step, avoid wearing to establish the in-process cable body and bring into impurity such as dust in the body, particulate matter, can effectively avoid appearing the condition of threading jamming and fish tail cable body.

The cable assembly is compact in structure, small in occupied space, easy to construct, high in fire resistance and long in service life. The utility model has the advantages of be applicable in building decoration tile worker construction phase with the fire resisting cable body of power supply together pre-buried wall body with the outside protective sheath pipe of electric wire, or arrange in the furred ceiling, performance is good, the reliability is high.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. The utility model provides a high security is fireproof cable assembly for building engineering which characterized in that: the cable comprises a protective sleeve with a plurality of pipe bodies arranged side by side, wherein two adjacent pipe bodies are connected through a connecting rib, a cable body is arranged in each pipe body in a penetrating manner, and a gap is reserved between the outer edge of the cable body and the inner wall of each pipe body; the cable body comprises a conductor, and a fire-resistant structure and an insulating structure which are sequentially coated on the outer side of the conductor; the fire-resistant structure comprises a fire-resistant mica tape layer wrapped on the outer side of the conductor.

2. A high-safety fire-resistant cable assembly for construction engineering according to claim 1, wherein: the insulation structure comprises a 105 ℃ flexible polyvinyl chloride insulation layer.

3. A high-safety fire-resistant cable assembly for construction engineering according to claim 1, wherein: the width and the thickness of the connecting ribs are both 2 mm.

4. A high-safety fire-resistant cable assembly for construction engineering according to claim 1, wherein: and two side surfaces of each connecting rib in the thickness direction are respectively provided with a V-shaped groove, and the V-shaped grooves on the two sides are arranged in a staggered manner.

5. A high-safety fire-resistant cable assembly for construction engineering according to claim 1, wherein: the conductor adopts copper monofilaments with the purity not less than 99.999%.

6. The high-safety fire-resistant cable assembly for construction engineering as claimed in claim 1, wherein: the joint position of the connecting rib and the pipe body adopts fillet transition.