CN211604763U - Single-core isolated metal aluminum sheath pre-branching fireproof cable - Google Patents
Single-core isolated metal aluminum sheath pre-branching fireproof cable Download PDFInfo
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- CN211604763U CN211604763U CN202020289743.6U CN202020289743U CN211604763U CN 211604763 U CN211604763 U CN 211604763U CN 202020289743 U CN202020289743 U CN 202020289743U CN 211604763 U CN211604763 U CN 211604763U
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Abstract
The utility model relates to a single core isolated form metallic aluminum sheath is branch fireproof cable in advance. The utility model provides a single core isolated form metallic aluminum sheath is branch fireproof cable in advance, including branch package spare, main cable and branch cable are connected in branch package spare, and main cable and branch cable all include single core conductor sinle silk and the functional layer of cladding single core conductor sinle silk. The beneficial effects of the utility model are that the installation is laid conveniently, and electrically conductive and fire behavior is excellent, and the cable end can be effectively dampproofing.
Description
Technical Field
The utility model relates to a power cable technical field especially relates to a single core isolated form metallic aluminum sheath is branch fireproof cable in advance.
Background
In the use process of the cable, electrical fires caused by faults of electric leakage, short circuit, overload, poor contact and the like of an electrical line and electrical equipment cause great threat to life and property safety of people. According to the statistic data display of the fire department of the ministry of public security: 4 thousands of electric fires occur in China every year, on average 110 fires occur every day, and about 10 minutes of electric fires occur together. The electric fire caused by the faults of electric leakage, short circuit, overload, poor contact, temperature rise and the like of electric lines and electric equipment accounts for 90 percent, and the prevention of fire accidents becomes the focus of social attention again along with the implementation of new fire control laws.
At present, the fireproof cable that is being used on the market, traditional fireproof cable mainly are mineral insulation magnesium oxide cable, and magnesium oxide cable receives raw and other materials, equipment length restriction, and production length is short, easily absorbs moisture, and the price is high, and more economical and practical's flexible fireproof cable is pressed for the market. Meanwhile, a large number of branch boxes need to be installed due to more branch lines in the construction process, so that the construction difficulty is increased, and the integrity of the cable is damaged. For example, application number is CN201821056670.5, and the name is a wire and cable, including restrictive coating, insulating layer, copper sandwich layer, body, wire and cable is body, copper sandwich layer, insulating layer, restrictive coating in proper order from inside to outside, though electric conductive property is excellent, can't avoid the loaded down with trivial details of construction.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem that general cable branch is inconvenient and the cable end easily absorbs moisture, insulation resistance is low provides a single core isolated form metallic aluminum sheath branch fireproof cable in advance.
In order to solve the technical problem of the existence, the technical scheme of the utility model is that: the utility model provides a single core isolated form metallic aluminum sheath branch fireproof cable in advance, includes branch package spare, leader cable and branch cable, and leader cable and branch cable are connected in branch package spare, and leader cable and branch cable all include single core conductor sinle silk and the functional layer of cladding single core conductor sinle silk. The branch package is that plastics are moulded plastics and are formed, and the leader cable runs through in whole branch package, and the branch cable head is connected with the leader cable in branch package, and the branch cable extends out at the one end of branch package. Adopt this kind of structure to replace the branch that general feeder pillar realized the circuit, improved the convenient degree that the installation laid, also guaranteed the whole of cable, reduced relative cost simultaneously, and the outer functional layer that coats of conductor sinle silk can prevent damage and short circuit etc. of sinle silk to a certain extent.
As a preferable scheme of the scheme, the functional layer sequentially comprises a mineral belt layer, a crosslinked polyethylene insulating material layer, a mineral belt layer, a welding embossing aluminum sheath, a fireproof oxygen-insulating layer and a low-smoke halogen-free polyolefin outer sheath from inside to outside. The design aims to ensure that the integral structure can meet the requirements of electrical conductivity while achieving fire resistance.
As an optimal scheme of above-mentioned scheme, branch package spare is formed by first cylinder, second cylinder and a round platform body coupling, and first cylinder one end and second cylinder coupling, the other end of first cylinder and bottom surface are connected under the round platform, the cross-section of second cylinder is greater than the cross-section of first cylinder, has contained in the second cylinder main cable and branch cable, the single core conductor sinle silk of main cable and the single core conductor sinle silk of branch cable are fixed at first cylinder in-connection. The connection part of the conductor core of the main cable and the conductor core of the branch cable occupies a small volume, and the main cable and the branch cable occupy a large volume, so that the section of the second cylinder is larger than that of the first cylinder.
As a preferable scheme of the scheme, the material adopted by the branch packing piece is low-smoke halogen-free polyolefin injection molding material. The low-smoke halogen-free polyolefin injection molding material is adopted because of the low-smoke halogen-free property and high oxygen index, and even if a fire disaster happens, the low-smoke halogen-free polyolefin injection molding material can not generate a large amount of dense smoke and toxic gas.
As a preferable scheme of the scheme, the branch wrapping piece is further wrapped with a layer of metal shell, and the metal shell is formed by splicing in a welding mode. The main material of the branch packing piece is plastic, and a layer of metal shell is wrapped outside the branch packing piece to play a role in protection.
As a preferable scheme of the above scheme, a circle of sheath is arranged at a joint of the end face of the branch packing and the main cable and the branch cable, the sheath is tubular, the sheath and the branch packing are integrated, and the sheath wraps the cable. The existence of sheath can slow down the relative motion of cable and branch package to a certain extent, reduces the wearing and tearing of cable, increase of service life.
As a preferable scheme of the scheme, the sheath is low-smoke halogen-free polyolefin injection molding material. The reason for using this material is that it not only has good flame retardant properties, but also does not generate halogen acid gas during combustion and gives off a small amount of smoke.
As a preferable scheme of the above scheme, the branch packing further comprises a U-shaped copper sleeve, and the branch cable and the main cable are sleeved by the U-shaped copper sleeve and are pressed and fixed inside the branch packing. The wire cores of the main cable and the branch cable are overlapped and sleeved with the U-shaped copper sleeve, and two side faces of the U-shaped copper sleeve are inwards pressed by a pressing clamp tool, so that the two wire cores can be fixedly connected. The U-shaped copper sleeve is used for connecting the two wire cores, the operation is simple, convenient and fast, the cost of the U-shaped copper sleeve is low, and the purchase is very convenient.
As a preferable scheme of the above scheme, the inner side surface of the U-shaped copper sleeve is distributed with uniformly arranged wavy lines. The purpose of this kind of design lies in increasing the friction between U type copper sheathing and the sinle silk, improves firm degree.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the branch packing piece is adopted, so that the convenience degree of installation and laying is greatly improved;
2. the multilayer fireproof material is adopted, so that the electric conductivity is ensured, and the fireproof performance is excellent;
3. the special material effectively realizes the moisture-proof problem of the cable end.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of a cable cross-section of the present invention;
fig. 3 is a schematic structural diagram of the U-shaped copper sleeve of the present invention.
1-single-core conductor wire core, 2-functional layer, 3-mineral belt layer, 4-crosslinked polyethylene insulating material layer, 5-welding embossed aluminum sheath, 6-fireproof oxygen-insulating layer, 7-low smoke halogen-free polyolefin outer sheath, 8-metal shell, 10-branch wrapping piece, 11-main cable, 12-branch cable, 13-sheath, 14-U-shaped copper sleeve, 15-wavy line, 20-round table, 21-first cylinder and 22-second cylinder.
Detailed Description
The technical solution of the present invention is further described below by way of examples and with reference to the accompanying drawings.
Example (b): the single-core isolated type metal aluminum sheath pre-branching fireproof cable comprises a branch wrapping piece 10, a main cable 11 and a branch cable 12, wherein the main cable and the branch cable are connected in the branch wrapping piece, and both the main cable and the branch cable comprise a single-core conductor core 1 and a functional layer 2 wrapping the single-core conductor core. The branch package is that plastics are moulded plastics and are formed, and the leader cable runs through in whole branch package, and the branch cable head is connected with the leader cable in branch package, and the branch cable extends out at the one end of branch package. Adopt this kind of structure to replace the branch that general feeder pillar realized the circuit, improved the convenient degree that the installation laid, also guaranteed the whole of cable, reduced relative cost simultaneously, and the outer functional layer that coats of conductor sinle silk can prevent damage and short circuit etc. of sinle silk to a certain extent.
The functional layer is composed of a plurality of layers, and sequentially comprises a mineral belt layer 3, a cross-linked polyethylene insulating material layer 4, a mineral belt layer, a welding embossing aluminum sheath 5, a fireproof oxygen-insulating layer 6 and a low-smoke halogen-free polyolefin outer sheath 7 from inside to outside. The design aims to ensure that the integral structure can meet the requirements of electrical conductivity while achieving fire resistance.
The branch package spare is formed by first cylinder 21, second cylinder 22 and 20 body coupling of a round platform, and first cylinder one end and second cylinder are connected, and the other end and the round platform of first cylinder are connected in the bottom surface down, the cross-section of second cylinder is greater than the cross-section of first cylinder, has contained in the second cylinder main cable and branch cable, the single core conductor sinle silk of single core conductor sinle silk and branch cable of main cable connects fixedly in first cylinder. The connection part of the conductor core of the main cable and the conductor core of the branch cable occupies a small volume, and the main cable and the branch cable occupy a large volume, so that the section of the second cylinder is larger than that of the first cylinder.
The branch packing piece is made of low-smoke halogen-free polyolefin injection molding material. The low-smoke halogen-free polyolefin injection molding material is adopted because of the low-smoke halogen-free property and high oxygen index, and even if a fire disaster happens, the low-smoke halogen-free polyolefin injection molding material can not generate a large amount of dense smoke and toxic gas. In addition, the branch wrapping piece is also wrapped with a layer of metal shell 8, and the metal shell is spliced by adopting a welding mode. The main material of the branch packing piece is plastic, and a layer of metal shell is wrapped outside the branch packing piece to play a role in protection.
The junction of the terminal surface of branch package and main cable and branch cable is provided with round sheath 13, and the shape of sheath is the tubulose, and the sheath is integrative with branch package, and the sheath wraps up the cable. The existence of sheath can slow down the relative motion of cable and branch package to a certain extent, reduces the wearing and tearing of cable, increase of service life. Meanwhile, the material adopted by the sheath is low-smoke halogen-free polyolefin injection molding material, and the material is adopted because the material has good flame retardant property, halogen acid gas is not generated during combustion, and the smoke quantity is very small.
The branch packing piece further comprises a U-shaped copper sleeve 14, and the branch cable and the main cable are sleeved by the U-shaped copper sleeve and are pressed and fixed in the branch packing piece. The wire cores of the main cable and the branch cable are overlapped and sleeved with the U-shaped copper sleeve, and two side faces of the U-shaped copper sleeve are inwards pressed by a pressing clamp tool, so that the two wire cores can be fixedly connected. The U-shaped copper sleeve is used for connecting the two wire cores, the operation is simple, convenient and fast, the cost of the U-shaped copper sleeve is low, and the purchase is very convenient. Wherein, the inner side surface of the U-shaped copper sleeve is distributed with wave lines 15 which are evenly arranged. The purpose of this kind of design lies in increasing the friction between U type copper sheathing and the sinle silk, improves firm degree.
The manufacturing of the single-core isolated metal aluminum sheath pre-branching fireproof cable is that each functional layer is continuously added outside a single-core conductor wire core to manufacture a main cable and a branch cable, then the main cable and the branch cable are connected through a U-shaped copper sleeve, the connection part is placed in a corresponding mould, an integrated branch wrapping piece is manufactured by externally using low-smoke halogen-free polyolefin injection molding materials, and finally, a metal shell is used for wrapping the branch wrapping piece to obtain the cable.
Claims (9)
1. The utility model provides a branch fireproof cable is in advance covered to single core isolated form metallic aluminum sheath which characterized in that, includes branch package (10), leader cable (11) and branch cable (12), and leader cable and branch cable are connected in branch package, and leader cable and branch cable all include single core conductor sinle silk (1) and cladding single core conductor sinle silk functional layer (2).
2. The single-core isolated type metallic aluminum sheath pre-branching fireproof cable according to claim 1, wherein the functional layer (2) comprises a mineral tape layer (3), a cross-linked polyethylene insulating material layer (4), a mineral tape layer, a welding embossing aluminum sheath (5), a fireproof oxygen-insulating layer (6) and a low-smoke halogen-free polyolefin outer sheath (7) from inside to outside in sequence.
3. The single-core isolated type metal aluminum sheath pre-branching fireproof cable according to claim 1, wherein the branch wrapping piece is formed by integrally connecting a first cylinder (21), a second cylinder (22) and a round table (20), one end of the first cylinder is connected with the second cylinder, the other end of the first cylinder is connected with the lower bottom surface of the round table, the cross section of the second cylinder is larger than that of the first cylinder, the second cylinder internally comprises a main cable (11) and a branch cable (12), and a single-core conductor core (1) of the main cable and a single-core conductor core of the branch cable are fixedly connected in the first cylinder.
4. The single-core isolated pre-branching fireproof cable with the metal aluminum sheath as claimed in claim 3, wherein the branching packing (10) is made of low-smoke halogen-free polyolefin injection molding material.
5. The single-core isolated type metal aluminum sheath pre-branching fireproof cable according to claim 3, wherein a layer of metal shell (8) is further wrapped outside the branching wrapping piece (10), and the metal shells are spliced in a welding mode.
6. A single-core isolated type metallic aluminum sheath pre-branching fireproof cable according to claim 3, wherein a circle of sheath (13) is arranged at the end face of the branching packing piece (10) and the joint of the main cable (11) and the branching cable (12), the sheath is tubular, the sheath and the branching packing piece are integrated, and the sheath wraps the cable.
7. The single-core isolated type pre-branching fireproof cable with the metal aluminum sheath is characterized in that the sheath is made of low-smoke halogen-free polyolefin injection molding materials.
8. A single core isolated type metallic aluminum sheath pre-branching fireproof cable according to claim 3, wherein the branching package (10) further comprises a U-shaped copper sleeve (14), and the U-shaped copper sleeve is used for sheathing the branch cable (12) and the main cable (11) and is fixed in the branching package in a pressing manner.
9. A single core isolated type metallic aluminum sheath pre-branching fireproof cable according to claim 8, wherein the inner side surface of the U-shaped copper sheath (14) is distributed with evenly arranged wavy lines (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020289743.6U CN211604763U (en) | 2020-03-10 | 2020-03-10 | Single-core isolated metal aluminum sheath pre-branching fireproof cable |
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| CN202020289743.6U CN211604763U (en) | 2020-03-10 | 2020-03-10 | Single-core isolated metal aluminum sheath pre-branching fireproof cable |
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| CN211604763U true CN211604763U (en) | 2020-09-29 |
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| CN202020289743.6U Active CN211604763U (en) | 2020-03-10 | 2020-03-10 | Single-core isolated metal aluminum sheath pre-branching fireproof cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114898914A (en) * | 2022-05-27 | 2022-08-12 | 四川蓝电电缆科技有限公司 | Prefabricated branch cable and manufacturing method thereof |
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2020
- 2020-03-10 CN CN202020289743.6U patent/CN211604763U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114898914A (en) * | 2022-05-27 | 2022-08-12 | 四川蓝电电缆科技有限公司 | Prefabricated branch cable and manufacturing method thereof |
| CN114898914B (en) * | 2022-05-27 | 2023-11-14 | 四川蓝电电缆科技有限公司 | Prefabricated branch cable and manufacturing method thereof |
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