CN215731036U

CN215731036U - Sheath type flame-retardant cable

Info

Publication number: CN215731036U
Application number: CN202121983395.3U
Authority: CN
Inventors: 李立国; 赵树齐; 宋铁民
Original assignee: Hebei Jinqiao Cable Co ltd
Current assignee: Hebei Jinqiao Cable Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-02-01
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a sheath type flame-retardant cable, which comprises an outer protective sleeve, wherein an inner protective sleeve is arranged on the inner side of the outer protective sleeve, a flame-retardant cavity is formed between the inner protective sleeve and the outer protective sleeve, a positive flame-retardant pipe is embedded in the inner side of the flame-retardant cavity, an inverted flame-retardant pipe is embedded in the position, located on one side of the positive flame-retardant pipe, of the inner side of the flame-retardant cavity, a PBT flame-retardant rod is embedded in the inner side of the inverted flame-retardant pipe, a cable cavity is arranged on the inner side of the inner protective sleeve, an inner flame-retardant rod is embedded in the position, located on one side of an egg-shaped supporting block, of the inner side of the supporting cavity, the positive flame-retardant pipe and the inverted flame-retardant pipe are guided by the inner flame-retardant rod, thereby being absorbed by the inner flame-retardant rod and a large amount of PBT flame-retardant rods, preventing the heat from collecting in the inner protective sleeve, thereby reach better fire-retardant effect, reduce the load that the cable produced when using, guarantee that the cable can normally transmit information when the high load, prevent to damage the economic loss who causes because of the cable spontaneous combustion.

Description

Sheath type flame-retardant cable

Technical Field

The utility model relates to the technical field of cables, in particular to a sheath type flame-retardant cable.

Background

The cable is usually a cable similar to a rope formed by twisting a plurality of or a plurality of groups of wires, each group of wires are mutually insulated and often twisted around a center, a high-insulation covering layer is wrapped outside the whole cable, the cable is internally electrified and comprises single-strand or multi-strand wires and an insulation layer, the single-strand or multi-strand wires and the insulation layer are used for connecting a circuit, an electric appliance and the like and are respectively applied to different occasions, in order to prolong the service life of the cable, a sheath needs to be sleeved on the outer layer of the cable, and the service life of the cable is prolonged;

however, the existing protective sleeve has poor flame retardancy, and is easy to cause fire due to high temperature when in load operation at some places with high temperature, so that the cable is damaged, and the information transmission work is difficult to carry out, thereby bringing economic loss to people.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sheath type flame-retardant cable which can effectively solve the problems that the existing protective sleeve proposed in the background technology is poor in flame retardance, and fire is easily caused by high temperature in some places with high temperature during load operation, so that the cable is damaged, information transmission work is difficult to carry out, and economic loss is brought to people.

In order to achieve the purpose, the utility model provides the following technical scheme: a sheath type flame-retardant cable comprises an outer protective sleeve, wherein an inner protective sleeve is arranged on the inner side of the outer protective sleeve, a flame-retardant cavity is formed between the inner protective sleeve and the outer protective sleeve, a positive flame-retardant pipe is embedded into the inner side of the flame-retardant cavity, an inverted flame-retardant pipe is embedded into the position, located on one side of the positive flame-retardant pipe, of the inner side of the flame-retardant cavity, and a PBT flame-retardant rod is embedded into the inner side of the inverted flame-retardant pipe;

the cable chamber has been seted up to the inboard of inner protective sheath, the inboard embedding in cable chamber has the division board, be formed with between division board and the inner protective sheath and support the chamber, the inboard embedding in support chamber has egg type supporting shoe, the inboard embedding of egg type supporting shoe has insulating cover, cable conductor is installed to the inboard of insulating cover, the inboard that supports the chamber is located egg type supporting shoe one side position department embedding has interior flame retardant stick.

Preferably, the upright flame-retardant tube and the inverted flame-retardant tube are respectively provided with a plurality of flame-retardant tubes, the upright flame-retardant tubes and the inverted flame-retardant tubes are embedded in the inner sides of the flame-retardant cavities at equal angles, clamping cavities are formed in the inner sides of the upright flame-retardant tubes and the inverted flame-retardant tubes, and the PBT flame-retardant rod is clamped in the inner sides of the upright flame-retardant tubes and the inverted flame-retardant tubes through the clamping cavities.

Preferably, the egg-shaped supporting blocks are three, the three egg-shaped supporting blocks are arranged on the inner side of the cable cavity at equal angles, mounting cavities are formed in the positions, corresponding to the insulating sleeves, of the inner sides of the egg-shaped supporting blocks, and the insulating sleeves and the cable wires are arranged on the inner sides of the egg-shaped supporting blocks through the mounting cavities.

Preferably, the internal flame-retardant rods are provided with a plurality of groups, the internal flame-retardant rods in the groups are equidistantly arranged on the inner side of the supporting cavity, and the internal flame-retardant rods in each group are provided with a plurality of groups.

Preferably, a partition cavity is formed between the partition plates, a central supporting block is embedded into the inner side of the partition cavity, a cutting opening is formed in the inner side of the central supporting block, a limiting cavity is formed in the middle of the inner side of the central supporting block, cutting fibers slide in the inner side of the limiting cavity, and a light reflecting sticker is sleeved on the outer side of the outer protective sleeve.

Preferably, the cutting opening has been seted up threely, and the angle such as three cutting opening is seted up in the inboard of central supporting shoe, the reflection of light subsides are provided with a plurality of, and a plurality of reflection of light subsides equidistance cup joints the outside at outer protective sheath.

Compared with the prior art, the utility model has the beneficial effects that: the utility model has scientific and reasonable structure and safe and convenient use:

1. be provided with outer protective sheath, interior protective sheath, fire-retardant chamber, just put fire-retardant pipe, invert fire-retardant pipe and PBT fire-retardant stick, through the just fire-retardant pipe of putting of interior fire-retardant stick direction and invert fire-retardant pipe, thereby absorb by interior fire-retardant stick and a large amount of PBT fire-retardant sticks, prevent that the heat from gathering in the inside of inner protective sheath, thereby reach better flame retardant efficiency, reduce the load that the cable produced when using, guarantee that the cable can normally transmit information when high load, prevent to damage the economic loss who causes because of the cable spontaneous combustion.

2. Be provided with and cut apart the chamber, the center supporting shoe, the cutting opening, spacing chamber, cutting fibre and reflection of light paste, thereby calculate the length of the cable that needs the shearing fast through the quantity that the reflection of light pasted, cutting fibre can follow the outside cutting of an arbitrary cutting opening this moment, thereby it is quick to cut through all protective layers that cutting fibre will cable outside, prevent cutting fibre and cable conductor entanglement looks friction, prevent that cable conductor from damaging the damage, and the center supporting shoe of staying inside protective sheath behind the cutting of center supporting shoe can continue to play the supporting role.

3. Be provided with cable chamber, division board, support chamber, egg type supporting shoe, insulating cover, cable conductor and interior flame retardant bar, because the existence of egg type supporting shoe, so the oppression that produces can disperse, prevent that all oppression from all being used in the cable conductor, at this moment the interior flame retardant bar also can play certain supporting role to further protect the cable, the protection cable can not damage, thereby has prolonged the life of cable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings:

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

FIG. 2 is a schematic view of the mounting structure of the inner protective sheath of the present invention;

FIG. 3 is a schematic view of region A of FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the mounting structure of the egg-shaped support block of the present invention;

FIG. 5 is a schematic view of the mounting structure of the core backing block of the present invention;

reference numbers in the figures: 1. an outer protective sheath; 2. an inner protective sheath; 3. a flame retardant cavity; 4. a flame-retardant pipe is arranged right; 5. inverting the flame-retardant tube; 6. a PBT flame retardant rod; 7. a cable cavity; 8. a partition plate; 9. a support cavity; 10. an egg-shaped support block; 11. an insulating sleeve; 12. a cable conductor; 13. an internal flame-retardant rod; 14. dividing the cavity; 15. a central support block; 16. cutting the opening; 17. a limiting cavity; 18. cutting the fibers; 19. and (5) reflecting the light.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1-5, the utility model provides a technical scheme, which includes an outer protective sleeve 1, an inner protective sleeve 2 is arranged on the inner side of the outer protective sleeve 1, a flame retardant cavity 3 is formed between the inner protective sleeve 2 and the outer protective sleeve 1, an upright flame retardant tube 4 is embedded in the inner side of the flame retardant cavity 3, an inverted flame retardant tube 5 is embedded in the inner side of the flame retardant cavity 3 at a position on one side of the upright flame retardant tube 4, a PBT flame retardant rod 6 is embedded in the inner side of the inverted flame retardant tube 5, the upright flame retardant tube 4 and the inverted flame retardant tube 5 are respectively provided with a plurality of upright flame retardant tubes 4 and a plurality of inverted flame retardant tubes 5, which are embedded and installed in the inner side of the flame retardant cavity 3 at equal angles, clamping cavities are respectively formed in the inner sides of the upright flame retardant tube 4 and the inverted flame retardant tube 5, and the PBT flame retardant rod 6 is clamped in the inner sides of the upright flame retardant tube 4 and the inverted flame retardant tube 5 through the clamping cavities, so as to improve the flame retardancy of the cable;

the cable protection device is characterized in that a cable cavity 7 is formed in the inner side of the inner protection sleeve 2, a partition plate 8 is embedded in the inner side of the cable cavity 7, a support cavity 9 is formed between the partition plate 8 and the inner protection sleeve 2, egg-shaped supporting blocks 10 are embedded in the inner side of the support cavity 9, insulating sleeves 11 are embedded in the inner sides of the egg-shaped supporting blocks 10, cable leads 12 are installed on the inner sides of the insulating sleeves 11, the three egg-shaped supporting blocks 10 are installed on the inner side of the cable cavity 7 at equal angles, installation cavities are formed in the positions, corresponding to the insulating sleeves 11, of the inner sides of the egg-shaped supporting blocks 10, the insulating sleeves 11 and the cable leads 12 are installed on the inner sides of the egg-shaped supporting blocks 10 through the installation cavities, cables are convenient to support and are prevented from being extruded and deformed when being buried underground, inner side positions, located on one side of the egg-shaped supporting blocks 10, of the inner side of the support cavity 9 are embedded with inner flame retardant rods 13, the inner flame retardant rods 13 are arranged in groups, the inner flame retardant rods 13 are installed on the inner side of the support cavity 9 at equal intervals, each group of internal flame-retardant rods 13 is provided with a plurality of rods, so that the supporting effect can be achieved, and the flame-retardant performance can be further improved.

Division board 8 is formed with between and cuts apart chamber 14, the inboard embedding of cutting apart chamber 14 is installed central supporting shoe 15, cutting opening 16 has been seted up to the inboard of central supporting shoe 15, cutting opening 16 has been seted up threely, angles such as three cutting opening 16 are seted up in the inboard of central supporting shoe 15, convenient quick follow each angle intercepting cable, spacing chamber 17 has been seted up to the inboard middle part position department of central supporting shoe 15, the inboard slip in spacing chamber 17 has cutting fiber 18, reflection of light subsides 19 have been cup jointed in the outside of outer protective sheath 1, reflection of light subsides 19 are provided with a plurality of, a plurality of reflection of light subsides 19 equidistance cup joints in the outside of outer protective sheath 1, thereby convenient quick cable according to the quantity of reflection of light subsides 19 quick intercepting required length.

The working principle and the using process of the utility model are as follows: firstly, when a wiring person cuts and connects a cable, counting the number of the light reflecting pastes 19, wherein the distance between every two light reflecting pastes 19 is equal, so that the length of the cable to be cut can be quickly calculated through the number of the light reflecting pastes 19, then after the length is determined, the cutting fibers 18 are pulled from the limiting cavity 17 to the outer side of the cable through pulling the cutting fibers 18, at the moment, the cutting fibers 18 can be cut outwards from any one cutting opening 16, so that all protective layers outside the cable can be quickly cut through the cutting fibers 18, all cable conductors 12 can be avoided, the cutting fibers 18 and the cable conductors 12 are prevented from being entangled and rubbed with each other, the cable conductors 12 are prevented from being damaged, and the central supporting block 15 remained in the inner protective sleeve 2 after the central supporting block 15 is cut can continuously play a supporting role;

then, when the cable is buried underground, soil outside the cable extrudes the cable, and at the moment, due to the existence of the egg-shaped supporting block 10, the generated compression force is dispersed, all the compression force is prevented from acting on the cable lead 12, and the inner flame-retardant rod 13 also plays a certain supporting role at the moment, so that the cable is further protected, the cable is protected from being damaged, and the service life of the cable is prolonged;

finally, the plurality of cable conductors 12 can be separated and separated through the partition plate 8, so that the heat generated when the cable is used is guaranteed not to be concentrated and collected, the whole temperature rise of the cable is prevented from being fast, a large amount of heat generated when the cable is used can be guided to the upright flame-retardant tube 4 and the inverted flame-retardant tube 5 through the inner flame-retardant rod 13, the heat is prevented from being collected inside the inner protective sleeve 2 by the inner flame-retardant rod 13 and the large amount of PBT flame-retardant rods 6, a good flame-retardant effect is achieved, the load generated when the cable is used is reduced, the cable can be guaranteed to normally transmit information under high load, and economic loss caused by spontaneous combustion damage of the cable is prevented.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a sheathed flame retarded cable, includes outer protective sheath (1), its characterized in that: an inner protective sleeve (2) is arranged on the inner side of the outer protective sleeve (1), a flame-retardant cavity (3) is formed between the inner protective sleeve (2) and the outer protective sleeve (1), an upright flame-retardant pipe (4) is embedded into the inner side of the flame-retardant cavity (3), an inverted flame-retardant pipe (5) is embedded into the position, located on one side of the upright flame-retardant pipe (4), of the inner side of the flame-retardant cavity (3), and a PBT flame-retardant rod (6) is embedded into the inner side of the inverted flame-retardant pipe (5);

cable cavity (7) have been seted up to the inboard of inner protective sheath (2), the inboard embedding in cable cavity (7) has division board (8), be formed with between division board (8) and inner protective sheath (2) and support chamber (9), the inboard embedding in support chamber (9) has egg type supporting shoe (10), the inboard embedding of egg type supporting shoe (10) has insulating cover (11), cable conductor (12) are installed to the inboard of insulating cover (11), the inboard that supports chamber (9) is located egg type supporting shoe (10) one side position department embedding has interior flame retardant stick (13).

2. The sheathed flame-retardant cable according to claim 1, wherein: just putting fire-retardant pipe (4) and invertedly fire-retardant pipe (5) and all being provided with a plurality of, the inboard in fire-retardant chamber (3) is installed in the embedding of angles such as a plurality of just putting fire-retardant pipe (4) and invertedly fire-retardant pipe (5), the joint chamber has all been seted up to the inboard of just putting fire-retardant pipe (4) and invertedly fire-retardant pipe (5), PBT hinders excellent (6) and puts the inboard of fire-retardant pipe (4) and invertedly fire-retardant pipe (5) through joint chamber joint.

3. The sheathed flame-retardant cable according to claim 1, wherein: the three egg-shaped supporting blocks (10) are arranged, the three egg-shaped supporting blocks (10) are arranged on the inner side of the cable cavity (7) at equal angles, mounting cavities are formed in the positions, corresponding to the insulating sleeve (11), of the inner sides of the egg-shaped supporting blocks (10), and the insulating sleeve (11) and the cable lead (12) are arranged on the inner sides of the egg-shaped supporting blocks (10) through the mounting cavities.

4. The sheathed flame-retardant cable according to claim 1, wherein: the inner flame-retardant rods (13) are provided with a plurality of groups, the inner flame-retardant rods (13) in the groups are equidistantly arranged on the inner side of the supporting cavity (9), and the inner flame-retardant rods (13) in each group are all provided with a plurality of rods.

5. The sheathed flame-retardant cable according to claim 1, wherein: division chamber (14) are formed between division board (8), center support block (15) are installed in the inboard embedding of division chamber (14), cutting opening (16) have been seted up to the inboard of center support block (15), spacing chamber (17) have been seted up to the inboard middle part position department of center support block (15), the inboard slip in spacing chamber (17) has cutting fibre (18), reflection of light subsides (19) have been cup jointed in the outside of outer protective sheath (1).

6. The sheathed flame-retardant cable according to claim 5, wherein: three is seted up in cutting opening (16), and angles such as three cutting opening (16) are seted up in the inboard of central supporting shoe (15), reflection of light subsides (19) are provided with a plurality of, and a plurality of reflection of light subsides (19) equidistance cup joints the outside at outer protective sheath (1).