CN219329135U

CN219329135U - Flame-retardant four-core cable wire with high insulation resistance

Info

Publication number: CN219329135U
Application number: CN202223074445.3U
Authority: CN
Inventors: 侯锦松; 侯伟平; 侯振锋
Original assignee: Hainan Wanxinda Wire And Cable Co ltd
Current assignee: Hainan Wanxinda Wire And Cable Co ltd
Priority date: 2022-11-19
Filing date: 2022-11-19
Publication date: 2023-07-11
Anticipated expiration: 2032-11-19

Abstract

The utility model discloses a flame-retardant four-core cable with high insulation resistance, which comprises a cable main body, wherein a fixing ring is arranged on the outer side of the cable main body, a damping device is arranged below the fixing ring, a connecting seat is arranged below the damping device, and a ventilation device is arranged in the fixing ring. According to the utility model, through the mutual matching of the devices, the basic flame-retardant and insulating functions of the cable main body are realized, the heat dissipation effect of the heat conduction block is improved, the interior of the cable main body is effectively dissipated, so that the problems that the cable core is carried and overheated, the heat is concentrated in the inner cavity and affects the use effect of other elements are solved, and the problems that the conventional cable is directly connected with an electric pole through a steel wire rope, frequent adjustment and maintenance are required for workers, the cable is always in a tensioned state and the cable has abrasion and fracture risks are solved.

Description

Flame-retardant four-core cable wire with high insulation resistance

Technical Field

The utility model relates to the technical field of cables, in particular to a flame-retardant four-core cable wire with high insulation resistance.

Background

The cable is typically a rope-like cable formed by twisting several or groups of conductors (at least two of each group), each group of conductors being insulated from each other and often twisted around a center, the entire outer face being covered with a highly insulating coating, having the characteristics of internal energization, external insulation. Cables are used as an important transmission device in power systems, information transmission and instrumentation systems. Three of the four-core cables are phase wires, one is a zero wire, and the four-core cable is a low-voltage cable which is commonly used at present and has two cross sections of four equal cores and 3+1 cores. The four-core cable is provided with a neutral wire, can be used as an equipotential, is used for discharging the ground fault current, and is used for protecting the ground wire from being burnt out before the protection equipment acts when the ground fault occurs.

For example, chinese patent CN215183220U discloses a fire-retardant four-core cable wire of high insulation resistance, this fire-retardant four-core cable wire of high insulation resistance, through first fire-retardant layer, heat conduction piece and the second fire-retardant layer of setting, in the use, the heat that produces when the cable core load can be derived to the heat conduction piece, avoid the cable core overheated and cause the insulating layer to melt the fire, first fire-retardant layer and second fire-retardant layer have fire-retardant effect, because the filling layer is high temperature resistant asbestos, further strengthened fire-retardant effect, fire-retardant radiating purpose has been realized.

However, in the device, the heat generated by the cable core load is still remained in the filling layer after being led out by the heat conducting block, and under the condition that the cable is completely sealed, the heat loss is slow, so that the heat radiating effect of the heat conducting block is affected to a certain extent.

Disclosure of Invention

Aiming at the problems in the related art, the utility model provides a flame-retardant four-core cable with high insulation resistance, so as to overcome the technical problems in the prior related art.

For this purpose, the utility model adopts the following specific technical scheme:

the utility model provides a fire-retardant four-core cable of high insulation resistance, includes the cable conductor main part, and the cable conductor main part outside is equipped with the solid fixed ring, and gu fixed ring below is equipped with damping device, and damping device below is equipped with the connecting seat, is equipped with ventilation unit in the solid fixed ring.

Preferably, in order to realize the essential fire-retardant, insulating function of cable conductor main part, the lag inboard is equipped with first fire-retardant layer and water conservancy diversion layer, the inside inner chamber that is equipped with of lag, the inside cooling tube that is equipped with of inner chamber, the cooling tube both sides are located the intracavity symmetry and are equipped with the several cable core, the lag outside is equipped with the several joint piece, the cable core outside is equipped with insulating layer and the fire-retardant layer of second, the outside fixed mounting of insulating layer has the heat conduction piece, the one end that the insulating layer was kept away from to the heat conduction piece runs through the fire-retardant layer of second to extend to the fire-retardant layer outside of second and link to each other with the cooling tube.

Preferably, in order to improve the radiating effect of heat conduction piece, carry out effectual heat dissipation to cable line main part inside, the below of cooling tube is equipped with the outlet duct, the one end that the cooling tube was kept away from to the outlet duct runs through fire-retardant layer, guiding layer and lag to extend to the lag outside, and the one end of outlet duct is located the lag outside and is equipped with the dust cover, one side of cooling tube is equipped with the intake pipe, the one end that the cooling tube was kept away from to the intake pipe runs through fire-retardant layer, guiding layer and lag, and extend to the lag outside and link to each other with ventilation unit, ventilation unit includes the filtration passageway, be equipped with miniature fan in the filtration passageway.

Preferably, in order to solve traditional cable conductor and pass through wire rope and link to each other with the pole, the cable conductor is in the state of being strained all the time, the cable conductor has wearing and tearing and cracked risk, and the problem of the elasticity of wire rope in order to control cable conductor needs frequent adjustment wire rope, the retainer ring inboard is equipped with the joint mouth, the shape of retainer ring and cable conductor bulk phase-match, joint mouth and joint piece phase-match, the retainer ring lower extreme is fixed continuous with damping device through the several stabilizer blade, damping device includes the extension board, the extension board below is equipped with the traveller, the traveller lower extreme links to each other with the connecting seat is fixed, the activity links to each other between extension board and the traveller, link to each other through the several spring between extension board and the connecting seat, connecting seat bilateral symmetry is equipped with the several rope, the connecting seat links to each other with the rope is fixed.

The beneficial effects of the utility model are as follows: through the mutual cooperation of the devices, the basic flame retardant and insulating functions of the cable main body are realized, the heat dissipation effect of the heat conduction block is improved, the interior of the cable main body is effectively dissipated, so that the situation that the cable core is carried and overheated is avoided, the heat is concentrated in the inner cavity to affect the use effect of other elements is avoided, the problems that the traditional cable is directly connected with an electric pole through a steel wire rope, frequent adjustment and maintenance of workers are required, the cable is always in a tensioned state, and the cable has abrasion and fracture risks are solved;

through damping device and connecting seat mutually supporting, play certain cushioning effect for cable conductor main part and solid fixed ring can be on the connecting seat at certain angle within range certain rotatory, can not lead to cable conductor main part distortion winding owing to the restriction of a plurality of connecting seats that set up in the long distance cable conductor main part.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a high insulation resistance flame retardant quad cable according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a cable body in a high insulation resistance flame retardant quad cable according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a connection structure of a fixing ring and a cable body in a flame retardant quad cable with high insulation resistance according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a ventilation device in a flame retardant quad cable with high insulation resistance according to an embodiment of the present utility model.

In the figure:

1. a cable body; 2. a fixing ring; 3. a damping device; 4. a connecting seat; 5. a ventilation device; 6. a protective sleeve; 7. a first flame retardant layer; 8. a flow guiding layer; 9. an inner cavity; 10. a heat radiating pipe; 11. a cable core; 12. an insulating layer; 13. a second flame retardant layer; 14. a heat conduction block; 15. an air outlet pipe; 16. an air inlet pipe; 17. a dust cover; 18. a clamping block; 19. a card interface; 20. a support leg; 21. a support plate; 22. a spool; 23. a rope; 24. a filtration channel; 25. a micro fan.

Detailed Description

For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.

Example 1

Referring to fig. 1-4, a flame retardant four-core cable with high insulation resistance comprises a cable main body 1, wherein a fixing ring 2 is arranged on the outer side of the cable main body 1, a damping device 3 is arranged below the fixing ring 2, a connecting seat 4 is arranged below the damping device 3, and a ventilation device 5 is arranged in the fixing ring 2.

Through the mutually supporting of above-mentioned mechanism, realize the fire-retardant, the insulating function of cable conductor main part 1 basic, improve the radiating effect of heat conduction piece 14 simultaneously, carry out effectual heat dissipation to cable conductor main part 1 is inside, in order to avoid the carrying of cable core 11 overheated, the heat concentrates on inner chamber 9, influence the result of use of other components, through setting up damping device 3 and connecting seat 4, it is direct continuous with the pole that traditional cable conductor passes through wire rope to solve, need the workman frequently adjust and overhaul, and the cable conductor is in by taut state all the time, the cable conductor has the problem of wearing and tearing and fracture risk.

Example two

Referring to fig. 1-4, a cable main body 1 includes a protective sleeve 6, a first flame retardant layer 7 and a diversion layer 8 are disposed on the inner side of the protective sleeve 6, an inner cavity 9 is disposed inside the protective sleeve 6, a heat dissipation tube 10 is disposed inside the inner cavity 9, a plurality of cable cores 11 are symmetrically disposed on two sides of the heat dissipation tube 10 in the inner cavity 9, and a plurality of clamping blocks 18 are disposed on the outer side of the protective sleeve 6.

The conductive filler is arranged in the diversion layer 8, has conductivity and electromagnetic wave shielding performance, can shield an electromagnetic field in the cable, does not affect other elements, and can guide the leaked current into the grounding grid by the diversion layer 8 when the cable core wire is damaged, so that the safety of the cable is improved.

The cable core 11 outside is equipped with insulating layer 12 and fire-retardant layer 13 of second, and the outside fixed mounting of insulating layer 12 has heat conduction piece 14, and the one end that heat conduction piece 14 kept away from insulating layer 12 runs through fire-retardant layer 13 of second to extend to the fire-retardant layer 13 outside of second and link to each other with cooling tube 10.

The heat conduction block 14 is used for guiding out heat generated when the cable core 11 is loaded to the inside of the radiating pipe 10, so that the cable core 11 is prevented from being overheated to ignite the protective layer on the outer side, and the first flame-retardant layer 7 and the second flame-retardant layer 13 have flame-retardant effects and play a role in safety protection.

Through the mutual cooperation of the devices, the basic flame retardant and insulating functions of the cable main body 1 are realized, the current possibly leaked out is led into the grounding grid, and the safety of the cable is improved.

Example III

Referring to fig. 1-4, an air outlet pipe 15 is disposed below the heat dissipating tube 10, one end of the air outlet pipe 15 far away from the heat dissipating tube 10 penetrates through the flame retardant layer 7, the diversion layer 8 and the protecting sleeve 6 and extends to the outer side of the protecting sleeve 6, one end of the air outlet pipe 15 is disposed on the outer side of the protecting sleeve 6 and is provided with a dust cover 17, one side of the heat dissipating tube 10 is provided with an air inlet pipe 16, and one end of the air inlet pipe 16 far away from the heat dissipating tube 10 penetrates through the flame retardant layer 7, the diversion layer 8 and the protecting sleeve 6 and extends to the outer side of the protecting sleeve 6 to be connected with the ventilation device 5. The radiating pipe 10 is elliptical, the cable cores 11 are symmetrically distributed at two sides of the radiating pipe 10,

the outlet duct 15 is used for discharging the hot air in the cooling tube 10, and the bottom of the dust cover 17 arranged on the outer side of the outlet duct 15 is provided with a filter screen, so that sand dust can be prevented from entering the outlet duct 15 and rainwater can be prevented from flowing backwards into the air inlet and outlet duct 15.

The air inlet pipe 16 is connected with the ventilation device 5, and the ventilation device 5 continuously blows air into the air inlet pipe 16 and the air inlet pipe 16 to achieve the effect of taking away heat in the cable main body 1.

The ventilation device 5 comprises a filtering channel 24, a filtering layer is arranged in the filtering channel 24, filtering sponge and a filter screen are filled in the filtering layer, air sucked into the filtering channel 24 is adsorbed by the filtering layer, water vapor and sand impurities are blocked outside, the blocking of the air inlet pipe 16 and the radiating pipe 10 is avoided, a micro fan 25 is arranged in the filtering channel 24, the micro fan 25 is connected with a micro motor, and one side of the micro motor is connected with a solar battery pack.

Through the mutual cooperation of the devices, the heat dissipation effect of the heat conduction block 14 is improved, and the inside of the cable main body 1 is effectively dissipated.

Example IV

Referring to fig. 1-4, a clamping connection 19 is arranged on the inner side of the fixed ring 2, the shape of the fixed ring 2 is matched with that of the cable main body 1, the clamping connection 19 is matched with a clamping connection block 18, and the lower end of the fixed ring 2 is fixedly connected with the damping device 3 through a plurality of supporting legs 20.

When the cable is installed, the clamping block 18 can be aligned with the clamping block 19, so that the air outlet pipe 15 is always positioned below the cable main body 1, and rainwater can be prevented from entering the air outlet pipe 15 and the radiating pipe 10.

The damping device 3 comprises a support plate 21, a sliding column 22 is arranged below the support plate 21, the lower end of the sliding column 22 is fixedly connected with the connecting seat 4, the support plate 21 is movably connected with the sliding column 22, and the support plate 21 is connected with the connecting seat 4 through a plurality of springs.

The middle of the support plate 21 is semi-arc-shaped, the sliding column 22 is matched with the support plate 21, after the cable main body 1 and the fixed ring 2 are connected and fixed, when the cable main body 1 shakes due to wind force, the fixed ring 2 connected with the cable main body can shake left and right, the support plate 21 below slides left and right on the sliding column 22, and a spring between the support plate 21 and the connecting seat 4 also plays a certain damping role, so that the cable main body 1 and the fixed ring 2 can rotate at a certain angle, and the cable main body 1 is not twisted and wound due to the limitation of a plurality of connecting seats 4 arranged on the long-distance cable main body 1.

A plurality of ropes 23 are symmetrically arranged on two sides of the connecting seat 4, and the connecting seat 4 is fixedly connected with the ropes 23.

The rope 23 is the nylon material that toughness is great and the surface adheres to and has the elasticity waterproof layer, rope 23 itself has higher heat resistance and wear resistance, can adapt to wind-force under the high altitude environment and shake and the tight pulling at both ends, in this embodiment, the cable conductor main part 1 outside sets up a solid fixed ring 2 and connecting seat 4 every 50 meters, link to each other connecting seat 4 and pole through rope 23, then with interface 19 and joint piece 18 alignment again, link to each other cable conductor main part 1 and solid fixed ring 2, can avoid directly pulling cable conductor main part 1 and cause the cable conductor to consume, also can have certain supporting role to cable conductor main part 1, can avoid because weather variation, cable conductor main part 1 takes place thermal expansion shrinkage, pull too tight or the pine, the cable conductor scrapes the branch, long-time tight wearing and tearing, influence cable conductor life scheduling condition.

Through the mutual cooperation of above device, solve traditional cable conductor and pass through wire rope and link to each other with the pole, the cable conductor is in by taut state all the time, and the cable conductor has wearing and tearing and cracked risk to the problem of the elasticity of wire rope in order to control cable conductor needs frequent adjustment.

In summary, by means of the technical scheme of the utility model, the first flame-retardant layer 7 and the diversion layer 8 are arranged in the cable main body 1, so that a basic flame-retardant effect can be achieved, and the leaked current can be led into the grounding grid, so that the safety of the cable is improved; the radiating pipe 10 and the heat conducting block 14 arranged in the inner cavity 9 are matched with each other, heat generated when the cable core 11 is loaded is led out and conducted to the radiating pipe 10, and then the heat is discharged out of the cable main body 1, so that the cable core 11 is prevented from carrying overheat, the heat is concentrated in the inner cavity, the use effect of other elements is affected, and the cable core 11 is prevented from overheat igniting the outer protective layer; when a cable is erected at high altitude, the connecting seat 4 is connected with the electric pole through the rope 23, then the clamping interface 19 is aligned with the clamping block 18, and the cable main body 1 is connected with the fixed ring 2, so that the cable loss caused by directly pulling the cable main body 1 can be avoided, the cable main body 1 can be supported to a certain extent, and the situation that the cable main body 1 is pulled too tightly or too loosely due to the thermal expansion and contraction effects of weather can be avoided; the ventilation device 5 drives the micro fan 25 to rotate through the micro motor, the air source continuously blows into the air inlet pipe 16, the air flows in the radiating pipe 10 all the time, and the hot air in the radiating pipe 10 is taken away in the air flow and discharged through the air outlet pipe 15, so that the effect of taking away the heat in the cable body 1 through the heat conducting block 14 and the radiating pipe 10 is achieved, the basic flame retardant and insulating functions of the cable body 1 are realized through the mutual cooperation of the devices, the heat radiating effect of the heat conducting block 14 is improved through the cooperation of the radiating pipe 10 and the ventilation device 5, the effective heat radiation is carried out in the cable body 1, the cable core 11 is prevented from carrying overheat, the heat is concentrated in the inner cavity 9, the use effect of other elements is affected, the problems that the traditional cable is directly connected with an electric pole through a steel wire rope, frequent adjustment and maintenance are required, the cable is always in a tensioned state, and the cable is worn and broken risk is solved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a fire-retardant four-core cable of high insulation resistance, its characterized in that, includes cable conductor main part (1), the cable conductor main part (1) outside is equipped with solid fixed ring (2), gu fixed ring (2) below is equipped with damping device (3), damping device (3) below is equipped with connecting seat (4), be equipped with ventilation unit (5) in gu fixed ring (2).

2. The flame-retardant four-core cable with high insulation resistance according to claim 1, wherein the cable main body (1) comprises a protective sleeve (6), a first flame-retardant layer (7) and a diversion layer (8) are arranged on the inner side of the protective sleeve (6), an inner cavity (9) is arranged inside the protective sleeve (6), radiating pipes (10) are arranged inside the inner cavity (9), a plurality of cable cores (11) are symmetrically arranged on two sides of each radiating pipe (10) in the inner cavity (9), and a plurality of clamping blocks (18) are arranged on the outer side of the protective sleeve (6).

3. The flame-retardant four-core cable with high insulation resistance according to claim 2, wherein an insulation layer (12) and a second flame-retardant layer (13) are arranged on the outer side of the cable core (11), a heat conducting block (14) is fixedly arranged on the outer side of the insulation layer (12), and one end, away from the insulation layer (12), of the heat conducting block (14) penetrates through the second flame-retardant layer (13) and extends to the outer side of the second flame-retardant layer (13) to be connected with the radiating pipe (10).

4. A fire-retardant four-core cable wire of high insulation resistance according to claim 3, characterized in that, the below of cooling tube (10) is equipped with outlet duct (15), outlet duct (15) keep away from the one end of cooling tube (10) runs through fire-retardant layer (7), water conservancy diversion layer (8) with lag (6) and extend to lag (6) outside, just the one end of outlet duct (15) is located lag (6) outside is equipped with dust cover (17), one side of cooling tube (10) is equipped with intake pipe (16), the one end that cooling tube (10) was kept away from runs through fire-retardant layer (7), water conservancy diversion layer (8) with lag (6) and extend to lag (6) outside and ventilation unit (5) link to each other.

5. A fire-retardant quad cable according to claim 4, wherein said ventilation means (5) comprises a filtering channel (24), said filtering channel (24) being internally provided with a micro fan (25).

6. The flame-retardant four-core cable with high insulation resistance according to claim 5, wherein a clamping interface (19) is arranged on the inner side of the fixed ring (2), the shape of the fixed ring (2) is matched with that of the cable main body (1), the clamping interface (19) is matched with the clamping block (18), and the lower end of the fixed ring (2) is fixedly connected with the damping device (3) through a plurality of supporting legs (20).

7. The flame-retardant four-core cable wire with high insulation resistance according to claim 1, wherein the damping device (3) comprises a support plate (21), a sliding column (22) is arranged below the support plate (21), the lower end of the sliding column (22) is fixedly connected with the connecting seat (4), the support plate (21) is movably connected with the sliding column (22), and the support plate (21) is connected with the connecting seat (4) through a plurality of springs.

8. The flame-retardant four-core cable with high insulation resistance according to claim 7, wherein a plurality of ropes (23) are symmetrically arranged on two sides of the connecting seat (4), and the connecting seat (4) is fixedly connected with the ropes (23).