CN215577749U

CN215577749U - Ultrahigh-voltage cable with high protection performance

Info

Publication number: CN215577749U
Application number: CN202121861188.0U
Authority: CN
Inventors: 刘潺
Original assignee: Jinan Mashiji Intelligent Environmental Protection Technology Co ltd; Jinan Today Fuxing Electric Group Co ltd
Current assignee: Jinan Mashiji Intelligent Environmental Protection Technology Co ltd; Jinan Today Fuxing Electric Group Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-01-18
Anticipated expiration: 2031-08-10

Abstract

The utility model relates to the technical field of power cables and discloses an ultrahigh-voltage cable with high protection performance, which comprises three electric core assemblies, wherein the outer sides of the three electric core assemblies are movably connected with a supporting assembly, the outer sides of the three electric core assemblies are provided with first protection assemblies, the outer side of each first protection assembly is sleeved with a second protection assembly, the outer side of each second protection assembly is sleeved with a third protection assembly, each electric core assembly comprises three mutually-jointed wire cores, the outer sides of the three wire cores are fixedly connected with a conductor shielding ring, the outer side of the conductor shielding ring is sleeved with an insulating shielding ring, and an insulating layer is filled between the insulating shielding ring and the conductor shielding ring. This ultrahigh voltage cable that protectiveness is high possesses advantages such as protectiveness, has solved because ultrahigh voltage cable's transmission voltage electric current is high, but once surface or inside appear damaged, lead to the cable to produce easily and catch fire or electric leakage phenomenon, harm to people and nature all is very big problem.

Description

Ultrahigh-voltage cable with high protection performance

Technical Field

The utility model relates to the technical field of power cables, in particular to an ultrahigh voltage cable with high protection performance.

Background

The ultra-high voltage cable is a kind of power cable, and is a power cable for transmitting voltage levels of eight hundred kilovolts and more direct current and one thousand kilovolts and more alternating current, and ultra-high voltage transmission is the most advanced power transmission technology in the world.

Because the transmission voltage and current of the ultrahigh voltage cable are extremely high, the cable is easy to generate fire or electric leakage phenomenon once the surface or the inside of the ultrahigh voltage cable is damaged, and the damage to people and nature is extremely large, the ultrahigh voltage cable with high protection performance is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the ultrahigh voltage cable with high protection performance, which has the advantages of high protection performance and the like, and solves the problem that the cable is easy to generate fire or electric leakage phenomenon and is extremely harmful to people and nature due to the fact that the transmission voltage and current of the ultrahigh voltage cable are extremely high, and the surface or the inside of the ultrahigh voltage cable is damaged.

(II) technical scheme

The technical scheme for solving the technical problems is as follows: the utility model provides an ultra high voltage cable that protectiveness is high, is three including quantity electric core subassembly, three the outside of electric core subassembly all with supporting component swing joint, three the outside of electric core subassembly is provided with first protective assembly, first protective assembly's outside cover is equipped with second protective assembly, second protective assembly's outside cover is equipped with the third protective assembly.

The utility model has the beneficial effects that:

this ultrahigh voltage cable that protectiveness is high, electric core subassembly and first protection subassembly can play certain isolation to this cable when getting on fire or the electric leakage, avoid electric current and flame diffusion to people and nature production harm, and second protection subassembly and third protection subassembly can cushion the impact force that receives to this cable and offset, avoid this cable to take place the phenomenon of rupture to realize the high effect of protectiveness.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, the electric core subassembly includes the sinle silk of three laminating of each other, and is three the outside of sinle silk all with conductor shield circle fixed connection, the outside cover of conductor shield circle is equipped with the insulation shield circle, it has the insulating layer to fill between insulation shield circle and the conductor shield circle, the material of conductor shield circle and insulation shield circle is rubber insulation, the material of insulating layer is fluoroplastics.

The fluoroplastic has the beneficial effects that the fluoroplastic has the outstanding characteristics of excellent electrical insulation performance, good flame retardance, high oxygen index, small flame diffusion range during combustion and less generated smoke, and can realize a certain isolation effect on a cable in case of fire or electric leakage and avoid current and flame diffusion.

Furthermore, the supporting assembly comprises a rubber sleeve sleeved outside the insulating shielding ring, six elastic rolls are arranged inside the rubber sleeve, the elastic rolls are designed in a spiral shape, the outer sides of the six elastic rolls are fixedly connected with the core rod, and the elastic rolls and the core rod are made of NBR rubber foam.

Adopt above-mentioned further scheme's beneficial effect is that, because NBR rubber foam is high elastic material, the rubber sleeve possesses certain resilience, and after kaolin runs off, the resilience is rolled up the resilience and is expanded and prop up the rubber sleeve, can make three insulating shield circle hug closely all the time with between the band, prevents to produce the space between the three insulating shield circle after the kaolin runs off, rubs mutually.

Furthermore, the first protection assembly comprises three wrapping belts sleeved on the outer sides of the insulation shielding rings, kaolin is filled in the wrapping belts, and steel belt armoring is sleeved on the outer sides of the wrapping belts.

The beneficial effect of adopting above-mentioned further scheme is that, because kaolin has good physical and chemical properties such as plasticity and fire resistance, can play certain isolation effect to the cable when catching fire, prevent that flame from burning first rubber sheath and second rubber sheath, the steel band armor also can prevent that the mouse from continuing to bite into the core part of this cable after stinging through first rubber sheath and second rubber sheath.

Further, the second protection component comprises a first rubber sheath sleeved outside the steel-tape armor, a plurality of extrusion holes are formed in the first rubber sheath, a supporting block is fixedly connected to the inside of each extrusion hole and is of a W-shaped design, and the supporting block is made of high-strength rubber.

Adopt above-mentioned further scheme's beneficial effect to be, receive the extrusion back when first rubber sheath, the supporting shoe atress is compressed, and W type structure and self material through the supporting shoe cooperate mutually, can play certain elasticity supporting effect to receiving extruded first rubber sheath.

Further, the third protection component comprises a second rubber sheath sleeved outside the first rubber sheath, a plurality of air bag grooves are formed in the second rubber sheath, and the front air bag groove and the rear air bag groove are adjacent and separated by rubber retaining pieces.

Adopt above-mentioned further scheme's beneficial effect is because gasbag groove has wrapped up the outside air among them when second rubber sheath production, so the inside of every gasbag groove has formed individual small-size gasbag, can take the lead to extrude second rubber sheath when this cable receives the external world and extrudees, and the elasticity that second rubber sheath formed through the gasbag groove can offset the pressure that the external world was exerted.

Drawings

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

FIG. 2 is a front view of the current core assembly of the present invention;

FIG. 3 is a front view of the support assembly of the present invention;

FIG. 4 is a right side sectional view of a third protective assembly in accordance with the present invention.

In the figure: 1. an electrical core assembly; 11. a wire core; 12. a conductor shield ring; 13. an insulating shield ring; 14. an insulating layer; 2. a support assembly; 21. a rubber sleeve; 22. elastic rolling; 23. a core bar; 3. a first guard assembly; 31. wrapping belts; 32. kaolin; 33. steel tape armoring; 4. a second guard assembly; 41. a first rubber sheath; 42. extruding the hole; 43. a support block; 5. a third protection component; 51. a second rubber sheath; 52. an air bag groove; 53. a rubber baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment, as shown in fig. 1-4, an ultra-high voltage cable with high protection performance includes three core assemblies 1, the core assembly 1 includes three core wires 11 attached to each other, the outer sides of the three core wires 11 are all fixedly connected to a conductor shielding ring 12, the outer side of the conductor shielding ring 12 is sleeved with an insulation shielding ring 13, an insulation layer 14 is filled between the insulation shielding ring 13 and the conductor shielding ring 12, the conductor shielding ring 12 and the insulation shielding ring 13 are both made of rubber insulation materials, the insulation layer 14 is made of fluoroplastics, which is characterized by excellent electrical insulation performance, good flame retardance, high oxygen index, small flame diffusion range during combustion, less smoke generated, capable of performing a certain isolation effect on the cable during ignition or leakage, avoiding current and flame diffusion, the outer sides of the three core assemblies 1 are all movably connected to a supporting assembly 2, the supporting component 2 comprises a rubber sleeve 21 sleeved outside the insulating shielding rings 13, six elastic rolls 22 are arranged inside the rubber sleeve 21, the elastic rolls 22 are designed in a spiral shape, the outer sides of the six elastic rolls 22 are fixedly connected with a core rod 23, the elastic rolls 22 and the core rod 23 are made of NBR rubber foam, the NBR rubber foam is made of high-elasticity materials, the rubber sleeve 21 has certain resilience, when kaolin 32 is lost, the elastic rolls 22 rebound and expand to support the rubber sleeve 21, namely the three insulating shielding rings 13 are always tightly attached to the wrapping belt 31, gaps are prevented from being generated among the three insulating shielding rings 13 after the kaolin 32 is lost, friction is performed among the three insulating shielding rings, the first protecting component 3 is arranged outside the three battery components 1, the first protecting component 3 comprises the wrapping belt 31 sleeved outside the three insulating shielding rings 13, and the wrapping belt 31 is filled with the kaolin 32, the outside of the belting 31 is sleeved with the steel-belt armor 33, because the kaolin 32 has good physical and chemical properties such as plasticity, fire resistance and the like, a certain isolation effect can be achieved on a cable in a fire, the first rubber sheath 41 and the second rubber sheath 51 are prevented from being burnt by flame, the steel-belt armor 33 can also prevent a mouse from continuously biting into core components of the cable after biting through the first rubber sheath 41 and the second rubber sheath 51, the outside of the first protection component 3 is sleeved with the second protection component 4, the second protection component 4 comprises the first rubber sheath 41 sleeved on the outside of the steel-belt armor 33, a plurality of extrusion holes 42 are formed in the first rubber sheath 41, a support block 43 is fixedly connected in the extrusion holes 42, the support block 43 is in a W-shaped design, the support block 43 is made of high-strength rubber, when the first rubber sheath 41 is extruded, the support block 43 is compressed under stress, the W-shaped structure of the supporting block 43 is matched with the material of the supporting block, the first rubber sheath 41 which is extruded can have a certain elastic supporting effect, the outer side of the second protection component 4 is sleeved with the third protection component 5, the third protection component 5 comprises a second rubber sheath 51 which is sleeved on the outer side of the first rubber sheath 41, a plurality of air bag grooves 52 are arranged in the second rubber sheath 51, the front and the back adjacent air bag grooves 52 are separated by the rubber retaining sheet 53, since the air bag groove 52 has enclosed the outside air therein at the time of production of the second rubber sheath 51, therefore, each small air cell is formed inside each air cell groove 52, when the cable is pressed by the outside, the second rubber sheath 51 is firstly pressed, and the pressure applied by the outside can be counteracted by the second rubber sheath 51 through the elastic force formed by the air cell grooves 52.

The working principle is as follows:

the first step is as follows: the fluoroplastic has the outstanding characteristics of excellent electrical insulation performance, good flame retardance, high oxygen index, small flame diffusion range during combustion and less generated smoke, can perform a certain isolation effect on a cable in case of fire or electric leakage, and avoids current and flame diffusion, and because the kaolin 32 has good physical and chemical properties such as plasticity, fire resistance and the like, the cable in case of fire can be isolated to a certain extent, flame combustion of the first rubber sheath 41 and the second rubber sheath 51 is prevented, and the steel-tape armor 33 can also prevent a mouse from biting the core part of the cable continuously after biting through the first rubber sheath 41 and the second rubber sheath 51;

the second step is that: because the NBR rubber foam is a high-elasticity material, the rubber sleeve 21 has certain resilience, and when the kaolin 32 is lost, the elastic roll 22 rebounds and unfolds and supports the rubber sleeve 21, so that the three insulation shielding rings 13 can be always attached to the bag belt 31, and gaps are prevented from being generated among the three insulation shielding rings 13 after the kaolin 32 is lost and the three insulation shielding rings are mutually rubbed;

the third step: because the air bag groove 52 wraps the outside air in the air bag groove when the second rubber sheath 51 is produced, a small air bag is formed in each air bag groove 52, when the cable is extruded by the outside, the second rubber sheath 51 can be extruded first, the pressure applied by the outside can be offset by the elastic force formed by the air bag groove 52 of the second rubber sheath 51, after the first rubber sheath 41 is extruded, the supporting block 43 is compressed by stress, and the W-shaped structure and the self material of the supporting block 43 are matched with each other, so that a certain elastic supporting effect can be achieved on the extruded first rubber sheath 41.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an extra-high voltage cable that protectiveness is high, includes that quantity is three electric core subassembly (1), its characterized in that: it is three the outside of electricity core subassembly (1) all with supporting component (2) swing joint, three the outside of electricity core subassembly (1) is provided with first protection component (3), the outside cover of first protection component (3) is equipped with second protection component (4), the outside cover of second protection component (4) is equipped with third protection component (5).

2. A highly protective extra high voltage cable according to claim 1, characterized in that: electric core subassembly (1) includes three sinle silk (11) of laminating mutually, and is three the outside of sinle silk (11) all with conductor shield circle (12) fixed connection, the outside cover of conductor shield circle (12) is equipped with insulating shield circle (13), it has insulating layer (14) to fill between insulating shield circle (13) and conductor shield circle (12), the material of conductor shield circle (12) and insulating shield circle (13) is rubber insulation, the material of insulating layer (14) is fluoroplastics.

3. A highly protective extra high voltage cable according to claim 2, characterized in that: the supporting assembly (2) comprises a rubber sleeve (21) sleeved on the outer side of the insulating shielding ring (13), six elastic coils (22) are arranged inside the rubber sleeve (21), the elastic coils (22) are designed in a spiral shape, the outer sides of the six elastic coils (22) are fixedly connected with a core rod (23), and the elastic coils (22) and the core rod (23) are made of NBR rubber foam.

4. A highly protective extra high voltage cable according to claim 3, characterized in that: the first protection assembly (3) comprises three wrapping belts (31) sleeved outside the insulation shielding rings (13), kaolin (32) is filled in the wrapping belts (31), and steel tape armors (33) are sleeved outside the wrapping belts (31).

5. A highly protective extra high voltage cable according to claim 4, characterized in that: the second protection component (4) comprises a first rubber sheath (41) sleeved outside the steel-belt armor (33), a plurality of extrusion holes (42) are formed in the first rubber sheath (41), a supporting block (43) is fixedly connected to the inside of each extrusion hole (42), the supporting block (43) is designed in a W shape, and the supporting block (43) is made of high-strength rubber.

6. A highly protective extra-high voltage cable according to claim 5, characterized in that: the third protection component (5) comprises a second rubber sheath (51) sleeved outside the first rubber sheath (41), a plurality of air bag grooves (52) are formed in the second rubber sheath (51), and the front and the back of the air bag grooves are adjacent to each other and are separated from each other through rubber retaining pieces (53) between the air bag grooves (52).