CN120108825A - An anti-interference flame-retardant cable - Google Patents
An anti-interference flame-retardant cable Download PDFInfo
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- CN120108825A CN120108825A CN202510331859.9A CN202510331859A CN120108825A CN 120108825 A CN120108825 A CN 120108825A CN 202510331859 A CN202510331859 A CN 202510331859A CN 120108825 A CN120108825 A CN 120108825A
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- tape
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
本发明公开了一种抗干扰阻燃型电缆，涉及电力电缆技术领域，其技术方案要点是：包括由橡胶外护套、金属铠装及保护机构构成的外保护层和包带、防火层及防水绝缘层构成内保护层，还包括包裹于防水绝缘层内的多组导芯，所述橡胶外护套、金属铠装及保护机构和包带、防火层及防水绝缘层均按由外到内依次设置，本发明中电缆通过由多个环形组件构成的保护机构将电缆整体层级进行有效的划分，环形组件的金属环形座，可以抵御电缆由外部直接产生的压力，在电缆外部产生扭力时，多个环形座将通过之间的弹簧弹缓冲外部的扭力，且较大程度降低了对内保护层的影响，再者，在电缆连接时，可通过环形组件的转动结构，可对内保护层的位置进行微调，对电缆的连接进行精确。
The invention discloses an anti-interference flame-retardant cable, which relates to the technical field of power cables. The key points of the technical solution are: it includes an outer protective layer and a wrapping tape composed of a rubber outer sheath, a metal armor and a protection mechanism, a fireproof layer and a waterproof insulation layer to form an inner protective layer, and also includes a plurality of groups of guide cores wrapped in the waterproof insulation layer. The rubber outer sheath, the metal armor and the protection mechanism and the wrapping tape, the fireproof layer and the waterproof insulation layer are arranged in sequence from the outside to the inside. In the invention, the cable is effectively divided into the overall levels of the cable through a protection mechanism composed of a plurality of annular components. The metal annular seat of the annular component can resist the pressure directly generated by the cable from the outside. When torque is generated outside the cable, the plurality of annular seats will buffer the external torque through the springs between them, and greatly reduce the influence on the inner protective layer. Furthermore, when the cable is connected, the position of the inner protective layer can be fine-tuned through the rotating structure of the annular component, and the cable connection can be accurate.
Description
Technical Field
The invention relates to the technical field of power cables, in particular to an anti-interference flame-retardant cable.
Background
The cable is an electric energy or signal transmission device, can be divided into a power cable, a communication cable and a control cable according to purposes, can be divided into a single-core cable, a multi-core cable and a shielding cable according to construction classification, wherein a plurality of structural layers are arranged in the cable, certain differences exist among different cable structural layers according to application conditions, and the cable of the type realizes power/signal transmission and improves the high temperature resistance and the interference shielding effect of the cable by reinforcing the flame-retardant structural layers and the anti-interference structural layers in the cable;
The cable has good anti-interference and flame-retardant effects, but because the internal structure of the cable is relatively fixed, the cable is subjected to protection, especially stress before, after and during installation, particularly stress before and during installation, when the cable is dragged or the installation position is adjusted, the cable is inevitably subjected to downward pressure generated by manual stepping and inertia force generated by swinging at two sides of the cable, torsion generated by rotation during position adjustment, and acting force generated by different wind directions after installation;
All adopt integral type parcel structure to the cable on the market at present, when the atress, mainly be through the soft and resilient characteristic of rubber oversheath matter, provide the protection to the cable, to the rubber sleeve, although can provide the protection to the cable, nevertheless there is certain limitation, when the rubber sleeve atress, the transmission of force is comparatively direct on the one hand, also can cause the influence of certain degree to cable inner structure, on the other hand, when receiving wind-force, can play the cushioning effect through rubber sleeve self characteristic, but rubber atress influences for a long time, rubber stretching fatigue phenomenon also can appear, rebound efficiency is not good, can not guarantee the linear state of cable, influence the transmission of electric power.
Therefore, in order to solve the technical problems, the application provides an anti-interference flame-retardant cable.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an anti-interference flame-retardant cable.
The anti-interference flame-retardant cable comprises an outer protective layer, an inner protective layer, a plurality of groups of guide cores, wherein the outer protective layer is composed of a rubber outer sheath, a metal armor and protection mechanism, the inner protective layer is composed of a tape, a fireproof layer and a waterproof insulating layer, the plurality of groups of guide cores are wrapped in the waterproof insulating layer, the rubber outer sheath, the metal armor and protection mechanism, the tape, the fireproof layer and the waterproof insulating layer are sequentially arranged from outside to inside, the protection mechanism comprises a plurality of groups of annular components which are used for integrally wrapping the inner protective layer, elastic pieces which are arranged among the plurality of groups of annular components and used for connecting the plurality of groups of annular components, the annular components comprise an annular seat and annular pieces which are rotatably connected to the inner end face of the annular seat and are in contact with the inner protective layer, and a plurality of groups of annular components are respectively provided with a crosslinked polyethylene layer which is attached through a chemical coupling agent.
Preferably, the wrapping belt is any one of a glass fiber belt, a semi-conductive cloth belt and a non-woven fabric belt, and an anti-interference layer which is integrally wrapped by a metal sheet is arranged between the wrapping belt and the fireproof layer.
Preferably, the fireproof layer is any one of ceramic silicone rubber, flame-retardant paper tape and flame-retardant yarn tape, the waterproof insulating layer is any one of polyethylene, expandable coconut fiber, waterproof tape and waterproof paste, and a semiconductive shielding layer is arranged between the waterproof insulating layer and the guide core and is any one of semiconductive polyethylene, semiconductive rubber and semiconductive gauze.
Preferably, the annular seat and the annular sheet are both made of metal, a chute a is arranged at the inner end surface of the annular seat, and a chute b used for limiting the annular sheet is arranged on the seat body at two sides of the chute a.
Preferably, a plurality of groups of spherical parts for driving the annular pieces to rotate are circumferentially arranged on the end surface of the annular pieces, which is embedded with the chute a, and each group of spherical parts is at least two and is in a transverse arrangement structure.
Preferably, two sides of the gaps between the spherical parts are provided with spheres a which are embedded with the sliding grooves b, and the spheres a are embedded in spherical slotted holes arranged on the embedded end surfaces of the annular sheets.
Preferably, the ball-shaped member comprises a ball sleeve connected to the embedded end surface of the annular piece and a ball b embedded in the ball sleeve and contacted with the bottom surface of the chute a, and the ball b and the ball a are both made of metal balls.
Preferably, the elastic piece is circumferentially arranged on the side wall of the annular seat and is used for linearly connecting multiple groups of annular components, and the elastic piece comprises a connecting seat arranged on the side wall of the annular component and springs connected between the two groups of connecting seats.
Preferably, the elastic pieces are distributed in an inclined mirror image mode, and the end faces of the connecting seats, connected with the springs, are inclined faces.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, the cable is effectively divided into the whole layers by the protection mechanism formed by the plurality of annular assemblies, the metal annular seats of the annular assemblies can resist the pressure generated by the cable directly from the outside, and meanwhile, the annular seats and the annular plates are in a rotating structure, so that the relative rotation between the inner protective layer and the outer protective layer can be realized, when the torsion is generated outside the cable, the plurality of annular seats provide buffering through the springs between the annular seats, the influence on the inner protective layer is greatly reduced, and furthermore, when the cable is connected, the positions of the inner protective layer can be finely adjusted by the characteristic of the relative rotation of the annular assemblies, and the connection of the cable is accurate.
2. According to the invention, after the cable is in linear connection, the annular components are connected through the springs distributed in the inclined mirror images, so that on one hand, the overall balance and stability of the cable can be ensured, and on the other hand, when the cable is influenced by wind power in different directions, the annular components are in soft connection through the springs, acting forces generated by different wind directions can be resisted and buffered, meanwhile, in the process of reducing the acting forces to stop, the springs can drive the cable to reset quickly, and in the process of resetting, the external rubber sleeve is driven to reset quickly, so that the normal circulation of electric power is ensured, and meanwhile, the protection is provided for the rubber sleeve.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is an overall construction diagram of a cable according to the present invention;
FIG. 2 is an overall front view of the cable of the present invention;
FIG. 3 is a block diagram of the cable internal protection mechanism of the present invention;
FIG. 4 is an enlarged view of the portion A of FIG. 3 in accordance with the present invention;
FIG. 5 is an enlarged view of the portion B of FIG. 3 in accordance with the present invention;
FIG. 6 is a schematic view of the protection mechanism of the present invention under different forces;
FIG. 7 is an overall block diagram of the annular assembly of the present invention;
FIG. 8 is an overall exploded view of the annular assembly of the present invention;
FIG. 9 is an enlarged view of FIG. 8 at C in accordance with the present invention;
FIG. 10 is a diagram showing the positional relationship of a metal sheet according to the present invention;
fig. 11 is a positional relationship diagram of a semiconductive shield according to the present invention.
1. Rubber outer sheath, 2, metal armor, 3, protection mechanism, 4, belting, 5, fireproof layer, 6, waterproof insulating layer, 7, guide core, 8, annular component, 9, elastic piece, 901, connecting seat, 902, spring, 10, annular seat, 1001, chute a, 1002, chute b, 11, annular piece, 1101, sphere a, 1102, sphere cover, 1103, sphere b, 12, metal sheet, 13, semiconductive shielding layer.
Detailed Description
As shown in fig. 1-11, the invention provides an anti-interference flame-retardant cable, which comprises an outer protective layer formed by a rubber outer sheath 1, a metal armor 2 and a protective mechanism 3, an inner protective layer formed by a wrapping tape 4, a fireproof layer 5 and a waterproof insulating layer 6, and a plurality of groups of guide cores 7 wrapped in the waterproof insulating layer 6, wherein the rubber outer sheath 1, the metal armor 2, the protective mechanism 3, the wrapping tape 4, the fireproof layer 5 and the waterproof insulating layer 6 are sequentially arranged from outside to inside;
The wrapping tape 4 is any one of a glass fiber tape, a semi-conductive cloth tape and a non-woven fabric tape, as shown in fig. 10, an anti-interference layer which is integrally wrapped by a metal sheet 12 is arranged between the wrapping tape 4 and the fireproof layer 5, on one hand, the wrapping tape 4 needs to have stability and compactness for integrally wrapping an inner protective layer, and also needs to have the effects of corrosion resistance and high temperature resistance, on the basis of the effects, the wrapping tape 4 of a corresponding material needs to be selected adaptively based on the use of a cable and different layer structures, the metal such as copper, aluminum, tungsten and the like can be selected as the material of the metal sheet 12, and the anti-interference effect is achieved, and meanwhile, the adaptive selection can be performed according to the characteristics of the metal;
Meanwhile, the fireproof layer 5 is any one of ceramic silicone rubber, flame-retardant paper tape and flame-retardant yarn tape, the waterproof insulating layer 6 is any one of polyethylene, expandable coconut fiber, waterproof tape and waterproof paste, as shown in fig. 11, a semiconductive shielding layer 13 is arranged between the waterproof insulating layer 6 and the conductive core 7, the semiconductive shielding layer 13 is any one of semiconductive polyethylene, semiconductive rubber and semiconductive gauze, the fireproof layer 5 mainly tends to be flame-retardant, materials with smaller heat conductivity coefficient need to be selected, and meanwhile, the fireproof layer 5 is not limited to the ceramic silicone rubber, flame-retardant paper tape and flame-retardant yarn tape, and the fireproof layer is specific according to the application scene and environment of the cable;
Further, the waterproof insulating layer 6 mainly protects the guide core 7, and the waterproof insulating layers 6 of different materials have different effects, specifically comprise mechanical resistance, waterproof and dampproof, improve cable shape, prevent interference, reduce noise, and the like, and the materials of the layer are selected or adaptively selected based on the use and layer structure of the cable, and optionally comprise lipid fillers such as polyethylene, polyvinyl chloride, polyurethane, and the like, or optionally foam materials (polystyrene foam), mineral additives (asbestos, inorganic mineral materials), water resistance materials (expanded polymers), and the like, and are specifically combined with practical application adaptability selection of the cable;
the semi-conductive shielding layer 13 is based on the protection of the waterproof insulating layer 6, and performs secondary protection on the guide core 7, such as electromagnetic interference shielding, uniform electric field distribution, electric leakage reduction and the like, so as to ensure the stability of power transmission;
When the cable realizes the anti-interference and flame-retardant effects, the resistance of the cable needs to be further improved, as shown in fig. 3, 4, 5 and 6, the integral resistance effect of the cable is enhanced by the protection mechanism 3 arranged between the metal armor 2 and the wrapping belt 4, and the protection mechanism 3 comprises a plurality of groups of annular assemblies 8 which are used for integrally wrapping the inner protection layer and elastic pieces 9 which are arranged between the plurality of groups of annular assemblies 8 and used for connecting the plurality of groups of annular assemblies 8;
Further, in order to achieve the overall protection effect on the inner protection layer, as shown in fig. 3, the protection mechanism 3 adopts an annular structure matched with the cable, the annular assembly 8 comprises an annular seat 10 and an annular sheet 11 rotationally connected to the inner end surface of the annular seat 10 and contacted with the inner protection layer, the annular sheet 11 and the annular seat 10 are of independent structures, the annular sheet 11 can perform circular motion on the annular seat 10, meanwhile, the annular sheet 11 is also a contact end of the annular assembly 8 and the inner protection layer, so that two independent areas are formed between the outer protection layer and the inner protection layer, and the annular sheet 11 is taken as a segmentation end, as shown in fig. 6, when the cable rotates to generate torsion force F τ, the outer protection layer will not influence the inner protection layer in a straight state, and when the cable is bent in a small amplitude, the inner protection layer in a part of the areas will receive small acting force, meanwhile, when the cable is connected, the inner protection layer can be integrally adjusted through relative rotation between the annular seat 10 and the annular sheet 11 according to the specific connection position of the guide core 7, so that the connection accuracy of the guide core 7 is ensured;
based on the above, in order to achieve the effect of rotating the annular piece 11 and the annular seat 10 and the resistance of the annular seat 10 itself, as shown in fig. 6, 8 and 9, a sliding groove a1001 is provided at the inner end surface of the annular seat 10, and sliding grooves b1002 for limiting the annular piece 11 are provided on the seat bodies at both sides of the sliding groove a 1001;
Further, in order to achieve the suitability of rotation with the annular seat 10 and ensure the stability of the annular piece 11 in the rotation process, as shown in fig. 7 and 8, a plurality of groups of spherical pieces for driving the annular piece 11 to rotate are circumferentially arranged on the end surface of the annular piece 11, which is embedded with the chute a1001, at least two spherical pieces of each group are arranged in a transverse arrangement structure, meanwhile, two sides of a gap between the plurality of groups of spherical pieces are provided with spherical bodies a1101 embedded with the chute b1002, and the spherical bodies a1101 are embedded in spherical slotted holes arranged on the embedded end surface of the annular piece 11;
Specifically, the ball-shaped member includes a ball sleeve 1102 connected to the embedded end surface of the ring-shaped piece 11 and a ball b1103 embedded in the ball sleeve 1102 and contacting the bottom surface of the chute a1001, the ball b1103 and the ball a1101 are both metal balls, the rotation of the ring-shaped piece 11 on the ring-shaped seat 10 involves two different positions, namely, the rotation of the chute a1001 in the notch and the groove, both adopt a ball-shaped rolling form, the materials of the ring-shaped seat 10, the ring-shaped piece 11, the ball sleeve 1102, the ball a1101 and the ball b1103 can be steel, copper or better alloy materials, more involves the position adjustment of the torsion force F τ and the guide core 7 generated by the rotation of the cable due to the rotation of the ring-shaped piece 11, and the rotation of the ring-shaped assembly 8 involves less force in other directions, especially after the connection of the cable;
It should be noted that, since the annular seat 10 is made of metal, when the cable is idle, the annular seat 10 can resist the acting force directly generated from the outside to provide effective protection for the inner protection layer, meanwhile, in order to improve the contact tightness between the annular sheet 11 and the strap 4, the end surface of the annular sheet 11, which contacts the strap 4, can be provided with an integral particle protrusion, or a friction-improving anti-slip layer, such as a rubber layer, a nylon layer, etc., is added on the contact surface of the strap 4, and the interval between the annular seats 10 needs to be adaptively adjusted according to the cable length, the stress environment and the structure of the elastic member 9;
Furthermore, in order to adapt the resistance of the cable after connection, as shown in fig. 3, 4, 5 and 6, the elastic members 9 for connection between the plurality of groups of annular components 8 are circumferentially arranged on the side walls of the annular seat 10 for linear connection between the plurality of groups of annular components 8;
specifically, as shown in fig. 4 and 6, the elastic member 9 mainly connects the plurality of groups of annular components 8 in a soft manner, so that the linearity of the cable is ensured, and meanwhile, the acting forces generated by the cable in different directions can be adapted and buffered, including the acting force F x、Fy in fig. 6 and the acting force F x-y in different directions between the acting forces F x and the acting force F y;
The elastic piece 9 comprises connecting seats 901 arranged on the side wall of the annular component 8 and springs 902 connected between the two groups of connecting seats 901, and the number and types of the springs 902 are based on the requirement of adaptive selection according to the size, the type and the application scene of the cable;
Furthermore, the plurality of groups of elastic elements 9 are distributed in an inclined mirror image manner, the end surfaces of the connecting seats 901, which are connected with the springs 902, are inclined surfaces, and the elastic elements 9 distributed in the inclined mirror image manner can provide better balance and stability for the protection mechanism 3 and the whole cable, and can better share the acting force generated between the springs 902;
in order to avoid the heat conduction effect between the inner and outer protective layers, the annular component 8 is provided with a crosslinked polyethylene layer which is attached by a chemical coupling agent, and the annular seat 10 and the annular piece 11 which are made of metal are respectively isolated from the inner and outer protective layers by the crosslinked polyethylene layer, so that the annular component 8 is an independent part which does not affect the inner and outer protective layers;
To sum up, the cable divides outer protective layer and inner protective layer through protection machanism 3, based on the external pressure that produces before the cable installation and in the installation or rotatory torsion, can directly resist the outside to the annular seat 10 self of metal material and produce effort, because realized the district segmentation through rotating structure between outer protective layer and the inner protective layer, because rotatory torsion F τ is the direct production of cable outside, the same/different direction torsion F τ, can cushion through the spring 902 between the annular seat 10 of rubber oversheath 1 cooperation, after the effort, spring 902 also can drive rubber oversheath 1 fast and carry out deformation reset, receive torsion F τ time, the inner protective layer is under annular seat 10 and annular piece 11 relative rotation effect, the influence of outer protective layer to the inner protective layer is less, thereby provide effectual protection to the inner protective layer, based on relative rotation, when cable connection, also can finely tune the inner protective layer hookup location through rotating, ensure the connection accuracy, after having avoided cable overall adjustment to cause loaded down with each other, when receiving different direction wind power F x、Fy and F x-y influence and wind-force to cable regional influence, multiunit spring effect, can not produce the cable deformation reset under the effect on the cable, can not produce the cable protection effect at the same time, can not cause fatigue protection structure, can not cause the deformation to the cable is simultaneously, can be realized, and the cable is deformed under the circumstances of the impact on the cable is reduced, can not be simultaneously, can be reduced, the impact to the cable protection is realized, and can not be deformed under the impact on the cable protection is deformed, can be at the protection, can be deformed, and can be deformed.
The present invention is not limited to the preferred embodiments, and can be smoothly implemented by those skilled in the art according to the description and the drawings, but the equivalent changes, modifications and evolution of the present invention can be achieved by those skilled in the art without departing from the technical scope of the present invention, and meanwhile, the equivalent changes, modifications and evolution of the present invention according to the essential technology of the present invention are still within the scope of the technical scheme of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510331859.9A CN120108825B (en) | 2025-03-20 | 2025-03-20 | Anti-interference flame-retardant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510331859.9A CN120108825B (en) | 2025-03-20 | 2025-03-20 | Anti-interference flame-retardant cable |
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| Publication Number | Publication Date |
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| CN120108825A true CN120108825A (en) | 2025-06-06 |
| CN120108825B CN120108825B (en) | 2025-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202510331859.9A Active CN120108825B (en) | 2025-03-20 | 2025-03-20 | Anti-interference flame-retardant cable |
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| CN (1) | CN120108825B (en) |
Cited By (1)
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| CN120636912A (en) * | 2025-07-28 | 2025-09-12 | 穿越电缆集团有限公司 | A cross-linked polyethylene insulated cable with a protective structure |
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| CN120636912B (en) * | 2025-07-28 | 2026-01-27 | 穿越电缆集团有限公司 | Crosslinked polyethylene insulated cable with protective structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN120108825B (en) | 2025-09-12 |
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