CN224052893U - Explosion-proof high flame retardant special cable - Google Patents
Explosion-proof high flame retardant special cableInfo
- Publication number
- CN224052893U CN224052893U CN202520725613.5U CN202520725613U CN224052893U CN 224052893 U CN224052893 U CN 224052893U CN 202520725613 U CN202520725613 U CN 202520725613U CN 224052893 U CN224052893 U CN 224052893U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof
- core
- cable
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses an explosion-proof high-flame-retardance special cable which comprises a cable core and an outer protective layer wrapping the outer surface of the cable core, wherein the cable core comprises 5 wire cores, explosion-proof filler is arranged at a gap between the wire core and the wire core in the cable core, the outer protective layer comprises two layers of explosion-proof jackets which are an inner jacket and an outer jacket respectively, and the inner jacket and the outer jacket are intrinsic safety low-smoke halogen-free polyolefin jackets. The explosion-proof cable disclosed by the utility model has the beneficial effects that the explosion-proof filler is arranged in the cable core of the cable, the two layers of explosion-proof jackets are arranged in the outer protective layer, so that the explosion caused by internal sparks or electric arcs can be effectively prevented, and meanwhile, the two layers of explosion-proof jackets are arranged as physical isolation layers, so that the sparks or high temperature generated by short circuit and overload in the cable are prevented from directly contacting with external explosive gas. The two cooperate to fundamentally reduce the explosion risk.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to an explosion-proof high-flame-retardance special cable.
Background
With the acceleration of the industrialization process, the safety production consciousness is increasingly deep, and the market demand of the explosion-proof high-flame-retardance special cable presents a continuously rising situation. The cable is widely applied in petrochemical industry, mine, pharmacy and other high-risk industries. Meanwhile, the continuous progress of technology and the continuous demands of markets push the development of the explosion-proof high-flame-retardance special cable to continue deep, novel products are continuously emerging, the performance is gradually improved, and the application range is also continuously expanded.
The explosion-proof high-flame-retardance special cable is specially designed for flammable and explosive places, and has the core function of realizing stable transmission of power and signals on the premise of ensuring safety. In the design and manufacturing process, the cable adopts special materials and processes, so that the insulation and sheath performances of the cable are not affected under the complex working conditions of high temperature, high voltage, corrosion, friction and the like, and fire or explosion accidents caused by cable faults are effectively avoided.
In the industrial scenes such as mines, petrochemical industry, ship yards and the like, a large amount of inflammable and explosive gas and dust are filled in the environment, and extremely severe requirements are put on the safety of cables. The existing explosion-proof cable has a certain explosion-proof performance, but has obvious short plates in the aspects of flame retardance, mechanical strength and capability of coping with extreme conditions. Once a fault occurs, the generated arc and spark are extremely easy to cause explosion, and serious life and property loss is caused. Therefore, the development of a cable with excellent performances in the aspects of flame retardance, explosion prevention, high temperature resistance, corrosion resistance and the like is an urgent need for ensuring the safe production of high-risk environments.
Disclosure of utility model
The utility model aims to provide an explosion-proof high-flame-retardance special cable, which solves the problem that the existing explosion-proof cable is insufficient in safety in flammable and explosive places, and can still maintain safe and stable operation of the system under extreme conditions of high temperature, electric arc, flammable gas and the like, thereby effectively preventing explosion caused by cable faults.
In order to achieve the above purpose, the technical scheme of the utility model provides an explosion-proof high-flame-retardance special cable, which comprises a cable core and an outer protective layer wrapped on the outer surface of the cable core, wherein the cable core comprises 5 wire cores, is of a 4+1 core structure, the 4 core is a main wire core, the 1 core is a ground wire, an explosion-proof filler is arranged at a gap between the wire core and the wire core in the cable core, the outer protective layer is of a multilayer structure and comprises two layers of explosion-proof jackets, namely an inner protective sleeve and an outer protective sleeve, and the inner protective sleeve and the outer protective sleeve are intrinsic safety low smoke halogen-free polyolefin protective sleeves.
Further, the 4 cores in the 4+1 core structure are in a fan-shaped structure, and the 1 cores in the 4+1 core structure are in a circular structure.
Further, the 4 cores in the 4+1 core structure are composed of 3 phase lines+1 zero lines.
Further, the wire core is of a 3-layer structure and comprises a conductor positioned at the center of the wire core, a fire-resistant layer is wrapped outside the conductor, and an insulating layer is wrapped outside the fire-resistant layer.
The heat-resistant composite copper wire is characterized in that the heat-resistant composite copper wire is a type 2 annealed compressed copper wire, and is formed by twisting and compressing a plurality of strands of copper wires, the fire-resistant layer is a synthetic mica tape, and the insulating layer is a crosslinked polyethylene layer.
Further, the explosion-proof filler is a glass fiber filler.
Further, the outer protective layer structure is provided with 6 layers, and the outer protective layer structure sequentially comprises a wrapping belt, a waterproof layer, a waterproof belt, an inner sheath, an armor and an outer sheath from inside to outside.
Further, the wrapping belt is a layer of ceramic silicon rubber belt, and the waterproof layer is a PE sheath.
Further, the armor is a two-layer galvanized steel strip.
Further, the cross-sectional shapes of the cable core and the cable are circular.
In summary, the device has reasonable structural design, and the technical scheme of the utility model has the beneficial effects that the explosion-proof filler is arranged in the cable core of the cable, the two layers of explosion-proof jackets are arranged in the outer protective layer, so that the explosion caused by internal sparks or electric arcs can be effectively prevented, and meanwhile, the two layers of explosion-proof jackets are arranged as physical isolation layers, so that the sparks or high temperature generated by short circuit and overload in the cable are prevented from directly contacting with external explosive gases. The two cooperate to fundamentally reduce the explosion risk.
Drawings
FIG. 1 is a schematic cross-sectional view of an explosion-proof high flame-retardant special cable of the utility model;
The reference numerals indicate 1-conductor, 2-fire-resistant layer, 3-insulating layer, 4-explosion-proof filler, 5-belting, 6-waterproof layer, 7-waterproof belt, 8-inner sheath, 9-armor and 10-outer sheath.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, but the scope of protection of the present utility model is not limited.
In the present utility model, for the sake of more clear description, it is explained that the observer looks at fig. 1, the observer's left front side is set to front, the observer's right rear side is set to rear, the observer's left rear side is set to left, the observer's right front side is set to right, the observer's upper side is set to top, the observer's lower side is set to bottom, it should be noted that the terms "front", "rear", "left", "right", "middle", "upper", "lower" etc. indicate the orientation or positional relationship in this text are based on the orientation or positional relationship set in the drawings, only for the convenience of clearly describing the present utility model, but do not indicate or imply that the structure or component to be referred to must have a specific orientation, be constructed in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," "fourth" and the like are used for clarity or to simplify the description, and are not to be construed as indicating or implying a relative importance or quantity.
The explosion-proof high-flame-retardance special cable is an important special cable, and plays a vital role in ensuring the safety production and personnel life safety in flammable and explosive environments. With the rapid development of industrial automation and intelligent manufacturing and the increasingly strict environmental protection regulations, the market demand of the explosion-proof high-flame-retardance special cable is continuously increased, and the industrial development prospect is wide.
Referring to fig. 1, the utility model provides an explosion-proof high-flame-retardance special cable, which comprises a cable core and an outer protective layer wrapped on the outer surface of the cable core, wherein the cable core comprises 5 wire cores, a 4+1 core structure, 4 cores are main wire cores, 1 core is a ground wire, an explosion-proof filler 4 is arranged at a gap between the wire cores in the cable core, the outer protective layer is of a multi-layer structure and comprises two layers of explosion-proof jackets, namely an inner jacket 8 and an outer jacket 10, respectively, and the inner jacket 8 and the outer jacket 10 are intrinsic safety low-smoke halogen-free polyolefin jackets.
Specifically, 4 cores in the 4+1 core structure are sector structures, and 1 core is a circular structure. Specifically, the 4 cores in the 4+1 core structure are composed of 3 phase lines+1 neutral lines.
Specifically, the wire core is of a 3-layer structure and comprises a conductor 1 positioned in the center of the wire core, a fire-resistant layer 2 is wrapped outside the conductor 1, and an insulating layer 3 is wrapped outside the fire-resistant layer 2. Specifically, the conductor 1 is a type 2 annealed compressed copper conductor formed by twisting and compressing a plurality of strands of copper wires, the refractory layer 2 is a synthetic mica tape, and the insulating layer 3 is a crosslinked polyethylene layer.
The conductor 1 is a class 2 annealed compressed copper conductor which is formed by twisting and compressing a plurality of strands of copper wires, has excellent conductivity, mechanical strength and production efficiency, improves the efficiency and safety of power transmission, and reduces the cost of long-term operation.
The fire-resistant layer 2 is wrapped by synthetic mica tape, and has extremely high melting point (synthetic mica can reach more than 1000 ℃), can not be melted or decomposed in fire, can maintain insulating performance, and can prevent current short circuit. At high temperature, the mica tape reacts with the adhesive to form a ceramic-like crust, which isolates oxygen and flame and protects the conductor 1 from direct thermal shock.
The insulating material of the insulating layer 3 adopts crosslinked polyethylene, which can provide good insulating performance, has good elasticity and flexibility, and in the explosion-proof electrical equipment, the crosslinked polyethylene is used as the insulating layer 3, so that the risk of short circuit or overheat can be reduced due to high temperature resistance, low conductivity and stability, and the requirement of intrinsic safety is met.
Specifically, the explosion-proof filler 4 is a glass fiber filler.
In the explosion-proof cable, important components for ensuring the structural stability of the cable and improving the explosion-proof performance are filled. The core function is to prevent internal sparks or arcs from causing explosions by filling the gaps between conductors 1, while enhancing mechanical protection and environmental compatibility. And the gaps of the multi-core cable are filled with glass fiber ropes, so that the formation of a diffusion channel of combustible gas in the cable is prevented, heat generated by fault arc is absorbed, and local temperature peaks are reduced.
Preferably, the explosion-proof filler 4 can be glass fiber rope and ceramic silicon rubber (or intumescent flame retardant), so as to realize the triple functions of physical isolation, active heat absorption and carbonization sealing. Wherein the glass fibers provide mechanical support and the ceramic material expands upon fire to fill the voids, which together block gas diffusion and heat transfer.
As a preferred embodiment of the utility model, the outer sheath structure is provided with 6 layers, namely a belting 5, a waterproof layer 6, a waterproof belt 7, an inner sheath 8, an armor 9 and an outer sheath 10 from inside to outside. Specifically, the wrapping tape 5 is a layer of ceramic silicon rubber tape, and the waterproof layer 6 is a PE sheath. Specifically, the armor 9 is a two-layer galvanized steel strip.
The wrapping belt 5 is a ceramic silicon rubber belt, a layer of ceramic silicon rubber belt is adopted for wrapping during cabling, the ceramic silicon rubber belt is in flame at 500-1000 ℃, and the filler is melted and combined with a silicon rubber decomposition product to form a porous ceramic layer, so that oxygen and heat are isolated.
The waterproof layer 6 and the waterproof belt 7 are double-layer waterproof structures, and the waterproof function is realized.
The waterproof layer 6 is extruded by PE sheath material, the main function of the waterproof layer 6 is to protect the insulating layer 3 of the cable from damage, and the waterproof layer plays a role in preventing the insulating layer 3 from being affected by moisture, mechanical damage and light and chemical aggressive media. In addition, the waterproof layer 6 can also help the cable pass short-circuit current, so as to ensure that the cable can maintain good electrical performance under various use conditions.
The cable waterproof layer 6 is wrapped with a layer of waterproof tape 7, and the main function is to prevent moisture invasion and protect the internal structure of the cable from being damaged by water. Ensure the long-term stable operation of the cable in a humid, underwater or high-pressure water environment.
The inner sheath 8 is made of intrinsic safety low-smoke halogen-free polyolefin material, so that electric sparks generated by short circuit and overload inside the cable or high temperature direct contact with external explosive gases (such as methane and hydrogen) can be prevented, electric arcs can be limited from spreading inside the cable, and chain explosion is avoided. The inner sheath 8 absorbs mechanical stress, protects the inner conductor 1 and the insulating layer 3 from damage, reduces friction between the inner structure and the outer sheath, and prevents the insulating layer 3 from aging or cracking due to long-term friction.
Then, the outer part of the inner sheath 8 is wrapped by adopting a two-layer galvanized steel strip gap, which is mainly used for enhancing the mechanical strength and the protective capability of the cable, and the steel strip armoring is matched with the inner sheath 8, the explosion-proof filler 4 and the like to form a physical isolation layer so as to prevent spark or high temperature generated by short circuit and overload inside the cable from directly contacting with external explosive gas.
The outer sheath 10 is made of intrinsic safety low-smoke halogen-free polyolefin material, so that flame spread is restrained, combustion toxicity is reduced, and the internal structure of the cable is prevented from being directly damaged by external high temperature, spark or explosion impact.
Specifically, the cross-sectional shapes of the cable core and the cable are circular.
The utility model performs explosion prevention through a flame-retardant system, a sealing structure and arc suppression, and specifically comprises the following steps:
Flame-retardant system for inhibiting flame, wherein the outer sheath 10 is made of intrinsic safety low smoke halogen-free polyolefin material, and is used for inhibiting flame spreading. The insulating layer 3 uses cross-linked polyethylene (XLPE), which is resistant to high temperatures and low in conductivity, reducing the risk of short circuits. The wrapping tape 5 is a ceramic silicon rubber tape and is used for isolating oxygen and heat.
The sealing structure prevents gas from penetrating through the gap, and the armor 9 is a two-layer galvanized steel strip, so as to form a physical isolation layer and prevent internal spark from escaping. The waterproof layer 6 adopts a PE sheath to block external moisture and chemical corrosion.
Arc suppression the armour 9 isolates the internal arc from the external environment. The crosslinked polyethylene insulation reduces the risk of short circuits.
The utility model relates to an explosion-proof high-flame-retardance special cable which is suitable for inflammable and explosive places such as mines, petrochemical industry, ship code heads and the like, is a cable product specially designed for high-risk explosive environments, and is far superior to the existing explosion-proof cable in flame retardance, mechanical strength and explosion-proof capability. Its core objective is to prevent cable faults from causing explosions and to maintain safe operation of the system under extreme conditions (e.g. high temperature, arcing, flammable gas environments). The main difference with the existing explosion-proof cable is that the explosion-proof cable has better explosion-proof, flame-retardant, high-temperature-resistant, corrosion-resistant and other performances than the existing explosion-proof cable.
The explosion-proof high-flame-retardance special cable can effectively prevent explosion through special structure and material design, and plays a key role in a plurality of industries when being used as important safety protection equipment. The main characteristics are as follows:
1. explosion-proof design
The explosion-proof cable is made of special materials and structural design, in terms of material selection, the insulating layer 3, the inner sheath 8 and the outer sheath 10 are made of high-temperature-resistant and corrosion-resistant intrinsic safety materials so as to improve the durability and safety of the cable, and in structural design, the tensile strength, the pressure resistance and the sealing performance of the explosion-proof cable are emphasized, and the high-strength armor 9 and the outer sheath are adopted so as to ensure the stability of the cable in dangerous environments and prevent the explosion possibly caused by electric arcs, sparks and the like. The surrounding flammable and explosive gases are not ignited even when a short circuit or spark occurs.
2. Flame retardancy
The flame-retardant cable is made of flame-retardant materials, so that the speed of fire spreading can be slowed down when a fire disaster occurs, and the explosion-proof cable is safer and more reliable in a dangerous environment.
3. High strength structure
The tensile strength, the pressure resistance and the sealing performance are emphasized, and a high-strength armor 9 layer and an outer sheath are adopted to ensure the stability of the cable in dangerous environments.
4. Waterproof property
The cable adopts high-density waterproof materials, and the materials have natural waterproof performance, can effectively prevent moisture from penetrating into the cable, and ensure that the cable can still keep good electrical insulation performance after being soaked in water for a long time or under larger water pressure.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520725613.5U CN224052893U (en) | 2025-04-16 | 2025-04-16 | Explosion-proof high flame retardant special cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520725613.5U CN224052893U (en) | 2025-04-16 | 2025-04-16 | Explosion-proof high flame retardant special cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN224052893U true CN224052893U (en) | 2026-03-27 |
Family
ID=99208697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520725613.5U Active CN224052893U (en) | 2025-04-16 | 2025-04-16 | Explosion-proof high flame retardant special cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN224052893U (en) |
-
2025
- 2025-04-16 CN CN202520725613.5U patent/CN224052893U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103646712A (en) | Flame-retardant composite fireproof cable | |
| CN105551603A (en) | Reinforcement isolated type mineral-insulated flexible fireproof cable | |
| CN213092879U (en) | Medium-voltage fire-resistant power cable | |
| CN224052893U (en) | Explosion-proof high flame retardant special cable | |
| CN219143854U (en) | Environment-friendly medium-voltage flame-retardant fire-resistant cable | |
| CN2593321Y (en) | High fire-resistant silicon rubber control cable | |
| CN202796109U (en) | Converter cable for offshore petroleum platform | |
| CN215730919U (en) | Intrinsic safety control cable | |
| CN212587253U (en) | Fireproof low-voltage cable structure | |
| CN212750456U (en) | Copper core crosslinked polyethylene insulation fire-resistant flame-retardant cable | |
| CN113066614A (en) | Medium-voltage corrugated aluminum sleeve armored power cable | |
| CN201725628U (en) | High-performance marine special control cable | |
| CN208225542U (en) | Crosslinked polyetylene insulated corrugated aluminium sheath pvc sheath longitudinal water-blocking flame retardant cable | |
| CN221427432U (en) | Ethylene-propylene rubber insulation halogen-free low-smoke low-toxicity flame-retardant medium-voltage cable for ship | |
| CN220155201U (en) | A metal sheathed inorganic mineral insulated cable | |
| CN224096440U (en) | Fireproof and explosion-proof cable | |
| CN220821176U (en) | Medium-voltage fire-resistant cable for offshore oil platform | |
| CN223539346U (en) | A novel dynamic steady-state dual explosion-proof flexible cable | |
| CN223245323U (en) | A medium voltage fire-resistant power cable | |
| CN212084726U (en) | Fire-resistant environment-friendly power cable of 35KV and below | |
| CN113611456B (en) | Intrinsic safety computer cable and preparation method thereof | |
| CN222394608U (en) | cable | |
| CN224203874U (en) | A cable | |
| CN222106325U (en) | A flame retardant and explosion-proof cable for electric power | |
| CN213935731U (en) | Novel high-performance composite structure fire-resistant power cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |