Ceramic flame-retardant PPO composite insulation halogen-free low-smoke cable

Abstract

The utility model relates to the technical field of cables, and discloses a ceramic flame-retardant PPO composite insulation halogen-free low-smoke cable, which comprises a cable conductor, a monomer protection sleeve is attached to the outer surface of the cable conductor, an inner protection sleeve is wrapped on the outer surface of the monomer protection sleeve, a conductor storage groove is formed in the inner protection sleeve in a penetrating manner, and the conductor storage groove is communicated with the inner protection sleeve. An inner insulating layer is attached to the outer surface of the inner protective sleeve, and an outer insulating layer is attached to the other face, away from the cable conductor, of the inner insulating layer. According to the ceramic flame-retardant PPO composite insulation halogen-free low-smoke cable, the modified ceramic flame-retardant PPO insulation structure is extruded outside the conventional halogen-free low-smoke flame-retardant polyolefin insulation layer, the modified ceramic flame-retardant PPO insulation layer has outstanding electrical insulativity and excellent water resistance, has wear resistance and excellent ceramic forming performance after combustion, and through the design of the inner protective sleeve, the flame-retardant performance of the cable is greatly improved. The cross section of the inner protective sleeve is honeycomb-shaped, so that the weight is reduced while the strength is ensured, and the flexibility of the inner protective sleeve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely is a kind of ceramicized flame-retardant PPO composite insulation halogen-free low smoke cable. BACKGROUND

[0002] With the continuous improvement of science and technology, electronic and electrical industry is also derived from the high-frequency use of cable in rapid development, when using in damp environment such as basement, garage, because of the moisture absorption of insulating material, the insulation resistance will be reduced, when the insulation resistance continues to reduce, it may cause wire and cable insulation breakdown, line short circuit and other safety accidents, for example, polyvinyl chloride (PVC) cable, it is a kind of common halogen-containing cable material, smoke produced when burning has strong light shielding property, which will cause difficulty in breathing and panic, and from the environmental protection point of view, halogen-containing flame retardant will produce some harmful substances to the environment after burning, such as dioxin, these substances are difficult to degrade in the environment, will exist for a long time and cause harm to the ecosystem, so a kind of ceramicized flame-retardant PPO composite insulation halogen-free low smoke cable is proposed.

[0003] Chinese utility model patent publication number: CN 217061518 U, discloses: a kind of high-efficiency high-temperature-resistant insulated electric wire cable, the high-efficiency high-temperature-resistant insulated electric wire cable, by protective shell to protect cable and reduce the wear and tear of outside and have good cryogenic property, improve the service life of cable, by the heat dissipation structure formed between high-temperature-resistant layer and protective shell, the heat generated by cable is discharged from the heat dissipation slot after passing through the heat dissipation channel from the heat dissipation hole, can realize rapid heat dissipation, reduce the temperature of cable itself, but the high-efficiency high-temperature-resistant insulated electric wire cable, although it can play the role of rapid heat dissipation, poor insulating flame retardancy, when fire occurs, it is not convenient to realize self-extinguishing, and not convenient to porcelain, easy to cause internal cable damage, affect normal use. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a kind of ceramicized flame-retardant PPO composite insulation halogen-free low smoke cable, which can effectively solve the problem that the prior art can play the role of rapid heat dissipation, poor insulating flame retardancy, when fire occurs, it is not convenient to realize self-extinguishing, and not convenient to porcelain, easy to cause internal cable damage, affect normal use.

[0005] The technical scheme adopted by the utility model is: a kind of ceramicized flame-retardant PPO composite insulation halogen-free low smoke cable, including cable conductor, the cable conductor outer surface is attached with single body protective sleeve, the single body protective sleeve outer surface is wrapped with inner protective sleeve, the inner protective sleeve is internally penetrated and is set with conductor storage groove, the inner protective sleeve outer surface is attached with inner insulation layer, the other side of the inner insulation layer away from cable conductor is attached with outer insulation layer.

[0006] Preferably, the inner insulation layer is made of halogen-free low-smoke flame-retardant polyolefin insulation material, and the length of the inner insulation layer is the same as that of the outer insulation layer.

[0007] By the above technical solution, the inner insulation layer made of halogen-free low-smoke flame-retardant polyolefin insulation material can effectively avoid the problem of toxic and harmful gas and a large amount of smoke generated by the combustion of traditional halogen-containing materials, ensuring the safety of the use environment. Moreover, the design of the same length of the inner insulation layer and the outer insulation layer ensures the continuity of the overall insulation of the cable, prevents weak links caused by inconsistent lengths, improves the overall insulation performance and safety of the cable, and enables the cable to work stably in various complex environments, effectively preventing the occurrence of electric leakage.

[0008] Preferably, the outer insulation layer is made of modified ceramic flame-retardant PPO insulation material, and the outer insulation layer wraps the inner insulation layer and is located on the outer surface thereof.

[0009] By the above technical solution, the outer insulation layer made of modified ceramic flame-retardant PPO insulation material can form a ceramic protective layer when encountering high temperature or flame, enhancing the flame-retardant effect. Moreover, it has outstanding electrical insulation and water resistance, and strong wear resistance and electrical performance. When the cable encounters a fire, the ceramic protective layer can effectively prevent the spread of the flame, reduce the damage of the fire to the cable, and also provide safer protection for the surrounding environment and personnel. In addition, its good insulation performance cooperates with the inner insulation layer, further improving the insulation level of the cable and ensuring the stability of power transmission.

[0010] Preferably, the conductor storage groove has the same shape and diameter as the inner protective sleeve, and the conductor storage groove corresponds to the cable conductor one by one.

[0011] By the above technical solution, through the design of the conductor storage groove, the cable conductor can be placed in the corresponding conductor storage groove, ensuring that each conductor can be well positioned and protected, improving the structural stability of the cable, and reducing the risk of damage to the insulation layer caused by the movement and friction of the conductor, thereby prolonging the service life of the cable and ensuring the stability of the electrical performance of the cable during use.

[0012] Preferably, the single protective sleeve is made of ethylene-propylene rubber protective sleeve, and the single protective sleeve corresponds to the single cable conductor one by one.

[0013] By the above technical solution, through the design of the single protective sleeve, the single cable conductor can be separated, thereby protecting the single cable conductor, enabling the cable to maintain good performance in different environments, and reducing maintenance costs and failure rates.

[0014] Preferably, the cross section of the inner protective sleeve is in a "honeycomb" shape, and the single protective sleeve is located on the side of the inner protective sleeve close to the cable conductor.

[0015] Through the technical scheme, the inner protective sleeve is designed, the cross section of the inner protective sleeve is in a honeycomb shape, the weight can be reduced while the strength is ensured, and the flexibility of the inner protective sleeve is increased, when the cable is extruded or bent by external force, the honeycomb structure can effectively disperse stress, and the situation that local stress is too large is reduced.

[0016] Preferably, the inner insulation layer has a thickness of 0.5-1.5mm, and the inner insulation layer and the outer insulation layer have the same thickness.

[0017] Through the technical scheme, the thicknesses of the inner insulation layer and the outer insulation layer are designed, the overall size and flexibility of the cable are considered while the insulation performance is ensured, the insulation requirement in a low-voltage environment is met, the electric leakage phenomenon is prevented, the cable is not too bulky, and the cable is easier to bend and lay during installation and use, and the installation difficulty problem caused by the too thick insulation layer is reduced.

[0018] Compared with the prior art, the utility model provides a kind of ceramic flame-retardant PPO composite insulation halogen-free low smoke cable, with the following beneficial effects:

[0019] 1、the ceramic flame-retardant PPO composite insulation halogen-free low smoke cable, a layer of modified ceramic flame-retardant PPO insulation structure is extruded and packed outside conventional halogen-free low smoke flame-retardant polyolefin insulation, and the modified ceramic flame-retardant PPO insulation has excellent electrical insulation and water resistance, good wear resistance and electrical performance, and excellent porcelain performance after burning;

[0020] 2、the ceramic flame-retardant PPO composite insulation halogen-free low smoke cable has excellent electrical insulation, water resistance, wear resistance and heat resistance, good flame retardance, small dielectric constant and loss, and is non-toxic, halogen-free, small in density and high in mechanical strength, has multiple excellent performances, and meets the requirements of halogen-free low smoke, high insulation, high strength, high waterproofness, high fire resistance and wear resistance;

[0021] 3、the ceramic flame-retardant PPO composite insulation halogen-free low smoke cable is designed with an inner protective sleeve, the cross section of the inner protective sleeve is in a honeycomb shape, the weight can be reduced while the strength is ensured, and the flexibility of the inner protective sleeve is increased, when the cable is extruded or bent by external force, the honeycomb structure can effectively disperse stress, and the situation that local stress is too large is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the three-dimensional structure schematic of the utility model Figure 1 ;

[0023] Figure 2 is the three-dimensional structure schematic of the utility model Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the split structure of the utility model Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the split structure of the utility model Figure 2 ;

[0026] Figure 5 This is a schematic diagram of the installation structure of the conductor storage groove of the inner anti-slip sleeve of the utility model.

[0027] Among them: 1. Cable conductor; 2. Single protective cover; 3. Inner protective cover; 4. Conductor storage slot; 5. Inner insulation layer; 6. Outer insulation layer. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1: Figures 1-5 As shown, the utility model provides a ceramic flame-retardant PPO composite insulated halogen-free low-smoke cable, including a cable conductor 1, the outer surface of the cable conductor 1 is adhered to a single protective sleeve 2, the outer surface of the single protective sleeve 2 is wrapped with an inner protective sleeve 3, the inner protective sleeve 3 is provided with a conductor storage groove 4, the outer surface of the inner protective sleeve 3 is adhered to an inner insulating layer 5, and the other side of the inner insulating layer 5 away from the cable conductor 1 is adhered to an outer insulating layer 6.

[0030] Specifically, the inner insulating layer 5 is made of halogen-free, low-smoke, flame-retardant polyolefin insulation material, and the length of the inner insulating layer 5 is the same as that of the outer insulating layer 6. The advantage is that the inner insulating layer 5 made of halogen-free, low-smoke, flame-retardant polyolefin insulation material can effectively avoid the problem of traditional halogen-containing materials burning to produce toxic and harmful gases and a large amount of smoke, thereby ensuring a safe use environment. In addition, the design of having the same length as the outer insulating layer 6 ensures the continuity of the overall insulation of the cable, prevents weak links caused by inconsistent lengths, improves the overall insulation performance and safety of the cable, enables the cable to work stably in various complex environments, and effectively prevents the occurrence of leakage.

[0031] Specifically, the outer insulation layer 6 is made of modified ceramic flame-retardant PPO insulation material, the outer insulation layer 6 wraps the inner insulation layer 5 and is located on the outer surface thereof, and the advantage is that the outer insulation layer 6 made of modified ceramic flame-retardant PPO insulation material can form a ceramic protective layer when encountering high temperature or flame, thereby enhancing the flame-retardant effect, and the ceramic protective layer has excellent electrical insulation and water resistance, and strong wear resistance and electrical performance, and when the cable encounters fire, the ceramic protective layer can effectively prevent the spread of fire and reduce the damage of fire to the cable, thereby providing safer protection for the surrounding environment and personnel. In addition, the good insulation performance of the outer insulation layer 6 cooperates with the inner insulation layer 5, thereby further improving the insulation level of the cable and ensuring the stability of power transmission.

[0032] Specifically, the conductor storage groove 4 has the same shape and diameter as the inner protective sleeve 3, and the conductor storage groove 4 corresponds to the cable conductor 1 one-to-one, and the advantage is that the cable conductor 1 can be placed in the corresponding conductor storage groove 4 through the design of the conductor storage groove 4, thereby ensuring that each conductor can be well positioned and protected, improving the structural stability of the cable, and reducing the risk of insulation layer damage caused by conductor movement and friction, thereby prolonging the service life of the cable and ensuring the electrical performance stability of the cable during use.

[0033] Embodiment two: as shown in the following table, which is an improvement on the previous embodiment. Figures 2-5

[0034] Specifically, the single protective sleeve 2 is made of ethylene-propylene rubber protective sleeve, and the single protective sleeve 2 corresponds to the single cable conductor 1 one-to-one, and the advantage is that the single protective sleeve 2 can separate the single cable conductor 1, thereby protecting the single cable conductor 1 and enabling the cable to maintain good performance in different environments, thereby reducing maintenance costs and failure rates.

[0035] Specifically, the inner protective sleeve 3 has a "honeycomb" cross-section, and the single protective sleeve 2 is located on the side of the inner protective sleeve 3 close to the cable conductor 1, and the advantage is that the inner protective sleeve 3 has a "honeycomb" cross-section, which can reduce the weight while ensuring the strength, and increase the flexibility of the inner protective sleeve 3, so that the honeycomb structure can effectively disperse stress and reduce the situation of excessive local stress when the cable is subjected to external pressure or bending.

[0036] Specifically, the thickness of the inner insulation layer 5 is 0.5-1.5mm, and the thickness of the inner insulation layer 5 and the outer insulation layer 6 is the same, and the advantage is that the thickness of the inner insulation layer 5 and the outer insulation layer 6 can ensure the insulation performance while taking into account the overall size and flexibility of the cable, so that the cable can meet the insulation requirements in low-voltage environments and prevent electrical leakage, and at the same time, the cable will not be too bulky, and the cable can be easily bent and laid during installation and use, thereby reducing the problem of installation difficulty caused by the thickness of the insulation layer. ​

[0037] Working principle: in use, the inner insulation layer 5 made of halogen-free low-smoke flame-retardant polyolefin insulation material can effectively avoid the problem of toxic and harmful gas and a large amount of smoke generated by the combustion of traditional halogen-containing materials, ensuring the safety of the use environment, and the design of the same length of the outer insulation layer 6 ensures the continuity of the overall insulation of the cable, prevents weak links caused by inconsistent length, improves the overall insulation performance and safety of the cable, and makes the cable work stably in various complex environments, effectively prevents the occurrence of electric leakage, and the outer insulation layer 6 made of modified ceramic flame-retardant PPO insulation material can form a ceramic protective layer when encountering high temperature or flame, enhancing the flame-retardant effect, and having outstanding electrical insulation and water resistance, and strong wear resistance and electrical performance, When the cable encounters a fire, the ceramic protective layer can effectively prevent the spread of the flame, reduce the damage of the fire to the cable, and also provide safer protection for the surrounding environment and personnel. In addition, its good insulation performance cooperates with the inner insulation layer 5 to further improve the insulation level of the cable and ensure the stability of power transmission, through the design of the conductor storage groove 4, the cable conductor 1 can be placed in the corresponding conductor storage groove 4, ensuring that each conductor can be well positioned and protected, improving the structural stability of the cable, and reducing the risk of insulation layer damage caused by conductor movement and friction, thereby prolonging the service life of the cable and ensuring the stability of the electrical performance of the cable during use. Through the design of the single protection sleeve 2, the single cable conductor 1 can be separated, thereby protecting the single cable conductor 1, so that the cable can maintain good performance in different environments, reduce maintenance costs and failure rate, through the design of the inner protective sleeve 3, the cross section is "honeycomb", which can reduce the weight while ensuring the strength, and increase the flexibility of the inner protective sleeve 3, when the cable is extruded or bent by external force, the honeycomb structure can effectively disperse stress and reduce the situation of excessive local stress, through the design of the thickness of the inner insulation layer 5 and the outer insulation layer 6, the overall size and flexibility of the cable are considered while ensuring the insulation performance, which can meet the insulation requirements in low-voltage environment and prevent electric leakage, and the cable is not too bulky, and during installation and use, the cable can be bent and laid more easily, reducing the problem of installation difficulty caused by thick insulation layer.

[0038] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A ceramic fire-retardant PPO composite insulating halogen-free low-smoke cable comprising a cable conductor (1), characterized in that: The cable conductor (1) is attached with a single protective sleeve (2) on the outer surface, the single protective sleeve (2) is wrapped with an inner protective sleeve (3), the inner protective sleeve (3) is provided with a conductor storage groove (4) inside, the inner protective sleeve (3) is attached with an inner insulation layer (5) on the outer surface, the other side of the inner insulation layer (5) away from the cable conductor (1) is attached with an outer insulation layer (6).

2. A ceramic fire retardant PPO composite insulating halogen-free low smoke cable as claimed in claim 1, wherein: The inner insulation layer (5) is made of halogen-free low-smoke flame-retardant polyolefin insulation material, and the length of the inner insulation layer (5) is the same as that of the outer insulation layer (6).

3. The ceramic flame-retardant PPO composite insulated halogen-free low-smoke cable according to claim 1, characterized in that: The outer insulation layer (6) is made of modified ceramic flame-retardant PPO insulation material, and the outer insulation layer (6) wraps the inner insulation layer (5) and is located on the outer surface thereof.

4. The ceramic flame-retardant PPO composite insulated halogen-free low-smoke cable according to claim 1, characterized in that: The conductor storage groove (4) has the same shape and diameter as the inner protective sleeve (3), and the conductor storage groove (4) corresponds to the cable conductor (1) one by one.

5. The ceramic flame-retardant PPO composite insulated halogen-free low-smoke cable according to claim 1, characterized in that: The single protective sleeve (2) is made of ethylene-propylene rubber protective sleeve, and the single protective sleeve (2) corresponds to a single cable conductor (1).

6. The ceramic flame-retardant PPO composite insulated halogen-free low-smoke cable according to claim 1, characterized in that: The cross section of the inner protective sleeve (3) is in the shape of "honeycomb", and the single protective sleeve (2) is located on the side of the inner protective sleeve (3) close to the cable conductor (1).

7. The ceramic flame-retardant PPO composite insulated halogen-free low-smoke cable according to claim 1, characterized in that: The thickness of the inner insulation layer (5) is 0.5-1.5mm, and the thickness of the inner insulation layer (5) is the same as that of the outer insulation layer (6).

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