Non-radiation field vibration reduction type armored flame-retardant marine control cable
By using a stranded structure of insulated wire core and TPU elastomeric core tube in marine control cables and covering specific sheath and armor layers on the outside, the problem of insufficient vibration, impact and moisture resistance in harsh environments is solved, and higher mechanical strength and service life are achieved.
Patent Information
- Application Number
- CN202420531798.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-19
AI Technical Summary
Existing marine cables are difficult to meet the characteristics of vibration reduction, impact resistance and moisture resistance in harsh use environments, resulting in insufficient electrical and mechanical properties and short service life.
A non-radiation field vibration-absorbing armored flame-retardant marine control cable is used to twist the cable core with three insulated wire cores and three TPU elastomeric core tubes, and the irradiated cross-linked high-density polyethylene inner and outer sheath layer and tensile-resistant copper mesh braided armor layer are coated on the outside.
It improves the vibration damping performance and tensile resistance of the cable core, enhances the mechanical strength and stability of the cable, is suitable for laying and installing in narrow spaces, and extends the service life.
Smart Images
Figure CN222672647U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of cable technology, and in particular to a non-radiation field vibration-damping armored flame-retardant ship control cable. Background Art
[0002] Marine cables include marine power cables, marine control cables and marine communication cables, which are mainly used for power, lighting and general control of various ships on rivers and seas and offshore oil platforms and other water-based structures. With the rapid development of river, sea and ocean transportation industries and marine engineering, various types of ships and offshore oil platforms will continue to increase, and the technical requirements for cables of various equipment will increase day by day. Due to the harsh operating environment conditions, marine cables need to meet requirements such as excellent electrical and mechanical properties. Medium-voltage rubber insulated cables are suitable for the wiring of ships and offshore mobile platforms, and need to have characteristics such as vibration reduction, impact resistance, and moisture resistance. General medium-voltage power cables cannot be directly used as substitutes. Due to factors such as river and sea navigation and ship floating, marine cables need to have safer and more reliable electrical characteristics and mechanical properties than ordinary medium-voltage cables to improve durability. Utility Model Content
[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present application is to provide a non-radiation field vibration-damping armored flame-retardant ship control cable, which has a round and balanced cable core structure, effectively improves the vibration reduction performance, has good resistance to slight impacts, enhances safety and reliability, has better tensile resistance, is suitable for laying and installation in narrow spaces, and is durable.
[0004] This application solves the above technical problems through the following technical solutions.
[0005] A non-radiation field vibration-damping armored flame-retardant ship control cable comprises three insulating cores and three TPU elastomer core tubes twisted together to form a cable core, the TPU elastomer core tube is sheathed with AFRP reinforcing core material, the cable core is coated with a radiation cross-linked high-density polyethylene inner sheath layer, a tensile copper mesh braided armor layer and a radiation cross-linked high-density polyethylene outer sheath layer in sequence, the tensile copper mesh braided armor layer is composed of a para-type fully aromatic copolyamide stretched fiber strand and a tinned copper wire mixed wire that are mutually reversely spirally wound and woven, the tinned copper wire has a diameter of 0.4 mm to 0.45 mm, and the diameter of the para-type fully aromatic copolyamide stretched fiber strand is not less than 75% of the diameter of the tinned copper wire, the insulating core comprises an inner conductor, a nylon resin moisture-proof dielectric layer and an EPDM rubber insulation layer, the EPDM rubber insulation layer has a thickness of 3 mm to 4 mm, and the outer diameter of the radiation cross-linked high-density polyethylene outer sheath layer is 34 mm to 78 mm.
[0006] Preferably, the inner conductor is formed by twisting a plurality of tinned copper monofilaments with a diameter of 0.1 mm to 0.3 mm and a plurality of para-type fully aromatic copolyamide stretched fiber filaments.
[0007] Preferably, the inner conductor lay length is 5 to 15 times the outer diameter of the inner conductor.
[0008] Preferably, the AFRP reinforced core material is a plurality of aramid fibers twisted together and hot-melt bonded together by thermoplastic polypropylene resin.
[0009] Preferably, the thickness of the nylon resin moisture-proof medium layer is 0.2 mm to 0.5 mm.
[0010] Preferably, the nylon resin moisture-proof dielectric layer is a semi-conductive nylon tape multi-layer overlapping wrapping structure with an overlap rate of 20% to 40%.
[0011] Preferably, the thickness of the radiation cross-linked high-density polyethylene inner sheath layer is 1.8 mm to 3.1 mm, and the thickness of the radiation cross-linked high-density polyethylene outer sheath layer is 2.1 mm to 3.5 mm.
[0012] Preferably, the braiding density of the tensile-resistant copper mesh braided armor layer is 80% to 90%.
[0013] Preferably, the outer diameter of the radiation cross-linked high-density polyethylene inner sheath layer is 28 mm to 68 mm.
[0014] Preferably, the lay length of the cable core is 10 to 15 times the outer diameter of the insulating core.
[0015] Beneficial effects of this application:
[0016] 1. The cable core is formed by twisting three insulating cores with three TPU elastomer core tubes. The cable core structure is round and balanced, with good stability and high mechanical strength. The TPU elastomer core tube has good physical and mechanical properties and high elasticity, which is beneficial to enhancing the vibration reduction performance. The TPU elastomer core tube is sheathed with AFRP reinforced core material, which takes into account both enhanced vibration reduction performance and tensile resistance, reduces the oscillation load borne by each insulating core, helps to withstand lateral pressure during bending, prevents wire breakage, ensures stable electrical characteristics, and has better durability.
[0017] 2. Additional mechanical protection is provided by adding a tensile-resistant copper mesh braided armor layer between the inner and outer sheaths of the irradiated cross-linked high-density polyethylene, which has a certain resistance to slight impacts. It is formed by braiding a para-type fully aromatic copolyamide stretched fiber strand and a tinned copper wire mixed wire. The para-type fully aromatic copolyamide stretched fiber strand helps to improve the flexibility and tensile resistance of the armor layer, reduce the local stress concentration of the armor layer, and reduce the torque during bending. It is suitable for laying and installation in narrow spaces, protects the sheath layer, increases safety and reliability, and has better durability.
[0018] 3. The inner conductor is formed by twisting the para-type fully aromatic copolyamide stretched fiber filament and the tinned copper monofilament. The para-type fully aromatic copolyamide stretched fiber filament improves the tensile strength of the inner conductor, enhances the bending resistance, is not prone to wire breakage, and is durable.
[0019] 4. By adding a nylon resin moisture-proof dielectric layer between the inner conductor and the insulation layer, it is effectively blocked from the diffusion of water vapor into the insulation layer, ensuring stable electrical properties and improving the safety and reliability of the cable. The EPDM rubber insulation layer has excellent heat resistance and aging resistance, and has good insulation properties and voltage resistance properties, which helps to improve the thermal stability of the cable, extend its service life, and provide better durability. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.
[0021] Description of reference numerals:
[0022] 1-insulated wire core, 2-TPU elastomer core tube, 3-AFRP reinforced core material, 4-irradiation cross-linked high-density polyethylene inner sheath layer, 5-tensile-resistant copper mesh braided armor layer, 6-irradiation cross-linked high-density polyethylene outer sheath layer, 7-inner conductor, 8-nylon resin moisture-proof dielectric layer, 9-EPDM rubber insulation layer. DETAILED DESCRIPTION
[0023] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0024] See also Figure 1The non-radiation field vibration-damping armored flame-retardant ship control cable of the embodiment of the present application comprises three insulating cores 1 and three TPU elastomer core tubes 2 twisted together to form a cable core, and the twist pitch of the cable core is 10 to 15 times the outer diameter of the insulating core 1. The TPU elastomer core tube 2 is provided with an AFRP reinforced core material 3, and further, the AFRP reinforced core material 3 is a plurality of aramid fibers twisted and hot-melt bonded into one by thermoplastic polypropylene resin. The insulating core 1 comprises an inner conductor 7, a nylon resin moisture-proof dielectric layer 8 and an EPDM rubber insulation layer 9. Specifically, the inner conductor 7 is composed of a plurality of tinned copper monofilaments with a diameter of 0.1 mm to 0.3 mm and a plurality of para-type fully aromatic copolyamide stretched fiber filaments twisted together, and further, the twist pitch of the inner conductor 7 is 5 to 15 times the outer diameter of the inner conductor 7. The thickness of the nylon resin moisture-proof dielectric layer 8 is 0.2 mm to 0.5 mm. In one embodiment, the nylon resin moisture-proof dielectric layer 8 is a semi-conductive nylon tape multi-layer overlapping wrapping structure with an overlap rate of 20% to 40%. The EPDM rubber insulation layer 9 has a thickness of 3 mm to 4 mm.
[0025] The cable core is coated with an irradiated cross-linked high-density polyethylene inner sheath layer 4, a tensile copper mesh braided armor layer 5 and an irradiated cross-linked high-density polyethylene outer sheath layer 6 in sequence. The tensile copper mesh braided armor layer 5 is composed of a para-type fully aromatic copolyamide stretched fiber strand and a tinned copper wire mixed wire, which are mutually reversely spirally wound and woven. The diameter of the tinned copper wire is 0.4mm to 0.45mm, and the diameter of the para-type fully aromatic copolyamide stretched fiber strand is not less than 75% of the diameter of the tinned copper wire. The braiding density is 80% to 90%. The thickness of the irradiated cross-linked high-density polyethylene inner sheath layer 4 is 1.8mm to 3.1mm, and the thickness of the irradiated cross-linked high-density polyethylene outer sheath layer 6 is 2.1mm to 3.5mm. The outer diameter of the irradiated cross-linked high-density polyethylene inner sheath layer 4 is 28mm to 68mm. The outer diameter of the irradiated cross-linked high-density polyethylene outer sheath layer 6 is 34mm to 78mm.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. Non-radiation field vibration reduction armored flame retardant marine control cable, characterized by: The invention comprises three insulating wire cores (1) and three TPU elastomer core tubes (2) twisted together to form a cable core, wherein the TPU elastomer core tube (2) is provided with an AFRP reinforcing core material (3) in the inner sleeve, and the outer sleeve of the cable core is sequentially coated with an irradiation cross-linked high-density polyethylene inner sheath layer (4), a tensile-resistant copper mesh braided armor layer (5) and an irradiation cross-linked high-density polyethylene outer sheath layer (6), wherein the tensile-resistant copper mesh braided armor layer (5) is a para-type fully aromatic copolyamide stretched fiber strand and a tinned copper wire mixed wire. The invention is composed of reverse spiral winding and braiding, the diameter of the tinned copper wire is 0.4 mm to 0.45 mm, the diameter of the para-type fully aromatic copolyamide stretched fiber strand is not less than 75% of the diameter of the tinned copper wire, the insulating core (1) comprises an inner conductor (7), a nylon resin moisture-proof dielectric layer (8) and an EPDM rubber insulation layer (9), the thickness of the EPDM rubber insulation layer (9) is 3 mm to 4 mm, and the outer diameter of the radiation cross-linked high-density polyethylene outer sheath layer (6) is 34 mm to 78 mm.
2. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 1 is characterized by: The inner conductor (7) is formed by twisting a plurality of tinned copper monofilaments with a diameter of 0.1 mm to 0.3 mm and a plurality of para-type fully aromatic copolyamide stretched fiber filaments.
3. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 2 is characterized by: The lay length of the inner conductor (7) is 5 to 15 times the outer diameter of the inner conductor (7).
4. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 1 is characterized by: The AFRP reinforced core material (3) is a plurality of aramid fibers twisted together and bonded together by hot-melt bonding with thermoplastic polypropylene resin.
5. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 1 is characterized by: The thickness of the nylon resin moisture-proof medium layer (8) is 0.2 mm to 0.5 mm.
6. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 1 is characterized by: The nylon resin moisture-proof medium layer (8) is a semi-conductive nylon tape multi-layer overlapping wrapping structure with an overlap rate of 20% to 40%.
7. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 1 is characterized by: The thickness of the radiation cross-linked high-density polyethylene inner sheath layer (4) is 1.8 mm to 3.1 mm, and the thickness of the radiation cross-linked high-density polyethylene outer sheath layer (6) is 2.1 mm to 3.5 mm.
8. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 1 is characterized by: The braiding density of the tensile-resistant copper mesh braided armor layer (5) is 80% to 90%.
9. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 1 is characterized by: The outer diameter of the radiation cross-linked high-density polyethylene inner sheath layer (4) is 28 mm to 68 mm.
10. The non-radiation field vibration-damping armored flame-retardant ship control cable according to claim 1 is characterized by: The lay length of the cable core is 10 to 15 times the outer diameter of the insulating core (1).