CN216980153U - Flat watertight cable - Google Patents

Flat watertight cable Download PDF

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Publication number
CN216980153U
CN216980153U CN202220747080.7U CN202220747080U CN216980153U CN 216980153 U CN216980153 U CN 216980153U CN 202220747080 U CN202220747080 U CN 202220747080U CN 216980153 U CN216980153 U CN 216980153U
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layer
shielding
water
unit
radio frequency
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王敬有
黄延江
孙汉明
邢立江
蔡延玮
李媛
孙英豪
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Shandong Hualing Gable Co ltd
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Shandong Hualing Gable Co ltd
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Abstract

The utility model discloses a flat watertight cable, comprising: the cable comprises a cable outer sheath extruded into a flat shape, and a radio frequency unit, a shielding signal unit, a power line and bearing lines which are arranged in the cable outer sheath, wherein the bearing lines are positioned at two ends of the cable outer sheath, and the radio frequency unit, the shielding signal unit and the power line are horizontally arranged between the two bearing lines. The radio frequency unit, the shielding signal unit, the power line and the bearing lines are horizontally sequenced, the cable is in a flat shape, the two bearing lines are arranged at two ends of the flat cable, and the radio frequency unit, the shielding signal unit, the power line and the bearing lines are tightly attached through extrusion, so that dragging and hoisting of underwater small equipment can be realized, and the deep water detection requirements can be met.

Description

Flat watertight cable
Technical Field
The utility model relates to the technical field of watertight cables, in particular to a flat watertight cable.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The watertight cable, namely the waterproof cable, can bear water to permeate along the cable when in a certain depth, is an indispensable matched product for a ship, a water surveying platform and deepwater salvaging, and is mainly applied to electrical information and video transmission of underwater device equipment and a detection system. The reliability and stability of the cable are directly related to the stable operation of ship facilities and platform equipment and the transmission of underwater detection data information, and the analysis and the judgment of the data are influenced.
The cable should have longitudinal water-blocking performance, and in addition, the cable needs to be connected with equipment or other underwater facilities in the using process, and the cable itself should have good bending performance and the performance of bearing load and hoisting. However, the existing composite watertight cable products have rare categories, single performance, are mostly small-section communication cables, are designed in a circular structure, and do not have good bending performance and good mechanical tensile property.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a flat watertight cable, which is characterized in that a radio frequency unit, a shielding signal unit, a power line and carrying lines are horizontally sequenced, the cable is in a flat shape, two carrying lines are arranged at two ends of the flat cable, and the radio frequency unit, the shielding signal unit, the power line and the carrying lines are tightly attached through extrusion, so that dragging and hanging of underwater small-sized equipment can be realized, and the deep water detection requirement can be met.
In order to achieve the purpose, the utility model adopts the following technical scheme:
in a first aspect, the present invention provides a flat watertight cable comprising: the cable comprises a cable outer sheath extruded into a flat shape, and a radio frequency unit, a shielding signal unit, a power line and a bearing line which are arranged in the cable outer sheath, wherein the bearing line is positioned at two ends of the cable outer sheath, and the radio frequency unit, the shielding signal unit and the power line are horizontally arranged between the two bearing lines.
As an alternative embodiment, the radio frequency unit includes a radio frequency unit conductor layer, a radio frequency unit insulating layer, a radio frequency unit shielding layer, and a radio frequency unit protective layer, which are sequentially disposed from inside to outside.
As an alternative embodiment, the radio frequency unit conductor layer is formed by twisting tinned copper conductors, a water-blocking aramid fiber wire is added in the center of the twisted tinned copper conductors, and a water-blocking material is filled in the twisting process of the tinned copper conductors.
In an alternative embodiment, the radio frequency unit insulating layer is made of low-density polyethylene insulating material.
In an alternative embodiment, the radio frequency unit insulating layer has an insulation eccentricity of no greater than 10%.
As an alternative embodiment, the radio frequency unit shielding layer is woven by using tinned copper wires.
As an alternative embodiment, the weaving density of the radio frequency unit shielding layer is not less than 90%.
As an alternative embodiment, a piece of water-blocking aramid fiber wire is placed at a radial position in the weaving process of the shielding layer of the radio frequency unit, and meanwhile, water-blocking materials are filled.
As an alternative embodiment, the radio frequency unit protective layer is made of a pressure type extruded cross-linked polyolefin sheathing material or a pressure type extruded thermoplastic polyurethane sheathing material.
As an alternative embodiment, the shielding signal unit includes a shielding signal unit conductor layer, a shielding signal unit insulating layer, a shielding signal unit water-blocking layer, a shielding signal unit shielding layer and a shielding signal unit protective layer, which are sequentially arranged from inside to outside.
As an alternative embodiment, the conductor layer of the shielding signal unit is formed by twisting tin-plated copper conductors, and a water-blocking material is filled in the twisting process.
As an alternative embodiment, the insulation layer of the shielding signal unit is formed by extruding in a double-layer co-extrusion mode, wherein the double-layer co-extrusion mode is that the inner layer is made of irradiation cross-linked polyethylene insulation material, the outer layer is made of irradiation cross-linked polyolefin insulation material, and the two materials are extruded simultaneously to form the insulation wire core.
In an alternative embodiment, the insulated wire cores are twisted into a cable in the right direction, and are filled with a water-blocking material, and simultaneously, a water-blocking layer of the shielding signal unit is wrapped around the cable.
In an alternative embodiment, the covering rate of the water-blocking layer of the shielding signal unit is 15% -20%.
In an alternative embodiment, the shielding layer of the signal shielding unit is braided by using a tinned copper wire.
As an alternative embodiment, the weaving density of the shielding layer of the shielding signal unit is not less than 90%.
As an alternative embodiment, a piece of water-blocking aramid fiber wire is placed at a radial position in the weaving process of the shielding layer of the signal shielding unit, and meanwhile, a water-blocking material is filled.
As an alternative embodiment, the protective layer of the shielding signal unit is made of a pressure type extrusion cross-linked polyolefin sheathing material or a pressure type extrusion thermoplastic polyurethane sheathing material.
As an alternative embodiment, the power line includes a power line conductor layer, a power line insulating layer, a power line waterproof layer, and a power line protective layer, which are sequentially disposed from inside to outside.
As an alternative embodiment, the conductor layer of the power line is formed by twisting tinned copper conductors, and a water-blocking material is filled in the twisting process.
As an alternative embodiment, the power line insulating layer is formed by extruding in a double-layer co-extrusion mode, wherein the double-layer co-extrusion mode is that an inner layer is made of irradiation cross-linked polyethylene insulating material, an outer layer is made of irradiation cross-linked polyolefin insulating material, and the two materials are extruded simultaneously to form the insulating wire core.
In an alternative embodiment, the insulated wire cores are twisted into a cable in the right direction and filled with a water-blocking material, and simultaneously wrapped with a water-blocking layer of the power line.
In an alternative embodiment, the covering rate of the power line waterproof layer is 15% to 20%.
As an alternative embodiment, the power line protective layer is made of a pressure type extruded cross-linked polyolefin sheathing material or a pressure type extruded thermoplastic polyurethane sheathing material.
As an alternative embodiment, the carrier wire includes a carrier wire conductor layer and a carrier wire protection layer arranged in sequence from inside to outside.
As an alternative embodiment, the carrier conductor layer is formed by twisting galvanized steel wires, a water-blocking aramid fiber wire is added at the twisting center, and a water-blocking material is filled in the twisting process.
As an alternative embodiment, the bearing line protective layer is made of a pressure type extrusion cross-linked polyolefin sheathing compound or a pressure type extrusion thermoplastic polyurethane sheathing compound.
As an alternative embodiment, the cable outer sheath is made of a cross-linked polyolefin sheath material or a polyether type thermoplastic polyurethane sheath material.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a flat watertight cable, wherein a conductor layer of a radio frequency unit of the flat watertight cable is formed by stranding tinned copper conductors, the tinned copper conductors effectively prevent a conducting wire from being oxidized, the electrical transmission life of the cable is prolonged, and meanwhile, a water-blocking aramid fiber wire is added in the center of the tinned copper conductors, so that the mechanical tensile strength of the cable is improved.
The utility model provides a flat watertight cable, wherein a conductor layer for shielding a signal unit and a power line is formed by twisting tinned copper conductors, and sealant is continuously filled in the conductor twisting process to realize the longitudinal water resistance of the conductor; the tin-plated copper conductor can effectively improve the oxidation resistance of the conductor and prolong the service life of the cable.
The utility model provides a flat watertight cable, which is characterized in that a signal shielding unit insulating layer and a power line insulating layer are formed by extruding in a double-layer co-extrusion mode, and meanwhile, an irradiation cross-linked polyethylene insulating material on an inner layer and an irradiation cross-linked polyolefin insulating material on an outer layer are extruded, so that an insulating wire core has fire resistance while the electrical performance is ensured.
The utility model provides a flat watertight cable, wherein a cable core gap between a shielding signal unit and a power line is filled with sealant and wrapped with a water blocking layer, so that a water blocking effect is achieved when the cable meets water, and the water blocking layer is tightly attached to the surface of the cable core, so that the longitudinal water blocking performance of the cable is achieved.
The utility model provides a flat watertight cable, wherein a radio frequency unit and a shielding layer of a signal shielding unit are formed by weaving tinned copper wires, so that the external interference resistance is improved, the stability of signal transmission is ensured, meanwhile, the cable has flexibility by weaving the tinned copper wires, water-blocking aramid fibers are added on the shielding layer, and the mechanical tensile strength of the cable is improved.
The utility model provides a flat watertight cable, wherein a bearing wire of the flat watertight cable adopts a composite stranding mode of galvanized steel wires and water-blocking aramid fibers with certain tensile strength, and sealing water-blocking glue is continuously filled in the stranding process, so that the bearing wire has good longitudinal water-blocking performance while having the tensile strength.
The utility model provides a flat watertight cable, which is characterized in that a radio frequency unit, a signal shielding unit, a power line and carrying lines are horizontally sequenced, the cable is in a flat shape, two carrying lines are arranged at two ends of the flat cable, and the radio frequency unit, the signal shielding unit, the power line and the carrying lines are tightly attached through extrusion and have a certain bearing effect, so that dragging and hoisting of underwater small equipment can be realized, and the deep water detection requirement can be met. When the cable is put into water for use, the stress is balanced, and the safety and the reliability of the underwater use of the cable are improved.
Advantages of additional aspects of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
Fig. 1 is a schematic view of a flat watertight cable according to embodiment 1 of the present invention;
fig. 2 is a schematic view of a water-blocking aramid fiber filament of a radio frequency unit shielding layer provided in embodiment 1 of the present invention;
fig. 3 is a schematic view of a water-blocking aramid fiber yarn of a shielding layer of a signal shielding unit provided in embodiment 1 of the present invention;
the device comprises a carrier wire 1, a power line protective layer 2, a power line protective layer 3, a power line waterproof layer 4, a power line waterproof filler 5, a shielding signal unit protective layer 6, a shielding signal unit shielding layer 7, a shielding signal unit waterproof layer 8, a shielding signal unit conductor layer 9, a shielding signal unit insulating layer 10, a radio frequency unit protective layer 11, a radio frequency unit insulating layer 12, a radio frequency unit conductor layer 13, a radio frequency unit shielding layer 14 and a cable outer sheath, wherein the carrier wire is arranged on the carrier wire; 15. and (3) water-blocking aramid fibers.
Detailed Description
The utility model is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be understood that the terms "comprises" and "comprising", and any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiments and features of the embodiments of the utility model may be combined with each other without conflict.
Example 1
As shown in fig. 1, the present embodiment proposes a flat watertight cable, including: the cable comprises a cable outer sheath extruded into a flat shape, and a radio frequency unit, a shielding signal unit, a power line and a bearing line which are arranged in the cable outer sheath, wherein the bearing line is positioned at two ends of the cable outer sheath, and the radio frequency unit, the shielding signal unit and the power line are horizontally arranged between the two bearing lines.
In this embodiment, the rf unit includes an rf unit conductor layer 12, an rf unit insulating layer 11, an rf unit shielding layer 13 and an rf unit protection layer 10; the radio frequency unit conductor layer 12, the radio frequency unit insulating layer 11, the radio frequency unit shielding layer 13 and the radio frequency unit protective layer 10 are sequentially arranged from inside to outside;
specifically, the method comprises the following steps:
the radio frequency unit conductor layer 12 is formed by twisting a type 2 tinned copper conductor, and a water-blocking aramid fiber wire is added in the center of the twisted tinned copper conductor;
the embodiment adopts the tin-plated copper conductor to effectively prevent the oxidation of the lead, has good corrosivity and prolongs the electrical transmission life of the cable; meanwhile, a water-blocking aramid fiber wire is added in the center of the stranded conductor, so that the mechanical tensile strength of the radio frequency unit cable is improved.
As an alternative embodiment, dense water-blocking glue is continuously filled in the twisting process of the tin-plated copper conductor, so that the water blocking and water proofing of the conductor are realized.
The radio frequency unit insulating layer 11 is arranged outside the radio frequency unit conductor layer 12 and is made of low-density polyethylene insulating material.
In an alternative embodiment, the insulation eccentricity of the radio frequency unit insulation layer 11 is not greater than 10%.
The radio frequency unit shielding layer 13 is arranged outside the radio frequency unit insulating layer 11 and is formed by weaving tinned copper wires; the cable has the advantages that the external interference resistance can be improved, the stability of signal transmission is guaranteed, and meanwhile, the tinned copper wire is adopted for weaving to enable the cable to have good bending performance.
As an alternative embodiment, the weaving density of the radio frequency unit shielding layer 13 is not less than 90%.
As an alternative embodiment, a water-blocking aramid filament 15 is placed at a radial position in the weaving process of the shielding layer 13 of the radio frequency unit, as shown in fig. 2; meanwhile, dense water-blocking glue is continuously filled to improve the mechanical tensile strength of the radio frequency unit and the integral waterproof and water-blocking performance.
The radio frequency unit protective layer 10 is arranged outside the radio frequency unit shielding layer 13, and is made of a cross-linked polyolefin sheath material or a thermoplastic polyurethane sheath material and extruded in a pressure type manner to form the radio frequency unit protective layer.
In this embodiment, the shielding signal unit includes a shielding signal unit conductor layer 8, a shielding signal unit insulating layer 9, a shielding signal unit water-blocking layer 7, a shielding signal unit shielding layer 6 and a shielding signal unit protective layer 5; the shielding signal unit conductor layer 8, the shielding signal unit insulating layer 9, the shielding signal unit water-resistant layer 7, the shielding signal unit shielding layer 6 and the shielding signal unit protective layer 5 are sequentially arranged from inside to outside;
specifically, the method comprises the following steps:
the shielding signal unit conductor layer 8 is formed by twisting a type 2 tinned copper conductor.
As an alternative embodiment, dense water-blocking glue is continuously filled in the twisting process of the tin-plated copper conductor, so that the water blocking and water proofing of the conductor are realized.
Shielding signal unit insulating layer 9 sets up outside shielding signal unit conductor layer 8, adopts the crowded package of double-deck crowded mode altogether to form, promptly: the inner layer adopts irradiation crosslinked polyethylene insulating material, and the outer layer adopts irradiation crosslinked polyolefin insulating material, and two kinds of materials are extruded simultaneously to form insulating core, the insulating core that obtains by double-deck crowded mode altogether has good insulating electrical properties, and makes insulating core have the fire resistance when guaranteeing electrical properties.
In an alternative embodiment, the insulated wire cores are twisted into a cable in the right direction and filled with water-blocking sealant, and meanwhile, the water-blocking layer 7 of the shielding signal unit is wrapped on the outer layer, so that the longitudinal water blocking of the cable is ensured through the water-blocking sealant and the water-blocking layer 7 of the shielding signal unit.
In an alternative embodiment, the covering rate of the water-blocking layer 7 of the shielding signal unit is 15% to 20%.
After the water-resistant layer 7 of the shielding signal unit is wrapped, the shielding signal unit shielding layer 6 is arranged outside the water-resistant layer 7 of the shielding signal unit, and the shielding signal unit shielding layer 6 is formed by weaving tinned copper wires, so that the external interference resistance of the shielding signal unit can be improved, the stability of signal transmission is ensured, and meanwhile, the cable has good flexibility.
In an alternative embodiment, the shielding layer 6 of the signal shielding element has a weaving density of not less than 90%.
As an alternative embodiment, a water-blocking aramid fiber wire 15 is placed at a radial position in the weaving process of the shielding layer 6 of the signal shielding unit, as shown in fig. 3; meanwhile, dense water-blocking glue is continuously filled to realize the integral longitudinal water-blocking performance.
The shielding signal unit protective layer 5 is arranged outside the shielding signal unit shielding layer 6, and is made of cross-linked polyolefin sheath material or thermoplastic polyurethane sheath material and extruded in a pressure type manner to form the shielding signal unit protective layer.
In this embodiment, the power line includes a power line conductor layer, a power line insulating layer 4, a power line water blocking layer 3, and a power line protective layer 2; the power line conductor layer, the power line insulating layer 4, the power line waterproof layer 3 and the power line protective layer 2 are sequentially arranged from inside to outside;
specifically, the method comprises the following steps:
the power line conductor layer is formed by twisting a class 2 tin-plated copper conductor.
As an alternative embodiment, dense water-blocking glue is continuously filled in the twisting process of the tin-plated copper conductor, so that the water blocking of the conductor is realized.
The power line insulating layer 4 is arranged outside the power line conductor layer and is formed by adopting a double-layer co-extrusion mode through extrusion, namely: the inner layer is made of irradiation crosslinking polyethylene insulating materials, the outer layer is made of irradiation crosslinking polyolefin insulating materials, the two materials are extruded simultaneously to form an insulating wire core, and the insulating wire core obtained by the double-layer co-extrusion mode has good insulating electrical performance.
As an alternative embodiment, the insulated wire cores are twisted into a cable in the right direction and filled with water-blocking sealant, and meanwhile, the outer layer is wrapped with the power line water-blocking layer 3, so that the longitudinal water blocking of the cable is ensured through the water-blocking sealant and the power line water-blocking layer 3.
In an alternative embodiment, the covering rate of the power line waterproof layer 3 is 15% to 20%.
The power line protective layer 2 is arranged outside the power line water-resistant layer 3, and is made of a cross-linked polyolefin sheath material or a thermoplastic polyurethane sheath material and extruded in a pressure type manner to form the power line protective layer.
In this embodiment, the carrier line 1 includes a carrier line conductor layer and a carrier line protection layer; the carrier wire conductor layer and the carrier wire protective layer are arranged in sequence from inside to outside;
specifically, the method comprises the following steps:
the carrier wire conductor layer adopts
Figure BDA0003577767880000101
The galvanized steel wires are stranded, and a water-blocking aramid fiber wire is added at the center of the stranding, so that the mechanical tensile strength of the bearing wire 1 is improved;
as an alternative embodiment, dense water-blocking glue is continuously filled in the stranding process of the galvanized steel conductor, so that the water-blocking and waterproof performance of the conductor is realized.
The bearing line protective layer is made of a cross-linked polyolefin sheath material or a thermoplastic polyurethane sheath material and is extruded in a pressure type manner to form the bearing line protective layer.
In this embodiment, the cable outer sheath 14 is made of a cross-linked polyolefin sheath material or a polyether thermoplastic polyurethane sheath material; the cross-linked polyolefin sheath material has good low-smoke halogen-free flame retardant property, is nontoxic, and has good corrosion resistance, wear resistance and ageing resistance. The polyether type thermoplastic polyurethane sheath material can enable the cable to have the characteristics of hydrolysis resistance, high strength, high resilience, low temperature resistance and the like.
In the embodiment, a gap between the shielding signal unit and the insulation wire core of the power line is filled with a water-blocking sealant, and the sealing material is suitable for the operating temperature of the cable and is compatible with the cable insulation material; meanwhile, the water blocking effect of the cable when encountering water is achieved by wrapping the water blocking layer, and the water blocking layer is tightly attached to the surface of the insulating wire core, so that the longitudinal water blocking performance of the cable is achieved.
In the embodiment, the cable is in a flat shape, the cable outer sheath is obtained by extrusion through a flat mold, the two ends of the cable outer sheath are respectively provided with a bearing wire, and the radio frequency unit, the signal shielding unit and the power line are horizontally arranged between the two bearing wires; and the outer sheath of the cable is extruded in a pressure type, so that the radio frequency unit, the signal shielding unit, the power line and the bearing line are tightly attached, the cable has better mechanical performance, electrical performance and good waterproof and water-blocking performance, the dragging, the hoisting and the deep water detection of underwater small equipment can be realized, and the cable can be used for electric control transmission, digital signal transmission, transmission of underwater video images and the like of the underwater detection.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims (10)

1. A flat watertight cable, comprising: the cable comprises a cable outer sheath extruded into a flat shape, and a radio frequency unit, a shielding signal unit, a power line and a bearing line which are arranged in the cable outer sheath, wherein the bearing line is positioned at two ends of the cable outer sheath, and the radio frequency unit, the shielding signal unit and the power line are horizontally arranged between the two bearing lines.
2. The flat watertight cable of claim 1, wherein the radio frequency unit comprises a radio frequency unit conductor layer, a radio frequency unit insulation layer, a radio frequency unit shielding layer and a radio frequency unit protection layer, which are sequentially disposed from inside to outside.
3. The flat watertight cable according to claim 2, wherein the radio frequency unit conductor layers are formed by twisting tinned copper conductors, water-blocking aramid filaments are added at the centers of the twisted tinned copper conductors, and water-blocking materials are filled in the twisting process of the tinned copper conductors;
or the radio frequency unit insulating layer is made of low-density polyethylene insulating material;
or the insulation eccentricity of the radio frequency unit insulation layer is not more than 10%;
or the radio frequency unit shielding layer is woven by tinned copper wires;
or, the weaving density of the radio frequency unit shielding layer is not less than 90%;
or, a water-blocking aramid fiber wire is respectively placed at the radial position in the weaving process of the radio frequency unit shielding layer, and meanwhile, a water-blocking material is filled;
or the radio frequency unit protective layer is formed by adopting a pressure type extruded cross-linked polyolefin sheathing material or a pressure type extruded thermoplastic polyurethane sheathing material.
4. The flat watertight cable according to claim 1, wherein the signal-shielding unit comprises a signal-shielding unit conductor layer, a signal-shielding unit insulation layer, a signal-shielding unit water-blocking layer, a signal-shielding unit shielding layer and a signal-shielding unit protection layer, which are arranged in this order from the inside to the outside.
5. The flat watertight cable according to claim 4, wherein the conductor layer of the shielding signal unit is formed by twisting tinned copper conductors and the water blocking material is filled during the twisting process;
or the insulating layer of the signal shielding unit is formed by extruding in a double-layer co-extrusion mode, wherein the double-layer co-extrusion mode is that an inner layer adopts irradiation cross-linked polyethylene insulating material, an outer layer adopts irradiation cross-linked polyolefin insulating material, and the two materials are extruded simultaneously to form an insulating wire core;
or the insulating wire cores are twisted into a cable in the right direction, filled with a water-blocking material and wrapped with a water-blocking layer for shielding the signal unit;
or the covering rate of the water-blocking layer of the signal shielding unit is 15-20%;
or the shielding layer of the signal shielding unit is woven by tinned copper wires;
or the weaving density of the shielding layer of the shielding signal unit is not less than 90%;
or, a water-blocking aramid fiber wire is respectively placed at the radial position in the weaving process of the shielding layer of the shielding signal unit, and a water-blocking material is filled at the same time;
or the signal shielding unit protection layer is made of a pressure type extruded cross-linked polyolefin sheath material or a pressure type extruded thermoplastic polyurethane sheath material.
6. A flat watertight cable according to claim 1, wherein the power line includes a power line conductor layer, a power line insulation layer, a power line water blocking layer and a power line protection layer which are arranged in this order from the inside to the outside.
7. The flat watertight cable according to claim 6, wherein the conductor layer of the power line is twisted by using tinned copper conductors, and a water blocking material is filled in the twisting process;
or the power line insulating layer is formed by extruding in a double-layer co-extrusion mode, wherein the double-layer co-extrusion mode is that an inner layer adopts irradiation cross-linked polyethylene insulating material, an outer layer adopts irradiation cross-linked polyolefin insulating material, and the two materials are extruded simultaneously to form an insulating wire core;
or the insulating wire cores are twisted into a cable in the right direction, filled with a water-blocking material and wrapped with a water-blocking layer of the power line;
or the cover overlapping rate of the power line water-resistant layer is 15% -20%;
or the power line protective layer is formed by adopting a pressure type extruded cross-linked polyolefin sheathing material or a pressure type extruded thermoplastic polyurethane sheathing material.
8. A flat watertight cable as claimed in claim 1, wherein the carrier wire comprises a carrier wire conductor layer and a carrier wire protection layer which are sequentially provided from the inside to the outside.
9. The flat watertight cable according to claim 8, wherein the carrier conductor layer is formed by twisting galvanized steel wires, water-blocking aramid fibers are added at the twisting center, and a water-blocking material is filled in the twisting process;
or the bearing line protective layer is made of a pressure type extruded cross-linked polyolefin sheathing material or a pressure type extruded thermoplastic polyurethane sheathing material.
10. A flat watertight cable as claimed in claim 1, wherein said cable outer sheath is a sheath material of cross-linked polyolefin or a sheath material of polyether type thermoplastic polyurethane.
CN202220747080.7U 2022-04-01 2022-04-01 Flat watertight cable Active CN216980153U (en)

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Application Number Priority Date Filing Date Title
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