High-temperature-resistant watertight flexible cable

Abstract

The utility model belongs to the technical field of watertight cables, and particularly relates to a high-temperature-resistant watertight flexible cable, which comprises a cable, a guide core and an outer sheath, the waterproof layer is located between the conductor cores and the outer sheath; and spiral water-blocking tapes and longitudinal water-blocking yarns which are layered inside and outside are arranged inside the waterproof layer, and gaps are filled mutually through staggered distribution of the spiral water-blocking tapes and the longitudinal water-blocking yarns. According to the utility model, a multi-layer composite waterproof structure can be formed in the cable, and when the cable is bent, gaps among the multiple layers of waterproof structures are mutually compensated, so that the stable sealing and waterproof performance of the cable can be maintained in different use states.

Description

Technical Field

[0001] This utility model belongs to the field of watertight cable technology, and in particular relates to a high-temperature resistant watertight flexible cable. Background Technology

[0002] Watertight flexible cables are waterproof cables with flexible materials such as polyurethane or nitrile elastomer as their sheath. Their core characteristics include high water resistance, bending resistance, and dynamic environmental adaptability. They are commonly used in equipment for underwater operations such as submersible motors and deep-sea exploration.

[0003] Currently, the water-blocking layer of traditional watertight cables is mostly a single water-blocking adhesive or foam tape, which is prone to cracking and longitudinal water seepage when dynamically bent.

[0004] To address the aforementioned issues, this application proposes a high-temperature resistant, watertight flexible cable. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature resistant, watertight flexible cable that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a high-temperature resistant watertight flexible cable, including the cable, its internal conductor core and outer sheath;

[0008] A waterproof layer is located between the conductor core and the outer sheath;

[0009] The waterproof layer has an inner and outer layer of spiral water-blocking tape and longitudinal water-blocking yarn, which are interleaved to fill the gaps between them.

[0010] Furthermore, the spiral water-blocking tape is spirally wound around the outside of the guide core, with a winding gap of ≤0.3mm.

[0011] Furthermore, the longitudinal water-blocking yarn is attached to the outer side of the spiral water-blocking belt along the axis of the guide core.

[0012] Furthermore, the longitudinal water-blocking yarn has a symmetrical arc-shaped structure, consisting of an inner layer on the left and an outer layer on the right.

[0013] Furthermore, the outer pressure layer is attached to the outer side of the inner layer of the left section of the adjacent longitudinal water-blocking yarn, forming a double-layer sealing structure.

[0014] Furthermore, the waterproof layer also includes a water-blocking coating applied to the outside of the longitudinal water-blocking yarn to fill the gap between the outer pressure layer and the inner stack.

[0015] This utility model has the following beneficial effects:

[0016] This invention uses inner and outer layered spiral water-blocking tape and longitudinal water-blocking yarn to form a composite waterproof structure on the outside of the guide core. This structure maintains its sealing performance during underwater and bending operations by compensating for the gaps between the layers, thus preventing penetration. It is suitable for use in equipment for underwater operations such as submersible motors and deep-sea exploration.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the cable cross-section structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the adjacent longitudinal water-blocking yarn combination structure of this utility model;

[0022] The attached diagram lists the components represented by each number as follows:

[0023] In the picture:

[0024] 1. Cable; 2. Waterproof layer;

[0025] 110. Conductor core; 120. Outer sheath;

[0026] 210. Spiral water-blocking tape; 220. Longitudinal water-blocking yarn; 230. Water-blocking coating;

[0027] 221. Inner layer; 222. Outer layer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Please see Figure 1-3 As shown, this utility model is a high-temperature resistant watertight flexible cable, including a cable 1, and its internal conductor 110 and outer sheath 120.

[0031] Waterproof layer 2 is located between conductor core 110 and outer sheath 120. Waterproof layer 2 is installed before conductor core 110 enters the extrusion coating process, thus forming a built-in waterproof mechanism inside cable 1.

[0032] The interior of the waterproof layer 2 is provided with an inner and outer layer of spiral water-blocking tape 210 and longitudinal water-blocking yarn 220. When the cable 1 bends, the spiral water-blocking tape 210 and the longitudinal water-blocking yarn 220 deform each other through an interlaced distribution, thereby filling the gaps caused by the deformation, thus maintaining the stability of the waterproof structure when the cable 1 bends.

[0033] Preferably, the spiral water-blocking tape 210 is composed of a foamed polyethylene substrate with a silicone coating, and is spirally wound around the outside of the guide core 110 with a winding gap ≤0.3mm.

[0034] Preferably, the longitudinal water-blocking yarn 220 is made of aramid fiber impregnated with polyurethane resin and is attached to the outer side of the spiral water-blocking belt 210 along the axis of the guide core 110.

[0035] Preferably, the longitudinal water-blocking yarn 220 has a symmetrical arc-shaped structure, which is divided into an inner layer 221 on the left and an outer pressure layer 222 on the right. When the longitudinal water-blocking yarn 220 is bonded, the inner layer 221 on the left first contacts the spiral water-blocking tape 210, while the right side contacts it later. This allows the outer pressure layer 222 to be bonded to the outside of the inner layer 221 on the left, forming a double-layer sealing structure.

[0036] Preferably, the waterproof layer 2 further includes a water-blocking coating 230, which is applied to the outside of the longitudinal water-blocking yarn 220 to fill the gap between the outer pressure layer 222 and the inner stack 221, thereby preventing the existence of penetration gaps between adjacent longitudinal water-blocking yarns 220.

[0037] It is understood that this utility model can form a multi-layered composite waterproof structure inside the cable 1, and when the cable 1 is bent, the gaps between the multi-layered waterproof structures compensate for each other, thereby maintaining stable sealing and waterproof performance under different usage conditions of the cable 1.

[0038] A specific application of the operation process in this embodiment is as follows: First, before the core 110 is extruded and coated, the spiral water-blocking tape 210 and the longitudinal water-blocking yarn 220 are sequentially wound, bonded, and coated on the outside of the core 110, so that the inner layer 221 is pressed below by the outer pressure layer 222 to form a double bond. Finally, the outer layer is coated with a water-blocking coating 230 to fill the gaps, thereby achieving a multi-linked waterproof effect. Furthermore, during operation, as the cable 1 bends, the longitudinal water-blocking yarn 220 and the spiral water-blocking tape 210 compensate for each other's gaps to achieve an automatic strengthening of the sealing effect, thereby preventing the cable 1 from penetrating and affecting normal use.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-temperature resistant, watertight flexible cable, characterized in that: Includes a cable (1), and its internal conductor (110) and outer sheath (120); A waterproof layer (2) is located between the conductor core (110) and the outer sheath (120); The waterproof layer (2) has an inner and outer layered spiral water-blocking strip (210) and longitudinal water-blocking yarn (220) inside, which fill the gaps between each other through staggered distribution.

2. The high-temperature resistant watertight flexible cable according to claim 1, characterized in that: The spiral water-blocking tape (210) is spirally wound around the outside of the guide core (110), with a winding gap of ≤0.3mm.

3. The high-temperature resistant watertight flexible cable according to claim 1, characterized in that: The longitudinal water-blocking yarn (220) is attached to the outer side of the spiral water-blocking belt (210) along the axis of the guide core (110).

4. The high-temperature resistant watertight flexible cable according to claim 1, characterized in that: The longitudinal water-blocking yarn (220) has a symmetrical arc-shaped structure, consisting of an inner layer (221) on the left and an outer layer (222) on the right.

5. A high-temperature resistant watertight flexible cable according to claim 4, characterized in that: The outer pressure layer (222) is attached to the outer side of the inner stack (221) of the left section of the adjacent longitudinal water-blocking yarn (220) to form a double-layer sealing structure.

6. A high-temperature resistant watertight flexible cable according to claim 4, characterized in that: The waterproof layer (2) also includes a water-blocking coating (230) applied to the outside of the longitudinal water-blocking yarn (220) to fill the gap between the outer pressure layer (222) and the inner stack (221).

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