High-temperature-resistant tensile cable

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a high-temperature-resistant tensile cable, which comprises a cable core, a filling layer arranged outside the cable core, and an inner coating layer for molding and fixing the filling layer outside the cable core, a plurality of inner flame-retardant layers are adhered outside the inner coating layer and are distributed circumferentially, and the inner flame-retardant layers are coated outside the cable core. The cable comprises an inner flame-retardant layer, the inner flame-retardant layer can be continuously spliced in the axial direction of the cable, reinforcing ribs are arranged outside the inner flame-retardant layer, the reinforcing ribs can also be continuously spliced in the axial direction of the cable, an outer flame-retardant layer is attached to the outer portions of the inner flame-retardant layer and the reinforcing ribs, and a high-temperature-resistant layer is formed outside the outer flame-retardant layer. Firstly, the thicker flame-retardant layer is arranged to effectively protect the cable after being damaged, the reinforcing ribs are arranged in the flame-retardant layer to ensure the structural strength of the cable, the V-shaped ribs in the reinforcing ribs can also effectively support the interior of the cable, and secondly, the inner flame-retardant layer and the reinforcing ribs of the splicing structure are arranged, so that the occupied space of raw materials is reduced, and the cable is convenient to assemble; and meanwhile, the structural strength after connection can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, in particular to a high temperature resistant and tensile resistant cable. Background Art

[0002] High temperature resistant tensile cable is a cable specially designed to operate in high temperature environment and need to withstand tension. The outer material and internal conductor of this cable are specially treated to adapt to high temperature environment and ensure the normal operation of the cable;

[0003] After the high-temperature protective layer on the outside of traditional high-temperature resistant cables is damaged, the internal structure is easily corroded by high temperature or even open flames. The high-temperature resistance after damage needs to be improved. In addition, the reinforcement ribs inside traditional high-temperature resistant cables are generally set in a straight line, and their tensile resistance and assembly connection effect also need to be improved.

[0004] In order to solve the above problems, a high temperature resistant and tensile resistant cable is proposed in the present application. Utility Model Content

[0005] The utility model aims to provide a high temperature resistant and tensile resistant cable, which solves the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a high temperature resistant and tensile resistant cable, comprising a cable core and a filling layer arranged outside the cable core, the filling layer is formed and fixed on an inner covering layer outside the cable core, an inner flame retardant layer is bonded to the outside of the inner covering layer, the inner flame retardant layer is a plurality of circumferentially distributed inner flame retardant layers, and the inner flame retardant layer can be continuously spliced ​​along the axial direction of the cable, reinforcing ribs are arranged outside the inner flame retardant layer, the reinforcing ribs can also be continuously spliced ​​along the axial direction of the cable, an outer flame retardant layer is bonded to the outside of the inner flame retardant layer and the reinforcing ribs, a high temperature resistant layer is formed on the outside of the outer flame retardant layer, the reinforcing ribs include V-shaped ribs and straight ribs, and the reinforcing ribs are embedded between the inner flame retardant layer and the outer flame retardant layer.

[0008] Furthermore, the V-shaped ribs are located in the middle of the reinforcing ribs, the straight ribs are located at both ends of the reinforcing ribs, two axially adjacent reinforcing ribs are spaced apart, and the straight ribs between two adjacent reinforcing ribs are simultaneously located on a local annular surface outside the inner flame retardant layer.

[0009] Furthermore, a V-shaped groove for partially embedding reinforcing ribs is provided on the outer surface of the inner flame retardant layer, and a No. 1 straight groove and a No. 2 straight groove for embedding the V-shaped ribs are opened at one end of the inner flame retardant layer.

[0010] Furthermore, the first straight groove is interconnected with the V-shaped groove on the inner flame retardant layer, and the second straight groove is interconnected with another V-shaped groove outside the inner flame retardant layer.

[0011] Furthermore, the outer flame retardant layer includes a support block formed on the inner side and a positioning groove opened in the support block.

[0012] Furthermore, the support block is supported outside the inner flame retardant layer, and the positioning groove is clamped outside the reinforcing rib.

[0013] Furthermore, the reinforcing ribs are symmetrically distributed between the inner flame retardant layer and the outer flame retardant layer.

[0014] The utility model has the following beneficial effects:

[0015] The utility model provides a flame retardant layer with a certain thickness distributed inside and outside, which can play an effective flame retardant effect after the high temperature resistant layer is damaged. At the same time, the reinforcing ribs are placed inside the flame retardant layer, and the structure is more compact without causing a significant impact on the performance of the flame retardant layer. The wave shape of the reinforcing ribs has better toughness and tensile resistance than the straight structure.

[0016] The utility model arranges the inner flame retardant layer and the reinforcing ribs into a spliced ​​structure, which can reduce the occupied space and facilitate assembly compared with winding. At the same time, the overall strength and performance can be guaranteed through the connection structure.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0020] Figure 2 for Figure 1 Schematic diagram of the structure from a bird's-eye view;

[0021] Figure 3 It is a schematic diagram of the structure of the partially disassembled utility model;

[0022] Figure 4 It is a structural schematic diagram of the cable cross section in the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1. cable core; 2. filling layer; 3. inner coating layer; 4. inner flame retardant layer; 41. V-shaped groove; 42. No. 1 straight groove; 43. No. 2 straight groove; 5. reinforcing ribs; 51. V-shaped ribs; 52. straight ribs; 6. outer flame retardant layer; 61. support block; 62. positioning groove; 7. high temperature resistant layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] See also Figure 1-4 As shown, the utility model is a high-temperature resistant and tensile-resistant cable, comprising a cable core 1 and a filling layer 2 arranged on the outside of the cable core 1, the filling layer 2 is molded and fixed on the inner coating layer 3 outside the cable core 1, the inner coating layer 3 is bonded with an inner flame-retardant layer 4 on the outside, the inner flame-retardant layer 4 is a plurality of circumferentially distributed inner flame-retardant layers 4, and the inner flame-retardant layer 4 can be continuously spliced ​​along the axial direction of the cable, the inner flame-retardant layer 4 is provided with reinforcing ribs 5 on the outside, the reinforcing ribs 5 can also be continuously spliced ​​along the axial direction of the cable, the inner flame-retardant layer 4 and the reinforcing ribs 5 are bonded with an outer flame-retardant layer 6 on the outside, the outer flame-retardant layer 6 is molded with a high-temperature resistant layer 7 on the outside, the reinforcing ribs 5 include V-shaped ribs 51 and straight ribs 52, and the reinforcing ribs 5 are embedded between the inner flame-retardant layer 4 and the outer flame-retardant layer 6.

[0028] Among them, the V-shaped rib 51 is located in the middle of the reinforcing rib 5, the straight rib 52 is located at both ends of the reinforcing rib 5, and the two axially adjacent reinforcing ribs 5 are spaced apart, and the straight rib 52 between the two adjacent reinforcing ribs 5 is also located on the local annular surface outside the inner flame retardant layer 4. In this embodiment, the V-shaped rib 51 in the reinforcing rib 5 enhances the connection reliability with the inner flame retardant layer 4 and the high temperature resistant layer 7, and the straight rib 52 facilitates the connection and assembly work between the two axially adjacent reinforcing ribs 5.

[0029] Among them, the outer surface of the inner flame retardant layer 4 is provided with a V-shaped groove 41 for partial embedding of the reinforcing rib 5, and one end of the inner flame retardant layer 4 is provided with a No. 1 straight groove 42 and a No. 2 straight groove 43 for embedding the V-shaped rib 51. The No. 1 straight groove 42 is interconnected with the V-shaped groove 41 on the inner flame retardant layer 4, and the No. 2 straight groove 43 is interconnected with another V-shaped groove 41 outside the inner flame retardant layer 4. In this embodiment, the No. 1 straight groove 42 and the No. 2 straight groove 43 are used for connecting two axially adjacent reinforcing ribs 5 through the V-shaped rib 51. The structural strength of the overlapping part of the straight rib 52 is relatively high, so the connection does not affect the local strength of the cable.

[0030] Among them, the outer flame retardant layer 6 includes a support block 61 formed on the inner side and a positioning groove 62 opened in the support block 61. The support block 61 is supported on the outside of the inner flame retardant layer 4, and the positioning groove 62 is stuck on the outside of the reinforcing rib 5. In this embodiment, the support of the support block 61 and the No. 1 straight groove 42 ensures the external shape of the outer flame retardant layer 6. The outer flame retardant layer 6 is formed with a cavity at the contact position between the support block 61 and the inner flame retardant layer 4. The cavity can play a buffering effect, and the positioning groove 62 is set to enhance the connection reliability between the reinforcing rib 5 and the outer flame retardant layer 6.

[0031] Among them, the reinforcing ribs 5 are symmetrically distributed between the inner flame retardant layer 4 and the outer flame retardant layer 6. In this embodiment, the reinforcing ribs 5 are symmetrically distributed and partially embedded therein, which ensures the connection reliability between the reinforcing ribs 5 and the flame retardant layer, and also ensures the structural reliability of the cable.

[0032] It can be understood that firstly, setting a thicker flame retardant layer can effectively protect the cable after 8 is damaged, placing the reinforcing ribs 5 inside the flame retardant layer, ensuring the structural strength of the cable, and the V-shaped ribs 51 in the reinforcing ribs 5 can also effectively support the inside of the cable. Secondly, setting the inner flame retardant layer 4 and reinforcing ribs 5 of the splicing structure can reduce the space occupied by raw materials and facilitate assembly, while also ensuring the structural strength after connection.

[0033] A specific application of this embodiment is: a filling layer 2 is arranged on the outside of the cable core 1 and is formed by an inner coating layer 3; the outside of the inner coating layer 3 is wrapped by three circumferentially distributed inner flame retardant layers 4; glue can be applied at the connection between the inner flame retardant layer 4 and the inner coating layer 3 to assist the connection; and then the reinforcing ribs 5 are docked on the outside of the inner flame retardant layer 4; when the reinforcing ribs 5 are continuously connected, the V-shaped ribs 51 at both ends and the No. 2 straight groove 43 are matched and docked; after docking, the inner flame retardant layer 4 and the outside of the reinforcing ribs 5 are connected to the outer flame retardant layer 6; the support block 61 in the outer flame retardant layer 6 is fitted and supported on the outside of the inner flame retardant layer 4; at this time, the reinforcing ribs 5 are partially embedded in the positioning groove 62; and finally, they are molded 8 on the outside of the cable to complete the assembly molding of the cable; at this time, the flame retardant layer and the reinforcing ribs 5 are integrally connected.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high temperature resistant and tensile resistant cable, comprising a cable core (1) and a filling layer (2) arranged outside the cable core (1), wherein the filling layer (2) is formed and fixed to an inner coating layer (3) outside the cable core (1), characterized in that: The inner coating layer (3) is bonded to the outside with an inner flame retardant layer (4), the inner flame retardant layer (4) is a plurality of ribs distributed circumferentially, and the inner flame retardant layer (4) can be continuously spliced ​​along the axial direction of the cable, the inner flame retardant layer (4) is provided with reinforcing ribs (5) on the outside, the reinforcing ribs (5) can also be continuously spliced ​​along the axial direction of the cable, the inner flame retardant layer (4) and the reinforcing ribs (5) are bonded to the outside with an outer flame retardant layer (6), the outer flame retardant layer (6) is molded with a high temperature resistant layer (7), the reinforcing ribs (5) include V-shaped ribs (51) and straight ribs (52), and the reinforcing ribs (5) are embedded between the inner flame retardant layer (4) and the outer flame retardant layer (6).

2. A high temperature resistant tensile cable according to claim 1, characterized in that: The V-shaped ribs (51) are located in the middle of the reinforcing ribs (5), the straight ribs (52) are located at both ends of the reinforcing ribs (5), two axially adjacent reinforcing ribs (5) are spaced apart, and the straight ribs (52) between two adjacent reinforcing ribs (5) are simultaneously located on a local annular surface outside the inner flame retardant layer (4).

3. A high temperature resistant tensile cable according to claim 1, characterized in that: The outer surface of the inner flame retardant layer (4) is provided with a V-shaped groove (41) for partially embedding the reinforcing rib (5), and one end of the inner flame retardant layer (4) is provided with a first straight groove (42) and a second straight groove (43) for embedding the V-shaped rib (51).

4. A high temperature resistant tensile cable according to claim 3, characterized in that: The first straight groove (42) is interconnected with a V-shaped groove (41) on the inner flame retardant layer (4), and the second straight groove (43) is interconnected with another V-shaped groove (41) outside the inner flame retardant layer (4).

5. The high temperature resistant tensile cable according to claim 1, characterized in that: The outer flame retardant layer (6) comprises a support block (61) formed on the inner side and a positioning groove (62) provided in the support block (61).

6. A high temperature resistant tensile cable according to claim 5, characterized in that: The support block (61) is supported on the outside of the inner flame retardant layer (4), and the positioning groove (62) is clamped on the outside of the reinforcing rib (5).

7. A high temperature resistant tensile cable according to claim 1, characterized in that: The reinforcing ribs (5) are symmetrically distributed between the inner flame retardant layer (4) and the outer flame retardant layer (6).

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