Silicone rubber insulating high-temperature-resistant power cable

Abstract

The utility model relates to the technical field of high-temperature-resistant cables, in particular to a silicon rubber insulated high-temperature-resistant power cable, which comprises six cable cores, insulating layers are wrapped outside the cable cores, the cable cores are arranged in a fireproof frame, the outer contour and the inner contour of the fireproof frame are both regular hexagons, a tensile sleeve is arranged in the fireproof frame, and the tensile sleeve is sleeved with a sheath. Six fireproof partition plates are arranged between the fireproof frame and the tensile sleeve, a glass fiber layer is arranged outside the fireproof frame, a flame-retardant PVC layer is arranged outside the glass fiber layer, and an outer sheath is arranged outside the flame-retardant PVC layer; firstly, the cable cores are respectively placed in different accommodating gaps formed by the fireproof frame and the fireproof partition plate, and the fireproof frame has high stability, so that the cable cores in the fireproof frame can be better protected when the cable main body is impacted; the fire-proof partition plate and the fire-proof frame limit an ignition area in the accommodating gap for accommodating the cable core, so that the work of other cable cores is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of high temperature resistant cables, in particular to a silicone rubber insulated high temperature resistant power cable. Background Art

[0002] The wire and cable industry is the second largest industry in China after the automobile industry, with product variety satisfaction rate and domestic market share exceeding 90%;

[0003] At present, the cable cores inside cables on the market are all placed in the same area, and aluminum foil is often used to directly wrap and fix the cables. When the cables are squeezed, the cable cores squeeze and rub against each other, and when stretched, the cables are directly subjected to force, which can easily cause the insulation sheath to rupture, and multiple cable cores are in contact with each other. When a fire occurs, it will quickly spread between the cable cores, causing the entire cable to burn quickly. Utility Model Content

[0004] The utility model aims to provide a silicone rubber insulated high temperature resistant power cable, which solves the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a silicone rubber insulated high temperature resistant power cable, comprising six cable cores, the cable cores are all wrapped with insulating layers, the cable cores are all arranged in a fireproof frame, the outer contour and the inner contour of the fireproof frame are both regular hexagons, a tensile sleeve is arranged in the fireproof frame, six fireproof partitions are arranged between the fireproof frame and the tensile sleeve, a glass fiber layer is arranged outside the fireproof frame, a flame retardant PVC layer is arranged outside the glass fiber layer, and an outer sheath is arranged outside the flame retardant PVC layer.

[0007] Furthermore, the fireproof partitions are arranged in a circular array, one end of the fireproof partitions is fixedly connected to the tensile sleeve, and the other ends of the fireproof partitions are respectively fixedly connected to adjacent inner wall connections of the fireproof frame. The fireproof partitions evenly divide the area between the fireproof frame and the tensile sleeve into six accommodating gaps, and the cable cores are respectively arranged in the accommodating gaps.

[0008] Furthermore, the accommodating gap is filled with polyolefin, and the polyolefin is arranged outside the insulating layer.

[0009] Furthermore, six arched tensile strips are arranged on the outer side of the fireproof frame, the side of the arched tensile strip away from the fireproof frame is an arc surface, the six arc surfaces form a complete circular surface, and the material of the arched tensile strip is silicone rubber.

[0010] Furthermore, the outer surface of the arched tensile strip is wrapped with a mica tape, and the glass fiber layer is arranged on the outside of the mica tape.

[0011] Furthermore, a shielding layer is provided between the glass fiber layer and the flame-retardant PVC layer.

[0012] Furthermore, the outer sheath is made of silicone rubber.

[0013] Furthermore, a tensile wire core is arranged in the tensile sleeve.

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

[0015] The utility model places the cable cores independently in different accommodating spaces, wherein the accommodating spaces are composed of fireproof partitions and fireproof frames. If a fire occurs outside the fireproof frame, the fireproof frame protects the cable cores to prevent the cable cores from being damaged. If any cable core catches fire, the fireproof partitions and the fireproof frame limit the fire area to the accommodating space accommodating the cable core to prevent the work of other cable cores from being affected.

[0016] The utility model places the cable core in a fireproof frame, the outer contour and the inner contour of the fireproof frame are both regular hexagons, and the frame has high stability, so that the cable body can better protect the cable core in the fireproof frame when encountering impact, and the cable cores are placed in different accommodating gaps to prevent the cable cores from being squeezed and rubbed against each other.

[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 It is a side structural schematic diagram of the utility model;

[0021] Figure 3 for Figure 1 Schematic diagram of the fireproof frame structure;

[0022] Figure 4 for Figure 1 Schematic diagram of the side structure of the fireproof frame;

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

[0024] In the figure: 1, cable core; 101, insulation layer; 2, fireproof frame; 203, accommodation gap; 3, tensile sleeve; 301, tensile core; 4, fireproof partition; 5, arched tensile strip; 6, mica tape; 7, glass fiber layer; 8, shielding layer; 9, flame retardant PVC layer; 10, outer sheath; 11, polyolefin. 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 terms such as "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 silicone rubber insulated high temperature resistant power cable, comprising six cable cores 1, each of which is wrapped with an insulating layer 101, and each of which is arranged in a fireproof frame 2, and the outer contour and inner contour of the fireproof frame 2 are both regular hexagons, and a tensile sleeve 3 is arranged in the fireproof frame 2, and six fireproof partitions 4 are arranged between the fireproof frame 2 and the tensile sleeve 3, and a glass fiber layer 7 is arranged outside the fireproof frame 2, a flame retardant PVC layer 9 is arranged outside the glass fiber layer 7, and an outer sheath 10 is arranged outside the flame retardant PVC layer 9, and the material of the outer sheath 10 is silicone rubber. In this embodiment, the cable core 1 is placed in the fireproof frame 2, and the outer contour and inner contour of the fireproof frame 2 are both regular hexagons, which have high stability, so that the cable body can better protect the cable core 1 in the fireproof frame 2 when encountering an impact, and the material of the outer sheath 10 is silicone rubber, which has high temperature resistance, cold resistance, softness, wear resistance and corrosion resistance.

[0028] Among them, the fireproof partition 4 is arranged in a circular array, one end of the fireproof partition 4 is fixedly connected to the tensile sleeve 3, and the other end of the fireproof partition 4 is respectively fixedly connected to the adjacent inner wall connection of the fireproof frame 2, and the fireproof partition 4 evenly divides the area between the fireproof frame 2 and the tensile sleeve 3 into six accommodating gaps 203, and the cable cores 1 are respectively arranged in the accommodating gaps 203. In this embodiment, the fireproof partition 4 reinforces the fireproof frame 2 to prevent the fireproof frame 2 from deformation, and the cable cores 1 are independently placed in different accommodating gaps 203. If the outside of the fireproof frame 2 catches fire, the fireproof frame 2 protects the cable core 1 to prevent the cable core 1 from being damaged. If any cable core 1 catches fire, the fireproof partition 4 and the fireproof frame 2 limit the fire area to the accommodating gap 203 accommodating the cable core 1 to prevent the work of other cable cores 1 from being affected.

[0029] Among them, six arched tensile strips 5 are arranged on the outer side of the fire frame 2, and the side of the arched tensile strip 5 away from the fire frame 2 is an arc surface, and the six arc surfaces form a complete circular surface. The material of the arched tensile strip 5 is silicone rubber, and a tensile core 301 is arranged in the tensile sleeve 3. In this embodiment, the arched tensile strip 5 is in contact with the outer wall of the fire frame 2, and the arched tensile strip 5 and the tensile core 301 can improve the tensile resistance of the cable body. The arched tensile strip 5 made of silicone rubber can play a certain buffering role and protect the fire frame 2.

[0030] Among them, the accommodating gap 203 is filled with polyolefin 11, and the polyolefin 11 is arranged outside the insulating layer 101. The outer surface of the arched tensile strip 5 is wrapped by mica tape 6, and the glass fiber layer 7 is arranged on the outside of the mica tape 6. A shielding layer 8 is arranged between the glass fiber layer 7 and the flame-retardant PVC layer 9. In this embodiment, the polyolefin 11 arranged outside the insulating layer 101 can implement a good air barrier for the insulating layer 101, effectively reducing the occurrence of toxic gases and smoke when a fire occurs. The complete circular surface of the arc surface of the arched tensile strip 5 is convenient for wrapping with the mica tape 6. The mica tape 6 has high fire resistance, and the glass fiber has good insulation and flame retardancy. The glass fiber layer 7 increases the flame retardant effect, and the flame retardant PVC layer 9 further improves the fire resistance of the cable.

[0031] It can be understood that, firstly, the cable cores 1 are respectively placed in different accommodating gaps 203 formed by the fireproof frame 2 and the fireproof partition 4. The fireproof frame 2 has high stability, so that the cable body can better protect the cable core 1 in the fireproof frame 2 when encountering impact. Secondly, if any cable core 1 catches fire, the fireproof partition 4 and the fireproof frame 2 will limit the fire area to the accommodating gap 203 accommodating the cable core 1 to prevent the operation of other cable cores 1 from being affected.

[0032] A specific application of this embodiment is: the outermost layer of the power cable is an outer sheath 10 made of silicone rubber material, which has high temperature resistance, cold resistance, softness, wear resistance and corrosion resistance. A glass fiber layer 7 and a flame retardant PVC layer 9 are arranged in the outer sheath 10. The glass fiber layer 7 and the flame retardant PVC layer 9 have good insulation and flame retardancy, which improve the fire resistance of the power cable. The cable core 1 is placed in different accommodating gaps 203 formed by the fireproof frame 2 and the fireproof partition 4. The outer contour and the inner contour of the fireproof frame 2 are both regular hexagons, which have high stability, so that the cable body can better protect the cable core 1 in the fireproof frame 2 when encountering an impact, and the cable core 1 is placed in different accommodating spaces 203, which can prevent the cable cores 1 from being squeezed and rubbed against each other. The accommodating space 203 is composed of a fireproof partition 4 and a fireproof frame 2. If a fire occurs outside the fireproof frame 2, the fireproof frame 2 protects the cable core 1 to prevent the cable core 1 from being damaged. If any cable core 1 catches fire, the fireproof partition 4 and the fireproof frame 2 limit the fire area to the accommodating space 203 accommodating the cable core 1 to prevent the work of other cable cores 1 from being affected. The power cable is also provided with an arched tensile strip 5 and a tensile core 301 for improving the tensile strength of the power cable body. The outer surface of the arched tensile strip 5 is wrapped with a mica tape 6 to further improve the fire resistance of the power cable.

[0033] 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.

[0034] 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 silicone rubber insulated high temperature resistant power cable, comprising six cable cores (1), each of which is wrapped with an insulating layer (101), characterized in that: The cable cores (1) are all arranged in a fireproof frame (2), the outer contour and the inner contour of the fireproof frame (2) are both regular hexagons, a tensile sleeve (3) is arranged in the fireproof frame (2), six fireproof partitions (4) are arranged between the fireproof frame (2) and the tensile sleeve (3), a glass fiber layer (7) is arranged outside the fireproof frame (2), a flame-retardant PVC layer (9) is arranged outside the glass fiber layer (7), and an outer sheath (10) is arranged outside the flame-retardant PVC layer (9).

2. A silicone rubber insulated high temperature resistant power cable according to claim 1, characterized in that: The fireproof partitions (4) are arranged in a circular array, one end of the fireproof partitions (4) is fixedly connected to the tension sleeve (3), and the other ends of the fireproof partitions (4) are respectively fixedly connected to adjacent inner wall connections of the fireproof frame (2). The fireproof partitions (4) evenly divide the area between the fireproof frame (2) and the tension sleeve (3) into six accommodating gaps (203), and the cable cores (1) are respectively arranged in the accommodating gaps (203).

3. A silicone rubber insulated high temperature resistant power cable according to claim 2, characterized in that: The accommodating gap (203) is filled with polyolefin (11), and the polyolefin (11) is arranged outside the insulating layer (101).

4. The silicone rubber insulated high temperature resistant power cable according to claim 1, characterized in that: Six arched tensile strips (5) are arranged on the outer side of the fireproof frame (2); the side of the arched tensile strip (5) away from the fireproof frame (2) is an arc surface; the six arc surfaces form a complete circular surface; and the material of the arched tensile strip (5) is silicone rubber.

5. The silicone rubber insulated high temperature resistant power cable according to claim 4, characterized in that: The outer surface of the arched tensile strip (5) is wrapped with a mica tape (6), and the glass fiber layer (7) is arranged on the outside of the mica tape (6).

6. The silicone rubber insulated high temperature resistant power cable according to claim 1, characterized in that: A shielding layer (8) is provided between the glass fiber layer (7) and the flame-retardant PVC layer (9).

7. The silicone rubber insulated high temperature resistant power cable according to claim 1, characterized in that: The material of the outer sheath (10) is silicone rubber.

8. The silicone rubber insulated high temperature resistant power cable according to claim 1, characterized in that: A tensile wire core (301) is arranged inside the tensile sleeve (3).

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