Mineral insulated cable

Abstract

The utility model discloses a mineral insulated cable, including wear-resistant layer, spring, flame-proof layer, shielding layer, waterproof layer, packing layer, cable core and isolation frame, spring is wrapped in the wear-resistant layer, flame-proof layer is located inside the wear-resistant layer, shielding layer is located inside the flame-proof layer, waterproof layer is located inside the shielding layer, packing layer is located inside the waterproof layer, the packing layer is located inside the waterproof layer, and the packing layer is located inside the packing layer. The filling layer is located on the inner side of the waterproof layer, the wire core penetrates through the filling layer, and the isolation frame is located on one side of the wire core. According to the utility model, through the arrangement of the spring, the toughness of the cable can be increased, the cable can be prevented from being broken due to folding, and through the arrangement of the filling layer and the isolation frame, the filling layer is made of mineral substances and can effectively wrap the cable cores and cooperate with the isolation frame to separate the cable cores, thereby achieving the mineral isolation and insulation effects.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a mineral insulated cable. Background Art

[0002] Mineral insulated cable, referred to as MI cable, is usually called mineral cable or mineral fireproof cable in China when used for wiring. my country clearly stipulates that mineral insulated non-combustible cables are composed of copper core, mineral insulation materials, copper and other metal sheaths. In addition to having good electrical conductivity, mechanical and physical properties, and fire resistance, they also have good non-combustibility. In the event of a fire, this cable can not only ensure fire-fighting power supply within the duration of the fire, but also prevent it from spreading.

[0003] At present, mineral cables often break during use. According to investigation, mineral cables have poor toughness in the past. Frequent folding of the cables will lead to breakage, and minerals will leak out, thus affecting the insulation effect of the cables. Therefore, this application proposes a mineral insulated cable to solve this problem.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] The purpose of the utility model is to provide a mineral insulated cable to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mineral insulated cable, comprising a wear-resistant layer, a spring, a flame-insulating layer, a shielding layer, a waterproof layer, a filling layer, a wire core and an isolation frame, the spring is wrapped in the wear-resistant layer, the flame-insulating layer is located on the inner side of the wear-resistant layer, the shielding layer is located on the inner side of the flame-insulating layer, the waterproof layer is located on the inner side of the shielding layer, the filling layer is located on the inner side of the waterproof layer, the wire core passes through the filling layer, and the isolation frame is located on one side of the wire core.

[0007] Preferably, the wear-resistant layer is formed by a rubber sleeve, and the spring is connected to the wear-resistant layer by hot-melt bonding.

[0008] Preferably, the flame-isolating layer is made of polyolefin material, and the flame-isolating layer is bonded to the rubber layer.

[0009] Preferably, the shielding layer is formed by carbon fiber coating, and the shielding layer is sprayed on the inner side of the flame-isolating layer.

[0010] Preferably, the waterproof layer is made of rubber, and the waterproof layer is sleeved with the flame-isolating layer.

[0011] Preferably, the filling layer is composed of mineral particles, and the filling layer wraps the wire core.

[0012] Preferably, the isolation frame is connected to the waterproof layer by hot-melt, and the isolation layer isolates each wire core.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discloses a mineral insulated cable, which is provided with a spring. The provision of the spring can increase the toughness of the cable and prevent the cable from being folded and broken. The filling layer and the isolation frame are provided. The filling layer is composed of minerals and can effectively wrap the wire core. The isolation frame is used to separate each wire core, thereby achieving the effect of mineral isolation and insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be 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 paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a mineral insulated cable according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of a mineral insulated cable according to an embodiment of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the connection structure between the wear-resistant layer and the spring in a mineral insulated cable according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] 1. Wear-resistant layer; 2. Spring; 3. Flame-retardant layer; 4. Shielding layer; 5. Waterproof layer; 6. Filling layer; 7. Wire core; 8. Isolation frame. DETAILED DESCRIPTION

[0021] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0022] See also Figure 1-3According to an embodiment of the utility model, a mineral insulated cable comprises a wear-resistant layer 1, a spring 2, a flame-proof layer 3, a shielding layer 4, a waterproof layer 5, a filling layer 6, a core 7 and an isolation frame. The spring 2 is wrapped in the wear-resistant layer 1, the flame-proof layer 3 is located on the inner side of the wear-resistant layer 1, the shielding layer 4 is located on the inner side of the flame-proof layer 3, the waterproof layer 5 is located on the inner side of the shielding layer 4, the filling layer 6 is located on the inner side of the waterproof layer 5, the core 7 runs through the filling layer 6, and the isolation frame 8 is located on one side of the core 7. The utility model can increase the toughness of the cable and prevent the cable from being folded and broken by the arrangement of the spring 2. By arranging the filling layer 6 and the isolation frame 8, the filling layer is composed of minerals and can effectively wrap the core 7. The isolation frame 8 is used to separate each core 7, thereby achieving the effect of mineral isolation and insulation.

[0023] According to the above solution of the utility model, the wear-resistant layer 1 is formed by a rubber sleeve, and the spring 2 is connected to the wear-resistant layer 1 by hot-melt bonding. The arrangement of the spring 2 is used to increase the toughness of the cable.

[0024] According to the above solution of the utility model, the flame-isolating layer 3 is made of polyolefin material, and the flame-isolating layer 3 is bonded and connected to the rubber layer for flame-retardant work.

[0025] According to the above solution of the utility model, the shielding layer 4 is formed by a carbon fiber coating, and the shielding layer 4 is sprayed on the inner side of the flame-isolating layer 3 to shield electromagnetic signals.

[0026] According to the above solution of the utility model, the waterproof layer 5 is made of rubber, and the waterproof layer 5 is sleeved with the flame-isolating layer 3 for waterproofing.

[0027] According to the above solution of the utility model, the filling layer 6 is composed of mineral particles, and the filling layer 6 wraps the wire core 7 for insulation work.

[0028] According to the above solution of the utility model, the isolation frame 8 is connected to the waterproof layer 5 by hot-melt connection, and the isolation frame 8 isolates each wire core 7 and is used to separate the wire core 7 to prevent interference.

[0029] During specific use, the provision of the spring 2 can increase the toughness of the cable and prevent the cable from being folded and broken; the provision of the filling layer 6, which is composed of minerals, can effectively wrap the wire core 7, thereby achieving the effect of mineral insulation.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mineral insulated cable, characterized in that: The invention comprises a wear-resistant layer (1), a spring (2), a flame-isolating layer (3), a shielding layer (4), a waterproof layer (5), a filling layer (6), a wire core (7) and an isolation frame, wherein the spring (2) is wrapped in the wear-resistant layer (1), the flame-isolating layer (3) is located on the inner side of the wear-resistant layer (1), the shielding layer (4) is located on the inner side of the flame-isolating layer (3), the waterproof layer (5) is located on the inner side of the shielding layer (4), the filling layer (6) is located on the inner side of the waterproof layer (5), the wire core (7) runs through the filling layer (6), and the isolation frame (8) is located on one side of the wire core (7).

2. A mineral insulated cable according to claim 1, characterized in that: The wear-resistant layer (1) is formed by a rubber sleeve, and the spring (2) is connected to the wear-resistant layer (1) by hot-melt bonding.

3. A mineral insulated cable according to claim 2, characterized in that: The flame-isolating layer (3) is made of polyolefin material, and the flame-isolating layer (3) is bonded to the rubber layer.

4. A mineral insulated cable according to claim 3, characterized in that: The shielding layer (4) is formed by a carbon fiber coating, and the shielding layer (4) is sprayed on the inner side of the flame-isolating layer (3).

5. A mineral insulated cable according to claim 4, characterized in that: The waterproof layer (5) is made of rubber, and the waterproof layer (5) is sleeved with the flame-isolating layer (3).

6. A mineral insulated cable according to claim 1, characterized in that: The filling layer (6) is composed of mineral particles, and the filling layer (6) wraps the wire core (7).

7. A mineral insulated cable according to claim 6, characterized in that: The isolation frame (8) is connected to the waterproof layer (5) by hot-melt connection, and the isolation frame (8) isolates each wire core (7).

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