Super-high-temperature-resistant oil-resistant cold-resistant flexible fireproof power cable

Abstract

The utility model provides a flexible fireproof power cable with super high temperature resistance, oil resistance and cold resistance, which comprises a conductor, an insulating layer, a fireproof layer, a filling layer, a wrapping layer and a fireproof layer, and is characterized in that the outer surface of the conductor is wrapped and fixedly provided with the insulating layer, and the outer surface of the insulating layer is sleeved and fixedly provided with a heat exchange structure; the heat exchange structure is wrapped and fixedly provided with a fireproof layer. The filling layer is fixedly installed outside the fireproof layer in a wrapping mode, the wrapping layer is fixedly installed outside the filling layer in a wrapping mode, and the fireproof layer is fixedly installed outside the wrapping layer in a wrapping mode. A protective layer is fixedly mounted outside the fireproof layer in a wrapping manner; according to the utility model, the whole arrangement can be used in various different environment states, so that not only is the flexibility in the whole use process improved, but also the whole is safer and more reliable in the use process.

Description

Technical Field

[0001] The utility model relates to the field of power cables, in particular to an ultra-high temperature-resistant, oil-resistant, cold-resistant and flexible fireproof power cable. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas.

[0003] In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the main lines of the power system, including power cables of various voltage levels from 1 - 500 kV and above, with various insulations.

[0004] However, the existing power cables have a relatively single applicable environment and are not convenient for use in a variety of different environments, thus having relatively large limitations.

[0005] Therefore, it is very necessary to invent an ultra-high temperature-resistant, oil-resistant, cold-resistant and flexible fireproof power cable. Content of the Utility Model

[0006] To solve the above technical problems, the technical solution adopted by the utility model for an ultra-high temperature-resistant, oil-resistant, cold-resistant and flexible fireproof power cable is as follows: An ultra-high temperature-resistant, oil-resistant, cold-resistant and flexible fireproof power cable includes a conductor, an insulating layer, a fire-resistant layer, a filling layer, a wrapping layer and a fireproof layer. Among them: The outer surface of the conductor is fixedly wrapped with an insulating layer, and a heat exchange structure is fixedly sleeved on the outer surface of the insulating layer. The outside of the heat exchange structure is fixedly wrapped with a fire-resistant layer; The outside of the fire-resistant layer is fixedly wrapped with a filling layer, and the outside of the filling layer is fixedly wrapped with a wrapping layer. The outside of the wrapping layer is fixedly wrapped with a fireproof layer; The outside of the fireproof layer is fixedly wrapped with a protective layer.

[0007] Preferably, the heat exchange structure includes a hollow ring sleeve and a hollow tube. Several hollow tubes are fixedly connected between two adjacent hollow ring sleeves, and the hollow tube is internally communicated with the hollow ring sleeve; The hollow tubes are arranged in a circular array with the hollow ring sleeve as the center.

[0008] Preferably, the protective layer includes an inner sheath layer and an outer sheath layer. The inner sheath layer is fixedly wrapped outside the fireproof layer, and the outer sheath layer is fixedly wrapped outside the inner sheath layer.

[0009] Preferably, several integral circular protrusions are evenly arranged on the outer surface of the outer sheath layer.

[0010] Compared with the prior art, the advantages of the utility model are as follows:

[0011] The overall setting of the present utility model can be used in a variety of different environmental states. In this way, not only the flexibility in the overall use process is improved, but also the overall becomes safer and more reliable during the use process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0013] Figure 2 is a schematic diagram of the heat exchange structure of the present utility model.

[0014] In the figure:

[0015] Conductor 1, insulating layer 2, hollow ring sleeve 3, hollow tube 4, refractory layer 5, filling layer 6, wrapping layer 7, fireproof layer 8, inner sheath layer 9, outer sheath layer 10, circular protrusion 11. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0017] In the description of the embodiments, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0018] The following further describes the present utility model with reference to the drawings:

[0019] Embodiment

[0020] Referring to Figure 1-2 , a super high temperature, oil and cold resistant flexible fireproof power cable, comprising a conductor 1, an insulating layer 2, a fireproof layer 5, a filling layer 6, a wrapping layer 7 and a fireproof layer 8, wherein: an insulating layer 2 is fixedly installed by wrapping the outer surface of the conductor 1. The insulating layer 2 is made of mineral insulating material, such as mica tape, which has excellent insulation, high temperature resistance and combustion resistance. A heat exchange structure is fixedly installed by sleeving the outer surface of the insulating layer 2, so that during the later use, a heating medium or a cooling medium can be introduced to better control the stability of the super high temperature, oil and cold resistant flexible fireproof power cable, and keep the super high temperature, oil and cold resistant flexible fireproof power cable within a safe and reliable operating temperature range. A fireproof layer 5 is fixedly installed by wrapping the outside of the heat exchange structure. The fireproof layer 5 is formed by winding calcined mica tape to provide additional fire protection and ensure the cable maintains a certain safety in a fire; a filling layer 6 is fixedly installed by wrapping the outside of the fireproof layer 5. The filling layer 6 is made of magnesium oxide and may include insulating paper, insulating tape, etc., which has a high ignition point and plays a flame retardant role. At the same time, it can increase the structural stability and mechanical strength of the cable. A wrapping layer 7 is fixedly installed by wrapping the outside of the filling layer 6. The wrapping layer 7 is a wrapping layer made of calcined mica tape, which provides additional protection and support for the internal cable core and enhances the fire resistance and mechanical strength of the cable. A fireproof layer 8 is fixedly installed by wrapping the outside of the wrapping layer 7. The fireproof layer 8 is made of polyetheretherketone resin material and serves as the external fireproof layer of the cable to further improve the fireproof ability of the cable; a protective layer is fixedly installed by wrapping the outside of the fireproof layer 8.

[0021] The heat exchange structure includes a hollow ring sleeve 3 and a hollow tube 4, and several hollow tubes 4 fixedly connect two adjacent hollow ring sleeves 3. Through the setting of the hollow ring sleeve 3, the hollow tube 4 can be supported to form a cylindrical shape between them for production and manufacturing. The hollow tube 4 is internally communicated with the hollow ring sleeve 3 to introduce a heating medium or a cooling medium later, ensuring that the super high temperature, oil and cold resistant flexible fireproof power cable is always within a safe operating temperature range; the hollow tubes 4 are arranged in an annular array centered on the hollow ring sleeve 3.

[0022] The protective layer includes an inner sheath layer 9 and an outer sheath layer 10. The inner sheath layer 9 is fixedly wrapped outside the fireproof layer 8. The inner sheath layer 9 is formed by longitudinally wrapping corrugated copper tape to provide additional mechanical protection and electrical shielding. The outer sheath layer 10 is fixedly wrapped outside the inner sheath layer 9. The sheath layer 10 is extruded and formed with polyetheretherketone resin material, which has excellent fireproof performance, as well as good oil and cold resistance.

[0023] A number of integral circular protrusions 11 are evenly distributed on the outer surface of the outer sheath layer 10. Through the arrangement of the circular protrusions 11, a supporting effect can be achieved. When multiple ultra-high temperature, oil-resistant, cold-resistant and flexible fire-proof power cables come into contact with each other, the contact area can be reduced, and a certain contact area can be generated between them to facilitate air circulation. At the same time, during the pulling process, large-area friction of the outer sheath layer 10 can be avoided.

[0024] Any technical solution using the technical solution of the present invention, or a technical solution designed by those skilled in the art inspired by the technical solution of the present invention and achieving the above technical effects shall fall within the protection scope of the present invention.

Claims

1. A super high temperature, oil and cold resistant flexible fireproof power cable, characterized in that: It includes a conductor (1), an insulating layer (2), a fire-resistant layer (5), a filling layer (6), a wrapping layer (7) and a fireproof layer (8), wherein: an insulating layer (2) is fixedly installed by wrapping on the outer surface of the conductor (1), and a heat exchange structure is fixedly installed by sleeving on the outer surface of the insulating layer (2), and a fire-resistant layer (5) is fixedly installed by wrapping on the outside of the heat exchange structure; a filling layer (6) is fixedly installed by wrapping on the outside of the fire-resistant layer (5), and a wrapping layer (7) is fixedly installed by wrapping on the outside of the filling layer (6), and a fireproof layer (8) is fixedly installed by wrapping on the outside of the wrapping layer (7); a protective layer is fixedly installed by wrapping on the outside of the fireproof layer (8).

2. The super high temperature resistant, oil resistant, cold resistant and flexible fireproof power cable according to claim 1, characterized in that: The heat exchange structure includes a hollow ring sleeve (3) and a hollow tube (4), and a plurality of hollow tubes (4) are fixedly connected between two adjacent hollow ring sleeves (3), and the hollow tube (4) is internally communicated with the hollow ring sleeve (3).

3. The super high temperature, oil and cold resistant flexible fireproof power cable according to claim 1, characterized in that: The protective layer includes an inner sheath layer (9) and an outer sheath layer (10), and the inner sheath layer (9) is fixedly wrapped on the outside of the fireproof layer (8), and the outer sheath layer (10) is fixedly wrapped on the outside of the inner sheath layer (9).

4. The super high temperature, oil and cold resistant flexible fireproof power cable according to claim 3, characterized in that: A plurality of integral circular protrusions (11) are uniformly arranged on the outer surface of the outer sheath layer (10).

Images