Flexible high-temperature-resistant and fireproof heating cable
By using materials such as high-performance carbon fiber conductors, fire-resistant glass wire rope braids, ceramic fireproof mud, and corrugated stainless steel belts in heating cables, the deficiencies of existing cables in high temperature resistance, fire protection, and flexibility are solved, and flexible high-temperature resistance is achieved. And the design of fireproof heating cable is suitable for underground and harsh environments.
Patent Information
- Application Number
- CN202420159146.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-01-23
AI Technical Summary
Existing heating cables have shortcomings in high temperature resistance, fire resistance, flexibility and buried adaptability, especially in cold and large temperature differences, which are difficult to meet the needs of chemical process pipelines and greenhouse heating systems.
A flexible high-temperature-resistant and fire-resistant heating cable is designed, using materials such as high-performance carbon fiber conductors, fire-resistant glass wire rope braids, ceramic fireproof mud, and corrugated stainless steel belts to enhance the cable's high-temperature resistance, fire resistance, and compression resistance.
It achieves the flexibility, high temperature resistance, fire protection and underground adaptability of the cable, can remain stable in high temperature environments above 1000°C, has excellent fire protection performance, extends the service life and reduces costs.
Smart Images
Figure CN222381820U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, in particular to a flexible high-temperature-resistant and fire-proof heating cable. Background Art
[0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
[0003] At present, most of the heating cables on the market are ordinary heating cables with simple structure, short service life, low temperature resistance, poor fire resistance and low electric heating efficiency. The MI heating cables with long service life and high temperature resistance are rigid cables with large bending radius. They require special equipment for production and have high production cost. The carbon fiber heating cables with high electric heating efficiency have poor fire resistance and are not suitable for underground burial. In the northern region of my country, especially in the plateau area, the climate is cold all year round and the temperature difference between day and night is large. The heating systems of chemical process pipelines and greenhouse plants also require heating cables that are resistant to bending, high strength, high temperature resistance, fire resistance, low cost, long service life and suitable for underground burial. Utility Model Content
[0004] In view of the deficiencies in the prior art, the present invention provides a flexible high temperature resistant and fireproof heating cable, which solves the problems raised in the background technology.
[0005] To achieve the above object, the utility model provides the following technical solutions: a flexible high temperature resistant and fireproof heating cable, comprising a first protective layer, a flexible mechanism is arranged on the inner side of the first protective layer, and a high strength wear-resistant layer is arranged on the inner side of the flexible mechanism;
[0006] A high temperature resistant mechanism is arranged inside the high strength wear resistant layer, and a fireproof heating mechanism is arranged inside the high temperature resistant mechanism.
[0007] Preferably, the flexible mechanism comprises a plurality of soft copper wires arranged on the inner side of the first protective layer, and a flexible fiber reinforcement layer is arranged on the inner side of the plurality of soft copper wires.
[0008] Preferably, the high temperature resistant structure includes several high temperature resistant layers arranged on the inner side of the high strength wear-resistant layer, a high temperature resistant buffer layer is arranged on the inner side of each high temperature resistant layer, a core heat insulation layer is arranged on the inner side of the high temperature resistant buffer layer, an insulating resisting layer is arranged on the inner side of the core heat insulation layer, a waterproof layer is arranged on the inner side of the insulating resisting layer, and an optical fiber is arranged on the inner side of the insulating resisting layer.
[0009] Preferably, the fireproof heating mechanism includes a metal sheath arranged on the inner side of several high-temperature resistant layers, the inner side of the metal sheath is filled with fireproof mud, the inner side of the fireproof mud is provided with a wrapping layer, the inner side of the wrapping layer is provided with several insulating layers, and the inner side of each insulating layer is provided with a carbon fiber conductor.
[0010] Preferably, a plastic-coated aluminum strip is provided between the high temperature resistant layer and the high temperature resistant buffer layer.
[0011] Preferably, the surface of the waterproof layer is coated with a coating film, and the wire core insulation layer adopts a PE isolation sleeve with a thickness of 1 mm.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] The utility model provides a flexible high temperature resistant and fireproof heating cable:
[0014] In view of the problems existing in the above-mentioned prior art, the purpose of this design is to provide a heating cable which needs to be resistant to bending, high strength, high temperature resistance, fire resistance and suitable for underground burial. In order to achieve the above-mentioned purpose, this design adopts the addition of high-performance carbon fiber to the carbon fiber conductor to enhance the conductor strength and serve as a heating element. The insulation layer selects a glass wire rope braid with excellent fire resistance as the insulation layer of the cable, and the glass wire rope is used as the filling material to improve the high temperature resistance and fire resistance of the cable. The ceramic fire-resistant and fire-resistant mineral flexible oxygen-insulating fire-proof mud is used as the isolation layer to improve the high temperature resistance and fire resistance of the cable. Corrugated stainless steel belt is used as the metal sheath as a reinforcement layer to improve the compressive strength and waterproof performance of the cable. It can be used in harsh environments, suitable for underground burial, and can withstand high temperatures above 1000°C. At the same time, it has excellent fire resistance, which can ensure that the line continues to work in high temperature environments or fires, and will not spread fire, thereby reducing the construction cost and increasing the service life of the heating cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the high-strength wear-resistant layer structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the high temperature resistant buffer layer structure of the utility model;
[0018] Figure 4 This is a schematic diagram of the wire core insulation layer structure of the utility model;
[0019] Figure 5 This is a schematic diagram of the insulation layer structure of the utility model.
[0020] In the figure: 1. first protective layer; 2. flexible mechanism; 201. soft copper wire; 202. flexible fiber reinforcement layer; 3. high-strength wear-resistant layer; 4. high-temperature resistant mechanism; 401. high-temperature resistant layer; 402. high-temperature resistant buffer layer; 403. core insulation layer; 404. insulating barrier layer; 405. waterproof layer; 406. optical fiber; 5. fireproof heating mechanism; 501. metal sheath; 502. fireproof mud; 503. winding layer; 504. insulating layer; 505. carbon fiber conductor. DETAILED DESCRIPTION
[0021] 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.
[0022] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] like Figure 1-Figure 5As shown, the utility model proposes a flexible high temperature resistant and fireproof heating cable, comprising a first protective layer 1, a flexible mechanism 2 is arranged inside the first protective layer 1, and a high strength wear-resistant layer 3 is arranged inside the flexible mechanism 2;
[0026] A high temperature resistant mechanism 4 is arranged inside the high strength wear resistant layer 3 , and a fireproof heating mechanism 5 is arranged inside the high temperature resistant mechanism 4 .
[0027] During specific use, the fireproof heating cable is protected by the first protective layer 1 to prevent the fireproof heating cable from being worn and damaged, and the optical fiber core inside the fireproof heating cable is protected from being worn and damaged by the high-strength wear-resistant layer 3.
[0028] The flexible mechanism 2 includes a plurality of soft copper wires 201 disposed on the inner side of the first protective layer 1 , and a flexible fiber reinforcement layer 202 is disposed on the inner side of the plurality of soft copper wires 201 .
[0029] During specific use, the plurality of soft copper wires 201 are provided to improve the flexibility of the cable, thereby preventing breakage during the process of pulling or installing the cable. The flexible fiber reinforcement layer 202 is provided to enhance the toughness of the cable, thereby improving the flexibility of the cable.
[0030] The high temperature resistant mechanism 4 includes a plurality of high temperature resistant layers 401 arranged on the inner side of the high strength wear resistant layer 3, a high temperature resistant buffer layer 402 is arranged on the inner side of each high temperature resistant layer 401, a core heat insulation layer 403 is arranged on the inner side of the high temperature resistant buffer layer 402, an insulating resisting layer 404 is arranged on the inner side of the core heat insulation layer 403, a waterproof layer 405 is arranged on the inner side of the insulating resisting layer 404, and an optical fiber 406 is arranged on the inner side of the insulating resisting layer 404.
[0031] During specific use, the high temperature resistant layer 401 is provided to protect the electric core inside the cable from high temperature, the high temperature resistant buffer layer 402 is provided to alleviate the conduction of heat inside the cable caused by the external high temperature, the core insulation layer 403 is provided to insulate the core, the insulating barrier layer 404 is provided to block and insulate heat, and the waterproof layer 405 is provided to prevent moisture from penetrating into the interior of the cable, thereby preventing damage to the optical fiber 406.
[0032] The fireproof heating mechanism 5 includes a metal sheath 501 arranged on the inner side of several high temperature resistant layers 401, the inner side of the metal sheath 501 is filled with fireproof mud 502, the inner side of the fireproof mud 502 is provided with a wrapping layer 503, the inner side of the wrapping layer 503 is provided with several insulating layers 504, and the inner side of each insulating layer 504 is provided with a carbon fiber conductor 505.
[0033] During specific use, the metal sheath 501 is provided to improve the compressive strength, corrosion resistance and high temperature resistance of the cable, and can effectively protect the cable to operate normally for a long time even in a humid, high temperature and cold harsh environment. The fireproof mud 502 is provided to block the influence of high temperature on the internal communication line of the cable. The insulation layer 504 is woven with high temperature resistant, high strength, ultra-fine and flexible glass fibers. After being dried in an oven, a layer of tight nitric acid fibers is formed and adhered to the braided layer. The coating layer has a thickness of 0.20 to 0.25 mm, which improves the oil resistance, ozone resistance and moisture resistance of the wire core. The cable is wound and protected by the sheath 503. The carbon fiber conductor 505 adopts GB / T The sixth type of soft copper conductor required by 3956-2008 is twisted with a multiple twist structure, and the bundle pitch is 10 to 12 times. A certain number of carbon fibers are added when the conductor is twisted, and the number of carbon fibers is 15% of the number of single wires of the conductor. The twisted conductor should not have missing, loose or broken strands. The conductor is twisted evenly and tightly, and the surface should be smooth. The surface of the conductor is smooth and free of defects such as burrs and oil stains.
[0034] A plastic-coated aluminum strip is provided between the high temperature resistant layer 401 and the high temperature resistant buffer layer 402 .
[0035] During specific use, the plastic-coated aluminum strip is provided to better isolate the high temperature resistant layer 401 and the high temperature resistant buffer layer 402 , thereby avoiding friction between the high temperature resistant layer 401 and the high temperature resistant buffer layer 402 .
[0036] The surface of the waterproof layer 405 is coated with a coating film, and the wire core insulation layer 403 adopts a PE isolation sleeve with a thickness of 1 mm.
[0037] During specific use, the coating film is provided to improve the waterproof property of the cable through the waterproof layer 405, and the thickness of the isolation sleeve is set to 1 mm to ensure that heat will not be conducted into the cable.
[0038] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.
[0039] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. A flexible high temperature resistant and fireproof heating cable, comprising a first protective layer (1), characterized in that: A flexible mechanism (2) is provided on the inner side of the first protective layer (1), and a high-strength wear-resistant layer (3) is provided on the inner side of the flexible mechanism (2); A high temperature resistant mechanism (4) is arranged on the inner side of the high strength wear resistant layer (3), and a fireproof heating mechanism (5) is arranged on the inner side of the high temperature resistant mechanism (4); The fireproof heating mechanism (5) comprises a metal sheath (501) arranged on the inner side of a plurality of high temperature resistant layers (401), the inner side of the metal sheath (501) is filled with fireproof mud (502), the inner side of the fireproof mud (502) is provided with a wrapping layer (503), the inner side of the wrapping layer (503) is provided with a plurality of insulating layers (504), and the inner side of each insulating layer (504) is provided with a carbon fiber conductor (505).
2. A flexible high temperature resistant and fireproof heating cable according to claim 1, characterized in that: The flexible mechanism (2) comprises a plurality of soft copper wires (201) arranged on the inner side of the first protective layer (1), and a flexible fiber reinforcement layer (202) is arranged on the inner side of the plurality of soft copper wires (201).
3. A flexible high temperature resistant and fireproof heating cable according to claim 1, characterized in that: The high temperature resistant structure (4) comprises a plurality of high temperature resistant layers (401) arranged on the inner side of the high strength wear resistant layer (3), a high temperature resistant buffer layer (402) being arranged on the inner side of each high temperature resistant layer (401), a wire core heat insulation layer (403) being arranged on the inner side of the high temperature resistant buffer layer (402), an insulating conductive layer (404) being arranged on the inner side of the wire core heat insulation layer (403), a waterproof layer (405) being arranged on the inner side of the insulating conductive layer (404), and an optical fiber (406) being arranged on the inner side of the insulating conductive layer (404).
4. A flexible high temperature resistant and fireproof heating cable according to claim 3, characterized in that: A plastic-coated aluminum strip is provided between the high temperature resistant layer (401) and the high temperature resistant buffer layer (402).
5. A flexible high temperature resistant and fireproof heating cable according to claim 3, characterized in that: The surface of the waterproof layer (405) is coated with a coating film, and the wire core heat insulation layer (403) adopts a PE isolation sleeve with a thickness of 1 mm.