High-temperature-resistant fireproof cable
By using tinned copper conductors, fluoroplastic inner insulation layer and polyimide outer insulation layer in high-temperature fireproof cables, and combining fire-proof sleeves with glass fiber silicone wire and carbon fiber wire braided, the problem of short service life of high-temperature fireproof cables is solved, and higher high-temperature and fire-proof performance is achieved, extending the service life of the cable and improving safety.
Patent Information
- Application Number
- CN202421555017.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-02
AI Technical Summary
The existing high-temperature fire-resistant cables have a short service life in high-temperature environments, and the conductors are prone to oxidation at high temperatures, losing the safety of re-use.
The conductor made of tinned copper, the inner insulation layer made of fluoroplastic material and the outer insulation layer made of polyimide material, combined with a fire-proof sleeve braided by glass fiber silicone wire and carbon fiber wire, the high temperature resistance and fire resistance of the cable are improved through the combination of these materials.
It extends the service life of high-temperature fire-resistant cables, improves the safety and insulation performance of cables in high-temperature environments, and avoids further losses caused by combustion of cables.
Smart Images
Figure CN222867296U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power cables, in particular to a high temperature resistant and fireproof cable. Background Art
[0002] Ordinary cables are prone to insulation aging and scorching at high temperatures, making the cables damaged and unusable, while high-temperature resistant and fireproof cables can work normally and stably at rated high temperatures, without affecting signal or power transmission performance, and can also ensure that the cables have a long service life. However, the service life of existing high-temperature resistant and fireproof cables is short. After a short period of high temperature, the conductor is severely oxidized and loses the safety of reuse. Utility Model Content
[0003] In order to increase the service life of high temperature resistant and fireproof cables, the present application provides a high temperature resistant and fireproof cable.
[0004] The present application provides a high temperature resistant and fireproof cable, which adopts the following technical solution:
[0005] A high temperature resistant fireproof cable comprises a cable body and a fireproof sleeve. The cable body is provided with a conductor, an inner insulating layer and an outer insulating layer in sequence from the inside to the outside. The outer wall of the conductor is in contact with the inner wall of the inner insulating layer, and the outer wall of the inner insulating layer is in contact with the inner wall of the outer insulating layer. The fireproof sleeve is sleeved on the cable body.
[0006] By adopting the above technical scheme, the conductor is the conductive part of the high temperature resistant and fireproof cable. The inner insulation layer cooperates with the outer insulation layer to prevent current leakage, and the fireproof layer is used to ensure the safety of the cable body in a high temperature environment. If an open flame appears in the use environment, it is not easy to cause further losses due to the burning of the cable, which improves the safety and service life of the cable during use to a certain extent.
[0007] Preferably, the conductor is made of tinned copper, and the inner insulating layer is made of fluoroplastic.
[0008] By adopting the above technical solution, the conductor material made of tinned copper is relatively soft and has good conductivity. Compared with bare copper wire, it also has better corrosion resistance and oxidation resistance, and makes the conductor less likely to turn black and brittle, effectively extending the service life of the high temperature resistant and fireproof cable.
[0009] Preferably, the outer insulating layer is made of polyimide material.
[0010] By adopting the above technical solution, polyimide is a high-performance polymer with excellent high temperature resistance. It can be used in high temperature environment and has good wear resistance. It is not easy to wear and break due to friction with the fireproof sleeve, which improves the service life of the cable body. In addition, polyimide also has self-extinguishing properties, low smoke rate and radiation resistance, which improves the quality of the high temperature resistant and fireproof cable.
[0011] Preferably, the fireproof sleeve is woven by glass fiber silicone wire and carbon fiber wire.
[0012] By adopting the above technical scheme, both the glass fiber silicone wire and the carbon fiber wire have good high temperature resistance and insulation performance, and are further less likely to cause current leakage or dielectric breakdown, thereby improving the insulation performance of the high temperature resistant and fireproof cable, thereby improving the safety of using the high temperature resistant and fireproof cable.
[0013] Preferably, the fireproof sleeve is provided with a plurality of heat dissipation through holes, and the plurality of heat dissipation through holes are arranged in a circular array with the axis of the fireproof sleeve as the center.
[0014] By adopting the above technical solution and setting the heat dissipation through holes, the heat generated by the cable body during use can be dissipated, making the cable less prone to internal combustion, thereby extending the service life of the high temperature resistant and fireproof cable.
[0015] Preferably, a limiting belt is provided on the fireproof sleeve, and the limiting belt is used to tighten the fireproof sleeve so that the inner wall of the fireproof sleeve corresponding to the limiting belt is pressed tightly against the cable body.
[0016] By adopting the above technical solution, the limiting belt is used to tighten the fireproof sleeve. Through the setting of the fireproof sleeve, the inner wall corresponding to the fireproof sleeve and the limiting belt is pressed against the cable body, so that the fireproof sleeve is not easily displaced relative to the cable body, thereby improving the stability of the fireproof sleeve after installation.
[0017] Preferably, the limiting belt is located in the middle of the heat dissipation through hole.
[0018] By adopting the above technical solution, while improving the installation stability of the fireproof cover by the limiting belt, it can provide certain protection for the position where the heat dissipation holes are opened in the fireproof cover, making the fireproof cover not easy to break, thereby improving the strength of the fireproof cover.
[0019] In summary, the present application includes at least one of the following beneficial technical effects:
[0020] 1. The conductor is the conductive part of the high temperature resistant and fireproof cable. The inner insulation layer cooperates with the outer insulation layer to prevent current leakage, and the fireproof layer is used to ensure the safety of the cable body in a high temperature environment. If there is an open flame in the use environment, it is not easy to cause further losses due to the burning of the cable, which improves the safety and service life of the cable during use to a certain extent;
[0021] 2. Both the glass fiber silicone wire and the carbon fiber wire have good high temperature resistance and insulation performance, which is further less likely to cause current leakage or dielectric breakdown, thereby improving the insulation performance of the high temperature resistant and fireproof cable, thereby improving the safety of using the high temperature resistant and fireproof cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a cross-sectional view of an embodiment of the present application.
[0023] Figure 2 It is a side view in the embodiment of the present application.
[0024] Explanation of the reference numerals: 1. cable body; 11. conductor; 12. inner insulation layer; 13. outer insulation layer; 2. fireproof sleeve; 21. glass fiber silicone wire; 22. carbon fiber wire; 23. heat dissipation point; 231. heat dissipation through hole; 24. limiting belt. DETAILED DESCRIPTION
[0025] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0026] The following is combined with Figure 1-2 The utility model is described in further detail.
[0027] The present application embodiment discloses a high temperature resistant fireproof cable, referring to Figure 1 and Figure 2 , including a cable body 1 and a fireproof sleeve 2. The cable body 1 is provided with a conductor 11, an inner insulating layer 12 and an outer insulating layer 13 from the inside to the outside. The outer wall of the conductor 11 is in contact with the inner wall of the inner insulating layer 12, and the outer wall of the inner insulating layer 12 is in contact with the inner wall of the outer insulating layer 13. The fireproof sleeve 2 is sleeved on the cable body 1. The conductor 11 is the conductive part of the high-temperature resistant and fireproof cable. The inner insulating layer 12 cooperates with the outer insulating layer 13 to prevent current leakage. The fireproof layer is used to ensure the safety of the cable body 1 in a high-temperature environment. If an open flame appears in the use environment, it is not easy to cause further losses due to the burning of the cable.
[0028] Reference Figure 1 and Figure 2The conductor 11 is made of tinned copper. The conductor 11 made of tinned copper is relatively soft and has good electrical conductivity. Compared with bare copper wire, it also has better corrosion resistance and oxidation resistance. It makes the conductor 11 less likely to become black and brittle, effectively extending the service life of the high-temperature resistant and fireproof cable. The inner insulating layer 12 is made of fluoroplastic material. Fluoroplastic has excellent insulation properties and can be used in special environments such as high voltage and high frequency. It is not easy to cause current leakage or dielectric breakdown. In addition, fluoroplastic also has excellent corrosion resistance, further extending the service life of the high-temperature resistant and fireproof cable.
[0029] Reference Figure 1 and Figure 2 The outer insulating layer 13 is made of polyimide material. Polyimide is a high-performance polymer with excellent high temperature resistance. It can be used in high temperature environments and has good wear resistance. It is not easy to wear and break due to friction with the fireproof sleeve 2, which improves the service life of the cable body 1. In addition, polyimide also has self-extinguishing properties, low smoke rate and radiation resistance, which improves the quality of the high temperature resistant and fireproof cable.
[0030] Reference Figure 1 and Figure 2 The fireproof sleeve 2 is woven by glass fiber silicone wire 21 and carbon fiber wire 22. Both the glass fiber silicone wire 21 and the carbon fiber wire 22 have good high temperature resistance and insulation performance, and are further less likely to cause current leakage or dielectric breakdown, thereby improving the insulation performance of the high temperature resistant fireproof cable and thus improving the safety of using the high temperature resistant fireproof cable.
[0031] Reference Figure 2 , a plurality of heat dissipation points 23 are arranged on the fireproof cover 2, and the distances between two adjacent heat dissipation points 23 are the same. Each heat dissipation point 23 includes a plurality of heat dissipation through holes 231 penetrating the fireproof cover 2. In the embodiment of the present application, one heat dissipation point 23 is provided with six heat dissipation through holes 231. The heat dissipation through holes 231 are opened along the length direction of the fireproof cover 2. The six heat dissipation through holes 231 are arranged in a circular array with the axis of the fireproof cover 2 as the center. Through the arrangement of the heat dissipation points 23, on the one hand, the length of the high temperature resistant and fireproof cable can be quickly judged, and on the other hand, the heat generated by the cable body 1 during use can be dissipated, thereby extending the service life of the high temperature resistant and fireproof cable.
[0032] Reference Figure 2 The fireproof sleeve 2 is provided with a limiting belt 24, and the limiting belt 24 is located in the middle of the heat dissipation through hole 231. The limiting belt 24 is used to tighten the fireproof sleeve 2, so that the inner wall corresponding to the fireproof sleeve 2 and the limiting belt 24 is pressed against the cable body 1, so that the fireproof sleeve 2 is not easy to move relative to the cable body 1, and the stability of the fireproof sleeve 2 after installation is improved. The limiting belt 24 can be made of waste formed by cutting the heat dissipation through hole 231 of the fireproof sleeve 2, saving production costs.
[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A high temperature resistant and fireproof cable, characterized in that: The invention comprises a cable body (1) and a fireproof sleeve (2); the cable body (1) is provided with a conductor (11), an inner insulating layer (12) and an outer insulating layer (13) in sequence from the inside to the outside; the outer wall of the conductor (11) is in contact with the inner wall of the inner insulating layer (12); the outer wall of the inner insulating layer (12) is in contact with the inner wall of the outer insulating layer (13); and the fireproof sleeve (2) is sleeved on the cable body (1).
2. The high temperature resistant and fireproof cable according to claim 1, characterized in that: The conductor (11) is made of tinned copper, and the inner insulating layer (12) is made of fluoroplastic.
3. The high temperature resistant and fireproof cable according to claim 1, characterized in that: The outer insulating layer (13) is made of polyimide material.
4. The high temperature resistant and fireproof cable according to claim 1, characterized in that: The fireproof sleeve (2) is woven by glass fiber silicone wires (21) and carbon fiber wires (22).
5. The high temperature resistant and fireproof cable according to claim 4, characterized in that: The fireproof sleeve (2) is provided with a plurality of heat dissipation through holes (231), and the plurality of heat dissipation through holes (231) are arranged in a circular array with the axis of the fireproof sleeve (2) as the center.
6. The high temperature resistant and fireproof cable according to claim 5, characterized in that: The fireproof sleeve (2) is provided with a limiting belt (24), and the limiting belt (24) is used to tighten the fireproof sleeve (2) so that the inner wall corresponding to the fireproof sleeve (2) and the limiting belt (24) is tightly pressed against the cable body (1).
7. The high temperature resistant and fireproof cable according to claim 6, characterized in that: The limiting belt is located in the middle of the heat dissipation through hole (231).