High-temperature-resistant tensile fireproof cable

Abstract

The invention discloses a high-temperature-resistant tensile fire-resistant cable, which belongs to the technical field of cables and is provided with copper wires for power transmission. Comprising a sandwich member which is nested between the copper wires, the outer surface of each copper wire is connected with a buffer member, the middle section of the inner surface of each buffer member is nested with a tensile wire, the outer surface of each buffer member is provided with an insulating layer, and the insulating layer is provided with a fireproof tensile mechanism. According to the high-temperature-resistant tensile fire-resistant cable, the core clamping piece, the buffer piece and the tensile wire which are convenient to be arranged inside are matched to control the internal assembly stability and tensile performance of the cable body, and the tensile layer and the filling groove are matched to form tensile performance and are matched with the filling material to form fireproof use; and through the cooperation of the high-temperature-resistant bottom layer, the high-temperature-resistant top layer and the release piece, heat dissipation and fire resistance are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a high temperature resistant and tensile resistant fire resistant cable. Background Art

[0002] Cable is an electrical device that can be used to transmit electrical energy, signals and data. It is formed by a single or multiple mutually insulated conductors, and an insulating layer and a protective layer. It is classified and thicker according to different uses. During use, the cables used are prone to breakage, affecting safety of use.

[0003] In order to overcome the above defects, the prior art (Chinese patent application with application number CN202210272008.8 and application date 2022-03-18) is a cable with high temperature resistance and fire resistance, which not only ensures the fire resistance of the cable but also ensures the structural strength of the cable body. An insulating sleeve is arranged on the outside of the inner core to ensure that several groups of inner cores do not affect each other. The inner core is composed of several groups of core wires, and the core wires include a main core and a secondary core wire. The main core is located at the center and the secondary core wire is evenly wrapped around the surface of the main core to form a spiral structure. This design The structure of the inner core is ensured, and its tensile strength is improved. A holding groove is arranged in the epoxy resin encapsulation interlayer of the cable body, and the holding groove is distributed in a circumference. The inside of the holding groove is filled with borax, and when the cable breaks and shorts, it can quickly cover its surface, thereby avoiding sparks. There is also a prior art (application number CN201820544840.8, Chinese patent application application date 2018-04-17) A new type of structure controllable high temperature resistant cable, by arranging an insulating protective sleeve outside the conductive wire core, and the insulating protective sleeve is close to the heat resistant layer The insulating protective sleeve is a polytetrafluoroethylene tape, and the fire-resistant layer is made of flame-retardant silicone rubber, which not only enhances the heat resistance of the cable, but also ensures that the cores are blocked from each other without affecting each other, providing good insulation ability, and a fastening layer is arranged between the metal protective layer and the fire-resistant layer, and a polyethylene outer sheath is arranged outside the metal protective layer, which meets the compression, corrosion and tensile resistance of the cable and prolongs the service life of the cable; and the prior art (Chinese patent application with application number CN202321602818.1 and application date 2023-06-21) Fire-resistant, tensile-resistant, torsion-resistant and flame-retardant rubber sheathed cable, a polyester wire is placed in the center of the cable conductor, twisted together with multiple other fine copper wires, and a polyester wire double-twisted conductor is placed in the center of the double-twisted cable, thereby increasing the tensile and torsion resistance. The conductor is wrapped with mica tape, and the mica tape wrapped with the conductor has excellent high temperature resistance and combustion resistance, so it can continuously supply power in high temperature and combustion environments; although the existing technology can withstand high temperature and tensile performance, the tensile performance is insufficient during work. Under long-term high temperature, it is easy to cause the tensile performance to decrease, and it is not convenient to use the cable to form automatic heat dissipation.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original cables. Summary of the invention

[0005] The purpose of the present invention is to provide a high temperature resistant and tensile fire resistant cable to solve the problems raised in the above background technology that the tensile performance is insufficient during operation, the tensile performance is easily reduced under high temperature for a long time, and it is inconvenient to use the cable for automatic heat dissipation.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-temperature resistant, tensile-resistant and fire-resistant cable, provided with copper conductors for power transmission; comprising: a sandwich member, nested between the copper conductors, and a buffer member is connected to the outer surface of the copper conductor, and a tensile wire is nested in the middle section of the inner surface of the buffer member, and an insulating layer is installed on the outer surface of the buffer member, and the insulating layer is provided with a fireproof and tensile-resistant mechanism.

[0007] Preferably, the sandwich component and the copper wire form a nested structure, and the copper wire forms a built-in structure through the buffer component and the insulating layer, and the buffer component and the tensile wire form a through structure.

[0008] Through the above structure, it is convenient to effectively form a nested assembly during use, thereby controlling the stability between the copper conductor and the insulation layer and improving the tensile strength of the cable body.

[0009] Preferably, the fireproof tensile-resistant mechanism comprises an insulating layer with a tensile-resistant layer wrapped around its outer surface, a filling groove is provided on its outer surface, and a high-temperature-resistant bottom layer is bonded and connected to its outer surface, and a high-temperature-resistant tensile-resistant mechanism is provided on the high-temperature-resistant bottom layer.

[0010] Through the above structure, the tensile layer can be stably attached and connected during use, thereby improving the stability of the cable body.

[0011] Preferably, the insulating layer and the tensile layer form a wrapped structure, and the outer surface of the tensile layer is a grid-like structure, and a fireproof material is arranged in the filling groove. At the same time, the inner surface of the filling groove is a diamond-shaped structure, and the tensile layer and the high temperature resistant bottom layer form a fitting structure.

[0012] Through the above structure, when in use, the tension-resistant layer and the filling groove are coordinated to form tension-resistant and fire-proof properties.

[0013] Preferably, the high temperature resistant tensile structure includes a high temperature resistant bottom layer having a support ring installed on its outer surface, and a through hole one is opened on the inner surface of the support ring, and a support sheet is installed on the outer surface of the high temperature resistant bottom layer, and a through hole two is opened on the inner surface of the support sheet, and a high temperature resistant top layer is installed on the outer surfaces of the support ring and the support sheet, and the high temperature resistant top layer is provided with a fireproof structure.

[0014] Through the above structure, the support ring and the support sheet can be stably assembled during use, thereby improving the stability and bending resistance between the high-temperature resistant bottom layer and the high-temperature resistant top layer, thereby improving the tensile resistance and preventing tearing and breakage. Through the through holes one and two opened therein, heat dissipation treatment is formed, and heat release is formed in cooperation with the subsequent release parts.

[0015] Preferably, the high temperature resistant bottom layer is embedded in the outer surface of the support ring and the support sheet, and the support ring is arranged at equal distances axially with respect to the high temperature resistant bottom layer, and the support sheet is arranged at equal angles with respect to the outer surface of the high temperature resistant bottom layer, and a cross structure is formed between the support ring and the support sheet, while the support ring, the support sheet and the high temperature resistant top layer form an integrated structure, and the outer surface of the support sheet is wavy.

[0016] Through the above structure, when in use, the stability of the high temperature resistant top layer and the high temperature resistant bottom layer can be effectively improved through the support ring and the support sheet, thereby forming a heat dissipation coordination and improving the stability of use.

[0017] Preferably, the fireproof mechanism includes a nested ring installed on the outer surface of the high-temperature resistant top layer, and the outer surface of the nested ring is snap-connected with the outer layer of the cable, and the inner surface of the outer layer of the cable is provided with a through hole, and the inner surface of the through hole is nested with a fire-resistant strip, and the inner surface of the fire-resistant strip is filled with refractory material.

[0018] Through the above structure, it is convenient to control the bonding stability between the outer layer of the cable and the high-temperature resistant top layer through the nested rings during use, prevent slippage, and avoid separation between the inside and the outside.

[0019] Preferably, the high temperature resistant top layer forms a nested bonding structure with the cable outer layer through nested rings, and the cable outer layer forms a built-in structure with the refractory strips through through holes, while the refractory strips and the refractory material form a filling structure.

[0020] The above structure improves the stability of the cable outer layer assembly during use, and the fireproof performance is improved by arranging fire-resistant strips and fire-resistant materials.

[0021] Preferably, a release piece is nested and connected to the inner surface of the outer layer of the cable, and the release piece is nested in the inner surface of the high-temperature resistant top layer, and a pressure detector is installed on the inner surface of the release piece, and a release cover is rotatably connected to the side of the inner surface of the release piece, and a fixing plate is installed on the inner side of the inner surface of the release piece, and a tension spring is elastically connected between the fixing plate and the release cover.

[0022] Through the above structure, the release member and the release cover can be effectively assembled and matched during use, and the accidental opening can be monitored by the pressure detector.

[0023] Preferably, the release member forms a nested structure with the cable outer layer and the high temperature resistant top layer, and the release member and the release cover form a rotary sealing structure, and the release cover forms an elastic stretching structure through a tension spring and the release member.

[0024] Through the above structure, when in use, when the temperature and pressure between the high-temperature resistant top layer and the high-temperature resistant bottom layer are high, heat release can be effectively formed, and heat dissipation treatment can be formed by cooperating with the support ring and the support sheet to absorb heat.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. The high temperature resistant and tensile fire resistant cable is provided with sandwich parts, buffer parts and tensile wires for easy internal installation, which controls the internal assembly stability and tensile performance of the cable body. The tensile layer and the filling groove are matched to form tensile resistance and fire protection with the filling material. The high temperature resistant bottom layer and the high temperature resistant top layer are matched with the release part to form heat dissipation and fire resistance.

[0026] 2. The high temperature resistant and tensile fire resistant cable is provided with a fireproof and tensile resistance mechanism, which can improve the tensile resistance by forming a covering wrap through the grid-like tensile resistance layer, and the filling groove opened in the tensile resistance layer can be filled with fireproof and fireproof materials on its inner surface to improve the safety of the cable body.

[0027] 3. The high-temperature resistant and tensile-resistant fire-resistant cable is provided with a high-temperature resistant and tensile-resistant mechanism. The high-temperature resistant bottom layer bonded by the tensile layer effectively cooperates with the installed support ring and support sheet, and is combined with the high-temperature resistant top layer to form an effective support and heat absorption. In combination with the through hole one and through hole two respectively opened, the absorbed heat can be evenly laid for heat dissipation, and cooperate with the later release parts to improve the heat resistance stability; further, through the nested ring installed on the high-temperature resistant top layer, the outer layer of the cable is nested and bonded to improve the stability of the installation of the outer layer of the cable, and cooperate with the built-in refractory strips and refractory materials in the outer layer of the cable to increase the fireproof and fire-resistant performance of the outer layer of the cable in the case of external fire and heating; further, through the release parts nested between the high-temperature resistant top layer and the outer layer of the cable, it effectively cooperates with the release cover and the tension spring to form a hot-pressure release, and resets when the temperature is low, and cooperates with the pressure detector to avoid damage caused by unrelated personnel, and can monitor where the cable heat dissipation capacity is insufficient, which is convenient for later fixed-point maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of the copper conductor of the present invention; Figure 2 It is a partial cross-sectional schematic diagram of a semi-cross-sectional three-dimensional structure of a copper conductor of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the insulating layer of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the tensile layer of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the high temperature resistant bottom layer of the present invention; Figure 6 It is a schematic diagram of a partial cross-sectional three-dimensional structure of the outer layer of the cable of the present invention; Figure 7 It is a schematic diagram of a partially cutaway three-dimensional structure of a release member of the present invention; Figure 8 For the present invention Figure 7 A in the middle is an enlarged schematic diagram of the three-dimensional structure.

[0029] In the figure: 1. Copper conductor; 2. Sandwich member; 3. Buffer member; 4. Tensile wire; 5. Insulating layer; 6. Tensile layer; 7. Filling groove; 8. High temperature resistant bottom layer; 9. Support ring; 10. Through hole one; 11. Support sheet; 12. Through hole two; 13. High temperature resistant top layer; 14. Nesting ring; 15. Cable outer layer; 16. Through hole; 17. Refractory strip; 18. Refractory material; 19. Release member; 20. Pressure detector; 21. Release cover; 22. Fixing plate; 23. Tension spring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 8 The present invention provides a technical solution: a high temperature resistant and tensile resistant fire resistant cable, provided with a copper conductor 1 for power transmission.

[0032] Embodiment 1: Figure 1-Figure 4The technical scheme shown in the figure, the present invention provides the following technical scheme: a high temperature resistant and tensile fire resistant cable, disclosed: comprising: a sandwich member 2, nested between copper conductors 1, and the outer surface of the copper conductor 1 is connected to a buffer member 3, and the middle section of the inner surface of the buffer member 3 is nested with a tensile wire 4, and the outer surface of the buffer member 3 is installed with an insulating layer 5, and the insulating layer 5 is provided with a fireproof tensile mechanism; the sandwich member 2 and the copper conductor 1 form a nested structure, and the copper conductor 1 forms a built-in structure with the insulating layer 5 through the buffer member 3, and the buffer member 3 and the tensile wire 4 are connected to the outer surface of the copper conductor 1. It constitutes a through-structure; the fireproof tensile-resistant mechanism includes an insulating layer 5 whose outer surface is wrapped with a tensile layer 6, and a filling groove 7 is opened on the outer surface of the tensile layer 6, and the outer surface of the tensile layer 6 is bonded with a high-temperature resistant bottom layer 8, and the high-temperature resistant bottom layer 8 is provided with a high-temperature resistant tensile mechanism; the insulating layer 5 and the tensile layer 6 constitute a winding and wrapping structure, and the outer surface of the tensile layer 6 is in a grid-like structure, and a fireproof material is arranged in the filling groove 7, and the inner surface of the filling groove 7 is in a diamond-shaped structure, and the tensile layer 6 and the high-temperature resistant bottom layer 8 constitute a bonding structure.

[0033] During production, sandwich components 2 are arranged between copper conductors 1 to form a fitting connection while controlling the stability of copper conductors 1, and an insulating layer 5 is assembled in cooperation with a buffer component 3 nested outside the copper conductor 1, and a tensile wire 4 is nested and assembled in the buffer component 3 to improve the overall stability of the cable body and the tensile performance of the cable body, and a grid-shaped tensile layer 6 is attached to the outer surface of the insulating layer 5 to improve the tensile performance of the cable body, and a filling groove 7 is opened on the tensile layer 6, and a fireproof material is filled on the inner surface of the filling groove 7 to further improve the fireproof performance of the cable body.

[0034] Embodiment 2: Figure 1 , Figure 2 , Figure 5 and Figure 6The technical solution shown, on the basis of embodiment 1, also discloses the high temperature resistance performance of the high temperature resistant bottom layer 8, and its specific contents are as follows: the high temperature resistant tensile mechanism includes a support ring 9 installed on the outer surface of the high temperature resistant bottom layer 8, and the inner surface of the support ring 9 is provided with a through hole 10, and the outer surface of the high temperature resistant bottom layer 8 is installed with a support sheet 11, and the inner surface of the support sheet 11 is provided with a through hole 2 12, and the outer surfaces of the support ring 9 and the support sheet 11 are installed with a high temperature resistant top layer 13, and the high temperature resistant top layer 13 is provided with a fireproof mechanism; the high temperature resistant bottom layer 8 is embedded with the outer surfaces of the support ring 9 and the support sheet 11, and the support ring 9 is arranged at equal distances with respect to the axial direction of the high temperature resistant bottom layer 8, and the support sheet 11 is arranged at equal angles with respect to the outer surface of the high temperature resistant bottom layer 8, and the support ring 9 and the support sheet 11 form a cross structure, and the support ring 9, the support sheet 11 and the high-temperature resistant top layer 13 form an integrated structure, and the outer surface of the support sheet 11 is in a wavy structure; the fireproof mechanism includes a nested ring 14 installed on the outer surface of the high-temperature resistant top layer 13, and the outer surface of the nested ring 14 is snap-connected with the cable outer layer 15, and the inner surface of the cable outer layer 15 is provided with a through hole 16, and the inner surface of the through hole 16 is nested with a fire-resistant strip 17, and the inner surface of the fire-resistant strip 17 is filled with a fire-resistant material 18; the high-temperature resistant top layer 13 forms a nested bonding structure with the cable outer layer 15 through the nested ring 14, and the cable outer layer 15 forms a built-in structure with the fire-resistant strip 17 through the through hole 16, and the fire-resistant strip 17 and the refractory material 18 form a filling structure.

[0035] When producing the cable, a high temperature resistant bottom layer 8 is adhered to the outer surface of the tensile layer 6, and the support ring 9 and the support sheet 11 assembled with the high temperature resistant bottom layer 8 are assembled at equal distances and at equal angles respectively, and the support ring 9 and the support sheet 11 are formed into a grid shape and wrapped around the outer surface of the tensile layer 6 with the high temperature resistant bottom layer 8. While the support ring 9 and the support sheet 11 provide supporting force, and cooperate with the bent structure of the support sheet 11 to improve the axial tensile resistance of the cable body, and through the through hole 10 opened in the support ring 9 and the through hole 2 12 opened in the support sheet 11, while the support ring 9 and the support sheet 11 absorb heat, the heat is transferred to between the high temperature resistant bottom layer 8 and the high temperature resistant top layer 13, and through the through hole 10 and the through hole 2 12 and the high temperature resistant top layer 13, the heat in the high temperature area is transferred to the low temperature area to form a temperature exchange, and the release piece 19 assembled later on the high temperature resistant top layer 13 is used to release heat, thereby improving the discharge of internal and external heat and improving the overall high temperature resistance.

[0036] Embodiment 3: Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8The technical solution shown, on the basis of Example 2, also discloses the fire resistance of the cable outer layer 15, and its specific contents are as follows: a release piece 19 is nested and connected to the inner surface of the cable outer layer 15, and the release piece 19 is nested in the inner surface of the high-temperature resistant top layer 13, and a pressure detector 20 is installed on the inner surface of the release piece 19, and a release cover 21 is rotatably connected to the side of the inner surface of the release piece 19, and a fixing plate 22 is installed on the inner side of the inner surface of the release piece 19, and a tension spring 23 is elastically connected between the fixing plate 22 and the release cover 21; the release piece 19, the cable outer layer 15 and the high-temperature resistant top layer 13 form a nested structure, and the release piece 19 and the release cover 21 form a rotating sealing structure, and the release cover 21 forms an elastic tension structure with the release piece 19 through the tension spring 23.

[0037] During production, the outer surface of the high-temperature resistant top layer 13 is covered with a cable outer layer 15, and the nested ring 14 installed on the high-temperature resistant top layer 13 effectively improves the stability of the assembly of the cable outer layer 15, and the fire-resistant strip 17 assembled in the through hole 16 opened in the cable outer layer 15, and the fire-resistant material 18 filled in the fire-resistant strip 17, improve the fire resistance of the entire cable body, thereby controlling the safety of the cable body. The release piece 19 is nested and assembled by the high-temperature resistant top layer 13 and the cable outer layer 15, and ultrasonic welding is formed to avoid water seepage. When the hot pressing between the high-temperature resistant bottom layer 8 and the high-temperature resistant top layer 13 is formed, the pressure extrusion release cover 21 is rotated on the release piece 19, and the tension spring 23 between the fixed plate 22 installed on the release piece 19 and the release cover 21 can be pulled and reset after the hot pressing is released. Through the monitoring of the pressure detector 20, when an unrelated person opens the release cover 21, the monitoring pressure release change is different from the conventional pressure release change, and a reminder can be formed, thereby monitoring the cable usage and improving the safety of use.

[0038] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant and tensile resistant fire resistant cable, provided with a copper conductor (1) for power transmission; It is characterized in that include: The sandwich component (2) is nested between the copper wires (1), and the outer surface of the copper wire (1) is connected to a buffer component (3), and a tensile wire (4) is nested in the middle section of the inner surface of the buffer component (3), and an insulating layer (5) is installed on the outer surface of the buffer component (3), and the insulating layer (5) is provided with a fireproof tensile structure.

2. A high temperature resistant and tensile fire resistant cable according to claim 1, characterized in that: The sandwich component (2) and the copper conductor (1) form a nested structure, and the copper conductor (1) forms a built-in structure through the buffer component (3) and the insulating layer (5), and the buffer component (3) and the tensile wire (4) form a through structure.

3. A high temperature resistant and tensile fire resistant cable according to claim 1, characterized in that: The fireproof tensile-resistant structure comprises an insulating layer (5) having an outer surface wound with a tensile-resistant layer (6), a filling groove (7) being provided on the outer surface of the tensile-resistant layer (6), and a high-temperature-resistant bottom layer (8) being bonded and connected to the outer surface of the tensile-resistant layer (6), and the high-temperature-resistant bottom layer (8) being provided with a high-temperature-resistant tensile-resistant structure.

4. A high temperature resistant and tensile fire resistant cable according to claim 3, characterized in that: The insulating layer (5) and the tensile layer (6) form a wrapped structure, the outer surface of the tensile layer (6) is in a grid-like structure, a fireproof material is provided in the filling groove (7), the inner surface of the filling groove (7) is in a diamond-shaped structure, and the tensile layer (6) and the high-temperature resistant bottom layer (8) form a fitting structure.

5. A high temperature resistant and tensile fire resistant cable according to claim 3, characterized in that: The high temperature resistant tensile structure comprises a high temperature resistant bottom layer (8) having a support ring (9) mounted on its outer surface, and a first through hole (10) being provided on the inner surface of the support ring (9), and a support sheet (11) being mounted on its outer surface, and a second through hole (12) being provided on the inner surface of the support sheet (11), and a high temperature resistant top layer (13) being mounted on the outer surfaces of the support ring (9) and the support sheet (11), and the high temperature resistant top layer (13) being provided with a fireproof structure.

6. A high temperature resistant and tensile fire resistant cable according to claim 5, characterized in that: The high temperature resistant bottom layer (8) is embedded with the outer surface of the support ring (9) and the support sheet (11), and the support ring (9) is arranged at equal distances in the axial direction of the high temperature resistant bottom layer (8), and the support sheet (11) is arranged at equal angles in relation to the outer surface of the high temperature resistant bottom layer (8), and a cross structure is formed between the support ring (9) and the support sheet (11), while the support ring (9), the support sheet (11) and the high temperature resistant top layer (13) form an integrated structure, and the outer surface of the support sheet (11) is in the shape of a wavy structure.

7. A high temperature resistant and tensile fire resistant cable according to claim 6, characterized in that: The fireproof mechanism comprises a nested ring (14) installed on the outer surface of a high temperature resistant top layer (13), and the outer surface of the nested ring (14) is snap-connected with a cable outer layer (15), and the inner surface of the cable outer layer (15) is provided with a through hole (16), and the inner surface of the through hole (16) is nested with a fireproof strip (17), and the inner surface of the fireproof strip (17) is filled with a fireproof material (18).

8. A high temperature resistant and tensile fire resistant cable according to claim 7, characterized in that: The high temperature resistant top layer (13) forms a nested bonding structure with the cable outer layer (15) through a nested ring (14), and the cable outer layer (15) forms a built-in structure with the fire-resistant strip (17) through a through hole (16), while the fire-resistant strip (17) and the fire-resistant material (18) form a filling structure.

9. A high temperature resistant and tensile fire resistant cable according to claim 8, characterized in that: A release piece (19) is nested and connected to the inner surface of the cable outer layer (15), and the release piece (19) is nested in the inner surface of the high temperature resistant top layer (13), and a pressure detector (20) is installed on the inner surface of the release piece (19), and a release cover (21) is rotatably connected to the side of the inner surface of the release piece (19), and a fixing plate (22) is installed on the inner side of the inner surface of the release piece (19), and a tension spring (23) is elastically connected between the fixing plate (22) and the release cover (21).

10. A high temperature resistant and tensile fire resistant cable according to claim 9, characterized in that: The release piece (19) forms a nested structure with the cable outer layer (15) and the high temperature resistant top layer (13), and the release piece (19) and the release cover (21) form a rotary sealing structure, and the release cover (21) forms an elastic tensile structure through the tensile spring (23) and the release piece (19).

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