A high flame retardant fire resistant durable power cable

Abstract

This application discloses a high flame-retardant, fire-resistant, and durable power cable, comprising a protection unit, two cable bodies, and multiple support units. The two cable bodies are embedded in the protection unit from both sides, and the protection unit passes through each support unit, which includes an upper support and a lower support. The power cable of this application exhibits excellent UV resistance, high flame retardancy, and oil sludge resistance, thereby maintaining long-term stable operation of the cable. It also enables effective temperature measurement and flame-retardant alarm. The protection unit wraps and protects the two cable bodies, further protecting them, and ensures a tight fit between the protection unit and the cable bodies.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and more specifically, to a highly flame-retardant, fire-resistant, and durable power cable. Background Technology

[0002] Power cables, as an indispensable part of the power system, play a vital role in various fields. With the sustained and rapid growth of China's economy, the market demand for power cables is constantly increasing. Especially in the fields of new energy, smart grids, rail transportation, aerospace, and marine engineering, the application prospects of power cables are broad.

[0003] Existing power cables often have poor flame-retardant properties. In extreme situations like fires, fire can spread rapidly along the cables, expanding the fire's reach and increasing the difficulty of rescue efforts and property damage. In some industrial environments, cables may come into contact with contaminants such as oil and mud. If the outer layer of the power cable is not resistant to oil and mud, it can lead to a decline in the cable's insulation performance and even cause short circuits. Furthermore, in environments requiring long-term outdoor exposure, some power cables have poor UV resistance, causing the cable sheath to age, harden, and crack, thus affecting the cable's insulation performance and mechanical strength, and shortening its lifespan. Additionally, some power cables cannot be monitored for operating temperature in real time, making it difficult to detect potential faults such as overheating in a timely manner, increasing the risk of cable failure. In emergencies such as fires, the cables may also fail to send alarm signals in a timely manner, delaying rescue efforts. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the prior art and provide a highly flame-retardant, fire-resistant, and durable power cable.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cable, comprising a protection unit, two cable bodies, and multiple support units, wherein the two cable bodies are embedded in the protection unit from both sides, the protection unit passes through each support unit, and the support unit includes an upper support and a lower support.

[0006] Furthermore, the protection unit includes a heat-conducting base and a covering unit covering the heat-conducting base. The heat-conducting base includes a base body and two side heat-conducting bases fixedly connected to the base body. The top end of the base body has an upper groove and the bottom end has a lower groove. The covering unit includes a covering base, two upper covering units connected to the covering base, and two lower covering units connected to the covering base. The upper covering unit includes a first upper covering part, a second upper covering part, and a connecting covering part connecting the first upper covering part and the second upper covering part. The cross-sections of the first upper covering part, the second upper covering part, the connecting covering part, and the lower covering unit are all arc-shaped. Each cable body is located between an upper covering unit and a lower covering unit.

[0007] Furthermore, both sides of the sheathing seat have embedding grooves and insertion grooves communicating with the embedding grooves. The sheathing seat also includes a side covering portion that covers the side heat-conducting seat, the side covering portion extending into the embedding groove. The top of the sheathing seat has an upper mounting groove and an upper receiving groove communicating with the upper mounting groove. The bottom of the sheathing seat has a lower mounting groove and a lower receiving groove communicating with the lower mounting groove. The upper receiving groove extends into the upper recessed portion, and the lower receiving groove extends into the lower recessed portion. The cable body includes a protective sleeve and a heat conduction unit located within the protective sleeve. The protective sleeve includes a main body portion and a component connected to the main body portion. The unit comprises a side protrusion, a connecting portion connected to the main body, and an embedding portion connected to the connecting portion. The embedding portion has a side covering groove, and the embedding portion is embedded in the embedding groove. The side covering portion is embedded in the side covering groove. The heat conduction unit includes a heat conduction seat, two first metal plates, and two second metal plates. The two first metal plates contain a cable core unit. The side covering groove is located within the two second metal plates. The cable core unit includes, from the outside to the inside, an outer sheath, an armor layer, an inner sheath, and a wrapping layer. The wrapping layer contains multiple wire cores, and the wire cores include, from the outside to the inside, an insulation layer and a conductor.

[0008] Furthermore, the base, the side heat-conducting base, the upper groove, and the lower groove all extend along the length of the cable body.

[0009] Further, the upper support includes two clamping plates, a connecting plate connecting the two clamping plates, an upper mounting plate connected to the connecting plate and located in the upper mounting groove, and an upper insert plate connected to the upper mounting plate and located in the upper receiving groove. The clamping plate includes a first arc panel connected to the connecting plate, a second arc panel connected to the first arc panel, a third arc panel connected to the second arc panel, a fourth arc panel connected to the third arc panel, and a side plate connected to the fourth arc panel. The side plate has a limiting groove. The connecting cover is located in the second arc panel, and the side protrusion is located in the fourth arc panel. The lower support includes a frame, a lower mounting plate connected to the frame and located in the lower mounting groove, and a lower insert plate connected to the lower mounting plate and located in the lower receiving groove. The frame includes an insert plate and two L-shaped plates connected to the frame body. The frame body has limiting protrusions on both sides that mate with the limiting groove. The frame body also has two supporting grooves for supporting the lower cover unit. A temperature-measuring optical fiber is installed in the upper receiving groove. At least one of the multiple support units is a detection support unit. A temperature sensor is installed at the lower insert plate of the lower support of the detection support unit. A connecting pipe connects the two second arc panels of the detection support unit. The two second arc panels have connecting holes that communicate with the connecting pipe. At the corresponding protection unit position of the detection support unit, both connecting cover portions of the protection unit have through holes that communicate with the connecting holes. A smoke sensor extending into the connecting pipe is installed at the connecting pipe.

[0010] Furthermore, two temperature sensors are installed at the lower insertion plate of the lower support of the detection bracket unit.

[0011] This allows for better utilization of temperature sensors for temperature measurement.

[0012] Furthermore, the bottom end of the upper insert plate has an arc-shaped groove, and the top end of the lower insert plate has an arc-shaped groove.

[0013] This allows for better positioning of the temperature-sensing fiber between the upper insertion plate and the upper receiving slot.

[0014] Furthermore, the L-shaped plate has multiple strip-shaped through slots.

[0015] This facilitates the installation of the lower frame, which in turn facilitates the installation of the entire cable.

[0016] Furthermore, the heat conduction base, the two first metal plates, and the two second metal plates all extend along the length of the cable body; the cross-sections of the first metal plates and the second metal plates are both arc-shaped.

[0017] Thus, the first and second metal plates can provide better shielding and heat conduction for the cable core unit.

[0018] Furthermore, the first upper cover portion has an upper recess extending along the length direction of the cable body; the lower cover unit has a lower recess extending along the length direction of the cable body.

[0019] This allows the upper and lower cover units to open more easily when the cable body is installed at the protection unit, making it easier to install the cable body at the protection unit.

[0020] Furthermore, the armor layer is a steel wire armor layer, the conductor is a copper conductor, and the wrapping layer is a flame-retardant wrapping layer.

[0021] Furthermore, the covering unit is extruded from PVC material; the protective sleeve is made of polyethylene material; and the heat-conducting base and the heat-conducting unit are both made of copper-aluminum alloy.

[0022] Furthermore, multiple support units are distributed at equal intervals.

[0023] This provides better support for the protection unit and the cable body.

[0024] Furthermore, the detection support unit has multiple units, which are distributed at equal intervals.

[0025] This allows for the detection of the cable itself at every distance.

[0026] Beneficial effects:

[0027] 1. The power cable of this application has excellent UV resistance, high flame retardancy, and oil sludge resistance, thereby maintaining the long-term stable operation of the cable.

[0028] 2. In the power cable of this application, the protection unit wraps and protects the two cable bodies, thereby providing further protection for the cable bodies, and achieving a tight installation between the protection unit and the cable bodies.

[0029] 3. The power cable of this application can effectively measure temperature and provide flame retardant alarm, thereby notifying maintenance personnel to perform maintenance. Attached Figure Description

[0030] Figure 1 First-view schematic diagram of cable component separation;

[0031] Figure 2 This is a magnified view of region A;

[0032] Figure 3 This is a magnified view of region B.

[0033] Figure 4 This is a magnified view of region C;

[0034] Figure 5 A second-view diagram illustrating the separation of cable components;

[0035] Figure 6 This is a magnified view of region D;

[0036] Figure 7 This is a magnified view of region E.

[0037] Figure 8 This is a schematic diagram showing the installation of the protection unit and the two cable bodies.

[0038] Figure 9 This is a magnified view of region F;

[0039] Figure 10 This is a schematic diagram after the lower bracket has been installed;

[0040] Figure 11 This is a magnified view of region G;

[0041] Figure 12 This is a diagram showing the installation of the bracket;

[0042] Figure 13 This is a magnified view of region H.

[0043] Explanation of reference numerals in the attached drawings: Protective unit 1; Base 1.1; Upper recessed portion 1.1.1; Lower recessed portion 1.1.2; Side heat-conducting base 1.2; Covering base 1.3; Embedding groove 1.3.1; Insertion groove 1.3.2; Upper mounting groove 1.3.3; Upper receiving groove 1.3.4; Lower mounting groove 1.3.5; Lower receiving groove 1.3.6; First upper cover portion 1.4; Upper recessed portion 1.4.1; Second upper cover portion 1.5; Connecting cover portion 1.6; Through hole portion 1.6.1; Lower cover unit 1.7; Lower recessed portion 1.7.1; Side covering portion 1.8; Cable body 2; Main body portion 2.1; Side protrusion portion 2.2; Connecting portion 2.3; Embedded portion 2.4; Side covering portion groove 2.4.1; Heat conduction base 2. 5; First metal plate 2.6; Second metal plate 2.7; Outer sheath 2.8; Armor layer 2.9; Inner sheath 2.10; Wrapping layer 2.11; Insulation layer 2.12; Conductor 2.13; Upper bracket 3; First arc panel 3.1; Second arc panel 3.2; Connecting hole 3.2.1; Third arc panel 3.3; Fourth arc panel 3.4; Side plate 3.5; Limiting groove 3.5.1; Connecting plate 3.6; Upper mounting plate 3.7; Upper insertion plate 3.8; Lower bracket 4; Frame 4.1; Limiting protrusion 4.1.1; Support groove 4.1.2; Lower mounting plate 4.2; Lower insertion plate 4.3; L-shaped plate 4.4; Strip through groove 4.4.1; Temperature measuring fiber optic cable 5; Temperature sensor 6; Connecting pipe 7; Smoke sensor 8. Detailed Implementation

[0044] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] The present invention provides a high flame-retardant, fire-resistant and durable power cable as shown in the figure, including a protection unit 1, two cable bodies 2 and multiple support units. The two cable bodies 2 are embedded in the protection unit 1 from both sides. The protection unit 1 passes through each support unit. The support unit includes an upper support 3 and a lower support 4. The protection unit 1 includes a heat-conducting base and a covering unit covering the heat-conducting base. The heat-conducting base includes a base body 1.1 and two side heat-conducting bases 1.2 fixedly connected to the base body 1.1. The top end of the base body 1.1 has an upper groove portion 1.1.1 and the bottom end has a lower groove portion 1.1.2. The covering unit includes a covering base 1.3, two upper covering units connected to the covering base 1.3, and two lower covering units 1.7 connected to the covering base 1.3. The upper covering unit includes a first upper covering portion 1.4, a second upper covering portion 1.5, and a connecting covering portion 1.6 connecting the first upper covering portion 1.4 and the second upper covering portion 1.5. The cross-sections of the first upper covering portion 1.4, the second upper covering portion 1.5, the connecting covering portion 1.6, and the lower covering unit 1.7 are all arc-shaped. Each cable body 2 is located between an upper covering unit and a lower covering unit 1.7. The sheathing seat 1.3 has an embedding groove 1.3.1 on both sides and an insertion groove 1.3.2 communicating with the embedding groove 1.3.1. The sheathing seat 1.3 also includes a side covering part 1.8 covering the side heat-conducting seat 1.2. The side covering part 1.8 extends into the embedding groove 1.3.1. The top of the sheathing seat 1.3 has an upper mounting groove 1.3.3 and an upper receiving groove 1.3.4 communicating with the upper mounting groove 1.3.3. The bottom of the sheathing seat 1.3 has a lower mounting groove 1.3.5 and a lower receiving groove 1.3.6 communicating with the lower mounting groove 1.3.5. The upper receiving groove 1.3.4 extends into the upper recessed part 1.1.1, and the lower receiving groove 1.3.6 extends into the lower recessed part 1.1.2. The cable body 2 includes a protective sleeve and a heat conduction unit located inside the protective sleeve. The protective sleeve includes a main body part 2.1 and a main body part 2. The unit comprises a side protrusion 2.2 connected to the main body 2.1, a connecting part 2.3 connected to the main body 2.1, and an embedding part 2.4 connected to the connecting part 2.3. The embedding part 2.4 has a side covering groove 2.4.1, which is embedded in the embedding groove 1.3.1. The side covering part 1.8 is embedded in the side covering groove 2.4.1. The heat conduction unit includes a heat conduction seat 2.5, two first metal plates 2.6, and two second metal plates 2.7. The two first metal plates 2.6 contain a cable core unit. The side covering groove 2.4.1 is located within the two second metal plates 2.7. The cable core unit includes, from the outside to the inside, an outer sheath 2.8, an armor layer 2.9, an inner sheath 2.10, and a wrapping layer 2.11. The wrapping layer 2.11 contains multiple wire cores, which include, from the outside to the inside, an insulation layer 2.12 and a conductor 2.13.

[0046] The upper bracket 3 includes two clamping plates, a connecting plate 3.6 connecting the two clamping plates, an upper mounting plate 3.7 connected to the connecting plate 3.6 and located in the upper mounting groove 1.3.3, and an upper insert plate 3.8 connected to the upper mounting plate 3.7 and located in the upper receiving groove 1.3.4. The clamping plates include a first arc panel 3.1 connected to the connecting plate 3.6, a second arc panel 3.2 connected to the first arc panel 3.1, a third arc panel 3.3 connected to the second arc panel 3.2, and a third arc panel 3.8 connected to the connecting plate 3.6. The third arc panel 3.3 is connected to a fourth arc panel 3.4 and a side plate 3.5 connected to the fourth arc panel 3.4. The side plate 3.5 has a limiting groove 3.5.1. The connecting cover 1.6 is located inside the second arc panel 3.2, and the side protrusion 2.2 is located inside the fourth arc panel 3.4. The lower bracket 4 includes a frame 4.1, a lower mounting plate 4.2 connected to the frame 4.1 and located inside the lower mounting groove 1.3.5, and a side plate 3.5 connected to the lower mounting plate 4.2 and located inside the lower mounting groove 1.3.5. The lower receiving groove 1.3.6 contains a lower insert plate 4.3 and two L-shaped plates 4.4 connected to the frame 4.1. The frame 4.1 has limiting protrusions 4.1.1 on both sides that cooperate with the limiting groove 3.5.1. The frame 4.1 has two supporting grooves 4.1.2 for supporting the lower covering unit 1.7. A temperature measuring fiber 5 is installed in the upper receiving groove 1.3.4. At least one of the multiple support units is a detection support unit. A temperature sensor 6 is installed at the lower insert plate 4.3 of the lower support 4 of the detection support unit. A connecting pipe 7 is connected between the two second arc panels 3.2 of the detection support unit. The two second arc panels 3.2 have connecting holes 3.2.1 that communicate with the connecting pipe 7. At the position of the protection unit 1 corresponding to the detection support unit, the two connecting covering parts 1.6 of the protection unit 1 each have through holes 1.6.1 that communicate with the connecting holes. A smoke sensor 8 is installed in the connecting pipe 7.

[0047] Two temperature sensors 6 are installed at the lower insertion plate 4.3 of the lower bracket 4 of the detection bracket unit. The L-shaped plate 4.4 has multiple strip-shaped through slots 4.4.1. The heat conduction seat 2.5, the two first metal plates 2.6, and the two second metal plates 2.7 all extend along the length of the cable body 2; the cross-sections of the first metal plates 2.6 and the second metal plates 2.7 are both arc-shaped. The first upper cover 1.4 has an upper recess 1.4.1 extending along the length of the cable body 2; the lower cover unit 1.7 has a lower recess 1.7.1 extending along the length of the cable body 2. The armor layer 2.9 is a steel wire armor layer, the conductor 2.13 is a copper conductor, and the wrapping layer 2.11 is a flame-retardant wrapping layer. The covering unit is extruded from PVC material; the protective sleeve is made of polyethylene material; the heat conduction seat and the heat conduction unit are both made of copper-aluminum alloy.

[0048] Working Principle: The cable of this application is installed in groups of two cable bodies. During installation, the two cable bodies can be embedded into the protection unit from both sides. The protection unit is supported by a lower bracket, and the upper and lower brackets can be installed together, thus assembling the cable body, protection unit, and multiple support units. The cable body itself has excellent UV resistance, flame retardancy, and oil and sludge resistance. The protection unit can wrap and protect the two cable bodies, providing further protection. The protection unit and the two cable bodies can be embedded together, resulting in a tighter installation. The heat conduction unit, with two first metal plates wrapping the cable core unit, increases the shielding performance of the cable body and conducts heat from the cable core unit to the two second metal plates and then to the side heat conduction seat. This heat is detected by the temperature-measuring fiber optic cable and a temperature sensor at the detection support unit, allowing for the monitoring of the operating temperature of the two cable bodies. Furthermore, the upper and lower brackets of the bracket unit can be fixedly installed by the matching of the limiting groove and the limiting protrusion, which further fixes the protection unit and the two cable bodies. The strip groove of the L-shaped plate at the lower bracket can facilitate the installation of the lower bracket. In addition, a smoke sensor is installed at the upper bracket of the detection bracket unit. When the cable body burns and produces smoke, the smoke can be transmitted through the space inside the connecting cover to the connecting pipe and be detected by the smoke sensor.

[0049] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A high flame retardant fire resistant durable power cable characterized by, It includes a protection unit, two cable bodies, and multiple support units. The two cable bodies are embedded in the protection unit from both sides. The protection unit passes through each support unit. The support unit includes an upper support and a lower support. The protection unit includes a heat-conducting base and a covering unit covering the heat-conducting base. The heat-conducting base includes a base body and two side heat-conducting bases fixedly connected to the base body. The top end of the base body has an upper groove and the bottom end has a lower groove. The covering unit includes a covering base, two upper covering units connected to the covering base, and two lower covering units connected to the covering base. The upper covering unit includes a first upper covering part, a second upper covering part, and a connecting covering part connecting the first upper covering part and the second upper covering part. The cross-sections of the first upper covering part, the second upper covering part, the connecting covering part, and the lower covering unit are all arc-shaped. Each cable body is located between an upper covering unit and a lower covering unit.

2. A high flame retardant fire resistant durable power cable according to claim 1, characterized in that, The sheathing seat has embedding grooves on both sides and insertion grooves communicating with the embedding grooves. The sheathing seat also includes a side covering portion that covers the side heat-conducting seat, the side covering portion extending into the embedding groove. The top of the sheathing seat has an upper mounting groove and an upper receiving groove communicating with the upper mounting groove. The bottom of the sheathing seat has a lower mounting groove and a lower receiving groove communicating with the lower mounting groove. The upper receiving groove extends into the upper recessed portion, and the lower receiving groove extends into the lower recessed portion. The cable body includes a protective sleeve and a heat conduction unit located within the protective sleeve. The protective sleeve includes a main body and a side protrusion connected to the main body. The unit comprises an outlet, a connecting part connected to the main body, and an insert part connected to the connecting part. The insert part has a side-covering groove, and the insert part is embedded in the insert groove. The side-covering part is embedded in the side-covering groove. The heat conduction unit includes a heat conduction seat, two first metal plates, and two second metal plates. The two first metal plates contain a cable core unit. The side-covering groove is located within the two second metal plates. The cable core unit includes, from the outside to the inside, an outer sheath, an armor layer, an inner sheath, and a wrapping layer. The wrapping layer contains multiple wire cores, and the wire cores include, from the outside to the inside, an insulation layer and a conductor.

3. A high flame retardant fire resistant durable power cable according to claim 2, characterized in that, The upper support includes two clamping plates, a connecting plate connecting the two clamping plates, an upper mounting plate connected to the connecting plate and located in an upper mounting groove, and an upper insert plate connected to the upper mounting plate and located in an upper receiving groove. The clamping plate includes a first arc-shaped panel connected to the connecting plate, a second arc-shaped panel connected to the first arc-shaped panel, a third arc-shaped panel connected to the second arc-shaped panel, a fourth arc-shaped panel connected to the third arc-shaped panel, and a side plate connected to the fourth arc-shaped panel. The side plate has a limiting groove. The connecting cover portion is located within the second arc-shaped panel, and the side protrusion portion is located within the fourth arc-shaped panel. The lower support includes a frame body, a lower mounting plate connected to the frame body and located in a lower mounting groove, and a lower insert plate connected to the lower mounting plate and located in a lower receiving groove. The frame includes two L-shaped plates connected to the frame body. The frame body has limiting protrusions on both sides that mate with the limiting grooves. The frame body also has two supporting grooves for supporting the lower cover unit. A temperature-measuring optical fiber is installed in the upper receiving groove. At least one of the multiple support units is a detection support unit. A temperature sensor is installed at the lower insert plate of the lower support of the detection support unit. A connecting pipe connects the two second arc panels of the detection support unit. The two second arc panels have connecting holes that communicate with the connecting pipe. At the corresponding protection unit position of the detection support unit, both connecting cover portions of the protection unit have through holes that communicate with the connecting holes. A smoke sensor extending into the connecting pipe is installed at the connecting pipe.

4. A high flame retardant fire resistant durable power cable according to claim 3, characterized in that, Two temperature sensors are installed at the lower insertion plate of the lower bracket of the detection bracket unit.

5. A high flame retardant fire resistant durable power cable according to claim 3, characterized in that, The L-shaped plate has multiple strip-shaped through slots.

6. A high flame retardant fire resistant durable power cable according to claim 3, characterized in that, The heat conduction base, the two first metal plates, and the two second metal plates all extend along the length of the cable body; the cross-sections of the first metal plates and the second metal plates are both arc-shaped.

7. A high flame retardant fire resistant durable power cable according to claim 3, characterized in that, The first upper cover has an upper recess extending along the length of the cable body; the lower cover has a lower recess extending along the length of the cable body.

8. A high flame retardant fire resistant durable power cable according to claim 3, characterized in that, The armor layer is a steel wire armor layer, the conductor is a copper conductor, and the wrapping layer is a flame-retardant wrapping layer.

9. A high flame retardant fire resistant durable power cable according to claim 3, characterized in that, The covering unit is extruded from PVC material; the protective sleeve is made of polyethylene material; and the heat-conducting base and heat-conducting unit are both made of copper-aluminum alloy.

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