Flame-retardant power cable for ship

Abstract

The utility model discloses a flame-retardant power cable for ships, which relates to the technical field of ship cables, and comprises a trunk cable and a branch cable, the joint of the trunk cable and the branch cable is provided with a convex joint, the outer side of a concave joint is fixedly provided with insertion blocks which are arranged at equal intervals, the inner sides of the insertion blocks are provided with clamping grooves, and the outer side of the convex joint is provided with a rotating groove. An inner sleeve is arranged on the outer side of the convex connector, and clamping blocks arranged at equal intervals are fixedly installed on the inner side of the inner sleeve. According to the flame-retardant power cable for the ship, provided by the utility model, the insertion block on the concave joint is inserted into the groove in the convex joint, and the inner sleeve on the outer side of the convex joint is rotated, so that the clamping block is clamped with the clamping groove in the insertion block in the rotating groove; therefore, the trunk cable of the concave joint and the branch cable of the convex joint are connected, stable connection is ensured, the thermal shrinkable sleeve is not required to be damaged, and the cable can be disassembled and maintained, so that the damage to the cable is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ship cables, in particular to a flame-retardant power cable for ships. Background Art

[0002] Flame-retardant power cables are designed to slow down the spread of fire and protect the power supply system when a fire occurs. Flame-retardant power cables are an important part of ensuring that buildings and industrial facilities remain safe in fires. Selecting suitable flame-retardant cables and installing and maintaining them in accordance with standards can greatly improve fire safety.

[0003] Some electrically driven ships need to use professional ship cables for power transmission. The existing Chinese patent with authorization announcement number CN220509736U discloses a high temperature resistant and low flame retardant ship-specific cable. It improves the strength of the first and second support layers through the first and second bearing parts. At the same time, the first and second bearing parts are both arc-shaped and absorb part of the extrusion force through deformation.

[0004] Since the situation is changeable during the voyage of ships, cables are usually inspected and maintained regularly. Cable docking is the process of connecting two cables together. On ships, the cable joints are usually placed in heat shrink tubing, and the tubing is connected by shrinking the tubing by heating. However, when a fault occurs at the cable interface and needs to be repaired, the hot-melt tubing needs to be destroyed before the cable can be disconnected, which can easily cause damage to the cable. Utility Model Content

[0005] In view of the above-mentioned problem that when a fault occurs at the cable interface and needs to be repaired, the hot-melt sleeve needs to be destroyed to disconnect the cable, which easily causes damage to the cable, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a flame-retardant power cable for ship use, the purpose of which is to complete the clamping connection through the clamping block on the inner sleeve and the plug-in block on the female joint, so as to connect the main cable of the female joint with the branch cable on the male joint, and then the heat shrink sleeve does not need to be destroyed and can be disassembled for maintenance, avoiding damage to the cable.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a ship flame-retardant power cable, comprising a trunk cable and a branch cable, a male connector is provided at the connection between the trunk cable and the branch cable, the male connector is provided at one end of the branch cable close to the trunk cable, a female connector is provided at one end of the trunk cable close to the male connector, and the female connector and the male connector are adapted to each other;

[0008] The outer side of the female connector is fixedly mounted with equally spaced plug blocks, and the plug blocks are distributed in a circular array around the female connector, and the inner sides of the plug blocks are all provided with card slots;

[0009] A rotation groove is provided on the outer side of the male joint, and an inner sleeve is provided on the outer side of the male joint. The inner sleeve is movably connected to the outer side of the male joint through the rotation groove and is located at the bottom of the female joint. Equidistantly arranged card blocks are fixedly installed on the inner side of the inner sleeve. The card blocks and the card grooves are adapted to each other and correspond to the plug blocks one by one.

[0010] As a preferred solution of the ship-based flame-retardant power cable described in the utility model, wherein: the inner sleeve is provided with a locking thread at one end close to the male joint, an outer sleeve is provided on the outer side of the male joint, the branch cable passes through the entire outer sleeve, the inner sleeve is threadably connected to the outer sleeve through a locking thread, and the outer sleeve is installed on the outside of the branch cable through a limiting ring.

[0011] As a preferred solution of the ship-based flame-retardant power cable of the utility model, the outer sides of the trunk cable and the branch cable are both provided with an outer sheath, the inner side of the outer sheath is provided with a tensile fiber layer, the outer sheath is made of fluoroplastic material, and the tensile fiber layer is woven from aramid yarn.

[0012] As a preferred solution of the ship-based flame-retardant power cable of the utility model, a wrapping shielding layer is arranged on the inner side of the tensile-resistant fiber layer, the tensile-resistant fiber layer is located between the outer sheath and the wrapping shielding layer, and the wrapping shielding layer is located in a copper wire woven mesh structure.

[0013] As a preferred solution of the flame-retardant shipboard power cable of the utility model, a flame-retardant layer is arranged on the inner side of the wrapped shielding layer, and the flame-retardant layer is a silicone rubber filler.

[0014] As a preferred solution of the shipboard flame-retardant power cable of the utility model, a reinforcing core is arranged on the inner side of the flame-retardant layer, and the reinforcing core is located at the center of the flame-retardant layer.

[0015] As a preferred solution of the ship-use flame-retardant power cable of the utility model, communication line cores and power line cores are distributed in a ring array on the outside of the reinforcing core, and the communication line cores and power line cores are both wrapped by a flame-retardant layer.

[0016] Beneficial effects of the utility model:

[0017] 1. The plug-in block on the female connector is plugged into the groove in the male connector, and the inner sleeve on the outer side of the male connector is rotated to make the card block plug into the card groove in the rotating groove, thereby connecting the trunk cable of the female connector with the branch cable on the male connector. While ensuring a stable connection, the heat shrink sleeve can be disassembled for maintenance without destroying it, avoiding damage to the cable.

[0018] 2. The locking thread on the inner sleeve is connected to the outer sleeve thread on the male joint which is non-rotatable through the limit ring, so that the inner sleeve cannot rotate on the outside of the male joint, thereby preventing the connection between the trunk cable and the branch cable from loosening and falling off.

[0019] 3. The outer sheath made of fluoroplastic provides good insulation and waterproofness for the cable, and the cable's compression and wear resistance, anti-interference ability and flame retardant insulation are improved through the aramid silk woven tensile fiber layer, copper wire woven mesh wrapped shielding layer and silicone rubber filled flame retardant layer, so that the cable is not easily damaged and adapts to the special use environment on ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of the flame-retardant power cable for ships.

[0022] Figure 2 The utility model is a schematic diagram of the explosion decomposition structure of the flame-retardant shipboard power cable.

[0023] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of the flame-retardant power cable for ships.

[0024] Figure 4 The utility model is a flame-retardant power cable for ships Figure 3 Schematic diagram of the enlarged structure of part A.

[0025] Figure 5 The utility model is a schematic diagram of the inner sleeve and the related structure of the clamping block of the ship's flame-retardant power cable.

[0026] Figure 6 It is a schematic cross-sectional layered diagram of the utility model of the flame-retardant shipboard power cable.

[0027] Description of reference numerals:

[0028] 1. Trunk cable; 2. Branch cable; 3. Male connector; 4. Female connector; 5. Plug-in block; 6. Slot; 7. Turning slot; 8. Inner sleeve; 9. Block; 10. Locking thread; 11. Outer sleeve; 12. Limiting ring; 13. Outer sheath; 14. Tensile fiber layer; 15. Wrapped shielding layer; 16. Flame retardant layer; 17. Reinforced core; 18. Communication line core; 19. Power line core. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1

[0031] Reference Figure 1-6 , which is the first embodiment of the utility model, provides a shipboard flame-retardant power cable, the shipboard flame-retardant power cable comprises a trunk cable 1 and a branch cable 2, a male connector 3 is arranged at the connection between the trunk cable 1 and the branch cable 2, the male connector 3 is arranged at one end of the branch cable 2 close to the trunk cable 1, a female connector 4 is arranged at one end of the trunk cable 1 close to the male connector 3, the female connector 4 and the male connector 3 are adapted to each other, the outer side of the female connector 4 is fixedly installed with equidistantly arranged plug-in blocks 5, and the plug-in blocks 5 are distributed in a ring array around the female connector 4, the inner sides of the plug-in blocks 5 are provided with card grooves 6, the outer side of the male connector 3 is provided with a rotation groove 7, the outer side of the male connector 3 is provided with an inner sleeve 8, the inner sleeve 8 is movably connected to the outer side of the male connector 3 through the rotation groove 7 and is located at the bottom of the female connector 4, the inner side of the inner sleeve 8 is fixedly installed with The card blocks 9 are arranged equidistantly, and the card blocks 9 and the card slots 6 are adapted to each other and correspond to the plug blocks 5 one by one. The male connector 3 is sleeved on one end of the branch cable 2 through a heat shrink process, and the female connector 4 is also sleeved on one end of the trunk cable 1 through a heat shrink process. When the female connector 4 and the male connector 3 are plugged in, the trunk cable 1 and the branch cable 2 are connected to realize power signal transmission. The female connector 4 is plugged into the groove in the male connector 3 through the plug block 5 and cannot rotate. The inner sleeve 8 can rotate on the outside of the male connector 3 under the restriction of the rotating groove 7, so that the card block 9 is connected with the card slot 6 on the plug block 5 in the rotating groove 7, thereby connecting the trunk cable 1 of the female connector 4 with the branch cable 2 on the male connector 3. While ensuring the stability of the connection, it can be disassembled and repaired without destroying the heat shrink sleeve to avoid damage to the cable.

[0032] A locking thread 10 is provided at one end of the inner sleeve 8 close to the male joint 3, and an outer sleeve 11 is provided on the outer side of the male joint 3. The branch cable 2 passes through the outer sleeve 11 as a whole. The inner sleeve 8 is threadedly connected with the outer sleeve 11 through the locking thread 10. The outer sleeve 11 is installed on the outer side of the branch cable 2 through a limiting ring 12. The outer sleeve 11 can be threadedly connected with the inner sleeve 8 after the clamping block 9 in the inner sleeve 8 and the plug block 5 in the female joint 4 are clamped together, and can move along the groove in the male joint 3 through the limiting ring 12 and the outer sleeve 11 cannot rotate, thereby fixing the inner sleeve 8 on the outer side of the male joint 3 and preventing it from rotating, so that the connection between the trunk cable 1 and the branch cable 2 is not easy to loosen and fall off.

[0033] An outer sheath 13 is provided on the outside of the trunk cable 1 and the branch cable 2, and a tensile fiber layer 14 is provided on the inner side of the outer sheath 13. The outer sheath 13 is made of fluoroplastic material, and the tensile fiber layer 14 is made of aramid yarn. The outer sheath 13 can provide good insulation and waterproof properties for the cable to adapt to the special use environment on the ship. The tensile fiber layer 14 can improve the compression and wear resistance of the cable, thereby making the cable not easily damaged.

[0034] A wrapped shielding layer 15 is provided on the inner side of the tensile fiber layer 14. The tensile fiber layer 14 is located between the outer sheath 13 and the wrapped shielding layer 15. The wrapped shielding layer 15 is located in a copper wire woven mesh structure. The wrapped shielding layer 15 has good electrical conductivity, which enhances the anti-interference ability of the cable and can cooperate with the tensile fiber layer 14 to improve the overall structural strength of the cable.

[0035] A flame retardant layer 16 is arranged inside the wrapped shielding layer 15. The flame retardant layer 16 is a silicone rubber filler. The flame retardant layer 16 has excellent flame retardancy and high temperature resistance, and can remain stable under high temperature and extreme conditions.

[0036] A reinforcing core 17 is provided inside the flame retardant layer 16 . The reinforcing core 17 is located at the center of the flame retardant layer 16 . The reinforcing core 17 is formed by winding galvanized steel wires, which can increase the overall tensile strength of the cable.

[0037] Communication cores 18 and power cores 19 are distributed in a circular array on the outside of the reinforcing core 17. Both the communication cores 18 and the power cores 19 are wrapped by a flame retardant layer 16. The communication cores 18 are used to transmit data or signals, and the power cores 19 are used to transmit electrical energy, so that the cable can meet different usage requirements on ships.

[0038] When in use, the male connector 3 and the female connector 4 are respectively fixed to the ends of the branch cable 2 and the trunk cable 1 to be connected through a heat shrink process, and the female connector 4 is moved close to the male connector 3 to complete the plugging, so that the trunk cable 1 and the branch cable 2 are connected to realize the power signal transmission on the ship. In this process, the plug block 5 on the female connector 4 is plugged into the groove in the male connector 3, so that the card groove 6 on the plug block 5 coincides with the rotation groove 7 on the male connector 3, and the inner sleeve 8 on the outer side of the male connector 3 is rotated to make the card block 9 complete the card groove 6 on the plug block 5 in the rotation groove 7, thereby connecting the trunk cable 1 of the female connector 4 to the branch cable 2 on the male connector 3. While ensuring the stability of the connection, it can be disassembled and repaired without destroying the heat shrink sleeve to avoid damage to the cable. After the assembly is completed, the inner sleeve 8 is screwed in by the locking screw The groove 10 is threadedly connected to the outer sleeve 11 on the male connector 3 which is non-rotatable through the limit ring 12, so that the inner sleeve 8 cannot rotate on the outside of the male connector 3, so that the connection between the trunk cable 1 and the branch cable 2 is not easy to loosen and fall off. The outer sheath 13 made of fluoroplastic provides the cable with good insulation and waterproof properties, and the cable's compression and wear resistance, anti-interference ability and flame retardant insulation are improved through the aramid yarn woven tensile fiber layer 14, the copper wire woven mesh wrapped shielding layer 15 and the silicone rubber filled flame retardant layer 16, so that the cable is not easy to be damaged and can adapt to the special use environment on the ship. The signal and power transmission functions are respectively realized through the communication line core 18 and the power line core 19, and the overall structural strength of the cable is enhanced through the reinforcing core 17 wound with galvanized steel wire to meet different usage requirements on the ship.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A flame-retardant power cable for ship use, comprising a trunk cable (1) and a branch cable (2), characterized in that: A male connector (3) is provided at the connection point between the trunk cable (1) and the branch cable (2); the male connector (3) is provided at one end of the branch cable (2) close to the trunk cable (1); a female connector (4) is provided at one end of the trunk cable (1) close to the male connector (3); the female connector (4) and the male connector (3) are adapted to each other; The outer side of the female joint (4) is fixedly mounted with equally spaced plug blocks (5), and the plug blocks (5) are distributed in a ring array around the female joint (4), and the inner sides of the plug blocks (5) are all provided with slots (6); The outer side of the male joint (3) is provided with a rotation groove (7), and the outer side of the male joint (3) is provided with an inner sleeve (8). The inner sleeve (8) is movably connected to the outer side of the male joint (3) through the rotation groove (7) and is located at the bottom of the female joint (4). The inner side of the inner sleeve (8) is fixedly mounted with equidistantly arranged clamping blocks (9), and the clamping blocks (9) are mutually adapted to the clamping groove (6) and correspond one-to-one with the plug blocks (5).

2. A flame-retardant power cable for shipboard use according to claim 1, characterized in that: The inner sleeve (8) is provided with a locking thread (10) at one end close to the male joint (3), an outer sleeve (11) is provided on the outer side of the male joint (3), the branch cable (2) passes through the outer sleeve (11) as a whole, the inner sleeve (8) is threadedly connected to the outer sleeve (11) via the locking thread (10), and the outer sleeve (11) is installed on the outer side of the branch cable (2) via a limiting ring (12).

3. The flame-retardant power cable for shipboard use according to claim 1, characterized in that: The outer sides of the trunk cable (1) and the branch cable (2) are both provided with an outer sheath (13), and the inner side of the outer sheath (13) is provided with a tensile fiber layer (14); the outer sheath (13) is made of fluoroplastic material, and the tensile fiber layer (14) is made of aramid yarn.

4. A flame-retardant power cable for shipboard use according to claim 3, characterized in that: A wrapping shielding layer (15) is provided on the inner side of the tensile-resistant fiber layer (14); the tensile-resistant fiber layer (14) is located between the outer sheath (13) and the wrapping shielding layer (15); and the wrapping shielding layer (15) is located in a copper wire braided mesh structure.

5. A flame-retardant power cable for shipboard use according to claim 4, characterized in that: A flame retardant layer (16) is provided on the inner side of the wrapped shielding layer (15), and the flame retardant layer (16) is a silicone rubber filler.

6. A flame-retardant power cable for shipboard use according to claim 5, characterized in that: A reinforcing core (17) is provided on the inner side of the flame retardant layer (16), and the reinforcing core (17) is located at the center of the flame retardant layer (16).

7. A flame-retardant power cable for shipboard use according to claim 6, characterized in that: Communication line cores (18) and power line cores (19) are distributed in a ring array on the outside of the reinforcing core (17), and the communication line cores (18) and power line cores (19) are both wrapped by a flame retardant layer (16).

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