A cable protection device and a cable joint

Abstract

The utility model provides a kind of cable protection device and cable joint, it is related to electric power equipment safety protection technical field.Cable protection device includes flexible protective sleeve, and the both ends of flexible protective sleeve are fixedly connected with conical barrel, two conical barrels are fixedly arranged with fire extinguishing agent storage cavity at the edge away from flexible protective sleeve, and the inside of fire extinguishing agent storage cavity is filled with superfine dry powder fire extinguishing agent, cavity is formed between fire extinguishing agent storage cavity and flexible protective sleeve, and temperature sensor and release assembly are arranged in cavity, controller is arranged in temperature sensor, and controller is used to start release assembly, release assembly is used to cut fire extinguishing agent storage cavity so that superfine dry powder fire extinguishing agent inhibits fire extinguishing, cable joint includes two locking head components for locking cable, and cable protection device is connected between two locking head components.The utility model is through temperature monitoring and automatic fire extinguishing function, realized the active intervention to cable joint fire, to improve safety.

Description

Technical Field

[0001] This utility model relates to the field of power equipment safety protection technology, and in particular to a cable protection device and a cable joint. Background Technology

[0002] Cables play an indispensable role in the infrastructure of modern society, from urban underground utility tunnels to complex industrial workshops, from power supply systems in high-rise buildings to power collection lines in new energy power plants. The stable and safe operation of cables is the cornerstone of ensuring the normal operation of society.

[0003] However, cable joints are prone to localized overheating due to potential defects in manufacturing or long-term operation, such as increased contact resistance, insulation aging, mechanical vibration, or external environmental corrosion. This can lead to insulation combustion and serious fire accidents, causing not only large-scale power outages and communication paralysis, resulting in huge direct economic losses, but also posing an extreme threat to human life and property safety due to the toxic smoke and spreading fire released during combustion.

[0004] Currently, fire protection for cable joints mainly relies on measures such as wrapping the cable joint with fireproof blankets, applying fireproof coatings, or installing fireproof partitions to form physical isolation in the event of a fire, delaying the invasion of flames and high temperatures into the internal core joint. However, passive fire protection cannot effectively intervene in the early stages of a fire, that is, when the joint overheats due to a fault or produces an open flame. Once the fire exceeds its protection threshold, the protection measures become ineffective. Furthermore, it cannot suppress the spread of fire in confined spaces or areas with dense equipment. Therefore, passive fire protection cannot effectively suppress fire after it exceeds its protection threshold. At the same time, the added fireproof layer often affects the heat dissipation of the joint, which may exacerbate its temperature rise during normal operation, resulting in the opposite effect.

[0005] Therefore, in order to address the above problems, the applicant needs to design a cable protection device and a cable connector to solve the problem. Utility Model Content

[0006] The purpose of this invention is to provide a cable protection device and a cable joint to proactively intervene in cable joint fires, thereby improving safety.

[0007] On one hand, this application provides a cable protection device, including a flexible protective sleeve, with conical cylinders fixedly connected to both ends of the flexible protective sleeve. Fire extinguishing agent storage chambers are fixedly disposed at the edges of the two conical cylinders away from the flexible protective sleeve, and the interior of the fire extinguishing agent storage chambers is filled with ultrafine dry powder fire extinguishing agent. A cavity is formed between the fire extinguishing agent storage chambers and the flexible protective sleeve, and at least one temperature sensor and a release component are disposed within the cavity. A controller is disposed within the temperature sensor, and the controller is used to activate the release component. The release component is used to cut the fire extinguishing agent storage chamber so that the ultrafine dry powder fire extinguishing agent suppresses fire extinguishing.

[0008] Preferably, the flexible protective sleeve is made of silicone rubber. The silicone rubber flexible protective sleeve provides good flexibility and high temperature resistance, ensuring that the protective sleeve can adapt to the shape of the cable joint and withstand high temperature environment.

[0009] Preferably, the extinguishing agent storage chamber is a polymer film bag. The polymer film bag is easy to cut and release the extinguishing agent, and is also lightweight and low in cost.

[0010] Preferably, the release assembly includes a fixed chamber fixedly connected to the inner wall of the flexible protective sleeve, and a release groove is provided on the fixed chamber. An electric telescopic rod is fixedly installed inside the fixed chamber, and a connector is provided at the output end of the electric telescopic rod. A cutter is fixedly connected to the connector, and the cutter is slidably connected to the release groove. The release assembly drives the cutter to cut the extinguishing agent storage chamber through the electric telescopic rod, thereby achieving rapid and reliable release of the extinguishing agent.

[0011] Preferably, in another aspect, this application also provides a cable connector for a cable protection device, including two locking head assemblies for locking the cable, and a cable protection device is fixedly connected between the two locking head assemblies.

[0012] Preferably, the locking head assembly includes a hollow cylinder, and a reinforcing ring is sleeved on the outside of the hollow cylinder. A tightening strap is fixedly provided at one end of the reinforcing ring, and a tightening groove corresponding to the tightening strap is provided at the other end of the reinforcing ring. The tightening strap and the reinforcing ring ensure a tight connection between the cable and the locking head assembly to prevent loosening.

[0013] Preferably, a fixing block is fixedly provided on the hollow cylinder, and a threaded cylinder is fixedly provided on one side of the fixing block. A locking nut is threaded on the outer side of the threaded cylinder. The threaded cylinder and the locking nut allow adjustment of the locking force, ensuring a tight connection between the cable and the locking head assembly, and facilitating installation and disassembly.

[0014] Preferably, the hollow cylinder and the threaded cylinder are thermoplastic polyurethane elastic cylinders, which provide elasticity and wear resistance, thereby enhancing the durability of the cable joint.

[0015] This utility model provides a cable protection device and cable connector, which, compared with the prior art: 1. This utility model, through the linkage of temperature sensor and release component, can quickly detect and automatically activate in the early stage of fire, instantly release fire extinguishing agent to accurately extinguish the fire source, thereby improving the safety protection level of cable joints and effectively avoiding power outages and hazards caused by the spread of fire.

[0016] 2. This utility model integrates monitoring, fire extinguishing and cable connection functions into one unit, and is easy to install. Its flexible protective sleeve and locking head not only ensure good sealing and adaptability, but also take into account normal heat dissipation. While providing protection, it avoids the problem of affecting the normal operation of the cable joint due to the addition of protection. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the flexible protective sleeve according to an embodiment of the present utility model; Figure 2 This is a three-dimensional cross-sectional view of the flexible protective sleeve according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the three-dimensional structure of the inner side of the flexible protective sleeve according to an embodiment of the present utility model; Figure 4 This is a three-dimensional structural diagram of the release component according to an embodiment of the present utility model; Figure 5 This is a schematic diagram showing the connection between the flexible protective sleeve and the locking head assembly in an embodiment of this utility model; Figure 6 This is a schematic diagram of the three-dimensional assembly structure of the locking head assembly according to an embodiment of the present utility model; Figure 7 This is a three-dimensional disassembled structural diagram of the locking head assembly according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the inner structure of the flexible protective sleeve according to an embodiment of the present invention.

[0019] icon: 1. Flexible protective sleeve; 2. Locking head assembly; 10. Conical cylinder; 11. Extinguishing agent storage chamber; 12. Temperature sensor; 13. Release assembly; 14. Cavity; 20. Hollow cylinder; 21. Reinforcing ring; 22. Tie strap; 23. Fixing block; 24. Threaded cylinder; 25. Locking nut; 130. Fixing compartment; 131. Release groove; 132. Electric telescopic rod; 133. Connector; 134. Knife. Detailed Implementation

[0020] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0021] Please refer to Figures 1-4 and Figure 8 This utility model provides a cable protection device, including a flexible protective sleeve 1 made of silicone rubber. Both ends of the flexible protective sleeve 1 are fixedly connected to conical cylinders 10. Polymer film bag fire extinguishing agent storage chambers 11 are fixedly disposed at the edges of the two conical cylinders 10 away from the flexible protective sleeve 1. The fire extinguishing agent storage chambers 11 are filled with ultrafine dry powder fire extinguishing agent. A cavity 14 is formed between the fire extinguishing agent storage chamber 11 and the flexible protective sleeve 1. At least one temperature sensor 12 and a release component 13 are disposed within the cavity 14. A controller is disposed within the temperature sensor 12, and the controller is used to activate the release component 13. The release assembly 13 is used to cut the extinguishing agent storage chamber 11 so that the ultrafine dry powder extinguishing agent can suppress the fire. When the cable joint overheats due to a fault, the temperature sensor 12 in the cavity 14 detects an abnormal high temperature. Its built-in controller will immediately activate the release assembly 13. The electric telescopic rod 132 in the release assembly 13 drives the cutter 134 forward to puncture and cut the extinguishing agent storage chamber 11 made of polymer film bag, so that the ultrafine dry powder extinguishing agent inside can be quickly released into the entire cavity 14, thereby achieving rapid and automatic suffocation extinguishing in the early stage of the fire. The electric telescopic rod 132 and the temperature sensor 12 are both self-powered and can be powered independently.

[0022] like Figure 4 As shown, the release assembly 13 includes a fixed chamber 130 fixedly connected to the inner wall of the flexible protective sleeve 1, and a release groove 131 is provided on the fixed chamber 130. An electric telescopic rod 132 is fixedly installed inside the fixed chamber 130, and a connector 133 is threadedly provided at the output end of the electric telescopic rod 132. A cutter 134 is fixedly connected to the connector 133, and the cutter 134 is slidably connected to the release groove 131. When in use, the controller starts the electric telescopic rod 132, and the electric telescopic rod 132 pushes the cutter 134 to extend smoothly from the release groove 131 and accurately cut the extinguishing agent storage chamber 11.

[0023] Please refer to Figures 5-7On the other hand, this application also provides a cable connector for a cable protection device, including two locking head assemblies 2 for locking the cable, and a cable protection device is fixedly connected between the two locking head assemblies 2. The two locking head assemblies 2 are integrated with the aforementioned cable protection device. The locking head assemblies 2 are responsible for reliably fixing the cable and achieving electrical connection, while the cable protection device in the middle provides real-time temperature monitoring and automatic fire extinguishing protection for the critical connector connection parts, thus achieving all-round safety protection.

[0024] like Figure 6 and Figure 7 As shown, the locking head assembly 2 includes a thermoplastic polyurethane elastic hollow cylinder 20, and a reinforcing ring 21 is sleeved on the outside of the hollow cylinder 20. A tightening strap 22 is fixedly provided at one end of the reinforcing ring 21, and a tightening groove corresponding to the tightening strap 22 is provided at the other end of the reinforcing ring 21. The cooperation between the tightening strap 22 and the tightening groove makes the installation operation very simple and quick, and has good tensile strength and sealing effect.

[0025] To improve the tight connection between the cable and the locking head assembly 2, a fixing block 23 is fixedly installed on the hollow cylinder 20. A thermoplastic polyurethane elastic threaded cylinder 24 is fixedly installed on one side of the fixing block 23, and a locking nut 25 is threaded on the outer side of the threaded cylinder 24.

[0026] In summary, during use, when the cable joint overheats due to a fault, the temperature sensor 12 installed in the cavity 14 of the flexible protective sleeve 1 will detect the abnormal high temperature in real time. Its built-in controller will then activate the release component 13. The electric telescopic rod 132 in the release component 13 drives the cutter 134 forward to precisely cut open the fire extinguishing agent storage cavity 11 made of polymer film bag, so that the ultrafine dry powder fire extinguishing agent filled inside is released instantly and diffuses throughout the cavity 14, thereby quickly implementing suffocation fire extinguishing in the early stage of fire and achieving active, efficient and safe protection for the cable joint.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cable protection device, characterized in that: The device includes a flexible protective sleeve (1), and both ends of the flexible protective sleeve (1) are fixedly connected to conical cylinders (10). The two conical cylinders (10) are fixedly provided with extinguishing agent storage chambers (11) at the edges away from the flexible protective sleeve (1). The interior of the extinguishing agent storage chambers (11) is filled with ultrafine dry powder extinguishing agent. A cavity (14) is formed between the extinguishing agent storage chambers (11) and the flexible protective sleeve (1). At least one temperature sensor (12) and a release component (13) are provided in the cavity (14). A controller is provided in the temperature sensor (12). The controller is used to activate the release component (13). The release component (13) is used to cut the extinguishing agent storage chamber (11) so that the ultrafine dry powder extinguishing agent suppresses the extinguishing.

2. The cable protection device according to claim 1, characterized in that: The release assembly (13) includes a fixed chamber (130) fixedly connected to the inner wall of the flexible protective sleeve (1), and a release groove (131) is provided on the fixed chamber (130). An electric telescopic rod (132) is fixedly provided inside the fixed chamber (130), and a connector (133) is provided at the output end of the electric telescopic rod (132). A cutter (134) is fixedly connected to the connector (133), and the cutter (134) is slidably connected to the release groove (131).

3. The cable protection device according to claim 1, characterized in that: The fire extinguishing agent storage chamber (11) is a polymer film bag.

4. The cable protection device according to claim 1, characterized in that: The flexible protective sleeve (1) is made of silicone rubber.

5. A cable connector, characterized in that: It includes two locking head assemblies (2) for locking cables, and the cable protection device as described in any one of claims 1 to 4 is fixedly connected between the two locking head assemblies (2).

6. The cable connector according to claim 5, characterized in that: The locking head assembly (2) includes a hollow cylinder (20), and a reinforcing ring (21) is sleeved on the outside of the hollow cylinder (20). A tightening band (22) is fixedly provided at one end of the reinforcing ring (21), and a tightening groove corresponding to the tightening band (22) is provided at the other end of the reinforcing ring (21).

7. The cable connector according to claim 6, characterized in that: A fixing block (23) is fixedly installed on the hollow cylinder (20), and a threaded cylinder (24) is fixedly installed on one side of the fixing block (23), and a locking nut (25) is threaded on the outer side of the threaded cylinder (24).

8. The cable connector according to claim 7, characterized in that: The hollow cylinder (20) and the threaded cylinder (24) are thermoplastic polyurethane elastic cylinders.

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