Fireproof compression-resistant cable

Abstract

The invention relates to the technical field of cables, in particular to a fireproof compression-resistant cable which comprises a cable bracket and a cable body arranged on the cable bracket and further comprises a plurality of protective shells, monitoring mechanisms arranged in the protective shells, power mechanisms and flame-retardant units, the protective shells are connected in a clamped mode, and each protective shell comprises an arc cover, a bottom plate and a partition plate. The bottom plate is fixedly connected with the cable bracket, the arc cover is clamped with the bottom plate, a warning lamp is arranged at the top of the arc cover, a buzzer is arranged on the side wall of the arc cover, the monitoring mechanism is provided with a monitoring output end, the monitoring output end is used for monitoring the surface temperature of a cable, the power mechanism is provided with a vibration output end, and the flame-retardant unit comprises a storage cylinder, a storage ring box, a nozzle and a liquid storage box plugging mechanism. The device can automatically extinguish cable fire, does not need manual intervention, shortens the fault processing time, and reduces the power failure range and loss.

Description

Technical Field

[0001] This invention relates to the field of cable technology, specifically to fire-resistant and pressure-resistant cables. Background Technology

[0002] Overhead cables, as a crucial carrier of power transmission, are widely used in rural power grids, industrial plants, and areas with complex terrain. Existing overhead cable protection structures suffer from multiple technical limitations, hindering the safety and reliability of power systems. Regarding fire resistance, flame retardancy, and compressive strength, traditional cable protection often relies on a single insulation layer or a simple sheath, which is insufficient to withstand the high temperatures caused by short-circuit fires and external impacts (such as falling objects or icing loads), easily leading to rapid fire spread and severe damage to the cable itself. Regarding accident location, currently, after a cable short circuit and fire, manual inspection of each section is required, which is not only time-consuming and prolongs repair time, but may also expand the scope of equipment damage due to the spread of the fire. In existing protection solutions, systems with monitoring functions mostly rely on electronic sensors, wireless communication modules, and external power supplies, which are prone to failure in extreme environments such as high temperature, high humidity, and strong electromagnetic interference, and have high maintenance costs.

[0003] Therefore, a new type of cable with a protective structure needs to be designed to solve the above-mentioned technical defects. Summary of the Invention

[0004] Therefore, it is necessary to provide a fire-resistant and pressure-resistant cable to address the problems of existing technologies.

[0005] To address the problems of existing technologies, the present invention employs the following technical solution: a fire-resistant and pressure-resistant cable, comprising a cable tray and a cable body mounted on the cable tray, and further comprising several protective shells sequentially mounted on the cable body, a monitoring mechanism, a power mechanism, and a flame-retardant unit disposed within each protective shell. The protective shells are interlocked, and the protective shells are fixedly connected to the cable body via supports. Each protective shell includes an arc-shaped cover, a base plate, and a partition. The base plate is fixedly connected to the cable tray, the arc-shaped cover is interlocked with the base plate, and the partition is fixedly disposed at the end of the arc-shaped cover. A warning light is provided on the top of the arc-shaped cover, and a buzzer is provided on its side wall. The monitoring mechanism has a monitoring output function. The output end is used to monitor the surface temperature of the cable. The power mechanism has a vibration output end. The flame-retardant unit includes a support rod fixedly installed on the base plate, a storage cylinder rotatably connected to the support rod at its end, a storage ring box fixedly installed on the partition plate, several nozzles installed on the storage ring box, a liquid storage tank fixedly installed on the side wall of the arc cover, and a sealing mechanism installed on the liquid storage tank. The storage cylinder is connected to the storage ring box through a hose, and the liquid storage tank is connected to the storage cylinder through the sealing mechanism. The sealing mechanism is driven by the storage cylinder. The vibration output end is used to drive the storage cylinder to swing back and forth. The warning light and buzzer are connected to the monitoring mechanism.

[0006] Furthermore, the monitoring mechanism also includes several equally spaced buckles, an air storage cylinder fixedly mounted on the base plate, and an air guide box mounted on the air storage cylinder. The air guide box is connected to the bottom of all the buckles, and the air storage cylinder is connected to the inside of the air guide box through a one-way valve. The air storage cylinder is connected to the power mechanism, and several heat-conducting plates are symmetrically arranged in a ring on each buckle.

[0007] Furthermore, the power mechanism also includes a support frame fixedly mounted on the base plate, a ventilation box fixedly mounted on the support frame, a fan rotatably mounted inside the ventilation box, a ventilation pipe mounted on the ventilation box, a limiting ring fixedly mounted on the ventilation box, and a cam rotatably mounted on the limiting ring. The rotation axis of the cam is coaxially and fixedly connected to the rotation axis of the wind turbine. The ventilation pipe is connected to the air storage tank, and the cam is connected to the vibration output end for transmission.

[0008] Furthermore, the end of the gas storage cylinder is provided with a cap, which is connected to the vent pipe. A connecting ring is threaded onto the cap, and the other end of the connecting ring is threaded onto the gas storage cylinder. A sealing soft membrane is fixedly clamped onto the connecting ring. An installation ring is fixedly provided inside the cap, and several needles are arranged in a ring on the installation ring.

[0009] Furthermore, the power mechanism also includes a limiting tube fixedly installed on the side of the support frame, a movable rod elastically installed in the limiting tube, a top plate fixedly installed at one end of the movable rod, a connecting plate hinged to the other end of the movable rod, and a limiting arc strip installed below the storage cylinder and fixedly connected to the bottom plate. The storage cylinder is slidably connected to the limiting arc strip, the connecting plate is hinged to the side wall of the storage cylinder, and the top plate is always in close contact with the cam under elastic action.

[0010] Furthermore, the movable rod is the vibration output end of the power mechanism.

[0011] Furthermore, the bottom of the storage tank is provided with a liquid outlet, and the sealing mechanism includes an installation sleeve coaxially fixed on the liquid outlet, a sealing soft film fixedly covered on the liquid outlet, a sliding box formed on the side wall of the installation sleeve, a T-shaped sliding plate slidably disposed in the sliding box, a cutter fixedly disposed on the T-shaped sliding plate, an actuating rod fixedly disposed on the storage cylinder, and a top column rotatably disposed on the top of the actuating rod. The bottom of the installation sleeve is connected to the inside of the storage cylinder through a hose.

[0012] Furthermore, the monitoring mechanism also includes a rotating disk rotatably mounted at the bottom of the support frame, several coils fixedly mounted on the rotating disk, and two semi-circular magnets fixedly mounted symmetrically on the support frame. All the coils are electrically connected to the buzzer and the alarm light. The rotation axis of the rotating disk is coaxially fixedly connected to the rotation axis of the wind turbine, and the magnetic poles of the two semi-circular magnets are opposite.

[0013] Furthermore, the flame-retardant unit also includes a transfer ring coaxial with the storage ring box and fixed to the partition, a guide shroud coaxially mounted on each nozzle, and an air inlet pipe mounted on each guide shroud. The transfer ring is connected to the air pipe via a flexible hose. The guide shroud has a structure that is thick at both ends and thin in the middle. One end of the air inlet pipe is connected to the side wall of the guide shroud near the nozzle, and the other end is connected to the inside of the transfer ring.

[0014] Furthermore, the flame-retardant unit also includes a liquid storage tank fixedly installed on the side wall of the arc cover, a filter plate fixedly installed on the top of the liquid storage tank, a liquid inlet fixedly installed on the liquid storage tank, a baffle plate installed at the liquid inlet by a torsion spring, and a water guide groove opened on the arc cover. There are several through holes at the bottom plate for discharging excess flame retardant. The filter plate is inclined. The liquid inlet is connected to the bottom of the liquid storage tank. The liquid storage tank is located at the end of the water guide groove.

[0015] The beneficial effects of this invention compared to the prior art are: Firstly, it features automatic and efficient fire suppression: This fire-resistant and pressure-resistant cable has an automatic fire suppression function. Once a short circuit occurs and a fire breaks out, the monitoring mechanism responds quickly, triggering the power mechanism to swing the storage tank. Simultaneously, the liquid storage tank opens, allowing water and chemical agents to mix and form a flame retardant, which is then sprayed out to extinguish the fire. This process requires no manual intervention and can quickly extinguish the fire in its early stages, effectively reducing damage to the cable caused by the fire and ensuring stable power transmission.

[0016] Secondly, precise location alarm: The monitoring mechanism not only triggers fire suppression but also generates current by rotating a fan to drive a coil that cuts magnetic lines of force, causing warning lights to flash and a buzzer to sound. It also sends a signal to the control terminal via a signal generator, precisely locating the fire's position. This allows staff to be promptly notified and arrive at the scene, shortening troubleshooting time and minimizing the scope and losses from power outages.

[0017] Thirdly, multiple layers of protection and low maintenance costs: The protective shell provides physical protection, and its modular design facilitates replacement. Furthermore, the device is designed for extreme conditions, such as automatically replenishing the liquid storage tank to prevent evaporation. In addition, maintenance only requires replacing the sealing membrane, the sealing cap membrane, and adding expansion media and chemical agents, significantly reducing maintenance costs and improving the equipment's practicality and economy. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the embodiment where the protective shell is installed outside the cable body; Figure 2 This is a schematic diagram of the internal three-dimensional structure of the protective shell in an embodiment; Figure 3 This is a three-dimensional structural diagram of the buckle in the embodiment; Figure 4 This is a three-dimensional structural diagram of the retaining ring and heat-conducting sheet in an embodiment; Figure 5 This is a cross-sectional view of the end of the gas storage tank in the embodiment; Figure 6 This is an exploded three-dimensional structural diagram of the gas storage tank in the embodiment. Figure 7 This is a three-dimensional structural diagram of the ventilation box in the embodiment; Figure 8 This is an exploded three-dimensional structural diagram of the vent box in the embodiment. Figure 9 This is a three-dimensional structural diagram of the storage cylinder in its normal state according to the embodiment; Figure 10 This is a three-dimensional structural diagram of the storage cylinder swinging to its extreme position after a fire occurs, according to an embodiment. Figure 11 This is a cross-sectional view of the mounting sleeve in the embodiment; Figure 12 This is an exploded three-dimensional structural diagram of the mounting sleeve in the embodiment; Figure 13 This is a three-dimensional structural diagram of the storage ring box in the embodiment; Figure 14 This is a cross-sectional view of the air deflector in the embodiment; Figure 15 This is an exploded three-dimensional structural diagram of the liquid storage box in the embodiment. Figure 16 This is a schematic diagram of the installation position of the liquid storage box in an embodiment.

[0019] The following are the components labeled in the diagram: 1. Cable tray; 2. Protective shell; 3. Arc cover; 4. Warning light; 5. Buzzer; 6. Water guide channel; 7. Base plate; 8. Through hole; 9. Partition plate; 10. Cable body; 11. Buckle; 12. Heat-conducting plate; 13. Air guide box; 14. Air storage cylinder; 15. Connecting ring; 16. Sealing membrane; 17. Cover; 18. Mounting ring; 19. Needle; 20. Support frame; 21. Vent box; 22. Transfer ring; 23. Fan wheel; 24. Limiting ring; 25. Cam; 26. Vent pipe; 27. Semi-arc magnet; 28. Rotary disc; 29. ​​Coil; 30. Limiting tube; 31. Movable rod; 32. Top plate; 33. Connecting plate; 34. Limiting arc strip; 35. Support rod; 36. Storage cylinder; 37. Storage ring box; 38. Nozzle; 39. Flow guide; 40. Air inlet pipe; 41. Actuating rod; 42. Top column; 43. Liquid storage tank; 44. Liquid inlet; 45. Baffle; 46. Liquid storage tank; 47. Filter plate; 48. Liquid outlet; 49. Mounting sleeve; 50. T-shaped sliding plate; 51. Cutter; 52. Sliding box; 53. Sealing membrane. Detailed Implementation

[0020] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example: Please refer to Figures 1 to 16 : The fire-resistant and pressure-resistant cable includes a cable tray 1 and a cable body 10 mounted on the cable tray 1. It also includes several protective shells 2 sequentially mounted on the cable body 10, a monitoring mechanism, a power mechanism, and a flame-retardant unit housed within each protective shell 2. The protective shells 2 are interlocked, and the protective shells 2 are fixedly connected to the cable body 10 via brackets. Each protective shell 2 includes an arc-shaped cover 3, a base plate 7, and a partition plate 9. The base plate 7 is fixedly connected to the cable tray 1, the arc-shaped cover 3 is interlocked with the base plate 7, and the partition plate 9 is fixedly mounted at the end of the arc-shaped cover 3. A warning light 4 is mounted on the top of the arc-shaped cover 3, and a buzzer 5 is mounted on its side wall. The monitoring mechanism has a monitoring output terminal for monitoring the cable surface. The surface temperature, the power mechanism has a vibration output end, the flame retardant unit includes a support rod 35 fixedly installed on the base plate 7, a storage cylinder 36 whose end is rotatably connected to the support rod 35, a storage ring box 37 fixedly installed on the partition plate 9, several nozzles 38 installed on the storage ring box 37, a liquid storage tank 43 fixedly installed on the side wall of the arc cover 3, and a sealing mechanism installed on the liquid storage tank 43. The storage cylinder 36 is connected to the storage ring box 37 through a hose, and the liquid storage tank 43 is connected to the storage cylinder 36 through the sealing mechanism. The sealing mechanism is connected to the storage cylinder 36 through a transmission. The vibration output end is used to drive the storage cylinder 36 to swing back and forth. The warning light 4 and the buzzer 5 are connected to the monitoring mechanism.

[0022] It should be noted that the storage cylinder 36 contains pre-stored chemical agents, and the liquid storage tank 43 contains water. When the chemical agents are mixed with water, they can produce flame retardants and can be used to extinguish cable fires. This is a mature existing technology and will not be elaborated further here. It should also be noted that the range of a cable short circuit fire is related to the size of the cable. The cable mentioned in this article is a 25cm diameter cable as an example. The initial fire range is usually 10-30cm around the short circuit point. The modular segment size of the protective shell 2 in this article is slightly larger than the initial fire range. It can be adjusted according to different cable models to ensure normal use of the equipment. When the device is in use, the staff assembles several protective shells 2 to provide physical protection for the cable body 10. When the cable body 10 experiences a short circuit and catches fire, the monitoring mechanism of the corresponding section will detect the temperature rise. Then, the monitoring mechanism will activate the power mechanism. At the same time, the monitoring mechanism will activate the warning light 4 and the buzzer 5. The warning light will start flashing, and the buzzer 5 will sound an alarm. (It should also be noted that the warning light is equipped with a signal generator, which transmits a signal to the control terminal so that relevant personnel can know in time which section of the cable is on fire and arrive at the scene for subsequent repairs.) Subsequently, the vibration output end of the power mechanism will drive... The storage cylinder 36 swings, simultaneously driving the sealing mechanism to open the liquid storage tank 43, allowing water from the liquid storage tank 43 to enter the storage cylinder 36. Then, driven by the vibration output end, the storage cylinder 36 swings, and the chemical agent inside mixes with the water, forming a flame retardant. The flame retardant enters the storage ring box 37 through a hose and is finally sprayed out from the nozzle 38, thereby extinguishing the fire at the location where the cable body 10 catches fire. With the above device, after a short circuit and fire in the cable, the fire location can be automatically extinguished, and a signal can be sent to the staff in a timely manner, accurately locating the fire, reducing cable damage, and the modular structural design facilitates replacement and reduces maintenance costs.

[0023] To demonstrate the detailed structure of the monitoring agency, the following features were specifically included: The monitoring mechanism also includes several equally spaced buckles 11, an air storage cylinder 14 fixedly mounted on the base plate 7, and an air guide box 13 mounted on the air storage cylinder 14. The air guide box 13 is connected to the bottom of all the buckles 11. The air storage cylinder 14 is connected to the interior of the air guide box 13 through a one-way valve. The air storage cylinder 14 is connected to the power mechanism. Several heat-conducting plates 12 are arranged symmetrically in a ring on each buckle 11.

[0024] It should be noted that the buckle 11 has a hollow design and stores an expansion medium inside, which can generate gas at high temperatures. When the cable catches fire, the buckle 11 closest to the fire location is gradually heated, and then gas is generated inside the buckle 11. The gas enters the gas storage cylinder 14 through the gas guide box 13, and then the gas is ejected from the gas storage cylinder 14 and drives the power mechanism. The heat-conducting plate 12 can increase the heat-conducting area and can transfer the heat generated at the fire point to the buckle 11 in a timely manner.

[0025] To demonstrate the detailed structure of the power mechanism, the following features were specifically included: The power mechanism also includes a support frame 20 fixedly mounted on the base plate 7, a ventilation box 21 fixedly mounted on the support frame 20, a fan rotatably mounted in the ventilation box 21, a ventilation pipe 26 mounted on the ventilation box 21, a limiting ring 24 fixedly mounted on the ventilation box 21, and a cam 25 rotatably mounted on the limiting ring 24. The rotation axis of the cam 25 is coaxially fixedly connected to the rotation axis of the wind turbine 23. The ventilation pipe 26 is connected to the air storage cylinder 14, and the cam 25 is connected to the vibration output end for transmission.

[0026] After the gas is ejected from the gas storage cylinder 14, the gas enters the ventilation pipe 26 and blows the impeller 23 to rotate. The rotation of the impeller 23 drives the cam 25 to rotate, and then the cam 25 drives the vibration output end to operate.

[0027] To ensure that the gas ejected from the gas storage tank 14 can drive the impeller 23 to rotate, the following features are specifically provided: The end of the gas storage cylinder 14 is provided with a cap 17, which is connected to the vent pipe 26. A connecting ring 15 is threadedly connected to the cap 17, and the other end of the connecting ring 15 is threadedly connected to the gas storage cylinder 14. A sealing soft membrane 16 is fixedly snapped onto the connecting ring 15. An installation ring 18 is fixedly provided inside the cap 17, and several needles 19 are arranged in a ring on the installation ring 18.

[0028] During operation, as gas gradually accumulates in the gas storage cylinder 14, the sealing membrane 16 gradually expands. When the expanded sealing membrane 16 comes into contact with the piercing needle 19, the sealing membrane 16 is punctured, and the gas in the gas storage cylinder 14 is ejected, which in turn drives the impeller 23 to rotate. The connecting ring 15 is threadedly connected to the gas storage cylinder 14. When repairing the location of the cable fire, the staff only needs to replace the sealing membrane 16 and refill the expansion medium in the retaining ring 11, which greatly reduces maintenance costs.

[0029] To demonstrate how the storage cylinder 36 is driven to oscillate back and forth, the following features were specifically included: The power mechanism also includes a limiting tube 30 fixedly installed on the side of the support frame 20, a movable rod 31 elastically installed in the limiting tube 30, a top plate 32 fixedly installed at one end of the movable rod 31, a connecting plate 33 hinged to the other end of the movable rod 31, and a limiting arc strip 34 installed below the storage cylinder 36 and fixedly connected to the bottom plate 7. The storage cylinder 36 is slidably connected to the limiting arc strip 34, the connecting plate 33 is hinged to the side wall of the storage cylinder 36, and the top plate 32 is always in close contact with the cam 25 under elastic action.

[0030] The movable rod 31 is the vibration output end of the power mechanism.

[0031] When the cam 25 rotates, the cam 25 drives the movable rod 31 to reciprocate through the top plate 32. The movement of the movable rod 31 drives the storage cylinder 36 to slide on the limiting arc strip 34 through the connecting plate 33, thereby causing the storage cylinder 36 to reciprocate.

[0032] To demonstrate the detailed structure of the blocking mechanism, the following features were specifically included: The bottom of the storage tank 43 is provided with a liquid outlet 48. The sealing mechanism includes an installation sleeve 49 coaxially fixed on the liquid outlet 48, a sealing soft film 53 fixedly covered on the liquid outlet 48, a sliding box 52 formed and mounted on the side wall of the installation sleeve 49, a T-shaped sliding plate 50 slidably mounted in the sliding box 52, a cutter 51 fixedly mounted on the T-shaped sliding plate 50, an actuating rod 41 fixedly mounted on the storage cylinder 36, and a top column 42 rotatably mounted on the top of the actuating rod 41. The bottom of the installation sleeve 49 is connected to the inside of the storage cylinder 36 through a hose.

[0033] It should be noted that under normal conditions, the T-shaped sliding plate 50 is not inserted into the sliding box 52, and the cutter 51 does not contact the sealing membrane 53. When the storage cylinder 36 swings for the first time, the storage cylinder 36 drives the trigger rod 41 to approach the T-shaped sliding plate 50, and then the top post 42 contacts the T-shaped sliding plate 50, subsequently pushing the T-shaped sliding plate 50 into the sliding box 52, causing the cutter 51 to cut the sealing membrane 53, so that water flows into the storage cylinder 36 from the outlet 48. Since the T-shaped sliding plate 50 has been inserted into the sliding box 52 and the sealing membrane 53 has been cut, the top post 42 on the trigger rod 41 will not contact the T-shaped sliding plate 50 again during subsequent swings of the storage cylinder 36, thus ensuring the normal operation of the equipment.

[0034] To demonstrate how the alarm light and buzzer 5 are connected to the monitoring mechanism, the following features are specifically included: The monitoring mechanism also includes a rotating disk 28 rotatably mounted on the bottom of the support frame 20, several coils 29 fixedly mounted on the rotating disk 28, and two semi-arc magnets 27 fixedly mounted symmetrically on the support frame 20. All the coils 29 are electrically connected to the buzzer 5 and the alarm light. The rotation axis of the rotating disk 28 is coaxially fixedly connected to the rotation axis of the wind turbine 23. The magnetic poles of the two semi-arc magnets 27 are opposite.

[0035] When the device is running, the wind turbine 23 rotates, which drives the rotating disk 28 to rotate. The rotating disk 28 drives all the coils 29 to rotate. The rotating coils 29 cut the magnetic field lines, thereby generating current (it should be noted that the current generation here is a mature existing technology, so it will not be described in detail). Then, the buzzer 5 is activated to sound the alarm, the alarm light flashes, and the signal generator on the alarm light also transmits a signal, which makes it easy for the staff to accurately locate the location where the cable body 10 has short-circuited and caught fire.

[0036] To ensure that the flame retardant mixed inside the storage cylinder 36 can be sprayed more smoothly for fire extinguishing, the following features are specifically designed: The flame-retardant unit also includes a transfer ring 22 coaxial with the storage ring box 37 and fixed to the partition 9, a guide shroud 39 coaxially mounted on each nozzle 38, and an air inlet pipe 40 mounted on each guide shroud 39. The transfer ring 22 is connected to the air pipe 26 via a flexible hose. The guide shroud 39 has a structure that is thick at both ends and thin in the middle. One end of the air inlet pipe 40 is connected to the side wall of the guide shroud 39 near the nozzle 38, and the other end is connected to the inside of the transfer ring 22.

[0037] As the flame retardant is ejected from the nozzle 38, gas enters the transfer ring 22 from the vent pipe 26, and then enters the flow guide shroud 39 through the air inlet pipe 40, where it mixes with the flame retardant ejected from each nozzle 38, thereby enabling the flame retardant ejected from the nozzle 38 to be ejected quickly (the structural principle here is similar to that of a steam jet pump).

[0038] To prevent the extreme situation where the liquid in the storage tank 43 evaporates, the following features are specifically provided: The flame retardant unit also includes a liquid storage tank 46 fixedly installed on the side wall of the arc cover 3, a filter plate 47 fixedly installed on the top of the liquid storage tank 46, a liquid inlet 44 fixedly installed on the liquid storage tank 43, a baffle 45 rotatably installed at the liquid inlet 44 by a torsion spring, and a water guide groove 6 opened on the arc cover 3. The bottom plate 7 has several through holes 8, which are used to discharge excess flame retardant. The filter plate 47 is inclined. The liquid inlet 44 is connected to the bottom of the liquid storage tank 46. The liquid storage tank 46 is located at the end of the water guide groove 6.

[0039] It should be noted that under normal conditions, the baffle 45 blocks the liquid inlet 44 under the action of the torsion spring. When it rains, rainwater is guided by the water guide 6 to the liquid storage tank 46. As more and more rainwater accumulates in the liquid storage tank 46, the baffle 45 will be opened by the gravity of the water, and then the rainwater can flow into the liquid storage tank 43 to replenish the water in the liquid storage tank 43 and prevent the extreme situation of the water inside the liquid storage tank 43 being evaporated. In addition, the inclined filter plate 47 on the liquid storage tank 46 can prevent impurities from entering the liquid storage tank 46, and the filter holes on the bottom plate 7 can ensure heat dissipation and facilitate the discharge of excess flame retardant after the fire of the cable body 10 is extinguished.

[0040] The working principle of this device is as follows: During installation, workers sequentially cover the cable body 10 with multiple protective shells 2 and snap them together. These shells are connected to the cable body 10 via a bracket, and the base plate 7 is fixed to the cable tray 1. When the cable body 10 short-circuits and catches fire, the surrounding temperature rises. The expansion medium inside the retaining ring 11 generates gas upon heating, which enters the gas storage cylinder 14 through the gas guide box 13. As the gas accumulates, the sealing membrane 16 expands and is punctured by the piercing needle 19, causing the gas to spray out from the gas storage cylinder 14 and drive the impeller 23 inside the ventilation box 21 to rotate.

[0041] The impeller 23 drives the coaxial cam 25 to rotate, and the cam 25 pushes the movable rod 31 to reciprocate. The movable rod 31 causes the storage cylinder 36 to swing back and forth on the limiting arc strip 34 through the connecting plate 33. At the same time, the rotation of the impeller 23 drives the rotating disk 28 to rotate, and the coil 29 on it cuts the magnetic field lines of the semi-arc magnet 27 to generate current, causing the buzzer 5 to sound an alarm, the warning light 4 to flash, and a signal to be sent to the control terminal.

[0042] During the swinging process of the storage cylinder 36, the top post 42 on the trigger rod 41 pushes the T-shaped sliding plate into the sliding box 52. The cutter 51 cuts open the sealing membrane 53, and the water in the storage tank 43 flows into the storage cylinder 36 and mixes with the chemical agent to form a flame retardant, which then enters the storage ring box 37 through the hose. At this time, the gas in the vent pipe 26 enters the transfer ring 22, and then mixes with the flame retardant sprayed from the nozzle 38 through the air inlet pipe 40, accelerating the spraying of the flame retardant to extinguish the fire.

[0043] When it rains, rainwater flows into the liquid storage tank 46 through the water guide channel 6. When a certain amount is accumulated, the baffle 45 is pushed open to replenish the water in the liquid storage tank 43, ensuring that there is always water in the liquid storage tank 43 and that the equipment can work normally.

[0044] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A fire-resistant and pressure-resistant cable, comprising a cable tray (1) and a cable body (10) disposed on the cable tray (1), characterized in that, It also includes several protective shells (2) sequentially mounted on the cable body (10), a monitoring mechanism, a power mechanism, and a flame-retardant unit installed in each protective shell (2). The protective shells (2) are interlocked with each other, and the protective shells (2) are fixedly connected to the cable body (10) by a bracket. The protective shell (2) includes an arc cover (3), a base plate (7), and a partition (9). The base plate (7) is fixedly connected to the cable bracket (1), the arc cover (3) is interlocked with the base plate (7), and the partition (9) is fixedly installed at the end of the arc cover (3). A warning light (4) is installed on the top of the arc cover (3), and a buzzer (5) is installed on its side wall. The monitoring mechanism has a monitoring output end, which is used to monitor the surface temperature of the cable. The power mechanism has a vibration output end. The flame-retardant unit includes a support rod (35) fixedly mounted on the base plate (7), a storage cylinder (36) whose end is rotatably connected to the support rod (35), a storage ring box (37) fixedly mounted on the partition plate (9), several nozzles (38) mounted on the storage ring box (37), a liquid storage tank (43) fixedly mounted on the side wall of the arc cover (3), and a sealing mechanism mounted on the liquid storage tank (43). The storage cylinder (36) is connected to the storage ring box (37) through a hose. The liquid storage tank (43) is connected to the storage cylinder (36) through the sealing mechanism. The sealing mechanism is connected to the storage cylinder (36) through a transmission. The vibration output end is used to drive the storage cylinder (36) to swing back and forth. The warning light (4) and the buzzer (5) are connected to the monitoring mechanism.

2. The fire-resistant and pressure-resistant cable according to claim 1, characterized in that, The monitoring mechanism also includes several equally spaced buckles (11), an air storage cylinder (14) fixed on the base plate (7), and an air guide box (13) on the air storage cylinder (14). The air guide box (13) is connected to the bottom of all the buckles (11). The air storage cylinder (14) and the air guide box (13) are connected through a one-way valve. The air storage cylinder (14) is connected to the power mechanism. Several heat-conducting plates (12) are arranged symmetrically in a ring on each buckle (11).

3. The fire-resistant and pressure-resistant cable according to claim 2, characterized in that, The power mechanism also includes a support frame (20) fixedly mounted on the base plate (7), a ventilation box (21) fixedly mounted on the support frame (20), a wind rotatably mounted in the ventilation box (21), a ventilation pipe (26) mounted on the ventilation box (21), a limiting ring (24) fixedly mounted on the ventilation box (21), and a cam (25) rotatably mounted on the limiting ring (24). The rotation axis of the cam (25) is coaxially fixedly connected to the rotation axis of the wind wheel (23), the ventilation pipe (26) is connected to the air storage cylinder (14), and the cam (25) is connected to the vibration output end.

4. The fire-resistant and pressure-resistant cable according to claim 3, characterized in that, The end of the gas storage cylinder (14) is provided with a cap (17), which is connected to the vent pipe (26). A connecting ring (15) is threaded on the cap (17), and the other end of the connecting ring (15) is threaded to the gas storage cylinder (14). A sealing soft membrane (16) is fixedly clamped on the connecting ring (15). An installation ring (18) is fixedly provided inside the cap (17), and several needles (19) are arranged in a ring on the installation ring (18).

5. The fire-resistant and pressure-resistant cable according to claim 3, characterized in that, The power mechanism also includes a limiting tube (30) fixedly installed on the side of the support frame (20), a movable rod (31) elastically installed in the limiting tube (30), a top plate (32) fixedly installed at one end of the movable rod (31), a connecting plate (33) hinged to the other end of the movable rod (31), and a limiting arc strip (34) installed below the storage cylinder (36) and fixedly connected to the bottom plate (7). The storage cylinder (36) is slidably connected to the limiting arc strip (34), the connecting plate (33) is hinged to the side wall of the storage cylinder (36), and the top plate (32) is always in close contact with the cam (25) under the elastic action.

6. The fire-resistant and pressure-resistant cable according to claim 5, characterized in that, The movable rod (31) is the vibration output end of the power mechanism.

7. The fire-resistant and pressure-resistant cable according to claim 5, characterized in that, The bottom of the storage tank (43) is provided with an outlet (48). The sealing mechanism includes an installation sleeve (49) coaxially fixed on the outlet (48), a sealing soft film (53) fixedly covered on the outlet (48), a sliding box (52) formed on the side wall of the installation sleeve (49), a T-shaped sliding plate (50) slidably disposed in the sliding box (52), a cutter (51) fixedly disposed on the T-shaped sliding plate (50), an actuating rod (41) fixedly disposed on the storage cylinder (36), and a top column (42) rotatably disposed on the top of the actuating rod (41). The bottom of the installation sleeve (49) is connected to the inside of the storage cylinder (36) through a hose.

8. The fire-resistant and pressure-resistant cable according to claim 3, characterized in that, The monitoring mechanism also includes a rotating disk (28) rotatably mounted on the bottom of the support frame (20), several coils (29) fixedly mounted on the rotating disk (28), and two semi-arc magnets (27) fixedly mounted symmetrically on the support frame (20). All the coils (29) are electrically connected to the buzzer (5) and the alarm light. The rotation axis of the rotating disk (28) is coaxially fixed with the rotation axis of the wind turbine (23), and the magnetic poles of the two semi-arc magnets (27) are opposite.

9. The fire-resistant and pressure-resistant cable according to claim 3, characterized in that, The flame-retardant unit also includes a transfer ring (22) coaxial with the storage ring box (37) and fixed to the partition (9), a guide shroud (39) coaxially mounted on each nozzle (38), and an air inlet pipe (40) mounted on each guide shroud (39). The transfer ring (22) is connected to the air pipe (26) via a hose. The guide shroud (39) has a structure that is thick at both ends and thin in the middle. One end of the air inlet pipe (40) is connected to the side wall of the guide shroud (39) near the nozzle (38), and the other end is connected to the inside of the transfer ring (22).

10. The fire-resistant and pressure-resistant cable according to claim 1, characterized in that, The flame retardant unit also includes a liquid storage tank (46) fixedly installed on the side wall of the arc cover (3), a filter plate (47) fixedly installed on the top of the liquid storage tank (46), a liquid inlet (44) fixedly installed on the liquid storage tank (43), a baffle (45) installed at the liquid inlet (44) by a torsion spring, and a water guide groove (6) opened on the arc cover (3). There are several through holes (8) on the bottom plate (7). The through holes (8) are used to discharge excess flame retardant. The filter plate (47) is inclined. The liquid inlet (44) is connected to the bottom of the liquid storage tank (46). The liquid storage tank (46) is located at the end of the water guide groove (6).

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