A fire alarm wire with optimized process

Abstract

The present invention relates to the technical field of cables, and discloses a fire-proof alarm wire with optimized technology, which includes three groups of conductors arranged in a circular distribution and concentrically stranded by five-category oxygen-free copper soft conductor wires or six-category oxygen-free copper soft conductor wires, and bulletproof wires are added around the copper wires. Mica tapes are arranged on the outer walls of each group of conductors, and flame-retardant polyester filaments are cross-tied on the outer walls of each mica tape; by setting conductors, mica tapes, flame-retardant polyester filaments, flame-retardant ceramic silica gel, fire-proof aluminum foil wrapping, low-smoke and halogen-free flame-retardant polyolefin oxygen isolation sheath, flame-retardant asbestos rope, modified polyurethane coating and ground wire, the finished product is generally more resistant to bending, not easily prone to conductor breakage, enhancing the flame-retardant and fire-resistant performance of the product. The overall installation process can greatly improve production efficiency, effectively solve the current drawback of long production cycle, and is more conducive to winding and forming processing.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a fire alarm cable with optimized process. Background Art

[0002] A fire alarm cable is a cable specifically used in a fire automatic alarm system. It has characteristics such as flame retardancy, fire resistance, or difficult combustion, and is mainly applied to fire alarm systems, factories or warehouses with flammable substances, and large mechanical equipment that requires long-term power supply.

[0003] Traditional fire alarm cables use a type of annealed copper conductor or a type II annealed copper conductor. Such products are not resistant to bending, and conductor breakage is likely to occur during use. At the same time, since the outside of such conductors is generally wrapped with double-layer mica tape and then extruded with ceramic silica gel insulation, this structure has a complex manufacturing process and low production capacity, which is not conducive to product forming and processing.

[0004] Therefore, the present invention provides a fire alarm cable with optimized process. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0006] The present invention provides a fire alarm cable with optimized process, including three groups of conductors arranged in a circular distribution and concentrically stranded by class 5 oxygen-free copper soft conductor wires or class 6 oxygen-free copper soft conductor wires, with bulletproof wires added around the copper wires. A mica tape is provided on the outer wall of each group of conductors, a flame-retardant polyester filament is cross-tied on the outer wall of each mica tape, a flame-retardant ceramic silica gel is provided on the outer wall of each flame-retardant polyester filament, a fireproof aluminum foil wrap is jointly provided on the outer walls of the three flame-retardant ceramic silica gels, a low-smoke and halogen-free flame-retardant polyolefin oxygen barrier sheath is installed outside the fireproof aluminum foil wrap, and a flame-retardant asbestos rope is filled between the fireproof aluminum foil wrap and the low-smoke and halogen-free flame-retardant polyolefin oxygen barrier sheath. A modified polyurethane coating is sprayed on the outer wall of the low-smoke and halogen-free flame-retardant polyolefin oxygen barrier sheath, and a ground wire is provided inside the fireproof aluminum foil wrap; by providing conductors, mica tapes, flame-retardant polyester filaments, flame-retardant ceramic silica gels, fireproof aluminum foil wraps, low-smoke and halogen-free flame-retardant polyolefin oxygen barrier sheaths, flame-retardant asbestos ropes, modified polyurethane coatings, and ground wires, the finished product is generally not prone to conductor breakage, the flame retardancy and fire resistance of the product are enhanced, the overall installation process can greatly improve production efficiency, effectively solve the drawback of the long current production cycle, and is more conducive to winding and forming processing.

[0007] Preferably, a collar is provided outside the conductor. Three groups of protective components capable of elastically supporting the conductor are circumferentially and equidistantly arranged on the collar, and a thermosensitive driving component for driving the protective components to move is arranged on the collar; multiple flexible steel plates can form a physical barrier to a certain extent, blocking the spread of the flame along the cable outer sheath, helping to maintain the normal function of the cable in the initial stage of a fire, enabling it to transmit fire alarm signals to the monitoring system more accurately, and gaining more time for subsequent fire extinguishing and personnel evacuation. Further enhancing the overall fire resistance of the cable, in a high-temperature fire environment, after multiple flexible steel plates pop out, an additional protective layer can be formed outside the cable outer sheath to share part of the heat and reduce the degree of direct heating of the outer sheath, thereby protecting the internal structure of the cable and ensuring that the overall electrical performance of the cable can be maintained within a certain period of time. At the same time, the popped flexible steel plates can play a certain buffering and protective role for the cable, avoiding breakage or other damage to the internal core wires of the cable due to external impact. The popped flexible steel plates cause obvious changes in the appearance of the cable. For the personnel carrying out rescue, evacuation and other work at the fire scene, this is an intuitive warning, reminding them that there is a cable here and there may be dangerous situations such as electrical faults, prompting them to maintain a certain safety distance and avoid secondary accidents such as electric shock caused by touching the damaged cable.

[0008] Preferably, the protective component includes a fixed groove, a disc, a flexible steel plate, a spring and a limiting plate;

[0009] Three fixed grooves are circumferentially and equidistantly opened on the collar. A disc is rotatably connected inside each fixed groove. Five flexible steel plates are sequentially arranged from top to bottom at the top of the disc. The five flexible steel plates are rotatably connected to each other through a rotating shaft. Two springs are connected between every two adjacent flexible steel plates. A limiting plate is connected to the inner wall of each fixed groove. The flexible steel plate at the bottom is connected to the surface of the disc, and the top of the flexible steel plate at the top is attached to the bottom of the limiting plate.

[0010] Preferably, the thermosensitive driving component includes a vertical rod, a gear, a rack plate, a sealing plate, a sleeve and carbon dioxide gas;

[0011] A vertical rod is connected to one end of each disc away from the flexible steel plate. Each vertical rod is rotatably connected to the inner wall of the fixed groove. A gear is sleeved on the outer wall of each vertical rod. A rack plate is meshed with the outer wall of each gear. A sealing plate is connected to one end of each rack plate away from the gear. A sleeve is slidably connected to the outer wall of each sealing plate. Each sleeve is connected to the outer wall of the collar. The sleeve is filled with carbon dioxide gas.

[0012] Preferably, a sliding groove is formed inside each of the fixing grooves, a slider is slidably connected inside each of the sliding grooves, and each slider is connected to the outer wall of the rack plate; when the sealing plate drives the rack plate to move inside the collar, the rack plate drives the slider to slide inside the sliding groove, which can keep the rack plate stable during movement and maintain the stable meshing between the rack plate and the gear.

[0013] Preferably, a fire extinguishing component is arranged inside each of the flexible steel plates at the upper end, a blade is connected to each of the limiting plates, and each blade is inserted into the fire extinguishing component; when the flexible steel plate rotates and pops out, the blade moves inside the fire extinguishing component, and then the fire extinguishing component pops out synchronously to perform fire extinguishing operations.

[0014] Preferably, the fire extinguishing component includes a placement groove and powder fire extinguishing agent;

[0015] A placement groove is formed inside each of the flexible steel plates at the upper end, and each placement groove is filled with powder fire extinguishing agent.

[0016] Preferably, a tearable thin cloth is arranged on the surface of each of the flexible steel plates at the upper end, and a preset tear line for cooperating with the sliding of the blade is arranged on each tearable thin cloth; in the initial stage of a fire, the powder fire extinguishing agent inside the placement groove can quickly extinguish the small flames in the initial stage. The powder fire extinguishing agent can not only extinguish the fire, but also form a covering layer on the surface of the combustible to isolate the air, preventing the combustible from reigniting due to residual heat or re - contacting oxygen after the fire seems to be extinguished, reducing the risk of reignition. At the same time, the powder fire extinguishing agent will absorb part of the heat after being sprinkled, thereby reducing the temperature environment around the cable, reducing the melting of the cable outer skin due to heat, and thus extending the service life of the cable.

[0017] The beneficial effects of the present invention are as follows: For a fire - proof alarm wire with optimized process of the present invention, by providing a conductor, mica tape, flame - retardant polyester filament, flame - retardant ceramic silica gel, fire - proof aluminum foil wrapping, low - smoke and halogen - free flame - retardant polyolefin oxygen - barrier sheath, flame - retardant asbestos rope, modified polyurethane coating and ground wire, the finished product is generally softer, more resistant to bending, not prone to conductor breakage, enhancing the flame - retardant and fire - resistant performance of the product. The overall installation process can greatly improve production efficiency, effectively solve the current drawback of long production cycle, and at the same time reduce the problem of surface scratching of the finished product during processing, which is more conducive to winding and forming processing;

[0018] When the flexible steel plate is heated and ejected from the inside of the collar under the drive of the thermal drive component, powder fire extinguishing agent is automatically sprayed out when the flexible steel plate ejects. Through the combination of the physical barrier effect formed by the powder fire extinguishing agent and the flexible steel plate, a synergistic effect is formed by the chemical fire extinguishing effect of the powder fire extinguishing agent. The flexible steel plate blocks the flow of flame and air, while the powder fire extinguishing agent extinguishes the flame and inhibits re-ignition. The two work together to provide a more comprehensive and effective fire protection measure for the cable and its surrounding environment, making the entire fire protection system more perfect and reliable. Brief Description of the Drawings

[0019] Figure 1 is a perspective view of an embodiment of the present invention;

[0020] Figure 2 is a partial schematic sectional perspective view of the conductor in the present invention;

[0021] Figure 3 is a partial schematic sectional perspective view of the collar of the present invention;

[0022] Figure 4 is a partial schematic sectional perspective view of the sleeve of the present invention;

[0023] Figure 5 is a perspective view of the disc, flexible steel plate, spring, rack plate, sealing plate, slider and fire extinguishing component of the present invention;

[0024] Figure 6 is a partial schematic sectional perspective view of the collar of the present invention;

[0025] Figure 7 is a schematic diagram of the active state of the flexible steel plate of the present invention;

[0026] Figure 8 is a partial schematic sectional perspective view of the flexible steel plate of the present invention;

[0027] Figure 9 is Figure 3 a partial enlarged view of part A in

[0028] Description of the Reference Numerals:

[0029] 1. Conductor; 101. Mica tape; 102. Flame-retardant polyester filament; 103. Flame-retardant ceramic silica gel; 104. Fireproof aluminum foil wrapping; 105. Low-smoke and halogen-free flame-retardant polyolefin oxygen barrier sheath; 106. Flame-retardant asbestos rope; 107. Modified polyurethane coating; 108. Ground wire;

[0030] 2. Collar;

[0031] 3. Protection component; 301. Fixed groove; 302. Disc; 303. Flexible steel plate; 304. Spring; 305. Limiting plate;

[0032] 4. Thermal drive assembly; 401. Upright rod; 402. Gear; 403. Rack plate; 404. Sealing plate; 405. Sleeve; 406. Carbon dioxide gas; 407. Chute; 408. Slide block;

[0033] 5. Fire extinguishing assembly; 501. Placing groove; 502. Powder fire extinguishing agent; 503. Tearable thin cloth; 504. Preset tear line;

[0034] 6. Blade. Detailed implementation manners

[0035] Now, the subject matter described herein will be discussed with reference to example embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0036] Example 1

[0037] As Figures 1 to 8 shown, please refer with emphasis to Figure 2 , a fire alarm wire with optimized process in an embodiment of the present invention includes three groups of conductors 1 concentrically stranded by Class 5 or Class 6 oxygen-free copper soft conductor wires and with bulletproof wires added around the copper wires, which are arranged in a circular distribution. Mica tapes 101 are provided on the outer walls of each group of conductors 1, flame-retardant polyester filaments 102 cross-tied are provided on the outer walls of each mica tape 101, flame-retardant ceramic silica gels 103 are provided on the outer walls of each flame-retardant polyester filament 102, a fireproof aluminum foil wrap 104 is commonly provided on the outer walls of the three flame-retardant ceramic silica gels 103, a low-smoke and halogen-free flame-retardant polyolefin oxygen barrier sheath 105 is installed outside the fireproof aluminum foil wrap 104, and a flame-retardant asbestos rope 106 is filled between the fireproof aluminum foil wrap 104 and the low-smoke and halogen-free flame-retardant polyolefin oxygen barrier sheath 105. A modified polyurethane coating 107 is sprayed on the outer wall of the low-smoke and halogen-free flame-retardant polyolefin oxygen barrier sheath 105, and a ground wire 108 is provided inside the fireproof aluminum foil wrap 104.

[0038] The conductor 1 is made of five - type or six - type oxygen - free copper soft conductor wires concentrically stranded, with bullet - proof wires added around the copper wires, increasing the tensile strength and bending radius of the product, and enhancing the shock - proof, tensile, and bend - resistant properties of the product; the mica tape 101 is cross - tied in a mesh pattern by flame - retardant polyester filaments 102 on the outside, shaping the mica tape 101 in time to prevent the mica tape 101 from cracking or having non - overlapping phenomena, ensuring the fire - proof function of the mica tape 101. Then, flame - retardant ceramic silicone 103 is extruded on the outer layer to reinforce the shaping and crust - forming of the mica tape 101, thus stabilizing the fire - resistant effect of the mica tape 101. The double - layer flame - retardant polyester filaments 102 are tied and the double - layer flame - retardant ceramic silicone 103 is insulated and crust - solidified, adding four - layer protection to the mica tape 101, effectively improving the flame - retardant and fire - resistant properties of the product. The cable is filled with flame - retardant asbestos rope 106, effectively alleviating the impact damage of falling objects on the mica tape 101 during a fire, extending the integrity performance of the cable circuit, and enhancing the flame - retardant and fire - resistant properties of the product. The cable uses a low - smoke, halogen - free, flame - retardant polyolefin oxygen - barrier sheath 105. When the cable burns at the fire scene, the content of halogen - free acid gas, toxic and corrosive gas released is extremely small, and the smoke concentration generated is extremely low, with good flame - retardant effect. In case of a fire, it can effectively provide good escape conditions for people. When the external processing process of the cable sheath is completed, a wear - resistant, oil - resistant, acid - alkali - resistant, high - temperature - resistant, and corrosion - resistant modified polyurethane coating 107 is added simultaneously with the sheath layer, solving the problem of scratching during the product processing. Under the action of the ground wire 108, it can provide a safe conduction path for the leakage current of the cable, enabling the leakage current to be timely conducted into the ground instead of through the human body or other potentially dangerous paths, greatly reducing the risk of electric shock and casualties of personnel.

[0039] Embodiment 2

[0040] As Figures 1 to 8 shown, compared with Embodiment 1, another implementation mode of the present invention is: a collar 2 is arranged outside the conductor 1, and three groups of protection components 3 that can elastically support the conductor 1 are circumferentially and equidistantly arranged on the collar 2, and a thermal - sensitive driving component 4 for driving the activity of the protection component 3 is arranged on the collar 2.

[0041] Please refer specifically to Figure 3 、 Figure 4 、 Figure 5 . The thermal - sensitive driving component 4 includes a vertical rod 401, a gear 402, a rack plate 403, a sealing plate 404, a sleeve 405, and carbon dioxide gas 406;

[0042] One end of each disc 302 away from the flexible steel plate 303 is connected with a vertical rod 401. Each vertical rod 401 is rotatably connected to the inner wall of the fixed groove 301. A gear 402 is sleeved on the outer wall of each vertical rod 401. A rack plate 403 is meshed with the outer wall of each gear 402. One end of each rack plate 403 away from the gear 402 is connected with a sealing plate 404. A sleeve 405 is slidably connected to the outer wall of each sealing plate 404. Each sleeve 405 is connected to the outer wall of the collar 2. The sleeve 405 is filled with carbon dioxide gas 406. When the sleeve 405 is heated by fire, the carbon dioxide gas 406 will expand due to heat. After the carbon dioxide gas 406 expands, it will push the sealing plate 404 to move inside the sleeve 405, causing the sealing plate 404 to drive the rack plate 403 to move inside the collar 2. When the rack plate 403 moves, it drives the gear 402 connected to the vertical rod 401 to rotate inside the fixed groove 301, causing the disc 302 at the top of the vertical rod 401 to rotate by 90 degrees.

[0043] The components in the thermal drive assembly 4 are all made of copper alloy. When the external temperature rises to about 100 degrees, the molecular motion of the carbon dioxide gas 406 will significantly accelerate, increasing its fluidity rapidly. Then, through the carbon dioxide gas 406, the sealing plate 404 is driven to move inside the sleeve 405, enabling the disc 302 at the top of the vertical rod 401 to rotate by 90 degrees.

[0044] Please refer specifically to Figure 6 ., a sliding groove 407 is opened in each fixed groove 301. A slider 408 is slidably connected in each sliding groove 407. Each slider 408 is connected to the outer wall of the rack plate 403. When the sealing plate 404 drives the rack plate 403 to move inside the collar 2, the rack plate 403 drives the slider 408 to slide inside the sliding groove 407, which can keep the rack plate 403 stable during movement and maintain the stable meshing between the rack plate 403 and the gear 402.

[0045] Please refer specifically to Figure 3 、 Figure 5 、 Figure 7 ., the protection assembly 3 includes a fixed groove 301, a disc 302, a flexible steel plate 303, a spring 304 and a limiting plate 305;

[0046] The ferrule 2 is circumferentially and equidistantly provided with three fixing grooves 301. A disc 302 is rotatably connected inside each fixing groove 301. Five flexible steel plates 303 are sequentially arranged on the top of the disc 302 from top to bottom. The five flexible steel plates 303 are rotatably connected to each other through rotating shafts. Two springs 304 are connected between every two adjacent flexible steel plates 303. A limiting plate 305 is connected to the inner wall of each fixing groove 301. The flexible steel plate 303 at the bottom is connected to the surface of the disc 302, and the top end of the flexible steel plate 303 at the top fits against the bottom of the limiting plate 305. The disc 302 drives the multiple flexible steel plates 303 to rotate synchronously by 90 degrees inside the fixing groove 301, so that the bottom end of the limiting plate 305 no longer fits against the surface of the flexible steel plate 303 at the top. Under the action of the multiple springs 304, the multiple flexible steel plates 303 can eject out inside the fixing groove 301. The ejected flexible steel plates 303 cause obvious changes in the appearance of the cable. For the personnel carrying out rescue, evacuation and other work at the fire scene, this is an intuitive warning, reminding them that there is a cable here and there may be dangerous situations such as electrical faults, prompting them to keep a certain safe distance and avoid secondary accidents such as electric shock caused by touching the damaged cable.

[0047] Embodiment 3

[0048] As Figures 8 to 9 shown, compared with Embodiment 1, another implementation manner of the present invention is as follows:

[0049] Please refer specifically to Figure 3 、 Figure 5 、 Figure 6 、 Figure 8, a fire extinguishing component 5 is arranged inside each upper flexible steel plate 303, a blade 6 is connected to each limiting plate 305, and each blade 6 is inserted into the fire extinguishing component 5. The fire extinguishing component 5 includes a placement groove 501 and a powder fire extinguishing agent 502; a placement groove 501 is formed inside each upper flexible steel plate 303, and the powder fire extinguishing agent 502 is filled inside each placement groove 501. A tearable thin cloth 503 is arranged on the surface of each upper flexible steel plate 303, and a preset tear line 504 for cooperating with the sliding of the blade 6 is arranged on each tearable thin cloth 503; when the disc 302 drives a plurality of flexible steel plates 303 to rotate synchronously by 90 degrees inside the fixed groove 301, the top flexible steel plate 303 will rotate along the blade 6 at the bottom of the limiting plate 305, so that the blade 6 will move along the preset tear line 504, thereby cutting open the tearable thin cloth 503. When the flexible steel plate 303 is ejected, the powder fire extinguishing agent 502 inside the placement groove 501 will spill out during ejection. In the initial stage of a fire, it can quickly extinguish the initial small flames. The powder fire extinguishing agent 502 can not only extinguish the flame, but also form a covering layer on the surface of the combustible, isolating the air, preventing the combustible from reigniting due to residual heat or recontacting oxygen after the fire seems to be extinguished, reducing the risk of reignition. At the same time, the powder fire extinguishing agent 502 will absorb part of the heat after spilling out, thereby reducing the temperature environment around the cable, reducing the melting of the cable outer skin due to heat, and further extending the service life of the cable.

[0050] Working principle: The conductor 1 is made of five - class or six - class oxygen - free copper soft conductor wires concentrically stranded, with bullet - proof wires added around the copper wires, increasing the tensile strength and bending radius of the product, and enhancing the shock - proof, tensile, and bending - resistant properties of the product; outside the mica tape 101, it is cross - tied in a mesh pattern by flame - retardant polyester filaments 102 to shape the mica tape 101 in time, preventing the mica tape 101 from cracking or having non - overlapping phenomena, ensuring the fire - proof function of the mica tape 101. Then, flame - retardant ceramic silicone 103 is extruded on the outer layer to reinforce the shaping and crust - forming of the mica tape 101, thus stabilizing the refractory effect of the mica tape 101. The double - layer flame - retardant polyester filaments 102 are tied and the double - layer flame - retardant ceramic silicone 103 is insulated and crust - formed and solidified, adding four - layer protection to the mica tape 101, effectively improving the flame - retardant and fire - resistant performance of the product. The cable is filled with flame - retardant asbestos rope 106, effectively alleviating the impact damage of falling objects on the mica tape 101 during a fire, prolonging the integrity performance of the cable circuit, and enhancing the flame - retardant and fire - resistant performance of the product. The cable uses a low - smoke, halogen - free, flame - retardant polyolefin oxygen - barrier sheath 105. When the cable burns at the fire site, the content of halogen - free acid gas, toxic, and corrosive gases released is extremely small, and the smoke concentration generated is extremely low, with good flame - retardant effect. In case of a fire, it can effectively provide good escape conditions for people. When the external processing of the cable sheath is completed, a wear - resistant, oil - resistant, acid - alkali - resistant, high - temperature - resistant, and corrosion - resistant modified polyurethane coating 107 is added simultaneously with the sheath layer, solving the problem of scratching during the product processing. Under the action of the ground wire 108, a safe conduction path can be provided for the leakage current of the cable, enabling the leakage current to be promptly introduced into the ground instead of passing through the human body or other potentially dangerous paths, greatly reducing the risk of electric shock casualties for personnel;

[0051] When the sleeve 405 is heated by fire, the carbon dioxide gas 406 will expand due to heat. After the carbon dioxide gas 406 expands, it will push the sealing plate 404 to move inside the sleeve 405, causing the sealing plate 404 to drive the rack plate 403 to move inside the collar 2. The rack plate 403 drives the slider 408 to slide inside the chute 407. When the rack plate 403 moves, it drives the gear 402 connected to the vertical rod 401 to rotate inside the fixed slot 301, causing the disc 302 at the top of the vertical rod 401 to rotate by 90 degrees. The disc 302 drives multiple flexible steel plates 303 to rotate synchronously by 90 degrees inside the fixed slot 301, so that the bottom end of the limiting plate 305 no longer fits the surface of the top flexible steel plate 303. Under the action of multiple springs 304, multiple flexible steel plates 303 can eject out inside the fixed slot 301. After the flexible steel plates 303 in each set of protection components 3 are all ejected, the ejected flexible steel plates 303 cause an obvious change in the appearance of the cable. For the personnel carrying out rescue, evacuation and other work at the fire scene, this is an intuitive warning, reminding them that there is a cable here and there may be dangerous situations such as electrical faults, prompting them to maintain a certain safe distance and avoid secondary accidents such as electric shock caused by touching the damaged cable. In the high-temperature environment of the fire, after multiple sets of flexible steel plates 303 are ejected, an additional protective layer can be formed outside the cable outer skin, sharing part of the heat and reducing the degree of direct heat absorption of the outer skin, thereby protecting the internal structure of the cable and ensuring that the overall electrical performance of the cable can be maintained within a certain period of time. At the same time, the ejected flexible steel plates 303 can play a certain buffering and protective role for the cable, avoiding breakage or other damage of the internal core wires of the cable due to external impact;

[0052] When the disc 302 drives multiple flexible steel plates 303 to rotate synchronously by 90 degrees inside the fixed slot 301, the top flexible steel plate 303 will rotate along the blade 6 at the bottom of the limiting plate 305, causing the blade 6 to move along the preset tear line 504, thereby cutting open the tearable thin cloth 503. When the flexible steel plate 303 ejects out, the powder fire extinguishing agent 502 in the placement groove 501 will spill out during the ejection. In the initial stage of the fire, it can quickly extinguish the initial small flames. The powder fire extinguishing agent 502 can not only extinguish the fire, but also form a covering layer on the surface of the combustible, isolating the air and preventing the combustible from reigniting due to residual heat or recontact with oxygen after the fire seems to be extinguished, reducing the risk of reignition. At the same time, the powder fire extinguishing agent 502 will absorb part of the heat after spilling out, thereby reducing the temperature environment around the cable, reducing the melting of the cable outer skin by heat, and thus extending the service life of the cable.

[0053] The above embodiments of the specific implementation manners have been described, but the present embodiment is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of the present embodiment.

Claims

1. A process-optimized fire alarm line, characterized in that: The invention comprises three groups of conductors (1) arranged in an annular distribution and made of concentrically twisted Category V oxygen-free copper soft conductor wires or Category VI oxygen-free copper soft conductor wires and with bulletproof wires added around the copper wires, each group of conductors (1) having an outer wall provided with a mica tape (101), each mica tape (101) having an outer wall provided with cross-bound flame-retardant polyester wires (102), each flame-retardant polyester wire (102) having an outer wall provided with flame-retardant ceramic silica gel (103), and the outer walls of the three flame-retardant ceramic silica gels (103) having a common outer wall provided with a flame-retardant polyester wire (103). A fireproof aluminum foil wrap (104) is provided, a low-smoke halogen-free flame-retardant polyolefin oxygen-isolating sheath (105) is installed outside the fireproof aluminum foil wrap (104), a flame-retardant asbestos rope (106) is filled between the fireproof aluminum foil wrap (104) and the low-smoke halogen-free flame-retardant polyolefin oxygen-isolating sheath (105), a modified polyurethane coating (107) is sprayed on the outer wall of the low-smoke halogen-free flame-retardant polyolefin oxygen-isolating sheath (105), and a ground wire (108) is provided inside the fireproof aluminum foil wrap (104); A collar (2) is disposed outside the conductor (1), three groups of protective components (3) capable of elastically supporting the conductor (1) are equidistantly disposed on the collar (2) in the circumferential direction, and a thermally sensitive driving component (4) for driving the protective component (3) to move is disposed on the collar (2); The protection component (3) comprises a fixing groove (301), a disc (302), a flexible steel plate (303), a spring (304) and a limiting plate (305); Three fixed grooves (301) are equidistantly provided on the circumferential surface of the collar (2), each fixed groove (301) is rotatably connected to a disk (302), five flexible steel plates (303) are arranged on the top of the disk (302) in order from top to bottom, the five flexible steel plates (303) are rotatably connected to each other via a rotating shaft, two springs (304) are connected between any two adjacent flexible steel plates (303), the inner wall of each fixed groove (301) is connected to a limiting plate (305), the flexible steel plate (303) at the bottom is connected to the surface of the disk (302), and the top of the flexible steel plate (303) at the top is attached to the bottom of the limiting plate (305); Each flexible steel plate (303) at the top is provided with a fire extinguishing assembly (5) inside, each limiting plate (305) is connected to a blade (6), and each blade (6) is inserted inside the fire extinguishing assembly (5); The thermosensitive driving assembly (4) comprises a vertical rod (401), a gear (402), a rack plate (403), a sealing plate (404), a sleeve (405) and carbon dioxide gas (406); One end of each disc (302) away from the flexible steel plate (303) is connected to a vertical rod (401), each vertical rod (401) is rotatably connected to the inner wall of the fixed groove (301), the outer wall of each vertical rod (401) is sleeved with a gear (402), the outer wall of each gear (402) is meshed with a rack plate (403), one end of each rack plate (403) away from the gear (402) is connected to a sealing plate (404), the outer wall of each sealing plate (404) is slidably connected to a sleeve (405), each sleeve (405) is connected to the outer wall of the collar (2), and the interior of the sleeve (405) is filled with carbon dioxide gas (406).

2. The process-optimized fire alarm line according to claim 1, characterized in that: Each of the fixed grooves (301) is provided with a sliding groove (407), each of the sliding grooves (407) is slidably connected to a sliding block (408), and each of the sliding blocks (408) is connected to the outer wall of the rack plate (403).

3. The process-optimized fire alarm line according to claim 1, characterized in that: The fire extinguishing assembly (5) comprises a placement groove (501) and a powdered fire extinguishing agent (502); Each flexible steel plate (303) at the top is provided with a placement groove (501) therein, and each placement groove (501) is filled with a powder fire extinguishing agent (502).

4. The process-optimized fire alarm line according to claim 3, characterized in that: The surface of each flexible steel plate (303) at the top is provided with a tearable thin cloth (503), and each tearable thin cloth (503) is provided with a preset tear line (504) cooperating with the sliding of the blade (6).

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