Fire early warning emergency fireproof cable

Abstract

The invention belongs to the field of fireproof cables, and particularly relates to a fire early warning emergency fireproof cable which comprises a plurality of cable cores. The plurality of cable cores are sleeved with an inner protective sleeve. The outer part of the inner protective sleeve is sleeved with an outer protective sleeve; a heat insulation filling layer is filled between the outer protective sleeve and the inner protective sleeve; the outer portion of the outer protective sleeve is sleeved with a sleeve. A plurality of honeycomb grooves are formed in the middle of the sleeve; the honeycomb grooves are filled with fire extinguishing agents. A plurality of nozzles are formed in the outer side of the sleeve; the nozzle is communicated with the honeycomb groove; the middle part of the nozzle is fixedly connected with a protective block; the protection block is formed by solidifying a liquid material at normal temperature; diaphragms are fixedly connected to the interiors of the honeycomb grooves; the diaphragm is arranged between the fire extinguishing agent and the protective block; through the above structure, when a small ignition point appears near the cable to burn the cable, fire extinguishing treatment can be automatically carried out on a small fire source, the situation of fire behavior expansion is reduced, and damage to the cable is reduced.

Description

Technical Field

[0001] The invention belongs to the field of fireproof cables, in particular to a fire early warning emergency fireproof cable. Background Art

[0002] Fire-resistant cable, also known as fire-resistant cable or flame-retardant cable, is a special cable that can maintain circuit integrity for a certain period of time when a fire occurs.

[0003] The fire warning emergency system includes a fire warning system and emergency facilities such as emergency lighting and evacuation instructions. These warning emergency facilities require the use of fireproof cables to ensure that signals can be transmitted quickly and accurately when a fire occurs and to maintain the normal operation of emergency equipment. However, when a small fire point appears near the existing fireproof cable, the fire sensor device is not triggered yet. The fireproof cable is easily damaged by continuous burning from a small fire source, which affects the fire warning emergency system.

[0004] To this end, the present invention provides a fire early warning emergency fireproof cable. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the fire warning emergency fireproof cable described in the present invention comprises multiple cable cores; the outer sheaths of the multiple cable cores are provided with inner protective sheaths; the outer sheaths of the inner protective sheaths are provided with outer protective sheaths; a heat insulating filling layer is filled between the outer protective sheaths and the inner protective sheaths; the outer sheath of the outer protective sheath is provided with a sleeve; a plurality of honeycomb grooves are opened in the middle of the sleeve; the interior of the honeycomb grooves is filled with fire extinguishing agent; a plurality of nozzles are opened on the outer side of the sleeve; the nozzles are connected with the honeycomb grooves; through the above structure, when a small fire point appears near the cable and burns the cable, the small fire source can be automatically extinguished to reduce the occurrence of fire expansion and reduce damage to the cable.

[0007] Preferably, a protective block is fixedly connected to the middle part of the nozzle; the protective block is formed by solidification of liquid material at room temperature; through the above structure, the fire extinguishing agent is isolated from the external environment, reducing the contact between substances in the external environment and the fire extinguishing agent and causing the fire extinguishing agent to deteriorate, so that the fire extinguishing agent can be in good working condition.

[0008] Preferably, a diaphragm is fixedly connected to the inside of the honeycomb groove; the diaphragm is arranged between the fire extinguishing agent and the protective block; through the above structure, when the liquid material used to form the protective block is dripped into the inside of the nozzle, the diaphragm will block the dripping liquid material, thereby reducing the occurrence of the liquid material penetrating into the fire extinguishing agent and affecting the fire extinguishing agent.

[0009] Preferably, the filling material of the thermal insulation filling layer is magnesium oxide powder; through the above structure, the high chemical stability and high temperature resistance of magnesium oxide powder can be used to maintain a longer stable time under high temperature conditions, so that the fire-proof cable used for fire warning and emergency can support a longer period of time for operation, and magnesium oxide powder, as an inorganic substance, will not burn or support combustion, further reducing the occurrence of cable core burning.

[0010] Preferably, a support plate is fixedly connected to the middle part of the inner protective sheath; the other end of the support plate is fixedly connected to the inner side wall of the outer protective sheath; through the above structure, when the cable is produced and a heat insulating filling layer is added between the inner protective sheath and the outer protective sheath, the inner protective sheath can be deviated inside the outer protective sheath, resulting in partial contact between the inner protective sheath and the outer protective sheath. Therefore, when the cable is burned by flames, the time required for the temperature to be transferred to the cable core is increased, so that the cable core can last longer in the fire.

[0011] Preferably, the size of the nozzle is smaller than the cross-sectional size of the honeycomb groove; through the above structure, the speed of the gas ejection can be increased, so that the airflow can be sprayed to a farther distance, thereby improving the fire extinguishing effect.

[0012] Preferably, the support plate is made of flame-retardant polyethylene; the low thermal conductivity of flame-retardant polyethylene itself can reduce the occurrence of heat being quickly conducted through the support plate to the cable core, thereby improving the protection effect on the cable core and enabling the cable core to work stably for a longer time in a fire scene.

[0013] Preferably, the fire warning cable uses Internet of Things technology, allowing data to be transmitted to a central monitoring system via wireless or wired means to provide early warning of fire.

[0014] The beneficial effects of the present invention are as follows: 1. The fire warning emergency fireproof cable described in the present invention can automatically extinguish a small fire source when a small fire point appears near the cable and burns the cable through the arrangement of the casing, honeycomb groove, fire extinguishing agent and nozzle, thereby reducing the occurrence of fire expansion and reducing damage to the cable.

[0015] 2. The fire warning emergency fireproof cable described in the present invention isolates the fire extinguishing agent from the external environment by setting a protective block, reduces the contact between substances in the external environment and the fire extinguishing agent and causes the fire extinguishing agent to deteriorate, and enables the fire extinguishing agent to be in good working condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a stereogram in the present invention; Figure 2 It is a cross-sectional schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the honeycomb slot in the present invention; Figure 4 It is a structural schematic diagram of the fire extinguishing agent in the present invention.

[0018] In the figure: 1. cable core; 12. inner protective sleeve; 13. outer protective sleeve; 14. thermal insulation filling layer; 15. casing; 16. honeycomb groove; 17. fire extinguishing agent; 18. nozzle; 2. protective block; 3. diaphragm; 4. support plate. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] like Figures 1 to 4 As shown, a fire warning emergency fireproof cable according to an embodiment of the present invention comprises a plurality of cable cores 1; an inner protective sleeve 12 is provided on the outer side of the plurality of cable cores 1; an outer protective sleeve 13 is provided on the outer side of the inner protective sleeve 12; a heat insulating filling layer 14 is filled between the outer protective sleeve 13 and the inner protective sleeve 12; a sleeve 15 is provided on the outer side of the outer protective sleeve 13; a plurality of honeycomb grooves 16 are provided in the middle of the sleeve 15; a fire extinguishing agent 17 is filled in the interior of the honeycomb grooves 16; a plurality of nozzles 18 are provided on the outer side of the sleeve 15; the nozzles 18 are connected to the honeycomb grooves 16; in the cable When a fire point appears near the outside of the cable, the fire point will bake the sleeve 15, and the fire extinguishing agent 17 closest to the fire point will gradually heat up. When the fire extinguishing agent 17 is heated to a certain temperature, it will quickly vaporize and decompose to form a large amount of fire extinguishing gas or solid particles. These gases or solid particles are ejected through the nozzle 18 and rush to the fire point, so that the fire source is isolated from oxygen and then extinguished, reducing the spread of small fire sources. Through the above structure, when a small fire point appears near the cable and burns the cable, the small fire source can be automatically extinguished, reducing the spread of the fire and reducing damage to the cable.

[0021] like Figures 1 to 4 As shown, a protective block 2 is fixedly connected to the middle of the nozzle 18; the protective block 2 is formed by solidifying the liquid material at room temperature; during production, the fire extinguishing agent 17 is first filled into the honeycomb groove 16, and then the liquid material is dripped into the nozzle 18, and the protective block 2 is formed after the liquid material solidifies at room temperature. The fire extinguishing agent 17 is isolated from the external environment by the protective block 2, reducing the contact between the substances in the external environment and the fire extinguishing agent 17 and causing the fire extinguishing agent 17 to deteriorate, so that the fire extinguishing agent 17 can be in good working condition.

[0022] like Figure 4 As shown, a diaphragm 3 is fixedly connected to the inside of the honeycomb groove 16; the diaphragm 3 is arranged between the fire extinguishing agent 17 and the protective block 2; when the liquid material used to form the protective block 2 is dripped into the nozzle 18, the diaphragm 3 will block the dripping liquid material, thereby reducing the occurrence of the liquid material penetrating into the fire extinguishing agent 17 and affecting the fire extinguishing agent 17.

[0023] like Figure 1 to Figure 2 As shown, the filling material of the thermal insulation filling layer 14 is magnesium oxide powder; utilizing the high chemical stability and high temperature resistance of magnesium oxide powder, it can maintain a longer stable time under high temperature conditions, so that the fireproof cable used for fire warning emergency can support longer operation time, and magnesium oxide powder, as an inorganic substance, will not burn or support combustion, further reducing the occurrence of burning of the cable core 1.

[0024] like Figure 1 to Figure 2 As shown, a support plate 4 is fixedly connected to the middle of the inner protective sheath 12; the other end of the support plate 4 is fixedly connected to the inner wall of the outer protective sheath 13; through the above structure, when the cable is produced and a heat insulating filling layer 14 is added between the inner protective sheath 12 and the outer protective sheath 13, the inner protective sheath 12 can be deviated inside the outer protective sheath 13, which causes the inner protective sheath 12 to partially fit with the outer protective sheath 13, thereby increasing the time required for the temperature to be transferred to the cable core 1 when the cable is burned by flames, so that the cable core 1 can last longer in the fire.

[0025] like Figures 1 to 4 As shown, the size of the nozzle 18 is smaller than the cross-sectional size of the honeycomb groove 16; when working, a large amount of gas generated by the reaction of the fire extinguishing agent 17 will form a high pressure inside the fire extinguishing agent 17, and the speed of the gas ejection can be increased through the smaller honeycomb groove 16, so that the airflow can be sprayed to a farther distance, thereby improving the fire extinguishing effect.

[0026] like Figure 1 to Figure 2 As shown, the support plate 4 is made of flame-retardant polyethylene; by utilizing the low thermal conductivity of flame-retardant polyethylene itself, the occurrence of heat being quickly conducted to the cable core 1 through the support plate 4 can be reduced, thereby improving the protection effect on the cable core 1 and enabling the cable core 1 to work stably for a longer period of time in a fire scene.

[0027] During operation, when a fire point appears near the outside of the cable, the fire point will bake the sleeve 15, and the fire extinguishing agent 17 closest to the fire point will gradually heat up. When the fire extinguishing agent 17 is heated to a certain temperature, it will quickly vaporize and decompose to form a large amount of fire extinguishing gas or solid particles. These gases or solid particles are ejected through the nozzle 18 and rush to the fire point, so that the fire source is isolated from oxygen and then extinguished, reducing the spread of small fire sources.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fire warning emergency fireproof cable, comprising a plurality of cable cores (1); characterized in that: The outer sheaths of the plurality of cable cores (1) are provided with inner protective sheaths (12); the outer sheaths of the inner protective sheaths (12) are provided with outer protective sheaths (13); a heat insulating filling layer (14) is filled between the outer protective sheaths (13) and the inner protective sheaths (12); the outer sheaths of the outer protective sheaths (13) are provided with sleeves (15); a plurality of honeycomb grooves (16) are provided in the middle of the sleeves (15); the interior of the honeycomb grooves (16) is filled with a fire extinguishing agent (17); a plurality of nozzles (18) are provided on the outer side of the sleeves (15); and the nozzles (18) are connected to the honeycomb grooves (16).

2. A fire warning emergency fireproof cable according to claim 1, characterized in that: A protective block (2) is fixedly connected to the middle of the nozzle (18); the protective block (2) is formed by solidification of liquid material at room temperature.

3. A fire warning emergency fireproof cable according to claim 2, characterized in that: A diaphragm (3) is fixedly connected inside the honeycomb groove (16); the diaphragm (3) is arranged between the fire extinguishing agent (17) and the protection block (2).

4. A fire warning emergency fireproof cable according to claim 1, characterized in that: The filling material of the heat-insulating filling layer (14) is magnesium oxide powder.

5. A fire warning emergency fireproof cable according to claim 1, characterized in that: A support plate (4) is fixedly connected to the middle of the inner protective sleeve (12); the other end of the support plate (4) is fixedly connected to the inner side wall of the outer protective sleeve (13).

6. A fire warning emergency fireproof cable according to claim 1, characterized in that: The size of the nozzle (18) is smaller than the cross-sectional size of the honeycomb groove (16).

7. A fire warning emergency fireproof cable according to claim 5, characterized in that: The support plate (4) is made of flame-retardant polyethylene.

8. The fire warning emergency fireproof cable according to claim 1, characterized in that: The fire warning cable uses Internet of Things technology, allowing data to be transmitted to the central monitoring system wirelessly or wired to provide early warning of fires.

Images