CN108478962B - Curtain type isolation hot aerosol automatic fire extinguishing system, installation method of curtain type isolation hot aerosol automatic fire extinguishing system in cable trough and fire extinguishing method - Google Patents
Curtain type isolation hot aerosol automatic fire extinguishing system, installation method of curtain type isolation hot aerosol automatic fire extinguishing system in cable trough and fire extinguishing method Download PDFInfo
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- CN108478962B CN108478962B CN201810517541.XA CN201810517541A CN108478962B CN 108478962 B CN108478962 B CN 108478962B CN 201810517541 A CN201810517541 A CN 201810517541A CN 108478962 B CN108478962 B CN 108478962B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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Abstract
The invention relates to a curtain type isolation hot aerosol automatic fire extinguishing system, an installation method and a fire extinguishing method thereof in a cable trough, and the existing hot aerosol is not suitable for being used in a long cable trough. For this reason, this curtain-type keeps apart hot aerosol automatic fire extinguishing systems includes a plurality of hot aerosol automatic fire extinguishing devices, every hot aerosol automatic fire extinguishing device is furnished with two fire prevention curtains, every fire prevention curtain is furnished with a control rope, the fire prevention curtain is followed down and is equipped with the spool, the fire prevention curtain is rolled up on the spool, the control rope includes stay rope and main rope, the other end of main rope is tight in the middle section of stay rope, and draw into V word rope with a rope, V word rope holds the fire prevention curtain main part of book on the spool, the fusing point of hot melt adhesive is less than the temperature of the hot aerosol that aerosol generator produced, the fire prevention curtain is made by fire prevention cloth. The invention can locally gather high-density hot aerosol, has good fire extinguishing effect and convenient installation and use, and is particularly suitable for being installed and used in a cable trough.
Description
Technical Field
The invention relates to a curtain type isolation hot aerosol automatic fire extinguishing system, and an installation method and a fire extinguishing method thereof in a cable trough.
Background
Aerosol fire extinguishing technology is also called smoke fire extinguishing technology. It originated in the united states and was first successfully tested and patented by James Moran, the creator of the us TRS (delson) corporation. The AERO-T is firstly applied to flammable and explosive dangerous places in the industry, and is developed by means of the self-developed advanced technology (the first in the industry) and patented in China.
The aerosol is formed by suspending liquid or solid particles in a gas dispersion medium, and the aerosol fire extinguishing agent can be divided into two types: one is that before releasing the aerosol fire-extinguishing agent, the gas dispersing medium and the dispersed medium are stable, and the releasing of the aerosol fire-extinguishing agent is the process of forming aerosol by the gas dispersing liquid or solid fire-extinguishing agent; the other is that the aerosol fire extinguishing agent is released through a combustion reaction, the reaction product contains solid and gas, and the gas disperses solid particles to form aerosol, which can also be called aerosol generating agent.
Aerosol can be classified into cold aerosol and hot aerosol according to the temperature at which the aerosol is generated. At reaction temperatures above 300 ℃ it is called a hot aerosol, and conversely a cold aerosol.
The aerosol generating agent is an energetic material, and belongs to one of pyrotechnic compositions. The explosives and powders can be divided into three categories of explosives, gunpowder and pyrotechnic compositions. The selection, manufacture, performance parameters and processing of aerosol products are guided by pyrotechnics.
To reduce the temperature at which the aerosol is generated, there are two methods of using the coolant. One is to mix the coolant uniformly in the agent, which is called internal cooling; another cooling method is to place a coolant in the gas passage of the gas generator, which may be referred to as external cooling.
2015.12.02, published as CN 204815453U, discloses an explosion-proof and explosion-suppression type hot aerosol fire extinguishing device for industrial sites, which comprises a shell, an aerosol generator and a coolant. The shell is provided with a cavity and comprises a top plate and a bottom plate which are opposite, and the top plate is provided with a plurality of nozzles. The aerosol generator is assembled and fixed in the cavity and comprises a container cover, aerosol generating agent and an initiator, wherein the aerosol generating agent and the initiator are arranged in the container cover. The initiator is used to start the aerosol generator to produce the hot aerosol. The coolant is filled between the housing and the container cap and between the housing and the aerosol generating means.
The fire extinguishing effect of the hot aerosol in a closed space is best, various cables and signal wires are densely distributed in cable troughs of existing industrial and mining enterprises, the length of the cable troughs reaches dozens of meters, the length of a mine cable trough even reaches dozens of kilometers, cable nodes in the cable troughs are numerous and too dispersed, meanwhile, a plurality of power cables are arranged in the mine cable trough, ventilation needs to be kept, and the cable trough is not suitable for long-term partition.
Even if the hot aerosol automatic fire extinguishing device is densely installed in the cable duct, when a fire occurs, only the hot aerosol automatic fire extinguishing device around the ignition point is triggered, the generated hot aerosol is diffused in the whole cable duct, the fire extinguishing effect is greatly reduced, the cost of the hot aerosol automatic fire extinguishing device is high, and the dense installation in the cable duct is not practical.
Disclosure of Invention
The technical problem to be solved by the invention is how to overcome the defects in the prior art, and the invention provides a curtain type isolation hot aerosol automatic fire extinguishing system, and a mounting method and a fire extinguishing method thereof in a cable trough.
In order to solve the technical problem, the curtain type isolation hot aerosol automatic fire extinguishing system comprises a plurality of hot aerosol automatic fire extinguishing devices, each hot aerosol automatic fire extinguishing device comprises an outer cylinder, a bottom plate, an aerosol generator and a coolant, the outer cylinder is cylindrical, the top of the outer cylinder is provided with a top plate, a plurality of nozzles are formed in the top plate, the outer cylinder and the aerosol generator are assembled and fixed on the bottom plate, the aerosol generator comprises a container cover, the aerosol generator and an initiator which are arranged in the container cover, the initiator is used for starting the aerosol generator to produce hot aerosol, an inner cylinder is further arranged between the aerosol generator and the outer cylinder, the upper edge of the inner cylinder is connected with the top plate, an annular flanging is arranged on the lower edge of the inner cylinder and is connected with the outer wall of the container cover through the annular flanging, a cooling bin is formed among the bottom plate, the top plate, the inner cylinder and the outer cylinder, the coolant is filled in the cooling bin, and a plurality of communicating holes are formed in the inner cylinder wall between the annular flanging and the bottom plate.
Every thermosol automatic fire extinguishing device is furnished with two fire prevention curtains, and every fire prevention curtain is furnished with a control rope, and the fire prevention curtain is squarely, and the fire prevention curtain is down along being equipped with the spool, and the main part book of fire prevention curtain is in on the spool, the control rope includes a rope and main rope, and the both ends connection of a rope is fixed on the fire prevention curtain on the well upper portion of middle part or fire prevention curtain, arbitrary spout, intercommunicating pore are passed to the one end of main rope, get into inside the aerosol generator, bond through the hot melt adhesive and fix on the bottom plate, main rope other end fastening is on the middle section of a rope, will prop up the rope and draw into V word rope, and V word rope is walked around, and holds the fire prevention curtain main part of rolling up on the spool, the fusing point of hot melt adhesive is less than the thermosol's of aerosol generator production temperature, the fire prevention curtain is made by fire prevention cloth.
The fireproof cloth can be asbestos cloth, preferably cloth for firefighter clothing (CN 102987621A)
It is well known that the cable joint is most prone to heat and fire due to poor contact. Use this curtain formula to keep apart hot aerosol automatic fire extinguishing system, in the adapted cable duct each cable joint node top, oblique top installation hot aerosol automatic fire extinguishing device after, install the fire curtain in its both sides simultaneously, when the cable joint node is on a fire, hot aerosol automatic fire extinguishing device starts the back, and both sides fire curtain expandes, forms a relatively confined compartment around the node that is on a fire, and hot aerosol is diffused in the compartment, isolated air is put out a fire. So design can maintain high concentration steam aerosol in local short time, and fire control effect is good.
Preferably, the branch ropes and the main ropes are nylon ropes, and the hot melt adhesive is an EVA hot melt adhesive. By the design, the installation is convenient.
As the optimization, the fire-proof curtain is provided with a fixing rod along the upper edge, the fixing rod is provided with a plurality of through holes, fixing bolts are arranged in the through holes, the scroll consists of a section of circular tube, a longitudinal joint is arranged on the circular tube, the lower edge of the fire-proof curtain is provided with a thickening flanging, and the thickening flanging is positioned in the circular tube and clamped on the longitudinal joint. So design, fire prevention curtain, dead lever and spool can cut as required, tailor simple to operate.
The invention relates to a method for installing a curtain type isolation hot aerosol automatic fire extinguishing system in a cable trough, which comprises the following steps:
(1) according to the transverse width and depth of the cable groove, selecting or cutting a fire curtain, a fixed rod and a scroll with proper sizes, so that the width of the fire curtain and the length of the scroll are smaller than the width of the cable groove, and the fire curtain can be unfolded automatically under the action of gravity; (2) installing the hot aerosol automatic fire extinguishing device above or obliquely above a cable joint node of the matched cable trough, enabling a nozzle of the hot aerosol automatic fire extinguishing device to point to the cable joint node, and respectively guiding two main ropes on the hot aerosol automatic fire extinguishing device to two sides; (3) respectively placing two fire curtains on two sides of the hot aerosol automatic fire extinguishing device, and vertically fixing a fixing rod of each fire curtain on a cable trough; (4) rolling up two fire-proof curtains respectively, and holding with a branch rope, the middle section of two branch ropes is tied tightly on the adjacent main ropes respectively, and tensioning, and (5) finally covering a cover plate with a cable groove.
The invention discloses a method for extinguishing a cable in a cable duct by using a curtain type isolation hot aerosol automatic fire extinguishing system, which comprises the following steps:
(1) after an initiator of the hot aerosol automatic fire extinguishing device senses a fire, an aerosol generator is automatically started to produce hot aerosol, the hot aerosol is sprayed out from a spray opening, meanwhile, the hot aerosol is heated to melt, under the action of gravity of a reel and a fireproof curtain main body, a main rope is separated from the hot aerosol, reels on two sides descend, two fireproof curtains are unfolded, a relatively closed compartment is formed around a fire point, and the hot aerosol is diffused in the compartment to insulate air for fire extinguishing;
(2) a cable monitoring circuit or monitoring personnel for the cable trough senses the abnormal change of the current or the temperature of the corresponding cable and cuts off the power supply of the corresponding cable;
(3) after the compartment is naturally cooled, the staff checks and maintains the corresponding cable, and the new aerosol automatic fire extinguishing device is replaced.
The curtain type isolation hot aerosol automatic fire extinguishing system can locally gather high-density hot aerosol, has good fire extinguishing effect and convenient installation and use, and is particularly suitable for being installed and used in a cable trough.
Drawings
The curtain type isolation hot aerosol automatic fire extinguishing system and the installation method and the fire extinguishing method thereof in the cable trough are further explained by combining the attached drawings as follows:
FIG. 1 is a schematic view of the installation of the present curtain-type insulated hot aerosol automatic fire extinguishing system in a cable trough (for clarity, the middle of the cable trough is broken);
FIG. 2 is a schematic cross-sectional view (cut along a vertical plane passing through the axis) of a hot aerosol self-extinguishing device;
fig. 3 is a schematic perspective view of the fixing rod, the fire-proof curtain, the thickening flange and the reel.
In the figure: the fire-extinguishing device comprises a hot aerosol automatic fire extinguishing device 1, a coolant 2, an aerosol generating agent 3, an initiator 4, a fire curtain 5, a control rope 6, a reel 7, a branch rope 8, a main rope 9, a cable trough 10, an external cylinder 11, a bottom plate 12, an aerosol generator 13, a top plate 14, a nozzle 15, a container cover 16, an internal cylinder 17, a communication hole 18, a hot melt adhesive 19, an annular flanging 20, a longitudinal seam 21, a thickening flanging 22, a fixing rod 23, a cover plate 24 and a fixed pulley 25.
Detailed Description
The first implementation mode comprises the following steps: as shown in fig. 1 and 2, the curtain type isolation hot aerosol automatic fire extinguishing system of the invention comprises a plurality of hot aerosol automatic fire extinguishing devices 1, each hot aerosol automatic fire extinguishing device comprises an outer cylinder 11, a bottom plate 12, an aerosol generator 13 and a coolant 2, the outer cylinder 11 is cylindrical, the top of the outer cylinder is provided with a top plate 14, the top plate 14 is provided with a plurality of nozzles 15, the outer cylinder 11 and the aerosol generator 13 are assembled and fixed on the bottom plate 12, the aerosol generator 13 comprises a container cover 16, an aerosol generating agent 3 and an initiator 4 which are arranged in the container cover 16, the initiator 4 is used for starting the aerosol generator 13 to produce hot aerosol, an inner cylinder 17 is further arranged between the aerosol generator 13 and the outer cylinder 11, the upper edge of the inner cylinder 17 is connected with the top plate 14, the lower edge of the inner cylinder 17 is provided with an annular flanging 20 and is connected with the outer wall of the container cover 16 through the annular flanging 20, a cooling bin is formed between the bottom plate 12, the top plate 14 and the inner cylinder 17 and the outer cylinder 11, the coolant 2 is filled in the cooling bin, and a plurality of communication holes 18 are formed on the wall of the inner cylinder 17 between the annular flanging 20 and the bottom plate 12.
Every hot aerosol automatic fire extinguishing device is furnished with two fire prevention curtains 5, and every fire prevention curtain 5 is furnished with a control rope 6, and fire prevention curtain 5 is squarely, and fire prevention curtain 5 is down along being equipped with spool 7, and fire prevention curtain 5's main part is rolled up on spool 7, control rope 6 is including a rope 8 and main rope 9, and the connection of the both ends of a rope 8 is fixed on fire prevention curtain 5's last along middle part or fire prevention curtain 5's well upper portion, arbitrary spout 15, intercommunicating pore 18 are passed through to the one end of main rope 9, get into inside aerosol generator 13, bond to fix on bottom plate 12 through hot melt adhesive 19, main rope 9 other end tightly is in the middle section of a rope 8, draws into V word rope with a rope 8, and V word rope is walked around and is held up and is rolled up fire prevention curtain 5 on spool 7, the melting point of hot melt adhesive 19 is less than the temperature of the hot aerosol that aerosol generator 13 produced, fire prevention curtain 5 is made by fire prevention cloth.
The branch ropes 8 and the main ropes 9 are nylon ropes, and the hot melt adhesive is an EVA hot melt adhesive.
As shown in fig. 2, a fixed pulley 25 is preferably provided near the spout 15 through which the main rope 9 passes and on the annular flange 20 through which the main rope 9 passes, and the main rope 9 passes over the fixed pulley 25.
As shown in fig. 3, the upper edge of the fire-proof curtain 5 is provided with a fixing rod 23, the fixing rod 23 is provided with a plurality of through holes, fixing bolts (not shown in the figure) are arranged in the through holes, the reel 7 is composed of a section of round pipe, a longitudinal joint 21 is arranged on the round pipe, the lower edge of the fire-proof curtain 5 is provided with a thickening flange 22, and the thickening flange 22 is positioned in the round pipe and clamped on the longitudinal joint 21.
The method for installing the curtain type isolation hot aerosol automatic fire extinguishing system in the distribution cable trough comprises the following steps:
(1) according to the transverse width and the depth of the matched cable groove 10, the fire-proof curtain 5, the fixed rod 23 and the scroll 7 with proper sizes are selected or cut, so that the width of the fire-proof curtain 5 and the length of the scroll 7 are smaller than the width of the cable groove 10, and the fire-proof curtain 5 can be unfolded automatically under the action of gravity;
(2) the hot aerosol automatic fire extinguishing device 1 is arranged above or obliquely above a cable joint node (not shown in the figure) of the cable trough 10, a nozzle 15 of the hot aerosol automatic fire extinguishing device points to the cable joint node, and two main ropes 9 on the hot aerosol automatic fire extinguishing device 1 are respectively led to two sides;
(3) respectively placing two fire curtains 5 on two sides of the hot aerosol automatic fire extinguishing device 1, and vertically fixing a fixing rod 23 of each fire curtain 5 on the matched cable groove 10;
(4) the two fire-proof curtains 5 are respectively rolled up and respectively supported by the branch ropes 8, the middle sections of the two branch ropes 8 are respectively tightly tied on the adjacent main ropes 9 and are tensioned,
(5) finally, cover plate 24 of the cable trough 10 is covered.
The method for extinguishing the fire of the cable in the cable duct by using the curtain type isolation hot aerosol automatic fire extinguishing system comprises the following steps:
(1) after an initiator of the hot aerosol automatic fire extinguishing device senses a fire, the aerosol generator 13 is automatically started to produce hot aerosol, the hot aerosol is sprayed out from the spraying port 15, meanwhile, the hot melt adhesive 19 is heated and melted, under the action of the gravity of the reel 7 and the fire-proof curtain 5 main body, the main rope 9 is separated from the hot melt adhesive 19, the reel 7 at the two sides are descended, the two fire-proof curtains 5 are unfolded, a relatively closed compartment is formed around a fire point, and the hot aerosol is diffused in the compartment to insulate air for fire extinguishing;
(2) a cable monitoring circuit or a monitoring person for the cable tray 10 senses an abnormal change in current or temperature of a corresponding cable (not shown), and cuts off power supply to the corresponding cable (not shown);
(3) after the interior of the compartment is naturally cooled, the staff inspects and maintains the corresponding cable and replaces the new hot aerosol automatic fire extinguishing device 1.
Claims (4)
1. The utility model provides a curtain formula isolation aerosol automatic fire extinguishing system, including a plurality of aerosol automatic fire extinguishing devices, every aerosol automatic fire extinguishing device includes the urceolus, the bottom plate, aerosol generator and coolant, the urceolus is the cylinder, its top is equipped with the roof, it has a plurality of spout to open on the roof, urceolus and aerosol generator assembly are fixed on the bottom plate, aerosol generator includes a container cover, aerosol generator and initiator of setting in this container cover, the initiator is used for starting aerosol generator production aerosol, still be equipped with an inner tube between aerosol generator and the urceolus, it links to each other with the roof to follow on this inner tube, the inner tube is followed down and is equipped with annular turn-ups, and link to each other with container cover outer wall through annular turn-ups, the bottom plate, roof and inner tube, form the cooling chamber between the urceolus, the coolant is filled in the cooling chamber, it has a plurality of intercommunicating pores to open on the inner tube wall between annular turn-ups and the bottom plate, its characterized in that: every thermosol automatic fire extinguishing device is furnished with two fire prevention curtains, and every fire prevention curtain is furnished with a control rope, and the fire prevention curtain is squarely, and the fire prevention curtain is down along being equipped with the spool, and the main part book of fire prevention curtain is in on the spool, the control rope includes branch rope and main rope, and the both ends connection of branch rope is fixed on fire prevention curtain along middle part or fire prevention curtain's well upper portion, arbitrary spout, intercommunicating pore are passed through to the one end of main rope, get into inside the aerosol generator, bond fixedly on the bottom plate through the hot melt adhesive, main rope other end fastening is on the middle section of branch rope, with a rope pull V word rope, V word rope is walked around, and hold the fire prevention curtain of rolling on the spool, the fusing point of hot melt adhesive is less than the thermosol's of aerosol generator production temperature, the fire prevention curtain is made by fire prevention cloth, fire prevention cloth chooses for use the stone, the fire prevention cloth is equipped with a dead lever on the fire prevention curtain, open a plurality of through-holes on this dead lever, all be equipped with fixing bolt in the through-hole, the spool comprises a section pipe, open a fire prevention seam on this pipe, the fire prevention curtain is along being equipped with a longitudinal joint, the turn-up edge under the thickening cotton, the turn-up edge is located on the cotton cloth, the turn-up of this thickening cotton, the turn-up seam is located in the cotton.
2. Curtain-type insulated hot aerosol automatic fire extinguishing system according to claim 1, characterized in that: the branch ropes and the main ropes are nylon ropes, and the hot melt adhesive is EVA hot melt adhesive.
3. A method for installing a curtain type insulating hot aerosol automatic fire extinguishing system according to claim 1 in a cable trough, comprising the steps of:
(1) according to the transverse width and depth of the cable groove, selecting or cutting a fire-proof curtain, a fixed rod and a scroll with proper size, so that the width of the fire-proof curtain and the length of the scroll are both smaller than the width of the cable groove, and the fire-proof curtain can be unfolded automatically under the action of gravity;
(2) installing the hot aerosol automatic fire extinguishing device above or obliquely above a cable joint node of the cable trough for matching, enabling a nozzle of the hot aerosol automatic fire extinguishing device to point to the cable joint node, and respectively guiding two main ropes on the hot aerosol automatic fire extinguishing device to two sides;
(3) respectively placing two fire curtains on two sides of the hot aerosol automatic fire extinguishing device, and vertically fixing a fixing rod of each fire curtain on a cable trough;
(4) rolling up the two fire-proof curtains respectively, and supporting the two fire-proof curtains by using the supporting ropes respectively, wherein the middle sections of the two supporting ropes are tightly tied on the adjacent main ropes respectively and are tightened,
(5) and finally, covering a cover plate matched with the cable groove.
4. A method for extinguishing a fire in a cable trough using a curtain type insulating hot aerosol automatic fire extinguishing system according to claim 1, comprising the steps of:
(1) after an initiator of the hot aerosol automatic fire extinguishing device senses a fire, the aerosol generator is automatically started to produce hot aerosol, the hot aerosol is sprayed out from a spray port, meanwhile, the hot melt adhesive is heated and melted, under the action of the gravity of the scroll and the fireproof curtain main body, the main rope is separated from the hot melt adhesive, the scroll shafts on two sides descend, the two fireproof curtains are unfolded, a relatively closed compartment is formed around a fire point, and the hot aerosol diffuses in the compartment and is isolated from air to extinguish the fire;
(2) a cable monitoring circuit or monitoring personnel for the cable trough senses the abnormal change of the current or the temperature of the corresponding cable and cuts off the power supply of the corresponding cable;
(3) after the compartment is naturally cooled, the staff checks and maintains the corresponding cable, and the new aerosol automatic fire extinguishing device is replaced.
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| CN201810517541.XA CN108478962B (en) | 2018-05-25 | 2018-05-25 | Curtain type isolation hot aerosol automatic fire extinguishing system, installation method of curtain type isolation hot aerosol automatic fire extinguishing system in cable trough and fire extinguishing method |
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| CN201810517541.XA CN108478962B (en) | 2018-05-25 | 2018-05-25 | Curtain type isolation hot aerosol automatic fire extinguishing system, installation method of curtain type isolation hot aerosol automatic fire extinguishing system in cable trough and fire extinguishing method |
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| CN116641753B (en) * | 2023-06-06 | 2023-11-24 | 山东宝盖新材料科技股份有限公司 | Fireproof A-level tunnel cover plate |
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| CN108478962A (en) | 2018-09-04 |
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