AU2020452936B2 - Non-electric and non-pressure-containing-type fire extinguishing system - Google Patents
Non-electric and non-pressure-containing-type fire extinguishing system Download PDFInfo
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- AU2020452936B2 AU2020452936B2 AU2020452936A AU2020452936A AU2020452936B2 AU 2020452936 B2 AU2020452936 B2 AU 2020452936B2 AU 2020452936 A AU2020452936 A AU 2020452936A AU 2020452936 A AU2020452936 A AU 2020452936A AU 2020452936 B2 AU2020452936 B2 AU 2020452936B2
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- fire extinguishing
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- temperature sensing
- firing pin
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/10—Containers destroyed or opened by flames or heat
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/14—Releasing means, e.g. electrically released heat-sensitive with frangible vessels
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/44—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device only the sensor being in the danger zone
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
A non-electric and non-pressure-containing-type automatic fire extinguishing system, which relates to the technical field of fire protection. The system comprises a temperature sensing gas source (1), a pneumatic pipeline (2), a pneumatic starter (3), a gas generator (4), a fire extinguishing agent storage tank (5) and a spraying pipeline (6). The temperature sensing gas source (1), the pneumatic pipeline (2), the pneumatic starter (3) and the gas generator (4) are connected in sequence; the gas generator (4) is in communication with a first opening part of the fire extinguishing agent storage tank (5), and the spraying pipeline (6) is in communication with a second opening part of the fire extinguishing agent storage tank (5); the temperature sensing gas source (1) is used for sensing ambient temperature and generating gas; the pneumatic pipeline (2) is used for delivering the gas generated by the temperature sensing gas source (1) to the pneumatic starter (3) and triggering the pneumatic starter (3) to move by means of the pressure of the delivered gas; the pneumatic starter (3) is used for igniting the gas generator (4) during action; and the gas generator (4) is used for producing gas to drive fire extinguishing media in the fire extinguishing agent storage tank (5) to be ejected out of the spraying pipeline (6).
Description
TECHNICAL FIELD The invention belongs to the field of fire protection, and particularly relates to a non-electric, automatic fire extinguishing system without pressure storage.
BACKGROUND The feedback phase of the existing fire extinguishing systems in the field of fire protection has a greater need for power supply support, such as ultraviolet, infrared, smoke sensors, etc., and the fire extinguishing mediums are mostly stored in pressure-storing cylinders for fire extinguishing agent, such as heptafluoropropane gas cylinders, gas cylinders for inert gas, etc., however, a large number of use cases has revealed some of the problems with existing fire extinguishing systems, such as: (1) The electrical feedback system fails in the case of a power failure caused by a burnout of power supply facilities due to fire. (2) A pressure drop exists in the heptafluoropropane cylinder of a heptafluoropropane fire extinguishing system after long-term storage, hence, a maintenance is required after about 5 years, and moreover, the high-pressure gas cylinder is a source of danger per se. (3) The fire extinguishing system that utilizes the built-in or external carbon dioxide gas cylinder as the propulsion source for spraying fire extinguishing agent cannot work due to the phase change under the low temperature conditions in winter, and thus it is not suitable for use in low temperature outdoor environments. (4) There is concern about the insufficient pressure or the water leakage in pipes of a spray pipe network system, which is used in the underground car park and activated by temperature sensing glass bulbs. (5) A fire extinguishing system where fusible alloys, such as Wood's alloys,
1/22 are utilized as temperature sensing elements and fire extinguishers are activated by using a spring-rope activation method, such as an automatic fire extinguishing system for kitchen, has the problem of slow response to fire, in addition, a temperature sensing element and a fire extinguishing agent tank should not be too far apart due to the limited spring elasticity and rope length, resulting in a very limited coverage of the fire extinguishing system.
SUMMARY OF THE INVENTION The purpose of the present invention is to provide a non-electric fire extinguishing system without pressure storage in view of the technical deficiencies in the prior art, it gets rid of the technical defects in terms of the yoke of power supply and long-distance feedback signal transmission, it may be used in low temperature outdoor environments and may be maintenance-free over a long period of time, and thus it may be widely used for fire extinguishing in warehouses, electrical facilities, ships, engineering vehicles, etc. The technical solution of the present invention is to provide a non-electric, automatic fire extinguishing system without pressure storage, which comprises a temperature sensing gas source, a pneumatic pipe, a pneumatic starter, a gas generator, a fire extinguishing agent tank and a spray pipe; the temperature sensing gas source, the pneumatic pipe, the pneumatic starter, and the gas generator are connected in sequence; the fire extinguishing agent tank comprises a first port and a second port, and the gas generator is coupled with the first port of the fire extinguishing agent tank, the spray pipe is coupled with the second port of the fire extinguishing agent tank; the temperature sensing gas source is configured to sense ambient temperature and generate gas; the pneumatic pipe is configured to convey the gas generated by the temperature sensing gas source to the pneumatic starter and trigger an action of the pneumatic starter as a result of the conveyed gas pressure; the pneumatic starter is configured to ignite the gas generator upon the action; the gas generator is configured to generate gas for driving the fire extinguishing medium in the fire extinguishing agent tank to be sprayed out via the spray pipe.
Furthermore, the temperature sensing gas source described above comprises a temperature sensing glass bulb for fire protection, a first spring, a first firing pin, a first stab primer, a first composite solid propellant and a coupling mechanism; the first composite solid propellant is encapsulated in a housing, the first composite solid propellant at the bottom of the housing is connected to one end of the first stab primer to be ignited by the first stab primer, and an opening at the top of the housing is provided for coupling with the pneumatic pipe; the first firing pin is positioned at the other end of the first stab primer and located at a predetermined distance from the bottom end of the first stab primer, and the first firing pin hits against the first stab primer through a stroke movement, causing the first stab primer to generate flames, the first stab primer ignites the first composite solid propellant in the housing upon a hit by the first firing pin; the coupling mechanism connects the first firing pin, the temperature sensing glass bulb for fire protection and the first spring with each other, and the coupling mechanism causes, upon connection with the temperature sensing glass bulb for fire protection in the direction of connection with the temperature sensing glass bulb for fire protection, the first spring to create a compressive force, and upon the burst of the temperature sensing glass bulb for fire protection due to heating, the pressure in the first spring is released, the coupling mechanism is thus driven to move, so that the coupling mechanism drives the first firing pin connected to it to move, exerting a hit force on the first stab primer. Preferably, the specific solution of the temperature sensing gas source of the present invention may be implemented by the following approaches: further comprising a second housing and an end cap; the coupling mechanism is a cross-shaped connecting structure formed by a cross bar and a vertical bar; the first firing pin comprises a top end and a connecting base, and the top end located in proximity to the first stab primer; one end of the cross bar passes perpendicularly through the connecting base of the first firing pin, and the other end passes perpendicularly through the center of the vertical bar and is fixedly connected to the vertical bar to form a connecting portion; the second housing is configured to connect the vertical bar of the coupling mechanism, the first spring and the temperature sensing glass bulb for fire protection in a same direction parallel to the direction of the first firing pin; one end of the vertical bar pointing in the same direction as the firing pin is connected to the temperature sensing glass bulb for fire protection, and the other end of the temperature sensing glass bulb for fire protection is fixed to the second housing; the first spring is sleeved on the other end of the vertical bar, and the other end of the second housing has a through hole, to which the end cap is connected and fixed from the outside of the second housing for attaching the first spring to the vertical bar between the second housing and the connecting portion; once the vertical bar of the coupling mechanism, the first spring and the temperature sensing glass bulb for fire protection are mounted in the second housing, the two ends of the second housing are connected to the temperature sensing glass bulb for fire protection and the end cap, respectively, and the first spring is in a compressed state; the height, by which the first spring is compressed, is larger than the predetermined distance between the hit end of the first firing pin and the hit end of the first stab primer. Moreover, the spring constant of the spring described above is 2-15N/mm, and the height, by which the spring is compressed, is 5-20mm; the nominal activation temperature of the temperature sensing glass bulb for fire protection is any one of 93°C, 141C or 182°C. Besides, the first composite solid propellant described above comprises an adhesive, a curing agent, an oxidizing agent and a cooling agent; the adhesive is a hydroxyl-terminated polybutadiene and/or a carboxyl-terminated polybutadiene, and its content is 10%-40% by mass; the curing agent is a toluene diisocyanate and/or an isophorone diisocyanate, and its content is 0.5%-5% by mass; the oxidizing agent is an ammonium perchlorate and/or an ammonium nitrate, and its content is 20%-60% by mass; the cooling agent is an azodicarbonamide, and its content is 20%-60% by mass. Furthermore, the pneumatic starter described above comprises a piston, a connecting rod, a second stab primer, a pull-out pin, a second spring, a second stab primer, a second firing pin and a pressing cap; the movable end face of the piston faces the gas outlet of the pneumatic pipe, so as to receive the gas pressure from the pneumatic pipe and move under the impact of the gas pressure; one end of the connecting rod is connected and fixed to the piston, so as to move with the piston, and the other end is connected to the pull-out pin; the pull-out pin is oriented parallel to the movement direction of the piston, one end of the pull-out pin is connected to the connecting rod, and the other end is connected to the second firing pin; the second firing pin comprises a base and a spring sleeve rod on the base, the tip of the firing pin is disposed on the outside of the base, the inside of the base is connected to the spring sleeve rod, and the end portion of the spring sleeve rod away from the base is provided with a cross hole to be connected with the pull-out pin, the outer circumference of the base is larger than the outer circumference of the second spring, and the outer circumference of the spring sleeve rod is smaller than the inner circumference of the second spring; the pressing cap is a hollow structure with openings at both ends, the outer circumference of the opening at one end of the pressing cap is between the outer circumference of the second spring and the outer circumference of the spring sleeve rod, and the outer circumference of the opening at the other end is larger than the outer circumference of the base of the second firing pin and matches the outer circumference of the second stab primer; upon sleeving the second spring on the outside of the spring sleeve rod of the second firing pin, and passing the spring sleeve rod through the hollow portion of the pressing cap to connect its cross hole with the pull-out pin, the second spring is fixed in the pressing cap in a compressed state; the second stab primer is fixed at one end of the pressing cap close to the base of the second firing pin, and the distance from the second stab primer to the tip of the firing pin at the base of the second firing pin is not larger than the height, by which the second spring is compressed; the ignition end of the second stab primer is connected to the gas generator; the distance between the second firing pin and the second stab primer in the direction of the needle tip of the second firing pin is not larger than the height, by which the second spring is compressed; upon the movement of the piston under an impact of gas, the connecting rod moves with it and thus the pull-out pin is pulled out of the cross hole on the spring sleeve rod of the second firing pin, and meanwhile, the compression of the second spring in the pressing cap is released, as a result, the second firing pin hits against the second stab primer, so as to generate gas in the gas generator. Moreover, the cross-sectional area of the piston described above is not less than 4 times of the ventilation cross-sectional area of the pneumatic pipe. Furthermore, the gas generator described above comprises a second composite solid propellant, and the second composite solid propellant comprises an adhesive, a curing agent, an oxidizing agent, a cooling agent and a stabilizer; the adhesive is a polyethylene glycol, a polyethylene adipate or a polycaprolactone, or a combination thereof, and its content is 10%-40% by mass; the curing agent is a toluene diisocyanate and/or an isophorone diisocyanate, and its content is 0.5%-5% by mass; the oxidizing agent is an ammonium perchlorate and/or an ammonium nitrate, and its content is 20%-60% by mass; the cooling agent is an azodicarbonamide and/or a dihydroxyglyoxime, and its content is 20%-60% by mass; the stabilizer is a 2-nitrodiphenylamine and/or a 4-nitroaniline, and its content is 0.5%-5% by mass. Furthermore, the outer diameter of the pneumatic pipe described above is not larger than 6mm, the inner diameter is not larger than 4mm, and the pneumatic pipe is connected to the temperature sensing gas source and/or the pneumatic starter by ferrule compression connection and/or welding. Furthermore, the pneumatic starter described above is disposed on the outside of the first port of the fire extinguishing agent tank, and the gas generator is disposed on the inside of the first port of the fire extinguishing agent tank. Furthermore, the pneumatic starter and the gas generator described above are both disposed on the outside of the first port of the fire extinguishing agent tank, and the port of the gas generator is coupled with the first port of the fire extinguishing agent tank. The principle of the present invention is that the temperature sensing gas source generates a certain pressure of gas after being baked by fire, the gas is then transmitted to the pneumatic starter via the pneumatic pipe and the gas pushes the piston in the pneumatic starter to move, so that the gas generator is activated, and after the chemicals in the gas generator are ignited, a certain pressure of gas is generated to push the fire extinguishing agent to be sprayed out of the fire extinguishing agent tank to fire point via the spray pipe. It can be seen that the gas generated by the temperature sensing gas source is obtained by a chemical reaction of the first composite solid propellant, and the basic composition is nitrogen or carbon dioxide or a combination thereof; the critical temperature for thermal spontaneous combustion of the first composite solid propellant is not lower than 150°C; the gas generated by the gas generator is obtained by a chemical reaction of the second composite solid propellant, and the basic composition is nitrogen, carbon dioxide or water vapor or a combination of more than two of them. The material of the pneumatic pipe is stainless steel, copper or copper alloy or a combination of more than two of them, and it is connected to other components by ferrule compression connection or welding or a combination thereof. The present invention has the following advantages and beneficial effects with reference to the prior art: (1) The entire system does not require power supply, thereby avoiding potential danger of system crash due to a fire-related burnout of the power supply lines; (2) The effective transmission distance of a pneumatic pipe is long, and when needed, it may be easily bent without affecting the transmission of propulsion gas. As little as 5g of gas generating chemicals (gas production rate of 400L/kg) at the end for the temperature sensing gas source may enable a 150m long stainless steel with an inner diameter of 4mm pipe to smoothly activate the pneumatic starter at the other end of the pipe. (3) Maintenance-free over a long period of time. This is due to the fact that both the composite solid propellant in the temperature sensing gas source and the composite solid propellant in the gas generator of the fire extinguishing agent tank may have a service life of over 10 years. The tank body is of a non-pressure storage type and the entire system is not pre-pressurized, so that under normal circumstances, a leakage of the fire extinguishing agent is almost impossible during long-term storage. (4) It may be used in low temperature outdoor environments. The application of particular low temperature resistant chemicals for composite solid propellant and a low temperature resistant fire extinguishing agent allows the system to be used in outdoor environment of -40°C.
DESCRIPTION OF THE DRAWINGS These and/or other aspects and advantages of the present invention will become clearer and be more readily understood from the following detailed description of embodiments of the present invention with reference to the accompanying drawings, wherein:
Fig. 1 is a schematic diagram showing the structural composition of non-electric fire extinguishing system without pressure storage in an embodiment of the present invention;
Wherein: 1-temperature sensing gas source; 2-pneumatic pipe, 3-pneumatic starter, 4-gas generator, 5-fire extinguishing agent tank, 6-spray pipe;
Fig. 2-3 are schematic exterior views of a fire extinguishing agent tank, a pneumatic starter, and a gas generator of the structure for a non-electric fire extinguishing system without pressure storage in the embodiment of the present invention;
Fig. 4-5 are schematic structural diagrams of a temperature sensing gas source in an embodiment of the present invention;
Wherein: 11-temperature sensing glass bulb for fire protection; 12-first spring; 13-first firing pin; 14-first stab primer, 15-first composite solid propellant, 16-coupling mechanism;
Fig. 6-7 are schematic structural diagrams of a pneumatic starter in an embodiment of the present invention; Wherein: 31-piston, 32-connecting rod, 33-pull-out pin, 34-second spring, 35-second stab primer, 36-second firing pin, 37-pressing cap.
DETAILED DESCRIPTION In order to provide a better understanding of the present invention for those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the specific implementation.
Embodiment 1 A non-electric, automatic fire extinguishing system without pressure storage, the overall structure of which is shown in Fig. 1, comprises a temperature sensing gas source 1, a pneumatic pipe 2, a pneumatic starter 3, a gas generator 4, a fire extinguishing agent tank 5 and a spray pipe 6; it can be seen that the temperature sensing gas source 1, the pneumatic pipe 2, the pneumatic starter 3, and the gas generator 4 are connected in sequence; the fire extinguishing agent tank 5 comprises a first port and a second port; the gas generator 4 is coupled with the first port of the fire extinguishing agent tank 5, and the spray pipe 6 is coupled with the second port of the fire extinguishing agent tank 5; the general functioning of various parts is that: the temperature sensing gas source 1 is configured to sense ambient temperature and generate gas; the pneumatic pipe 2 is configured to convey the gas generated by the temperature sensing gas source 1 to the pneumatic starter 3 and trigger an action of the pneumatic starter 3 as a result of the conveyed gas pressure; the pneumatic starter 3 is configured to ignite the gas generator 4 upon the action; the gas generator 4 is configured to generate gas for driving the fire extinguishing medium in the fire extinguishing agent tank 5 to be sprayed out via the spray pipe 6. Fig. 2 and 3 show the exterior views of the fire extinguishing agent tank 5 and the gas generator upon connecting with the fire extinguishing agent tank 5.
Various parts are preferably devised and structured as follows: The structure of temperature sensing gas source 1 is shown in Fig. 4, comprising a temperature sensing glass bulb for fire protection 11, first spring 12, first firing pin 13, first stab primer 14, first composite solid propellant 15, and coupling mechanism 16; the first composite solid propellant 15 is encapsulated in a housing, the first composite solid propellant 15 at the bottom of the housing is connected to one end of the first stab primer 14 to be ignited by the first stab primer 14, and an opening at the top of the housing is provided for coupling with the pneumatic pipe 2; the first firing pin 13 is positioned at the other end of the first stab primer 14 and located at a predetermined distance from the bottom end of the first stab primer 14, and the first firing pin 13 hits against the first stab primer 14 through a stroke movement, causing the first stab primer 14 to generate flames; the first stab primer 14 ignites the first composite solid propellant 15 in the housing upon a hit by the first firing pin 13; the coupling mechanism 16 connects the first firing pin 13, the temperature sensing glass bulb for fire protection 11 and the first spring 12 with each other, and the coupling mechanism 16 causes, upon connection with the temperature sensing glass bulb for fire protection 11 in the direction of connection with the temperature sensing glass bulb for fire protection 11, the first spring 12 to create a compressive force, and upon the burst of the temperature sensing glass bulb for fire protection 11 due to heating, the pressure in the first spring 12 is released, the coupling mechanism 16 is thus driven to move, so that the coupling mechanism 16 drives the first firing pin 13 connected to it to move, exerting a hit force on the first stab primer 14. It can be seen that said "the coupling mechanism 16 causes, upon connection with the temperature sensing glass bulb for fire protection 11 in the direction of connection with the temperature sensing glass bulb for fire protection 11, the first spring 12 to create a compressive force, and upon the burst of the temperature sensing glass bulb for fire protection 11 due to heating, the pressure in the first spring 12 is released" is implemented by the following more preferred solution: further comprising a second housing and an end cap; the coupling mechanism is a cross-shaped connecting structure formed by a cross bar and a vertical bar; the first firing pin comprises a top end and a connecting base, and the top end located in proximity to the first stab primer; one end of the cross bar passes perpendicularly through the connecting base of the first firing pin, and the other end passes perpendicularly through the center of the vertical bar and is fixedly connected to the vertical bar to form a connecting portion; the second housing is configured to connect the vertical bar of the coupling mechanism, the first spring and the temperature sensing glass bulb for fire protection in a same direction parallel to the direction of the first firing pin; one end of the vertical bar pointing in the same direction as the firing pin is connected to the temperature sensing glass bulb for fire protection, and the other end of the temperature sensing glass bulb for fire protection is fixed to the second housing; the first spring is sleeved on the other end of the vertical bar, and the other end of the second housing has a through hole, to which the end cap is connected and fixed from the outside of the second housing for attaching the first spring to the vertical bar between the second housing and the connecting portion; once the vertical bar of the coupling mechanism, the first spring and the temperature sensing glass bulb for fire protection are mounted in the second housing, the two ends of the second housing are connected to the temperature sensing glass bulb for fire protection and the end cap, respectively, and the first spring is in a compressed state; the height, by which the first spring is compressed, is larger than the predetermined distance between the hit end of the first firing pin and the hit end of the first stab primer. The exterior shape of the temperature sensing gas source formed by the structures described above as a whole is shown in Fig. 5. Wherein, the spring constant of the spring 12 is 2-15N/mm, and the height, by which the spring is compressed, is 5-20mm in order to ensure an effective force for releasing compression; the nominal activation temperature of the temperature sensing glass bulb for fire protection 11 is any one of 93C, 1410 C or 1820 C. Wherein, the first composite solid propellant 15 comprises an adhesive, a curing agent, an oxidizing agent and a cooling agent; the adhesive is a hydroxyl-terminated polybutadiene and/or a carboxyl-terminated polybutadiene, and its content is 10%-40% by mass; the curing agent is a toluene diisocyanate and/or an isophorone diisocyanate, and its content is 0.5%-5% by mass; the oxidizing agent is an ammonium perchlorate and/or an ammonium nitrate, and its the content is 20%-60% by mass; the cooling agent is an azodicarbonamide, and its content is 20%-60% by mass. The structure of the pneumatic starter 3 is shown in Fig. 6, comprising a piston 31, a connecting rod 32, a pull-out pin 33, a second spring 34, a second stab primer 35, a second firing pin 36 and a pressing cap 37; the movable end face of the piston 31 faces the gas outlet of the pneumatic pipe 2, so as to receive the gas pressure from the pneumatic pipe 2 and move under the impact of the gas pressure; one end of the connecting rod 32 is connected and fixed to the piston, so as to move with the piston, and the other end is connected to the pull-out pin 33; the pull-out pin 33 is oriented parallel to the movement direction of the piston 31, one end of the pull-out pin is connected to the connecting rod 32, and the other end is connected to the second firing pin 36; the second firing pin 36 comprises a base and a spring sleeve rod on the base, the tip of the firing pin is disposed on the outside of the base, the inside of the base is connected to the spring sleeve rod, and the end portion of the spring sleeve rod away from the base is provided with a cross hole to be connected with the pull-out pin 33, the outer circumference of the base is larger than the outer circumference of the second spring 34, and the outer circumference of the spring sleeve rod is smaller than the inner circumference of the second spring 34; the pressing cap 37 is a hollow structure with openings at both ends, the outer circumference of the opening at one end of the pressing cap is between the outer circumference of the second spring 34 and the outer circumference of the spring sleeve rod, and the outer circumference of the opening at the other end is larger than the outer circumference of the base of the second firing pin 36 and matches the outer circumference of the second stab primer 35; upon sleeving the second spring 34 on the outside of the spring sleeve rod of the second firing pin 36, and passing the spring sleeve rod through the hollow portion of the pressing cap 37 to connect its cross hole with the pull-out pin 33, the second spring 34 is fixed in the pressing cap 37 in a compressed state; the second stab primer 35 is fixed at one end of the pressing cap 37 close to the base of the second firing pin 36, and the distance from the second stab primer to the tip of the firing pin at the base of the second firing pin 36 is not larger than the height, by which the second spring 34 is compressed; the ignition end of the second stab primer 35 is connected to the gas generator 4; upon the movement of the piston 31 under an impact of gas, the connecting rod 32 moves with it and thus the pull-out pin 33 is pulled out of the cross hole on the spring sleeve rod of the second firing pin 36, and meanwhile, the compression of the second spring 34 in the pressing cap 37 is released, as a result, the second firing pin 36 hits against the second stab primer 35, so as to activate the gas generator 4 and generate gas in the gas generator 4. The exterior shape of the pneumatic starter 3 formed by the components described above is shown in Fig. 7. Wherein, the cross-sectional area of the piston 31 is not less than 4 times of the ventilation cross-sectional area of the pneumatic pipe 2. Wherein, the gas generator 4 comprises a second composite solid propellant, and the second composite solid propellant comprises an adhesive, a curing agent, an oxidizing agent, a cooling agent and a stabilizer; the adhesiveis a polyethylene glycol, polyethylene adipate or a polycaprolactone, or a combination thereof, its the content is 10%-40% by mass; the curing agent is a toluene diisocyanate and/or an isophorone diisocyanate, and its content is 0.5%-5% by mass; the oxidizing agent is an ammonium perchlorate and/or an ammonium nitrate, and its content is 20%-60% by mass; the cooling agent is an azodicarbonamide and/or a dihydroxyglyoxime, and its content is 20%-60% by mass; the stabilizer is a 2-nitrodiphenylamine and/or a 4-nitroaniline, and its content is 0.5%-5% by mass. the outer diameter of the pneumatic pipe 2 is not larger than 6mm, the inner diameter is not larger than 4mm, and the pneumatic pipe 2 is connected to the temperature sensing gas source 1 and/or the pneumatic starter 3 by ferrule compression connection and/or welding. There are two preferred arrangement options for the gas generator 4: the pneumatic starter 3 is disposed on the outside of the first port of the fire extinguishing agent tank 5, and the gas generator 4 is disposed on the inside of the first port of the fire extinguishing agent tank 5; alternatively, the pneumatic starter 3 and the gas generator 4 are both disposed on the outside of the first port of the fire extinguishing agent tank 5, and the port of the gas generator 4 is coupled with the first port of the fire extinguishing agent tank 5. For example, in case the temperature sensing glass bulb for fire protection 11 with an activation temperature of 141°C is selected, the temperature sensing glass bulb for fire protection 11 in the temperature sensing gas source 1 bursts after being baked to 141°C, causing the spring 12 to drive the first firing pin 13 to hit against the first stab primer 14, and then the first stab primer 14 outputs flames and ignites the first composite gas generating agent 15 in the temperature sensing gas source 1, thereby generating a certain pressure of gas, which then flows into the pneumatic pipe 2 and consequently, flows to the pneumatic starter 3, the gas conveyed through the pneumatic pipe 2 pushes the piston 31 in the pneumatic starter 3 to move, so that the piston 31 drives the connecting rod 32 to pull out the pull-out pin 33 and the second spring 34 releases the compressive force that drives the tip of the second firing pin 36 to hit against the second stab primer 35, and thus the second stab primer 35 outputs flames to the gas generator 4; the gas generator 4 generates a large amount of gas to pressurize the fire extinguishing agent in the fire extinguishing agent tank 5, and once the pressure in the fire extinguishing agent tank 5 exceeds the set pressure, the fire extinguishing agent is sprayed out for quenching fire at the fire point via the spray pipe 6.
The performance parameters of some components of a non-electric, automatic fire extinguishing system without pressure storage in this embodiment are shown in Table 1.
Table 1 The performance parameters of the components of a non-electric, automatic fire extinguishing system without pressure storage in this embodiment Components in the system Technical data Outer diameter 6mm, inner diameter 4mm, 304 stainless steel, ferrule compression connection, total length of about 12m Outer diameter 12mm, inner diameter Spray pipe 10mm, total pipe length of about 17m, equipped with 15 D1.5 nozzles Fire extinguishing medium Perfluorohexanone Capacity of fire extinguishing agent/L 25 Continuous spray time/s 50±5 Piston cross-sectional diameter/mm 19.0 The weight of the gas generating chemicals in the temperature sensing 4.40 gas source/g Measured peak pressure at the end of the pneumatic pipe/kPa 268.9 (relative pressure) The thrust of the pneumatic line on the 75 piston/N The minimum temperature for the -40 normal operation of the system/°C Maintenance-freeperiod/year 15
The embodiments described above are only examples for the implementation of present invention and are not intended to be construed in a limiting sense, and any other forms are possible. Various embodiments of the present invention have been described above, and the foregoing descriptions are exemplary, non-exhaustive, and are not limited to the disclosed embodiments. Various modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the illustrated embodiments. Therefore, the protection scope of the present invention is to be determined entirely by the protection scope of the claims.
Claims (9)
1. A non-electric, automatic fire extinguishing system without pressure storage characterized by comprising a temperature sensing gas source (1), a
pneumatic pipe (2), a pneumatic starter (3), a gas generator (4), a fire
extinguishing agent tank (5) and a spray pipe (6);
the temperature sensing gas source (1), the pneumatic pipe (2), the
pneumatic starter (3), and the gas generator (4) are connected in sequence;
the fire extinguishing agent tank (5) comprises a first port and a second
port; the gas generator (4) is coupled with the first port of the fire extinguishing
agent tank (5), and the spray pipe (6) is coupled with the second port of the fire
extinguishing agent tank (5);
the temperature sensing gas source (1) is configured to sense ambient
temperature and generate gas;
the pneumatic pipe (2) is configured to convey the gas generated by the
temperature sensing gas source (1) to the pneumatic starter (3) and trigger an
action of the pneumatic starter (3) as a result of the conveyed gas pressure;
the pneumatic starter (3) is configured to ignite the gas generator (4) upon
the action;
the gas generator (4) is configured to generate gas for driving the fire
extinguishing agent in the fire extinguishing agent tank (5) to be sprayed out
via the spray pipe (6); the temperature sensing gas source (1) comprises a temperature sensing glass bulb for fire protection (11), a first spring (12), a first firing pin (13), a first stab primer (14), a first composite solid propellant (15) and a coupling mechanism (16); the first composite solid propellant (15) is encapsulated in a housing, and the first composite solid propellant (15) at the bottom of the housing is connected to one end of the first stab primer (14) to be ignited by the first stab primer (14), and an opening at the top of the housing is provided for coupling with the pneumatic pipe (2); the first firing pin (13) is positioned at the other end of the first stab primer (14) and located at a predetermined distance from the bottom end of the first stab primer (14), and the first firing pin (13) hits against the first stab primer (14) through a stroke movement, causing the stab primer (14) to generate flames; the first stab primer (14) ignites the first composite solid propellant (15) in the housing upon a hit by the first firing pin (13); the coupling mechanism (16) connects the first firing pin (13), the temperature sensing glass bulb for fire protection (11) and the first spring (12) with each other, and the coupling mechanism (16) causes, upon connection with the temperature sensing glass bulb for fire protection (11) in the direction of connection with the temperature sensing glass bulb for fire protection (11), the first spring (12) to create a compressive force, and upon the burst of the temperature sensing glass bulb for fire protection (11) due to heating, the pressure in the first spring (12) is released, the coupling mechanism (16) is driven to move, so that the coupling mechanism (16) drives the first firing pin (13) connected to it to move, exerting a hit force on the first stab primer (14).
2. The non-electric, automatic fire extinguishing system without pressure storage according to claim 1, characterized in that: the spring constant of the spring (12) is 2-15N/mm, and the height, by which the spring is compressed, is 5-20mm; the nominal activation temperature of the temperature sensing glass bulb for fire protection (11) is any one of 93°C, 141°C or182°C.
3. The non-electric, automatic fire extinguishing system without pressure storage according to claim 1, characterized in that: the first composite solid propellant (15) comprises an adhesive, a curing agent, an oxidizing agent and a cooling agent; the adhesive is a hydroxyl-terminated polybutadiene and/or a carboxyl-terminated polybutadiene, and its content is 10%-40% by mass; the curing agent is a toluene diisocyanate and/or an isophorone diisocyanate, and its content is 0.5%-5% by mass; the oxidizing agent is an ammonium perchlorate and/or an ammonium nitrate, and its content is 20%-60% by mass; the cooling agent is an azodicarbonamide, and its content is 20%-60% by mass.
4. The non-electric, automatic fire extinguishing system without pressure storage according to claim 1, characterized in that: the pneumatic starter (3) comprises a piston (31), a connecting rod (32), a pull-out pin (33), a second spring (34), a second stab primer (35), a second firing pin (36) and a pressing cap (37); the movable end face of the piston (31) faces the gas outlet of the pneumatic pipe (2), so as to receive the gas pressure from the pneumatic pipe (2) and move under the impact of the gas pressure; one end of the connecting rod (32) is connected and fixed to the piston
(31), so as to move with the piston, and the other end is connected to the
pull-out pin (33);
the pull-out pin (33) is oriented parallel to the movement direction of the
piston (31), one end of the pull-out pin is connected to the connecting rod (32), and the other end is connected to the second firing pin (36);
the second firing pin (36) comprises a base and a spring sleeve rod on the
base, the tip of the firing pin is disposed on the outside of the base, the inside of
the base is connected to the spring sleeve rod, and the end portion of the spring
sleeve rod away from the base is provided with a cross hole to be connected
with the pull-out pin (33), the outer circumference of the base is larger than the
outer circumference of the second spring (35), and the outer circumference of
the spring sleeve rod is smaller than the inner circumference of the second
spring (35);
the pressing cap (37) is a hollow structure with openings at both ends, the
outer circumference of the opening at one end of the pressing cap is between
the outer circumference of the second spring (34) and the outer circumference
of the spring sleeve rod, and the outer circumference of the opening at the other
end is larger than the outer circumference of the base of the second firing pin
(36) and matches the outer circumference of the second stab primer (35);
upon sleeving the second spring (34) on the outside of the spring sleeve
rod of the second firing pin (36), and passing the spring sleeve rod through the
hollow portion of the pressing cap (38) to connect its cross hole with the
pull-out pin (33), the second spring (34) is fixed in the pressing cap (37) in a
compressed state;
the second stab primer (35) is fixed at one end of the pressing cap (37)
close to the base of the second firing pin (36), and the distance from the second
stab primer to the tip of the firing pin at the base of the second firing pin (36) is
not larger than the height, by which the second spring (34) is compressed; the
ignition end of the second stab primer (35) is connected to the gas generator
(4).
5. The non-electric, automatic fire extinguishing system without pressure
storage according to claim 4, characterized in that: the cross-sectional area of
the piston (31) is not less than 4 times of the cross-sectional area of the
pneumatic pipe (2).
6. The non-electric, automatic fire extinguishing system without pressure
storage according to claim 1, characterized in that: the gas generator (4)
comprises a second composite solid propellant, and the second composite solid
propellant comprises an adhesive, a curing agent, an oxidizing agent, a cooling
agent and a stabilizer;
the adhesive is a polyethylene glycol, a polyethylene adipate or a
polycaprolactone, or a combination thereof, and its content is 10%-40% by
mass;
the curing agent is a toluene diisocyanate and/or an isophorone
diisocyanate, and its content is 0.5%-5% by mass;
the oxidizing agent is an ammonium perchlorate and/or an ammonium
nitrate, and its content is 20%-60% by mass;
the cooling agent is an azodicarbonamide and/or a dihydroxyglyoxime, and its content is 20%-60% by mass; the stabilizer is a 2-nitrodiphenylamine and/or a 4-nitroaniline, and its content is 0.5%-5% by mass.
7. The non-electric, automatic fire extinguishing system without pressure
storage according to claim 1, characterized in that: the outer diameter of the
pneumatic pipe (2) is not larger than 6mm, the inner diameter is not larger than
4mm, and the pneumatic pipe (2) is connected to the temperature sensing gas
source (1) and/or the pneumatic starter (3) by ferrule compression connection
and/or welding.
8. The non-electric, automatic fire extinguishing system without pressure
storage according to claim 1, characterized in that: the pneumatic starter (3) is
disposed on the outside of the first port of the fire extinguishing agent tank (5),
and the gas generator (4) is disposed on the inside of the first port of the fire
extinguishing agent tank (5).
9. The non-electric, automatic fire extinguishing system without pressure storage according to claim 1, characterized in that: the pneumatic starter (3) and the gas generator (4) are both disposed on the outside of the first port of the fire extinguishing agent tank (5), and the port of the gas generator (4) is coupled with the first port of the fire extinguishing agent tank (5).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010523986.6 | 2020-06-10 | ||
| CN202010523986.6A CN111632327B (en) | 2020-06-10 | 2020-06-10 | Electroless non-pressure storage type fire extinguishing system |
| PCT/CN2020/120582 WO2021248759A1 (en) | 2020-06-10 | 2020-10-13 | Non-electric and non-pressure-containing-type fire extinguishing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2020452936A1 AU2020452936A1 (en) | 2022-12-01 |
| AU2020452936B2 true AU2020452936B2 (en) | 2024-08-22 |
Family
ID=72322889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020452936A Active AU2020452936B2 (en) | 2020-06-10 | 2020-10-13 | Non-electric and non-pressure-containing-type fire extinguishing system |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN111632327B (en) |
| AU (1) | AU2020452936B2 (en) |
| DE (1) | DE112020006984B4 (en) |
| WO (1) | WO2021248759A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111632327B (en) * | 2020-06-10 | 2022-04-15 | 湖北航天化学技术研究所 | Electroless non-pressure storage type fire extinguishing system |
| CN115054854B (en) * | 2022-06-24 | 2023-07-25 | 湖北航天化学技术研究所 | Mechanical conduction device and mechanical area selection system |
| CN115253142A (en) * | 2022-07-29 | 2022-11-01 | 湖北航天化学技术研究所 | Starter and system with multiple trigger modes |
| CN115607880A (en) * | 2022-11-02 | 2023-01-17 | 湖北航天化学技术研究所 | Double-bag type non-pressure-storage flat automatic fire extinguishing device |
| CN116650868B (en) * | 2023-06-29 | 2025-09-19 | 高新区数瑞通信息技术咨询服务部 | Active electric protection device |
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- 2020-06-10 CN CN202010523986.6A patent/CN111632327B/en active Active
- 2020-10-13 WO PCT/CN2020/120582 patent/WO2021248759A1/en not_active Ceased
- 2020-10-13 DE DE112020006984.2T patent/DE112020006984B4/en active Active
- 2020-10-13 AU AU2020452936A patent/AU2020452936B2/en active Active
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| JP2001198233A (en) * | 2000-01-24 | 2001-07-24 | Nippon Tansan Gas Co Ltd | A device that sends out the filling material in the container together with the high-pressure gas for pushing. |
| EP1782861A1 (en) * | 2005-11-04 | 2007-05-09 | Siemens S.A.S. | Fire extinguishing apparatus and method with gas generator and extinguishing agent |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE112020006984T5 (en) | 2023-01-12 |
| DE112020006984B4 (en) | 2025-11-13 |
| WO2021248759A1 (en) | 2021-12-16 |
| CN111632327A (en) | 2020-09-08 |
| CN111632327B (en) | 2022-04-15 |
| AU2020452936A1 (en) | 2022-12-01 |
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