The present disclosure relates to an inner cylinder of an explosion-venting-type aerosol fire extinguishing device, including a cylinder body (3) and a cylinder cover component (4) arranged on one end of the cylinder body (3), and an explosion-venting device arranged on the cylinder body (3). The explosion-venting device includes a friction layer (11), a connecting rod (12), a guiding unit (13), and a limiting device (14). The connecting rod (12) are connected with the cylinder cover component (4). The friction layer (11) is provided between the connecting rod (12) and the cylinder body (3). The friction layer (11) provides a frictional resistance and a buffering force for the connecting rod (12) when the connecting rod (12) is displaced, under the guidance of the guiding unit (13), along a direction that a hot air stream of the cylinder body (3) is jetting towards. The guiding unit (13) is a device capable of providing guidance for the connecting rod (12) when the connecting rod (12) is moving. The limiting device (14), the cylinder cover component (4), and the connecting rod (12) are fixedly connected. The limiting device (14) limits the connecting rod (12) when an extremity thereof slides to the cylinder cover component (4). The present disclosure uses primarily the movement and limiting of the explosion-venting device to consume kinetic energy generated by deflagration, thus achieving the goal of safe and effective explosion ventilation, and preventing a grain (7) from causing injuries and damages when deflagrated.

A fire suppression system for producing an inert gas mixture having a minimal amount of carbon monoxide, particulates, or smoke. The inert gas mixture may be generated by combusting a gas generant. The gas generant may be a composition that includes hexa(ammine)-cobalt(III)-nitrate. The fire suppression system also includes a heat management system to reduce a temperature of the inert gas mixture. In one embodiment, the system includes multiple gas generators and is configured to ignite the respective gas generant of each gas generator in a predetermined, time based sequential order. For example, the gas generant of each gas generator may be ignited in a sequential order at specified time intervals. Methods of extinguishing fires are also disclosed.

An exemplary fire suppression system includes a sprinkler nozzle. At least one conduit is connected to the nozzle for delivering a fire suppression fluid to the nozzle. The conduit and the nozzle establish a discharge path. A pneumatically driven pump is connected with the conduit for pumping fluid into the conduit. A gas source provides pressurized gas to the pump for driving the pump. The gas source also provides gas to the discharge path for achieving a desired discharge of the fluid from the nozzle.

The present invention provides a method for extinguishing fire, comprising: (A) preparing a CFC-free and phosphorus-free aqueous fire extinguishing agent using a composition comprising 1-70 wt % of a sulfosuccinic acid ester; 1-30 wt % of a wetting agent; and rest in water; (B) diluting the CFC-free and phosphorus-free aqueous fire extinguishing agent by water to form an aqueous solution; and (C) spraying the aqueous solution to a space containing a burning substance. The present invention not only enhances the wettability and permeability of water, but also increases its affinity to burning substances; accelerates cooling of burning substances; inhibits further combustion; reduces water for firefighting; reduces smoke and emission; mitigates environmental problems caused by haze substances from combustions on the ground and in the air and all possible related health hazards. The CFC-free and phosphorus-free aqueous fire extinguishing agent is biodegradable, non-toxic to human and environment, and easy to use.

The present invention provides a method for extinguishing fire, comprising: (A) preparing a CFC-free and phosphorus-free aqueous fire extinguishing agent using a composition comprising 1-70 wt % of a sulfosuccinic acid ester; 1-30 wt % of a wetting agent; and rest in water; (B) diluting the CFC-free and phosphorus-free aqueous fire extinguishing agent by water to form an aqueous solution; and (C) spraying the aqueous solution to a space containing a burning substance. The present invention not only enhances the wettability and permeability of water, but also increases its affinity to burning substances; accelerates cooling of burning substances; inhibits further combustion; reduces water for firefighting; reduces smoke and emission; mitigates environmental problems caused by haze substances from combustions on the ground and in the air and all possible related health hazards. The CFC-free and phosphorus-free aqueous fire extinguishing agent is biodegradable, non-toxic to human and environment, and easy to use.

An embodiment of a fire suppression apparatus for fighting fires from an aerial vehicle is disclosed having a foam and water held in separate containers that when mixed forms a fire retardant in the separate water container, a pump driven by a first electric motor, the pump including an air induction valve positioned at the pump inlet where air and the fire retardant are drawn into the inlet and pressurized simultaneously by the pump, a primer pump driven by a second electric motor to prime the inlet with the fire retardant before starting the pump, an inverter to control startup of the first electric motor, and an aimable boom connected to the pump by a conduit, the boom including a nozzle on a distal end of the boom from which the pressurized water/foam/air fire retardant is dispensed toward a target. Vertical mount plates can attach the apparatus to opposite sides of the helicopter.

Disclosed herein is a solid aerosol detonator capable of generating a fire extinguishing gas by vaporizing an internal solid fire extinguishing agent in order to extinguish a fire which may be generated in a place to live or an industrial place and a fire extinguishing apparatus using the same. The solid aerosol detonator and the fire extinguishing apparatus using the same can be detonated using only a fire extinguishing agent of a solid form without using an electronic match or an ignition agent, that is, a material coated on an electrical percussion. Accordingly, the combustion action of a solid aerosol can be stably generated because the solid aerosol detonator and the fire extinguishing apparatus using the same are not sensitive to a change in the physical properties and a change in the temperature even after a lapse of a specific time.

A device for suppressing and/or extinguishing a fire associated with a container may include a housing defining a hollow sleeve and a column configured to be received within the hollow sleeve. The column may define a first chamber, a second chamber, at least one aperture, and a piercing end configured to pierce a barrier. The first chamber may be configured to receive an expansion agent, and the second chamber may be configured to receive a fire extinguishing agent. The device may be configured such that upon activation of the expansion agent, the column extends from the housing so as to enable the piercing end to penetrate the container and to enable the fire extinguishing agent to be delivered into an interior of the container via the at least one aperture.

A method for fire prevention and/or fire fighting on board an aircraft comprises the steps detecting a fire event, leading an extinguishant to a fire source through a cooling-system piping system (12) which serves, in the normal operation of the aircraft, to supply a refrigerant to a cooling station (14a, 14b) and/or discharge a refrigerant from a cooling station (14a, 14b), and flooding the fire source with the extinguishant.

A composition is disclosed including an oxidizer represented by the formula M.sup.1(X.sup.1O.sub.y).sub.z, wherein M.sup.1 is selected from a Group IA atom, and Group IIA atom, and a Group IIIA atom, X is selected from the group consisting of Cl, Br, I, y is 1-4, and z is 1-3, a fuel, and a hydrated salt or a combination of 2 or more hydrated salts having a dehydration decomposition temperature of greater than 200 C., represented by the formula (M.sup.2).sub.k(M.sup.3).sub.m(X.sup.2).sub.n(X.sub.3).sub.o.(H.sub.2O).sub.p, where M.sup.2 is selected from a Group IA atom, Group IIA atom, Group IIIA atom, M.sup.3 is selected from a Group IIA atom, Group IIIA, and a transition atom, X.sup.2 is a hydroxyl anion, X.sup.3 is a carbonate anion, k, m, n, and o are each independently integers that balance the charges of M.sup.2, M.sup.3, X.sup.2, and X.sup.3 and p is a number greater than or equal to 1.