CN112121346A

CN112121346A - External fire extinguishing system and fire extinguishing method

Info

Publication number: CN112121346A
Application number: CN202011011120.3A
Authority: CN
Inventors: 马锦
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2020-12-25

Abstract

An external fire suppression system includes a power source, a water pump for delivering a pressurized flow of fire suppressant material, a conduit disposed to the exterior of a building; a plurality of temperature sensors which are arranged on the pipeline at intervals; a plurality of smoke sensors mounted on the pipe at intervals; a plurality of variable flow nozzles connected to the duct, the plurality of variable flow nozzles operable to distribute a variable spray of fire suppressant material to the exterior of the building and to a control system; the external fire-extinguishing alarm system can effectively extinguish fire of a building.

Description

External fire extinguishing system and fire extinguishing method

Technical Field

The invention relates to the technical field of external fire extinguishing systems of buildings, in particular to an external fire extinguishing system and a fire extinguishing method.

Background

In modern cities, indoor fire disasters occur frequently, once a serious fire disaster occurs in a high-rise building, escape means are few, serious consequences are caused, the serious consequences are about to occur or are difficult to discover by people at the initial stage, when the fire disaster is discovered, the fire extinguishing device cannot be controlled or people cannot approach the fire extinguishing device, the cost of the existing automatic fire extinguishing device is high, and the failure rate is high after the fire disaster is discovered; therefore, it is necessary to provide a fire extinguishing device with reasonable structure, wide fire extinguishing range, low cost, simple operation, safety and reliability.

Disclosure of Invention

In view of the drawbacks of the prior art, it is an object of the present invention to provide an external fire extinguishing system, i.e. a fire extinguishing method, which is capable of effectively extinguishing a building.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

an external fire suppression system comprising:

a power source;

a water pump for delivering a pressurized flow of fire extinguishing material,

a duct arranged to an outside of the building;

a plurality of temperature sensors which are arranged on the pipeline at intervals;

a plurality of smoke sensors mounted on the pipe at intervals;

a plurality of variable flow nozzles connected to the duct, the plurality of variable flow nozzles operable to disperse a variable spray of fire suppressant material to the exterior of the building;

and the control system is respectively connected with the temperature sensor, the smoke sensor and the water pump, and controls the pressurizing flow of the water pump and the dispersing flow nozzle of the fire extinguishing material through a plurality of variables according to signals fed back by the temperature sensor and the smoke sensor.

Further, one or more thermal indicators coupled to the power source are included, wherein the one or more thermal indicators are configured to detect the presence of a fire and transmit a signal into the control system indicating the presence of the fire.

Further, the flow nozzle includes a frame, a deflector, a stopper, a base, a flow tube, an outer tube, a tube support, an accessory holder, a cap, a plunger, a stopper ball, and an O-ring, the deflector is fixedly mounted at the bottom of the frame, the stopper is a member that can be melted by heat, the top of the stopper is fixedly mounted at the bottom of the flow tube through the base clip, wherein the stopper can be detached when the top of the stopper is pressed, the bottom of the stopper is fixedly connected to the deflector, the tube support is integrally connected to the frame, the bottom of the outer tube is fixedly mounted inside the tube support, the top of the outer tube is mounted inside the accessory support, the cap is fixedly mounted at the top of the outer tube, the plunger is disposed between the cap and the accessory support, and the O-ring is disposed at the top of the outside of the plunger, the limiting ball is arranged at the bottom end of the outer side of the plunger.

Furthermore, the locating part bottom is through the screw fixed mounting that is provided with on the deflector.

Further, the control system is configured to cause the fire suppressant material to be fed into the conduit via the pump and dispersed through a variable flow nozzle connected thereto.

Further, the fire extinguishing material is water.

Further, the fire extinguishing material is a gaseous agent.

Further, the fire extinguishing material dispersed by the plurality of variable flow nozzles is in a form selected from the group consisting of liquid, gas, vapor and foam.

Meanwhile, the invention also provides a fire extinguishing method for realizing the external fire extinguishing system, which comprises the following steps:

s1, when the temperature sensor and/or the smoke sensor detect the temperature and/or the smoke concentration triggering the alarm, starting the water pump;

s2, driving an external fire extinguishing material to be conveyed to the nozzle through a pipeline by a water pump;

and S3, spraying the fire extinguishing material through the nozzle to extinguish the fire.

According to the scheme, the external fire extinguishing system is composed of the water pump, the pipeline, the temperature sensor, the smoke sensor and the plurality of nozzles, when a building catches fire, smoke and temperature generated by the building catching fire can trigger the smoke sensor and the temperature sensor to act, so that the water pump is prompted to start, fire extinguishing materials are conveyed to the nozzle parts through the pipeline, and fire extinguishing is carried out; its locating part that can drop through being provided with the pressurized and/or being heated in the bottom of flow tube of nozzle in this scheme can guarantee the stability of nozzle during operation effectively, guarantees the normal fire extinguishing operation that sprays of fire extinguishing material.

Drawings

Fig. 1 is a schematic structural view of an external fire extinguishing system in the present embodiment.

Fig. 2 is a schematic structural diagram of an external fire extinguishing system in the embodiment.

Fig. 3 is a schematic view of the internal structure of the nozzle in this embodiment.

Detailed Description

Referring to FIG. 1, a front view of an external fire suppression system 100 is shown. A fire suppression system includes a plurality of fire protection devices or water curtains of directed water flow arranged to be installed on the exterior of a building, such as a dwelling. In practice, the external dimensions of the external fire suppression system 100 depend on the size and shape of the building and the location of the building where fire is likely to occur from the outside, and the fire curtain is configured to be attached to the outside of the building at multiple locations.

For example, in fig. 2, a fire resistant curtain is attached to a roof 103 and an exterior wall 104 or facade of a building. Preferably, the protective curtain is attached to the top of the roof and the top of the outer wall. This is important during operation, as the mist will discharge a curtain of water downwards.

In one embodiment, the fire curtain includes a conduit line 101 and a plurality of variable flow nozzles 102 positioned along and coupled to the conduit line. The conduit line is configured to deliver a pressurized stream of water, and each nozzle is configured to provide a variable spray, including but not limited to a spray, of pressurized water 105/106. Preferably, each of the plurality of variable flow nozzles is sufficiently spaced along the pipeline such that the variable spray of pressurized water is configured to reach all exterior surfaces of the building. In some embodiments, the plurality of variable nozzles may be concentrated at specific locations of the building that are considered most susceptible to fire. In still other embodiments, the pressurized water may be selectively directed or restricted to specific variable flow nozzles depending on the location of the greatest threat of the control system to fire.

According to an embodiment of the invention, the fire suppression system provides a variable spray of pressurized fire suppressant material, such as water in the form of a "curtain" as described above. It is understood that the fire suppression system may deliver and disperse any other fire suppression material, such as a compound, composition or liquid having foaming properties. In particular, the system according to the invention may be configured to transport and disperse fire extinguishing materials suitable for dry chemical fire extinguishing or wet chemical fire extinguishing. For example, in some embodiments of the invention, the conduit feed and the plurality of variable nozzles create vapor suppressing bubbles, which is particularly effective in preventing fire conditions. In some embodiments, the conduit may supply a reagent that absorbs heat and lowers the temperature of the fire below the ignition point when the reagent is dispersed by the plurality of variable nozzles.

In some embodiments, the fire extinguishing material dispensed by the variable nozzle may be a gaseous agent, such as carbon dioxide, that extinguishes the flame by displacing oxygen. In other embodiments, a wet fire suppressant may be used that is dispersed through the variable nozzle to suppress the fire, cover the flame, and prevent the fire from reigniting.

Refer to the figures. Referring to fig. 2, a schematic diagram of an external fire suppression system 100 is shown. As previously described, the external fire suppression system includes a conduit 101 configured to be attached to the exterior of a building 107, the conduit having a plurality of variable flow nozzles 102 configured to provide a variable spray of pressurized water. In one embodiment, the conduit line may be positioned at a distance from an exterior surface of the building such that the plurality of variable flow nozzles are configured to project a variable spray to an exterior of the building. The angle of each of the plurality of variable flow nozzles may be adjusted at installation or remotely by instructions received from the control system to reach all surface areas outside the building. As shown in fig. 1. As shown in fig. 2, a standpipe 108 may also be provided to disperse a variable spray of pressurized water or chemical compound at a predetermined height above the level of the conduit line.

Referring to FIG. 2, the external fire suppression system 100 further includes a control system 110, a pump 120, a water storage tank 125, and a power source 130, which may include a primary and secondary or backup power source (not shown). The control system 110 is configured to control all aspects of the external fire suppression system 100 according to the present invention. In one embodiment, the control system 110 is configured to control the form of a variable spray, dispersion, of fire extinguishing material (e.g., pressurized water and/or chemical agents, one or more compounds, gas, or foam-forming liquid). Fire extinguishing material (e.g., liquid spray, foam), flow pressure (high or low pressure) to disperse the fire extinguishing material, variable spray location (concentrated at a particular concentration if desired) location, and any programmed, preset or timed conditions for initiating variable spraying of the system. The particular spray of the system may vary depending on the location of each nozzle and the hazard or threat situation.

Referring to fig. 3, in one embodiment, the nozzle 102 includes a frame 1021, a deflector 1022, a stopper 1028, a base 1023, a flow tube 1026, an outer tube 1025, a tube holder 1029, a fitting holder 10211, a cap 10212, a plunger 10215, a stopper ball 10213, and an O-ring 10214, the deflector 1022 is fixedly mounted at a bottom end of the frame 1021, the stopper 1028 is a member that can be melted by heat, a top end of the stopper 1028 is fixedly mounted at a bottom end of the flow tube 1026 by the

base

1023, 1024, wherein the stopper 1028 can be removed after the top end is pressed, the bottom end of the stopper 1028 is fixedly connected to the deflector 1022, the tube holder 1029 is integrally connected to the frame 1021, a bottom end of the outer tube 1025 is fixedly mounted inside the tube holder 1029, a top end of the outer tube 1025 is mounted inside the fitting holder 10211, the cap 10212 is fixedly mounted at a top end of the outer tube 1025, the plunger 10215 is disposed between the cap 10212 and the fitting, an O-ring 10214 is disposed on the outer top end of plunger 10215, and a stop ball 10213 is disposed on the outer bottom end of plunger 10215. The bottom end of the stopper 1028 is fixedly mounted on the deflector 1022 by a screw 1027.

In the event of a fire, i.e., when the retainer 1028 is burned by the fire, it is completely detached from the frame 1021, and the flow tube 1026 and cap 10212 are both lowered until the lower end of the flow tube 1026 engages the lower end of the frame 1021; then, stopper ball 10213 blocking plunger 10215 enters a groove formed inside accessory holder 10211, and plunger 10215 drops downward at a high speed due to the pressure of the fire extinguishing fluid, so that the fire extinguishing fluid flows through plunger 10215. The fire suppression fluid passes through the interior of the flow tube 1026 and is sprayed to extinguish the fire as directed by the flow tube 1026.

Further, on the building, one or more temperature sensors or thermal indicators (hereinafter "thermal indicators") 150 are provided on the exterior and/or interior of the building. The thermal indicator 150 is operatively connected to communicate, preferably wirelessly, with the control system 110. The one or more thermal indicators 150 are configured to send a signal to the control system 110, for example, upon reaching a predetermined temperature, indicating the presence of a potentially dangerous or threatening condition, such as a fire. In an embodiment, one or more temperature sensors or thermal indicators 150 are coupled to the power source 130 and are operable to (a) detect the presence of a fire and (b) send a signal to the control system 110 indicating the presence of a fire.

In response to the signal transmitted by the one or more thermal indicators 150, the control system 110, also coupled or operatively connected to the power source 130, activates the system 100 by turning on the pump 120, wherein the pump is configured to: fire suppressant material is pumped from the storage tank 125 through the pipe 101 for dispersion.

In one embodiment, the storage tank is configured to store water, including municipal water, well water, rainwater, or combinations thereof. If stormwater is stored, a stormwater collection system (not shown) may be used to capture the stormwater, as is known in the art. In alternative embodiments, the storage tank need not be a storage tank, but rather is configured to store any suitable fire extinguishing material.

The pump and control system are powered by a power source which preferably includes a primary power source (power from a city) and a backup power source when the primary power source is unavailable. In one embodiment, the backup power source may be a solar panel, a backup generator, or a combination thereof. Any backup generator may be used, such as a dual propane or natural gas fuel generator. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An external fire suppression system, comprising:

a power source;

a water pump for delivering a pressurized flow of fire extinguishing material,

a duct arranged to an outside of the building;

a plurality of smoke sensors mounted on the pipe at intervals;

and the control system is respectively connected with the temperature sensor, the smoke sensor and the water pump, wherein the control system controls the pressurizing flow of the water pump and controls the dispersing flow nozzle of the fire extinguishing material through a plurality of variables according to signals fed back by the temperature sensor and the smoke sensor.

2. An external fire suppression system according to claim 1, further comprising one or more thermal indicators coupled to the power source, wherein the one or more thermal indicators are configured to detect the presence of a fire and transmit a signal indicative of the presence of the fire into the control system.

3. An external fire suppression system according to claim 1 or 2, wherein the flow nozzle comprises a frame, a deflector, a stopper, a base, a flow tube, an outer tube, a tube holder, an accessory holder, a cap, a plunger, a stopper ball, and an O-ring, the deflector is fixedly mounted at the bottom end of the frame, the stopper is a thermally fusible member, the stopper top end is fixedly mounted at the bottom end of the flow tube through the base clip, wherein the stopper top end is removable when pressed, the stopper bottom end is fixedly connected to the deflector, the tube holder is integrally connected to the frame, the outer tube bottom end is fixedly mounted inside the tube holder, the outer tube top end is mounted inside the accessory holder, and the cap is fixedly mounted at the outer tube top end, the plunger is arranged between the pipe cap and the accessory support, the O-shaped sealing ring is arranged at the top end of the outer side of the plunger, and the limiting ball is arranged at the bottom end of the outer side of the plunger.

4. An external fire suppression system according to claim 3, wherein the bottom end of the retainer is fixedly mounted to the deflector by a screw provided thereto.

5. An external fire suppression system according to claim 2, wherein the control system is configured to cause the fire suppressant material to be fed into the conduit via the pump and dispersed through a variable flow nozzle connected thereto.

6. An external fire suppression system according to claim 1, wherein said fire suppressing material is water.

7. An external fire suppression system according to claim 1, wherein said fire suppression material is a gaseous agent.

8. An external fire suppression system according to claim 1, wherein the fire suppressant material dispersed by said plurality of variable flow nozzles is in a form selected from the group consisting of liquid, gas, vapor and foam.

9. A method of extinguishing a fire in an external fire extinguishing system according to any one of claims 1 to 8, characterized in that the method of extinguishing a fire comprises the steps of: