CN220213771U - Fire extinguisher for external wall of building - Google Patents

Abstract

The disclosure relates to the technical field of building fire protection, in particular to a building outer wall fire extinguishing device. The fire extinguishing device for the outer wall of the building is arranged on the building and comprises a water supply pipeline and a plurality of diversion pipes, wherein the diversion pipes are communicated with the water supply pipeline, a first control valve is arranged at the joint of each diversion pipe and the water supply pipeline, and a fire sensor is arranged on each diversion pipe and is in signal connection with the first control valve. Each water diversion pipe is provided with a plurality of water outlets which are exposed out of the outer wall of the building. The fire extinguishing device for the building outer wall can control the water supply pipeline to supply water to the water diversion pipe when the fire is sensed to spread outside the building, and spray water to the outer wall, so that a water curtain is formed outside the building outer wall, the fire, the dense smoke and the toxic gas on a fire floor are prevented from spreading from the outside of the building to the upper floor through windows, and the fire is effectively restrained.

Description

Fire extinguisher for external wall of building

Technical Field

The disclosure relates to the technical field of building fire protection, in particular to a building outer wall fire extinguishing device.

Background

The fire disaster of the high-rise building has the characteristics of high floor height, huge building body volume, concentrated personnel and difficult evacuation and rescue, and once the fire disaster occurs, huge economic loss and casualties are caused.

The fire extinguishing mode for high-rise buildings mainly depends on indoor fire-fighting devices in the buildings, such as an indoor fire hydrant, an indoor automatic spraying fire-extinguishing system and the like, and the fire extinguishing mode can only extinguish indoor fire; when a fire spreads outside the building, flames and dense smoke are dissipated outwards through the window, and the indoor fire-fighting device cannot often suppress the external fire at the first time, so that the upper floor is affected. For the mode of adopting the fire engine to extinguish the fire outdoors, a plurality of high-rise buildings exceed the highest height of the fire-fighting scaling ladder, the fire is difficult to extinguish, and the operation efficiency of the fire engine is lower.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The object of the present disclosure is to provide a fire extinguishing apparatus for a building exterior wall, which can suppress flame and smoke from spreading upwards from the building exterior wall to a certain extent.

The fire extinguishing device for the outer wall of the building is arranged on the building and comprises a water supply pipeline and a plurality of diversion pipes, wherein the diversion pipes are communicated with the water supply pipeline, and a first control valve is arranged at the joint of the diversion pipes and the water supply pipeline; the water diversion pipe is provided with a fire sensor which is connected with the first control valve through signals;

each water diversion pipe is provided with a plurality of water outlets which are exposed out of the outer wall of the building.

In one exemplary embodiment of the present disclosure, the water supply line includes a communicating water inlet pipe and a main water supply pipe, the water inlet pipe is connected with the fire water tank, the main water supply pipe is communicated with a plurality of water diversion pipes, the main water supply pipe is buried in a wall of a building, and the water diversion pipes are installed at the outer side of an outer wall of the building.

In one exemplary embodiment of the present disclosure, the main water supply pipe includes a first water supply pipe and a second water supply pipe, the water inlet pipe is communicated with both the first water supply pipe and the second water supply pipe, and the first water supply pipe and the second water supply pipe are respectively buried in opposite angles of a wall body of a building;

the water diversion pipe comprises a first water diversion pipe and a second water diversion pipe, the first water diversion pipe is communicated with the first water supply pipe, and the second water diversion pipe is communicated with the second water supply pipe.

In one exemplary embodiment of the present disclosure, the water inlet pipe is further connected to an indoor fire water supply system including an alarm valve disposed inside the building, the alarm valve being in signal connection with the first control valve.

In one exemplary embodiment of the present disclosure, the main water supply pipe is filled with water when the first control valve cuts off the water supply pipe and the water diversion pipe.

In one exemplary embodiment of the present disclosure, the water outlet is open toward the bottom of the building.

In one exemplary embodiment of the present disclosure, the water outlet is provided with a water spray nozzle for dispersing water sprayed through the water spray nozzle into water mist droplets.

In an exemplary embodiment of the disclosure, the water diversion pipe surrounds a plurality of facades of the building, at least two second control valves are arranged on the water diversion pipe, and the at least two second control valves are respectively arranged on the parts of the water diversion pipe located on different facades;

the water diversion pipe is provided with at least two fire sensors, and the at least two fire sensors are respectively arranged at the parts of the water diversion pipe, which are positioned on different outer vertical surfaces.

In one exemplary embodiment of the present disclosure, a building exterior wall has multiple layers of windows, and a water distribution pipe is disposed along a gap between the different layers of windows of the building exterior wall.

In one exemplary embodiment of the present disclosure, the water distribution pipe includes a main spray section adjacent to the window and an auxiliary spray section connected between the main spray sections, a density of water outlets on the main spray section being greater than a density of water outlets on the auxiliary spray section.

The fire extinguishing device for the building outer wall can control the water supply pipeline to supply water to the water diversion pipe when the fire is sensed to spread outside the building, and spray water to the outer wall, so that a water curtain is formed outside the building outer wall, the fire, the dense smoke and the toxic gas on a fire floor are prevented from spreading from the outside of the building to the upper floor through windows, and the fire is effectively restrained.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may have different arrangements as known in the art. Furthermore, in the drawings, like reference numerals designate identical or similar parts throughout the several views. Wherein:

FIG. 1 schematically illustrates a schematic view of a building exterior wall fire suppression apparatus mounted to a building according to one exemplary embodiment of the present disclosure;

fig. 2 schematically illustrates a schematic view of a building exterior wall fire extinguishing apparatus according to an exemplary embodiment of the present disclosure along a cross section of a building.

The reference numerals are explained as follows:

100. a window; 1. a main water supply pipe; 11. a first water supply pipe; 12. a second water supply pipe; 2. a water diversion pipe; 21. a first water diversion pipe; 22. a second water diversion pipe; 3. a first control valve; 4. a fire sensor; 5. and a water outlet.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

Unless specified or indicated otherwise, the terms "coupled," "connected," and the like are to be construed broadly and, for example, "connected" may be either permanently connected, detachably connected, or integrally connected; "communication" may be direct communication or may be indirect communication through an intermediary. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms of "upper", "lower", "inner", "outer", "bottom", etc. described in the exemplary embodiments of the present disclosure are merely for convenience, and are described according to the position and state of the fire extinguishing apparatus for the external wall of a building after being installed in the building, or are consistent with the orientations in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure.

The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first" and "second" and the like are used merely as labels, and are not intended to limit the number of their objects.

The present disclosure provides a fire extinguishing apparatus for an exterior wall of a building, which is installed in the building. The fire extinguishing device for the building outer wall comprises a water supply pipeline and a plurality of diversion pipes 2, wherein the diversion pipes 2 are communicated with the water supply pipeline, a first control valve 3 is arranged at the joint of the diversion pipes 2 and the water supply pipeline, a fire sensor 4 is arranged on the diversion pipes 2, and the fire sensor 4 is in signal connection with the first control valve 3. Each water diversion pipe 2 is provided with a plurality of water outlets 5, and the water outlets 5 are exposed out of the outer wall of the building.

In particular, the water supply line may be connected to the water inlet pipe of the municipal water supply line and to the fire water basin for supplying water into the water distribution pipe 2. The fire sensor 4 may include a smoke-sensing type fire sensor 4, a temperature-sensing type fire sensor 4, a light-sensing type fire sensor 4, etc., the fire sensor 4 and the first control valve 3 may be connected in a fire protection system network of a building, and when the fire sensor 4 senses a fire, a signal may be sent to the first control valve 3, so that the first control valve 3 opens a valve, and water is supplied into the water diversion pipe 2 through a water supply pipe. Each water diversion pipe 2 is provided with a plurality of water outlets 5 exposed out of the building outer wall, after the first control valve 3 is opened, the water supply pipeline supplies water into the water diversion pipe 2, and the water outlets 5 can spray water outside the building outer wall.

The fire extinguishing device for the outer wall of the building can control the water supply pipeline to supply water to the water diversion pipe 2 when the fire is sensed to spread outside the building, and spray water to the outer wall, so that a water curtain is formed outside the outer wall of the building, fire, dense smoke and toxic gas on a fire floor are prevented from spreading from the window 100 to an upper floor from the outside of the building, and the fire is effectively restrained.

The fire extinguishing apparatus for the external wall of the building according to the present disclosure will be described in more detail with reference to fig. 1 and 2.

In an exemplary embodiment of the present disclosure, referring to fig. 1, a water supply line includes a water inlet pipe in communication with a main water supply pipe 1, which may be connected to a water inlet pipe of a municipal water supply pipe network and a fire water pond for supplying water into the main water supply pipe 1, the main water supply pipe 1 being in communication with a plurality of water diversion pipes 2. In one embodiment, the fire sensor 4 may send fire information to a control system of a building fire protection system network through a fire alarm system, and then the control system sends a signal to the first control valve 3 to cause the first control valve 3 to open the valve. When the fire extinguishing device for the outer wall of the building is in a quasi-working state, the first control valve 3 is in a closed state, and cuts off the main water supply pipe 1 and the shunt pipe 2. The water pressure in the main water supply pipe 1 can be maintained by the facilities such as pneumatic water supply equipment, a pressure stabilizing pump or a roof fire-fighting water tank, and the like, so that the upper pipeline and the lower pipeline of the first control valve 3 are filled with pressurized water. After the first control valve 3 is opened, the time for water to enter from the water inlet pipe can be saved, and the water outlet 5 can spray water for the first time.

The main water supply pipe 1 can be buried in the wall body of a building, and the water diversion pipe 2 can be arranged on the outer side of the outer wall of the building. For example, the main water supply pipe 1 can be vertically buried in a wall body at a corner formed by two outer vertical faces of the building body, so that the space of the building body is effectively utilized. The water outlet 5 is directed towards the outside of the building exterior wall, and in some embodiments the water distribution pipe 2 may be partially embedded within the building exterior wall, leaving only the water outlet 5 exposed to the exterior wall. In other embodiments, the water diversion pipe 2 is hung and installed on the outer side of the building outer wall through a bracket, the water outlet 5 is opened towards the bottom of the building on the water diversion pipe 2, and the sprayed water flows downwards under the action of gravity, so that a uniform water curtain is formed on the building outer vertical surface.

For example, in an exemplary embodiment of the present disclosure, referring to fig. 1, a main water supply pipe 1 is buried in a wall body at one corner of a building body, and the number of water diversion pipes 2 may be matched with the number of floors of the building, for example, one water diversion pipe 2 is provided between each floor. Each water diversion pipe 2 is communicated with the main water supply pipe 1, and each water diversion pipe 2 surrounds the outer vertical surface of the building for a circle. In an exemplary embodiment of the present disclosure, referring to fig. 1 and 2, a main water supply pipe 1 includes a first water supply pipe 11 and a second water supply pipe 12. The water inlet pipe is communicated with the first water supply pipe 11 and the second water supply pipe 12, and the water inlet pipe is used for supplying water to the first water supply pipe 11 and the second water supply pipe 12 respectively. The first water supply pipe 11 and the second water supply pipe 12 can be buried in the wall of the building. Accordingly, the water diversion pipe 2 also includes a first water diversion pipe 21 and a second water diversion pipe 22, the first water diversion pipe 21 communicates with the first water supply pipe 11, and the second water diversion pipe 22 communicates with the second water supply pipe 12. The first water supply pipe 11 and the second water supply pipe 12 supply water to the first diversion pipe 21 and the second diversion pipe 22 independently, respectively, so that the water supply efficiency of the water supply pipeline to the diversion pipe 2 can be improved.

Specifically, the first water supply pipe 11 and the second water supply pipe 12 may be buried in opposite corners of a wall of a building, respectively. For example, taking a building body with four vertical outer vertical faces as an example, the first water supply pipe 11 and the second water supply pipe 12 can be respectively embedded in opposite angles of a wall body of the building; for a building with more facades, the first water supply pipe 11 and the second water supply pipe 12 can be respectively buried in the wall body at two non-adjacent corners of the building.

In one exemplary embodiment of the present disclosure, each of the first water diversion pipes 21 is in communication with the first water supply pipe 11, and each of the first water diversion pipes 21 is coiled around a portion of the outer facade of the building; each second water diversion pipe 22 is communicated with the second water supply pipe 12, and each second water diversion pipe 22 is coiled on the outer elevation of the building, which is not coiled with the first water diversion pipe 21. The first water supply pipe 11 can be used for supplying water to the first diversion pipe 21, the second water supply pipe 12 can be used for supplying water to the second diversion pipe 22, and the first diversion pipe 21 and the second diversion pipe 22 can not be communicated, so that the first diversion pipe 21 and the second diversion pipe 22 can respectively form water curtains on different outer vertical surfaces of a building, and can be independently controlled by different first control valves 3, and the fire prevention accuracy of the outer wall of the building is improved.

In another exemplary embodiment of the present disclosure, the first water diversion pipes 21 and the second water diversion pipes 22 may be staggered between adjacent floors, the total number of the first water diversion pipes 21 and the second water diversion pipes 22 being matched with the number of floors of the building, each first water diversion pipe 21 surrounding the outer facade of the building at an odd number of floors; each second water diversion pipe 22 surrounds the facade of the building at an even number of floors for one week. The first water diversion pipe 21 and the second water diversion pipe 22 can cooperate, and the water outlet 5 of the first water diversion pipe 21 and the water outlet 5 of the second water diversion pipe 22 can spray water on all outer facades of the building independently, so that when one water diversion pipe 2 breaks down, a water curtain can still be formed on all outer facades of the building.

For another example, in an exemplary embodiment of the present disclosure, the first water diversion pipe 21 and the second water diversion pipe 22 each encircle the outer facade of each floor, that is, each floor is provided with a circle of first water diversion pipes 21 and a circle of second water diversion pipes 22, the water outlets 5 of the first water diversion pipes 21 and the water outlets 5 of the second water diversion pipes 22 may be staggered, the first water diversion pipes 21 and the second water diversion pipes 22 may cooperate to improve the uniformity degree of the formed water curtain; meanwhile, when a certain water diversion pipe 2 fails, a water curtain can still be formed on each outer vertical surface of the building. In other exemplary embodiments, the first water diversion pipe 21 and the second water diversion pipe 22 may be disposed on the outer vertical surface of the building in other forms, which are not listed here.

In an exemplary embodiment of the disclosure, the water diversion pipe 2 surrounds a plurality of facades of a building, at least two second control valves are arranged on the water diversion pipe 2, and the second control valves are respectively arranged on the parts of the water diversion pipe 2 located on different facades and are respectively used for controlling water supply of the water diversion pipe 2 where the second control valves are located on the facades. The water diversion pipe 2 is provided with at least two fire sensors 4, and the at least two fire sensors 4 are respectively arranged at the parts of the water diversion pipe 2 which are positioned on different outer vertical surfaces and are respectively connected with corresponding second control valves by signals. When a fire is spread to the outside of the building from a certain outer elevation or a plurality of outer elevations of the building, the corresponding fire sensor 4 can send signals to the corresponding second control valve, so that the second control valve is opened, the corresponding water outlet 5 on the outer elevation of the building when the fire is on fire starts to spray water, and the second control valve on the outer elevation of the building, which is not sensed by the fire sensor 4, can not be opened, thereby being capable of independently controlling the water curtains of different outer elevations of the building, improving the fire prevention accuracy of the outer wall of the building and improving the utilization rate of fire water.

In an exemplary embodiment of the present disclosure, the fire extinguishing apparatus for a building exterior wall may further include a water return pipe, which may be vertically buried in a wall of a building, one end of the water diversion pipe 2 is communicated with the water supply pipe, the other end is communicated with the water return pipe, and the water return pipe may be connected with the fire extinguishing pool, thereby forming a water flow path in the water supply pipe, the water diversion pipe 2 and the water return pipe, and maintaining circulating water in the water pipe. When the fire is on, the time for the water pump to pump water into the water pipe can be saved, so that the water outlet 5 can spray water for the first time.

The building exterior wall has a plurality of layers of windows 100, and in one exemplary embodiment of the present disclosure, the water diversion pipe 2 is disposed along a gap between different layers of windows 100 of the building exterior wall. For example, a water diversion pipe 2 is provided between each layer of windows 100. The water diversion pipe 2 includes a main spray section adjacent to the window 100 and an auxiliary spray section connected between the main spray sections. Adjacent to the window 100, the primary spray section may refer to the primary spray section being vertically aligned with the window 100. In an exemplary embodiment, each of the main spray section and the auxiliary spray section is provided with a water outlet 5, and the water outlets 5 are equal in size and equal in interval between each of the main spray section and the auxiliary spray section. In another exemplary embodiment, each main spray section is provided with a water outlet 5, while the auxiliary spray section is not provided with a water outlet 5.

In one exemplary embodiment of the present disclosure, the density of the water outlets 5 on the main spray section is greater than the density of the water outlets 5 on the auxiliary spray section. That is, the number of water outlets 5 per unit length of the main spray section is greater than the number of water outlets 5 per unit length of the auxiliary spray section. In the fire development process, flames and smoke mainly spread upwards from the windows 100 of the fire floor, and the density of the water outlets 5 on the main spraying section is large, so that the suppression of the fire and smoke near the windows 100 is enhanced, and the overall fire development to the upper layer is restrained.

The water outlet 5 may be provided with a spray head, for example, the water outlet 5 may be provided with a sprinkler head, which may spray water to flames and flue gases, which may be used for extinguishing fires. For another example, the water outlet 5 can be provided with a water curtain spray head, and the spray head sprays water into a curtain shape when water is discharged, so that the functions of well blocking and isolating fire and preventing the spread of fire can be achieved. In an exemplary embodiment of the present disclosure, the water outlet 5 is provided with a water spray nozzle, which can disperse water having a certain pressure into water mist droplets after passing through the water spray nozzle, and spray the water mist at a predetermined angle toward the bottom of the building. The water spray nozzle can greatly improve the water utilization rate, has good cooling effect, and can effectively prevent fire from spreading outside the building from bottom to top.

In particular, the building interior is also typically provided with an indoor fire-fighting water supply system, and the building exterior wall fire extinguishing device of the present disclosure can also work in combination with an indoor fire-fighting water supply system provided inside the building. Specifically, the inlet tube can also be connected with indoor fire control water supply system, i.e. the inlet tube can introduce the fire control water in municipal water supply network's inlet tube and the fire control pond to be used for simultaneously supplying water to indoor fire control water supply system and the building outer wall extinguishing device of this disclosure. The indoor fire water supply system comprises an alarm valve arranged in a building, the alarm valve can be used for switching on and switching off the water flow of an indoor fire water supply system pipe network, and can transmit fire information to the building fire water supply system network to alarm so as to automatically start an indoor fire extinguishing nozzle.

In an exemplary embodiment of the present disclosure, the alarm valve is also in signal connection with the first control valve 3. For example, after a fire occurs indoors, the alarm valve transmits fire information to the control system of the fire protection system network of the building, and then the control system sends a signal to the first control valve 3 to enable the first control valve 3 to open the valve, so that when the fire does not spread outside stairs, the outdoor fire sensor 4 can not sense the fire, the first control valve 3 can be opened in advance to prevent the development of the fire.

Further, in an exemplary embodiment of the present disclosure, the alarm valve is connected to the first control valve 3 corresponding to a floor of a building. For example, the alarm valve is in signal connection with the first control valve 3 for controlling the water distribution pipe 2 between the floor where the alarm valve is located and the floor above, after the alarm valve alarms, the first control valve 3 on the same floor as the alarm valve can be controlled to open the valve, water is sprayed above the outer vertical surface of the building corresponding to the fire floor, and the flame and the dense smoke on the floor are prevented from spreading to the upper layer.

Furthermore, the alarm valve can be correspondingly connected with the second control valve according to the orientation of the building body. For example, each floor of the building is provided with a plurality of alarm valves, the alarm valves are in signal connection with a second control valve for controlling the opening and closing of the water diversion pipe 2 of the outer vertical surface of the building corresponding to the azimuth where the alarm valves are located, after the alarm valves alarm, the second control valves corresponding to the alarm valves can be controlled to open the valves, water is sprayed above the outer vertical surface of the building corresponding to the fire azimuth, and the flame and the dense smoke of the outer vertical surface are prevented from spreading to the upper layer.

The building outer wall fire extinguishing device of the disclosed exemplary embodiment can be linked with the indoor fire water supply system after the indoor fire water supply system is started, so that the fire floor can be accurately positioned at the first time, the temperature of the building outer wall is controlled, and the fire and smoke are prevented from spreading upwards from the outside.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A fire extinguishing device for an external wall of a building is characterized in that the fire extinguishing device for the external wall of the building is arranged on the building and comprises a water supply pipeline and a plurality of water diversion pipes, wherein,

the water diversion pipe is communicated with the water supply pipeline, and a first control valve is arranged at the joint of the water diversion pipe and the water supply pipeline; the fire disaster sensor is arranged on the water diversion pipe and is in signal connection with the first control valve;

and each water distribution pipe is provided with a plurality of water outlets, and the water outlets are exposed out of the outer wall of the building.

2. The fire extinguishing apparatus for the external wall of a building according to claim 1, wherein,

the water supply pipeline comprises a communicated water inlet pipe and a main water supply pipe, the water inlet pipe is connected with the fire-fighting water tank, the main water supply pipe is communicated with a plurality of water diversion pipes, the main water supply pipe is buried in a wall body of a building, and the water diversion pipes are installed on the outer side of an outer wall of the building.

3. The fire extinguishing apparatus for an external wall of a building according to claim 2, wherein the main water supply pipe comprises a first water supply pipe and a second water supply pipe, the water inlet pipe is communicated with the first water supply pipe and the second water supply pipe, and the first water supply pipe and the second water supply pipe are respectively buried in opposite angles of a wall body of the building;

the water diversion pipe comprises a first water diversion pipe and a second water diversion pipe, wherein the first water diversion pipe is communicated with the first water supply pipe, and the second water diversion pipe is communicated with the second water supply pipe.

4. The building exterior wall fire extinguishing apparatus according to claim 2, wherein the water inlet pipe is further connected to an indoor fire water supply system including an alarm valve provided inside the building, the alarm valve being in signal connection with the first control valve.

5. The fire extinguishing apparatus for an external wall of a building according to claim 2, wherein the main water supply pipe is filled with water when the first control valve cuts off the water supply pipe and the water diversion pipe.

6. The building exterior wall fire extinguishing apparatus according to claim 1, wherein the water outlet is opened toward a bottom of the building.

7. The fire extinguishing apparatus for an external wall of a building according to claim 1, wherein the water outlet is provided with a water spray nozzle for dispersing water sprayed from the water spray nozzle into water mist droplets.

8. The fire extinguishing device for the external wall of the building according to claim 1, wherein the water diversion pipe surrounds a plurality of external vertical surfaces of the building, at least two second control valves are arranged on the water diversion pipe, and the at least two second control valves are respectively arranged on the parts of the water diversion pipe, which are positioned on different external vertical surfaces;

the fire disaster sensor is characterized in that at least two fire disaster sensors are arranged on the water diversion pipe, and the at least two fire disaster sensors are respectively arranged on the portions, located on different outer vertical surfaces, of the water diversion pipe.

9. The building exterior wall fire extinguishing apparatus according to any one of claims 1 to 8, wherein the building exterior wall has a plurality of layers of windows, and the water diversion pipe is provided along a gap between different layers of windows of the building exterior wall.

10. The building exterior wall fire suppression apparatus according to claim 9, wherein the water distribution pipe includes a main spray section adjacent to the window and an auxiliary spray section connected between the main spray sections, the water outlets on the main spray section having a greater density than the water outlets on the auxiliary spray section.