CN218176003U - Building fire extinguishing system and building - Google Patents

Abstract

The utility model provides a building fire extinguishing system, including setting up the fire-fighting water pond at building underground one deck, and set up the fire-fighting water pump house on building underground two layers, the below setting that the fire-fighting water pump house corresponds the fire-fighting water pond. The fire pump room is provided with a fire pump, a water suction pipe and a water outlet pipe, water in the fire pool can enter the water pump through the water suction pipe, and the water can be output to a corresponding fire pipe network through the water outlet pipe. Through with fire-fighting water pond and the setting of stacking on the direction of height of building of fire-fighting water pump room, the static pressure difference that the fire-fighting water pump can directly utilize the water absorbs water, shortens the lift route of water, and then reduces fire-fighting water pump power.

Description

Building fire extinguishing system and building

Technical Field

The utility model relates to a building fire engineering technical field especially relates to a building fire extinguishing system and building.

Background

According to the relevant requirements of building engineering, certain fire fighting equipment, including a fire pool and a fire pump room, is required to be arranged in the building. In an economically developed city, land resources are increasingly tense, and a fire pool and a fire pump room are generally arranged in the underground layer of a building to fully utilize space. However, when the fire-fighting water pool and the fire-fighting water pump are arranged at the same horizontal height, the fire-fighting water pump needs a certain power to absorb water from the fire-fighting water pool, which is not favorable for improving the water absorption efficiency of the fire-fighting water pump.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model discloses building fire extinguishing system and building can more rational utilization building space.

In order to achieve the above object, on the one hand, the utility model discloses a building fire extinguishing system, building fire extinguishing system is used for the building, the building includes secret one deck and two layers underground, building fire extinguishing system includes:

the fire pool is arranged on the underground layer;

fire pump room, fire pump room set up in two layers in the underground, and correspond to the below setting in fire-fighting water pond, fire pump room is equipped with fire pump, absorbs water pipe and outlet pipe, absorb water the union coupling in fire-fighting water pond with the fire pump, go out water piping connection in fire pump's output.

As an optional implementation manner, in the embodiment of the present invention, the fire-fighting pool includes a first pool and a second pool, the first pool is used for storing the outdoor fire-fighting water, the second pool is used for storing the indoor fire-fighting water, and the first pool and the second pool are in the underground layer and are arranged side by side and sealed.

As an optional implementation manner, in the embodiment of the utility model, the fire pump includes outdoor fire pump and indoor fire pump, outdoor fire pump with indoor fire pump all sets up in the fire pump room, outdoor fire pump communicate in first pond, indoor fire pump communicate in the second pond.

As an optional implementation manner, in the embodiment of the present invention, a water outlet is disposed at the bottom of the fire pool, and a waterproof gasket is disposed on a side wall surface of the water outlet.

As an alternative embodiment, in an embodiment of the present invention, the bottom surface of the fire pool is provided with a leak-proof coating.

As an optional implementation manner, in the embodiment of the present invention, the fire pool is provided with an overflow pipe, and the water inlet position of the overflow pipe is flush with the overflow water level of the fire pool.

As an optional embodiment, the embodiment of the utility model provides an in, the bottom of the pool in fire-fighting water pond still be equipped with let out the empty mouth and with let out the overflow mouth that the empty mouth interval set up, the fire-fighting water pond still is equipped with lets out empty pipe, the overflow pipe connect in the overflow mouth, let out empty union coupling in let out the empty mouth, let out empty pipe's water inlet position be less than the minimum effective water level in fire-fighting water pond, let out empty pipe be used for discharging water in the fire-fighting water pond.

As an optional implementation manner, in the embodiment of the present invention, the fire water pump room is further provided with a water collecting pit, the overflow pipe and at least a part of the evacuation pipe are located in the fire water pump room, and the overflow pipe and the evacuation pipe are all connected to the water collecting pit.

As an optional implementation manner, in an embodiment of the present invention, the fire-fighting water pump room is further provided with a centralized drainage pipe, and both the portion of the overflow pipe located in the fire-fighting water pump room and the portion of the emptying pipe located in the fire-fighting water pump room are connected to the centralized drainage pipe, and the centralized drainage pipe is connected to the water collection pit;

work as when the fire-fighting water pond includes first pond and second pond, first pond with the second pond all is equipped with the overflow pipe with let out empty pipe, the overflow pipe in first pond with the overflow pipe in second pond all communicate in the sump pit, the empty pipe that lets out in first pond with the empty pipe that lets out in the second pond all communicate in the sump pit.

In a second aspect, the utility model discloses a building, the building includes ground building portion, underground building portion and aforementioned building fire extinguishing system, underground building portion set up in the below of ground building portion, underground building portion includes secret one deck and two layers underground, the fire pond set up in the secret one deck, the fire pump room sets up in two layers underground.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a pair of building fire extinguishing system, including setting up the fire-fighting water pond at building underground one deck to and set up the fire-fighting water pump house on building underground two floors, the below setting that fire-fighting water pump house corresponds the fire-fighting water pond. The fire pump room is provided with a fire pump, a water suction pipe and a water outlet pipe, water in the fire pool can enter the water pump through the water suction pipe, and the water can be output to a corresponding fire pipe network through the water outlet pipe. Through stacking the setting with fire-fighting water pool and fire pump room on the direction of height of building, the first aspect, the static pressure difference that the fire-fighting water pump can directly utilize the water absorbs water, can make the lift route of water shorten like this for need the pressurized high reduction, so, can choose the water pump that power is littleer for use, compare fire-fighting water pump and fire-fighting water pool with layer setting, the power of the fire-fighting water pump of this scheme of adoption can reduce about 1/3, be favorable to reducing energy consumption. The second aspect can reduce the occupation of fire extinguishing system to the one deck space in the underground of building, under the prerequisite that satisfies the fire pond water supply height of national standard requirement, the space on the two floors in make full use of for the space utilization is more reasonable, reduces the waste in building space. In the third aspect, the fire pump house often sends out great noise in the course of working, through setting up it in two layers underground, can effectively reduce the noise to being located the commercial space or the living space of one layer underground and ground floor's influence.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a floor plan of a subterranean zone of a fire protection system for a building according to an embodiment of the present application;

FIG. 2 is a floor plan of the underground second floor of the fire protection system of the building provided by the embodiment of the present application;

FIG. 3 is a schematic structural diagram of a first water tank and an outdoor fire pump of the building fire fighting system provided by the embodiment of the application;

FIG. 4 is a schematic structural diagram of a second water tank and an indoor fire pump of the building fire fighting system provided by the embodiment of the application;

fig. 5 is a schematic structural view in a vertical direction of a building structure provided by an embodiment of the application.

Icon: 1. a building fire protection system; 10. a fire pool; 11. a first pool; 12. a second pool; 13. the bottom of the pool; 130. a water outlet; 1301. a whirl preventer; 131. venting ports; 132. an overflow port; 14. an overflow pipe; 15. a vent tube; 16. a liquid level signal device; 101. the highest effective water level; 102. the lowest effective water level; 103. an overflow water level; 20. a fire pump house; 21. a fire pump; 211. an outdoor fire pump; 212. an indoor fire pump; 22. a suction pipe; 23. a water outlet pipe; 230. a water hammer arrestor; 24. a sump; 25. a centralized water drainage pipe; 2. building; 200a, a ground building part; 200b, underground building; 200. a subterranean layer; 210. and (5) underground two layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1 to 4, the present application provides a building fire fighting system 1, where the building fire fighting system 1 is used in a building 2, the building 2 includes an underground first floor 200 and an underground second floor 210, the building fire fighting system 1 includes a fire pool 10 and a fire pump room 20, and the fire pool 10 is disposed in the underground first floor 200; the fire pump room 20 is arranged on the second layer 210 of the underground, and is arranged corresponding to the lower part of the fire pool 10, the fire pump room 20 is provided with a fire pump 21, a water suction pipe 22 and a water outlet pipe 23, the water suction pipe 22 is connected with the fire pool 10 and the fire pump 21, and the water outlet pipe 23 is connected with the output end of the fire pump 21.

Through stacking the setting with fire-fighting water pump room 10 and fire-fighting water pump room 20 in the direction of height of building 2, first aspect, fire-fighting water pump 21 can directly utilize the static pressure difference of water to absorb water, can make the lift route of water shorten like this, make the high reduction of needs pressurization, so, can choose the fire-fighting water pump 21 that the power is littleer for use, set up with the same layer with fire-fighting water pump room 10 than fire-fighting water pump room 20, the power of fire-fighting water pump 21 of this scheme of adoption can reduce about 1/3, be favorable to reducing energy consumption.

In the second aspect, the occupation of the building fire fighting system 1 to the 200 spaces of the underground one layer of the building 2 can be reduced, and the space of the underground two layers 210 is fully utilized on the premise of meeting the water supply height of the fire pool required by the national standard, so that the space utilization is more reasonable, and the waste of the building space is reduced.

In a third aspect, the fire pump house 20 tends to generate a loud noise during operation, and by being installed in the underground second floor 210, the effect of the noise on the commercial space or the residential space located in the underground first floor 200 and the ground floor can be effectively reduced.

Optionally, the outlet pipe 23 is provided with a water hammer arrestor 230, the water hammer arrestor 230 being arranged to counteract the water hammer effect occurring in the outlet pipe 23. The water hammer effect means that water flows freely in the water pipe due to the fact that the inner wall of the pipe is smooth, when the opened valve is closed suddenly, the water flow generates pressure on the valve and the pipe wall, and the follow-up water flow quickly reaches the maximum under the action of inertia and has a destructive effect on the valve. Therefore, the water hammer eliminator 230 is provided to eliminate the water hammer effect and prevent the water outlet pipe 23 from being damaged.

In some embodiments, the fire service water pool 10 includes a first water pool 11 and a second water pool 12, the first water pool 11 is used for storing outdoor fire service water, the second water pool 12 is used for storing indoor fire service water, and the first water pool 11 and the second water pool 12 are juxtaposed and closed in the underground layer 200.

Through setting up first pond 11, second pond 12, can supply water for indoor fire control network management respectively, outdoor fire control network management supplies water. First pond 11 and second pond 12 are parallelly arranged to be set up at underground one deck 200, can reduce the clearance between first pond 11 and the second pond 12 on the one hand to reduce and occupy in the space of underground one deck 200, on the other hand can make the gravity after the pond retaining accord with evenly distributed, avoid two fire-fighting ponds to stack from top to bottom and the unbalanced problem of structure that causes, also avoided additionally setting up reinforced structure's cost expenditure for this reason. Through the closed arrangement, the first water pool 11 and the second water pool 12 are in independent spaces in the underground layer, and equipment such as a fire fighting dispersing port, a fire fighting channel and the like do not need to be independently arranged in the area of the fire fighting water pool 10, so that the design of the building fire fighting system 1 is simplified, and the space occupation is further reduced.

Alternatively, the first basin 11 and the second basin 12 may share the same water inlet pipe (not shown) for supplying water to the first basin 11 and the second basin 12. A remote control ball float valve (not shown) can be further arranged at the water inlet pipe, the floating ball of the ball float valve can be respectively arranged on the liquid level of the first water tank 11 and the liquid level of the second water tank 12, and the remote control ball float valve is used for controlling the water level of the first water tank 11 and the water level of the second water tank 12.

Optionally, a liquid level signal device 16 can be disposed in the fire pool 10, the liquid level signal device 16 can be used for monitoring the water level of the fire pool 10, and the liquid level signal device 16 has functions of displaying the water level and displaying the water level in a fire control center or a duty room. In particular, the level signaling device 16 may be a level gauge.

In some embodiments, the fire-fighting water pump 21 includes an outdoor fire-fighting water pump 21 and an indoor fire-fighting water pump 21, the outdoor fire-fighting water pump 21 and the indoor fire-fighting water pump 21 are both disposed in the fire-fighting water pump room 20, the outdoor fire-fighting water pump 21 is connected to the first water tank 11, and the indoor fire-fighting water pump 21 is connected to the second water tank 12.

By providing two fire pumps 21 separately, the water in the first and second tanks 11, 12 can be controlled separately and independently, simplifying the piping arrangement. The outdoor fire pump 21 and the indoor fire pump 21 are arranged in the same fire pump room 20, so that the space can be further saved.

In some embodiments, the pool bottom 13 of the fire pool 10 is provided with a water outlet 130, and the side wall surface of the water outlet 130 is provided with a waterproof gasket (not shown). Because the fire-fighting water pool 10 is arranged at the top of the fire-fighting water pump room 20, the water outlet 130 is arranged at the bottom 13 of the fire-fighting water pool 10, the water suction distance of the fire-fighting water pump 21 can be shortened to the maximum extent, and the water suction efficiency of the fire-fighting water pump 21 is improved. Accordingly, the water outlet 130 requires a corresponding waterproof measure to prevent the water in the fire pool 10 from leaking from the water outlet. Set up waterproof gasket through the inside wall at delivery port 130, waterproof gasket fixes the side wall at delivery port 130 through pasting on the one hand, and on the other hand, waterproof gasket can also hug closely the lateral wall of delivery port 130 under the lateral pressure effect that the gravity of water produced, effectively prevents water and passes through delivery port 130 seepage to building floor or wall body, has also avoided water seepage to fire water pump house 20.

Optionally, the waterproof gasket includes, but is not limited to, a silicone sealing waterproof gasket, a non-asphalt based waterproof gasket.

Optionally, the outlet 130 of the fire hydrant pool 10 may be provided with a whirl preventer 1301. Through setting up whirl preventer 1301, at the hydrophilic in-process of fire pump 21, can prevent effectively that the air from inhaleing fire pump 21 along with the whirl, avoid fire pump 21 to produce the cavitation phenomenon and be destroyed, effectively eliminate the whirl that fire pump 21 produced at water absorption in-process fire pond 10, realize the high-efficient water delivery of fire pump 21.

In some embodiments, the bottom surface of the fire hose basin 10 is provided with a leak-proof coating (not shown). Generally speaking, the inside concrete floor of building waterproof antiseep's effect is relatively poor, if set up fire pond 10, fire pond 10 most of time is in the state of storing water, it is tired day by day, water in the fire pond can pass through other structures of floor infiltration to the building in, consequently, through setting up the leak protection coating, the leak protection coating can be the leak protection agent that mixes in the concrete of floor, 13 leakages at the bottom of the pool of water through fire pond 10 in can effectively preventing the fire pond 10 like this, improve the reliability that building fire extinguishing system 1 used.

In some embodiments, the fire hydrant cabinet 10 is provided with an overflow pipe 14, and the water inlet position of the overflow pipe 14 is flush with the overflow water level 103 of the fire hydrant cabinet 10.

Specifically, the fire pool 10 is designed to have a maximum effective water level 101 and a minimum effective water level 102 according to the water storage requirement, the stress condition of the fire pool 10, and other factors. The maximum effective water level 101 refers to the highest water level that the fire-fighting water pool 10 can bear, and the overflow water level 103 refers to the height position at which the water inlet of the overflow pipe is arranged. Alternatively, the overflow water level 103 may be slightly higher than the most significant water level 101, so that the fire pool 10 may reach the most significant water level 101 when storing water, and when the water level is higher than the overflow water level 103, the water will overflow through the overflow pipe 14. When the water level of the fire hose tank 10 is below the overflow water level 103, water cannot enter the overflow pipe 14, and thus will not overflow through the overflow pipe 14 at this time.

Through setting up overflow pipe 14, can carry out the overflow to the water that exceeds the highest water level in fire pond 10, prevent that the water level from surpassing the bearing capacity of fire pond 10 wall too high, avoid destroying the structural safety of fire pond 10, improve the reliability in the fire pond 10 use.

In some embodiments, the pool bottom 13 of the fire pool 10 is further provided with a drainage opening 131 and an overflow opening 132 spaced from the drainage opening 131, the fire pool 10 is further provided with a drainage pipe 15, the overflow pipe 14 is connected to the overflow opening 132, the drainage pipe 15 is connected to the drainage opening 131, the water inlet position of the drainage pipe 15 is lower than the minimum effective water level 102 of the fire pool 10, and the drainage pipe 15 is used for draining water in the fire pool 10. The minimum effective water level 102 is the lowest water level at which the fire-fighting pipe network communicated with the fire pool can absorb water.

Through setting up the evacuation pipe 15, can close delivery port 130 when overhauing fire pond 10, cut off the water path connection of fire pond 10 and fire pump 21, open evacuation pipe 15, discharge the water in the fire pond 10 through evacuating pipe 15, the overhaul of the fire pond 10 of being convenient for, impurity or sediment in the drainage in-process fire pond 10 also can be avoided simultaneously and the pipe 22 that absorbs water gets into fire pump 21 is absorbed through absorbing water, thereby cause the jam of the pipe 22 that absorbs water or the destruction of fire pump 21. By providing the overflow port 132, it is possible to communicate the overflow pipe 14 to the outside of the fire hose tank 10, so that water overflowing from the fire hose tank 10 can be discharged outside the fire hose tank 10.

By setting the water inlet level of the emptying pipe 15 to be lower than the lowest effective water level 102 of the fire pool, the water in the fire pool 10 can be emptied to the maximum extent. By arranging the emptying port 131 at the bottom 13 of the fire pool 10, the fire pool 10 can be automatically emptied by the gravity of water, and energy required in the emptying process of the fire pool 10 is saved. The overflow port 132 and the emptying port 131 are respectively arranged, so that the fire pool 10 can be ensured to be independent and not interfered with each other in the process of overflowing or emptying, and the working reliability of the fire pool 10 is improved.

Optionally, a drain valve (not shown) may be disposed in the drain pipe 15, and the drain valve is used to connect or close the drain pipe 15.

In some embodiments, the fire pump room 20 is further provided with a sump 24, at least a portion of the overflow pipe 14 and the drain pipe 15 are located in the fire pump room 20, and the overflow pipe 14 and the drain pipe 15 are both connected to the sump 24. By providing the sump 24 in the fire pump room 20, the water discharged when the fire pool 10 overflows or empties can be drained. Alternatively, the overflow pipe 14 and the emptying pipe 15 are connected with the sump 24, that is, the pipe openings of the overflow pipe 14 and the emptying pipe 15 can be arranged above the sump 24 corresponding to the sump 24, so that water can directly flow into the sump 24 when flowing out of the overflow pipe 14 or the emptying pipe 15.

In some embodiments, the fire-fighting water pump house 20 is further provided with a central drainage pipe 25, the part of the overflow pipe 14 located in the fire-fighting water pump house 20 and the part of the evacuation pipe 15 located in the fire-fighting water pump house 20 are both connected to the central drainage pipe 25, and the central drainage pipe 25 is connected to the sump 24. Thus, the overflow pipe 14 and the emptying pipe 15 can drain water to the sump 24 through the centralized drainage pipe 25, the number of pipelines arranged in the fire water pump room 20 is reduced, and the pipeline arrangement of the fire water pump room 20 is simplified.

When the fire-fighting water pool 10 comprises the first water pool 11 and the second water pool 12, the first water pool 11 and the second water pool 12 are both provided with the overflow pipe 14 and the emptying pipe 15, the overflow pipe 14 of the first water pool 11 and the overflow pipe 14 of the second water pool 12 are both communicated with the water collection pit 24, and the emptying pipe 15 of the first water pool 11 and the emptying pipe 15 of the second water pool 12 are both communicated with the water collection pit 24. Therefore, the first water tank 11 and the second water tank 12 share the same water collecting pit 24, so that the design of a drainage pipeline can be simplified, and the space occupied by the building fire-fighting system 1 is saved.

Referring to fig. 5, in a second aspect, the present embodiment further provides a building 2, the building 2 includes a ground building portion 200a, an underground building portion 200b, and the building fire protection system 1, the underground building portion 200b is disposed below the ground building portion 200a, the underground building portion 200b includes an underground first floor 200 and an underground second floor 210, the fire-fighting water pool 10 is disposed on the underground first floor 200, and the fire-fighting water pump room 20 is disposed on the underground second floor 210. Thus, by adopting the building fire fighting system 1 in the building 2, the underground space of the building 2 can be more reasonably utilized, and the waste of the building space is reduced.

The building fire-fighting system and the building disclosed by the embodiment of the utility model are introduced in detail, the principle and the implementation mode of the utility model are explained by applying a specific embodiment, and the explanation of the embodiment is only used for helping to understand the building fire-fighting system, the building and the core idea thereof; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.

Claims (10)

1. A building fire protection system for a building, the building including a first underground story and a second underground story, the building fire protection system comprising:

the fire pool is arranged on the underground layer;

fire pump room, fire pump room set up in two layers in the underground, and correspond to the below setting in fire-fighting water pond, fire pump room is equipped with the fire pump, absorbs water pipe and outlet pipe, absorb water union coupling in fire-fighting water pond with the fire pump, go out water piping connection in the output of fire pump.

2. The building fire fighting system of claim 1, wherein the fire fighting pools include a first pool for storing outdoor fire fighting water and a second pool for storing indoor fire fighting water, the first pool and the second pool being juxtaposed and closed in the underground formation.

3. The building fire fighting system according to claim 2, wherein the fire fighting water pump comprises an outdoor fire fighting water pump and an indoor fire fighting water pump, both the outdoor fire fighting water pump and the indoor fire fighting water pump are disposed in the fire fighting water pump room, the outdoor fire fighting water pump is communicated with the first water pool, and the indoor fire fighting water pump is communicated with the second water pool.

4. A building fire fighting system according to any one of claims 1 to 3, wherein a water outlet is provided at the bottom of the fire fighting pool, and a waterproof gasket is provided on a side wall surface of the water outlet.

5. A building fire protection system as claimed in any one of claims 1 to 3, wherein the bottom surface of the fire-fighting pool is provided with a leak-proof coating.

6. A building fire fighting system according to any one of claims 1 to 3, characterized in that the fire pool is provided with an overflow pipe, the water inlet position of which is level with the overflow water level of the fire pool.

7. The building fire fighting system according to claim 6, wherein a drainage port and an overflow port spaced from the drainage port are further formed in the bottom of the fire pool, a drainage pipe is further disposed in the fire pool, the overflow pipe is connected to the overflow port, the drainage pipe is connected to the drainage port, the water inlet position of the drainage pipe is lower than the minimum effective water level of the fire pool, and the drainage pipe is used for draining water in the fire pool.

8. The building fire protection system of claim 7, wherein the fire pump house is further provided with a sump, and wherein at least a portion of the overflow pipe and the drain pipe are located in the fire pump house, the overflow pipe and the drain pipe both being connected to the sump.

9. The building fire fighting system according to claim 8, wherein the fire pump house is further provided with a centralized drainage pipe, the portion of the overflow pipe located in the fire pump house and the portion of the evacuation pipe located in the fire pump house are both connected to the centralized drainage pipe, and the centralized drainage pipe is connected to the sump;

work as when the fire-fighting water pond includes first pond and second pond, first pond with the second pond all is equipped with the overflow pipe with let out empty pipe, the overflow pipe in first pond with the overflow pipe in second pond all communicate in the sump pit, the empty pipe that lets out in first pond with the empty pipe that lets out in the second pond all communicate in the sump pit.

10. A building, characterized in that the building comprises a ground building portion, an underground building portion and the building fire fighting system according to any one of claims 1 to 9, the underground building portion is arranged below the ground building portion, the underground building portion comprises an underground one floor and an underground two floor, the fire-fighting water pool is arranged on the underground one floor, and the fire-fighting water pump room is arranged on the underground two floor.

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