Normal and high pressure fire extinguishing system for super high-rise residence and public building combined building group

Abstract

The utility model discloses a constant high pressure fire fighting system of a super high-rise residence and public building combined building group, which comprises a plurality of equal-height super high-rise residences (1) and one or more connected public buildings (2), the height of the public buildings (2) is lower than that of the super high-rise residences (1), the top floor of each super high-rise residence (1) is provided with a fire fighting pool (3), and the top floor of each super high-rise residence (1) is provided with a fire fighting water tank (4). A water outlet of the fire pool (3) is respectively connected with an upper-layer temporary high-pressure water outlet module (4) and a normal high-pressure water outlet module (5), and a water inlet of the fire pool (3) is connected with a water supply pipe (6); the system further comprises public building fire-fighting main pipes (7) located in the public buildings (2), the public building fire-fighting main pipes (7) are connected with fire-fighting branch pipes (8) of all floors of the public buildings, the bottoms of the public building fire-fighting main pipes (7) are connected with water conveying main pipes (9), and the water conveying main pipes (9) are connected with the bottoms of the normal-high-pressure water outlet modules (5).

Description

Technical Field

[0001] This utility model relates to a building fire protection system, and in particular to a constant high-pressure fire protection system for a combination of high-rise residential buildings and public buildings. Background Technology

[0002] The fire water tank of a constant-pressure fire protection system needs to be centrally located on the top floor of the building (the tank capacity must meet the fire water demand of the most unfavorable location in the building or building complex). Additionally, temporary high-pressure booster pump rooms and elevated fire water tanks are required for individual floors on the top floor. The fire water tank and pump room occupy a significant portion of the main building's top floor area and significantly increase the structural load, resulting in high costs. Therefore, this system is rarely used in super high-rise buildings under 250m.

[0003] For projects combining super high-rise residential buildings and public buildings under 250m in height, if two or more residential buildings are of the same height and are the tallest buildings in the complex, a temporary high-pressure fire protection system is generally considered. A temporary high-pressure fire water supply system refers to a system that cannot normally meet the working pressure and flow requirements of water-based fire extinguishing facilities, requiring the activation of fire pumps to meet these requirements during a fire. Temporary high-pressure fire water supply systems for super high-rise buildings generally employ parallel or series zoned water supply systems, with series zoned systems being more commonly used. The main disadvantages are the need for machine rooms in basements and refuge floors, which occupy refuge floor space, increase structural load, and cause noise and vibration interference to floors above and below the refuge floors. Furthermore, the need for high-zone booster pumps and transfer pumps increases system costs. Therefore, there is an urgent need to develop a constant-pressure fire protection system suitable for super high-rise residential and public building complexes with two or more residential buildings of the same height that are the tallest buildings in the complex, to effectively reduce space occupation and system costs. Utility Model Content

[0004] The purpose of this invention is to provide a constant-pressure fire protection system for high-rise residential and public building complexes. This constant-pressure fire protection system effectively reduces space occupation and investment costs.

[0005] The technical solution of this utility model is as follows: a constant-pressure fire protection system for a combination of high-rise residential buildings and public buildings, comprising multiple high-rise residential buildings of equal height and one or more connected public buildings, wherein the height of the public buildings is lower than that of the high-rise residential buildings. Each high-rise residential building is equipped with a fire water tank on its top floor. The outlet of the fire water tank is connected to an upper temporary high-pressure water outlet module and a constant-pressure water outlet module, respectively. The inlet of the fire water tank is connected to a water supply pipe. It also includes a public building fire main pipe located in each public building. The public building fire main pipe is connected to the fire branch pipes of each floor of the public building. The bottom of the public building fire main pipe is connected to a water supply main pipe, which is connected to the bottom of the constant-pressure water outlet module.

[0006] In the aforementioned high-pressure fire protection system for high-rise residential and public building complexes, the upper-level temporary high-pressure water outlet module includes a first outlet pipe connected to the outlet of the fire water tank. The first outlet pipe is connected to a fire pump room, and the fire pump room is connected to the temporary high-pressure fire pipes of each temporary high-pressure floor via pipelines.

[0007] In the aforementioned high-pressure fire protection system for high-rise residential and public building complexes, the high-pressure water outlet module includes a second water outlet pipe connected to the outlet of the fire water tank, and the second water outlet pipe is connected in parallel to the high-pressure fire pipes of each high-pressure floor.

[0008] In the aforementioned high-pressure fire protection system for high-rise residential and public building complexes, the bottom of the second outlet pipe is connected to the main water supply pipe.

[0009] In the aforementioned high-pressure fire protection system for high-rise residential and public building complexes, the high-pressure fire pipe at the bottom is also connected to the basement fire protection network via an adjustable pressure reducing valve assembly.

[0010] Compared with existing technologies, this utility model, by separately installing fire water tanks and fire pump rooms on the rooftops of two or more of the tallest and highest residential buildings in a building complex, not only meets the fire protection needs of individual buildings but also, when combined, meets the fire protection needs of the entire building complex. This allows each residential building to require only half or less of the required fire-fighting capacity, reducing the structural load by half or more. The fire pump rooms only need to house high-zone fire pumps, saving on equipment room floor space, load, and investment costs. In practical projects, this system has improved the safety and reliability of the fire protection system's water supply, reduced system costs, and facilitated the application and promotion of constant pressure high-voltage systems in building complexes under 250m.

[0011] Specifically, 1) this application effectively reduces the capacity of a single rooftop fire water tank by distributing the fire water tanks, reducing the tank capacity by at least 50%; 2) it eliminates the need for elevated fire water tanks (saving at least 36m³ of space). 3 3) Except for the top few floors which use a temporary pressurized water supply system, the remaining floors use gravity water supply. The fire water supply system is simple to control and has high reliability and safety. 4) Through the optimized spatial layout design of the building, the impact on the floor height of other residential buildings and the layout of the lower buildings can be minimized.

[0012] In summary, the constant pressure fire protection system of this utility model can effectively reduce space occupation and investment costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0015] The labels in the attached diagram are as follows: 1-Super high-rise residential building, 2-Public building, 3-Fire water tank, 4-Upper temporary high-pressure water outlet module, 5-Normal high-pressure water outlet module, 6-Water supply pipe, 7-Public building fire main pipe, 8-Fire branch pipe, 9-Water supply main pipe, 10-Basement fire pipe network, 401-First water outlet pipe, 402-Fire pump room, 403-Temporary high-pressure fire pipe, 501-Second water outlet pipe, 502-Normal high-pressure fire pipe. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example. The constant-pressure fire protection system for a high-rise residential and public building complex consists of, for example... Figure 1 and 2 As shown, the building includes multiple high-rise residential buildings 1 of equal height and one or more connected public buildings 2, with the height of the public buildings 2 being lower than that of the high-rise residential buildings 1. Each high-rise residential building 1 has a fire water tank 3 on its top floor. The outlet of the fire water tank 3 is connected to an upper temporary high-pressure water outlet module 4 and a constant high-pressure water outlet module 5, respectively. The inlet of the fire water tank 3 is connected to a water supply pipe 6. The building also includes a public building fire main pipe 7 located in each public building 2. The public building fire main pipe 7 is connected to the fire branch pipes 8 of each floor of the public building. The bottom of the public building fire main pipe 7 is connected to a water supply main pipe 9, which is connected to the bottom of the constant high-pressure water outlet module 5.

[0018] The upper temporary high-pressure water outlet module 4 includes a first water outlet pipe 401 connected to the outlet of the fire water tank 3. The first water outlet pipe 401 is connected to the fire pump room 402. The fire pump room 402 is connected to the temporary high-pressure fire pipe 403 of each temporary high-pressure floor via a pipeline.

[0019] The constant pressure water outlet module 5 includes a second water outlet pipe 501 connected to the outlet of the fire water tank 3, and the second water outlet pipe 501 is connected in parallel to the constant pressure fire pipes 502 of each constant pressure floor.

[0020] The bottom of the second water outlet pipe 501 is connected to the main water supply pipe 9.

[0021] The constant high-pressure fire pipe 502 located at the bottom is also connected to the basement fire pipe network 10 via an adjustable pressure reducing valve assembly.

[0022] The fire pump room is equipped with high-zone fire pumps, pressure relief valves, water hammer eliminators, and pressure switches. The equipment in the rooftop fire pump room of the highest building meets the fire water volume and pressure requirements of the top floors of each building, greatly reducing the size and power of the water supply equipment and the area of ​​the pump room.

[0023] The specific design scheme for a distributed fire protection system combining constant and temporary high voltage is as follows:

[0024] According to the Technical Specification for Fire Water Supply and Fire Hydrant System GB50974-2014, the indoor fire water consumption Vg of the most unfavorable individual building in this building complex is determined.

[0025] Based on the building height of the tallest residential building, calculate and verify whether the gravity water supply at the height of the fire water tank meets the pressure required by the most unfavorable fire protection facilities of other most unfavorable individual buildings;

[0026] Calculate the effective volume required for the high-level fire water tank on the top floor of each of the tallest residential buildings, V1 = Vg / N (m³). 3 );

[0027] In the formula: N is the number of the tallest residential buildings of equal height; V1 is not less than 198m. 3 .

[0028] Each top-floor residential building is equipped with a small booster pump room and pressure stabilization facilities to meet the fire flow and pressure requirements of individual floors on the top floor of each building.

[0029] Taking this project as an example, it comprises two super high-rise residential buildings, two Class A high-rise office buildings, and some property management supporting facilities. Buildings 1 and 2 (residential) have 54 floors above ground and 5 floors below ground, with a building height of 193.5 meters; Building 3 (office) has 22 floors above ground and 5 floors below ground, with a building height of 93.95 meters; Building 4 (office) has 22 floors above ground and 5 floors below ground, with a building height of 89.95 meters; Building S1 (the podium of Building 1) has 2 floors above ground and 5 floors below ground, with a building height of 9.9 meters; the podiums of Buildings 3 and 4 have 3 floors above ground and 5 floors below ground, with a building height of 23.6 meters; and there is a 5-story basement (garage and equipment rooms). The minimum design water volume for individual indoor fire hydrants in this project is 40L / s, with a fire duration of 3 hours; the design water volume for the automatic sprinkler system is 35L / s, with a fire duration of 1 hour. The total indoor fire-fighting water storage capacity of this project should not be less than 558 tons. The design water flow rate for a single indoor fire hydrant in a single high-rise residential building is 20 L / s, with a fire duration of 2 hours; the design water flow rate for the automatic sprinkler system is 15 L / s, with a fire duration of 1 hour. Two fire water tanks, each 279 m³, are installed on the rooftops of the two high-rise residential towers. 3 Total fire-fighting water volume: 558m³ 3 This meets the overall fire water demand (if there are three super high-rise residential buildings of the same height, the water storage capacity at the top of each super high-rise residential building is 198m³).3 To ensure the pressure of the fire protection system in the high-rise area (floors 43 and above), each high-rise residential building is equipped with two fire hydrant booster pumps (one for operation and one for standby) and two sprinkler booster pumps (one for operation and one for standby). Floors 42 and below are supplied with water directly by gravity from the rooftop fire water tank or with reduced pressure.

[0030] Decentralized constant-pressure fire protection systems have the following advantages:

[0031] 1. By dispersing the rooftop fire water tanks, the capacity of a single rooftop fire water tank can be effectively reduced. For example, in the case study, the tank capacity is reduced by 50%.

[0032] 2. No need to install an elevated fire water tank (saving at least 36m²) 3 );

[0033] 3. The fire pump room equipment on the roof of the tallest building meets the fire water volume and pressure of the top floors of each building, greatly reducing the size and power of the water supply equipment and reducing the pump room area;

[0034] 4. Except for the top few floors which use a temporary pressurized water supply system, the remaining floors use gravity water supply. The fire water supply system is simple to control and has high reliability and safety.

[0035] 5. Based on the design scheme of the example and through structural load analysis, when the effective volume of the rooftop fire water tank is 279m³... 3 At that time, the beam height within the load range of the water tank is approximately 700-900 mm (the beam height after partial upward treatment). Through optimized spatial layout design, its impact on the floor height of residential buildings can be minimized. This is achieved when the system allows for an effective volume of 198 m³ for the fire-fighting water tank on the roof of each building. 3 At this time, the beam height can be further reduced, which has less impact on the layout of the lower building.

Claims

1. A constant-pressure fire protection system for a combination of high-rise residential buildings and public buildings, comprising multiple high-rise residential buildings (1) of equal height and one or more connected public buildings (2), wherein the height of the public buildings (2) is lower than the height of the high-rise residential buildings (1), characterized in that: Each high-rise residential building (1) has a fire water tank (3) on the top floor. The outlet of the fire water tank (3) is connected to the upper temporary high-pressure water outlet module (4) and the constant high-pressure water outlet module (5). The inlet of the fire water tank (3) is connected to the water supply pipe (6). It also includes a public building fire main pipe (7) located in each public building (2). The public building fire main pipe (7) is connected to the fire branch pipes (8) of each floor of the public building. The bottom of the public building fire main pipe (7) is connected to the water supply main pipe (9). The water supply main pipe (9) is connected to the bottom of the constant high-pressure water outlet module (5).

2. The constant-pressure fire protection system for super high-rise residential and public building complexes according to claim 1, characterized in that: The upper temporary high-pressure water outlet module (4) includes a first water outlet pipe (401) connected to the outlet of the fire water tank (3), the first water outlet pipe (401) is connected to the fire pump room (402), and the fire pump room (402) is connected to the temporary high-pressure fire pipe (403) of each temporary high-pressure floor via a pipeline.

3. The constant-pressure fire protection system for super high-rise residential and public building complexes according to claim 1, characterized in that: The constant pressure water outlet module (5) includes a second water outlet pipe (501) connected to the outlet of the fire water tank (3), and the second water outlet pipe (501) is connected in parallel to the constant pressure fire pipes (502) of each constant pressure floor.

4. The constant-pressure fire protection system for super high-rise residential and public building complexes according to claim 3, characterized in that: The bottom of the second outlet pipe (501) is connected to the main water supply pipe (9).

5. The constant-pressure fire protection system for super high-rise residential and public building complexes according to claim 3, characterized in that: The constant high-pressure fire pipe (502) located at the bottom is also connected to the basement fire pipe network (10) via an adjustable pressure reducing valve assembly.

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