【 Weak current College 】 Jiangsu Province science and historical and Cultural Center for fire control design---Power By 【 China power house network 】

Introduction: the historical and cultural center of Jiangsu Province science fire control design
Keywords: fire water supply programme design, sprinkler system

A, project profiles
The project is located in Nanjing, Hexi District, South Lake Road East, South West of weft eight-way, to the North Hengshan Road, is 24 meters wide planning road. Use local is, flat. Area 27153 square meters, building area: 11213.18 m2 (including overhead lane and outdoor stair platform), total area: 29912.07 m2 (excluding overhead garage area). A total of five-layer, a layer to overhead garage, and equipment room. This project is a set of Office, meeting rooms, exhibition, an integrated architecture. In addition to the light side of the Office building of some buildings of more than 24 metres, are less than 24 metres.

According to the Minaret Xiao (2004), no. 98 on the historical and cultural center of Jiangsu Province science demonstration meeting minutes fire safety design called "agreed in principle to the architectural design of the building fire safety code requirements for fire protection, fire-fighting facilities should follow the high-level civil building design fire protection standard" settings, "spirit of fire water in a tall building design.

Second, the regional fire-fighting system settings

This project into four units, five regional complex of buildings:

Zone 1: light Hall

The first layer is the garage, and equipment room, storey 4.5 m, fire fighting system settings: preaction sprinkler systems, fire hydrant system in which water distribution room using spray extinguishing systems, parking garages, according to zhongwei Ⅱ layout selection extended type of sprinkler head.

The second layer is the top 15.6 to 21.3 m high space Hall. Fire system settings: large space water gun (ZSS-25) large-space intellectualized active sprinkler system system and fire hydrant system.

Region II: Jiangsu Province Science Hall

The first floor is for car and bike parking, storey 3.6 m, fire fighting system settings: preaction sprinkler systems, fire hydrant system.

Height of 2nd storey 6.0 m, 3, 4, 5-layer Central into three layers-high Auditorium, on both sides as a subsidiary function rooms, each storey 3.9 m. Fire system settings: large space water gun (ZSS-25) large-space intellectualized active sprinkler system system, big space intelligent fire suppression equipment (ZSD detector and ZSD-40A nozzle) large-space intellectualized active sprinkler system, sprinkler systems and fire hydrant system. Three-layer pass high auditorium with a large space water gun (ZSS-25) large-space intellectualized active sprinkler system system and fire hydrant system. Exhibition Hall and entrance hall with large-space intellectualized fire-extinguishing appliances (ZSD detector and ZSD-40A nozzle) large-space intellectualized active sprinkler system and fire hydrant system

Zone 3: local Museum

First floor-entrance hall and library, two to five stories for Office and stock room, reading room, storey 3.9 m. Fire system settings: fire hydrant system, sprinkler system. Which stacks according to zhongwei Ⅱ layout.

Zone 4: Jiangsu Province culture

The first floor is for car and bike parking, storey 3.6 m; fire-fighting system settings: preaction sprinkler systems, fire hydrant system, garage, according to zhongwei Ⅱ layout selection extended type of sprinkler head.

Local stage and backstage in lower 4.4 meters high. Height of 2nd storey 6.0 m, fire fighting system settings: automatic sprinkler systems, fire hydrant system.

Intermediate into three layers-high "Melody" theatre Hall. 3, 4, 5-layer for Office space, each storey 3.9 m.

Fire system settings: large space water gun (ZSS-25) large-space intellectualized active sprinkler system system, big space intelligent fire suppression equipment (ZSD detector and ZSD-40A nozzle) large-space intellectualized active sprinkler system, sprinkler systems and fire hydrant system. Three-layer pass high Church "Melody" Theatre in big space water gun (ZSS-25) large-space intellectualized active sprinkler system system and fire hydrant system. Exhibition Hall and lounge with large-space intellectualized fire-extinguishing appliances (ZSD detector and ZSD-40A nozzle) large-space intellectualized active sprinkler system and fire hydrant system.

Zone 5: the writers of office building

The first floor is for car and bike parking, storey 3.6 m, fire fighting system settings: preaction sprinkler systems, fire hydrant system, garage, according to zhongwei Ⅱ layout selection extended type of sprinkler head.

The second layer is the exhibition hall, conference rooms and Literary Salon, storey 6.0 m, 3, 4, 5-layer for the library, archives, libraries and teaching, Office space, storey 3.9 m. Fire system settings: automatic sprinkler systems, fire hydrant system.

3. fire protection system design

The fire-fighting facilities in accordance with the high civil building design fire protection standard "settings, fire-fighting water supply in accordance with a design of high-rise building. This greatly improves the construction of fire rating, a corresponding increase in the fire water.

1. a fire protection system design parameters

1.1 fire hydrant system: indoor hydrant water 30L/S; outdoor fire water 30L/S; duration press fire 3 hours.

1.2 automatic sprinkler system: water demand for S, role 35L/time by 1 hour.

1.3 large space intelligent active sprinkler system: System of fire fighting installations ZSD detector, ZSD-40A nozzle and ZSS-25 water cannon

1.3.1ZSD detector and ZSD-40A technical parameters: voltage 24V, the working pressure 0.25Mpa shoot water flow 5L/s, protection RADIUS 6m, installation height 6-25m;

1.3.2ZSS-25 high-altitude water cannon technical parameters: voltage 220V, working pressure 0.6Mpa shoot water flow 5L/s, protection RADIUS 20m, installation height 6-20m.

1.3.3 system design flow and pressure system maximum design flow while spraying of water sprinkler 4, system design flow q = 20L/S. Fire duration calculation by 60 minutes, a fire water tank V = 72 cubic meters of water, pump lift P = 100m water column pressure.

2. design of water

Through this project related fire system settings determine the comprehensive analysis of the building while fire occurrences for a time, and then on the buildings of all kinds of fires likely to occur, portfolio analysis, choose the most adverse circumstances required for fire flow (which may occur in the largest fire flow) as the building fire safety design flow. After analysis, when light Hall and three layer pass high Auditorium, three-layer pass high Church "Melody" theatre, there is a fire, the fire sprinkling of maximum, then the fire hydrant system, big space intelligent active sprinkler system, automatic water sprinkler equipment etc. and as the project of the fire protection system design flow. Calculation of total fire 115L/S of water.

3. fire water tank

Fire hydrant system water press fire duration 3 hours, an automatic sprinkler system by 1 hour. Large-space intellectualized active sprinkler system as 1 hour, outdoor fires are municipal fire hydrant water supply tube consider 74m3. Fire water tank volume:

V=30l/sX3.6x3+35l/sx3.6x1+20l/sx3.6x1-74m3=450m3

Outdoor fire water supply by outdoor rain cisterns. Rainwater cistern 4 only, every 200m3.

4. high water tanks and pressure regulator device

High water tank fire water storage by 18m3, in the water tank compartment fire hydrant system and spray system has turbo-charged voltage devices. Design parameter:

Selection of fire hydrant pressure water sharing equipment parameters: Q = 4L/s, H = 26m, N = 2.2kw. Lower pressure: maximum pressure P1 = 0.1MPa: P2 = 0.25Mpa.

Use spray pressure water sharing equipment parameters: Q = 0.8L/s, H = 25m, N = 1.1kw. Lower pressure: maximum pressure P1 = 0.1MPa: P2 = 0.25Mpa.

5. fire pump room

Fire pump house set in a layer of water pump room. 1, fire hydrant system pump selection XBD30-50-HY (q = 30L/S, H = 52M, N = 37KW)-fire pump two, a preparation with a.

Automatic spraying systems pump selection XBD40-100-HY (q = 0 ~ 40L/S, H = N = number of 75KW 100M,)-fire pump 2, a preparation with a.

Due to the constant pressure variable flow pump for, does not require specialized series pressure relief.

6. the fire pump with filter

Outdoor set SQ-150-aboveground fire pump combination for 5 groups. One spray 3 groups, fire hydrant 2 groups.

7. emergency fire-fighting equipment

According to the specifications in building floors layout of dry powder or foam fire extinguishers. Fire extinguishers and fire hydrant installation combinations in the Cabinet.

4. big space intelligent active sprinkler system:

This design in light Hall and Lecture Hall and other places set big space intelligent active sprinkler system in recent years developed a completely new sprinkler system. The system is automatic detection and identification of ignition, start the system, fixed positioning active sprinkler fire-fighting mode. Particularly suitable for space height, volume, the fire temperature heating slow, difficult to set up the traditional closed sprinkler system in place, such as: the Grand Theatre, concert halls, Exhibition Center, terminal building, Stadium, hotel, Office building, the Atrium, libraries, science and Technology Museum, etc.

And use of the thermal control of passive fire protection components of closed sprinkler system and a manual or manual sprinkler system, has the following advantages:

1, with artificial intelligence, can actively probe for and early detection to determine the source of fire;

2, can fire location location location and alarm;

3, can be active on the system fixed positioning sprinkler;

4, can be quickly extinguished early fire;

5, sustainable water-jet looms, and proactively stop and repeated opening and closing;

6. applicable space height range (fire fighting equipment installation height of up to 25 m);

7. installation flexibility, without foil roof installation, no need to set hot devices;

8, water-based fire-fighting equipment (automatic scan fire suppression equipment and automatic scan water high-altitude water cannon fire extinguishing device) water water water concentration, fight early fire effects;

9, sprinkler-fire suppression equipment (large space intelligent fire suppression equipment) sprinkler sprinkling water particles and on fire penetration ability, not easily atomization;

10, on the protection of the regional implementation of Omni-directional continuous monitoring.

The system and use of various detection device control automatically start open rain fire extinguishing system, has the following advantages:

1. detection of positioning range smaller, more accurately, to rootsAccording to the spread of fire ignition, respectively or as a group to open fire sprinklers-spray, you can reach the deluge system of fire effects and do not have to like the deluge system as an open a blockbuster. In the effective fight fires at the same time, reduce the losses caused by floods.

2, in multiple (Group) nozzle (water cannon) critical fire protection district, only a few cause peripheral (Group) nozzle (water gun) at the opening, water quantity does not exceed the design value, does not appear in the rain system two or several regions at the same time open the resulting water quantity multiplied by more than the design value.

The system with a fixed water cannon fire extinguishing system, has the following advantages:

1. working pressure and low pressure and small metering, water without wounding;

2. the device reaction pressure when water is low, easy to install suspended fixtures;

3, ceiling-mounted or side wall installed at a height overlooking the protected premises, there will be no fire blind spots;

4, take the direct water way, is not subject to space restrictions affected fire effects;

5, system design is simple, convenient installation and maintenance.

Design with two large-space intellectualized active sprinkler system, describes as follows:

1. big space water gun (ZSS-25) large-space intellectualized active sprinkler system

Working principle:

ZSS-25 water cannon to detector, water gun integration settings. When the water cannon fire detected by issuing instructions linked open the appropriate solenoid valve, a fire started the fire pump, driven site with alarm sound and light alarm. And the fire signals sent to the fire alarm controller. Fight the fire source, device and then issue a directive to turn off solenoid valve, stop the pump. If a new source of fire, then the system back to the above action.

ZSS-25 series large space intelligent fire suppression equipment spraying parameters:

Type arguments VCC (v) the standard working pressure (MPa) standard launched water flow (L/S) protection RADIUS (m) height range (m)-inlet diameter (mm) ZSS-20220V0.2MPa5202-625ZSS-25220 V0.6MPa5206-2550

ZSS-25 water cannon range of advantages: more distances, traffic more (protection RADIUS 20m, the working pressure is 0.6MPa, shot water flow to 5L/S, installation height range 6 ~ 25m). It's these characteristics, suitable for installation in the car park, gym, wharves, airports, theatres etc. larger venues.
2. Configuring the intelligent fire suppression equipment in large space (ZSD detector and ZSD-40A nozzle) large-space intellectualized active sprinkler system

Working principle: ZSD detectors available 24/7 detection protection all fire within. In the event of fire, the detector immediately launch detection of fire, after determining fire detector open solenoid valve and output signal to the Ark, and start the linkage between the pump to the nozzle spray for fire suppression. Fight the fire source, detectors and then to signal to close valve, water spray nozzle stops. If there is a new ignition system repeat these actions.

ZSD series large space intelligent fire suppression equipment spraying parameters:

Model parameter start time (S) operating voltage (v) the standard working pressure (MPa) standard launched water flow (L/S) protection RADIUS (m) height range (m)-inlet diameter (mm) ZSD-40 ≤ 30DC12-240.12546-2040ZSD-40A ≤ 30DC12-240.25566-2540
ZSD series large space intelligent fire suppression equipment, is directed at the Convention Center, Stadium, etc. larger space, the entire device consists of two parts: the controller and the nozzle. The controller completed on the protection of the scene of the fire of monitoring and some communication and coordinated control. Fire open valve, pipe full of water, spray nozzle automatically rotate evenly.
Basis of protection place, controller and nozzle design can be one-to-one, namely a controller with a sprinkler head, in this way, a one-to-one correspondence with the nozzle ZSD controller, the controller found fire open valve, only their corresponding nozzle spray. This method is suitable for the protection of the space required is relatively high, and are divided into different zones, each interval smaller (usually 10 square meters).

You can also design, in the one-to-many way, a ZSD controller with multiple jets match (matching number based on the installation site of the actual circumstances of the decision). When the controller found fire, open the valve, and the controller of all the sprayer will spray water at the same time, the entire protection space following waterfall rain. The effectiveness of the fight fire is very high. The way for walk-in tall space buildings against fire. As various Convention Center, Stadium, waiting room, waiting Hall, a large warehouse, etc.

　　

　　

Figure 2 Configuring automatic scan water high-altitude water monitor centralized control system diagram

　　

Figure 16 configuration automatically scan water high-altitude water cannon fire extinguishing equipment for large-space intellectualized active sprinkler system centralized control system workflow (not including repeats the hoist system)

　　


5. design experience:

1. light Hall fire hydrant system settings

Jiangsu Province science and historical and cultural center of the core architecture is called light Hall of the Central light Pavilion building, symbol of historical and cultural center of Jiangsu Province in the sciences is open to the public at large; this is the ideal space for innovative large transparent light House almost did not provide an installable fire facilities, such as the wall of the carrier, then truthfully how fire hydrant system design? common practice have dropped on installation, and buried installation, etc., but it is not meet for fire protection designMargin requirements to 1.10 m, after careful deliberation chosen in airports and other large space has been widely used in construction of "Island-style device station" to install a fire hydrant, design in the center of steel pillar four symmetrical layout on both sides of the device, by around 2 meters, and its sides arrangement combined fire cabinet (following extinguishers), the middle and the rest of the space for ventilation, this equipment after set decorated with beautiful and practical, become embellished light Hall of important factors.

2. big space programme identifying the fire fighting system

Light Hall total height reached 23 meters, three-layer pass high Church "Melody," theatre and Auditorium reached 10 to 14 meters, known as normal spray system sets the height of not more than 8 meters, and the automatic sprinkler system design specifications "on the large space of the spray system settings do not make clear that the project is experiencing large space, there are several disposal methods:

A £ ® no nozzle, the action is not taken into account only the fire hydrant system, but this increased risk of fire, nor can it prevent fire from spreading and reduce fire losses.

B £ ® adopt the deluge system. The current specification is not to set the deluge system places indoor clearance height limit values and making provision for the protection area. When the clearance height exceeds a certain limit, or protection area is greater than a certain value, the deluge system is valid, is reasonable, whether there are concerns about the economy.

D adopt a "large-space intellectualized active sprinkler system", this system has the test data, a practice that has been built or under construction Convention and Exhibition Center, airports, shopping malls and many other great space design and use of fire has been successful experience in the areas of Guangdong has launched today, and a nationwide promotion, has proven to be great space proven extinguishing facilities.

Therefore this design choice for large-space intellectualized active sprinkler system, greatly improving the fire safety, is a reasonable choice. Jiangsu Province science and historical and cultural center is a province in adopting a large space intelligent active sprinkler system engineering, has a special meaning.

3. a garage fire systems programme

The garage is located on the first floor, two wings of the garage and outdoor empathy, above the normal nozzle even if nozzle plate collector is installed, the system sets the heat effect is very poor, in addition to winter outdoor pipelines also have Frost crack danger, fire safety, garage spray system use preaction sprinkler system.

4. spray pipe and the characteristics of nozzles

Design largely adopted extended type nozzle, where there are installed, a garage, and the width is greater than 3.6 m less than 4.4 m small compartment, which greatly saves cost saving nozzle, and to leave room for late decorative installation, particular attention in the design of the strength check of water spray, water does not meet the design strength, making the appropriate encryption.

5. rainwater cistern as outdoor fire water tank

This architectural design by Australia Office design, Australia on rainwater reuse attention to reflect, in the Centre of the North and South sides of the engineering design, four rainwater cistern, each pool 200 m, the total volume of 800 m3, design the outdoor fire water, storage, and calls for these four pool cannot repair vent, which reduces indoor fire water tank capacity, increased use of area, and cost savings building. This Rainwater cisterns can provide green water, and fire water, increasing attention to water resources, the programme is precious, demonstrate the concept of ecological building, architectural taste.

VI. conclusion:

Jiangsu Province science and historical and cultural center as the top ten public works projects in Jiangsu Province, fire-fighting facilities, basically covers, many fire protection system, where the large space intelligent active sprinkler system in the province earlier adopted, on large-area, big space building design of automatic fire-fighting water supply had useful attempt. Has a special meaning.

Reference documents

(1) my understanding of the big space intelligent active sprinkler system design specifications "Jiang Wen source

(2) building design fire protection standard GBJS16-87 (2001)

(3) fire safety design of tall building norms GB50045-95

(4) automatic sprinkler system design specifications GB50084-2001

(5) the great space intelligent active sprinkler system design standard》dbj15-34-20042.