【 Weak current College 】 fire water tank design---Power By 【 China power house network 】

Recent some fire directly to people's lives and the country caused serious damage to property, more and more people of adequate attention, States are increased fire regulatory advocacy and implementation of the work, but the fire water tank for fire fighting water supply system of a technology guarantee measures, often referred to by some neglect, greatly increases the risk of fire. Here, this article on the design of fire water tank.
1. the role of fire water tank
We all know that all the fires have an initial process of fire, the fire proved that fight the fire in the early days, for avoid larger fire is crucial, fire water tank used for the storage of fire fighting water early. Fire water storage tank, on the one hand, the fire water pipe is filled with water, saves the fire pump on full time after pipeline, to fight fires won the time. Another aspect, roof set booster, voltage system and the water tanks can guarantee the full water column of multi-function, for the success of the fight in the early days of fire has a decisive role.
2. set the conditions of fire water tank
Fire water tank should be set in any case, clear fire design code provides as follows:
2.1 "architectural design fire protection standard article 8.6.3 stipulates: set the high pressure water supply system of the building, such as to guarantee the most negative point fire hydrants and fire sprinkler equipment of water and water pressure may not fire water tank. To set up a temporary high pressure water supply system of the building, should fire water tank or air pressure tank and water tower.
2.2 senior civil building design fire protection standard article 7.4.7 stipulates: uses high pressure water supply system, you can not set high fire water tank, when adopting temporary high pressure water supply system, should be set to high fire water tank.
In addition, the regional concentration of atmospheric-pressure water supply system, such as to guarantee the most negative point indoor hydrant and automatic sprinkling water and water pressure equipment may not fire water tank. But the regional focus of temporary water supply system under high pressure, the roof should be set at the beginning of supply fight fire with fire water tank of water.
3. fire water tank set location and height
Fire water tank set location and height, clear fire design code provides as follows:
3.1 "architectural design fire protection standard article 8.6.3 provision should be in the building of the highest parts of the set gravity self-leveling fire water tank.
3.2 senior civil building design fire protection standard provisions of article 7.4.7.2: high fire water tank of setting height should guarantee the most negative point fire hydrant hydrostatic pressure. When building height not exceeding 100m, high-rise buildings the most negative point fire hydrant hydrostatic pressure should not be less than the height when building 0.07MPa exceeds 100m, high-rise buildings the most negative point fire hydrant hydrostatic pressure should not be lower than 0.15MPa. When high fire water tank does not meet the requirements of the static pressure, you should set booster facilities.
4 fire water tank volume calculations
Fire water tank used for the storage of fire water in the early days of fighting, the fire protection design specifications clearly defined as follows:
4.1 "architectural design fire protection standard article 8.6.3 stipulates: indoor fire water tank (including regional water supply system of partition tank) should be stored 10min fire water consumption, water consumption when the room fire does not exceed 25L/s, the calculation of fire water tank storage capacity exceeds 12m3, still use 12m3; when indoor fire water over s, 25L/water tank for fire fighting water exceeds the calculated 18m3, can still be used 18m3.
4.2 senior civil building design fire protection standard section 7.4.7.1 stipulates: the fire high fire water tank storage capacity, a class public buildings should not be less than 18m3; second class public building and a class of residential buildings should not be less than 12m3; second class residential buildings should not be less than 6.00m3.
Article No.: parallel 7.4.7.3 water-supply mode partition fire water tank capacity and high fire water tank.
In addition, in combination with other water tank for fire fighting, in addition to meet its own fire-fighting water supply, but also meet the other water reserve.
5. fire water tank set of additional requirements
5.1 fire water and other water tanks, should be combined fire water does not make use of technical measures.
5.2 fire, the fire pump supply of fire fighting water, you should not enter the fire water tank, fire water tank outlet check valve on the set.
5.3 fire water tank used to live, production pipeline filled with water.
5.4 high-rise building fire water tank should be two, in a water tank maintenance, will still be able to save the necessary fire emergency water and should be used in the water tank at the bottom of the tube connection, contact contact tubes set valve, the valve is normally open state.
5.5 fire water tank should be and other combined with water tanks, tank of water often in a State of the mobile updates to waterproof varying bad, other water can siphon head drilling and other measures of supply. 5.6 annex configuration fire water tank and fire water tank installation, can reference the General water supply tank, this is no longer column text description.
6. fire water tank of material selection
Currently suitable for water tank there are many kinds of materials, the most common material is steel, stainless steel, reinforced concrete, glass, enamel steel and other materials, but they each have advantages and disadvantages.
6.1 carbon steel plate welded steel plate tanks, inner surface of the required preservative treatment, and corrosion-resistant materials shall not hinder the health requirements.
6.2 reinforced concrete tanks on-site perfusion, heavy, long construction period, and pipe edge places easy to leak, cleaning surface material is easy to fall off.
6.3 enamelling tank water quality from pollution, can prevent plate corrosion, easy to install, not subject to restrictions for civil progress, reasonable structure, strong and beautiful, no deformation is not leaking, wide applicability.
FRP tanks from 6.4 architectural space restrictions, adaptability, light weight, no corrosion, no leakage, appearance, long life, good insulation properties, safe and reliable, easy installation, cleaning and maintenance simple.
6.5 stainless steel water tank, do not pollute the water quality, corrosion-resistant, not leaking, the clean is convenient, the weight is light, not breeding algae, easyInsulation, beautiful, easy, but the price is high.