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The design of building water supply and drainage should meet the requirements of life, production and fire protectionAt the same time, it should also provide convenient conditions for construction and installation, operation management, maintenance and testing, and safety protection.
When the water supply pressure of the outdoor pipe network can only meet the water supply requirements of the lower layer of the building, in order to fully and effectively use the water pressure of the outdoor pipe network, the water supply system of the building is often divided into two water supply areas.
Main advantage: The technical reason for using the zoning system is that the water pressure in the pipe network does not exceed the pressure that the water pipe can withstand. A single pressurization often makes the pressure at the front end of the pipe network too high.
The zonal water supply system is mostly used in large and medium-sized cities with relatively vast areas, obvious changes in the terrain, clear division of urban planning functions, and phased construction conditions.
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Just now in boiling water, this digital policy should be connected in series, some differences in parallel, can still be brought in, when you get it, it can be put into circulation is all the essays, six mobile babies are not many anyway.
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The difference between the water pump water supply in series and the water supply in parallel is the high and low pressure.
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If you supply water in a high-rise building in series, the pressure will be more sufficient, but if it is in parallel, it will not be enough.
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The main difference between them is that when overhauling and failing, the fault point can be reasonably distinguished.
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In the process of using the software, let's take a look at the two different ways of specific high-rise water supply, because this way can change the water environment in which we use.
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If you can't give me water, you can tell you to divide the mobile phone, and the main difference between the water and the water is almost the same, and there is no big difference.
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Zonal water supply: the pressure required in each district is different, such as the building with more than six floors (exclusive) in large, medium and small cities, the water supply pressure is not the same, the water supply below six floors (inclusive) belongs to the municipal pipe network water supply, and the water supply must be zoned above six floors, and the required pressure ratio.
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The high-rise one is built like a series to whom, and there is a difference between that one.
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If not, he should make a distinction mainly based on one of his prefectures.
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Zoning is the main difference between series and parallel water supply, that is, if there is a problem, will it not work all at once?
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The number of vertical partitions of water supply in high-rise buildings is generally connected in series.
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Wow, can you give water? I feel that this is necessary, you can give water, but if you don't give water, how can you supply heat?
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Due to the high height of high-rise buildings, the water pressure in the outdoor water supply network often cannot meet the water pressure requirements of the water points on the higher floors of the building. Therefore, it is necessary to set up booster equipment and high water tanks to meet the water volume and water pressure requirements of the upper floors. In addition, due to the high height of the building, if the water supply system is not vertically partitioned, the ground floor sanitary appliances will inevitably withstand a large hydrostatic pressure, which will bring a series of problems, mainly manifested as:
The flow rate of the lower faucet is too large, and the water flow is splashing, which not only causes waste, but also affects the use;
The flow rate of the upper faucet is too small, and even negative pressure suction occurs, which may cause backflow pollution;
Due to the large pressure of the lower pipe network, water hammer is easy to occur when the valve is closed, which will cause noise and vibration, and damage the pipe network.
The lower valves are easy to wear, causing leakage, increasing the maintenance workload, and if the pressure exceeds the rated working pressure of the pipes and equipment, it will cause damage to the pipes and equipment.
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It is conducive to increasing the water pressure and reducing the distance.
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Zoning is based on pressure and flow calculations, which are the most basic calculations.
3 3 5 of the Code for Design of Building Water Supply and Drainage (GB50015-2003) stipulates that the domestic water supply system of high-rise buildings shall be vertically partitioned, and the vertical partition pressure shall meet the following requirements:
The hydrostatic pressure at the minimum water distribution point of sanitary appliances in each zone should not be greater than;
If the hydrostatic pressure is greater than the household pipe (or water distribution horizontal pipe), it is advisable to set up pressure reduction or pressure regulating facilities;
The water pressure of the most unfavorable water distribution point in each zone should meet the water pressure requirements.
The water supply pressure of the entrance pipe of the residential building should not be greater than.
For the domestic water supply system of buildings with a building height of no more than 100m, it is advisable to adopt the water supply method of vertical zonal parallel water supply or zonal pressure reduction; For buildings with a building height of more than 100m, it is advisable to adopt a vertical series water supply method.
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(1) Zonal depressurized water supply mode There are two forms of zonal depressurized water tank decompression and zonal depressurized valve decompression.
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