Relatively developed countries, the gear pump industry in our country started late, but the source pointed out that China's gear pump, you can recommend the construction of professional high-rise residential basement connectivity. Industry may use the advantage of late development by leaps and bounds in the pump industry, There are many examples of products that realize technological leaps and bounds, such as the double-shell high pressure boiler feed pump of Shanghai Pump Factory, the slurry pump of Shijiazhuang Pump Factory, the screw pump of Tianjin Pump Machinery Group Co., Ltd. These products range from technical level On speaking with the international level close to some companies use foreign advanced technology to transform their own series of products in order to achieve technological leaps.Such as Shenyang Pump Factory to use advanced foreign technology to improve AY-type pump rotor rigidity, anti-bite material applications AY-type pump to replace the Y-pump occupy most of the domestic pump market in the field of high-tech industries, as long as technically even a small step ahead, it is possible to occupy most of the market in this area. Therefore , 20 years of reform and opening up, China's pump industry has achieved technological leaps and bounds, but also only by implementing technology by leaps and bounds, can Broaden the gap with developed countries abroad, to catch up with or exceed the advanced level in foreign countries. In a number of buildings in the plot, if each building has a pump room, not only increased the amount of investment, and equipment maintenance and management Need to invest a lot of manpower and material resources, it is uneconomical.In this case, the general set to focus on the pump room, centralized pump room settings can refer to Shanghai "civil building water fire extinguishing system design code" (DGJ08-94-2001) Article 6.5.3 of the relevant provisions: gear pump room service radius should not be greater than 150m, pump room water pressure usually should not exceed 0.45MPa. In the actual design, should be flexible according to the different conditions of each plot (1) For example, a factory plot, the red line within the scope of a number of multi-storey factory buildings, multi-storey dormitory, multi-storey office building .In this case the centralized pump room is more economical, to meet the water supply service radius is not greater than 150m under the premise of the plant load center in the appropriate location, you can set up a centralized pump room. Taking into account the plant generally covers a larger area, using a single centralized pump room located outside the building is more reasonable. (2) For example A multi-layer or small High-rise residential area, according to the developers of different development stages of real estate, combined with the height of the floor and the size of the reservoir to set up one or more centralized pump room.Because of the larger number of residential area, so to the water pump room Covers a relatively large area.For a residential area, the centralized pump room is located in the lower floors of commercial and residential buildings or underground garage than in the building set up single gear pump room more economical.Shanghai " Residential design standards "(DGJ08-20-2001) Article 1, Article No. 0.0.19 stipulates: There should be no sewage pipes within the feed water pump through." Secondary Water Supply Facilities Health Regulations "(GBl7051-1997) Article 5.5: Storage Within 10m around the pool, there shall be no pollutants such as water seepage pits and rubbish piled up, etc. There shall be no sewage pipes and pollutants within 2m around the water tank, and the available effective area of ​​the centralized pump room located in the basement is quite limited according to these conditions. In general, it is more reasonable to set centralized pumping stations in underground garages because the garages in the garage are large, the shear walls are small, the sewer lines around the pumping stations are small, and the area available for centralized pumping stations is large. (3) For example, a high-rise residential building District if the basement of adjacent building Connected, then it should not be set centralized pump room, because the high-rise residential pump room water pressure is generally greater than 0.45MPa, centralized pump room after the pump pipe set in the trench, the overall impact on the overall district pipeline, but also a wide range of use Pipe ditch, but also greatly reduces the quality of the district.Centralized gear pump pipe buried in the casing, is not conducive to the maintenance and maintenance of the pipeline.In Shanghai, for example, the residential water supply pipelines, property belongs to developers, residential Of the water supply pipelines, the property rights belong to the water company, and the water company based on years of accumulated experience in operation, set the overall pipeline has its own set of industry standards, so in the basement is not connected, it is not desirable to set centralized pump room. Adjacent to the basement of the building is connected, then you can set centralized pump house, because the pump pipe inside the house to take control, and residential maintenance and maintenance of the pipeline is much easier, but not on the overall community district pipeline so if the high-level Residential areas should be concentrated
