Constant frequency of water supply systems require draconian laws to maintain constant pressure water supply system principles and standards Frequency constant frequency current water supply system as advanced secondary pressurized water supply equipment, can take advantage of the initial pressure municipal pipe network, both to improve efficiency, but also reduces the energy consumption, energy saving effect is remarkable, can effectively solve the city's secondary water pollution hazard problems in many of our cities have been widely used. But no industry standard for market confusion. The publication by the Beijing Science and Technology Development Co., Ltd. Granville Paige editor, the Ministry of Housing and Urban Research Institute of Standards Organization Standards Press of China fixed the issue of release of the implementation of these two industry standards, which can effectively regulate the healthy development of the whole negative pressure water industry promote negative pressure water equipment to get a better application. Recently, the Ministry of Housing and Urban-Rural Development to No. 183 and No. 189 approved Notice "box no negative pressure water supply equipment" and "no negative supply voltage compensation device" for the urban construction industry product standards. Two standard since June 1, 2009 implementation. Constant frequency of water supply system technology features: 1. Health pollution: constant frequency of water supply system is fully sealed operation, foreign matter can not enter the pipeline system; not in direct contact with the air, membrane filtration device will automatically qi means airborne bacteria block, do not enter the system; flow regulator made of stainless steel, will not breed algae, do not pollute the water to really meet the people growing demands for drinking water. 2. Do not waste energy: constant frequency of water supply system is directly connected with the water pipe network, on the basis of the existing pipe network superimposed on the pressure required pressure difference, how much less, make up, make full use of the pipe network and pressure, will not wasteful equipment and energy, in line with the national energy requirements. 3. The constant frequency of water supply system is easy to manage, simple: direct pipe pressurized water supply equipment for the intelligent control of automatic operation, the device automatically shut down electricity, water, calls runoff automatically boot; the fully enclosed design, no pollution, so no troublesome cleaning work. Meet environmental requirements. 4. less investment, low operating costs: Because no need to build reservoirs or water tanks, it saves a lot of construction investment, and because of the use of the water pipe network and pressure, without pressure from zero, so the pressure pump selection type is smaller, reducing investment in equipment. Because of the pressure pump selection is small, reducing investment in equipment. Because of the pressure pump selection is small, and the use of multi-pump operating in parallel, at low water peak a pump to meet the water needs of other pumps will start when the water peak, so the preparation process is running very low energy consumption, reduce operating costs. 5. Installation is simple: direct pipe pressurized water supply equipment, complete sets of users, the site simply assembled devices connected into the outlet flange to the construction cycle is short, easy to install. 6. Small footprint: because you do not build pools or tanks, significant savings in floor space, according to the user's field conditions can be designed to set up a different style or horizontal installation, easy maintenance. 7. The power supply can be maintained: Since the device has a public water supply pipeline network directly connected with the user, although the pressure pump to stop working during a power outage, but users still can maintain the low area of ??water, even in the disruption of water supply, the user can still balancer by regulators to maintain water in a short supply. 8. A high degree of automation: using PID closed-loop regulation, high precision constant pressure, pressure fluctuations. Overload, short circuit, overcurrent and other automatic protection function, the device is stable, reliable, easy to use and maintain. Life constant frequency of water supply system of a range of applications, new residential buildings or other water. 2, has built a pond, a water supply tank in order to eradicate water pollution reinvented. 3, industrial and mining production, domestic water. 4, long-distance water supply in the middle of urban water supply system compressor stations, compressor stations regional water supply network, the high pressure area centralized water supply station. Constant frequency of water supply system is mainly technical indicators Flow range 0--5000m3 / h pressure range 0--2.5MPa precision pressure regulator to control the power 0-280Kw ≤0.01MPa ambient temperature 0 - + 40 ℃ Relative humidity ≤90% or less (electricity control section) Power 380V (1 ± 10%) 50Hz ± 2Hz ??steady flow compensation 0.5m3--100m3 1. Health pollution: Constant frequency of water supply system is fully sealed operation, foreign matter can not enter the pipeline system; no air directly contact membrane filtration device, automatic air supply device will block airborne bacteria, do not enter the system; flow regulator made of stainless steel, will not breed algae, do not pollute the water to really meet the people growing demands for drinking water . 2. Do not waste energy: constant frequency of water supply system is directly connected with the water pipe network, on the basis of the existing pipe network superimposed on the pressure required pressure difference, how much less, make up, make full use of the pipe network and pressure, will not wasteful equipment and energy, in line with the national energy requirements. 3. The constant frequency of water supply system is easy to manage, simple: direct pipe pressurized water supply equipment for the intelligent control of automatic operation, the device automatically shut down electricity, water, calls runoff automatically boot; the fully enclosed design, no pollution, so no troublesome cleaning work. Meet environmental requirements. 4. less investment, low operating costs: Because no need to build reservoirs or water tanks, it saves a lot of construction investment, and because of the use of the water pipe network and pressure, without pressure from zero, so the pressure pump selection type is smaller, reducing investment in equipment. Because of the pressure pump selection is small, reducing investment in equipment. Because of the pressure pump selection is small, and the use of multi-pump operating in parallel, at low water peak a pump to meet the water needs of other pumps will start when the water peak, so the preparation process is running very low energy consumption, reduce operating costs. 5. Installation is simple: direct pipe pressurized water supply equipment, complete sets of users, the site simply assembled devices connected into the outlet flange to the construction cycle is short, easy to install. 6. Small footprint: because you do not build pools or tanks, significant savings in floor space, according to the user's field conditions can be designed to set up a different style or horizontal installation, easy maintenance. 7. The power supply can be maintained: Since the device has a public water supply pipeline network directly connected with the user, although the pressure pump to stop working during a power outage, but users still can maintain the low area of ??water, even in the disruption of water supply, the user can still balancer by regulators to maintain water in a short supply. 8. A high degree of automation: using PID closed-loop regulation, high precision constant pressure, pressure fluctuations. Overload, short circuit, overcurrent and other automatic protection function, the device is stable, reliable, easy to use and maintain. Constant frequency of water supply system application ◆ New domestic water or buildings, residential quarters. ◆ has built a pond, a water supply tank in order to eradicate water pollution reinvented. ◆ industrial and mining production, domestic water. ◆ long-distance water supply in the middle of urban water supply system compressor stations, compressor stations regional water supply network, the high pressure area centralized water supply station. Constant frequency of water supply system is mainly technical indicators Flow range 0--5000m3 / h pressure range 0--2.5MPa precision pressure regulator to control the power 0-280Kw ≤0.01MPa ambient temperature 0 - + 40 ℃ Relative humidity ≤90% or less (electricity control section) Power 380V (1 ± 10%) 50Hz ± 2Hz ??steady flow compensation 0.5m3--100m3 constant frequency of water supply system: constant frequency of water supply system, is an ideal energy-constant frequency of water supply systems, energy-saving effect Well, compact, small footprint, stable and reliable operation, long life, flexible design, adjustable water pressure, flow big or small, can replace the towers, water tanks and all kinds of pressure water supply equipment, can be completely eliminating secondary water pollution. Water pressure equipment is also used to transform the original old pumping station equipment, the same can be achieved after the transformation of energy efficient, automatic constant pressure water supply purposes. Constant voltage constant frequency conversion water supply system schematic full use of existing water supply system water pipe network pressure energy, water demand in the same situation, you can use a relatively small power pumps and control equipment, and small flow of water at night By using water pressure water directly without the need to start the pump. Compared to the traditional pool of constant frequency of water supply system can save a lot of energy running costs and investment costs. Constant frequency of water supply system using pumps and water pipe network directly connected to a pump with a pressure regulator tank water storage devices, eliminating the use of vacuum to eliminate the negative pressure within the pipe network, making full use of the water pipe network is directly connected with the pressure regulator tank water storage devices as pumps, vacuum to eliminate the elimination of the negative pressure within the pipe network, making full use of the original pressure of the water pipe network on the basis of the secondary pressurized water supply, the device only achieve the purpose of increasing (and did not affect other users of the water pipe network), but also saves build pools, water tanks cast times, at the same time to ensure the quality of the pipe network (no secondary pollution), but also make full use of the original pipe network water pressure, the energy saving effect is extremely significant, up to 50%. Constant frequency of water supply system in the win automatic intelligent control, with a variety of protection and control functions, can achieve true unattended.