Supply pipe network. When the water changes the pipe pressure below the I set pressure of the pressure of the municipal pipe network or network users, pressure transmitter pipeline pressure feedback to the controller PID frequency conversion control cabinet, adjust the output frequency of inverter through UPC watchdog controller, and start the water pump control pump speed to maintain a constant pressure water supply; if the tap water can not fully meet the (water or all) requirements, the central control center will be adjusted to control multiple frequency pump start stop and pump speed to the maximum extent to meet users requirement of water supply.
Negative pressure technique
The non-negative pressure water supply system adopts the microcomputer frequency conversion technology and the effective negative pressure treatment technology to real the pressure superposed water supply. Through the vacuum compensation system and the I fully enclosed structure, the equipment realizes the direct connection with the water pipe network, and overcomes the adverse influence on the pipe network. The device through the pipe pressure gauge, vacuum and water level signal, and the steady flow compensator in a vacuum suppressor compensator in the test device I for collecting real-time feedback through the microcomputer control device, special vacuum suppressor and the steady flow compensator, suppression of negative pressure generated, ensure that the equipment does not affect the city network.
The system is directly connected with the municipal water supply network, and the water supply will not cause negative pressure to the municipal water supply network. When the municipal pipe network pressure drops even without water, the pump unit can still work, and out of the water until the time variation of the steady flow compensator in the negative (watchdog) or by a simple low level control mode when the water pressure decreases to electrically contact the set lower limit pressure after the automatic shutdown, automatic starting after the runoff. When the power failure occurs, the water pump unit stops working, and the tap water can enter the use’s pipe network through a through pipe. When calling, the unit will automatically turn on and resume normal water supply.
Automatic pressure compensation technique
According to the system resistance characteristic, when the flow rate is bigger, in order to meet the system in maximum water when there is enough head to overcome the resistance of the system general manufacturers in setting the system pressure only by the maximum flow tate of the pressure required to set up, when the small flow of water pressure caused by excessive waste of energy. According to the set pressure automatic regulating system with the change of water, running at low pressure value in the small flow of water, along with the increase of water consumption, the system according to the hydraulic characteristics, the use of the system pressure increases gradually. Thus, the electric energy is saved to the maximum extent.
Scope of application edit:
1. The user original pressurization system energy conservation, consumption reduction transformation.
2. Various types of reclaimed water, sewage and wastewater treatment plants;
3. All types of waterworks, feed pressure pump stations; constant pressure oil system
4. Oil pipelines, oil depots, oil pump stations, oil etc
5. Non-negative pressure water supply equipment is also applicable to all kinds of industrial and mining enterprises production water (such as circulating cooling water, industrial boiler water, industrial boiler water supply system and so on, need constant pressure production water);
6. High-rese buildings, residential areas, enterprises and institutions, such as life, fire water supply system, HVAC, central air conditioning cycle and separation
Advantages and disadvantages, editing advantages
1. Make full use of the city pipe network pressure, greatly save energy.
2. Avoid the two pollution of water
3. Save floor space
4. Save investment
5. Convenient maintenance
6. Save operating costs
7. Keep constant pressure
8. Blackouts, continuous water. Shortcoming
Non negative pressure water supply has certain shor tcomings,because no non negative pressure water tank can store water , but the amount is very small, when the municipal pipe network water, users will soon wi thout water use, so in the choice of non negative pressure water supply, can also consider non negative pressure water supply equi pment box, stainless steel water tank assembly increase based on non negat1 ve pressurewater supply the unit is available from a few to thousands of the reserves, to meet the di fferent needs of cus tomers.
Other water supply seven edit:
1. Pollution: tap water first into the pool or water tank, poor sealing performance, is always contaminated by debris, dirt and even anima I carcasses, will produce scale and bacteria, seriously affects the health of users.
2. High investment: the need to build a pool or water tank, high construction costs.
3. Large land: the need to build a pool or water tank, equipment covers a large space, will occupy a large amount of commercial land, reducing revenue.
4. High energy consumption: because the tap water must be put into the pool or water tank, and then pressurized, resulting in municipal pipe network pressure utilization is zero, seriously wasting energy.
5. Waste serious: most of the pool use of civil structure, often occur seepage, running, leakage and other phenomena, due to serious pollution, but also to use a large amount of regular water for cleaning, waste seriously.
6. Installation: to build a complex water tank or pool, complex I installation, long construction period.
7. High maintenance costs: regular cleaning, disinfection and other maintenance work, late cleaning and maintenance costs. With pressure being squeezed back to the energy storage device, thus completing the process of the low peak to the tank water, when the peak of water drop or municipal pipe network pressure, the release of energy storage device extrusion high pressure chamber water, together with the constant pressure cavity to the user with municipal water replenishment, thus completing the process of peak water to users.
The bidirectional compensator starts to work, the high-pressure water pump outler to the higeh-pressure chamber end to water, when the liquid nitrogen increased gradually full use of the principle of the law of conservation of energy, to achieve the peak water users, to ensure the water in the potto the greatest degree I of compensation I to the user in the network, suppression of negative pressure generated, guarantee I wi thout affecting the municipal pipe network.
Control points edit control technology
No negative pressure water supply system is set to a constant pressure value. If the pipe pressure is higher than the set pressure value, the pressure transmitter pipeline pressure feedback to the frequency conversion control cabinet, tap water direct supply pipeline directly to the user on the user water.
Energy storage
Ni trogen energy storage building preloading is not soluble in water, when the peak of water, energy release I high pressure I chamber water pressure to the extrusion cavity network, make.
