Energy-saving no-negative-pressure direct-connected water supply equipment

Abstract

The invention discloses energy-saving no-negative-pressure direct-connected water supply equipment. The energy-saving no-negative-pressure direct-connected water supply equipment mainly comprises a steady-flow compensator, a no-negative-pressure controller, a low-flow pump, main pumps, a flow detection device, a surge tank and a control cabinet. During normal operation, the main pumps supply water through frequency conversion and speed regulation; at the low flow of water using low cycle, when the flow detection device detects that the flow rate is lower than the set low flow rate value and the condition lasts for 5-30 s, the main pumps are stopped, and automatic switching to the low-flow pump is realized for variable-frequency water supply; and after the low flow passes, when frequency conversion of the low-flow pump cannot meet the water supply demand for increased water consumption, automatic switching to the main pumps is realized for the variable-frequency and speed-regulating water supply state, and the low-flow pump stops. The energy-saving no-negative-pressure direct-connected water supply equipment has the benefits that the advantages of compact structure, small occupied area, convenient installation and maintenance, energy-saving operation, sanitary water supply and the like are achieved, the degree of automation is high, the protection functions are complete, and the energy-saving no-negative-pressure direct-connected water supply equipment has a very good development prospect and economical effects when applied to secondary water supply in residence, offices, hotels and the like.

Description

technical field [0001] The invention relates to the technical field of secondary water supply, in particular to an energy-saving non-negative pressure direct connection water supply equipment. Background technique [0002] With more and more high-rise buildings, secondary water supply is becoming more and more common. At present, the secondary water supply for high-rise buildings on the market mainly includes four methods: high-level water tank or water tower water supply, air pressure water supply, frequency conversion water supply and non-negative pressure direct connection water supply. Compared with the previous methods, non-negative pressure direct connection water supply Because it can take advantage of the pressure of the tap water inlet pipe, and has the advantages of less land occupation, less investment, convenient management and maintenance, energy saving and sanitation, it occupies a dominant position in the secondary water supply, but the non-negative pressure d...

AI Technical Summary

Problems solved by technology

At present, the secondary water supply for high-rise buildings on the market mainly includes four methods: high-level water tank or water tower water supply, air pressure water supply, frequency conversion water supply and non-negative pressure direct connection water supply. Compared with the previous methods, non-negative pressure direct connection water supply Because it can take advantage of the pressure of the tap water inlet pipe, and has the advantages of less land occupation, less investment, convenient management and maintenance, energy saving and sanitation, it occupies a dominant position in the secondary water supply, but the non-negative pressure direct connection water supply equipment on the market is not very good. Solve the energy-saving problem of water pump in small flow water supply, because the secondary water supply has the characteristics of large changes in water consumption and uneven water consumption, and often occurs in the case of low flow or zero flow for a long time, such as in the early hours of the morning, but in order to To maintain the pressure of the pipe network, the water pump still needs to run, and the water pump is usually selected according to the design flow and head to meet the design requirements of the most unfavorable working conditions. Not energy-saving phenomenon, but also will affect the service life of the pump

Therefore, some use the air pressure water tank to stop the pump to save energy when the flow rate is small, but the air pressure water tank has problems such as air leakage, air replenishment, unstable water supply pressure, and long-term water stagnation affecting water quality and sanitation.

Images