Photovoltaic drive network pressure-superposing (non-negative pressure) variable-frequency water supply equipment

Abstract

The invention discloses photovoltaic drive network pressure-superposing (non-negative pressure) variable-frequency water supply equipment and a water supply method, comprising a distributed solar generating system, a photovoltaic water supply scheduling control system, a water pump unit, a non-negative pressure water supply system and a water supply system. The water supply method includes the steps: 1, a solar photovoltaic module converts solar energy into electric energy, a header box collects the electric energy converted by the solar photovoltaic module and delivers the collected electric energy to a distribution box for the purpose of storage, and the distribution box distributes the stored electric energy to the controller; 2, the controller distributes the stored electric energy delivered by the distribution box; 3, when operating, the water pump unit relays to boost water pressure of a municipal tap water supply pipe through fitting of a non-negative pressure flow-stabilizing tank and a negative pressure inhibitor, so that the water is delivered from a building bottom to a high-level water adjusting and storage tank; 4, the high-level water adjusting and storage tank stores part of tap water delivered by the water pump unit, for the purpose of emergency use and directly delivers the other part of the tap water to users for use. The photovoltaic drive network pressure-superposing (non-negative pressure) variable-frequency water supply equipment is energy saving and environment friendly, with application cost greatly lowered.

Description

technical field [0001] The invention relates to water supply equipment, in particular to a photovoltaic-driven pipe network superimposed (no negative pressure) frequency conversion water supply equipment and a water supply method. Background technique [0002] The pipe network superimposed (no negative pressure) frequency conversion water supply equipment superimposes the original pressure of the urban tap water pipe network without generating negative pressure on the tap water pipe network, and uses the public power grid to drive the frequency conversion pump group to supply users with relay boost. [0003] The existing pipe network superimposed frequency conversion water supply equipment has the following problems: [0004] 1. The power consumption is large, and the water pump needs to maintain the pressure of the pipe network system. It mainly relies on the electric power of the public grid to drive the motor to work. The equipment is often in the state of frequency conve...

AI Technical Summary

Problems solved by technology

[0004] 1. The power consumption is large, and the water pump needs to maintain the pressure of the pipe network system. It mainly relies on the electric power of the public grid to drive the motor to work. The equipment is often in the state of frequency conversion operation, the downtime is very small, and the long-term operation consumes a lot of energy;

[0005] 2. Residents cannot eat water when the public power grid is out of power;

[0006] 3. In response to different water intakes of users, the operation curve of the water pump is constantly changing and adjusted, and the water pump does not operate at the highest efficiency point;

[0007] 4. The system is directly connected to the pipe network and has no water storage function. Residents in the community cannot eat water when the tap water is repaired or the water is cut off;

[0008] 5. Due to the direct water intake on the tap water pipe network and the high dependence on the tap water pipe network during the peak period, the equipment has certain requirements for the water pump pressure of the urban water supply company's water plant and the urban pipe network, and the burden of municipal tap water is large. Users in areas with thin roads, low pressure or frequent power outages, tap water maintenance or other reasons for water outages or regular water supply are not suitable or have defects

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