Double closed-loop constant-pressure control system for water supply

Abstract

The invention discloses a double closed-loop constant-pressure control system for a water supply, comprising a water pump, a water supply tube and a frequency converter, wherein a pressure transmitter is installed on the water supply tube close to the water pump; another pressure transmitter is installed at the far end of the water supply tube close to a user; the two pressure transmitters are connected with an intelligent two-path regulation controller; and the intelligent two-path regulation controller is connected with the frequency converter. The double closed-loop constant-pressure control system for a water supply disclosed by the invention is an improvement for a present constant-pressure water supply system, which adequately considers the requirements of middle-end and tail-end users, performs an intelligent tracking and a terminal control parameter compensation and correction via a new technology, and automatically regulates a water supply pressure according to the changes of the water consumptions of the users, so that the middle-end and tail-end users achieve or approach to the design demand of the water supply pressure.

Description

technical field [0001] The invention relates to the field of water supply control, in particular to a double closed-loop constant pressure control system used in various places such as waterworks and residential areas that have requirements on pipeline water supply pressure. Background technique [0002] In the current water supply system, considering the need to ensure constant water pressure, the following water supply schemes are mainly used: 1. Old-fashioned water tower water supply, which is now in the phase of elimination; 2. Pressure tank type constant pressure water supply, low price , but occupying the site, with the increase of water supply, the volume also doubled; 3. The constant pressure water supply system (single-point closed loop) that has been widely adopted in recent years, this water supply method does not consume much water. When the water supply pressure of each user is not big, the water supply basically meets the demand. However, when the water consum...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a double closed-loop constant pressure control system for water supply, which solves the problem that the current constant pressure water supply system cannot automatically adjust the water supply pressure with the change of water consumption, which leads to the problem that the water pressure of the middle-end or end-users is too low

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