Multi-path full-compensated type tank-type non-negative pressure-superposed water supply equipment

Abstract

The invention discloses multi-path full-compensated type tank-type non-negative pressure-superposed water supply equipment, which comprises a negative pressure inhibiting fluid director, a flow stabilizing tank, a full-compensated type compensating tank, a negative pressure inhibitor, a large-capacity small-flow high pressure compensating tank, variable frequency water supply pumps, a compensating booster pump, a plurality of pressure sensors and a controller. According to the water supply equipment provided by the invention, the generation of negative pressure is inhibited from a plurality of paths; by virtue of the compensating tank, 100% compensation can be achieved; the water supply equipment, as non-negative pressure-superposed water supply equipment, which is capable of compensating steady pressure for a long time at a large flow when pressure of a municipal pipe network drops, is capable of isolating air and is free from dead water during running; a water supply mode can be automatically adjusted regardless of the status of water supply pressure of the municipal running water pipe network, and under the precondition of guaranteeing constant water pressure at a user side, pressure-superposed water supply can be achieved by virtue of the pressure of the original pipe network on the basis of the principle of compensating for any deficiency; and the water supply equipment can run in accordance with the principles of saving energy to the greatest extent, achieving full compensation, avoiding the generation of negative pressure, avoiding a dead angle in a water flow and isolating air.

Description

technical field [0001] The invention relates to a multi-channel fully compensated tank-type non-negative pressure superimposed pressure water supply equipment. Background technique [0002] The non-negative pressure superimposed water supply mode has been increasingly used in urban secondary water supply, and its energy-saving effect has been generally recognized. However, most of the current non-negative pressure water supply equipment has the following technical problems: [0003] 1. When the pressure of the municipal pipe network drops, the compensation capacity of the water supply equipment is small and the compensation time is short. Either a negative pressure will be generated on the municipal pipe network or the water supply equipment itself, or it can only be shut down to prevent negative pressure. The former is extremely destructive to the pipe network and equipment, and the latter seriously affects the water consumption of users. [0004] 2. Under the low-flow wo...

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Problems solved by technology

The former is extremely destructive to the pipe network and equipment, while the latter seriously affects the water consumption of users

[0004] 2. Under the working mode of small flow rate, the effective volume of the air pressure tank is small, which cannot effectively supply water with small flow rate, resulting in frequent start and stop of the frequency conversion feed water pump, large changes in pipe network pressure, and large energy waste

[0005] 3. The water is stored in the non-negative pressure equipment for too long, and there is stagnant water in some links, which is easy to deteriorate; or the water is in contact with the air for a long time in the non-negative pressure equipment, causing drinking water to be polluted and affecting the water safety of residents

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