A hydraulic decoupling tank for central heating system

Abstract

The invention discloses a hydraulic decoupling tank for a central heating system. The hydraulic decoupling tank comprises a tank body. A heat source water-supply pipe joint and a heat source water-return pipe joint are respectively distributed on the upper portion and the lower portion of one side wall of the tank body, a heat supply network water-supply pipe joint and a heat supply network water-return pipe joint are respectively distributed on the upper portion and the lower portion of the other side wall of the tank body. The heat source water-supply pipe joint and the heat supply network water-supply pipe joint are arranged at the same level, and the heat source water-return pipe joint and the heat supply network water-return pipe joint are arranged at the same level. An upper end socket and an air bleeder are respectively arranged on the top of the tank body, and a lower end socket and a blow-off valve are respectively arranged at the bottom of the tank body. The hydraulic decoupling tank decouples a heat source water system and a heat supply network system, and circular flow of the heat supply network is adjusted according to changes of heat load, so that an energy saving effect of a distributed variable-frequency water pump heating system is functioned fully and energy consumption in transmission and distribution of the heating system is reduced.

Description

technical field [0001] The invention relates to heating system equipment, in particular to a hydraulic decoupling tank used in a central heating system. Background technique [0002] At present, most modern cities use central heating systems for heating in winter, and the circulating water pumps are centrally installed at the heat sources, and the circulating water pumps are selected according to the farthest and most unfavorable users to overcome the resistance of the heat source, heat network and heat user system. At the near end of the heating system (near the heat source) heat users, an excessive resource pressure head is formed. In order to meet the circulating flow rate of the near-end heat users, a flow regulating valve must be set to consume the excess resource pressure head. This unnecessary throttling loss is caused by the design method of the circulating water pump itself. [0003] In recent years, the distributed frequency conversion water pump system used in Ch...

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Problems solved by technology

However, in practical applications, the minimum flow of the hot water boiler at the heat source in the central heating system cannot be lower than 70%, resulting in the distributed frequency conversion water pump heating system not being able to give full play to its energy-saving advantages, while the adjustment of the circulation flow of the heating network The water flow in the boiler changes correspondingly, making the operation of the boiler unstable

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