Heating system based on hot water

Abstract

The invention discloses a heating system based on hot water. A water return pipeline is connected with the inlet end of a boiler through a main heating network circulating pump, a water supply pipeline is connected with the outlet end of the boiler, the water return pipeline of a main heating pipe network is connected with the inlet end of the boiler through a first-grade dynamic balancing set return water overflowing device and the main heating network circulating pump, the water supply pipeline is communicated with the input-end water inlet of a heat exchanger through a first-grade dynamic balancing set inlet water overflowing device and a main inlet water circulating pump, and then the water return pipeline of the main heating pipe network is communicated with the input-end water outlet of the heat exchanger through a primary balance valve. The output-end water outlet and the output-end water inlet of the heat exchanger are connected with water supply pipelines and water return pipelines of branch heating pipelines respectively, an output-end circulating pump is communicated with the water return pipeline of each branch heating pipeline in series, the outlet end of a user heating pipe network is connected with a water return pipeline of a branch heating pipe network through a second-grade dynamic balancing set return water overflowing device and a secondary balance valve, and a water inlet pipeline of the branch heating pipe network is connected with the inlet end of the user heating pipe network through a second-grade dynamic balancing set inlet water overflowing device and an input-end circulating pump. The heating system based on the hot water can decrease the flow of a main pipe of a heating network, reduces the design diameter of the main pipe, and saves construction cost of the heating network.

Description

technical field [0001] The invention relates to a heating system based on hot water. Background technique [0002] In the traditional heating system, it is customary to set the secondary circulating water pump at the heat exchange station (heat exchanger), and its function is not only the circulating water pump of the heat exchange station (heat exchanger) heating network, but also the circulating water pump of the secondary heating network. In the design and selection of circulating water pumps, the circulation flow is equal to the system design flow, and the lift is equal to the sum of heat source resistance loss, heat network resistance loss and end heat user's resource pressure head. The type selection of the water pump works in a large-flow operation mode, and a considerable surplus flow is also given. This is undoubtedly an artificial increase in the heat medium transmission power of the system, and artificially uses various adjustment methods to consume the excess ele...

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Problems solved by technology

However, at present, while promoting heat metering, the application of matching new technologies and methods of heating networks has not received corresponding attention; the heating network of new buildings is still designed and constructed according to the principle of constant flow, and the user's adjustment behavior at any time will cause the entire The fluctuation of the heating network causes the imbalance of the thermal and hydraulic systems, thus affecting the heating quality of the building

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