Large temperature difference heat exchanger for primary heat network heat exchange station of heating system

Abstract

The invention discloses a large-temperature-difference heat exchanger of a heat exchange station of a primary heat supply network of a heat supply system. The large-temperature-difference heat exchanger is formed by connecting a heat exchange component, a flow state distribution component and a connection device. The plate-type heat exchange component is provided with a heating medium inlet, a heating medium outlet, a refrigerant inlet and a refrigerant outlet. The flow state distribution component is composed of a spraying pipe, a fluid nozzle, a suction chamber, a mixing pipe and a diffuser which are connected in sequence. The connection device comprises a water supply main pipe, a spraying valve, a mixed water inlet pipe, a mixing valve, a return water introduction pipe, an injection valve, a sending-out pipe, a butterfly valve, a water return main pipe, a water delivering pipe and a water return pipe. The heat exchanger can be applied in the heat supply system taking water as heating media and refrigerants, installed on the primary network side, and used for replacing a traditional heat exchanger. The flow state distribution component of a specific structure and the connection device of a specific structure are arranged and organically connected with the plate-type heat exchange component, so that the problems of hydraulic disorder and overlarge reactive power consumption of the heat supply system are solved by reducing the transmission and distribution flow, and the problem that overlarge pressure-head losses are caused by too many accessories is also solved.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to a heat exchanger with a large temperature difference in a heat exchange station of a primary heat network of a heating system. Background technique [0002] The heat source circulation pump of the traditional heating system bears the internal resistance of the heat source, the resistance of the entire heating network and the resource pressure head of each user. In order to meet the resource pressure head of the farthest end user, the head of the heat source circulation pump is often increased, using a relay pump or adding a booster pump at the end, while the near-end user uses a regulating valve to consume the excess resource pressure head. Unreasonable hydraulic regulation can easily lead to an unreasonable operation mode of "large flow and small temperature difference", which not only fails to solve the problem fundamentally, but also causes the flow of the heating system to exce...

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Problems solved by technology

[0003] Based on the problems existing in the above-mentioned prior art, the present invention provides a heat exchanger with a large temperature difference in the primary heat exchange station of the heating system, which can solve hydraulic imbalance, excessive consumption and too many accessories in the heating system by reducing the transmission and distribution flow The problem of excessive head loss

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