High-temperature-water heat exchange low-temperature-water direct connection heating system

Abstract

The invention discloses a high-temperature-water heat exchange low-temperature-water direct connection heating system. The system is mainly composed of a plate type heat exchanger, a heating variable frequency pump, a circulating pump, a direct connection heating area, a heat exchange heating area and a control cabinet. A primary side connector of the plate type heat exchanger is connected with a primary water supply pipe and a primary water returning pipe, and a check valve is arranged on the primary water returning pipe; a direct connection heating water supply pipe is further arranged at the position, in front of the check valve, of the primary water returning pipe and is connected with the direct connection heating area, and the direct connection heating area is connected with the primary water returning pipe through a direct connection heating water returning pipe; a heating variable frequency pump is arranged on the direct connection heating water supply pipe; and an electromagnetic cut-off valve, a switch valve, a pressure reduction control valve and a flow adjusting valve are arranged on the direct connection heating water returning pipe. The system has the beneficial effects that zone heating with high-temperature-water heat exchange heating and low-temperature-water direct connection heating combined is adopted, and waste heat of high-temperature-water heat exchange is effectively utilized by direct connection heating, so that investment and land occupation of the heat exchanger are saved, the heat energy utilization rate is improved, the running cost is reduced, and the system has the good energy-saving and emission-reduction effects and the good social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of heating, in particular to a high-temperature water heat exchange and low-temperature water direct connection heating system. Background technique [0002] Conventional heating systems are generally equipped with heat exchange stations, and the heat exchange stations directly return the heat source return water to the municipal heating return water pipe network after heat exchange by the heat exchanger, but the heat source return water temperature is generally in the range of 40°C to 60°C, and some If the temperature is above 70°C, if the return water of the heat source at such a temperature is directly refluxed, there is no doubt that the heat energy has not been fully utilized, which is not conducive to energy saving and consumption reduction. Contents of the invention [0003] The object of the present invention is to provide a high temperature water heat exchange and low temperature water direct conn...

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Problems solved by technology

[0002] Conventional heating systems are generally equipped with heat exchange stations, and the heat exchange stations directly return the heat source return water to the municipal heating return water pipe network after heat exchange by the heat exchanger, but the heat source return water temperature is generally in the range of 40°C to 60°C, and some If the temperature is above 70°C, if the return water of the heat source at such a temperature is directly refluxed, there is no doubt that the heat energy will not be fully utilized, which is not conducive to energy saving and consumption reduction.

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