Balanced water pump having functions of pressure boost and pressure reduction

Abstract

The invention discloses a balanced water pump having functions of pressure boost and pressure reduction, which is a balanced water pump which can boost pressure and reduce pressure and is applied to heat supply circulation of heating zones for high-rise buildings. The problems that the overpressure accident of a heat supply system occurs because pressure reduction is carried out by adopting a pressure-boosting pressure-reducing valve of a heat supply pump during the heat supply of heating zones for high-rise buildings are solved. The balanced water pump adopts the technical scheme that an upper impeller chamber (2) in a circular truncated cone shape and a lower impeller chamber (4), a water inlet vortex chamber (3), a water outlet vortex chamber (5), an upper water pump inlet (6), a lower water pump outlet (9), an upper water pump outlet (7), a lower water pump inlet (8), an impeller shaft (10), an upper impeller (11), a lower impeller (12) and the like are arranged in a water pump body (1). Two functions are achieved by one pump, that is, heat supply water is subjected to pressure boosting and conveyed to a set area, so that the requirement on hydraulic power circulation heat supply in the area can be met, the part of added pressure values is subtracted, and the safe operation of the heat supply system in the low area can be guaranteed.

Description

1. Technical field [0001] The invention relates to a pressurization and decompression balanced water pump, which belongs to the balanced water pump capable of pressurization and decompression used in the heat supply cycle of the district heating system of high-rise buildings. 2. Background technology [0002] At present, the heating system of high-rise buildings uses the same low-area heat source to supply heat to the high-area and low-area zones. The heating system in the low-area is directly connected to the same low-area heat source. After pressure, it is connected to the high area system for heat supply, and then connected to the same low area heat source pipe network after decompression by the pressure reducing valve. This method of pressurization and decompression is accomplished by a heat supply pump and a pressure relief valve. In practice, the pressure reducing valve has the defect of failure. Once the failure causes the high-pressure heating circulating water to b...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pressurized and decompressed balanced water pump to solve the current problem that the use of heat pump pressurized and decompressed valves for decompression in the heat supply of high-rise building heating partition systems can easily cause overpressure accidents in low-area heating systems. A balanced water pump can not only pressurize the hot water to the set height, but also decompress the returned water to the initial pressure of the water pump inlet.

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