A system and method for regulating the pressure of a heating pipeline

Abstract

The invention relates to a system and a method for adjusting pressure of a heat supply pipe. A heat supply pipe at high temperature and high pressure and with long routing distance and great height difference is divided into a plurality of pipe sections according to elevations, water turbines are installed on a certain or a plurality of pipe sections which need to be depressurized; the inflow pipe of each water turbine is connected with an upstream pipe section of the pipe section and the outflow pipe of each water turbine is connected with a downstream pipe section of the pipe section; an auxiliary water pump is installed on another pipe section opposite to each water turbine, the inflow pipe of the auxiliary water pump is connected with the upstream pipe section of the another pipe section and the outflow pipe of the auxiliary water pump is connected with the downstream pipe section of the another pipe section; the rotating shaft of each water turbine is in power connection with the rotating shaft of the corresponding auxiliary water pump. By converting potential energy into mechanical energy, driving the auxiliary pumps to operate and decreasing the downstream operating pressure by using the water turbines at the same time, not only can the pressure adjustment flexibility, and the safety and the reachability of the heat supply pipe be greatly improved and can the increased initial investment and heat supply energy consumption for solving the problem of overpressure be reduced, but also the electric energy consumption during transportation of primary network return water is reduced and the goals of recycling waste energy and increasing economic benefits are achieved.

Description

technical field [0001] The invention relates to a pipeline pressure regulating system and method, in particular to a system and method for regulating the pressure of a heating pipeline based on a water turbine and a water pump, and belongs to the field of heating engineering. Background technique [0002] With the widespread use of cogeneration and the gradual increase of the heating radius, the primary heating pipeline often encounters the problem of large height differences. At the same time, the primary heating pipeline also has the characteristics of high temperature, high pressure and long routing distance. Not only that, for the "mountain city" with undulating terrain, there are problems of large slopes and large height differences in the city alone. When the heating pipeline transports hot water from a high-lying place to a low-lying place, if the slope of the terrain is too large, it will cause excessive pressure or even overpressure at the low-lying place. At pres...

AI Technical Summary

Problems solved by technology

For long-distance pipelines with complex routes, it may be necessary to set up more stages of pressure-isolated heat exchange stations to smoothly transport high-temperature water to the city. The loss is so large that the solution becomes unfeasible

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