Isothermal expansion power system by hydraulic pressure

Abstract

The invention relates to an isothermal expansion power system by hydraulic pressure. The isothermal expansion power system comprises a piston, an air cylinder, a crank connecting rod mechanism, a high-pressure gas working medium storage tank, a heating medium storage tank and a heat exchanger. Liquid in the heating medium storage tank is heated by an outside heat source. The high-pressure gas working medium storage tank stores high-pressure gas and liquid. When the system works and high-pressure air enters the air cylinder from the high-pressure storage tank, a liquid pump works, the liquid in a liquid tank is absorbed to enter the high-pressure gas working medium storage tank, and the high-pressure gas working medium storage tank is made to maintain constant pressure. High-pressure gas enters the air cylinder to drive the piston to do work, meanwhile, high-temperature heating media from the heating medium storage tank enter the air cylinder in a mist or foam shape, the quasi isothermal expansion process is achieved, and therefore the output work quantity of unit working media is improved.

Description

technical field [0001] The invention relates to a hydraulic isothermal expansion power system, specifically, the system includes an isothermal expansion machine, a liquid tank, a high-pressure storage tank and a water pump; the liquid in the liquid tank is heated by an external heat source; the high-pressure storage tank stores high pressure Air and liquid, when the system is working and the high-pressure air enters the isothermal expander from the high-pressure storage tank, the liquid pump works by absorbing the liquid in the liquid tank and entering the high-pressure storage tank, so that the high-pressure storage tank maintains a constant pressure; the high-pressure air enters the expander to drive The expander works, and at the same time, the high-temperature liquid from the liquid tank enters the expander cylinder in the form of mist or foam to realize the quasi-isothermal expansion process, thereby increasing the output power per unit of working fluid. Background techn...

AI Technical Summary

Problems solved by technology

Practice has proved that the effect of using water or air to heat the expansion gas outside the cylinder wall is not obvious, which leads to the actual expansion process close to adiabatic expansion, which not only reduces the system efficiency of the expander, but also easily causes frost in the vent hole, affecting normal operation of the machine

However, the multi-stage expansion and inter-stage heating operation mode often used in the industry will inevitably lead to problems such as complex system structure, increased cost, and increased additional power consumption.

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