Internal combustion engine tail gas utilization heat energy power system based on adjustable-pressure and stable-pressure condensation

Abstract

The invention discloses an internal combustion engine tail gas utilization heat energy power system based on adjustable-pressure and stable-pressure condensation. The system comprises a gasifying device, a turbine, a condensation device and a one-way hydraulic pump for realizing circular communication through circulating pipes in sequence; circulating working mediums are in the circulating pipes; a heat collecting device is mounted at the external of the gasifying device, and is communicated with an internal combustion engine tail gas pipe; a working medium adjuster is arranged between the turbine and the condensation device, and includes a turbine current limiter and a pressure stabilizing and controlling machine; the pressure stabilizing and controlling machine includes a slow pressure current storage cylinder, a slow pressure piston and an air pressure adjuster; the top end of the slow pressure current storage cylinder is communicated with the circulating pipes, and the bottom end of the slow pressure current storage cylinder is communicated with the air pressure adjuster; and the slow pressure piston is mounted in the slow pressure current storage cylinder. The internal combustion engine tail gas utilization heat energy power system based on adjustable-pressure and stable-pressure condensation has such advantages as high heat energy conversion efficiency, stable operation and adjustable power.

Description

technical field [0001] The invention belongs to the field of energy utilization equipment, in particular to an internal combustion engine tail gas utilizing heat energy power system based on adjustable pressure and stable pressure condensation. Background technique [0002] Energy is an important material basis for the survival and development of human society. Throughout the history of the development of human society, every major progress of human civilization is accompanied by the improvement and replacement of energy. The development and utilization of energy has greatly promoted the development of the world economy and human society. [0003] However, with the continuous development and consumption of energy, non-renewable energy sources such as petroleum, coal mines, and natural gas are gradually reduced, and energy conservation and recycling are gradually being valued. The basic content of my country's current energy strategy is: adhere to the priority of conservati...

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Problems solved by technology

[0007] However, the common problems of existing thermal power generation equipment are: a. The temperature requirements for high-temperature heat sources are high, generally above 200°C, and the thermal energy conversion efficiency is low. The thermal energy conversion efficiency is generally 15% to 35%. Under the heat source of ℃, the average thermal energy conversion efficiency is 18%; b. The gasification temperature of the working fluid is unstable, and the condensation effect of the working fluid is not good. Causes the phenomenon of high energy consumption for gasification heating; c. The driving force of the turbine is small, and the efficiency of converting the gasification substance into mechanical energy is low; d. The turbine speed is unstable, and it is prone to jamming; e. Heat collection The heat collection effect of the device is not good, and the external waste heat absorption rate is small. f. The heat displacement of the condensing device is large, and the waste of heat energy is large. The condensation speed of the natural condensation method is slow, and the active condensation method (fan air cooling or liquid pump water cooling) requires additional power consumption; g. The working fluid is easy to deteriorate or appear impurities; f. The turbine is prone to leakage of working fluid

[0008] On the other hand, the thermal energy conversion efficiency of the existing internal combustion engine is about 45%, and the exhaust temperature of the internal combustion engine exhaust gas can be as high as 400°C, and there is a large energy waste in the exhaust emission.

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