Free piston expansion type hydraulic power output system with balance weight mechanism

Abstract

The invention discloses a free piston expansion type hydraulic power output system with a balance weight mechanism. The free piston expansion type hydraulic power output system comprises an air inlet pipeline, an exhaust pipeline, an energy conversion unit and an energy output unit. The energy conversion unit comprises a first oil tank, a second oil tank, a free piston expansion machine, a plunger cylinder and a balance weight mechanism. An expansion cavity of the free piston expansion machine is connected with a switch valve A and a switch valve B which are connected in parallel and connected with an air inlet pipeline and an exhaust pipeline correspondingly, and a working cavity of the plunger cylinder is connected with a first branch and a second branch. The first branch is provided with a first one-way valve and a first oil tank, the second branch is provided with a second one-way valve, a third one-way valve, a second energy accumulator, a second safety valve, a manual pump and a second oil tank, and the two ends of the second one-way valve are connected with a two-position two-way electromagnetic valve in parallel. The energy output unit comprises a one-way quantitative hydraulic motor, a third oil tank, a first energy accumulator and a first safety valve. The free piston expansion type hydraulic power output system is simple in structure, low in manufacturing cost, suitable for two-phase flow and variable working condition working environments and high in energy recovery efficiency.

Description

technical field [0001] The invention relates to the technical field of a power output system that utilizes waste heat and pressure energy from industrial exhaust low-temperature waste gas to output kinetic energy, in particular to a free-piston expansion hydraulic power output system with a counterweight mechanism. Background technique [0002] Energy is an important material basis for the survival and development of human society, and all social activities and survival of human beings depend on the supply of energy. my country's economic development has entered a new normal, the growth rate of energy consumption is slowing down, the problems of development quality and efficiency are prominent, and the overall efficiency of the energy system is low. Low-grade energy such as industrial waste heat and pressure, waste gas and waste heat in my country has the characteristics of many types and large reserves. Due to the existence of problems such as low enthalpy value, large ener...

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Problems solved by technology

[0003] The present invention intends to provide a free-piston expansion hydraulic power output system with a counterweight mechanism to solve the waste of waste heat and pressure resources, the high cost of waste heat and pressure energy recovery equipment, and the complicated use and maintenance of recovery equipment. question

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