Hydraulic free-piston expander linear power generation unit with counterweight system

Abstract

The invention belongs to the technical field of using high-pressure gas or low-grade heat source to output electric energy, and discloses a hydraulic free-piston expander linear power generation device with a counterweight system, including a first solenoid valve, a second solenoid valve, an expander body, a counterweight trolley, Linear generator, hydraulic plunger cylinder, one-way valve, third solenoid valve, accumulator, oil cylinder, pilot relief valve and manual pump, A end of the first solenoid valve is the gas inlet, P of the second solenoid valve The terminal is the gas outlet, the linear generator is provided with a stator, the stator slides along the track of the linear generator and cuts the magnetic induction line generated by the linear generator, the input terminal of the check valve is connected with the P terminal of the third solenoid valve, the accumulator It is pipe-connected with the pilot relief valve at the same time, the lower side of the pilot relief valve is pipe-connected with the oil cylinder, and the manual pump is connected in parallel at both ends of the pilot relief valve; the invention solves the problem that the expander in the prior art has a limited range of working conditions The problem applies to high pressure gas or low grade heat source to output electrical energy.

Description

technical field [0001] The invention relates to the technical field of using high-pressure gas or low-grade heat source to output electric energy, in particular to a hydraulic free-piston expander linear power generation device with a counterweight system. Background technique [0002] Energy is the basis for the survival and development of all societies. At present, there is a shortage of energy in the world. Improving system efficiency and reducing carbon emissions have become world demands. Therefore, low-grade heat recovery is of great significance. According to the statistics of the overall energy consumption structure, more than 50% of the energy is converted into different types of waste heat and pressure and lost. For the recovery and utilization of medium and low-grade energy, if water is used as the circulating working medium, the initial steam parameters at the outlet of the evaporator will be low, which will weaken the working ability of the working medium in the...

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a hydraulic free-piston expander linear power generation device with a counterweight system to solve the problem that the expander in the prior art can adapt to a small range of working conditions

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