Reciprocating compression expander

Abstract

The purpose of the present invention is to eliminate an increase in size of a device, resist a strong elastic force for closing a valve, and easily open the valve with a low pushing force using a simple mechanism according to the load of a reciprocating compressor-expander. The reciprocating compressor / expander is provided with a first valve and a second valve (8), wherein the second valve (8) that sucks a low-pressure compressive fluid into the main body cylinder from the low-pressure passage after the first valve is opened and compresses the compressive fluid suctioned from the first valve to a high pressure by the action of the main body piston, and that discharges the compressive fluid toward the high-pressure passage (9) after the second valve is opened, or, after the second valve (8) is opened, the high-pressure compressive fluid flows into the main body cylinder from the high-pressure path, the compressive fluid flowing in from the second valve is expanded by the action of the main body piston and becomes low-pressure, and after the first valve is opened, the compressive fluid is discharged to the low-pressure path; a first valve drive mechanism that is hydraulically driven or electrically driven and operates the first valve and the second valve; and a second valve drive mechanism (17, 18, 27) that operates the second valve by means of the fluid pressure of the compressive fluid.

Description

technical field [0001] The present invention relates, for example, to a reciprocating compander suitable for compressing or expanding a compressive fluid. Background technique [0002] As renewable energy, solar power generators, wind power generators, and the like have been widely used conventionally. However, power generation devices using these natural energies may be difficult to effectively use according to power demand due to large fluctuations in power generation. [0003] The reason for this is that when generating electricity using natural energy that cannot be controlled by human beings, the amount of electricity generated may greatly exceed the demanded electricity and excessive surplus electricity may be generated. Therefore, in the worst case, power outages may occur. Therefore, in order not to generate such an excessively large surplus power, a power generation device using natural energy may sometimes block a part of the power. [0004] And as a countermeasu...

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Problems solved by technology

[0010] In addition, the capacity of the screw compressor is relatively small, which is not suitable for large-capacity energy storage devices

In addition, the capacity of the screw compressor cannot be adjusted independently by the compressor and expander, and a pressure regulating device for compressed air is required.

Furthermore, in order to solve such a problem, the electric power system also needs a converter such as an inverter, and in this case, there is a problem that the cost of the device itself becomes high.

[0011] On the other hand, in the conventional reciprocating compressor, the suction valve and the discharge valve are operated by springs such as plate springs as described above. The action of the suction valve and the discharge valve is carried out by the elastic force, so there must be a problem that it is difficult to adjust the suction flow rate and the discharge flow rate arbitrarily and appropriately.

In addition, there is a problem that it cannot be used as an expander

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