Free-piston Stirling engine with magnetic fluid power generation and working method
A technology of Stirling engine and magnetic fluid generator, which is applied in the direction of machines/engines, hot gas variable displacement engine devices, electrical components, etc., and can solve problems such as increased motor loss, affecting the integrity of the traveling wave magnetic field, and loss of power.
Inactive Publication Date: 2016-08-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0005] The traditional free-piston Stirling engine uses a gas spring as the restoring force of the piston. Not only is it large in size, but the piston that acts on the gas spring will drift without any mechanical fixation, so that the gas distribution piston and the power piston are close together or respectively. end, thus losing power
In addition, the traditional energy output uses a linear motor, and there is an "Edge Effect" in the magnetic field at the end, which affects the integrity of the traveling wave magnetic field, increases the loss of the motor, reduces the thrust, and the motor has high vibration and heat generation, which affects the whole machine stability
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[0018] Combine below figure 1 Further illustrate the structure of the free-piston Stirling engine with magnetic fluid power generation of the present invention. The gas distribution piston system 6 is composed of double-layer cylinders (outer cylinder 1 and inner cylinder 4), and the interlayer is composed of heating chamber 5, regenerator 7 and gas passage 8 respectively. The inner cylinder 4 is open in the left head heating area.
[0019] When the gas is heated in the expansion chamber 2 and the heating chamber 5, it is heated and expands in the expansion chamber 2, driving the distributing piston 3 to move to the right, compressing the first leaf spring 13 to generate a certain potential energy, when the distributing piston 3 moves to The first leaf spring 13 behind the right bottom has the maximum potential energy. At this time, the restoring force of the first leaf spring 13 is greater than the gas pressure, and pushes the gas distribution piston 3 to move to the left in...
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The invention relates to a free piston stirling engine with magnetofluid for power generation and a work method of the free piston stirling engine, and belongs to the field of utilization of heat engines. According to the free piston stirling engine, gas work medium carries out stirling cycle in a gas distribution piston system (6) to generate pushing force for a power piston (18) in a power piston system (19) so that an auxiliary piston (22) can be driven to reciprocate in an auxiliary piston air cylinder (24). The auxiliary piston (22) pushes metal liquid (25) to circularly reciprocate in a magnetofluid passage (26), so that the strong magnetic field generated by a permanent magnet S (20) and a permanent magnet N (23) is transversely cut, electric potential of certain intensity is generated, and power generation is realized through the potential difference. The efficient and stable stirling engine is used for providing power, the magnetofluid power generation technology is adopted to generate electricity, and by combining the stirling engine and the magnetofluid power generation technology, an efficient, stable and continuous power generation technology is realized. The free piston stirling engine with magnetofluid for power generation is provided with three pistons, has high stability, and meanwhile is simple in structure and low in machining cost.
Description
technical field [0001] The invention relates to a free-piston Stirling engine with magnetic fluid power generation and a working method, belonging to the field of heat engine utilization. Background technique [0002] The Stirling Engine is an externally heated closed-cycle piston engine. In this type of machine, the working medium (usually hydrogen, helium or air) is enclosed in the circulation loop, and the flow direction of the working medium in the closed circulation loop is controlled by changing the volume of the cylinder; at lower temperatures and The working medium is compressed under pressure, and the working medium is expanded under higher temperature and pressure to obtain positive cycle work. Its thermodynamic process is carried out according to the Stirling cycle. [0003] The free-piston Stirling engine is an important branch of the Stirling engine, and it is a power device that realizes a thermodynamic cycle by the reciprocating motion of the piston. This m...
Claims
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IPC IPC(8): F02G1/043H02K7/18H02K44/08
CPCF02G1/043H02K44/085
Inventor 黄护林曹嘉彬
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS