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Supercritical fluid-type external-combustion heat engine

A technology of supercritical fluid and heat engine, which is applied in the direction of hot gas variable displacement engine devices, mechanical equipment, machines/engines, etc. It can solve the problems of inability to achieve zero leakage, small power/weight ratio, low heat conversion efficiency, etc., and achieve structural The result of simplicity, high power/weight ratio and low material requirements

Active Publication Date: 2012-11-28
HARBIN XIANGKAI TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a supercritical fluid type external combustion heat engine. The present invention is to overcome the low heat conversion efficiency (between 20% and 40%) of the existing internal combustion engine, and discharge a large amount of gas into the air due to incomplete combustion. The problem of polluting gas and high noise, and the existing Stirling engine still has the problem of low power / weight ratio and difficult sealing to achieve zero leakage, etc.

Method used

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  • Supercritical fluid-type external-combustion heat engine

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specific Embodiment approach 1

[0014] Specific implementation mode one: combine figure 1 Describe this embodiment, this embodiment is made up of gas guide cylinder cavity 1, gas guide piston 2, work cylinder chamber 3, work piston 4, flywheel crankshaft assembly 5, valve 6, carbon dioxide 7, gas working medium 8, airtight casing 9 , Generator 10 forms;

[0015] The inner cavity 2-1 of the gas guide piston 2 is provided with a multi-layer heat storage and gas conduction metal mesh 2-2, and each of the two ends of the gas guide piston 2 has a through hole 2-3 connected with the inner cavity 2-1. , the air guide piston 2 is arranged in the air guide cylinder chamber 1, and the connecting rod 2-4 of the air guide piston 2 passes through the sliding seal sleeve 1-1 at one end of the air guide cylinder chamber 1 and connects with the first part of the flywheel crankshaft assembly 5 The crank rod 5-1 is connected in rotation. When the crankshaft 5-2 of the flywheel crankshaft assembly 5 rotates, it drives the air...

specific Embodiment approach 2

[0021] Specific implementation mode two: combination figure 1 This embodiment will be described. The difference between this embodiment and the first embodiment is that the pressure in the airtight casing 9 is 8 MPa. Other components and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Specific implementation mode three: combination figure 1 This embodiment is described. The difference between this embodiment and the first embodiment is that the pressure in the airtight casing 9 is 9 MPa. Other components and connections are the same as in the first embodiment.

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Abstract

The invention relates to the technical field of heat energy conversion and discloses a supercritical fluid-type external-combustion heat engine for overcoming the problems of low heat conversion efficiency and atmospheric pollution caused by incomplete combustion, and high noise in the present internal-combustion engines, the problems of low power / weight radio and incapability of zero leakage due to difficulty in sealing in the present Stirling engines. According to the invention, carbon dioxide and a gas working medium are filled in an airtight shell, the pressure in the airtight shell ranges from 7.4 MPa to 10 MPa, so that the carbon dioxide is in a supercritical carbon dioxide fluid state; and the interior of a gas guide cylinder cavity, a gas guide piston, the interior of a work-applying cylinder cavity, a work-applying piston, a flywheel crankshaft assembly and a valve are all immersed in the supercritical carbon dioxide fluid, the heat end temperature of the gas guide cylinder cavity is set to be between 60 DEG C and 130 DEG C, and the cold end temperature of the gas guide cylinder cavity is set be between 32 DEG C and 40 DEG C. By the supercritical fluid-type external-combustion heat engine disclosed by the invention, the heat energy at a temperature being higher than 50 DEG C can be directly and efficiently converted to mechanical energy and then to electrical energy, and then zero leakage can be realized. The efficiency of the heat energy-mechanical energy conversion is 20-80%.

Description

technical field [0001] The invention relates to the technical field of converting thermal energy into mechanical energy. Background technique [0002] Existing internal combustion engines are widely used in various fields, among which the number of automotive applications is the largest, which brings a lot of convenience to human life, but its heat / machine conversion efficiency is generally between 20% and 40%, and the remaining 60% ~80% of the heat energy cannot be used and needs to be discharged outside. At the same time, because the fuel cannot be completely burned, the exhaust gas will emit a large amount of polluting gas into the air, which will seriously pollute the air. According to statistics, these are the main causes of global warming. one of the reasons. It has brought irreparable loss and damage to the future living environment of human beings. [0003] The Stirling engine was invented by Stirling in 1816. Stirling engines are special heat engines because thei...

Claims

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Application Information

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IPC IPC(8): F02G1/043
Inventor 雷涛
Owner HARBIN XIANGKAI TECH DEV
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