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Preparation method of Stirling engine regenerator

A Stirling engine and regenerator technology, applied in the field of metal porous materials, can solve problems such as low heat exchange efficiency, and achieve the effects of prolonging life, low price and convenient production

Active Publication Date: 2015-12-09
西安菲尔特金属过滤材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a preparation method of a Stirling engine regenerator to solve the problems that the existing wire mesh regenerator is prone to flow resistance and low heat exchange efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Select the material as 0Cr 17 Ni 12 Mo 2 The plain weave stainless steel wire mesh has a mesh diameter of Φ62μm and a wire diameter of Φ0.055mm. The plain weave stainless steel wire mesh is stamped into several Φ60.11mm wire mesh discs, and 900 wire mesh discs are stacked and placed in In the GH60 high-temperature alloy mold, put the high-temperature alloy mold into a vacuum sintering furnace for high-temperature sintering. The sintering temperature is 1250°C and the temperature is kept for 4 hours. After room temperature, the GH60 high temperature alloy mold is released. Finally, the wire mesh disc that has been gas-quenched to room temperature is taken out of the GH60 high temperature alloy mold, and then the wire mesh disc is chamfered and cylindrically grinded with electric sparks, and processed. The chamfer of the wire mesh disc is 4.1°, and the outer diameter is Φ60.02mm, that is, the Stirling engine regenerator of the present invention is manufactured.

Embodiment 2

[0028] Select the material as 0Cr 17 Ni 12 Mo 2 The plain weave stainless steel wire mesh has a mesh diameter of Φ71μm and a wire diameter of Φ0.045mm. The plain weave stainless steel wire mesh is stamped into several Φ60.1mm wire mesh discs, and 850 wire mesh discs are stacked and placed In the GH60 high-temperature alloy mold, put the high-temperature alloy mold into a vacuum sintering furnace for high-temperature sintering. The sintering temperature is 1260℃ and the temperature is held for 3.5 hours. After room temperature, the GH60 high temperature alloy mold is released. Finally, the wire mesh disc that has been gas-quenched to room temperature is taken out of the GH60 high temperature alloy mold, and then the wire mesh disc is chamfered and cylindrically grinded with electric sparks, and processed. The chamfer of the wire mesh disc is 4.3°, and the outer diameter is Φ60mm, that is, the Stirling engine regenerator of the present invention is manufactured.

Embodiment 3

[0030] Select the material as 0Cr 17 Ni 12 Mo 2 The plain weave stainless steel wire mesh has a mesh diameter of Φ80μm and a wire diameter of Φ0.050mm. The plain weave stainless steel wire mesh is stamped into several Φ60.09mm wire mesh discs, and 950 wire mesh discs are stacked and placed in In the GH60 high-temperature alloy mold, put the high-temperature alloy mold in a vacuum sintering furnace for high-temperature sintering. The sintering temperature is 1240℃, and the temperature is kept for 4.5 hours. After room temperature, the GH60 high-temperature alloy mold is released. Finally, the wire mesh disc that has been gas-quenched to room temperature is taken out of the GH60 high-temperature alloy mold, and then the wire mesh disc is chamfered and cylindrically grinded with an electric spark, and processed. The chamfer of the wire mesh disc is 4.2°, and the outer diameter is Φ59.98mm, that is, the Stirling engine regenerator of the present invention is manufactured.

[0031] Th...

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PUM

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Abstract

The invention discloses a preparation method for a Stirling engine heat regenerator. The preparation method comprises the steps of stamping a stainless steel silk screen into a plurality of wafers, stacking the wafers and then placing the wafers in a high-temperature alloy die, performing vacuum sintering on the high-temperature alloy die, performing gas quenching on the high-temperature alloy die to room temperature, finally taking out the silk screen wafers and performing chamfering and excircle grinding treatment on the silk screen wafers, and obtaining the Stirling engine heat regenerator. The stainless steel silk screen has excellent heat exchange and flowing performance and is convenient to manufacture and low in price, appropriate mesh diameters of the stainless steel silk screen and appropriate layer numbers are selected, and the problems that weight and air permeability of the heat regenerator are conflicted with each other, flow resistance is caused easily, and heat exchange efficiency is low are solved. Simultaneously, the silk screen wafers are processed by adopting a sintering process, service life of the heat regenerator is prolonged, the silk screen wafers are processed by adopting a spark erosion technology, and excellence of dimensional accuracy of the heat regenerator is guaranteed.

Description

Technical field [0001] The invention relates to the technical field of porous metal materials, in particular to a preparation method of a Stirling engine regenerator. Background technique [0002] With the increasingly serious energy problem, renewable energy sources such as solar energy have attracted more and more attention. The dish thermal power generation system has become one of the most potential ways of using solar energy due to its unique advantages. The Stirling engine is a key component in the dish thermal power generation system, and the regenerator is the core part of the Stirling engine. The performance of the regenerator directly affects the efficiency of the dish thermal power generation system. [0003] The regenerator is connected in series between the heater and the cooler. When the working fluid flows from the hot cavity (expansion cavity) to the cold cavity (compression cavity), the regenerator absorbs part of the heat energy, so that the working fluid drops f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11
Inventor 张小庆高晓军白文峰呼伟光涛苏娜陈利荣王娟
Owner 西安菲尔特金属过滤材料股份有限公司