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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:

期数:

2009年03期

页码:

12-14

栏目:

出版日期:

2009-09-25

文章信息/Info

Title:

Effect of the Eccentric Position on the Leakage of the Clearance Seal in Stirling Refrigerator

作者:

陶??丽 ¹ ;  陈俊华²

1 江苏工业学院机械与能源工程学院, 江苏 常州 213016; 2? 常州工程职业技术学院

Author(s):

TAO Li¹ ;  CHEN Jun- hua²

1. School of Mechanical and Energ y Engineering , Jiang su Po lytechnic U niv er sity, Changzhou 213016, China; 2. Changzhou Inst itute of Engineering Technolog y

关键词:

斯特林制冷机;  间隙密封;  泄漏率;  位置偏心

Keywords:

Stirling refr ig er ator;  clearance seal;  leakage;  eccent ric po sit io n

分类号:

T B 661 ??

文献标志码:

A

摘要:

传统的回热器使用接触式滑动密封存在磨损, 限制了制冷机的使用寿命。应用间隙密封则可以在密封的同时消除接触磨 损和因此而产生的污染。但由于间隙内气体的泄漏, 引起了冷量损失, 使制冷量减少。在斯特林制冷机回热器密封间隙泄漏率 及泄漏引起的冷量损失表达式的基础上, 建立了间隙密封式斯特林制冷机位置偏心对间隙泄漏率影响的数学物理模型, 推导了 位置偏心对间隙泄漏率影响的表达式。分析了位置偏心对间隙泄漏率的影响。

Abstract:

The regenerato r is a key part of the cold head of Stirling ref rigerator. T radit ionally, the seal betw een the regenerator and cy linder w all w as accomplished using sliding bear ings, but there w as co ntact and w ear in the bearings. As a result the w orking life of St ir ling ref rigerator w as limited. The method of clearance seal can achieve the ef fect of the seal betw een regenerator and cy linder w al l w hile eliminating contact betw een them. T hus it eliminates w ear and another sour ce of w ear in the ref rigerato r. But , the g as leakage of clearance seal leads to the leakag e losses and the reduct ion of the co oling pow er. On the basis o f a set of equat ions o f the leakag e and the leakag e losses of the clearance seal in St irling ref rigerator w ith clearance seals, the paper establishes the mathematical and phy sical model o f the effect of the eccent ric position on the leakag e o f the clearance seal in St ir ling refrig erator, and describes a set of equations of the the effect of the eccent ric po sit ion on the leakage of the clearance seal.

备注/Memo

备注/Memo:

作者简介: 陶丽( 1974- ) , 女, 江苏扬州人, 硕士, 讲师。

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更新日期/Last Update: 2009-09-25