STUDY ON AN INNOVATIVE VIBRATION-CANCELLATION METHOD FOR A PULSE TUBE CRYOCOOLER

脉冲管制冷机创新消振方法的研究

• 批准号: 16360110
• 负责人: HARUYAMA Tomiyoshi
• 金额: $ 6.72万
• 依托单位: HIGH ENERGY ACCERELATOR RESEARCH ORGANIZATION (KEK)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360110/
• 关键词: NANO-LEVEL VIBRATION; PULSE TUBE CRYOCOOLER; VIBRATION CANCELLATION; ANTI-PHASE PRESSURE WAVE; REFRIGERATION

An innovative method for canceling the vibration at the cold stage of a pulse tube cryocooler has been investigated. A thin stainless tube of 20 mm in diameter and 200 mm in length was used to fabricate a model pulse tube cryocooler. The vibration of the cold stage of model cryocooler was measured for proving a method of this innovative vibration cancellation. A model cryocooler consists of multi-pairs of pipes on the same cold stage. When a presented working gas is supplied with a proper phase shift to those pairs, the vibration of the cold stage can be cancelled. We made models of the pulse tube cryocooler with a single pipe, two pairs of pipes and three pairs of pipes. Compared with the single-pipe model, the six-pipe model shows about a 98% reduction of vibration without any additional structure for vibration isolation.Then, we also made the regenerators with 500 sheets of stainless mesh # 100, and set up those components inside of the thin tube to realize the pulse tube cryocooler. The self-vibration canceling pulse tube cryocooler with two set of tube and regenerator was operated to verify cooling power. The cold stage was cooled down to 168 K as the lowest temperature by using a GM type helium compressor, digital circuits for anti-phase signal generation and the solenoid valves for pressure swing. In this condition, the model showed about a 70 % reduction of vibration. As the symmetry of two sets of pulse tube cryocooler is essential in this method, any asymmetric configuration could affect on effective vibration reduction.

研究了一种消除脉管制冷机冷端振动的新方法。采用直径为20 mm、长度为200 mm的不锈钢细管制作了一台模型脉管制冷机。为验证该消振方法的可行性，对模型制冷机冷台的振动进行了测量。模型制冷机是由多对管道在同一冷台上组成。当所提供的工作气体以适当的相移供应到这些对时，冷台的振动可以被抵消。制作了单管、双对管和三对管的脉管制冷机模型。与单管模型相比，六管模型在不增加任何隔振结构的情况下，振动降低了98%左右。然后，我们还制作了500片100号不锈钢网的回热器，并将这些部件安装在细管内，实现了脉管制冷机。对两组管和回热器的自消振型脉管制冷机进行了制冷功率验证。利用GM型氦压缩机、数字电路产生反相信号和电磁阀变压，将冷级冷却到最低温度168 K。在这种情况下，模型显示出约70%的振动减少。由于两台脉管制冷机的对称性是该方法的关键，因此任何非对称结构都可能影响到脉管制冷机的减振效果。

项目成果

重力波検出器低振動パルス管冷凍機の開発

引力波探测器低振动脉冲管制冷机研制

• 发表时间: 2004
• 期刊: 第71回2004年度秋季低温工学・超電導学会講演概要集
• 作者: 幾島悠喜;小山知大;李瑞;都丸隆行;鈴木敏一;春山富義他
• 通讯作者: 春山富義他

Ultra-low vibration pulse tube cryocooler with a new vibration cancellation method

采用新型减振方法的超低振动脉冲管制冷机

• 发表时间: 2006
• 期刊: Advances in Cryogenic Engineering 51
• 作者: T.Suzuki;T.Tomaru;T.Haruyama;et al.
• 通讯作者: et al.

Development of pulse tube cryocooler system with vibration cancellation method

消振法脉冲管制冷机系统的研制

• 发表时间: 2005
• 期刊: Abstract of CSJ Conference Vol.73
• 作者: T.Suzuki;T.Tomaru;N.Sato;T.Haruyama;et al.
• 通讯作者: et al.

極低温冷凍機

低温冰箱

• 发表时间: 2003

冷凍機を用いた物品の冷却方法及び冷凍機

使用冰箱冷却物品的方法及冰箱

• 发表时间: 2003