Study on a Flowmeter with Wells Turbine for Bi-directional Airflow

双向气流井式涡轮流量计的研究

• 批准号: 15560369
• 负责人: KAMETANI Hitoshi
• 金额: $ 1.28万
• 依托单位: Matsue National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560369/
• 关键词: flowmeter; Bi-directional flowmeter; Bi-directional turbine; Respiration measurement; Unsteady flow; Wells turbine; Impulse Turbine; Bi-directional Flow

The new turbine flowmeter using the Wells turbine and the impulse turbine have been proposed as a flow rate sensor for bi-directional airflow measurement. Characteristics of the Wells turbine and the impulse turbine have been evaluated for the various air flow patterns. Next research results were obtained as the result.(1) It was shown that to obtain the period and the flow rate of the respiration from angular velocity in a quasi steady state was possible.(2) Using an known turbine characteristic curve and measured angular velocity, the method for obtaining the unsteady flow rate was proposed.(3) It was clarified that removal of the hysteresis which arises in the turbine characteristic curve was necessary in order to accurately measure a flow rate.(4) There is seldom the pressure difference which arises around the turbine of a reciprocating airflow type.Therefore, it was shown that discomfort was not given to an examinee, when the turbine was applied to the respiration measurement(5) By the comparison the turbine characteristic curve of the wells turbine and the impulse turbine, it was shown that the hysteresis which appears in the turbine characteristic curve of the impulse turbine is severe.(6) By reducing number of sheet of the turbine blade, reducing the air resistance, it was confirmed that to reduce the hysteresis was not possible.(7) Simple measurement system of the turbine rotational frequency using the PIC microcomputer was manufactured, and it was confirmed that to carry out calculation and display of the angular velocity are possible almost real-time for the unsteady reciprocating airflow with a flow rate as a respiration.

已经提出了使用井涡轮机和冲动涡轮机的新涡轮机流量计作为双向气流测量的流速传感器。井涡轮机和冲动涡轮机的特性已被评估为各种气流模式。 （1）结果表明，可以在准稳态下获得角度速度的周期和呼吸流量。（2）使用已知的涡轮机特性曲线和测量的角速度，并测量的角度速度，提出了不稳定的流量的方法。 （4）很少有在往复式气流类型的涡轮机周围发生的压力差。因此，当将涡轮机应用于呼吸测量（5）时，没有给予考生不适，与涡轮涡轮机的涡轮涡轮机的特征相比，这是造成涡轮涡轮机的特征，这是造成涡轮涡轮机的特征。冲动涡轮机很严重。（6）通过减少涡轮机叶片的数量，降低空气阻力，可以确定，不可能减少磁滞。（7）使用PIC微型计算机的涡轮旋转频率的简单测量系统是制造的，并且已经确认了一定能够进行流过的计算，并且可以使您的流量进行计算。作为呼吸。

项目成果

Respiration Measurement Using a Micro Impulse Turbine for Bi-directional Airflow (Effect of Rotor Solidity on the Performance)

使用微脉冲涡轮进行双向气流呼吸测量（转子坚固度对性能的影响）

• 发表时间: 2005
• 期刊: The Japan Society of Mechanical Engineers 055
• 作者: Manabu Takao;Hitoshi Kametani;Shintarou Kanamori;Masakazu Honda;Takeshi Funatsu
• 通讯作者: Takeshi Funatsu

往復流型フラッパ流量計に関する研究

往复流式挡板流量计的研究

• 发表时间: 2005
• 期刊: 日本機械学会講演論文集 055
• 作者: 高尾学;亀谷均;岩成太照;江角真美;内村和弘
• 通讯作者: 内村和弘

Flapper Type Flowmeter for Bi-directional Airflow

双向气流挡板式流量计

• 发表时间: 2005
• 期刊: The Japan Society of Mechanical Engineers 055
• 作者: Manabu Takao;Hitoshi Kametani;Motoaki Iwanari;Mami Esumi;Kazuhiro Uchimura
• 通讯作者: Kazuhiro Uchimura

往復流型マイクロインパルスタービンによる呼吸量計測

使用往复式微脉冲涡轮机进行呼吸测量

• 发表时间: 2004
• 期刊: 日本機械学会中国四国支部第42期総会・講演会講演論文集 No.045-1
• 作者: 高尾学;亀谷均;金森真太郎
• 通讯作者: 金森真太郎

往復流型マイクロパルスタービンによる呼吸量計測

使用往复式微脉冲涡轮进行呼吸测量

• 发表时间: 2005
• 期刊: 日本機械学会講演論文集 055
• 作者: 高尾学;亀谷均;金森真太郎;本多将和;船津竹史
• 通讯作者: 船津竹史