JP6581963B2 - 液面状態検出装置及び燃料電池システム - Google Patents
液面状態検出装置及び燃料電池システム Download PDFInfo
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- G—PHYSICS
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
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- G01—MEASURING; TESTING
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- G01F23/56—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements
- G01F23/60—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using electrically actuated indicating means
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- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
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- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
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Description
液体(例えば、後述の実施形態での液体2)を貯蔵するタンク(例えば、後述の実施形態での液体貯留タンク1)内に立設されたガイドロッド(例えば、後述の実施形態でのガイドロッド45)に案内されて上下方向に移動可能なフロート部(例えば、後述の実施形態でのフロート部20)と、
前記フロート部に一体固定され、上下方向に対向配置された一対の電極部(例えば、後述の実施形態での一対の電極部30,50,60)と、を備え、
前記一対の電極部間に存在する絶縁物の誘電率によって変化する前記一対の電極部間の静電容量に基づき、前記タンク内の液面高さ及び前記タンクの傾斜を検出する、液面状態検出装置である。
前記一対の電極部の形状は、平面視において、円形である。
前記タンクの傾斜は、前記一対の電極部間の静電容量を、前記一対の電極部間が液体で満たされている場合の静電容量と比較した大小関係、及び前記一対の電極部間が空気で満たされている場合の静電容量と比較した大小関係に基づき検出される。
前記一対の電極部の各電極部は、平面視において、検出される前記タンクの傾斜方向に分割された複数の分割電極部(例えば、後述の実施形態での上部電極板51,52,61〜64及び下部電極板53,54,65〜68)を備える。
前記分割電極部の形状は、平面視において、検出される前記タンクの傾斜方向に対して線対称の4分円である。
検出される前記タンクの傾斜方向は、前記タンクから液体が流れ出る方向に等しい。
前記タンクの傾斜は、前記タンクの傾斜方向にそれぞれ位置する前記一対の電極部の各分割電極部間の静電容量の大小関係に基づき検出される。
図1(a)は、第1実施形態の液面状態検出装置の構成を示す縦断面図であり、図1(b)は、図1(a)に示された液面状態検出装置の要部拡大斜視図である。図1(a)に示すように、液面状態検出装置10は、液体貯留タンク1内に配設され、貯留された液体2の液面R、及び液体貯留タンク1の傾斜を検出する。なお、液面状態検出装置10は、液体貯留タンク1の底部1aから立設したガイドロッド45に沿って摺動可能に配設されているため、液面状態検出装置10が検出する液体貯留タンク1の傾斜は、液面状態検出装置10の傾斜に等しい。
但し、「ε」は上部電極板31と下部電極板32の間に存在する絶縁物の誘電率[F/m]、「S」は上部電極板31及び下部電極板32の面積[m2]、「L」は上部電極板31と下部電極板32との離間距離[m]である。
図5(a)は、本発明に係る第2実施形態の液面状態検出装置が備える一対の電極部を示す斜視図であり、図5(b)は、図5(a)に示された一対の電極部の平面図であり、図5(c)は、図5(a)に示された一対の電極部の電気回路図である。第2の実施形態の液面状態検出装置10Aが第1の実施形態の液面状態検出装置10と異なる点は、一対の電極部の構成である。この点以外は第1の実施形態と同様であるため、第1実施形態と同一又は同等部分には同一符号又は相当符号を付して説明を簡略化又は省略する。
図7(a)は、本発明に係る第3実施形態の液面状態検出装置が備える一対の電極部を示す斜視図であり、図7(b)は、図7(a)に示された一対の電極部の平面図であり、図7(c)は、図7(a)に示された一対の電極部の電気回路図である。第3の実施形態の液面状態検出装置10Bが第1の実施形態の液面状態検出装置10と異なる点は、一対の電極部の構成である。この点以外は第1の実施形態と同様であるため、第1実施形態と同一又は同等部分には同一符号又は相当符号を付して説明を簡略化又は省略する。
2 液体
10,10A,10B 液面状態検出装置
20 フロート部
30,50,60 電極部
31,51,52,61,62,63,64 上部電極板
32,53,54,65,66,67,68 下部電極板
35 スペース柱
36 窓部
45 ガイドロッド
46 ストッパ
Claims (8)
- 液体を貯蔵するタンク内に立設されたガイドロッドに案内されて上下方向に移動可能なフロート部と、
前記フロート部に一体固定され、上下方向に対向配置された一対の電極部と、を備え、
前記一対の電極部間に存在する絶縁物の誘電率によって変化する前記一対の電極部間の静電容量に基づき、前記タンク内の液面高さ及び前記タンクの傾斜を検出する、液面状態検出装置。 - 請求項1に記載の液面状態検出装置であって、
前記一対の電極部の形状は、平面視において、円形である、液面状態検出装置。 - 請求項2に記載の液面状態検出装置であって、
前記タンクの傾斜は、前記一対の電極部間の静電容量を、前記一対の電極部間が液体で満たされている場合の静電容量と比較した大小関係、及び前記一対の電極部間が空気で満たされている場合の静電容量と比較した大小関係に基づき検出される、液面状態検出装置。 - 請求項1に記載の液面状態検出装置であって、
前記一対の電極部の各電極部は、平面視において、検出される前記タンクの傾斜方向に分割された複数の分割電極部を備える、液面状態検出装置。 - 請求項4に記載の液面状態検出装置であって、
前記分割電極部の形状は、平面視において、検出される前記タンクの傾斜方向に対して線対称の4分円である、液面状態検出装置。 - 請求項4又は5に記載の液面状態検出装置であって、
検出される前記タンクの傾斜方向は、前記タンクから液体が流れ出る方向を含む、液面状態検出装置。 - 請求項4から6のいずれか1項に記載の液面状態検出装置であって、
前記タンクの傾斜は、前記タンクの傾斜方向にそれぞれ位置する前記一対の電極部の各分割電極部間の各静電容量の大小関係に基づき検出される、液面状態検出装置。 - 請求項1から7のいずれか1項に記載の液面状態検出装置を備える、燃料電池システム。
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CN201711426787.8A CN108240851B (zh) | 2016-12-27 | 2017-12-25 | 液面状态检测装置及燃料电池*** |
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