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公开(公告)号：US07334455B2
公开(公告)日：2008-02-26
申请号：US10577543
申请日：2004-08-30
IPC分类号： G01M3/04
CPC分类号： G01M3/3254 , G01M3/002 , G01M3/3245
摘要： A leak detector comprising a sensor unit including a measuring slim-tube (13b) via the lower end of which a liquid in a tank is led in/out, a measuring tube (17) connected to the upper end thereof and having a sectional area larger than that thereof, and temperature sensors (133, 134) and a heater (135) provided to the slim-tube (13b), and a leak detection control unit (15a) connected to the sensor unit. The leak detection control unit (15a) has a pulse voltage generating circuit for applying a single pulse voltage to the heater (135) and a leak detecting circuit that is connected to the temperature sensors (133, 134) and produces an output equivalent to a temperature difference sensed by these temperature sensors, whereby a value equivalent to a liquid flow rate is calculated by integrating the difference between an output from the leak detecting circuit and its initial value according to a single pulse voltage applied to the heater (135) by the pulse voltage generating circuit, and leakage of liquid from the tank is detected based on this value.
摘要翻译： 一种检漏仪，包括一个传感器单元，该传感器单元包括一个测量细长管，通过其下端引入一个罐内的液体，一个连接到其上端的测量管， 以及设置在细长管（13b）上的温度传感器（133,134）和加热器（135），以及与传感器单元连接的泄漏检测控制单元（15a）。 泄漏检测控制单元（15A）具有用于向加热器（135）施加单个脉冲电压的脉冲电压产生电路和连接到温度传感器（133,134）的泄漏检测电路，并产生相当于 由这些温度传感器感测到的温度差，由此通过根据施加到加热器（135）的单个脉冲电压积分来自泄漏检测电路的输出与其初始值之间的差异来计算与液体流量相当的值， 基于该值检测脉冲电压产生电路和液体从罐中的泄漏。
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公开(公告)号：US20070157706A1
公开(公告)日：2007-07-12
申请号：US10577543
申请日：2004-08-30
IPC分类号： G01M3/32
CPC分类号： G01M3/3254 , G01M3/002 , G01M3/3245
摘要： A leak detector comprising a sensor unit including a measuring slim-tube (13b) via the lower end of which a liquid in a tank is led in/out, a measuring tube (17) connected to the upper end thereof and having a sectional area larger than that thereof, and temperature sensors (133, 134) and a heater (135) provided to the slim-tube (13b), and a leak detection control unit (15a) connected to the sensor unit. The leak detection control unit (15a) has a pulse voltage generating circuit for applying a single pulse voltage to the heater (135) and a leak detecting circuit that is connected to the temperature sensors (133, 134) and produces an output equivalent to a temperature difference sensed by these temperature sensors, whereby a value equivalent to a liquid flow rate is calculated by integrating the difference between an output from the leak detecting circuit and its initial value according to a single pulse voltage applied to the heater (135) by the pulse voltage generating circuit, and leakage of liquid from the tank is detected based on this value.
摘要翻译： 一种检漏仪，包括一个传感器单元，该传感器单元包括一个测量细长管，通过其下端引入一个罐内的液体，一个连接到其上端的测量管， 以及设置在细长管（13b）上的温度传感器（133,134）和加热器（135），以及与传感器单元连接的泄漏检测控制单元（15a）。 泄漏检测控制单元（15A）具有用于向加热器（135）施加单个脉冲电压的脉冲电压产生电路和连接到温度传感器（133,134）的泄漏检测电路，并产生相当于 由这些温度传感器感测到的温度差，由此通过根据施加到加热器（135）的单个脉冲电压积分来自泄漏检测电路的输出与其初始值之间的差异来计算与液体流量相当的值， 基于该值检测脉冲电压产生电路和液体从罐中的泄漏。
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公开(公告)号：US07536900B2
公开(公告)日：2009-05-26
申请号：US10564129
申请日：2004-06-30
IPC分类号： G01M3/04
CPC分类号： G01M3/3245
摘要： A leak detecting system includes a leak detector that detects leakage of liquid stored in a tank based on fluctuation in a level of the liquid. The leak detector includes a liquid inlet/outlet portion through which the liquid in the tank flows in and out, a flow-rate measuring unit configured to measure an amount of flow of the liquid inside the leak detector, and a liquid retaining portion configured to retain liquid flowing therein through the liquid inlet/outlet portion. A lower end of the leak detector is detachably attached to a bottom plate of the tank, and an upper end of the leak detector is supported in a gauging port in a top plate in such a manner that the leak detector is movable in a vertical direction.
摘要翻译： 泄漏检测系统包括：泄漏检测器，其基于液体液面的波动来检测储存在罐中的液体的泄漏。 泄漏检测器包括液体入口/出口部分，罐中的液体通过其流入和流出;流量测量单元，被配置为测量泄漏检测器内部的液体的流量;液体保持部分， 保持通过液体入口/出口部分流入其中的液体。 泄漏检测器的下端可拆卸地附接到罐的底板，并且检漏器的上端被支撑在顶板中的测量口中，使得检漏器可在垂直方向上移动 。
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公开(公告)号：US20060230826A1
公开(公告)日：2006-10-19
申请号：US10564129
申请日：2004-06-30
IPC分类号： G01M3/32
CPC分类号： G01M3/3245
摘要： A leak detecting system includes a leak detector that detects leakage of liquid stored in a tank based on fluctuation in a level of the liquid. The leak detector includes a liquid inlet/outlet portion through which the liquid in the tank flows in and out, a flow-rate measuring unit configured to measure an amount of flow of the liquid inside the leak detector, and a liquid retaining portion configured to retain liquid flowing therein through the liquid inlet/outlet portion. A lower end of the leak detector is detachably attached to a bottom plate of the tank, and an upper end of the leak detector is supported in a gauging port in a top plate in such a manner that the leak detector is movable in a vertical direction.
摘要翻译： 泄漏检测系统包括：泄漏检测器，其基于液体液面的波动来检测储存在罐中的液体的泄漏。 泄漏检测器包括液体入口/出口部分，罐中的液体通过其流入和流出;流量测量单元，被配置为测量泄漏检测器内部的液体的流量;液体保持部分， 保持通过液体入口/出口部分流入其中的液体。 泄漏检测器的下端可拆卸地附接到罐的底板，并且检漏器的上端被支撑在顶板中的测量口中，使得检漏器可在垂直方向上移动 。
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公开(公告)号：US20080184775A1
公开(公告)日：2008-08-07
申请号：US11857102
申请日：2007-09-18
CPC分类号： G01N33/2829 , G01N27/185
摘要： A fluid identification device includes a fluid detection part which is equipped with a temperature detector for fluid detection and a heating element disposed in the vicinity of the temperature detector and disposed on the identification target fluid side, a fluid detection circuit connected to the fluid detection part and an identification operation part which performs identification of an identification target fluid based on the output of the fluid detection circuit are contained in an identification sensor module main body.
摘要翻译： 流体识别装置包括：流体检测部，其配备有用于流体检测的温度检测器，以及设置在温度检测器附近并设置在识别目标流体侧的加热元件，流体检测电路，连接到流体检测部 并且基于所述流体检测电路的输出来执行识别目标流体的识别的识别操作部分被包含在识别传感器模块主体中。
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6.发明申请Flow rate measuring method and flowmeter, flow rate measuring section package used for them and flow rate measuring unit using them, and piping leakage inspection device using flowmeter 有权流量测量方法和流量计，用于它们的流量测量部件和使用它们的流量测量单元，以及使用流量计的管道泄漏检测装置公开(公告)号：US20060005620A1
公开(公告)日：2006-01-12
申请号：US11198799
申请日：2005-08-05
IPC分类号： G01F1/68
CPC分类号： G01M3/2807 , G01F1/68 , G01F1/6847 , G01F1/699 , G01F7/00
摘要： Measurements are obtained by a computing unit based on an output Vh from an indirectly-heated constant-temperature controlling flow rate measuring section (16) and an output Vout from a two-constant-point temperature difference detecting flow rate measuring sections (18a, 18b). In the flow rate measuring section (16), a heating element (163) is feedback-controlled based on a detected temperature by a heat sensing element (162) to obtain an output Vh based on the feedback-controlled condition. An output Vout is obtained from flow rate measuring sections (18a, 18b) based on the detected temperature difference between a heat sensing element (182) disposed on the liquid-flow-direction upstream side of the flow-rate measuring section (16) and a temperature sensing element disposed on the downstream side. A computing unit outputs as a measurement a flow rate obtained based on the output Vh in a flow rate region where a flow rate is larger than a predetermined boundary flow rate, and outputs as a measurement a flow rate obtained based on the output Vout in a flow rate region where it is less than a boundary flow rate. Accordingly, a flow rate is measured with good precision and sensitivity over a wide flow rate range from a trace-amount flow rate region to a comparatively large flow rate region.
摘要翻译： 由计算单元基于来自间接加热的恒温控制流量测量部（16）的输出Vh和来自两个恒定点温度差检测流量测量部（18a， 18 b）。 在流量测量部分（16）中，基于检测到的温度由热敏元件（162）反馈控制加热元件（163），以基于反馈控制条件获得输出Vh。 基于流量测量部（16）的液流方向上游侧设置的感热元件（182）之间的检测温差，从流量测量部（18a，18b）获得输出Vout， ）和设置在下游侧的温度感测元件。 计算单元作为测量输出在流量大于预定边界流量的流量区域中基于输出Vh获得的流量，并作为测量输出基于输出Vout获得的流量 流量区域小于边界流量。 因此，在从微量流量区域到较大流量区域的宽流量范围内，以高精度和高灵敏度测量流量。
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公开(公告)号：US06973827B2
公开(公告)日：2005-12-13
申请号：US10508095
申请日：2003-03-18
CPC分类号： G01M3/2807 , G01F1/68 , G01F1/6847 , G01F1/699 , G01F7/00
摘要： Measurements are obtained by a computing unit based on an output Vh from an indirectly-heated constant-temperature controlling flow rate measuring section (16) and an output Vout from a two-constant-point temperature difference detecting flow rate measuring sections (18a, 18b). In the flow rate measuring section (16), a heating element (163) is feedback-controlled based on a detected temperature by a heat sensing element (162) to obtain an output Vh based on the feedback-controlled condition. An output Vout is obtained from flow rate measuring sections (18a, 18b) based on the detected temperature difference between a heat sensing element (182) disposed on the liquid-flow-direction upstream side of the flow rate measuring section (16) and a temperature sensing element disposed on the downstream side. A computing unit outputs as a measurement a flow rate obtained based on the output Vh in a flow rate region where a flow rate is larger than a predetermined boundary flow rate, and outputs as a measurement a flow rate obtained based on the output Vout in a flow rate region where it is less than a boundary flow rate. Accordingly, a flow rate is measured with good precision and sensitivity over a wide flow rate range from a trace-amount flow rate region to a comparatively large flow rate region.
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公开(公告)号：US06920778B2
公开(公告)日：2005-07-26
申请号：US10498433
申请日：2002-12-13
CPC分类号： G01M3/3254
摘要： A device placed in a tank and used for detecting a leakage of liquid in the tank. Vertical measurement tube passages (10, 14) into which the liquid in the tank is introduced have a measurement tube (10) and a measurement thin tube (14). The measurement thin tube (14) communicates with the measurement tube and is located lower than the measurement tube. The measurement thin tube has a cross-sectional area that is equal to or smaller than {fraction (1/50)} of that of the measurement tube. A thermal flow sensor (16) used for measuring a liquid flow rate is attached to the measurement thin tube (14). There is provided leakage detecting means (22) for detecting a leakage of liquid in the tank according to the flow rate value measured by the sensor. The leakage detecting means generates a leakage detection signal when a flow rate value measured by the sensor is within a range greater than 0 and smaller than the flow rate value obtained when liquid is added to the tank or when the liquid in the tank is taken out. Thus, even a leakage of a very small amount is detected easily and accurately without stopping the use of the tank.
摘要翻译： 放置在罐中并用于检测罐中液体泄漏的装置。 导入罐中的液体的垂直测量管道（10,14）具有测量管（10）和测量细管（14）。 测量细管（14）与测量管连通，位于测量管的下方。 测量细管的截面积等于或小于{分数（测量管的1/50），用于测量液体流量的热流量传感器（16）附接到测量薄 管（14），设有泄漏检测装置（22），用于根据由传感器测量的流量值检测罐内液体的泄漏，泄漏检测装置在流量值由 传感器在大于0的范围内并且小于当液体被添加到罐中时或当罐中的液体被取出时获得的流量值，因此即使容易且准确地检测到极少量的泄漏 而不停止使用坦克。
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公开(公告)号：US20050011253A1
公开(公告)日：2005-01-20
申请号：US10498433
申请日：2002-12-13
CPC分类号： G01M3/3254
摘要： A device placed in a tank and used for detecting a leakage of liquid in the tank. Vertical measurement tube passages (10, 14) into which the liquid in the tank is introduced have a measurement tube (10) and a measurement thin tube (14). The measurement thin tube (14) communicates with the measurement tube and is located lower than the measurement tube. The measurement thin tube has a cross-sectional area that is equal to or smaller than {fraction (1/50)} of that of the measurement tube. A thermal flow sensor (16) used for measuring a liquid flow rate is attached to the measurement thin tube (14). There is provided leakage detecting means (22) for detecting a leakage of liquid in the tank according to the flow rate value measured by the sensor. The leakage detecting means generates a leakage detection signal when a flow rate value measured by the sensor is within a range greater than 0 and smaller than the flow rate value obtained when liquid is added to the tank or when the liquid in the tank is taken out. Thus, even a leakage of a very small amount is detected easily and accurately without stopping the use of the tank.
摘要翻译： 放置在罐中并用于检测罐中液体泄漏的装置。 导入罐中的液体的垂直测量管道（10,14）具有测量管（10）和测量细管（14）。 测量细管（14）与测量管连通，位于测量管的下方。 测量细管的截面积等于或小于{分数（测量管的1/50），用于测量液体流量的热流量传感器（16）附接到测量薄 管（14），设有泄漏检测装置（22），用于根据由传感器测量的流量值检测罐内液体的泄漏，泄漏检测装置在流量值由 传感器在大于0的范围内并且小于当液体被添加到罐中时或当罐中的液体被取出时获得的流量值，因此即使容易且准确地检测到极少量的泄漏 而不停止使用坦克。
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10.发明授权Flow rate measuring method and flowmeter, flow rate measuring section package used for them and flow rate measuring unit using them, and piping leakage inspection device using flowmeter 有权流量测量方法和流量计，用于它们的流量测量部件和使用它们的流量测量单元，以及使用流量计的管道泄漏检测装置公开(公告)号：US07028533B2
公开(公告)日：2006-04-18
申请号：US11198799
申请日：2005-08-05
IPC分类号： G01M3/04
CPC分类号： G01M3/2807 , G01F1/68 , G01F1/6847 , G01F1/699 , G01F7/00
摘要： Measurements are obtained by a computing unit based on an output Vh from an indirectly-heated constant-temperature controlling flow rate measuring section (16) and an output Vout from a two-constant-point temperature difference detecting flow rate measuring sections (18a, 18b). In the flow rate measuring section (16), a heating element (163) is feedback-controlled based on a detected temperature by a heat sensing element (162) to obtain an output Vh based on the feedback-controlled condition. An output Vout is obtained from flow rate measuring sections (18a, 18b) based on the detected temperature difference between a heat sensing element (182) disposed on the liquid-flow-direction upstream side of the flow rate measuring section (16) and a temperature sensing element disposed on the downstream side. A computing unit outputs as a measurement a flow rate obtained based on the output Vh in a flow rate region where a flow rate is larger than a predetermined boundary flow rate, and outputs as a measurement a flow rate obtained based on the output Vout in a flow rate region where it is less than a boundary flow rate. Accordingly, a flow rate is measured with good precision and sensitivity over a wide flow rate range from a trace-amount flow rate region to a comparatively large flow rate region.
摘要翻译： 由计算单元基于来自间接加热的恒温控制流量测量部（16）的输出Vh和来自两个恒定点温度差检测流量测量部（18a， 18 b）。 在流量测量部分（16）中，基于检测到的温度由热敏元件（162）反馈控制加热元件（163），以基于反馈控制条件获得输出Vh。 基于流量测量部（16）的液流方向上游侧设置的感热元件（182）之间的检测温度差，从流量测量部（18a，18b）获得输出Vout， 以及设置在下游侧的温度感测元件。 计算单元作为测量输出在流量大于预定边界流量的流量区域中基于输出Vh获得的流量，并作为测量输出基于输出Vout获得的流量 流量区域小于边界流量。 因此，在从微量流量区域到较大流量区域的宽流量范围内，以高精度和高灵敏度测量流量。
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