公开(公告)号：US20050211570A1

公开(公告)日：2005-09-29

申请号：US11086191

申请日：2005-03-21

申请人： Vladimir Jovancicevic ,  Wai Mok ,  Carlos Menendez ,  Paul Hammonds

发明人： Vladimir Jovancicevic ,  Wai Mok ,  Carlos Menendez ,  Paul Hammonds

IPC分类号： G01N17/02 ,  G01N27/26

CPC分类号： G01N17/02

摘要： The invention provides an electrochemical noise method, apparatus and system for estimating parameters of interest related to corrosion rates of an electrically conductive article, the method comprising: placing a working electrode, a reference electrode, and a counter electrode in an environment of interest; measuring potential at open circuit between the working electrode and the reference electrode over time; placing the working electrode under a potentiostatic control; measuring current between the working electrode and the counter electrode for a predetermined period of time, the period of time of measurements may be extended to include a transient event; and estimating the corrosion rate.

摘要翻译： 本发明提供了一种用于估计与导电制品的腐蚀速率有关的参数的电化学噪声方法，装置和系统，所述方法包括：将工作电极，参比电极和对电极放置在感兴趣的环境中; 测量工作电极与参考电极之间的开路电位随时间的变化; 将工作电极置于恒电位控制下; 在预定的时间段内测量工作电极和对电极之间的电流，测量时间可以延长到包括瞬时事件; 并估算腐蚀速率。

公开(公告)号：US20070017822A1

公开(公告)日：2007-01-25

申请号：US11499630

申请日：2006-08-04

申请人： Raymond Gill ,  Vladimir Jovancicevic ,  Wai Mok ,  Paul Hammonds

发明人： Raymond Gill ,  Vladimir Jovancicevic ,  Wai Mok ,  Paul Hammonds

IPC分类号： G01N17/04 ,  G01N27/26

CPC分类号： G01N17/02

摘要： Simultaneous determination of general corrosion and localized corrosion rate measurements is achieved with polarization applied by the electrodes themselves rather than externally applied polarization. Two or more working electrodes may be galvanically coupled. A localized pitting corrosion event on one of the electrodes will lead to a potential transient. The area within the potential transient is measured with the baseline being the initial starting potential. This gives localized corrosion as a function of time. The relationship Rp=ΔV/ΔI is calculated, where Rp is the polarization resistance of the working electrodes and is a measure of generalized corrosion rate.

摘要翻译： 通过电极自身施加的极化而不是外部施加的极化来实现一般腐蚀和局部腐蚀速率测量的同时测定。 两个或多个工作电极可以电耦合。 其中一个电极上的局部点腐蚀事件将导致潜在的瞬变。 以基线为初始起始电位来测量潜在瞬态内的面积。 这使得局部腐蚀作为时间的函数。 计算关系Rp = DeltaV /ΔI，其中Rp是工作电极的极化电阻，并且是广义腐蚀速率的量度。

公开(公告)号：US20060144719A1

公开(公告)日：2006-07-06

申请号：US11262861

申请日：2005-10-31

申请人： Raymond Gill ,  Vladimir Jovancicevic ,  Wai Mok ,  Paul Hammonds

发明人： Raymond Gill ,  Vladimir Jovancicevic ,  Wai Mok ,  Paul Hammonds

IPC分类号： G01N27/26 ,  G01N17/04

CPC分类号： G01N17/02

摘要： An electrochemical noise method, apparatus and system calculates parameters of interest related to corrosion rates of an electrically conductive article. The method involves placing a test electrode, a reference electrode, and an auxiliary electrode in an environment of interest; placing the test electrode under potentiostatic control regime for a potential scan; measuring the relationship of current v. potential (polarization resistance, Rp) of the test electrode relative to the reference electrode during a first period; switching from potentiostatic control to the open circuit potential (OCP) of the test electrode; monitoring the OCP of the test electrode during a second period; determining ΔI from the relationship Rp=ΔV/ΔI, where ΔV is measured over a second period of time; and calculating the localized corrosion from the measured potential and current data.

摘要翻译： 电化学噪声方法，装置和系统计算与导电制品的腐蚀速率有关的参数。 该方法包括在感兴趣的环境中放置测试电极，参考电极和辅助电极; 将测试电极置于恒电位控制方式进行电位扫描; 在第一时段期间测量测试电极相对于参考电极的电流v电位（极化电阻，R BAT）的关系; 从恒电位控制切换到测试电极的开路电位（OCP）; 在第二期间监测测试电极的OCP; 根据关系RΔPΔV/ΔI确定ΔI，其中在第二时间段内测量DeltaV; 并从测量的电位和当前数据计算局部腐蚀。

公开(公告)号：US20080283418A1

公开(公告)日：2008-11-20

申请号：US12116003

申请日：2008-05-06

申请人： Vladimir Jovancicevic ,  Carlos M. Menendez ,  Paul Hammonds ,  Wai Yeung Mok

发明人： Vladimir Jovancicevic ,  Carlos M. Menendez ,  Paul Hammonds ,  Wai Yeung Mok

IPC分类号： G01N17/04

CPC分类号： G01N17/02

摘要： An electrochemical noise method, apparatus and system may be used to estimate and/or calculate parameters of interest related to corrosion rates of an electrically conductive article. The apparatus involves a working electrode (having substantially the same composition of the electrically conductive article), a reference electrode, and a counter electrode in an environment of interest. The working electrode is placed under potentiostatic control. A current transient between the working electrode and the counter electrode is measured. The working electrode is switched to open potential. A potential transient is measured over the duration of a localized corrosion event. The localized corrosion may then be calculated based on the measured potential transient and the current transient.

摘要翻译： 可以使用电化学噪声方法，装置和系统来估计和/或计算与导电制品的腐蚀速率相关的感兴趣参数。 该设备包括在感兴趣的环境中的工作电极（具有基本相同的导电制品组成），参考电极和对电极。 工作电极置于恒电位控制下。 测量工作电极和对电极之间的电流瞬变。 工作电极切换到开放电位。 在局部腐蚀事件的持续时间内测量潜在的瞬态。 然后可以基于测量的电位瞬变和电流瞬态来计算局部腐蚀。

公开(公告)号：US20080047614A1

公开(公告)日：2008-02-28

申请号：US11926928

申请日：2007-10-29

申请人： Paul Hammonds ,  Vladimir Jovancicevic ,  C. Means ,  David Green

发明人： Paul Hammonds ,  Vladimir Jovancicevic ,  C. Means ,  David Green

IPC分类号： F17D1/17

CPC分类号： F17D1/16 ,  Y10T137/0329 ,  Y10T137/0391 ,  Y10T137/2531 ,  Y10T137/2703 ,  Y10T137/4238 ,  Y10T137/87652

摘要： An apparatus for reducing drag in a fluid stream involves admixing the components of a drag reducer to form an incipient drag reducer and injecting the incipient drag reducer into the fluid stream wherein the drag reducer components are admixed at the site of the fluid stream.

摘要翻译： 用于减少流体流中的阻力的装置包括混合减阻剂的组分以形成初始减阻剂并将初始减阻剂注入到流体流中，其中减阻剂组分在流体流的位置混合。

公开(公告)号：US08506777B2

公开(公告)日：2013-08-13

申请号：US13364760

申请日：2012-02-02

申请人： Paul Hammonds ,  Vladimir Jovancicevic

发明人： Paul Hammonds ,  Vladimir Jovancicevic

IPC分类号： G01N27/26

CPC分类号： G01N17/04

摘要： A localized corrosion monitoring (LCM) device is modified to obtain polarization resistance (Rp) from electrical resistance of a probe having a strip of metal under investigation (test electrode), a reference electrode and a temperature sensor (e.g. thermocouple). This configuration allows the probe to be used in areas where only a thin film of conductive fluid is available or required to provide potential monitoring. Thus, the applicability of the LCM technique is broadened. All the above devices are expected to be configured in one item of equipment, except for the probe which may be remotely located from the rest of the equipment.

摘要翻译： 修改局部腐蚀监测（LCM）装置以从具有正在研究的金属条（试验电极），参考电极和温度传感器（例如热电偶）的探针的电阻获得极化电阻（Rp）。 该配置允许探针用于只有导电流体薄膜可用或需要提供潜在监测的区域。 因此，LCM技术的适用性得到拓宽。 预期所有上述设备都将配置在一个设备项目中，除了可能远离设备其余部分的探头。

公开(公告)号：US08109161B2

公开(公告)日：2012-02-07

申请号：US12393202

申请日：2009-02-26

申请人： Vladimir Jovancicevic ,  Sunder Ramachandran ,  Paul Hammonds

发明人： Vladimir Jovancicevic ,  Sunder Ramachandran ,  Paul Hammonds

IPC分类号： G01M19/00

CPC分类号： G01N25/68 ,  G01G3/16 ,  G01N5/04 ,  G01N17/008 ,  G01N29/022 ,  G01N2030/025 ,  G01N2291/02408 ,  G01N2291/0256

摘要： Solids deposition in a gas environment, such as a gas transmission line or pipeline are measured using metal-coated quartz crystal microbalance (QCM) in a QCM probe within a high pressure gas chamber in the gas environment. The metal coated on the QCM may be iron, iron alloys and/or iron oxide. The weight measurements are conducted at a constant (ΔT) or controlled (T=f(t)) temperature between the high pressure gas chamber and the QCM probe. The weight gain during a CE cycle is associated with the solids formation rate.

摘要翻译： 在气体环境中的高压气体室内的QCM探针中，使用金属涂覆的石英晶体微量天平（QCM）测量诸如气体输送管线或管道之类的气体环境中的固体沉积。 涂覆在QCM上的金属可以是铁，铁合金和/或氧化铁。 重量测量在高压气室和QCM探头之间的恒定（＆Dgr; T）或受控（T = f（t））温度下进行。 CE循环期间的体重增加与固体形成速率有关。

公开(公告)号：US07368050B2

公开(公告)日：2008-05-06

申请号：US11086191

申请日：2005-03-21

申请人： Vladimir Jovancicevic ,  Wai Yeung Mok ,  Carlos M. Menendez ,  Paul Hammonds

发明人： Vladimir Jovancicevic ,  Wai Yeung Mok ,  Carlos M. Menendez ,  Paul Hammonds

IPC分类号： G01N17/04

CPC分类号： G01N17/02

摘要： The invention provides an electrochemical noise method, apparatus and system for estimating parameters of interest related to corrosion rates of an electrically conductive article, the method comprising: placing a working electrode, a reference electrode, and a counter electrode in an environment of interest; measuring potential at open circuit between the working electrode and the reference electrode over time; placing the working electrode under a potentiostatic control; measuring current between the working electrode and the counter electrode for a predetermined period of time, the period of time of measurements may be extended to include a transient event; and estimating the corrosion rate.

摘要翻译： 本发明提供了一种用于估计与导电制品的腐蚀速率有关的参数的电化学噪声方法，装置和系统，所述方法包括：将工作电极，参比电极和对电极放置在感兴趣的环境中; 测量工作电极与参考电极之间的开路电位随时间的变化; 将工作电极置于恒电位控制下; 在预定的时间段内测量工作电极和对电极之间的电流，测量时间可以延长到包括瞬时事件; 并估算腐蚀速率。

公开(公告)号：US07287540B2

公开(公告)日：2007-10-30

申请号：US10789515

申请日：2004-02-27

申请人： Paul Hammonds ,  Vladimir Jovancicevic ,  C. Mitch Means ,  David Green

发明人： Paul Hammonds ,  Vladimir Jovancicevic ,  C. Mitch Means ,  David Green

IPC分类号： F17D1/16 ,  G05D11/13

CPC分类号： F17D1/16 ,  Y10T137/0329 ,  Y10T137/0391 ,  Y10T137/2531 ,  Y10T137/2703 ,  Y10T137/4238 ,  Y10T137/87652

摘要： Disclosed is a method of reducing drag in a fluid stream. The method includes admixing the components of a drag reducer to form an incipient drag reducer and injecting the incipient drag reducer into the fluid stream wherein the drag reducer components are admixed at the site of the fluid stream.

摘要翻译： 公开了一种减少流体流中的阻力的方法。 该方法包括混合减阻剂的组分以形成初始减阻剂，并将初始减阻剂注入到流体流中，其中减阻剂组分在流体流的位置混合。

公开(公告)号：US20120132526A1

公开(公告)日：2012-05-31

申请号：US13364760

申请日：2012-02-02

申请人： Paul Hammonds ,  Vladimir Jovancicevic

发明人： Paul Hammonds ,  Vladimir Jovancicevic

IPC分类号： G01N27/26

CPC分类号： G01N17/04

摘要： A localized corrosion monitoring (LCM) device is modified to obtain polarization resistance (Rp) from electrical resistance of a probe having a strip of metal under investigation (test electrode), a reference electrode and a temperature sensor (e.g. thermocouple). This configuration allows the probe to be used in areas where only a thin film of conductive fluid is available or required to provide potential monitoring. Thus, the applicability of the LCM technique is broadened. All the above devices are expected to be configured in one item of equipment, except for the probe which may be remotely located from the rest of the equipment.

摘要翻译： 修改局部腐蚀监测（LCM）装置以从具有正在研究的金属条（试验电极），参考电极和温度传感器（例如热电偶）的探针的电阻获得极化电阻（Rp）。 该配置允许探针用于只有导电流体薄膜可用或需要提供潜在监测的区域。 因此，LCM技术的适用性得到拓宽。 预期所有上述设备都将配置在一个设备项目中，除了可能远离设备其余部分的探头。