Methods for monitoring fouling of aqueous systems including enhanced heat exchanger tubes
    1.
    发明申请
    Methods for monitoring fouling of aqueous systems including enhanced heat exchanger tubes 有权
    用于监测包括增强换热器管在内的水系统结垢的方法

    公开(公告)号:US20070089494A1

    公开(公告)日:2007-04-26

    申请号:US11393823

    申请日:2006-03-31

    IPC分类号: G01N33/18

    摘要: Novel methods for monitoring and recording fouling of aqueous systems are disclosed. The methods employ a heat transfer test assembly including an outer tube member, a heating rod positioned within the outer tube member, a ribbed tube sleeve fitted over the heating rod and thermocouples for sensing the wall temperature of heating rod. The heat transfer test assembly is connected to a monitoring and recording assembly that is connected to or includes a piping assembly. The piping assembly and the heat transfer test assembly are placed in fluid communication with a heat exchanger. Fouling determinations of fluid flowing through the piping assembly are made at varying flow rates with simultaneous monitoring and recording of the flow rates together with data, such as corrosion, pH, conductivity, and the like.

    摘要翻译: 公开了用于监测和记录水性体系结垢的新方法。 该方法采用热传递试验组件,其包括外管构件,位于外管构件内的加热棒,安装在加热棒上的肋管套和热电偶,用于感测加热棒的壁温。 传热测试组件连接到连接到或包括管道组件的监控和记录组件。 管道组件和传热测试组件被放置成与热交换器流体连通。 流过管道组件的流体的结垢确定以不同的流速进行,同时监测和记录流速以及诸如腐蚀,pH,电导率等的数据。

    Process for producing a pressure vessel head or shell
    3.
    发明授权
    Process for producing a pressure vessel head or shell 失效
    用于生产压力容器头或壳的方法

    公开(公告)号:US4235361A

    公开(公告)日:1980-11-25

    申请号:US40596

    申请日:1979-05-18

    IPC分类号: F17C1/04 B23K31/02

    摘要: A layer head or shell for a pressure vessel is formed by building up successive wraps over a liner, each wrap consisting of a plurality of segments which fit together such that the wrap completely covers the liner or the wrap immediately under it. Each segment is curved to conform to the surface over which it is installed, and once in place a seal is provided along its periphery. Air is evacuated from the space between the wrap segment and the underlying surface so that air at atmospheric pressure will force the wrap segment down tightly against the underlying surface. During this time tack welds are made along the periphery of the wrap segment to join it to the underlying layer. Then the vacuum is released and a final or continuous weld is made along the periphery. As the weld cools it places the underlying layers in a state of precompression.

    摘要翻译: 用于压力容器的层头或壳通过在衬套上建立连续的包裹而形成,每个包裹由多个段组成,所述多个节组合在一起,使得包裹完全覆盖衬垫或其下面的包裹。 每个段都是弯曲的,以符合其所安装的表面,一旦沿着其周边设置密封。 空气从包裹部分和下面的表面之间的空间排出,使得大气压下的空气将迫使包裹片段紧紧地压靠下面的表面。 在此期间,沿着包裹片段的周边进行定位焊接以将其连接到下层。 然后释放真空并沿周边进行最终或连续焊接。 当焊接冷却时,将下层置于预压状态。

    Performance-based control system
    4.
    发明授权
    Performance-based control system 失效
    基于性能的控制系统

    公开(公告)号:US5855791A

    公开(公告)日:1999-01-05

    申请号:US610146

    申请日:1996-02-29

    摘要: A method for detecting and controlling cooling system characteristics. A flow rate of make-up cooling medium is measured. A conductivity of the make-up cooling medium is measured. A conductivity of a recirculating cooling medium is measured. A treatment material feed rate is determined based upon the formula: ##EQU1## where X is a treatment feed rate of a treatment compound, .OMEGA. is a desired concentration of the treatment compound, and K is a constant. A corrosion rate of the recirculating cooling medium is measured. A desired corrosion rate of the recirculating cooling medium is determined. A feed rate of a corrosion inhibitor is calculated according to the following formula:Y=(X)�1+.alpha.(CORR.sub.MEASURED /CORR.sub.SETPOINT)!,where .alpha. is a cascade factor that varies in a step-wise manner depending upon the value of CORR.sub.MEASURED /CORR.sub.SETPOINT and has a value between about 0.1 and about 8.0. A corrosion inhibitor is then fed at the corrosion inhibitor feed rate.

    摘要翻译: 一种用于检测和控制冷却系统特性的方法。 测量补充冷却介质的流量。 测量补充冷却介质的电导率。 测量循环冷却介质的电导率。 处理材料进料速率基于以下公式确定:其中X是处理化合物的处理进料速率,OMEGA是处理化合物的所需浓度,K是常数。 测量循环冷却介质的腐蚀速率。 确定循环冷却介质的期望的腐蚀速率。 根据下式计算腐蚀抑制剂的进料速率:Y =(X)[1+α(CORRMEASURED / CORRSETPOINT)],其中α是逐级变化的级联因子,其取决于 CORRMEASURED / CORRSETPOINT,其值在约0.1至约8.0之间。 然后以腐蚀抑制剂进料速率进料缓蚀剂。