Cleaning method for heat exchangers
    21.
    发明授权
    Cleaning method for heat exchangers 失效
    热交换器清洗方法

    公开(公告)号:US5413168A

    公开(公告)日:1995-05-09

    申请号:US105571

    申请日:1993-08-13

    申请人: Allen J. Baum

    发明人: Allen J. Baum

    IPC分类号: B08B9/02 F28G9/00 F22B37/48

    摘要: An improved method for cleaning heat exchangers, wherein a first liquid containing a cleaning agent is used to remove substantially all of the accumulated sludge and deposits from the surfaces of the heat exchanger, and a second liquid containing a cleaning agent is used to remove deposits from the crevice regions of the heat exchanger. The concentration of cleaning agent in the second liquid and/or the duration of exposure for the second liquid are preferably greater than those of the first liquid, because the risk of corrosion is reduced as a result of a lower concentration of ferric ions in the second liquid. Furthermore, improved crevice region cleaning is obtained with the second liquid because the available cleaning agent is not depleted by the large volume of sludge and deposits removed by the first liquid. Mechanical cleaning techniques such as pressure pulse cleaning may be utilized with either or both of the cleaning liquids. Additional liquids may be introduced into the heat exchanger to provide further cleaning action or to facilitate flushing of the previous cleaning liquids.

    摘要翻译: 一种用于清洁热交换器的改进方法,其中使用含有清洁剂的第一液体来从热交换器的表面基本上除去所有累积的污泥和沉积物,并且使用含有清洁剂的第二液体来除去沉积物 换热器的缝隙区域。 第二液体中的清洗剂的浓度和/或第二液体的暴露持续时间优选大于第一液体的浓度,因为由于第二液体中的铁离子的浓度较低,腐蚀的风险降低 液体。 此外,由于可用的清洁剂不被大量的污泥和由第一液体除去的沉积物所耗尽,所以可以利用第二液体获得改进的缝隙区域清洁。 诸如压力脉冲清洁的机械清洁技术可以与一种或两种清洁液一起使用。 可以将额外的液体引入热交换器以提供进一步的清洁作用或便于冲洗以前的清洁液体。

    Tube corrosion accelerator
    22.
    发明授权
    Tube corrosion accelerator 失效
    管腐蚀加速器

    公开(公告)号:US5361284A

    公开(公告)日:1994-11-01

    申请号:US26047

    申请日:1993-03-04

    IPC分类号: F22B35/00 G01N17/00 G21C17/00

    CPC分类号: G01N17/00 F22B35/004

    摘要: A device for creating a corrosive condition and monitoring that condition, adapted for use in active fluid heat exchangers, has a sealed tube having corrosion sites spaced apart on its exterior. Structure positioned on the outside of the tube at the corrosion sites provide crevices for retaining corrosive sludges in contact with the corrosion sites. The interior of the tube is pressurized with a gas to stress the tube thereby accelerating corrosion of the surface. Heat is provided to the corrosion sites from within the tube when placed within a fluid reservoir, such as the secondary side of a fluid heat exchanger. The heat concentrates corrosive chemicals at the corrosion sites, also accelerating corrosion. Electronic probes can be mounted in proximity to the corrosion sites for real time monitoring of the progress of corrosion.

    摘要翻译: 用于产生腐蚀性状况并监测适用于活性流体热交换器的状态的装置具有密封管,该密封管的腐蚀位置在其外部间隔开。 位于腐蚀部位管外侧的结构提供了保留与腐蚀部位接触的腐蚀性污泥的缝隙。 管的内部用气体加压以对管进行加压,从而加速表面的腐蚀。 当放置在流体储存器(例如流体热交换器的次级侧)内时,将热量从管内提供给腐蚀部位。 热量集中在腐蚀部位的腐蚀性化学物质,也加速腐蚀。 电子探针可以安装在腐蚀部位附近,以便实时监测腐蚀进程。

    Chemical cleaning method for steam generators utilizing pressure pulsing
    23.
    发明授权
    Chemical cleaning method for steam generators utilizing pressure pulsing 失效
    使用压力脉动的蒸汽发生器的化学清洗方法

    公开(公告)号:US5154197A

    公开(公告)日:1992-10-13

    申请号:US772137

    申请日:1991-10-09

    IPC分类号: F22B37/48 F28G7/00 F28G9/00

    摘要: An improved method for removing sludge and corrosion products from the interior of a heat exchanger vessel, such as a nuclear steam generator, which comprises the steps of generating a series of pressure pulses within a liquid chelate-containing chemical cleaning agent after the agent has been introduced into the interior of the vessel to create shock waves in the liquid for dislodging, dissolving and fluidizing sludge and corrosion products. The liquid chemical cleaning agent is removed from the vessel after only about 10 to 70 percent of what would have been its normal residence time without the pressure pulses. The method further includes the steps of simultaneously recirculating the chemical cleaning agent through a filter assembly during the pressure pulsing operation in order to remove fluidized sludge and corrosion products dislodged by the pressure pulsing, thereby affording them no opportunity to resettle back onto the surfaces of the heat exchanger vessel and interfere with the chemical cleaning of the vessel. The method reduces not only the time required for a particular chemical cleaning agent to effectively clean the vessel, but further reduces the number of times such chemicals need to be introduced into the vessel, which in turn results in the production of less radioactive liquid waste products.

    摘要翻译: 一种用于从诸如核蒸汽发生器的热交换器容器的内部去除污泥和腐蚀产物的改进方法,其包括以下步骤:在所述试剂已经在所述液体螯合物的化学清洗剂之后产生一系列压力脉冲 引入容器的内部,以在液体中产生冲击波,用于移除,溶解和流化污泥和腐蚀产物。 只有在没有压力脉冲的情况下,其正常停留时间的大约10%至70%,液体化学清洗剂才从容器中取出。 该方法还包括以下步骤:在压力脉动操作期间同时使化学清洁剂再循环通过过滤器组件,以便除去由压力脉冲移出的流化淤渣和腐蚀产物,从而使它们无机会重新回到 热交换器容器并干扰容器的化学清洗。 该方法不仅减少了特定化学清洁剂有效清洁容器所需的时间,而且进一步减少了这种化学品需要引入容器的次数,从而导致产生较少的放射性废液产品 。

    Method and means for moving bytes in a reduced instruction set computer
    25.
    发明授权
    Method and means for moving bytes in a reduced instruction set computer 失效
    在精简指令集计算机中移动字节的方法和装置

    公开(公告)号:US4739471A

    公开(公告)日:1988-04-19

    申请号:US750701

    申请日:1985-06-28

    CPC分类号: G06F9/30043 G06F8/41 G06F9/35

    摘要: A basic instruction for moving a string of bytes in a word has been devised. Because the operations in the instruction are basic, very few variations are necessary to accommodate diversity of lengths and variables. These operations are imbedded in a single code sequence; the compiler can therefore generate exactly the minimum sequence necessary to perform the operations and can precompute many of the operands at compile time, typically completing the instruction within a single cycle time. The control necessary to optimize the operations is then in the compiler instead of the hardware.

    摘要翻译: 已经设计了用于移动单词中字节串的基本指令。 由于指令中的操作是基本操作,因此需要极少的变化来适应长度和变量的多样性。 这些操作嵌入在一个代码序列中; 因此,编译器可以精确地生成执行操作所需的最小序列,并且可以在编译时预先计算许多操作数,通常在单个周期内完成指令。 然后在编译器而不是硬件中进行优化操作所需的控制。

    Process for the accelerated cleaning of the restricted areas of the
secondary side of a steam generator
    26.
    发明授权
    Process for the accelerated cleaning of the restricted areas of the secondary side of a steam generator 失效
    用于加速清洁蒸汽发生器二次侧限制区域的方法

    公开(公告)号:US4632705A

    公开(公告)日:1986-12-30

    申请号:US591638

    申请日:1984-03-20

    申请人: Allen J. Baum

    发明人: Allen J. Baum

    IPC分类号: G21F9/28 F22B37/48 B08B3/10

    CPC分类号: F22B37/483

    摘要: A process for cleaning out deposits collected in the restricted areas of the secondary side of a steam generator of a nuclear power plant system, where the concentration of an aqueous organic cleaning agent solution is increased in the restricted areas, relative to the remainder of the solution. The solution is heated, at an initial pressure which prevents boiling of the solution, and the pressure is reduced to effect localized flashing and boiling of the solution in the restricted areas. After a period of time, the pressure is increased and the cleaning agent solution, containing solubilized deposits, is withdrawn from the secondary side of the steam generator. The heating temperature and pressure will vary depending upon the type of deposit to be removed, either ferrous-type or copper-type deposits.

    摘要翻译: 一种清除收集在核动力装置系统的蒸汽发生器的二次侧限制区域中的沉积物的方法,其中在限制区域中有机清洁剂水溶液的浓度相对于溶液的其余部分增加 。 在初始压力​​下加热该溶液,该初始压力可防止溶液沸腾,并且降低压力以在限制区域内实现溶液的局部闪蒸和沸腾。 一段时间后,压力增加,含有溶解沉积物的清洗剂溶液从蒸汽发生器的次级侧排出。 加热温度和压力将根据待除去的沉积物的类型而变化,有铁型或铜型沉积物。