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公开(公告)号：US4262705A
公开(公告)日：1981-04-21
申请号：US38659
申请日：1979-05-14
CPC分类号： F22B37/20 , F22B1/1815
摘要： In a hot gas duct wherein it is desirable to retain heat within the duct by insulated sidewalls and wherein the duct is substantially longer than it is wide, it is necessary to support the duct against excessive deformation in the lateral direction. Exterior support structures are unacceptable because locating cross members or struts becomes problematic. Interior support structures must be carefully designed so as not to inhibit thermal expansion and contraction within the duct. It is proposed that a lateral bracing system or truss be disposed entirely inside the hot gas path and provision be made to ensure adequate facility for uniform expansion of the truss within the hot gas duct.
摘要翻译： 在热气管道中，希望通过绝缘侧壁将热量保持在管道内，并且其中管道基本上长于其宽度，必须支撑管道以防止在横向上的过度变形。 外部支撑结构是不可接受的，因为定位横梁或支柱变得有问题。 内部支撑结构必须仔细设计，以免阻碍管道内的热膨胀和收缩。 建议将横向支撑系统或桁架完全设置在热气体路径内，并提供足够的设备以确保桁架在热气体管道内的均匀膨胀。
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公开(公告)号：US4246872A
公开(公告)日：1981-01-27
申请号：US34377
申请日：1979-04-30
CPC分类号： F28D7/1623 , F28D7/08 , F28D7/085 , F28F9/013 , F28F2265/26
摘要： In a counterflow non-contact heat exchanger, tube bundles carry fluid back and forth across a hot gas path. As the fluid in the tubes flows vertically downward the temperature of the fluid rises. As the gas rises in the heat exchanger it loses heat due to the heat exchange process. This means that the temperature profile of a tube bundle will show a greater thermal expansion in the lower tubes. The present invention seeks to provide an efficient and improved support arrangement for heat exchanger tubes to accommodate this phenomenon by supplying a pivotally mounted tube support plate which will rotate and translate slightly from a substantially vertical plane to accommodate thermal expansion. Further, if there are multiple tube bundles, additional tube support plate sections will allow a tube support plate to articulate in sections to accommodate thermal movement.
摘要翻译： 在逆流非接触热交换器中，管束通过热气体路径来回运送流体。 随着管中的流体垂直向下流动，流体的温度升高。 当热交换器中的气体升高时，由于热交换过程而损失热量。 这意味着管束的温度分布将在下管中显示出更大的热膨胀。 本发明寻求提供一种用于热交换器管的有效和改进的支撑装置，以通过供应可枢转地安装的管支撑板来适应这种现象，所述管支撑板将从基本上垂直的平面旋转和平移以适应热膨胀。 此外，如果存在多个管束，则另外的管支撑板部分将允许管支撑板在部分中铰接以适应热运动。
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公开(公告)号：US4552292A
公开(公告)日：1985-11-12
申请号：US440800
申请日：1982-11-12
CPC分类号： F22B37/205 , F22B1/1869 , F22B21/28 , Y10T29/49373 , Y10T29/49378
摘要： A heat exchanger includes a number of fluid carrying tubes disposed in a hot gas flow path. One arrangement of heat exchanger tubes includes a plurality of finned serpentine tubes parallel to one another and connected to an inlet header and an outlet header. The present invention discloses a support for a serpentine tube arrangement and a method of construction for a non-contact heat exchanger.
摘要翻译： 热交换器包括设置在热气流路径中的多个流体输送管。 热交换器管的一种布置包括彼此平行并连接到入口集管和出口集管的多个翅片状蛇形管。 本发明公开了一种用于非接触式热交换器的蛇形管装置的支撑件和构造方法。
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公开(公告)号：US4066123A
公开(公告)日：1978-01-03
申请号：US753745
申请日：1976-12-23
CPC分类号： E21B43/12 , F04B47/08 , F04B49/007 , F04B49/103
摘要： This invention is a hydraulic pumping unit which uses a cyclone feed pump means to vary the speed of the above-ground pump, while still providing proper cleaning of the power fluid for the downhole pump. The ability to conveniently change the speed of the above-ground pump allows the speed of the pump to be reduced whenever well conditions make such a reduction appropriate, and this provides a very substantial reduction in the cost of power for the prime mover (typically an electric motor). In addition to the cyclone feed pump and a speed control means to vary the speed at which the prime mover drives the above-ground pump, this invention uses a flowback line connected from the cyclone overflow to the feed pump inlet.
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公开(公告)号：US08630294B1
公开(公告)日：2014-01-14
申请号：US13239915
申请日：2011-09-22
IPC分类号： H04L12/28
CPC分类号： H04L45/7453
摘要： An example computing device includes a prefix lookup module, and a Bloom filter that includes a set of queues. The prefix lookup module is configured to receive policy configuration information, examine a state of a queue of the set of queues, and determine whether to bypass the first Bloom filter based on the policy configuration information and the state of the queue. In one example, the prefix lookup module may be configured to, using the policy configuration information, determine to bypass the Bloom filter when the queue is full. In another example, the prefix lookup module may be configured to, using the policy configuration information, determine not to bypass the Bloom filter and send a lookup request to the Bloom filter upon determining that the queue is no longer full.
摘要翻译： 示例性计算设备包括前缀查找模块和包括一组队列的布隆过滤器。 前缀查找模块被配置为接收策略配置信息，检查队列的队列的状态，并且基于策略配置信息和队列的状态来确定是否绕过第一布隆过滤器。 在一个示例中，前缀查找模块可以被配置为，当队列已满时，使用策略配置信息来确定绕过布隆过滤器。 在另一个示例中，前缀查找模块可以被配置为：使用策略配置信息确定不绕过布隆过滤器并且在确定队列不再满的情况下向Bloom过滤器发送查找请求。
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公开(公告)号：US4427058A
公开(公告)日：1984-01-24
申请号：US449448
申请日：1982-12-13
CPC分类号： F28F9/22 , F22B1/1869 , F22B37/205 , Y10S165/405
摘要： In a non-contact heat exchanger such as a heat recovery steam generator, the performance efficiency is dependent upon full utilization of the available hot gas flow. In a heat recovery steam generator, hot gas is channeled past fluid carrying tubes whereby the tube-side fluid (water) is heated into steam. It has been discovered that gas flow along the heat exchanger sidewalls results in an unacceptable heat loss and that this loss may be corrected by the use of sidewall baffles so constructed as to obviate any alignment difficulty.
摘要翻译： 在诸如热回收蒸汽发生器的非接触热交换器中，性能效率取决于可利用的热气流的充分利用。 在热回收蒸汽发生器中，热气被引导通过流体输送管，由此管侧流体（水）被加热成蒸汽。 已经发现，沿着热交换器侧壁的气流导致不可接受的热损失，并且可以通过使用如此构造以消除任何对准难度的侧壁挡板来校正该损失。
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公开(公告)号：US4478513A
公开(公告)日：1984-10-23
申请号：US349702
申请日：1982-02-18
CPC分类号： G02B27/143 , G01J1/36 , G01J3/02 , G01J3/0205 , G01J3/021 , G01J3/08
摘要： This invention relates to an optical system which will enable easy use in the field. Known systems either require sample and reference targets to be imaged within the same telescope field or do not enable accurate identification of the measuring field in a view finder.The present invention overcomes this problem by providing a system having a first branch (10, 12) and a second branch (14) which receive light from a sample and reference target respectively. A shutter 22 sequentially allows light from the two branches to pass to a mirror 20 having a slit 30, reflective portions 32 and transparent portions 34. Light from the first branch passes through portions 30 and 34 to a detecting branch (42, 46, 50-56) and some light is reflected through a lens 16 to eye piece 19. Similarly some light from the second branch passes through mirror 30 and 34 to eye piece 19 and some light is reflected to the detecting branch. Accordingly the measuring field can be accurately identified by looking through the eye piece 19 while at the same time light is directed to the detecting branch for analysis.
摘要翻译： 本发明涉及能在现场容易使用的光学系统。 已知的系统要么将样本和参考目标在相同的望远镜视野内进行成像，要么不能准确地识别取景器中的测量场。 本发明通过提供一种具有分别从样本和参考目标接收光的第一分支（10,12）和第二分支（14）的系统来克服这个问题。 快门22顺序地允许来自两个分支的光通过具有狭缝30的反射镜20，反射部分32和透明部分34.来自第一分支的光通过部分30和34到达检测分支（42,46,50 -56），并且一些光通过透镜16反射到眼片19.类似地，来自第二分支的一些光通过反射镜30和34到眼片19，并且一些光被反射到检测分支。 因此，通过观察眼睛片19可以准确地识别测量场，同时将光指向检测支路进行分析。
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公开(公告)号：US4145161A
公开(公告)日：1979-03-20
申请号：US823292
申请日：1977-08-10
申请人： David R. Skinner
发明人： David R. Skinner
CPC分类号： H02P23/14 , E21B43/127 , F04B49/065 , F04B2203/0208 , F04B2203/0209
摘要： This is a method and apparatus for controlling an oil-well beam pumping unit in a manner which allows increased oil production. The AC electric motor of the beam pumping unit is supplied power through a variable frequency power supply, whose frequency (and voltage) is controlled by circuitry to automatically adjust to whatever flow enters the wellbore by varying the speed of the pumping unit to maintain the speed generally proportional to the real power consumed by the pump. As the level in the wellbore can be maintained at an essentially constant minimum level, despite the relatively large hour-to-hour variations in in-flow which normally occur, the total flow from the formation into the wellbore in a given period of time is increased.
摘要翻译： 这是用于以允许增加的油产生的方式控制油井梁泵送单元的方法和装置。 波束泵送单元的交流电动机通过变频电源供电，其频率（和电压）由电路控制，以通过改变泵送单元的速度来自动调节到任何流入井筒的流量，以保持速度 通常与泵消耗的实际功率成比例。 由于井眼中的水平可以保持在基本恒定的最小水平，尽管通常发生的流量的小时变化相对较大，但在给定时间段内从地层到井筒的总流量是 增加。
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公开(公告)号：US4076457A
公开(公告)日：1978-02-28
申请号：US724037
申请日：1976-09-17
CPC分类号： F04B49/103 , E21B43/129 , E21B47/12 , F04B47/08
摘要： This is a method and apparatus for controlling a downhole, hydraulically actuated pump. Two fluid flow monitoring means generate signals which are a function of the power fluid flow rate to the downhole pump and the return fluid flow rate from the well. An automatic controller causes the power fluid flow rate to be maintained essentially directly proportional to the return flow. Thus, the power fluid flow is not varied in the opposite direction of any change in return flow to maintain the return fluid flow constant, but conversely, is changed in a manner which will tend to accentuate any changes in the return fluid flow.
摘要翻译： 这是用于控制井下液压致动泵的方法和装置。 两个流体流量监测装置产生与井下泵的动力流体流量和来自井的回流流体流量的函数的信号。 自动控制器使功率流体流速基本上保持与回流成正比。 因此，功率流体流不会在返回流量的任何变化的相反方向上变化，以保持回流流体的流动恒定，而相反，以将会强调返回流体流动的任何变化的方式改变。
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公开(公告)号：US4042025A
公开(公告)日：1977-08-16
申请号：US724060
申请日：1976-09-17
CPC分类号： E21B43/12
摘要： This is a method and apparatus for a control system for a well-fluid hydraulic pumping unit. The system senses level in the suction vessel and operates an underflow throttling valve to control both the level in the suction vessel and the flows of the cyclone separator. The system maintains the level in the horizontal suction vessel and simultaneously maintains flows to the cyclone in a range for effective cleaning of the fluid and for self-cleaning of the underflow. The cyclone and its associated hardware are sized based on the above-ground pump flow and any bleed flow from the suction vessel. The system is generally applicable to hydraulic units in which the speed of the above-ground pump is not varied over a wide range.
摘要翻译： 这是用于良好液压泵送单元的控制系统的方法和装置。 该系统感测吸入容器中的水平并操作底流节流阀以控制抽吸容器中的水平和旋风分离器的流动。 该系统保持水平抽吸容器中的水平面并同时保持在旋流器中的流量，以在有效清洁流体和自下而上清洗流体的范围内。 旋风及其相关硬件的尺寸基于地面泵流量和来自抽吸容器的任何流出物。 该系统通常适用于其中地面泵的速度在宽范围内不变化的液压单元。
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