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公开(公告)号：US4680511A
公开(公告)日：1987-07-14
申请号：US845689
申请日：1986-03-28
CPC分类号： H04N5/63 , H02M3/33523 , H02M2001/0032 , Y02B70/16
摘要： An input signal for controlling a television power supply has "power-on" and "power-off" signal states. When the input signal is in the "power-on" state, it couples a clock signal to a primary winding of a transformer causing an alternating current voltage that is conductively isolated from the input signal to be developed across a secondary winding of the transformer. When the input signal is in the "power-off" state, it decouples the clock signal from the primary winding so that no alternating current voltage is developed across the secondary winding. The signal across the secondary winding is demodulated in a demodulator that produces a control signal that is conductively isolated from the input signal. The control signal is coupled to a regulator of the power supply. A power-on state of the control signal occurs when the alternating current voltage is developed at the secondary winding terminal. A power-off state of the control signal occurs when the alternating current voltage is absent.
摘要翻译： 用于控制电视电源的输入信号具有“上电”和“断电”信号状态。 当输入信号处于“上电”状态时，它将时钟信号耦合到变压器的初级绕组，导致与输入信号导电隔离的交流电压，以跨变压器的次级绕组开发。 当输入信号处于“断电”状态时，它会将时钟信号与初级绕组分离，从而在次级绕组之间不产生交流电压。 次级绕组中的信号在解调器中被解调，该解调器产生与输入信号导电隔离的控制信号。 控制信号耦合到电源的调节器。 当在次级绕组端子处产生交流电压时，发生控制信号的通电状态。 当不存在交流电压时，发生控制信号的断电状态。
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公开(公告)号：US06851658B2
公开(公告)日：2005-02-08
申请号：US10358050
申请日：2003-02-04
CPC分类号： F16K47/08 , F16K3/243 , Y10T137/86734 , Y10T137/86759
摘要： An ANSI Leakage Class V control valve having consistent shut off characteristics with a reduced actuator force required to open and close the valve is provided. The trim arrangement of the control valve includes a valve cage having a multi-contoured inner surface. The multi-contoured inner surface can include a plurality of surfaces. The multi-contoured surface can include first, second, and third perimeter surfaces, and a first transition surface disposed between and coupling the first and second perimeter surfaces, and a second transition surface disposed between and coupling the second and third perimeter surfaces. The valve also includes a valve plug disposed at one end of a valve stem. The valve plug controls the fluid flow through the valve. The valve plug includes an opening through the plug for equalizing pressure across the valve plug. An annular channel is formed within a wall of the valve plug and is sized to accommodate a sealing ring. The sealing ring engages the second perimeter surface to form a fluid seal that substantially hinders fluid leakage through the valve.
摘要翻译： 提供具有一致的切断特性并具有打开和关闭阀所需的致动器力减小的ANSI泄漏等级V控制阀。 控制阀的调整装置包括具有多轮廓内表面的阀笼。 多轮廓内表面可以包括多个表面。 多轮廓表面可以包括第一，第二和第三周边表面以及设置在第一和第二周边表面之间并且联接第一和第二周边表面的第一过渡表面以及设置在第二和第三周边表面之间并且联接第二和第三周边表面的第二过渡表面。 阀还包括设置在阀杆一端的阀塞。 阀塞控制通过阀门的流体流量。 阀塞包括通过塞子的开口，用于均衡阀塞两端的压力。 环形通道形成在阀塞的壁内，其尺寸适于容纳密封环。 密封环与第二周边表面接合以形成流体密封，其基本上阻碍流体通过阀的泄漏。
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公开(公告)号：US5197328A
公开(公告)日：1993-03-30
申请号：US818289
申请日：1992-01-09
IPC分类号： F16K37/00
CPC分类号： F16K37/0083 , F16K37/0091 , Y10T137/7761
摘要： Apparatus and method for diagnostically testing and determining the operating condition of a pneumatically operated valve. A diagnostic controller is connected to a valve actuator assembly so that diaphragm pressure and valve plug movement among other inputs can be sensed while the valve actuator assembly is stroked through a test operation cycle. The sensor output signals are then used in selected graphical plots to provide information which can be analyzed to indicate the condition of the valve in such areas as spring adjustment, stroking time, valve travel, stem friction, seat load, and positioner and transducer calibration.
摘要翻译： 用于诊断测试和确定气动阀操作状态的装置和方法。 诊断控制器连接到阀致动器组件，使得在阀致动器组件通过测试操作循环被抚摸时，可以感测到在其他输入之间的隔膜压力和阀塞移动。 然后，传感器输出信号在选定的图形图中使用，以提供可分析的信息，以指示阀门在弹簧调节，冲程时间，阀门行程，阀杆摩擦，阀座负载以及定位器和换能器校准等方面的状况。
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公开(公告)号：US5109692A
公开(公告)日：1992-05-05
申请号：US605130
申请日：1990-10-24
IPC分类号： F16K37/00
CPC分类号： F16K37/0083 , F16K37/0091 , Y10T137/7761
摘要： A method for diagnostically dynamic testing and determining the dynamic operating condition of a pneumatically operated fluid control valve assembly wherein a dynamic output of the valve assembly is compared in response to a dynamic input to the valve assembly. A controlled variable pneumatic pressure is supplied to the input of the valve positioner forming the dynamic input to move the flow control member. The controlled varying pressure is sensed to provide a first signal representing the dynamic input. The movement of the flow control member is sensed to obtain a second signal representing the responsive dynamic output, and the first and second signal are processed to develop valve diagnostic data, which is displayed to enable determination of the dynamic performance of the valve assembly under test.
摘要翻译： 一种用于诊断动态测试和确定气动操作的流体控制阀组件的动态操作条件的方法，其中响应于阀组件的动态输入来比较阀组件的动态输出。 将可控气动压力供给到形成动态输入的阀定位器的输入端以移动流量控制构件。 感测受控变化的压力以提供表示动态输入的第一信号。 感测流量控制构件的移动以获得表示响应动态输出的第二信号，并且处理第一和第二信号以开发阀诊断数据，其被显示以能够确定正在测试的阀组件的动态性能 。
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公开(公告)号：US07373951B2
公开(公告)日：2008-05-20
申请号：US10935067
申请日：2004-09-07
IPC分类号： F16K11/07
CPC分类号： F16K47/08 , Y10T137/86759 , Y10T137/86791 , Y10T137/86807
摘要： A control valve having a shiftable valve plug includes a valve body having an inlet, an outlet, a flow passage extending between the inlet and the outlet, and defining a longitudinal axis, a generally cylindrical valve cage disposed within the valve body and sized to receive the valve plug, with the valve cage including at least one aperture comprising at least a portion of the flow passage, a portion of the valve cage disposed adjacent a portion of the valve body at an interface. A seal having a C-shaped cross section is provided and is disposed at the interface between the valve cage and the valve body, and a retainer is disposed adjacent the interface and positioned to secure the seal against movement along the longitudinal axis.
摘要翻译： 具有可移动阀塞的控制阀包括具有入口，出口，在入口和出口之间延伸并限定纵向轴线的流动通道的阀体，大致圆柱形的阀笼，其设置在阀体内并且尺寸适于接纳 所述阀塞具有包括至少一个包括所述流动通道的至少一部分的孔的所述阀笼，所述阀笼的一部分在所述阀体的一个界面处邻近所述阀体的一部分设置。 提供具有C形横截面的密封件，并且设置在阀笼和阀体之间的界面处，并且保持器设置在邻近界面处并且定位成固定密封件以防止沿着纵向轴线移动。
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6.发明授权Power supply stabilization circuit with separate AC/DC negative feedback paths 失效电源稳定电路具有单独的AC / DC负反馈路径
公开(公告)号：US5463290A
公开(公告)日：1995-10-31
申请号：US236065
申请日：1994-05-02
CPC分类号： H04N5/63
摘要： A charge storage capacitor is coupled to an ultor electrode of a cathode ray tube for supplying a beam current when video loading variations occur. A relatively small resistor coupled in series with the capacitor develops an AC feedback signal that is indicative of beam current variations. The AC feedback signal developed in the resistor is coupled to a control input of a high voltage regulator in a negative feedback manner to compensate for the beam current variations. An ultor voltage is developed across a voltage divider. A DC feedback signal is coupled from a terminal of the voltage divider to the control input of the regulator. The DC feedback signal is low-pass filtered via a first low-pass filter. The AC feedback signal is low-pass filtered via a separate low-pass filter that provides less extensive low pass filtering than the first low-pass filter.
摘要翻译： 电荷存储电容器耦合到阴极射线管的阳极电极，用于当出现视频加载变化时提供束电流。 与电容器串联耦合的相对较小的电阻产生指示电流电流变化的AC反馈信号。 在电阻器中产生的AC反馈信号以负反馈方式耦合到高压稳压器的控制输入，以补偿电流的电流变化。 跨越分压器开发了阳极电压。 DC反馈信号从分压器的端子耦合到调节器的控制输入端。 DC反馈信号通过第一低通滤波器进行低通滤波。 AC反馈信号通过单独的低通滤波器进行低通滤波，该滤波器比第一个低通滤波器提供不太广泛的低通滤波。
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7.发明授权
公开(公告)号：US4525739A
公开(公告)日：1985-06-25
申请号：US480514
申请日：1983-03-30
CPC分类号： H02M3/33507
摘要： The raster scanned by a television receiver deflection circuit is subject to an increase in size resulting from a decrease in high voltage level caused by increasing electron beam current. The receiver comprises a switched mode power supply producing a voltage supply that is used to power the deflection circuit and generate the high voltage. The voltage supply level incorporates an ac ripple component caused by loading on the supply due to increasing beam current. A peak detector senses the peak level of the voltage supply and applies it to a regulator control circuit which maintains the peak level of the supply voltage constant. Increasing beam current loads the supply, decreasing the average dc voltage level applied to the deflection circuit, thereby decreasing the electron beam scan to compensate for a reduction in high voltage level.
摘要翻译： 由电视接收机偏转电路扫描的光栅受到由增加的电子束电流引起的高电压电平降低的影响而增加。 接收器包括开关模式电源，产生用于对偏转电路供电并产生高电压的电压源。 电压电平包含由于电流增加而导致的电源负载引起的交流纹波分量。 峰值检测器检测电压源的峰值电平，并将其施加到保持电源电压峰值电平恒定的稳压器控制电路。 增加光束电流加载电源，降低施加到偏转电路的平均直流电压电平，从而减少电子束扫描以补偿高电压电平的降低。
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公开(公告)号：US08720854B2
公开(公告)日：2014-05-13
申请号：US12771950
申请日：2010-04-30
IPC分类号： F16K25/00
CPC分类号： F16K5/0668 , F16K5/205
摘要： A seal assembly is provided for a rotary ball valve having a top-mounted bonnet, thereby allowing the seal assembly to be installed and removed without removing the valve from the pipeline. In an embodiment, the seal assembly may include a seal ring disposed within the valve interior and biased toward the ball element of the valve. A seal carrier may be disposed between the seal ring and the valve body, and the seal carrier may be removably secured to the valve body by a plurality of bolts disposed in the valve interior. A primary leak path may exists between the seal ring and the seal carrier and a secondary leak path may exists between the seal carrier and the valve body. A first and second auxiliary seal may prevent fluid flow through the primary and secondary leak path, respectively.
摘要翻译： 为具有顶部安装的发动机罩的旋转球阀提供密封组件，从而允许密封组件被安装和移除，而不从管道移除阀门。 在一个实施例中，密封组件可以包括设置在阀内部并被朝向阀的球元件偏压的密封环。 密封载体可以设置在密封环和阀体之间，并且密封载体可以通过设置在阀内部的多个螺栓可移除地固定到阀体。 在密封环和密封载体之间可能存在主泄漏路径，并且在密封载体和阀体之间可能存在二次泄漏路径。 第一和第二辅助密封件可以分别防止流体流过主要和次要泄漏路径。
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公开(公告)号：US20100044613A1
公开(公告)日：2010-02-25
申请号：US12607674
申请日：2009-10-28
申请人： James L. Gossett , William V. Fitzgerald , Raymond W. Micheel , Donald Sanders , Donald R. Bush , Wade J. Helfer
发明人： James L. Gossett , William V. Fitzgerald , Raymond W. Micheel , Donald Sanders , Donald R. Bush , Wade J. Helfer
IPC分类号： F16K27/08
CPC分类号： F16K47/08 , Y10T137/86759 , Y10T137/86791 , Y10T137/86807
摘要： A control valve having a shiftable valve plug includes a valve body having an inlet, an outlet, a flow passage extending between the inlet and the outlet, and defining a longitudinal axis, a generally cylindrical valve cage disposed within the valve body and sized to receive the valve plug, with the valve cage including at least one aperture comprising at least a portion of the flow passage, a portion of the valve cage disposed adjacent a portion of the valve body at an interface. A seal having a C-shaped cross section is provided and is disposed at the interface between the valve cage and the valve body, and a retainer is disposed adjacent the interface and positioned to secure the seal against movement along the longitudinal axis.
摘要翻译： 具有可移动阀塞的控制阀包括具有入口，出口，在入口和出口之间延伸并限定纵向轴线的流动通道的阀体，大致圆柱形的阀笼，其设置在阀体内并且尺寸适于接纳 所述阀塞具有包括至少一个包括所述流动通道的至少一部分的孔的所述阀笼，所述阀笼的一部分在所述阀体的一个界面处邻近所述阀体的一部分设置。 提供具有C形横截面的密封件，并且设置在阀笼和阀体之间的界面处，并且保持器设置在邻近界面处并且定位成固定密封件以防止沿着纵向轴线移动。
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10.发明授权Regulated power supply incorporating a power transformer having a tightly coupled supplemental power transfer winding 失效具有电源变压器的调节电源具有紧耦合的补充功率传输绕组
公开(公告)号：US4466051A
公开(公告)日：1984-08-14
申请号：US436757
申请日：1982-10-25
IPC分类号： H02M3/335
CPC分类号： H02M3/33523
摘要： A regulated power supply for a television receiver includes a transformer having a primary winding coupled to a source of unregulated voltage. A transistor switch controls the interval during which the unregulated voltage causes current to flow in the primary winding. By transformer action, power is transferred to secondary windings which are coupled to receiver load circuits. The secondary winding voltages are regulated by control of the primary winding conduction interval. A supplemental winding is layer wound over the primary winding to transfer additional power to the load circuits. The primary winding may be electrically isolated from the secondary windings and from the supplemental winding.
摘要翻译： 用于电视接收机的稳压电源包括具有耦合到未调节电压源的初级绕组的变压器。 晶体管开关控制不平衡电压使电流在初级绕组中流动的间隔。 通过变压器动作，功率被传送到耦合到接收器负载电路的次级绕组。 次级绕组电压通过初级绕组导通间隔的控制来调节。 辅助绕组是在初级绕组上缠绕的层，以将额外的功率传递到负载电路。 初级绕组可以与次级绕组和辅助绕组电隔离。
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