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公开(公告)号：US07938018B2
公开(公告)日：2011-05-10
申请号：US12386798
申请日：2009-04-23
申请人： Alan Roger Harper
发明人： Alan Roger Harper
IPC分类号： G01F1/56
CPC分类号： G01F1/28 , G01P13/002 , H01H35/405
摘要： A liquid flow sensing system for sensing the flow of liquid within a supply line (2) of a metering pumping machine, the system including a magnetic member (4) arranged for movement relative to a pneumatic switch (8) operated by the presence or absence of a magnetic field, the magnetic member (4) being contained within a sealed unit (5) located within the supply line (2) and the arrangement being such that, when the liquid flow rate falls below a predetermined level, the magnetic member (4) moves downwardly from a first operative position into a second operative position.
摘要翻译： 一种用于感测计量泵送机器的供应管线（2）内的液体流动的液体流量检测系统，该系统包括一个磁性构件（4），该磁性构件布置成相对于由存在或不存在操作的气动开关（8）运动 磁性构件（4）被包含在位于供给管线（2）内的密封单元（5）内，并且所述布置使得当液体流速低于预定水平时，磁性构件 4）从第一操作位置向下移动到第二操作位置。
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公开(公告)号：US07105757B2
公开(公告)日：2006-09-12
申请号：US11316309
申请日：2005-12-21
申请人： Guido Valentini
发明人： Guido Valentini
IPC分类号： H01H35/40
CPC分类号： B24B23/026 , B24B55/10 , H01H35/405
摘要： A magnetic flow switch (1) is described that includes a body (2) defining a chamber (20) destined to have a fluid flow pass through it, an excitation magnet (4) placed in a shuttle (3) mounted such that it can slide within the chamber (20) of the body to pass from an initial front position to a final rear position, a Reed switch (6) arranged on the body (2) of the flow switch to detect the magnetic field generated by the displacement of the excitation magnet (4) and to accordingly send a control signal to an electronic control board, and at least one attraction magnet (7) arranged on the body (2) of the flow switch, in a position such as to generate an attraction magnetic field able to attract the excitation magnet (4) to make the shuttle (3) move to the initial front position.
摘要翻译： 描述了一种磁流量开关（1），其包括限定要流过其中的流体流的腔室（20）的主体（2），放置在穿梭件（3）中的激励磁体（4），其安装成使得其可 在主体的腔室（20）内滑动以从初始前部位置传递到最终后部位置;布置在流量开关的主体（2）上的簧片开关（6），用于检测由流体开关的位移产生的磁场 激励磁体（4），并且相应地将控制信号发送到电子控制板，以及布置在流量开关的主体（2）上的至少一个吸引磁体（7），以产生吸引磁场 能够吸引激励磁体（4）以使梭子（3）移动到初始前部位置。
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公开(公告)号：US06255748B1
公开(公告)日：2001-07-03
申请号：US09101691
申请日：1998-12-01
申请人： Roger Allcorn
发明人： Roger Allcorn
IPC分类号： H01H916
CPC分类号： H01H35/405 , H01H9/167 , Y10T307/74 , Y10T307/826 , Y10T307/865
摘要： A switch status sensor is provided for counting on/off events of a switch of a water meter. When an on/off event is detected by a microcontroller, the microcontroller supplies a “signature” signal, which is distinguishable from electromagnetic noise, to the switch. If this “signature” signal is detected as having passed through the switch by the microcontroller, then it can be confirmed that the switch is closed. Alternatively, if the “signature” signal is not detected as having passed through the switch by the microcontroller, then it is verified that the switch is open. Thus, the switch status sensor can distinguish between false switch events caused by electromagnetic noise and true on/off events of the switch.
摘要翻译： 提供开关状态传感器用于计数水表开关的开/关事件。 当微控制器检测到开/关事件时，微控制器向开关提供与电磁噪声区分开的“签名”信号。 如果该“签名”信号被微控制器检测为已经通过开关，则可以确认开关是闭合的。 或者，如果“签名”信号未被微控制器检测为已经通过开关，则验证开关是开放的。 因此，开关状态传感器可以区分由电磁噪声引起的假开关事件和开关的真实开/关事件。
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公开(公告)号：US5945608A
公开(公告)日：1999-08-31
申请号：US790818
申请日：1997-01-30
申请人： Harold D. Hutchinson
发明人： Harold D. Hutchinson
CPC分类号： G01F1/24 , G01F1/28 , G01P13/0033 , G01P5/04 , H01H35/405
摘要： A fluid flow monitoring system comprised of a permanent magnet mounted on a bendable spring blade that provide an output from a Hall effect transducer as the permanent magnet is deflected toward or away from the transducer. The permanent magnet can be mounted to directly approach the Hall effect transducer or can also be mounted to approach the transducer by a sideways bypass direction. Both the direct motion and sideways bypass direction allows the use of a variety of sizes and shapes of magnets that allow the magnetic field intensity to be modified in any way desired. Various magnet shapes such as cylinders, rectangles, pyramids, triangles or compound magnets from these shapes may be used. The output signal of the transducer is processed through a smoothing filter and circuits that produce a linear output or a stepped digital output. The system preferably uses a resistance/capacitance filter to provide a different time constant for an increasing flow or a decreasing flow. The output can be used as a flow switching circuit or as a flow meter, or as a flow quantity totalizer.
摘要翻译： 一种流体流量监测系统，包括安装在可弯曲弹簧片上的永磁体，当永磁体朝向或远离换能器偏转时，该永磁体提供来自霍尔效应传感器的输出。 永磁体可以安装成直接接近霍尔效应传感器，也可以安装成通过侧向旁路方向接近传感器。 直接运动和侧向旁路方向允许使用各种尺寸和形状的磁体，其允许以任何所需的方式修改磁场强度。 可以使用各种磁体形状，例如圆柱体，矩形，金字塔形，三角形或来自这些形状的复合磁体。 传感器的输出信号通过平滑滤波器和产生线性输出或阶梯式数字输出的电路进行处理。 该系统优选地使用电阻/电容滤波器来提供不同的时间常数以增加流量或减小流量。 该输出可用作流量切换电路或流量计，或用作流量积分器。
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公开(公告)号：US5183983A
公开(公告)日：1993-02-02
申请号：US855213
申请日：1992-03-20
申请人： David G. Knop
发明人： David G. Knop
CPC分类号： H01H35/405 , H01H11/0012
摘要： A basic housing for a fluid flow monitoring assembly comprising a sensing leakproof elongate hollow body formed from a non-magnetic, metallic material and pivotally mounting internally of same a vane assembly that at one end includes a vane adapted to be inserted into a fluid flow of piping, with the vane assembly being spring biased to pivot oppositely of the direction of fluid flow, about its pivot mounting, for zero or reduced fluid flow conditions, and at its other end including a permanent magnet for electrically actuating a switch mechanism; such elongate sensing body defines an open end through which the vane projects and closed a end adjacent the magnet, which elongate body adjustably mounts crosswise thereof at its closed end within the permeability of the magnet for set point adjustment purposes a novel flow switch assembly comprising a plastic housing that is also leakproof and potably mounts in hermetically sealed relation a commercially available reed type off-on switch in electrical circuit arrangement with lead wires having ends that extend from one end of such flow switch assembly, for connection in optional electrical circuiting of a variety of types, which flow switch assembly is in field adjustable and can be set so the reed switch is Normally Open or Normally Closed, with the switch assembly housing including both indicia and flanging for setting the same precisely at such Normally Open or Normally Closed positions; the switch assembly is also arranged for full removal from the unit basic housing for inspection or replacement without the need to shut down the equipment to which the monitor assembly is applied.
摘要翻译： 一种用于流体流动监测组件的基本壳体，包括由非磁性金属材料形成的传感防漏细长型中空体，并在其内部可枢转地安装相同的叶片组件，所述叶片组件的一端包括适于插入到 管道，其中叶片组件被弹簧偏置以绕流体流动方向相对于流体流动方向枢转枢转安装，用于零或减少的流体流动条件，并且在其另一端包括用于电动致动开关机构的永磁体; 这种细长感测体限定开放端，叶片通过该端部突出并闭合与磁体相邻的端部，该细长体在其闭合端处可调节地安装在磁体的磁导率内，用于设定点调整目的，该新型流量开关组件包括： 塑料外壳也是防漏的，并且以气密密封的方式安装在具有电线的布置中的商业上可获得的簧片型开关开关，导线具有从这种流量开关组件的一端延伸的端部，用于在可选的电路中连接 各种类型的流量开关组件在现场可调节，并且可以设置为使簧片开关为常开或常闭，开关组件外壳包括标记和凸缘，用于在正常打开或常闭位置精确设置 ; 开关组件还布置成用于从单元基本壳体完全移除以进行检查或更换，而不需要关闭施加监视器组件的设备。
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公开(公告)号：US5019678A
公开(公告)日：1991-05-28
申请号：US404891
申请日：1989-09-08
IPC分类号： H01H35/40
CPC分类号： H01H35/405
摘要： A flow switch includes a movable shuttle enclosed within a bore having narrower and wider bore sections. The shuttle has a solid cylindrical portion and a vaned portion. When there is no fluid flow from the inlet to the outlet, the shuttle rests on a part-conical portion of the bore. When fluid pressure is applied at the inlet, the shuttle is raised until the vaned portion is partly within the wider bore section. Fluid can then flow through the spaces between the vanes in the vaned portion, and fluid flow is detected by the change in position of the shuttle. The shuttle can be made magnetic, whereupon a magnetic sensing means such as a magnetic reed switch can be used to detect fluid flow. This arrangement has the advantage that resistance to flow and pressure drop are minimal compared to previous designs.
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公开(公告)号：US4739135A
公开(公告)日：1988-04-19
申请号：US45979
申请日：1987-05-04
申请人： Craig S. Custer
发明人： Craig S. Custer
IPC分类号： H01H35/40
CPC分类号： H01H35/405
摘要： Disclosed is a non-position sensitive, non-memory condition sensitive, automatic reset flow sensor having a solid housing having an inlet port and an outlet port connected by an axial bore through the center of the sensor housing. An armature is free to move axially within the bore within a range of motion defined by two pairs of detents, the detents extending radially toward the center axis of the bore. The magnetic axis of the compensating magnet is such as to normally oppose the magnetic axis of the armature and, thereby, to apply a magnetic repulsion against the armature to bias the armature toward the inlet port of the sensor housing. The force of magnetic repulsion between the compensating magnet and the armature is, at all times, greater than the force of gravity to, thusly insure that the repulsive force of the compensating magnet will be capable of returning the armature to its original position proximal to the inlet port detents, after the flow condition causing movement of the armature toward the outlet port detents has abated.
摘要翻译： 公开了一种非位置敏感的非存储器状态敏感的自动复位流量传感器，其具有实心壳体，其具有通过穿过传感器壳体的中心的轴向孔连接的入口端口和出口端口。 衔铁在由两对棘爪限定的运动范围内在孔内自由移动，制动器径向延伸到孔的中心轴线。 补偿磁体的磁轴通常与电枢的磁轴相对，从而对电枢施加磁性斥力，使电枢朝向传感器外壳的入口偏置。 在补偿磁体和电枢之间的磁力排斥力总是大于重力，从而确保补偿磁体的排斥力将能够将电枢返回到其原始位置 在导致电枢朝向出口端口移动的流动状态之后，入口端口卡扣已经减少。
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公开(公告)号：US4691185A
公开(公告)日：1987-09-01
申请号：US681562
申请日：1984-12-14
CPC分类号： H01H35/405 , G01F1/24 , G01P13/002 , H03K17/9517 , H03K17/97 , H01H36/00
摘要： Fluid flow indicator is provided in which a fluid pressure to position transducer moves a permanent magnet from a no-flow position to a flow position in response to fluid pressure. The change in the position in the permanent magnet changes the intensity and polarity of the magnetic field that the permanent magnet places upon a Hall effect semiconductor; so that a switching function results as a function of fluid pressure differential causing no-flow and flow conditions. The change in magnitude and polarity of the magnetic field between first and second distances from one surface of the permanent magnet is increased by providing an opening through the permanent magnet and by providing a magnetic device near the opposite surface of the magnet.
摘要翻译： 提供流体流量指示器，其中位置传感器的流体压力响应于流体压力将永磁体从无流动位置移动到流动位置。 永久磁铁位置的变化会改变永磁体位于霍尔效应半导体上的磁场的强度和极性; 使得切换功能作为导致无流量和流动条件的流体压力差的函数。 通过提供通过永磁体的开口并且通过在磁体的相对表面附近提供磁性装置来增加从永磁体的一个表面开始的第一和第二距离之间的磁场的大小和极性的变化。
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公开(公告)号：US4500759A
公开(公告)日：1985-02-19
申请号：US536694
申请日：1983-09-28
IPC分类号： H01H35/40
CPC分类号： H01H35/405
摘要： A flow switch is disclosed comprising a body member having a fluid inlet and a fluid outlet defined therein. An outer core tube is disposed within the body member and has a first and a second end. An inner core tube is disposed coaxial to and within the outer core tube and has a first and a second end with the first ends of the inner and outer core tubes being disposed adjacent the fluid inlet. One of the inner and outer core tubes being in fluid communication with the fluid inlet. The body member defines a body flow path between the outer core tube and the body member and in fluid communication with the fluid outlet. A first aperture is defined by the inner core tube and a second aperture is defined by the outer core tube. Securing means secures one of the core tubes to be non-rotatable relative to the body member. The other of the core tubes is rotatable relative to the body member enabling the first aperture to register with the second aperture for defining a first orifice of variable size to provide a variable flow path from the fluid inlet to the body flow path and to the fluid outlet in accordance with the relative rotational position between the inner and outer core tubes. A cylindrical chamber is defined by the rotatable core tube. A piston is slidably disposed in the cylindrical chamber for movement in accordance with the fluid flow through the fluid inlet. A switch is disposed proximate the piston for providing a switching output in response to the fluid flow through the fluid inlet exceeding a preselected level.
摘要翻译： 公开了一种流量开关，其包括具有限定在其中的流体入口和流体出口的本体构件。 外芯管设置在主体构件内并且具有第一端和第二端。 内芯管同轴设置在外芯管内并具有第一和第二端，内芯管和外芯管的第一端邻近流体入口设置。 内芯管和外芯管中的一个与流体入口流体连通。 主体构件限定了在外芯管和主体构件之间并与流体出口流体连通的主体流动路径。 第一孔由内芯管限定，第二孔由外芯管限定。 固定装置将芯管中的一个固定成相对于主体构件是不可旋转的。 核心管中的另一个可相对于本体构件旋转，使得第一孔能够与第二孔对准，用于限定可变尺寸的第一孔，以提供从流体入口到身体流动路径和流体的可变流动路径 根据内芯管和外芯管之间的相对旋转位置排出。 圆筒形腔由可旋转的芯管限定。 活塞可滑动地设置在圆柱形腔室中，用于根据通过流体入口的流体流动而移动。 开关设置在活塞附近，以响应于流过流体入口的流体超过预选的水平来提供开关输出。
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公开(公告)号：US4282413A
公开(公告)日：1981-08-04
申请号：US54299
申请日：1979-07-02
申请人： John R. Simons , John W. Fenske
发明人： John R. Simons , John W. Fenske
IPC分类号： H01H35/40
CPC分类号： H01H35/405
摘要： A liquid flow indicator for use in an automatic sprinkler system. The indicator is adapted to be attached to a water line and includes a non-metallic vane retainer or support which is mounted within an opening in the water line. A flexible one-piece plastic vane is pivoted to the retainer and has a generally circular body portion which is disposed transversely within the pipe. If the water line is opened downstream of the indicator, the flow of water within the line will pivot the vane, causing a magnet in the upper end of the vane to move into proximity with a sensor to complete an electrical circuit and generate a signal indicating that the water line has been opened. The retainer is formed with a pair of aligned recesses which are sealed apart by a central wall and the upper head of the vane which contains the magnet, is located in one recess, while the sensor is in the other recess.
摘要翻译： 用于自动喷水灭火系统的液体流量指示器。 指示器适于附接到水线，并且包括安装在水线中的开口内的非金属叶片保持器或支撑件。 柔性单件塑料叶片枢转到保持器，并且具有横向设置在管内的大致圆形的主体部分。 如果水线在指示器的下游打开，则管线内的水流将使叶片枢转，导致叶片上端的磁铁移动到传感器附近以完成电路并产生一个信号 水线已经打开了。 保持器形成有一对对准的凹部，它们被中心壁密封并且包含磁体的叶片的上部头部位于一个凹部中，同时传感器位于另一凹部中。
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