公开(公告)号：US5072416A

公开(公告)日：1991-12-10

申请号：US497729

申请日：1990-03-19

申请人： Edward E. Francisco, Jr. ,  Gary D. Cohrs ,  Samuel H. Smith

发明人： Edward E. Francisco, Jr. ,  Gary D. Cohrs ,  Samuel H. Smith

IPC分类号： G01F25/00

CPC分类号： G01F25/0007 ,  G01F25/0015 ,  G01F25/003

摘要： A double cycle prover is used to calibrate meters which require long proving runs. A small volume or piston prover and a master flowmeter, are coupled in series with the meter under test, then the master flowmeter is calibrated against the small volume prover, and the meter under test is calibrated against the master flowmeter. A signal processor combines the proving cycles, to relate the small volume prover to the meter under test. A density meter is connected to the flow channel, if the meter under test is a mass flowmeter, and the signal processor uses the density measurement to relate the mass flow measurement of the meter under test with the volume flow measurement of the master flowmeter.

摘要翻译： 使用双周期证明器来校准需要长时间证明运行的仪表。 小容量或活塞式检测器和主流量计与被测仪表串联，然后根据小体积证明器校准主流量计，并根据主流量计对被测量表进行校准。 信号处理器结合了证明周期，将小体积证明者与被测仪表相关联。 如果被测仪表是质量流量计，则密度计连接到流量通道，信号处理器使用密度测量将被测仪表的质量流量测量与主流量计的体积流量测量值相关联。

公开(公告)号：US4996869A

公开(公告)日：1991-03-05

申请号：US271090

申请日：1988-11-14

申请人： Gary D. Cohrs ,  Samuel H. Smith ,  Edward E. Francisco, Jr.

发明人： Gary D. Cohrs ,  Samuel H. Smith ,  Edward E. Francisco, Jr.

IPC分类号： G01F25/00

CPC分类号： G01F25/0015

摘要： A moveable fluid barrier (16) is driven from an upstream position to a downstream position through a measuring cylinder (18) connected fluidically in series with the flowmeter (22) under test to induce fluid flow therethrough at a flow rate related to the movement of the barrier. The response of the flowmeter is sensed during a plurality of time intervals as the barrier is driven through the conduit from the upstream position toward the downstream position in the course of a test run. The movement of the fluid barrier is also sensed (28) during these intervals. From the flowmeter response and the fluid barrier movement, a K-factor sample is determined for each interval. The K-factor samples are compared (12) with each other to selected a valid K-factor data point for the particular test run. Specifically, the criterion for determining a valid K-factor data point is the variation between K-factor samples under comparison.

摘要翻译： 可移动流体屏障（16）从上游位置驱动到下游位置，通过与待测流量计（22）流体连接的量筒（18），以便以与流体流动相关的流速 屏障。 在测试运行过程中当屏障通过导管从上游位置向下游位置被驱动时，在多个时间间隔内检测流量计的响应。 在这些间隔期间也感测到流体屏障的移动（28）。 根据流量计响应和流体阻挡运动，每个间隔确定一个K因子样本。 将K因子样本彼此进行比较（12）以为特定测试运行选择有效的K因子数据点。 具体地说，用于确定有效K因子数据点的标准是比较K因子样本之间的变化。

公开(公告)号：US4794785A

公开(公告)日：1989-01-03

申请号：US898763

申请日：1986-08-14

申请人： Gary D. Cohrs ,  Ronald J. Jackson ,  Edward E. Francisco, Jr.

发明人： Gary D. Cohrs ,  Ronald J. Jackson ,  Edward E. Francisco, Jr.

IPC分类号： G01F25/00

CPC分类号： G01F25/0015

摘要： A fluid displacement measuring cylinder has near its ends, respectively, an inlet and an outlet. A fluid displacement measuring piston is adapted to travel through the measuring cylinder as a fluid barrier. A control piston having first and second sides is adapted to travel through the control cylinder as a fluid barrier. A rod connects the control piston only to the side of the measuring piston facing toward one end of the measuring cylinder. A gas pressurized plenum chamber is connected to the control cylinder so the force of the gas pressure urges the measuring piston toward the other end of the measuring cylinder. The movement of the measuring piston through the measuring cylinder is sensed and the movement of the control piston through the control cylinder is fluidically controlled. The pressure in the plenum chamber, which has a substantially larger volume than the control cylinder, is selected so as to cancel the force imbalance caused by the rod.

摘要翻译： 流体位移量筒分别具有一个入口和一个出口。 流体位移测量活塞适于作为流体屏障穿过量筒。 具有第一和第二侧面的控制活塞适于作为流体屏障行进通过控制圆筒。 一个杆将控制活塞仅连接到测量活塞侧面朝向量筒的一端。 气体加压的增压室连接到控制气缸，因此气体压力迫使测量活塞朝向量筒的另一端。 检测测量活塞通过量筒的移动，并且控制活塞通过控制圆筒的移动被流体控制。 选择具有比控制气缸大的体积的增压室中的压力，以便消除由杆产生的力不平衡。

公开(公告)号：US4674317A

公开(公告)日：1987-06-23

申请号：US843001

申请日：1986-03-24

申请人： Gary D. Cohrs ,  Edward E. Francisco, Jr.

发明人： Gary D. Cohrs ,  Edward E. Francisco, Jr.

IPC分类号： G01F25/00

CPC分类号： G01F25/0015 ,  A61M2205/3306 ,  A61M2205/3379 ,  A61M2205/3389

摘要： A mechanical displacement flowmeter calibrator has a first fluid line external of the measuring cylinder of the calibrator connected between the inlet and outlet thereof. A flow meter that produces flow-representative pulses is connected in the fluid line. A rod is connected to a measuring piston adapted to travel through the measuring cylinder as a fluid barrier. The rod drives the measuring piston through the measuring cylinder at a predetermined, constant speed and thereby determines the flow rate of the calibration. The displacement of the measuring piston is sensed as it travels through the measuring cylinder during a test run, while the pulses produced by the flowmeter are counted during the time interval in which the piston displaces a given volume. The flowmeter is preferably connected in the fluid line at the pressure null point. First and second annular edge seals around the periphery of the measuring piston form an annular cavity into which pressurized fluid, preferably a lubricant, is injected. Before a test run, fluid flow in a second fluid line, external of the measuring cylinder, is induced, thereby establishing a closed loop around the first and second fluid lines and the measuring cylinder. To initiate a test run, fluid flow through the second fluid line is blocked to operate the measuring piston. Simultaneously therewith, the measuring piston is driven through the measuring cylinder from end-to-end to execute a test run.

摘要翻译： 机械位移流量计校准器具有连接在其入口和出口之间的校准器的量筒的外部的第一流体管线。 在流体管线中连接产生流动代表脉冲的流量计。 杆连接到适于作为流体屏障行进通过量筒的测量活塞。 杆以预定的恒定速度驱动测量活塞通过量筒，从而确定校准的流量。 测量活塞的位移在测试运行期间通过量筒而被感测，而在活塞移动给定体积的时间间隔期间，由流量计产生的脉冲进行计数。 流量计优选在压力零点处连接在流体管线中。 围绕测量活塞周边的第一和第二环形边缘密封件形成环形空腔，加压流体，优选地是润滑剂被注入到其中。 在测试运行之前，感应在量筒外部的第二流体管线中的流体流动，从而在第一和第二流体管线和量筒周围建立闭合回路。 为了启动测试运行，流过第二流体管线的流体被阻塞以操作测量活塞。 与此同时，测量活塞从端对端被驱动通过量筒，以执行测试运行。

公开(公告)号：US4766759A

公开(公告)日：1988-08-30

申请号：US23658

申请日：1987-03-09

申请人： Gary D. Cohrs ,  Edward E. Francisco, Jr.

发明人： Gary D. Cohrs ,  Edward E. Francisco, Jr.

IPC分类号： G01F25/00

CPC分类号： G01F25/0015

摘要： A mechanical displacement flowmeter calibrator has a first fluid line external of the measuring cylinder of the calibrator connected between the inlet and outlet thereof. A flowmeter that produces flow-representative pulses is connected in the fluid line. A rod is connected to a measuring piston adapted to travel through the measuring cylinder as a fluid barrier. The rod drives the measuring piston through the measuring cylinder at a predetermined, constant speed and thereby determines the flow rate of the calibration. The displacement of the measuring piston is sensed as it travels through the measuring cylinder during a test run, while the pulses produced by the flowmeter are counted during the time interval in which the piston displaces a given volume. The flowmeter is preferably connected in the fluid line at the pressure null point. First and second annular edge seals around the periphery of the measuring piston form an annular cavity into which pressurized fluid, preferably a lubricant, is injected. Before a test run, fluid flow in a second fluid line, external of the measuring cylinder, is induced, thereby establishing a closed loop around the first and second fluid lines and the measuring cylinder. To initiate a test run, fluid flow through the second fluid line is blocked to operate the measuring piston. Simultaneously therewith, the measuring piston is driven through the measuring cylinder from end-to-end to execute a test run.

摘要翻译： 机械位移流量计校准器具有连接在其入口和出口之间的校准器的量筒的外部的第一流体管线。 在流体管线中连接产生流动代表脉冲的流量计。 杆连接到适于作为流体屏障行进通过量筒的测量活塞。 杆以预定的恒定速度驱动测量活塞通过量筒，从而确定校准的流量。 测量活塞的位移在测试运行期间通过量筒而被感测，而在活塞移动给定体积的时间间隔期间，由流量计产生的脉冲进行计数。 流量计优选在压力零点处连接在流体管线中。 围绕测量活塞周边的第一和第二环形边缘密封件形成环形空腔，加压流体，优选地是润滑剂被注入到其中。 在测试运行之前，感应在量筒外部的第二流体管线中的流体流动，从而在第一和第二流体管线和量筒周围建立闭合回路。 为了启动测试运行，流过第二流体管线的流体被阻塞以操作测量活塞。 同时，测量活塞从端对端被驱动通过测量缸，以执行测试运行。

公开(公告)号：US5052211A

公开(公告)日：1991-10-01

申请号：US453142

申请日：1989-12-12

申请人： Gary D. Cohrs ,  Edward E. Francisco, Jr.

发明人： Gary D. Cohrs ,  Edward E. Francisco, Jr.

IPC分类号： G01F25/00

CPC分类号： G01F25/0015

摘要： A fluid flowmeter prover uses a measuring cylinder in series with a flowmeter to calibrate the flow meter. The cylinder has a piston which travels in synchronism with the fluid, the flow rate of which is to be measured. At the downstream end of the cylinder, a poppet valve connected to and within the piston opens to allow the fluid to pass through the piston. The poppet valve has a valve rod connected to a first coupling. A second coupling engages the first coupling and through a motor draws the valve and piston to the upstream end of the cylinder where they disengage, releasing the valve and allowing it to close for another run. The cycle repeats when the second coupling is driven down to reengage the first coupling.

摘要翻译： 流体流量计证明器使用与流量计串联的量筒来校准流量计。 气缸具有与流体同步地行进的活塞，其流量被测量。 在气缸的下游端，连接到活塞内部和内部的提升阀打开以允许流体通过活塞。 提升阀具有连接到第一联接器的阀杆。 第二联接器接合第一联接器并且通过马达将阀和活塞拉到汽缸的上游端，在那里它们脱开，释放阀并允许其关闭用于另一个运行。 当第二耦合被驱动下来以重新接合第一耦合时，循环重复。

公开(公告)号：US5974858A

公开(公告)日：1999-11-02

申请号：US71730

申请日：1998-05-01

申请人： Edward E. Francisco, Jr. ,  Gary D. Cohrs

发明人： Edward E. Francisco, Jr. ,  Gary D. Cohrs

IPC分类号： G01N9/00

CPC分类号： G01N9/002

摘要： A densimeter is provided that is mounted on the side of a conduit carrying a fluid flow. The densimeter consists of an inlet and an outlet scoop which are immersed into the fluid flow through the conduit. A portion of the fluid flow enters into the first scoop and is directed into the densimeter where the fluid's density is measured and then exits through the exit scoop back into the fluid flow in the conduit.

摘要翻译： 提供了一种安装在承载流体流动的导管侧的密度计。 密度计由入口和出口勺组成，浸入通过导管的流体流中。 流体流的一部分进入第一勺并且被引导到测量流体密度的密度计中，然后通过出口勺返回到导管中的流体流中。

公开(公告)号：US4627267A

公开(公告)日：1986-12-09

申请号：US757272

申请日：1985-07-19

申请人： Gary D. Cohrs ,  Edward E. Francisco, Jr.

发明人： Gary D. Cohrs ,  Edward E. Francisco, Jr.

IPC分类号： G01F25/00

CPC分类号： G01F25/0015

摘要： A mechanical displacement flowmeter calibrator has a first fluid line external of the measuring cylinder of the calibrator connected between the inlet and outlet thereof. A flowmeter that produces flow-representative pulses is connected in the fluid line. A rod is connected to a measuring piston adapted to travel through the measuring cylinder as a fluid barrier. The rod drives the measuring piston through the measuring cylinder at a predetermined, constant speed and thereby determines the flow rate of the calibration. The displacement of the measuring piston is sensed as it travels through the measuring cylinder during a test run, while the pulses produced by the flowmeter are counted during the time interval in which the piston displaces a given volume. The flowmeter is preferably connected in the fluid line at the pressure null point. First and second annular edge seals around the periphery of the measuring piston form an annular cavity into which pressurized fluid, preferably a lubricant, is injected. Before a test run, fluid flow in a second fluid line, external of the measuring cylinder, is induced, thereby establishing a closed loop around the first and second fluid lines and the measuring cylinder. To initiate a test run, fluid flow through the second fluid line is blocked to operate the measuring piston. Simultaneously therewith, the measuring piston is driven through the measuring cylinder from end-to-end to execute a test run.

摘要翻译： 机械位移流量计校准器具有连接在其入口和出口之间的校准器的量筒的外部的第一流体管线。 在流体管线中连接产生流动代表脉冲的流量计。 杆连接到适于作为流体屏障行进通过量筒的测量活塞。 杆以预定的恒定速度驱动测量活塞通过量筒，从而确定校准的流量。 测量活塞的位移在测试运行期间通过量筒而被感测，而在活塞移动给定体积的时间间隔期间，由流量计产生的脉冲进行计数。 流量计优选在压力零点处连接在流体管线中。 围绕测量活塞周边的第一和第二环形边缘密封件形成环形空腔，加压流体，优选地是润滑剂被注入到其中。 在测试运行之前，感应在量筒外部的第二流体管线中的流体流动，从而在第一和第二流体管线和量筒周围建立闭合回路。 为了启动测试运行，流过第二流体管线的流体被阻塞以操作测量活塞。 与此同时，测量活塞从端对端被驱动通过量筒，以执行测试运行。

公开(公告)号：US5052212A

公开(公告)日：1991-10-01

申请号：US423842

申请日：1989-10-18

申请人： Gary D. Cohrs

发明人： Gary D. Cohrs

IPC分类号： G01F25/00 ,  G01M3/28

CPC分类号： G01F25/0015 ,  G01M3/2869

摘要： A dynamic leak detector is connected to a fluid flowmeter prover. The prover has a measurement chamber with a fluid inlet and a fluid outlet and a barrier which moves axially through the chamber between the fluid inlet andc the fluid outlet. First and second spaced apart seals between the barrier and the chamber interior prevent fluid from passing through the barrier. The leak detector is connected to the space between the first and second seals and urges fluid to flow out through the seals into the chamber, while the prover is operating. If more than a threshold amount of fluid passes through the seals during a test run, the operator is alerted and the test run is rejected.

摘要翻译： 动态泄漏检测器连接到流体流量计证明器。 证明器具有测量室，其具有流体入口和流体出口以及阻挡件，该阻挡件轴向地移动通过流体入口和流体出口之间的腔室。 阻挡层和室内部之间的第一和第二间隔开的密封件防止流体穿过屏障。 泄漏检测器连接到第一和第二密封件之间的空间，并且在证明器运行时促使流体通过密封件流出到腔室中。 如果在测试运行期间超过阈值量的流体通过密封件，则操作员被警告并且测试运行被拒绝。

公开(公告)号：US4102189A

公开(公告)日：1978-07-25

申请号：US807989

申请日：1977-06-20

申请人： Gary D. Cohrs

发明人： Gary D. Cohrs

IPC分类号： G01F1/115 ,  G01F1/12

CPC分类号： G01F1/125 ,  G01F1/115

摘要： A turbine wheel is mounted for rotation in a cylindrical housing at the end of rod, the housing and rod pass through a sleeve to insert the turbine wheel in a line to intercept fluid flowing therethrough. The rotational position of the rod is controlled as it passes through the sleeve to align the turbine wheel with the direction of flow through the line. A pickoff coil senses the rotation of the turbine wheel. Responsive to the pickoff coil, the sleeve and the rod are rotated as a unit to reduce the fluid intercepted by the turbine wheel.

摘要翻译： 涡轮机轮被安装成在杆的端部处旋转在圆柱形壳体中，壳体和杆穿过套筒以将涡轮机叶轮插入管线以拦截流过其中的流体。 杆的旋转位置在其通过套筒时被控制，以使涡轮机叶轮与流过管线的方向对准。 传感线圈感测涡轮机叶轮的旋转。 响应于拾取线圈，套筒和杆以一个单元旋转以减少由涡轮机叶轮拦截的流体。