公开(公告)号：US11927151B2

公开(公告)日：2024-03-12

申请号：US18349410

申请日：2023-07-10

申请人： Combustion Research and Flow Technology, Inc.

发明人： Neeraj Sinha ,  Stephen M. Barr ,  Michael R. O'Gara

IPC分类号： F02K7/10 ,  B64D33/02 ,  F02C7/04

CPC分类号： F02K7/10 ,  B64D33/02 ,  B64D2033/026 ,  F02C7/04

摘要： An inlet duct for use with an engine is presented. The invention includes a duct structure, at least one spike disposed along an interior surface of the duct structure, and an inlet throat formed by one or more apexes disposed along an equal number of spikes. The inlet throat corresponds to the minimum cross-sectional area through which airflow passes as otherwise allowed by the maximal obstruction formed by the apex(es) within the duct structure. Each spike is bounded by a longitudinal ridge and a lateral ridge along an upper end and a base. The ridges intersect at the apex. A portion of each spike upstream of the inlet throat functions primarily as a supersonic diffuser and downstream as a subsonic diffuser. Airflow is isentropically compressed and then expanded within the inlet duct so that greater-than-subsonic flow at an input end is reduced to subsonic flow at an output end.

公开(公告)号：US11788493B2

公开(公告)日：2023-10-17

申请号：US17860157

申请日：2022-07-08

申请人： Combustion Research and Flow Technology, Inc.

发明人： Neeraj Sinha ,  Stephen M. Barr ,  Michael R. O'Gara

IPC分类号： F02K7/10 ,  B64D33/02 ,  F02C7/04

CPC分类号： F02K7/10 ,  B64D33/02 ,  B64D2033/026 ,  F02C7/04

摘要： An inlet duct for use with an engine is presented. The invention includes a duct structure, at least one spike disposed along an interior surface of the duct structure, and an inlet throat formed by one or more apexes disposed along an equal number of spikes. The inlet throat corresponds to the minimum cross-sectional area through which airflow passes as otherwise allowed by the maximal obstruction formed by the apex(es) within the duct structure. Each spike is bounded by a longitudinal ridge and a lateral ridge along an upper end and a base along a lower end. The longitudinal ridge and the lateral ridge intersect at the apex. In preferred embodiments, the longitudinal ridge is at least partially non-linear so as to properly conform to the interior surface of the duct structure. The portion of each spike upstream of the inlet throat functions primarily as a supersonic diffuser. The portion of each spike downstream of the inlet throat functions primarily as a subsonic diffuser. Airflow is isentropically compressed and then expanded within the inlet duct so that greater-than-subsonic flow at an input end is reduced to subsonic flow at an output end.

公开(公告)号：US5727773A

公开(公告)日：1998-03-17

申请号：US747167

申请日：1996-11-08

申请人： Dennis C. Dunnigan

发明人： Dennis C. Dunnigan

IPC分类号： F16K1/12 ,  F16K31/50

CPC分类号： F16K1/12

摘要： An adjustable fluid valve assembly includes a body that is operable to receive a spool that can be adjusted to vary the flow rate of the valve assembly. A lock nut secures the spool to the body and maintains the flow rate during operation of the valve assembly. The spool has a plurality of radially extending passages that allows fluid to be evenly distributed around the perimeter of the spool in a balanced manner in order to deliver a smooth continuous flow of fluid to an internal passage of the spool. An alternative embodiment employs a swivel fitting connected to the spool to allow adjustment of the fluid flow without disturbing the piping connected to the valve assembly.

摘要翻译： 可调节流体阀组件包括可操作以容纳可被调节以改变阀组件的流速的阀芯的主体。 锁定螺母将阀芯固定到阀体上并在阀组件运行期间保持流量。 阀芯具有多个径向延伸的通道，其允许流体以平衡的方式均匀地分布在卷轴的周边周围，以便将流体的平滑连续流动输送到卷轴的内部通道。 替代实施例采用连接到线轴的旋转配件，以允许调节流体流动而不干扰连接到阀组件的管道。

公开(公告)号：US4854154A

公开(公告)日：1989-08-08

申请号：US188978

申请日：1988-05-02

申请人： Michael W. Halpin

发明人： Michael W. Halpin

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 passes 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 draws the measuring piston through the measuring cylinder at a predetermined, constant speed and thereby determines the flow rate of the calibration. A reservoir means, connected to the measuring cylinder, is provided which maintains the pressure within the measuring cylinder at a substantially constant value. 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. The measuring cylinder is preferably provided with a larger second external fluid line connected between the ends of the measuring cylinder. The second external fluid line is provided with a check valve which permits the flow of fluid through the second fluid line when the measuring piston is returned to its starting point at the completion of 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通过的流量计。 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将测量活塞拉过量筒，从而确定校准的流量。 设置连接到量筒的储存装置，其将量筒内的压力维持在基本恒定的值。 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。 量筒优选地设置有连接在量筒的端部之间的较大的第二外部流体管线。 第二外部流体管线设置有止回阀，当在测试运行完成时，当测量活塞返回到其起点时，允许流体流过第二流体管线。

公开(公告)号：US4770048A

公开(公告)日：1988-09-13

申请号：US692877

申请日：1985-01-18

申请人： Lawrence A. Vinesky ,  Walter G. Wunsch

发明人： Lawrence A. Vinesky ,  Walter G. Wunsch

IPC分类号： G01F1/10 ,  G01F15/18

CPC分类号： G01F1/10 ,  G01F15/18

摘要： A flow meter includes a flow channel having walls and defining a direction of flow. Stators are provided, having walls, disposed at least partially within the flow channel. A rotor is included for rotating with respect to the stator. A one piece retainer is provided for assisting in limiting axial rotor movement comprising a first pair of spaced apart wall portions for engaging the flow channel walls wherein each wall portion in the first pair of wall portions is located on a side of an axis opposite from the other. A second wall portion is located on the axis for engaging the stator wall wherein compression of each of the first pair of wall portions toward the axis results in a component of force being applied to the second wall portion along the axis.

摘要翻译： 流量计包括具有壁并限定流动方向的流动通道。 定子被设置成具有至少部分地设置在流动通道内的壁。 包括用于相对于定子旋转的转子。 提供一个单件保持器，用于帮助限制轴向转子运动，包括第一对间隔开的壁部分，用于接合流动通道壁，其中第一对壁部分中的每个壁部分位于与第一对壁部相对的轴线的一侧 其他。 第二壁部分位于轴线上用于接合定子壁，其中第一对壁部分中的每一个朝向轴线的压缩导致沿轴线施加到第二壁部分的力分量。

公开(公告)号：US20230349344A1

公开(公告)日：2023-11-02

申请号：US18349410

申请日：2023-07-10

申请人： Combustion Research and Flow Technology, Inc.

发明人： Neeraj Sinha ,  Stephen M. Barr ,  Michael R. O'Gara

IPC分类号： F02K7/10 ,  B64D33/02 ,  F02C7/04

CPC分类号： F02K7/10 ,  B64D33/02 ,  F02C7/04 ,  B64D2033/026

摘要： An inlet duct for use with an engine is presented. The invention includes a duct structure, at least one spike disposed along an interior surface of the duct structure, and an inlet throat formed by one or more apexes disposed along an equal number of spikes. The inlet throat corresponds to the minimum cross-sectional area through which airflow passes as otherwise allowed by the maximal obstruction formed by the apex(es) within the duct structure. Each spike is bounded by a longitudinal ridge and a lateral ridge along an upper end and a base. The ridges intersect at the apex. A portion of each spike upstream of the inlet throat functions primarily as a supersonic diffuser and downstream as a subsonic diffuser. Airflow is isentropically compressed and then expanded within the inlet duct so that greater-than-subsonic flow at an input end is reduced to subsonic flow at an output end.

公开(公告)号：US20230194099A1

公开(公告)日：2023-06-22

申请号：US18009118

申请日：2022-07-01

申请人： Combustion Research and Flow Technology, Inc.

发明人： Andrea C. Zambon ,  Balaji Muralidharan ,  William H. Calhoon, Jr. ,  Ashvin Hosangadi

IPC分类号： F23R3/42 ,  F02C7/22 ,  G06F30/17

CPC分类号： F23R3/42 ,  F02C7/22 ,  G06F30/17

摘要： A method for designing a combustion system which emits less of at least one environmentally-harmful emission is presented. In a describing step, an injector which introduces a fuel into a combustion chamber is described via a CFD code. In a modeling step, combustion kinetics of the fuel are modeled via a pre-processing code as the fuel mixes and reacts with an oxidizer. In a first selecting step, at least one primary scalar is derived during the modeling of the combustion kinetics. In a performing step, a table look-up is performed to obtain at least one data from a look-up database based on the primary scalar. In a second selecting step, at least one secondary scalar is selected in addition to the primary scalar(s). In a specifying step, at least one chemical pathway of formation or destruction for the secondary scalar is specified via a chemistry manager wherein the secondary scalar is representative of the environmentally-harmful emission(s) of the chemical pathway(s). In a utilizing step, the data is utilized to evaluate the chemical pathway(s) to quantify the environmentally-harmful emission(s). In an identifying step, an improvement to the combustion system is identified which reduces the environmentally-harmful emission(s).

公开(公告)号：US20230091268A1

公开(公告)日：2023-03-23

申请号：US17860157

申请日：2022-07-08

申请人： Combustion Research and Flow Technology, Inc.

发明人： Neeraj Sinha ,  Stephen M. Barr ,  Michael R. O'Gara

IPC分类号： F02K7/10 ,  B64D33/02

摘要： An inlet duct for use with an engine is presented. The invention includes a duct structure, at least one spike disposed along an interior surface of the duct structure, and an inlet throat formed by one or more apexes disposed along an equal number of spikes. The inlet throat corresponds to the minimum cross-sectional area through which airflow passes as otherwise allowed by the maximal obstruction formed by the apex(es) within the duct structure. Each spike is bounded by a longitudinal ridge and a lateral ridge along an upper end and a base along a lower end. The longitudinal ridge and the lateral ridge intersect at the apex. In preferred embodiments, the longitudinal ridge is at least partially non-linear so as to properly conform to the interior surface of the duct structure. The portion of each spike upstream of the inlet throat functions primarily as a supersonic diffuser. The portion of each spike downstream of the inlet throat functions primarily as a subsonic diffuser. Airflow is isentropically compressed and then expanded within the inlet duct so that greater-than-subsonic flow at an input end is reduced to subsonic flow at an output end.

公开(公告)号：US09651186B2

公开(公告)日：2017-05-16

申请号：US14774950

申请日：2014-11-19

申请人： Combustion Research and Flow Technology, Inc.

发明人： Vineet Ahuja ,  Roger M. Birkbeck ,  Ashvin Hosangadi

IPC分类号： F16L55/07 ,  F16L55/04 ,  F16L55/027 ,  F15D1/02

CPC分类号： F16L55/04 ,  F15D1/025 ,  F16L55/02736 ,  F16L55/02754

摘要： A flow conditioning device for incrementally stepping down pressure within a piping system is presented. The invention includes an outer annular housing, a center element, and at least one intermediate annular element. The outer annular housing includes an inlet end attachable to an inlet pipe and an outlet end attachable to an outlet pipe. The outer annular housing and the intermediate annular element(s) are concentrically disposed about the center element. The intermediate annular element(s) separates an axial flow within the outer annular housing into at least two axial flow paths. Each axial flow path includes at least two annular extensions that alternately and locally direct the axial flow radially outward and inward or radially inward and outward thereby inducing a pressure loss or a pressure gradient within the axial flow. The pressure within the axial flow paths is lower than the pressure at the inlet end and greater than the vapor pressure for the axial flow. The invention minimizes fluidic instabilities, pressure pulses, vortex formation and shedding, and/or cavitation during pressure step down to yield a stabilized flow within a piping system.

公开(公告)号：US07451807B2

公开(公告)日：2008-11-18

申请号：US10544024

申请日：2004-01-29

申请人： Lars Persson

发明人： Lars Persson

IPC分类号： F28D9/00 ,  B21D53/26

CPC分类号： F28D9/0093 ,  B01D53/265 ,  F28D9/005 ,  F28D21/0015 ,  F28D2021/0038 ,  F28F3/04

摘要： A heat exchanger and a method for drying a humid medium. In the heat exchanger an internal cross-over passage, allowing a humid medium to double back on itself in a zone delimited by a barrier, is provided. In a first step the heat exchanger cools itself and in a final step the heat exchanger heats itself. Separation areas allow condensation and collection of water within the heat exchanger. The heat exchanger and method enable drying of compressed air within one and the same heat exchanger package.

摘要翻译： 一种热交换器和一种用于干燥湿介质的方法。 在热交换器中，提供内部交叉通道，允许潮湿介质在由隔离物限定的区域中自身双重回缩。 在第一步中，热交换器自身冷却，在最后一步中，热交换器自身加热。 分离区域允许在热交换器内冷凝和收集水。 热交换器和方法能够在同一个热交换器包装内干燥压缩空气。