公开(公告)号：US09709458B1

公开(公告)日：2017-07-18

申请号：US14623007

申请日：2015-02-16

Applicant: Elizabeth D Garvin ,  Timothy J Miller ,  Alex Pinera

Inventor： Elizabeth D Garvin ,  Timothy J Miller ,  Alex Pinera

IPC: G01M3/38 ,  G01J3/50 ,  G01M3/04 ,  F02K9/00

CPC classification number: G01M3/38 ,  F02K9/00 ,  G01J3/50 ,  G01M3/042 ,  G01N21/78

Abstract: A hydrocarbon leak detection sensor having a hydrocarbon indicator paint applied to a surface exposed to a flow in which the presence of a hydrocarbon is detected. The sensor is located at a low point in a static drain line that is connected to a main fuel line of a liquid propellant rocket engine between a main fuel valve and a fuel injector of a combustion chamber. The sensor includes a housing with a flow inlet port and a flow outlet port with an optical device opposed to a removable plug that secures a target disk with a hydrocarbon indicator paint applied to an exposed surface. A light source is used to illuminate the hydrocarbon indicator that changes color from white to red in the presence of a hydrocarbon.

公开(公告)号：US08057165B1

公开(公告)日：2011-11-15

申请号：US12131069

申请日：2008-05-31

Applicant: Elizabeth D Garvin ,  William S Walsh ,  Elizabeth V Stein ,  Alex Pinera

Inventor： Elizabeth D Garvin ,  William S Walsh ,  Elizabeth V Stein ,  Alex Pinera

IPC: F01B25/26 ,  G01M3/04

CPC classification number: G01M3/042 ,  G01M3/143

Abstract: A hydrocarbon presence sensor used to detect for the presence of a fuel in a buffer cavity of an inter-propellant seal. A sensor is formed on a rotor shaft in the buffer cavity and an optical imaging device is used to view a change in appearance of the sensor when a hydrocarbon forms on the surface. In one embodiment, the sensor is a coating of porous silicon. In other embodiments, the sensor can be a mirrored or frosted surface on the shaft. A white light source or a laser is reflected off of the sensor and an optical imaging device reads the reflected light to detect for a change in color or intensity of the light to indicate if a hydrocarbon is present on the sensor surface.

Abstract translation: 用于检测在推进剂密封件的缓冲腔中存在燃料的烃存在传感器。 传感器形成在缓冲腔中的转子轴上，并且当在表面上形成烃时，使用光学成像装置来观察传感器的外观变化。 在一个实施例中，传感器是多孔硅的涂层。 在其他实施例中，传感器可以是轴上的镜面或磨砂表面。 白光源或激光被从传感器反射出来，并且光学成像装置读取反射光以检测光的颜色或强度的变化，以指示传感器表面上是否存在烃。

公开(公告)号：US08845274B1

公开(公告)日：2014-09-30

申请号：US13245399

申请日：2011-09-26

Applicant: Elizabeth D. Garvin ,  Elizabeth V. Stein ,  Alex Pinera

Inventor： Elizabeth D. Garvin ,  Elizabeth V. Stein ,  Alex Pinera

IPC: F01D11/02 ,  F04D29/10 ,  F01D21/00

CPC classification number: F01D21/003 ,  F01D11/02 ,  G01M3/047 ,  G01M3/38

Abstract: A hydrocarbon presence sensor used to detect for the presence of a fuel in a buffer cavity of an inter-propellant seal. A sensor is formed on a rotor shaft in the buffer cavity and an optical imaging device is used to view a change in appearance of the sensor when a hydrocarbon forms on the surface. The sensor is formed from either an oil/fuel leak detection powder or an oil colorimetric developer. A white light source or a laser is reflected off of the sensor and an optical imaging device reads the reflected light to detect for a change in color or intensity of the light to indicate if a hydrocarbon is present on the sensor surface.

Abstract translation: 用于检测在推进剂密封件的缓冲腔中存在燃料的烃存在传感器。 传感器形成在缓冲腔中的转子轴上，并且当在表面上形成烃时，使用光学成像装置来观察传感器的外观变化。 传感器由油/油泄漏检测粉末或油比色显影剂形成。 白光源或激光被从传感器反射出来，并且光学成像装置读取反射光以检测光的颜色或强度的变化，以指示传感器表面上是否存在烃。