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公开(公告)号：US20160195411A1
公开(公告)日：2016-07-07
申请号：US14919225
申请日：2015-10-21
Applicant: United Technologies Corporation
Inventor： Kevin Ford , Eli Warren , Corey A. Benoit , Edward F. Dreger , Erik D. Rice , Mark W. Costa
CPC classification number: G01D5/2417 , F01D5/02 , F01D11/20 , F01D17/02 , F01D21/003 , F01D25/24 , F04D29/321 , F04D29/325 , F05D2220/32 , F05D2260/83 , G01B7/14 , G01M15/14 , Y02T50/672
Abstract: A capacitance probe monitors the distance between a blade tip and a fan, compressor or turbine case. The capacitance probe may be attached to a liner, and may travel with the liner as it radially expands due to thermal changes. The capacitance probe may include a circuit board sensor with a metallic plate, and one or more capacitors. The metallic plate may be encapsulated within an insulating material. A plurality of soft leads may be in electrical communication with the circuit board sensor, allowing a lower lead weight, reduced size and increased flexibility. The soft leads may also be embedded in the liner. In this way, the capacitance probe can record more accurate distance measurements and promote a gas turbine engine's continued and efficient operation.
Abstract translation: 电容探头监测叶片尖端与风扇，压缩机或涡轮机壳体之间的距离。 电容探针可以附接到衬垫上，并且随着衬垫随着热变化而径向膨胀而可以行进。 电容探针可以包括具有金属板的电路板传感器和一个或多个电容器。 金属板可以封装在绝缘材料内。 多个软引线可以与电路板传感器电连通，允许较低的引线重量，减小的尺寸和增加的灵活性。 软引线也可以嵌入衬管中。 以这种方式，电容探头可以记录更准确的距离测量，并促进燃气轮机的持续高效运行。
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公开(公告)号：US10731506B2
公开(公告)日：2020-08-04
申请号：US15846859
申请日：2017-12-19
Applicant: United Technologies Corporation
Inventor： Eli Cole Warren , Ian F. Agoos , Edward F. Dreger , Corey A. Benoit
Abstract: A wear indicator for detecting blade clearance in a gas turbine engine includes a capacitor connected to a first conductor and a second conductor. The capacitor includes a multiple of layers arranged transverse to a rub direction, each layer separated by an insulator and including a first plate, a second plate, and a dielectric between the first plate and the second plate. A method of detecting blade clearance in a gas turbine engine, includes determining a change in capacitance between the first and second capacitance and determining an amount of material removed from the wear indicator by the blade corresponding to the change in capacitance.
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公开(公告)号：US20190383594A1
公开(公告)日：2019-12-19
申请号：US16012632
申请日：2018-06-19
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Eli Cole Warren , Edward F. Dreger
IPC: G01B7/14
Abstract: A BTC probe may comprise a housing having a body, a neck extending radially from the body coupled to a hard lead comprising a hard shield, a driven guard, and a lead wire, and a cap coupled at a top surface of the body enclosing an interior volume of the housing. A sensor element may be disposed within the housing an coupled to the lead wire. The sensor element may comprise a sensor head having a first vertex.
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公开(公告)号：US20190186285A1
公开(公告)日：2019-06-20
申请号：US15846859
申请日：2017-12-19
Applicant: United Technologies Corporation
Inventor： Eli Cole Warren , Ian F. Agoos , Edward F. Dreger , Corey A. Benoit
Abstract: A wear indicator for detecting blade clearance in a gas turbine engine includes a capacitor connected to a first conductor and a second conductor. The capacitor includes a multiple of layers arranged transverse to a rub direction, each layer separated by an insulator and including a first plate, a second plate, and a dielectric between the first plate and the second plate. A method of detecting blade clearance in a gas turbine engine, includes determining a change in capacitance between the first and second capacitance and determining an amount of material removed from the wear indicator by the blade corresponding to the change in capacitance.
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