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    • 1. 发明授权
    • Method and device for automatic compensation of the attenuation of a
fiber optical measurement value transmission
    • 自动补偿光纤测量值传输衰减的方法和装置
    • US4810873A
    • 1989-03-07
    • US113864
    • 1987-10-29
    • Urs AmmannThomas DoblerMartin MaschekGeorg Mastner
    • Urs AmmannThomas DoblerMartin MaschekGeorg Mastner
    • H04B10/25H01J5/16H01J40/14
    • H04B10/25
    • Measurement value signals (S1), for example from a signal transmitter which is located at high-voltage potential, which are transmitted by a signal transmitter (1) with a transmit diode (6) on the high voltage side via an optical waveguide (8) to a signal receiver (9) with a photodiode (10) at ground potential, are subject to an optical signal attenuation along the way. To ensure automatic attenuation compensation both for alternating and for direct voltage measurement signals (S1), a reference direct current (I.sub.REF) is fed back to the transmit diode (6). The transmission system is calibrated before each measurement. During this process, the input of an amplifier (4) of the signal transmitter (1) is connected to reference potential (U0) via a switch (3) and the gain factor of the signal receiver (9) is controlled in such a manner that its output signal (S9) is equal to a predeterminable reference voltage (U.sub.REF). The output signal (S14) of a differential amplifier (14) is supplied via a lowpass filter (16) and a 1st post amplifier (17) to an instantaneous-value memory (18), the output signal (S18) of which controls the gain factor. After the calibrated state has been reached, the closed-loop control circuit is interrupted so that the gain factor remains constant until a new calibration is performed. The gain factor can be adjusted via electrically, electromechanically or optically controllable resistances or a multiplier or via the bias voltage of an avalanche photodiode (10).
    • 测量值信号(S1),例如来自位于高电位电位的信号发射器,由具有发射二极管(6)的信号发射器(1)通过光波导(8)在高压侧传输 )到具有接地电位的光电二极管(10)的信号接收器(9)沿着路径受到光信号衰减。 为了确保交流和直流电压测量信号(S1)的自动衰减补偿,参考直流(IREF)被反馈到发射二极管(6)。 传输系统在每次测量之前进行校准。 在该过程中,信号发送器(1)的放大器(4)的输入经由开关(3)连接到参考电位(U0),并且以这种方式控制信号接收器(9)的增益因子 其输出信号(S9)等于可预定的参考电压(UREF)。 差分放大器(14)的输出信号(S14)经由低通滤波器(16)和第一后置放大器(17)提供给瞬时值存储器(18),其输出信号(S18)控制 增益因子。 在达到校准状态之后,闭环控制电路被中断,使得增益因子保持恒定,直到执行新的校准。 增益因子可以通过电气,机电或光学可控电阻或乘法器或通过雪崩光电二极管(10)的偏置电压进行调整。
    • 3. 发明授权
    • Optic pyrometer for gas turbines
    • 燃气轮机的光学高温计
    • US6109783A
    • 2000-08-29
    • US137681
    • 1998-08-21
    • Thomas DoblerWolfgang EversKen Haffner
    • Thomas DoblerWolfgang EversKen Haffner
    • G01J5/08F02C7/00G01J5/00G01J5/10G01K1/08G01K13/10G01K1/11
    • G01J5/0022
    • The present invention discloses a high temperature pyrometer 20 which is suitable, in particular, for temperature measurement in a gas turbine. The pyrometer comprises a flexible lightguiding measuring probe 21 with a microlens 22 resistant to high temperatures and with an optic fiber 24 composed of quartz or sapphire, said microlens and said fiber being provided with a gold sheathing 25, 26 and/or a protective capillary 27, 28. The heat radiation is evaluated in a remote detector 32 having measuring electronics 33 connected to it. The pyrometer 20 is distinguished by compactness, high temperature capability, flexibility, versatile installability and high measuring accuracy. The invention also relates to a development of the pyrometer 20 for gas turbines, to a gas turbine with a pyrometer 20 according to the invention, and to a method for monitoring a gas turbine with the aid of a pyrometer 20. Explanations are given of ways in which the measuring probe 21 can be fitted in guide blades 34, 48 and by means of which accurate temperature measurements are possible on moving and guide blades 34, 35, 48, 49 in low pressure and high pressure turbines. The operating safety and the efficiency of gas turbines can thereby be increased.
    • 本发明公开了一种高温高温计20,特别适用于燃气轮机的温度测量。 高温计包括柔性导光测量探头21,其具有耐高温的微透镜22和由石英或蓝宝石构成的光纤24,所述微透镜和所述光纤设置有金护套25,26和/或保护性毛细管27 在具有与其连接的测量电子装置33的远程检测器32中评估热辐射。 高温计20具有紧凑性,高温能力,灵活性,通用安装性和高测量精度的特点。 本发明还涉及用于燃气轮机的高温计20,根据本发明的具有高温计20的燃气轮机的开发,以及借助于高温计20来监测燃气轮机的方法。说明方式 其中测量探针21可以装配在导向叶片34,48中,并且借助于这些测量探针21可以在低压和高压涡轮机中的移动和引导叶片34,35,48,49上进行精确的温度测量。 从而可以提高燃气轮机的操作安全性和效率。
    • 4. 发明授权
    • Coupling for a light-conducting fiber
    • 用于导光纤维的耦合
    • US4639077A
    • 1987-01-27
    • US632429
    • 1984-07-19
    • Thomas Dobler
    • Thomas Dobler
    • G02B6/42G02B6/36
    • G02B6/4204G02B6/4202
    • A coupling for a light-conducting fiber, including a metal coupling body, a first device for holding a light-conducting fiber disposed in one side of the metal body and, a second device for holding an opto-electronic transmitting element provided in the other side of the metal body. An opto-electronic transmitting element located in a housing is thermally coupled to the coupling body via a metal cap placed on the housing. As a result of this coupling, the thermal loading of the transmitting element is considerably reduced. For purposes of electrical isolation, an insulating layer can be additionally applied between the metal cap and the coupling body.
    • 用于导光纤维的耦合器,包括金属耦合体,用于保持设置在金属体的一侧的导光纤维的第一装置,以及用于保持设置在另一个中的光电传输元件的第二装置 一边的金属体。 位于壳体中的光电传输元件经由放置在壳体上的金属盖热耦合到耦合体。 作为该耦合的结果,传输元件的热负荷大大降低。 为了电隔离,可以在金属盖和联接体之间额外施加绝缘层。