Overload-protection circuit for electric motors
    1.
    发明授权
    Overload-protection circuit for electric motors 失效
    电机过载保护电路

    公开(公告)号:US4156262A

    公开(公告)日:1979-05-22

    申请号:US875078

    申请日:1978-02-03

    CPC分类号: H02H1/0007

    摘要: An overload-protection circuit for an electric motor has a current transformer whose primary winding is connected in series with the windings of the motor to be protected while two secondary windings are provided. The first secondary winding is connected to an actual-value current-monitoring circuit while the second secondary winding forms part of a voltage-supply network for the circuit. The primary winding is subdivided into a plurality of winding sections having respective taps for different nominal values of the overload current. The product of the number of turns of each winding section and the nominal-current value of the respective tap (ampere-turns) is the same for each winding and the respective tap.

    摘要翻译: 电动机的过载保护电路具有电流互感器,其一次绕组与被保护的电动机的绕组串联连接,同时提供两个次级绕组。 第一次级绕组连接到实际电流监测电路,而第二次级绕组构成电路的电压网络的一部分。 初级绕组被细分成具有用于不同额定值的过载电流的各个抽头的多个绕组部分。 每个绕组部分的匝数与各个抽头的额定电流值(安培匝数)的乘积对于每个绕组和相应的抽头是相同的。

    Protective sheath for optical waveguide splice
    2.
    发明授权
    Protective sheath for optical waveguide splice 失效
    光波导接头保护套

    公开(公告)号:US4863234A

    公开(公告)日:1989-09-05

    申请号:US237639

    申请日:1988-08-26

    IPC分类号: G02B6/24 G02B6/38 G02B6/44

    CPC分类号: G02B6/2558

    摘要: Protective sheath for fusion or adhesive optical waveguide splice. The protective sheath comprises a fusion bonding sleeve surrounding the splice and a shrinkable sleeve surrounding the fusion bonding sleeve. An oblong support is arranged between the fusion bonding sleeve and the shrinkable sleeve to protect the splice. The support has an open channel in which the splice is arranged.

    摘要翻译: 用于融合或粘合光波导接头的保护套。 保护套包括围绕接头的熔接接合套和围绕熔接接合套的可收缩套筒。 在熔接接合套筒和可收缩套管之间布置有长方形支撑以保护接头。 支架具有开放的通道,其中布置了接头。

    Solar power plant including a solar heater on a tower
    3.
    发明授权
    Solar power plant including a solar heater on a tower 失效
    太阳能发电厂包括塔上的太阳能加热器

    公开(公告)号:US4387574A

    公开(公告)日:1983-06-14

    申请号:US258369

    申请日:1981-04-28

    IPC分类号: F03G6/06 F03G7/02

    摘要: Solar power plant, including a tower, a solar heater disposed on the tower, a plurality of reflectors disposed in a given area for irradiating the solar heater, a water-steam circuit connected to the solar heater for conducting working medium thereto, a steam turbine connected in the water-steam circuit, a preheater for the working medium in the form of additional sunlight collectors being disposed outside of the given area and being connected to the water-steam circuit upstream of the solar heater, and means for adjusting the pressure in the water-steam circuit to cause the pressure of the steam in the solar heater to approximate the atmospheric air pressure outside.

    摘要翻译: 太阳能发电厂,包括塔架,设置在塔架上的太阳能加热器,设置在给定区域中的多个反射器,用于照射太阳能加热器;连接到太阳能加热器的水蒸汽回路,用于将工作介质传送到其上;汽轮机 连接在水蒸汽回路中,用于工作介质的预热器以额外的阳光收集器的形式设置在给定区域的外部并连接到太阳能加热器上游的水蒸气回路,以及用于调节 水蒸汽回路使太阳能加热器中的蒸汽压力接近外界的大气压力。