Furnace for heat treating objects under pressure
    412.
    发明授权
    Furnace for heat treating objects under pressure 失效
    用于加压处理对象的炉

    公开(公告)号:US3695597A

    公开(公告)日:1972-10-03

    申请号:US3695597D

    申请日:1970-09-01

    Applicant: ASEA AB

    Inventor: LUNDSTROM HANS

    Abstract: In manufacturing sintered bodies, a compacted charge of powder forming a billet is enclosed in a sealed casing of soft metal such as steel from which the air has been evacuated. The casing and powder are subjected to pressure at high temperature in a furnace chamber to sinter the powder. Before its introduction into the chamber, the charge is heated outside the furnace to treating temperature. The charge is inserted from below into the furnace, after which the bottom opening of the furnace is closed and pressure medium is introduced. The furnace has an insulating sheath within the furnace chamber depending from the top of the chamber and terminating near its bottom. The material of the casing is so chosen that there will be substantially no interchange of material especially of carbon, with the material of the compacted billet.

    Abstract translation: 在制造烧结体中,将形成坯料的粉末的粉碎装料封装在诸如钢之类的软金属密封壳体中,空气已经从中排出。 将壳体和粉末在炉室中在高温下进行压力以烧结粉末。 在引入室之前,将电荷在炉外加热至处理温度。 将电荷从下方插入炉中,然后关闭炉的底部开口并引入压力介质。 该炉在炉室内具有绝缘护套,其从腔室的顶部悬垂并在其底部附近终止。 套管的材料如此选择,使得特别是碳的材料与压实坯料的材料基本上不会相互交换。

    High voltage electric network
    413.
    发明授权
    High voltage electric network 失效
    高压电网

    公开(公告)号:US3689823A

    公开(公告)日:1972-09-05

    申请号:US3689823D

    申请日:1971-03-01

    Applicant: ASEA AB

    Inventor: UHLMANN ERICH

    CPC classification number: H02J3/36 Y02E60/60 Y10T307/707

    Abstract: A high voltage electric network has an AC part and a DC part and a converter station connecting the parts. An arrangement is provided for controlling the converter station to maintain a predetermined power exchange between the two parts of the network and to dampen oscillations arising in the AC part. The AC part has two portions as seen from the connection point of the converter station. The converter station is connected to the AC part by an inductive member which has an intermediate output connected to the portion of the AC part of lower impedance while one end of the inductive member is connected to the converter and the other end portion of the AC part.

    Abstract translation: 高压电网具有交流部分和连接部件的直流部分和转换器站。 提供了一种用于控制转换器站以维持网络的两个部分之间的预定功率交换并且抑制在AC部分中产生的振荡的装置。 从转换站的连接点看,AC部件有两部分。 转换站通过一个电感元件连接到交流部分,该电感元件的中间输出端连接到低阻抗交流部分的一部分,而电感元件的一端连接到转换器,交流部分的另一端 。

    Operating means for electric switching apparatus for high voltage
    414.
    发明授权
    Operating means for electric switching apparatus for high voltage 失效
    用于高压电切换装置的操作手段

    公开(公告)号:US3683142A

    公开(公告)日:1972-08-08

    申请号:US3683142D

    申请日:1971-05-07

    Applicant: ASEA AB

    CPC classification number: H01H33/42

    Abstract: In an operating device for high voltage gas blast circuit breakers, the opening impulse is transmitted from earth to high potential by means of an insulating tension rod. A high initial acceleration of the rod is obtained by suddenly evacuating a pressurized cylinder space at earth potential through an electrodynamically operated valve.

    Abstract translation: 在高压气体爆破断路器的操作装置中,打开脉冲通过绝缘拉杆从地面传递到高电位。 杆的高初始加速度是通过电动阀来突然排出加压缸体空间在地电位的。

    High voltage circuit breaker of low liquid type
    415.
    发明授权
    High voltage circuit breaker of low liquid type 失效
    低液位型高压断路器

    公开(公告)号:US3670127A

    公开(公告)日:1972-06-13

    申请号:US3670127D

    申请日:1971-04-21

    Applicant: ASEA AB

    Inventor: GARD INGE

    CPC classification number: H01H33/55

    Abstract: In a high voltage circuit breaker of low liquid type the breaking chambers are pressurized to prevent the circuit breaker from restriking when breaking capacitive loads. All the seals required for these pressurized chambers are located below the liquid level in each chamber.

    Abstract translation: 在低液体型高压断路器中,分断室被加压,以防止断路器在断开电容性负载时再起弧。 这些加压室所需的所有密封都位于每个室中的液面以下。

    A triggering circuit for triggering series-connected spark gaps
    416.
    发明授权
    A triggering circuit for triggering series-connected spark gaps 失效
    用于触发串联火花点火的触发电路

    公开(公告)号:US3662215A

    公开(公告)日:1972-05-09

    申请号:US3662215D

    申请日:1971-03-25

    Applicant: ASEA AB

    Inventor: SCHEI ASLE

    CPC classification number: H01T4/16 B65G25/02 H02H9/06

    Abstract: A chain of series-connected spark gap piles have two grading chains in parallel therewith with connections therebetween. An arrangement is provided for triggering one of the spark gap piles. When this pile is triggered, all the spark gap piles in the chain spark over if the voltage over the spark gap piles between two connections from a grading chain is not less than the spark-over voltage for each of these piles. One grading chain is formed of a number of resistors and capacitors in parallel connected across each end gap pile and each pair of other gap piles, and the other grading chain is formed of resistors in the chain between the pairs of gap piles and circuits formed of a capacitor and a resistor in parallel with each pair of gap piles.

    Abstract translation: 串联连接的火花隙桩具有与其平行的两个分级链,其间具有连接。 提供了用于触发火花塞桩之一的装置。 当桩被触发时,如果从分级链的两个连接点之间的火花间隙上的电压堆积在这些桩中的每一个上的火花塞电压不小于链中的所有火花隙桩。 一个分级链由多个电阻器和电容器组成,并联连接在每个端部缝隙桩和每对其它间隙桩上,另一个分级链由链中的电阻器形成,间隙桩和电路对由 电容器和与每对间隙堆并联的电阻器。

    Variable overvoltage protection means for dc networks
    417.
    发明授权
    Variable overvoltage protection means for dc networks 失效
    用于直流网络的可变过流保护装置

    公开(公告)号:US3628124A

    公开(公告)日:1971-12-14

    申请号:US3628124D

    申请日:1970-10-09

    Applicant: ASEA AB

    Inventor: JOHANSSON ARNE

    CPC classification number: H02H9/06

    Abstract: An overvoltage protection device for a DC transmission line connecting two stations, each station including several seriesconnected converters each provided with a bypass member, has a series of lightning arrester units connected between the transmission line and earth. At least all but one of the lightning arresters has a bypass device. Relays for closing the bypass devices to short circuit the lightning arresters are connected to the bypass members for the converters in such a way that the number of bypassed lightning arresters corresponds to the number of bypassed converters.

    Marshalling yard retarder
    418.
    发明授权
    Marshalling yard retarder 失效
    MARSHALLING YARD拖车

    公开(公告)号:US3621942A

    公开(公告)日:1971-11-23

    申请号:US3621942D

    申请日:1969-11-21

    Applicant: ASEA AB

    CPC classification number: B61K7/08

    Abstract: A marshalling yard retarder includes a mechanical braking means with elongated braking members on both sides of the rail movable towards and from the vertical plane of the rail to engage against a wheel rolling on the rail. The braking members are pivoted about horizontal axes and are actuated by hydraulic pistons which are flexibly mounted. The cylinders are supplied by a supply conduit containing a nonreturn valve and a return conduit having a pressure-limiting overflow member which is connected to a storage tank from which the pressure medium is drawn. There may be two pressure-limiting overflow members set for different pressures, and a weighing means for selectively connecting these members to the return line.

    Hydrostatic extrusion of compound material
    419.
    发明授权
    Hydrostatic extrusion of compound material 失效
    复合材料的疏水挤压

    公开(公告)号:US3620059A

    公开(公告)日:1971-11-16

    申请号:US3620059D

    申请日:1968-09-09

    Applicant: ASEA AB

    Inventor: NILSSON JAN

    Abstract: IN HYDROSTATIC EXTRUSION OF A WIRE OR ROD CONSTITUTED BY A CASING OF ONE MATERIAL AND A CORE OF ANOTHER, USUALLY A SOFTER MATERIAL, A BILLET IS EXTRUDED THROUGH A DIE FROM A PRESSURE CHAMBER PROVIDED WITH A CONICAL SURFACE, ADJACENT THE DIE OPENING, THE BILLET IS SO CONSTRUCTED THAT THE AXIAL FORCES CREATED BY THE DIFFERENCES IN MOLDING RESISTANCE OF THE DIFFERENT MATERIALS ARE TRANSFERRED BETWEEN THE CASING AND THE CORE. THIS IS DONE BY PRESSING THE REAR END OF THE CASING INTO A GROOVE IN THE CORE.

    THE JOINT BETWEEN THE CASING AND CORE IS SEALED AT THE REAR ENDS. THE FRONT END OF THE CORE IS SHAPED TO MATCH THE CONICAL SURFACE OF THE DIE, AND THE CASING MAY BE BROUGHT DOWN OVER THIS FRONT END, THE FRONT END OF THE CASING TAPERING IN THICKNESS. SUCCESSIVE CASING AND CORES MAY BE JOINED ONTO THE REMAINING PARTS OF CASINGS AND CORES OF A PREVIOUS BILLET WHICH HAS BEEN LARGELY EXTRUDED.

Patent Agency Ranking