公开(公告)号：US3743906A

公开(公告)日：1973-07-03

申请号：US3743906D

申请日：1970-11-25

Applicant: ASEA AB

Inventor： TOEROEK VILMOS

IPC: H02P8/00 ,  B60J7/057 ,  H02K19/10 ,  H02P5/00 ,  H02P6/06 ,  H02P25/08 ,  H02K29/00

CPC classification number: H02P25/08 ,  B60J7/0573 ,  H02K19/103

Abstract: A reluctance motor has a stator with a plurality of stator pole bodies arranged circumferentially one after the other and supporting a body and a rotor with a plurality of rotor poles arranged circumferentially one after the other, so that a given turning movement of the rotor causes the permeance between a stator pole and a rotor pole to increase from a minimum value to a maximum value upon half the movement, and then to decrease progressively to the minimum value. The winding is connected to a current source, the voltage of which during motor operation is synchronized in such a way that the average value of the current flowing through the winding while the permeance is increasing is greater than while it is decreasing. The current source is a controlled semiconductor converter connected between a network and a winding and which forms a part of a controlled circuit and delivers a direct current. A current comparison device which controls the converter compares the difference between the current flow through the converter and a varying reference value. This varying reference value is furnished by the combination of a constant reference value and a second reference value, the supply of which is controlled by a switching device operating synchronously with the rotation of the motor. The reference value supplied to the switching device is a combination of a predetermined reference value and a value dependent on the speed of rotation. A phase-advancing circuit is provided to advance the operation of the switch means proportionately to the speed of rotation.

Abstract translation: 磁阻电动机具有定子，多个定子极体沿周向一个接一个地布置并且支撑体和转子，多个转子磁极沿周向一个接一个排列，使得转子的给定的转动使得 定子极与转子极之间的磁导率在运动的一半时从最小值增加到最大值，然后逐渐减小到最小值。 绕组连接到电流源，其电动机操作期间的电压被同步，使得当磁导增加时流过绕组的电流的平均值大于其减小时的平均值。

公开(公告)号：US3742321A

公开(公告)日：1973-06-26

申请号：US3742321D

申请日：1971-05-07

Applicant: ASEA AB

Inventor： BERGMAN K ,  DYBVIG A ,  KAIN P ,  SORENSEN F

IPC: H02P5/69 ,  H02P5/747 ,  H02P5/46

CPC classification number: H02P5/69 ,  H02P5/747

Abstract: For stabilizing the operation of the motors in a system having a machine such as a rotary kiln driven by two motors, and where speed fluctuations of different frequencies may occur in the system, the motors are controlled through a single control member when the fluctuations are below a certain frequency whereas for fluctuation above that frequency a high pass filter permits the control signals to pass individually to the two motors.

公开(公告)号：US3736360A

公开(公告)日：1973-05-29

申请号：US3736360D

申请日：1971-10-27

Applicant: ASEA AB

Inventor： BERGMAN C ,  LARSSON P

IPC: B22F3/10 ,  C04B35/56 ,  F27B11/00 ,  G05D16/20 ,  F27D7/06

CPC classification number: B22F3/1007 ,  B22F3/10 ,  B22F2201/20 ,  B22F2203/03 ,  C04B35/56 ,  G05D16/202

Abstract: A control system for an electrically heated furnace for sintering powder bodies, especially bodies of hard metal, has a vacuum pump connected to the interior of the furnace chamber by a suction conduit. The furnace includes a plurality of heating elements for different zones, a temperature sensitive instrument for each zone and a controlled measuring instrument for one of the zones which is the master zone. These instruments are connected to a master regulator for the furnace and slave regulators for the individual zones. A throttle valve in the vacuum conduit, or a controlled tap connected to the vacuum conduit, make it possible to keep the pressure in the furnace constant despite the fact that the pump runs at a constant speed. A pressure-sensing member connected to the vacuum conduit is also connected to the regulators for the heating elements.

Abstract translation: 用于烧结粉末体，特别是硬质金属体的电加热炉的控制系统具有通过抽吸管连接到炉室内部的真空泵。 炉子包括用于不同区域的多个加热元件，用于每个区域的温度敏感仪器和用于作为主区域的区域之一的受控测量仪器。 这些仪器连接到用于各个区域的炉和从调节器的主调节器。 真空管道中的节流阀或连接到真空管道的受控分接器使得可以将炉中的压力保持恒定，尽管泵以恒定的速度运行。 连接到真空管道的压力感测构件也连接到用于加热元件的调节器。

公开(公告)号：US3733250A

公开(公告)日：1973-05-15

申请号：US3733250D

申请日：1969-12-01

Applicant: ASEA AB

Inventor： VAN SANTEN A ,  ELOFSSON K

IPC: G21C3/326 ,  G21C3/335 ,  G21C19/10 ,  G21C19/20

CPC classification number: G21C19/10 ,  G21C3/326 ,  G21C3/335 ,  G21C19/205 ,  Y02E30/38 ,  Y10S294/906

Abstract: A nuclear reactor formed of fuel assemblies each including a plurality of parallel fuel rods arranged in a predetermined fuel rod lattice, which rods are freely extractable and insertable at one end of the fuel assembly, is refueled by extracting from one of the fuel assemblies a number of fuel rods substantially less than the total number of fuel rods and replacing these by inserting new fuel rods into the vacated positions. This is done for a majority of fuel assemblies of the reactor. At the next refueling operation different fuel rods from those previously replaced are removed and replaced. The removal and return of the rods is produced by a tool having a plurality of gripping members capable of engaging shoulder beneath head formed on the upper ends of the fuel rods. This may be accomplished by providing a tool having a numbers of gripping members attached to the tool body corresponding to the lattice positions of the fuel rods to be extracted, having gripping members which can be pushed together to grip beneath shoulders on the upper ends of the fuel rods.

公开(公告)号：US3728611A

公开(公告)日：1973-04-17

申请号：US3728611D

申请日：1971-12-23

Applicant: ASEA AB

Inventor： ELVIN S

IPC: H01F29/04 ,  G05F1/20

CPC classification number: H01H9/0005 ,  H01F29/04 ,  H01H9/548 ,  H02P13/06

Abstract: A tap changer for switching the load current of a transformer from a first winding output to a second winding output includes two pairs of anti-parallel connected semi-conductor rectifiers with a control device for each pair. A switch arrangement is provided for connecting each of the pairs between any of the outputs and a load current connection. The device includes a control arrangement for controlling and performing the switch between the outputs, which includes a device for transmitting the load current from the rectifier pair connected to one winding output to the pair connected to an adjacent winding output. This transfer is carried out partly by natural commutation except when there is a decrease in the turns of the winding and at the same time a resistive load and partly by means of switching when the load current passes through zero upon a decrease in the turns of the winding and at the same time a resistive load.

Abstract translation: 用于将变压器的负载电流从第一绕组输出切换到第二绕组输出的分接开关包括两对反并联连接的半导体整流器，其具有用于每对的控制装置。 提供了一种开关装置，用于连接任何输出和负载电流连接中的每一对。 该装置包括用于控制和执行输出之间的开关的控制装置，其包括用于将连接到一个绕组输出的整流器对的负载电流传输到连接到相邻绕组输出的对的装置。 该转移部分地通过自然换向进行，除了当绕组的匝数减小并且同时存在电阻负载并且部分地通过在负载电流通过零时减小的情况下通过切换而进行的 并且同时具有电阻负载。

公开(公告)号：US3728026A

公开(公告)日：1973-04-17

申请号：US3728026D

申请日：1971-11-08

Applicant: ASEA AB

Inventor： IDESTROM E ,  LING B ,  PERSSON A

IPC: G01S13/10 ,  G01C3/08

CPC classification number: G01S13/103

Abstract: An arrangement for measuring distance under conditions when disturbances of various types may be expected to occur between the measuring instrument and the object to which the distance is to be measured comprises an emitter unit arranged to emit a series of electro-magnetic pulses in the direction of the object and a receiver unit, which only registers the very first echo from each single pulse emitted, and the echo which of all those registered has covered the longest distance is considered to comprise a measurement of the distance to the object in question.

Abstract translation: 在测量仪器和要测量距离的物体之间可能期望出现各种类型的干扰的条件下测量距离的装置包括：发射器单元，其布置成沿着 对象和接收器单元仅记录从发射的每个单个脉冲中的第一个回波，并且所有记录的那些被覆盖了最长距离的回波被认为包括到所讨论的对象的距离的测量。

公开(公告)号：US3727444A

公开(公告)日：1973-04-17

申请号：US3727444D

申请日：1972-03-01

Applicant: ASEA AB

Inventor： NILSSON J

IPC: B21C23/00 ,  B21C23/08

CPC classification number: B21C23/007

Abstract: In the hydrostatic extrusion of tubing, a hollow billet is pressed forward into the conical die opening of the press by a following piston until the material of the billet is pressed inwardly against the mandrel and is shaped to the conical surface of the die, after which pressure fluid is admitted around the billet for hydrostatic extrusion.

Abstract translation: 在管道的静水挤压中，中空坯料通过后续活塞向前压入压力机的圆锥形模具开口中，直到钢坯的材料向内压靠在心轴上并被成形为模具的锥形表面，此后 压力流体被容纳在坯料周围用于静液压挤出。

公开(公告)号：US3721895A

公开(公告)日：1973-03-20

申请号：US3721895D

申请日：1972-06-09

Applicant: ASEA AB

Inventor： NORMAN S ,  HAMMAR E

IPC: H01H9/00 ,  H02P13/06 ,  H01H19/58

CPC classification number: H01H9/0005

Abstract: A TAP CHANGER FOR TRANSFORMERS HAS STEP SELECTORS AND LOAD CONNECTORS. THE STEP SELECTOR HAS A CENTER PART PROVIDED WITH CARRIER MEMBERS FOR MOVABLE CONNECTION CONTACTS AND SLIP RINGS FOR BRUSHES. THE CARRIER MEMBERS ARE FORMED OF TWO PARALLEL RODS OF INSULATING MATERIAL, BOTH MOUNTED TO TURN AROUND THE AXIS OF THE CENTER MEMBERS ARE ROD CARRIERS A NUMBER OF MOVABLE CONNECTING CONTACTS AND A CORRESPONDING NUMBER OF SLIP RINGS. THE TWO RODS ARE POSITIONED INSIDE THE SLIP RINGS SO THAT THEY CAN BE PIVOTED STEPWISE IN RELATION TO EACH OTHER THROUGH SUBSTANTIAL ANGLES.

D R A W I N G

公开(公告)号：US3720998A

公开(公告)日：1973-03-20

申请号：US3720998D

申请日：1971-05-06

Applicant: ASEA AB

Inventor： MALM A ,  FRANSSON J

IPC: H01R43/06 ,  H01R43/00

CPC classification number: H01R43/06 ,  Y10T29/49011

Abstract: Commutator segments are formed by hydrostatically extruding a billet having a core of aluminum or aluminum alloy and a tubular copper or copper alloy casing through a die of such shape that a thin strip is produced. This strip, either during extending or by rolling after extrusion, is given a shape which is thinner in the center than at the edges. The strip is cut longitudinally along its central axis and cut to suitable lengths.

Abstract translation: 通过将具有铝或铝合金芯体和管状铜或铜合金外壳的坯料通过产生薄带状的模具进行流体静力挤出而形成换向器段。 无论是在挤出时延伸还是通过轧制，该条带都具有比在边缘处更薄的形状。 条带沿其中心轴纵向切割并切割成合适的长度。

公开(公告)号：US3713971A

公开(公告)日：1973-01-30

申请号：US3713971D

申请日：1969-12-01

Applicant: ASEA AB

Inventor： VAN SANTEN A ,  SODERGARD B

IPC: G21C7/14 ,  G21C1/08 ,  G21C3/30 ,  G21C3/326 ,  G21C3/344 ,  G21C5/00 ,  G21C7/10 ,  G21C7/12 ,  G21C19/115 ,  G21C15/00

CPC classification number: G21C3/326 ,  G21C1/08 ,  G21C3/344 ,  G21C7/10 ,  G21C7/12 ,  G21C19/115 ,  G21Y2002/304 ,  G21Y2004/30 ,  Y02E30/38 ,  Y02E30/39

Abstract: A nuclear reactor includes a reactor core and a pressure vessel surrounding the reactor core. A plurality of tubes pass through the bottom part of the vessel and extend towards the core. These tubes have upper ends forming guide tubes for control rods. The core is formed of a plurality of core units each comprising a fuel assembly and a rod movable in one of the control rod guide tubes. The fuel assemblies are substantially polygonal in cross section and are arranged in a polygonal lattice. Each of the fuel assemblies rests on a separate control rod guide tube. The fuel assemblies are arranged close together with at most only a small gap between them and are laterally supported by the adjacent fuel assemblies and the control rod guide tubes.

Abstract translation: 核反应堆包括反应堆堆芯和围绕反应堆堆芯的压力容器。 多个管穿过容器的底部并朝着芯延伸。 这些管具有用于控制棒的上端形成导向管。 芯由多个芯单元形成，每个芯单元包括可在一个控制杆导管中移动的燃料组件和杆。 燃料组件的横截面基本上是多边形，并且以多角形格架布置。 每个燃料组件搁置在单独的控制杆导管上。 燃料组件最靠近地布置在它们之间的最小的间隙处，并且被相邻的燃料组件和控制杆导向管横向支撑。