公开(公告)号：US1079994A

公开(公告)日：1913-12-02

申请号：US1911648453

申请日：1911-09-09

Applicant: ASEA AB

Inventor： SCHRAGE HIDDE KLAAS

CPC classification number: H02K17/28

公开(公告)号：US3930199A

公开(公告)日：1975-12-30

申请号：US53778274

申请日：1974-12-31

Applicant: ASEA AB

Inventor： VALIS JAROSLAV

IPC: G01P3/489 ,  G01R23/10 ,  G01R23/02

CPC classification number: G01R23/10 ,  G01P3/489

Abstract: An arrangement for measuring frequency includes a counter unit and two multipliers connected in series with each other to the counter unit. A sensing unit senses each pulse in an unknown pulse train, the frequency of which is to be determined. The multipliers form a second pulse train, the frequency of which is proportional to the square of the content of the counter unit. The counter unit reduces its content by a predetermined amount for each pulse in the second pulse train. The sensing unit delivers a third pulse train to the counter unit, which causes the counter unit to preset its content to a predetermined maximum quantity. The content of the counter unit at the time of each pulse in the first pulse train indicates the frequency of the first pulse train.

Abstract translation: 用于测量频率的装置包括计数器单元和彼此串联连接的两个乘法器到计数器单元。 感测单元感测未知脉冲串中的每个脉冲，其频率将被确定。 乘法器形成第二脉冲序列，其频率与计数器单元的内容的平方成比例。 计数器单元将第二脉冲列中的每个脉冲的内容减少预定量。 感测单元将第三脉冲串传送到计数器单元，这使得计数器单元将其内容预设为预定的最大量。 第一脉冲列中的每个脉冲时的计数器单元的内容表示第一脉冲序列的频率。

公开(公告)号：US3928798A

公开(公告)日：1975-12-23

申请号：US51262474

申请日：1974-10-07

Applicant: ASEA AB

Inventor： VALIS JAROSLAV

IPC: G01P3/489 ,  G01R23/10 ,  G01R23/02

CPC classification number: G01P3/489 ,  G01R23/10

Abstract: An arrangement for frequency/digital conversion, particularly for digital revolution and speed measuring, includes a clock unit, a control unit, and a counter unit. The clock unit provides a pulse train with a constant frequency. A multiplying unit is provided which gives a second pulse train, the frequency of which is dependent on the product of the constant frequency and the latest maximum value of the contents of the counter unit. The contents of the counter unit are reduced by a first quantity upon each pulse of the second pulse train. Another unit is arranged to supply the control unit with a third pulse train with an unknown frequency. The control unit emits a control signal to the counter unit for each pulse in the third pulse train. The counter unit increases its contents by a second quantity at the occurrence of such control signal. The second quantity is greater than or equal to the first quantity. After each such addition, the contents of the counter unit reach a new maximum value which constitutes a digital representation of the frequency of the second pulse train.

Abstract translation: 用于频率/数字转换的装置，特别是用于数字转速和速度测量的装置包括时钟单元，控制单元和计数器单元。 时钟单元提供具有恒定频率的脉冲串。 提供一个乘法单元，其给出第二脉冲串，其频率取决于计数器单元的内容的恒定频率和最新最大值的乘积。 在第二脉冲串的每个脉冲上，计数器单元的内容减少第一量。 另一个单元被布置成向控制单元提供具有未知频率的第三脉冲串。 控制单元对第三脉冲串中的每个脉冲向计数器单元发出控制信号。 在发生这种控制信号时，计数器单元将其内容增加第二数量。 第二数量大于或等于第一数量。 在每次这样的添加之后，计数器单元的内容达到新的最大值，其构成第二脉冲序列的频率的数字表示。

公开(公告)号：US3904391A

公开(公告)日：1975-09-09

申请号：US53833566

申请日：1966-03-29

Applicant: ASEA AB

Inventor： LINDSTROM OLLE ,  LUNDBLAD ERIK

IPC: B24D18/00 ,  C09K3/14 ,  C23C5/00

CPC classification number: C09K3/1445 ,  B24D18/00

Abstract: Diamond grains coated with a metallic coating of a thickness of 0.5-25 microns are embedded in a synthetic resin to form a grinding material.

Abstract translation: 将涂覆有厚度为0.5-25微米的金属涂层的金刚石颗粒嵌入合成树脂中以形成研磨材料。

公开(公告)号：US3898124A

公开(公告)日：1975-08-05

申请号：US46806174

申请日：1974-05-07

Applicant: ASEA AB

Inventor： OLSON TORBJORN

IPC: D21C3/22 ,  D21C7/12

CPC classification number: D21C3/228

Abstract: In a continuous digester which has a boiler with a rotatable bottom scraper and a chip and lye inflow at the top as well as a wash inflow into and a pulp outflow from the boiler, the concentration at the pulp outflow is measured and is used to control the rotation of the scraper so as to maintain a constant concentration of the outgoing pulp. A flow meter at the pulp outflow controls a throttle valve to regulate the outflow. The liquid in the top of the digester is measured and is used to control the devices which feed chips to the digester. Measurement of the pressure in the digester is used to control the flow of black liquor at the chip and lye inflow. The chips are fed in by a chip screw which in turn is fed by a segmental wheel, and the speeds of the chip screw and segmental wheel are maintained proportional to each other.

Abstract translation: 在具有可旋转底部刮板的锅炉和顶部的碎屑和碱液流入以及来自锅炉的洗涤流入和纸浆流出的连续蒸煮器中，测量纸浆流出物处的浓度并用于控制 刮刀的旋转以保持输出纸浆的恒定浓度。 纸浆出口处的流量计控制节流阀以调节流出。 测量消化器顶部的液体，并用于控制向消化器供料碎屑的装置。 测量蒸煮器中的压力用于控制芯片中黑液的流动和碱液流入。 芯片由切屑螺丝进给，切屑螺钉又由分段轮进给，切屑螺钉和分段轮的速度保持彼此成比例。

公开(公告)号：US3896406A

公开(公告)日：1975-07-22

申请号：US49511274

申请日：1974-08-06

Applicant: ASEA AB

Inventor： ANDERSSON OLLE ,  ERICSSON ELLERTH

IPC: H01F27/245 ,  H01F27/36 ,  H01F15/04

CPC classification number: H01F27/245 ,  H01F27/36

Abstract: In order to prevent the occurrence of glow discharge at sharp corners and edges of core legs for transformers, reactors and the like which are formed of a plurality of sheets, tape is wound around the bundle of sheets, the tape being formed of a backing of glass fiber or the like having high mechanical strength and impregnated with an electrically semi-conducting and thermosetting material, the successive turns of tape overlapping, the winding being under high tension, the screen after heat treatment and curing being quite stiff and having good mechanical and electrical contact with the core leg along its longitudinal edges.

公开(公告)号：US3885082A

公开(公告)日：1975-05-20

申请号：US46169374

申请日：1974-04-17

Applicant: ASEA AB

Inventor： HANAS BERTIL

IPC: F27D3/18 ,  H05B7/02 ,  F27D1/00

CPC classification number: H05B7/02 ,  F27D3/18

Abstract: An electric arc furnace has a side wall lining with at least one portion bombarded by the arc flare from one of the furnace arcing electrodes. A magnet is positioned on the outside of this portion and ferro-magnetic particles are fed to its inside, the magnet forming a magnetic flux field traveling through this lining portion and on the latter''s inside magnetically holding the particles to form an arc flare shield protecting this portion''s inside from the arc flare. As the particles heat to their Curie point temperatures, they become non-magnetic and fall into the melt of the furnace, a supply of fresh and relatively cold particles being fed to the flux field as required to maintain the efectiveness of the arc flare shield formed by the particles. The wall thickness of this portion is reduced from its outside inwardly to form a recess in its outside and in which the magnet is positioned to reduce the distance the flux field must travel to the inside to hold the ferro-magnetic particles. Between the magnet and this thin wall portion a water cooled plate is positioned to cool the thin wall portion of the lining. In this way the travel path of the magnetic flux is reduced in length without risking possible overheating of the lining, permitting the use of a less powerful magnet construction, this being an electromagnet and requiring electric solenoids, a core or cores with pole pieces and a suitable mounting arrangement. A temperature measurement sensor is installed in the thin wall of the lining portion protected by the flare shield, and equipment is provided for controlling the feed rate of the ferro-magnetic particles which form the shield, automatically in response to the temperature measurements obtained from this sensor, this assuring maintenance of the effectiveness of the shield. The water-cooled plate internally has magnetic pole piece extensions for the pole pieces for the electromagnet core or cores and which form magnetic paths for the flux which must travel through the watercooled box.

公开(公告)号：US3880376A

公开(公告)日：1975-04-29

申请号：US33238173

申请日：1973-02-14

Applicant: ASEA AB

Inventor： SVENSSON LENNART

IPC: B21C35/02 ,  B21C47/04 ,  B65H18/10 ,  B65H54/76 ,  B65H54/80

CPC classification number: B21C35/02 ,  B21C47/045 ,  B65H54/80

Abstract: For coiling a strip-formed material issuing from an extruder, a hollow drum is provided against the inner wall of which the extruded material is fed and which rotates at a speed substantially the same as the speed of the extruded material. Within the outer drum is an inner drum which is stationary or rotates independently of the outer drum. When the supply of material suddenly ceases, the material coils around the second drum without being subjected to damaging strains.

Abstract translation: 为了卷绕从挤出机发出的条形材料，中空鼓被提供抵靠挤压材料的内壁，并且以与挤出材料的速度基本相同的速度旋转。 在外鼓内部是独立于外鼓静止或旋转的内鼓。 当材料供应突然停止时，材料在第二个滚筒周围卷绕而不会受到破坏性的应变。

公开(公告)号：US3878492A

公开(公告)日：1975-04-15

申请号：US50344274

申请日：1974-09-05

Applicant: ASEA AB

Inventor： TJERNSTEOM OVE

IPC: H01F27/10 ,  H01F27/28

CPC classification number: H01F27/2876 ,  H01F27/10 ,  H01F27/2871

Abstract: The invention relates to a liquid-cooled transformer winding, preferably a disc winding, of the type in which the coolant is led through cooling tubes which are arranged in the winding simultaneously with the manufacture of the winding. The cooling tubes are arranged in only some of the winding discs, called cooling discs, and these cooling discs are preferably evenly distributed within the winding.

Abstract translation: 本发明涉及一种液冷变压器绕组，优选地是盘式绕组，其中冷却剂被引导通过与绕组的制造同时布置在绕组中的冷却管。 冷却管仅布置在称为冷却盘的一些卷绕盘中，并且这些冷却盘优选地均匀分布在绕组内。

公开(公告)号：US3878448A

公开(公告)日：1975-04-15

申请号：US36710073

申请日：1973-06-05

Applicant: ASEA AB

Inventor： JACKSON PER-OLOF ,  JUHLIN LARS-ERIK ,  OSTLUND BRENT

IPC: H02M1/08 ,  H02M1/088 ,  H02M7/155 ,  H02M7/19

CPC classification number: H02M1/088 ,  H02M7/19

Abstract: A thyristor rectifier for high voltages includes a number of seriesconnected thyristors each of which has a control device. A control circuit for the whole rectifier includes a control pulse transmitter and a signal emitter for each thyristor which emits an indicating signal when the voltage in the conducting direction of the relevant thyristor reaches a predetermined value. The control circuit includes an input circuit to which signals for ignition of the whole thyristor rectifier are connected. The signal emitters and input circuit are connected to an AND-gate. The different signal emitters are connected to the AND-gate by an OR-gate. The OR-gate is connected to the AND-gate by a flip-flop and the output side of the AND-gate is connected to the flip-flop in such a way that a signal from the OR-gate energizes the flipflop while a signal from the AND-gate switches it off.

Abstract translation: 用于高电压的晶闸管整流器包括多个具有控制装置的串联晶闸管。 整个整流器的控制电路包括控制脉冲发射器和每个晶闸管的信号发射器，当相关晶闸管的导通方向上的电压达到预定值时发出指示信号。 控制电路包括连接整个可控硅整流器的点火信号的输入电路。 信号发射器和输入电路连接到与门。 不同的信号发射器通过或门连接到与门。 或门通过触发器连接到与门，并且AND门的输出侧以触发器的方式连接到触发器，使得来自或门的信号激励触发器同时 来自与门的信号将其切断。