Power supply apparatus
    1.
    发明授权
    Power supply apparatus 失效
    电源设备

    公开(公告)号:US4787023A

    公开(公告)日:1988-11-22

    申请号:US59589

    申请日:1987-06-08

    CPC分类号: H02M5/2573 H02M7/162

    摘要: A power supply apparatus, in which the three phases of an alternating-current main are connected each through rectifier elements connected in antiparallel to the primary winding of a three-phase transformer. The secondary windings of this transformer are connected through rectifiers to a load device, such as an electron beam gun or other such device which produces short-circuits while in operation. Measuring sensors are provided on the primary AC side which, in the presence of an excess current on the primary AC side, block controlled rectifier elements. The blocking takes place very rapidly because GTO thyristors are used as rectifier elements. The decay of the magnetic energy in the transformer is achieved by the fact that the primary side of this transformer is connected in delta.

    摘要翻译: 一种电源装置,其中交流主机的三相通过与三相变压器的初级绕组反向并联连接的整流元件连接。 该变压器的次级绕组通过整流器连接到负载装置,例如电子束枪或其他在运行时产生短路的装置。 测量传感器设置在主交流侧,在主交流侧存在过电流的情况下,可控整流元件。 由于使用GTO晶闸管作为整流元件,阻塞发生得非常快。 变压器磁能的衰减是通过这个变压器的初级侧以三角形连接的事实来实现的。

    Manufacturing method for hollow cast product with bottom
    2.
    发明授权
    Manufacturing method for hollow cast product with bottom 失效
    具有底部的中空铸造产品的制造方法

    公开(公告)号:US4785871A

    公开(公告)日:1988-11-22

    申请号:US112963

    申请日:1987-10-27

    CPC分类号: B22D15/04 B22D27/04

    摘要: A static casting method for a hollow cast product using a mold with bottom comprising a top lid, a core and an outer mold section, the core being attached to the top lid and disposed inside the outer mold section. The outer mold section includes a lateral mold section and a lower mold section. The lateral mold section is formed at its inner peripheral wall portion with a composite cooling section by stacking chiller blocks and interposing therebetween refractory sands and at its outer wall portion with refractory sands. Cooling pipes include first and second pipes. A first pipe extends longitudinally through the refractory sands at the outer wall portion and a second pipe extends longitudinally through the inner wall portion in contact with at least a part of each of the chiller blocks, the first and second pipes being connected at their lower portions through the bend portion. The chiller blocks are cooled by water flowing in the second pipes. The entire casting cavity is first filled with molten metal. Then cooling water is passed through the cooling pipes until solidification of the metal is complete. Thereafter the supply of water is stopped and water remaining in the pipes is discharged.

    摘要翻译: 一种用于中空铸造产品的静态铸造方法,其使用具有顶盖,芯部和外部模具部分的底部的模具,所述芯部附接到顶盖并且设置在外部模具部分内部。 外模具部分包括侧模部分和下模部分。 横向模具部分在其内周壁部分上形成有复合冷却部分,通过堆叠冷却器块并将其夹在耐火砂之间,并在其外壁部分处形成耐火砂。 冷却管道包括第一和第二管道。 第一管在外壁部分纵向延伸通过耐火砂,第二管纵向延伸穿过每个冷却块的至少一部分与内壁部分接触,第一和第二管在其下部连接 通过弯曲部分。 冷水机组由在第二管道中流动的水冷却。 整个铸造腔首先被熔融金属填充。 然后将冷却水通过冷却管直到金属的固化完成。 此后,停止供水并排出残留在管道中的水。

    Process for the preparation of 2-hydroxycarbazoles
    4.
    发明授权
    Process for the preparation of 2-hydroxycarbazoles 失效
    2-羟基咔唑的制备方法

    公开(公告)号:US4137238A

    公开(公告)日:1979-01-30

    申请号:US883980

    申请日:1978-03-06

    IPC分类号: C07D209/88

    CPC分类号: C07D209/88

    摘要: A process for the preparation of a 2-hydroxycarbazole of the formula ##STR1## wherein R.sup.1 represents hydrogen, halogen or an optionally substituted alkyl, aryl or alkoxy radicalWhich comprises contacting a diphenylamine of the formula ##STR2## wherein R.sup.1 has the above-described meaning andR.sup.2 represents halogenWith a base at an elevated temperature in water and/or an organic solvent or diluent.

    摘要翻译: (I)的2-羟基咔唑的方法,其中R 1表示氢,卤素或任选取代的烷基,芳基或烷氧基,其包含连接式(II)的二苯胺,其中 R1具有上述含义,R 2表示在水和/或有机溶剂或稀释液中的高温下的碱的卤素。

    Circuit arrangement for supplying electrode melting furnaces
    6.
    发明授权
    Circuit arrangement for supplying electrode melting furnaces 失效
    电极熔化炉供电电路

    公开(公告)号:US3952139A

    公开(公告)日:1976-04-20

    申请号:US534831

    申请日:1974-12-20

    CPC分类号: G05F1/44 C22B9/18 H05B3/0023

    摘要: The invention concerns a converter arrangement for electrode melting furnaces, particularly for electric slag remelting of metals. A current regulator in the form of a PI controller is associated with the converter arrangement. The former is influenced by an actual current value, a reference current value, and additionally, by a control quantity. The control quantity replaces the current regulation of the regulator by a voltage control in dependence on periodic or aperiodic conditions which may be due to operational causes or to trouble and interfere with the melting process in the furnace. More particularly, for the duration of such conditions, the control quantity causes the output voltage of the regulator, which voltage acts on the control unit feeding the converter, to be limited upward to an adjustable value.

    摘要翻译: 本发明涉及用于电极熔化炉的转换器装置,特别是用于金属的电渣重熔。 PI控制器形式的电流调节器与转换器装置相关联。 前者受实际电流值,参考电流值以及控制量的影响。 控制量通过电压控制取代调节器的电流调节,这取决于可能由操作原因引起的周期性或非周期性状况,或者是故障并干扰炉中的熔化过程。 更具体地说,在这种条件的持续时间内,控制量使调节器的输出电压(该电压作用在馈送转换器的控制单元上)被限制在可调整的值上。

    Brassica juncea lines bearing endogenous edible oils
    7.
    发明授权
    Brassica juncea lines bearing endogenous edible oils 失效
    含有内源性食用油的芥菜系

    公开(公告)号:US06787686B2

    公开(公告)日:2004-09-07

    申请号:US09977771

    申请日:2001-10-15

    IPC分类号: A01H500

    CPC分类号: A23D9/00 A01H5/10

    摘要: Novel lines of Brassica juncea yield an edible oil that has properties similar to canola oil. More specifically, the oil has an oleic acid content of at least 55% by weight, a linoleic acid content of less than 25% by weight, a linolenic acid content of less than 14% by weight, a erucic acid content of less than 1% by weight, a palmitic acid content of less than 6% by weight, a stearic acid content of less than 2.5% by weight, and a total saturated acid content of less than 7.1% by weight. The novel lines of B. juncea plant have a lineage that includes both lines J90-3450 and J90-4316, these being known lines of B. juncea, and may be formed by conventional cross fertilization or other means. The novel lines can be grown in harsher environments than conventional canola species and are high-yielding and disease-resistant.

    摘要翻译: 新鲜的芥菜系产生具有类似于油菜油的性质的食用油。 更具体地说,油的油酸含量为至少55重量%,亚油酸含量小于25重量%,亚麻酸含量小于14重量%,芥酸含量小于1 重量%,棕榈酸含量小于6重量%,硬脂酸含量小于2.5重量%,总饱和酸含量小于7.1重量%。 B. juncea植物的新品系具有包括J90-3450和J90-4316两种品系的品系,这些品系是B. juncea的已知品系,并且可以通过常规交叉施肥或其他方式形成。 这些新品系可以在比传统油菜种类更苛刻的环境中生长,并且具有高产量和抗病性。

    Measurement sensor for the detection of temperatures in metal or alloy
melts
    9.
    发明授权
    Measurement sensor for the detection of temperatures in metal or alloy melts 失效
    用于检测金属或合金熔体温度的测量传感器

    公开(公告)号:US4995733A

    公开(公告)日:1991-02-26

    申请号:US453101

    申请日:1989-12-13

    IPC分类号: G01K1/10

    CPC分类号: G01K1/105

    摘要: The invention concerns a measurement sensor for the detection of temperatures in metal or alloy melts. This measurement sensor consists of a thermocouple (41) surrounded by a ceramic capillary (24) which is closed at its end by means of an adhesive (45) or the like. This measurement sensor is directly, i.e. without further sheathing, introduced into the melt (FIG. 3a).

    摘要翻译: 本发明涉及用于检测金属或合金熔体中的温度的测量传感器。 该测量传感器包括由陶瓷毛细管(24)包围的热电偶(41),陶瓷毛细管(24)的端部通过粘合剂(45)等闭合。 该测量传感器直接地,即没有进一步的护套,被引入到熔体中(图3a)。

    Apparatus for controlling the operation of tipping a melting crucible
    10.
    发明授权
    Apparatus for controlling the operation of tipping a melting crucible 失效
    用于控制倾翻熔化坩埚的操作的装置

    公开(公告)号:US4823263A

    公开(公告)日:1989-04-18

    申请号:US885455

    申请日:1986-07-14

    CPC分类号: B22D41/06 B22D37/00

    摘要: In automatic melting crucible tipping it is important that, starting from a certain angular position, the melting crucible (1) is tipped according to a predetermined model until emptying is complete. This model can be obtained, for example, by the so-called teach-in process and can be stored in an analog or digital memory (89). In order to prevent abrupt movement of the crucible (1) when the molten material touches the pouring lip (3) of the crucible (1) when the pour-lip angle has been reached, according to the invention a correction arrangement (108, 109, 37) is provided which enables the tipping process to proceed continuously and without abrupt movements even in the case of different pour-lip angles.

    摘要翻译: 在自动熔化坩埚倾翻中,重要的是,从特定角度位置开始,熔化坩埚(1)根据预定模型倾倒,直到排空完成。 该模型可以例如通过所谓的教导过程获得,并且可以存储在模拟或数字存储器(89)中。 为了防止当达到倾角时熔融材料接触坩埚(1)的倾倒唇(3)时坩埚(1)突然移动,根据本发明,校正装置(108,109 ,37),这使得即使在不同倾角的情况下,倾翻过程也能够连续地进行并且没有突然的移动。