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    • 2. 发明授权
    • Control apparatus for a direct current arc furnace
    • 直流电弧炉控制装置
    • US4691325A
    • 1987-09-01
    • US831658
    • 1986-02-20
    • Claude Boisdon
    • Claude Boisdon
    • H05B7/144H05B7/148
    • H05B7/148Y02P10/256Y02P10/259
    • The invention concerns a control apparatus for an arc furnace (1) comprising at least one electrode (2), and powered with direct current from an alternating current electric power source (4), through the intermediary of a controlled-rectifier converter (3).According to the invention, this apparatus includes a loop (24) for rapid control of the reactive energy drawn from the alternating current power source (4), and a circuit (15) for limitation of the maximum intensity of the direct current flowing in the electrode (2). Preferably, the rapid control of the reactive energy is obtained by holding essentially constant the product of the intensity in the source (4) and the sine of the dephasing angle. It includes in addition a loop (13) for slow control generating a reference signal of the reactive energy applied to the said rapid control loop (24), and limiting the variation of the reactive energy.
    • 本发明涉及一种用于电弧炉(1)的控制装置,其包括至少一个电极(2),并通过来自交流电源(4)的直流电通过受控整流器转换器(3)的中间供电, 。 根据本发明,该装置包括用于快速控制从交流电源(4)抽取的无功电能的回路(24),以及用于限制流入所述交流电源(4)中的直流电流的最大强度的电路(15) 电极(2)。 优选地,通过将​​源(4)中的强度和去相位角的正弦的乘积基本上保持恒定来获得无功电能的快速控制。 此外,它还包括用于缓慢控制的环路(13),其产生施加到所述快速控制回路(24)的无功电能的参考信号,并且限制无功电能的变化。
    • 3. 发明授权
    • Precalibrated element for securing and locking semiconductors and heat
sinks arranged in alternating rows
    • 用于固定和锁定以交替行排列的半导体和散热器的预校准元件
    • US4636917A
    • 1987-01-13
    • US640394
    • 1984-08-13
    • Robert Jouanny
    • Robert Jouanny
    • H01L23/40H01L25/11H05K7/20
    • H01L23/4012H01L25/117H01L2924/0002
    • In electrical apparatus of the type having a column of stacked semiconductors and interposed heat sinks mounted between a pair of end plates, a precalibrated clamping element is provided for applying a predetermined clamping force to one end of the column to secure the column between the end plates. A hollow cylindrical body of the clamping element threads into one of the end plates and houses a spring which has been placed in precalibrated compression by a press. The spring is retained in a precalibrated state between a shoulder portion of a piston within the body and a fixed inner surface of the body. A cap is secured to an end of the body and is positioned to abut the shoulder to retain the spring in the precalibrated state. To apply the predetermined force to the column, the cylindrical body is threaded toward the second end plate with a head portion of the piston supporting the column to achieve a specific positional relationship between the body and the piston in which the spring exerts the predetermined force on the piston shoulder.
    • 在具有安装在一对端板之间的堆叠半导体柱和插入式散热器的类型的电气设备中,提供预定压夹紧元件以将预定的夹紧力施加到柱的一端以将柱固定在端板之间 。 夹紧元件的中空圆柱形主体螺纹连接到一个端板中,并容纳一个弹簧,该弹簧已经被压力机预先压紧。 弹簧保持在体内的活塞的肩部与主体的固定内表面之间的预校准状态。 帽被固定到身体的端部并且被定位成邻接肩部以将弹簧保持在预校准状态。 为了将预定的力施加到柱上,圆柱体被带到第二端板,活塞的头部支撑柱,以实现主体和活塞之间的特定位置关系,其中弹簧施加预定的力 活塞肩。
    • 6. 发明授权
    • Control circuit of a synchronous motor with two induction windings
    • 具有两个感应绕组的同步电机的控制电路
    • US4518908A
    • 1985-05-21
    • US531772
    • 1983-09-13
    • Albert Wiart
    • Albert Wiart
    • H02P1/48H02M5/45H02P1/46H02P25/02H02P27/06H02P5/40
    • H02P1/46H02M5/4505H02P25/024
    • A control circuit of a synchronous motor with two induction windings, including an electrical power supply assembly (5), two oscillators (2,3) whose outputs are connected respectively to the windings of the motor (1), an intermediary circuit (4), connected on one side to the power supply and on the other to the oscillators, and a central unit for control of the thyristors.The electrical power supply assembly (5) delivers a current of a given unique polarity, and has its output terminals connected by means of a freewheel branch including at least one freewheel diode (6) whose cathode is connected to the positive terminal. The intermediary circuit includes, in combination:a branch composed of two thyristors (10,11) in series, between them connecting the input terminals of the intermediary circuit (4), which are connected respectively to one of the input terminals of the oscillators, in a manner such that the terminals chosen are of opposite polarity,a condenser (14) connected on one side to the junction point of the two thyristors (10,11) of this branch, and on the other side to the two other input terminal of opposite polarity of the oscillators (2,3),two inductances (12,13) of equal value presenting a high coupling factor by mutual induction, respectively connected in series with one of the input terminals of the oscillators (2,3), the terminals chosen being of opposite polarity. Application to railway traction motors.
    • 具有两个感应绕组的同步电动机的控制电路,包括电源组件(5),其输出分别连接到电动机(1)的绕组的两个振荡器(2,3),中间电路(4) ,一侧连接到电源,另一侧连接到振荡器,以及用于控制晶闸管的中央单元。 电源组件(5)传送给定唯一极性的电流,并且其输出端通过续流分支连接,该续流分支包括至少一个其正极与正极连接的续流二极管(6)。 中间电路组合包括:串联连接两个晶闸管(10,11)的分支,它们分别连接中间电路(4)的输入端,它们分别连接到振荡器的一个输入端, 以使得所选择的端子具有相反极性的方式,将一个连接在该分支的两个晶闸管(10,11)的连接点的一侧上的冷凝器(14)连接到另一个输入端 振荡器(2,3)的相反极性的两个相等值的电感(12,13)分别与振荡器(2,3)的一个输入端串联连接,通过相互感应呈现高耦合系数, 所选择的端子具有相反的极性。 适用于铁路牵引电机。
    • 8. 发明授权
    • Component for connecting a primary pump and a delivery pipe in a breeder
reactor of the swimming-pool type
    • 用于在游泳池类型的增殖反应器中连接主泵和输送管的部件
    • US4505872A
    • 1985-03-19
    • US346401
    • 1982-02-08
    • N. Delloye
    • N. Delloye
    • F04D7/08G21C1/03G21C15/02G21D1/04
    • G21C1/03Y02E30/34Y02E30/35
    • The present invention pertains to a means of connecting a primary pump (intended for sodium or the like) and the delivery pipe within a breeder reactor of the swimming-pool type, permitting limited movement of the pump and the pipe in relation to one another to occur, while also maintaining adequate sealing between low pressure areas and high pressure areas within said pump. The connecting component consists of a cylindrical sleeve (11) which, in a resting position, is situated along the same axis (1) as the delivery pipe for the pump. A cylindrical guide (3) which is fastened to the pump is fitted into the aforementioned pipe, and a sealing joint (13) is situated between the sleeve (11) and the guide (3). There is also a horizontal annular collar (12) which is fastened to the aforementioned sleeve (11), resting upon an annular rim (5) situated upon the upper flange (7) of the pipe (4). The lower surface of the collar (12) contains sockets (13') which are arranged so as to constitute a hydrostatic thrust block.
    • 本发明涉及一种在游泳池类型的增殖反应器内连接初级泵(用于钠等)和输送管的装置,允许泵和管道相对于彼此有限的运动到 同时还在所述泵内的低压区域和高压区域之间保持足够的密封。 连接部件由圆柱形套筒(11)组成,该套筒在静止位置沿与泵的输送管相同的轴线(1)设置。 紧固在泵上的圆柱形引导件(3)装配到上述管中,密封接头(13)位于套筒(11)和引导件(3)之间。 还有一个水平的环形套圈(12),其紧固到上述套筒(11)上,放置在位于管道(4)的上凸缘(7)上的环形边缘(5)上。 轴环(12)的下表面包含插座(13'),其布置成构成静水推力块。
    • 9. 发明授权
    • Procedure and device for rolling metals without stress
    • 无压力滚动金属的方法和装置
    • US4408470A
    • 1983-10-11
    • US266916
    • 1981-05-26
    • Jacques FromontMarcel Plancon
    • Jacques FromontMarcel Plancon
    • B21B37/48B21B1/12B21B37/52B21B37/00
    • B21B37/52B21B1/12B21B2275/04B21B2275/12
    • The invention involves a procedure having three key stages: In the first stage, just prior to the introduction of the metal into stand (n+1), the value of the rolling torque in stand (n) is determined and recorded. Then, in the second stage, when the metal is introduced into stand (n+1), the value of the rolling torque in stand (n) is held constant by controlling the speed regulator of stand (n) up to the time the metal is introduced into stand (n+2). Finally, in the third stage, which continues until the rolling operation in stand (n) has been completed, the voluminal flow of the metal is held constant at the line of each stand by applying a multiplier coefficient to the signal representing the ratio between the speeds of two successive stands.
    • 本发明涉及具有三个关键阶段的步骤:在第一阶段,在将金属引入支架(n + 1)之前,确定并记录支架(n)中的滚动转矩的值。 然后,在第二阶段中,当金属被引入支架(n + 1)时,通过将支架(n)的调速器控制到金属(n)的时间,将支架(n)中的滚动转矩的值保持不变 被引入支架(n + 2)。 最后,直到第(n)段中的轧制操作已经完成的第三阶段,通过对代表每个立柱之间的比率的信号应用乘数系数,使金属的体积流量保持恒定 两个连续站的速度。