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    • 2. 发明授权
    • Control valve and method
    • 控制阀和方法
    • US3841202A
    • 1974-10-15
    • US23646272
    • 1972-03-20
    • COMBUSTION ENG
    • GROVES M
    • G21C7/16F16K41/10G21C9/02F15B11/08F15B13/042
    • F16K41/10G21C9/02Y02E30/40
    • A delay valve particularly well suited for use in nuclear reactor hydraulic control systems and a control method employing the valve are disclosed. The valve includes a bellows attached to a plug member and a high resistance flow path between a first pressure source and the interior of the bellows whereby a predetermined time is required for each filling of the bellows and the accompanying movement of the plug member in a first direction. Fission rate control devices are positioned in response to delay valve operation which is controlled by the application of pressure from second and third sources to the exterior of the bellows in the proper sequence.
    • 公开了一种特别适用于核反应堆液压控制系统的延迟阀和采用该阀的控制方法。 阀包括附接到插塞构件的波纹管和在第一压力源与波纹管内部之间的高阻力流动路径,由此每次填充波纹管时需要预定时间,并且插塞构件在第一 方向。 裂变率控制装置响应于延迟阀操作而定位,其通过以适当的顺序将第二和第三源的压力施加到波纹管的外部来控制。
    • 4. 发明授权
    • Top actuated reactor control system
    • 顶部启动反应器控制系统
    • US3843471A
    • 1974-10-22
    • US21130871
    • 1971-12-23
    • COMBUSTION ENG
    • BEVILACQUA FFLINN WDIETRICH JGROVES M
    • G21C7/16
    • G21C7/16G21Y2002/206G21Y2002/402G21Y2004/30Y02E30/39
    • 1. In a nuclear reactor, the reactor including a pressure vessel with a fuel assembly disposed therein and means for circulating a coolant under pressure through the vessel, the fuel assembly comprising a plurality of fuel elements containing fissionable material, an improved control system comprising: a plurality of guide tubes for movable neutron absorber elements extending through the fuel assembly, said guide tubes terminating within the pressure vessel; upper end filtering means, the upper end of each guide tube being terminated in said upper end fitting means, said upper end fitting means including a tubular extension for each guide tube, the upper end of said tubular extensions defining valve seats; buffer means positioned in the pressure vessel above and axially aligned with each of said end fitting means tubular extensions; tubular hydraulic cylinder defining means extending between the upper end of each of said tubular extensions and said buffer means; actuator piston means disposed for movement in each of said tubular cylinder defining means, each of said actuator piston means having an upper surface cooperating with said buffer means for valving action and a lower surface cooperating with said upper end fitting means defined valve seat to perform a valving action; neutron absorber element means disposed for movement in each of the guide tubes; means mechanically coupling each of said actuator piston means to associated absorber element means whereby the absorber element means may be moved relative to the fuel elements; means located externally of the pressure vessel for generating a control pressure; a plurality of control lines penetrating the pressure vessel, said control lines being commensurate in number with the actuator piston means and extending from said control pressure generating means to respective of said control pressure to the upper surfaces of said actuator piston means; valve means disposed in each of said control lines for selectively applying said control pressure to said hydraulic cylinder defining means through said buffer means to said upper surface of said actuator piston means whereby said absorber elements may be individually adjusted between positions commensurate with full insertion into and full retraction from the fuel assembly; and means for applying the pressure vessel internal coolant pressure to the lower surfaces of said actuator piston means.