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    Recurrent arc heating process
    13.
    发明授权
    Recurrent arc heating process 失效
    电流加热过程

    公开(公告)号：US3629553A

    公开(公告)日：1971-12-21

    申请号：US3629553D

    申请日：1969-01-10

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： FEY MAURICE G ,  WOLF CHARLES B ,  AZINGER FREDERICK A JR ,  KEMENY GEORGE A

    IPC: H05B7/18 ,  H05H1/48 ,  H05H1/50

    CPC classification number: H05B7/185 ,  H05H1/48 ,  H05H1/50

    Abstract: A process for heating gas or fluid which comprises passing the gas or fluid through a gap between electrodes having an arc therebetween at a very high velocity while a system voltage is continuously maintained sufficient to cause breakdown at the gap. The high-velocity gas elongates the arc until the arc voltage required for electrical conduction exceeds the breakdown voltage of the gap whereupon sparkover occurs in the gap, the arc being thereafter elongated again by the gas passing through the gap until the voltage required to sustain arcing exceeds the breakdown voltage of the gap, the cycle of gap breakdown and elongation being repeated over and over again. The greatly extended arc provides for more efficient heating of the gas, better mixing and a more uniform temperature to which the gas is heated.

    Method of constructing parts suitable for high heat flux removal in arc heaters
    14.
    发明授权
    Method of constructing parts suitable for high heat flux removal in arc heaters 失效
    构造适用于弧加热器中高热通量去除的部件的方法

    公开(公告)号：US3601884A

    公开(公告)日：1971-08-31

    申请号：US3601884D

    申请日：1968-05-20

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： KEMENY GEORGE A

    IPC: B23K20/00 ,  F28F7/00 ,  B23K31/02

    CPC classification number: B23K20/00 ,  F28F7/00 ,  Y10S29/044

    Abstract: A component to have a passageway or passageways therein, for example for the flow of cooling fluid, is formed in two or more parts which fit closely together so that one surface of one part is adjacent a surface of the other part. At least one of the mating surfaces has grooves or channels therein which are to form the passageways for the cooling fluid. Thereafter the channels or grooves are evacuated and a vacuum seal provided. According to one process or method the parts have extending lips which are welded or otherwise joined together to form a seal for the evacuated channels. According to another method or process, the two parts after being fitted together are enclosed in a thin walled metal jacket of resilient material and the jacket evacuated and sealed. The sealed parts are then subjected for a suitable time and at a suitable temperature, as by placing in an autoclave, to a pressure in excess of that required to force the mating surfaces into intimate contact and sufficient to produce some deformation, with a resulting good bond but without so greatly reducing the cross-sectional area of the grooves or channels as to make them unsuitable for use as fluid flow passageways. One process aforedescribed is also a process for healing internal flaws. After the bonding is complete, the assembly is cooled and removed from the jacket, or the lips machined off, according to the process employed. An additional step may include annealing to produce further grain growth across the boundary between the parts joined together. In a further process, the passageway is filled with an inert gas at low pressure during the autoclave run. In an additional process, the passageway contains a solid or fluid ''''getter'''' material. In a still further process the passageway or passageways are continually pumped out while the assembled parts are being heated and subjected to external pressure.

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