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公开(公告)号：US4780591A
公开(公告)日：1988-10-25
申请号：US21958
申请日：1987-03-05
CPC分类号： H05H1/42 , H05H1/3405 , H05H1/36 , H05H2001/3436 , H05H2001/3452 , H05H2001/3478 , H05H2001/3494
摘要： A plasma generating system comprises a plasma gun including a hollow cylindrical anode member, a hollow cylindrical intermediate member electrically isolated from and juxtaposed coaxially with the anode member to form a plasma-forming gas passage through the intermediate member and the anode member, and an axially movable cathode member. The intermediate member comprises tubular segments separated by resilient insulating spacing rings held in compression. Arc radiation is blocked from the spacer rings by meanders in the inter-segment slots and further by ceramic barrier rings. An electric motor or pneumatic piston responsive to a measurement of arc voltage continually adjusts the axial position of the cathode tip relative to the anode nozzle so as to maintain a predetermined arc voltage.
摘要翻译： 一种等离子体发生系统包括等离子体枪，其包括中空圆柱形阳极部件，与阳极部件电气隔离并与其并列的中空圆柱形中间部件，以形成穿过中间部件和阳极部件的等离子体形成气体通道， 可动阴极部件。 中间构件包括由保持压缩的弹性绝缘间隔环分开的管状段。 电弧辐射通过段间隙中的曲折而进一步由隔离环阻挡，并且还通过陶瓷阻挡环阻挡。 响应于电弧电压测量的电动机或气动活塞连续地调节阴极尖端相对于阳极喷嘴的轴向位置，以便保持预定的电弧电压。
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公开(公告)号：US4788408A
公开(公告)日：1988-11-29
申请号：US47757
申请日：1987-05-08
CPC分类号： H05H1/34 , H05H1/28 , H05H2001/3436 , H05H2001/3452 , H05H2001/3494
摘要： An arc plasma generating system includes components for adjusting spacing between the cathode and the anode. A piston affixed to the cathode is slidingly positioned in a cylinder partitioning therein a first chamber and a second chamber. The first chamber is receptive of discharged cooling fluid at reduced pressure. A first valve selectively infuses pressurized control fluid into the second chamber such as to move the piston against the reduced pressure and thereby move the cathode axially in a first direction. A second valve selectively discharges the control fluid from the second chamber such that the reduced pressure in the first chamber moves the piston opposite the first direction. Telescoping tubing affixed between the piston and the end wall of the cylinder is located within the cylinder and conveys cooling fluid to the cathode. A flexible electrical cable connected between the cathode and a source of arc current is located within the cylinder member such as to be cooled by fluid therein.
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