发明授权
- 专利标题： SYSTEM, METHOD AND CUTTERHEAD FOR DRY FULL-AREA DRILLING
- 专利标题（中）： 系统，方法和切割头全切干式钻削
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申请号： EP95909171.1申请日： 1995-02-01
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公开(公告)号： EP0741834B1公开(公告)日： 2000-09-13
- 发明人: HAUGEN, Karl, Thorbjörn , LÖVGREN, Gert, Axel , BROLUND, Stig-Ake , KÄLLVIK, Roland
- 申请人： DISAB Vacuum Technology AB , SANDVIK AKTIEBOLAG
- 申请人地址： Skiffervägen 44 224 78 Lund SE
- 专利权人： DISAB Vacuum Technology AB,SANDVIK AKTIEBOLAG
- 当前专利权人： DISAB Vacuum Technology AB,SANDVIK AKTIEBOLAG
- 当前专利权人地址： Skiffervägen 44 224 78 Lund SE
- 代理机构： Rostovanyi, Peter
- 优先权： SE9400324 19940202
- 国际公布： WO9613649 19960509
- 主分类号： E21B21/00
- IPC分类号： E21B21/00 ; E21B10/60 ; E21D9/10
摘要：
In a method for use in dry, rotary, crushing full-area drilling, use is made of suction air alone for removing cuttings produced during drillings. To carry out the method, two suction nozzles (13) are arranged on the underside of a cutterhead (1). These nozzles together have a substantially diametrical extent and the length of a radius on the cutterhead and are provided with suction intakes (14A) in the vicinity of the periphery of the cutterhead. The suction intakes (14A) are connectible a common suction channel (11) in the drill string (6) of the cutterhead. The suction channel (11) has substantially constant diameter.
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