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    • 10. 发明申请
    • METHOD AND DEVICE FOR REPLACING DAMAGED PIPES BURIED IN THE GROUND
    • 用于更换在地面上破损的管道的方法和装置
    • WO1988003245A1
    • 1988-05-05
    • PCT/SE1987000484
    • 1987-10-20
    • UTVECKLINGSBOLAGET MALVA I MALMÖ ABPERSSON, RonnieCARLSSON, KristerMATTSSON, Bengt
    • UTVECKLINGSBOLAGET MALVA I MALMÖ AB
    • F16L55/18
    • B29C66/1142B29C65/2023B29C66/5221B29C66/91231B29C66/91411B29C66/91421B29C66/91431B29C66/91641B29C66/961B29L2023/22E21B7/30E21B19/155F16L55/1658F16L55/18
    • Method for replacing damaged pipes, e.g. sewers, buried in the ground and extending between two shafts or access wells, lengths of a replacement pipe being descended one after the other through one of the shafts. The pipe lengths (1) are descended in the shaft placed on a pressure medium hose (5) by means of which a breaker head (3) is powered for disintegrating the existing damaged pipe (B) while being pulled through it and entraining the first pipe length (1). The pipe lengths are descended through the shaft to a position adjacent a previously descended pipe length, whereupon the end surfaces of the two pipe lengths are heated to a temperature in the vicinity of the melting point and are welded together. The invention also relates to a device for heating the end surfaces of the pipe lengths (1) for carrying out the method. The device consists of two plate members (12, 13) which are interconnected by a hinge (11) and which, when brought together, form a heating plate (6) for heating the pipe end surfaces to be welded together, said heating plate (6) having a central hole (18) for allowing passage of the compressed-air hose (5).
    • 更换损坏的管道的方法,例如 下水道埋在地下,并在两个轴或通道井之间延伸,更换管道的长度一个接一个地通过一个轴下降。 管道长度(1)在放置在压力介质软管(5)上的轴中下降,通过该管道将断路器头(3)供电以将现有损坏的管道(B)分解,同时将其拉入并夹带第一 管长(1)。 管长度通过轴下降到与先前下降的管道长度相邻的位置,然后将两个管道长度的端面加热到熔点附近的温度并焊接在一起。 本发明还涉及一种用于加热管道长度(1)的端面的装置,用于实施该方法。 该装置由两个通过铰链(11)互连的板构件(12,13)组成,并且当组合在一起时形成加热板(6),用于加热待焊接在一起的管端面,所述加热板 6)具有用于允许压缩空气软管(5)通过的中心孔(18)。