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    METHOD AND DEVICE FOR INSTALLING PIPES
    2.
    发明授权
    METHOD AND DEVICE FOR INSTALLING PIPES 失效
    方法和设备铺设管道

    公开(公告)号：EP0827582B1

    公开(公告)日：2000-04-19

    申请号：EP96914313.0

    申请日：1996-05-20

    申请人： BG plc

    发明人： STOVES, Derek ,  ROBINSON, William, Edgar

    IPC分类号： F16L55/16 ,  F16L55/28

    CPC分类号： F16L55/179 ,  F16L55/18 ,  F16L55/28 ,  Y10T29/49902 ,  Y10T29/53652

    摘要： A steel service pipe (12) is connected to a main (10) by a tee (14). A flexible assembly (18) is inserted through the open end of the pipe (12) and through the tee (14) into the main (10). The flexible assembly includes a section of lower stiffness (22) and a ball and socket connection (24) of even lower stiffness at its leading end. The ball (30) is connected to a weight (34). The weight (34) falls down on entering the tee and creates a turning moment on the assembly (18). A plastic pipe (60) is inserted through the open end of the pipe (12) over the assembly (18) and is inserted through the tee (14) into the main (10). The pipe (60) has a corrugated leading end (64) which is more flexible than the remainder of the pipe (60) and has a tapered nose (64) terminating in a cylindrical mouth (66) which enters an aperture (70) in a liner (72) in the main (10).

    METHOD OF FILLING AN EXCAVATED OPENING
    3.
    发明授权
    METHOD OF FILLING AN EXCAVATED OPENING 失效
    方法用于填充LIFTED开幕

    公开(公告)号：EP0846203B1

    公开(公告)日：2000-01-26

    申请号：EP96920951.9

    申请日：1996-06-21

    申请人： BG plc

    发明人： OWEN, Raymond, Caulton

    IPC分类号： E01C23/06

    CPC分类号： E01C23/065 ,  E01C19/025

    摘要： An excavated opening (10) through a pavement (12) of a highway and through the underlying base material (14) to expose a gas main (16) is filled by (i) mixing on site cement, foaming agent and water to produce a fluid grout (26), (ii) mixing the grout with loose excavated spoil (22) in the opening, (iii) agitating the mixture using a hand-held poker vibrator (30), (iv) and repeating this procedure until the level (40) is reached. The level (40) corresponds to the underside of a protective layer (50) which is subsequently applied. The majority of the excavated loose spoil from the opening is reused.

    INSTALLING PIPES
    6.
    发明公开
    INSTALLING PIPES 失效
    方法和设备铺设管道

    公开(公告)号：EP0953125A1

    公开(公告)日：1999-11-03

    申请号：EP97947781.0

    申请日：1997-12-04

    申请人： BG plc

    发明人： DELAFORCE, Stephen Robert

    IPC分类号： F16L55 ,  F16L1

    CPC分类号： F16L55/165 ,  F16L1/00

    摘要： A replacement pipe is installed within an existing service pipe (1) by first advancing a sealing means (6, 8) along the existing pipe to a position adjacent its junction with a main pipe (2), then deploying the sealing means to seal against the inner surface of the existing pipe (in the example shown, by pumping sealant (10) into the space between the seal body (6) and the pipe (1), and subsequently advancing the replacement pipe along the existing pipe. The space between the two pipes is then filled with sealant and finally the sealing means is opened, in the example shown by withdrawing a guide rod (5) and its collar (7) on which the sealing means was advanced into position.

    System for measuring the speed of fluid
    7.
    发明公开
    System for measuring the speed of fluid 失效
    系统zum Messen der Geschwindigkeit eines Fluids

    公开(公告)号：EP0907069A2

    公开(公告)日：1999-04-07

    申请号：EP98118465.8

    申请日：1991-09-09

    申请人： BG plc

    发明人： Gill, Michael John

    IPC分类号： G01F1/66 ,  G01P5/00

    CPC分类号： G01F1/662 ,  G01F1/667 ,  G01F15/00 ,  G01P5/245

    摘要： A measurement system includes a housing 10 with a duct 11 having an inlet 13 and outlet 14. Fluid passes though a number of apertures 47 in a chamber 21 and then through a measuring tube 40 which incorporates extensions 41. Fluid exits via chamber 22 and its apertures 47 to outlet 14. Transducers 36,37 are provided in chambers 53,50 and have an acoustic path through the measuring tube. Control electronics cause the transducers to send a burst of signals in alternate directions through the tube to determine fluid speed.

    摘要翻译： 测量系统包括具有管道11的壳体10，管道11具有入口13和出口14.流体通过腔室21中的多个孔47，然后通过包含延伸部分41的测量管40.流体经由腔室22及其 孔47到出口14.传感器36,37设置在室53,50中，并具有穿过测量管的声学路径。 控制电子设备使换能器通过管发送一连串信号，以确定流体速度。