公开(公告)号：EP1167637A2

公开(公告)日：2002-01-02

申请号：EP01305068.7

申请日：2001-06-11

申请人： FRANK MOHN FLATOY A/S ,  Nordic Offshore AS

发明人： Gloppen, Erik ,  Nilsson, Gosta

IPC分类号： E02F5/10

CPC分类号： E02F3/9206 ,  E02F5/006 ,  E02F5/104 ,  E02F5/107

摘要： A trenching unit (12) used to cut trenches in the seabed for laying pipelines or cables.
The unit comprises: a jetting arm (3) with a plurality of sections, each section having at least one nozzle; means for supplying fluid to nozzles (8) in at least two sections; and means (4) for separately controlling the flow characteristics of the fluid supplied to each individual section of the jetting arm.
Two or more units of such apparatus can be used in tandem to extend the fluidisation period of a localised area of the seabed. This is particularly useful when pipes or cables are relatively stiff. The fluidisation period depends upon the distance between the units which is calculated as a function of the characteristics of the seabed and the capabilities of the individual units.
The distance between the units is determined by the length of an adjustable linkage.

摘要翻译： 挖沟单元（12）用于切割海床中的沟槽以铺设管道或电缆。 该单元包括：具有多个部分的喷射臂（3），每个部分具有至少一个喷嘴; 用于在至少两个部分中向喷嘴（8）供应流体的装置; 以及用于分别控制供应到喷射臂的每个单独部分的流体的流动特性的装置（4）。 可以串联使用这种装置的两个或更多个单元来延长海底局部区域的流化周期。 这在管道或电缆相对较硬时特别有用。 流化周期取决于单位之间的距离，这些单位是根据海床的特征和各单位的能力计算的。 单元之间的距离由可调节连杆的长度决定。

公开(公告)号：EP1167637A3

公开(公告)日：2002-05-15

申请号：EP01305068.7

申请日：2001-06-11

申请人： FRANK MOHN FLATOY A/S ,  Nordic Offshore AS

发明人： Gloppen, Erik ,  Nilsson, Gosta

IPC分类号： E02F5/10

CPC分类号： E02F3/9206 ,  E02F5/006 ,  E02F5/104 ,  E02F5/107

摘要： A trenching unit (12) used to cut trenches in the seabed for laying pipelines or cables. The unit comprises: a jetting arm (3) with a plurality of sections, each section having at least one nozzle; means for supplying fluid to nozzles (8) in at least two sections; and means (4) for separately controlling the flow characteristics of the fluid supplied to each individual section of the jetting arm. Two or more units of such apparatus can be used in tandem to extend the fluidisation period of a localised area of the seabed. This is particularly useful when pipes or cables are relatively stiff. The fluidisation period depends upon the distance between the units which is calculated as a function of the characteristics of the seabed and the capabilities of the individual units. The distance between the units is determined by the length of an adjustable linkage.

摘要翻译： 开槽装置（12）用于在海底切割沟槽，用于铺设管线或电缆。 该单元包括：具有多个部分的喷射臂（3），每个部分具有至少一个喷嘴; 用于以至少两个区段向喷嘴（8）供应流体的装置; 和用于分别控制供应到喷射臂的每个单独部分的流体的流动特性的装置（4）。 两台或更多台这种装置可以串联使用，以延长海床局部区域的流化时间。 当管道或电缆相对较硬时，这特别有用。 流化周期取决于各单元之间的距离，这是根据海床特性和各单元的能力计算出来的。 单元之间的距离由可调节连杆的长度决定。