초록 ▼

The invention relates to clamping assemblies for use, for example, in clamping abutting end portions of, say, pipeline members. The assemblies are particularly useful in the clamping of insert valves in oil pipelines. The assembly comprises two clamping elements (36) adapted to encircle the pipeline

The invention relates to clamping assemblies for use, for example, in clamping abutting end portions of, say, pipeline members. The assemblies are particularly useful in the clamping of insert valves in oil pipelines. The assembly comprises two clamping elements (36) adapted to encircle the pipeline members (2,4) in abutting relationship, support means (50) to support the elements (36) in a spaced-apart condition, said support means (50) comprising a mounting member adapted to be secured to one of the members to be clamped, at a location spaced from the abutable surface thereof, said mounting member (50) including a plurality of guide rods (52) projecting therefrom. Each clamping element (36) is slidably mounted upon respective guide rods for movement between the spaced-apart condition and a clamped condition and the guide rods (52) are provided with outer end portions including engaging portions adapted to engage firmly with respect to the clamping elements (36) when in their spaced apart condition, inner portions of the rods being narrower so as to be adapted to allow limited adjusting movement of the elements as they move towards the clamped condition.

대표청구항 ▼

A valve assembly comprising: a valve receiving member arranged in a pipeline so as to permit the insertion of an insert valve member therein to provide communication between said insert valve member and the bore of the pipeline, a longitudinal axis of the insert valve member lying perpendicular to t

A valve assembly comprising: a valve receiving member arranged in a pipeline so as to permit the insertion of an insert valve member therein to provide communication between said insert valve member and the bore of the pipeline, a longitudinal axis of the insert valve member lying perpendicular to the center line of the pipeline bore, wherein the insert valve member is provided with an at least partly frustoconical nose portion adapted to be received within a complimentarily contoured hollow chamber of the valve receiving member, each of said insert valve member and said valve receiving member having annular flanges with abutable surfaces and being provided with sealing surfaces adapted to be rendered fluid tight in contact by the provision of an annular clamping means comprising two clamping elements adapted to encircle the annular flanges in abutting relationship, a mounting member adapted to be secured to one of the valve members to be clamped, at a location spaced from the abutable surface of said annular flanges, said mounting member including a plurality of elongate guide means projecting therefrom, said guide means extending in two opposed directions in a plane parallel to the plane of the confronting, abutable surfaces of said annular flanges, wherein each said clamping element is suspendedly and slidably mounted upon respective guide means for inward and outward movement along said guide means between said spaced-apart condition and a clamped condition and said guide means being provided with outer end portions having first dimensions and said clamping elements having cooperable means for cooperatively engaging said outer end portions to suspend the clamping elements in a rigid manner when in their spaced-apart condition, said guide means being further provided with inner portions having second dimensions for cooperative engagement with said cooperable means to allow limited vertical adjusting movement of the clamping elements as they move towards the clamped condition, the arrangement being such that the clamping assembly is adapted to clamp one of said abutable surfaces provided on said valve body against a second confronting abutable surface provided on said valve receiving member whereby said insert valve member may be removed from said valve receiving member for maintenance purposes.