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Quick mounting device for underwater expansion bend and mounting method of quick mounting device

An installation device and fast technology, applied in pipeline laying and maintenance, mechanical equipment, pipes/pipe joints/pipe fittings, etc., can solve the problems of high construction cost, complicated operation, and long time consumption, so as to reduce construction cost and simplify assembly degree, time-saving effect

Inactive Publication Date: 2018-05-29
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The conventional underwater installation method of the expansion bend is that after the expansion bend is lowered to the seabed and sits on the bottom, the diver first adjusts the position and posture of the expansion bend with tools such as floating bags, chains, and counterweights, and then the flange of the expansion bend and the sea pipe can be adjusted. The pairing and connection of flanges is complex, time-consuming and expensive

Method used

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  • Quick mounting device for underwater expansion bend and mounting method of quick mounting device
  • Quick mounting device for underwater expansion bend and mounting method of quick mounting device
  • Quick mounting device for underwater expansion bend and mounting method of quick mounting device

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Embodiment Construction

[0029] Such as Figures 1 to 5 As shown, the underwater expansion bend quick installation device of the present invention includes a buoyant bag 1, a guide cable 2, an expansion bend 10, a sling 19, a sea pipe flange assembly and an expansion bend assembly, such as figure 1 As shown, the two ends of the expansion bend 10 are tied with rigging 19, and the rigging 19 is used for the construction ship crane to lift the expansion bend device into the water, and the expansion bend 10 is connected with several cables 17, The other end of the cable 17 is connected with a buoyant bag 18, the two ends of the expansion bend 10 are connected with an expansion bend assembly, the expansion bend assembly is connected to the sea pipe flange assembly, and one end of the guide cable 2 is connected to the The flange assembly of the sea pipe is connected, and the other end is connected with the floating bag 1. The floating bags 1 and 18 are selected according to the gravity of the expansion bend...

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PUM

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Abstract

The invention discloses a quick mounting device for an underwater expansion bend and a mounting method of the quick mounting device. The device comprises a floating bag, a guide mooring rope, an expansion bend, rigs, a subsea pipeline flange assembly and expansion bend assemblies, wherein the two ends of the expansion band are tied with the rigs; the mooring rope is connected on the expansion bend; the other end of the mooring rope is connected with the floating bag; the two end parts of the expansion bend are simultaneously connected with the expansion bend assemblies; the expansion bend assemblies are in butt joint with the subsea pipeline flange assembly; one end of the guide mooring rope is connected with the subsea pipeline flange assembly; and the other end of the guide mooring ropeis connected with the floating bag. The quick mounting device can realize underwater quick mounting of the expansion bend, is simple and efficient in operation, and reduces construction cost.

Description

technical field [0001] An underwater expansion bend rapid installation device and installation method are particularly suitable for underwater installation of expansion bends under severe environmental conditions such as high sea current velocity, complex underwater conditions, and low underwater visibility. Background technique [0002] The conventional underwater installation method of the expansion bend is that after the expansion bend is lowered to the seabed and sits on the bottom, the diver first adjusts the position and posture of the expansion bend with tools such as floating bags, chains, and counterweights, and then the flange of the expansion bend and the sea pipe can be adjusted. The pairing and connection of flanges is complex, time-consuming and expensive. Contents of the invention [0003] The object of the present invention is to provide a rapid installation device and installation method of an underwater expansion bend, which can realize the rapid underwat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/16
CPCF16L1/16
Inventor 林先文周声结林华春张万兵梁兴华刘立辉
Owner CHINA NAT OFFSHORE OIL CORP
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