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Underwater HDPE umbilical cable cabin-passing sealing process

A technology of umbilical cable and cabin penetration, which is applied in the field of underwater HDPE umbilical cable penetration sealing technology, which can solve the problems of inefficiency, internal cable and optical fiber cable composite structure damage, etc., and achieve the effect of convenient installation, reliable and effective process

Active Publication Date: 2018-06-19
上海禹海科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the interior of the underwater HDPE umbilical cable has its own material properties, high-temperature treatment will damage its internal cables, optical fiber cables and other composite structures, so the hot-melt connection mode also has its application limitations
The above connection methods have the following disadvantages: 1. The thermal fusion connection method has its application limitations in the complex underwater umbilical cable connection; 2. The electrofusion connection method has its application limitations in the complex underwater umbilical cable connection; 3. Regardless of The electrofusion or hot melt connection method has requirements for the shell material of the underwater equipment, and the shell material of the equipment is HDPE material or other composite materials with similar molecular chains
[0004] To sum up, there is currently no effective technology in the existing technology that can realize the connection between the underwater HDPE umbilical cable and the metal material and have the characteristics of pressure resistance and watertightness

Method used

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  • Underwater HDPE umbilical cable cabin-passing sealing process
  • Underwater HDPE umbilical cable cabin-passing sealing process
  • Underwater HDPE umbilical cable cabin-passing sealing process

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1, the present invention takes the connection between the metal pressure vessel and the outer sheath of the HDPE umbilical cable as an example to illustrate the HDPE umbilical cable penetration sealing process. The metal pressure vessel used in this embodiment is one end closed and the other end open metal container.

[0039] like figure 1 As shown, a kind of underwater HDPE umbilical cable penetrating sealing process includes the following steps:

[0040] 1. Impregnation step: completely immerse the outer sheath of HDPE umbilical cable in 1% weak acid solution, place it in an oven at 50°C, keep it warm for 0.2-2 hours, and then take it out.

[0041] The weakly acidic solution described in the above steps includes at least one selected from the following groups: ammonium phosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium sulfate, ammonium persulfate, ammonium peroxodisulfate, ammonium bisulfate, ammonium nitrate, nitric acid Amm...

Embodiment 2

[0049] Embodiment 2, the present invention takes the connection between the metal pressure vessel and the outer sheath of the HDPE umbilical cable as an example to illustrate the HDPE umbilical cable penetration sealing process. The metal pressure vessel used in this embodiment is one end closed and the other end open metal container.

[0050] like figure 1 As shown, a kind of underwater HDPE umbilical cable penetrating sealing process includes the following steps:

[0051] 1. Impregnation step: completely immerse the outer sheath of HDPE umbilical cable in 15% weak acid solution, place it in an oven at 60°C, keep it warm for 0.2-2 hours, and then take it out.

[0052] The weakly acidic solution described in the above steps includes at least one selected from the following groups: ammonium phosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium sulfate, ammonium persulfate, ammonium peroxodisulfate, ammonium bisulfate, ammonium nitrate, nitric acid Am...

Embodiment 3

[0060] Embodiment 3, the present invention takes the connection between the metal pressure vessel and the outer sheath of the HDPE umbilical cable as an example to illustrate the HDPE umbilical cable penetrating sealing process. The metal pressure vessel used in this embodiment is one end closed and the other end open metal container.

[0061] like figure 1 As shown, a kind of underwater HDPE umbilical cable penetrating sealing process includes the following steps:

[0062] 1. Impregnation step: completely immerse the outer sheath of HDPE umbilical cable in 30% weak acid solution, place it in an oven at 90°C, keep it warm for 0.2-2 hours, and then take it out.

[0063] The weakly acidic solution described in the above steps includes at least one selected from the following groups: ammonium phosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium sulfate, ammonium persulfate, ammonium peroxodisulfate, ammonium bisulfate, ammonium nitrate, nitric acid Am...

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Abstract

The invention discloses an underwater HDPE umbilical cable cabin-passing sealing process which comprises an immersing step of completely immersing an HDPE umbilical cable outer sheath in a weakly acidic solution, placing the HDPE umbilical cable outer sheath into an oven for heat preservation and then taking the HDPE umbilical cable outer sheath out, a washing step of washing the impregnated HDPEumbilical cable outer sheath with deionized water, a drying step of placing the washed HDPE umbilical cable outer sheath until the surface of the HDPE umbilical cable outer sheath is dry, and an assembly step of placing the HDPE umbilical cable outer sheath into an opening end of a metal pressure resistant shell and pouring a filler to seal an opening, then placing the HDPE umbilical cable outer sheath into the oven for heat preservation and then taking the HDPE umbilical cable outer sheath out to be cooled still. By using the above process, the underwater HDPE umbilical cable cabin-passing sealing process provided by the invention is reliable and effective, technical difficulties of underwater HDPE umbilical cable cabin passing and equipment connection are solved, and the underwater HDPEumbilical cable cabin-passing sealing process is verified by practice and has a good effect in the field of sea engineering construction.

Description

technical field [0001] The invention relates to the technical field of marine construction operations, in particular to an underwater HDPE umbilical cable penetrating sealing process. Background technique [0002] The underwater HDPE umbilical cable is widely used in the field of marine construction operations. The underwater HDPE umbilical cable is widely used in the marine field. It has light weight (lighter than water, specific gravity is 0.941-0.960), corrosion resistance, low temperature resistance, electrical insulation It has the advantages of good resistance and wear resistance; the underwater HDPE umbilical cable mainly provides functions such as power supply, signal communication and control of underwater equipment, so its function must be connected with the equipment and ensure watertight characteristics. Involving HDPE umbilical cable terminal trailing head penetration connection or equipment shell penetration connection made of metal materials, there is no good ...

Claims

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Application Information

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IPC IPC(8): H01B7/14H01B7/17H01B13/22
CPCH01B7/14H01B7/17H01B13/22H01B13/228
Inventor 张军张利
Owner 上海禹海科技有限公司
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