Unlock instant, AI-driven research and patent intelligence for your innovation.

Rubber composite material for plugging leakage of underwater pipeline and use method thereof

A composite material and rubber technology, applied in the direction of pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve the problems of limited applicability and construction difficulties of underwater pipelines, and achieve the effect of convenient construction and strong adaptability

Inactive Publication Date: 2013-10-30
QINGDAO UNIV OF SCI & TECH +2
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plugging technology disclosed in the above-mentioned patents is mainly applicable to the leakage of pipelines and storage tanks on land, but for the plugging of underwater pipelines, the construction is very difficult, and the applicability to complex damage of underwater pipelines is limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rubber composite material for plugging leakage of underwater pipeline and use method thereof
  • Rubber composite material for plugging leakage of underwater pipeline and use method thereof
  • Rubber composite material for plugging leakage of underwater pipeline and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of the sealing layer:

[0031] Compounding system component distribution ratio (parts by weight): nitrile rubber, 100; semi-reinforcing carbon black, 45; zinc oxide, 5; stearic acid, 1; DCP, 2.4; antioxidant 4010NA, 3; Capryl, 12;

[0032] Preparation process: use an open mill to masticate nitrile rubber 5 times, add zinc oxide and stearic acid, after mixing evenly, add anti-aging agent 4010NA, then add carbon black and mix evenly, then add dioctyl terephthalate Finally, add DCP and knead evenly. After three times of thinning, a kneaded film with uniform thickness will be produced for use.

[0033] Utilize the plate vulcanizing machine that pressure is 50 tons to mold compression vulcanization molding (curing agent is DCP), concrete parameter is temperature 160 ℃, pressure 20MPa, time 10min.

[0034]The protruding stripes distributed in a semi-circular lattice on the surface of the sealing layer are formed by a mould, and the wedge-shaped overlapping struc...

Embodiment 2

[0037] Preparation of the air-filled layer:

[0038] Compounding system component distribution ratio (parts by weight): EPDM rubber, 100; semi-reinforcing carbon black, 70; zinc oxide, 5; stearic acid, 1; DCP, 4; paraffin oil, 1;

[0039] Preparation process: use an open mill to masticate EPDM rubber 5 times, add zinc oxide and stearic acid, after mixing evenly, add carbon black and mix evenly, then add paraffin oil, finally add DCP and mix evenly, After thinning three times, the mixed film with uniform thickness is ready for use.

[0040] Use a flat vulcanizer with a pressure of 50 tons to mold and vulcanize (the vulcanizing agent is DCP). The specific parameters are temperature 160 ° C, pressure 15 MPa, and time 15 minutes. When molding and vulcanizing, first spread a layer of mixed film in the mold, then spread the cellophane used to form the hollow cavity on the film, and then spread a layer of mixed film, and then spread the coated film Nylon cloth or cotton cloth of co...

Embodiment 3

[0044] Preparation of coating layer:

[0045] Compounding system component distribution ratio (parts by weight): EPDM rubber, 100; semi-reinforcing carbon black, 50; zinc oxide, 5; stearic acid, 1; paraffin oil, 1; hydroxypropyl cellulose, 30;

[0046] Preparation process: use an open mill to masticate EPDM rubber 5 times, add zinc oxide and stearic acid, after mixing evenly, add semi-reinforcing carbon black and mix evenly, then add paraffin oil, and finally add hydroxypropyl The base cellulose is mixed evenly, and after three times of thinning, a mixed film with uniform thickness is produced. The mixed film is dissolved in gasoline according to the ratio of 1:2, and then evenly coated on both sides of the nylon cloth, and can be obtained after drying. Wherein said mixing technology is prior art.

[0047] The thickness of the obtained cladding layer is 0.2-1mm, and it is in the form of strips. In order to facilitate construction, it is generally made into long strips with ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of composite materials, particularly provides a rubber composite material for plugging the leakage of an underwater pipeline, which is mainly used for plugging the leakage of the underwater pipeline, particularly for temporarily plugging the leakage of a submarine petroleum pipeline; and the rubber composite material can effectively plug the leakage and the cracks of the submarine pipeline, the damage of the pipeline caused by bending and the like. The composite material comprises a seal layer, an inflated layer and a coated layer. Pressure is produced to the sealed layer by inflating the inflated layer, the seal layer seals, and the coated layer can effectively prevent external expansion when in inflation and can be self-adhered in water without any extra fixing measure. According to the invention, the rubber composite material for plugging the leakage of the underwater pipeline is convenient to construct underwater, and has very strong adaptability to the plugging of the leakage of the underground pipeline in various forms.

Description

technical field [0001] The invention relates to the field of composite materials, and in particular provides a rubber composite material for sealing underwater pipeline leakage. Background technique [0002] Submarine pipelines are pipelines that are laid underwater or buried at a certain depth on the seabed to transport oil, natural gas, water, etc. The emergence of submarine or underwater pipelines provides more convenience for the transportation of the above substances and reduces the cost of transportation. However, due to the special environment, the anti-corrosion layer of the pipeline is easy to be damaged, and it is subjected to external electrochemical corrosion, etc., resulting in weak points, which rupture under the internal pressure or external force of the pipeline, and the long-term action of seawater surge, fatigue stress , so that the pipeline ruptures, and once the pipeline ruptures because it is underwater or on the seabed, the maintenance cost is high and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16L55/168
Inventor 李超芹吴敏徐志刚冯春健赵益民崔书杰刘锦昆朱长晟陈同彦蒋习民
Owner QINGDAO UNIV OF SCI & TECH