CN211488435U - Natural gas line anticorrosion equipment - Google Patents
Natural gas line anticorrosion equipment Download PDFInfo
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- CN211488435U CN211488435U CN201921916118.3U CN201921916118U CN211488435U CN 211488435 U CN211488435 U CN 211488435U CN 201921916118 U CN201921916118 U CN 201921916118U CN 211488435 U CN211488435 U CN 211488435U
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- graphite alkene
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Abstract
The utility model discloses a natural gas line anticorrosion device, this equipment sets up the anticorrosive coating inside and outside the pipeline, improve pipeline anticorrosion effect, the anticorrosive coating uses graphite alkene priming paint coating to add graphite alkene finish coating, can be effectively with corroding medium (like water, oxygen, acid-base salt etc.) and protected metal isolation, the prevention corrodes the emergence, and mix zinc powder in the graphite alkene priming paint coating, play the cathodic protection effect to the pipeline, the polyethylene protective layer can reduce the pipeline outside coating damaged, the method anticorrosion is effectual, low in use cost, therefore, the clothes hanger is strong in practicability.
Description
Technical Field
The utility model belongs to the technical field of the pipeline is anticorrosive and specifically relates to a natural gas line anticorrosion equipment.
Background
The gas pipeline is mainly made of carbon steel materials, and the conveyed gas contains a small amount of corrosive impurities such as water, carbon dioxide, hydrogen sulfide gas and the like, so that the inner wall of the pipeline is corroded after long-time action; the outside of the buried pipeline is corroded due to the action of water, acid, alkali, salt, mineral substances, microorganisms and stray current in soil; corrosion of pipelines causes damage to equipment and accidents, such as fire, explosion, gas leakage, etc., and besides economic loss and environmental damage, life is sometimes injured, so that high attention must be paid to corrosion.
At present, the common method for pipeline corrosion prevention is to add an anticorrosive coating and add cathodic protection, the common external anticorrosive coating is mainly a three-layer polyethylene anticorrosive coating (3PE), but the adhesion between the anticorrosive coating and the outer wall of the pipeline is not enough, so that the anticorrosive coating falls off, and the corrosion of the steel pipe is accelerated; therefore, the pipeline can be additionally provided with a cathode protection device, so that the corrosion of the protected pipeline is slowed down as a cathode in the electrochemical cell, but the cathode protection effect is difficult to achieve due to the problems of improper installation, improper maintenance of the test pile and the like, and the installation and maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the defects of the prior art, and provides an underground gas pipeline anticorrosion method which has the advantages of good anticorrosion effect, low use cost, cathodic protection effect and internal and external anticorrosion.
The utility model adopts the technical proposal that: a natural gas pipeline anticorrosion device mainly comprises the following steps:
(1) and polishing, cleaning and drying the inner surface of the pipeline, uniformly coating a second graphene primer coating on the inner surface of the pipeline with the thickness of 0.05mm, coating a second graphene finish coating on the second graphene primer coating with the thickness of 0.1mm after a period of time, and finally curing at room temperature to form the inner anticorrosive coating of the pipeline. (2) Polishing, cleaning and drying the outer surface of the pipeline, uniformly coating the first graphene primer coating on the outer surface of the pipeline with the thickness of 0.05mm, coating the first graphene finish coating on the first graphene primer coating with the thickness of 0.1mm after a period of time, then adding a polyethylene protective layer on the second graphene finish coating with the thickness of 1.5mm, and finally curing at room temperature to form the outer-pipeline anticorrosion coating.
The preparation method of the graphene primer coating comprises the following steps: uniformly stirring fillers such as epoxy resin, zinc powder and graphene powder in a dispersing device according to a certain proportion, then adding other auxiliaries and solvents, grinding to a certain fineness by using a grinder, and filtering to obtain the graphene primer coating;
the preparation method of the graphene finish paint comprises the following steps: uniformly stirring epoxy resin, mica iron oxide and graphene powder filler in a dispersing device according to a certain proportion, then adding other auxiliaries and solvents, grinding to a certain fineness by using a grinding machine, and filtering to obtain a finish paint;
the graphene primer coating comprises the following components: 25-35 parts of epoxy resin, 30-50 parts of zinc powder, 1-2 parts of graphene powder and 15-20 parts of other auxiliaries and solvents;
the graphene finish paint comprises the following components: 35-45 parts of epoxy resin, 20-40 parts of mica iron oxide, 1-3 parts of graphene powder and 20-30 parts of other auxiliaries and solvents;
the thickness of the graphene primer coating is 0.05-0.06mm, the thickness of the graphene finish coating is 0.1-0.2mm, and the thickness of the polyethylene protective layer is 1-2 mm;
the utility model has the advantages that:
(1) the graphene primer coating is doped with zinc powder with the self-corrosion potential more negative than that of the metal pipeline, and the zinc powder contained in the coating is preferentially corroded as an anode in the corrosion process, so that the generation and development of the corrosion reaction of the metal pipeline are delayed, and the metal pipeline is effectively protected;
(2) the graphene primer coating and the graphene finish coating have better comprehensive protection performance, and can effectively improve the physical shielding effect and isolate corrosive media (such as water, oxygen, salt mist and the like) from protected metal, thereby preventing the formation of a corrosion battery or inhibiting the diffusion of the corrosion battery;
(3) the polyethylene protective layer can protect the external coating of the pipeline, and the damage of the graphene coating caused by artificial factors in the pipeline installation process is effectively reduced;
(4) the method has the advantages that the anticorrosive layer is arranged inside and outside the pipeline, the pipeline protection effect is improved, the corrosion is reduced, the anticorrosive effect is enhanced, the use cost is reduced, and the practicability is high.
Drawings
FIG. 1: the cross section of the pipeline anticorrosive coating is schematic.
In the figure, 1-pipeline, 2-graphene primer coating I, 3-graphene finishing coating I, 4-polyethylene protective layer, 5-graphene primer coating II and 6-graphene finishing coating II.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific examples:
a natural gas pipeline corrosion prevention apparatus comprising:
(1) and (2) polishing, cleaning and drying the inner surface of the pipeline 1, uniformly coating a second graphene primer coating 5 on the inner surface of the pipeline 1 to a thickness of 0.05mm, coating a second graphene finish coating 6 on the second graphene primer coating 5 to a thickness of 0.1mm after a period of time, and finally curing at room temperature to form an inner anticorrosive layer of the pipeline.
(2) The outer surface of the pipeline 1 is polished, cleaned and dried, the first graphene primer coating 2 is uniformly coated on the outer surface of the pipeline 1, the thickness of the first graphene primer coating 2 is 0.05mm, after a period of time, the first graphene finish coating 3 is coated on the first graphene primer coating 2, the thickness of the first graphene primer coating is 0.1mm, then the second graphene finish coating 3 is added with a polyethylene protective layer 4, the thickness of the second graphene finish coating is 1.5mm, and finally the second graphene primer coating is cured at room temperature to form the pipeline outer anticorrosion.
Preparing a graphene primer coating: uniformly stirring 30 parts of epoxy resin, 45 parts of zinc powder and 1 part of graphene powder in a dispersing device, then adding 24 parts of other auxiliary agents and solvents, grinding to a certain fineness by using a grinder, and filtering to obtain the graphene primer coating;
preparing a graphene finish coating: uniformly stirring 40 parts of epoxy resin, 30 parts of mica iron oxide and 2 parts of graphene powder in a dispersing device, then adding 28 parts of other auxiliary agents and solvents, grinding to a certain fineness by using a grinder, and filtering to obtain a finish paint;
although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (6)
1. The utility model provides a natural gas line anticorrosion equipment, includes pipeline, graphite alkene priming paint coating one, graphite alkene finish paint coating one, the polyethylene protective layer, graphite alkene priming paint coating two, graphite alkene finish paint coating two, its characterized in that:
the inner surface of the pipeline is coated with a second graphene primer coating, the inner surface of the second graphene primer coating is coated with a second graphene finish coating, the outer surface of the pipeline is coated with a first graphene primer coating, the outer surface of the first graphene primer coating is coated with a first graphene finish coating, and the outer surface of the first graphene finish coating is provided with a polyethylene protective layer.
2. The natural gas pipeline corrosion prevention apparatus according to claim 1, wherein: the thickness of the graphene primer coating II is 0.05 mm.
3. The natural gas pipeline corrosion prevention apparatus according to claim 1, wherein: and the thickness of the graphene finish paint is 0.1 mm.
4. The natural gas pipeline corrosion prevention apparatus according to claim 1, wherein: the first degree of the graphene primer coating is 0.05 mm.
5. The natural gas pipeline corrosion prevention apparatus according to claim 1, wherein: the thickness of the graphene finish paint is 0.1 mm.
6. The natural gas pipeline corrosion prevention apparatus according to claim 1, wherein: the thickness of the polyethylene protective layer is 1.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921916118.3U CN211488435U (en) | 2019-11-08 | 2019-11-08 | Natural gas line anticorrosion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921916118.3U CN211488435U (en) | 2019-11-08 | 2019-11-08 | Natural gas line anticorrosion equipment |
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| Publication Number | Publication Date |
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| CN211488435U true CN211488435U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921916118.3U Active CN211488435U (en) | 2019-11-08 | 2019-11-08 | Natural gas line anticorrosion equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112295880A (en) * | 2020-11-06 | 2021-02-02 | 常州市盛诺管业有限公司 | Machining process of precision seamless steel tube for gas spring |
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2019
- 2019-11-08 CN CN201921916118.3U patent/CN211488435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112295880A (en) * | 2020-11-06 | 2021-02-02 | 常州市盛诺管业有限公司 | Machining process of precision seamless steel tube for gas spring |
| CN112295880B (en) * | 2020-11-06 | 2022-02-01 | 常州市盛诺管业有限公司 | Machining process of precision seamless steel tube for gas spring |
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