CN2658108Y - Anti-corrosion storage tank with insulation coating and aluminium alloy sacrificial anode - Google Patents
Anti-corrosion storage tank with insulation coating and aluminium alloy sacrificial anode Download PDFInfo
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- CN2658108Y CN2658108Y CN 200320110870 CN200320110870U CN2658108Y CN 2658108 Y CN2658108 Y CN 2658108Y CN 200320110870 CN200320110870 CN 200320110870 CN 200320110870 U CN200320110870 U CN 200320110870U CN 2658108 Y CN2658108 Y CN 2658108Y
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- storage tank
- sacrificial anode
- corrosion
- coating
- inside face
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Abstract
The utility model discloses an anti-corrosion storage tank with epoxy glass flake insulation coating and aluminum alloy sacrificial anode. When the utility model is compared with the existing techniques, the utility model has the advantages that: the anti-corrosion of the storage tank can be improved greatly; because the epoxy glass flake insulation coating and the aluminum alloy sacrificial anode are arranged on the inner surface of the storage tank, therefore a very low resistivity can be obtained by the overall structure so as to release quickly and safely the static charge; in addition, the sacrificial anode has an accessional function to protect the damaged points of the insulation coating; because the potential of the aluminum alloy sacrificial anode is lower than that of steels, so the aluminum alloy sacrificial anode can carry out a centralized current protection on the exposed metal body so as to eliminate local battery corrosion and make up the defects of the coating, and thus the service life of the storage tank and the inoxidizing coating can be prolonged and the overhaul cycle of the storage tank can be prolonged so as to ensure a safe running; at the same time, the production cost can be reduced and the practicability is perfect.
Description
One, technical field
The utility model relates to a kind of anti-corrosion-proof insulating coating composite sacrificial anode anti-corrosion storage tank, is particularly useful for storing crude oil.
Two, background technology
Petrol storage tank is an indispensable facility in the storage of petroleum and petrochemical sector oil product, the course of conveying, though the corrosive property of the oil product medium that stores in jar itself is also little, but in long-term operation process, the sedimentation gradually of moisture in the oil product, accumulate in tank bottom, the cmpd and the solid matter that contain a large amount of CO2, chloride, H2S, organic acid, oxygen, sulfur-bearing in these water, its corrosive property is very strong, storage tank corrosion failure, oil product run, drip, leak accident happen occasionally, cause enormous economic loss, simultaneously environment is caused great destruction.In addition, crude oil is easy to generate static charge in processes such as flowing, stir, pour into, and these static charges must be released rapidly, to avoid contingent fire or explosion accident.At present, the interior anti-corrosion measure of storage tank is to lead static class coating in the brushing of tank bottom upper surface, this class coating is to be film material with epoxy resin or alkide resin, carbon dust with conduction, graphite or metal oxide powder etc. are filler, the electrical resistivity of coating is reduced, and has certain conductive capability, thereby play the effect of eliminating static, but exist following shortcoming: 1) contain active potential in the static conductive coating, high-resistance carbonaceous material, when breakage appears in its coating, the metallic matrix of this breaking point will form big negative electrode with coating environment on every side, the corrosion cell form of primary anode, in the corrosive environment of jar prodelta clay water, its electrochemical corrosion degree is quite serious, accelerates the breaking point corrosion, forms the spot corrosion state; 2) owing to added a large amount of granular solids fillers in the coating, doing penetrating quality and will descending to some extent accordingly of its coating makes corrosive medium be easy to be penetrated into metal base surface, corrodes; 3) for leading the static type coating, do not have relevant leak hunting method and standard at present, construction quality can't be ensured.
Three, technology contents
1. goal of the invention
In view of the deficiency that prior art exists, the purpose of this utility model provides a kind ofly can eliminate static, has the insulating coating composite sacrificial anode anti-corrosion storage tank of good antiseptic property again.
2. technical scheme
The utility model insulating coating composite sacrificial anode anti-corrosion storage tank, it comprises storage tank bottom plate and by storage tank that stave sheets surrounded, be provided with epoxy glass flake insulativity coating at described storage tank bottom plate inside face and stave sheets inside face bottom, and the sacrificial aluminium alloy anode piece be set at interval at storage tank bottom plate inside face and stave sheets inside face bottom.
The utility model insulating coating composite sacrificial anode anti-corrosion storage tank, described sacrificial aluminium alloy anode piece is uniformly distributed in storage tank bottom plate inside face and the position below stave sheets inside face 1 rice noodles with loop configuration, the sacrificial aluminium alloy anode piece that is located in the storage tank is welded on the tank shell by steel core, and the thickness of epoxy glass flake insulativity coating is 300～350 μ m.
3. technique effect
The utility model insulating coating composite sacrificial anode anti-corrosion storage tank, owing to adopted epoxy glass flake insulating coating composite sacrificial anode piece, improved the anti-anti-corrosion capability of storage tank greatly, this mainly be because: 1) corrosion stability of oxygen glass flake insulating paint itself is better than static conductive coating, in the brushing process, scale in coating will with matrix surface with the overlapping distribution of parallel direction, the glass flake of lay-up has formed the way barrier for the process of osmosis of corrosive medium layer by layer, make corrosive medium have to detour along random crooked route, in fact be equivalent to and thickeied coating, prolonged the time of corrosive medium arrival metallic matrix greatly, thus the antiseptic property and the service life of having improved coating.2) electric conductivity of sacrificial anode is better than the electric conductivity that carbonaceous in the coating is added material.Owing on tank bottom, laid a large amount of aluminum alloy anode materials, make integral structure have very low electrical resistivity, the static charge that is produced is released rapidly, guarantee safety.3) sacrificial anode has the supplementary protection effect to the coating damage point.The current potential of sacrificial aluminium alloy anode is lower than the current potential of iron and steel; when breakage appears in coating; the current protection that sacrificial anode will be concentrated exposed metallic matrix; eliminate the localized corrosion battery, remedy the deficiency of coating protection, thereby prolong the service life of storage tank protective layer and storage tank itself; the overhaul period of petrol storage tank is prolonged; guarantee safe operation, reduce production costs to have stronger practicality.
Four, description of drawings
Fig. 1 is the utility model storage tank bottom plate sacrificial anode planar view.
Fig. 2 is the utility model tank bottom sacrificial anode and insulating coating section of structure.
Five, the specific embodiment
The utility model will be further described below in conjunction with an embodiment in the accompanying drawing:
The utility model insulating coating composite sacrificial anode anti-corrosion storage tank, it is mainly formed by storage tank bottom plate 3 with by the storage tank that stave sheets 1 is surrounded, according to corrosion-proof technical requirements in the metal tank, brushing epoxy glass flake insulativity coating 4 in storage tank, and be equipped with sacrificial aluminium alloy anode piece 2, make integral structure both have good electrical conductivity, have good antiseptic property again, oxygen glass flake insulating paint is to add 20%～40% glass sheet in having the epoxy resin of corrosion stability.Concrete enforcement is as follows: after the storage tank main body construction is finished, to storage tank bottom plate 3 inside faces and the position below the stave sheets 1 inside face one-meter line, the rust cleaning of sandblasting earlier, according to the size of storage tank and the consumption that calculates sacrificial aluminium alloy anode tenure of use, at interval be uniformly distributed in tank bottom 3 inside faces on and tank shell 1 inside face position one meter below with loop configuration sacrificial aluminium alloy anode piece 2, steel core and the contacted position of tank shell weld together with sacrificial anode piece 2, guarantee that welding fully of contact surface is dead all around, there is not a slit, after removing the welding slag of solder joint totally, brushing epoxy glass flake insulativity coating 4 is in storage tank bottom plate 3 inside faces, stave sheets following position, 2 inside face one-meter lines and the steel core position of sacrificial anode except that body, the thickness of epoxy glass flake insulativity coating 4 reaches 300～350 μ m.
Claims (4)
1. insulating coating composite sacrificial anode anti-corrosion storage tank, it comprises storage tank bottom plate (3) and the storage tank that is surrounded by stave sheets (1), it is characterized in that: be provided with epoxy glass flake insulativity coating (4) at described storage tank bottom plate (3) inside face and stave sheets (1) inside face bottom, and sacrificial aluminium alloy anode piece (2) be set at interval at storage tank bottom plate (3) inside face and stave sheets (1) inside face bottom.
2. insulating coating composite sacrificial anode anti-corrosion storage tank according to claim 1 is characterized in that: described sacrificial aluminium alloy anode piece (2) is uniformly distributed in storage tank bottom plate (3) inside face and the following position of stave sheets inside face 1 rice noodles with loop configuration.
3. insulating coating composite sacrificial anode anti-corrosion storage tank according to claim 1 and 2 is characterized in that: the described sacrificial aluminium alloy anode piece (2) that is located in the storage tank is welded on the tank shell by steel core.
4. insulating coating composite sacrificial anode anti-corrosion storage tank according to claim 1 is characterized in that: the thickness of described epoxy glass flake insulativity coating (4) is 300～350 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110870 CN2658108Y (en) | 2003-11-12 | 2003-11-12 | Anti-corrosion storage tank with insulation coating and aluminium alloy sacrificial anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110870 CN2658108Y (en) | 2003-11-12 | 2003-11-12 | Anti-corrosion storage tank with insulation coating and aluminium alloy sacrificial anode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658108Y true CN2658108Y (en) | 2004-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320110870 Expired - Fee Related CN2658108Y (en) | 2003-11-12 | 2003-11-12 | Anti-corrosion storage tank with insulation coating and aluminium alloy sacrificial anode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658108Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361791A (en) * | 2009-03-30 | 2012-02-22 | 三菱重工业株式会社 | Fuel tank for aircraft |
| CN101508373B (en) * | 2008-02-14 | 2012-09-26 | 泰科热控制有限公司 | Bucket insulation system with perpendicular type interlocked joint closes |
| CN108609315A (en) * | 2016-12-09 | 2018-10-02 | 中国石油化工股份有限公司 | The method for avoiding floating roof tank lightning stroke spark discharge |
-
2003
- 2003-11-12 CN CN 200320110870 patent/CN2658108Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508373B (en) * | 2008-02-14 | 2012-09-26 | 泰科热控制有限公司 | Bucket insulation system with perpendicular type interlocked joint closes |
| CN102361791A (en) * | 2009-03-30 | 2012-02-22 | 三菱重工业株式会社 | Fuel tank for aircraft |
| US8550403B2 (en) | 2009-03-30 | 2013-10-08 | Mitsubishi Heavy Industries, Ltd. | Aircraft fuel tank |
| CN102361791B (en) * | 2009-03-30 | 2015-03-11 | 三菱重工业株式会社 | Fuel tank for aircraft |
| CN108609315A (en) * | 2016-12-09 | 2018-10-02 | 中国石油化工股份有限公司 | The method for avoiding floating roof tank lightning stroke spark discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |