CN202546796U - Anticorrosive coating structure at desulfurized steel base flue expansion joint - Google Patents
Anticorrosive coating structure at desulfurized steel base flue expansion joint Download PDFInfo
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- CN202546796U CN202546796U CN2012201073044U CN201220107304U CN202546796U CN 202546796 U CN202546796 U CN 202546796U CN 2012201073044 U CN2012201073044 U CN 2012201073044U CN 201220107304 U CN201220107304 U CN 201220107304U CN 202546796 U CN202546796 U CN 202546796U
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- expansion joint
- anticorrosive coat
- anticorrosive coating
- steel matrix
- steel base
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Abstract
The utility model discloses an anticorrosive coating structure at a desulfurized steel base flue expansion joint, belonging to the technical field of corrosion resistance. The anticorrosive coating structure at a desulfurized steel base flue expansion joint comprises an expansion joint steel base and a rubber elastic expansion joint, wherein a glass lamella anticorrosive coating is laid on the expansion joint steel base, a glass fiber reinforced plastic anticorrosive coating is laid on the glass lamella anticorrosive coating; the rubber elastic expansion joint is arranged on the glass fiber reinforced plastic anticorrosive coating; and a silica gel seal filling layer is laid between the glass fiber reinforced plastic anticorrosive coating and the rubber elastic expansion joint. The utility model has the advantages of simple structure and ingenious concept, can effectively solve the most frequent problems of leakage of corrosive flue gas and corrosive liquid in such position, corrosion of the steel base and the like, prolongs the service life and can maximally lower the operating maintenance cost.
Description
Technical field
The utility model relates to a kind of aseptic technic, particularly a kind of aseptic technic of desulfurization steel matrix flue expansion joint.
Background technology
A large amount of SO are contained from the flue gas of boiler emission in thermal power plant before not setting up desulfurizer
2, directly enter atmosphere, SO through chimney
2Combine to form acid solution with airborne moisture, accumulate over a long period, influence the healthy of people with the form contaminated environment of acid rain.
After heat-engine plant desulfurizer was set up, this environmental issue just was able to solve.What enter atmosphere through chimney before the desulfurization is high-temperature gas, be do not have corrosive, but what enter atmosphere after the desulfurization is the low temperature wet flue gas, contain the acid solution of heterogeneity, as: sulfuric acid, nitric acid etc., corrosivity is stronger.So must carry out the lining anti-corrosion construction to desulphurization plant such as desulfurizing tower, flue gas flue etc., prevent its dielectric corrosion that is corroded.Some are difficultly constructed or the phenomenon that anticorrosive coat comes off or steel matrix is corroded wears will occur, the position that desulfurization steel matrix flue expansion joint place comes to this than the position of destructible through a period of time operation back in the heat-engine plant desulfurized lining anti-corrosion engineering of being done.Because desulfurization steel matrix flue gas flue is longer, whenever the influence that the caoutchouc elasticity expansion joint is eliminated to expand with heat and contract with cold will be set at a distance from one section, the caoutchouc elasticity expansion joint installs after the expansion joint steel matrix is carried out anticorrosive construction again.In the process of installing, easily ready-made anticorrosive coat is destroyed, and vibrations are bigger here, so cause anticorrosive coat destruction easily and then cause that steel matrix is corroded.This has not only polluted the environment of plant area, but also badly influences the safe in utilization of flue, brings economic loss and potential safety hazard to entire power plant.
In the prior art; A kind of scheme is directly on expansion joint, only to do the glass flake anticorrosive coat; By installation unit the caoutchouc elasticity expansion joint is installed then and is just accomplished, this scheme exists that antiseptic property is poor, deformation resistance is bad, anticorrosive coat is prone to ruined weak point when the caoutchouc elasticity expansion joint is installed.Another kind of scheme is to do one deck glass flake anticorrosive coat earlier, and then does one deck fiberglass anticorrosive coat.Its antiseptic property of more only doing the glass flake anticorrosive coat is good; But still there is the imperfect defective of serviceability; Especially the good seal utterly of the slit between caoutchouc elasticity expansion joint and the fiberglass anticorrosive coat, the phenomenon of leakage flue gas, leakage from the slit will appear in operation a period of time.Time has been grown the steel matrix expansion joint and will be corroded, and then more places of leaking flue gas, leakage occur more, influences the normal operation of whole desulfurizer.
The utility model content
The goal of the invention of the utility model is: to the problem of above-mentioned existence; Provide a kind of simple in structure; Favorable anti-corrosion effect; Cost is lower, and difficulty of construction is low, the anti-corrosion layer structure that can prevent internal stress and outside destroy, acid liquid corrosion effectively and prevent to corrode the desulfurization steel matrix flue expansion joint place of flue gas, corrosive liquid leakage.
The technical scheme that the utility model adopts is following:
The anti-corrosion layer structure at the desulfurization steel matrix flue expansion joint place of the utility model; Comprise expansion joint steel matrix and caoutchouc elasticity expansion joint; Be equipped with the glass flake anticorrosive coat on the said expansion joint steel matrix; Be equipped with the fiberglass anticorrosive coat on the said glass flake anticorrosive coat, said caoutchouc elasticity expansion joint is arranged on the fiberglass anticorrosive coat, is equipped with the silica gel sealing packed layer between said fiberglass anticorrosive coat and the caoutchouc elasticity expansion joint.
Owing to adopted said structure, the glass flake anticorrosive coat is as impervious layer of corrosion and the infiltration that can fully resist various acid solutions, and fiberglass anticorrosive coat and glass flake anticorrosive coat combine; As complete anti-corrosion layer structure; Can fully resist the corrosion of various acid solutions, and have excellent anti deformability, impermeability and external force resistance destructive, be arranged on the silica gel sealing packed layer between caoutchouc elasticity expansion joint and the fiberglass anticorrosive coat; Be used to prevent the leakage of etchant gas, corrosive liquid; And non-deformability and corrosion stability are arranged, make the anti-corrosion layer structure of desulfurization steel matrix flue expansion joint of the utility model can effectively prevent the leakage of various etchant gases and corrosive liquid; And have good non-deformability, an excellent in durability.
In order to make anticorrosive coat possess anti-permeability performance preferably, make that whole anticorrosion structure antiseptic effect is better, more stable, longer service life, therefore further supplementary technology is: the silica gel sealing packed layer adopts modified organic silicon rubber to process.
For the thickness that makes anticorrosive coat satisfies national requirements, possess antiseptic effect preferably simultaneously, be convenient to construction and practice thrift cost, adopt further supplementary technology to be: the thickness of said glass flake anticorrosive coat is 1.5-2.0mm.
For the thickness that makes anticorrosive coat satisfies national requirements, possess antiseptic effect preferably simultaneously, be convenient to construction and practice thrift cost, adopt further supplementary technology to be: the thickness of said fiberglass anticorrosive coat is 1.0-1.5mm.
For the thickness that makes anticorrosive coat satisfies national requirements, possess antiseptic effect preferably simultaneously, be convenient to construction and practice thrift cost, adopt further supplementary technology to be: the thickness of said silica gel sealing packed layer is 1.5-2.0mm.
In sum, owing to adopted technique scheme, the beneficial effect of the utility model is:
1, the anti-corrosion layer structure at the desulfurization steel matrix flue expansion joint place of the utility model is simple in structure, is skillfully constructed; Can effectively solve the corrosion flue gas that this position is prone to most, corrosive liquid is revealed, steel matrix problem such as be corroded; Prolong service life, can reduce maintenance cost to greatest extent;
2, the anti-corrosion layer structure at the desulfurization steel matrix flue expansion joint place of the utility model can prevent acid liquid corrosion and by outside destroy, desulfurization steel matrix flue expansion joint is played protection effectively, and antiseptic property be good;
3, the anti-corrosion layer structure at the desulfurization steel matrix flue expansion joint place of the utility model, difficulty of construction is low, easy to maintenance, and with low cost, is beneficial to popularization.
Description of drawings
Fig. 1 is the anti-corrosion layer structure sketch map at the desulfurization steel matrix flue expansion joint place of the utility model.
Mark among the figure: 1-expansion joint steel matrix, 2-glass flake anticorrosive coat, 3-fiberglass anticorrosive coat, 4-silica gel sealing packed layer, 5-caoutchouc elasticity expansion joint.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1; The anti-corrosion layer structure of the desulfurization steel matrix flue expansion joint of the utility model comprises expansion joint steel matrix 1 and caoutchouc elasticity expansion joint 5, on said expansion joint steel matrix 1, is equipped with glass flake anticorrosive coat 2; On said glass flake anticorrosive coat 2, be equipped with fiberglass anticorrosive coat 3; Caoutchouc elasticity expansion joint 5 is arranged on the fiberglass anticorrosive coat 3, is filled with silica gel between said fiberglass anticorrosive coat 3 and the caoutchouc elasticity expansion joint 5, forms silica gel sealing packed layer 4.Glass flake anticorrosive coat 2 combines with fiberglass anticorrosive coat 3, as complete anticorrosive coat, can fully resist the corrosion of various acid solutions, and non-deformability, external force resistance destructiveness and impervious are arranged.Fiberglass anticorrosive coat 3, silica gel sealing packed layer 4 and caoutchouc elasticity expansion joint 5 combine, the leakage that can prevent to corrode flue gas, corrosive liquid fully, and non-deformability is good.Silica gel sealing packed layer 4 is processed by modified organic silicon rubber, has better antiseptic property and impervious ability.The thickness of said glass flake anticorrosive coat 2 can be 1.5mm, also can be 2.0mm, according to the rules, can in 1.5mm-2.0mm, select arbitrarily, is as the criterion to satisfy actual on-the-spot needs.The thickness of said fiberglass anticorrosive coat 3 can be 1.0mm, also can be 1.5mm, according to the rules, can in 1.0-1.5mm, select arbitrarily, is as the criterion to satisfy actual on-the-spot needs.The thickness of said silica gel sealing packed layer 4 can be 1.5mm, also can be 2.0mm, according to the rules, can in 1.5-2.0mm, select arbitrarily, is as the criterion to satisfy actual on-the-spot needs.
The anti-corrosion layer structure of the desulfurization steel matrix flue expansion joint of the utility model; Its anticorrosive coat gross thickness is 4-5.5 mm; Therefore the thickness of glass flake anticorrosive coat 2, fiberglass anticorrosive coat 3 and silica gel sealing packed layer 4 can be selected in its scope; Reduce cost as far as possible, be advisable with the gross thickness that satisfies anticorrosive coat.
The anti-corrosion layer structure of the desulfurization steel matrix flue expansion joint of the utility model; For the thick silica gel sealing packed layer of the thick fiberglass anticorrosive coat+1.5-2.0mm of the thick glass flake anticorrosive coat+1.0-1.5mm of 1.5-2mm as matrix anti-corrosion layer structure, gross thickness 4-5.5mm.This anti-corrosion layer structure is only done the glass flake anticorrosive coat with the expansion joint steel matrix and is compared, and difficulty of construction is suitable, and impermeability and anti-deformation and external force resistance damage capability are better; With compare as anticorrosive coat with glass flake+fiberglass, corrosion resistance is suitable, but permeability resistance and anti-deformation are better.With the protective layer of this anticorrosion structure as the steel matrix expansion joint, through experiment, in some power plant's success test run usefulness, antiseptic property is fabulous.The desulfurization steel matrix flue expansion joint anti-corrosion layer structure of the utility model, its operate time has reached more than 2 years, noly anyly the phenomenon that corrosion comes off takes place because of anticorrosive coat self structure problem.Power plant has also avoided the flue matrix taking place being corroded, the problem that causes power plant to stop production because of anticorrosive coat damages.
The anti-corrosion layer structure of the desulfurization steel matrix flue expansion joint of the utility model, simple in structure, be skillfully constructed; Can effectively solve corrosion flue gas, corrosive liquid leakage that this position is prone to most; Problems such as steel matrix is corroded have prolonged service life, can reduce maintenance cost to greatest extent; Can effectively prevent acid liquid corrosion and sweep of gases, desulfurization steel matrix flue expansion joint is played effectively protection, and antiseptic property is good, difficulty of construction is low, easy to maintenance, with low cost, be beneficial to popularization.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. the anti-corrosion layer structure at a desulfurization steel matrix flue expansion joint place; Comprise expansion joint steel matrix (1) and caoutchouc elasticity expansion joint (5); Be equipped with glass flake anticorrosive coat (2) on the said expansion joint steel matrix (1); Be equipped with fiberglass anticorrosive coat (3) on the said glass flake anticorrosive coat (2); Said caoutchouc elasticity expansion joint (5) is arranged on the fiberglass anticorrosive coat (3), it is characterized in that: be equipped with silica gel sealing packed layer (4) between said fiberglass anticorrosive coat (3) and the caoutchouc elasticity expansion joint (5).
2. the anti-corrosion layer structure at desulfurization steel matrix flue expansion joint as claimed in claim 1 place is characterized in that: said silica gel sealing packed layer (4) adopts modified organic silicon rubber to process.
3. according to claim 1 or claim 2 the anti-corrosion layer structure at desulfurization steel matrix flue expansion joint place, it is characterized in that: the thickness of said glass flake anticorrosive coat (2) is 1.5-2.0mm.
4. according to claim 1 or claim 2 the anti-corrosion layer structure at desulfurization steel matrix flue expansion joint place, it is characterized in that: the thickness of said fiberglass anticorrosive coat (3) is 1.0-1.5mm.
5. according to claim 1 or claim 2 the anti-corrosion layer structure at desulfurization steel matrix flue expansion joint place, it is characterized in that: the thickness of said silica gel sealing packed layer (4) is 1.5-2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201073044U CN202546796U (en) | 2012-03-21 | 2012-03-21 | Anticorrosive coating structure at desulfurized steel base flue expansion joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201073044U CN202546796U (en) | 2012-03-21 | 2012-03-21 | Anticorrosive coating structure at desulfurized steel base flue expansion joint |
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| CN202546796U true CN202546796U (en) | 2012-11-21 |
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| CN2012201073044U Expired - Lifetime CN202546796U (en) | 2012-03-21 | 2012-03-21 | Anticorrosive coating structure at desulfurized steel base flue expansion joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289448A (en) * | 2021-04-26 | 2021-08-24 | 国家能源集团宁夏煤业有限责任公司 | Desulfurization absorption tower, circulation tank, desulfurization device and desulfurization system |
-
2012
- 2012-03-21 CN CN2012201073044U patent/CN202546796U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289448A (en) * | 2021-04-26 | 2021-08-24 | 国家能源集团宁夏煤业有限责任公司 | Desulfurization absorption tower, circulation tank, desulfurization device and desulfurization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU LONGZHIQUAN SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER NAME: CHENGDU LONGQUAN ANTI-CORROSION ENGINEERING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610100, No. six, No. 338, Chengdong Road, Chengdu economic and Technological Development Zone, Sichuan Patentee after: Chengdu Longzhiquan Science & Technology Co., Ltd. Address before: 610100, No. six, No. 338, Chengdong Road, Chengdu economic and Technological Development Zone, Sichuan Patentee before: Chengdu Longquan Anti-Corrosion Engineering Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |