CN103174214A - Anti-corrosion type diffuser used for sewage deep sea discharge - Google Patents
Anti-corrosion type diffuser used for sewage deep sea discharge Download PDFInfo
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- CN103174214A CN103174214A CN2013100917336A CN201310091733A CN103174214A CN 103174214 A CN103174214 A CN 103174214A CN 2013100917336 A CN2013100917336 A CN 2013100917336A CN 201310091733 A CN201310091733 A CN 201310091733A CN 103174214 A CN103174214 A CN 103174214A
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Abstract
The invention relates to a diffuser used for sewage deep sea discharge. The inner wall of a main pipe, the inner walls of ascension pipes, and the inner walls of spray pipes of the diffuser adopt internal anti-corrosion coatings. The outer wall of the main pipe, the outer walls of the ascension pipes, and the outer walls of the spray pipes of the diffuser adopt external anti-corrosion coatings. A sacrificial anode device is arranged on the outer wall of the main pipe of the diffuser. The anti-corrosion diffuser has the advantages of being simple in structure, convenient to construct, good in anti-corrosion effects, low in cost and the like. An anti-corrosion problem of a diffuser which is provided with a plurality of ascension pipes and a plurality of nozzles is solved, sewages and seawater are prevented from corroding the main pipe, the ascension pipes and the spray pipes of the diffuser, service life of the diffuser is prolonged, safety performance of the diffuser is improved, cost of maintenance and replacement of the diffuser is reduced, environmental influence is reduced, and the diffuser can be more effectively environmentally used in sewage deep sea discharge works of ports and coastal cities for a long time.
Description
Technical field
The present invention relates to a kind of diffuser for the sewage deep sea emission, relate in particular to a kind of anticorrosion type diffuser that is used for the sewage deep sea emission with internal and external anti-corrosive erosion effect of the outer wall corrosion that prevents that inner wall corrosion that diffuser pipeline sewage effluent causes and environment seawater from causing.
Background technology
Deep-sea blowdown diffuser is widely used in the deep sea emission engineering of sanitary sewage and the industrial waste water at coastal cities and harbour, by adopting the blowdown diffuser, greatly improved the dilution diffusion that sewage enters the marine site, can reach hundreds of times at diffuser outlet near region scope dilution factor, effectively alleviated the problem of environmental pollution that height that sewage carries out land processing expends the immediate offshore area that causes with sewage row sea.
The blowdown diffuser is the most critical device that sewage is realized the environmental protection and economy deep sea emission, but because diffuser inwall institute sewage effluent has stronger corrosivity mostly, if do not take effective anti-corrosion measure, inner-walls of duct will suffer serious corrosion, marine environment of living in itself has stronger corrosivity on the other hand, the outer wall of diffuser is corrosion and damage very easily also, although corrosion-proof technology for pipeline makes great progress at present, but due to diffuser be one with the complicated pipe-line system of a plurality of tedges and spout, its Anticorrosion is thorny problem always.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this invention is to provide a kind of anticorrosion type diffuser for the sewage deep sea emission, this diffuser prevents the corrosion of each position inside and outside walls such as supervisor, tedge, jet pipe of diffuser by the method that adopts application coating and configuration sacrificial anode device.
The technical solution used in the present invention provides a kind of anticorrosion type diffuser for the sewage deep sea emission, this diffuser includes supervisor, tedge, jet pipe, the matrix inwall of the supervisor of described diffuser, tedge, jet pipe is equipped with inner anticorrosioning coating, the matrix outer wall of the supervisor of described diffuser, tedge, jet pipe is equipped with the outer wall corrosion-inhibiting coating, the outer wall corrosion-inhibiting coating is provided with concrete weighted coating outward, and described diffuser supervisor's matrix outer wall also is provided with sacrificial anode device simultaneously.
That diffuser of the present invention has is simple in structure, easy construction, favorable anti-corrosion effect, low cost and other advantages.In the sewage deep sea emission engineering up to standard that is applied to harbour and coastal cities that this diffuser can be efficiently long-term.This anticorrosion type diffuser has adopted the design of inner corrosion-inhibiting coating and the method for outer wall anticorrosion coat associating sacrificial anode, adopts this kind anticorrosion type diffuser, can greatly extend the application life of deep sea emission engineering, is 20-60.Reduce the expense of maintain and replace seabed blowdown diffuser, also reduced simultaneously diffuser due to the damaged short-term environment pollution that brings of corrosion.
Description of drawings
Fig. 1 sewage deep sea emission of the present invention anticorrosion type diffuser overall structure figure;
Fig. 2 sewage deep sea emission of the present invention anticorrosion type diffuser local structural graph;
The inner wall anti-corrosive coating schematic diagram of Fig. 3 diffuser supervisor of the present invention, tedge, jet pipe;
The outer wall corrosion-inhibiting coating schematic diagram of Fig. 4 diffuser supervisor of the present invention, tedge, jet pipe;
Fig. 5 a diffuser supervisor of the present invention outer wall sacrificial anode device top view;
Fig. 5 b diffuser supervisor of the present invention outer wall sacrificial anode device structure chart.
In figure:
1, supervisor 2, tedge 3, jet pipe 4, supervisor's outer wall sacrificial anode device
5, inner wall anti-corrosive coating 6, outer wall corrosion-inhibiting coating 7, concrete configuration layer
8, steel pipe 9, anode core 10, seamless steel pipe 11, anode assembly stiffener
The specific embodiment
By reference to the accompanying drawings the anticorrosion type diffuser structure for the sewage deep sea emission of the present invention is described in further detail, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
Anticorrosion type diffuser for the sewage deep sea emission of the present invention, this diffuser includes supervisor 1, tedge 2, jet pipe 3, the matrix inwall of the supervisor 1 of described diffuser, tedge 2, jet pipe 3 is equipped with inner anticorrosioning coating 5, the matrix outer wall of the supervisor 1 of described diffuser, tedge 2, jet pipe 3 is equipped with outer wall corrosion-inhibiting coating 6, the outer concrete weighted coating 7 that is provided with of outer wall corrosion-inhibiting coating 6, described diffuser supervisor's 1 matrix outer wall also is provided with sacrificial anode device 4 simultaneously.The matrix of the supervisor 1 of described diffuser, tedge 2, jet pipe 3 is steel pipe 8.
Described inner anticorrosioning coating 5 is epoxy coating or cement-mortar lining.Described outer anticorrosive coating 6 adopts polyurethane coating or three layers of PE coating, and wherein three layers of PE coating are the composite coating that epoxy primer layer, adhesive layer and PE layer form.
Anticorrosion type diffuser of the present invention is achieved in that
On the basis of the diffuser of routine, increased inner wall anti-corrosive coating 5, outer wall corrosion-inhibiting coating 6 and sacrificial anode device 4, form one and have the anticorrosion type diffuser that prevents sewage and the outer seawater corrosion of diffuser in diffuser.This anticorrosion type diffuser is comprised of diffuser supervisor 1, tedge 2, jet pipe 3, wherein, the inwall of diffuser supervisor 1, tedge 2 and jet pipe 3 adopts inner wall anti-corrosive coating 5, the outer wall of the supervisor 1 of diffuser, tedge 2 and jet pipe 3 adopts outer wall corrosion-inhibiting coating 6, diffuser supervisor's outer wall also adopts sacrificial anode device 4 simultaneously, diffuser is by adopting this kind anti-corrosion measure, and its anticorrosion life-span can reach 20-60 as requested.
(1) inwall of diffuser supervisor 1, tedge 2 and jet pipe 3 adopts inner anticorrosioning coating 5.
The inner wall anti-corrosive of diffuser can adopt the anti-corrosion method of inner wall anti-corrosive coating 5, and wherein the inner wall anti-corrosive coating can adopt the organic anti-corrosive coating, concrete recommend adoption epoxy coating and cement-mortar lining.
(2) supervisor 1 of diffuser, tedge 2 and jet pipe 3 outer walls adopt outer anticorrosive coating 6.
At present, the outer anticorrosive coating that pipeline is commonly used mainly contains coating, coal-tar epoxy coating, clinkery epoxy powder coating, polyethylene coating, polyurethane coating and three layers of PE coating.Wherein, coating, coal-tar epoxy coating are because environmental protection problem seldom uses; the toughness that the cementing FBE is intrinsic and smooth surface are difficult for inlaying with concrete weighted coating, and polyethylene coating has the tendency of ESC and cathodic disbonding in seawater.
In view of above-mentioned, diffuser is as a kind of seabed pipeline, and outer anticorrosive coating 6 can adopt polyurethane coating or three layers of PE coating.Polyurethane coating has excellent physical and mechanical properties, decay resistance, and does not contain poisonous hazardous substances, meets social safety environmental protection development need.Three layers of PE coating are a kind of composite coatings that is comprised of epoxy primer, adhesive and PE layer, are also that domestic and international seabed pipeline the most often uses.Its reliability depends on dissolving epoxy powder FBE and the combination of PE layer, PE priming paint has guaranteed three layers of finishing system and the strong adhesion stress of steel and has prevented cathodic disbonding, copolymer binder provides strong combination between PE layer and epoxy layer, the PE layer has very high pliability, anti-mechanical damage makes diffuser have good antiseptic property.
(3) diffuser supervisor 1 outer wall also adopts sacrificial anode device 4 simultaneously.
Claims (4)
1. anticorrosion type diffuser that is used for the sewage deep sea emission, this diffuser includes supervisor (1), tedge (2), jet pipe (3), it is characterized in that: the supervisor of described diffuser (1), tedge (2), the matrix inwall of jet pipe (3) is equipped with inner anticorrosioning coating (5), the supervisor of described diffuser (1), tedge (2), the matrix outer wall of jet pipe (3) is equipped with outer wall corrosion-inhibiting coating (6), the outer concrete weighted coating (7) that is provided with of outer wall corrosion-inhibiting coating (6), described diffuser supervisor's (1) matrix outer wall also is provided with sacrificial anode device (4) simultaneously.
2. the anticorrosion type diffuser for the sewage deep sea emission according to claim 1, it is characterized in that: described inner anticorrosioning coating (5) is epoxy coating or cement-mortar lining.
3. the anticorrosion type diffuser for the sewage deep sea emission according to claim 1, it is characterized in that: described outer anticorrosive coating (6) adopts polyurethane coating or three layers of PE coating, and wherein three layers of PE coating are the composite coating that epoxy primer layer, adhesive layer and PE layer form.
4. the anticorrosion type diffuser for the sewage deep sea emission according to claim 1, it is characterized in that: the matrix of the supervisor of described diffuser (1), tedge (2), jet pipe (3) is steel pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100917336A CN103174214A (en) | 2013-03-21 | 2013-03-21 | Anti-corrosion type diffuser used for sewage deep sea discharge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100917336A CN103174214A (en) | 2013-03-21 | 2013-03-21 | Anti-corrosion type diffuser used for sewage deep sea discharge |
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| CN103174214A true CN103174214A (en) | 2013-06-26 |
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| CN2013100917336A Pending CN103174214A (en) | 2013-03-21 | 2013-03-21 | Anti-corrosion type diffuser used for sewage deep sea discharge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498994A (en) * | 2013-10-18 | 2014-01-08 | 中国海洋石油总公司 | Single-chip type sacrificial anode capable of preventing submarine pipeline from being corroded |
| CN104482315A (en) * | 2014-12-23 | 2015-04-01 | 江苏省常熟环通实业有限公司 | Corrosion-resistant special steel pipe |
Citations (6)
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|---|---|---|---|---|
| JPH09310998A (en) * | 1996-05-23 | 1997-12-02 | Toshiba Corp | Sea water flowing equipment and its maintenance and repairing method |
| CN201475517U (en) * | 2009-08-07 | 2010-05-19 | 天华化工机械及自动化研究设计院 | Anti-corrosion tube with inner epoxy powder and outer three-layer PE composite coating |
| CN201610992U (en) * | 2010-02-04 | 2010-10-20 | 中国海洋石油总公司 | Ocean engineering epoxy-copolymer bottom rubber anti-corrosive counterweight tube |
| CN102560503A (en) * | 2010-12-30 | 2012-07-11 | 中国海洋石油总公司 | Sacrificial anode assembly |
| CN102705579A (en) * | 2012-06-25 | 2012-10-03 | 王运章 | Mounting method for seabed water pipes, and pipe mounting device |
| CN203213265U (en) * | 2013-03-21 | 2013-09-25 | 交通运输部天津水运工程科学研究所 | Anti-corrosive diffuser for deepsea sewage discharging |
-
2013
- 2013-03-21 CN CN2013100917336A patent/CN103174214A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09310998A (en) * | 1996-05-23 | 1997-12-02 | Toshiba Corp | Sea water flowing equipment and its maintenance and repairing method |
| CN201475517U (en) * | 2009-08-07 | 2010-05-19 | 天华化工机械及自动化研究设计院 | Anti-corrosion tube with inner epoxy powder and outer three-layer PE composite coating |
| CN201610992U (en) * | 2010-02-04 | 2010-10-20 | 中国海洋石油总公司 | Ocean engineering epoxy-copolymer bottom rubber anti-corrosive counterweight tube |
| CN102560503A (en) * | 2010-12-30 | 2012-07-11 | 中国海洋石油总公司 | Sacrificial anode assembly |
| CN102705579A (en) * | 2012-06-25 | 2012-10-03 | 王运章 | Mounting method for seabed water pipes, and pipe mounting device |
| CN203213265U (en) * | 2013-03-21 | 2013-09-25 | 交通运输部天津水运工程科学研究所 | Anti-corrosive diffuser for deepsea sewage discharging |
Non-Patent Citations (1)
| Title |
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| 赵毅山等: "污水排海扩散器优化设计", 《中国给水排水》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498994A (en) * | 2013-10-18 | 2014-01-08 | 中国海洋石油总公司 | Single-chip type sacrificial anode capable of preventing submarine pipeline from being corroded |
| CN104482315A (en) * | 2014-12-23 | 2015-04-01 | 江苏省常熟环通实业有限公司 | Corrosion-resistant special steel pipe |
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Application publication date: 20130626 |