CN104694140A - Ring wrapping leakage treatment method of coke oven bridge pipe - Google Patents
Ring wrapping leakage treatment method of coke oven bridge pipe Download PDFInfo
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- CN104694140A CN104694140A CN201510107622.9A CN201510107622A CN104694140A CN 104694140 A CN104694140 A CN 104694140A CN 201510107622 A CN201510107622 A CN 201510107622A CN 104694140 A CN104694140 A CN 104694140A
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- Prior art keywords
- coke oven
- metal platen
- bridge pipe
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- bridge tube
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
- C10B27/06—Conduit details, e.g. valves
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B29/00—Other details of coke ovens
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of overhaul of coke oven bridge pipes, and provides a ring wrapping leakage treatment method of a coke oven bridge pipe. The ring wrapping leakage treatment method comprises the following steps of: cutting a metal pressure plate according to the length of a crack of the bridge pipe; bending the cut metal pressure plate, so that the radian of an inner bending surface is identical to that of the outside surface of the bridge pipe at the crack position; respectively welding a section of arc-shaped connecting part at each of two ends of the metal pressure plate so that the metal pressure plate and the two arc-shaped connecting parts form a wrapping sleeve; modulating a high-temperature resistant adhesive; uniformly smearing the adhesive to the crack position of the bridge pipe; sleeving and pressing the wrapped metal pressure plate at the crack position of the bridge pipe so that the metal pressure plate wraps the crack and is firmly adhered to the bridge pipe; and fixedly connecting the arc-shaped connecting parts at two ends of the metal pressure plate together. The bridge pipe is unnecessary to cut and carry by using the ring wrapping leakage treatment method of the coke oven bridge pipe; therefore, the construction difficulty is reduced; the repair time is shortened; the repaired bridge pipe can be continuously used; the service cycle of the bridge pipe is increased; the production cost is saved; and the ring wrapping leakage treatment method of the coke oven bridge pipe disclosed by the invention is applied to treating leakage of pipelines in a high-temperature low-pressure or negative-pressure environment.
Description
Technical field
The present invention relates to coke oven crossover main maintenance field, especially a kind of coke oven crossover main ring guarantees to cure leakage method.
Background technology
Coke oven is a kind of continuous producing apparatus, the bridge tube of coke oven is the visual plant connecting coking chamber and effuser, it is the place of raw gas and the intersection of high and low pressure ammoniacal liquor, bridge tube is in the key position of rapid heat cycle, coal gas can reach 850 DEG C in upcast, after bridge tube place ammoniacal liquor sprays cooling, can be down to 200 ~ 300 DEG C, the temperature difference reaches more than 600 DEG C.Bridge tube is that cast iron casting is shaping, very easily ftractures and damage under rapid heat cycle condition.Because bridge tube is at high temperature by the erosion of raw gas and ammoniacal liquor, cannot soldering after bridge tube cracking, as process not in time or change, can scaling loss miscellaneous equipment after raw gas catches fire, can corrosion valve body stand and furnace retaining ironware after ammoniacal liquor flows out.
For the bridge tube of breakage, there will be a known the method being specifically designed to damaged bridge pipe of coke oven dismounting, is the Chinese invention patent of 201110319264X see the patent No..This method is that bridge tube entirety is cut off and moved away from, then changes new bridge tube, and workload is large, and shorten the work-ing life of bridge tube, implementation cost is high.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of convenience, the coke oven crossover main ring of low cost guarantees to cure leakage method.
The technical solution adopted for the present invention to solve the technical problems is: coke oven crossover main ring guarantees to cure leakage method, comprises the following steps:
A, length cutting metal platen according to bridge tube crackle, ensure that metal platen can cover crackle completely;
B, the metal platen bending that will have reduced, make the radian of its curved inner surface consistent with the bridge tube outside surface radian of cracks;
One section of arc connector is respectively welded at C, metal platen two ends after bending, and forms jacket by metal platen and two arc connectors, and ensures that the girth of jacket is equal to bridge tube girth;
D, modulate resistant to elevated temperatures caking agent;
E, by the cracks of caking agent uniform application at bridge tube, guarantee caking agent cover crackle;
F, the metal platen cover of jacket is pressed in the cracks of bridge tube, and make metal platen wrap up crackle and bonding with bridge tube firmly;
G, the arc connector at metal platen two ends to be connected and fixed.
Further, in step D, by clay chamotte, high-temperature cement water mixing and stirring, caking agent is made.
Further, the quality proportion of described clay chamotte, high-temperature cement and water is respectively: 10%-15%, 35%-40% and 45%-55%.
Further, described metal platen is iron plate.
Further, in step, the iron plate thickness of cutting is 3mm.
Further, described arc connector is band steel.
Further, in step C, the end of two band steels processes the boss perpendicular to periphery, and the through hole that machining center overlaps on the boss of two band steels respectively; In step G, with bolt through two through hole and and nut screw connection, band steel is connected and fixed.
Further, before step e, with scoop or iron plate, the tar of crackle and periphery thereof is cleaned out.
Further, in step e, first by caking agent preheating, then smear.
Further, after step G, the caking agent exceeding metal platen scope is cleaned out, with remaining caking agent, jointing process is carried out to metal platen periphery.
The invention has the beneficial effects as follows: by smearing caking agent in bridge tube cracks, crackle is filled up, and crackle wraps up by the bonding radian metal platen consistent with bridge tube cylindrical, utilize arc connector by fixing for metal platen machinery more further, effectively prevent raw gas and ammoniacal liquor leaks from cracks.Modulate resistant to elevated temperatures caking agent, the adhesive effect under hot conditions can be ensured, prevent metal platen from loosening.This coke oven crossover main ring guarantees to cure leakage method does not need cutting, carrying bridge tube, reduces difficulty of construction, shortens the repairing time; Bridge tube after repairing can continue to use, and adds the life cycle of bridge tube, has saved production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of jacket of the present invention;
Fig. 2 is that the present invention controls leakage schematic diagram to bridge tube transverse crack;
Fig. 3 is that the present invention controls leakage schematic diagram to bridge tube longitudinal crack;
Fig. 4 is that the present invention controls leakage schematic diagram to bridge tube shear crack.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, coke oven crossover main ring of the present invention guarantees to cure leakage method, comprises the following steps:
A, length cutting metal platen 1 according to bridge tube crackle 3, ensure that metal platen 1 can cover crackle 3 completely;
B, metal platen 1 bending that will have reduced, make the radian of its curved inner surface consistent with the bridge tube outside surface radian at crackle 3 place;
One section of arc connector 2 is respectively welded at C, metal platen 1 two ends after bending, and forms jacket by metal platen 1 and two arc connectors 2, and ensures that the girth of jacket is equal to bridge tube girth;
D, modulate resistant to elevated temperatures caking agent;
E, by crackle 3 place of caking agent uniform application at bridge tube, guarantee caking agent cover crackle 3;
F, the metal platen 1 of jacket cover is pressed in crackle 3 place of bridge tube, and make metal platen 1 wrap up crackle 3 and bonding with bridge tube firmly;
G, the arc connector 2 at metal platen 1 two ends to be connected and fixed.
For the ease of the cambered surface precision that bending and guarantee bend, the thickness of metal platen 1 is unsuitable excessive; During cutting, the length of metal platen 1 comparatively long about the 100mm of crackle 3 length, width at about 100 ~ 150mm.Because bridge tube works under the high temperature conditions, therefore, modulate resistant to elevated temperatures caking agent, the adhesive effect under hot conditions can be ensured, prevent metal platen 1 from loosening.Caking agent is smeared and is wanted that thickness is even, speed is fast, suitably can exceed the coverage rate of metal platen 1, and smear appropriate to the occasion thick unsuitable thin, the problems such as pug layering, appear in excessively thin caking agent moisture evaporation block.When metal platen 1 cover is pressed in bonding plane, should not presses too tight, avoid moistening pug all to extrude.The repairing of bridge tube is controlled and Lou should be carried out in the coking non-phase of the corresponding coke oven of pending bridge tube, first closes the high and low pressure ammoniacal liquor of the corresponding coke oven of pending bridge tube, prevents security incident; After controlling and leakage completing, wait for that caking agent in metal platen 1 opens the high and low pressure ammoniacal liquor of this heat (batch) number after fully sintered again, ensure to control leakage effect.By smearing caking agent at bridge tube crackle 3 place, crackle 3 is filled up, and crackle 3 to wrap up by the bonding radian metal platen 1 consistent with bridge tube cylindrical, more further by fixing for metal platen 1 machinery, effectively having prevented raw gas and ammoniacal liquor leaks from crackle 3.This coke oven crossover main ring is guaranteed to cure leakage method and is applicable to control leakage to bridge tube transverse crack, longitudinal crack and irregular crackle, and suitability is strong; And do not need cutting, carrying bridge tube, reduce difficulty of construction; Bridge tube after repairing can continue to use, and adds the life cycle of bridge tube, has saved production cost.
In step D, by clay chamotte, high-temperature cement water mixing and stirring, caking agent is made.Caking agent can by high temperature resistant arbitrarily and do not have corrosive adhesives to cast iron and make as fine ore, asbestos twine, but some adhesivess are expensive, and cost is higher, and clay chamotte, high-temperature cement suitability are strong, price is low, and modulation is convenient, is conducive to cost-saving.
In step D, the quality proportion of described clay chamotte, high-temperature cement and water is respectively: 10%-15%, 35%-40% and 45%-55%.The ratio of clay chamotte, high-temperature cement and water is suitable, the bonding strength of guarantee caking agent, and moisture content is too much, and caking agent mobility is large, is not easy to smear evenly, can not ensures the thickness smeared; Moisture content is very few, and caking agent solidifies very soon, and need workman to be pressed on bridge tube by jacket cover in the short period of time, initial failure period is few, affects adhesive effect.Embodiment one: the quality proportion of clay chamotte, high-temperature cement and water is respectively 10%, 35%, 55%, metal platen 1 is about 2.8 years with the effective bonding time of bridge tube.Embodiment two: the quality proportion of clay chamotte, high-temperature cement and water is respectively 12.5%, 37.5%, 50%, metal platen 1 is about 3.5 years with the effective bonding time of bridge tube.Embodiment three: the quality proportion of clay chamotte, high-temperature cement and water is respectively 15%, 40%, 45%, metal platen 1 is about 3.1 years with the effective bonding time of bridge tube.
Described metal platen 1 is iron plate.Metal platen 1 can be steel plate, copper coin etc., and iron plate cost is minimum, draws materials conveniently.
Metal platen 1 is thinner, and brake forming more easily controls, but intensity is low, and for the ease of shaping, ensure the intensity of metal platen 1, prevent from losing efficacy under the condition of High Temperature High Pressure, in step, the iron plate thickness of cutting is 3mm simultaneously.
Described arc connector 2 is band steel.Band steel itself, with radian, does not need follow-up Bending Processing.In addition, the pipe fitting of bending also can be used as web member.
Can weld or bonding connection between two pieces of band steels 2, but welding deformation amount is large, operation inconvenience, and bonding firm not, easily come off, therefore, in step C, the end of two band steels processes the boss perpendicular to periphery, and on the boss of two band steels, processes unthreaded hole and threaded hole respectively, ensures the center superposition of unthreaded hole and threaded hole; In step G, with bolt through unthreaded hole and threaded hole and and nut screw connection, band steel is connected and fixed.
In order to ensure the adhesive effect of caking agent, preventing caking agent to be easily polluted by the external foreign matters, before step e, with scoop or iron plate, the tar of crackle and periphery thereof being cleaned out.
For avoiding the temperature difference of pug and bridge tube too large, affecting cementability, in step e, first by caking agent preheating, then smearing.
In order to ensure adhesive effect further, preventing metal platen 1 from coming off, after step G, the caking agent exceeding circular arc-shaped metal pressing plate 1 scope being cleaned out, with remaining caking agent, jointing process is carried out to the periphery of metal platen 1.
Claims (10)
1. coke oven crossover main ring guarantees to cure leakage method, it is characterized in that: comprise the following steps:
A, length cutting metal platen according to bridge tube crackle, ensure that metal platen can cover crackle completely;
B, the metal platen bending that will have reduced, make the radian of its curved inner surface consistent with the bridge tube outside surface radian of cracks;
One section of arc connector is respectively welded at C, metal platen two ends after bending, and forms jacket by metal platen and two arc connectors, and ensures that the girth of jacket is equal to bridge tube girth;
D, modulate resistant to elevated temperatures caking agent;
E, by the cracks of caking agent uniform application at bridge tube, guarantee caking agent cover crackle;
F, the metal platen cover of jacket is pressed in the cracks of bridge tube, and make metal platen wrap up crackle and bonding with bridge tube firmly;
G, the arc connector at metal platen two ends to be connected and fixed.
2. coke oven crossover main ring as claimed in claim 1 guarantees to cure leakage method, it is characterized in that: in step D, by clay chamotte, high-temperature cement water mixing and stirring, makes caking agent.
3. coke oven crossover main ring as claimed in claim 2 guarantees to cure leakage method, it is characterized in that: the quality proportion of described clay chamotte, high-temperature cement and water is respectively: 10%-15%, 35%-40% and 45%-55%.
4. the coke oven crossover main ring as described in claim 1,2 or 3 guarantees to cure leakage method, it is characterized in that: described metal platen is iron plate.
5. coke oven crossover main ring as claimed in claim 4 guarantees to cure leakage method, and it is characterized in that: in step, the iron plate thickness of cutting is 3mm.
6. coke oven crossover main ring as claimed in claim 1 guarantees to cure leakage method, it is characterized in that: described arc connector is band steel.
7. coke oven crossover main ring as claimed in claim 6 guarantees to cure leakage method, it is characterized in that: in step C, and the end of two band steels processes the boss perpendicular to periphery, and the through hole that machining center overlaps on the boss of two band steels respectively; In step G, with bolt through two through hole and and nut screw connection, band steel is connected and fixed.
8. the coke oven crossover main ring as described in claim 1-7 any one claim guarantees to cure leakage method, it is characterized in that: before step e, is cleaned out by the tar of crackle and periphery thereof with scoop or iron plate.
9. coke oven crossover main ring as claimed in claim 1 guarantees to cure leakage method, it is characterized in that: in step e, first by caking agent preheating, then smears.
10. coke oven crossover main ring as claimed in claim 1 guarantees to cure leakage method, it is characterized in that: after step G, is cleaned out by the caking agent exceeding metal platen scope, carry out jointing process with remaining caking agent to metal platen periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107622.9A CN104694140A (en) | 2015-03-12 | 2015-03-12 | Ring wrapping leakage treatment method of coke oven bridge pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107622.9A CN104694140A (en) | 2015-03-12 | 2015-03-12 | Ring wrapping leakage treatment method of coke oven bridge pipe |
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| CN104694140A true CN104694140A (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510107622.9A Pending CN104694140A (en) | 2015-03-12 | 2015-03-12 | Ring wrapping leakage treatment method of coke oven bridge pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003788A (en) * | 2015-06-12 | 2015-10-28 | 江苏永钢集团有限公司 | Repair method for burnt-red and air-leakage part of pipeline |
Citations (5)
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| JPH0979785A (en) * | 1995-09-08 | 1997-03-28 | Wab Hitachi Eng Service Kk | Tube end part protecting structure |
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| CN101967619A (en) * | 2010-11-01 | 2011-02-09 | 成都东丽补强科技有限公司 | Method for reinforcement repair of pipeline by using metal hot spraying and fibrous composite |
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| CN103382395A (en) * | 2013-07-31 | 2013-11-06 | 马钢(集团)控股有限公司 | Thermal-state lining repairing method for coke oven ascending pipes and spray repairing material thereof |
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2015
- 2015-03-12 CN CN201510107622.9A patent/CN104694140A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| JPH0979785A (en) * | 1995-09-08 | 1997-03-28 | Wab Hitachi Eng Service Kk | Tube end part protecting structure |
| CN1505723A (en) * | 2001-05-03 | 2004-06-16 | 韩国套筒科技株式会社 | Non-excavating type apparatus for repairing pipe and repair method thereof |
| CN101967619A (en) * | 2010-11-01 | 2011-02-09 | 成都东丽补强科技有限公司 | Method for reinforcement repair of pipeline by using metal hot spraying and fibrous composite |
| CN102423824A (en) * | 2011-10-19 | 2012-04-25 | 四川省达州钢铁集团有限责任公司 | Disassembly method of damaged bridge pipe of coke oven |
| CN103382395A (en) * | 2013-07-31 | 2013-11-06 | 马钢(集团)控股有限公司 | Thermal-state lining repairing method for coke oven ascending pipes and spray repairing material thereof |
Non-Patent Citations (2)
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| 杨宏彪: "浅谈焦炉生产中桥管开裂的几种处理方法", 《民营科技》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003788A (en) * | 2015-06-12 | 2015-10-28 | 江苏永钢集团有限公司 | Repair method for burnt-red and air-leakage part of pipeline |
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Application publication date: 20150610 |
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