CN101935736B - Water-cooling movable smoke hood - Google Patents
Water-cooling movable smoke hood Download PDFInfo
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- CN101935736B CN101935736B CN 201010271404 CN201010271404A CN101935736B CN 101935736 B CN101935736 B CN 101935736B CN 201010271404 CN201010271404 CN 201010271404 CN 201010271404 A CN201010271404 A CN 201010271404A CN 101935736 B CN101935736 B CN 101935736B
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- petticoat pipe
- gas hood
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Abstract
The invention provides a water-cooling movable smoke hood. The water-cooling movable smoke hood comprises an upper part smoke hood and a lower part smoke hood, the upper part smoke hood and the lower part smoke hood respectively comprise a plurality of annular water cooling pipes which are laminated together, a water inlet pipe and a water outlet pipe, the annular water cooling pipe is communicated with the water inlet pipe by virtue of a water inlet branch pipe and is communicated with the water outlet pipe by virtue of a water outlet branch pipe, a plurality of annular water cooling pipes of the upper part smoke hood and a plurality of annular water cooling pipes of the lower part smoke hood form a straight barrel shaped or cone shaped structure which is open up and down. By adopting the technical scheme of the invention, the water cooling movable smoke hood is divided into the upper part smoke hood and the lower part smoke hood, the upper part smoke is heavily woven after being used for a period of time, and only the upper part smoke is required to be replaced in short-term maintenance. Thus, the water cooling movable smoke hood of the invention can reduce work load of maintenance, save maintenance time and improve the efficiency of converter.
Description
Technical field
The present invention relates to the water-cooled movable gas hood.
Background technology
In order to collect the flue gas that steel-making produces, fixing petticoat pipe is being housed above the converter and is being arranged on the fixedly movable gas hood between the petticoat pipe and converter usually.Flue gas is through movable gas hood and fixedly get into cooling stack or waste heat boiler behind the petticoat pipe to utilize used heat, gets into then and purifies cooling system.Being provided with of movable gas hood mainly is used for maximizing furnace gas and the products of combustion thereof of collection from the fire door ejection, just these furnace gases and products of combustion thereof is directed to fixedly in the petticoat pipe to greatest extent.Particularly, but the movable gas hood free lifting, thus according to the up-down of converter, reducing movable gas hood and the fixing gap size between the petticoat pipe as far as possible, thereby avoid flue gas to leak as far as possible at the TP adjustment movable gas hood in when operation.
Converter movable hood is generally watercooled hood; The range upon range of welded seal of circular pipe that watercooled hood is generally rolled into by a plurality of water cooling tubes (Low Carbon Steel Pipe); Cylindric to form, wherein each water cooling tube is through water-inlet header (water inlet pipe) with go out water manifold (rising pipe) and be connected with water coolant.The temperature of the flue gas that converter steelmaking produces is up to 1100～1400 ℃, contains a large amount of dust such as gas such as CO, CO2, N2, S and high temperature sludge, abrasive grit, lime.Because receive the high temperature corrosion that multiple solid dust washes away and gas produces, movable gas hood is in bad working environment, thereby the tube wall of water cooling tube receives the burn into wearing and tearing and obvious attenuate.In addition; Since the gap of converter blowing, the sometimes hot and sometimes cold effect that receives temperature variation of the tube wall of water cooling tube, the heat fatigue cracking of a large amount of ring shapes of generation on tube wall for a long time; The liquid slag that in addition splashes and the high temperature impact of molten iron, movable gas hood are prone to produce pit even perforation is leaked.Therefore, the work-ing life of revolving furnace fume hood is very short, have only about 1 year, and casualty ratio of accidents is very high in lifetime, often maintenance.
Summary of the invention
Contriver of the present invention adopts laser thickness gauge that the movable gas hood that uses in producing is carried out thickness measuring, finds to be corroded, to corrode, to wash away the top that weakest link is positioned at movable gas hood in the movable gas hood.For example, be that 55mm, thickness are that 20 pots of steel of 5mm are processed water cooling tube by external diameter, and form movable gas hoods with 24 layers of this water cooling tubes welding, use half a year after, the tube wall attenuation of the 1st to the 12nd layer of water cooling tube from top to bottom of The measured results show movable gas hood.Wherein the tube wall attenuation of the 1st to the 6th layer of water cooling tube is the most serious, and thinnest part has only about 1-2mm and defectives such as perforation, crackle occur.
For solving the problems of the technologies described above; The present invention provides a kind of water-cooled movable gas hood; Wherein, This water-cooled movable gas hood comprises top petticoat pipe and bottom petticoat pipe; Said top petticoat pipe and said bottom petticoat pipe comprise a plurality of annular water cooling tubes that are superimposed together, a water inlet pipe and a rising pipe separately, and each said annular water cooling tube is communicated with water inlet pipe and passes through an exit branch through a water inlet arm and is communicated with rising pipe, and a plurality of annular water cooling tube of top petticoat pipe forms the straight tubular or the cone barrel structure of upper and lower opening with a plurality of annular water cooling tube of bottom petticoat pipe.
Through technique scheme of the present invention, the water-cooled movable gas hood is divided into top petticoat pipe and bottom petticoat pipe, after using for some time, the wearing and tearing of top petticoat pipe are comparatively serious, only need change the top petticoat pipe when safeguarding in a short time and get final product.Therefore, water-cooled movable gas hood of the present invention can alleviate the workload of maintenance, practices thrift maintenance time, has improved the functioning efficiency of converter.
Other features and advantages of the present invention will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification sheets, is used to explain the present invention with embodiment of the present invention, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic perspective view of the structure of explanation movable gas hood of the present invention;
Fig. 2 is the top view of the movable gas hood of explanatory view 1;
Fig. 3 is the structural representation of the water cooling tube of explanation movable gas hood of the present invention.
Description of reference numerals
1a: water cooling tube 1b: water inlet arm 1c: exit branch
2a: the water inlet pipe 2b of top petticoat pipe: the water inlet pipe of bottom petticoat pipe
3a: the rising pipe 3b of top petticoat pipe: the rising pipe of bottom petticoat pipe
4: flange 5: sealed steam house steward 6: the sealed steam arm
Embodiment
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.Should be understood that embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
Water-cooled movable gas hood of the present invention comprises top petticoat pipe and bottom petticoat pipe; Said top petticoat pipe and said bottom petticoat pipe comprise a plurality of annular water cooling tube 1a, a water inlet pipe and rising pipes that are superimposed together separately; Each said annular water cooling tube 1a is communicated with water inlet pipe and passes through an exit branch 1c through a water inlet arm 1b and is communicated with rising pipe, and a plurality of annular water cooling tube 1a of top petticoat pipe forms the straight tubular or the cone barrel structure of upper and lower opening with a plurality of annular water cooling tube 1a of bottom petticoat pipe.
For the ease of explanation, the water inlet pipe and the rising pipe of top petticoat pipe are represented that with Reference numeral 2a and 3a the water inlet pipe of bottom petticoat pipe and rising pipe are represented with Reference numeral 2b and 3b.
Preferably, annular water cooling tube 1a can be integrally formed with water inlet arm 1b and exit branch 1c.As shown in Figure 3, water inlet arm 1b and exit branch 1c stretch out from water cooling tube 1a.For the ease of arranging, water inlet arm 1b and exit branch 1c are provided with on the contrary.In addition; For the ease of being connected with water inlet pipe 2a, 2b and rising pipe 3a, 3b; Can make range upon range of a plurality of water inlet arm 1b all be arranged on a side and water inlet pipe 2a, 2b are arranged on this side (the for example left side among Fig. 2), a plurality of exit branch 1c all are arranged on opposite side and rising pipe 3a, 3b are arranged on this side (the for example right side among Fig. 2).
In each of said top petticoat pipe and said bottom petticoat pipe, the range upon range of sealing setting of a plurality of water cooling tube 1a for example can be connected together in the sealing weld of range upon range of ground, thereby makes top petticoat pipe and each self-forming of bottom petticoat pipe be roughly the cylindrical shell shape.The bottom petticoat pipe is arranged on petticoat pipe below, top, thereby makes water-cooled movable gas hood integral body of the present invention also roughly form cylindrical shell shape (straight barrel shape or cone barrel shape).After using for some time, if the top petticoat pipe washes away serious wear because of burn into, the top petticoat pipe that only need more renew can return to normal production apace.The top that in other words, only need replace the top petticoat pipe of wearing and tearing with new top petticoat pipe and be arranged on the bottom petticoat pipe can be accomplished and changed operation.
Top petticoat pipe and bottom petticoat pipe can be through separately water inlet pipe and rising pipe provide and discharge water coolant to separately water cooling tube 1a.In this case, need be respectively the top petticoat pipe and the bottom petticoat pipe is provided with water-supply line and discharge pipe line etc.In a kind of preferred implementation of the present invention; The water inlet pipe 2b of the water inlet pipe 2a of said top petticoat pipe and said bottom petticoat pipe is tightly connected and is interconnected, and the rising pipe 3b of the rising pipe 3a of said top petticoat pipe and said bottom petticoat pipe is tightly connected and is interconnected.Through this layout; Can to the water inlet pipe 2a of top petticoat pipe or the water inlet pipe 2b of said bottom petticoat pipe water coolant be provided through shared water-supply line, and through the rising pipe 3a of said top petticoat pipe or the water coolant of rising pipe 3b after shared discharge pipe line discharging is used of said bottom petticoat pipe.For example, can make the water inlet pipe 2a of upper smoke cover be connected in shared water-supply line, and make the rising pipe 3b of bottom petticoat pipe be connected in shared discharge pipe line.But those skilled in the art also can adopt other mode of connection to realize the supply and the discharging of water coolant.
In addition; Can dock the water inlet pipe 2a of the said top of installation petticoat pipe and the water inlet pipe 2b and the butt joint of said bottom petticoat pipe the rising pipe 3a of said top petticoat pipe and the rising pipe 3b of said bottom petticoat pipe are installed, thereby the top petticoat pipe more firmly is arranged on the top of bottom petticoat pipe.Preferably, the water inlet pipe 2a of said top petticoat pipe and the water inlet pipe 2b of said bottom petticoat pipe removably are connected, the rising pipe 3a of said top petticoat pipe removably is connected with the rising pipe 3b of said bottom petticoat pipe.Thereby can be easy for removal and installation when changing the top petticoat pipe.In a kind of embodiment of the present invention; As depicted in figs. 1 and 2; The water inlet pipe 2b that advances arm 2a and said bottom petticoat pipe of said top petticoat pipe is connected with screw element through flange 4, and the rising pipe 3a of said top petticoat pipe is connected with screw element through flange 4 with the rising pipe 3b of said bottom petticoat pipe.Those skilled in the art also can adopt alternate manner to realize above-mentioned removably installation.In addition; The water inlet pipe 2b that advances arm 2a and said bottom petticoat pipe that also can make said top petticoat pipe is through being welded to connect; Need only when removing the top petticoat pipe weld is cut; Likewise, the rising pipe 3b of the rising pipe 3a of said top petticoat pipe and said bottom petticoat pipe also can be through being welded to connect.
Top petticoat pipe and bottom petticoat pipe can have the identical or different water cooling tube 1a of quantity as required.Though research according to contriver of the present invention; For example in 24 range upon range of water cooling tube 1a; 6 layers of water cooling tube 1a that have only top need periodic replacement because of serious wear, but have enough intensity in order to ensure each water cooling tube 1a near the top of water-cooled movable gas hood of the present invention, and for space that attended operation is provided convenient operation; Preferably, said top petticoat pipe and said bottom petticoat pipe have the said water cooling tube 1a of equal amts separately.In other words, through when safeguarding, changing the security that half the water cooling tube 1a guarantees said water-cooled movable gas hood.Wherein, the quantity of water cooling tube 1a can be according to material and the size Selection of water cooling tube 1a.Water cooling tube 1a can use the steel pipe with suitable wear resistance and suitable intensity to process.For example, when using external diameter to process water cooling tube 1a as 55mm, thickness as 20 pots of steel of 5mm, top petticoat pipe and bottom petticoat pipe can have the water cooling tube 1a of 12 range upon range of settings separately.
Among the present invention; As long as the top petticoat pipe firmly is arranged on petticoat pipe top, bottom; Also can be tightly connected and be communicated with water inlet pipe 2a and 2b through above-mentioned; And be tightly connected and be communicated with rising pipe 3a and 3b strengthens firm effect, go up and get final product but the water cooling tube 1a of top petticoat pipe bottom only need be placed on the water cooling tube 1a at petticoat pipe top, bottom.Preferably, the water cooling tube 1a of petticoat pipe bottom, said top and the water cooling tube 1a at petticoat pipe top, said bottom fit together basically hermetically.
Preferably, as depicted in figs. 1 and 2, said annular water cooling tube 1a is an annular, thereby whole water-cooled movable gas hood forms cylinder or taper barrel shape, to be suitable for the form fit with converter mouth, is convenient to be sealed and matched.
Along the short transverse of said water-cooled movable gas hood, the annular size of said water cooling tube 1a increases from the top down gradually.Through this layout, can make whole water-cooled movable gas hood form the cone barrel shape, thereby be convenient to when the guiding flue gas with fume centralized, conveniently to collect and the flue gas of collection is directed in the fixedly petticoat pipe that is arranged on water-cooled movable gas hood top easily.
When the ring-type size of water cooling tube 1a increased from the top down gradually, from the top down, can radially outwards squint in water inlet arm 1b that stretches out from water cooling tube 1a and the position of exit branch 1c.Therefore, in order to be communicated with, from the top down, need to increase the length of water inlet arm 1b and exit branch 1c with water inlet pipe and rising pipe.
For increasing the length of water inlet arm 1b and exit branch 1c as few as possible; Keep stable center of gravity when perhaps forming straight tubular water-cooled movable gas hood at the measure-alike of annular water cooling tube 1a; In preferred implementation illustrated in figures 1 and 2, the axis of said water inlet pipe 2a, 2b and said rising pipe 3a, 3b is substantially parallel with the outside surface of said straight tubular or cone barrel structure.When said water-cooled movable gas hood is the cone barrel shape; Axis through making said water inlet pipe 2a, 2b and said rising pipe 3a, 3b is substantially parallel with the outside surface of cone barrel structure; The size of water cooling tube 1a above being positioned at is less, but the length of water inlet arm 1b and exit branch 1c is bigger; The size of water cooling tube 1a below being positioned at is bigger, but the length of water inlet arm 1b and exit branch 1c is less.Thereby can make whole water-cooled activity flue have stable structure more.
In addition; In order to seal said water-cooled movable gas hood and the fixing gap between the petticoat pipe, said water-cooled movable gas hood also comprises annular air-supply duct 5, and this annular air-supply duct 5 is arranged on the top of said top petticoat pipe; This annular air-supply duct 5 has inlet mouth and a plurality of arm 6; One end of each said arm 6 is communicated in said annular air-supply duct 5, and the other end is open towards the inside of said water-cooled movable gas hood, and a plurality of said arms 6 are provided with along the circumferential interval of said annular air-supply duct 5.
During use; The gas of certain flow (for example 3.1-3.5 ton/hour) and pressure (for example 0.5-0.6MPa) can be provided the inlet mouth of annular air-supply duct 5 through corresponding supply air line; This gas sprays through the other end of arm 6; Make the flue gas in the water-cooled movable gas hood concentrate, thereby prevent that flue gas from outwards scattering and from water-cooled movable gas hood and the fixing clearance leakage between the petticoat pipe towards the center.
In order to realize good sealing effectiveness through gas, the gas that arm 6 sprays should be able to cover the cyclic inner edge of annular air-supply duct 5.For this reason, should select the arm 6 of proper amt and size and make it with the proper spacing setting.For example, when annular air-supply duct 5 is an annular, and the inner edge diameter of this annular can be provided with 185-200 arm 6 along this inner edge equal angles compartment of terrain when being 3700-3800mm.
In addition, the annular air-supply duct 5 of appropriate size can be selected as required, when enough gas is provided, keeping enough intensity, thereby arm 6 can be supported.
In order further to prevent smoke spillage, need guarantee fitting tightly of sealed steam device and top petticoat pipe as far as possible, therefore, said annular air-supply duct 5 shape and the open-topped shape of said top petticoat pipe be complementary.
Need to prove that each the concrete technical characterictic described in above-mentioned embodiment can carry out arbitrary combination through any suitable manner, it falls within the disclosed scope of the present invention equally.In addition, also can carry out arbitrary combination between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention equally.
More than combine accompanying drawing to describe preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned embodiment; In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.For example, can water-supply line and discharge pipe line be connected to the water inlet pipe 2a and the rising pipe 3a of top petticoat pipe, perhaps water-supply line and discharge pipe line be connected to the water inlet pipe 2b and the rising pipe 3b of bottom petticoat pipe.
Claims (11)
1. water-cooled movable gas hood; It is characterized in that this water-cooled movable gas hood comprises top petticoat pipe and bottom petticoat pipe, said top petticoat pipe and said bottom petticoat pipe comprise a plurality of annular water cooling tubes (1a) that are superimposed together, a water inlet pipe (2a separately; 2b) with a rising pipe (3a; 3b), (2a 2b) is communicated with and through an exit branch (1c) and rising pipe (3a each said annular water cooling tube (1a) through a water inlet arm (1b) and water inlet pipe; 3b) be communicated with, a plurality of annular water cooling tube (1a) of top petticoat pipe forms the straight tubular or the cone barrel structure of upper and lower opening with a plurality of annular water cooling tube (1a) of bottom petticoat pipe.
2. water-cooled movable gas hood according to claim 1; Wherein, The water inlet pipe (2a) of said top petticoat pipe and the water inlet pipe (2b) of said bottom petticoat pipe are tightly connected and are interconnected, and the rising pipe (3a) of said top petticoat pipe and the rising pipe (3b) of said bottom petticoat pipe are tightly connected and are interconnected.
3. water-cooled movable gas hood according to claim 2; Wherein, The water inlet pipe (2a) of said top petticoat pipe and the water inlet pipe (2b) of said bottom petticoat pipe removably are connected, and the rising pipe (3a) of said top petticoat pipe and the rising pipe (3b) of said bottom petticoat pipe removably are connected.
4. water-cooled movable gas hood according to claim 3; Wherein, The water inlet pipe (2a) of said top petticoat pipe and the water inlet pipe (2b) of said bottom petticoat pipe are connected with screw element through flange (4), and the rising pipe (3a) of said top petticoat pipe and the rising pipe (3b) of said bottom petticoat pipe are connected with screw element through flange (4).
5. water-cooled movable gas hood according to claim 1, wherein, said top petticoat pipe and said bottom petticoat pipe have the said annular water cooling tube (1a) of equal amts separately.
6. water-cooled movable gas hood according to claim 1, wherein, in each of said top petticoat pipe and said bottom petticoat pipe, a plurality of said annular water cooling tubes (1a) weld together range upon range ofly.
7. water-cooled movable gas hood according to claim 1, wherein, the annular water cooling tube (1a) of said top petticoat pipe bottom fits together with the annular water cooling tube (1a) at petticoat pipe top, said bottom hermetically.
8. water-cooled movable gas hood according to claim 1, wherein, said annular water cooling tube (1a) is an annular.
9. water-cooled movable gas hood according to claim 1, wherein, (2a, 2b) (3a, axis 3b) is parallel with the outside surface of said straight tubular or cone barrel structure with said rising pipe for said water inlet pipe.
10. according to any described water-cooled movable gas hood among the claim 1-9; Wherein, Said water-cooled movable gas hood also comprises annular air-supply duct (5); This annular air-supply duct (5) is arranged on the top of said top petticoat pipe, and this annular air-supply duct (5) has inlet mouth and a plurality of arm (6), and an end of each said arm (6) is communicated in said annular air-supply duct (5); The other end is open towards the inside of said water-cooled movable gas hood, and a plurality of said arms (6) are provided with along the circumferential interval of said annular air-supply duct (5).
11. water-cooled movable gas hood according to claim 10, wherein, the open-topped shape of the shape of said annular air-supply duct (5) and said top petticoat pipe is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010271404 CN101935736B (en) | 2010-09-03 | 2010-09-03 | Water-cooling movable smoke hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010271404 CN101935736B (en) | 2010-09-03 | 2010-09-03 | Water-cooling movable smoke hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101935736A CN101935736A (en) | 2011-01-05 |
| CN101935736B true CN101935736B (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010271404 Expired - Fee Related CN101935736B (en) | 2010-09-03 | 2010-09-03 | Water-cooling movable smoke hood |
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| Country | Link |
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| CN (1) | CN101935736B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476558Y (en) * | 2001-04-19 | 2002-02-13 | 唐山钢铁集团有限责任公司 | Evaporation cooling device of steelmaking converter |
| CN2910956Y (en) * | 2006-06-12 | 2007-06-13 | 江阴海陆冶金设备制造有限公司 | Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter |
| CN101566434A (en) * | 2009-06-10 | 2009-10-28 | 北京明诚技术开发有限公司 | Converter movable hood flexible ring mechanical sealing device and sealing method |
-
2010
- 2010-09-03 CN CN 201010271404 patent/CN101935736B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2476558Y (en) * | 2001-04-19 | 2002-02-13 | 唐山钢铁集团有限责任公司 | Evaporation cooling device of steelmaking converter |
| CN2910956Y (en) * | 2006-06-12 | 2007-06-13 | 江阴海陆冶金设备制造有限公司 | Coiled-pipe air-seal type active chimney of evaporated cooling flue of steelmaking converter |
| CN101566434A (en) * | 2009-06-10 | 2009-10-28 | 北京明诚技术开发有限公司 | Converter movable hood flexible ring mechanical sealing device and sealing method |
Non-Patent Citations (1)
| Title |
|---|
| 成立良等.炼钢转炉烟气的回收利用技术.《炼钢转炉烟气的回收利用技术》.1991,19-21. * |
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| CN101935736A (en) | 2011-01-05 |
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Granted publication date: 20120829 Termination date: 20160903 |