CN101813310A - Hyperbolic type abrasion-proof cover plate - Google Patents
Hyperbolic type abrasion-proof cover plate Download PDFInfo
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- CN101813310A CN101813310A CN 201010128685 CN201010128685A CN101813310A CN 101813310 A CN101813310 A CN 101813310A CN 201010128685 CN201010128685 CN 201010128685 CN 201010128685 A CN201010128685 A CN 201010128685A CN 101813310 A CN101813310 A CN 101813310A
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- cover plate
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- upper cover
- heat pipe
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Abstract
The invention discloses a hyperbolic type abrasion-proof cover plate, which is arranged on a windward side of a heated tube in a boiler tube bundle, wherein the radius of the heated tube is r, the transverse pitch of the boiler tube bundle is s1, and the longitudinal pitch of the boiler tube bundle is s2. the abrasion-proof cover plate comprises a left upper cover plate, a right upper cover plate, a left wing plate, a right wing plate and a transition plate, wherein the left upper cover plate and the right upper cover plate are arranged on two sides of the front part of the windward side of the heated tube respectively and are arranged symmetrically based on a center line of the heated tube; the front ends of the left upper cover plate and the right upper cover plate are connected with each other through the transition plate; the back end of the left upper cover plate is connected with the left wing plate; the back end of the right upper cover plate is connected with the right wing plate; the left wing plate and the right wing plate are arranged symmetrically based on the center line of the heated tube; the outlines of the left upper cover plate and the right upper cover plate are in hyperbolic forms of x2/a2-y2/b2=1; and the hyperbolic parameter a of the outline of the left upper cover plate is equal to s1/2 and the hyperbolic parameter b2 of the outline of the right upper cover plate is equal to (a+r)2-a2. The transition plate is in tapered transition, flat transition or arc transition. The hyperbolic type abrasion-proof cover plate has the advantages of actively reducing abrasions, prolonging the service life of the abrasion-proof cover plate and the like.
Description
Technical field
The present invention relates to a kind of hyperbolic type abrasion-proof cover plate, be used to protect boiler tube bundle to prevent ash cutting, belong to field of engineering technology.
Background technology
The high-temperature flue gas that contains dust (air) waste heat that discharges such as cement kiln, the hot stove in ore deposit, sintering machine just is being fully utilized in recent years, and these high-temperature flue gas are sent into waste heat boiler, can produce high-temperature steam and be used for generating.But these high-temperature flue gas all contain the flue gas of a large amount of dusts, particularly cement kiln, and dust content is at 50g/m
3More than, the flue gas that contains the high concentration dust has had a strong impact on the service life of waste heat boiler to the wearing and tearing that waste heat boiler is heated and restrains, and has shortened the time between overhauls(TBO).In order to reduce dust in the flue gas, often arrange abrasion-proof cover plate at the flue gas flow path direction of meeting of former combs of heat pipe tube bank, but the wearing and tearing of this abrasion-proof cover plate are also very serious to the wearing and tearing of heat pipe.
At present, being used for the cover plate that ash-laden gas washes away the shoe of tube bank (boiler superheater, economizer, air preheater etc.) and mostly being semicircle or bad circular arc, mainly is that the pipe thickness that equivalence improves easily-worn position is resisted wearing and tearing.Adopt the speed of fairshaped abrasion-proof cover plate design can reduction wearing and tearing, prolong cover plate service life.Publication number is that the patent documentation of CN 2148892Y has proposed a kind of streamlined Antiwear casing that is used for air preheater, can protect the wearing and tearing of air preheater entrance.Publication number is that the patent documentation of CN2469323 discloses a kind of boiler tube bundle shoe that is used for, adopt 3 groups independently the abrasionproof pipe protect boiler tube bundle, but it does not remove to solve wear problem from flow behavior itself.At the erosive wear of high dust flue gas to tube bank, prior art exists deficiency and defectives such as the own characteristics of not considering to flow, passive abrasionproof, shoe and cover plate life-span weak point.
Summary of the invention
The objective of the invention is to overcome existing passive abrasionproof, short defective of shoe life-span, a kind of hyperbolic type abrasion-proof cover plate that is applicable to waste heat boiler tube bank shoes such as cement kiln, the hot stove in ore deposit, sintering machine is provided, thus the service life of improving shoe.
The present invention is achieved through the following technical solutions: a kind of hyperbolic type abrasion-proof cover plate, and what be arranged on heat pipe in the boiler tube bundle meets the dust-contained airflow direction, and the radius of heat pipe is r, and the boiler tube bundle transverse pitch is s
1, longitudinal pitch is s
2Described abrasion-proof cover plate comprises upper left cover plate, upper right cover plate, left wing plate, right wing plate and rebound, upper left cover plate and upper right cover plate are separately positioned on the front part sides of heat pipe windward side, with heat pipe center line symmetric arrangement, upper left cover plate links to each other with rebound with upper right cover forward end, upper left cover plate rear end links to each other with left wing plate, and tie point is the point of contact of upper left cover plate and heat pipe; Upper right cover plate rear end links to each other with right wing plate, and tie point is the point of contact of upper right cover plate and heat pipe; Described left wing plate and right wing plate are with heat pipe center line symmetric arrangement; The profile of upper left cover plate of described hyperbolic type abrasion-proof cover plate and upper right cover plate is x
2/ a
2-y
2/ b
2=1 hyperbolic-type; The profile hyperbola parameter a=s of upper left cover plate and upper right cover plate
1/ 2, b
2=(a+r)
2-a
2
In the technique scheme, rebound is pointed transition, flat transition or arc transition.
The present invention compared with prior art, have the following advantages and beneficial effect: hyperbolic type abrasion-proof cover plate is owing to adopted the profile of hyperbolic-type, make that the flue gas circulation passage between adjacent two cover plates is a hyperbolic type, the streamline that fluid flows overlaps with trace is approximate, can initiatively reduce wearing and tearing, prolong the service life of abrasion-proof cover plate.
Description of drawings
Fig. 1 is that hyperbola abrasion-proof cover plate provided by the present invention is arranged schematic diagram.
Fig. 2 is that the cover plate outline line of hyperbola abrasion-proof cover plate involved in the present invention forms schematic diagram.
Fig. 3 is hyperbolic type abrasion-proof cover plate schematic diagram provided by the present invention (a is the pointed transition cover plate in top, and b is the flat transition cover plate in top, and c is a top arc transition cover plate).
Among the figure: the 1-heat pipe; The 2-hyperbolic type abrasion-proof cover plate; The 3-ash-laden gas; Upper right of 4-hyperbola; The upper left cover plate of 8-; The pointed transition of 9-; The upper right cover plate of 10-; The 11-left wing plate; The 12-right wing plate; The flat transition of 13-; The 14-arc transition.
The specific embodiment
Describe concrete structure of the present invention, operation principle and embodiment in detail below in conjunction with accompanying drawing:
Fig. 1 is that hyperbolic type abrasion-proof cover plate provided by the present invention is arranged schematic diagram, and the tube bank of ash-laden gas 3 transversal flows, tube bank are arranged by heat pipe 1 and constituted, and transverse pitch is s
1, longitudinal pitch is s
2, hyperbolic type abrasion-proof cover plate 2 is installed on first three row's of tube bank the heat pipe 1.
Fig. 2 is that the cover plate outline line of hyperbola abrasion-proof cover plate involved in the present invention forms schematic diagram, and coordinate is respectively x axle and y axle, and O is the origin of coordinates, determines can determine this hyp shape after summit and the focal coordinates.Fig. 3 is a hyperbolic type abrasion-proof cover plate schematic diagram provided by the present invention, described abrasion-proof cover plate comprises upper left cover plate 8, upper right cover plate 10, left wing plate 11, right wing plate 12 and rebound, upper left cover plate and upper right cover plate are separately positioned on the both sides, front portion (is preceding with the windward side) of heat pipe 1, with heat pipe 1 center line symmetric arrangement, upper left cover plate 8 links to each other with rebound with upper right cover plate 10 front ends, upper left cover plate 8 rear ends link to each other with left wing plate 11, tie point is the point of contact of upper left cover plate 8 and heat pipe 1, also is simultaneously the point of contact of left wing plate 11 and heat pipe 1; Upper right cover plate 10 rear ends link to each other with right wing plate 12, and tie point is the point of contact of upper right cover plate 8 and heat pipe 1, also are simultaneously the point of contacts of right wing plate 11 and heat pipe 1; Described left wing plate 11 and right wing plate 12 are with heat pipe 1 center line symmetric arrangement.The outline line of wherein upper left cover plate 8 and upper right cover plate 10 is a hyperbolic-type, and this hyp normal equation is x
2/ a
2-y
2/ b
2=1, the length of real semiaxis a and imaginary semi-axis b is determined by the arrangement of tube bank and the radius of heat pipe, is satisfied: a=s
1/ 2, b
2=(a+r)
2-a
2, half apex coordinate in the hyp right side is (s
1/ 2,0), focal coordinates (s
1/ 2+r, 0).Form upper right half the 4 profile line style that constitutes upper left cover plate 8 of hyperbolic type abrasion-proof cover plate and upper right cover plate 10 of hyperbola of hyperbolic type abrasion-proof cover plate upper cover plate profile.Can be pointed transition 9, flat transition 13 or arc transition 14 between upper left cover plate 8, the upper right cover plate 10.Left wing plate 11 links to each other with upper right cover plate 10 with upper left cover plate 8 respectively with right wing plate 12, and the height h of left wing plate 11 and right wing plate 12 approximates the radius r of heat pipe 1.
A specific embodiment is: boiler heat pipe external diameter 38mm, transverse pitch s
1=180mm, longitudinal pitch s
2=90mm then constitutes the hyperbola parameter a=90mm of this hyperbolic type abrasion-proof cover plate, b=61.5.In order effectively to reduce wearing and tearing, adopt arc transition between the left and right upper cover plate, transition arc radius 5mm.The height of left wing plate and right wing plate is 19mm.Utilize the design's hyperbolic type abrasion-proof cover plate, because the trace of the dust when making flow of flue gas in the flue gas overlaps with the streamline of flue gas is approximate, reduced the direct impact of dust to hyperbolic type abrasion-proof cover plate, can improve the service life of abrasion-proof cover plate, also have simultaneously to utilize and reduce the resistance that ash-laden gas flows through tube bank, reduce operation and maintenance cost.
Claims (2)
1. hyperbolic type abrasion-proof cover plate, what be arranged on heat pipe in the boiler tube bundle (1) meets dust-contained airflow (3) direction, and the radius of heat pipe (1) is r, and the boiler tube bundle transverse pitch is s
1, longitudinal pitch is s
2It is characterized in that: described abrasion-proof cover plate comprises upper left cover plate (8), upper right cover plate (10), left wing plate (11), right wing plate (12) and rebound, upper left cover plate and upper right cover plate are separately positioned on the front part sides of heat pipe (1) windward side, with heat pipe (1) center line symmetric arrangement, upper left cover plate (8) links to each other with rebound with upper right cover plate (10) front end, upper left cover plate (8) rear end links to each other with left wing plate (11), and tie point is the point of contact of upper left cover plate (8) and heat pipe (1); Upper right cover plate (10) rear end links to each other with right wing plate (12), and tie point is the point of contact of upper right cover plate (10) and heat pipe (1); Described left wing plate (11) and right wing plate (12) are with heat pipe (1) center line symmetric arrangement; The profile of upper left cover plate of described hyperbolic type abrasion-proof cover plate (8) and upper right cover plate (10) is x
2/ a
2-y
2/ b
2=1 hyperbolic-type; The profile hyperbola parameter a=s of upper left cover plate (8) and upper right cover plate (10)
1/ 2, b
2=(a+r)
2-a
2
2. hyperbolic type abrasion-proof cover plate according to claim 1 is characterized in that: described rebound is pointed transition (9), flat transition (13) or arc transition (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128685XA CN101813310B (en) | 2010-03-19 | 2010-03-19 | Hyperbolic type abrasion-proof cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010128685XA CN101813310B (en) | 2010-03-19 | 2010-03-19 | Hyperbolic type abrasion-proof cover plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101813310A true CN101813310A (en) | 2010-08-25 |
| CN101813310B CN101813310B (en) | 2011-11-30 |
Family
ID=42620628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010128685XA Expired - Fee Related CN101813310B (en) | 2010-03-19 | 2010-03-19 | Hyperbolic type abrasion-proof cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101813310B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322550A (en) * | 2013-07-10 | 2013-09-25 | 江苏海德节能科技有限公司 | Anti-abrasion device of low temperature coal economizer |
| CN114923177A (en) * | 2022-06-15 | 2022-08-19 | 清华大学 | Dual-medium TFB gasification incinerator and method for implementing waste gasification incineration |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000065488A (en) * | 1998-08-18 | 2000-03-03 | Ishikawajima Harima Heavy Ind Co Ltd | Hardwearing structure of heat transfer tube for fluidized bed boiler |
| JP2000240901A (en) * | 1999-02-22 | 2000-09-08 | Kawasaki Steel Corp | Boiler water tube group, and boiler |
| US20060008394A1 (en) * | 2002-11-05 | 2006-01-12 | Kouji Muramoto | Exhaust gas treating apparatus |
| US7066242B1 (en) * | 2004-12-23 | 2006-06-27 | David Ranville | Sacrificial refractory shield assembly for use on a boiler tube |
| CN2802285Y (en) * | 2005-06-29 | 2006-08-02 | 吕文祥 | Protection tilt for pipe of circuilation fluidized bed coal fired boiler |
| CN201636836U (en) * | 2010-03-19 | 2010-11-17 | 昆明阳光基业股份有限公司 | Hyperbolic-curve type anti-wear cover plate |
-
2010
- 2010-03-19 CN CN201010128685XA patent/CN101813310B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000065488A (en) * | 1998-08-18 | 2000-03-03 | Ishikawajima Harima Heavy Ind Co Ltd | Hardwearing structure of heat transfer tube for fluidized bed boiler |
| JP2000240901A (en) * | 1999-02-22 | 2000-09-08 | Kawasaki Steel Corp | Boiler water tube group, and boiler |
| US20060008394A1 (en) * | 2002-11-05 | 2006-01-12 | Kouji Muramoto | Exhaust gas treating apparatus |
| US7066242B1 (en) * | 2004-12-23 | 2006-06-27 | David Ranville | Sacrificial refractory shield assembly for use on a boiler tube |
| CN2802285Y (en) * | 2005-06-29 | 2006-08-02 | 吕文祥 | Protection tilt for pipe of circuilation fluidized bed coal fired boiler |
| CN201636836U (en) * | 2010-03-19 | 2010-11-17 | 昆明阳光基业股份有限公司 | Hyperbolic-curve type anti-wear cover plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322550A (en) * | 2013-07-10 | 2013-09-25 | 江苏海德节能科技有限公司 | Anti-abrasion device of low temperature coal economizer |
| CN103322550B (en) * | 2013-07-10 | 2015-08-19 | 江苏海德节能科技有限公司 | A kind of Anti-abrasion device of low temperature coal economizer |
| CN114923177A (en) * | 2022-06-15 | 2022-08-19 | 清华大学 | Dual-medium TFB gasification incinerator and method for implementing waste gasification incineration |
| CN114923177B (en) * | 2022-06-15 | 2024-03-01 | 清华大学 | Double-medium TFB gasification incinerator and method for implementing waste gasification incineration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101813310B (en) | 2011-11-30 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUNNAN SUNWISE ENERGY MANAGEMENT + CONTROL TECHNOL Free format text: FORMER OWNER: KUNMING SUNLIGHT JIYE CO.,LTD Effective date: 20140515 |
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Free format text: CORRECT: ADDRESS; FROM: 650202 KUNMING, YUNNAN PROVINCE TO: 650500 KUNMING, YUNNAN PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140515 Address after: 650500 Xiangyang Road, information industry base, Kunming economic and Technological Development Zone, Yunnan Patentee after: Yunnan sunshine foundation energy control technology Limited by Share Ltd Address before: 650202 No. 212, Kam Kam Road, Shibei District, Yunnan, Kunming Patentee before: Kunming Sunlight Jiye Co.,Ltd |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20170319 |