CN104180367A - Slagging tube of fluidized-bed boiler - Google Patents
Slagging tube of fluidized-bed boiler Download PDFInfo
- Publication number
- CN104180367A CN104180367A CN201410424997.3A CN201410424997A CN104180367A CN 104180367 A CN104180367 A CN 104180367A CN 201410424997 A CN201410424997 A CN 201410424997A CN 104180367 A CN104180367 A CN 104180367A
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- pipe
- water inlet
- water outlet
- cooling tube
- tube
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Abstract
The invention discloses a slagging tube of a fluidized-bed boiler, which comprises a membrane type cooler as an annular cooling tube stack circled by a plurality of cooling tubes, and the inner side of the annular cooling tube stack is coated with a wear-resistant and heat-resistant castable; each cooling tube is further communicated with a water inlet main pipe and a water outlet main pipe respectively, the water inlet main pipe is communicated with a condensation water inlet pipe, and the water outlet main pipe is communicated with a condensation water outlet pipe. Or, the slagging tube comprises a slagging round tube and a plurality of cooling tubes arranged on the wall of the slagging round tube in the circumferential direction of the slagging round tube; each cooling tube is further communicated with a water inlet main pipe and a water outlet main respectively, the water inlet main pipe is communicated with a condensation water inlet pipe, and the water outlet main pipe is communicated with a condensation water outlet pipe. According to the invention, the traditional slagging tube is replaced by the cooling tubes, the slagging tube is prevented from generating thermal deformation which causes welding seam tearing, and the temperature of an outer wall of the slagging tube achieves a safe value. The work environment of the slagging tube is improved, so that the fluidized-bed boiler can operate more safely and stably.
Description
Technical field
The present invention relates to a kind of scum pipe, be specifically related to a kind of slag discharge pipe of fluidized bed boiler.
Background technology
Scum pipe be CFBB slag-drip opening to the connecting pipe between slag cooler, use material is high-temperature alloy steel pipe, outside without insulation.CFBB Hot slag temperature is generally at 900 DEG C, and because slag temperature is higher, scum pipe outside wall temperature is greater than 50 DEG C, causes thermal loss, when serious, can cause thermal deformation to tear weld seam, causes flame, spray slag leakage failure, affects personal security and boiler operatiopn.In the time of unit operation, the Electrically operated gate designing on scum pipe is owing to bearing stronger hyperthermia radiation, and internal electronic element damages frequent, affects Electrically operated gate and normally works.
Summary of the invention
The object of the present invention is to provide a kind of slag discharge pipe of fluidized bed boiler, solved scum pipe and easily occurred that thermal deformation tears weld seam, the problem that service life is shorter, and can make the Electrically operated gate relating on scum pipe normally work.
In order to achieve the above object, the slag discharge pipe of fluidized bed boiler that the present invention adopts comprises the Baudelot type cooler as annular cooling conduit group being surrounded by some cooling tubes, and on the inner side of annular cooling conduit group, scribbles antiwear heat resisting castable; Each cooling tube is also connected with the female pipe of water inlet and main water outlet pipe respectively, and female pipe of water inlet be connected with condensate water inlet channel, and main water outlet pipe is connected with condensate water outlet conduit.
Some cooling tubes adopt the one in following two kinds of connected modes to surround annular cooling conduit group:
The first connected mode: in annular cooling conduit group, adjacent cooling tube connects by fin;
The second connected mode: annular cooling conduit group is made up of the some groups of cooling tubes that link together by fin, two adjacent groups annular cooling conduit group connects by flange or bolt.
In the time adopting the first connected mode, each fin is fixed antiwear heat resisting castable by bitch; In the time adopting the second connected mode, each fin and flange are all fixed antiwear heat resisting castable by bitch, or each fin and screw are all fixed antiwear heat resisting castable by bitch.
Described bitch is Y-shaped structure, and in the time adopting the first connected mode, the root weld of bitch is on fin; In the time adopting the second connected mode, the root of bitch is welded on respectively on fin and flange, or the root of bitch is welded on respectively on fin and screw.
Described condensate water inlet channel is provided with into water motor regulated valve and water inlet stop valve along condensate water flow path direction; Condensate water outlet conduit is provided with water outlet stop valve and water outlet motor regulated valve along condensate water flow path direction.
Described condensate water inlet channel is connected with the female pipe of water inlet by water supply hose or water inlet steel pipe, and female pipe of intaking is connected with corresponding cooling tube by some water inlet pipes; Condensate water outlet conduit is connected with main water outlet pipe by delivery hose or water outlet steel pipe, and main water outlet pipe is connected with corresponding cooling tube by some exit branch, and each cooling tube adopts cylindric steel pipe or helical form steel pipe.
A kind of slag discharge pipe of fluidized bed boiler, comprises deslagging pipe and is circumferentially located at the some cooling tubes on deslagging tube wall along deslagging pipe; Each cooling tube is also connected with the female pipe of water inlet and main water outlet pipe respectively, and female pipe of water inlet be connected with condensate water inlet channel, and main water outlet pipe is connected with condensate water outlet conduit.
Each cooling tube is fixed on deslagging pipe by fin, and each cooling tube adopts cylindric steel pipe or helical form steel pipe.
Described condensate water inlet channel is provided with into water motor regulated valve and water inlet stop valve along condensate water flow path direction; Condensate water outlet conduit is provided with water outlet stop valve and water outlet motor regulated valve along condensate water flow path direction.
Described condensate water inlet channel is connected with the female pipe of water inlet by water supply hose or water inlet steel pipe, and female pipe of intaking is connected with corresponding cooling tube by some water inlet pipes; Condensate water outlet conduit is connected with main water outlet pipe by delivery hose or water outlet steel pipe, and main water outlet pipe is connected with corresponding cooling tube by some exit branch.
Compared with prior art, beneficial effect of the present invention is:
The first technical scheme of the present invention is that traditional deslagging pipe annular cooling conduit that antiwear heat resisting layer is built in inner side is replaced, and antiwear heat resisting layer can be avoided the wearing and tearing of warm sludge to cooling tube, simultaneously, annular cooling conduit group in the first technical approach of the present invention is surrounded by some cooling tubes, generally the annular cooling conduit group of this structure is called to membrane type cooling tube, the second technical scheme is that some cooling tubes are arranged in to deslagging pipe is circumferential; The first arrangement can make outside wall temperature as the annular cooling conduit group of scum pipe in safe range, the second arrangement makes the outside wall temperature of traditional scum pipe in safe range, prevent from causing because outside wall temperature is too high scum pipe flexural deformation, avoid scum pipe and boiler slag removal mouth or slag cooler interface to occur that weld seam tears, reduce scum pipe repair and maintenance expense, guarantee personnel and unit safety; Cooling tube reclaims deslagging heat, reduces radiation loss, improves unit efficiency; Improve scum pipe working environment, reduce scum pipe material service rating, save equipment investment; Scum pipe outside wall temperature reduces, thereby reduces secondary Electrically operated gate radiation intensity on scum pipe, is conducive to the safe operation of secondary Electrically operated gate on scum pipe, solve existing scum pipe outside wall temperature higher, thermal loss is large, and scum pipe easily occurs that thermal deformation tears weld seam, the problem that service life is shorter.
Brief description of the drawings
Fig. 1 is the top view of the first technical scheme of the present invention;
Fig. 2 is that the A-A face of Fig. 1 of the present invention partly cuts open front view;
Fig. 3 is the top view of the second technical scheme of the present invention;
Fig. 4 is water inlet of the present invention or water outlet schematic diagram;
Wherein, 1, cooling tube, 2, fin, 3, antiwear heat resisting castable, 4, bitch, 5, deslagging pipe, 6, condensate water inlet channel, 7, water inlet motor regulated valve, 8, water inlet stop valve, 9, the female pipe of water inlet, 10, water inlet pipe, 11, water supply hose.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Fig. 1,2 and 4, the first technical scheme of slag discharge pipe of fluidized bed boiler of the present invention comprises that some cooling tubes 1 surround annular cooling conduit group, generally this structure is called to Baudelot type cooler, and each cooling tube 1 adopts cylindric steel pipe or helical form steel pipe.On the inner side of annular cooling conduit group, scribble antiwear heat resisting castable 3; Cooling tube 1 can use the materials such as carbon steel, and cooling tube 1 quantity can be carried out reasonable Arrangement according to the quantity of slag, slag temperature etc.Antiwear heat resisting castable 3 can be used the material of the antiwear heat resisting such as phosphate, carborundum performance;
Each cooling tube 1 is also connected with the female pipe 9 of water inlet and main water outlet pipe respectively, and the female pipe of water inlet is connected with condensate water inlet channel 6, and main water outlet pipe is connected with condensate water outlet conduit.
Wherein, condensate water inlet channel 6 is provided with into water motor regulated valve 7 and water inlet stop valve 8 along condensate water flow path direction; Condensate water inlet channel 6 is connected with the female pipe 9 of water inlet by water supply hose 11 or water inlet steel pipe; The female pipe 9 of water inlet is connected with corresponding cooling tube 1 by some water inlet pipes 10; Condensate water outlet conduit is provided with water outlet stop valve and water outlet motor regulated valve along condensate water flow path direction.Condensate water outlet conduit is connected with main water outlet pipe by delivery hose or water outlet steel pipe, and main water outlet pipe is connected with corresponding cooling tube 1 by some exit branch.The main water outlet pipe of the female pipe 10 of cooling tube water inlet and cooling tube adopts semi-circumference, circumference, rectangular arrangement.Condensate water outlet conduit is connected with main water outlet pipe by delivery hose or water outlet steel pipe, main water outlet pipe is connected with corresponding cooling tube 1 by some exit branch, and water inlet motor regulated valve 7 and water inlet cut-off gate 8 are for regulating the condensing water flow that enters cooling tube 1.
Some cooling tubes 1 adopt the one in following two kinds of connected modes to surround annular cooling conduit group:
The first connected mode: adjacent cooling tube 1 is connected to form annular cooling conduit group (being that in annular cooling conduit group, adjacent cooling tube 1 connects by fin 2) by fin 2; Each fin 2 is by the fixing antiwear heat resisting castable 3 of bitch 4 of Y-shaped structure, and the root weld of bitch 4 is on fin 2.
The second connected mode: some cooling tubes 1 are divided into some groups, every group of cooling tube 1 is joined together to form cooling tube group (being that annular cooling conduit group is made up of the some groups of cooling tubes that link together by fin 2 1) by fin 2, some groups of cooling tube groups connect into annular cooling conduit group by flange or bolt, each fin 2 and flange are all by the fixing antiwear heat resisting castable 3 of bitch 4, or each fin 2 and screw are all by the fixing antiwear heat resisting layer of bitch 4, bitch 4 is Y-shaped structure, the root of bitch 4 is welded on respectively on fin 2 and flange, or the root of bitch 4 is welded on respectively on fin 2 and screw.
Membrane type cooling tube of the present invention is to connect in the mode of segmented, is first divided into some groups with some cooling fins, between the cooling fin of every group is adjacent, connects with fin 2, between each group, connects into suitable length with flange; Can also be divided into first and be linked to be many valves cooling tube with fin 2, then be connected to annular cooling conduit group with bolt.In addition, what need to say is that the root of bitch 4 has a termination, and the head of bitch has two terminations.
The working method of the first technical scheme of the present invention is: fluid bed warm sludge by boiler slag removal mouth in the time that scum pipe (scum pipe that even dry cooling tube 1 and antiwear heat resisting castable 3 form) enters slag cooler, condensate water is by condensate water inlet channel 6, water supply hose 11 (or water inlet steel pipe) enters in the female pipe 8 of water, the female pipe 9 of water inlet is assigned to corresponding cooling tube by each water inlet pipe 9, the heat of warm sludge is transmitted in condensate water by antiwear heat resisting castable 3 and cooling tube 1, condensate water is pooled to main water outlet pipe by each exit branch, condensate water in main water outlet pipe is flowed out and has reached the object that warm sludge is lowered the temperature from condensate water outlet conduit by delivery hose or water outlet steel pipe.In addition, the flow direction of condensate water in cooling tube 1 can be from top to bottom, also can be from bottom to top.
Referring to Fig. 3 and 4, the second technical scheme of slag discharge pipe of fluidized bed boiler of the present invention comprises traditional deslagging pipe 5 and is circumferentially located at the some cooling tubes 1 on deslagging pipe 5 tube walls along deslagging pipe 5; Each cooling tube 1 adopts cylindric steel pipe or helical form steel pipe, and each cooling tube 1 is crossed fin 2 and is weldingly fixed on the outer wall of deslagging pipe 5, and cooling tube 1 can use the materials such as carbon steel; Cooling tube 1 quantity can be carried out reasonable Arrangement according to the quantity of slag, slag temperature etc., and this arrangement can cooling scum pipe 5, improves scum pipe 5 working environments, improves safety in operation.On original scum pipe, transform, reduce retrofit work amount, reduce improvement expenses.Each cooling tube 1 is also connected with the female pipe 9 of water inlet and main water outlet pipe respectively, and the female pipe of water inlet is connected with condensate water inlet channel 6, and main water outlet pipe is connected with condensate water outlet conduit.
Wherein, condensate water inlet channel 6 is provided with into water motor regulated valve 7 and water inlet stop valve 8 along condensate water flow path direction; Condensate water inlet channel 6 is connected with the female pipe 9 of water inlet by water supply hose 11 or water inlet steel pipe; The female pipe 9 of water inlet is connected with corresponding cooling tube 1 by some water inlet pipes 10; Condensate water outlet conduit is provided with water outlet stop valve and water outlet motor regulated valve along condensate water flow path direction.Condensate water outlet conduit is connected with main water outlet pipe by delivery hose or water outlet steel pipe, and main water outlet pipe is connected with corresponding cooling tube 1 by some exit branch.The main water outlet pipe of the female pipe 10 of cooling tube water inlet and cooling tube adopts semi-circumference, circumference, rectangular arrangement.Condensate water outlet conduit is connected with main water outlet pipe by delivery hose or water outlet steel pipe, main water outlet pipe is connected with corresponding cooling tube 1 by some exit branch, and water inlet motor regulated valve 7 and water inlet cut-off gate 8 are for regulating the condensing water flow that enters cooling tube 1.
The working method of the second technical scheme of the present invention is: fluid bed warm sludge by boiler slag removal mouth in the time that scum pipe (being deslagging pipe) enters slag cooler, condensate water is by condensate water inlet channel 6, water supply hose 11 (or water inlet steel pipe) enters in the female pipe 8 of water, the female pipe 9 of water inlet is assigned to corresponding cooling tube by each water inlet pipe 9, the heat of warm sludge is transmitted in condensate water by cooling tube 1, condensate water is pooled to main water outlet pipe by each exit branch, condensate water in main water outlet pipe is flowed out and has reached the object that warm sludge is lowered the temperature from condensate water outlet conduit by delivery hose or water outlet steel pipe.In addition, the flow direction of condensate water in cooling tube 1 can be from top to bottom, also can be from bottom to top.
The invention has the beneficial effects as follows: the outside wall temperature that reduces scum pipe, prevent from causing because outside wall temperature is too high scum pipe flexural deformation, avoid scum pipe and boiler slag removal mouth or slag cooler interface to occur that weld seam tears, reduce scum pipe repair and maintenance expense, guarantee personnel and unit safety; Cooling tube reclaims deslagging heat, reduces radiation loss, improves unit efficiency; Improve scum pipe working environment, reduce scum pipe material service rating, save equipment investment; Scum pipe outside wall temperature reduces, thereby reduces secondary Electrically operated gate radiation intensity on scum pipe, is conducive to the safe operation of secondary Electrically operated gate on scum pipe.
Claims (10)
1. a slag discharge pipe of fluidized bed boiler, is characterized in that: comprise the Baudelot type cooler as annular cooling conduit group being surrounded by some cooling tubes (1), and on the inner side of annular cooling conduit group, scribble antiwear heat resisting castable (3); Each cooling tube (1) is also connected with the female pipe of water inlet (9) and main water outlet pipe respectively, and female pipe of water inlet be connected with condensate water inlet channel (6), and main water outlet pipe is connected with condensate water outlet conduit.
2. slag discharge pipe of fluidized bed boiler according to claim 1, is characterized in that: some cooling tubes (1) adopt the one in following two kinds of connected modes to surround annular cooling conduit group:
The first connected mode: in annular cooling conduit group, adjacent cooling tube (1) connects by fin (2);
The second connected mode: annular cooling conduit group is made up of the some groups of cooling tubes (1) that link together by fin (2), two adjacent groups annular cooling conduit group connects by flange or bolt.
3. slag discharge pipe of fluidized bed boiler according to claim 2, is characterized in that: in the time adopting the first connected mode, each fin (2) is by the fixing antiwear heat resisting castable (3) of bitch (4); In the time adopting the second connected mode, each fin (2) and flange be all by the fixing antiwear heat resisting castable (3) of bitch (4), or each fin (2) and screw are all fixed antiwear heat resisting castable (3) by bitch (4).
4. slag discharge pipe of fluidized bed boiler according to claim 3, is characterized in that: described bitch (4) is Y-shaped structure, and in the time adopting the first connected mode, the root weld of bitch (4) is on fin (2); In the time adopting the second connected mode, the root of bitch (4) is welded on respectively on fin (2) and flange, or the root of bitch (4) is welded on respectively on fin (2) and screw.
5. slag discharge pipe of fluidized bed boiler according to claim 1, is characterized in that: described condensate water inlet channel (6) is provided with into water motor regulated valve (7) and water inlet stop valve (8) along condensate water flow path direction; Condensate water outlet conduit is provided with water outlet stop valve and water outlet motor regulated valve along condensate water flow path direction.
6. slag discharge pipe of fluidized bed boiler according to claim 1, it is characterized in that: described condensate water inlet channel (6) is connected with the female pipe of water inlet (9) by water supply hose (11) or water inlet steel pipe, and the female pipe of water inlet (9) is connected with corresponding cooling tube (1) by some water inlet pipes (10); Condensate water outlet conduit is connected with main water outlet pipe by delivery hose or water outlet steel pipe, main water outlet pipe is connected with corresponding cooling tube (1) by some exit branch, and each cooling tube (1) adopts cylindric steel pipe or helical form steel pipe.
7. a slag discharge pipe of fluidized bed boiler, is characterized in that: comprise deslagging pipe (5) and be circumferentially located at the some cooling tubes (1) on deslagging pipe (5) tube wall along deslagging pipe (5); Each cooling tube (1) is also connected with the female pipe of water inlet (9) and main water outlet pipe respectively, and female pipe of water inlet be connected with condensate water inlet channel (6), and main water outlet pipe is connected with condensate water outlet conduit.
8. slag discharge pipe of fluidized bed boiler according to claim 7, it is characterized in that: it is upper that each cooling tube (1) is fixed on deslagging pipe (5) by fin (2), and each cooling tube (1) adopts cylindric steel pipe or helical form steel pipe.
9. slag discharge pipe of fluidized bed boiler according to claim 7, is characterized in that: described condensate water inlet channel (6) is provided with into water motor regulated valve (7) and water inlet stop valve (8) along condensate water flow path direction; Condensate water outlet conduit is provided with water outlet stop valve and water outlet motor regulated valve along condensate water flow path direction.
10. slag discharge pipe of fluidized bed boiler according to claim 7, it is characterized in that: described condensate water inlet channel (6) is connected with the female pipe of water inlet (9) by water supply hose (11) or water inlet steel pipe, and the female pipe of water inlet (12) is connected with corresponding cooling tube (1) by some water inlet pipes (10); Condensate water outlet conduit is connected with main water outlet pipe by delivery hose or water outlet steel pipe, and main water outlet pipe is connected with corresponding cooling tube (1) by some exit branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424997.3A CN104180367A (en) | 2014-08-26 | 2014-08-26 | Slagging tube of fluidized-bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424997.3A CN104180367A (en) | 2014-08-26 | 2014-08-26 | Slagging tube of fluidized-bed boiler |
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| CN104180367A true CN104180367A (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410424997.3A Pending CN104180367A (en) | 2014-08-26 | 2014-08-26 | Slagging tube of fluidized-bed boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588107A (en) * | 2016-01-26 | 2016-05-18 | 山西国峰煤电有限责任公司 | Deslagging waste heat utilization device for circulating fluidized bed boiler |
| CN107062209A (en) * | 2017-05-22 | 2017-08-18 | 清华大学 | A kind of air-cooled deslagging device of circulating fluidized bed boiler |
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| CN2690750Y (en) * | 2004-04-06 | 2005-04-06 | 无锡华光锅炉股份有限公司 | Water cooling jacket type slag discharge pipe |
| CN2793566Y (en) * | 2005-05-25 | 2006-07-05 | 宋志安 | Cold-slag residue extraction equipment |
| CN101660759A (en) * | 2009-09-14 | 2010-03-03 | 四川龙麟锅炉设备有限责任公司 | Film-type water-cooling lining wear-resistant plastic slag-roughing device |
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| CN103629527A (en) * | 2012-08-27 | 2014-03-12 | 余显玉 | Anti-abrasive ore pulp conveying pipeline |
| CN103696419A (en) * | 2013-12-20 | 2014-04-02 | 中国一冶集团有限公司 | Pile foundation construction fabricated casing and using method thereof |
| CN203744243U (en) * | 2014-03-04 | 2014-07-30 | 刘红霞 | Slag discharge device for wear-resistant water-cooled circulating fluidized bed boiler |
| CN204042880U (en) * | 2014-08-26 | 2014-12-24 | 西安热工研究院有限公司 | A kind of slag discharge pipe of fluidized bed boiler |
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2014
- 2014-08-26 CN CN201410424997.3A patent/CN104180367A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799257A (en) * | 1968-04-18 | 1974-03-26 | Neratoom | Heat exchanger |
| CN2690750Y (en) * | 2004-04-06 | 2005-04-06 | 无锡华光锅炉股份有限公司 | Water cooling jacket type slag discharge pipe |
| CN2793566Y (en) * | 2005-05-25 | 2006-07-05 | 宋志安 | Cold-slag residue extraction equipment |
| CN101660759A (en) * | 2009-09-14 | 2010-03-03 | 四川龙麟锅炉设备有限责任公司 | Film-type water-cooling lining wear-resistant plastic slag-roughing device |
| CN201866779U (en) * | 2010-08-30 | 2011-06-15 | 四川龙麟锅炉设备有限责任公司 | Buried-pipe type water-cooling lining wear-resistant material slag roughing device |
| CN103629527A (en) * | 2012-08-27 | 2014-03-12 | 余显玉 | Anti-abrasive ore pulp conveying pipeline |
| CN103696419A (en) * | 2013-12-20 | 2014-04-02 | 中国一冶集团有限公司 | Pile foundation construction fabricated casing and using method thereof |
| CN203744243U (en) * | 2014-03-04 | 2014-07-30 | 刘红霞 | Slag discharge device for wear-resistant water-cooled circulating fluidized bed boiler |
| CN204042880U (en) * | 2014-08-26 | 2014-12-24 | 西安热工研究院有限公司 | A kind of slag discharge pipe of fluidized bed boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588107A (en) * | 2016-01-26 | 2016-05-18 | 山西国峰煤电有限责任公司 | Deslagging waste heat utilization device for circulating fluidized bed boiler |
| CN107062209A (en) * | 2017-05-22 | 2017-08-18 | 清华大学 | A kind of air-cooled deslagging device of circulating fluidized bed boiler |
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Application publication date: 20141203 |
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