CN205208590U - 60 pi type boiler air preheater flue gas exit structure and coal -fired unit below ten thousand grades - Google Patents
60 pi type boiler air preheater flue gas exit structure and coal -fired unit below ten thousand grades Download PDFInfo
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- CN205208590U CN205208590U CN201521073563.XU CN201521073563U CN205208590U CN 205208590 U CN205208590 U CN 205208590U CN 201521073563 U CN201521073563 U CN 201521073563U CN 205208590 U CN205208590 U CN 205208590U
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- flue
- air preheater
- gas outlet
- exhanst gas
- flue tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a 60 pi type boiler air preheater flue gas exit structure and coal -fired unit below ten thousand grades, 60 air preheater flue gas exit structure below ten thousand grades includes the air preheater, connects casing and flue pipe. The air preheater has the exhanst gas outlet. Be provided with the passageway in the connection casing. Connect casing one end and link to each other with the air preheater, connect the casing other end and be equipped with two round outlet. Flue pipe cross section is circularly. The flue pipe is two, two flue pipes and two round outlet one -to -ones. The tip shape of flue pipe suits with the round outlet shape, and the tip of flue pipe is linked together with round outlet. The utility model discloses the flue pipe is extremely succinctly changed from the flue space layout form that the air preheater exhanst gas outlet was connected to the deduster smoke entry. In addition, the flue gas is at the intraductal resistance to motion of flue to reduce and draw fan energy consumption. Secondly, the material consumption of flue pipe can reduce about 50 percent for the rectangular flue for greatly reduce initial investment.
Description
Technical field
The utility model relates to coal unit technical field, especially relates to less than 600,000 grades π type boiler air preheater exhanst gas outlet structures and coal unit.
Background technology
Refer to Fig. 1, Fig. 1 illustrates the air preheater 10 exhanst gas outlet structure chart of 600,000 grades of coal unit boilers in prior art.Air preheater 10 exhanst gas outlet of 600000 grades of coal unit boilers is connected to deduster by rectangle smoke box 11, rectangular flue 12, and gas is discharged outside to by the flue gas that coal unit boiler like this produces after air preheater 10 exhanst gas outlet after deduster dust removal process again.Wherein, the exhanst gas outlet of air preheater 10 is arranged vertically downward, and exhanst gas outlet is connected with rectangle smoke box 11, and rectangle smoke box 11 side mouth connects rectangular flue 12, is connected with deduster by rectangular flue 12.But there is following defect in rectangular flue 12 design:
1, rectangle smoke box 11 and rectangular flue 12 take a sudden turn situation time, easily cause flue gas in flue VELOCITY DISTRIBUTION uneven, eddy region is obvious, and cause that flue Oscillation Amplitude is large, noise is large in flue, security and stability is lower.
2, flue gas friction loss when rectangular flue 12 is large, makes coal unit air-introduced machine energy consumption large.
3, rectangle smoke box 11 place dust stratification is serious, needs regular deashing, makes to add human cost.
4, rectangular flue 12 material consumption is large, makes initial investment cost higher.
Utility model content
Based on this, the utility model is the defect overcoming prior art, provides a kind of less than 600,000 grades π type boiler air preheater exhanst gas outlet structures and coal unit, and its security and stability is higher, can reduce coal unit air-introduced machine energy consumption, and cost is lower.
Its technical scheme is as follows:
A kind of less than 600,000 grades π type boiler air preheater exhanst gas outlet structures, comprising: air preheater, described air preheater has exhanst gas outlet; Connect housing, described connection housing is connected with described air preheater, described connection housing is provided with passage, described passage includes cigarette port and smoke port, described enter cigarette port and described exhanst gas outlet adapt, and described in enter cigarette port and be connected with described exhanst gas outlet, described smoke port is two round exits; And flue tube, described flue tube is connected with the described housing that is connected, the cross section at any place of described flue tube is circle, described flue tube is two, two flue tubes and two round exit one_to_one corresponding, end shape and the described round exit shape of described flue tube adapt, and the end of described flue tube is connected with described round exit.
A kind of less than 600,000 grades coal unit, comprising: air preheater, described air preheater has exhanst gas outlet; Connect housing, described connection housing is connected with described air preheater, described connection housing is provided with passage, described passage includes cigarette port and smoke port, described enter cigarette port and described exhanst gas outlet adapt, and described in enter cigarette port and be connected with described exhanst gas outlet, described smoke port is two round exits; Flue tube, described flue tube is connected with the described housing that is connected, the cross section at any place of described flue tube is circle, described flue tube is two, two flue tubes and two round exit one_to_one corresponding, end shape and the described round exit shape of described flue tube adapt, and the end of described flue tube is connected with described round exit; And deduster, described deduster has two smoke inlets, two described flue tubes and two described smoke inlet one_to_one corresponding, end shape and the described smoke inlet shape of described flue tube adapt, and the end of described flue tube is connected with described smoke inlet.
Wherein in an embodiment, the size of two described round exits is identical, and the internal diameter size of two described flue tubes is identical.
Wherein in an embodiment, the length of two described flue tubes is identical, and two described flue tubes are set up in parallel.
Wherein in an embodiment, described passage comprises two square change circle structural members, described enter cigarette port be rectangular opening, described enter cigarette port on the long side direction of described rectangular opening, be divided into two square orifices, described square change circle structural member one end is described square orifice, and the described square change circle structural member other end is described circular port.
Wherein in an embodiment, described flue tube comprises bend pipe and straight pipe, and described bend pipe one end is connected with described round exit, and the described bend pipe other end is connected with described straight pipe.
Wherein in an embodiment, described connection housing, described flue tube are steel, and described connection housing welds with between described flue tube.
Wherein in an embodiment, described air preheater and described deduster are one or two.
Wherein in an embodiment, described flue tube comprises the first bend pipe, the second bend pipe, the 3rd bend pipe, the first straight pipe, the second straight pipe and the 3rd straight pipe, described first bend pipe, the first straight pipe, the second bend pipe, the second straight pipe, the 3rd bend pipe and the 3rd straight pipe are connected successively, the described first bend pipe other end is connected with described round exit, and the described 3rd straight pipe other end is connected with described smoke inlet.
Wherein in an embodiment, described smoke inlet is provided with in trumpet-shaped tube connector, and described tube connector one end is connected with described smoke inlet, and the described tube connector other end is connected with described 3rd straight pipe.
Below in conjunction with technique scheme, principle of the present utility model, effect are further illustrated:
1, less than 600,000 grades above-mentioned π type boiler air preheater exhanst gas outlet structures, because flue tube cross section is circular, make the flue being connected to deduster smoke inlet from air preheater exhanst gas outlet realize succinct space arrangement form, instead of the complex arrangement form of traditional rectangular smoke box and rectangular flue.In addition, cross section is the running resistance that circular flue tube can reduce to flue gas, can reduce unit operation resistance and be about 200Pa, thus greatly reduces air-introduced machine energy consumption.Secondly, in the application, the material consumption of flue tube can reduce about 50% relative to rectangular flue, makes greatly to reduce initial investment.
2, the flue gas in air preheater from exhanst gas outlet out after, be divided into two parts air-flow through two flue tubes, system architecture good stability in flue gas transmitting procedure.And two flue tubes are connected to two entrances of deduster respectively simultaneously, flue gas is sent in deduster through two flue tubes again.
3, in air preheater flue gas through exhanst gas outlet out after, because the diameter of passage is reduced to the direction of described round exit gradually by exhanst gas outlet, flue gas is made to transfer in flue tube process and can assembled gradually by passage, so just can improve the speed that in the exhanst gas outlet of air preheater, flue gas is discharged, and ash-collecting amount reduces greatly in flue tube, maintenance can be convenient to.
4, because air preheater and deduster are not at same plane, so by increasing bend pipe and straight pipe, adjust the syndeton of flue tube, to be adapted to the installation site of air preheater and deduster, thus replace the arrangement by rectangle smoke box and rectangular flue completely.Visible, the utility model structural arrangement form is comparatively simple, and can save material, cost is lower.
5, less than 600,000 grades above-mentioned coal unit, because flue tube cross section is circular, make the flue being connected to deduster smoke inlet from air preheater exhanst gas outlet realize succinct space arrangement form, instead of the complex arrangement form of traditional rectangular smoke box and rectangular flue.In addition, cross section is the running resistance that circular flue tube can reduce to flue gas, can reduce unit operation resistance and be about 200Pa, thus greatly reduces air-introduced machine energy consumption.Secondly, in the application, the material consumption of flue tube can reduce about 50% relative to rectangular flue, makes greatly to reduce initial investment.
Accompanying drawing explanation
Fig. 1 is less than 600,000 grades π type boiler air preheater exhanst gas outlet structural representations described in the utility model prior art;
Fig. 2 is less than 600,000 grades π type boiler air preheater exhanst gas outlet structural representations described in the utility model embodiment;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the structural representation of less than 600,000 grades coal unit described in the utility model embodiment;
Fig. 5 is the top view of less than 600,000 grades coal unit described in the utility model embodiment.
Description of reference numerals:
10, air preheater, 11, rectangle smoke box, 12, rectangular flue, 20, connect housing, 30, flue tube, 31, the first bend pipe, the 32, second bend pipe, the 33, the 3rd bend pipe, the 34, first straight pipe, 35, the second straight pipe, the 36, the 3rd straight pipe, 40, deduster, 41, tube connector.
Detailed description of the invention
Below embodiment of the present utility model is described in detail:
Refer to Fig. 2,3, less than 600,000 grades π type boiler boiler air preheater 10 exhanst gas outlet structures described in the utility model embodiment, comprise air preheater 10, connect housing 20 and flue tube 30.
Described air preheater 10 has exhanst gas outlet.Described connection housing 20 is connected with described air preheater 10, and described connection housing is provided with passage.Described passage includes cigarette port and smoke port, described in enter cigarette port and described exhanst gas outlet adapts, and described in enter cigarette port and be connected with described exhanst gas outlet.Described smoke port is two round exits.The cross section at any place of described flue tube 30 is circle.Described flue tube 30 is two, two flue tubes 30 and two round exit one_to_one corresponding.End shape and the described round exit shape of described flue tube 30 adapt, and the end of described flue tube 30 is connected with described round exit.
Less than 600,000 grades above-mentioned π type boiler air preheater exhanst gas outlet structures, because flue tube 30 cross section is circular, make the flue being connected to deduster 40 smoke inlet from air preheater 10 exhanst gas outlet realize succinct space arrangement form, instead of the complex arrangement form of traditional rectangular smoke box and rectangular flue.In addition, cross section is the running resistance that circular flue tube 30 can reduce to flue gas, can reduce unit operation resistance and be about 200Pa, thus greatly reduces air-introduced machine energy consumption.Secondly, in the application, the material consumption of flue tube 30 can reduce about 50% relative to rectangular flue, makes greatly to reduce initial investment.
Wherein, the size of two described round exits is identical, and the internal diameter size of two described flue tubes 30 is identical.The length of two described flue tubes 30 is identical, and two described flue tubes 30 are set up in parallel.Flue gas in air preheater 10 from exhanst gas outlet out after, be divided into three fraction through two flue tubes 30, system architecture good stability in flue gas transmitting procedure.And two flue tubes 30 are connected to two entrances of deduster 40 respectively simultaneously, flue gas is sent in deduster 40 through two flue tubes 30 again.
Wherein, described in enter cigarette port be rectangular opening, described in enter cigarette port on the long side direction of rectangular opening, be divided into two square orifices.Described passage comprises two square change circle structural members, two square change circle structural member, two square orifices and two circular port one_to_one corresponding.Concrete, square change circle structural member one end is described square orifice, and the square change circle structural member other end is described circular port.So, square orifice is gradually become circular port by square change circle structural member, make flue gas transfer in flue tube 30 process and can assembled gradually by square change circle structural member, and flue gas resistance is less.So just can improve the speed that in the exhanst gas outlet of air preheater 10, flue gas is discharged, and in flue tube 30, ash-collecting amount reduces greatly, maintenance can be convenient to.
Wherein, described flue tube 30 comprises bend pipe and straight pipe.Described bend pipe one end is connected with described round exit, and the described bend pipe other end is connected with described straight pipe.Described connection housing 20, described flue tube 30 are steel.Between bend pipe with straight pipe, weld mutually described connection between housing 20 with described flue tube 30.Because air preheater 10 and deduster 40 are not at same plane, so by increasing bend pipe and straight pipe, adjust the syndeton of flue tube 30, to be adapted to the installation site of air preheater 10 and deduster 40, thus replace the arrangement by rectangle smoke box and rectangular flue completely.Visible, the utility model structural arrangement form is comparatively simple, and can save material, cost is lower.
Refer to Fig. 4 or 5, less than 600,000 grades coal unit described in the utility model embodiment, comprise air preheater 10, connect housing 20, flue tube 30 and deduster 40.
Described air preheater 10 has exhanst gas outlet.Described connection housing 20 is connected with described air preheater 10, and described connection housing is provided with passage.Described passage includes cigarette port and smoke port, described in enter cigarette port and described exhanst gas outlet adapts, and described in enter cigarette port and be connected with described exhanst gas outlet.Described smoke port is two round exits.The cross section at any place of described flue tube 30 is circle.Described flue tube 30 is two, two flue tubes 30 and two round exit one_to_one corresponding.End shape and the described round exit shape of described flue tube 30 adapt, and the end of described flue tube 30 is connected with described round exit.
Described deduster 40 has two smoke inlets.Two described flue tubes 30 and two described smoke inlet one_to_one corresponding.End shape and the described smoke inlet shape of described flue tube 30 adapt, and the end of described flue tube 30 is connected with described smoke inlet.Wherein, described air preheater 10 is two with described deduster 40.
Described flue tube 30 comprises the first bend pipe 31, second bend pipe 32, the 3rd bend pipe 33, first straight pipe 34, second straight pipe 35 and the 3rd straight pipe 36.Described first bend pipe 31, first straight pipe 34, second bend pipe 32, second straight pipe 35, the 3rd bend pipe 33 and the 3rd straight pipe 36 are connected successively.Described first bend pipe 31 other end is connected with described round exit, and described 3rd straight pipe 36 other end is connected with described smoke inlet.Because air preheater 10 and deduster 40 are not at same plane, so by increasing bend pipe and straight pipe, adjust the syndeton of flue tube 30, to be adapted to the installation site of air preheater 10 and deduster 40, thus replace the arrangement by rectangle smoke box and rectangular flue completely.Visible, the utility model structural arrangement form is comparatively simple, and can save material, cost is lower.
Described smoke inlet is provided with in trumpet-shaped tube connector 41.Described tube connector 41 one end is connected with described smoke inlet, and the described tube connector other end is connected with described 3rd straight pipe 36.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. less than 600,000 grades π type boiler air preheater exhanst gas outlet structures, is characterized in that, comprising:
Air preheater, described air preheater has exhanst gas outlet;
Connect housing, described connection housing is connected with described air preheater, described connection housing is provided with passage, described passage includes cigarette port and smoke port, described enter cigarette port and described exhanst gas outlet adapt, and described in enter cigarette port and be connected with described exhanst gas outlet, described smoke port is two round exits; And
Flue tube, described flue tube is connected with the described housing that is connected, the cross section at any place of described flue tube is circle, described flue tube is two, two flue tubes and two round exit one_to_one corresponding, end shape and the described round exit shape of described flue tube adapt, and the end of described flue tube is connected with described round exit.
2. less than 600,000 grades π type boiler air preheater exhanst gas outlet structures according to claim 1, it is characterized in that, the size of two described round exits is identical, and the internal diameter size of two described flue tubes is identical.
3. less than 600,000 grades π type boiler air preheater exhanst gas outlet structures according to claim 1, it is characterized in that, the length of two described flue tubes is identical, and two described flue tubes are set up in parallel.
4. less than 600,000 grades π type boiler air preheater exhanst gas outlet structures according to claim 1, it is characterized in that, described passage comprises two square change circle structural members, described enter cigarette port be rectangular opening, described enter cigarette port on the long side direction of described rectangular opening, be divided into two square orifices, described square change circle structural member one end is described square orifice, and the described square change circle structural member other end is described circular port.
5. less than 600,000 grades π type boiler air preheater exhanst gas outlet structures according to claim 1, it is characterized in that, described flue tube comprises bend pipe and straight pipe, and described bend pipe one end is connected with described round exit, and the described bend pipe other end is connected with described straight pipe.
6. less than 600,000 grades π type boiler air preheater exhanst gas outlet structures according to claim 1, it is characterized in that, described connection housing, described flue tube are steel, and described connection housing welds with between described flue tube.
7. less than 600,000 grades coal unit, is characterized in that, comprising:
Air preheater, described air preheater has exhanst gas outlet;
Connect housing, described connection housing is connected with described air preheater, described connection housing is provided with passage, described passage includes cigarette port and smoke port, described enter cigarette port and described exhanst gas outlet adapt, and described in enter cigarette port and be connected with described exhanst gas outlet, described smoke port is two round exits;
Flue tube, the cross section at any place of described flue tube is circle, and described flue tube is two, two flue tubes and two round exit one_to_one corresponding, end shape and the described round exit shape of described flue tube adapt, and the end of described flue tube is connected with described round exit; And
Deduster, described deduster has two smoke inlets, two described flue tubes and two described smoke inlet one_to_one corresponding, end shape and the described smoke inlet shape of described flue tube adapt, and the end of described flue tube is connected with described smoke inlet.
8. less than 600,000 grades coal unit according to claim 7, is characterized in that, described air preheater and described deduster are one or two.
9. less than 600,000 grades coal unit according to claim 7, it is characterized in that, described flue tube comprises the first bend pipe, the second bend pipe, the 3rd bend pipe, the first straight pipe, the second straight pipe and the 3rd straight pipe, described first bend pipe, the first straight pipe, the second bend pipe, the second straight pipe, the 3rd bend pipe and the 3rd straight pipe are connected successively, the described first bend pipe other end is connected with described round exit, and the described 3rd straight pipe other end is connected with described smoke inlet.
10. less than 600,000 grades coal unit according to claim 9, it is characterized in that, described smoke inlet is provided with in trumpet-shaped tube connector, and described tube connector one end is connected with described smoke inlet, and the described tube connector other end is connected with described 3rd straight pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521073563.XU CN205208590U (en) | 2015-12-17 | 2015-12-17 | 60 pi type boiler air preheater flue gas exit structure and coal -fired unit below ten thousand grades |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521073563.XU CN205208590U (en) | 2015-12-17 | 2015-12-17 | 60 pi type boiler air preheater flue gas exit structure and coal -fired unit below ten thousand grades |
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| CN205208590U true CN205208590U (en) | 2016-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485702A (en) * | 2015-12-17 | 2016-04-13 | 中国能源建设集团广东省电力设计研究院有限公司 | Below-600,000kW class pi-shaped boiler air pre-heater smoke outlet structure and coal firing unit |
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2015
- 2015-12-17 CN CN201521073563.XU patent/CN205208590U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485702A (en) * | 2015-12-17 | 2016-04-13 | 中国能源建设集团广东省电力设计研究院有限公司 | Below-600,000kW class pi-shaped boiler air pre-heater smoke outlet structure and coal firing unit |
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