CN213395373U - Boiler combination soot blowing structure - Google Patents
Boiler combination soot blowing structure Download PDFInfo
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- CN213395373U CN213395373U CN202022175091.6U CN202022175091U CN213395373U CN 213395373 U CN213395373 U CN 213395373U CN 202022175091 U CN202022175091 U CN 202022175091U CN 213395373 U CN213395373 U CN 213395373U
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Abstract
The utility model discloses a boiler combination blows grey structure, its technical scheme main points are: the steam boiler comprises a boiler body, the preceding lateral wall and the back lateral wall of furnace body all are equipped with steam soot blower, the middle part of furnace body is equipped with the mid-board, the mid-board will the furnace body divide into half district on the left side and half district on the right side, half district on the left side and half district on the right side of furnace body all are equipped with the heat exchange tube group, the left side wall of furnace body and the right lateral wall of mid-board all are equipped with just to the sound wave soot blower that half district on the left side of furnace body set up, the right side wall of furnace body and the left side wall of mid-board all are equipped with just to the sound wave soot blower. The invention realizes effective soot blowing of the heat exchange tube group near the middle part of the furnace body. In addition, because the ash blowing direction included angle between the steam ash blower and the sound wave ash blower is large, the ash blowing in different directions of the heat exchange tube group is realized, dead angles on the heat exchange tube group can be blown, and the ash blowing effect is better.
Description
Technical Field
The utility model relates to a technical field of the soot blowing structure of boiler specifically is a soot blowing structure is made up to boiler.
Background
The interior of the boiler can be generally divided into a hearth for combustion and a furnace body channel for heat exchange. A large number of heat exchange tube sets are distributed in the furnace body channel, water flows through the heat exchange tube sets, and when heating air flow in the hearth passes through the furnace body channel, the water in the heat exchange tube sets can be quickly heated. However, when coal in the hearth burns, a large amount of soot is generated, and when the soot flows through the heat exchange tube set, the soot is easily adhered to the tube wall of the heat exchange tube set and deposited ash is formed, which not only affects heat exchange, but also can cause local over-temperature of the heat exchange tube set in severe cases to form potential safety hazard.
The steam soot blower is a device for blowing soot by blowing high-temperature steam, and is widely applied to a boiler room due to the obvious soot blowing effect. However, because the steam blown out by the steam soot blower is a humid medium, if the steam is frequently used, the pipe wall of the heat exchange pipe set is damaged, and therefore soot blowing needs to be performed in a timing and quantitative mode. In practice, because the soot blowing interval of the steam soot blower is longer, the deposited soot is easy to coke and harden, and the subsequent soot blowing is more difficult.
Disclosure of Invention
The utility model aims at solving the boiler among the prior art if frequently use steam soot blower to blow the pipe wall that results in heat exchange tube group easily by the blowing loss, but if do not use often will lead to deposition coking sclerosis to cause follow-up this contradiction problem of blowing the ash more difficult.
The technical solution of the utility model is that: the utility model provides a boiler combination blows grey structure, includes the furnace body, the preceding lateral wall and the back lateral wall of furnace body all are equipped with the steam soot blower, the middle part of furnace body is equipped with the mid-board, the mid-board will the furnace body divide into half left district and half right district, half left district and half right district of furnace body all are equipped with the heat exchange tube group, the left side wall of furnace body and the right lateral wall of mid-board all are equipped with the sound wave soot blower that just sets up half left district of furnace body, the right side wall of furnace body and the left side wall of mid-board all are equipped with the sound wave soot blower that just sets up half right district of furnace body.
The utility model discloses relative prior art's beneficial effect does: the middle partition wall is arranged in the furnace body, so that the furnace body is divided into a left half area and a right half area, and meanwhile, the front side wall and the rear side wall of the furnace body are provided with the steam soot blowers, so that soot blowing in the front and rear directions with longer distance to the furnace body is realized; the sound wave soot blowers are arranged on the left side wall, the right side wall and the middle partition wall of the furnace body, and because the sound wave soot blowers have small influence on the pipe wall and are simple to install, the soot blowing in the left and right directions with shorter distance to the furnace body can be effectively realized. The utility model discloses a steam soot blower and sound wave soot blower's combined use has realized effectively blowing the soot of the heat exchange tube group near the middle part position of furnace body. Meanwhile, because the included angle of the soot blowing direction between the steam soot blower and the sound wave soot blower is large, soot blowing in different directions of the heat exchange tube group is realized, dead corners on the heat exchange tube group can be blown, and the soot blowing effect is better.
Preferably, the heat exchange tube sets in the left half area and the right half area of the furnace body are multiple and are arranged in the vertical direction, an interlayer is left between the two heat exchange tube sets which are adjacent up and down, and the sound wave soot blower and the steam soot blower are arranged opposite to the interlayer. Because the accumulated dust is mostly present in the upper side pipe wall and the lower side pipe wall of the heat exchange pipe group, the arrangement of the interlayer provides a flowing space for the sound wave blown by the sound wave soot blower and the air flow blown by the steam soot blower on one hand, the problem of incomplete local soot blowing caused by too fast loss of the sound wave or the air flow is avoided, on the other hand, the sound wave or the air flow can positively blow the upper side pipe wall and the lower side pipe wall of the heat exchange pipe group, and the soot blowing effect is better.
Preferably, the heat exchange tube group of the left half area of the furnace body is opposite to the interlayer of the right half area; the heat exchange tube group of the right half area of the furnace body is opposite to the interlayer of the left half area, so that staggered arrangement is formed, the interference problem of the sound wave soot blowers on the left side wall and the right side wall of the middle partition wall is avoided, and the sound wave soot blowers are convenient to disassemble, assemble and maintain.
Preferably, a left air supply pipe is arranged on the radiating pipe group in the left half area of the furnace body, one end of the left air supply pipe is communicated to the left side of the furnace body, and the other end of the left air supply pipe is communicated to the sound wave soot blower on the right side wall of the intermediate wall; and a right air supply pipe is arranged on the radiating pipe group in the right half area of the furnace body, one end of the right air supply pipe is communicated to the right side of the furnace body, and the other end of the right air supply pipe is communicated to the sound wave soot blower on the left side wall of the intermediate wall. The left air supply pipe and the right air supply pipe are arranged on the heat exchange pipe set, so that the disturbance influence of the left air supply pipe and the right air supply pipe on the heating air flow in the furnace body is weakened.
Preferably, the furnace also comprises a horizontal flue, one end of the horizontal flue is communicated to the top of the furnace, the other end of the horizontal flue is communicated to the top of the furnace body, and a plurality of superheater groups are arranged in the horizontal flue. The heating air current that furnace produced is through the preliminary heat transfer of superheater group of horizontal flue after, reentrant furnace body and carry out the heat transfer with heat exchange tube group to realize multi-level heat transfer on the one hand, also avoid the too high problem of sound wave soot blower temperature on the mid-board on the one hand.
Preferably, the device also comprises an auxiliary sound wave soot blower, a horizontal ceiling superheater is arranged at the upper part of the horizontal flue, a gap is reserved between the ceiling superheater and the top wall of the horizontal flue to form a furnace top small chamber, the superheater group is vertically arranged and is arranged in a staggered manner with the ceiling superheater, a header tank used for communicating the superheater group is arranged in the furnace top small chamber, and the auxiliary sound wave soot blower is connected with the ceiling superheater and is arranged downwards.
Preferably, the soot blowing directions of the sound wave soot blower are all arranged along the horizontal direction by 15-20 degrees, so that the sound wave direction deviates to one side which is the same as the flow direction of the heating air flow, the sound wave penetrating power is stronger, the sound wave vibration generated after the sound wave acts on the heat exchange tube group is stronger, and the generated blowing effect is better.
Preferably, the bottom of the furnace body is provided with a sealing plate, and the sealing plate is used for controlling the flow area of the bottoms of the left half area and the right half area of the furnace body.
Preferably, the steam soot blowers are telescopic steam soot blowers, so that a larger effective sweeping stroke can be obtained in the front-back direction of the furnace body.
Drawings
Fig. 1 is an overall schematic view of a combined soot blowing structure of a boiler according to the present invention;
FIG. 2 is a schematic view taken along line A-A in FIG. 1;
FIG. 3 is a schematic view taken along line B-B in FIG. 1;
fig. 4 is an installation schematic diagram of the sound wave soot blower of the combined soot blowing structure of the boiler of the present invention.
In the drawings: 1-furnace body; 1.1-hearth; 1.2-horizontal flue; 2-an intermediate wall; 3-heat exchange tube group; 3.1-sandwich; 4-steam soot blower; 5-a sonic soot blower; 5.1-left gas supply pipe; 5.2-right gas supply pipe; 6-a superheater group; 6.1-header; 7-ceiling superheater; 8-auxiliary acoustic soot blower; 9-closing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1-3, the utility model discloses a boiler combination blows grey structure, including furnace body 1, furnace body 1's preceding lateral wall all is equipped with steam soot blower 4 with the back lateral wall, furnace body 1's middle part is equipped with mid-board 2, mid-board 2 is divided into half district on a left side and half district on the right side with furnace body 1, furnace body 1's half district on a left side and half district on the right side all are equipped with heat exchange tube group 3, furnace body 1's left side wall and mid-board 2's right side wall all are equipped with the sound wave soot blower 5 that just sets up half district on a left side of furnace body 1, furnace body 1's right side wall and mid-board 2's left side wall all are equipped with the sound wave soot blower.
When the furnace is used, the heating airflow generated by the hearth 1.1 passes through the furnace body 1 from top to bottom and heats the heat exchange tube group 3 in the furnace body 1. At this time, the furnace body 1 is divided into a left half area and a right half area by the intermediate wall 2 arranged inside the furnace body 1. The steam soot blowers 4 on the front side wall and the rear side wall of the furnace body 1 realize soot blowing in the front-back direction with longer distance to the furnace body 1; the acoustic wave soot blowers 5 on the left side wall and the right side wall of the furnace body 1 and the intermediate wall 2 realize soot blowing in the left and right directions with short distance.
The utility model discloses steam soot blower 4 and sound wave soot blower 5 have been adopted simultaneously to mounting structure to the two has carried out optimal design, has realized effectively blowing the soot of the heat exchange tube group 3 near the middle part position of furnace body 1. In addition, because the included angle of the soot blowing direction between the steam soot blower 4 and the sound wave soot blower 5 is large, soot blowing in different directions of the heat exchange tube group 3 is realized, dead angles on the heat exchange tube group 3 can be blown, and the soot blowing effect is better.
Referring to fig. 4, the heat exchange tube set 3 is composed of a plurality of U-shaped heat exchange tubes arranged in a stacked manner, in this embodiment, the heat exchange tube sets 3 in the left half area and the right half area of the furnace body 1 are both multiple and arranged in the vertical direction. An interlayer 3.1 is left between two heat exchange tube sets 3 which are adjacent up and down. The steam soot blowers 4 on the side wall of the furnace body 1 are horizontally arranged, and the soot blowing openings of the steam soot blowers 4 are arranged opposite to the interlayer 3.1; the soot blowing directions of the sound wave soot blowers 5 on the side wall of the furnace body 1 and the intermediate wall 2 are all arranged along the horizontal direction by 15-20 degrees, so that the sound wave direction is deviated to one side which is the same as the flow direction of the heating air flow, the sound wave penetrating power is stronger, the sound wave vibration generated after the sound wave acts on the heat exchange tube group 3 is also stronger, and the generated purging effect is better. Meanwhile, as the accumulated dust is mostly present on the upper side pipe wall and the lower side pipe wall of the heat exchange pipe group 3, the interlayer 3.1 provides a flowing space for the sound wave blown by the sound wave soot blower 5 and the air flow blown by the steam soot blower 4 on one hand, so that the problem of incomplete local soot blowing caused by too fast loss of the sound wave or the air flow is avoided, on the other hand, the sound wave or the air flow can positively blow the upper side pipe wall and the lower side pipe wall of the heat exchange pipe group 3, and the soot blowing effect is better.
In consideration of the interference problem of the sound wave soot blowers 5 on the left side wall and the right side wall of the intermediate wall 2, the embodiment further optimizes the arrangement mode inside the furnace body 1, namely the heat exchange tube group 3 in the left half area of the furnace body 1 is opposite to the interlayer 3.1 in the right half area; the heat exchange tube group 3 of the right half area of the furnace body 1 is opposite to the interlayer 3.1 of the left half area, thereby forming staggered arrangement, and being convenient for the disassembly, assembly and maintenance of the acoustic wave soot blower 5. A left air supply pipe 5.1 is arranged on the radiating pipe group in the left half area of the furnace body 1, one end of the left air supply pipe 5.1 is communicated to the left side of the furnace body 1, and the other end is communicated to a sound wave soot blower 5 on the right side wall of the intermediate wall 2; and a right air supply pipe 5.2 is arranged on the radiating pipe group in the right half area of the furnace body 1, one end of the right air supply pipe 5.2 is communicated to the right side of the furnace body 1, and the other end is communicated to the sound wave soot blower 5 on the left side wall of the intermediate wall 2. By providing the left air supply pipe 5.1 and the right air supply pipe 5.2 to the heat exchange tube group 3, the disturbing influence of the left air supply pipe 5.1 and the right air supply pipe 5.2 on the heating air flow in the furnace body 1 is weakened.
The steam sootblowers 4 are preferably telescopic steam sootblowers 4, so that a larger effective purge stroke can be obtained in the front-rear direction of the furnace body 1.
The hearth 1.1 and the furnace body 1 can be directly communicated, and at the moment, heating airflow in the hearth 1.1 directly enters the furnace body 1 to exchange heat with the heat exchange tube group 3; furnace 1.1 and furnace body 1 also can be in indirect intercommunication, be provided with horizontal flue 1.2 between the top of furnace 1.1 and the top of furnace body 1 this moment, and can further set up a plurality of superheater groups 6 in the horizontal flue 1.2, thereby make the heating air current that furnace 1.1 produced through the preliminary heat transfer of superheater group 6 of horizontal flue 1.2 after, reentrant furnace body 1 in and carry out the heat transfer with heat transfer pipe group 3, realize on the one hand that it is multi-level to exchange heat, also avoid the too high problem of sound wave soot blower temperature on the mid-board 2 on the one hand.
As a further optimization of the horizontal flue 1.2, a horizontal ceiling superheater 7 is fixed at the upper part of the horizontal flue 1.2, the ceiling superheater 7 is formed by folding and arranging a plurality of superheater tubes, and a gap is reserved between adjacent superheater tubes. A gap is left between the ceiling superheater 7 and the top wall of the horizontal flue 1.2 to form a furnace top small chamber which is used as a buffer area and reduces heat loss caused by contact of the heating gas and the top wall of the horizontal flue 1.2. The superheater group 6 is vertically arranged and supported and fixed through a ceiling superheater 7, the lower part of the superheater group 6 extends to the middle part or the lower part of the horizontal flue 1.2, and the upper part of the superheater group 6 penetrates through the ceiling superheater 7 and enters a furnace top chamber, so that the superheater group 6 and the ceiling superheater 7 are arranged in a staggered mode. By optimizing the arrangement of the ceiling superheater 7 and the superheater group 6, the heating gas in the horizontal flue 1.2 can be better subjected to heat exchange.
The small chamber at the top of the furnace can be also internally provided with a header 6.1, the header 6.1 can communicate with the superheater tubes in the superheater group 6, the steam circulation in the superheater group 6 is effectively improved, and the heat exchange efficiency of the superheater group 6 is further improved.
As shown in fig. 1, the groups of superheaters 6 are three in number and are arranged along the flow direction of the heating air flow. The auxiliary acoustic sootblowers 8 are connected to the ceiling superheaters 7 and are located in the gaps between adjacent superheater groups 6. The soot blowing opening of the auxiliary sound wave soot blower 8 is arranged downwards, so that soot can be blown to the superheater group 6 on the one hand, and soot can be blown to the bottom wall of the horizontal flue 1.2 on the other hand, and the problem of excessive soot deposition is prevented.
The left side wall and the right side wall of the bottom of the furnace body 1 are provided with telescopic sealing plates 9, the sliding direction of the sealing plates 9 is horizontal, and the flow area of the bottoms of the left half area and the right half area of the furnace body 1 can be controlled by controlling the extending distance of the sealing plates 9, so that the flow of the heating air flow of the left half area and the right half area of the furnace body 1 can be conveniently adjusted.
The utility model also provides a boiler combination soot blowing structure application method:
firstly, taking a steam soot blower 4 and a sound wave soot blower 5 with the same height on a furnace body 1 and a middle partition wall 2 as a pair of soot blowing groups, and numbering each pair of soot blowing groups as 1, 2, 3 and 4 … … from top to bottom in sequence;
subsequently, the ash content of the coal species was confirmed:
when the combustion of the comprehensive coal ash Aar is less than 1.0Aar, the auxiliary sound wave soot blower 7 blows soot once every two days, meanwhile, the sound wave soot blower 5 in each pair of soot blowing groups on the furnace body 1 independently blows soot, and the soot blowing groups circularly and completely blow soot once every two days, wherein the soot blowing groups 1, 3, 5 and 7 … … blow soot in the first day, and the soot blowing groups 2, 4, 6 and 8 … … blow soot in the second day;
when the comprehensive coal ash for combustion is 1.0Aar designed to be less than Aar and the comprehensive coal ash for combustion is less than 1.2Aar designed, the auxiliary sound wave soot blower 7 blows soot once every two days, meanwhile, the steam soot blower 4 in each pair of soot blowing groups on the furnace body 1 blows soot independently, and the soot blowing groups blow the soot once every five days;
when the comprehensive coal ash for combustion Aar is designed to be more than 1.2Aar, the auxiliary sound wave soot blower 7 blows soot once a day, and simultaneously the steam soot blower 4 and the sound wave soot blower 5 in each pair of soot blowing groups on the furnace body 1 perform soot blowing, and the soot blowing groups blow the soot once every two days in a circulating manner.
Wherein, Aar burning refers to the ash content of the coal species actually burned; aar refers to the ash content of coal under the condition of the preset standard of the system.
According to the using method of the boiler combined soot blowing structure, the soot blowing sequence of the soot blowing group and the auxiliary sound wave soot blower 7 is optimized according to different coal components, the soot blowing times are reduced as far as possible on the premise of ensuring the soot blowing effect of the furnace body and the horizontal flue, and a better effect is achieved in practice.
The present invention has been described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. The utility model provides a boiler combination blows grey structure, includes furnace body (1), its characterized in that, the preceding lateral wall and the back lateral wall of furnace body (1) all are equipped with steam soot blower (4), the middle part of furnace body (1) is equipped with mid-board (2), mid-board (2) will furnace body (1) divide into left half district and right half district, the left half district and the right half district of furnace body (1) all are equipped with heat exchange tube group (3), the left side wall of furnace body (1) and the right side wall of mid-board (2) all are equipped with just to sound wave soot blower (5) that furnace body (1) left half district set up, the right side wall of furnace body (1) and the left side wall of mid-board (2) all are equipped with just to sound wave soot blower (5) that furnace body (1) right half district set up.
2. The boiler combination soot blowing structure of claim 1, characterized in that the heat exchange tube sets (3) of the left half area and the right half area of the furnace body (1) are all multiple and arranged along the vertical direction, an interlayer (3.1) is left between two adjacent heat exchange tube sets (3) up and down, and the acoustic soot blower (5) and the steam soot blower (4) are both arranged opposite to the interlayer (3.1).
3. A boiler combined soot blowing structure according to claim 2, characterized in that the heat exchange tube group (3) of the left half area and the interlayer (3.1) of the right half area of the furnace body (1) are opposite; the heat exchange tube group (3) in the right half area of the furnace body (1) is opposite to the interlayer (3.1) in the left half area, so that staggered arrangement is formed.
4. A combined soot blowing structure of a boiler according to claim 3, characterized in that a left air supply pipe (5.1) is provided on the group of the radiating pipes in the left half of the furnace body (1), one end of the left air supply pipe (5.1) is connected to the left side of the furnace body (1), and the other end is connected to the sonic soot blower (5) on the right side wall of the intermediate wall (2); and a right air supply pipe (5.2) is arranged on the radiating pipe group in the right half area of the furnace body (1), one end of the right air supply pipe (5.2) is communicated to the right side of the furnace body (1), and the other end of the right air supply pipe is communicated to the sound wave soot blower (5) on the left side wall of the intermediate wall (2).
5. The boiler combination soot blowing structure of any one of claims 1 to 4, characterized in that the soot blowing directions of the acoustic soot blowers (5) are all arranged along a horizontal downward direction by 15-20 degrees.
6. The combined soot blowing structure of the boiler as claimed in claim 5, further comprising a horizontal flue (1.2), one end of the horizontal flue (1.2) is connected to the top of the furnace (1.1), the other end is connected to the top of the furnace body (1), and a plurality of superheater groups (6) are arranged in the horizontal flue (1.2).
7. The boiler combination soot-blowing structure of claim 6, characterized by further comprising an auxiliary acoustic soot blower (8), wherein a horizontal ceiling superheater (7) is arranged at the upper part of the horizontal flue (1.2), a gap is reserved between the ceiling superheater (7) and the top wall of the horizontal flue (1.2) to form a furnace top cell, the superheater group (6) is vertically arranged and staggered with the ceiling superheater (7), a header (6.1) for communicating the superheater group (6) is arranged in the furnace top cell, and the auxiliary acoustic soot blower (8) is connected to the ceiling superheater (7) and is arranged downwards.
8. A boiler combined soot blowing structure according to claim 5, characterized in that the bottom of the furnace body (1) is provided with a sealing plate (9), and the sealing plate (9) is used for controlling the flow area of the bottom of the left half and the right half of the furnace body (1).
9. A boiler combined soot blowing structure according to claim 5, characterized in that the steam soot blower (4) is a telescopic steam soot blower.
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| CN202022175091.6U CN213395373U (en) | 2020-09-29 | 2020-09-29 | Boiler combination soot blowing structure |
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| CN202022175091.6U CN213395373U (en) | 2020-09-29 | 2020-09-29 | Boiler combination soot blowing structure |
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| CN213395373U true CN213395373U (en) | 2021-06-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128786A (en) * | 2020-09-29 | 2020-12-25 | 浙江浙能中煤舟山煤电有限责任公司 | Boiler combination soot blowing structure |
| CN114453353A (en) * | 2022-02-17 | 2022-05-10 | 北京海泰科环科技有限公司 | Swirl generator, cleaning device and cleaning system |
-
2020
- 2020-09-29 CN CN202022175091.6U patent/CN213395373U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128786A (en) * | 2020-09-29 | 2020-12-25 | 浙江浙能中煤舟山煤电有限责任公司 | Boiler combination soot blowing structure |
| CN114453353A (en) * | 2022-02-17 | 2022-05-10 | 北京海泰科环科技有限公司 | Swirl generator, cleaning device and cleaning system |
| CN114453353B (en) * | 2022-02-17 | 2022-08-02 | 北京海泰科环科技有限公司 | Swirl generator, cleaning device and cleaning system |
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