CN115888465A - Rotary driving system suitable for long-term operation of high-temperature and high-dust flue gas - Google Patents
Rotary driving system suitable for long-term operation of high-temperature and high-dust flue gas Download PDFInfo
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- CN115888465A CN115888465A CN202211050505.XA CN202211050505A CN115888465A CN 115888465 A CN115888465 A CN 115888465A CN 202211050505 A CN202211050505 A CN 202211050505A CN 115888465 A CN115888465 A CN 115888465A
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- rotating shaft
- pivot
- long
- temperature
- safety cover
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- 239000000428 dust Substances 0.000 title claims abstract description 21
- 230000007774 longterm Effects 0.000 title claims abstract description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000003546 flue gas Substances 0.000 title claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 26
- 239000000779 smoke Substances 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000003517 fume Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000007246 mechanism Effects 0.000 abstract description 5
- 230000000740 bleeding effect Effects 0.000 abstract description 2
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The invention discloses a rotary driving system suitable for long-term operation of high-temperature and high-dust flue gas, which comprises a motor, a first rotating shaft, a second rotating shaft, a third rotating shaft, a protective cover, a rotating device and a flue, wherein the first rotating shaft is connected with the first rotating shaft; the export of safety cover is located the flue, the entry of safety cover is located outside the flue, the output shaft of motor is connected with the one end of first pivot, the other end of first pivot is connected with the one end of second pivot, the other end of second pivot is connected with the one end of third pivot after the entry of safety cover inserts in the safety cover, the other end of third pivot is connected with rotary device after stretching out the safety cover through the export of safety cover, be provided with the impeller of bleeding in the third pivot, this system alleviates transmission's heat altered shape, near the stifled ash and wearing and tearing appear in elimination pivot, guarantee rotary mechanism long-term steady operation.
Description
Technical Field
The invention belongs to the field of flue gas pollutant treatment of thermal power plants, and relates to a rotary driving system suitable for long-term operation of high-temperature and high-dust flue gas.
Background
At present, the SCR (selective catalytic reduction) denitration process is commonly adopted in thermal power plants in China to remove nitrogen oxides generated after fuel combustion, and because the temperature of the SCR catalyst with the best activity is about 350 ℃, a denitration device is generally arranged between an economizer with the smoke temperature of about 300-400 ℃ and an air preheater, the requirement of the SCR denitration process can be met, and meanwhile, the smoke concentration at the position is very high and can reach dozens of grams per cubic meter. In general, the denitration inlet flue gas needs to be subjected to measures such as local mixing, flow guiding and the like so as to meet the requirements of certain concentration and speed uniformity. The method adopted at present is to install a static mixer in the flue 11 additionally to force the flue gas to generate vortex, disperse and mix so as to achieve a certain mixing effect, and the method is a passive mixing method depending on the kinetic energy of the fluid. If can develop a developments rotatory initiative mixing arrangement of forcing the mixture of developments, its mixed effect will improve greatly, but its core problem is how to ensure rotary mechanism reliability and stability of operation in high temperature, high smoke and dust environment, how to avoid its rotary part difficult stifled ash, wearing and tearing and high temperature deformation etc. to reach and can long-term steady operation. Therefore, no corresponding device has been developed in the SCR denitration process so far, and no application case exists.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a rotary driving system suitable for long-term operation of high-temperature and high-dust smoke, which reduces the thermal deformation of a transmission system, eliminates the dust blockage and abrasion near a rotating shaft and ensures long-term stable operation of a rotating mechanism.
In order to achieve the purpose, the rotary driving system suitable for long-term operation of high-temperature and high-dust flue gas comprises a motor, a first rotating shaft, a second rotating shaft, a third rotating shaft, a protective cover, a rotating device and a flue;
the export of safety cover is located the flue, the entry of safety cover is located outside the flue, the output shaft of motor is connected with the one end of first pivot, the other end of first pivot is connected with the one end of second pivot, the other end of second pivot is connected with the one end of third pivot after the entry of safety cover inserts in the safety cover, the other end of third pivot is connected with rotary device after the export of safety cover stretches out the safety cover, be provided with the impeller of bleeding in the third pivot.
The protective cover is connected with the second rotating shaft and the third rotating shaft through a support.
The output shaft of the motor is connected with the first rotating shaft through a coupler.
The output shaft of the motor and the first rotating shaft are positioned on the bearing seat.
And bearings are arranged between the bracket and the first rotating shaft and between the bracket and the second rotating shaft.
The entrance of the protective cover is provided with a filter screen.
The protection cover is of an L-shaped structure.
The first rotating shaft and the second rotating shaft are connected with each other through a gear set, and the second rotating shaft and the third rotating shaft are connected with each other through a gear set.
The invention has the following beneficial effects:
when the rotary driving system suitable for long-term operation of high-temperature and high-dust smoke is specifically operated, the motor drives the air exhaust impeller to rotate, so that external air passes through the protective cover, the transmission system is cooled by the external air, meanwhile, smoke in a flue is prevented from entering the protective cover, dust blockage and abrasion near a rotating shaft are eliminated, the long-term stable operation of the rotary mechanism is ensured, the problems of self cooling and self smoke shielding of the transmission system are solved, and a core technical support is provided for further developing a dynamic rotary stirring and mixing device in a high-temperature and high-dust environment.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a motor, 2 is a bearing seat, 3 is a coupler, 4 is a gear set, 5 is a bracket, 6 is a bearing, 71 is a first rotating shaft, 72 is a second rotating shaft, 73 is a third rotating shaft, 8 is a protective cover, 9 is an air exhaust impeller, 10 is a rotating device, 11 is a flue and 12 is a filter screen.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of the various regions, layers and their relative sizes, positional relationships are shown in the drawings as examples only, and in practice deviations due to manufacturing tolerances or technical limitations are possible, and a person skilled in the art may additionally design regions/layers with different shapes, sizes, relative positions, according to the actual needs.
Referring to fig. 1, the rotary driving system adapted to long-term operation of high-temperature and high-dust flue gas according to the present invention includes a motor 1, a bearing seat 2, a coupling 3, a gear set 4, a bracket 5, a bearing 6, a first rotating shaft 71, a second rotating shaft 72, a third rotating shaft 73, a protective cover 8, an air exhaust impeller 9, a rotating device 10, a flue 11, and a filter screen 12;
an outlet of the protective cover 8 is positioned in the flue 11, an inlet of the protective cover 8 is positioned outside the flue 11, an output shaft of the motor 1 is connected with one end of a first rotating shaft 71, the other end of the first rotating shaft 71 is connected with one end of a second rotating shaft 72, the other end of the second rotating shaft 72 is inserted into the protective cover 8 through the inlet of the protective cover 8 and then connected with one end of a third rotating shaft 73, the other end of the third rotating shaft 73 extends out of the protective cover 8 through the outlet of the protective cover 8 and then is connected with the rotating device 10, and a filter screen 12 is arranged at the inlet of the protective cover 8;
the output shaft of the motor 1 is connected with the first rotating shaft 71 through the coupler 3, the output shaft of the motor 1 and the first rotating shaft 71 are positioned on the bearing seat 2, and the first rotating shaft 71 and the second rotating shaft 72 are connected with each other and the second rotating shaft 72 and the third rotating shaft 73 are connected with each other through the gear set 4.
The protection cover 8 is connected with the second rotating shaft 72 and the third rotating shaft 73 through the bracket 5, wherein the bearings 6 are arranged between the bracket 5 and the first rotating shaft 71 and the second rotating shaft 72, the air exhaust impeller 9 is arranged on the third rotating shaft 73, and the protection cover 8 is of an L-shaped structure.
The specific working process of the invention is as follows:
starting the motor 1, the motor 1 drives the air exhaust impeller 9 and the rotating device 10 to work through the first rotating shaft 71, the second rotating shaft 72 and the third rotating shaft 73, the air exhaust impeller 9 rotates, external air enters the protective cover 8 after being filtered by the filter screen 12, then the external air passes through the protective cover 8 and is discharged from the outlet of the protective cover 8, and the external air is blown to the rotating device 10, in the process, the first rotating shaft 71, the second rotating shaft 72, the third rotating shaft 73, the air exhaust impeller 9 and the rotating device 10 are blown and cooled through the external air, thermal deformation of a transmission system is reduced, meanwhile, smoke is prevented from entering the protective cover 8, dust blockage and abrasion near the rotating shaft are avoided, and long-term stable operation of the rotating mechanism is guaranteed.
It should be noted that the protective cover 8 of the present invention plays three roles: the fixed end of the inner bracket 5 is used for keeping the position of an inner shafting; secondly, the internal transmission component can be protected from being directly contacted with the smoke, and the smoke abrasion is prevented; thirdly, a channel which can be entered by air is provided to enter cooling air, and the filter screen 12 plays a role of filtering air and preventing sundries from being sucked into the protective cover 8.
The air extraction impeller 9 in the invention has the following functions: on the one hand, the components such as the shaft, the bearing 6 and the gear set are cooled, on the other hand, cooling air is sprayed into smoke from the outlet of the protective cover 8, smoke in the smoke can be blown away from the outlet of the protective cover 8, the smoke is prevented from entering a transmission system, abrasion is generated on the internal components, and the effect of isolating the smoke is achieved.
Claims (8)
1. A rotary driving system suitable for long-term operation of high-temperature and high-dust flue gas is characterized by comprising a motor (1), a first rotating shaft (71), a second rotating shaft (72), a third rotating shaft (73), a protective cover (8), a rotating device (10) and a flue (11);
the export of safety cover (8) is located flue (11), the entry of safety cover (8) is located outside flue (11), the output shaft of motor (1) is connected with the one end of first pivot (71), the other end of first pivot (71) is connected with the one end of second pivot (72), the other end of second pivot (72) is inserted in safety cover (8) back through the entry of safety cover (8) and is connected with the one end of third pivot (73), the other end of third pivot (73) is connected with rotary device (10) after stretching out safety cover (8) through the export of safety cover (8), be provided with air exhaust impeller (9) on third pivot (73).
2. The rotary drive system for adapting to long-term operation of high-temperature and high-dust flue gas as recited in claim 1, wherein the protective cover (8) is connected with the second rotating shaft (72) and the third rotating shaft (73) through a bracket (5).
3. The rotary drive system adapting to long-term operation of high-temperature and high-dust smoke according to claim 1, characterized in that the output shaft of the motor (1) is connected with the first rotating shaft (71) through a coupling (3).
4. A rotary drive system adapted to long-term operation of high-temperature and high-dust flue gas according to claim 3, wherein the output shaft of the motor (1) and the first rotating shaft (71) are located on the bearing block (2).
5. The rotary drive system adapted to long-term operation of high-temperature and high-dust flue gas according to claim 2, wherein bearings (6) are arranged between the bracket (5) and the first rotating shaft (71) and between the bracket and the second rotating shaft (72).
6. A rotary drive system adapted to long-term operation of high-temperature and high-dust fumes according to claim 1, characterized in that a filter screen (12) is provided at the inlet of the protective cover (8).
7. The rotary drive system for adapting to long-term operation of high-temperature and high-dust flue gas as recited in claim 1, wherein the protection cover (8) is of an u-shape structure.
8. A rotary drive system adapted to long-term operation of high-temperature and high-dust flue gas according to claim 1, wherein the first rotating shaft (71) and the second rotating shaft (72) and the third rotating shaft (73) are connected through a gear set (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211050505.XA CN115888465B (en) | 2022-08-29 | 2022-08-29 | Rotary driving system suitable for long-term operation of high-temperature high-dust flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211050505.XA CN115888465B (en) | 2022-08-29 | 2022-08-29 | Rotary driving system suitable for long-term operation of high-temperature high-dust flue gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115888465A true CN115888465A (en) | 2023-04-04 |
| CN115888465B CN115888465B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211050505.XA Active CN115888465B (en) | 2022-08-29 | 2022-08-29 | Rotary driving system suitable for long-term operation of high-temperature high-dust flue gas |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4016894A1 (en) * | 1990-05-25 | 1991-12-05 | Hoelter Heinz | Redn. of carbon monoxide, nitrous oxide and sulphur di:oxide - involves expeller-eddy producer mixing flue gas with secondary and tertiary air |
| CN2107553U (en) * | 1991-11-11 | 1992-06-17 | 国家建筑材料工业局西安砖瓦研究所 | Energy-saving fan for brick and tile manufacturing |
| JP2002126581A (en) * | 2000-10-26 | 2002-05-08 | Mic Kk | Flue gas treatment cyclone apparatus |
| CN101158363A (en) * | 2007-11-16 | 2008-04-09 | 江苏大学 | Bearing wind refrigerating mechanism of high-temperature pump |
| CN204637994U (en) * | 2015-05-27 | 2015-09-16 | 山东应天节能环保科技有限公司 | A kind of desulphurization denitration automatic control system |
| CN207401340U (en) * | 2017-10-11 | 2018-05-25 | 郝松 | A kind of coal steam-electric plant smoke denitrification apparatus |
| CN208082257U (en) * | 2017-10-20 | 2018-11-13 | 北京北科欧远科技有限公司 | A kind of rectangular eddy current type static mixer |
| CN209576362U (en) * | 2019-07-16 | 2019-11-05 | 北京博奇电力科技有限公司 | A kind of Novel SCR denitrating system static state vortex mixer |
| CN111237800A (en) * | 2020-02-17 | 2020-06-05 | 南京兆能节能科技有限公司 | Smoke circulation downstream ash blocking prevention system and ash blocking prevention method thereof |
| CN111437722A (en) * | 2020-05-14 | 2020-07-24 | 国电南京电力试验研究有限公司 | Vortex static mixer system and ammonia spraying flue gas mixing and adjusting method |
| CN213528139U (en) * | 2020-07-17 | 2021-06-25 | 西安西矿环保科技有限公司 | Vortex structure and flue gas denitration mixing arrangement |
-
2022
- 2022-08-29 CN CN202211050505.XA patent/CN115888465B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4016894A1 (en) * | 1990-05-25 | 1991-12-05 | Hoelter Heinz | Redn. of carbon monoxide, nitrous oxide and sulphur di:oxide - involves expeller-eddy producer mixing flue gas with secondary and tertiary air |
| CN2107553U (en) * | 1991-11-11 | 1992-06-17 | 国家建筑材料工业局西安砖瓦研究所 | Energy-saving fan for brick and tile manufacturing |
| JP2002126581A (en) * | 2000-10-26 | 2002-05-08 | Mic Kk | Flue gas treatment cyclone apparatus |
| CN101158363A (en) * | 2007-11-16 | 2008-04-09 | 江苏大学 | Bearing wind refrigerating mechanism of high-temperature pump |
| CN204637994U (en) * | 2015-05-27 | 2015-09-16 | 山东应天节能环保科技有限公司 | A kind of desulphurization denitration automatic control system |
| CN207401340U (en) * | 2017-10-11 | 2018-05-25 | 郝松 | A kind of coal steam-electric plant smoke denitrification apparatus |
| CN208082257U (en) * | 2017-10-20 | 2018-11-13 | 北京北科欧远科技有限公司 | A kind of rectangular eddy current type static mixer |
| CN209576362U (en) * | 2019-07-16 | 2019-11-05 | 北京博奇电力科技有限公司 | A kind of Novel SCR denitrating system static state vortex mixer |
| CN111237800A (en) * | 2020-02-17 | 2020-06-05 | 南京兆能节能科技有限公司 | Smoke circulation downstream ash blocking prevention system and ash blocking prevention method thereof |
| CN111437722A (en) * | 2020-05-14 | 2020-07-24 | 国电南京电力试验研究有限公司 | Vortex static mixer system and ammonia spraying flue gas mixing and adjusting method |
| CN213528139U (en) * | 2020-07-17 | 2021-06-25 | 西安西矿环保科技有限公司 | Vortex structure and flue gas denitration mixing arrangement |
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|---|---|
| CN115888465B (en) | 2024-06-07 |
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