CN108905614A - A kind of guiding device and thermal power plant SCR method denitration flue gas even distribution system - Google Patents
A kind of guiding device and thermal power plant SCR method denitration flue gas even distribution system Download PDFInfo
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- CN108905614A CN108905614A CN201810935826.5A CN201810935826A CN108905614A CN 108905614 A CN108905614 A CN 108905614A CN 201810935826 A CN201810935826 A CN 201810935826A CN 108905614 A CN108905614 A CN 108905614A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000003546 flue gas Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 29
- 108700018263 Brassica oleracea SCR Proteins 0.000 title claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 44
- 239000003054 catalyst Substances 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 239000000779 smoke Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
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- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a kind of guiding devices and thermal power plant SCR method denitration flue gas even distribution system, the device includes the rotation axis being made of a solid shafting and multiple hollow shafts and deflector, solid shafting is center axis, and one end sets deflector, the other end is arranged hollow shaft, and multiple hollow shafts are set gradually from inside to outside；Solid shafting and hollow shaft one end are equipped with rotatable parts.The flow guide system includes longitudinal guide layer, lateral guide layer and monitor layer；Longitudinal guide layer includes the guiding device and the first supporting beam that multiple front and backs are set to flue same level；Lateral guide layer includes left and right settings in the multiple guiding devices and the second supporting beam of flue same level；Monitor layer includes multiple monitoring unit, and each monitoring unit includes that backing tube, support main pipe, switch piece and differential manometer, the present invention realize being evenly distributed with for denitration inlet flue gas flow field, extends catalyst service life, improves the stability of denitrating system operation.
Description
Technical field
The invention belongs to Flue Gas Denitration Technology of Coal-buming Power Plant fields, more particularly, to a kind of guiding device and thermal power plant's SCR method
Denitration flue gas even distribution system.
Background technique
Power plants generally complete minimum discharge transformation, the nitrous oxides concentration average value of denitrating system outlet at present
No more than 50mg/Nm3, the guarantee value of the escaping of ammonia is no more than 3ppm.In actual moving process, due to denitration inlet flue gas flow field
Uniformly distributed property difference leads to the abrasion, blocking and the reduction in service life of catalyst, and then causes denitrating system operation stability very poor.
SCR method denitrating system inlet flue gas velocity field deviation is excessive, the caused denitration after denitrating catalyst in flue gas
Efficiency is uneven, and specifically, a part of nitrous oxides concentration of denitrating system Outlet Section is excessively high, easily causes total row's mouth nitrogen oxides dense
The instantaneous exceeded phenomenon of degree；Denitrating system Outlet Section another part the escaping of ammonia is excessive, easily causes air preheater ammonium hydrogen sulfate knot
The phenomenon that dirt blocking, air preheater resistance is increased, thermoelectricity station service power consumption rate is directly affected；More serious person reduces the heat exchange of air preheater
Efficiency influences boiler efficiency therewith.
Existing flue gas flow field adjustment technology is mainly installed fixed deflector stream field in denitration flue and is leveled
Processing, this method are adjustment foundation with the result of numerical simulation, and actual conditions have certain deviation, are unable to ensure leveling flue gas
Flow field；Moreover, because the setting angle of fixed deflector is unable to adjust, even if causing to find flue gas stream in actual moving process
Field is unreasonable, can not but improve.
Therefore, how to realize using the actual conditions of flue gas flow field in flue as foundation, denitration inlet flue gas flow field is carried out
Uniformly distributed adjustment and monitoring have very important significance.
Summary of the invention
To solve the above-mentioned problems, the present invention proposes a kind of guiding device and thermal power plant SCR method denitration flue gas even distribution system,
Guiding device can realize the independent control of multiple deflectors；Thermal power plant SCR method denitration flue gas even distribution system, by denitrating system
The reasonable Arrangement that deflector is carried out between ammonia-spraying grid and denitrating catalyst is switched in denitrating catalyst inlet section using multiple spot
It monitors flue gas flow field on-line, using flue gas flow field practical in flue as foundation, carries out the combination of longitudinal guide layer and lateral guide layer
It adjusts, to realize being evenly distributed with for denitration inlet flue gas flow field, and then extends catalyst service life, improve denitrating system operation
Stability.
In order to achieve the above object, the present invention is resolved using following technical scheme.
A kind of guiding device, including rotation axis and multiple deflectors, the rotation axis is by a solid shafting and multiple hollow
Axis composition, the solid shafting are center axis, and described solid shafting one end is provided with deflector, and the other end is arranged with the first hollow shaft,
Deflector is arranged in first hollow shaft one end, and the other end is arranged with the second hollow shaft, and deflector is arranged in second hollow shaft one end, another
End cap is equipped with third hollow shaft, and multiple hollow shafts are set gradually from inside to outside, and each hollow shaft is correspondingly arranged a deflector；Institute
The one end for stating the separate deflector of solid shafting and each hollow shaft, which respectively corresponds, is provided with a rotatable parts.
A kind of guiding device according to the present invention, solid shafting are center axis, are used to support hollow shaft；The setting of solid shafting one end
There is deflector, the other end is arranged with the first hollow shaft, and deflector is arranged in first hollow shaft one end, and it is hollow that the other end is arranged with second
Deflector is arranged in axis, second hollow shaft one end, and the other end is arranged with third hollow shaft, and multiple hollow shafts are successively set from inside to outside
It sets, each hollow shaft is correspondingly arranged a deflector, and make solid shafting or each hollow shaft is respectively its shaft for corresponding to deflector,
The corresponding deflector of one axis, makes the rotation of each deflector that individually control can be achieved, and can use according to actual needs accordingly
One end of solid shafting and the separate deflector of each hollow shaft respectively corresponds a rotatable parts of setting to adjust each water conservancy diversion
The angle of plate be adjusted the flow velocity of fluid can by the guiding device.
In addition, a kind of guiding device provided by the invention can also have following additional technical feature：
Preferably, the rotatable parts include driven gear, and the driven gear is sheathed on the solid shafting or hollow shaft
On, the driven gear is connected with driving gear, and the driving gear is connected with motor；The output shaft of the motor and the master
Moving gear connection, the driving gear and the driven gear phase tooth and.
A kind of guiding device according to the present invention, rotatable parts include driven gear, driven gear be sheathed on solid shafting or
In hollow shaft, driven gear is connected with driving gear, and driving gear is connected with motor；The output shaft and driving gear of motor connect
Connect, driving gear and driven gear phase tooth and, make motor that solid shafting or hollow shaft can be driven to rotate, realize solid shafting and hollow shaft
The independent control of rotation.
Preferably, the output shaft of the motor includes multiple sleeves, and one end of each sleeve offers pin hole, the other end
It is arranged with another sleeve；Multiple sleeves are set gradually from inside to outside, and the sleeve of internal layer can be along outer layer in two neighboring sleeve
The inner wall of sleeve is mobile；Innermost layer sleeve is connect close to one end of pin hole with the driving gear, and outermost layer sleeve is far from pin
One end of nail hole is connect with the motor；Pin is equipped in the pin hole.
The output shaft of a kind of guiding device according to the present invention, motor includes multiple sleeves, and one end of each sleeve opens up
There is pin hole, the other end is arranged with another sleeve；Multiple sleeves are set gradually from inside to outside, internal layer in two neighboring sleeve
Sleeve can be moved along the inner wall of the sleeve of outer layer；Innermost layer sleeve is connect close to one end of pin hole with driving gear, outermost layer
Sleeve is connected to motor far from one end of pin hole, and pin is equipped in pin hole, and driving gear is allow to pass through adjacent sleeve
Movement converted between solid shafting and multiple hollow shafts, and then drive solid shafting or hollow shaft rotation.When adjustment solid shafting turns
When dynamic, the sleeve of internal layer is moved in the sleeve of outer layer, rigging pilotage is followed closely in the pin hole of outermost layer sleeve, fixes sleeve
Then outermost layer sleeve is connect by position with driving gear, the rotation of solid shafting can be realized in starting motor；When needs first are empty
When central axis, secondary outer layer sleeve only need to be moved to the outermost end of outermost layer sleeve, then fix two sleeves with pin, will led
Moving gear is connect with time outer layer sleeve, other and so on the rotation of solid shafting and multiple hollow shafts can be realized, in turn
Realize individually adjusting for each deflector angle.
Preferably, the rotatable parts include turning handle.
A kind of guiding device according to the present invention, rotatable parts include turning handle, for realizing the Manual angular of each deflector
Degree adjustment, adjusting the angle of deflector can also both be manually adjusted with adjust automatically, and in special circumstances such as electrical faults
When appearance, guiding device still can be operated normally.
Preferably, the motor is servo motor.
A kind of guiding device according to the present invention, motor are servo motor, realize solid shafting and each hollow shaft can
Accurately angle controls, while locking the angle and not changing.
Preferably, multiple deflectors are respectively rectangle.
A kind of guiding device according to the present invention, multiple deflectors are respectively rectangle, are the feelings of rectangle for fluid chamber
Condition makes multiple deflectors that can cover entire fluid chamber.
A kind of thermal power plant SCR method denitration flue gas even distribution system, including：The ammonia-spraying grid being set in turn in flue and catalysis
Longitudinal guide layer, lateral guide layer and monitor layer between the smoke inlet of oxidant layer.
The longitudinal direction guide layer includes multiple above-mentioned guiding devices and the first supporting beam；Multiple guiding devices are horizontally disposed
In in the same level in the flue, the both ends of first supporting beam are connect with the left and right sidewall of the flue respectively,
The front side wall or rear wall of the flue are stretched out in one end equipped with rotatable parts of the rotation axis of each guiding device, the other end with
The first supporting beam connection；The transverse direction guide layer includes multiple above-mentioned guiding devices and the second supporting beam；Multiple water conservancy diversion
Device is horizontally placed in the same level in the flue, and the both ends of second supporting beam are respectively and before the flue
Rear wall connection；Left side wall or the right side of the flue are stretched out in one end equipped with rotatable parts of the rotation axis of each guiding device
Wall, the other end are connect with second supporting beam.
The monitor layer includes multiple monitoring unit for being set to same level, and each monitoring unit includes multiple
Backing tube, support main pipe, switch piece and differential manometer, the support main pipe are horizontally placed in the flue, multiple backrests
Pipe is embedded in the support main pipe, and the side wall of the support main pipe is evenly arranged with multiple outlets, the air inlet of the backing tube
The outlet is stretched out at end, and the inlet end of multiple backing tubes is located at same level；One end of the support main pipe and institute
Flue sidewall connection is stated, the other end of the support main pipe stretches out the flue, and connect with the switch piece, the switch piece
It is provided with horizontal through hole, the detection probe of the differential manometer passes through the horizontal through hole and connect with the test lead of the backing tube,
The switch piece can be along the axial rotation of the support main pipe.
A kind of thermal power plant SCR method denitration flue gas even distribution system according to the present invention, the both ends of the first supporting beam respectively with cigarette
The left and right sidewall in road connects, and is used to support guiding device, one end equipped with rotatable parts of the rotation axis of each guiding device is stretched
The front side wall or rear wall of flue, the other end are connect with the first supporting beam out, make the rotation axis of guiding device in front-rear direction frame
Between flue sidewall and the first supporting beam, rotatable parts are set on the outside of flue, and it is vertical to carry out deflector convenient for operations staff
It is adjusted to angle；The both ends of second supporting beam are connect with the front-rear side walls of flue respectively, for fixing the second supporting beam；Each lead
The left side wall or right side wall of flue, the other end and the second supporting beam are stretched out in the one end equipped with rotatable parts for flowing the rotation axis of device
Connection is set up in the rotation axis of guiding device between flue sidewall and the second supporting beam in left and right directions, rotatable parts setting
On the outside of flue, the adjustment of deflector lateral angles is carried out convenient for operations staff.Multiple guiding devices are located at same level, guarantee
Each guiding device adjusting is the flue gas flow rate of the same cross section of flue.Pass through the water conservancy diversion of longitudinal guide layer and lateral guide layer
The angular adjustment of plate realizes that the vertical and horizontal of flue gas separate, and then realizes being evenly distributed with for same cross section of the flue gas in flue.
By the boiler smoke that ammonia-spraying grid is handled, longitudinal guide layer is initially entered, lateral guide layer is entered back into, by more
The vertical and horizontal of a guiding device are distributed, and make to be evenly distributed by the flue gas of longitudinal guide layer in vertical direction, by cigarette
The homogenizing of gas is handled, and is finally realized again by multiple backing tubes in monitor layer to the flue gas flow rate on a certain cross section of flue
Monitoring.Specifically, flue gas is entered by the inlet end of backing tube, is popped one's head in, is surveyed by the differential manometer that the test lead of backing tube connects
The flow velocity of flue gas at backing tube inlet end is obtained, then is shown by the display of differential manometer；It is axial along support main pipe by switch piece
Rotation, so that the detection probe of the differential manometer in the horizontal through hole of switch piece is directed at the test of different backing tubes in support main pipe
End, and then realize multiple spot monitoring, i.e., the flue gas flow rate monitoring of a certain cross section everywhere in realization flue.According to the practical stream of flue gas
Fast distribution situation adjusts the deflector angle in longitudinal guide layer and lateral guide layer, then obtains flue gas everywhere by display
Flow velocity repeats above-mentioned adjustment process, until display shows that flue gas flow rate is equal everywhere.Thereby realize denitration entrance
Flue gas flow field is evenly distributed with, and when operating condition changes, need to only readjust longitudinal guide layer and lateral guide layer inner deflector
Position can again be evenly distributed with flue gas flow field.
The present invention by between denitrating system ammonia-spraying grid and denitration catalyst oxidant layer carry out deflector reasonable Arrangement,
Denitrating catalyst inlet section using multiple spot switching on-line monitoring flue gas flow field, realize with flue gas flow field practical in flue for according to
According to the combination for carrying out longitudinal guide layer and lateral guide layer is adjusted, so that being evenly distributed with for denitration inlet flue gas flow field is realized, to keep away
The problems such as having exempted from catalyst local ageing, blocking, extends the service life of catalyst；It avoids denitrating system and always arranges mouth nitrogen oxygen
The excessive phenomenon of the instantaneous exceeded and local the escaping of ammonia of compound concentration, improves the stability of denitrating system operation；Pass through monitor
With the design of linkage motor, the on-line optimization of flue gas flow field is realized；Meanwhile the knot of air preheater itself is reduced to a certain extent
Dirty blockage problem extends the cycle of operation of air preheater, saves repair and maintenance cost.
In addition, a kind of thermal power plant SCR method denitration flue gas even distribution system provided by the invention can also have following additional skill
Art feature：
Preferably, each described export is connected with a branch pipe vertically respectively, described in the inlet end stretching of the backing tube
The free end of branch pipe, and the backing tube is fixed in the branch pipe.
A kind of thermal power plant SCR method denitration flue gas even distribution system according to the present invention, each outlet vertical connection one respectively
Branch pipe, branch pipe are used to provide support in the vertical direction to backing tube, and the inlet end of backing tube stretches out the free end of branch pipe, makes to lean on
The inlet end of penstock is evenly arranged on the same cross section of flue, and backing tube is fixed in branch pipe, makes the inlet end of each backing tube
Full pressure hole be aligned flow of flue gas direction.
Preferably, when multiple deflectors in guiding device are horizontally disposed with respectively, the region overlay of multiple deflectors formation
The cross section of flue.
A kind of thermal power plant SCR method denitration flue gas even distribution system according to the present invention, multiple deflectors point in guiding device
Not Shui Pingshezhi when, the cross section for the region overlay flue that multiple deflectors are formed allows deflector on flue cross section
Flue gas carry out vertical and horizontal adjusting, and then realize the adjusting of entire flue cross section flue gas flow rate everywhere.
Preferably, longitudinal guide layer, the lateral guide layer and the monitor layer are set in turn in institute from top to bottom
State the smoke inlet front end of catalyst layer.
A kind of thermal power plant SCR method denitration flue gas even distribution system according to the present invention, longitudinal guide layer, lateral guide layer and prison
The smoke inlet front end that layer is set in turn in catalyst layer from top to bottom is surveyed, convenient for monitoring the stream of catalyst layer inlet flue gas
Speed keeps the flue gas flow rate entered on the same cross section in catalyst layer equal, local ageing, blocking of catalyst etc. is avoided to ask
Topic, extends the service life of catalyst.
Detailed description of the invention
The present invention is described in further details in the following with reference to the drawings and specific embodiments.
Fig. 1 is a kind of a kind of structural schematic diagram of embodiment of guiding device of the invention.
Fig. 2 is a kind of structural schematic diagram of another embodiment of guiding device of the invention
Fig. 3 is the partial enlarged view of A in Fig. 1.
Fig. 4 is a kind of installation site structural schematic diagram of thermal power plant SCR method denitration flue gas even distribution system of the invention.
Fig. 5 is a kind of embodiment of longitudinal guide layer in a kind of thermal power plant SCR method denitration flue gas even distribution system of the invention
Structural schematic diagram.
Fig. 6 is a kind of embodiment of lateral guide layer in a kind of thermal power plant SCR method denitration flue gas even distribution system of the invention
Structural schematic diagram.
Fig. 7 is a kind of knot of embodiment of monitor layer in a kind of thermal power plant SCR method denitration flue gas even distribution system of the invention
Structure schematic diagram.
Fig. 8 is the A-A cross-sectional view that main pipe is supported in Fig. 7.
In the above figure：1, flue；2, ammonia-spraying grid；3, catalyst layer；4, longitudinal guide layer；41, the first supporting beam；5,
Lateral guide layer；51, the second supporting beam；6, monitor layer；61, monitoring unit；611, backing tube；612, main pipe is supported；613, it cuts
Change part；614, differential manometer；615, branch pipe；7, rotation axis；71, solid shafting；72, hollow shaft；721, the first hollow shaft；722, second
Hollow shaft；723, third hollow shaft；8, deflector；9, driven gear；10, driving gear；11, motor；111, sleeve；112, it sells
Nail hole；12, turning handle.
Specific embodiment
With reference to Fig. 1 and Fig. 2, a kind of guiding device of the invention, including：Including rotation axis 7 and multiple deflectors 8, rotation
Axis 7 is made of a solid shafting 71 and multiple hollow shafts 72, and solid shafting 71 is center axis, and 71 one end of solid shafting is provided with deflector
8, the other end is arranged with the first hollow shaft 721, and deflector 8 is arranged in 721 one end of the first hollow shaft, and it is hollow that the other end is arranged with second
Deflector 8 is arranged in axis 722,722 one end of the second hollow shaft, and the other end is arranged with third hollow shaft 723, and multiple hollow shafts 72 are from interior
And set gradually outside, each hollow shaft 72 is correspondingly arranged a deflector 8；The separate water conservancy diversion of solid shafting 71 and each hollow shaft 72
One end of plate 8, which respectively corresponds, is provided with a rotatable parts.
In the embodiment above, solid shafting 71 is center axis, is used to support hollow shaft 72；71 one end of solid shafting, which is provided with, leads
Flowing plate 8, the other end are arranged with the first hollow shaft 721, and deflector 8 is arranged in 721 one end of the first hollow shaft, and the other end is arranged with second
Deflector 8 is arranged in hollow shaft 722,722 one end of the second hollow shaft, and the other end is arranged with third hollow shaft 723, multiple hollow shafts 72
It sets gradually from inside to outside, each hollow shaft 72 is correspondingly arranged a deflector 8, distinguishes solid shafting 71 or each hollow shaft 72
The shaft of deflector 8 is corresponded to for it, the corresponding deflector 8 of an axis makes the rotation of each deflector 8 that individually control can be achieved
System, can be respectively corresponded using one end of solid shafting 71 and the separate deflector 8 of each hollow shaft 72 and be set according to actual needs accordingly
The rotatable parts set adjust the angle of each deflector 8, be adjusted the flow velocity of fluid can by the guiding device.
A kind of guiding device of the invention also has following additional embodiment：
With reference to Fig. 3, according to one embodiment of present invention, rotatable parts include driven gear 9, and driven gear 9 is sheathed on
On solid shafting 71 or hollow shaft 72, driven gear 9 is connected with driving gear 10, and driving gear 10 is connected with motor 11；Motor 11
Output shaft connect with driving gear 10, driving gear 10 and 9 phase tooth of driven gear and.
In the embodiment above, rotatable parts include driven gear 9, and driven gear 9 is sheathed on solid shafting 71 or hollow shaft
On 72, driven gear 9 is connected with driving gear 10, and driving gear 10 is connected with motor 11；The output shaft and driving tooth of motor 11
10 connection of wheel, driving gear 10 and 9 phase tooth of driven gear and, make motor 11 that can drive solid shafting 71 or the rotation of hollow shaft 72, reality
The independent control that real mandrel 71 and hollow shaft 72 rotate.
With reference to Fig. 3, according to one embodiment of present invention, the output shaft of motor 11 includes multiple sleeves 111, each sleeve
One end offer pin hole 112, the other end is arranged with another sleeve；Multiple sleeves 111 are set gradually from inside to outside, adjacent
The sleeve of internal layer can be moved along the inner wall of the sleeve of outer layer in two sleeves；Innermost layer sleeve close to pin hole 112 one end with
Driving gear 10 connects, and the one end of outermost layer sleeve far from pin hole 112 is connect with motor 11；Pin is equipped in pin hole 112
Nail.
In the embodiment above, the output shaft of motor 11 includes multiple sleeves 111, and one end of each sleeve offers pin
Hole 112, the other end are arranged with another sleeve；Multiple sleeves 111 are set gradually from inside to outside, internal layer in two neighboring sleeve
Sleeve can be moved along the inner wall of the sleeve of outer layer；Innermost layer sleeve is connect close to one end of pin hole 112 with driving gear 10, most
The one end of outer layer sleeve far from pin hole 112 is connect with motor 11, is equipped with pin in pin hole 112, makes driving gear 10 can
To convert between solid shafting 71 and multiple hollow shafts 72 by the movement of adjacent sleeve, and then drive solid shafting 71 or hollow shaft
72 rotations.When adjusting the rotation of solid shafting 71, the sleeve of internal layer is moved in the sleeve of outer layer, in the pin of outermost layer sleeve
Rigging pilotage is followed closely in hole 112, then outermost layer sleeve is connect by the position of fixes sleeve with driving gear 10, and starting motor 11 is
The rotation of solid shafting 71 can be achieved；When needing the rotation of the first hollow shaft 721, only secondary outer layer sleeve need to be moved to outermost layer set
The outermost end of cylinder, then two sleeves are fixed with pin, driving gear 10 is connect with time outer layer sleeve, other and so on
The rotation of solid shafting 71 and multiple hollow shafts 72 can be realized, and then realize individually adjusting for each 8 angle of deflector.
With reference to Fig. 2, according to one embodiment of present invention, rotatable parts include turning handle 12.
In the embodiment above, rotatable parts also include turning handle 12, for realizing the manual angle tune of each deflector 8
Whole, adjusting the angle of deflector 8 can also both be manually adjusted with adjust automatically, and be gone out in special circumstances such as 11 failures of motor
Now, guiding device still can operate normally.
With reference to Fig. 1 and Fig. 3, according to one embodiment of present invention, motor 11 is servo motor.
In the embodiment above, motor 11 is servo motor, realize solid shafting 71 and each hollow shaft 72 can precisely
Angle control, while locking the angle and not changing.
With reference to Fig. 1 and Fig. 2, according to one embodiment of present invention, multiple deflectors 8 are respectively rectangle.
In the embodiment above, multiple deflectors 8 are respectively rectangle, are used for the case where fluid chamber is rectangle, make multiple
Deflector 8 can cover entire fluid chamber.
With reference to Fig. 4-Fig. 8, a kind of thermal power plant SCR method denitration flue gas even distribution system of the invention, including：It is set in turn in cigarette
Longitudinal guide layer 4, lateral guide layer 5 and monitor layer 6 between ammonia-spraying grid 2 in road 1 and the smoke inlet of catalyst layer 3.
Longitudinal guide layer 4 includes multiple above-mentioned guiding devices and the first supporting beam 41；Multiple guiding devices are horizontally disposed
In in the same level in flue 1, the both ends of the first supporting beam 41 are connect with the left and right sidewall of flue 1 respectively, each water conservancy diversion
The front side wall or rear wall of flue 1, the other end and the first supporting beam are stretched out in one end equipped with rotatable parts of the rotation axis 7 of device
41 connections；Lateral guide layer 5 includes multiple above-mentioned guiding devices and the second supporting beam 51；Multiple guiding devices are horizontally placed on
In same level in flue 1, the both ends of the second supporting beam 51 are connect with the front-rear side walls of flue 1 respectively；Each water conservancy diversion dress
The left side wall or right side wall of flue 1, the other end and the second supporting beam 51 are stretched out in the one end equipped with rotatable parts for the rotation axis 7 set
Connection.
Monitor layer 6 includes multiple monitoring unit 61 for being set to same level, and each monitoring unit 61 includes multiple leans on
Penstock 611, support main pipe 612, switch piece 613 and differential manometer 614, support main pipe 612 is horizontally placed in flue 1, multiple to lean on
Penstock 611 is embedded in support main pipe 612, and the side wall of support main pipe 612 is evenly arranged with multiple outlets, backing tube 611 into
Outlet is stretched out at gas end, and the inlet end of multiple backing tubes 611 is located at same level；Support one end and 1 side of flue of main pipe 612
The other end of wall connection, support main pipe 612 stretches out flue 1, and connect with switch piece 613, and switch piece 613 is provided with horizontal logical
Hole, the detection probe of differential manometer 614 pass through horizontal through hole and connect with the test lead of backing tube 611, and switch piece 613 can be female along support
The axial rotation of pipe 612.
In the embodiment above, the both ends of the first supporting beam 41 are connect with the left and right sidewall of flue 1 respectively, are used to support and are led
Device is flowed, the front side wall or rear wall of flue 1 are stretched out in one end equipped with rotatable parts of the rotation axis 7 of each guiding device, separately
One end is connect with the first supporting beam 41, and the rotation axis 7 of guiding device is made to be set up in 1 side wall of flue and the first support in front-rear direction
Between beam 41, rotatable parts are set to 1 outside of flue, carry out the adjustment of 8 regulation of longitudinal angle of deflector convenient for operations staff；Second support
The both ends of beam 51 are connect with the front-rear side walls of flue 1 respectively, for fixing the second supporting beam 51；The rotation axis of each guiding device
The left side wall or right side wall of flue 1 are stretched out in 7 one end equipped with rotatable parts, and the other end connect with the second supporting beam 51, makes to lead
The rotation axis 7 of stream device is set up between 1 side wall of flue and the second supporting beam 51 in left and right directions, and rotatable parts are set to flue
1 outside carries out the adjustment of 8 lateral angles of deflector convenient for operations staff.Multiple guiding devices are located at same level, guarantee each
Guiding device adjusting is the flue gas flow rate of the same cross section of flue 1.Pass through the water conservancy diversion of longitudinal guide layer 4 and lateral guide layer 5
The angular adjustment of plate 8 realizes that the vertical and horizontal of flue gas separate, and then realizes the equal of same cross section of the flue gas in flue 1
Cloth.
By the boiler smoke that ammonia-spraying grid 2 is handled, longitudinal guide layer 4 is initially entered, lateral guide layer 5 is entered back into, led to
The vertical and horizontal distribution for crossing multiple guiding devices, makes to be evenly distributed by the flue gas of longitudinal guide layer 4 in vertical direction, pass through
Homogenizing processing to flue gas, is finally realized by multiple backing tubes 611 in monitor layer 6 on a certain cross section of flue 1 again
The monitoring of flue gas flow rate.Specifically, flue gas is entered by the inlet end of backing tube 611, is connected by the test lead of backing tube 611
Differential manometer 614 pop one's head in, measure the flow velocity of flue gas at 611 inlet end of backing tube, then show by the display of differential manometer 614；
By switch piece 613 along the axial rotation of support main pipe 612, make the detection of the differential manometer 614 in the horizontal through hole of switch piece 613
Alignment probe supports the test lead of different backing tubes 611 in main pipe 612, and then realizes multiple spot monitoring, i.e., a certain in realization flue 1
The flue gas flow rate monitoring of cross section everywhere.According to the actual flow velocity distribution situation of flue gas, longitudinal guide layer 4 and lateral water conservancy diversion are adjusted
8 angle of deflector in layer 5, then flue gas flow rate everywhere is obtained by display, above-mentioned adjustment process is repeated, until display is aobvious
Until showing that flue gas flow rate is equal everywhere.Being evenly distributed with for denitration inlet flue gas flow field is thereby realized, when operating condition changes,
The position that 5 inner deflector 8 of longitudinal guide layer 4 and lateral guide layer need to only be readjusted can be evenly distributed with flue gas flow field again.
A kind of thermal power plant SCR method denitration flue gas even distribution system of the invention also has following additional embodiment：
With reference to Fig. 7, one embodiment of the present of invention, each outlet is connected with a branch pipe 615, backing tube vertically respectively
611 inlet end stretches out the free end of branch pipe 615, and backing tube 611 is fixed in branch pipe 615.
In the embodiment above, one branch pipe 615 of connection, branch pipe 615 are used for backing tube 611 vertically respectively for each outlet
Support is provided in the vertical direction, and the inlet end of backing tube 611 stretches out the free end of branch pipe 615, makes the inlet end of backing tube 611
It is evenly arranged on the same cross section of flue 1, backing tube 611 is fixed in branch pipe 615, makes the inlet end of each backing tube 611
Full pressure hole is directed at flow of flue gas direction.
With reference to Fig. 5 and Fig. 6, one embodiment of the present of invention, multiple deflectors 8 in guiding device are horizontally disposed with respectively
When, the cross section for the region overlay flue 1 that multiple deflectors 8 are formed.
In the embodiment above, when multiple deflectors 8 in guiding device are horizontally disposed with respectively, multiple formation of deflector 8
Region overlay flue 1 cross section, allow deflector 8 on 1 cross section of flue flue gas carry out vertical and horizontal adjusting,
And then realize the adjusting of entire 1 cross section of flue flue gas flow rate everywhere.
With reference to Fig. 4, one embodiment of the present of invention, longitudinal guide layer 4, lateral guide layer 5 and monitor layer 6 from top to bottom according to
The secondary smoke inlet front end for being set to catalyst layer 3.
In the embodiment above, longitudinal guide layer 4, lateral guide layer 5 and monitor layer 6 are set in turn in catalysis from top to bottom
The smoke inlet front end of oxidant layer 3 makes to enter same in catalyst layer 3 convenient for monitoring the flow velocity of 3 inlet flue gas of catalyst layer
The problems such as flue gas flow rate on cross section is equal, avoids local ageing, the blocking of catalyst, extends the service life of catalyst.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modification and variations of the invention belong to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of guiding device, which is characterized in that including rotation axis (7) and multiple deflectors (8), the rotation axis (7) is by one
A solid shafting (71) and multiple hollow shafts (72) composition, the solid shafting (71) are center axis, and described solid shafting (71) one end is set
It is equipped with deflector (8), the other end is arranged with the first hollow shaft (721), and deflector (8) are arranged in the first hollow shaft (721) one end, separately
One end is arranged with the second hollow shaft (722), and deflector (8) are arranged in the second hollow shaft (722) one end, and the other end is arranged with third sky
Mandrel (723), multiple hollow shafts (72) set gradually from inside to outside, and each hollow shaft (72) is correspondingly arranged a deflector (8)；
One end of the separate deflector (8) of the solid shafting (71) and each hollow shaft (72), which respectively corresponds, is provided with one
Rotatable parts.
2. guiding device according to claim 1, which is characterized in that the rotatable parts include driven gear (9), described
Driven gear (9) is sheathed in the solid shafting (71) or hollow shaft (72), and the driven gear (9) is connected with driving gear
(10), the driving gear (10) is connected with motor (11)；The output shaft of the motor (11) and the driving gear (10) are even
Connect, the driving gear (10) and the driven gear (9) phase tooth and.
3. guiding device according to claim 2, which is characterized in that the output shaft of the motor (11) includes multiple sleeves
(111), one end of each sleeve offers pin hole (112), and the other end is arranged with another sleeve；Multiple sleeves are from inside to outside
It sets gradually, the sleeve of internal layer can be moved along the inner wall of the sleeve of outer layer in two neighboring sleeve；Innermost layer sleeve is close to pin
The one end in hole (112) is connect with the driving gear (10), the one end of outermost layer sleeve far from pin hole (112) and the motor
(11) it connects；Pin is equipped in the pin hole (112).
4. guiding device according to claim 2, which is characterized in that the motor (11) is servo motor.
5. guiding device according to claim 1, which is characterized in that the rotatable parts include turning handle (12).
6. guiding device according to claim 1, which is characterized in that multiple deflectors (8) are respectively rectangle.
7. a kind of thermal power plant SCR method denitration flue gas even distribution system, which is characterized in that including：The spray being set in turn in flue (1)
Longitudinal guide layer (4), lateral guide layer (5) and monitor layer (6) between ammonia grid (2) and the smoke inlet of catalyst layer (3)；
The longitudinal direction guide layer (4) includes multiple guiding devices as described in claim 1 and the first supporting beam (41)；It is multiple to lead
Stream device be horizontally placed in the same level in the flue (1), the both ends of first supporting beam (41) respectively with institute
The left and right sidewall connection of flue (1) is stated, the cigarette is stretched out in one end equipped with rotatable parts of the rotation axis (7) of each guiding device
The front side wall or rear wall in road (1), the other end are connect with first supporting beam (41)；
The transverse direction guide layer (5) includes multiple guiding devices as described in claim 1 and the second supporting beam (51)；It is multiple to lead
Stream device be horizontally placed in the same level in the flue (1), the both ends of second supporting beam (51) respectively with institute
State the front-rear side walls connection of flue (1)；The cigarette is stretched out in one end equipped with rotatable parts of the rotation axis (7) of each guiding device
The left side wall or right side wall in road (1), the other end are connect with second supporting beam (51)；
The monitor layer (6) includes multiple monitoring unit (61) for being set to same level, each monitoring unit (61)
Include multiple backing tubes (611), support main pipe (612), switch piece (613) and differential manometer (614), the support main pipe (612)
It is horizontally placed in the flue (1), multiple backing tubes (611) are embedded in the support main pipe (612), the support
The side wall of main pipe (612) is evenly arranged with multiple outlets, and the inlet end of the backing tube (611) stretches out the outlet, and multiple
The inlet end of the backing tube (611) is located at same level；
One end of support main pipe (612) is connect with the flue (1) side wall, and the other end of support main pipe (612) is stretched
The flue (1) out, and connect with the switch piece (613), the switch piece (613) is provided with horizontal through hole, the minute-pressure
The detection probe of meter (614) passes through the horizontal through hole and connect with the test lead of the backing tube (611), the switch piece
It (613) can be along the axial rotation of support main pipe (612).
8. thermal power plant SCR method denitration flue gas even distribution system according to claim 7, which is characterized in that each outlet
It is connected with a branch pipe (615) vertically respectively, the inlet end of the backing tube (611) stretches out the free end of the branch pipe (615),
And the backing tube (611) is fixed in the branch pipe (615).
9. thermal power plant SCR method denitration flue gas even distribution system according to claim 7, which is characterized in that in guiding device
When multiple deflectors (8) are horizontally disposed with respectively, the cross section for the region overlay flue (1) that multiple deflectors (8) are formed.
10. thermal power plant SCR method denitration flue gas even distribution system according to claim 7, which is characterized in that the longitudinal direction water conservancy diversion
Layer (4), the lateral guide layer (5) and the monitor layer (6) are set in turn in the flue gas of the catalyst layer (3) from top to bottom
Entrance front end.
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| CN201810935826.5A CN108905614A (en) | 2018-08-16 | 2018-08-16 | A kind of guiding device and thermal power plant SCR method denitration flue gas even distribution system |
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| CN201810935826.5A CN108905614A (en) | 2018-08-16 | 2018-08-16 | A kind of guiding device and thermal power plant SCR method denitration flue gas even distribution system |
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| CN110566987A (en) * | 2019-08-16 | 2019-12-13 | 华电电力科学研究院有限公司 | Flue gas flow guiding device applied to flue and convenient to adjust and working method of flue gas flow guiding device |
| CN111068517A (en) * | 2019-12-10 | 2020-04-28 | 华南理工大学 | SCR reactor deflector angle adjusting device and method |
| CN111068518A (en) * | 2019-12-31 | 2020-04-28 | 国电九江发电有限公司 | Non-uniform ammonia spraying system and method for SCR denitration device |
| CN112121629A (en) * | 2020-08-07 | 2020-12-25 | 山东大学 | Segmented flow guide plate, flue gas on-line adjusting and flow equalizing device and flow equalizing method |
| CN113694762A (en) * | 2021-08-24 | 2021-11-26 | 西安热工研究院有限公司 | Self-adaptive adjustment dynamic ammonia injection mixer |
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