CN208943841U - A kind of flow guide system of guiding device and uniformly distributed denitration inlet flue gas flow field - Google Patents
A kind of flow guide system of guiding device and uniformly distributed denitration inlet flue gas flow field Download PDFInfo
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- CN208943841U CN208943841U CN201821324091.4U CN201821324091U CN208943841U CN 208943841 U CN208943841 U CN 208943841U CN 201821324091 U CN201821324091 U CN 201821324091U CN 208943841 U CN208943841 U CN 208943841U
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Abstract
The utility model discloses the flow guide systems of a kind of guiding device and uniformly distributed denitration inlet flue gas flow field, 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 utility model 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 utility model belongs to Flue Gas Denitration Technology of Coal-buming Power Plant field, more particularly, to a kind of guiding device and uniformly distributed denitration
The flow guide system in inlet flue gas flow field.
Background technique
Coal-burning power plant, China generally completes minimum discharge transformation at present, and the nitrous oxides concentration of denitrating system outlet is average
Value is 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 lead to the abrasion, blocking and the reduction in service life of catalyst, and then cause denitrating system operation stability very poor.
Denitrating system inlet flue gas velocity field deviation is excessive, and in flue gas, caused denitration efficiency is not after denitrating catalyst
, specifically, a part of nitrous oxides concentration of denitrating system Outlet Section is excessively high, easily causes total row's mouth nitrous oxides concentration instantaneous
Exceeded phenomenon；Denitrating system Outlet Section another part the escaping of ammonia is excessive, easily causes air preheater ammonium hydrogen sulfate fouling blockage
The phenomenon that, air preheater resistance is increased, thermoelectricity station service power consumption rate is directly affected；More serious person reduces the heat exchange efficiency of air preheater,
Boiler efficiency is influenced 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.
Utility model content
To solve the above-mentioned problems, leading the utility model proposes a kind of guiding device and uniformly distributed denitration inlet flue gas flow field
Streaming system, guiding device can realize the independent control of multiple deflectors；The flow guide system in uniformly distributed denitration inlet flue gas flow field, passes through
The reasonable Arrangement that deflector is carried out between denitrating system ammonia-spraying grid and denitrating catalyst, is adopted in denitrating catalyst inlet section
Switch on-line monitoring flue gas flow field with multiple spot, using flue gas flow field practical in flue as foundation, carries out longitudinal guide layer and laterally lead
The combination of fluid layer is adjusted, to realize being evenly distributed with for denitration inlet flue gas flow field, and then is extended catalyst service life, is improved denitration
The stability of system operation.
In order to achieve the above object, the utility model 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 utility model, solid shafting are center axis, are used to support hollow shaft；Solid shafting one end
It is provided with deflector, the other end is arranged with the first hollow shaft, and deflector is arranged in first hollow shaft one end, and the other end is arranged with second
Deflector is arranged in hollow shaft, second hollow shaft one end, and the other end is arranged with third hollow shaft, and multiple hollow shafts are from inside to outside successively
Setting, each hollow shaft are correspondingly arranged a deflector, make solid shafting or each hollow shaft is respectively that it corresponds to turning for deflector
Axis, the corresponding deflector of axis, makes the rotation of each deflector that individually control can be achieved, accordingly can according to actual needs,
A rotatable parts for respectively corresponding setting using one end of solid shafting and the separate deflector of each hollow shaft are each to adjust
The angle of deflector be adjusted the flow velocity of fluid can by the guiding device.
In addition, a kind of guiding device provided by the utility model 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 utility model, rotatable parts include driven gear, and driven gear is sheathed on solid
On axis or hollow shaft, driven gear is connected with driving gear, and driving gear is connected with motor；The output shaft and driving gear of motor
Connection, driving gear and driven gear phase tooth and, make motor that can drive solid shafting or hollow shaft rotation, realization solid shafting and hollow
The independent control of axis 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.
A kind of guiding device according to the present utility model, the output shaft of motor include multiple sleeves, one end of each sleeve
Pin hole is offered, the other end is arranged with another sleeve；Multiple sleeves are set gradually from inside to outside, interior in two neighboring sleeve
The sleeve of layer 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, most
Outer layer sleeve is connected to motor far from one end of pin hole, and pin is equipped in pin hole, passes through driving gear adjacent
The movement of sleeve is converted between solid shafting and multiple hollow shafts, and then drives solid shafting or hollow shaft rotation.It is solid when adjusting
When axis rotates, 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, fixing sleeve
Outermost layer sleeve, then connect by the position of cylinder with driving gear, and the rotation of solid shafting can be realized in starting motor；When needing the
When one hollow shaft rotates, secondary outer layer sleeve only need to be moved to the outermost end of outermost layer sleeve, then fix two sleeves with pin,
Driving gear is connect with time outer layer sleeve, other and so on the rotation of solid shafting and multiple hollow shafts can be realized,
And then realize individually adjusting for each deflector angle.
Preferably, the rotatable parts include turning handle.
A kind of guiding device according to the present utility model, rotatable parts also include turning handle, for realizing each deflector
Manual angle adjustment, adjusting the angle of deflector can also both be manually adjusted with adjust automatically, and in spies such as electrical faults
When different situation occurs, guiding device still can be operated normally.
Preferably, the motor is servo motor.
A kind of guiding device according to the present utility model, motor are servo motor, make solid shafting and each hollow shaft can
It realizes that 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 utility model, multiple deflectors are respectively rectangle, are rectangle for fluid chamber
The case where, make multiple deflectors that can cover entire fluid chamber.
A kind of flow guide system in uniformly distributed denitration inlet flue gas flow field, comprising: be set in turn in ammonia-spraying grid in flue with
Longitudinal guide layer, lateral guide layer and monitor layer between the smoke inlet of catalyst 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 flow guide system in uniformly distributed denitration inlet flue gas flow field according to the present utility model, the both ends point of the first supporting beam
It is not connect with the left and right sidewall of flue, is used to support guiding device, the rotation axis of each guiding device is equipped with rotatable parts
The front side wall or rear wall of flue are stretched out in one end, and the other end is connect with the first supporting beam, make the rotation axis of guiding device in front and back
Orientation stand is set between flue sidewall and the first supporting beam, and rotatable parts are set on the outside of flue, is led convenient for operations staff
The adjustment of flowing plate regulation of longitudinal 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；
The left side wall or right side wall of flue, the other end and second are stretched out in one end equipped with rotatable parts of the rotation axis of each guiding device
Supporting beam connection, is set up in the rotation axis of guiding device between flue sidewall and the second supporting beam in left and right directions, rotation section
Part is set on the outside of flue, carries out the adjustment of deflector lateral angles convenient for operations staff.Multiple guiding devices are located at same level
Face, guaranteeing that each guiding device is adjusted is the flue gas flow rate of the same cross section of flue.Pass through longitudinal guide layer and lateral water conservancy diversion
The angular adjustment of the deflector of layer realizes that the vertical and horizontal of flue gas separate, and then realizes that flue gas is same transversal in flue
Face is evenly distributed with.
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 reasonable cloth that the utility model passes through the progress deflector between denitrating system ammonia-spraying grid and denitration catalyst oxidant layer
It sets, in denitrating catalyst inlet section using multiple spot switching on-line monitoring flue gas flow field, realizes with flue gas stream practical in flue
Field is foundation, and the combination for carrying out longitudinal guide layer and transverse direction guide layer is adjusted, thus realize being evenly distributed with for denitration inlet flue gas flow field,
The problems such as so as to avoid catalyst local ageing, blocking, extend the service life of catalyst；Denitrating system is avoided always to arrange
The excessive phenomenon of the instantaneous exceeded and local the escaping of ammonia of mouth nitrous oxides concentration, improves the stability of denitrating system operation；Pass through
The design of monitor and linkage motor, realizes the on-line optimization of flue gas flow field；Meanwhile air preheater is reduced to a certain extent certainly
The fouling blockage problem of body, extends the cycle of operation of air preheater, saves repair and maintenance cost.
In addition, a kind of flow guide system in uniformly distributed denitration inlet flue gas flow field provided by the utility model can also have it is following
Additional technical 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 flow guide system in uniformly distributed denitration inlet flue gas flow field according to the present utility model, each outlet connects vertically respectively
A branch pipe is connect, branch pipe is used to provide support in the vertical direction to backing tube, and the inlet end of backing tube stretches out the freedom of branch pipe
End, is evenly arranged on the inlet end of backing tube on the same cross section of flue, backing tube is fixed in branch pipe, makes each backing tube
The full pressure hole of inlet end is directed at 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 flow guide system in uniformly distributed denitration inlet flue gas flow field according to the present utility model, multiple in guiding device lead
When flowing plate is horizontally disposed with respectively, the cross section for the region overlay flue that multiple deflectors are formed allows deflector to flue cross
Flue gas on section carries out vertical and horizontal adjusting, and then realizes 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 flow guide system in uniformly distributed denitration inlet flue gas flow field according to the present utility model, longitudinal guide layer are laterally led
Fluid layer and monitor layer are set in turn in the smoke inlet front end of catalyst layer from top to bottom, convenient for monitoring catalyst layer inlet cigarette
The flow velocity of gas keeps the flue gas flow rate entered on the same cross section in catalyst layer equal, avoids the local ageing of catalyst, blocks up
The problems such as plug, extends the service life of catalyst.
Detailed description of the invention
The utility model 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 utility model.
Fig. 2 is a kind of structural schematic diagram of another embodiment of guiding device of the utility model
Fig. 3 is the partial enlarged view of A in Fig. 1.
Fig. 4 is a kind of installation site structural representation of the flow guide system in uniformly distributed denitration inlet flue gas flow field of the utility model
Figure.
Fig. 5 is that longitudinal guide layer in a kind of flow guide system in uniformly distributed denitration inlet flue gas flow field of the utility model is a kind of
The structural schematic diagram of embodiment.
Fig. 6 is that the lateral guide layer in a kind of flow guide system in uniformly distributed denitration inlet flue gas flow field of the utility model is a kind of
The structural schematic diagram of embodiment.
Fig. 7 is a kind of implementation of monitor layer in a kind of flow guide system in uniformly distributed denitration inlet flue gas flow field of the utility model
The structural schematic diagram of example.
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 utility model, comprising: 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, 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；Solid shafting 71 and each hollow shaft 72 it is separate
One end of deflector 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 utility model also has following additional embodiment:
With reference to Fig. 3, one embodiment according to the present utility model, rotatable parts include driven gear 9,9 sets of driven gear
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；Electricity
The output shaft of machine 11 is 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, one embodiment according to the present utility model, the output shaft of motor 11 includes multiple sleeves 111, each
One end of sleeve offers pin hole 112, and the other end is arranged with another sleeve；Multiple sleeves 111 are set gradually from inside to outside,
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 close to pin hole 112 one
End is connect with driving gear 10, and the one end of outermost layer sleeve far from pin hole 112 is connect with motor 11；Assembly in pin hole 112
There is pin.
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, one embodiment according to the present utility model, 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, one embodiment according to the present utility model, 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, one embodiment according to the present utility model, 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, the flow guide system in a kind of uniformly distributed denitration inlet flue gas flow field of the utility model, comprising: successively
Be set to longitudinal guide layer 4 between the ammonia-spraying grid 2 in flue 1 and the smoke inlet of catalyst layer 3, lateral guide layer 5 and
Monitor layer 6.
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 flow guide system in uniformly distributed denitration inlet flue gas flow field of the utility model, also has following additional embodiment:
With reference to Fig. 7, one embodiment of the utility model, each outlet is connected with a branch pipe 615, backrest vertically respectively
The inlet end of pipe 611 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 utility model, level is set multiple deflectors 8 in guiding device respectively
When setting, 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 utility model, longitudinal guide layer 4, lateral guide layer 5 and monitor layer 6 from upper and
Under be set in turn in the smoke inlet front end of 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, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modification and variations of the utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model 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 flow guide system in uniformly distributed denitration inlet flue gas flow field characterized by comprising be set in turn in flue (1)
Ammonia-spraying grid (2) and catalyst layer (3) smoke inlet between longitudinal guide layer (4), lateral guide layer (5) and monitor layer
(6)；
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. the flow guide system in uniformly distributed denitration inlet flue gas flow field according to claim 7, which is characterized in that go out described in each
Mouth is connected with a branch pipe (615) vertically respectively, and the inlet end of the backing tube (611) stretches out the freedom of the branch pipe (615)
End, and the backing tube (611) is fixed in the branch pipe (615).
9. the flow guide system in uniformly distributed denitration inlet flue gas flow field according to claim 7, which is characterized in that in guiding device
Multiple deflectors (8) when being horizontally disposed with respectively, the cross section for the region overlay flue (1) that multiple deflectors (8) are formed.
10. the flow guide system in uniformly distributed denitration inlet flue gas flow field according to claim 7, which is characterized in that the longitudinal direction
Guide layer (4), the lateral guide layer (5) and the monitor layer (6) are set in turn in the catalyst layer (3) from top to bottom
Smoke inlet front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821324091.4U CN208943841U (en) | 2018-08-16 | 2018-08-16 | A kind of flow guide system of guiding device and uniformly distributed denitration inlet flue gas flow field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821324091.4U CN208943841U (en) | 2018-08-16 | 2018-08-16 | A kind of flow guide system of guiding device and uniformly distributed denitration inlet flue gas flow field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208943841U true CN208943841U (en) | 2019-06-07 |
Family
ID=66733951
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821324091.4U Expired - Fee Related CN208943841U (en) | 2018-08-16 | 2018-08-16 | A kind of flow guide system of guiding device and uniformly distributed denitration inlet flue gas flow field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208943841U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905614A (en) * | 2018-08-16 | 2018-11-30 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of guiding device and thermal power plant SCR method denitration flue gas even distribution system |
| 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 |
| CN110917875A (en) * | 2019-11-28 | 2020-03-27 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Guide vane, device and method for preventing soot formation of flue gas |
| CN111998714A (en) * | 2020-09-18 | 2020-11-27 | 西安热工研究院有限公司 | Automatic control system and control method for uniformity of gas flow field |
| CN112664968A (en) * | 2020-11-11 | 2021-04-16 | 湖南华电常德发电有限公司 | Device for adjusting flue gas flow field through adjusting guide plate and using method thereof |
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2018
- 2018-08-16 CN CN201821324091.4U patent/CN208943841U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905614A (en) * | 2018-08-16 | 2018-11-30 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of guiding device and thermal power plant SCR method denitration flue gas even distribution system |
| 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 |
| CN110566987B (en) * | 2019-08-16 | 2024-04-12 | 华电电力科学研究院有限公司 | Flue gas flow guiding device applied in flue and convenient to adjust and working method thereof |
| CN110917875A (en) * | 2019-11-28 | 2020-03-27 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Guide vane, device and method for preventing soot formation of flue gas |
| CN110917875B (en) * | 2019-11-28 | 2021-08-27 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Guide vane, device and method for preventing soot formation of flue gas |
| CN111998714A (en) * | 2020-09-18 | 2020-11-27 | 西安热工研究院有限公司 | Automatic control system and control method for uniformity of gas flow field |
| CN112664968A (en) * | 2020-11-11 | 2021-04-16 | 湖南华电常德发电有限公司 | Device for adjusting flue gas flow field through adjusting guide plate and using method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 Termination date: 20200816 |