CN208275260U - One kind being used for the diluted air leakage preventing device of denitration - Google Patents
One kind being used for the diluted air leakage preventing device of denitration Download PDFInfo
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- CN208275260U CN208275260U CN201721658127.8U CN201721658127U CN208275260U CN 208275260 U CN208275260 U CN 208275260U CN 201721658127 U CN201721658127 U CN 201721658127U CN 208275260 U CN208275260 U CN 208275260U
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- ammonia
- denitration
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Abstract
One kind of the utility model is used for the diluted air leakage preventing device of denitration, belongs to power plant's denitration device field.The utility model includes dilution mechanism and leakproof wind mechanism, diluting mechanism includes main air blower, standby fan, the first ammonia/air mixer and the second ammonia/air mixer, main air blower is connected with main air blower pipeline, standby fan is connected with standby fan pipeline, main air blower pipeline, standby fan pipeline and main pipeline are connected in casing, and the first ammonia/air mixer and the second ammonia/air mixer are connected by diluting air piping with main pipeline；Leakproof wind mechanism includes rotation axis and the lambdoid component that keeps out the wind, and the component that keeps out the wind is fixedly installed in rotation axis, and rotation axis is set to the junction of main air blower pipeline Yu standby fan pipeline.The utility model is provided with leakproof wind mechanism in dilution mechanism, the pipeline of another blower can be carried out blocking closing by leakproof wind mechanism, and then reduce air leak rate of air curtain by being provided with main air blower and standby fan.
Description
Technical field
The utility model belongs to power plant's denitration device field, specifically a kind of for the diluted Anti-air-leakage dress of denitration
It sets.
Background technique
Nitrogen oxides (NO, the NO generated by fire coal2And N2O) be current environmental pollution one of important sources, these nitrogen oxygen
Compound can result in a series of problems, such as photochemical fog, acid rain, ozone layer depletion, greenhouse effects.It is increasingly tighter in order to adapt to
The emission request of lattice, domestic and international power plant start to install and use denitrification apparatus successively.And in numerous method of denitration, selectively urge
Change reduction (SCR) method to be widely applied with its mature technical matters and stable denitration efficiency.The principle of SCR technology is
Pass through reducing agent (such as NH3), at moderate temperatures, and have under catalyst existence condition, is nitrogen (N NOx conversion2) and water
(H2O).By the requirement of SCR denitration reaction temperature, SCR denitration device need to be mounted on boiler economizer and be exported to air preheat
Between the flue of device entrance, the denitrification apparatus running temperature at this generally requires to be 300 DEG C~400 DEG C, and dustiness is big.
SCR system generally mixes with air system by the stocking system of ammonia, ammonia preparation system, ammonia, ammonia sprays into system,
The composition such as Benitration reactor system, detecting and controlling system.Wherein ammonia mix with air the equipment of system mainly by dilution air and
Ammonia/air mixer composition, after ammonia and air for the conveying of ammonia preparation system to come are mixed in a certain ratio dilution
System is sprayed into ammonia, enters back into Benitration reactor system.But the dilution air system used now is in the engineering of work
In will appear the case where leaking out, cause ammonia leakage, have risk, and when pressure fan damage when need shut-down (breakdown) mainteance, cause
It is inconvenient.
Through retrieving, the title of innovation and creation are as follows: the new denitration dilution wind system of one kind (application number: 201620474380.7,
The applying date: 2016.05.23), this application includes two pressure fan, and described two pressure fan pass through main pipe connection at least one
Air supply tube, each air supply tube are sequentially connected a flow-through orifice and one ammonia/air ammonia/air mixer, go back in the main pipe
Connect a compressed air hose；The pressure fan is primary air fan；The air supply tube is two；The ammonia/air ammonia/air mixing
The arrival end of device connects an ammonia pipe, and outlet end connects an ammonia and sprays grid；The pipe ammonia/air ammonia/air mixer enters
Mouth end connects a Hand-operated butterfly valve；The outlet end of the pressure fan is equipped with an electric butterfly valve；The compressed air hose is equipped with an electricity
Dynamic shut-off valve.Although this application when a pressure fan breaks down, does not need closing, whole system is overhauled, should
Application case does not have the Air Leakage of very good solution denitration dilution wind system.
Utility model content
1. utility model technical problems to be solved
Shutdown maintenance is needed the purpose of the utility model is to overcome the dilution wind system of denitration in the prior art or is easy
The problem of leaking out provides one kind and is used for the diluted air leakage preventing device of denitration, by being provided with main air blower and standby fan,
It is provided with leakproof wind mechanism in dilution mechanism, when a blower works, leakproof wind mechanism can be by the pipeline of another blower
Blocking closing is carried out, air leak rate of air curtain is not only reduced, system can also can work normally when blower failure needs to repair.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model are as follows:
One kind of the utility model is used for the diluted air leakage preventing device of denitration, including dilution mechanism, dilution mechanism packet
Main air blower, standby fan, the first ammonia/air mixer and the second ammonia/air mixer are included, the main air blower is connected with main air blower
Pipeline, the standby fan are connected with standby fan pipeline, and main air blower pipeline, standby fan pipeline and main pipeline are connected in casing
Interior, first ammonia/air mixer and the second ammonia/air mixer are connected by diluting air piping with main pipeline；Anti-air-leakage
Mechanism, the leakproof wind mechanism include rotation axis and keep out the wind component, and component one end rotational installation of keeping out the wind is described in rotation axis
Rotation axis is set to the junction of main air blower pipeline Yu standby fan pipeline, and the component that keeps out the wind includes that secondary wind deflector and master are kept out the wind
Plate.
Preferably, it is set in first ammonia/air mixer and the second ammonia/air mixer exit dilution air piping
There is non-return flap.
Preferably, angle a is 30~45 degree between the secondary wind deflector and main wind deflector.
Preferably, the main air blower pipeline and the vertically symmetrical setting of standby fan pipeline exit.
Preferably, one end setting gasket of the secondary wind deflector and main wind deflector far from rotation axis.
Preferably, the panel of the casing is equipped with display board, and casing is stretched out in the rotation axis front end, and before rotation axis
End is equipped with pointer, and the pointer tip is correspondingly arranged with display board.
Preferably, the main air blower pipeline is identical with the cross-sectional area of standby fan pipeline.
Preferably, the area of the secondary wind deflector and main wind deflector is identical as the cross-sectional area of main air blower pipeline.
Preferably, the main pipeline upper end is connected with the middle part of dilution air piping.
3. beneficial effect
Using technical solution provided by the utility model, compared with prior art, have the following beneficial effects:
(1) one kind of the utility model is used for the diluted air leakage preventing device of denitration, by being provided with main air blower and spare wind
Machine is provided with leakproof wind mechanism in dilution mechanism, and when a blower works, leakproof wind mechanism can be by another blower
Pipeline carries out blocking closing, not only reduces air leak rate of air curtain, can also when blower break down need to repair when system can be normal
Work.
(2) one kind of the utility model is used for the diluted air leakage preventing device of denitration, manages in ammonia/air mixer exit
Non-return flap is provided in road, so that ammonia/air mixer exit air-flow one-way flow, prevents air from flowing backward mixed into ammonia/air
Clutch causes danger.
(3) one kind of the utility model is used for the diluted air leakage preventing device of denitration, and display board, rotation axis are equipped on panel
Casing is stretched out in front end and front end is equipped with pointer, can easily know the component that keeps out the wind by the position of the display board of pointer meaning
Aperture and direction, convenient for adjust.
(4) one kind of the utility model is used for the diluted air leakage preventing device of denitration, angle between secondary wind deflector and main wind deflector
Spending a is 30~45 degree, and secondary wind deflector and main wind deflector can be prevented on the basis of guaranteeing air quantity while blocking two pipelines,
Secondary wind deflector and the gasket of main wind deflector edge setting make sealing effect more preferable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlargement diagram of the utility model.
Label declaration in schematic diagram:
100, mechanism is diluted；111, main air blower；112, standby fan；121, main air blower pipeline；122, standby fan pipeline；
130, casing；131, panel；140, main pipeline；151, the first ammonia/air mixer；152, the second ammonia/air mixer；
160, air piping is diluted；170, non-return flap；
200, leakproof wind mechanism；210, rotation axis；220, keep out the wind component；221, secondary wind deflector；222, main wind deflector；223,
Gasket；230, pointer；240, display board.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states, several embodiments of the utility model is given in attached drawing, still, the utility model can come real in many different forms
It is existing, however it is not limited to embodiment described herein, on the contrary, purpose of providing these embodiments is makes public affairs to the utility model
It is more thorough and comprehensive to open content.
It should be noted that it can directly on the other element when element is referred to as " being fixedly arranged on " another element
Or there may also be elements placed in the middle；When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements；Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical；Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model；Term " and or " used herein includes
Any and all combinations of one or more related listed items.
Embodiment 1
As depicted in figs. 1 and 2, one kind of the present embodiment is used for the diluted air leakage preventing device of denitration, including dilution mechanism 100
With leakproof wind mechanism 200, leakproof wind mechanism 200 is set in dilution mechanism 100, and leakproof wind mechanism 200 is for reducing dilution machine
The air leak rate of air curtain of structure 100.Diluting mechanism 100 includes main air blower 111, standby fan 112, the first ammonia/air mixer 151 and second
Ammonia/air mixer 152, main air blower 111 are connected with main air blower pipeline 121, and standby fan 112 is connected with standby fan pipeline
122, main air blower pipeline 121, standby fan pipeline 122 and main pipeline 140 are connected in casing 130,121 He of main air blower pipeline
The vertically symmetrical setting in 122 exit of standby fan pipeline, the cross section of the main air blower pipeline 121 and standby fan pipeline 122
Product is identical.First ammonia/air mixer 151 and the second ammonia/air mixer 152 pass through dilution air piping 160 and main pipeline 140
It is connected；140 upper end of main pipeline is connected to the middle part of dilution air piping 160.First ammonia/air mixer 151 and the second ammonia/
Non-return flap 170 is equipped in the dilution air piping 160 in the exit of air mixer 152, non-return flap 170 can make ammonia/air
Air-flow one-way flow at mixer outlet prevents air from flowing backward into ammonia/air mixer, causes danger.
The leakproof wind mechanism 200 of the present embodiment includes rotation axis 210 and the component 220 that keeps out the wind, and the component 220 that keeps out the wind includes
The all identical secondary wind deflector 221 of size shape and main wind deflector 222,222 one end phase of secondary wind deflector 221 and main wind deflector
Even, and secondary wind deflector 221 and main wind deflector 222 constitute " people " font, area and the master of secondary wind deflector 221 and main wind deflector 222
Fan pipeline 121 is identical with the cross-sectional area of standby fan pipeline 122；Angle a between secondary wind deflector 221 and main wind deflector 222
It is 30~45 degree, the present embodiment selects 45 degree of angles, can prevent secondary wind deflector 221 and master from keeping out the wind on the basis of guaranteeing air quantity
Plate 222 blocks two pipelines simultaneously.The component 220 that keeps out the wind is rotatablely installed in rotation axis 210, and the rotation axis 210 is set to master
The junction of Fan pipeline 121 and standby fan pipeline 122, when main air blower 111 works, air-flow is sent into and is led by main air blower 111
Fan pipeline 121, air-flow push main wind deflector 222 to rotate around rotation axis 210, and secondary wind deflector 221 is with main wind deflector 222
It rotates and rotates, last pair wind deflector 221 blocks standby fan pipeline 122, prevents air-flow from occurring from standby fan pipeline 122
Leakage.Moreover, it is worth noting that the edge of secondary wind deflector 221 and main wind deflector 222 is equipped with gasket 223, so that sealing
The effect of air-flow is more preferable.
The panel 131 of the casing 130 of the present embodiment is equipped with display board 240, and casing is stretched out in 210 front end of rotation axis
130, and the forward end that rotation axis 210 stretches out casing 130 is provided with pointer 230, pointer 230 is rotated with rotation axis 210
And rotate, 230 tip of pointer is correspondingly arranged with display board 240.The display board 240 is indicating area area and pointer 230
Rotational angle matches, and when main air blower 111 works, air-flow pushes main wind deflector 222 that secondary wind deflector 221 is made to block spare wind
When machine pipeline 122, pointer 230 is just directed toward the right end of 240 display area of display board；When standby fan 112 works, air-flow
When pushing secondary wind deflector 221 that winner's wind deflector 222 is made to block main air blower pipeline 121, it is aobvious that pointer 230 is just directed toward display board 240
Show the left end in region.By observation pointer 230 be directed toward display board 240 show region, it is known that main wind deflector 222 or
Whether person's pair wind deflector 221 blocks main air blower pipeline 121 or standby fan pipeline 122.
When main air blower 111 breaks down, closes main air blower 111 and open standby fan 112 simultaneously, standby fan 112 is blown
The air-flow sent pushes secondary wind deflector 221 that winner's wind deflector 222 is made to block main air blower pipeline 121, when pointer 230 is directed toward display board
When the left end of 240 display areas, illustrates that main wind deflector 222 blocks main air blower pipeline 121 completely, main air blower 111 can be opened
It is overhauled, reduces air leak rate of air curtain while ensure that the normal work of system.
Certain embodiment of the utility model above described embodiment only expresses, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model；It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model；Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (9)
1. one kind is used for the diluted air leakage preventing device of denitration, it is characterised in that: including
It dilutes mechanism (100), the dilution mechanism (100) includes main air blower (111), standby fan (112), the first ammonia/air
Mixer (151) and the second ammonia/air mixer (152), the main air blower (111) is connected with main air blower pipeline (121), described
Standby fan (112) is connected with standby fan pipeline (122), main air blower pipeline (121), standby fan pipeline (122) and supervisor
Road (140) is connected in casing (130), and first ammonia/air mixer (151) and the second ammonia/air mixer (152) are logical
Dilution air piping (160) is crossed to be connected with main pipeline (140)；
Leakproof wind mechanism (200), the leakproof wind mechanism (200) includes rotation axis (210) and the component that keeps out the wind (220), this keeps out the wind
The rotational installation of component (220) one end on rotation axis (210), the rotation axis (210) be set to main air blower pipeline (121) with it is standby
With the junction of Fan pipeline (122), the component that keeps out the wind (220) includes secondary wind deflector (221) and main wind deflector (222).
2. according to claim 1 a kind of for the diluted air leakage preventing device of denitration, it is characterised in that: first ammonia/
The dilution air piping (160) in air mixer (151) and the second ammonia/air mixer (152) exit is equipped with non-return flap
(170)。
3. according to claim 1 a kind of for the diluted air leakage preventing device of denitration, it is characterised in that: the pair wind deflector
(221) angle a is 30~45 degree between main wind deflector (222).
4. according to claim 1 a kind of for the diluted air leakage preventing device of denitration, it is characterised in that: the main air blower pipe
Road (121) and the vertically symmetrical setting in standby fan pipeline (122) exit.
5. according to claim 1 a kind of for the diluted air leakage preventing device of denitration, it is characterised in that: the pair wind deflector
(221) and gasket (223) are arranged in one end of main wind deflector (222) separate rotation axis (210).
6. according to claim 1 a kind of for the diluted air leakage preventing device of denitration, it is characterised in that: further include casing
(130), the panel (131) of the casing (130) is equipped with display board (240), and casing is stretched out in rotation axis (210) front end
(130), and the front end of rotation axis (210) is equipped with pointer (230), and pointer (230) tip is corresponding with display board (240) to be set
It sets.
7. according to claim 1-6 a kind of for the diluted air leakage preventing device of denitration, it is characterised in that: described
Main air blower pipeline (121) is identical with the cross-sectional area of standby fan pipeline (122).
8. according to claim 7 a kind of for the diluted air leakage preventing device of denitration, it is characterised in that: the pair wind deflector
(221) and the area of main wind deflector (222) is identical as the cross-sectional area of main air blower pipeline (121).
9. according to claim 7 a kind of for the diluted air leakage preventing device of denitration, it is characterised in that: the main pipeline
(140) upper end is connected with the middle part of dilution air piping (160).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721658127.8U CN208275260U (en) | 2017-12-03 | 2017-12-03 | One kind being used for the diluted air leakage preventing device of denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721658127.8U CN208275260U (en) | 2017-12-03 | 2017-12-03 | One kind being used for the diluted air leakage preventing device of denitration |
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| Publication Number | Publication Date |
|---|---|
| CN208275260U true CN208275260U (en) | 2018-12-25 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721658127.8U Expired - Fee Related CN208275260U (en) | 2017-12-03 | 2017-12-03 | One kind being used for the diluted air leakage preventing device of denitration |
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|---|---|
| CN (1) | CN208275260U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242606A (en) * | 2019-05-05 | 2019-09-17 | 贵州航天林泉电机有限公司 | A kind of highly reliable silent ventilator component |
| CN110285931A (en) * | 2019-07-08 | 2019-09-27 | 广州珠江电力有限公司 | A kind of detection method of heat-engine plant desulfurizer flue gas heat-exchange unit air leak rate of air curtain |
-
2017
- 2017-12-03 CN CN201721658127.8U patent/CN208275260U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242606A (en) * | 2019-05-05 | 2019-09-17 | 贵州航天林泉电机有限公司 | A kind of highly reliable silent ventilator component |
| CN110285931A (en) * | 2019-07-08 | 2019-09-27 | 广州珠江电力有限公司 | A kind of detection method of heat-engine plant desulfurizer flue gas heat-exchange unit air leak rate of air curtain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20181225 Termination date: 20201203 |