CN213193162U - Swing adjustment formula denitration guide plate structure - Google Patents
Swing adjustment formula denitration guide plate structure Download PDFInfo
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- CN213193162U CN213193162U CN202021559126.XU CN202021559126U CN213193162U CN 213193162 U CN213193162 U CN 213193162U CN 202021559126 U CN202021559126 U CN 202021559126U CN 213193162 U CN213193162 U CN 213193162U
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Abstract
The utility model relates to a swing regulation formula denitration guide plate structure, swing regulation formula denitration guide plate structure is including being used for connecting the flue casing between denitration catalyst bed and the top of ammonia injection grid, the lower extreme of flue casing has into the mouth, the right-hand member has the outlet flue, guide plate structure is still including setting up the guide plate group in the flue casing, guide plate group is including at least three guide plate of interval arrangement side by side, each guide plate is from advancing the mouth towards the arc that outlet flue department buckles and extends, the camber of the guide plate that lies in the downside in two adjacent guide plates is greater than the guide plate camber that lies in the upside, space between two adjacent guide plates constitutes the passageway that supplies the flue gas circulation, the flue casing still is equipped with outward and is used for driving each guide plate swing with the adjustment mechanism of passageway aperture size. The flue gas entering the denitration catalyst layer is ensured to be uniformly distributed on the radial section, so that the reaction of each part of the denitration catalyst layer is balanced.
Description
Technical Field
The utility model relates to a swing adjustment formula denitration guide plate structure.
Background
In the flue gas denitration process of thermal power plant, the back is come out from the boiler to the flue gas, gets into the economizer through the pipeline, later goes into the denitration catalyst layer after ammonia injection grid handles, and current equipment layout, because the flue gas upward flow when getting into through ammonia injection grid, and after the top discharge from ammonia injection grid, need the switching-over downward flow again and get into the denitration catalyst layer. In the flue gas reversing process, the SCR denitration reaction is unbalanced and the catalyst is seriously worn due to the change of the flow velocity and unstable flow of the flue gas. The catalyst consumption is too fast in the place with large flue gas flow, and the catalyst consumption with small flow is less, so that the consumption of the denitration catalyst layer is uneven, and the replacement cost in the later period is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a formula denitration guide plate structure is adjusted in swing to solve the problem among the prior art.
In order to solve the problem, the utility model relates to a swing regulation formula denitration guide plate structure adopts following technical scheme:
swing regulation formula denitration guide plate structure is including being used for connecting the flue casing between taking off round pin catalyst layer and ammonia injection grid top, the lower extreme of flue casing has into the mouth, the right-hand member has the outlet flue, the guide plate structure is still including setting up the guide plate group in the flue casing, guide plate group includes at least three guide plate of interval arrangement side by side, each guide plate is from advancing the mouth towards the arc of outlet flue department bending extension, the camber that lies in the guide plate of downside in two adjacent guide plates is greater than the guide plate camber that lies in the upside, space between two adjacent guide plates constitutes the passageway that supplies the flue gas circulation, the flue casing still is equipped with outward and is used for driving the adjustment mechanism of each guide plate swing with adjustment passageway aperture size.
Further, all be connected with the pivot that extends along the fore-and-aft direction on each guide plate, all there is driving pulley in the pivot, through belt transmission between two adjacent pivots, adjustment mechanism is including being used for driving one of them pivot pivoted driving motor and reduction gear.
Furthermore, the number of the guide plates is three, and the number of the transmission belt wheels positioned on the middle rotating shaft is two, and the transmission belt wheels are respectively in transmission connection with the two rotating shafts on the upper side and the lower side.
Furthermore, the diameters of the driving belt wheels on the rotating shafts are sequentially increased from bottom to top.
Further, the inside wall of the flue shell is provided with a protective cover, and each transmission belt wheel is arranged in the protective cover.
The utility model has the advantages as follows: compared with the prior art, the utility model relates to a pin guide plate structure is taken off to oscillating, in the use of reality, the camber design through the guide plate is different, and the form that a plurality of guide plates were arranged side by side, the flue gas distribution situation of optimization flue gas when passing through the corner that can step forward, the flue gas of guaranteeing to get into denitration catalyst layer distributes evenly on radial cross section, makes the reaction of each part of taking off the pin catalyst layer reach the equilibrium, and its structure is fairly simple, convenient to use moreover. In addition, through the design of adjusting the structure, can be according to the total amount and the flow size regulation passageway of flue gas, when the flow is great, passageway lower extreme opening reduces, increases the flue gas velocity of flow that gets into, and when the flow is great, with the opening increase of passageway lower extreme, the flue gas velocity of flow that gets into reduces and then can guarantee that the reaction of catalyst is complete.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described as follows:
FIG. 1 is a schematic structural view of a desulfurization absorption tower corresponding to a specific embodiment of a swing adjustment type pin removal guide plate structure of the present invention;
fig. 2 is a schematic cross-sectional view of the structure of the medium cotter baffle of fig. 1.
Description of reference numerals: 1-ammonia injection grid; 2-a catalyst layer for denitration; 3-flue housing; 4-a flow guide plate group; 5-a deflector; 6-a rotating shaft; 7-a reducer; 8-driving a motor; 9-a driving pulley; 10-protective cover.
Detailed Description
In order to make the technical purpose, technical solution and advantageous effects of the present invention clearer, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
The utility model relates to a swing regulation formula takes off concrete embodiment of round pin guide plate structure, as shown in fig. 1 and fig. 2, this take off the round pin guide plate structure and set up at ammonia injection grid 1 and take off between the round pin catalyst layer, concrete setting is in the top of ammonia injection grid 1 and denitration catalyst layer 2, and in order to realize the flue gas from upwards through ammonia injection grid 1 back, get into again from last to down and take off the round pin catalyst layer, in this embodiment, take off the round pin guide plate structure including connecting flue casing 3 between taking off round pin catalyst layer and ammonia injection grid 1 top, flue casing 3's lower extreme has into the mouth, it communicates with ammonia injection grid 1 to advance the mouth, the right-hand member has a mouth, go out the mouth and take off the round pin catalyst layer intercommunication. In this way, the flue gas can be reversed when passing through the flue housing 3.
The guide plate structure also comprises a guide plate group 4 arranged in the flue shell 3, the guide plate group 4 comprises three guide plates 5 which are arranged side by side at intervals, each guide plate 5 is arranged at intervals along the direction from the right lower part to the left upper part, and each guide plate 5 is an arc-shaped plate which is bent and extended from the smoke inlet to the smoke outlet, the curvature of the guide plate 5 positioned at the lower side of the two adjacent guide plates 5 is larger than that of the guide plate 5 positioned at the upper side, and a channel for smoke to flow is formed by the space between the two adjacent guide plates 5, because the camber of each guide plate 5 from bottom to top reduces gradually to be close to the left side region of taking off the round pin catalyst layer more when can realizing being close to the flue gas of corner and discharging, be close to the right side region of taking off the round pin catalyst layer more when keeping away from the flue gas of corner and discharging, thereby can realize that the flue gas lets in the even of taking off the round pin catalyst layer top. The size change of passageway can be realized in the swing of guide plate 5, and then the inflow flow and the velocity of flow of adjustment flue gas.
Besides, an adjusting mechanism for driving each guide plate 5 to swing so as to adjust the opening of the channel is arranged outside the flue shell 3. In this embodiment, each guide plate 5 is connected with a rotating shaft 6 extending in the front-rear direction, each rotating shaft 6 is provided with a driving belt wheel 9, two adjacent rotating shafts 6 are driven by a belt, and the adjusting mechanism comprises a driving motor 8 and a speed reducer 7 for driving one of the rotating shafts 6 to rotate. Drive reduction gear 7 through driving motor 8 and realize the variable speed regulation, and then drive corresponding pivot 6 and rotate, pivot 6 rotates and drives guide plate 5 swing, can adjust the passageway clearance between each guide plate 5. Of course, there are two driving belt wheels 9 on the middle rotating shaft 6, which are respectively connected with the two rotating shafts 6 on the upper and lower sides in a driving manner. Therefore, all the guide plates 5 can be driven to swing by only one driving motor 8, and the structure is simpler.
Preferably, the diameters of the driving belt wheels 9 on the rotating shafts 6 are increased from bottom to top in sequence. Set up like this, mainly be in order to adjust the swing range of each guide plate 5, according to the diameter and the drive ratio direct ratio of driving pulley 9, at the transmission in-process, the swing range that is located the guide plate 5 of downside is great, and the swing range that is located the guide plate 5 of upside is less to under the micro-wobbling prerequisite that can realize guide plate 5, the aperture of adjustment passageway as far as, the adjustment of the velocity of flow and the flow of realization flue gas.
In addition, in order to avoid the erosion of the flue gas to the driving pulley 9, in the present embodiment, a protective cover 10 is provided on the inner side wall of the flue case 3, and each driving pulley 9 is provided inside the protective cover 10.
In other embodiments, the rotating shafts 6 can be driven by meshing gears, and an intermediate gear is arranged between two adjacent rotating shafts 6 for adjustment, so that the two corresponding rotating shafts 6 rotate in the same direction.
In other embodiments, the driving mechanism may be provided as a manual adjustment structure, and the driving of the rotating shaft 6 is realized by an external rocker.
In other embodiments, two rotating shafts 6 may share one adjusting mechanism, and one rotating shaft 6 may use one adjusting mechanism, which is not limited specifically.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, and any equivalent replacement and modification or partial replacement which do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.
Claims (5)
1. Formula denitration guide plate structure is adjusted in swing, a serial communication port, including being used for connecting the flue casing at the corner of taking off round pin catalyst layer and ammonia injection grid top, the lower extreme of flue casing has into the mouth, the right-hand member has the outlet flue, guide plate structure is still including setting up the guide plate group in the flue casing, guide plate group is including the guide plate of at least three side by side interval arrangement, each guide plate is from the arc of inlet flue towards the outlet flue department extension of buckling, the camber that lies in the guide plate of downside in two adjacent guide plates is greater than the guide plate camber that lies in the upside, space between two adjacent guide plates constitutes the passageway that supplies the flue gas circulation, the flue casing still is equipped with outward and is used for driving the adjustment mechanism of each guide plate swing with adjustment passageway aperture.
2. The swing adjusting type denitration guide plate structure as claimed in claim 1, wherein each guide plate is connected with a rotating shaft extending in a front-rear direction, the rotating shafts are provided with driving pulleys, two adjacent rotating shafts are driven by a belt, and the adjusting mechanism comprises a driving motor and a speed reducer for driving one of the rotating shafts to rotate.
3. The structure of the swing adjusting type denitration baffle according to claim 2, wherein there are three baffles, and there are two driving pulleys on the middle rotating shaft, which are in driving connection with the two rotating shafts on the upper and lower sides.
4. The swing adjusting type denitration guide plate structure as claimed in claim 2 or 3, wherein the diameters of the driving pulleys on the respective rotating shafts are increased from bottom to top in sequence.
5. The swing adjusting type denitration guide plate structure as claimed in claim 2 or 3, wherein a protective cover is provided on the inner side wall of the flue shell, and each driving pulley is arranged in the protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559126.XU CN213193162U (en) | 2020-07-31 | 2020-07-31 | Swing adjustment formula denitration guide plate structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559126.XU CN213193162U (en) | 2020-07-31 | 2020-07-31 | Swing adjustment formula denitration guide plate structure |
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| CN213193162U true CN213193162U (en) | 2021-05-14 |
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| CN202021559126.XU Active CN213193162U (en) | 2020-07-31 | 2020-07-31 | Swing adjustment formula denitration guide plate structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457365A (en) * | 2021-05-21 | 2021-10-01 | 众智机械(临沂)有限公司 | But exhaust treatment device of quick conversion absorption and desorption |
| CN113606595A (en) * | 2021-08-04 | 2021-11-05 | 河北天龙环保科技有限公司 | Multi-valve-group heat storage high-temperature oxidation system |
| CN114251671A (en) * | 2021-12-15 | 2022-03-29 | 国家能源集团宝庆发电有限公司 | Adjustable flow guide device |
-
2020
- 2020-07-31 CN CN202021559126.XU patent/CN213193162U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457365A (en) * | 2021-05-21 | 2021-10-01 | 众智机械(临沂)有限公司 | But exhaust treatment device of quick conversion absorption and desorption |
| CN113606595A (en) * | 2021-08-04 | 2021-11-05 | 河北天龙环保科技有限公司 | Multi-valve-group heat storage high-temperature oxidation system |
| CN113606595B (en) * | 2021-08-04 | 2024-03-29 | 河北天龙环保科技有限公司 | Multi-valve-group heat-storage high-temperature oxidation system |
| CN114251671A (en) * | 2021-12-15 | 2022-03-29 | 国家能源集团宝庆发电有限公司 | Adjustable flow guide device |
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