CN215962905U - Be used for last cover that flow equalizes of admitting air of denitration reactor - Google Patents
Be used for last cover that flow equalizes of admitting air of denitration reactor Download PDFInfo
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- CN215962905U CN215962905U CN202121960079.4U CN202121960079U CN215962905U CN 215962905 U CN215962905 U CN 215962905U CN 202121960079 U CN202121960079 U CN 202121960079U CN 215962905 U CN215962905 U CN 215962905U
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Abstract
The utility model discloses an upper gas flow equalizing cover for a denitration reactor, which comprises a shell, and a plurality of layers of forward flow guide plate groups and a plurality of layers of reverse flow guide plate groups which are arranged in the shell; the shell is of a trapezoidal structure and is arranged on the denitration reactor; the multilayer positive guide plate groups are symmetrically arranged along the central axis of the shell; the reverse guide plate groups are positioned below the multiple layers of forward guide plates and are symmetrically arranged along the central axis of the shell; the multiple layers of the forward flow guide plate groups and the multiple layers of the reverse flow guide plate groups are vertically arranged in the shell. According to the utility model, the multilayer guide plate groups are arranged, each guide plate group guides flow in a single direction, so that turbulence and vortex are avoided, uniform distribution of a flow field in the reactor and inflow angle of airflow are ensured, the plurality of guide blades are arranged in the single-layer guide plate group, the guide blades are arranged at intervals, and the distance between the guide blades is adjustable, so that the use amount of steel of the guide plate is effectively controlled, and the economy of the guide plate group meeting the use effect of the reactor is improved.
Description
Technical Field
The utility model relates to the technical field of flow equalizing covers, in particular to an air inlet flow equalizing cover for a denitration reactor.
Background
The import of conventional denitration reactor is horizontal import, and import flue length direction is the same with reactor length direction, so length direction generally need not flow equalize, only needs to guarantee that the air current is even and the inflow angle and the vertical direction of air current are about 0 on the reactor width direction, therefore the guide plate only adds on reactor import width direction, and the form of adding is also comparatively simple.
At present, few denitration reactors in the form of upper inlets are used in the industry, the upper inlets are in a rectangular structure, namely, the length and width of inlet flues are different from the length and width of the reactors, so that the gas flow can be kept uniform in the length and width directions of the reactors and the angle between the inflow direction of the gas flow and the vertical direction of the gas flow is less than 15 degrees after the flue gas enters from the upper inlets.
The existing upper air inlet denitration reactor is provided with a flow guide structure, the flow guide structure guides flow in two directions on a layer of plane, and the flow guide structure easily causes turbulence of air flow to form vortex flow, so that the uniformity of the air flow is influenced. The diversion form can not meet the requirement of uniform distribution of the airflow of the reactor under most project working conditions, and the inflow angle of the airflow after vortex is difficult to control. If the dust concentration in the flue gas increases, the catalyst in the denitration reactor is blocked and abraded.
SUMMERY OF THE UTILITY MODEL
In view of the above, the main object of the present invention is to provide an air flow equalizing cover for use in a denitration reactor.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
the embodiment of the utility model provides an upper gas flow equalizing cover for a denitration reactor, which comprises a shell, and a plurality of layers of forward flow guide plate groups and a plurality of layers of reverse flow guide plate groups which are arranged in the shell;
the shell is of a trapezoidal structure and is arranged on the denitration reactor;
the plurality of layers of the positive guide plate groups are symmetrically arranged along the central axis of the shell;
the multilayer reverse guide plate groups are positioned below the multilayer forward guide plates and are symmetrically arranged along the central axis of the shell;
the multiple layers of the forward flow guide plate groups and the multiple layers of the reverse flow guide plate groups are vertically arranged in the shell, so that the passing air flow is kept uniform, and the angle between the inflow direction of the air flow and the vertical direction is smaller than 15 degrees.
According to the utility model, the multilayer forward guide plate group comprises a support beam and a plurality of forward guide vanes, and the forward guide vanes are arranged on the support beam through an adjusting assembly.
Preferably, the multilayer reverse guide vane group comprises a support beam and a plurality of reverse guide vanes, and the reverse guide vanes are arranged on the support beam through an adjusting assembly.
Preferably, the adjusting assembly comprises a threaded cylinder, a screw and a sliding groove arranged on the supporting beam, the plurality of forward guide vanes or the plurality of reverse guide vanes are provided with the threaded cylinder, and the threaded cylinder is fixed by the screw after being slidably arranged in the sliding groove.
Preferably, the distance between the first layer of positive guide plate groups and the upper air inlet of the shell is 500 mm-one third of the height of the shell, the distance between the multiple layers of positive guide plate groups is less than 1000mm, the inclination angle of positive guide vanes in the positive guide plate groups is less than or equal to 45 degrees, and the positive guide vanes are symmetrically arranged on the central line of the upper air inlet.
Preferably, the distance between the reverse guide plate group on the first layer and the forward guide plate group on the lowest layer is less than 1000mm, the distance between the reverse guide plate groups on the multiple layers is less than 1000mm, the inclination angle of the reverse guide vanes in the reverse guide plate groups is less than or equal to 45 degrees, and the air inlets are symmetrically arranged on the central line.
Preferably, the pitch of the plurality of forward guide vanes or the plurality of reverse guide vanes is 300mm to 1000 mm.
Preferably, the length of the forward guide vane or the reverse guide vane is more than or equal to 500mm and less than or equal to 2000mm, and the width of the forward guide vane or the reverse guide vane is more than or equal to 300mm and less than or equal to 1000 mm.
Compared with the prior art, the multi-layer guide plate set is arranged, each layer of guide plate set conducts flow in a single direction, turbulence and vortex are avoided, uniform distribution of a flow field in the reactor and inflow angle of air flow are guaranteed, the guide blades are arranged in the single-layer guide plate set at intervals, and the distance between the guide blades is adjustable, so that the use amount of guide plate steel is effectively controlled, and the economical efficiency of the guide plate set meeting the use effect of the reactor is improved.
Drawings
FIG. 1 is a schematic perspective view of an inlet flow equalizing cover for a denitration reactor according to an embodiment of the present invention;
FIG. 2 is a left side view of an inlet flow equalizing cover for a denitration reactor according to an embodiment of the present invention;
FIG. 3 is a right side view of an inlet flow equalizing cover for a denitration reactor according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a forward baffle according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a reverse flow guide plate according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a support beam according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an adjusting assembly according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1 to 7, an embodiment of the present invention provides an upper gas flow equalizing cover for a denitration reactor, including a casing 3, and a plurality of forward flow deflectors 1 and a plurality of reverse flow deflectors 2 disposed in the casing 3;
the shell 3 is of a trapezoidal structure and is arranged on the denitration reactor;
the multilayer positive guide plate groups 1 are symmetrically arranged along the central axis of the shell 3;
the multilayer reverse guide plate set 2 is positioned below the multilayer forward guide plate set 1 and is symmetrically arranged along the central axis of the shell 3;
the multilayer forward guide plate group 1 and the multilayer reverse guide plate group 2 are vertically arranged in the shell 3, so that the passing air flow is kept uniform, and the angle between the inflow direction of the air flow and the vertical direction is smaller than 15 degrees.
As shown in fig. 1, 2 and 4, the multi-layer forward guide plate set includes a support beam 12 and a plurality of forward guide vanes 11, and the forward guide vanes 11 are disposed on the support beam 12 through an adjusting assembly.
As shown in fig. 1, 3 and 4, the multi-layer reverse guide vane group comprises a support beam 12 and a plurality of reverse guide vanes 21, and the plurality of reverse guide vanes 21 are arranged on the support beam 12 through an adjusting assembly.
As shown in fig. 6 and 7, the adjusting assembly includes a threaded cylinder 13, a screw 14 and a sliding slot 15 disposed on the support beam 12, the threaded cylinder 13 is disposed on each of the forward guide vanes 11 or the reverse guide vanes 21, and the threaded cylinder 13 is slidably disposed in the sliding slot 15 and then fixed by the screw 14.
As shown in the figures 2 and 3, the distance m between the first layer of the positive guide plate group 1 and the upper air inlet 4 of the shell 3 is 500 mm-one third of the height of the shell, the distance between the multiple layers of the positive guide plate groups 1 is less than 1000mm, the inclination angle alpha of the positive guide vanes 11 in the positive guide plate group 1 is less than or equal to 45 degrees, and the positive air inlet 4 is symmetrically arranged along the central line.
As shown in fig. 2 and fig. 3, the distance n between the first layer of reverse guide plate set 2 and the lowest layer and the forward guide plate set 1 is less than 1000mm, the distance between the multiple layers of reverse guide plate sets 2 is less than 1000mm, the inclination angle beta of the reverse guide vanes 21 in the reverse guide plate sets 2 is less than or equal to 45 degrees, and the upper air inlet 4 is installed in a central line symmetry manner.
As shown in fig. 2 and 3, the pitch t of the plurality of forward guide vanes 11 or the plurality of reverse guide vanes 21 is 300mm to 1000 mm.
As shown in fig. 2 and fig. 3, the length s of the forward guide vane 11 or the reverse guide vane 21 is more than or equal to 500mm and less than or equal to 2000mm, and the width r is more than or equal to 300mm and less than or equal to 1000 mm.
The working principle of the utility model is as follows:
as shown in fig. 1-7, the flow guide plate set is added in the upper air inlet 4 to fully diffuse and uniformly distribute the flue gas in the air inlet, and the flow guide vanes included in the flow guide plate set can more easily control the inflow angle of the flue gas into the reactor, so that the angle between the inflow direction and the vertical direction is less than 15 °. The guide vanes are arranged at intervals, so that the function of screening air flow can be better achieved, the use amount of guide plate steel can be effectively controlled, and the economy of the whole guide plate group is improved.
As shown in fig. 1-7, the distance n between the first layer reverse guide plate group 2 and the lowest layer and the forward guide plate group 1 is less than 1000mm, and the distance can well utilize the primary flow equalizing effect of the forward guide plate group to perform secondary flow equalization.
As shown in fig. 1-7, the guide vanes in the forward guide plate set 1 and the reverse guide plate set 2 need to be aligned up and down, so that the airflow can precisely comb and guide the flue gas.
The distance t between the plurality of forward guide vanes 11 or the plurality of reverse guide vanes 21 is 300mm-1000mm, so that the partial guide of the airflow changes the direction, and the partial guide of the airflow keeps the original flowing direction, thereby playing the role of carding the airflow.
When the flue gas entered from last inlet port 4 inlet end, at first tentatively combed the water conservancy diversion through positive guide plate group 1, because guide plate group comprises multiunit guide vane, this structure can reduce the resistance loss, can control water conservancy diversion and air current angle better in addition. The flue gas guided from the flow equalizing blades of the forward guide vanes 11 in the forward guide vane group 1 enters the gaps of the reverse guide vanes 21 in the reverse guide vane group 2; the flue gas flowing out from the gaps of the forward guide vanes 11 in the forward guide vane group 1 enters the reverse guide vanes 21 in the reverse guide vane group 2 for guide. Whole flue gas flows through reverse guide plate group 2, and whole process embodies the accurate effect of combing the water conservancy diversion flue gas, finally forms and flow equalizes and correct the flue gas flow direction, and this water conservancy diversion arrangement structure can be fine satisfy the equipartition and the flue gas flow angle requirement of air inlet form to the flue gas on the denitration reactor.
In summary, the multi-layer guide plate groups are arranged, each guide plate group guides flow in a single direction, turbulence and vortex are avoided, uniform distribution of a flow field in the reactor and inflow angle of air flow are guaranteed, the guide blades are arranged in the single-layer guide plate group at intervals, and the distance between the guide blades is adjustable, so that the use amount of guide plate steel is effectively controlled, and the economical efficiency of the guide plate group meeting the use effect of the reactor is improved.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, the terms describing the positional relationships in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. The upper gas flow equalizing cover for the denitration reactor is characterized by comprising a shell, and a plurality of layers of forward flow guide plate groups and a plurality of layers of reverse flow guide plate groups which are arranged in the shell;
the shell is of a trapezoidal structure and is arranged on the denitration reactor;
the plurality of layers of the positive guide plate groups are symmetrically arranged along the central axis of the shell;
the multilayer reverse guide plate groups are positioned below the multilayer forward guide plates and are symmetrically arranged along the central axis of the shell;
the multiple layers of the forward flow guide plate groups and the multiple layers of the reverse flow guide plate groups are vertically arranged in the shell, so that the passing air flow is kept uniform, and the angle between the inflow direction of the air flow and the vertical direction is smaller than 15 degrees.
2. The gas flow equalizing cover for the denitration reactor of claim 1, wherein the plurality of forward guide plate groups comprise a support beam and a plurality of forward guide vanes, and the plurality of forward guide vanes are arranged on the support beam through an adjusting assembly.
3. The gas flow equalizing cover for the denitration reactor of claim 1, wherein the plurality of reverse guide vane groups comprise a support beam and a plurality of reverse guide vanes, and the plurality of reverse guide vanes are arranged on the support beam through an adjusting assembly.
4. The upper gas flow equalizing cover for the denitration reactor of claim 2 or 3, wherein the adjusting assembly comprises a threaded cylinder, a screw and a chute arranged on the supporting beam, the plurality of forward guide vanes or the plurality of reverse guide vanes are provided with the threaded cylinder, and the threaded cylinder is fixed by the screw after being slidably arranged in the chute.
5. The upper gas flow equalizing cover for the denitration reactor as claimed in claim 4, wherein the distance between the first layer of the forward guide plate groups and the upper gas inlet of the shell is 500 mm-three times the height of the shell, the distance between the multiple layers of the forward guide plate groups is less than 1000mm, the inclination angle of the forward guide vanes in the forward guide plate groups is less than or equal to 45 degrees, and the forward guide vanes are symmetrically arranged on the central line of the upper gas inlet.
6. The inlet air flow equalizing cover for the denitration reactor as set forth in claim 5, wherein the distance between the first layer of reverse guide plate groups and the lowest layer of forward guide plate groups is less than 1000mm, the distance between the multiple layers of reverse guide plate groups is less than 1000mm, the inclination angle of the reverse guide vanes in the reverse guide plate groups is less than or equal to 45 degrees, and the inlet air flow equalizing cover is symmetrically arranged along the central line of the inlet air.
7. The gas flow equalizing cover for the denitration reactor as set forth in claim 6, wherein the pitch of the forward guide vanes or the reverse guide vanes is 300mm-1000 mm.
8. The gas flow equalizing hood for denitration reactor as set forth in claim 7, wherein the length of the forward guide vanes or the reverse guide vanes is 500 mm-2000 mm and the width thereof is 300mm-1000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121960079.4U CN215962905U (en) | 2021-08-19 | 2021-08-19 | Be used for last cover that flow equalizes of admitting air of denitration reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121960079.4U CN215962905U (en) | 2021-08-19 | 2021-08-19 | Be used for last cover that flow equalizes of admitting air of denitration reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215962905U true CN215962905U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121960079.4U Active CN215962905U (en) | 2021-08-19 | 2021-08-19 | Be used for last cover that flow equalizes of admitting air of denitration reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215962905U (en) |
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2021
- 2021-08-19 CN CN202121960079.4U patent/CN215962905U/en active Active
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Address after: 710075 7th floor, block B, Huajing Plaza, 20 Fenghui South Road, Yanta District, Xi'an City, Shaanxi Province Patentee after: Xi'an Longjing Environmental Protection Technology Co.,Ltd. Address before: 710075 7th floor, block B, Huajing Plaza, 20 Fenghui South Road, Yanta District, Xi'an City, Shaanxi Province Patentee before: XI'AN XIKUANG ENVIRONMENTAL PROTECTION Co.,Ltd. |