CN218741279U - SCR denitration ammonia injection grid supporting quick overhaul - Google Patents
SCR denitration ammonia injection grid supporting quick overhaul Download PDFInfo
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- CN218741279U CN218741279U CN202223024542.1U CN202223024542U CN218741279U CN 218741279 U CN218741279 U CN 218741279U CN 202223024542 U CN202223024542 U CN 202223024542U CN 218741279 U CN218741279 U CN 218741279U
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Abstract
The utility model discloses a support SCR denitration ammonia injection grid of quick maintenance, include: the main pipe is provided with an air inlet on the cylindrical surface, access holes are formed in two ends of the main pipe, a first detachable flange is arranged on each access hole and comprises a first flange seat and a first flange cover plate, and the first flange cover plate is fixedly arranged on the first flange seat through bolts to seal the access holes; the branch pipes are provided with a plurality of groups and are connected to the cylindrical surface of the main pipe together; the end of each multi-component pipe, which is far away from the main pipe, is provided with a seal head, and the cylindrical surfaces of the multi-component pipes are provided with a plurality of air outlet holes; the gas to be treated is input through the gas inlet and is discharged through the gas outlet, a large amount of smoke dust is contained in the gas to be treated, the gas to be treated works for a long time, the smoke dust is accumulated in the gas outlet to cause the phenomenon of blockage, the main pipe and the multi-component pipe can be inspected, dredged or cleaned only by dismounting the pressing plate, the welding after cutting and cleaning is not needed, and the required time for maintenance is greatly shortened.
Description
Technical Field
The utility model relates to a SCR spouts ammonia grid technical field, especially relates to a support quick overhaul's SCR denitration spouts ammonia grid.
Background
In the SCR denitration technology at present, the gas to be treated sequentially passes through the equipment as follows: the process comprises the steps of a draught fan → a flue gas heat exchanger → a flue gas heater → a denitration ammonia injection grid device → an SCR reactor → GGH → a booster fan → a chimney, wherein the heating mode commonly adopted in the process is flue gas heating, although the steam consumption is greatly optimized, the mixture of dust and ammonia gas contained in the flue gas is further agglomerated and stacked after the flue gas is used for a long time, wherein the blockage of the ammonia injection grid device is obvious, and the ammonia gas cannot be fully sprayed out, so that the denitration efficiency is reduced, the service life of a catalyst is prolonged, and the generation of adverse influence of ammonia escape is improved;
aiming at the situation, technicians need to overhaul and clean the denitration ammonia injection grid device after using the denitration ammonia injection grid device for a period of time, so that the blocking condition is avoided; and denitration ammonia injection grid device generally includes the sealed person in charge in both ends, and the welding is in being responsible for the multiunit branch pipe of cylinder, the person in charge is seted up to the air inlet, and a plurality of gas outlets are then seted up on the cylinder of branch pipe, in above-mentioned structure, overhaul the cleaning process then need dismantle the branch pipe cutting, carry out the deashing again, still need weld after the deashing and recover, it is complicated and be unfavorable for overhauing to dismantle, therefore, there should be a denitration ammonia injection grid that the structure is more reasonable, the unable quick overhaul abluent problem of the device of solving the aforesaid appearance.
SUMMERY OF THE UTILITY MODEL
In having current SCR denitration technology among the above-mentioned technique, the abluent problem just can be overhauld to the denitration ammonia injection grid device that adopts needs the cutting dismantlement, the utility model provides a new solution.
In order to achieve the above object, the utility model provides a support quick maintenance's SCR denitration ammonia injection grid, include:
the main pipe is provided with an air inlet on the cylindrical surface, access holes are formed in two ends of the main pipe, a first detachable flange is arranged on each access hole and comprises a first flange seat and a first flange cover plate, and the first flange cover plate is fixedly arranged on the first flange seat through bolts to seal the access holes;
the branch pipes are provided with a plurality of groups and are connected to the cylindrical surface of the main pipe together; the multiunit the branch pipe is kept away from the one end of being responsible for all is equipped with the head, and all is equipped with a plurality of ventholes on the cylinder.
As an improvement of the utility model, the cylinder of being responsible for is equipped with and feeds through in the access panel of lumen and set up on the access panel can dismantle the flange by the second, the flange can be dismantled to the second includes second flange seat and second flange apron, the second flange apron passes through the bolt erection and fixes it is right on the second flange seat the access panel constitutes sealedly.
As an improvement of the utility model, the maintenance window is positioned at one side of the main pipe column surface opposite to the branch pipe; the cover plate is connected with the access window through a fixing bolt.
As an improvement of the utility model, the sideline of the access panel is rectangular.
As an improvement of the utility model, the first flange cover plate with between the first flange seat the second flange cover plate with all be equipped with the gasket between the second flange seat.
The beneficial effects of the utility model are that: compared with the prior art, the utility model provides a pair of support quick maintenance's SCR denitration ammonia injection grid, include: the first detachable flange comprises a first flange seat and a first flange cover plate, and the first flange cover plate is fixedly arranged on the first flange seat through bolts to seal the access hole; the branch pipes are provided with a plurality of groups and are connected to the cylindrical surface of the main pipe together; the end of each multi-component pipe far away from the main pipe is provided with a seal head, and the cylindrical surface is provided with a plurality of air outlet holes; the gas to be treated is input through the gas inlet and is discharged through the gas outlet, and when the gas is required to be overhauled, the main pipe and the multi-component pipe can be inspected, dredged or cleaned only by detaching the first flange cover plate, so that the time required for overhauling is greatly shortened.
Drawings
FIG. 1 is a grid diagram of the denitration ammonia injection grid of the present invention;
fig. 2 is an enlarged view of the area a of fig. 1 according to the present invention;
fig. 3 is an enlarged view of the area B of fig. 1 according to the present invention.
The main component symbols are as follows:
1. a main pipe; 11. an air inlet; 12. an access hole; 13. an access panel; 2. pipe distribution; 21. an air outlet;
3. a first flange cover plate; 4. a second flange cover plate; 5. and (5) fixing the bolt.
Detailed Description
In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.
In the following description, general example details are given to provide a more thorough understanding of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
In the SCR denitration technology at present, the gas to be treated sequentially passes through the equipment as follows: the process comprises the steps of induced draft fan → flue gas heat exchanger → flue gas heater → denitration ammonia injection grid device → SCR reactor → GGH → booster fan → chimney, wherein the heating mode commonly adopted in the process is flue gas heating, although the steam consumption is greatly optimized, the phenomenon of caking and accumulation of the mixture of dust and ammonia gas contained in the flue gas is caused after long-time use, wherein the blockage of the ammonia injection grid device is obvious, and the ammonia gas cannot be fully sprayed out, so that the denitration efficiency is reduced, the service life of the catalyst is prolonged, and the generation of harmful influence of ammonia escape is improved;
aiming at the situations, technicians overhaul and clean the denitration ammonia injection grid device after using the denitration ammonia injection grid device for a period of time, so that the blockage situation is avoided; and the ammonia injection grid device generally includes that both ends are sealed be responsible for, and the welding is in the multiunit branch pipe of being responsible for the cylinder, the air inlet is seted up in being responsible for, and a plurality of gas outlets are then seted up on the cylinder of branch pipe, in above-mentioned structure, overhaul the cleaning process then need dismantle the branch pipe cutting, carry out the deashing again, still need weld after the deashing and recover, it is complicated to dismantle to be unfavorable for overhauing the washing, consequently, should have a more reasonable denitration ammonia injection grid of structure, and then solve the above-mentioned problem that appears and be unfavorable for quick abluent.
In order to solve the technical problem that appears above, the utility model provides a support quick maintenance's SCR denitration ammonia injection grid, please refer to fig. 1 to 3, include:
the flange comprises a main pipe 1 and a first detachable flange, wherein the first detachable flange comprises a first flange seat and a first flange cover plate 3, and the first flange cover plate 3 is fixedly arranged on the first flange seat through bolts to seal an access hole;
the branch pipes 2 are provided with a plurality of groups and are connected to the cylindrical surface of the main pipe 1 together; the end of the multi-component pipe 2 far away from the main pipe 1 is provided with a seal head, and the cylindrical surface is provided with a plurality of air outlet orifices 21;
it can be understood that the gas to be treated is input through the gas inlet 11 and is discharged through the gas outlet 21, and as the gas to be treated has a large amount of smoke dust, the smoke dust is accumulated for a long time to cause the gas outlet 21 to be blocked, and further needs to be overhauled after being used for a period of time, when the overhaul is needed, the main pipe 1 and the multi-component pipe can be inspected, dredged or cleaned only by dismounting the pressing plate 3, compared with the existing method of cutting the branch pipe, the blockage part is inspected, dredged or cleaned; and because in the consideration to environmental pollution, denitration ammonia injection grid is difficult to long-time withdraw from, and the position of installing can appear inflammable and explosive potential safety hazard again, the cutting then needs the heating of firing in order to soften the cutting region, consequently, personnel's safety when overhauing smoothly, generally need the blowing out just can accomplish, and in this application through ingenious seting up the access hole and introducing first flange apron as sealed, make the required time of overhaul many reduce, improved the operation security performance.
In order to enable the first flange cover plate 3 and the access hole 12 to be more convenient to assemble and disassemble, the access hole 12 and the first flange cover plate 3 are connected through a fixing bolt 5; when in actual use, the technician only needs to loosen fixing bolt 5, can make first blind flange 3 and access hole 12 contact lid state to expose the lumen of being responsible for 1, can wash the lumen and be in charge.
In the embodiment, in order to increase the maintenance speed, the cylindrical surface of the main pipe 1 is provided with an maintenance window 13 communicated with the pipe cavity and a second flange cover plate 4 which can be detachably covered on the maintenance window; as can be understood, the access panel 13 and the access opening 12 are arranged in different directions, so that technicians can conveniently perform access and cleaning from multiple angles;
in order to further increase the maintenance rate, the cylindrical surface of the main pipe is provided with a maintenance window 13 communicated with the pipe cavity, and a second detachable flange is arranged on the maintenance window 3 and comprises a second flange seat and a second flange cover plate 4, and the second flange cover plate 4 is fixedly arranged on the second flange seat through bolts to seal the maintenance window; it can be understood that a technician can release the covering state of the cover plate 5 and the access window 13 only by loosening the fixing bolt 5 to expose the tube cavity of the main tube, and the access window 23 is positioned on the opposite side of the branch tube, so that the technician can further conveniently overhaul and clean the communication tail end of the branch tube;
in order to further increase the maintenance rate, the side line of the maintenance window 13 is rectangular; because the branch pipes are arranged and connected on the cylindrical surface of the main pipe 1, the inspection window 13 is rectangular and is more suitable for practical application, the main pipe with the length of 2m and the diameter of 0.5m is used as an example, the specification of the inspection window is that the length is 60cm, the width is 15cm, the height is longer, the blocking condition of the branch pipes can be known to the maximum extent, and technicians only need to pass through tools such as a solution for cleaning reagents, a brush and the like, and the main pipe and the branch pipes can be cleaned.
In the embodiment, in order to enhance the sealing performance, gaskets are respectively arranged between the second flange cover plate 4 and the second flange seat, and between the first flange cover plate 3 and the second flange seat; it will be appreciated that the gasket may provide a certain amount of cushioning, so that the sealing between the first flange seat and the first flange cover plate 3 and between the second flange seat and the second flange cover plate 4 may be maintained, and no gas leakage may occur.
The utility model has the advantages that:
1) The gas to be treated is input through the gas inlet and is discharged through the gas outlet, when the maintenance is needed, the inspection, dredging or cleaning of the main pipe and the multi-component pipes can be realized only by dismounting the pressing plate, compared with the existing method of cutting the component pipes, the inspection, dredging or cleaning of the blocked part is performed;
2) The gasket can provide certain cushioning for between access panel and the apron, the leakproofness that can between access hole and the clamp plate can keep, the condition that gas leaked can not appear.
The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a support SCR denitration ammonia injection grid of quick maintenance which characterized in that includes:
the main pipe is provided with an air inlet on the cylindrical surface, access holes are formed in two ends of the main pipe, a first detachable flange is arranged on each access hole and comprises a first flange seat and a first flange cover plate, and the first flange cover plate is fixedly arranged on the first flange seat through bolts to seal the access holes;
the branch pipes are provided with a plurality of groups and are connected to the cylindrical surface of the main pipe together; the multiunit the branch pipe is kept away from the one end of being responsible for all is equipped with the head, and all is equipped with a plurality of ventholes on the cylinder.
2. The SCR denitration ammonia injection grid supporting rapid maintenance of claim 1, wherein the cylindrical surface of the main pipe is provided with a maintenance window communicated with the pipe cavity, and a second detachable flange is arranged on the maintenance window, the second detachable flange comprises a second flange seat and a second flange cover plate, and the second flange cover plate is fixedly installed on the second flange seat through bolts to seal the maintenance window.
3. The SCR denitration ammonia injection grid supporting rapid maintenance of claim 2, wherein the maintenance window is positioned on one side of the main pipe cylindrical surface opposite to the branch pipe; the cover plate is connected with the access window through a fixing bolt.
4. The SCR denitration ammonia injection grid supporting rapid maintenance of claim 3, wherein the side line of the maintenance window is formed in a rectangular shape.
5. The SCR denitration ammonia injection grid supporting rapid maintenance of claim 3, wherein a gasket is arranged between the first flange cover plate and the first flange seat and between the second flange cover plate and the second flange seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223024542.1U CN218741279U (en) | 2022-11-14 | 2022-11-14 | SCR denitration ammonia injection grid supporting quick overhaul |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223024542.1U CN218741279U (en) | 2022-11-14 | 2022-11-14 | SCR denitration ammonia injection grid supporting quick overhaul |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218741279U true CN218741279U (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223024542.1U Active CN218741279U (en) | 2022-11-14 | 2022-11-14 | SCR denitration ammonia injection grid supporting quick overhaul |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218741279U (en) |
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2022
- 2022-11-14 CN CN202223024542.1U patent/CN218741279U/en active Active
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