CN220379706U - Ash discharging system for flue of thermal power plant - Google Patents
Ash discharging system for flue of thermal power plant Download PDFInfo
- Publication number
- CN220379706U CN220379706U CN202321490143.6U CN202321490143U CN220379706U CN 220379706 U CN220379706 U CN 220379706U CN 202321490143 U CN202321490143 U CN 202321490143U CN 220379706 U CN220379706 U CN 220379706U
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- Prior art keywords
- ash
- flue
- pipe
- power plant
- thermal power
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- 238000007599 discharging Methods 0.000 title claims abstract description 27
- 239000002893 slag Substances 0.000 claims abstract description 16
- 239000003500 flue dust Substances 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims description 24
- 238000003466 welding Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 239000002956 ash Substances 0.000 description 76
- 239000010881 fly ash Substances 0.000 description 7
- 239000003245 coal Substances 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Incineration Of Waste (AREA)
Abstract
The utility model provides a flue dust discharging system for a thermal power plant, which comprises: the first ash falling pipe, the second ash falling pipe and the slag discharging gate valve; the first end of the first ash dropping pipe is communicated with an ash dropping hole at the bottom of the flue, the second end of the first ash dropping pipe is communicated with the first end of a slag discharging gate valve, the second end of the slag discharging gate valve is communicated with the first end of the second ash dropping pipe, and the second end of the second ash dropping pipe is positioned close to the ground to discharge ash; according to the utility model, the square ash removal hole is not arranged any more, the circular ash removal pipe is externally connected with the circular ash removal hole in the flue, the construction is convenient, and the construction difficulty problem of installing the square ash removal hole is avoided especially for the circular flue.
Description
Technical Field
The utility model relates to the technical field of power engineering, in particular to a flue dust discharging system for a thermal power plant.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The coal is used as fuel in the thermal power plant, and because the coal contains ash, after the coal burns in the boiler, the fly ash is carried out of the boiler along with the flue gas and enters the flue behind the boiler, and part of the fly ash can be deposited in the flue. Flue dust is often very serious, especially for power plants that burn high ash coal species or for power plants that are often operated at low loads.
The bottom of the flue behind the power plant is generally provided with ash removal holes, and ash removal is carried out by utilizing the ash removal holes. But the ash removal hole of part high-order flue is high-order arranging, and once the ash removal hole flange lid is opened, the deposition will spout, all brings adverse effect to maintainer health and power plant environment. Therefore, for most power plants, the flue dust removal holes are basically in a abandoned state, and power plant overhaulers commonly practice to enter the flue through manholes near the dust removal holes, carry out dust accumulation bagging, have extremely large overhauling workload and are not beneficial to personnel health.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the flue ash discharging system for the thermal power plant, the square ash removing holes are not arranged any more, the circular ash discharging pipe is externally connected with the circular ash discharging hole instead of the circular ash discharging hole, the construction is convenient, and the construction difficulty problem of installing the square ash removing holes is avoided especially for the circular flue.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
an ash discharge system for a flue of a thermal power plant, comprising: the first ash falling pipe, the second ash falling pipe and the slag discharging gate valve;
the first end of the first ash dropping pipe is communicated with an ash dropping hole at the bottom of the flue, the second end of the first ash dropping pipe is communicated with the first end of the slag discharging gate valve, the second end of the slag discharging gate valve is communicated with the first end of the second ash dropping pipe, and the second end of the second ash dropping pipe is positioned close to the ground to discharge ash.
As a further limitation of the first aspect of the utility model, the dust hole is a circular dust hole formed at the bottom of the flue.
As a further limitation of the first aspect of the utility model, the dust falling holes are arranged at the positions of the original square dust removing holes of the flue.
As a further limitation of the first aspect of the utility model, the second drop tube is connected to a beam or column of the flue support by a drop tube support.
As a further limitation of the first aspect of the utility model, when there is no beam or column of the flue support in the vicinity of the second dust fall pipe, the second dust fall pipe comprises a first pipe section and a second pipe section which are communicated, the first pipe section is an inclined pipe, and the inclined pipe is connected with the beam or column of the flue support through the dust fall pipe support.
As a further limitation of the first aspect of the utility model, the angle of the chute should be greater than 60 °.
As a further limitation of the first aspect of the utility model, the second dust tube is fixedly connected to the beam or column of the flue support by welding the dust tube support.
As a further limitation of the first aspect of the utility model, the interior space of the first dust fall pipe is in communication with a source of compressed air via a service compressed air conduit.
As a further limitation of the first aspect of the utility model, the central axes of the first and second dust-falling pipes are perpendicular to the horizontal plane.
As a further limitation of the first aspect of the utility model, the first ash dropping pipe is fixedly connected with the flue by welding, and the slag discharging gate valve is fixedly connected with the first ash dropping pipe and the second ash dropping pipe by welding respectively.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model creatively provides a flue ash discharging system for a thermal power plant, which is free from arranging square ash removing holes, is changed into a flue with round holes and is externally connected with a round ash discharging pipe, is convenient to construct, and particularly for a round flue, the construction difficulty problem of installing the square ash removing holes is avoided.
2. The utility model creatively provides a flue ash discharging system for a thermal power plant, wherein the second ash discharging pipe can be led to 0m (or near the ground) by utilizing the column of the existing flue support, so that the additional pipeline fixed cost is not increased, the overhaul ash removing workload of the power plant is greatly reduced, and the operation meets the requirements of convenience, safety and neatness.
3) The utility model creatively provides a flue ash discharging system for a thermal power plant, which introduces loose wind from a nearby overhaul compressed air pipeline, can realize that when a valve is difficult to open, the valve is loosened and deposited ash is smoothly opened, and improves the convenience of operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic view of a flue dust removal hole structure;
FIG. 2 is a schematic view of ash removal holes in a high-level arrangement of a flue;
FIG. 3 is a schematic view of a dust collector and its flue;
FIG. 4 is a schematic diagram of a flue dust removal system for a thermal power plant provided by the utility model;
wherein, 1-a first ash falling pipe; 2-deslagging gate valve; 3-a second ash falling pipe; 4-a compressed air pipeline for overhauling; 5-ash falling pipe support.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1, in order to design a flue dust removal hole structure according to < D-LD2000 breeze pulverized coal pipe component typical design manual >, as shown in fig. 2, the flue dust removal hole is usually arranged at the bottom of the flue, and the dust removal hole has the following drawbacks:
(1) The ash removing holes are square holes, and for the round flue, square holes are formed in the round flue, so that a certain construction difficulty is increased;
(2) The ash removing hole is the lowest point, long-time ash accumulation can cause the jam of the flange cover of the ash removing hole and can not be opened;
(3) Most of the flue of the thermal power plant is arranged at a high position, as shown in fig. 3, the front flue of the dust remover with the largest ash content is usually arranged at a position of more than 20 meters, if ash removal is carried out through an ash removal hole, a large amount of ash can be sprayed when the flange cover is opened, and adverse effects are brought to the health of maintainers and the environment of a power plant.
In view of this, in order to guarantee that the unit overhauls, maintainer can be convenient carry out the ash removal operation, realizes maintenance convenience and security, the utility model provides a be used for thermal power factory flue to put grey system, no longer set up the flue ash removal hole in the handbook, open the round hole in ash removal hole department, specifically include: the device comprises a first ash falling pipe 1, a second ash falling pipe 3 and a slag discharging gate valve 2;
the first end of the first ash dropping pipe 1 is communicated with an ash dropping hole at the bottom of the flue, the second end of the first ash dropping pipe 1 is communicated with the first end of the slag discharging gate valve 2, the second end of the slag discharging gate valve 2 is communicated with the first end of the second ash dropping pipe 3, and the second end of the second ash dropping pipe 3 is positioned at a position (or a position of 0 meter) close to the ground so as to discharge ash.
In this embodiment, the dust hole is a circular dust hole formed in the bottom of the flue, and the dust hole is formed in the original square dust hole of the flue.
In this embodiment, preferably, the second ash falling pipe 3 is connected to the beam or column of the flue support through an ash falling pipe support, where there may be a plurality of ash falling pipe supports to ensure stability of the second ash falling pipe 3 and ensure that the second ash falling pipe 3 is vertically downward.
In this embodiment, the central axes of the first ash dropping pipe 1 and the second ash dropping pipe 3 are perpendicular to the horizontal plane, i.e. are vertically downward arranged, so that free falling of ash is facilitated.
It will be appreciated that in some other implementations, where there is no beam or column of the flue support in the vicinity of the second drop tube 3, the second drop tube 3 comprises a first tube section and a second tube section in communication, the first tube section being an inclined tube, the inclined tube being connected to the beam or column of the flue support by the drop tube support, the angle of the inclined tube being greater than 60 ° (the angle to the level ground) to ensure smooth drop.
In this embodiment, the beam or column of the second ash falling pipe 3 and the flue support are fixedly connected through the ash falling pipe support, the first ash falling pipe is fixedly connected with the flue through welding, and the slag discharging gate valve is fixedly connected with the first ash falling pipe and the second ash falling pipe through welding respectively.
It can be appreciated that in other implementations, the slag discharge gate valve 2 and the first ash falling pipe 1 and the second ash falling pipe 3 are fixed by flanges respectively, and a person skilled in the art can select a fixing manner according to a specific working condition, which is not described herein.
In this embodiment, for preventing long-term operation deposition leads to valve jam to be difficult to open, the inner space of first ash falling pipe 1 is through overhaul with compressed air pipeline 4 and compressed air source intercommunication, and 1 sets up one way of not hard up wind at vertical first ash falling pipe, draws forth from power plant overhaul with compressed air pipeline nearby, and when the valve was difficult to open, open and send the wind valve, it is not hard up with the deposition of valve top, opens the valve.
In the utility model, the overhaul platforms are arranged near the original dust removing holes, and the valve is arranged right below the dust removing holes, so that the operation is convenient; the system has simple integral structure, and is suitable for not only newly-built power plants, but also transformation of active power plants.
According to the utility model, a square ash removal hole is not arranged any more, a circular ash discharge pipe is externally connected with a circular hole formed in a flue, construction is convenient, and the construction difficulty problem of installing the square ash removal hole is avoided especially for a circular flue; the second ash dropping pipe 3 can be led to 0m by using the column of the existing flue support without adding extra pipeline fixed cost; the loosening air is introduced from a nearby overhaul compressed air pipeline, so that when the valve is difficult to open, the dust is loosened and the valve is smoothly opened; the system has simple overall design, can directly send the deposition in the flue to 0m through the ash dropping pipe, greatly reduces the work load of overhauling and ash cleaning of the power plant, and is convenient, safe and neat.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A flue dust removal system for a thermal power plant, comprising: the first ash falling pipe, the second ash falling pipe and the slag discharging gate valve;
the first end of the first ash dropping pipe is communicated with an ash dropping hole at the bottom of the flue, the second end of the first ash dropping pipe is communicated with the first end of the slag discharging gate valve, the second end of the slag discharging gate valve is communicated with the first end of the second ash dropping pipe, and the second end of the second ash dropping pipe is positioned close to the ground to discharge ash.
2. The ash discharge system for a flue of a thermal power plant according to claim 1, wherein the ash discharge holes are circular ash discharge holes formed in the bottom of the flue.
3. The ash discharge system for a flue of a thermal power plant according to claim 1 or 2, wherein the ash falling holes are formed in the positions of the original square ash removing holes of the flue.
4. The ash discharge system for a flue of a thermal power plant according to claim 1, wherein the second ash drop tube is connected to a beam or column of the flue support by an ash drop tube support.
5. The ash discharge system for a flue of a thermal power plant according to claim 4, wherein when the second ash discharge pipe is adjacent to the beam or column without a flue support, the second ash discharge pipe comprises a first pipe section and a second pipe section which are communicated, the first pipe section is an inclined pipe, and the inclined pipe is connected with the beam or column of the flue support through the ash discharge pipe support.
6. The ash discharge system for a flue of a thermal power plant according to claim 5 wherein the angle of the inclined tube is greater than 60 °.
7. The flue dust discharge system for a thermal power plant according to any one of claims 4 to 6, wherein the second dust fall pipe is fixedly connected with a beam or column of the flue support by welding through the dust fall pipe support.
8. The ash discharge system for a flue of a thermal power plant according to claim 1, wherein the inner space of the first ash falling pipe is communicated with the compressed air source through a compressed air pipe for maintenance.
9. The ash discharge system for a flue of a thermal power plant of claim 1, wherein the central axes of the first ash drop tube and the second ash drop tube are perpendicular to a horizontal plane.
10. The ash discharge system for a flue of a thermal power plant according to claim 1, wherein the first ash drop pipe is fixedly connected with the flue by welding, and the slag discharge gate valve is fixedly connected with the first ash drop pipe and the second ash drop pipe by welding respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321490143.6U CN220379706U (en) | 2023-06-12 | 2023-06-12 | Ash discharging system for flue of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321490143.6U CN220379706U (en) | 2023-06-12 | 2023-06-12 | Ash discharging system for flue of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220379706U true CN220379706U (en) | 2024-01-23 |
Family
ID=89563421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321490143.6U Active CN220379706U (en) | 2023-06-12 | 2023-06-12 | Ash discharging system for flue of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220379706U (en) |
-
2023
- 2023-06-12 CN CN202321490143.6U patent/CN220379706U/en active Active
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