CN218890832U - Concentration ratio adjustable coal powder concentration and dilution separator - Google Patents
Concentration ratio adjustable coal powder concentration and dilution separator Download PDFInfo
- Publication number
- CN218890832U CN218890832U CN202222617138.9U CN202222617138U CN218890832U CN 218890832 U CN218890832 U CN 218890832U CN 202222617138 U CN202222617138 U CN 202222617138U CN 218890832 U CN218890832 U CN 218890832U
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- Prior art keywords
- separator
- concentration
- pipeline
- elbow
- wear
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- Expired - Fee Related
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- 239000003245 coal Substances 0.000 title claims abstract description 64
- 239000000843 powder Substances 0.000 title claims description 20
- 238000010790 dilution Methods 0.000 title abstract description 8
- 239000012895 dilution Substances 0.000 title abstract description 8
- 239000002817 coal dust Substances 0.000 claims abstract description 33
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 4
- 239000012141 concentrate Substances 0.000 claims description 2
- 239000004429 Calibre Substances 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 abstract description 10
- 239000002245 particle Substances 0.000 description 16
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Abstract
The utility model provides a coal dust concentration-dilution separator with an adjustable concentration ratio, which aims to solve the problem of unstable combustion of coal dust in a hearth caused by high primary air rate, low coal dust concentration and the like when a boiler runs under low load; the utility model comprises a primary air pipeline, an elbow pipeline concentration separator, a convex concentration-dilution separator, a wear-resistant ceramic baffle, a concentrated side pipeline, a diluted side pipeline and a large-caliber elbow. An elbow pipeline concentration separator is arranged along the primary air pipeline, a raised shade separator and a wear-resistant ceramic baffle are arranged on the inner wall of a coal dust channel behind the elbow pipeline concentration separator, a layer of wear-resistant ceramic material is wrapped on the surface of the raised shade separator, the wear-resistant ceramic baffle is connected with a bolt, and the angle of the wear-resistant ceramic baffle can be changed by rotating the bolt; the pulverized coal concentration is improved by the pulverized coal concentration separator, so that the ignition stability is improved.
Description
Technical Field
The utility model relates to the technical field of pulverized coal combustion, in particular to a pulverized coal concentration-dilution separator with an adjustable concentration ratio.
Background
With the continuous promotion of the adjustment of the Chinese electric power structure, the proportion of renewable energy sources such as hydropower, photoelectricity and the like gradually rises, and the proportion of thermal power generation gradually falls year by year. However, the capacity of the renewable energy sources for digestion and peak regulation is inferior to that of thermal power generation, and the thermal power generating unit needs to improve the flexibility and the peak regulation of the boiler according to situation requirements. The boiler can be in a low-load running state during peak shaving, at the moment, the concentration of pulverized coal is low, the temperature in a hearth is relatively low, and the ignition of the pulverized coal is delayed, so that the stability of the pulverized coal combustion in the hearth is difficult to ensure. To improve the stability of flame combustion, modifications to the combustion system, including improvements in pulverized coal combustion technology, are needed.
The existing low-load stable combustion technology mainly comprises the steps of increasing the concentration of coal dust in the primary air flow, increasing the initial temperature of the coal dust flow, increasing the fineness of coal dust particles and the like, and the concentration of the coal dust in the primary air flow is increased to reduce ignition heat so as to achieve the aim of stable combustion. The existing concentration-concentration separator mostly adopts the mode of impacting and utilizing the centrifugal force of an elbow to realize concentration-concentration separation, but the concentration ratio is inconvenient to adjust, and when the boiler load is higher, the concentration of coal dust is possibly caused to be too high, so that the ignition area is lack of oxygen to influence the combustion of volatile matters, and unstable ignition is caused. The utility model provides a coal dust concentration-dilution separator with an adjustable concentration ratio.
Disclosure of Invention
The utility model aims to provide a coal dust concentration-dilution separator with an adjustable concentration ratio, which is characterized by comprising a primary air pipeline, an elbow pipeline concentration separator, a convex concentration-dilution separator, an adjusting baffle, a concentration-side pipeline, a dilution-side pipeline and a large-caliber elbow.
Further, the inner wall of the coal powder channel behind the elbow pipeline concentrating separator is provided with a convex shade separator and an adjusting baffle, coal powder particles in the light side coal powder air flow impact the convex shade separator, the track of the coal powder particles is deviated, part of the coal powder particles in the light side enter the thick side pipeline, the coal powder air flow concentration of the thick side pipeline is increased, and the other part of the coal powder air flow flows into the light side pipeline.
Further, the surface of the protruding dense-thin separator is wrapped with a layer of wear-resistant ceramic, the adjusting baffle is connected with the bolt, the angle of the adjusting baffle can be changed through the control bolt, the dense-side pipeline is connected to one side of the inner wall of the coal powder pipeline and receives dense-phase coal powder airflow, the thin-side pipeline is connected with the coal powder pipeline through a large-caliber elbow, and the space at the joint of the large-caliber elbow and the dense-side pipeline is enlarged, so that the thin-phase coal powder airflow is smooth.
Further, protruding shade separator and buggy passageway are integrated into one piece setting, and outside laminating is connected with wear-resisting ceramic.
Further, the adjusting baffle is made of wear-resistant ceramic materials, a fastening piece is installed on the bolt, and an anti-slip layer is arranged on the fastening piece.
The beneficial effects of the utility model are as follows: the utility model provides a concentration ratio adjustable pulverized coal concentration separator, which utilizes the centrifugal force of a pulverized coal airflow flowing through an elbow pipeline concentration separator to divide the pulverized coal airflow into a concentrated side and a light side, wherein the concentrated side pulverized coal airflow flows into a concentrated phase pulverized coal pipeline, pulverized coal particles in the light side pulverized coal airflow collide with a convex concentration separator, partial pulverized coal particle movement tracks deflect and enter the concentrated side pipeline, so that the pulverized coal airflow concentration of the concentrated side pipeline is further improved, when the angle between an adjusting baffle and the pulverized coal airflow movement direction is 0 DEG, the adjusting baffle has little influence on the movement speed and the movement tracks of the pulverized coal airflow, when the adjusting baffle and the pulverized coal airflow movement direction form a certain angle through rotating bolts, part of pulverized coal particles in the concentrated side pulverized coal airflow collide with the adjusting baffle, due to the action of the impact force, the pulverized coal particles deflect into the light side pulverized coal airflow, the other part of the concentrated side pipeline is continuously introduced, the concentration of the pulverized coal airflow on the concentrated side is changed, the pulverized coal concentration on the concentrated side is improved, the pulverized coal concentration is improved under low load, the ignition heat is reduced, the combustion stability is improved, unstable ignition caused by overhigh pulverized coal concentration under high load is avoided, in addition, the adjusting baffle and the convex concentration separator are all used, and the service life of a wear-resistant ceramic device is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 isbase:Sub>A sectional view ofbase:Sub>A-base:Sub>A of fig. 1.
Fig. 3 is a sectional view of B-B of fig. 1.
Fig. 4 is an enlarged view of a portion C of fig. 1.
In the figure: 1-a primary air pipeline; 2-an elbow pipeline concentrating separator; 3-adjusting a baffle; 4-a convex shade separator; 5-large-caliber elbow; 6-pale side piping; 7-a concentrate side pipeline; 8-a bolt; 9-wear-resistant ceramic; 10-a fastener; 11-anti-slip layer.
Detailed Description
The utility model provides a coal dust concentration separator with an adjustable concentration ratio, and the specific embodiment is further described below with reference to the accompanying drawings.
The concentration ratio adjustable coal dust concentration separator is characterized by comprising a primary air pipeline 1, an elbow pipeline concentration separator 2, a convex concentration separator 4, an adjusting baffle 3, a concentration side pipeline 7, a light side pipeline 6 and a large-caliber elbow 5, wherein the elbow pipeline concentration separator 2 is arranged along the primary air pipeline 1 and is used as the concentration separator, when the coal dust airflow flows through the elbow pipeline concentration separator 2, due to the effect of centrifugal force, the coal dust concentration on the outer side of the coal dust airflow is higher, the coal dust concentration on the inner side is lower, the coal dust airflow on the outer side flows into the concentration side pipeline 7, the inner wall of a coal dust channel behind the elbow pipeline concentration separator 2 is provided with the convex concentration separator 4 and an adjusting baffle 3, coal dust particles in the light side coal dust airflow impact the convex concentration separator 4, the track of the coal dust particles is offset, part of the coal dust particles in the light side enters the concentration side pipeline 7, the coal dust airflow concentration of the concentration side pipeline 7 is increased, the other part of the coal dust airflow flows into the light side pipeline 6, the surface of the convex concentration separator 4 is wrapped with a layer of ceramic 9, the adjusting baffle 3 is connected with the inner wall of the coal dust pipeline 8 through a control bolt 8, the coal dust flow can be changed, and the aperture of the coal dust flow can flow through the large-caliber pipeline 5 is changed, and the aperture of the coal dust flow channel is connected with the large-caliber pipeline 5, and the aperture of the coal dust flow channel is changed, and the aperture of the coal dust flow is changed.
The convex shade separator 4 and the coal powder channel are integrally formed, and the outer side of the convex shade separator is connected with wear-resistant ceramics 9 in a bonding mode.
The adjusting baffle 3 is made of wear-resistant ceramic materials.
The bolt 8 is provided with a fastening piece 10, and the fastening piece 10 is provided with an anti-slip layer 11.
The working process is as follows: the centrifugal force generated when the pulverized coal airflow flows through the elbow pipeline concentrating separator is utilized to divide the pulverized coal airflow into a concentrated side and a light side, the concentrated side pulverized coal airflow flows into a concentrated side pipeline, pulverized coal particles in the light side pulverized coal airflow collide with the convex concentrated-light separator, partial pulverized coal particle movement tracks deflect and enter the concentrated side pipeline, so that the pulverized coal airflow concentration of the concentrated side pipeline is further improved, when the angle between the regulating baffle and the pulverized coal airflow movement direction is 0 DEG, the regulating baffle has little influence on the movement speed and movement tracks of the pulverized coal airflow, when the rotating bolt is used for changing the regulating baffle to form a certain angle with the pulverized coal airflow movement direction, partial pulverized coal particles in the concentrated side pulverized coal airflow collide with the regulating baffle, and due to the action of the collision force, the pulverized coal particles deflect into the light side pulverized coal airflow, and the other part of the pulverized coal particles continue to enter the concentrated side pipeline, so that the concentration of the pulverized coal airflow at the two sides is changed.
The foregoing embodiments are only for illustrating the present utility model, and the structures, connection manners, method steps and the like of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solutions of the present utility model should not be excluded from the protection scope of the present utility model.
Claims (4)
1. The utility model provides a concentrate coal powder rich and lean separator that compares adjustable, includes wind pipeline (1), elbow pipeline concentrated separator (2), protruding rich and lean separator (4), adjusting baffle (3), rich side pipeline (7), lean side pipeline (6), heavy-calibre elbow (5), a serial communication port, the journey of wind pipeline (1) is equipped with elbow pipeline concentrated separator (2) and is regarded as rich and lean separator, the coal powder passageway inner wall at elbow pipeline concentrated separator (2) rear is equipped with protruding rich and lean separator (4) and adjusting baffle (3), protruding rich and lean separator (4) surface parcel one deck wear-resisting ceramic (9), adjusting baffle (3) are met with bolt (8), rich side pipeline (7) connect in coal powder pipeline inner wall one side, lean side pipeline (6) link to each other with the coal powder pipeline through heavy-calibre elbow (5).
2. The coal powder concentration separator with the adjustable concentration ratio according to claim 1, wherein the convex concentration separator (4) and the coal powder channel are integrally formed, and wear-resistant ceramics (9) are attached to the outer side.
3. The coal dust concentration-light separator with adjustable concentration ratio according to claim 1, wherein the adjusting baffle (3) is made of wear-resistant ceramic materials.
4. The coal dust concentration-light separator with the adjustable concentration ratio according to claim 1, wherein a fastening piece (10) is installed on the bolt (8), and an anti-slip layer (11) is arranged on the fastening piece (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222617138.9U CN218890832U (en) | 2022-10-05 | 2022-10-05 | Concentration ratio adjustable coal powder concentration and dilution separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222617138.9U CN218890832U (en) | 2022-10-05 | 2022-10-05 | Concentration ratio adjustable coal powder concentration and dilution separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218890832U true CN218890832U (en) | 2023-04-21 |
Family
ID=85999806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222617138.9U Expired - Fee Related CN218890832U (en) | 2022-10-05 | 2022-10-05 | Concentration ratio adjustable coal powder concentration and dilution separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218890832U (en) |
-
2022
- 2022-10-05 CN CN202222617138.9U patent/CN218890832U/en not_active Expired - Fee Related
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| 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: 20230421 |