CN219674286U - Online adjustable pulverized coal distribution adjusting system - Google Patents
Online adjustable pulverized coal distribution adjusting system Download PDFInfo
- Publication number
- CN219674286U CN219674286U CN202320118904.9U CN202320118904U CN219674286U CN 219674286 U CN219674286 U CN 219674286U CN 202320118904 U CN202320118904 U CN 202320118904U CN 219674286 U CN219674286 U CN 219674286U
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- CN
- China
- Prior art keywords
- pulverized coal
- adjusting rod
- phase adjusting
- dilute phase
- regulating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003245 coal Substances 0.000 title claims abstract description 41
- 238000009826 distribution Methods 0.000 title claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The utility model discloses an online adjustable pulverized coal distribution regulating system, which comprises a DCS system, a pulverized coal distributor, a dilute phase regulating rod, a concentrated phase regulating rod main shaft, a dilute phase regulating rod main shaft, a concentrated phase regulating rod and an electric regulating executing mechanism, wherein the dilute phase regulating rod main shaft is connected with the concentrated phase regulating rod main shaft; the end part of the dilute phase adjusting rod main shaft penetrates through the dilute phase area of the pulverized coal distributor and then is connected with one end of the dilute phase adjusting rod, the end part of the concentrated phase adjusting rod main shaft penetrates through the concentrated phase area of the pulverized coal distributor and then is connected with one end of the concentrated phase adjusting rod, the other end of the concentrated phase adjusting rod and the other end of the dilute phase adjusting rod are connected with an electric adjusting executing mechanism, and the control end of the electric adjusting executing mechanism is connected with a DCS system.
Description
Technical Field
The utility model belongs to the field of coal-fired power plant pulverizing systems, and relates to an online adjustable pulverized coal distribution and adjustment system.
Background
In modern coal-fired boiler systems, the pulverizing system is an important component of the boiler combustion system, and its operating conditions directly affect the economy and safety of boiler combustion. The large deviation of the wind speed and the powder amount of the primary air pipe is the most common problem in the existing unit, and the problems of pipe blockage of a coal powder pipeline, incomplete combustion in a furnace, large deviation of heat load in the furnace and the like can be caused. The conventional solution is to adjust the deviation of wind speed and powder amount by adding a coal powder distributor. But the method can only be adjusted by the test unit by "test-adjustment-test". In the daily operation of the unit, power plant operators cannot accurately and timely adjust various economic and safety problems caused by wind speed and powder quantity deviation. Therefore, research and development of a novel on-line adjustable pulverized coal distribution regulating system has very important significance.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide an online adjustable pulverized coal distribution regulating system which can avoid the problems of economy and safety caused by deviation of wind speed and wind quantity.
In order to achieve the aim, the on-line adjustable pulverized coal distribution device comprises a DCS system, a pulverized coal distributor, a dilute phase adjusting rod, a concentrated phase adjusting rod main shaft, a dilute phase adjusting rod main shaft, a concentrated phase adjusting rod and an electric adjusting executing mechanism;
the end part of the dilute phase adjusting rod main shaft penetrates through the dilute phase area of the pulverized coal distributor and then is connected with one end of the dilute phase adjusting rod, the end part of the concentrated phase adjusting rod main shaft penetrates through the concentrated phase area of the pulverized coal distributor and then is connected with one end of the concentrated phase adjusting rod, the other end of the concentrated phase adjusting rod and the other end of the dilute phase adjusting rod are connected with an electric adjusting executing mechanism, and the control end of the electric adjusting executing mechanism is connected with a DCS system.
The side wall of the pulverized coal distributor is provided with a plurality of sealing air inlets.
Each sealing air port is positioned around the main shaft of the dilute phase adjusting rod and around the main shaft of the dense phase adjusting rod.
The sealed air port is communicated with an external boiler cold primary air duct.
The outer wall of the pulverized coal distributor is provided with a dial matched with the dilute phase adjusting rod.
The device also comprises a storage device for storing the wind speed and the powder quantity of the secondary air pipe under different concentrated phase adjusting rod opening degrees and different dilute phase adjusting rod opening degrees, and the storage device is connected with the DCS system.
The utility model has the following beneficial effects:
when the on-line adjustable pulverized coal distribution regulating system is specifically operated, the DCS system obtains the opening degree of the corresponding concentrated phase regulating rod and the opening degree of the dilute phase regulating rod in a database checking mode according to the wind speed and the wind quantity of the required primary air pipe, and the opening degree of the dilute phase regulating rod and the opening degree of the concentrated phase regulating rod are regulated by the electric regulating executing mechanism, so that the opening degree of the dilute phase regulating baffle plate and the opening degree of the concentrated phase regulating baffle plate in the pulverized coal distributor can be regulated, the requirements of the wind speed and the wind quantity of the required primary air pipe are met, the economic and safety problems caused by wind speed and wind quantity deviation are avoided, and the on-line adjustable pulverized coal distribution regulating system is simple in structure, convenient to operate and extremely high in practicability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
fig. 3 is a structural view of the electric adjustment actuator 7.
Wherein, 1 is the pulverized coal distributor, 2 is the dilute phase regulation pole, 3 is the dense phase regulation pole main shaft, 4 is the dilute phase regulation pole main shaft, 5 is the dense phase regulation pole, 6 is sealed wind gap, 7 is electric control actuating mechanism.
Detailed Description
In order to make the present utility model better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, but not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
In the accompanying drawings, there is shown a schematic structural diagram in accordance with a disclosed embodiment of the utility model. The figures are not drawn to scale, wherein certain details are exaggerated for clarity of presentation and may have been omitted. The shapes of the various regions, layers and their relative sizes, positional relationships shown in the drawings are merely exemplary, may in practice deviate due to manufacturing tolerances or technical limitations, and one skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions as actually required.
Referring to fig. 1, 2 and 3, the on-line adjustable pulverized coal distribution device of the utility model comprises a DCS system, a pulverized coal distributor 1, a dilute phase adjusting lever 2, a concentrated phase adjusting lever spindle 3, a dilute phase adjusting lever spindle 4, a concentrated phase adjusting lever 5, a sealed tuyere 6 and an electric adjusting actuator 7;
the end part of the dilute phase adjusting rod main shaft 4 passes through the dilute phase region of the pulverized coal distributor 1 and then is connected with one end of the dilute phase adjusting rod 2, the end part of the concentrated phase adjusting rod main shaft 3 passes through the concentrated phase region of the pulverized coal distributor 1 and then is connected with one end of the concentrated phase adjusting rod 5, the other end of the concentrated phase adjusting rod 5 and the other end of the dilute phase adjusting rod 2 are connected with an electric adjusting executing mechanism 7, and the control end of the electric adjusting executing mechanism 7 is connected with a DCS system.
It should be noted that, the side wall of the pulverized coal distributor 1 is provided with a plurality of sealing air openings 6, wherein each sealing air opening 6 is located around the dilute phase adjusting rod main shaft 4 and around the dense phase adjusting rod main shaft 3, the sealing air opening 6 is communicated with a cold primary air pipe of the boiler, and cold primary air is adopted as sealing air to blow into the pulverized coal distributor 1 during operation, and because the cold primary air pressure is higher, the sealing air can penetrate through the whole dilute phase adjusting rod main shaft 4 and the dense phase adjusting rod main shaft 3, so that the problem of jamming of the dilute phase adjusting rod main shaft 4 and the dense phase adjusting rod main shaft 3 is avoided; the outer wall of the pulverized coal distributor 1 is provided with a dial matched with a dilute phase adjusting rod 2.
Before working, the distribution rules of the wind speed and the powder quantity of the primary air pipe under the opening degrees of the different concentrated phase adjusting rods 5 and the opening degrees of the different dilute phase adjusting rods 2 are obtained through field test, and a database is built according to the distribution rules.
The specific working process of the utility model is as follows:
the DCS system obtains the opening of the corresponding dense phase adjusting rod 5 and the opening of the dilute phase adjusting rod 2 according to the required primary air pipe wind speed and air quantity in a database checking mode, generates control signals according to the opening of the corresponding dense phase adjusting rod 5 and the opening of the dilute phase adjusting rod 2, then controls the electric adjusting executing mechanism 7 according to the control signals, and the electric adjusting executing mechanism 7 drives the dense phase adjusting rod 5 and the dilute phase adjusting rod 2 to move so as to adjust the opening of the dilute phase adjusting rod 2 and the opening of the dense phase adjusting rod 5, then adjusts the opening of the dilute phase adjusting baffle through the dilute phase adjusting rod main shaft 4, and simultaneously adjusts the opening of the dense phase adjusting baffle through the dense phase adjusting rod main shaft 3, so that the requirements of the required primary air pipe wind speed and the required powder quantity are met.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.
Claims (8)
1. An online adjustable pulverized coal distribution adjusting system is characterized by comprising a pulverized coal distributor (1), a dilute phase adjusting rod (2), a dense phase adjusting rod main shaft (3), a dilute phase adjusting rod main shaft (4), a dense phase adjusting rod (5) and an electric adjusting executing mechanism (7);
the end part of the dilute phase adjusting rod main shaft (4) passes through the dilute phase area of the pulverized coal distributor (1) and then is connected with one end of the dilute phase adjusting rod (2), the end part of the concentrated phase adjusting rod main shaft (3) passes through the concentrated phase area of the pulverized coal distributor (1) and then is connected with one end of the concentrated phase adjusting rod (5), the other end of the concentrated phase adjusting rod (5) and the other end of the dilute phase adjusting rod (2) are connected with an electric adjusting executing mechanism (7), and the control end of the electric adjusting executing mechanism (7) is connected with a DCS system.
2. The on-line adjustable pulverized coal distribution regulating system according to claim 1, characterized in that a plurality of sealing tuyeres (6) are arranged on the side wall of the pulverized coal distributor (1).
3. The on-line adjustable pulverized coal distribution regulating system according to claim 2, characterized in that each sealing tuyere (6) is located around the dilute phase regulating lever spindle (4) and around the dense phase regulating lever spindle (3).
4. The on-line adjustable pulverized coal distribution regulating system according to claim 2, characterized in that the sealed tuyere (6) is communicated with an external boiler cold primary air duct.
5. The on-line adjustable pulverized coal distribution regulating system according to claim 1, characterized in that a dial matched with the dilute phase regulating rod (2) is arranged on the outer wall of the pulverized coal distributor (1).
6. The on-line adjustable pulverized coal distribution regulating system according to claim 1, characterized in that the control end of the electric regulating actuator (7) is connected with an external DCS system.
7. The on-line adjustable pulverized coal distribution regulating system according to claim 1, further comprising a memory for storing the wind speed and the powder amount of the secondary air pipe under the opening degree of the different concentrated phase regulating rods (5) and the opening degree of the different dilute phase regulating rods (2).
8. The on-line adjustable pulverized coal distribution regulating system according to claim 7, wherein the DCS system is connected with an external DCS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320118904.9U CN219674286U (en) | 2023-01-16 | 2023-01-16 | Online adjustable pulverized coal distribution adjusting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320118904.9U CN219674286U (en) | 2023-01-16 | 2023-01-16 | Online adjustable pulverized coal distribution adjusting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219674286U true CN219674286U (en) | 2023-09-12 |
Family
ID=87920021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320118904.9U Active CN219674286U (en) | 2023-01-16 | 2023-01-16 | Online adjustable pulverized coal distribution adjusting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219674286U (en) |
-
2023
- 2023-01-16 CN CN202320118904.9U patent/CN219674286U/en active Active
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