CN219389803U - Primary air segmentation uniform air distribution system of biomass direct-fired grate boiler - Google Patents
Primary air segmentation uniform air distribution system of biomass direct-fired grate boiler Download PDFInfo
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- CN219389803U CN219389803U CN202320379813.0U CN202320379813U CN219389803U CN 219389803 U CN219389803 U CN 219389803U CN 202320379813 U CN202320379813 U CN 202320379813U CN 219389803 U CN219389803 U CN 219389803U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
A primary air sectional uniform air distribution system of a biomass direct-fired grate boiler relates to a primary air sectional air distribution system of a biomass direct-fired grate boiler. The utility model aims to solve the technical problem of uneven distribution of primary air on the left side and the right side of the traditional biomass direct-fired grate boiler. The system can solve the problem of uneven distribution of the primary air on the left side and the right side of the biomass boiler, and meanwhile, the primary air adopts a multi-section air distribution mode, so that air distribution adjustment can be carried out according to the combustion condition of fuel on a fire grate; the air distribution system has the advantages of strong air quantity adjusting capability, uniform air distribution at two sides of the furnace and simple operation. According to the utility model, the primary air main pipe and the primary air dividing air duct are of tapered structures, so that the inlet pressure of each primary air chamber is ensured to be the same.
Description
Technical Field
The utility model relates to a primary air sectional air distribution system of a biomass direct-fired grate boiler.
Background
The biomass direct-fired grate boiler is a main device for biomass power generation and heat supply utilization, the combustion performance and pollutant emission indexes of the boiler are design parameters mainly considered by the boiler, and primary air segmentation and uniform air distribution of the boiler have great effects on improving fuel combustion characteristics and controlling pollutant emission.
The existing biomass direct-fired grate boiler generally adopts a primary air single-side air inlet mode, primary air enters a hearth from air holes below the grate after passing through each air chamber, and the air chambers are directly connected through a communication air duct, but the communication air duct is small in size and large in local resistance, so that the air inlet quantity of the air chamber for rear air inlet is small, and the primary air quantity deviation on the left side and the right side of the boiler is caused, so that adverse effects on the performance of the boiler and pollutant emission are generated. In recent years, a double-side air inlet mode of two-side primary air is adopted for overcoming the problem, but the setting cost of an air duct, a baffle plate, a flow measuring device and the like is increased, and meanwhile, the operation control complexity is increased.
Disclosure of Invention
The utility model aims to solve the technical problem of uneven distribution of primary air on the left side and the right side of the traditional biomass direct-fired grate boiler, and provides a primary air sectional uniform air distribution system of the biomass direct-fired grate boiler.
The utility model relates to a primary air sectionalized uniform air distribution system of a biomass direct-fired grate boiler, which consists of a grate 1, a primary air chamber 2, an air chamber partition plate 3, a primary air parent pipe 4, a primary air separation duct 5, a pressure measuring device 6, a flow measuring device 7, an air quantity adjusting baffle 8, a temperature measuring device 9, an air inlet pipeline 10, an ash bucket 11, an ash discharge pipe 12 and a gate valve 13;
a plurality of primary air chambers 2 are uniformly arranged below the fire grate 1, and the adjacent primary air chambers 2 are blocked by an air chamber partition plate 3;
the primary air main pipe 4 is communicated with a plurality of primary air separation air channels 5, each primary air separation air channel 5 supplies air for a row of primary air chambers 2, and the primary air separation air channels 5 supply air for one primary air chamber 2 through an air inlet pipeline 10; each primary air separation duct 5 is provided with a pressure measuring device 6, a flow measuring device 7 and an air quantity adjusting baffle 8; the primary air duct 4 is provided with an air quantity adjusting baffle 8 and a temperature measuring device 9; the primary air mother pipe 4 is of a tapered structure, and the inner diameter of the primary air mother pipe 4 is reduced stepwise along with the flowing direction of wind;
the ash bucket 11 is positioned below the inner cavity of the primary air chamber 2, an ash discharge pipe 12 is arranged below the ash bucket 11, and a gate valve 13 is arranged on the ash discharge pipe 12; the primary air separation duct 5 is arranged below the side of the ash bucket 11, and the interface of the air inlet pipeline 10 is positioned in the middle of the ash bucket 11; the primary air separation duct 5 has a tapered structure, and the inner diameter of the primary air separation duct 5 is reduced stepwise along the flow direction of the air.
All measuring devices and air quantity adjusting baffles 8 in the utility model are used for adjusting the air distribution of each section of air chamber.
The system can solve the problem of uneven distribution of the primary air on the left side and the right side of the biomass boiler, and meanwhile, the primary air adopts a multi-section air distribution mode, so that air distribution adjustment can be carried out according to the combustion condition of fuel on a fire grate; the air distribution system has the advantages of strong air quantity adjusting capability, uniform air distribution at two sides of the furnace and simple operation.
In the utility model, the primary air header 4 and the primary air separation duct 5 are of tapered structures, so that the inlet pressure of each primary air chamber 2 can be ensured to be the same.
Drawings
FIG. 1 is a schematic view of a primary air staged uniform air distribution system of a biomass direct fired grate boiler according to a first embodiment;
FIG. 2 is a left side view of the primary air separation duct 5 of FIG. 1;
fig. 3 is a bottom view of fig. 1.
Detailed Description
The first embodiment is as follows: the embodiment is a primary air sectionalized uniform air distribution system of a biomass direct-fired grate boiler, as shown in fig. 1-3, and specifically comprises a grate 1, a primary air chamber 2, an air chamber partition plate 3, a primary air main pipe 4, a primary air separation duct 5, a pressure measuring device 6, a flow measuring device 7, an air quantity adjusting baffle 8, a temperature measuring device 9, an air inlet pipeline 10, an ash bucket 11, an ash discharge pipe 12 and a gate valve 13;
a plurality of primary air chambers 2 are uniformly arranged below the fire grate 1, and the adjacent primary air chambers 2 are blocked by an air chamber partition plate 3;
the primary air main pipe 4 is communicated with a plurality of primary air separation air channels 5, each primary air separation air channel 5 supplies air for a row of primary air chambers 2, and the primary air separation air channels 5 supply air for one primary air chamber 2 through an air inlet pipeline 10; each primary air separation duct 5 is provided with a pressure measuring device 6, a flow measuring device 7 and an air quantity adjusting baffle 8; the primary air duct 4 is provided with an air quantity adjusting baffle 8 and a temperature measuring device 9; the primary air mother pipe 4 is of a tapered structure, and the inner diameter of the primary air mother pipe 4 is reduced stepwise along with the flowing direction of wind;
the ash bucket 11 is positioned below the inner cavity of the primary air chamber 2, an ash discharge pipe 12 is arranged below the ash bucket 11, and a gate valve 13 is arranged on the ash discharge pipe 12; the primary air separation duct 5 is arranged below the side of the ash bucket 11, and the interface of the air inlet pipeline 10 is positioned in the middle of the ash bucket 11; the primary air separation duct 5 has a tapered structure, and the inner diameter of the primary air separation duct 5 is reduced stepwise along the flow direction of the air.
All measuring devices and air volume adjusting baffles 8 in the present embodiment are used for adjusting the air distribution of each section of air chamber.
The system of the embodiment can solve the problem of uneven distribution of the primary air on the left side and the right side of the biomass boiler, and meanwhile, the primary air adopts a multi-section air distribution mode, so that air distribution adjustment can be carried out according to the combustion condition of fuel on a fire grate; the air distribution system has the advantages of strong air quantity adjusting capability, uniform air distribution at two sides of the furnace and simple operation.
In this embodiment, the primary air duct 4 and the primary air separation duct 5 are tapered structures, so that the inlet pressure of each primary air chamber 2 can be ensured to be the same.
The second embodiment is as follows: the first difference between this embodiment and the specific embodiment is that: the pressure measuring device 6 is a pressure gauge. The other is the same as in the first embodiment.
And a third specific embodiment: this embodiment differs from the first or second embodiment in that: the flow measuring device 7 is a flowmeter. The other embodiments are the same as those of the first or second embodiment.
The specific embodiment IV is as follows: this embodiment differs from one of the first to third embodiments in that: the temperature measuring device 9 is a thermocouple. The other is the same as in one of the first to third embodiments.
Fifth embodiment: the fourth difference between this embodiment and the third embodiment is that: the section of the primary air duct 4 is circular. The other is the same as in the fourth embodiment.
The utility model was verified with the following test:
test one: the experiment is a primary air sectional uniform air distribution system of a biomass direct-fired grate boiler, as shown in fig. 1-3, and specifically comprises a grate 1, a primary air chamber 2, an air chamber partition plate 3, a primary air main pipe 4, a primary air separation duct 5, a pressure measuring device 6, a flow measuring device 7, an air quantity regulating baffle 8, a temperature measuring device 9, an air inlet pipeline 10, an ash hopper 11, an ash discharge pipe 12 and a gate valve 13;
a plurality of primary air chambers 2 are uniformly arranged below the fire grate 1, and the adjacent primary air chambers 2 are blocked by an air chamber partition plate 3;
the primary air main pipe 4 is communicated with a plurality of primary air separation air channels 5, each primary air separation air channel 5 supplies air for a row of primary air chambers 2, and the primary air separation air channels 5 supply air for one primary air chamber 2 through an air inlet pipeline 10; each primary air separation duct 5 is provided with a pressure measuring device 6, a flow measuring device 7 and an air quantity adjusting baffle 8; the primary air duct 4 is provided with an air quantity adjusting baffle 8 and a temperature measuring device 9; the primary air mother pipe 4 is of a tapered structure, and the inner diameter of the primary air mother pipe 4 is reduced stepwise along with the flowing direction of wind;
the ash bucket 11 is positioned below the inner cavity of the primary air chamber 2, an ash discharge pipe 12 is arranged below the ash bucket 11, and a gate valve 13 is arranged on the ash discharge pipe 12; the primary air separation duct 5 is arranged below the side of the ash bucket 11, and the interface of the air inlet pipeline 10 is positioned in the middle of the ash bucket 11; the primary air separation duct 5 has a tapered structure, and the inner diameter of the primary air separation duct 5 is reduced stepwise along the flow direction of the air.
All measuring devices and air quantity adjusting baffles 8 in the test are used for adjusting the air distribution of each section of air chamber.
The system of the test can solve the problem of uneven distribution of primary air on the left side and the right side of the biomass boiler, and meanwhile, the primary air adopts a multi-section air distribution mode, so that air distribution adjustment can be carried out according to the combustion condition of fuel on a fire grate; the air distribution system has the advantages of strong air quantity adjusting capability, uniform air distribution at two sides of the furnace and simple operation.
In the test, the primary air duct 4 and the primary air separation duct 5 are of tapered structures, so that the inlet pressure of each primary air chamber 2 can be ensured to be the same.
Claims (5)
1. A primary air sectional uniform air distribution system of a biomass direct-fired grate boiler is characterized by comprising a grate (1), a primary air chamber (2), an air chamber partition plate (3), a primary air parent pipe (4), a primary air separation duct (5), a pressure measuring device (6), a flow measuring device (7), an air quantity adjusting baffle (8), a temperature measuring device (9), an air inlet pipeline (10), an ash bucket (11), an ash discharge pipe (12) and a gate valve (13);
a plurality of primary air chambers (2) are uniformly arranged below the fire grate (1), and the adjacent primary air chambers (2) are blocked by an air chamber partition plate (3);
the primary air main pipe (4) is communicated with a plurality of primary air separation air channels (5), each primary air separation air channel (5) supplies air for a row of primary air chambers (2), and the primary air separation air channels (5) supply air for one primary air chamber (2) through an air inlet pipeline (10); each primary air separation duct (5) is provided with a pressure measuring device (6), a flow measuring device (7) and an air quantity adjusting baffle (8); an air quantity adjusting baffle (8) and a temperature measuring device (9) are arranged on the primary air duct (4); the primary air duct (4) is of a tapered structure, and the inner diameter of the primary air duct (4) is reduced stepwise along with the flowing direction of wind;
the ash bucket (11) is positioned below the inner cavity of the primary air chamber (2), an ash discharge pipe (12) is arranged below the ash bucket (11), and a gate valve (13) is arranged on the ash discharge pipe (12); the primary air separation duct (5) is arranged below the side of the ash bucket (11), and the interface of the air inlet pipeline (10) is positioned in the middle of the ash bucket (11); the primary air separation duct (5) is of a tapered structure, and the inner diameter of the primary air separation duct (5) is reduced stepwise along the flowing direction of the air.
2. The primary air sectional uniform air distribution system of the biomass direct-fired grate boiler according to claim 1, wherein the pressure measuring device (6) is a pressure gauge.
3. The primary air sectional uniform air distribution system of the biomass direct-fired grate boiler according to claim 1, wherein the flow measuring device (7) is a flowmeter.
4. The primary air sectional uniform air distribution system of a biomass direct-fired grate boiler according to claim 1, wherein the temperature measuring device (9) is a thermocouple.
5. The primary air sectional uniform air distribution system of the biomass direct-fired grate boiler according to claim 1, wherein the section of the primary air mother pipe (4) is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320379813.0U CN219389803U (en) | 2023-03-03 | 2023-03-03 | Primary air segmentation uniform air distribution system of biomass direct-fired grate boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320379813.0U CN219389803U (en) | 2023-03-03 | 2023-03-03 | Primary air segmentation uniform air distribution system of biomass direct-fired grate boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219389803U true CN219389803U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320379813.0U Active CN219389803U (en) | 2023-03-03 | 2023-03-03 | Primary air segmentation uniform air distribution system of biomass direct-fired grate boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219389803U (en) |
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2023
- 2023-03-03 CN CN202320379813.0U patent/CN219389803U/en active Active
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