CN218178936U - Air chamber structure for transversely and uniformly distributing air at two sides of grate-fired furnace - Google Patents
Air chamber structure for transversely and uniformly distributing air at two sides of grate-fired furnace Download PDFInfo
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- CN218178936U CN218178936U CN202221663730.6U CN202221663730U CN218178936U CN 218178936 U CN218178936 U CN 218178936U CN 202221663730 U CN202221663730 U CN 202221663730U CN 218178936 U CN218178936 U CN 218178936U
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Abstract
The utility model relates to a plenum structure that is used for two side horizontal even air distributions of layer combustion stove, include: the throttle baffle, main ventilation pipe and the air-blower of grate, bellows, L type, the utility model discloses an install a plurality of throttle baffles in the bellows, because a plurality of throttle baffles are cascaded decline from the air outlet that is close to main ventilation pipe to the air outlet direction of keeping away from main ventilation pipe and arrange and its vertical face all with gas flow direction arranges perpendicularly in the bellows, its horizontal face all with gas flow direction parallel arrangement in the bellows, this structure can strengthen gas disturbance by a wide margin under the prerequisite that increases a small amount of windage, and the air distribution homogeneity in the reinforcing bellows strengthens burning in the burning furnace of stratum, reduces mechanical incomplete combustion heat loss and chemical incomplete combustion heat loss, improves the thermal efficiency of layer burning furnace.
Description
Technical Field
The utility model relates to the technical field, in particular to an air chamber structure that is used for two side horizontal even air distributions of grate-fired furnace.
Background
In recent years, with the continuous deepening of the policy of energy conservation and emission reduction in China, the energy conservation and emission reduction of industrial boilers with high energy consumption are more and more emphasized. The industrial boiler is an important heat energy power device in China, more than 60 industrial boilers are used in China at present, wherein the grate firing boiler accounts for about 70 percent, the annual coal consumption accounts for one third of the raw coal output in China, and the grate firing boiler is a coal-consuming household second to a power station boiler. The grate-fired boiler is the most combustion equipment adopted in the domestic heat supply boiler at present, and the problem of uneven transverse air distribution is serious due to the fact that most of the grate-fired boilers use double-side air supply structures, and great waste is caused. The problem of uniformity of air distribution along the transverse direction of the fire grate is solved, and the method is one of key technologies for improving the combustion efficiency of the grate-fired furnace.
In recent years, with the continuous development of energy-saving and environment-friendly technologies, a plurality of research institutions research and develop a uniform air distribution structure of an air chamber of a grate-fired furnace, but the air chamber structure for solving the problem of transverse uniform air distribution of the grate-fired furnace is provided under the condition of not greatly increasing the air resistance. Patent CN201210192671.3 discloses a 'uniform air distribution device at an air chamber inlet of a grate firing furnace', which adopts a throttle baffle arranged at the upper part of the air chamber inlet to fill a low-speed area on a grate at the front part of the air chamber, improves the uniformity of air distribution above the air chamber to a certain extent, controls resistance in a smaller range, and improves the operation efficiency of the grate firing furnace, but the patent fails to completely solve the problem of non-uniform air distribution at the middle lower part of the air chamber; patent CN201520702214.3 discloses a "uniformly air distribution grate air chamber", which is characterized in that an air distribution plate is additionally arranged on the upper portion of an air chamber main body, so that the uniformity of air distribution is improved, the flow rate of combustion-supporting air passing through the air distribution plate is properly reduced, and the heat efficiency is improved.
Therefore, how to provide an air chamber structure for horizontal uniform air distribution on both sides of a grate-fired furnace, and improving the horizontal air distribution uniformity of the grate-fired furnace is a problem that needs to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides a plenum structure that is used for the horizontal even air distribution of two sides of layer burning stove solves the uneven technical problem of layer burning stove horizontal amount of wind distribution.
The utility model provides an above-mentioned technical problem's technical scheme as follows: an air chamber structure for bilateral transverse uniform air distribution of a grate-fired furnace comprises: a fire grate, an air box, an L-shaped throttle baffle, a main ventilating pipe and a blower,
the grate is arranged at an air inlet at the bottom of the grate furnace and is sequentially provided with a plurality of vent holes along the air inlet direction of the grate furnace;
the air box is fixed on the bottom surface of the grate, and the top surface of the air box is an opening communicated with the plurality of vent holes;
the two air outlets of the main ventilation pipe are symmetrically fixed on the two opposite side box walls of the air box and are communicated with the inside of the air box; the air outlet of the blower is communicated with the air inlet of the main ventilation pipe;
the two ends of the plurality of throttle baffles are respectively and vertically fixed on two opposite inner side box walls of the air box and are arranged in a stepped descending manner from the air outlet close to the main ventilation pipe to the air outlet far away from the main ventilation pipe, the vertical plate surfaces of the plurality of throttle baffles are all vertically arranged with the flow direction of the gas in the air box, and the transverse plate surfaces of the plurality of throttle baffles are all arranged in parallel with the flow direction of the gas in the air box.
The utility model has the advantages that: through installing a plurality of throttle baffles in the bellows, because a plurality of throttle baffles are cascaded decline from the air outlet that is close to main ventilation pipe to the air outlet direction of keeping away from main ventilation pipe and arrange and its vertical face all with gas flow direction arranges perpendicularly in the bellows, its horizontal face all with gas flow direction parallel arrangement in the bellows, this structure can strengthen the gas disturbance by a wide margin under the prerequisite that increases a small amount of windage, strengthens wind distribution homogeneity in the bellows, and burning in the intensive layer combustion stove reduces the incomplete heat loss of mechanical incomplete combustion and the incomplete heat loss of chemical combustion, improves the thermal efficiency of layer combustion stove.
The air box further comprises a partition plate which is arranged along the direction vertical to the flow direction of the gas in the air box, is fixed in the air box and divides the interior of the air box into two independent air cavities; the plurality of throttle baffles are symmetrically arranged in the two air cavities in a step shape.
The air conditioner further comprises a plurality of branch ventilation pipes, wherein both ends of the main ventilation pipe are closed ends, the side walls close to both ends of the main ventilation pipe are provided with a plurality of air outlets, and the side wall of the middle section of the main ventilation pipe is provided with an air inlet communicated with the air blower; and air inlets at one ends of the branch ventilation pipes are respectively fixed and communicated with a plurality of air outlets of the main ventilation pipe, and air outlets at the other ends of the branch ventilation pipes are respectively fixed on the two opposite side box walls of the air box and are respectively communicated with the two air cavities.
Further, the length of the vertical plate surface of the throttling baffle is 60mm-80mm, and the length of the transverse plate surface of the throttling baffle is 80mm-100mm.
Furthermore, the distance between the upper part and the lower part of the throttle baffle plate in the vertical direction of every two adjacent throttle baffles in one air cavity is 70-80 mm, and the distance between the throttle baffle plates in the airflow direction is 320-330 mm.
Further, the width of the bellows is: 800mm-1500mm, length: 9000mm-11000mm and 600mm-1200mm in height.
Drawings
FIG. 1 is a schematic structural view of a vertical view of a plenum structure for lateral uniform air distribution on both sides of a grate-fired furnace according to the present invention;
fig. 2 is a schematic view of the overlooking structure of the air chamber structure for the bilateral lateral uniform air distribution of the grate-fired furnace of the present invention.
In the drawings, the reference numbers indicate the following list of parts:
1. the grate comprises a grate 11, a vent hole 2, an air box 3, a throttling baffle 4, a main ventilation pipe 5, an air blower 6, a grate furnace 7, a partition plate 8 and branch ventilation pipes.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, an air chamber structure for bilateral lateral uniform air distribution of a grate-fired furnace comprises: a fire grate 1, an air box 2, an L-shaped throttle baffle 3, a main ventilating pipe 4 and a blower 5,
the grate 1 is arranged at an air inlet at the bottom of the grate-fired furnace 6 and is sequentially provided with a plurality of vent holes 11 along the air inlet direction of the grate-fired furnace 6;
the air box 2 is fixed on the bottom surface of the grate 1, and the top surface of the air box is provided with an opening communicated with the plurality of ventilation holes 11;
two air outlets of the main ventilation pipe 4 are symmetrically fixed on two opposite side box walls of the air box 2 and are communicated with the inside of the air box 2; the air outlet of the blower 5 is communicated with the air inlet of the main ventilation pipe 4;
a plurality of the two ends of the throttle baffle 3 are respectively and vertically fixed on the two opposite inner side box walls of the air box 2 and are close to the air outlet of the main ventilation pipe 4 in a stepped descending manner in the direction far away from the air outlet of the main ventilation pipe 4, and the vertical plate surfaces of the throttle baffle 3 are vertically arranged with the gas flowing direction in the air box 2, and the transverse plate surfaces of the throttle baffle 3 are arranged in parallel with the gas flowing direction in the air box 2.
In some specific embodiments, a partition plate 7 may be further included, the partition plate 7 being disposed in a direction perpendicular to the gas flow direction in the windbox 2 and fixed inside the windbox 2 and dividing the inside of the windbox 2 into two independent air chambers; the plurality of throttle baffles 3 are symmetrically arranged in the two air cavities in a step shape.
In some specific embodiments, the air conditioner may further include a plurality of branch ventilation pipes 8, both ends of the main ventilation pipe 4 are closed ends, side walls near both ends of the main ventilation pipe are respectively provided with a plurality of air outlets, and a side wall in the middle section of the main ventilation pipe 4 is provided with an air inlet communicated with the blower 5; and air inlets at one ends of the branch ventilation pipes 8 are respectively fixed and communicated with a plurality of air outlets of the main ventilation pipe 4, and air outlets at the other ends of the branch ventilation pipes are respectively fixed on the two opposite side box walls of the air box 2 and are respectively communicated with the two air cavities.
Specifically, the length of the vertical plate surface of the throttle baffle 3 may be 60mm to 80mm, and the length of the transverse plate surface thereof may be 80mm to 100mm.
Specifically, the distance between every two adjacent throttle baffles 3 in one air cavity in the vertical direction is 70-80 mm, and the distance between every two adjacent throttle baffles in the air flow direction is 320-330 mm.
Specifically, the width of the windbox 2 is: 800mm-1500mm, length: 9000mm-11000mm and 600mm-1200mm in height.
The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. An air chamber structure for bilateral transverse uniform air distribution of a grate-fired furnace is characterized by comprising: a fire grate (1), an air box (2), an L-shaped throttle baffle (3), a main ventilating pipe (4) and a blower (5),
the grate (1) is arranged at an air inlet at the bottom of the grate furnace (6) and is sequentially provided with a plurality of vent holes (11) along the air inlet direction of the grate furnace (6);
the air box (2) is fixed on the bottom surface of the grate (1), and the top surface of the air box is an opening communicated with the plurality of ventilation holes (11);
two air outlets of the main ventilation pipe (4) are symmetrically fixed on two opposite side box walls of the air box (2) and are communicated with the inside of the air box (2); the air outlet of the blower (5) is communicated with the air inlet of the main ventilation pipe (4);
a plurality of the two ends of the throttle baffle (3) are respectively and vertically fixed on the two opposite inner side box walls of the air box (2) and are close to the air outlet of the main ventilation pipe (4) in a stepped descending manner in the direction far away from the air outlet of the main ventilation pipe (4), and the throttle baffle (3) is vertically arranged on the vertical surface in the air box (2) in the flowing direction of the gas and is arranged in parallel with the flowing direction of the gas in the air box (2) on the horizontal surface.
2. The plenum structure for double-sided lateral uniform air distribution of a grate-fired furnace according to claim 1, further comprising a partition plate (7), the partition plate (7) being arranged in a direction perpendicular to the air flow direction in the windbox (2) and fixed inside the windbox (2) and dividing the inside of the windbox (2) into two independent air chambers; the plurality of throttling baffles (3) are symmetrically arranged in the two air cavities in a step shape.
3. The air chamber structure for bilateral lateral uniform air distribution of the grate-fired furnace according to claim 2, further comprising a plurality of branch ventilation pipes (8), wherein both ends of the main ventilation pipe (4) are closed ends and the side walls near both ends are provided with a plurality of air outlets, and the side wall of the middle section of the main ventilation pipe (4) is provided with an air inlet communicated with the blower (5); and air inlets at one ends of the branch ventilation pipes (8) are respectively fixed and communicated with a plurality of air outlets of the main ventilation pipe (4), and air outlets at the other ends of the branch ventilation pipes are respectively fixed on the two opposite side box walls of the air box (2) and are respectively communicated with the two air cavities.
4. The air chamber structure for bilateral lateral uniform air distribution of a grate-fired furnace according to claim 1, characterized in that the length of the vertical plate surface of the throttle baffle (3) is 60mm-80mm, and the length of the lateral plate surface is 80mm-100mm.
5. The air chamber structure for bilateral lateral uniform air distribution of a grate-fired furnace as claimed in claim 2, wherein the distance between the upper and lower vertical directions of two adjacent throttle baffles (3) in one air chamber is 70mm-80mm, and the distance between the upper and lower vertical directions of the air flow is 320mm-330mm.
6. The plenum structure for bilateral lateral uniform air distribution of a grate-fired furnace in accordance with claim 1, wherein the width of the windbox (2) is: 800mm-1500mm, length: 9000mm-11000mm and 600mm-1200mm in height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221663730.6U CN218178936U (en) | 2022-06-29 | 2022-06-29 | Air chamber structure for transversely and uniformly distributing air at two sides of grate-fired furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221663730.6U CN218178936U (en) | 2022-06-29 | 2022-06-29 | Air chamber structure for transversely and uniformly distributing air at two sides of grate-fired furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218178936U true CN218178936U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221663730.6U Active CN218178936U (en) | 2022-06-29 | 2022-06-29 | Air chamber structure for transversely and uniformly distributing air at two sides of grate-fired furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218178936U (en) |
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2022
- 2022-06-29 CN CN202221663730.6U patent/CN218178936U/en active Active
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