CN210267738U - Gas condensation hot air unit - Google Patents
Gas condensation hot air unit Download PDFInfo
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- CN210267738U CN210267738U CN201920661957.9U CN201920661957U CN210267738U CN 210267738 U CN210267738 U CN 210267738U CN 201920661957 U CN201920661957 U CN 201920661957U CN 210267738 U CN210267738 U CN 210267738U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The utility model belongs to the technical field of heating equipment, concretely relates to gas condensation air heater unit, which comprises a housin, be equipped with the furnace body in the casing, be equipped with the circulation storehouse between casing and the furnace body, the casing is close to the top and is equipped with the air intake, the furnace body top is equipped with the air outlet, it is equipped with furnace to lie in the air outlet below in the furnace body, combustor is connected to furnace' S one end, the below that lies in furnace in is equipped with the heat transfer storehouse, be equipped with the heat exchange tube that a plurality of rows of upper and lower in a row set up in the heat transfer storehouse, a plurality of rows of heat exchange tubes are the S-shaped connection, the heat exchange tube intercommunication furnace of the top row, the case of discharging fume is connected. The utility model provides a hot-blast unit of gas condensation, it is low to discharge flue gas temperature, adopts low level calorific value to calculate the thermal efficiency and can reach more than 108%, and the thermal efficiency is high, and energy saving and consumption reduction effect is obvious, and is energy-concerving and environment-protective, economical and practical, safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of firing equipment, concretely relates to hot-blast unit of gas condensation.
Background
The hot blast stove is a normal pressure heat source device for heating air and outputting hot air, and is composed of a combustion chamber and a heat exchanger. With the development of petroleum and natural gas technology in China, the development of hot air heating modes of petroleum and natural gas hot blast stoves is started. The gas hot-blast stove is a hot-blast stove using natural gas as raw material, i.e. a thermal equipment for heating air to produce hot-blast air by using heat energy discharged by gas combustion. The direct heating hot blast stove is generally applied to drying occasions without special requirements on cleanliness, and for the ventilation heating industry, an indirect heating hot blast stove is mostly adopted.
The existing gas hot blast stove has low heat exchange efficiency, the smoke exhaust temperature is generally 120 ℃ and 200 ℃, the smoke contains 16-18% of water vapor by volume fraction, and the heat accounts for about 80% of the heat of the smoke exhaust. Because the exhaust gas temperature of equipment is higher, the thermal efficiency is lower, and fuel consumption is more, and the combustion effect is poor, leads to certain degree environmental pollution.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hot-blast unit of gas condensation, heat exchange efficiency is high, and exhaust gas temperature is low, makes the flue gas temperature fall to below the dew point of flue gas, makes the vapor condensation in the flue gas, will can retrieve most sensible heat and latent heat in the flue gas, and is energy-concerving and environment-protective.
In order to achieve the technical purpose, the utility model adopts the technical scheme that:
the gas condensation hot air unit comprises a shell, wherein a furnace body is arranged in the shell, a circulating bin arranged around the furnace body is arranged between the shell and the furnace body, an air inlet is formed in the shell close to the top of the shell, an air outlet is formed in the top of the furnace body, and the air outlet extends out of the shell;
a hearth is arranged below the air outlet in the furnace body, one end of the hearth is connected with a burner, a heat exchange bin is arranged below the hearth in the furnace body, a plurality of heat exchange tubes which are transversely arranged are arranged in the heat exchange bin, the heat exchange tubes are arranged in rows from top to bottom, the heat exchange tubes are connected in an S shape, one end of the heat exchange tube in the uppermost row is communicated with the hearth, one end of the heat exchange tube in the lowermost row is connected with a smoke exhaust box, and the smoke exhaust box is connected with a draught fan;
the furnace body bottom is located the below of heat exchange tube is equipped with the flow distribution room, the flow distribution room is connected the forced draught blower, the top of flow distribution room is equipped with the board that looses.
As an improvement, the inner wall of the bottom of the furnace body at the bottom of the shunting chamber is provided with a spoiler which is obliquely arranged.
As a further improvement, the spoiler is provided with more than two channels, the height of the spoiler far away from the air blower is greater than that of the spoiler close to the air blower, one surface of the spoiler facing the air blower is a windward surface, and an included angle between the windward surface of the spoiler close to the air blower and the air supply direction is smaller than that between the windward surface of the spoiler far away from the air blower and the air supply direction.
As a further improvement, one end of the diversion chamber, which is far away from the blower, is provided with a diversion wall which is obliquely arranged.
As a further improvement, a plurality of through holes are arranged on the flow dispersing plate, and the aperture of the through hole far away from the air blower is larger than or equal to that of the through hole close to the air blower.
As further improvement, the through-hole includes the first through-hole that a plurality of apertures equal, the second through-hole that a plurality of apertures equal and the third through-hole that a plurality of apertures equal, first through-hole is close to the forced draught blower setting, the third through-hole is kept away from the forced draught blower setting, the second through-hole is located between first through-hole and the third through-hole, the aperture of first through-hole is less than the aperture of second through-hole, the aperture of second through-hole is less than the aperture of third through-hole.
Specifically, the spoiler is provided with two channels, one of the spoilers is arranged at a position corresponding to a junction of the first through hole and the second through hole, and the other spoiler is arranged at a junction of the second through hole and the third through hole.
As a further improvement, the diameter of the first through hole is 20mm, the diameter of the second through hole is 22mm, and the diameter of the third through hole is 25 mm.
As a further improvement, the hearth is far away from one end of the burner is communicated with the heat exchange tubes, the number of the rows of the heat exchange tubes is even, the two rows of the heat exchange tubes are adjacent up and down, the smoke return box is arranged at one end of the communicated heat exchange tubes, the air inlet is arranged at the position, corresponding to one end of the burner, of the hearth, the air feeder is arranged at one end, far away from the air inlet, of the flow distribution chamber, and the two air feeders are horizontally arranged side by side.
As a further improvement, six rows of heat exchange tubes are arranged, the hearth and the heat exchange tubes form a seven-return-stroke heat exchange structure, and two rows of the heat exchange tubes which are adjacent up and down are arranged in a staggered mode.
As a further improvement, the heat exchange tubes are finned tubes.
Due to the adoption of the technical scheme, the beneficial effects of the utility model are that:
the gas condensation hot air unit provided by the utility model is provided with the circulation bin, the air to be heated entering from the air inlet circulates around the furnace body, the temperature of the furnace body is higher to preheat the air to be heated, the preheated air enters the shunting chamber through the air feeder and then exchanges heat with the heat exchange tube, the heat dissipated by the furnace body is fully utilized, and the heating speed of the hot air is favorably improved; the flue gas in the hearth is discharged from the smoke discharge box through the induced draft fan from top to bottom through the heat exchange tubes, and the preheated air performs countercurrent heat exchange with the flue gas in the heat exchange tubes from bottom to top, so that the heat exchange effect and the heat exchange efficiency are improved; the flow dividing chamber disperses the preheated air to enable the preheated air to uniformly diffuse into the furnace body and exchange heat with the heat exchange tubes one by one, so that the temperature of the flue gas in the heat exchange tubes which are positioned lower is lower, the flue gas in the heat exchange tubes flows through a plurality of rows of heat exchange tubes to fully exchange heat with the air in the furnace body, the temperature reaches 20-30 ℃, and is lower than the dew point of the flue gas, so that water vapor in the flue gas is condensed, most sensible heat and latent heat in the flue gas are recovered, liquid water in the flue gas can play a role in humidifying, the emission of harmful substances in the flue gas is effectively reduced, the flue gas can be directly emitted into a greenhouse or other plant production areas, the carbon and nitrogen in the flue gas are fully utilized and.
The utility model provides a hot-blast unit of gas condensation, it is low to discharge flue gas temperature, adopts low level calorific value to calculate the thermal efficiency and can reach more than 108%, is higher than present trade level far away, and the thermal efficiency is high, and energy saving and consumption reduction effect is obvious, and is energy-concerving and environment-protective, economical and practical, safe and reliable.
The flow baffle in the flow distribution chamber plays a certain role in blocking the air supply of the air feeder, so that the air pressure in the flow distribution chamber is relatively balanced, the flow baffle is provided with through holes with different apertures to adapt to different air pressures in different areas, the aperture of the through hole in the area with high air pressure is slightly smaller, and the aperture of the through hole in the area with low air pressure is larger, so that the air in the flow distribution chamber uniformly enters the furnace body to exchange heat with the heat exchange tube.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the furnace body;
FIG. 3 is a schematic structural view of a diffuser plate;
in the attached drawing, 1-shell, 2-furnace body, 21-heat exchange bin, 3-circulation bin, 4-air inlet, 5-air outlet, 6-hearth, 7-burner, 8-heat exchange tube, 9-smoke exhaust box, 10-induced draft fan, 11-flow splitting chamber, 12-blower, 13-flow dispersing plate, 131-first through hole, 132-second through hole, 133-third through hole, 14-spoiler, 15-flow guide wall, 16-smoke return box, 17-inner clapboard and 18-electrical box.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
As shown in fig. 1 and fig. 2, the gas condensing hot air unit comprises a housing 1, a furnace body 2 is arranged in the housing 1, a circulation bin 3 arranged around the furnace body 2 is arranged between the housing 1 and the furnace body 2, an air inlet 4 is arranged near the top of the housing 1, an air outlet 5 is arranged at the top of the furnace body 2, and the air outlet 5 extends out of the housing 1;
a hearth 6 is arranged below the air outlet 5 in the furnace body 2, one end of the hearth 6 is connected with a burner 7, a heat exchange bin 21 is arranged below the hearth 6 in the furnace body 2, a plurality of heat exchange tubes which are transversely arranged are arranged in the heat exchange bin 21, a plurality of heat exchange tubes 8 are arranged in rows from top to bottom, the heat exchange tubes 8 can be particularly finned tubes to improve the heat exchange effect, of course, other heat exchange tubes can be adopted, a plurality of rows of heat exchange tubes 8 are connected in an S shape, one end of each heat exchange tube 8 between the uppermost heat exchange tube 8 and the lowermost heat exchange tube 8 is communicated with the upper row of heat exchange tubes 8, the other end of each heat exchange tube 8 is communicated with the lower row of heat exchange tubes 8, one end of the uppermost heat exchange tube 8 is communicated with the hearth 6, one end of the;
the bottom of the furnace body 2 is provided with a diversion chamber 11 below the heat exchange tube 8, the diversion chamber 11 is connected with a blower 12, the top of the diversion chamber 12 is provided with a flow dispersing plate 13, the flow dispersing plate 13 controls the condition of air flow entering the furnace body according to the air pressure conditions of different areas in the diversion chamber 11 to realize uniform air intake, the flow dispersing plate 13 in the embodiment is a plate provided with a plurality of through holes, as shown in fig. 3, of course, other structures can be used as long as the purpose of uniform flow dispersion can be realized.
In this embodiment, the spoiler 14 is obliquely arranged on the inner wall of the bottom of the furnace body 2 at the bottom of the diversion chamber 11, specifically, the spoiler 14 is provided with more than two channels, the height of the spoiler 14 far away from the air blower 12 is greater than the height of the spoiler 14 near the air blower 12, one surface of the spoiler 14 facing the air blower 12 is a windward surface, an included angle between the windward surface of the spoiler 14 near the air blower 12 and the air supply direction is smaller than an included angle between the windward surface of the spoiler 14 far away from the air blower 12 and the air supply direction, so as to block the air supply of the air blower 12 to a certain extent, so that the air pressure in the diversion chamber 11 is relatively balanced, and further, a diversion wall 15 is obliquely arranged at one end of the diversion chamber 11 far away from the air blower.
In this embodiment, the angle between the windward side and the blowing direction of the blower 12 may be adjusted to a suitable angle according to the specific situation.
In this embodiment, as shown in fig. 3, the diffuser 13 is provided with a plurality of through holes, the aperture of the through hole far away from the blower 12 is larger than or equal to the aperture of the through hole near the blower 12, so as to adapt to different air pressures in different areas, the aperture of the through hole in the area with high air pressure is slightly smaller, and the aperture of the through hole in the area with low air pressure is larger, so that the air in the diversion chamber 11 uniformly enters the furnace body 2 to exchange heat with the heat exchange tube 8, specifically, the through holes with gradually changing apertures can be adopted, but for production convenience, the through holes on the diffuser 13 in this embodiment include a plurality of first through holes 131 with equal apertures, a plurality of second through holes 132 with equal apertures, and a plurality of third through holes 133 with equal apertures, the first through holes 131 are arranged near the blower 12, the third through holes 133 are arranged far away from the blower 12, the second through holes 132 are arranged between, the aperture of the second through hole 132 is smaller than that of the third through hole 133.
Specifically, the diameter of the first through hole 131 may be set to 20mm, the diameter of the second through hole 132 may be set to 22mm, and the diameter of the third through hole 133 may be set to 25 mm.
In this embodiment, in order to improve the air intake effect of the diversion chamber 11, the spoiler 14 is disposed in cooperation with the through holes of the diffuser 13, the spoiler 14 is disposed twice, the position of the spoiler 14 corresponds to the junction of the first through hole 131 and the second through hole 132, and the spoiler 14 is disposed at the junction of the second through hole 132 and the third through hole 133.
In the embodiment, one end of the hearth 6 far away from the burner 7 is communicated with the heat exchange tubes 8, the arrangement number of the heat exchange tubes 8 is even, one end of the upper and lower adjacent rows of heat exchange tubes 8 is provided with the smoke return box 16, the smoke return box 16 can mix smoke discharged by the same row of heat exchange tubes 8 to realize smoke redistribution, the overlarge temperature difference of the smoke in the same row of heat exchange tubes 8 is avoided, dust substances in the smoke are favorably precipitated and are convenient to clean, the air inlet 4 is positioned on the shell 1 corresponding to one end of the hearth 6 far away from the burner 7, the blower 12 is positioned at one end of the diversion chamber 11 far away from the air inlet 4, the air inlet preheating stroke is effectively improved, the two blowers 12 are horizontally arranged in parallel, when one blower 12 fails and can not normally work, the other blower 12 can normally work to ensure normal air supply, especially for plant warm keeping, when one blower 12 fails, the temperature is not too low to freeze the plants.
In this embodiment, six rows of heat exchange tubes 8 are preferably arranged, the furnace 6 and the heat exchange tubes 8 form a seven-return heat exchange structure, the heat exchange stroke is long, two rows of heat exchange tubes 8 adjacent to each other are arranged in a staggered manner, the flow velocity of air is slowed down to a certain extent, and the air and the heat exchange tubes 8 can fully exchange heat.
In this embodiment, in order to make the equipment regular and convenient for transportation and installation, an inner partition 17 is provided in the casing 1 to separate a space for placing the burner 7 and the electrical box 18.
The utility model provides a gas condensation air heater unit sets up the circulation storehouse, the air to be heated that the air intake got into preheats around the furnace body circulation, utilize the heat that the furnace body scatters and disappears, be favorable to improving hot-blast speed, flue gas flow direction in the furnace is S-shaped from bottom to bottom, the air after preheating is from bottom to top to carry out the heat transfer against current with the flue gas in the heat transfer pipe, improve heat transfer effect and heat exchange efficiency, moreover, the flow distribution chamber makes the air after preheating disperse evenly and gets into the furnace body and exchange with the heat exchange tube heat extraction one by one, the heat transfer is even, make the temperature of the flue gas in the heat transfer pipe lower more, the flue gas in the heat transfer pipe flows through a plurality of heat exchange tubes and the interior air of furnace body after the heat exchange fully reaches 20-30 degrees centigrade, be less than the dew point of flue gas, make the vapor in the flue gas condense, retrieve most sensible heat, is far higher than the current industry level.
The utility model discloses liquid water in the flue gas of emission can also play the humidification effect, effectively reduces the harmful substance emission in the flue gas, can directly get into big-arch shelter or other plant production regions with the fume emission, and carbon nitrogen is changed into fertilizer in the make full use of flue gas, and the yield increasing effect is obvious.
The utility model provides a hot-blast unit of gas condensation, it is low to discharge flue gas temperature, and the thermal efficiency is high, and energy saving and consumption reduction effect is obvious, and is energy-concerving and environment-protective, economical and practical, safe and reliable.
The application provides a hot-blast unit of gas condensation mainly is applicable to the gas hot-blast furnace, but because the gas hot-blast furnace has the same principle and structure basically with the fuel hot-blast furnace, consequently, the hot-blast unit of gas condensation that this application provided also is applicable to fuel, can be the hot-blast unit of fuel condensation.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The gas condensation hot air unit is characterized by comprising a shell, wherein a furnace body is arranged in the shell, a circulating bin arranged around the furnace body is arranged between the shell and the furnace body, an air inlet is formed in the shell close to the top of the shell, an air outlet is formed in the top of the furnace body, and the air outlet extends out of the shell;
a hearth is arranged below the air outlet in the furnace body, one end of the hearth is connected with a burner, a heat exchange bin is arranged below the hearth in the furnace body, a plurality of heat exchange tubes which are transversely arranged are arranged in the heat exchange bin, the heat exchange tubes are arranged in rows from top to bottom, the heat exchange tubes are connected in an S shape, one end of the heat exchange tube in the uppermost row is communicated with the hearth, one end of the heat exchange tube in the lowermost row is connected with a smoke exhaust box, and the smoke exhaust box is connected with a draught fan;
the furnace body bottom is located the below of heat exchange tube is equipped with the flow distribution room, the flow distribution room is connected the forced draught blower, the top of flow distribution room is equipped with the board that looses.
2. The gas condensing hot air blower unit according to claim 1, wherein the inner wall of the bottom of the furnace body at the bottom of the flow dividing chamber is provided with a spoiler which is obliquely arranged.
3. The gas condensing hot air unit according to claim 2, wherein the spoiler is provided with two or more than two channels, the height of the spoiler away from the blower is greater than the height of the spoiler close to the blower, the surface of the spoiler facing the blower is windward, and the included angle between the windward surface of the spoiler close to the blower and the blowing direction is smaller than the included angle between the windward surface of the spoiler away from the blower and the blowing direction.
4. The gas-fired condensing hot air unit according to claim 2, wherein the end of the diversion chamber away from the blower is provided with an inclined diversion wall.
5. The gas-fired condensing hot air blower according to any one of claims 1 to 4 wherein said diffuser plate has a plurality of through holes, the diameter of said through hole away from said blower is greater than or equal to the diameter of said through hole close to said blower.
6. The gas-fired condensation hot air unit according to claim 5, wherein the through holes comprise a plurality of first through holes with equal aperture, a plurality of second through holes with equal aperture and a plurality of third through holes with equal aperture, the first through holes are arranged near the blower, the third through holes are arranged far away from the blower, the second through holes are arranged between the first through holes and the third through holes, the aperture of the first through holes is smaller than that of the second through holes, and the aperture of the second through holes is smaller than that of the third through holes.
7. The gas condensing hot air unit according to claim 6, wherein the diameter of the first through hole is 20mm, the diameter of the second through hole is 22mm, and the diameter of the third through hole is 25 mm.
8. The gas condensation hot air unit according to claim 1, wherein the end of the furnace far away from the burner is communicated with heat exchange tubes, the number of the heat exchange tubes is even, the end of the two adjacent rows of the heat exchange tubes, which is communicated with each other, is provided with a smoke return box, the air inlet is positioned at a position on the shell corresponding to the end of the furnace far away from the burner, the blower is positioned at one end of the diversion chamber far away from the air inlet, and the two blowers are horizontally arranged in parallel.
9. The gas-fired condensation hot air unit according to claim 8, wherein the heat exchange tubes are arranged in six rows, the hearth and the heat exchange tubes form a seven-pass heat exchange structure, and two rows of the heat exchange tubes adjacent to each other are arranged in a staggered manner.
10. The gas condensing hot air unit according to claim 1, wherein the heat exchange tubes are finned tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920661957.9U CN210267738U (en) | 2019-05-09 | 2019-05-09 | Gas condensation hot air unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920661957.9U CN210267738U (en) | 2019-05-09 | 2019-05-09 | Gas condensation hot air unit |
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| Publication Number | Publication Date |
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| CN210267738U true CN210267738U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920661957.9U Active CN210267738U (en) | 2019-05-09 | 2019-05-09 | Gas condensation hot air unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030735A (en) * | 2019-05-09 | 2019-07-19 | 山东宝嘉龙热能科技有限公司 | Condensing gas blower fan group |
| CN112833541A (en) * | 2021-03-12 | 2021-05-25 | 龙正环保股份有限公司 | Biomass gasification furnace |
-
2019
- 2019-05-09 CN CN201920661957.9U patent/CN210267738U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030735A (en) * | 2019-05-09 | 2019-07-19 | 山东宝嘉龙热能科技有限公司 | Condensing gas blower fan group |
| CN110030735B (en) * | 2019-05-09 | 2024-09-17 | 山东翔能温控设备有限公司 | Gas condensing hot air unit |
| CN112833541A (en) * | 2021-03-12 | 2021-05-25 | 龙正环保股份有限公司 | Biomass gasification furnace |
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