CN107014071B - Negative pressure type full-automatic high-speed isothermal hot air generator - Google Patents
Negative pressure type full-automatic high-speed isothermal hot air generator Download PDFInfo
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- CN107014071B CN107014071B CN201710346845.XA CN201710346845A CN107014071B CN 107014071 B CN107014071 B CN 107014071B CN 201710346845 A CN201710346845 A CN 201710346845A CN 107014071 B CN107014071 B CN 107014071B
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- air
- mixing chamber
- gas
- shell
- pressure fan
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- 238000002156 mixing Methods 0.000 claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000003584 silencer Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 56
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 12
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/025—Air heaters with forced circulation using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
- F24H9/0057—Guiding means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a negative pressure type full-automatic high-speed isothermal hot air generator, wherein a wind mixing chamber is arranged in a shell cavity, a turbulent flow outlet is arranged on one side of the wind mixing chamber, a flow guide device is connected between the wind mixing chamber and the turbulent flow outlet, a gas tail gas accelerator is arranged in the flow guide device, part of the gas tail gas accelerator extends to the outer side of the shell, a gas burner is arranged in the gas tail gas accelerator, an automatic control valve set is arranged on an external pipeline of the gas burner, a high-pressure fan is arranged on the outer side of the shell, the upper end of the high-pressure fan is connected with the external pipeline, a secondary air pipe is externally connected with the gas burner, the other end of the secondary air pipe is connected with the high-pressure fan, an automatic air door is arranged on the high-pressure fan, an air inlet is connected with the outer circumference of the shell, and the air inlet is arranged in the tangential direction of the shell. The system has high efficiency and environmental protection index of zero emission of nitrogen oxides, and has the characteristics of compact structure, less used materials, stable motion and the like. The equipment cost, the occupied space cost and the fuel consumption cost of a user are greatly reduced.
Description
Technical Field
The invention relates to a negative pressure type full-automatic high-speed isothermal hot air generator, belonging to the field of drying device manufacturing.
Background
Along with the attention of the state on environmental protection, a coal-fired drying system is gradually replaced by a gas drying system, the existing gas hot blast stove is heavy in size, large in heat absorption capacity, and unreasonable in system heat exchange structure, so that the equipment investment cost and the gas operation cost of a user are greatly increased. Meanwhile, due to the inherent structural problem, the temperature in the existing hot blast stove is overhigh during combustion, the central temperature of flame is averagely higher than 1300 ℃, and nitrogen in the air can be oxidized into nitrogen oxide due to overhigh temperature, so that the environmental pollution is greatly increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing a negative pressure type full-automatic high-speed isothermal hot air generator, which is developed by utilizing the physical characteristics of air convection heat transfer and spectral radiation heat transfer and can convert all chemical energy of natural gas into heat energy of hot air. The combustion is carried out in an environment with a temperature below 600 ℃, thereby limiting the oxidation process of nitrogen in the air. The system has high efficiency and environmental protection index of zero emission of nitrogen oxides. Meanwhile, the system has the characteristics of compact structure, less used materials, stable motion and the like. The equipment cost, the occupied space cost and the fuel consumption cost of a user are greatly reduced.
In order to solve the above problems, the specific technical scheme of the invention is as follows: the utility model provides a full-automatic high-speed isothermal hot blast generator of negative pressure formula, be equipped with the wind mixing chamber in the shell cavity, wind mixing chamber one side is equipped with the vortex export, the opposite side is connected with the drainage ware, be connected with guiding device between wind mixing chamber and the vortex export, the inside gas tail gas accelerator that is equipped with of drainage ware, gas tail gas accelerator part extends to the shell outside, the inside gas burning machine that is equipped with of gas tail gas accelerator, be equipped with the automatic control valves on the external pipeline of gas burning machine, the shell outside is equipped with high-pressure positive blower, the high-pressure positive blower upper end is connected with external pipeline, the gas burning machine is external to have the overgrate air pipe, the overgrate air pipe other end is connected with high-pressure positive blower, the last automatic air door that is equipped with of high-pressure positive blower, the outer peripheral connection of shell has the air intake, the air intake is tangential direction with the shell and arranges. The air inlet and the shell are arranged in the tangential direction and are inlets for cold air to enter the high-speed isothermal hot air generator, and meanwhile, the arrangement mode of the air inlet can forcibly change the passing direction of the cold air to form rotational flow. The rotating cold air can uniformly cool the air mixing chamber and the flow guider of the cone structure, prolong the contact time of the cold air and the hot air, reduce the air viscosity coefficient and promote the smooth operation of the system; the gas tail gas accelerator utilizes the principle of high-temperature expansion of air, when the air provided by the secondary air pipe meets the high speed generated by the combustion of the combustor, the volume of the air in the device can expand rapidly, and the cross section area of a channel of the expanded air is limited by the front end closing-in structure of the gas tail gas accelerator, so that high-speed airflow of a mixture of high-temperature flue gas and air with extremely high speed is generated, and the acceleration purpose is fulfilled.
The air mixing chamber is of a cone structure, and a plurality of vent holes are formed in the outer circumference of the air mixing chamber. The heat-absorbing structure absorbs the radiant heat generated during combustion, and when cold air passes through the small holes in the porous cone-barrel type air mixing chamber, the captured heat is converted into hot air, and the temperature of the hot air is reduced, so that the metal material used by the structure can be used in a relatively low-temperature environment for a long time.
The turbulent flow outlet, the flow diverter and the gas tail gas accelerator are all in cone structures, the turbulent flow outlet is opposite to the wide opening part of the air mixing chamber, and the narrow opening parts of the gas tail gas accelerator and the flow diverter are opposite to the narrow opening part of the air mixing chamber. The cone structure turbulent flow outlet changes the flow direction of the cooling air to form a high-speed rotational flow so as to uniformly stir the cooling air and the hot air; the vacuum that the high-speed flue gas that the drainage ware utilized "gas tail gas accelerator" to erupt caused to "horn mouth formula drainage ware" rear end gas tail gas accelerator side makes a large amount of air flow through "horn mouth formula drainage ware" reduce the temperature of flue gas and flame, and the air that passes through at a high speed simultaneously can effectual cooling "gas tail gas accelerator" the metallic structure's temperature, the continuous operation reliability under the high temperature state of metallic material of assurance.
The drainage device is connected with the shell through a support frame.
The flow guide device consists of a cold air flow guide plate and a hot air flow guide plate. The cold air guide plate is matched with the turbulence port of the cone structure to rotate the cooling air at a high speed; the hot air deflector prevents flame from escaping, while agitating the high temperature air stream sprayed at high velocity to increase the mixing time of the hot air and the cold air.
And one side end face of the secondary air pipe is connected with a secondary air pipe flow regulating valve. And adjusting the total amount of the excess air entering the gas tail gas accelerator.
The outer side wall of the high-pressure fan is connected with an air inlet silencer. Reduce the noise that high pressure positive blower produced.
The invention has the following beneficial effects: the system is developed by utilizing the physical characteristics of heat transfer through air convection and spectral radiation, and can convert all chemical energy of natural gas into heat energy of hot air. The combustion is carried out in an environment with a temperature below 600 ℃, thereby limiting the oxidation process of nitrogen in the air. The system has high efficiency and environmental protection index of zero emission of nitrogen oxides. Meanwhile, the system has the characteristics of compact structure, less used materials, stable motion and the like. The equipment cost, the occupied space cost and the fuel consumption cost of a user are greatly reduced.
Drawings
Fig. 1 is a schematic structural view of a negative pressure type full-automatic high-speed isothermal hot air generator.
Fig. 2 is a sectional view a-a of fig. 1.
The device comprises a turbulent flow outlet, a cold air guide plate 2, a hot air guide plate 3, a support frame 4, a mixed air chamber 5, a flow diverter clamp 6, an air inlet 7, a gas tail gas accelerator 8, a gas burner 9, an automatic control valve bank 10, an automatic air door 11, a secondary air pipe flow regulating valve 12, a secondary air pipe 13, a high-pressure fan 14, an air inlet silencer 15, a shell 16 and an external pipeline 17.
Detailed Description
As shown in fig. 1 and fig. 2, a negative pressure type full-automatic high-speed isothermal hot air generator, a wind mixing chamber 5 is arranged in a cavity of a housing 16, one side of the wind mixing chamber 5 is provided with a turbulent flow outlet 1, the other side of the wind mixing chamber 5 is connected with a flow diverter 6, a flow guiding device is connected between the wind mixing chamber 5 and the turbulent flow outlet 1, a gas tail gas accelerator 8 is arranged in the flow diverter 6, part of the gas tail gas accelerator 8 extends to the outer side of the housing 16, a gas burner 9 is arranged in the gas tail gas accelerator 8, an automatic control valve set 10 is arranged on an external pipeline 17 of the gas burner 9, a high-pressure fan 14 is arranged on the outer side of the housing 16, the upper end of the high-pressure fan 14 is connected with an external pipeline 17, a secondary air pipe 13 is externally connected with the gas burner 9, the other end of the secondary air pipe 13 is connected with the high-pressure fan 14, an automatic air door 11 is arranged on the high-pressure fan 14, the housing 16 is connected with an air inlet 7, and the air inlet 7 is arranged in a tangential direction with the housing 16.
The air mixing chamber 5 is of a cone structure, and a plurality of vent holes are formed in the outer circumference of the air mixing chamber 5.
The turbulent flow outlet 1, the flow diverter 6 and the gas tail gas accelerator 8 are all in a cone structure, the turbulent flow outlet 1 is opposite to the wide opening part of the air mixing chamber 5, and the narrow opening parts of the gas tail gas accelerator 8 and the flow diverter 6 are opposite to the narrow opening part of the air mixing chamber 5.
The flow diverter 6 is connected with the shell 16 through the support frame 4.
The flow guiding device consists of a cold air flow guiding plate 2 and a hot air flow guiding plate 3.
And one side end face of the secondary air pipe 13 is connected with a secondary air pipe flow regulating valve 12.
The outer side wall of the high pressure fan 14 is connected with an air inlet silencer 15.
Working process
1. When the combustor enters a combustion state, the combustor converts the gas into flame, the flame enters the 'flue gas tail gas accelerator' and flows through the 'secondary air pipe' with excess air, and simultaneously enters the 'flue gas tail gas accelerator' internal stroke high-pressure environment, and the mixed flue gas is ejected at a high speed.
2. The high-temperature air flow sprayed at high speed enters the inner stroke vacuum of the horn mouth type flow diverter, and the air from the air inlet can rapidly enter the open end of the horn mouth type flow diverter to form an injection effect due to pressure difference. The secondary part of air is mixed with the high-speed high-temperature flue gas to form secondary high-temperature hot air which enters the porous conical barrel type air mixing chamber.
3. Because the system belongs to a negative pressure operation system, a large amount of air is guided by negative pressure to flow through holes on the porous cone-barrel type air mixing chamber to enter the porous cone-barrel type air mixing chamber to be stirred and mixed with high-speed secondary high-temperature hot air to form hot air to move towards the direction of the closed flow disturbing opening. Finally, hot air with required temperature is formed and is sprayed out of an outlet of a negative pressure type full-automatic high-speed isothermal hot air generator.
What has been described above is merely a preferred embodiment of the invention. It should be noted that variations and modifications can be made by those skilled in the art without departing from the principle of the present invention, and they should also be considered as falling within the scope of the present invention.
Claims (4)
1. A negative pressure type full-automatic high-speed isothermal hot air generator is characterized in that: a wind mixing chamber (5) is arranged in a cavity of the shell (16), one side of the wind mixing chamber (5) is provided with a turbulent flow outlet (1), the other side of the wind mixing chamber is connected with a flow diverter (6), a flow diverter is connected between the wind mixing chamber (5) and the turbulent flow outlet (1), the flow diverter is composed of a cold air flow deflector (2) and a hot air flow deflector (3), a gas tail gas accelerator (8) is arranged in the flow diverter (6), part of the gas tail gas accelerator (8) extends to the outer side of the shell (16), a gas burner (9) is arranged in the gas tail gas accelerator (8), an automatic control valve set (10) is arranged on an external pipeline (17) of the gas burner (9), a high-pressure fan (14) is arranged on the outer side of the shell (16), the upper end of the high-pressure fan (14) is connected with the external pipeline (17), a secondary air pipe (13) is externally connected with the gas burner (9), and the other end of the secondary air pipe (13) is connected with the high-pressure fan (14), an automatic air door (11) is arranged on the high-pressure fan (14), an air inlet (7) is connected to the outer circumference of the shell (16), and the air inlet (7) and the shell (16) are arranged in a tangential direction; the air mixing chamber (5) is of a cone structure, and a plurality of vent holes are formed in the outer circumference of the air mixing chamber (5); the turbulent flow outlet (1), the flow diverter (6) and the gas tail gas accelerator (8) are all in a cone structure, the turbulent flow outlet (1) is opposite to the wide opening part of the air mixing chamber (5), and the narrow opening parts of the gas tail gas accelerator (8) and the flow diverter (6) are opposite to the narrow opening part of the air mixing chamber (5).
2. The negative-pressure type fully-automatic high-speed isothermal hot air generator according to claim 1, characterized in that: the drainage device (6) is connected with the shell (16) through the support frame (4).
3. The negative-pressure type fully-automatic high-speed isothermal hot air generator according to claim 1, characterized in that: and one side end face of the secondary air pipe (13) is connected with a secondary air pipe flow regulating valve (12).
4. The negative-pressure type fully-automatic high-speed isothermal hot air generator according to claim 1, characterized in that: the outer side wall of the high-pressure fan (14) is connected with an air inlet silencer (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346845.XA CN107014071B (en) | 2017-05-17 | 2017-05-17 | Negative pressure type full-automatic high-speed isothermal hot air generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346845.XA CN107014071B (en) | 2017-05-17 | 2017-05-17 | Negative pressure type full-automatic high-speed isothermal hot air generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107014071A CN107014071A (en) | 2017-08-04 |
| CN107014071B true CN107014071B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710346845.XA Active CN107014071B (en) | 2017-05-17 | 2017-05-17 | Negative pressure type full-automatic high-speed isothermal hot air generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN107014071B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324545A (en) * | 1980-09-22 | 1982-04-13 | Gladd Industries, Inc. | Recirculating heater for processing oven |
| CN201335524Y (en) * | 2008-12-31 | 2009-10-28 | 衡阳市泰和机械实业有限公司 | Energy-saving combustion gas furnace |
| CN103697584A (en) * | 2013-11-29 | 2014-04-02 | 山西新聚星锅炉有限公司 | Full-automatic direct gas-fired hot blast heating furnace |
| CN104006527A (en) * | 2014-06-06 | 2014-08-27 | 芜湖三峰节能设备有限公司 | Flue gas generator for preparing qualified drying agent through effective intelligent combustion |
| CN205843037U (en) * | 2016-06-21 | 2016-12-28 | 安徽科达洁能股份有限公司 | Flue gas air heating furnace |
| CN206755574U (en) * | 2017-05-17 | 2017-12-15 | 闫明宇 | Suction type fully automatic high-speed isothermal heat blower |
-
2017
- 2017-05-17 CN CN201710346845.XA patent/CN107014071B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324545A (en) * | 1980-09-22 | 1982-04-13 | Gladd Industries, Inc. | Recirculating heater for processing oven |
| CN201335524Y (en) * | 2008-12-31 | 2009-10-28 | 衡阳市泰和机械实业有限公司 | Energy-saving combustion gas furnace |
| CN103697584A (en) * | 2013-11-29 | 2014-04-02 | 山西新聚星锅炉有限公司 | Full-automatic direct gas-fired hot blast heating furnace |
| CN104006527A (en) * | 2014-06-06 | 2014-08-27 | 芜湖三峰节能设备有限公司 | Flue gas generator for preparing qualified drying agent through effective intelligent combustion |
| CN205843037U (en) * | 2016-06-21 | 2016-12-28 | 安徽科达洁能股份有限公司 | Flue gas air heating furnace |
| CN206755574U (en) * | 2017-05-17 | 2017-12-15 | 闫明宇 | Suction type fully automatic high-speed isothermal heat blower |
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| Publication number | Publication date |
|---|---|
| CN107014071A (en) | 2017-08-04 |
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