CN201032145Y - Venturi tube effect type pure smokeless combustion apparatus - Google Patents
Venturi tube effect type pure smokeless combustion apparatus Download PDFInfo
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- CN201032145Y CN201032145Y CNU2007200194182U CN200720019418U CN201032145Y CN 201032145 Y CN201032145 Y CN 201032145Y CN U2007200194182 U CNU2007200194182 U CN U2007200194182U CN 200720019418 U CN200720019418 U CN 200720019418U CN 201032145 Y CN201032145 Y CN 201032145Y
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- venturi tube
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Abstract
The utility model relates to a Venturi tube effect type pure smokeless combustion device. A combustion chamber is arranged above a grate; an ash chamber is arranged below the grate. A coal-adding stove door is arranged corresponding to a combustion hearth; an ash-discharging door is arranged corresponding to the ash chamber; the ash chamber is provided with a combustion-supporting vent; the top part of the combustion chamber is provided with a high-temperature flue gas outlet; a secondary combustion chamber is arranged above the high-temperature flue gas outlet; the cross section of the secondary combustion chamber is circular; the secondary combustion chamber is provided with a secondary combustion-supporting vent; the top part of the secondary combustion chamber is provided with a high-temperature gas outlet. The utility model is simple in structure, low in manufacture cost, long in service life and good in combustion effects. The device can solve the coal-fired smoky problem, realize pure smokeless emission of combustion gases, save coal resources, improve thermal efficiency and protect the environment. The utility model can be connected with various kinds of thermal equipment products to form different thermal equipment products of various types of structures.
Description
Technical field
The utility model relates to a kind of venturi tube effect type pure smokeless combustion device, belongs to industrial thermal equipment.
Background technology
Current social energy savings and environmental protection have become the important topic of human lives and scientific research.At China's coal is the main resource that people obtain heat energy; fuel more than 75% is to rely on coal; China's energy policy of China's energy cloth promulgated by the ministries or commissions of the Central Government is based on coal; yet each big city and suburb and some heavy industrial bases; various places administrative department but prohibites the burning coal; and necessary fuel oil; the mandatory energy policy of combustion gas; this energy policy of running counter to China very significantly and its anti-government's property administrative behavior of giving up as hopeless; purpose is in order to solve our environmental protection problem; be the reason that country is compelled against one's will, the way of really dealing with problems obviously be, the policy that has new science and technology and country to work out match be only right.The problem of these people's several years of having puzzled still can't resolve at current this cyberage.
Because the backwardness of worldwide combustion technology, make the very phenomenon of severe energy waste and environmental pollution of China enterprise ubiquity.According to the industry of China, the national conditions of enterprise's layout, the large enterprise that is about 20% is arranged, about 80% is small-sized and medium-sized and small enterprises, this layout is difficult to realize the sort of modularization management of developed country, so according to our national conditions, emphasis solves the clean combustion and the power-saving technology problem of coal, works out the new technology with the broken property of real reality in this field and is only a Man's world.
80% is that hand burns formula in the exclusive distribution volume in 1 year of the large-scale manufacturing enterprise of heat conducting oil boiler, the 20%th, large-scale chain-type, this is because the whole industrial structure layout of China falls behind, disperse integral layout disorderly, make that most users are small-sized or medium-sized and small enterprises, the large enterprises of those " righteous and honourable " are minority always, long-term month after month in service Dark smoke billows contaminated environment, combustion power is very low, a large amount of wastes energy, promptly not energy-conservation, not environmental protection again is exactly that these are turning round and " hardware " of the growth of the national economic value just in large-scale popularization, and again under the constant situation of GDP during the 11th Five-Year energy-conservation 20%, environmental requirement also will reach re-set target, and visible difficulty is big.
Industrial coal combustion device has essentially identical structure, and the top of fire grate is a burner hearth, and the below of fire grate is grey chamber, be provided with corresponding with burner hearth adds coal stove door, the corresponding ashpit that is provided with grey chamber, grey chamber is furnished with combustion-supporting air port, and the top of burner hearth is provided with the high-temperature flue gas outlet.At present, the what is called " new and high technology " that each cauldron enterprise group generally uses on the production line of thermal technology's products such as modern industry boiler, the main product that embodies has vertical heat conducting oil boiler, vertical hand burning water-heating boiler, vertical steam boiler etc., kiln that comprises various advanced persons etc. all is to use this combustion mode, even " on turn down the burning formula " boiler does not break away from this tactic pattern yet.In these Thermal Equipments, fire coal is made fuel, flammable effective ingredient in the bituminous coal---fugitive constituent (accounting for 30%-35%), major part all becomes dense smoke and arranges in the air by chimney, add in addition that phosphorus content is about 25% in the lime-ash, total efficiency of combustion is about 60%, and environmental pollution and energy waste are very serious, solve the pollution that caused by coal burning problem and be always the doing one's utmost problem that solves and thirst for solving of people for these years, but never solve well.
The utility model content
The purpose of this utility model is to provide a kind of venturi tube effect type pure smokeless combustion device, and is simple in structure, and cost is low; long service life, combustion efficiency is good, can solve coal-fired over-emitting black exhaust problem; realize the pure smokeless emission of burning gases, save coal resource, the protection environment.
Venturi tube effect type pure smokeless combustion device described in the utility model, the top of fire grate is a burner hearth, the below of fire grate is grey chamber, be provided with corresponding with burner hearth adds coal stove door, the corresponding ashpit that is provided with grey chamber, the ash chamber is furnished with once combustion-supporting air port, the top of burner hearth is provided with the high-temperature flue gas outlet, above the high-temperature flue gas outlet, set up the second-time burning burner hearth, the cross section of second-time burning burner hearth is rounded, the second-time burning burner hearth is provided with the combustion-supporting air port of secondary, and the top of second-time burning burner hearth is provided with the high-temperature gas outlet.
Operation principle:
Venturi tube also is Venturi tube, the sampling that in the flow measurement " jet control system " of deduster, gas, liquid and various instrument and meter, is used to measure physical parameter, it is the important component part of forming sensor, air force " lee face adsorption effect " is arranged, and we utilize " aerodynamic effects " (also claiming " Venturi tube effect ") of Venturi tube to design the utility model pure smokeless combustion device just.
The high-temperature flue gas that comes up from burner hearth, under the combustion-supporting wind action of secondary, in second-time burning burner hearth (being also referred to as " fire box "), form rotation, formation swirling flow burning, at high temperature flue gas is carried out oxygenation and mix, thereby the flammable composition in the flue gas is burnouted for a full due, this process is one at high temperature " the highly effective reaction process of carbon and oxygen ", be the clean combustion process of a coal, being in operation thoroughly to reach the operational effect of " pure smokeless ".Sufficient combustion, the thermal efficiency also significantly improves.
In the utility model:
Be the inclined-plane between the outlet of the hearth wall of second-time burning burner hearth and high-temperature flue gas and be connected, whole formation scattering is coniform, prevents the dead angle, and Venturi tube effect is more remarkable.
Also establish the combustion-supporting air port of secondary in the high-temperature flue gas exit, strengthen combustion-supporting and agitaion, promote the swirling flow burning.
In order to obtain the rotate effect of good burning gases, the tangential direction of the second-time burning burner hearth of the best corresponding circular cross section in the combustion-supporting air port of secondary.
The high-temperature gas outlet is designed to contraction mouth, can obtains better Venturi tube effect.
According to the scale situation etc., it is a plurality of that the combustion-supporting air port of secondary can distribute on the circular cross section of second-time burning burner hearth, and 2-10 suitable, and the air channel that is communicated with the combustion-supporting air port of secondary is communicated with on annular cloth wind box; In like manner, the combustion-supporting air port of secondary the second-time burning burner hearth vertically on the multilayer that also can distribute, the 2-6 layer is suitable.
Annular cloth wind box, in " between waist " formation " annular passage " of burner, all secondary combustion airs all provide wind regime by " annular passage ", the pressure of wind is provided by equipped blower fan, blower fan can connect three-phase alternating-current supply, can realize frequency control by frequency converter, finishes air quantity and regulates.
The utility model venturi tube effect type pure smokeless combustion device; simple in structure, cost is low, long service life; combustion efficiency is good; can solve coal-fired over-emitting black exhaust problem, realize the pure smokeless emission of burning gases, lingemann blackness is zero; saved coal resource; improved the thermal efficiency, protected environment again, economic benefit and obvious social benefit.
The utility model burner is as a basic fuel element, " matching " and " compatibility " is good, can connect with multiple Thermal Equipment product, form the different Thermal Equipment products of all kinds of versions, burn heat conducting oil boiler, vertical hand burning water-heating boiler, vertical steam boiler, vertical burning kiln etc. as vertical hand.
Description of drawings
The structure of Fig. 1, Venturi tube and air force schematic diagram.
Fig. 2, the utility model embodiment 1 structure and do not have the secondary combustion air theory of combustion schematic diagram in when supply.
Fig. 3, the utility model embodiment 1 structure and the secondary combustion air theory of combustion schematic diagram in when supply is arranged.
Cross-sectional structure and theory of combustion schematic diagram that Fig. 4, second-time burning hearth portion are divided.
Cross-sectional structure and theory of combustion schematic diagram that Fig. 5, the utility model embodiment 2 second-time burning hearth portion are divided.
Fig. 6, the vertical hand that utilizes the utility model to make burn heat conducting oil boiler structure and theory of combustion schematic diagram.
Fig. 7, the vertical hand burning water-heating boiler structure and the theory of combustion schematic diagram that utilize the utility model to make.
Fig. 8, the vertical steam boiler structure and the theory of combustion schematic diagram that utilize the utility model to make.
Among the figure: a, entrance b, c, contraction section d, cylindric aditus laryngis e, scattering cone f, low-pressure area g, air-flow 1, fire grate 2, coal-fired 3, add coal stove door 4, refractory lining 5, metal shell 6, insulation material 7, high-temperature flue gas 8, the combustion-supporting air channel 9 of secondary, annular cloth wind box 10, second-time burning burner hearth 11, high-temperature gas outlet 12, high-temperature gas 13, high-temperature flue gas outlet 14, burner hearth 15, ashpit 16, air channel F1, F2, combustion air B1, B2, blower fan P1, P2, P3, P4 air-flow blind area.
The specific embodiment
The utility model is described in further detail in conjunction with above-mentioned accompanying drawing.
Shown in Figure 1 is the structure and the air force principle of Venturi tube.
Inject the air-flow of certain pressure and certain flow rate from the porch of Venturi tube, air-flow is from entrance a, gradually reduced through contraction section b, c, density maximum when arriving cylindric throat d place, it is maximum that flow velocity also reaches, and air-flow g upwards sprays with cylindrical, but be close to the internal chamber wall of scattering cone e with conical form, with hollow tubaeform upwards diffusion and injection, the air force of Venturi tube that Here it is " lee face adsorption effect ".How does this phenomenon form? this is because air-flow is compressed and quickens during through the cylindric d of throat, incipient is upwards to spray with cylindrical at that moment, be exactly because spray after the acceleration of this strand air-flow, on flaring lee face, be pumped into low-pressure area, make the air-flow center of tubaeform injection also form low-pressure area f, and trend towards " vacuum ", the aerodynamic effects of Venturi tube that Here it is is called for short " Venturi tube effect ".
Fig. 2, Fig. 3, shown in Figure 4 be the utility model embodiment 1 structure and the theory of combustion.
Venturi tube effect type pure smokeless combustion device described in the utility model, the top of fire grate 1 is a burner hearth 14, the below of fire grate 1 is grey chamber, add coal stove door 3 with burner hearth 14 corresponding being provided with, the corresponding ashpit 15 that is provided with grey chamber, the ash chamber is furnished with once combustion-supporting air port, the top of burner hearth 14 is provided with high-temperature flue gas outlet 13, second-time burning burner hearth 10 is established in the top of its high-temperature flue gas outlet 13, the cross section of second-time burning burner hearth 10 is rounded, the hearth wall of second-time burning burner hearth 10 is the inclined-plane with 13 of high-temperature flue gas outlets and is connected, whole formation scattering is coniform, second-time burning burner hearth 10 is provided with the combustion-supporting air port of secondary, provide combustion air by the combustion-supporting air channel 8 of secondary, the tangential direction of the second-time burning burner hearth of the combustion-supporting air port of secondary corresponding circle shape cross section, the top of second-time burning burner hearth 10 is provided with high-temperature gas outlet 11, high-temperature gas outlet 11 is a contraction mouth, high-temperature flue gas exports 13 places and also is provided with the combustion-supporting air port of the secondary of spline structure, and the combustion-supporting air channel 8 of secondary that is communicated with the combustion-supporting air port of secondary is communicated with on annular cloth wind box 9.
In the diagram, the hearth wall of burner hearth 14 is equivalent to the air flow inlet section a of Venturi tube, the top of burner hearth 14 is equivalent to contraction section b, the c of Venturi tube, high-temperature flue gas outlet 13 is equivalent to the cylindric aditus laryngis d of Venturi tube, the coniform scattering cone e that is equivalent to of scattering that the inclined-plane that the hearth wall of second-time burning burner hearth 10 and high-temperature flue gas outlet are 13 is connected to form, the inclined-plane is the lee face of Venturi tube, and the hearth wall of second-time burning burner hearth 10 is equivalent to the extension of the end scattering cone of Venturi tube ".The utility model burner just is equivalent to a distortion " Venturi tube ", has made full use of Venturi tube effect.
Theory of combustion during no secondary combustion air supply that shown in Figure 2 is, high-temperature flue gas has air force " lee face adsorption effect ", is formed centrally low-pressure area in the air-flow of flaring lee face and tubaeform injection, has formed air-flow as shown in the figure and has distributed.
Fig. 3, shown in Figure 4 be the theory of combustion when supply of secondary combustion air is arranged, on basis shown in Figure 2, added the flow perturbation of secondary combustion air.
The course of work:
The high-temperature flue gas that comes up from burner hearth 14, under combustion-supporting, the perturbation action of secondary combustion air, in second-time burning burner hearth 10, form rotation, the swirling flow burning, at high temperature flue gas being carried out oxygenation mixes, thereby the flammable composition in the flue gas is burnouted for a full due, can thoroughly reach the operational effect of " pure smokeless ".
Shown in Figure 5 is the cross-sectional structure and the theory of combustion that the utility model embodiment 2 second-time burning hearth portion are divided, and the second-time burning burner hearth of the vertical circular cross section in the combustion-supporting air port of secondary has P1, P2, P3, P4 air-flow blind area this moment, and combustion efficiency is inferior.
Shown in Figure 6 is that the vertical hand that utilizes the utility model to make burns the heat conducting oil boiler structure and the theory of combustion, realizes good structure butt joint, helps existing product is undergone technological transformation.
Shown in Figure 7 is the vertical hand manufacture hot water Cooker structure and the theory of combustion of utilizing the utility model to make, realizes good structure butt joint, helps existing product is undergone technological transformation.
Shown in Figure 8 is the vertical steam boiler structure and the theory of combustion of utilizing the utility model to make, realizes good structure butt joint, helps existing product is undergone technological transformation.
Claims (7)
1. venturi tube effect type pure smokeless combustion device, the top of fire grate is a burner hearth, the below of fire grate is grey chamber, be provided with corresponding with burner hearth adds coal stove door, the corresponding ashpit that is provided with grey chamber, the ash chamber is furnished with once combustion-supporting air port, the top of burner hearth is provided with the high-temperature flue gas outlet, the top that it is characterized in that the high-temperature flue gas outlet is provided with the second-time burning burner hearth, the cross section of second-time burning burner hearth is rounded, the second-time burning burner hearth is provided with the combustion-supporting air port of secondary, and the top of second-time burning burner hearth is provided with the high-temperature gas outlet.
2. being the inclined-plane between venturi tube effect type pure smokeless combustion device according to claim 1, the hearth wall that it is characterized in that the second-time burning burner hearth and high-temperature flue gas outlet is connected.
3. venturi tube effect type pure smokeless combustion device according to claim 1 is characterized in that the high-temperature flue gas exit is provided with the combustion-supporting air port of secondary.
4. venturi tube effect type pure smokeless combustion device according to claim 1 is characterized in that the tangential direction of the second-time burning burner hearth of the combustion-supporting air port of secondary corresponding circle shape cross section.
5. venturi tube effect type pure smokeless combustion device according to claim 1 is characterized in that the high-temperature gas outlet is contraction mouth.
6. according to claim 1,2,3,4 or 5 described venturi tube effect type pure smokeless combustion devices, it is characterized in that the combustion-supporting air port of secondary is distributed with 2-10 on the circular cross section of second-time burning burner hearth, the air channel that is communicated with the combustion-supporting air port of secondary is communicated with on annular cloth wind box.
7. venturi tube effect type pure smokeless combustion device according to claim 6, it is characterized in that the combustion-supporting air port of secondary the second-time burning burner hearth vertically on be distributed with the 2-6 layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200194182U CN201032145Y (en) | 2007-03-13 | 2007-03-13 | Venturi tube effect type pure smokeless combustion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200194182U CN201032145Y (en) | 2007-03-13 | 2007-03-13 | Venturi tube effect type pure smokeless combustion apparatus |
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| CN201032145Y true CN201032145Y (en) | 2008-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200194182U Expired - Fee Related CN201032145Y (en) | 2007-03-13 | 2007-03-13 | Venturi tube effect type pure smokeless combustion apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637461A (en) * | 2020-06-08 | 2020-09-08 | 山东理工大学 | Combustor with beam waist type furnace structure |
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2007
- 2007-03-13 CN CNU2007200194182U patent/CN201032145Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637461A (en) * | 2020-06-08 | 2020-09-08 | 山东理工大学 | Combustor with beam waist type furnace structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 |