CN201041350Y - Venturi tube effect type pure smoke-free heat conductive oil boiler - Google Patents
Venturi tube effect type pure smoke-free heat conductive oil boiler Download PDFInfo
- Publication number
- CN201041350Y CN201041350Y CNU2007200215511U CN200720021551U CN201041350Y CN 201041350 Y CN201041350 Y CN 201041350Y CN U2007200215511 U CNU2007200215511 U CN U2007200215511U CN 200720021551 U CN200720021551 U CN 200720021551U CN 201041350 Y CN201041350 Y CN 201041350Y
- Authority
- CN
- China
- Prior art keywords
- combustion
- burner hearth
- venturi tube
- conductive oil
- air port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Incineration Of Waste (AREA)
Abstract
The utility model relates to a Venturi tube effect type pure smokeless thermal conductive oil boiler which comprises a casing, a thermal conductive oil coil pipe arranged inside the casing, and a combustion device. A thermal gas cavity is formed between the thermal conductive oil coil pipe and the combustion device, in the combustion device, a combustion boiler hearth is arranged at the upper of the fire grate, and an ash chamber is arranged at the lower part of the fire grate, a stoking fire door is arranged relative to the combustion boiler hearth, an ash discharging door is arranged relative to the ash chamber, a first combustion-supporting air port is matched with the ash chamber, a high temperature fume outlet opening is arranged on the top of the combustion boiler hearth, a second combustion boiler hearth is arranged at the upper part of the high temperature fume outlet, the transverse section of the second combustion boiler hearth is circular shaped, a second combustion-supporting air port is arranged on the second combustion boiler hearth, a high temperature gas outlet opening is arranged on the top of the second combustion boiler hearth, and the high temperature gas outlet opening is connected with the thermal gas cavity. The structure is simple, the production cost is low, the servicing life is long, the combustion effect is good, the black smoke discharging problem of coal is successfully solved, the pure smokeless discharging of the combustion gas is realized, the thermal efficiency is high, coal resource can be saved, no black smoke is discharged, the Lingeman blackness is zero, and the environment can be protected.
Description
Technical field
The utility model relates to a kind of venturi tube effect pure smokeless heat conductive oil boiler, belongs to industrial thermal equipment.
Background technology
Vertical hand burning type heat conducting oil boiler is a kind of many kind series boiler products that generally use in industrial circle, domestic each cauldron factory produces in a large number at present, and market capacity is very big, structure comprises shell, conduction oil coil pipe and burner in the shell, constitute the hot gas body cavity between conduction oil coil pipe and the burner, in the burner, 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, and the burner hearth top is provided with the high-temperature flue gas outlet, and the high-temperature flue gas that comes up from burner hearth enters the hot gas body cavity from the high-temperature flue gas outlet, by conduction oil coil pipe heating conduction oil, heated conduction oil medium spreads out of heat.This boiler combustion technology is original, backward, it is very insufficient to burn, a large amount of black smokes of emerging during operation, the flammable composition " fugitive constituent " of preciousness in the coal, account for about 30～35%, almost, be discharged in the atmosphere, cause serious atmosphere pollution by chimney all with the form of cigarette, a large amount of volatilizations of " fugitive constituent " simultaneously also can be taken away a large amount of heat energy, in order to remedy this heat loss, reach the corresponding thermal efficiency, also want in addition some coals that burn more, this tactic pattern, i.e. not environmental protection, not energy-conservation again, can't reach the energy-saving and environmental protection requirement.
Why does so this structure discharge black smoke? because following burner hearth has a large amount of flammable compositions when burning, comprise carbon particle that fugitive constituent (hydrocarbon gas, carbon monoxide) evaporation gets up, coal tar steam etc., because very light weight, be subjected to the effect of " air force " of high temperature gas flow, upwards evaporation motion fast, arrive the boiler upper body, just drum shape conduction oil coil pipe position.We know that the fundamental of completing combustion has 4: 1. necessary ignition temperature; 2. enough air capacities (oxygen); 3. good mixing; 4. abundant enough burning times.Yet at this coil pipe position, because the working medium (conduction oil) in the coil pipe will be absorbed heat in a large number, make that this position temperature is very low, this low temperature environment temperature depends on the heat conduction oil outlet temperature, the boiler user according to the needed technological temperature of various products in the workshop minimum be 120 ℃, 170～200 ℃ of middle temperature, the highest also have only 330 ℃, the ignition temperature of flue gas is more than 700 ℃, so this temperature environment is that the fugitive constituent in the flue gas is burnt, the flammable composition in the opposite high-temperature flue gas can condense in a large number in this low temperature environment and separate out, form the bigger flue dust of particle, be bonded at firmly on the coil pipe, long-pending more thick more, have a strong impact on heat-transfer effect, reduce the heat transfer efficiency of boiler, another part then through flue row to atmosphere, contaminated environment, and constantly stop up the auxiliary device of flue and back.
Therefore, this boiler just because of: 1. do not have enough ignition temperatures; 2. also very inadequate at this position oxygen; 3. the flue gas straight line rises does not have enough mixing; 4. flue gas does not have enough residence times yet.Can not satisfy 4 big key elements of completing combustion, settle finally so the discharging black smoke also just becomes, and become " chronic disease " of this equipment through and through, this is an on record global problem.
The utility model content
The purpose of this utility model is to provide a kind of venturi tube effect pure smokeless heat conductive oil boiler, and is rational in infrastructure, can solve the black fume of coal burning emission problem, realizes the pure smokeless emission of burning gases, saves coal resource, the protection environment.
Venturi tube effect pure smokeless heat conductive oil boiler described in the utility model, comprise shell, conduction oil coil pipe and burner in the shell, constitute the hot gas body cavity between conduction oil coil pipe and the burner, in the burner, 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 of its high-temperature flue gas outlet is provided with the second-time burning burner hearth, and the cross section of second-time burning burner hearth is rounded, and the second-time burning burner hearth is provided with the combustion-supporting air port of secondary, the top of second-time burning burner hearth is provided with the high-temperature gas outlet, and the high-temperature gas outlet is communicated with the hot gas body cavity.
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.
Do not wait according to the scale situation, the combustion-supporting air port of secondary can distribute a plurality of 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, also can realize frequency control by frequency converter, finishes air quantity and regulates.
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 venturi tube effect pure smokeless heat conductive oil boiler just.
" lee face adsorption effect " just because of Venturi tube effect, make and export the high concentration flue gas that comes up from high-temperature flue gas, be close on the circular inner wall of second-time burning fire box, the air-flow that forms an intermediate hollow shape distributes, yet this air-flow distributes and just in time is subjected to injecting at a high speed with tangential direction " disturbance " of the secondary combustion air of this circular distribution, make this air-flow group rotation rapidly, produce oxidizing fire fiercely, be accompanied by the strong agitation and the burning of imflammable gas and oxygen tempestuously, can be released in the chemistry of " fugitive constituent " and become heat energy and be utilized, promptly eliminated flue gas, obtained heat energy again, in this burning system, the temperature in the second-time burning fire box can be elevated to rapidly more than 1000 degree, and this has just created fabulous condition for burning more completely.Because high temperature gas flow is the spirality track route, add the high temperature in secondary fire box the inside again, the insulation effect of refractory liner is arranged again, residence time and temperature all are guaranteed.4 big key elements of completing combustion have been satisfied: 1. necessary temperature; 2. enough combustion-supporting oxygen; 3. good mixes; 4. enough residence times.Embody to such an extent that improve the whole after-flames of intact, just right, all combustible here, obtain colourless, tasteless, clean, transparent clean gas.Air-flow distribution with the rotation form at last ejects from the high-temperature gas outlet, enters the hot gas body cavity, heating conduction oil coil pipe.Sufficient combustion, thermal efficiency height.Because high temperature gas flow has inertia, rotation will continue, and the high temperature gas flow of this burst rotation has also been strengthened the heat-transfer effect with coil pipe simultaneously, has improved the thermal efficiency more.
The utility model venturi tube effect pure smokeless heat conductive oil boiler, simple in structure, cost is low; long service life; combustion efficiency is good, has solved the black fume of coal burning emission problem well, has realized the pure smokeless emission of burning gases; thermal efficiency height; save coal resource, coal saving rate reaches more than 30%, no black smoke discharging; lingemann blackness is 0, has protected environment.
Description of drawings
Fig. 1, existing heat conducting oil boiler structural representation.
The structure of Fig. 2, Venturi tube and air force schematic diagram.
Fig. 3, the utility model embodiment 1 are in conjunction with burner burning operating condition schematic diagram.
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 utility model conduction oil coil pipe are heated the operating mode schematic diagram.
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, annular cloth wind box 8, high-temperature flue gas 9, the combustion-supporting air channel 10 of secondary, second-time burning burner hearth 11, high-temperature gas outlet 12, high-temperature gas 13, conduction oil coil pipe 14, high-temperature flue gas outlet 15, burner hearth 16, ashpit 17, air channel F1, a combustion air F2, secondary 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 2 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 through aditus laryngis with cylindrical then, 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, air-flow is affixed to lee face and becomes tubaeformly, has been formed centrally low-pressure area f in the air-flow of injection, and trends towards " vacuum ", the aerodynamic effects of Venturi tube that Here it is is called for short " Venturi tube effect ".
Fig. 3, shown in Figure 4 be the utility model embodiment 1 structure and the theory of combustion.
Venturi tube effect pure smokeless heat conductive oil boiler described in the utility model, comprise metal shell 5, conduction oil coil pipe 13 and burner in the metal shell 5, constitute the hot gas body cavity between conduction oil coil pipe 13 and the burner, in the burner, the top of fire grate 1 is a burner hearth 15, the below of fire grate 1 is grey chamber, add coal stove door 3 with burner hearth 15 corresponding being provided with, the corresponding ashpit 16 that is provided with grey chamber, the ash chamber is furnished with once combustion-supporting air port, provide combustion air by air channel 17, the top of burner hearth 15 is provided with high-temperature flue gas outlet 14, above high-temperature flue gas outlet 14, be provided with second-time burning burner hearth 10, the cross section of second-time burning burner hearth 10 is rounded, 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 9 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 hearth wall of second-time burning burner hearth 10 is the inclined-plane with 14 of high-temperature flue gas outlets and is connected, 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 gas outlet 11 is communicated with the hot gas body cavity, high-temperature flue gas exports 14 places and also is provided with the combustion-supporting air port of the secondary of spline structure, and the air channel that is communicated with the combustion-supporting air port of secondary is communicated with on annular cloth wind box 7.
In the diagram, the hearth wall of burner hearth 15 is equivalent to the air flow inlet section a of Venturi tube, contraction section b, the c that is equivalent to Venturi tube tiltedly takeed at the top of burner hearth 15, high-temperature flue gas outlet 14 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 14 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 ".Burner in the utility model just is equivalent to a distortion " Venturi tube ", has made full use of Venturi tube effect.
The course of work:
The high-temperature flue gas that comes up from burner hearth 15, 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 second-time burning hearth portion is divided among the utility model embodiment 2, 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, the conduction oil coil pipe can adopt coiler solid matter winding process according to the boiler tube of the determined different-diameter of different capacity model, makes drum shape coil pipe, and the multilayer suit forms, and generally is 2 layers.Be heated in the running, the three backhaul routes walking on high-temperature gas is presented along shown in the dotted line that marks among the figure---descending---, heat-transfer effect is good, thermal efficiency height.
Claims (7)
1. venturi tube effect pure smokeless heat conductive oil boiler, comprise shell, conduction oil coil pipe and burner in the shell, constitute the hot gas body cavity between conduction oil coil pipe and the burner, in the burner, 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, and the cross section of second-time burning burner hearth is rounded, and the second-time burning burner hearth is provided with the combustion-supporting air port of secondary, the top of second-time burning burner hearth is provided with the high-temperature gas outlet, and the high-temperature gas outlet is communicated with the hot gas body cavity.
2. being the inclined-plane between venturi tube effect pure smokeless heat conductive oil boiler 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 pure smokeless heat conductive oil boiler 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 pure smokeless heat conductive oil boiler 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 pure smokeless heat conductive oil boiler 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 pure smokeless heat conductive oil boilers, 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 pure smokeless heat conductive oil boiler 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 |
|---|---|---|---|
| CNU2007200215511U CN201041350Y (en) | 2007-04-28 | 2007-04-28 | Venturi tube effect type pure smoke-free heat conductive oil boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200215511U CN201041350Y (en) | 2007-04-28 | 2007-04-28 | Venturi tube effect type pure smoke-free heat conductive oil boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041350Y true CN201041350Y (en) | 2008-03-26 |
Family
ID=39253057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200215511U Expired - Fee Related CN201041350Y (en) | 2007-04-28 | 2007-04-28 | Venturi tube effect type pure smoke-free heat conductive oil boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041350Y (en) |
-
2007
- 2007-04-28 CN CNU2007200215511U patent/CN201041350Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2864378Y (en) | Multistage multi-room gas boiler for coal gasification | |
| CN100538172C (en) | Industrial Boiler, kiln double swirl-flow combustion apparatus | |
| CN102620291A (en) | Pulverized coal decoupling combustor with low nitrogen oxide discharge and pulverized coal decoupling combustion method with low nitrogen oxide discharge | |
| CN102519037B (en) | Plasma oil-free ignition combustor | |
| CN102679390B (en) | Compound furnace arch and compound secondary air structure for cooperatively controlling generation of nitrogen oxide (NOX) | |
| CN201237236Y (en) | Composite secondary air apparatus for chain boiler combustion | |
| CN101021310A (en) | Venturi tube effect type pure smokeless combustion device | |
| CN204880674U (en) | Living beings whirlwind gasification boiler | |
| CN208186363U (en) | A kind of system for pyrolyzing and burning of smoke backflow formula | |
| CN201041350Y (en) | Venturi tube effect type pure smoke-free heat conductive oil boiler | |
| CN202303348U (en) | Vertical powder burning industrial boiler with top combustor spraying downwards | |
| CN102818247B (en) | Efficient steam boiler for gasification and combined combustion of pulverized coal | |
| CN201059620Y (en) | Venturi tube effect type pure smokeless vertical type steam boilers | |
| CN100520216C (en) | Flow guiding tapering shape pure smokeless vertical type water heater boiler | |
| CN201059614Y (en) | Venturi tube effect type pure smokeless vertical type water heater boiler | |
| CN201059539Y (en) | Flow guiding tapering shape pure smokeless vertical type steam boilers | |
| CN101097088A (en) | Venturi-tube effect type pure smokeless vertical type water heater boiler | |
| CN100520169C (en) | Conical guide smokeless vertical steam boiler | |
| CN201106842Y (en) | Lustration combustion boiler | |
| CN206846724U (en) | A kind of horizontal incinerator | |
| CN101050887A (en) | Venturi tube effect pure smokeless heat conductive oil boiler | |
| CN201041351Y (en) | Diversion cone type pure smoke-free heat conductive oil boiler | |
| CN201318857Y (en) | Energy-saving environment-friendly grain drying device | |
| CN201310877Y (en) | Boiler burning chamber capable of intensifying flume burning | |
| CN201093537Y (en) | Flow guiding taper type pure smokeless vertical type hot water boiler |
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: 20080326 |