CN103388815A - Horizontal type triple-pass chain-grate boiler combusting coal and biomass fuel - Google Patents
Horizontal type triple-pass chain-grate boiler combusting coal and biomass fuel Download PDFInfo
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- CN103388815A CN103388815A CN2013103671624A CN201310367162A CN103388815A CN 103388815 A CN103388815 A CN 103388815A CN 2013103671624 A CN2013103671624 A CN 2013103671624A CN 201310367162 A CN201310367162 A CN 201310367162A CN 103388815 A CN103388815 A CN 103388815A
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Abstract
The invention relates to a horizontal type triple-pass chain-grate boiler combusting coal and biomass fuel, wherein punching is not carried out on tube plates at two ends of a boiler barrel, smoke tubes do not pass through the tube plates at two ends of the boiler barrel, and the structural form of a built-in furnace tube or a built-in double-elbow smoke tube or a single straight smoke tube is reset, so that the purpose of arranging a triple-pass smoke channel in the boiler barrel is achieved. The internal rear arch of the hearth is formed by adopting a full-steel-tube structure, two arch-shaped steel tubes with higher front parts and lower rear parts are collecting boxes, and four ends at the front and the back are welded with longitudinal collecting boxes on the left and the right. A plurality of or dozens of steel tubes bent slightly in the middle are adopted for longitudinal welding connection between the two arch-shaped steel tubes with higher front parts and lower rear parts, and fins are adopted for welding connection between tubes of steel tubes connected longitudinally, so as to form a complete rear arch; the bottom of the complete rear arch is cast with a protection layer with corresponding thickness by using high temperature resistant refractory cement, thus not only playing a role of protection, but also playing a role of radiation combustion support on fuel not combusted completely at the bottom of the arch. An ascending tube bundle is arranged on longitudinal connecting tubes of the steel rear arch, so that the thermal efficiency of the boiler is improved. The horizontal type triple-pass chain-grate boiler combusting coal and biomass fuel has the advantages that the volume, the weight and the transportation expense are reduced, and oven is not needed after installation.
Description
Technical field
The present invention relates to a kind of boiler, particularly the horizontal three backhaul chain-grate boilers of a kind of fire coal, biomass-burning fuel.
Background technology
The structural shape of traditional chain-grate boiler, all adopt the intensive punching of drum front and back tube sheet, in wear smoke pipe, the right and left is arranged inside and outside water screen tube, lays fire clay on interior water screen tube, form Eight characters flue (two return), build forward and backward arch by laying bricks or stones in burner hearth, build rear wall by laying bricks or stones, flue gas in burner hearth is introduced two return Eight characters flue, passing through external front smoke box, flue gas in Eight characters flue is introduced drum internal flue (the 3rd backhaul) discharge out of the furnace, by this version, to reach the purpose of arranging the backhaul passage and arranging the backhaul heating surface.But this structure, high-temperature region are difficult to arrange in a large number heating surface, and the heating surface utilization rate is low, and the thermal efficiency is low.The chain-grate boiler of traditional structure, the bodily form is large, and the overall steel consumption is large, and refractory material consumes large, and this body weight is large, and cost of transportation is large, before product puts into operation, also needs long-time baker, and its baker is with thousand yuan at least, and tens thousand of units do not wait at most.
Summary of the invention
The technical problem to be solved in the present invention is for the deficiencies in the prior art, has proposed a kind of boiler output, raising boiler thermal output, reduced volume, the fire coal of weight reduction, horizontal three backhaul chain-grate boilers of biomass-burning fuel of improving.
the technical problem to be solved in the present invention is achieved through the following technical solutions, a kind of fire coal, the horizontal three backhaul chain-grate boilers of biomass-burning fuel, be provided with body of heater, body of heater comprises drum and burner hearth, be provided with the chain conveyor of transfer the fuel below burner hearth, burner hearth comprises the vertical header in two of left and right that is located at the drum below, each vertical header is all joined by inside and outside two-layer water screen tube and drum, connect and compose inside and outside tube wall wall by fin between the tube and tube of every layer of water screen tube, passage between the internal layer water screen tube of two vertical headers forms i.e. the first return flue in combustion chamber, passage between inside and outside two-layer water screen tube is the second return flue, be provided with the 3rd return flue in drum, the place ahead of the first return flue is provided with face arch, the middle part of the first return flue is provided with rear arch, be the burning aditus laryngis between face arch and rear arch, rear arch afterbody below is provided with ash dropped unit and deslagging device, the internal layer water screen tube at rear arch rear portion is provided with the passage that communicates with the second return flue, be characterized in: described rear arch is provided with front high arch form collecting box pipe and rear low arch form collecting box pipe, the two ends of front high arch form collecting box pipe and afterwards the two ends of low arch form collecting box pipe join with the vertical header in two of left and right respectively, connect by some longitudinal pipes between front high arch form collecting box pipe and rear low arch form collecting box pipe, weld by fin the arch face that connects and composes rear arch between the pipe pipe of longitudinal pipe, lower surface at arch face is provided with fire-resistant mud layer, rising tube bank by solid matter between longitudinal pipe above arch face and drum is connected, intrafascicular of the tedge of solid matter is provided with the maintenance deashing passage that arranges by cross above arch face, be connected with transverse tube of some ends between two the vertical headers in the left and right, rear of rear arch, end transverse tube upwards is connected with drum by some vertical ducts, connect and compose rear tube wall wall by fin between the pipe pipe of last row's vertical duct, be provided with the some blowing pipes of aiming at rear arch arch face top on rear tube wall wall, interior, in the middle of the bottom of outer tube wall wall and afterbody below is provided with medianly zygomorphic side-blown ash pipe, the left and right sides at rear arch and burning aditus laryngis all is symmetrically arranged with secondary air channel, secondary air channel all passes outwards through inside and outside tube wall wall and is connected with the secondary air channel header.
The technical problem to be solved in the present invention can also be come further to realize by the following technical programs, described drum is built-in liner structure, flue before and after rear and front end in drum is provided with, crossing smoke pipe by some the 3rd backhauls between forward and backward flue joins, front flue communicates with the second return flue, and rear flue and pipe join.
The technical problem to be solved in the present invention can also be come further to realize by the following technical programs, described drum is built-in left and right band double bend fume tube type structure, drum is provided with left and right the 3rd backhaul smoke pipe, the front end of the 3rd backhaul smoke pipe communicates with the second return flue by elbow, and the rear end of the 3rd backhaul smoke pipe is passed the drum rear smoke box outer with being located at drum and joined.
the technical problem to be solved in the present invention can also be come further to realize by the following technical programs, described drum is built-in single vertical fume tube type structure, open eccentric orfice on the flat-plate closure of the front and back of drum, and by eccentric orfice straight smoke pipe of vertical assembling in drum, be the 3rd return flue, the rear and front end of straight smoke pipe is connected with the front and back flat-plate closure weldering of drum respectively, the prolongation collar extension of straight smoke pipe prosopyle, the flange closure plate is housed, and seal, straight smoke pipe deutostoma extends to outside drum and pipe joins, front portion at straight smoke pipe, two short smoke pipes of splayed are housed, short smoke pipe communicates with the second return flue.
The present invention compared with prior art, drum two tube sheet does not punch, does not wear smoke pipe, redesign the version of built-in flue or built-in double bend smoke pipe or single straight smoke pipe, and, by this structural shape, reach the purpose of arranging three backhaul exhaust gases passes in drum.Without external front smoke box, the two return flue is not laid fire clay, without laying fireproof bricks rear arch, wall without issue, use the steel pipe manufacturing rear arch, on vertical tube connector of steel rear arch, arrange the tedge tube bank, reach and arrange in a large number that in the burner hearth high-temperature region width penetrates heating surface, improve boiler output, improve boiler thermal output.Reduced volume, weight reduction, need not baker after minimizing freight, installation.
Description of drawings
Fig. 1 is structure diagram of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the top view of body of heater;
Fig. 4 is the second return flue schematic diagram of body of heater;
Fig. 5 is the tedge binding composition of rear arch arch face top solid matter;
Fig. 6 is the structure chart of rear arch;
Fig. 7 is the top view of Fig. 6;
Fig. 8 is that A-A of Fig. 6 is to view;
Fig. 9 is built-in liner barrel structure figure;
Figure 10 is built-in left and right band double bend fume tube type barrel structure figure;
Figure 11 is that B-B of Figure 10 is to view;
Figure 12 is built-in single vertical fume tube type barrel structure figure;
Figure 13 is that C-C of Figure 12 is to view.
The specific embodiment
The horizontal three backhaul chain-grate boilers of a kind of fire coal, biomass-burning fuel, boiler structure comprises the chain base of bottom, and the air compartment of base bottom and air controller, the air-blast device of upper fuel-device, chain drive, adjusting device and the afterbody of front end.
Base is provided with body of heater, and body of heater comprises drum 3 and burner hearth, below the forward and backward position of drum 3, is provided with symmetrical several down-comers.Inner also be provided with water feed apparatus, blowdown apparatus, in the front portion of drum, be provided with water level device, top is provided with escape pipe and manhole device, bottom is provided with blow-off pipe, forms complete drum internal structure external structure.
be provided with the chain conveyor 1 of transfer the fuel below burner hearth, burner hearth comprises the vertical header 11 in two of left and right that is located at drum 3 belows, each vertical header is all by inside and outside two-layer water screen tube 8, 9 join with drum 3, connect and compose inside and outside tube wall wall by fin between the tube and tube of every layer of water screen tube, passage between the internal layer water screen tube 9 of two vertical headers forms i.e. the first return flue in combustion chamber, passage between inside and outside two-layer water screen tube is the second return flue 7, be provided with the 3rd return flue 5 in drum 3, the place ahead of the first return flue is provided with face arch 2, the middle part of the first return flue is provided with rear arch 4, be the burning aditus laryngis between face arch and rear arch, rear arch afterbody below is provided with ash dropped unit and deslagging device, the internal layer water screen tube at rear arch 4 rear portions is provided with the passage 23 that communicates with the second return flue.Need not to lay any fire clay.Both form independently two return passage, strengthened again the heating surface of two return.
Outlet flue and the economizer of the 3rd return flue join, and, by the heat absorption of economizer, improve the feed temperature of boiler, further increase energy-saving effect, connect dust arrester in the lower end of economizer, to reach the environmental protection purpose.Dust arrester connects air-introduced machine, and remaining flue gas is discharged by chimney.
Described rear arch 4 is provided with front high arch form collecting box pipe 12 and rear low arch form collecting box pipe 14; the two ends of front high arch form collecting box pipe and afterwards the two ends of low arch form collecting box pipe join with the vertical header 11 in two of left and right respectively; connect by some longitudinal pipes 13 between front high arch form collecting box pipe and rear low arch form collecting box pipe; weld by fin the arch face that connects and composes rear arch between the pipe pipe of longitudinal pipe 13; lower surface at arch face is provided with fire-resistant mud layer 15; the existing protective effect of fire-resistant mud layer 15, also have the combustion-supporting effect of downward thermal radiation.
Small-bore rising tube bank 10 by solid matter between longitudinal pipe above arch face 13 and drum 3 is connected, and small-bore rising tube bank 10 arranges ten numbers and arranges or tens of rows.Intrafascicular of the tedge of solid matter is provided with the maintenance deashing passage 22 that arranges by cross above arch face, be connected with transverse tube of some ends between two the vertical headers in the left and right, rear of rear arch, end transverse tube upwards is connected with drum by some vertical ducts, connect and compose rear tube wall wall by fin between the pipe pipe of last row's vertical duct, be provided with the some blowing pipes 24 of aiming at rear arch arch face tops on rear tube wall wall, blowing pipe 24 by header with blow grey air blast and be connected.Can be in the situation that not blowing out, deashing regularly, to guarantee the high efficiency boiler operation.
Be provided with medianly zygomorphic side-blown ash pipe 21 in the middle of the bottom of inside and outside tube wall wall and below afterbody, the left and right sides at rear arch 4 and burning aditus laryngis all is symmetrically arranged with secondary air channel 6, and secondary air channel 6 all passes outwards through inside and outside tube wall wall and is connected with the secondary air channel header.Oxygen supply air distribution during with the assurance biomass fuel combustion.Guarantee that biomass fuel can fully burn.
Boiler body on the chain base has the integral heat insulation layer, and the external packing layer arranges.And in the boiler side, the external packing layer outside be provided with the rising staircase, top is provided with operating platform and platform guardrail.
Described drum 3 is built-in liner structure, flue 16,18 before and after rear and front end in drum is provided with, before and after the flue structure that is that the front part is long and the back is short, crossing smoke pipe 17 by some the 3rd backhauls between forward and backward flue joins, front flue 16 communicates with the second return flue, and rear flue 18 joins with pipe.Respectively have the eccentric orfice of corresponding size on the flat head of the front and back of drum 3, the forward and backward collar extension of front and back flue is connected with the front and back flat head weldering of drum.The prolongation of front flue, be equipped with the flange closure plate, and seal (the disassemble flange can be done maintenance), and rear courage cylinder extends corresponding length and is equipped with the circular flange, i.e. smoke three-pass outlet, and the collar extension of flange is connected with economizer.The not intensive punching of the forward and backward flat-plate closure of horizontal boiler drum, do not wear the smoke pipe of One's name is legion, reduce the material thickness of flat-plate closure, save cost.Technique is simple, easily makes.
Described drum 3 is built-in left and right band double bend fume tube type structure, drum 3 is provided with left and right the 3rd backhaul smoke pipe 19, the front end of the 3rd backhaul smoke pipe 19 communicates with the second return flue 7 by elbow, and the rear end of the 3rd backhaul smoke pipe is passed the drum rear smoke box outer with being located at drum and joined.
Not perforate on the front head of drum, open diplopore on rear head, the symmetrical two band elbow smoke pipes of assembling in drum, elbow is at the front end of smoke pipe, and the internal orifice of elbow is connected with the straight smoke pipe weldering in drum, and collar extension is connected with the drum weldering,, to form three backhaul gas approach, be also the two return exhanst gas outlet.The weldering of the end of the 3rd backhaul smoke pipe and the rear head of drum is connected, then after being welded on rear head smoke box, two smoke orifices are in rear smoke box, rear smoke box collar extension is welded with rectangular flange (being that smoke three-pass exports), flange port is connected with economizer.For little tonnage boiler uses, technique is simple, easily makes.
Described drum is built-in single vertical fume tube type structure, open eccentric orfice on the flat-plate closure of the front and back of drum 3, and by eccentric orfice straight smoke pipe 20 of vertical assembling in drum, be the 3rd return flue, the rear and front end of straight smoke pipe 20 is connected with the front and back flat-plate closure weldering of drum respectively, the prolongation collar extension of straight smoke pipe prosopyle, the flange closure plate is housed, and seal, straight smoke pipe deutostoma extends to outside drum and pipe joins, front portion at straight smoke pipe, two short smoke pipes of splayed are housed, and short smoke pipe communicates with the second return flue.For less tonnage boiler uses, technique is simpler, easily makes.
The present invention adopts the all-steel-pipe structure to form rear arch in burner hearth, rear arch be designed to front height afterwards low two arch form steel pipes be header, the four-head before and after collecting box pipe welds and is connected with the vertical header in left and right.In the middle of two arch form collecting box pipes low after front height; vertically weld connection with the little curved several or ten several steel pipes of Intermediate Gray; and connect with the fin weldering between the pipe pipe of the steel pipe that vertically connects; to form complete rear arch; the protective layer of respective thickness is built in the bottom of complete rear arch with resistant to elevated temperatures refractory cement, existing protective effect can be played width to the uncombusted fuel at the arch end again and penetrate combustion-supporting effect.
Claims (4)
1. fire coal, the horizontal three backhaul chain-grate boilers of biomass-burning fuel, be provided with body of heater, body of heater comprises drum and burner hearth, be provided with the chain conveyor of transfer the fuel below burner hearth, burner hearth comprises the vertical header in two of left and right that is located at the drum below, each vertical header is all joined by inside and outside two-layer water screen tube and drum, connect and compose inside and outside tube wall wall by fin between the tube and tube of every layer of water screen tube, passage between the internal layer water screen tube of two vertical headers forms i.e. the first return flue in combustion chamber, passage between inside and outside two-layer water screen tube is the second return flue, be provided with the 3rd return flue in drum, the place ahead of the first return flue is provided with face arch, the middle part of the first return flue is provided with rear arch, be the burning aditus laryngis between face arch and rear arch, rear arch afterbody below is provided with ash dropped unit and deslagging device, the internal layer water screen tube at rear arch rear portion is provided with the passage that communicates with the second return flue, it is characterized in that: described rear arch is provided with front high arch form collecting box pipe and rear low arch form collecting box pipe, the two ends of front high arch form collecting box pipe and afterwards the two ends of low arch form collecting box pipe join with the vertical header in two of left and right respectively, connect by some longitudinal pipes between front high arch form collecting box pipe and rear low arch form collecting box pipe, weld by fin the arch face that connects and composes rear arch between the pipe pipe of longitudinal pipe, lower surface at arch face is provided with fire-resistant mud layer, rising tube bank by solid matter between longitudinal pipe above arch face and drum is connected, intrafascicular of the tedge of solid matter is provided with the maintenance deashing passage that arranges by cross above arch face, be connected with transverse tube of some ends between two the vertical headers in the left and right, rear of rear arch, end transverse tube upwards is connected with drum by some vertical ducts, connect and compose rear tube wall wall by fin between the pipe pipe of last row's vertical duct, be provided with the some blowing pipes of aiming at rear arch arch face top on rear tube wall wall, interior, in the middle of the bottom of outer tube wall wall and afterbody below is provided with medianly zygomorphic side-blown ash pipe, the left and right sides at rear arch and burning aditus laryngis all is symmetrically arranged with secondary air channel, secondary air channel all passes outwards through inside and outside tube wall wall and is connected with the secondary air channel header.
2. the horizontal three backhaul chain-grate boilers of fire coal according to claim 1, biomass-burning fuel, it is characterized in that: described drum is built-in liner structure, flue before and after rear and front end in drum is provided with, crossing smoke pipe by some the 3rd backhauls between forward and backward flue joins, front flue communicates with the second return flue, and rear flue and pipe join.
3. the horizontal three backhaul chain-grate boilers of fire coal according to claim 1, biomass-burning fuel, it is characterized in that: described drum is built-in left and right band double bend fume tube type structure, drum is provided with left and right the 3rd backhaul smoke pipe, the front end of the 3rd backhaul smoke pipe communicates with the second return flue by elbow, and the rear end of the 3rd backhaul smoke pipe is passed the drum rear smoke box outer with being located at drum and joined.
4. fire coal according to claim 1, the horizontal three backhaul chain-grate boilers of biomass-burning fuel, it is characterized in that: described drum is built-in single vertical fume tube type structure, open eccentric orfice on the flat-plate closure of the front and back of drum, and by eccentric orfice straight smoke pipe of vertical assembling in drum, be the 3rd return flue, the rear and front end of straight smoke pipe is connected with the front and back flat-plate closure weldering of drum respectively, the prolongation collar extension of straight smoke pipe prosopyle, the flange closure plate is housed, and seal, straight smoke pipe deutostoma extends to outside drum and pipe joins, front portion at straight smoke pipe, two short smoke pipes of splayed are housed, short smoke pipe communicates with the second return flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310367162.4A CN103388815B (en) | 2013-08-22 | 2013-08-22 | Horizontal type triple-pass chain-grate boiler combusting coal and biomass fuel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310367162.4A CN103388815B (en) | 2013-08-22 | 2013-08-22 | Horizontal type triple-pass chain-grate boiler combusting coal and biomass fuel |
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| CN103388815B CN103388815B (en) | 2014-11-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100961A (en) * | 2014-07-25 | 2014-10-15 | 仲伟军 | Horizontal coal-fired and biomass-fired chain boiler |
| CN104976612A (en) * | 2015-07-23 | 2015-10-14 | 仲伟军 | Horizontal biomass-fired chain boiler |
| CN107166716A (en) * | 2017-07-19 | 2017-09-15 | 长春鸿鑫热能有限公司 | The dust removal integrated small-sized biomass normal-pressure hot-water boiler of combustion heat-exchange |
| CN107327826A (en) * | 2017-08-17 | 2017-11-07 | 仲伟军 | Horizontal single drum uses fuel boiler |
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| CN202204144U (en) * | 2011-07-28 | 2012-04-25 | 山西奥通环保自动锅炉有限公司 | Grate boiler burning coal and biomass fuels |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100961A (en) * | 2014-07-25 | 2014-10-15 | 仲伟军 | Horizontal coal-fired and biomass-fired chain boiler |
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| CN104976612B (en) * | 2015-07-23 | 2017-10-03 | 仲伟军 | Horizontal biomass-burning chain-grate boiler |
| CN107166716A (en) * | 2017-07-19 | 2017-09-15 | 长春鸿鑫热能有限公司 | The dust removal integrated small-sized biomass normal-pressure hot-water boiler of combustion heat-exchange |
| CN107327826A (en) * | 2017-08-17 | 2017-11-07 | 仲伟军 | Horizontal single drum uses fuel boiler |
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| Publication number | Publication date |
|---|---|
| CN103388815B (en) | 2014-11-05 |
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