CN103388815B - 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 PDF

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CN103388815B
CN103388815B CN201310367162.4A CN201310367162A CN103388815B CN 103388815 B CN103388815 B CN 103388815B CN 201310367162 A CN201310367162 A CN 201310367162A CN 103388815 B CN103388815 B CN 103388815B
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arch
pipe
drum
tube
flue
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CN103388815A (en
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仲伟军
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仲伟军
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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

The horizontal three backhaul chain-grate boilers of fire coal, biomass-burning fuel
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, inside wear smoke pipe, the right and left is arranged inside and outside water screen tube, on interior water screen tube, is laid fire clay, form Eight characters flue (two return), in burner hearth, build forward and backward arch by laying bricks or stones, build rear wall by laying bricks or stones, flue gas in burner hearth is introduced to two return Eight characters flue, passing through external front smoke box, flue gas in Eight characters flue is introduced to drum internal flue (the 3rd backhaul) and discharge out of the furnace, by this version, to reach the object of arranging backhaul passage and arranging backhaul heating surface.But this structure, high-temperature region is difficult to arrange in a large number heating surface, and 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 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 are not etc. 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 coal-fired, 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, below burner hearth, be provided with the chain conveyor of transfer the fuel, burner hearth comprises the vertical header in two of left and right that is located at drum below, each vertical header is all joined by inside and outside two-layer water screen tube and drum, between the tube and tube of every layer of water screen tube, connect and compose inside and outside tube wall wall by fin, 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, in drum, be provided with the 3rd return flue, the front of the first return flue is provided with face arch, the middle part of the first return flue is provided with rear arch, it between face arch and rear arch, is burning aditus laryngis, 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 communicating 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 the two ends of front high arch form collecting box pipe and rear low arch form collecting box pipe join with the vertical header in two of left and right respectively, between front high arch form collecting box pipe and rear low arch form collecting box pipe, connect by some longitudinal pipes, between the pipe pipe of longitudinal pipe, weld by fin the arch face that connects and composes rear arch, be provided with fire-resistant mud layer at the lower surface of arch face, rising tube bank by solid matter between longitudinal pipe above arch face and drum is connected, above arch face, intrafascicular of the tedge of solid matter is provided with the maintenance deashing passage arranging by cross, between two the vertical headers in the left and right, rear of rear arch, be connected with transverse tube of some ends, end transverse tube is upwards connected with drum by some vertical ducts, between the pipe pipe of last row's vertical duct, connect and compose rear tube wall wall by fin, on rear tube wall wall, be provided with the some blowing pipes of aiming at rear arch arch face top, 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 is all symmetrically arranged with secondary air channel, secondary air channel all passes outwards through inside and outside tube wall wall and is connected with 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, between forward and backward flue, crossing smoke pipe by some the 3rd backhauls 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 joins through drum and the rear smoke box being located at outside drum.
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 longitudinal fume tube type structure, on the flat-plate closure of the front and back of drum, open eccentric orfice, and be the 3rd return flue by eccentric orfice straight smoke pipe of longitudinal assembling in drum, the rear and front end of straight smoke pipe respectively with soldered the connecing of front and back flat-plate closure of drum, the prolongation collar extension of straight smoke pipe prosopyle, flange closure plate is housed, and seal, straight smoke pipe deutostoma extends to outside drum and pipe joins, in the front portion of 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 object of arranging three backhaul exhaust gases passes in drum.Without external front smoke box, two return flue is not laid fire clay, without laying fireproof bricks rear arch, wall without issue, use steel pipe manufacturing rear arch, on longitudinal tube connector of steel rear arch, arrange tedge tube bank, reach and arrange in a large number that in burner hearth high-temperature region width penetrates heating surface, improve boiler output, improve boiler thermal output.Reduced volume, weight reduction, reduce freight, install after without baker.
Brief description of the 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 longitudinal fume tube type barrel structure figure;
Figure 13 is that C-C of Figure 12 is to view.
Detailed description of the invention
Horizontal three backhaul chain-grate boilers for 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 be also provided with water feed apparatus, blowdown apparatus, be provided with water level device in the front portion of drum, top is provided with escape pipe and manhole device, bottom is provided with blow-off pipe, forms complete drum internal structure external structure.
Below burner hearth, be provided with the chain conveyor 1 of transfer the fuel, 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, between the tube and tube of every layer of water screen tube, connect and compose inside and outside tube wall wall by fin, 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, in drum 3, be provided with the 3rd return flue 5, the front 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, it between face arch and rear arch, is burning aditus laryngis, 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 communicating with the second return flue.Without laying 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, to reach environmental protection object in the lower end of economizer.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 the two ends of front high arch form collecting box pipe and rear low arch form collecting box pipe join with the vertical header 11 in two of left and right respectively; between front high arch form collecting box pipe and rear low arch form collecting box pipe, connect by some longitudinal pipes 13; between the pipe pipe of longitudinal pipe 13, weld by fin the arch face that connects and composes rear arch; be provided with fire-resistant mud layer 15 at the lower surface of arch face; the existing protective effect of fire-resistant mud layer 15, also has 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 number row or tens of rows.Above arch face, intrafascicular of the tedge of solid matter is provided with the maintenance deashing passage 22 arranging by cross, between two the vertical headers in the left and right, rear of rear arch, be connected with transverse tube of some ends, end transverse tube is upwards connected with drum by some vertical ducts, between the pipe pipe of last row's vertical duct, connect and compose rear tube wall wall by fin, on rear tube wall wall, be provided with some and aim at the blowing pipes 24 on rear arch arch face tops, blowing pipe 24 by header with blow grey air blast and be connected.Can be the in the situation that of not blowing out, deashing regularly, to guarantee high efficiency boiler operation.
In the middle of the bottom of inside and outside tube wall wall and below afterbody, be provided with medianly zygomorphic side-blown ash pipe 21, the left and right sides at rear arch 4 and burning aditus laryngis is all 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 secondary air channel header.Oxygen supply air distribution during with guarantee biomass fuel combustion.Guarantee that biomass fuel can fully burn.
Boiler body on chain base has integral heat insulation layer, and external packing layer arranges.And in boiler side, external packing layer outside be provided with 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, between forward and backward flue, crossing smoke pipe 17 by some the 3rd backhauls joins, front flue 16 communicates with the second return flue, and rear flue 18 joins with pipe.On the flat head of the front and back of drum 3, respectively have the eccentric orfice of corresponding size, soldered the connecing of front and back flat head of the forward and backward collar extension of front and back flue and drum.The prolongation of front flue, is equipped with flange closure plate, and seals (disassemble flange can be done maintenance), and rear courage cylinder extends corresponding length and is equipped with circular flange, i.e. smoke three-pass outlet, and the collar extension of flange is connected with economizer.The not intensive punching of 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, cost-saving.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 joins through drum and the rear smoke box being located at outside drum.
Not perforate on the front head of drum, opens diplopore on rear head, the symmetrical two band elbow smoke pipes of assembling in drum, elbow is at the front end of smoke pipe, soldered the connecing of straight smoke pipe in the internal orifice of elbow and drum, and collar extension and drum are soldered to be connect, to form three backhaul gas approach, it is also two return exhanst gas outlet.The 3rd end of backhaul smoke pipe and the rear head of drum is soldered connects, then smoke box after being welded on rear head, two smoke orifices are in rear smoke box, and rear smoke box collar extension is welded with rectangular flange (being smoke three-pass outlet), and flange port is connected with economizer.For little tonnage boiler uses, technique is simple, easily makes.
Described drum is built-in single longitudinal fume tube type structure, on the flat-plate closure of the front and back of drum 3, open eccentric orfice, and be the 3rd return flue by eccentric orfice straight smoke pipe 20 of longitudinal assembling in drum, the rear and front end of straight smoke pipe 20 respectively with soldered the connecing of front and back flat-plate closure of drum, the prolongation collar extension of straight smoke pipe prosopyle, flange closure plate is housed, and seal, straight smoke pipe deutostoma extends to outside drum and pipe joins, in the front portion of 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 rear arch in all-steel-pipe structure composition burner hearth, and it is header that rear arch is designed to low two arch form steel pipes after front height, and the four-head before and after collecting box pipe indulges with left and right that header is soldered to be connect.After front height in the middle of low two arch form collecting box pipes; with longitudinally soldered connecing of the micro-curved several or ten several steel pipes of Intermediate Gray; and connect with fin is soldered between the pipe pipe of the steel pipe longitudinally connecting; 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. a 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, below burner hearth, be provided with the chain conveyor of transfer the fuel, burner hearth comprises the vertical header in two of left and right that is located at drum below, each vertical header is all joined by inside and outside two-layer water screen tube and drum, between the tube and tube of every layer of water screen tube, connect and compose inside and outside tube wall wall by fin, 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, in drum, be provided with the 3rd return flue, the front of the first return flue is provided with face arch, the middle part of the first return flue is provided with rear arch, it between face arch and rear arch, is burning aditus laryngis, 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 communicating 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 the two ends of front high arch form collecting box pipe and rear low arch form collecting box pipe join with the vertical header in two of left and right respectively, between front high arch form collecting box pipe and rear low arch form collecting box pipe, connect by some longitudinal pipes, between the pipe pipe of longitudinal pipe, weld by fin the arch face that connects and composes rear arch, be provided with fire-resistant mud layer at the lower surface of arch face, rising tube bank by solid matter between longitudinal pipe above arch face and drum is connected, above arch face, intrafascicular of the tedge of solid matter is provided with the maintenance deashing passage arranging by cross, between two the vertical headers in the left and right, rear of rear arch, be connected with transverse tube of some ends, end transverse tube is upwards connected with drum by some vertical ducts, between the pipe pipe of last row's vertical duct, connect and compose rear tube wall wall by fin, on rear tube wall wall, be provided with the some blowing pipes of aiming at rear arch arch face top, 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 is all symmetrically arranged with secondary air channel, secondary air channel all passes outwards through inside and outside tube wall wall and is connected with 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, between forward and backward flue, crossing smoke pipe by some the 3rd backhauls 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 joins through drum and the rear smoke box being located at outside drum.
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 longitudinal fume tube type structure, on the flat-plate closure of the front and back of drum, open eccentric orfice, and be the 3rd return flue by eccentric orfice straight smoke pipe of longitudinal assembling in drum, the rear and front end of straight smoke pipe respectively with soldered the connecing of front and back flat-plate closure of drum, the prolongation collar extension of straight smoke pipe prosopyle, flange closure plate is housed, and seal, straight smoke pipe deutostoma extends to outside drum and pipe joins, in the front portion of straight smoke pipe, two short smoke pipes of splayed are housed, short smoke pipe communicates with the second return flue.
CN201310367162.4A 2013-08-22 2013-08-22 Horizontal type triple-pass chain-grate boiler combusting coal and biomass fuel Active CN103388815B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104100961B (en) * 2014-07-25 2016-02-03 仲伟军 Horizontal coal-fired, biomass-burning chain-grate boiler
CN104976612B (en) * 2015-07-23 2017-10-03 仲伟军 Horizontal biomass-burning chain-grate boiler

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB531132A (en) * 1939-07-12 1940-12-30 James Neil Deas Improvements in water tube boilers
DE3307598A1 (en) * 1982-03-10 1983-09-22 ID-Energiesysteme GmbH, 6380 St. Johann, Tirol Constructional element for the production of a heating installation and heating installation produced using such constructional elements
CN2033481U (en) * 1988-06-08 1989-03-01 大连轻工机械总厂 Water and smoke-tube boiler
DE4329439A1 (en) * 1993-09-01 1995-04-13 Boehm Herta Central-heating boiler of vertical sectional construction, the heating problem being solved by combination in a simple method of construction
CN2932200Y (en) * 2006-05-30 2007-08-08 张佑全 Normal pressure horizontal straight pipe three-return coal hot-water boiler
CN101957059A (en) * 2009-07-15 2011-01-26 王森 Full reverse convection unsealed water tube boiler
CN102116526A (en) * 2010-01-04 2011-07-06 陈雅华 Counter current heat exchanging water-fire tube boiler capable of saving energy and protecting environment
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
CN203421664U (en) * 2013-08-22 2014-02-05 仲伟军 Coal and biomass fuel burning horizontal type three-return-stroke chain-grate boiler

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB531132A (en) * 1939-07-12 1940-12-30 James Neil Deas Improvements in water tube boilers
DE3307598A1 (en) * 1982-03-10 1983-09-22 ID-Energiesysteme GmbH, 6380 St. Johann, Tirol Constructional element for the production of a heating installation and heating installation produced using such constructional elements
CN2033481U (en) * 1988-06-08 1989-03-01 大连轻工机械总厂 Water and smoke-tube boiler
DE4329439A1 (en) * 1993-09-01 1995-04-13 Boehm Herta Central-heating boiler of vertical sectional construction, the heating problem being solved by combination in a simple method of construction
CN2932200Y (en) * 2006-05-30 2007-08-08 张佑全 Normal pressure horizontal straight pipe three-return coal hot-water boiler
CN101957059A (en) * 2009-07-15 2011-01-26 王森 Full reverse convection unsealed water tube boiler
CN102116526A (en) * 2010-01-04 2011-07-06 陈雅华 Counter current heat exchanging water-fire tube boiler capable of saving energy and protecting environment
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
CN203421664U (en) * 2013-08-22 2014-02-05 仲伟军 Coal and biomass fuel burning horizontal type three-return-stroke chain-grate boiler

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