CN106705106A - Coal feeding system capable of achieving double-sided firing - Google Patents
Coal feeding system capable of achieving double-sided firing Download PDFInfo
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- CN106705106A CN106705106A CN201611200926.0A CN201611200926A CN106705106A CN 106705106 A CN106705106 A CN 106705106A CN 201611200926 A CN201611200926 A CN 201611200926A CN 106705106 A CN106705106 A CN 106705106A
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- Prior art keywords
- coal
- side wall
- supply system
- bunker
- domes
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
The invention discloses a coal feeding system capable of achieving double-sided firing. The coal feeding system comprises a coal hopper, a guide plate, a sieve plate and an arc-shaped structure, wherein the guide plate, the sieve plate and the arc-shaped structure are successively arranged inside the coal hopper from top to bottom; the guide plate is obliquely mounted near a coal inlet of the coal hopper and is used for guiding coal to the sieve plate; the sieve plate is mounted on the right side wall of the coal hopper and is tilted to the lower left; the arc-shaped structure is arranged above a fire grate; the front side wall and the rear side wall of the arc-shaped structure are closely connected with the front side wall and the rear side wall of the coal hopper; a primary coal falling channel is formed between the left side wall of the arc-shaped structure and the left side wall of the coal hopper; a secondary coal falling channel is formed between the right side wall of the arc-shaped structure and the right side wall of the coal hopper. Through cooperation of the sieve plate and the arc-shaped structure, coal briquettes can enter the hearth through a primary coal feeding channel, so that the coal powder can enter the hearth through a secondary coal feeding channel. Through strong ignition effect of a primary coal feeding layer on a secondary coal feeding layer, stratified combustion and double-sided firing of the coal bed can be achieved, so that the burnout rate and the heat efficiency are improved.
Description
Technical field
The present invention relates to boiler matching equipment technical field, more particularly to a kind of achievable two-sided coal supply system for catching fire.
Background technology
In the prior art, conventional chain stove mostly by coal bunker once give coal, by coal flashboard adjust coal seam thickness and
Coal-supplying amount, and coal is delivered to by burner hearth by fire grate is burnt.The combustion system belong to top catch fire, not only ignition condition
Difference, and combustion process is single, slow, and then cause burnout rate and the thermal efficiency all relatively low.
In recent years, the wideling popularize to coal technology with mechanical delamination, greatly improves the combustion position of chain furnace, improves
Efficiency of combustion.But, because it still falls within top ignition mode, burning still can not be fundamentally solved when coal seam is thicker slow
Slowly, combustion intensity is low, burnout rate and the low problem of the thermal efficiency.
For the defect of prior art, need badly it is a kind of can improve combustion intensity, improve burnout rate and the thermal efficiency to coal
System.
The content of the invention
It is an object of the invention to propose a kind of new coal supply system, with improve coal combustion intensity, improve burnout rate with
The thermal efficiency, so make boiler heat load adjustable range more extensively, improve boiler to the scope of application of coal.
The invention provides a kind of achievable two-sided coal supply system for catching fire, including：Coal bunker, and inside coal bunker,
And directing plate, sieve plate, the domes for from top to bottom setting gradually；
The directing plate is inclined and mounted near the coal-in port of coal bunker, and the coal for coal-in port to be input into is guided to sieve plate；
The sieve plate is arranged on coal bunker right side wall, and relatively described coal bunker right side wall inclined downward to the left；
The domes are arranged on fire grate top, and forward and backward side wall and the coal bunker of the domes forward and backward side wall
It is closely coupled, a coal breakage passage, the domes are formed between the left side wall of the domes and the left side wall of coal bunker
Right side wall and the right side wall of the coal bunker between formed secondary falling coal channel.
Preferably, the domes are made up of ogival, preceding arch；The longitudinal section of the ogival is substantially in " V "
Type, including：The shell being welded by steel plate, the insulation material being filled in shell；The face arch portion is located at ogival lower section,
For being ignited to once carrying out radiation to coal.
Preferably, the preceding arch meets apart from the height h of fire grate：
500mm≤h≤600mm。
Preferably, the coal supply system also includes：Coal flashboard；The coal flashboard is arranged on bottom once to coal channel,
For adjusting a coal-supplying amount.
Preferably, the coal supply system also includes：Coal flashboard adjusting means；The coal flashboard adjusting means and the coal lock
Plate is connected, for adjusting coal flashboard height vertically.
Preferably, the coal supply system also includes：Secondary coalfeeding adjustment device；The secondary coalfeeding adjustment device includes：
Variable frequency reducer motor, transmission mechanism, steel rider；The variable frequency reducer motor, transmission mechanism are arranged on outside coal bunker, and the steel rider is consolidated
Surely it is arranged on the secondary top to coal channel；The variable frequency reducer motor drives the steel rider to rotate by transmission mechanism, is used for
Adjust secondary coal-supplying amount.
Preferably, the distance between the steel rider and right side wall of the domes d1, the steel rider and the coal bunker
The distance between right side wall d2Meet：
10mm≤d1≤30mm；
10mm≤d2≤30mm。
Preferably, it is described once to coal channel along the width of side before and after coal bunker, it is described it is secondary to coal channel along coal bunker before and after
The width of side is equal with the width of the fire grate.
Preferably, it is described once to give coal channel bottom along the length l of fire grate direction of advance1Meet：
200mm≤l1≤250mm。
Preferably, it is described it is secondary to coal channel bottom along fire grate direction of advance length l2Meet：
80mm≤l2≤90mm。
As can be seen from the above technical solutions, it is of the invention to be capable of achieving the two-sided coal supply system for catching fire, mainly include：Coal
Bucket, directing plate, sieve plate, the domes for setting gradually inside coal bunker and from top to bottom；Directing plate is inclined and mounted on coal bunker
Coal-in port near, for coal to be guided to sieve plate；Sieve plate is arranged on coal bunker right side wall, and inclined downward to the left；Domes
Fire grate top is arranged on, and the forward and backward side wall of domes and the forward and backward side wall of coal bunker are closely coupled, the left side of domes
A coal breakage passage is formed between wall and the left side wall of coal bunker, two are formed between the right side wall of domes and the right side wall of coal bunker
Secondary coal breakage passage.The present invention is formd once to coal channel and secondary to coal channel by setting domes inside coal bunker,
Such that it is able to realize twice to coal.By the cooperation of sieve plate and domes, can make the larger coal cinder of granularity pass through once to
Coal channel enters burner hearth, the less coal dust of granularity is entered burner hearth to coal channel by secondary.By once to coal seam to secondary
To the strong effect of igniting in coal seam, be capable of achieving coal seam stratified combustion, it is two-sided catch fire, improve burnout rate and the thermal efficiency, Jin Erti
The scope of application of the heat load adjustment scope and boiler of boiler high to coal.
Brief description of the drawings
By the specific embodiment part of offer referring to the drawings, the features and advantages of the present invention will become more
It is readily appreciated that, in the accompanying drawings：
Fig. 1 is the longitudinal sectional view of the coal supply system in the specific embodiment for showing；
Fig. 2 is the sectional view of sieve plate and secondary coalfeeding adjustment device；
1st, coal bunker；2nd, sieve plate；3rd, directing plate；4th, domes；401st, ogival；402nd, preceding arch；5th, coal flashboard；6th, one
It is secondary to coal channel；7th, front water wall；8th, front wall inner side steel plate；9th, steel rider；10th, secondary falling coal channel；11st, fire grate；12nd, bearing
Seat；13rd, transmission mechanism；14th, variable frequency reducer motor.
Specific embodiment
Illustrative embodiments of the invention are described in detail with reference to the accompanying drawings.Illustrative embodiments are retouched
State merely for the sake of demonstration purpose, and be definitely not to the present invention and its application or the limitation of usage.
Existing conventional chain stove is generally used once to coal technology, due to once giving burning of coal mode for one side
Fire, therefore its combustion intensity is relatively low, burnout rate and the thermal efficiency are relatively low.In consideration of it, the present inventor proposes one kind newly
Coal supply system, with can realize it is two-sided catch fire, improve combustion intensity, improve burnout rate and the thermal efficiency.
It is understood that the term " front side wall ", " rear wall ", " left side wall ", " right side wall " in the present invention are from same
One observation position refers to four side walls of coal bunker, in order to describe the relative position relation of each element in coal bunker inside.When
When the location of observer changes, the orientation description for four side walls is likely to difference.
1-2 and specific embodiment are carried out in detail to being capable of achieving the two-sided coal supply system for catching fire in the present invention below in conjunction with the accompanying drawings
Describe in detail bright.
Fig. 1 shows the longitudinal sectional view of coal supply system in specific embodiment.It can be seen from figure 1 that the coal supply system is specifically wrapped
Include：Coal bunker 1, and inside coal bunker 1 and the directing plate 3, sieve plate 2, the domes 4 that from top to bottom set gradually.
In this embodiment, coal bunker 1 is substantially in hollow cuboid.In the specific implementation, the steel used by the shell of coal bunker 1
Plate can be linked into an integrated entity by welding manner, can be also attached using other modes.In addition, coal bunker may be designed as other
Shape, such as hyperboloid.It can be seen from figure 1 that being provided with front water wall 7 and front wall time steel plate on the outside of coal bunker right side wall.
Directing plate 3 is arranged near the coal-in port of coal bunker 1 and the left side wall of relative coal bunker 1 is inclined to the right.Directing plate
3 are used to guide the coal that coal-in port is input into sieve plate 2.Sieve plate 2 is arranged on the right side wall of coal bunker 1, and the right side of coal bunker 1 relatively
Wall inclined downward to the left.
Sieve plate 2 is used to carry out screening layering to coal breakage by granule size.As it is clear from fig. 2 that the sieve plate 2 in the embodiment is in comb
Shape, including multiple equidistantly distributeds screening bar.When coal is fallen on sieve plate by directing plate, the larger coal cinder of granularity is along sieve
The incline direction of plate slides, and the less coal dust of granularity falls through the gap between screening bar.
Domes 4 are arranged on the top of fire grate 11, and the forward and backward side wall of domes 4 and the forward and backward side wall of coal bunker 1 are tight
Close to be connected, left side wall and the left side wall of coal bunker 1 of domes 4 are not attached to, the right side wall of domes 4 and the right side of coal bunker 1
Wall is not attached to.So, a coal breakage passage 6 is formed between the left side wall of domes 4 and the left side wall of coal bunker, in arch
Secondary falling coal channel 10 is formed between the right side wall of shape structure 4 and the right side wall of coal bunker.In the specific implementation, for anti-leak-stopping coal
The appearance of phenomenon, can make once to coal channel 6 along the width of side before and after coal bunker 1, it is secondary to coal channel 10 along side before and after coal bunker 1
Width is equal with the width of fire grate 11.In addition, in the specific implementation, once to coal channel bottom along fire grate direction of advance length
l1May be provided at following scope：200mm≤l1≤250mm。
This gives a kind of preferred embodiment of domes 4.Specifically, domes 4 are by ogival
401st, preceding arch 402 is constituted.Wherein, the longitudinal section of ogival 401 is substantially in " V " type, including：By steel plate be welded it is outer
Shell, the light thermal-insulating material being filled in shell.So, ogival can not only by coal bunker be divided into coal breakage passage and
Secondary falling coal channel, and then be engaged the larger coal cinder of granularity with sieve plate by a coal breakage passage conveying, granularity is smaller
Coal dust conveyed by secondary falling coal channel；And ogival can play a part of insulation, so as to ensure in coal bunker
Coal will not be cracked because of overheat.Preceding arch 402 is located at the lower section of ogival 401, for being ignited to once carrying out radiation to coal.
During specific implementation, in order to improve effect of igniting, preceding arch 402 can be made to meet apart from the height h of fire grate 11：500mm≤h≤
600mm。
In this embodiment, by sieve plate, the cooperation of domes so that the larger coal cinder of granularity is led to by a coal breakage
Road 6 falls on fire grate 11, and the less coal dust of granularity is fallen on fire grate 11 by secondary falling coal channel 10, so as to realize " twice, dividing
Layer gives coal ".It is secondary to fall in fired state to coal seam because the coal seam once to coal is to be ignited in domes bottom
Once on coal seam, ignite to be ignited with the radiation of domes in underlying seam and be capable of achieving two-sided catching fire under double action.This
Sample one, substantially increases combustion intensity, improves burnout rate and the thermal efficiency, so improve the load regulation range of boiler with
And to the scope of application of coal.
Further, the coal supply system in the embodiment also includes：Coal flashboard 5, secondary coalfeeding adjustment device.Coal flashboard 5
The bottom once to coal channel 6 is arranged on, for adjusting a coal-supplying amount.Secondary coalfeeding adjustment device is used to adjust secondary
Coal-supplying amount, specifically includes：Variable frequency reducer motor 14, transmission mechanism 13, steel rider 9.As it is clear from fig. 2 that variable frequency reducer motor 14, transmission
Mechanism 13 is arranged on outside coal bunker 1, and steel rider 9 is arranged on the secondary top to coal channel 10, and is fixedly mounted by bearing block 12
On the forward and backward side wall of coal bunker.When coal supply system works, variable frequency reducer motor 14 drives steel rider 9 to revolve by transmission mechanism 13
Turn.Because steel roller faces are rough and uneven in surface, therefore can rub when rotated, scrape coal grain, so as to drive coal grain to lead to coal from secondary
Road 10 falls into fire grate 11.In the specific implementation, the revolution of variable frequency reducer motor can be adjusted by frequency converter automatic or manual, so that
Change the rotary speed of steel rider, and then secondary coal-supplying amount is adjusted.In the specific implementation, for the ease of coal breakage, steel rider with
The distance between domes right side wall d1, the distance between steel rider and coal bunker right side wall d2Can be set as follows：10mm≤d1
≤ 30mm, 10mm≤d2≤30mm.In addition, in order to reduce burner hearth to the heat radiation of steel rider and flue gas circulation heat transfer, it is secondary to give
The bottom of coal channel 10 along fire grate direction of advance length l2Can be set as follows：80mm≤l2≤90mm。
It is high in order to automatically adjust the setting vertically of coal flashboard according to user's request in a more excellent embodiment
Degree, is additionally provided with the coal flashboard adjusting means being connected with coal flashboard in coal supply system.
Compared with a traditional coal supply system, the present invention in the achievable two-sided coal supply system for catching fire at least with
Lower advantage：
(1), used cooperatively by the sieve plate that is set inside coal bunker, domes, be capable of achieving layering, gradation degree, two
It is secondary to coal.Because the larger coal cinder of granularity is in lower floor, the less coal dust of granularity is on upper strata so that coal seam size distribution is more uniform
Rationally, effectively prevent due to the problems such as the size distribution uneven coal seam for causing in coal seam flocks together, leaks out.By once giving coal seam
To the secondary strong effect of igniting to coal seam, be capable of achieving coal seam stratified combustion, it is two-sided catch fire, improve combustion intensity, burnout rate
With the thermal efficiency, and then cause boiler load regulation range it is more extensive with the coal scope of application.
(2) set location from traditional coal flashboard is different, the present invention by coal flashboard be arranged on once in coal channel,
Before face arch, a coal-supplying amount can be adjusted.
(3), by setting secondary coalfeeding adjustment device, secondary coal-supplying amount can be adjusted, so can flexibly, it is accurate
The load of true regulation and control boiler, has saved operating cost.
Although with reference to illustrative embodiments, invention has been described, but it is to be understood that the present invention does not limit to
The specific embodiment that Yu Wenzhong is described in detail and shown, in the case of without departing from claims limited range, this
Art personnel can make various changes to the illustrative embodiments.
Claims (10)
1. it is a kind of to be capable of achieving the two-sided coal supply system for catching fire, it is characterised in that the coal supply system includes：Coal bunker, and be located at
Directing plate, sieve plate, the domes for setting gradually inside coal bunker and from top to bottom；
The directing plate is inclined and mounted near the coal-in port of coal bunker, and the coal for coal-in port to be input into is guided to sieve plate；
The sieve plate is arranged on coal bunker right side wall, and relatively described coal bunker right side wall inclined downward to the left；
The domes are arranged on fire grate top, and the forward and backward side wall of the domes and the forward and backward side wall of coal bunker are tight
It is connected, a coal breakage passage, the right side of the domes is formed between the left side wall of the domes and the left side wall of coal bunker
Secondary falling coal channel is formed between the right side wall of side wall and the coal bunker.
2. coal supply system as claimed in claim 1, it is characterised in that the domes are made up of ogival, preceding arch；
The longitudinal section of the ogival is substantially in " V " type, including：The shell that is welded by steel plate, it is filled in shell
Insulation material；
The face arch portion is located at ogival lower section, for being ignited to once carrying out radiation to coal.
3. coal supply system as claimed in claim 2, it is characterised in that the preceding arch meets apart from the height h of fire grate：
500mm≤h≤600mm。
4. coal supply system as claimed in claim 1, it is characterised in that the coal supply system also includes：Coal flashboard；
The coal flashboard is arranged on bottom once to coal channel, for adjusting a coal-supplying amount.
5. coal supply system as claimed in claim 4, it is characterised in that the coal supply system also includes：Coal flashboard adjusting means；
The coal flashboard adjusting means is connected with the coal flashboard, for adjusting coal flashboard height vertically.
6. coal supply system as claimed in claim 1, it is characterised in that the coal supply system also includes：Secondary coalfeeding adjustment dress
Put；
The secondary coalfeeding adjustment device includes：Variable frequency reducer motor, transmission mechanism, steel rider；The variable frequency reducer motor, transmission
Mechanism is arranged on outside coal bunker, and the steel rider is fixedly installed on the secondary top to coal channel；
The variable frequency reducer motor drives the steel rider to rotate by transmission mechanism, for adjusting secondary coal-supplying amount.
7. coal supply system as claimed in claim 6, it is characterised in that between the right side wall of the steel rider and the domes
Apart from d1, the distance between the steel rider and the coal bunker right side wall d2Meet：
10mm≤d1≤30mm；
10mm≤d2≤30mm。
8. the coal supply system as described in claim 1-7 is any, it is characterised in that described once to coal channel along side before and after coal bunker
Width, described secondary equal with the width of the fire grate along the width of side before and after coal bunker to coal channel.
9. the coal supply system as described in claim 1-7 is any, it is characterised in that it is described once to coal channel bottom along fire grate before
Enter the length l in direction1Meet：
200mm≤l1≤250mm。
10. the coal supply system as described in claim 1-7 is any, it is characterised in that it is described it is secondary to coal channel bottom along fire grate
The length l of direction of advance2Meet：
80mm≤l2≤90mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200926.0A CN106705106A (en) | 2016-12-22 | 2016-12-22 | Coal feeding system capable of achieving double-sided firing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200926.0A CN106705106A (en) | 2016-12-22 | 2016-12-22 | Coal feeding system capable of achieving double-sided firing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106705106A true CN106705106A (en) | 2017-05-24 |
Family
ID=58895683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611200926.0A Pending CN106705106A (en) | 2016-12-22 | 2016-12-22 | Coal feeding system capable of achieving double-sided firing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106705106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930975A (en) * | 2018-04-30 | 2018-12-04 | 中山市加丰机械科技有限公司 | A kind of uniform coaling gear of chain furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4312901A1 (en) * | 1993-04-16 | 1994-10-20 | Ver Energiewerke Ag | Method and arrangement for combustion of biomaterials for a coaldust-fired steam boiler |
| CN2290765Y (en) * | 1996-08-26 | 1998-09-09 | 刘天新 | Layered and sectional burning unit of forward rotary chain furnace |
| CN2390106Y (en) * | 1999-06-25 | 2000-08-02 | 王家琪 | Coal feeder for chain boiler |
| CN104864389A (en) * | 2015-05-08 | 2015-08-26 | 哈尔滨华氏海德科技发展有限公司 | Chain grate stoker capable of realizing partial gasified combustion of coal |
| CN206310526U (en) * | 2016-12-22 | 2017-07-07 | 哈尔滨华氏海德科技发展有限公司 | It is a kind of to be capable of achieving the two-sided coal supply system for catching fire |
-
2016
- 2016-12-22 CN CN201611200926.0A patent/CN106705106A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4312901A1 (en) * | 1993-04-16 | 1994-10-20 | Ver Energiewerke Ag | Method and arrangement for combustion of biomaterials for a coaldust-fired steam boiler |
| CN2290765Y (en) * | 1996-08-26 | 1998-09-09 | 刘天新 | Layered and sectional burning unit of forward rotary chain furnace |
| CN2390106Y (en) * | 1999-06-25 | 2000-08-02 | 王家琪 | Coal feeder for chain boiler |
| CN104864389A (en) * | 2015-05-08 | 2015-08-26 | 哈尔滨华氏海德科技发展有限公司 | Chain grate stoker capable of realizing partial gasified combustion of coal |
| CN206310526U (en) * | 2016-12-22 | 2017-07-07 | 哈尔滨华氏海德科技发展有限公司 | It is a kind of to be capable of achieving the two-sided coal supply system for catching fire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930975A (en) * | 2018-04-30 | 2018-12-04 | 中山市加丰机械科技有限公司 | A kind of uniform coaling gear of chain furnace |
| CN108930975B (en) * | 2018-04-30 | 2019-08-30 | 中山市加丰机械科技有限公司 | A kind of uniform coaling gear of chain furnace |
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| PB01 | Publication | ||
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Application publication date: 20170524 |