CN202561775U - Two step type water cooling vibrating grate - Google Patents
Two step type water cooling vibrating grate Download PDFInfo
- Publication number
- CN202561775U CN202561775U CN2012202265658U CN201220226565U CN202561775U CN 202561775 U CN202561775 U CN 202561775U CN 2012202265658 U CN2012202265658 U CN 2012202265658U CN 201220226565 U CN201220226565 U CN 201220226565U CN 202561775 U CN202561775 U CN 202561775U
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- grate
- fire grate
- fuels
- grate body
- leading portion
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Abstract
The utility model discloses a two step type water cooling vibrating grate. A vibrating mechanism is connected onto the grate, the grate is in a two step shape and composed of a front grate body and a back grate body which are integrated and formed by membrane walls, the front grate body is higher than the back grate body, and the front grate body and the back grate body are connected with a furnace water wall through a front flexible pipe and a back flexible respectively and incline downwards along motion directions of fuels. Small ventilation holes are arranged on the front grate body, large ventilation holes are arranged on the back grate body, and large ventilation holes are arranged at the step position where the front grate body is connected with the back grate body. In the whole combustion process, fuels are fed into the front grate body through a feeder, high temperature fume radiant heat is used for preheating and drying the fuels so as to precipitate moisture, then a rolling process during falling off is provided when the fuels are delivered at the grate step position, the fuels are fully mixed with combustion supporting oxygen to enable fuels to be fully combusted, the burn-off rate of the fuels is greatly improved, and the combustion efficiency of a device is improved.
Description
Technical field
The utility model belongs to the biomass fuel boiler technical field, relates in particular to a kind of vibrating-grate stoker of biomass fuel boiler.
Background technology
As the regenerative resource of cleaning, the utilization of biomass energy has become global common recognition.With living beings proxy mineral fuel, be to reduce CO
2Discharging, the ideal style of minimizing greenhouse gas emission.From to the consideration of environment and energy resource structure aspect, country has given support on policy and popularization aspect the biomass energy utilizing, and has limited the construction of coal-fired little unit, has examined a lot of biomass fuel power plant, and this just makes biomass boiler have very big market.The biomass electric power plant boiler all adopts the single vibration fire grate form of imported technology at present, and this burning form is directed against directed fuel, and the moisture that contains of fuel is had certain limitation; And what obtain from domestic fuel market usually is high-moisture fuel; Even pluralities of fuel mixed form; Make that biomass boiler fuel combustion in actual moving process is insufficient, uncombusted is just discharged by the cinder notch that falls, and fuel is combustion instability on the single vibration fire grate; Disturbing phenomenon occurs, efficiency of combustion is low.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art, and domestic high-moisture biomass fuel of a kind of adaptation and multiple mixing biomass fuel are provided, and can improve two stepwise water-cooled vibrating-grate stokers of boiler combustion efficiency.
The utility model for realizing the technical scheme that above-mentioned purpose adopted is:
A kind of two stepwise water-cooled vibrating-grate stokers comprise fire grate and vibrating mechanism, it is characterized in that: described fire grate is the stepped fire grates of two stepwises, is made up of the leading portion fire grate that is connected as a single entity each other, back segment fire grate, and the leading portion fire grate is higher than the back segment fire grate.
In order to install, to overhaul conveniently, the said leading portion fire grate of the utility model, back segment fire grate constitute by the water-cooled membrane wall, and described leading portion fire grate, back segment fire grate are connected with furnace wall cooling through preceding flexible pipe, back flexible pipe respectively.
For fuel is detained the rational time on fire grate, described leading portion fire grate, back segment fire grate are downward-sloping along the direction of motion of fuel.
In order to improve efficiency of combustion, the described leading portion fire grate of the utility model is arranged airing hole, and the back segment fire grate is arranged the ventilation macropore, and the ladder place that leading portion fire grate and back segment fire grate are connected as a single entity each other arranges the ventilation macropore.
The working method of the two stepwise water-cooled vibrating-grate stokers of the utility model is: fuel is sent into the leading portion fire grate by batcher; Utilize the high-temperature flue gas radiant heat to fuel preheating in addition, drying here; Separate out moisture, adjustment fire grate vibration frequency is controlled the time of staying of fuel at the leading portion fire grate, and fuel progressively moves backward in the running; Reach the effect of rolling and by here hot blast and height fall when arriving fire grate ladder place; Form parabolic shape, prolongation fuel is the time of staying aloft, fully mixes with combustion-supporting oxygen; Fuel is fallen the back segment fire grate and is continued to move backward, fully burning in this moving process, and the afterburnt falls into slag-drip opening and discharges.In whole combustion process, at first by high-temperature flue gas and a hot blast with fuel preheating, drying, operating fuel has the process that falls to rolling to fire grate ladder place then; Fully mix with combustion-supporting oxygen; Make burning more abundant, greatly improved the burn-off rate of fuel, improved the efficiency of combustion of equipment.
Description of drawings
Fig. 1 is that the master of the utility model two stepwise water-cooled vibrating-grate stokers looks sketch map.
Fig. 2 is the schematic top plan view of the utility model two stepwise water-cooled vibrating-grate stokers.
Among the figure: flexible pipe before the 1-, 2-leading portion fire grate, 3-ladder place, 4-back segment fire grate, flexible pipe behind the 5-, 6-vibrating mechanism.
The specific embodiment
Below through non-limiting embodiment and combine accompanying drawing that the utility model is done further explanation.
Fig. 1, Fig. 2 are the sketch map of a kind of specific embodiment of the utility model two stepwise water-cooled vibrating-grate stokers; Be connected with vibrating mechanism 6 on the fire grate of this pair water-cooled vibrating-grate stoker; Fire grate is the stepped fire grates of two stepwises; Be made up of the leading portion fire grate 2 that is connected as a single entity each other, back segment fire grate 4, leading portion fire grate 2 is higher than back segment fire grate 4.Leading portion fire grate 2, back segment fire grate 4 constitute by the water-cooled membrane wall, and material adopts 15CrMo; Leading portion fire grate 2, back segment fire grate 4 are connected with furnace wall cooling through preceding flexible pipe 1, back flexible pipe 5 respectively, and the material of preceding flexible pipe 1, back flexible pipe 5 employings is 13CrMo44; Leading portion fire grate 2, back segment fire grate 4 are downward-sloping along the direction of motion of fuel.Leading portion fire grate 2 is arranged airing hole, and diameter is 2.5mm, and back segment fire grate 4 is arranged the ventilation macropore, and diameter is 5mm, and leading portion fire grate 2 is arranged the ventilation macropore with the ladder place 3 that back segment fire grate 4 is connected as a single entity each other,, diameter is 5mm.
More than cited embodiment only supply to understand the usefulness of the utility model; Be not to be restriction to the described technical scheme of the utility model; The those of ordinary skill in relevant field; On the basis of the said technical scheme of claim, can also make multiple variation or distortion, variation that all are equal to or distortion all should be encompassed within the claim protection domain of the utility model.
Claims (5)
1. a stepwise water-cooled vibrating-grate stoker comprises fire grate and vibrating mechanism, it is characterized in that: described fire grate is the stepped fire grates of two stepwises, is made up of the leading portion fire grate that is connected as a single entity each other, back segment fire grate, and the leading portion fire grate is higher than the back segment fire grate.
2. two stepwise water-cooled vibrating-grate stokers according to claim 1; It is characterized in that: said leading portion fire grate, back segment fire grate constitute by the water-cooled membrane wall, and described leading portion fire grate, back segment fire grate are connected with furnace wall cooling through preceding flexible pipe, back flexible pipe respectively.
3. two stepwise water-cooled vibrating-grate stokers according to claim 1 and 2 is characterized in that: described leading portion fire grate, back segment fire grate are downward-sloping along the direction of motion of fuel.
4. two stepwise water-cooled vibrating-grate stokers according to claim 1 and 2 is characterized in that: described leading portion fire grate is arranged airing hole, and the back segment fire grate is arranged the ventilation macropore, and the ladder place that leading portion fire grate and back segment fire grate are connected as a single entity each other arranges the ventilation macropore.
5. two stepwise water-cooled vibrating-grate stokers according to claim 3 is characterized in that: described leading portion fire grate is arranged airing hole, and the back segment fire grate is arranged the ventilation macropore, and the ladder place that leading portion fire grate and back segment fire grate are connected as a single entity each other arranges the ventilation macropore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202265658U CN202561775U (en) | 2012-05-21 | 2012-05-21 | Two step type water cooling vibrating grate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202265658U CN202561775U (en) | 2012-05-21 | 2012-05-21 | Two step type water cooling vibrating grate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561775U true CN202561775U (en) | 2012-11-28 |
Family
ID=47211427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202265658U Expired - Lifetime CN202561775U (en) | 2012-05-21 | 2012-05-21 | Two step type water cooling vibrating grate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561775U (en) |
-
2012
- 2012-05-21 CN CN2012202265658U patent/CN202561775U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |
|
| CX01 | Expiry of patent term |