CN202647831U - Chain boiler dusting combustion supporting device and programmable logic controller (PLC) centralized control system thereof - Google Patents
Chain boiler dusting combustion supporting device and programmable logic controller (PLC) centralized control system thereof Download PDFInfo
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- CN202647831U CN202647831U CN 201220289804 CN201220289804U CN202647831U CN 202647831 U CN202647831 U CN 202647831U CN 201220289804 CN201220289804 CN 201220289804 CN 201220289804 U CN201220289804 U CN 201220289804U CN 202647831 U CN202647831 U CN 202647831U
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- auxiliary combustion
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Abstract
The utility model discloses a chain boiler dusting combustion supporting device and a programmable logic controller (PLC) centralized control system thereof. The chain boiler dusting combustion supporting device comprises a raw coal bin, a conveyor, a second conveyor, a grinder and a jet nozzle. The raw coal bin containing fuel is connected with the conveyor. The conveyor arranged in a lower position is connected with the second conveyor arranged in a higher position through a first conveyor belt. The second conveyor conveys the fuel into the grinder through a second conveyor belt. The jet nozzle is arranged at an outlet of the grinder. The smashed fuel is jetted into a combustion chamber. The PLC centralized control system of the chain boiler dusting combustion supporting device comprises a temperature sensor arranged in the combustion chamber. Signals of the temperature sensor are input into a PLC control unit. An output end of the PLC control unit is connected with a sandwich valve. The chain boiler dusting combustion supporting device and the PLC centralized control system thereof achieve combustion supporting through grinding-type feed, displays the advantage of a pulverized coal jetting technique, namely enlarges the contact area between fuel coal and oxygen in the air to the maximum and promotes fierce and quick oxidation process, can control combustion states, enables the fuel coal to be burned completely and improves burn-off rate.
Description
Technical field
The utility model relates to the renovation technique fields such as molded coal boiler, grate firing boiler, chamber burning, and is especially relevant with dust auxiliary combustion equipment and PLC centralized control system thereof of a kind of chain furnace.
Background technology
Chain furnace occupies most ratios in national industry and heating boiler field, and the coal consumption of boiler consists of the main body of heat cost.Improve the efficiency of combustion of chain furnace, for reducing operating cost, improving the performance of enterprises, play undoubtedly vital effect.
Combustion apparatus refers to as making the fuel fire burning and its chemical energy being converted into the equipment that heat energy discharges.The combustion apparatus of Industrial Boiler is usually placed in the front lower place of boiler itself, and its effect is to throw in fuel, burning heat release and get rid of lime-ash.
The combustion apparatus form is varied, having to burn coal is main grate furnace, such as handwarmer, chain furnace, spreader stoker boiler, reciprocating grate stove etc., fluidized bed furnace that in addition can burning inferior coal, fuel is in the outstanding burner of suspended state burning in furnace chamber, and various heating furnace, drying oven, incinerator etc.Basically adopt beating type charging burning in existing combustion apparatus, the particle of fuel is thick like this, directly the efficient of impact burning.
In order to address the above problem, the inventor designs a kind of chain furnace dust auxiliary combustion equipment and PLC centralized control system thereof, and this case produces thus.
The utility model content
Main purpose of the present utility model provides a kind of chain furnace dust auxiliary combustion equipment and PLC centralized control system thereof, realize that the grinding type charging is combustion-supporting, the speciality of performance breeze blowing technology, the contact area that has namely enlarged to greatest extent oxygen in coal-fired and the air is facilitated fierceness and oxidizing process rapidly, can control fired state, so that sufficient combustion, the burn-off rate of raising.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
A kind of chain furnace auxiliary combustion equipment that dusts comprises run coal bin, conveyer, second conveyor, pulverizer, nozzle; The run coal bin that fuel is housed is connected with conveyer, the conveyer that is positioned at lower be positioned at the eminence second conveyor and be connected by the first conveyer belt, second conveyor is carried by second fuel is delivered in the pulverizer, and nozzle is installed in the pulverizer outlet, and the fuel after pulverizing is sprayed in the combustion chamber.
Described the first conveyer belt is 30～miter angle.
Described feeding hole of pulverizer is lower than second conveyor, and the second conveyer belt is oblique lower state.
Described pulverizer comprises center coal spout, separator cover device, separator body, grinding roller, mill bowl; The internal layer cone bucket that nests together inside and outside the separator cover device comprises and outer cone bucket form the discharging chamber between internal layer cone bucket and the outer cone bucket; The center coal spout places in the internal layer cone bucket, and the end opening of internal layer cone bucket is connected with the separator body by managing in the Wen; Blade is installed on the grinding roller, places the rotation of milling of mill bowl, mill bowl is positioned at the separator body that offers air inlet, and air inlet is connected with blower fan, is communicated with the discharging chamber on the separator body.
Offer discharging opening on the described discharging chamber.
Described mill bowl links into an integrated entity with impeller with shaft coupling, dispels the heat in the fuel tank below shaft coupling is immersed in.
Described grinding roller and blower fan are driven by the frequency modulation motor.
Described pulverizer outlet is connected with nozzle by sandwich valve again.
The dust PLC centralized control system of auxiliary combustion equipment of a kind of chain furnace comprises the temperature sensor that is installed in the combustion chamber, and the signal of temperature sensor is input in the PLC control module, the output connecting cleat valve of PLC control module.
Described PLC control module connects the frequency modulation motor.
After adopting such scheme, the utlity model has many beneficial effects:
The utility model fires, is controlled in one to the supply of raw coal, multi-stage crushing, air distribution, conveying, spray, concentrating on a set of equipment last time finishes, has high burn-off rate, wherein pulverizer is improved, raw coal becomes very fine particles through pulverizer a series of disintegrating process, is admitted to that suspension combustion reaches the completing combustion purpose in the stove.
Description of drawings
Fig. 1 is the overall schematic of the utility model preferred embodiment;
Fig. 2 is mill structure schematic diagram in the utility model preferred embodiment;
Fig. 3 is pulverizer and combustion chamber connection diagram in the utility model preferred embodiment;
Fig. 4 is that Fig. 3 A-A is to schematic diagram;
Fig. 5 is PLC unit module schematic diagram in the utility model preferred embodiment.
The specific embodiment
By reference to the accompanying drawings, preferred embodiment is described in further details to the utility model.
A kind of chain furnace auxiliary combustion equipment that dusts mainly comprises run coal bin 1, conveyer 2, second conveyor 3, pulverizer 4, nozzle 5.
Coal fuel is housed in the run coal bin 1, and run coal bin 1 is connected with conveyer 2, and feeding is to conveyer 2.Conveyer 2 and second conveyor 3 all are the apparatus for delivery of fuel, wherein the power of conveyer 2 is greater than the power of second conveyor 3, and conveyer 2 positions are lower, and second conveyor 3 positions are higher, connect transmission by the first conveyer belt 21 between the two.General the first conveyer belt 21 remains between 30～45 degree.The purpose of carrying so obliquely also is to carry out one screening, and the coal fuel that particle is large goes back to conveyer 2 places by the nature landing of conducting oneself with dignity, and then removes.
The outlet of pulverizer 4 is equipped with nozzle 5, is injected to combustion chamber 6 internal combustion by nozzle 5.
The internal structure of pulverizer 4 comprises center coal spout 7, separator cover device 8, separator body 9, grinding roller 10, mill bowl 11 as shown in Figure 2.
The internal layer cone bucket 81 that nests together inside and outside separator cover device 8 comprises and outer cone bucket 82 form a discharging chamber 83 between internal layer cone bucket 81 and the outer cone bucket 82, and the lower end of discharging chamber 83 is communicated with separator body 9.Offer a plurality of discharging openings 84 at the bead of internal layer cone bucket 81 simultaneously.
Center coal spout 7 is positioned at internal layer cone bucket 81 inside, and the upper end is by the second conveyer belt 31 blankings, and the lower end is horn-like opening.The end opening place of internal layer cone bucket 81 is connected with separator body 9 by pipe in the Wen 12, and the coal fuel that falls on the center coal spout 7 is sprayed in the interior mill bowl 11 of separator body 9 by high-speed pneumatic.
In order to dispel the heat for mill bowl 11, below separator body 9, be provided with fuel tank 15, shaft coupling 16 is immersed in the lubricating oil in the fuel tank 15, and the upper end of shaft coupling 16 connects impeller 17, and impeller 17 upper ends are stretched in the separator body 9 and are linked into an integrated entity with mill bowl 11.
The course of work of the present utility model is, the coal feedstock in the run coal bin 1 is put on the conveyer 2, upwards carries coal feedstock by the second conveyer belt 21, advances gradient and transmits, and removes on the conveyer 2 so that the large coal feedstock of particle falls back.Then by being transported in the disintegrating machine 4 charging from center coal spout 7 on second conveyor 3 and the second conveyer belt 31.
Coal feedstock falls into internal layer cone bucket 81, in the pipe 12 mill bowls 11 that are injected in the separator body 9 in the Wen, mill by grinding roller 10, form Powdered, outside blower fan and from air inlet 14, dry, coal dust is blown afloat, waft into to discharging chamber 83 from separator body 9 after the coal dust come-up, blow out from discharging opening 84 at last, connect nozzle 5 by pipeline after blowing out, be injected in the combustion chamber 6.
Blower fan and grinding roller 10 all are to be driven by frequency modulation motor 18 in the present embodiment.The whole process of the utility model is to come the control combustion state by the PLC unit.
Concrete control mode realizes by following manner, mounting temperature sensor 22 in combustion chamber 6, the signal that temperature sensor 22 detects is connected in the PLC unit 23, between pulverizer 4 and nozzle 5 sandwich valve 24 is installed, output connecting cleat valve 24 and the frequency modulation motor 18 of PLC unit 23.PLC unit 23 detects the temperature in the combustion chamber 6, then this signal is processed by PLC unit 23, again by the size of PLC unit 23 control sandwich valves, 24 unlatchings and the power of frequency modulation motor 18.Such as at PLC unit 23 inner settings initial temperature one and initial temperature two being arranged, when the actual temperature that detects and initial temperature one and initial temperature two compare, when actual temperature is higher than initial temperature for the moment, sandwich valve 24 is turned down, reduce the inlet amount in the combustion chamber 6, otherwise, sandwich valve 24 is left greatly, increase the inlet amount in the combustion chamber 6.When actual temperature was higher than initial temperature two, with the power reduction of frequency modulation motor 18, the operating efficiency of control pulverizer 4 reduced the discharging of milling again, otherwise the power raising with frequency modulation motor 18 increases the discharging of milling.
Above-described embodiment only is used for explaining inventive concept of the present utility model, but not to the restriction of the utility model rights protection, allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should fall into protection domain of the present utility model.
Claims (10)
1. chain furnace auxiliary combustion equipment that dusts is characterized in that: comprise run coal bin, conveyer, second conveyor, pulverizer, nozzle; The run coal bin that fuel is housed is connected with conveyer, the conveyer that is positioned at lower be positioned at the eminence second conveyor and be connected by the first conveyer belt, second conveyor is carried by second fuel is delivered in the pulverizer, and nozzle is installed in the pulverizer outlet, and the fuel after pulverizing is sprayed in the combustion chamber.
2. a kind of chain furnace as claimed in claim 1 auxiliary combustion equipment that dusts, it is characterized in that: described the first conveyer belt is 30～miter angle.
3. a kind of chain furnace as claimed in claim 1 auxiliary combustion equipment that dusts, it is characterized in that: described feeding hole of pulverizer is lower than second conveyor, and the second conveyer belt is oblique lower state.
4. a kind of chain furnace as claimed in claim 1 auxiliary combustion equipment that dusts, it is characterized in that: described pulverizer comprises center coal spout, separator cover device, separator body, grinding roller, mill bowl; The internal layer cone bucket that nests together inside and outside the separator cover device comprises and outer cone bucket form the discharging chamber between internal layer cone bucket and the outer cone bucket; The center coal spout places in the internal layer cone bucket, and the end opening of internal layer cone bucket is connected with the separator body by managing in the Wen; Blade is installed on the grinding roller, places the rotation of milling of mill bowl, mill bowl is positioned at the separator body that offers air inlet, and air inlet is connected with blower fan, is communicated with the discharging chamber on the separator body.
5. a kind of chain furnace as claimed in claim 4 auxiliary combustion equipment that dusts is characterized in that: offer discharging opening on the described discharging chamber.
6. a kind of chain furnace as claimed in claim 4 auxiliary combustion equipment that dusts is characterized in that: described mill bowl links into an integrated entity with impeller with shaft coupling, dispels the heat in the fuel tank below shaft coupling is immersed in.
7. a kind of chain furnace as claimed in claim 4 auxiliary combustion equipment that dusts, it is characterized in that: described grinding roller and blower fan are driven by the frequency modulation motor.
8. a kind of chain furnace as claimed in claim 1 auxiliary combustion equipment that dusts, it is characterized in that: described pulverizer outlet is connected with nozzle by sandwich valve again.
9. a kind of chain furnace as claimed in claim 1 auxiliary combustion equipment that dusts, it is characterized in that: the PLC centralized control system of this device comprises the temperature sensor that is installed in the combustion chamber, the signal of temperature sensor is input in the PLC control module, the output connecting cleat valve of PLC control module.
10. a kind of chain furnace as claimed in claim 1 auxiliary combustion equipment that dusts, it is characterized in that: described PLC control module connects the frequency modulation motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220289804 CN202647831U (en) | 2012-06-20 | 2012-06-20 | Chain boiler dusting combustion supporting device and programmable logic controller (PLC) centralized control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220289804 CN202647831U (en) | 2012-06-20 | 2012-06-20 | Chain boiler dusting combustion supporting device and programmable logic controller (PLC) centralized control system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN202647831U true CN202647831U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220289804 Expired - Fee Related CN202647831U (en) | 2012-06-20 | 2012-06-20 | Chain boiler dusting combustion supporting device and programmable logic controller (PLC) centralized control system thereof |
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| CN (1) | CN202647831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437817A (en) * | 2014-11-26 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method for reducing number of times of thermal resistor failures at coal milling outlet |
-
2012
- 2012-06-20 CN CN 201220289804 patent/CN202647831U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437817A (en) * | 2014-11-26 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method for reducing number of times of thermal resistor failures at coal milling outlet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150620 |
|
| EXPY | Termination of patent right or utility model |