CN203264833U - Air channel heating device for coal mill - Google Patents
Air channel heating device for coal mill Download PDFInfo
- Publication number
- CN203264833U CN203264833U CN 201320186371 CN201320186371U CN203264833U CN 203264833 U CN203264833 U CN 203264833U CN 201320186371 CN201320186371 CN 201320186371 CN 201320186371 U CN201320186371 U CN 201320186371U CN 203264833 U CN203264833 U CN 203264833U
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- CN
- China
- Prior art keywords
- air channel
- oil
- fast valve
- coal pulverizer
- signal input
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an air channel heating device for a coal mill. The air channel heating device comprises an electronic igniter and an oil gun which go deep into an air channel of the coal mill, and an air inlet and an oil inlet of the oil gun are connected with an air source and an oil source respectively through an atomizer electromagnetic fast valve and a fuel oil electromagnetic fast valve. The air channel heating device further comprises a PLC (programmable logic controller), wherein a first signal output end, a second signal output end and a third signal output end of the PLC are respectively connected with signal input ends of the electronic igniter, the atomizer electromagnetic fast valve and the fuel oil electromagnetic fast valve, and a first signal input end and a second signal input end of the PLC are respectively connected with an air flow probe and a temperature probe which are arranged in the air channel of the coal mill. The air channel heating device has the characteristics of simple structure, quick starting, low cost, fuel oil conservation and high automation degree and can be widely applied to the technical field of thermal power generation.
Description
Technical field
The utility model relates to the thermal power generating technology field, particularly relates to a kind of coal pulverizer air channel heating apparatus.
Background technology
Domestic heat power plant boiler all obtains heat by burning coal, because the burning-point of coal is higher, so generally all can use the light diesel fuel coal dust that ignites during ignition of the boiler.At present, boiler combustion coal dust used prepares by coal pulverizer, and coal pulverizer need to have at least the hot blast of 150 ℃ can start powder process, this just caused the boiler startup needs a large amount of use light diesel fuel, just start coal pulverizer powder process and drop into coal dust in boiler when hot blast temperature arrives more than 150 ℃ by the time, coal dust after burning progressively substitutes light diesel fuel, and is last until cut off the supply of light diesel fuel.In this course, can a large amount of consume the more expensive light diesel fuels of price, not only cause a large amount of consumption of fuel resource, be unfavorable for that also the thermal power plant controls cost.
The utility model content
The purpose of this utility model is in order to overcome the deficiency of above-mentioned background technology, and a kind of coal pulverizer air channel heating apparatus is provided, have simple in structure, start fast, cost is low, capable of saving fuel oil, characteristics that automaticity is high.
the utility model provides a kind of coal pulverizer air channel heating apparatus, comprise the ignition and the oil gun that go deep in the coal pulverizer air channel, the air inlet of described oil gun is connected with oil sources with source of the gas with the electromagnetic fuel fast valve by atomization gas electromagnetism fast valve respectively with oil-in, also comprise PLC, the first signal output of described PLC, secondary signal output and the 3rd signal output part respectively with ignition, the signal input part of atomization gas electromagnetism fast valve and electromagnetic fuel fast valve is connected, the first signal input of described PLC and secondary signal input respectively be located at the coal pulverizer air channel in the air quantity probe be connected with temp probe.
In technique scheme, also comprise the flame detecting probe of being located in the coal pulverizer air channel, described flame detecting probe is connected with the 3rd signal input part of described PLC.
In technique scheme, the muzzle of described oil gun is fixed with stabilizer.
Coal pulverizer of the present utility model air channel heating apparatus, have following beneficial effect: this device is the wind-warm syndrome of heating coal pulverizer directly, the coal-grinding function can be started at any time, and the wind-warm syndrome that needn't wait until whole boiler could start when reaching 150 ℃, can drop into coal dust in advance in boiler, substitute light fuel oil with coal dust in advance, reduced the dependence to the required light fuel oil of the coal dust that ignites, not only simple in structure, start soon, reduced cost, saved fuel oil, and automaticity is high.
Description of drawings
Fig. 1 is the structural representation of the utility model coal pulverizer air channel heating apparatus.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, but this embodiment should not be construed as restriction of the present utility model.
Referring to Fig. 1, the utility model coal pulverizer air channel heating apparatus comprises ignition 2, oil gun 3, atomization gas electromagnetism fast valve 4, electromagnetic fuel fast valve 5, PLC6, air quantity probe 7, temp probe 8, flame detecting probe 9 and stabilizer 10.
Described ignition 2 and oil gun 3 go deep in coal pulverizer air channel 1, and the air inlet of described oil gun 3 is connected with the oil sources (not shown) with the source of the gas (not shown) with electromagnetic fuel fast valve 5 by atomization gas electromagnetism fast valve 4 respectively with oil-in.Described PLC6(programmable logic controller (PLC)) first signal output 6.1, secondary signal output 6.2 and the 3rd signal output part 6.3 are connected with the signal input part of ignition 2, atomization gas electromagnetism fast valve 4 and electromagnetic fuel fast valve 5 respectively, the first signal input 6.4 of described PLC6 and secondary signal input 6.5 respectively be located at coal pulverizer air channel 1 in air quantity probe 7 be connected with temp probe 8.
Described flame detecting probe 9 is located in coal pulverizer air channel 1, and flame detecting probe 9 is connected with the 3rd signal input part 6.6 of described PLC6.The muzzle of described oil gun 3 is fixed with stabilizer 10.
The job step of described coal pulverizer air channel heating apparatus is as follows: when the coal pulverizer (not shown) need to start powder process, open total air door (not shown) in coal pulverizer air channel 1 to coal pulverizer air channel 1 interior air-supply.when detecting air quantity, air quantity probe 7 surpasses setting value, when simultaneous temperature probe 8 detects wind-warm syndrome also lower than 150 ℃---satisfy the condition that can light a fire and heat, at this moment start PLC6, PLC6 at first unlocking electronic igniter 2 strikes sparks, and then open atomization gas electromagnetism fast valve 4 and electromagnetic fuel fast valve 5, fuel oil and atomizing air are sent in oil gun 3 atomized, the fuel oil mist of oil that has atomized through oil gun 3 is ignited by the electric spark of ignition 2, after the flame of oil inflame is detected by flame detecting probe 9, stabilizer 10 is maintained the statusquo and is kept burning, complete an ignition procedure, flame do not detected as flame detecting probe 9, show that igniting is unsuccessful, PLC6 closes electromagnetic fuel fast valve 5 immediately, stops igniting, wait for the maintenance personal ascertain the reason after point again.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
The content that is not described in detail in this specification belongs to the known prior art of this area professional and technical personnel.
Claims (3)
1. coal pulverizer air channel heating apparatus, comprise the ignition (2) and the oil gun (3) that go deep in coal pulverizer air channel (1), the air inlet of described oil gun (3) is connected with oil sources with source of the gas with electromagnetic fuel fast valve (5) by atomization gas electromagnetism fast valve (4) respectively with oil-in, it is characterized in that: also comprise PLC(6), described PLC(6) first signal output (6.1), secondary signal output (6.2) and the 3rd signal output part (6.3) respectively with ignition (2), atomization gas electromagnetism fast valve (4) is connected with the signal input part of electromagnetic fuel fast valve (5), described PLC(6) first signal input (6.4) and secondary signal input (6.5) respectively be located at coal pulverizer air channel (1) in air quantity probe (7) be connected with temp probe (8).
2. coal pulverizer according to claim 1 air channel heating apparatus, is characterized in that: also comprise the flame detecting probe (9) of being located in coal pulverizer air channel (1), described flame detecting probe (9) and described PLC(6) the 3rd signal input part (6.6) be connected.
3. coal pulverizer according to claim 1 and 2 air channel heating apparatus, it is characterized in that: the muzzle of described oil gun (3) is fixed with stabilizer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320186371 CN203264833U (en) | 2013-04-15 | 2013-04-15 | Air channel heating device for coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320186371 CN203264833U (en) | 2013-04-15 | 2013-04-15 | Air channel heating device for coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203264833U true CN203264833U (en) | 2013-11-06 |
Family
ID=49495327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320186371 Expired - Lifetime CN203264833U (en) | 2013-04-15 | 2013-04-15 | Air channel heating device for coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203264833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223371A (en) * | 2013-04-15 | 2013-07-31 | 刘冰玉 | Coal mill air duct heating device |
-
2013
- 2013-04-15 CN CN 201320186371 patent/CN203264833U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223371A (en) * | 2013-04-15 | 2013-07-31 | 刘冰玉 | Coal mill air duct heating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131106 Effective date of abandoning: 20150902 |
|
| RGAV | Abandon patent right to avoid regrant |