CN205782896U - A kind of power boiler breeze burner burnout protection system - Google Patents
A kind of power boiler breeze burner burnout protection system Download PDFInfo
- Publication number
- CN205782896U CN205782896U CN201620738787.6U CN201620738787U CN205782896U CN 205782896 U CN205782896 U CN 205782896U CN 201620738787 U CN201620738787 U CN 201620738787U CN 205782896 U CN205782896 U CN 205782896U
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- China
- Prior art keywords
- coal
- burner
- coal burner
- temperature sensor
- dcs system
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Abstract
The utility model discloses a kind of power boiler breeze burner burnout protection system, including on-site control, DCS system, it is located at the first temperature sensor at bias pulverized coal segregation apparatus in coal burner, and it is located at the second temperature sensor at coal burner nozzles, the outfan of the first temperature sensor is connected with the input of the input of on-site control and DCS system 7, the outfan of the second temperature sensor is connected with the input of the input of on-site control and DCS system, the outfan of on-site control is connected with the control end of the electric shutting-door on coal burner inlet tube, DCS system is connected with the electric shutting-door on coal burner inlet tube, coal burner can be protected by this system when there is nearly burning and interior burning, ensure coal burner safe operation.
Description
Technical field
This utility model relates to a kind of burnout protection system, is specifically related to a kind of power boiler breeze burner burnout protection
System.
Background technology
Coal burner is the nucleus equipment of power boiler burning system, for by wind powder mixture (Pulverized Coal and heat
Air mixture) it is injected into burner hearth, complete fuel combustion process.Coal burner is mainly by primary air piping, housing, bias pulverized coal
Segregation apparatus, nozzles four part form.The mixture of coal dust with hot-air is delivered to boiler from coal pulverizer outlet by primary air piping
Coal burner on body, the wind powder mixture of entrance burner, under the effect of coal dust disconnecting gear, becomes concentration different
Two strands or multiply wind powder air-flow, eventually pass through nozzles and be injected into burner hearth, combustion heat release.
In recent years, along with national environmental protection policy is tightened up increasingly, high parameter, large sized unit are excellent because having high-efficiency cleaning etc.
Point, is increasingly becoming the main force of thermal power generation.Fired power generating unit Large Copacity to be realized, high parameter, it is necessary to have higher in ensureing stove
Heat load intensity, the coal burner quantity that therefore large-sized unit is arranged is many, and density is big.During actual motion, each coal burner by
Resistance in institute's connecting leg road is different, and the First air speed of each nozzles ejection there are differences, and flow velocity is little or coking phenomenon occurs
Burner, easily occur wind powder air-flow burn near nozzles (closely burn) even burn at burner internal the situation of (interior burning),
This can cause burner nozzles high temperature deformation, and bias pulverized coal segregation apparatus burns so that coal burner loss of function, serious prestige
The safe operation of side of body boiler of power plant.The most domestic most of station boilers put into operation, its coal burner is all not provided with specially
The detection protection system preventing problems such as " nearly burning, interior burnings " of door, this makes the safe operation of burner face a severe test, also
The stable operation making unit faces greater risk.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, it is provided that a kind of power boiler breeze burning
Device burnout protection system, coal burner can be protected by this system when there is nearly burning and interior burning, it is ensured that coal dust firing
Device safe operation.
For reaching above-mentioned purpose, power boiler breeze burner burnout protection system described in the utility model includes on the spot
Switch board, DCS system, it is located in coal burner the first temperature sensor at bias pulverized coal segregation apparatus and is located at coal
The second temperature sensor at powder burner nozzles, the outfan of the first temperature sensor and the input of on-site control and
The input of DCS system is connected, the outfan of the second temperature sensor and the input of on-site control and DCS system defeated
Entering end to be connected, the outfan of on-site control is connected with the control end of the electric shutting-door on coal burner inlet tube,
DCS system is connected with the electric shutting-door on coal burner inlet tube.
Described on-site control and DCS system are respectively connected with display.
Described on-site control connects acousto-optic alarm.
DCS system connects alarm.
This utility model has the advantages that
This utility model power boiler breeze burner burnout protection system operationally, is examined by the first temperature sensor
Surveying the temperature signal at bias pulverized coal segregation apparatus in coal burner, on-site control is according to bias pulverized coal in coal burner
Temperature signal at segregation apparatus judges the relation between heating rate and the preset value of temperature at bias pulverized coal segregation apparatus, so
According to the result judged, electric shutting-door on coal burner inlet tube is controlled afterwards, it is achieved in coal burner sends
During burning situation, coal burner is protected；The temperature at coal burner nozzles is monitored in real time by the second temperature sensor
Signal, according to the temperature signal at coal burner nozzles, on-site control judges whether coal burner sends and closely burns phenomenon,
When coal burner occurs nearly burning phenomenon, then close the electric shutting-door on coal burner inlet tube, it is achieved coal dust is fired
Burner is protected, it is ensured that coal burner safe operation, and DCS system reminds operations staff to break down simultaneously, simple in construction,
Easy to operate, safety is high, has wide application space.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Wherein, 1 it is electric shutting-door, 2 is bias pulverized coal segregation apparatus, 3 is nozzles, 4 is the second temperature sensor, 5 is
First temperature sensor, 6 be on-site control, 7 for DCS system.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
With reference to Fig. 1, power boiler breeze burner burnout protection system described in the utility model includes on-site control
6, DCS system 7, be located in coal burner the first temperature sensor 5 at bias pulverized coal segregation apparatus 2 and be located at coal dust
The second temperature sensor 4 at burner nozzles 3, the outfan of the first temperature sensor 5 and the input of on-site control 6 and
The input of DCS system 7 is connected, the outfan of the second temperature sensor 4 and the input of on-site control 6 and DCS system 7
Input be connected, the control end phase of the outfan of on-site control 6 and the electric shutting-door 1 on coal burner inlet tube
Connecting, DCS system 7 is connected with the electric shutting-door 1 on coal burner inlet tube.
It should be noted that described on-site control 6 and DCS system 7 are respectively connected with display；On-site control 6 connects
Acousto-optic alarm；DCS system 7 connects alarm.
Specific works process of the present utility model is:
During coal burner work, the electric shutting-door 1 on coal burner inlet tube is in "On" state, primary wind and powder
In air-flow bias pulverized coal segregation apparatus 2 in coal burner inlet tube enters coal burner, this bias pulverized coal separates dress
Put and at 2, be provided with some first temperature sensors 5, measured in real time inside coal burner by described first temperature sensor 5
Temperature signal, and the temperature signal within coal burner is forwarded in DCS system 7 and on-site control 6, operations staff
The real-time supervision to coal burner interior temperature signal can be realized, when coal burner interior temperature signal by display
When occurring abnormal, then close the electric shutting-door 1 on coal burner inlet tube, fuel shutoff supply, coal burner is entered
Row Shut-down Protection, such as, when " interior burning " situation of generation, breeze airflow burns at coal burner internal fires, bias pulverized coal
Temperature at segregation apparatus 2 raises the most rapidly, the first temperature sensor 5 Real-time Collection bias pulverized coal segregation apparatus 2
The temperature signal at place, and the temperature signal at described bias pulverized coal segregation apparatus 2 is forwarded in on-site control 6, control on the spot
Cabinet 6 processed judges that at bias pulverized coal segregation apparatus 2, whether the heating rate of temperature is more than or equal to preset value, when bias pulverized coal separates dress
When putting at 2 the heating rate of temperature more than or equal to preset value, then send sound and light alarm signal, and coal burner entrance will be controlled
Electric shutting-door 1 on pipe is closed, fuel shutoff supply, it is achieved coal burner Shut-down Protection；Meanwhile, DCS system 7 obtains coal
Electric shutting-door 1 off state on powder burner inlet tube, and send alarm signal by alarm, remind operations staff to check
This burner.
The nozzles 3 of coal burner are just to burner hearth, and the nozzles 3 of coal burner are provided with the second temperature sensor 4, and second
Temperature sensor 4 obtains the temperature signal on coal burner nozzles 3 in real time, and by the temperature on described coal burner nozzles 3
Degree signal is forwarded to DCS system 7 and on-site control 6, and operations staff can be realized coal burner nozzles 3 by display
The supervision of upper temperature, when the temperature on coal burner nozzles 3 occurs abnormal, on-site control 6 controls coal burner and enters
Electric shutting-door 1 on mouth pipe is closed, and disables this coal burner.Such as, when there is " closely burning " situation, breeze airflow is at coal
Burning near the nozzles 3 of powder burner, significantly raised in the temperature short time causing coal burner nozzles 3, on-site control 6
Judge on coal burner nozzles 3, whether the heating rate of temperature is more than according to the temperature signal on coal burner nozzles 3
In preset value, when on coal burner nozzles 3, the heating rate of temperature is more than or equal to preset value, on-site control 6 controls coal
Electric shutting-door 1 on powder burner inlet tube is closed, fuel shutoff supply, disables this coal burner, controls on the spot simultaneously
Cabinet 6 controls to send sound and light alarm by audible-visual annunciator；DCS system 7 obtains electronic shutoff on coal burner inlet tube simultaneously
The off state of door 1, and send alarm signal by alarm, remind operations staff that this coal burner is checked.
Claims (4)
1. a power boiler breeze burner burnout protection system, it is characterised in that include on-site control (6), DCS system
(7), it is located at first temperature sensor (5) at bias pulverized coal segregation apparatus (2) place in coal burner and is located at coal dust firing
The input of second temperature sensor (4) at device nozzles (3) place, the outfan of the first temperature sensor (5) and on-site control (6)
The input of end and DCS system (7) is connected, the outfan of the second temperature sensor (4) and the input of on-site control (6)
And the input of DCS system (7) is connected, the outfan of on-site control (6) and the electronic pass on coal burner inlet tube
The control end of disconnected door (1) is connected, and DCS system (7) is connected with the electric shutting-door (1) on coal burner inlet tube.
Power boiler breeze burner burnout protection system the most according to claim 1, it is characterised in that described control on the spot
Cabinet processed (6) and DCS system (7) are respectively connected with display.
Power boiler breeze burner burnout protection system the most according to claim 1, it is characterised in that described control on the spot
Cabinet processed (6) connects acousto-optic alarm.
Power boiler breeze burner burnout protection system the most according to claim 1, it is characterised in that DCS system (7)
Connect and have alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620738787.6U CN205782896U (en) | 2016-07-13 | 2016-07-13 | A kind of power boiler breeze burner burnout protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620738787.6U CN205782896U (en) | 2016-07-13 | 2016-07-13 | A kind of power boiler breeze burner burnout protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205782896U true CN205782896U (en) | 2016-12-07 |
Family
ID=58121896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620738787.6U Expired - Fee Related CN205782896U (en) | 2016-07-13 | 2016-07-13 | A kind of power boiler breeze burner burnout protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205782896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184222A (en) * | 2021-10-11 | 2022-03-15 | 华能(浙江)能源开发有限公司玉环分公司 | Powder accumulation fire prevention detection method and device for pulverized coal pipe |
-
2016
- 2016-07-13 CN CN201620738787.6U patent/CN205782896U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184222A (en) * | 2021-10-11 | 2022-03-15 | 华能(浙江)能源开发有限公司玉环分公司 | Powder accumulation fire prevention detection method and device for pulverized coal pipe |
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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: 20161207 Termination date: 20180713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |