CN202082949U - Hearth flame monitoring device - Google Patents
Hearth flame monitoring device Download PDFInfo
- Publication number
- CN202082949U CN202082949U CN2011200969731U CN201120096973U CN202082949U CN 202082949 U CN202082949 U CN 202082949U CN 2011200969731 U CN2011200969731 U CN 2011200969731U CN 201120096973 U CN201120096973 U CN 201120096973U CN 202082949 U CN202082949 U CN 202082949U
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- module
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- amplifier
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Abstract
A hearth flame monitoring device is suitable for flame detection of gas furnaces or pulverized coal furnaces, includes flame detectors and amplifiers, and is characterized in that two flame detectors are installed on each burner; output of each flame detector is connected with each amplifier; output of each amplifier is connected with an interlock protector; and a fuel cut-off valve is controlled by the interlock protector. The hearth flame monitoring device can avoid protection mis-operation caused by failures of the detectors, thereby improving stability of the furnace operation and reliability of the interlock protection of the gas furnace, reducing cost on second time blowing-in due to furnace mis-shutdown, and improving stability of a main vapor system and a coal gas system.
Description
Technical field
The utility model is specifically related to a kind of furnace flame monitoring device, is applicable to that the flame of gas burner or coal-powder boiler detects.
Background technology
Whether the fired state of gas burner or coal-powder boiler is stable, and direct relation boiler body and staff's personal safety, therefore, must carry out the detection of on-line continuous to the fired state of coal gas, carries out interlock protection simultaneously, to guarantee the safe operation of gas burner.And often only establish a flame-detecting probe in the present detection system combustion position is detected, when the fault of detector own, will cause the interlock protection misoperation, influence the stable operation of boiler at a burner.
Summary of the invention
The utility model provides a kind of furnace flame checkout gear that can avoid the interlock protection misoperation.
The utility model comprises flame detector, amplifier, it is characterized in that being equipped with on each burner 2 flame detectors, and the output of flame detector connects amplifier, and the output of amplifier connects the interlock protection device, interlock protection device control fuel cutoff valve.
The interlock protection device is made up of DI module, two communication modules, CPU, DO module, power supplys; the output of amplifier connects the input of DI module; the output of DI module connects the input of a communication module; communication module connects CPU; CPU connects another communication module; this communication module connects the DO module, and the output of DO module connects fuel cutoff valve.
After flame detector detects flare up fire, through the processing of amplifier, become analog signal again and on instrument or DCS, show earlier, simultaneously flame status is judged, status signal is sent to the interlock protection system protect.2 flame detectors are installed on each burner; the protection misoperation that causes in the time of just avoiding because of the fault of detector own; thereby improved the stability of boiler operatiopn; improved the reliability of gas burner interlock protection; reduced because mistakenly stop stove and the expense of blow-on once more, strengthened the stability of main steam system and coal gas system.
Description of drawings:
Fig. 1 is the block diagram of the utility model embodiment.
Among the figure, 1, flame detector, 2, flame detector, 3, amplifier, 4, amplifier, 5, the DI module, 6, communication module, 7, CPU, 8, power supply, 9, communication module, 10, the DO module, 11, fuel cutoff valve.
The specific embodiment
Embodiment: shown in Figure 1; a support is welded on each burner; 2 flame detectors 1,2 are installed on the support; with holding wire the output of flame detector 1 is connected the input of amplifier 3 again; the output of flame detector 2 connects the input of amplifier 4; the output of amplifier 3,4 connects the interlock protection device, interlock protection device control fuel cutoff valve 11.
The interlock protection device is made up of DI module 5, two communication modules 6,9, CPU7, DO module 10, power supplys 8; the output of amplifier 3,4 connects the input of DI module 5; the output of DI module 5 connects the input of communication module 6; communication module 6 connects CPU7; CPU7 connects communication module 9; communication module 9 connects DO module 10, and the output of DO module 10 connects fuel cutoff valve 11.
In the present embodiment, flame detector 1,2 adopts the 85UVF2-1K3EX type; Amplifier 3,4 adopts 85UVF2-1K3EX; The DO module adopts ADV551-P00; The DI module adopts ADV151-P00; CPU adopts AF10D-S41201/ATDOC; Communication module 6,9 adopts CP451-10/S2.
Claims (2)
1. furnace flame monitoring device; comprise flame detector, amplifier, it is characterized in that being equipped with on each burner 2 flame detectors, the output of flame detector connects amplifier; the output of amplifier connects the interlock protection device, interlock protection device control fuel cutoff valve.
2. a kind of furnace flame monitoring device according to claim 1; it is characterized in that the interlock protection device is made up of DI module, two communication modules, CPU, DO module, power supplys; the output of amplifier connects the input of DI module; the output of DI module connects the input of a communication module; communication module connects CPU; CPU connects another communication module, and this communication module connects the DO module, and the output of DO module connects fuel cutoff valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200969731U CN202082949U (en) | 2011-04-06 | 2011-04-06 | Hearth flame monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200969731U CN202082949U (en) | 2011-04-06 | 2011-04-06 | Hearth flame monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202082949U true CN202082949U (en) | 2011-12-21 |
Family
ID=45343575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200969731U Expired - Fee Related CN202082949U (en) | 2011-04-06 | 2011-04-06 | Hearth flame monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202082949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499958A (en) * | 2013-09-30 | 2014-01-08 | 中国神华能源股份有限公司 | Method and device for controlling MFT (Main Fuel Trip) |
-
2011
- 2011-04-06 CN CN2011200969731U patent/CN202082949U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499958A (en) * | 2013-09-30 | 2014-01-08 | 中国神华能源股份有限公司 | Method and device for controlling MFT (Main Fuel Trip) |
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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: 20111221 Termination date: 20170406 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |