CN216159085U - Adjusting device for air-fuel ratio of combustor - Google Patents
Adjusting device for air-fuel ratio of combustor Download PDFInfo
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- CN216159085U CN216159085U CN202122265532.6U CN202122265532U CN216159085U CN 216159085 U CN216159085 U CN 216159085U CN 202122265532 U CN202122265532 U CN 202122265532U CN 216159085 U CN216159085 U CN 216159085U
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- fuel ratio
- adjusting valve
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Abstract
The utility model discloses an air-fuel ratio adjusting device of a combustor, which consists of a gas adjusting valve, an air adjusting valve and a PLC controller, wherein the gas adjusting valve and the air adjusting valve are not provided with an air flow meter and a gas flow meter, the gas adjusting valve and the air adjusting valve are provided with adjusting valve openness, the gas adjusting valve, the air adjusting valve and the PLC controller are electrically connected, and the adjusting valve openness of the gas adjusting valve and the air adjusting valve is controlled by the PLC controller. The utility model saves an air flow meter and a gas flow meter, has no problem of inaccurate small flow of the flow meter, realizes the regulation of air-fuel ratio by automatically regulating the opening degrees of the air regulating valve and the gas regulating valve through the PLC controller, and has the advantages of high regulation reaction speed and stable air-fuel ratio.
Description
Technical Field
The utility model relates to a burner, in particular to a regulating device capable of regulating the air-fuel ratio of the burner.
Background
At present, air-fuel ratio of a combustor generally adopts an air flow meter, an air regulating valve, a gas flow meter and a gas regulating valve. The air-fuel ratio of the burner is adjusted by adjusting the flow rates of air and fuel gas respectively through the air adjusting valve and the fuel gas adjusting valve, so that the equipment cost is high; the flow meter has a lower measurement limit, small flow cannot be measured, and the problem of unstable air-fuel ratio caused by inaccurate measurement of small power of the combustor exists; the air flow meter and the gas flow meter are PID regulators, and certain reaction time is required during regulation, so that the problems of low load regulation speed, low accuracy and the like of the combustor are caused.
Disclosure of Invention
In view of the above existing problems, an object of the present invention is to provide a device for adjusting an air-fuel ratio of a burner, which omits an air flow meter and a gas flow meter, automatically adjusts the opening degrees of an air adjusting valve and a gas adjusting valve by a PLC controller to adjust the air-fuel ratio, and has the advantages of fast response speed and stable air-fuel ratio.
The technical scheme adopted by the utility model is as follows: the utility model provides an adjusting device of combustor air-fuel ratio comprises gas governing valve, air regulating valve and PLC controller, does not have air flow meter and gas flowmeter, the gas governing valve with air regulating valve is equipped with the regulating valve opening, gas governing valve, air regulating valve and PLC controller are the electricity and connect, just the regulating valve opening of gas governing valve, air regulating valve is controlled by the PLC controller.
The firepower gears of the burner are multiple gears, and each firepower gear corresponds to the combination of the opening degree of the gas regulating valve and the opening degree of the air regulating valve which are calculated in advance.
The firepower gear has a small number of fine adjustments.
The firepower gear is more than 4.
The utility model is also provided with a touch screen, and the air-fuel ratio of the burner, the opening degree of the regulating valve of the gas regulating valve and the opening degree of the regulating valve of the air regulating valve can be displayed through the touch screen.
The utility model saves an air flow meter and a gas flow meter, has no problem of inaccurate small flow of the flow meter, realizes the regulation of air-fuel ratio by automatically regulating the opening degrees of the air regulating valve and the gas regulating valve through the PLC controller, and has the advantages of high regulation reaction speed and stable air-fuel ratio.
Drawings
FIG. 1 is a flow chart of the present invention;
in the figure, 1, a burner; 2. a gas cut-off valve; 3. a gas regulating valve; 4. an air regulating valve; 5. a combustion fan; 6. a PLC controller; 7. a touch screen.
Detailed Description
The utility model is further illustrated in the following figures and detailed description:
as can be seen from fig. 1, the present invention is a device for adjusting the air-fuel ratio of a burner, which comprises a gas regulating valve, an air regulating valve and a PLC controller, and is free of an air flow meter and a gas flow meter, wherein the gas regulating valve and the air regulating valve are provided with regulating valve openings, the gas regulating valve, the air regulating valve and the PLC controller are electrically connected, and the regulating valve openings of the gas regulating valve and the air regulating valve are controlled by the PLC controller.
When the utility model is designed, the load of the burner is firstly divided into N sections of firepower gears, generally more than 4 sections of firepower gears, the firepower gears can finely adjust the load through small numbers, each firepower gear corresponds to the opening combination of the gas regulating valve and the regulating valve of the air regulating valve which is calculated in advance by a built-in program of the PLC, and then the PLC controls the gas regulating valve and the air regulating valve to the corresponding opening of the regulating valve to realize the change of the firepower gears.
The utility model is also provided with a touch screen, and the air-fuel ratio of the burner, the opening degree of the regulating valve of the gas regulating valve and the opening degree of the regulating valve of the air regulating valve can be displayed through the touch screen.
The utility model can calculate the corresponding opening of the regulating valve through a built-in program of the PLC controller in a pointer addressing mode, and can also calculate the corresponding opening of the regulating valve in advance, and the specific calculation is as follows:
(1) calculating a gas regulating valve:
a = actual fire gear (with decimal point);
b1= integer of actual fire gear (decimal point removed);
c1= B1 firepower gear corresponding gas regulating valve position setting;
d1= B1 the gas regulating valve position corresponding to the next gear;
e1= output gas regulating valve position;
E1= (A-B1) *(D1-C1)+C1。
(2) air adjustment valve calculation:
a = actual fire gear (with decimal point);
b1= integer of actual fire gear (decimal point removed);
c2= B1 fire gear corresponding to the air regulating valve position;
the set air regulating valve position corresponding to the next gear of D2= B1;
e2= output air regulating valve position;
E2= (A-B1) *(D2-C2)+C2。
the utility model saves an air flow meter and a gas flow meter, has no problem of inaccurate small flow of the flow meter, realizes the regulation of air-fuel ratio by automatically regulating the opening degrees of the air regulating valve and the gas regulating valve through the PLC controller, and has the advantages of high regulation reaction speed and stable air-fuel ratio.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (5)
1. An air-fuel ratio adjusting device of a burner is characterized in that: constitute by gas governing valve, air regulating valve and PLC controller, do not have air flow meter and gas flow meter, the gas governing valve with the air regulating valve is equipped with the regulating valve opening, gas governing valve, air regulating valve and PLC controller are the electricity and connect, just the regulating valve opening of gas governing valve, air regulating valve is controlled by the PLC controller.
2. A burner air-fuel ratio adjusting apparatus according to claim 1, characterized in that: the firepower gears of the burner are multiple gears, and each firepower gear corresponds to the combination of the opening degree of the gas regulating valve and the opening degree of the air regulating valve which are calculated in advance.
3. A burner air-fuel ratio adjusting apparatus according to claim 2, characterized in that: the firepower gear has a small number of fine adjustments.
4. A burner air-fuel ratio adjusting apparatus according to claim 2, characterized in that: the firepower gear is more than 4.
5. A burner air-fuel ratio adjusting apparatus according to claim 1, characterized in that: the gas-fuel ratio of the burner, the opening degree of the regulating valve of the gas regulating valve and the opening degree of the regulating valve of the air regulating valve are displayed by the touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122265532.6U CN216159085U (en) | 2021-09-18 | 2021-09-18 | Adjusting device for air-fuel ratio of combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122265532.6U CN216159085U (en) | 2021-09-18 | 2021-09-18 | Adjusting device for air-fuel ratio of combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216159085U true CN216159085U (en) | 2022-04-01 |
Family
ID=80851875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122265532.6U Active CN216159085U (en) | 2021-09-18 | 2021-09-18 | Adjusting device for air-fuel ratio of combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216159085U (en) |
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2021
- 2021-09-18 CN CN202122265532.6U patent/CN216159085U/en active Active
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