CN202403277U - Blower supply air rate control system for boiler burner - Google Patents
Blower supply air rate control system for boiler burner Download PDFInfo
- Publication number
- CN202403277U CN202403277U CN2012200011479U CN201220001147U CN202403277U CN 202403277 U CN202403277 U CN 202403277U CN 2012200011479 U CN2012200011479 U CN 2012200011479U CN 201220001147 U CN201220001147 U CN 201220001147U CN 202403277 U CN202403277 U CN 202403277U
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- fuel
- signal
- plc
- frequency converter
- control system
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Abstract
The utility model relates to a blower supply air rate control system for a boiler burner in the field of boiler burners. According to the control system, the output ends of a fuel signal detector and a fuel signal setting device are connected to the input end of a programmable logic controller (PLC); the output end of the PLC is respectively connected with the input ends of a servo motor and a frequency converter; the output end of the servo motor is connected with a fuel valve; and the output end of the frequency converter is connected with a blower motor. The fuel signal detector sends a fuel feed rate signal to the PLC, the servo motor controls a fuel feed rate through the fuel valve, a signal detection unit sends the fuel feed rate signal to the PLC, and the PLC performs comparison operation on the fuel feed rate signal and a signal input by the fuel signal setting device and respectively controls the fuel valve and a blower to run through the servo motor and the frequency converter, so that blast volume is automatically matched with the fuel feed rate, tail gas emission is stable, the phenomenon that a mechanism is corroded by generated condensate is avoided, electric energy is saved, and noise is reduced.
Description
Technical field
The utility model relates to a kind of boiler-burner, particularly a kind of boiler-burner air blast air intake amount control system.
Background technology
Traditional air blast that boiler-burner is joined is forced-air blast all; Air blast is in the state that runs up under a kind of same frequency all the time; Intake is generally regulated control through the mechanical type air door of installing on the boiler air inlet, the aperture of coming damper through servomotor control link mechanism.Its weak point is: this control mode can not make accurately matees between fuel duty and the wind supply quantity, thereby can not guarantee the abundant burning of fuel, makes that also boiler exhaust gas discharging fluctuation is big, can not stablize; And because the Cryogenic air in the external environment condition is when air blast gets into the air inlet duct of boiler; Cold air burning is insufficient to make the generation condensation of meeting of warm-humid air in cold air and the boiler internal air channel; Make the connecting rod be installed in the mechanical type regulating device of air door on the air channel, baffle plate, axis hole cooperation etc. locate to hang water and corrosion; Long-time use can cause each body function to break down, and influence is normally used; Adopt the aperture of control air door to regulate air quantity, blower fan is all the time with the rated speed operation, and when the load variations of boiler, the electric energy that blower fan uses can not change, and causes waste of electric energy.
The utility model content
The purpose of the utility model is; Overcome the problem that exists in the prior art, a kind of boiler-burner air blast air intake amount control system is provided, improve the automaticity of burner intake; Make the amount of feeding of air blast intake and fuel mate automatically, and saves energy.
For solving above technical problem; The boiler-burner air blast air intake amount control system that the utility model provided; Comprise fuel signal setting apparatus, fuel signal detector, PLC, servomotor and frequency converter; The output of said fuel signal detector and said fuel signal setting apparatus inserts the input of PLC; The output of said PLC is connected with the input of said servomotor and frequency converter respectively, and the output of said servomotor is connected with the fuel valve of control fuel feed amount, and the output of said frequency converter is connected with blower motor; Said fuel signal detector is installed on the said servomotor and with fuel feed amount signal and sends to said PLC.
With respect to prior art; The utility model has been obtained following beneficial effect: servomotor is through fuel valve control fuel feed amount; The detecting signal unit that is installed on the servomotor sends to PLC with detected fuel feed amount signal; PLC compares computing with the signal of fuel feed amount signal and the input of fuel signal setting apparatus; Export control signal again to servomotor and frequency converter, control the operation of fuel valve and blower motor respectively, thereby realize the automatic coupling of air blast intake and fuel feed amount.Regulate the operating frequency of blower motor through frequency converter; Make air blast realize soft start; The fuel duty precise proportioning that the wind supply quantity of air blast and boiler are required can make boiler reach best efficiency of combustion, makes that the exhaust emissions amount is more stable; The mechanical mechanism corrosion of avoiding cold air to burn insufficient generation condensed water and causing has improved the reliability when each mechanism uses; Electric energy has been practiced thrift in the frequency control of blower motor, and has reduced the noise that air blast is produced under running status.
As the preferred version of the utility model, said fuel signal detector is a potentiometer.The signal measurement precision of potentiometer is higher, and it is more convenient to make zero.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation, accompanying drawing only provides reference and explanation usefulness, and is non-in order to restriction the utility model.
Fig. 1 is the schematic diagram of the utility model boiler-burner air blast air intake amount control system.
The specific embodiment
As shown in Figure 1; The boiler-burner air blast air intake amount control system of the utility model; Comprise fuel signal setting apparatus, fuel signal detector, PLC, servomotor and frequency converter, the output of fuel signal detector and fuel signal setting apparatus inserts the input of PLC, and the output of PLC is connected with the input of servomotor and frequency converter respectively; The output of servomotor is connected with the fuel valve of control fuel feed amount, and the output of frequency converter is connected with blower motor; The fuel signal detector is installed on the servomotor and with fuel feed amount signal and sends to PLC.
During work; Servomotor is through fuel valve control fuel feed amount; The detecting signal unit that is installed on the servomotor sends to PLC with detected fuel feed amount signal, and PLC compares computing with the signal of fuel feed amount signal and the input of fuel signal setting apparatus, exports control signal again to servomotor and frequency converter; Control the operation of fuel valve and blower motor respectively, thereby realize the automatic coupling of air blast intake and fuel feed amount.
More than be merely the preferable possible embodiments of the utility model, non-so the limitation the utility model scope of patent protection.Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (2)
1. boiler-burner air blast air intake amount control system; It is characterized in that: comprise fuel signal setting apparatus, fuel signal detector, PLC, servomotor and frequency converter; The output of said fuel signal detector and said fuel signal setting apparatus inserts the input of PLC; The output of said PLC is connected with the input of said servomotor and frequency converter respectively; The output of said servomotor is connected with the fuel valve of control fuel feed amount, and the output of said frequency converter is connected with blower motor; Said fuel signal detector is installed on the said servomotor and with fuel feed amount signal and sends to said PLC.
2. boiler-burner air blast air intake amount control system according to claim 1, it is characterized in that: said fuel signal detector is a potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200011479U CN202403277U (en) | 2012-01-04 | 2012-01-04 | Blower supply air rate control system for boiler burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200011479U CN202403277U (en) | 2012-01-04 | 2012-01-04 | Blower supply air rate control system for boiler burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202403277U true CN202403277U (en) | 2012-08-29 |
Family
ID=46700921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200011479U Expired - Lifetime CN202403277U (en) | 2012-01-04 | 2012-01-04 | Blower supply air rate control system for boiler burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202403277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968414A (en) * | 2014-05-22 | 2014-08-06 | 北京蓝天瑞德环保技术股份有限公司 | Automatic control device of basement boiler room air inlet amount |
-
2012
- 2012-01-04 CN CN2012200011479U patent/CN202403277U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968414A (en) * | 2014-05-22 | 2014-08-06 | 北京蓝天瑞德环保技术股份有限公司 | Automatic control device of basement boiler room air inlet amount |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |