CN202852865U - Hearth air-inducing control system - Google Patents
Hearth air-inducing control system Download PDFInfo
- Publication number
- CN202852865U CN202852865U CN 201220561080 CN201220561080U CN202852865U CN 202852865 U CN202852865 U CN 202852865U CN 201220561080 CN201220561080 CN 201220561080 CN 201220561080 U CN201220561080 U CN 201220561080U CN 202852865 U CN202852865 U CN 202852865U
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- Prior art keywords
- air
- hearth
- pid controller
- inducing
- frequency converter
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Abstract
Provided is a hearth air-inducing control system. The hearth air-inducing control system comprises a feed-forward proportion integration differentiation (PID) controller, a frequency converter and an air-inducing machine. The feed-foreward PID controller is connected with the frequency converter which is connected with the air-inducing machine. A revolution speed sensor is arranged on the air-inducing machine. The feed-forward PID controller tests revolution speed signals of the air-inducing machine and further comprises a pressure sensor. The pressure sensor is placed inside the hearth and is connected with a comparator of the input end of the feed-forward PID controller. The feed-forward PID controller tests pressure signals and is compared with set value of negative pressure and then works out signals which control the frequency converter, so that revolution speed adjustment of the air-inducing machine is achieved. The hearth air-inducing control system can make a judgment and then combines the revolution speed signals of the air-inducing machine after testing the pressures signals in a boiler furnace of the hearth, and therefore revolution speed control of the air-inducing machine is achieved and adjustment of constant effects of the negative pressure in the boiler furnace of the hearth are achieved by sending corresponding control signal to the frequency converter from the feed-forward PID controller. So the control of combustion efficiency of the hearth can be carried out more accurately.
Description
Technical field
The utility model relates to a kind of burner hearth air output control system.
Background technology
The combustion chamber of existing boiler needs gaseous product is discharged after finishing burning, if can not in time discharge the efficient that will reduce subsequent combustion, if but the excessive velocities of discharging then easily with too much the taking away of energy, caused the waste of heat energy.
The utility model content
The purpose of this utility model is under the prerequisite that guarantees the boiler furnace constant negative pressure, the burner hearth air output control system that provides a kind of donkey boiler to burn.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of burner hearth air output control system, comprise feedforward PID controller, frequency converter and air-introduced machine, described feedforward PID controller is connected with frequency converter, described frequency converter is connected with air-introduced machine, described air-introduced machine is provided with speed probe, make described feedforward PID controller detect the tach signal of air-introduced machine, also comprise pressure sensor, described pressure sensor is located at burner hearth inside, pressure sensor is connected with the comparator of feedforward PID controller input, feedforward PID controller detected pressures signal also compares with negative pressure setting value, finally makes the signal of control frequency converter, realizes the adjusting to the air-introduced machine rotating speed.
Burner hearth air output control described in the utility model system, after detecting the pressure signal in the boiler furnace, judge, tach signal in conjunction with air-introduced machine, and then by feedforward PID controller frequency converter is sent corresponding control signal, realization is to the control of air-introduced machine rotating speed, reach the negative pressure homeostatic process of regulating in the boiler furnace, can control more accurately the efficiency of combustion of boiler like this.
Description of drawings
The below is described in further detail the utility model with embodiment with reference to the accompanying drawings.
Fig. 1 is the structure chart of burner hearth air output control described in the utility model system.
The specific embodiment
As shown in Figure 1, the described burner hearth air output control of the utility model embodiment system, comprise feedforward PID controller, frequency converter and air-introduced machine, described feedforward PID controller is connected with frequency converter, described frequency converter is connected with air-introduced machine, described air-introduced machine is provided with speed probe, make described feedforward PID controller detect the tach signal of air-introduced machine, also comprise pressure sensor, described pressure sensor is located at burner hearth inside, and pressure sensor is connected with the comparator of feedforward PID controller input, and feedforward PID controller detected pressures signal and set value with negative pressure compares, finally make the signal of control frequency converter, realize the adjusting to the air-introduced machine rotating speed.
Burner hearth air output control described in the utility model system, after detecting the pressure signal in the boiler furnace, judge, tach signal in conjunction with air-introduced machine, and then by feedforward PID controller frequency converter is sent corresponding control signal, realization is to the control of air-introduced machine rotating speed, reach the negative pressure homeostatic process of regulating in the boiler furnace, can control more accurately the efficiency of combustion of boiler like this.
Claims (1)
1. burner hearth air output control system, it is characterized in that, comprise feedforward PID controller, frequency converter and air-introduced machine, described feedforward PID controller is connected with frequency converter, and described frequency converter is connected with air-introduced machine, and described air-introduced machine is provided with speed probe, make described feedforward PID controller detect the tach signal of air-introduced machine, also comprise pressure sensor, described pressure sensor is located at burner hearth inside, and pressure sensor is connected with the comparator of feedforward PID controller input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561080 CN202852865U (en) | 2012-10-30 | 2012-10-30 | Hearth air-inducing control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561080 CN202852865U (en) | 2012-10-30 | 2012-10-30 | Hearth air-inducing control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202852865U true CN202852865U (en) | 2013-04-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561080 Expired - Fee Related CN202852865U (en) | 2012-10-30 | 2012-10-30 | Hearth air-inducing control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202852865U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868096A (en) * | 2014-03-11 | 2014-06-18 | 莱芜钢铁集团有限公司 | Hearth negative pressure control method and control system |
| CN105134637A (en) * | 2015-09-25 | 2015-12-09 | 上海明华电力技术工程有限公司 | Method for variable frequency and rotor blade joint control of rotor-blade-adjustable induced draft fan |
| CN105201891A (en) * | 2015-09-25 | 2015-12-30 | 上海外高桥发电有限责任公司 | Frequency conversion and movable vane combined control system for movable vane adjustable induced draft fan |
-
2012
- 2012-10-30 CN CN 201220561080 patent/CN202852865U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868096A (en) * | 2014-03-11 | 2014-06-18 | 莱芜钢铁集团有限公司 | Hearth negative pressure control method and control system |
| CN103868096B (en) * | 2014-03-11 | 2016-06-08 | 莱芜钢铁集团有限公司 | A kind of hearth vacuum control method and Controlling System |
| CN105134637A (en) * | 2015-09-25 | 2015-12-09 | 上海明华电力技术工程有限公司 | Method for variable frequency and rotor blade joint control of rotor-blade-adjustable induced draft fan |
| CN105201891A (en) * | 2015-09-25 | 2015-12-30 | 上海外高桥发电有限责任公司 | Frequency conversion and movable vane combined control system for movable vane adjustable induced draft fan |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20161030 |