CN102252341A - Pulverized coal charging controller - Google Patents
Pulverized coal charging controller Download PDFInfo
- Publication number
- CN102252341A CN102252341A CN2011102049894A CN201110204989A CN102252341A CN 102252341 A CN102252341 A CN 102252341A CN 2011102049894 A CN2011102049894 A CN 2011102049894A CN 201110204989 A CN201110204989 A CN 201110204989A CN 102252341 A CN102252341 A CN 102252341A
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- coal dust
- controller
- tachogenerator
- load cell
- control section
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Abstract
The invention discloses a pulverized coal charging controller. The pulverized coal charging controller comprises a weight measuring part, a speed measuring part and a control part. The pulverized coal charging controller can control the revolving speed of a motor of a pulverized coal conveying device for conveying pulverized coal to a boiler according to the instantaneous power consumption in a power grid control system, so that the coal charging speed in the boiler is controlled, the power generation quantity in the power grid is equal to the power consumption, and waste is avoided. The pulverized coal charging controller has the advantages of simple structure, low manufacturing cost and high control precision.
Description
Technical field
The invention discloses a kind of control device, be specifically related to a kind of boiler of power plant that is used for, can adjust the reinforced controller of coal dust of coal dust addition according to instant power consumption in the electrical network.
Background technology
Coal-fired power plant, be to utilize coal to act as a fuel to produce the factory of electric energy, its basic process of production is: coal dust burns in boiler and adds hot water and make into steam, the chemical energy of fuel is transformed into heat energy, the rotation of steam pressure pushing turbine, thermal power transfer becomes mechanical energy, and steam turbine drives the generator rotation then, and mechanical energy is transformed into electric energy.Therefore, add the generated energy that the amount of coal dust can corresponding power plant in the boiler.
Boiler feeding now commonly used is constant, and promptly the generated energy of power plant is constant in a period of time, changes at any time but the power consumption of electric network terminal is a operating position according to the user.For guaranteeing user's power consumption, the generated energy of power plant is greater than the power consumption of electric network terminal, so just produces waste inevitably.Thereby, in energy-intensive today, need a kind of device badly, can adjust the coal dust addition according to instant power consumption in the electrical network.
Summary of the invention
At above-mentioned defective, the object of the invention provides a kind of reinforced controller of coal dust that can adjust the coal dust addition according to instant power consumption in the electrical network.
For achieving the above object, the technical solution used in the present invention is:
A kind of coal dust controller that feeds in raw material, the reinforced controller of described coal dust electrically connects with a grid control system and coal dust conveying device, and the reinforced controller of described coal dust comprises the check weighing part, tests the speed partly and control section,
Described check weighing partly comprises load cell, and described load cell and control section electrically connect, and pressure is changed into the signal of telecommunication and is transferred to control section;
The described part that tests the speed comprises tachogenerator, and described tachogenerator and control section electrically connect, and speed is changed into the signal of telecommunication and is transferred to control section;
Described control section comprises signal amplification unit, information process unit and control module,
Described signal amplification unit electrically connects with described load cell, tachogenerator and information process unit respectively, will amplify from the signal of telecommunication that load cell and tachogenerator receive, and is transferred to information process unit;
Described information process unit electrically connects with signal amplification unit, control module and grid control system respectively, and the signal that signal amplification unit, grid control system are imported calculates, and the result is input to control module;
Described control module electrically connects with information process unit and coal dust conveying device respectively.
In a preferred embodiment of the present invention, described coal dust conveying device comprises conveyer belt and carries motor, described conveying motor and control module electrically connect, and described load cell is installed on described conveyer belt below, and described tachogenerator is installed on carries the motor place.
In a preferred embodiment of the present invention, the described part that tests the speed comprises two and plural load cell.
In a preferred embodiment of the present invention, described tachogenerator is a light sensor.
In a preferred embodiment of the present invention, the reinforced controller of described coal dust also comprises the display part that electrically connects with control section.
The coal dust of the present invention controller that feeds in raw material can be according to the instantaneous power consumption in the grid control system, and control is transported to the motor speed of the coal dust conveying device of boiler, thereby the coal speed in the control boiler makes the generated energy in the electrical network equal power consumption, puts and ends to waste.The coal dust of the present invention controller that feeds in raw material, simple in structure, low cost of manufacture, control accuracy height.
Description of drawings
Fig. 1 is the structured flowchart of a kind of preferred embodiment of the reinforced controller of coal dust of the present invention.
Wherein 1 is the check weighing part, and 2 are the part that tests the speed, and 3 is control section, and 4 is the display part.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.
As shown in Figure 1, the reinforced controller of coal dust of the present invention comprise check weighing part 1, the part that tests the speed 2, control section 3 and display part 4.
Wherein, control section 3 comprises signal amplification unit, information process unit and control module.
Coal dust conveying device commonly used mainly comprises conveyer belt and carries motor, carries motor that driving force is provided, and drives conveyer belt and travels forward, and coal dust is placed on the conveyer belt.
Check weighing part 1 comprises the load cell of the below that is positioned over conveyer belt, and load cell and signal amplification unit electrically connect, and pressure is changed into the signal of telecommunication and is transferred to signal amplification unit.For guaranteeing the accuracy of check weighing, can adopt two or more load cells.
The described part 2 that tests the speed comprises the tachogenerator that is positioned over conveying motor place, and tachogenerator and signal amplification unit electrically connect, and will carry the rotary speed of rotor to change into the signal of telecommunication and be transferred to signal amplification unit.Tachogenerator preferably adopts light sensor.
Signal amplification unit electrically connects with described load cell, tachogenerator and information process unit respectively, will amplify from the signal of telecommunication that load cell and tachogenerator receive, and is transferred to information process unit.
A reinforced controller of coal dust of the present invention and a grid control system electrically connect.
Information process unit electrically connects with signal amplification unit, control module, grid control system and display part 4 respectively, the information of signal amplification unit and grid control system input is calculated, result of calculation is input to control module, and relevant information is input to display part 4.
Control module electrically connects with the conveying motor of information process unit and coal dust conveying device respectively, controls the conveying rotating speed of motor according to the result of information process unit input.
Display part 4 comprises display, and display and information process unit electrically connect, and can show information such as instant coal consumption, instant power consumption and conveying motor speed as required.
The course of work of the reinforced controller of coal dust of the present invention: grid control system is transferred to information process unit with the instantaneous power consumption information of electrical network, information process unit calculates required expectation coal consumption according to formula, the actual coal consumption that calculates with the instant messages that is transmitted by load cell and tachogenerator compares again, and comparing result is transferred to control module.If actual coal consumption is greater than estimating coal consumption, control module control carries motor to slow down rotating speed, reduces coal speed, reduces coal consumption to actual coal consumption and equals to estimate coal consumption; If actual coal consumption is less than estimating coal consumption, then control module control carries motor to increase rotating speed, improves coal speed, increases coal consumption to actual coal consumption and equals to estimate coal consumption.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (5)
1. the reinforced controller of a coal dust, the reinforced controller of described coal dust electrically connects with a grid control system and coal dust conveying device, it is characterized in that, and the reinforced controller of described coal dust comprises the check weighing part, tests the speed partly and control section,
Described check weighing partly comprises load cell, and described load cell and control section electrically connect, and pressure is changed into the signal of telecommunication and is transferred to control section;
The described part that tests the speed comprises tachogenerator, and described tachogenerator and control section electrically connect, and speed is changed into the signal of telecommunication and is transferred to control section;
Described control section comprises signal amplification unit, information process unit and control module,
Described signal amplification unit electrically connects with described load cell, tachogenerator and information process unit respectively, will amplify from the signal of telecommunication that load cell and tachogenerator receive, and is transferred to information process unit;
Described information process unit electrically connects with signal amplification unit, control module and grid control system respectively, and the signal that signal amplification unit, grid control system are imported calculates, and the result is input to control module;
Described control module electrically connects with information process unit and coal dust conveying device respectively.
2. the coal dust according to claim 1 controller that feeds in raw material, it is characterized in that, described coal dust conveying device comprises conveyer belt and carries motor, described conveying motor and control module electrically connect, described load cell is installed on described conveyer belt below, and described tachogenerator is installed on carries the motor place.
3. the coal dust according to claim 1 controller that feeds in raw material is characterized in that, the described part that tests the speed comprises two and plural load cell.
4. the coal dust according to claim 1 controller that feeds in raw material is characterized in that described tachogenerator is a light sensor.
5. the coal dust according to claim 1 controller that feeds in raw material is characterized in that, the reinforced controller of described coal dust also comprises the display part that electrically connects with control section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110204989 CN102252341B (en) | 2011-07-21 | 2011-07-21 | Pulverized coal charging controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110204989 CN102252341B (en) | 2011-07-21 | 2011-07-21 | Pulverized coal charging controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102252341A true CN102252341A (en) | 2011-11-23 |
| CN102252341B CN102252341B (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110204989 Expired - Fee Related CN102252341B (en) | 2011-07-21 | 2011-07-21 | Pulverized coal charging controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN102252341B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697492A (en) * | 2013-12-14 | 2014-04-02 | 苏州市新虞仪表成套设备有限公司 | Pulverized coal charging controller |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177950A (en) * | 1978-02-16 | 1979-12-11 | Westinghouse Electric Corp. | Control for a power plant coal mill pulverizer having feedforward damper positioning |
| JPH094839A (en) * | 1995-06-16 | 1997-01-10 | Babcock Hitachi Kk | Controller for pulverized coal boiler |
| US20040050306A1 (en) * | 2002-09-13 | 2004-03-18 | Manos Milton George | Automatic coal damper |
| CN2783151Y (en) * | 2005-04-13 | 2006-05-24 | 温平 | Fuel conveying contvoller |
| CN101788155A (en) * | 2010-01-22 | 2010-07-28 | 云南电力试验研究院(集团)有限公司 | Control method for coordination and automatic power generation of coal quality self-adaptive thermal power generating unit |
| CN201680402U (en) * | 2009-12-18 | 2010-12-22 | 姜竹军 | Dual-swivel steady flow scattered pulverized coal automatic control burning device |
| CN202153014U (en) * | 2011-07-21 | 2012-02-29 | 苏州市新虞仪表成套设备有限公司 | Powder coal charge control instrument |
-
2011
- 2011-07-21 CN CN 201110204989 patent/CN102252341B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4177950A (en) * | 1978-02-16 | 1979-12-11 | Westinghouse Electric Corp. | Control for a power plant coal mill pulverizer having feedforward damper positioning |
| JPH094839A (en) * | 1995-06-16 | 1997-01-10 | Babcock Hitachi Kk | Controller for pulverized coal boiler |
| US20040050306A1 (en) * | 2002-09-13 | 2004-03-18 | Manos Milton George | Automatic coal damper |
| CN2783151Y (en) * | 2005-04-13 | 2006-05-24 | 温平 | Fuel conveying contvoller |
| CN201680402U (en) * | 2009-12-18 | 2010-12-22 | 姜竹军 | Dual-swivel steady flow scattered pulverized coal automatic control burning device |
| CN101788155A (en) * | 2010-01-22 | 2010-07-28 | 云南电力试验研究院(集团)有限公司 | Control method for coordination and automatic power generation of coal quality self-adaptive thermal power generating unit |
| CN202153014U (en) * | 2011-07-21 | 2012-02-29 | 苏州市新虞仪表成套设备有限公司 | Powder coal charge control instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697492A (en) * | 2013-12-14 | 2014-04-02 | 苏州市新虞仪表成套设备有限公司 | Pulverized coal charging controller |
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| CN102252341B (en) | 2013-01-09 |
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Granted publication date: 20130109 Termination date: 20130721 |