CN203629346U - Heating furnace variable frequency control system - Google Patents
Heating furnace variable frequency control system Download PDFInfo
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- CN203629346U CN203629346U CN201320778490.9U CN201320778490U CN203629346U CN 203629346 U CN203629346 U CN 203629346U CN 201320778490 U CN201320778490 U CN 201320778490U CN 203629346 U CN203629346 U CN 203629346U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000004069 differentiation Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a heating furnace variable frequency control system, which is designed, aiming at the problem that in the prior art, the energy consumption of a heating furnace pressure control system using a regulating valve for adjusting the resistance is overhigh. The heating furnace variable frequency control system comprises an induced draft fan, wherein the induced draft fan is connected with a frequency converter which is used for carrying out variable frequency control on the induced draft fan; the induced draft fan is arranged at the air outlet of a hearth of a heating furnace; an air blower is arranged at the air inlet of the hearth; an air volume sensor is connected with the air blower; the air volume sensor is used for transmitting an air volume signal to a PID (Proportion Integration Differentiation) controller; the PID controller is connected with the input end of a rotating speed adjustor; the output end of the rotating speed adjustor is connected with the induced draft fan. By using the heating furnace variable frequency control system, the investment is reduced, the operating expense is reduced, and the remoulding to the existing system is facilitated.
Description
Technical field
The utility model relates to heater control system field, relates in particular to a kind of heating furnace frequency conversion control pressurer system.
Background technology
At present, in the pressure regulation control system of heating furnace, its governor motion is mainly completed by control valve, be that to be equipped with frequency converting induced draft fan be mainly also as the pressure regulating device before soft start or valve, no matter be as soft start or as the pressure regulating device before valve, the resistance that remains in essence high energy consumption regulates method.
Utility model content
For the problems referred to above, the utility model provides a kind of and can reduce investment outlay, saves the heating furnace frequency conversion control pressurer system of operating cost.
For achieving the above object, the utility model heating furnace frequency conversion control pressurer system, comprise air-introduced machine, described air-introduced machine is connected with the frequency converter that described air-introduced machine is carried out to VFC, described air-introduced machine is located at the air outlet of heating furnace burner hearth, the air inlet of described burner hearth is provided with air blast, described air blast is connected with air flow sensor, air volume signal is transferred to PID controller by described air flow sensor, described PID controller is connected with the input of speed regulator, and the output of described speed regulator is connected with described air-introduced machine.
Further, described air-introduced machine porch is provided with louver valve.
Further, described louver valve is connected with the by-pass cock that regulates described louver valve aperture.
Particularly, described louver valve is provided with a fluid calculator.
Particularly, described air-introduced machine is provided with a fluid calculator.
The utility model heating furnace frequency conversion control pressurer system, speed change by the described frequency converter that is connected with described air-introduced machine regulates, the rotating speed of described air-introduced machine is changed, under the acting in conjunction of described air-introduced machine and described air blast, furnace pressure is changed, thereby the pressure that completes heating furnace regulates, adopt control valve to carry out compared with pressure controlled control system with prior art, the utility model simplified existing system equipment, reduce investment outlay, save operation and use, be convenient to existing system to transform.
Accompanying drawing explanation
Fig. 1 is the utility model heating furnace frequency conversion control pressurer system structure chart.
The specific embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figure 1, the utility model heating furnace frequency conversion control pressurer system, comprise air-introduced machine, described air-introduced machine is connected with the frequency converter that described air-introduced machine is carried out to VFC, described air-introduced machine is located at the air outlet of heating furnace burner hearth, the air inlet of described burner hearth is provided with air blast, described air blast is connected with air flow sensor, air volume signal is transferred to PID controller by described air flow sensor, described PID controller is connected with the input of speed regulator, and the output of described speed regulator is connected with described air-introduced machine.
The utility model heating furnace frequency conversion control pressurer system, described air-introduced machine porch is provided with louver valve, and described louver valve is connected with the by-pass cock that regulates described louver valve aperture.
The utility model heating furnace frequency conversion control pressurer system, described louver valve is provided with a fluid calculator, and described air-introduced machine is provided with a fluid calculator.
When described heating furnace frequency conversion control pressurer system work, first regulate the aperture of described louver valve by described manual adjustments switch, make described air-introduced machine reach the suitable air quantity under power frequency shape body, the aperture of described louver valve is mainly calculated by the fluid calculation device arranging on described louver valve, the adjusting of the aperture of described louver valve is only used as fine setting, or pipe parameter uses while changing, after completing, the regulation of described louver valve will no longer change.The automatic pressure control of heating furnace is completed by the frequency control of air-introduced machine described in described Frequency Converter Control, described air-introduced machine is under the regulating action of described frequency converter, the rotating speed of described air-introduced machine is changed, thereby change the pressure in described heating furnace burner hearth, described air blast is also to described burner hearth effect, described air blast passes to described PID controller to the air volume signal of described burner hearth by described air flow sensor, as the feed-forward signal of described PID controller, described PID controller is revised the rotating speed preset value of described air-introduced machine simultaneously, and then regulate the rotating speed of described air-introduced machine, under the acting in conjunction of described air-introduced machine and described air blast, complete the pressure of heating furnace is regulated and controlled.
The utility model heating furnace frequency conversion control pressurer system; adopt variable frequency adjustment; can save the investment of a control valve; use variable frequency adjustment both can avoid the pipeline pressure rapid drawdown that rises sharply, thereby protection pipeline can avoid again air-introduced machine in the time of underload, to occur surge; extension device service life; the most important thing is, variable frequency adjustment replaces the resistance of control valve to regulate 40% left and right of can economizing on electricity, and greatly reduces operating cost.
The utility model heating furnace frequency conversion control pressurer system, has simplified the equipment of existing system, and mechanism arranges except using variable frequency adjustment air-introduced machine, without other governor motions, thereby save and build and safeguard investment, save operating cost, be convenient to existing system to transform.
Above; it is only preferred embodiment of the present utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.
Claims (5)
1. a heating furnace frequency conversion control pressurer system, it is characterized in that: comprise air-introduced machine, described air-introduced machine is connected with the frequency converter that described air-introduced machine is carried out to VFC, described air-introduced machine is located at the air outlet of heating furnace burner hearth, the air inlet of described burner hearth is provided with air blast, described air blast is connected with air flow sensor, air volume signal is transferred to PID controller by described air flow sensor, described PID controller is connected with the input of speed regulator, and the output of described speed regulator is connected with described air-introduced machine.
2. heating furnace frequency conversion control pressurer system according to claim 1, is characterized in that: described air-introduced machine porch is provided with louver valve.
3. heating furnace frequency conversion control pressurer system according to claim 2, is characterized in that: described louver valve is connected with the by-pass cock that regulates described louver valve aperture.
4. heating furnace frequency conversion control pressurer system according to claim 2, is characterized in that: described louver valve is provided with a fluid calculator.
5. heating furnace frequency conversion control pressurer system according to claim 1, is characterized in that: described air-introduced machine is provided with a fluid calculator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778490.9U CN203629346U (en) | 2013-11-29 | 2013-11-29 | Heating furnace variable frequency control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778490.9U CN203629346U (en) | 2013-11-29 | 2013-11-29 | Heating furnace variable frequency control system |
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| CN203629346U true CN203629346U (en) | 2014-06-04 |
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| CN201320778490.9U Expired - Lifetime CN203629346U (en) | 2013-11-29 | 2013-11-29 | Heating furnace variable frequency control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006408A (en) * | 2014-06-09 | 2014-08-27 | 盐城工学院 | Control method for low-nitrogen combustion of coal-fired boiler |
| CN104075587A (en) * | 2014-06-27 | 2014-10-01 | 中机中联工程有限公司 | Temperature stabilization and control method in sand regenerative furnace |
| CN106152785A (en) * | 2016-09-26 | 2016-11-23 | 武汉科技大学 | The heating furnace of a kind of Ore microwave treatment and using method thereof |
| CN108256265A (en) * | 2017-11-02 | 2018-07-06 | 中冶华天南京电气工程技术有限公司 | H profile steel base Furnace Production Process mathematical model modeling method |
-
2013
- 2013-11-29 CN CN201320778490.9U patent/CN203629346U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006408A (en) * | 2014-06-09 | 2014-08-27 | 盐城工学院 | Control method for low-nitrogen combustion of coal-fired boiler |
| CN104006408B (en) * | 2014-06-09 | 2016-07-13 | 盐城工学院 | A kind of control method of low nitrogen burning for fire coal boiler |
| CN104075587A (en) * | 2014-06-27 | 2014-10-01 | 中机中联工程有限公司 | Temperature stabilization and control method in sand regenerative furnace |
| CN104075587B (en) * | 2014-06-27 | 2016-03-23 | 中机中联工程有限公司 | A kind of sand regenerating furnace in-furnace temperature stable control method |
| CN106152785A (en) * | 2016-09-26 | 2016-11-23 | 武汉科技大学 | The heating furnace of a kind of Ore microwave treatment and using method thereof |
| CN106152785B (en) * | 2016-09-26 | 2019-04-16 | 武汉科技大学 | A kind of heating furnace and its application method of ore microwave treatment |
| CN108256265A (en) * | 2017-11-02 | 2018-07-06 | 中冶华天南京电气工程技术有限公司 | H profile steel base Furnace Production Process mathematical model modeling method |
| CN108256265B (en) * | 2017-11-02 | 2021-07-23 | 中冶华天南京电气工程技术有限公司 | Mathematical model modeling method for heating process of H-shaped billet heating furnace |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140604 |
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| CX01 | Expiry of patent term |