CN202692686U - Sintering machine flue gas desulfurization constant negative pressure lead-out control device - Google Patents
Sintering machine flue gas desulfurization constant negative pressure lead-out control device Download PDFInfo
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- CN202692686U CN202692686U CN 201220320899 CN201220320899U CN202692686U CN 202692686 U CN202692686 U CN 202692686U CN 201220320899 CN201220320899 CN 201220320899 CN 201220320899 U CN201220320899 U CN 201220320899U CN 202692686 U CN202692686 U CN 202692686U
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- China
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- flue gas
- negative pressure
- control device
- desulfurization
- flue
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Abstract
The utility model discloses a sintering machine flue gas desulfurization constant negative pressure lead-out control device, belongs to a lead-out control device of an industrial device flue gas and air system, and particularly relates to a negative pressure air-inducing device with the requirements on air-inducing quantity and state pressure. In the sintering machine flue gas desulfurization constant negative pressure lead-out control device, a flue gas inlet of a sintering fan is arranged at one end of the flue gas pipeline; and a flue gas outlet of a desulfurization fan is arranged at the other end of the flue gas pipeline. The sintering machine flue gas desulfurization constant negative pressure lead-out control device is characterized in that a pressure sensor A, a pressure sensor B and a pressure sensor C are arranged at the front section, the middle section and the rear section of the flue gas pipeline respectively; the output ends of the three pressure sensors are connected to the input end of a programmable logic controller (PLC) control system; and the output end of a control signal of the PLC control system is connected with air quantity adjusting equipment of the flue gas pipeline. The sintering machine flue gas desulfurization constant negative pressure lead-out control device acquires the average value of the flue gas pipeline pressure, compares the average value of the flue gas pipeline pressure with the set value, realizes on-line adjustment on the air-inducing quantity of the desulfurization fan by a digital proportion integration differentiation (PID) on-line control technology and adopts the matched mode that the air-inducing quantity of the desulfurization fan is slightly greater than the exhaust air quantity of the sintering fan so as to realize constant negative pressure lead-out of sintering flue gas.
Description
Technical field
The utility model belongs to the control device of drawing of commercial plant air and gas system, and the negative pressure induced wind device of air inducing amount and state pressure requirement is particularly arranged.
Background technology
In industrial processes, the operating load of process unit constantly changes, adjusts according to Production requirement, raw-material difference, and the exhaust air rate of process unit constantly changes thereupon, adjusts.The adjustment of most commercial plant air inducing amount is to carry out manual operation by the operator according to master-control room notice or instruction, through long-range or Field adjustment air-introduced machine fluid coupling aperture, frequency converter operation hertz number or the realization of the entrance door aperture control to the air inducing amount.
There is following problem in above-mentioned air output control method:
(1) hysteresis quality is obvious, needs command end to propose to adjust requirement
Advise By Wire
Actuating station is carried out instruction
The air inducing amount is adjusted
The wait operating mode is stable
Command end confirms to adjust result's process, generally lags behind 15～30min even longer time.
(2) adjusting deviation is large, the manual operation risk that exists the factors such as instruction errors, execution error, manual errors, carelessness to cause.
(3) operation stability, less economical, because hysteresis quality, the deviation of manual adjustment air inducing amount cause the matching of exhaust air rate and air inducing amount poor, cause the commercial plant air draft between smooth and easy and not smooth, repeatedly to change, not only affect the stability of flue gas system but also increased the id-motor operation energy consumption.
The utility model content
There are hysteresis quality, deficiency that deviation is large in order to overcome existing control device, the utility model provides the permanent negative pressure of a kind of flue gas of sintering machine to draw control device, the permanent negative pressure of this flue gas of sintering machine is drawn control device and is utilized digital PID On-line Control technology to realize the online adjustment of desulfurization blower fan air inducing amount, take desulfurization blower fan air inducing amount to be slightly larger than matching way with sintering blower fan exhaust air rate, thereby the permanent negative pressure that realizes sinter fume is drawn.
The technical scheme that its technical problem that solves the utility model adopts is: the permanent negative pressure of a kind of flue gas of sintering machine is drawn control device, flue one end is the smoke inlet that the sintering blower fan is housed, the other end is the exhanst gas outlet that the desulfurization blower fan is housed, it is characterized in that: section is equipped with respectively pressure sensor A, B, C before, during and after flue, the output of Three pressures sensor is connected to the input of PLC control system, and the control signal output of PLC control system is connecting flue air quantity conditioning equipment.
Described flue air quantity conditioning equipment is the YE that is installed in the entrance door on the flue.
Described flue air quantity conditioning equipment is the frequency converter of control desulfurization rotation speed of fan.
Described flue air quantity conditioning equipment is the frequency converter and the YE that is installed in the entrance door on the flue of control desulfurization rotation speed of fan.
The control method of this control device is served as reasons and is installed in respectively after the flue gas pressures that pressure sensor A, pressure sensor B, the pressure sensor C of section before, during and after the flue gather flue is delivered to the PLC control system, get three's mean value and original setting value compares, utilize digital PID On-line Control technology to realize the online adjustment of desulfurization blower fan air inducing amount, take desulfurization blower fan air inducing amount to be slightly larger than matching way with sintering blower fan exhaust air rate, thereby the permanent negative pressure that realizes sinter fume is drawn.The concrete regulative mode of desulfurization blower fan air inducing amount is the YE that 1. adjustings are installed in the entrance door on the flue.2. by regulating Frequency Converter Control desulfurization rotation speed of fan, 3. by regulating simultaneously Frequency Converter Control desulfurization rotation speed of fan and regulating the YE that is installed in the entrance door on the flue.
The beneficial effects of the utility model are by gathering the flue pressure mean values and comparing in setting value, utilize digital PID On-line Control technology to realize the online adjustment of desulfurization blower fan air inducing amount, take desulfurization blower fan air inducing amount to be slightly larger than matching way with sintering blower fan exhaust air rate, thereby the permanent negative pressure that realizes sinter fume is drawn.
Description of drawings
Fig. 1 is structural representation of the present utility model,
Among the figure, 1. smoke inlet, 2. sintering blower fan, 3. pressure sensor A, 4. pressure sensor B, 5. pressure sensor C, 6.PLC control system, 7. flue gas air channel, 8. conditioning equipment, 9. entrance door, 10. desulfurization blower fan, 11. exhanst gas outlets.
The specific embodiment
The specific embodiment of the present utility model is, as shown in the figure:
Embodiment 1, the permanent negative pressure of a kind of flue gas of sintering machine is drawn control device, flue 7 one ends are the smoke inlet 1 that sintering blower fan 2 is housed, the other end is the exhanst gas outlet 11 that desulfurization blower fan 10 is housed, it is characterized in that: section is equipped with respectively pressure sensor A3, pressure sensor B4, pressure sensor C5 before, during and after flue, the output of Three pressures sensor is connected to the input of PLC control system 6, and the control signal output of PLC control system is connecting flue air quantity conditioning equipment 8.
Described flue air quantity conditioning equipment is the YE that is installed in the entrance door 9 on the flue.
Embodiment 2, the permanent negative pressure of a kind of flue gas of sintering machine is drawn control device, flue 7 one ends are the smoke inlet 1 that sintering blower fan 2 is housed, the other end is the exhanst gas outlet 11 that desulfurization blower fan 10 is housed, it is characterized in that: section is equipped with respectively pressure sensor A3, pressure sensor B4, pressure sensor C5 before, during and after flue, the output of Three pressures sensor is connected to the input of PLC control system 6, and the control signal output of PLC control system is connecting flue air quantity conditioning equipment 8.
Described flue air quantity conditioning equipment is the frequency converter of control desulfurization blower fan 10 rotating speeds.
Embodiment 3, the permanent negative pressure of a kind of flue gas of sintering machine is drawn control device, flue 7 one ends are the smoke inlet 1 that sintering blower fan 2 is housed, the other end is the exhanst gas outlet 11 that desulfurization blower fan 10 is housed, it is characterized in that: section is equipped with respectively pressure sensor A3, pressure sensor B4, pressure sensor C5 before, during and after flue, the output of Three pressures sensor is connected to the input of PLC control system 6, and the control signal output of PLC control system is connecting flue air quantity conditioning equipment 8.
Described flue air quantity conditioning equipment is the frequency converter and the YE that is installed in the entrance door 9 on the flue of control desulfurization blower fan 10 rotating speeds.
Claims (4)
1. the permanent negative pressure of flue gas of sintering machine is drawn control device, flue one end is the smoke inlet that the sintering blower fan is housed, the other end is the exhanst gas outlet that the desulfurization blower fan is housed, it is characterized in that: section is equipped with respectively pressure sensor A, B, C before, during and after flue, the output of Three pressures sensor is connected to the input of PLC control system, and the control signal output of PLC control system is connecting flue air quantity conditioning equipment.
2. the permanent negative pressure of flue gas of sintering machine according to claim 1 is drawn control device, and it is characterized in that: described flue air quantity conditioning equipment is the YE that is installed in the entrance door on the flue.
3. the permanent negative pressure of flue gas of sintering machine according to claim 1 is drawn control device, it is characterized in that: described flue air quantity conditioning equipment is the frequency converter of control desulfurization rotation speed of fan.
4. the permanent negative pressure of flue gas of sintering machine according to claim 1 is drawn control device, it is characterized in that: described flue air quantity conditioning equipment is the frequency converter and the YE that is installed in the entrance door on the flue of control desulfurization rotation speed of fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320899 CN202692686U (en) | 2012-07-03 | 2012-07-03 | Sintering machine flue gas desulfurization constant negative pressure lead-out control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220320899 CN202692686U (en) | 2012-07-03 | 2012-07-03 | Sintering machine flue gas desulfurization constant negative pressure lead-out control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692686U true CN202692686U (en) | 2013-01-23 |
Family
ID=47548294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220320899 Expired - Lifetime CN202692686U (en) | 2012-07-03 | 2012-07-03 | Sintering machine flue gas desulfurization constant negative pressure lead-out control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202692686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827012A (en) * | 2018-08-14 | 2018-11-16 | 沈阳创联工业技术有限公司 | Oil plant flue gas of heating furnace desulfurization air-introduced machine PLC frequency-converting speed-governing control system |
-
2012
- 2012-07-03 CN CN 201220320899 patent/CN202692686U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827012A (en) * | 2018-08-14 | 2018-11-16 | 沈阳创联工业技术有限公司 | Oil plant flue gas of heating furnace desulfurization air-introduced machine PLC frequency-converting speed-governing control system |
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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: 20130123 |