CN108412798A - A kind of desulfurization single-stage high-speed centrifugal blower governing system and speed regulating method - Google Patents
A kind of desulfurization single-stage high-speed centrifugal blower governing system and speed regulating method Download PDFInfo
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- CN108412798A CN108412798A CN201810456900.5A CN201810456900A CN108412798A CN 108412798 A CN108412798 A CN 108412798A CN 201810456900 A CN201810456900 A CN 201810456900A CN 108412798 A CN108412798 A CN 108412798A
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 46
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 25
- 230000023556 desulfurization Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910052802 copper Inorganic materials 0.000 claims abstract description 76
- 239000010949 copper Substances 0.000 claims abstract description 76
- 239000004020 conductor Substances 0.000 claims abstract description 72
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 230000001360 synchronised effect Effects 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000003647 oxidation Effects 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 10
- 238000000703 high-speed centrifugation Methods 0.000 claims description 4
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 claims description 3
- 235000010261 calcium sulphite Nutrition 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 8
- 230000006872 improvement Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
Abstract
The invention discloses a kind of desulfurization single-stage high-speed centrifugal blower governing systems, including the permanent magnet coupling speed regulator being connected between permanent-magnet synchronous variable-frequency motor and single-stage high-speed centrifugal blower gearbox, permanent magnet coupling speed regulator include：The copper conductor rotor that is fixed on permanent-magnet synchronous variable-frequency motor output shaft, the PM rotor being fixed on single-stage high-speed centrifugal blower gearbox input shaft, for adjusting the regulating mechanism of air gap thickness or engagement area between copper conductor rotor and PM rotor, and the speed-regulating driver for driving regulating mechanism；Speed probe is set on single-stage high-speed centrifugal blower, speed-regulating driver input terminal is connect with speed probe and host computer, and speed-regulating driver output end is connect with regulating mechanism.The present invention also provides a kind of desulfurization speed regulating methods of single-stage high-speed centrifugal blower governing system.Beneficial effects of the present invention：It is not necessary that former desulphurization system is largely transformed, cost of investment is small, can realize preferable energy-saving effect, avoid energy waste in system operation.
Description
Technical field
The present invention relates to technical field of desulfurization, in particular to a kind of desulfurization single-stage high-speed centrifugal blower speed governing system
System and speed regulating method.
Background technology
Ensureing the operation of unit normally, stable simultaneously, needing to be optimized system structure, reduce the energy consumption of system,
Necessary measures to effectively increase energy savings and reduce material consumption are used in desulphurization system, to reduce the operating cost of desulphurization system, it will generate to a certain degree
On economic benefit and environmental effect.In entire desulphurization system, if desulfurizing agent is agstone, the power consumption of oxidation fan accounts for about
The 10% of desulphurization system；If desulfurizing agent is limestone block, the power consumption of oxidation fan accounts for about the 6~8% of desulphurization system, oxidation fan
Proportion of the power consumption in the power consumption of desulphurization system it is also relatively large, it is energy-saving to be of great significance.
Oxidation fan in desulphurization system is broadly divided into roots blower, Multi-stage centrifugal fan and single-stage high-speed centrifugal blower three
Kind form, the method for operation and control mode of wherein Multi-stage centrifugal fan and single-stage high-speed centrifugal blower are substantially the same, Roots
The operation of wind turbine and centrifugal blower differs.Centrifugal blower promotes the air quantity and pressure of fan outlet, wind using the rotating speed of impeller
Machine entrance, which is provided with, enters the wind baffle door, under present circumstances, by adjusting the aperture of inlet baffle door, so as to adjust air quantity and pressure
Head, but the aperture of baffle door influences whether that the crushing of wind turbine inlet and outlet, this part can become the energy loss of fan body.
Desulfurization is mostly stationary state operation with single-stage high-speed centrifugal blower, and scene will not be with unit load and scene
Actual conditions be adjusted correspondingly operation, which joins in unit compared with large load operation or desulphurization system inlet flue gas
Operating condition is suitable when number matches with design, easily occurs larger energy waste in actual motion.Although having at present to single-stage
The adjusting of high-speed centrifugal fan, but in the case where maintaining rotation speed of fan constant, throttling set (lock is installed in network system
Door, baffle, air door etc.), change its open degree, increases or reduces network resistance, it is this to carry out the adjusting of flow, wind pressure
Method adjustment equipment is simple, but uneconomical, does not meet power conservation requirement.In order to ensure that desulphurization system safety, economical operation, desulfurization are used
Single machine high-speed centrifugal fan is adjusted with the operating load of unit, the variation needs of Gas Parameters.
Existing single-stage high-speed centrifugal blower needs to increase frequency converter to realize 30% or so economize on electricity, still in transformation
The program needs to increase Transducer Room and its auxiliary facility, and reforming content is relatively more, invests also relatively large, the maintenance in later stage
Amount and maintenance cost are also larger.Meanwhile originally single-stage high-speed centrifugal blower is asynchronous motor, although its is stable, therefore
Barrier rate is low, but from the point of view of Energy Angle, and asynchronous motor can not embody energy-saving effect.
Invention content
To solve the above problems, the purpose of the present invention is to provide a kind of desulfurization single-stage high-speed centrifugal blower governing systems
And speed regulating method, the rotating speed of wind turbine can be adjusted with desulphurization system operating status, while can realize preferable energy-saving effect.
The present invention provides a kind of desulfurization single-stage high-speed centrifugal blower governing systems, including are connected to permanent-magnet synchronous frequency conversion
Permanent magnet coupling speed regulator between motor and single-stage high-speed centrifugal blower gearbox, the permanent magnet coupling speed regulator include：It is fixed
Copper conductor rotor on the permanent-magnet synchronous variable-frequency motor output shaft, to be fixed on the single-stage high-speed centrifugal blower gearbox defeated
Enter the PM rotor on axis, for adjusting air gap thickness or engagement between the copper conductor rotor and the PM rotor
The regulating mechanism of area, and the speed-regulating driver for driving the regulating mechanism；
Speed probe, the speed-regulating driver input terminal and the rotating speed are provided on the single-stage high-speed centrifugal blower
Sensor and host computer connection, it is dynamic that the speed-regulating driver output end connect the driving regulating mechanism with the regulating mechanism
Make；
Wherein, the single-stage high-speed centrifugal blower is strong by calcium sulfite for oxidation air to be delivered in desulfuration absorbing tower
Oxygenerating, the permanent-magnet synchronous variable-frequency motor are matched with the single-stage high-speed centrifugal blower.
As further improvement of the invention, the copper conductor rotor and the PM rotor are disc rotor.
As further improvement of the invention, the regulating mechanism is for adjusting the copper conductor rotor and the permanent magnet
Air gap thickness between rotor.
As further improvement of the invention, the copper conductor rotor and the PM rotor are cylindrical rotor.
As further improvement of the invention, the regulating mechanism is for adjusting the copper conductor rotor and the permanent magnet
Engagement area between rotor.
The present invention also provides a kind of desulfurization speed regulating methods of single-stage high-speed centrifugal blower governing system, including following step
Suddenly：
Step 1, host computer calculates the theory of single-stage high-speed centrifugal blower according to the flow of oxidation wind needed for desulphurization system
Rotating speed；
Step 2, the speed probe on the single-stage high-speed centrifugal blower obtains working as the single-stage high-speed centrifugal blower
Preceding rotating speed, the theoretical rotational speed in host computer combination step 1, obtains the required adjustment rotating speed of the single-stage high-speed centrifugal blower；
Step 3, which is converted by the speed-regulating driver according to the adjustment signal of the adjustment rotating speed received
The regulating mechanism is driven to act after current signal, the regulating mechanism adjusting is fixed on permanent-magnet synchronous variable-frequency motor output shaft
Copper conductor rotor and the PM rotor being fixed on the single-stage high-speed centrifugal blower input shaft between air gap thickness or
Engagement area changes the transmission torque between the copper conductor rotor and the PM rotor, high to change the single-stage
The output rotating speed of fast centrifugal blower.
It is further improved as of the invention, in step 3：When the adjustment rotating speed is to reduce rotating speed, the speed governing is driven
Dynamic device drives the regulating mechanism to increase the air gap thickness between the copper conductor rotor and the PM rotor, and the copper is led
Body rotor passes through the magnetic line of force quantity of the copper conductor rotor to reduce far from the PM rotor, and induced field becomes smaller, this
When, the transmission torque between the copper conductor rotor and the PM rotor becomes smaller, the single-stage high-speed centrifugal blower it is defeated
Go out rotating speed to become smaller；
When the adjustment rotating speed is to increase rotating speed, the speed-regulating driver drives the regulating mechanism to reduce the copper and leads
Air gap thickness between body rotor and the PM rotor, the copper conductor rotor is closer apart from the PM rotor, wears
The magnetic line of force quantity for crossing the copper conductor rotor increases, and induced field becomes larger, at this point, the copper conductor rotor and the permanent magnet
Transmission torque between rotor becomes larger, and the output rotating speed of the single-stage high-speed centrifugal blower becomes larger.
It is further improved as of the invention, in step 3：When the adjustment rotating speed is to reduce rotating speed, the speed governing is driven
Dynamic device drives the regulating mechanism to reduce the engagement area between the copper conductor rotor and the PM rotor, acts on institute
The magnetic line of force quantity for stating copper conductor rotor reduces, and induced field becomes smaller, at this point, the copper conductor rotor and the PM rotor
Between transmission torque become smaller, the output rotating speed of the single-stage high-speed centrifugal blower becomes smaller；
When the adjustment rotating speed is to increase rotating speed, the speed-regulating driver drives the regulating mechanism to increase the copper and leads
Engagement area between body rotor and the PM rotor, the magnetic line of force quantity for acting on the copper conductor rotor increase, sense
Magnetic field is answered to become larger, at this point, the transmission torque between the copper conductor rotor and the PM rotor becomes larger, the single-stage high-speed
The output rotating speed of centrifugal blower becomes larger.
Beneficial effects of the present invention are：
1, since variable speed is adjusted, flow is directly proportional to the first power of rotating speed, pressure and rotating speed it is square directly proportional, and manage
Net characteristic curve pressure and flow it is square directly proportional, so the power efficiency before and after rotational speed regulation varies less, rotating speed can be made
After adjusting single-stage high-speed centrifugal blower still high efficient district run, can realize 0~25% it is energy saving, it is even more；
2, the startup of single-stage high-speed centrifugal blower can gradually be run, and avoid the unexpected startup and stopping at scene, Neng Gougeng
Equipment is protected well, is increased equipment and its service life of parts, is reduced site examining and repairing maintenance and maintenance cost；
3, permanent magnet coupling speed regulator is that machine components reduce subsequent operation and maintenance cost without other accessories；
4, the operation conditions for the wind turbine that scene can be adjusted according to the practical operation situation of unit, reduces the waste of equipment,
Reduce the operating cost at scene；
5, pressure does not have supplementary loss to adjustable range greatly, after variable speed, and fan efficiency variation is little, energy saving, economical
Excellent performance；
6, gearshift adjustment can reduce the noise of wind turbine after reducing rotating speed, mitigate the abrasion of draught fan impeller, extend making for impeller
Use the service life.
Description of the drawings
Fig. 1 is a kind of schematic diagram of desulfurization single-stage high-speed centrifugal blower governing system described in the embodiment of the present invention.
In figure,
1, permanent-magnet synchronous variable-frequency motor；2, permanent magnet coupling speed regulator；3, single-stage high-speed centrifugal blower.
Specific implementation mode
It is described in further detail below by specific embodiment and in conjunction with attached drawing to the present invention.
Embodiment 1, as shown in Figure 1, a kind of desulfurization of embodiment of the present invention single-stage high-speed centrifugal blower governing system, packet
Include the permanent magnet coupling speed regulator 2 being connected between 3 gearbox of permanent-magnet synchronous variable-frequency motor 1 and single-stage high-speed centrifugal blower, permanent magnetism
Coupled speed regulator 2 includes：The copper conductor rotor that is fixed on 1 output shaft of permanent-magnet synchronous variable-frequency motor, be fixed on single-stage high-speed from
PM rotor on 3 gearbox input shaft of heart wind turbine, for adjusting air gap thickness between copper conductor rotor and PM rotor
Or the regulating mechanism of engagement area, and the speed-regulating driver for driving regulating mechanism；
Be provided with speed probe on single-stage high-speed centrifugal blower 3, speed-regulating driver input terminal and speed probe and on
Position machine connection, speed-regulating driver output end connect driving regulating mechanism action with regulating mechanism；
Single-stage high-speed centrifugal blower 3 is used to oxidation air being delivered in desulfuration absorbing tower and forces to aoxidize by calcium sulfite,
Permanent-magnet synchronous variable-frequency motor 1 is matched with single-stage high-speed centrifugal blower 3.
Matching used asynchronous machine is replaced with permanent-magnet synchronous variable-frequency motor by the present invention, is had the characteristics that：
(1) having the characteristics that high efficiency, high energy conservation economic operation characteristic range, wide (when being supported on 25~120%, efficiency can
Up to 95% or more), such as when load factor is 50%, the efficiency of asynchronous machine drops to 89%, and permanent-magnet synchronous frequency conversion still can be with
Keep 95% it is efficient.
(2) have the characteristics that high start torque, high embedded torque, exceed loading capability, high power density so that is same in permanent magnetism
When walking frequency conversion and frequency converter or being used cooperatively with permanent-magnet synchronous variable frequency soft starter, it can be substantially reduced according to practical shaft power
The installed capacity of device drives motor reduces the no-load loss of motor.
(3) has the characteristics that High Power Factor (power factor is up to 98% or more) so that no longer need to carry in power supply system
For idle, reactive power compensator is eliminated, equipment investment and fault point are reduced.Simultaneously because active and reactive electric current is big
Width declines (than declining 30% with capacity asynchronous motor) so that all service cable sections, supply transformer, are opened mother's board in cabinet
The capacity such as pass can all reduce, and while reducing equipment investment, reduce the loss of transformer and transmission line of electricity.
(4) have the characteristics that high reliability, high interchangeability, i.e., have identical seat No. with the asynchronous machine of same capacity and go out
Line mode so that it is very simple and convenient that asynchronous machine is replaced in permanent-magnet synchronous frequency conversion.
The flow of single-stage high-speed centrifugal blower is directly proportional to rotation speed of fan, square directly proportional, the wind of wind pressure and rotation speed of fan
Shaft power and rotation speed of fan it is cube directly proportional, selection best operating point may be implemented by changing rotating speed.It is high to change single-stage
The target of selection best operating point may be implemented in fast centrifugal blower rotating speed, actual air volume, that is, uninterrupted is rationally controlled, according to list
The rotating speed of the grade high-speed centrifugal fan rotating speed relationship directly proportional to power, single-stage high-speed centrifugal blower reduces, single-stage high-speed centrifugation
Wind turbine needs the electrical power consumed also to decline, to realize the energy-saving of single-stage high-speed centrifugal blower.Change single-stage high-speed from
The rotating speed of heart wind turbine can not only change fan performance, but also energy-saving effect is apparent, meanwhile, single-stage high-speed centrifugal blower turns
When speed changes, efficiency remains unchanged.
Desk permanent-magnet coupled speed regulator and tubular permanent magnet coupling speed regulator can be used in the permanent magnet coupling speed regulator 2 of the present invention.
When using desk permanent-magnet coupled speed regulator, copper conductor rotor and PM rotor are disc rotor, at this point, adjusting
Section mechanism is used to adjust the air gap thickness between copper conductor rotor and PM rotor, and copper is adjusted by the variation of air gap thickness
Transmission torque between conductor rotor and PM rotor, to complete the adjusting of 3 rotating speed of single-stage high-speed centrifugal blower.
When using tubular permanent magnet coupling speed regulator, copper conductor rotor and PM rotor are cylindrical rotor, at this point, adjusting
Mechanism is used to adjust the engagement area between copper conductor rotor and PM rotor, is led by the variation of engagement area to adjust copper
Transmission torque between body rotor and PM rotor, to complete the adjusting of 3 rotating speed of single-stage high-speed centrifugal blower.
After desulfurization using the present invention single-stage high-speed centrifugal blower speed regulation device, desulphurization system and the energy saving drop of oxidation fan
It is as follows to consume situation table：
From the results, it was seen that using this governing system, wind turbine can realize 0~25% it is energy saving, it is even more, turn
Power efficiency before and after velocity modulation section varies less, and rotational speed regulation rear venting machine can be made still to be run in high efficient district.The startup energy of wind turbine
It is enough gradually to run, the unexpected startup and stopping at scene are avoided, can preferably protect equipment, increase equipment and its parts make
With the service life, site examining and repairing maintenance and maintenance cost are reduced.The wind turbine that scene can be adjusted according to the practical operation situation of unit
Operation conditions, reduce the waste of equipment, reduce scene operating cost.Pressure is not additional greatly, after variable speed for adjustable range
Loss, and fan efficiency variation is little, it is energy saving, economic performance is good.The noise that wind turbine can be reduced after reduction rotating speed, mitigates wind turbine
The abrasion of impeller extends the service life of impeller.Meanwhile magnetic coupling governor is machine components, standby redundancy is almost without subtracting
Few subsequent operation and maintenance cost.
A kind of embodiment 2, desulfurization speed regulating method of single-stage high-speed centrifugal blower governing system, includes the following steps：
Step 1, host computer calculates the reason of single-stage high-speed centrifugal blower 3 according to the flow of oxidation wind needed for desulphurization system
By rotating speed；
Step 2, the speed probe on single-stage high-speed centrifugal blower 3 obtains the current rotating speed of single-stage high-speed centrifugal blower 3,
Theoretical rotational speed in host computer combination step 1 obtains 3 required adjustment rotating speed of single-stage high-speed centrifugal blower；
Step 3, which is converted into electric current by speed-regulating driver according to the adjustment signal of the adjustment rotating speed received
Regulating mechanism action, regulating mechanism is driven to adjust the copper conductor being fixed on 1 output shaft of permanent-magnet synchronous variable-frequency motor and turn after signal
Air gap thickness or engagement area between son and the PM rotor being fixed on 3 input shaft of single-stage high-speed centrifugal blower change
Transmission torque between copper conductor rotor and PM rotor, to change the output rotating speed of single-stage high-speed centrifugal blower.
Desk permanent-magnet coupled speed regulator and tubular permanent magnet coupling speed regulator can be used in the permanent magnet coupling speed regulator 2 of the present invention.
When using desk permanent-magnet coupled speed regulator, copper conductor rotor and PM rotor are disc rotor, at this point,
Regulating mechanism is used to adjust the air gap thickness between copper conductor rotor and PM rotor, is adjusted by the variation of air gap thickness
Transmission torque between copper conductor rotor and PM rotor, to complete the adjusting of 3 rotating speed of single-stage high-speed centrifugal blower.Step
Specific regulative mode is in 3：
When it is to reduce rotating speed to adjust rotating speed, speed-regulating driver drives regulating mechanism to increase copper conductor rotor and permanent magnet turn
Air gap thickness between son, copper conductor rotor pass through the magnetic line of force quantity of copper conductor rotor to reduce, induction far from PM rotor
Magnetic field becomes smaller, at this point, the transmission torque between copper conductor rotor and PM rotor becomes smaller, the output of single-stage high-speed centrifugal blower
Rotating speed becomes smaller；
When it is to increase rotating speed to adjust rotating speed, speed-regulating driver drives regulating mechanism to reduce copper conductor rotor and permanent magnet turn
Air gap thickness between son, copper conductor rotor is closer apart from PM rotor, and the magnetic line of force quantity of copper conductor rotor is passed through to increase,
Induced field becomes larger, at this point, the transmission torque between copper conductor rotor and PM rotor becomes larger, single-stage high-speed centrifugal blower
Output rotating speed becomes larger.
When using tubular permanent magnet coupling speed regulator, copper conductor rotor and PM rotor are cylindrical rotor, at this point, adjusting
Section mechanism is used to adjust the engagement area between copper conductor rotor and PM rotor, and copper is adjusted by the variation of engagement area
Transmission torque between conductor rotor and PM rotor, to complete the adjusting of 3 rotating speed of single-stage high-speed centrifugal blower.Step 3
In specific regulative mode be：
When it is to reduce rotating speed to adjust rotating speed, speed-regulating driver drives regulating mechanism to reduce copper conductor rotor and permanent magnet turn
Engagement area between son, the magnetic line of force quantity for acting on copper conductor rotor reduce, and induced field becomes smaller, at this point, copper conductor turns
Transmission torque between son and PM rotor becomes smaller, and the output rotating speed of single-stage high-speed centrifugal blower becomes smaller；
When it is to increase rotating speed to adjust rotating speed, speed-regulating driver drives regulating mechanism to increase copper conductor rotor and permanent magnet turn
Engagement area between son, the magnetic line of force quantity for acting on copper conductor rotor increase, and induced field becomes larger, at this point, copper conductor turns
Transmission torque between son and PM rotor becomes larger, and the output rotating speed of single-stage high-speed centrifugal blower becomes larger.
The single-stage high-speed centrifugal blower collocation permanent-magnet synchronous variable-frequency motor of inventive desulfurization, increased auxiliary facility is few,
It is not necessary that original desulphurization system is largely transformed, cost of investment is small, and uses permanent magnet coupling speed regulator speed governing, can realize wind
The larger energy-saving effect of machine avoids the running energy waste of desulphurization system.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of desulfurization single-stage high-speed centrifugal blower governing system, which is characterized in that including being connected to permanent-magnet synchronous variable-frequency electric
Permanent magnet coupling speed regulator (2) between machine (1) and single-stage high-speed centrifugal blower (3) gearbox, the permanent magnet coupling speed regulator (2)
Including：The copper conductor rotor that is fixed on the permanent-magnet synchronous variable-frequency motor output shaft is fixed on the single-stage high-speed centrifugation wind
PM rotor on machine (3) gearbox input shaft, for adjusting gas between the copper conductor rotor and the PM rotor
The regulating mechanism of gap thickness or engagement area, and the speed-regulating driver for driving the regulating mechanism；
Speed probe, the speed-regulating driver input terminal and the rotating speed are provided on the single-stage high-speed centrifugal blower (3)
Sensor and host computer connection, it is dynamic that the speed-regulating driver output end connect the driving regulating mechanism with the regulating mechanism
Make；
Wherein, the single-stage high-speed centrifugal blower (3) is strong by calcium sulfite for oxidation air to be delivered in desulfuration absorbing tower
Oxygenerating, the permanent-magnet synchronous variable-frequency motor (1) match with the single-stage high-speed centrifugal blower (3).
2. desulfurization according to claim 1 single-stage high-speed centrifugal blower governing system, which is characterized in that the copper conductor
Rotor and the PM rotor are disc rotor.
3. desulfurization according to claim 2 single-stage high-speed centrifugal blower governing system, which is characterized in that the adjusting machine
Structure is used to adjust the air gap thickness between the copper conductor rotor and the PM rotor.
4. desulfurization according to claim 1 single-stage high-speed centrifugal blower governing system, which is characterized in that the copper conductor
Rotor and the PM rotor are cylindrical rotor.
5. desulfurization according to claim 4 single-stage high-speed centrifugal blower governing system, which is characterized in that the adjusting machine
Structure is used to adjust the engagement area between the copper conductor rotor and the PM rotor.
6. a kind of desulfurization speed regulating method of single-stage high-speed centrifugal blower governing system, which is characterized in that include the following steps：
Step 1, host computer calculates the theory of single-stage high-speed centrifugal blower (3) according to the flow of oxidation wind needed for desulphurization system
Rotating speed；
Step 2, the speed probe on the single-stage high-speed centrifugal blower (3) obtains the single-stage high-speed centrifugal blower (3)
Current rotating speed, the theoretical rotational speed in host computer combination step 1, obtains the required adjustment of the single-stage high-speed centrifugal blower (3)
Rotating speed；
Step 3, which is converted into electric current by the speed-regulating driver according to the adjustment signal of the adjustment rotating speed received
The regulating mechanism is driven to act after signal, the regulating mechanism adjusting is fixed on permanent-magnet synchronous variable-frequency motor (1) output shaft
Copper conductor rotor and the PM rotor being fixed on single-stage high-speed centrifugal blower (3) input shaft between air gap thickness
Or engagement area, change the transmission torque between the copper conductor rotor and the PM rotor, to change the single-stage
The output rotating speed of high-speed centrifugal fan.
7. speed regulating method according to claim 6, which is characterized in that in step 3：
When the adjustment rotating speed is to reduce rotating speed, the speed-regulating driver drives the regulating mechanism to increase the copper conductor turn
Air gap thickness between the sub and described PM rotor, the copper conductor rotor pass through the copper far from the PM rotor
The magnetic line of force quantity of conductor rotor reduces, and induced field becomes smaller, at this point, between the copper conductor rotor and the PM rotor
Transmission torque become smaller, the output rotating speed of the single-stage high-speed centrifugal blower becomes smaller；
When the adjustment rotating speed is to increase rotating speed, the speed-regulating driver drives the regulating mechanism to reduce the copper conductor turn
Air gap thickness between the sub and described PM rotor, the copper conductor rotor is closer apart from the PM rotor, passes through institute
The magnetic line of force quantity for stating copper conductor rotor increases, and induced field becomes larger, at this point, the copper conductor rotor and the PM rotor
Between transmission torque become larger, the output rotating speed of the single-stage high-speed centrifugal blower becomes larger.
8. speed regulating method according to claim 6, which is characterized in that in step 3：
When the adjustment rotating speed is to reduce rotating speed, the speed-regulating driver drives the regulating mechanism to reduce the copper conductor turn
Engagement area between the sub and described PM rotor, the magnetic line of force quantity for acting on the copper conductor rotor reduce, and incude magnetic
Field becomes smaller, at this point, the transmission torque between the copper conductor rotor and the PM rotor becomes smaller, the single-stage high-speed centrifugation
The output rotating speed of wind turbine becomes smaller；
When the adjustment rotating speed is to increase rotating speed, the speed-regulating driver drives the regulating mechanism to increase the copper conductor turn
Engagement area between the sub and described PM rotor, the magnetic line of force quantity for acting on the copper conductor rotor increase, and incude magnetic
Field becomes larger, at this point, the transmission torque between the copper conductor rotor and the PM rotor becomes larger, the single-stage high-speed centrifugation
The output rotating speed of wind turbine becomes larger.
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