CN108457890A - The converting operation device and converting operation method of desulfurization single-stage high-speed centrifugal blower - Google Patents
The converting operation device and converting operation method of desulfurization single-stage high-speed centrifugal blower Download PDFInfo
- Publication number
- CN108457890A CN108457890A CN201810456898.1A CN201810456898A CN108457890A CN 108457890 A CN108457890 A CN 108457890A CN 201810456898 A CN201810456898 A CN 201810456898A CN 108457890 A CN108457890 A CN 108457890A
- Authority
- CN
- China
- Prior art keywords
- centrifugal blower
- stage high
- speed
- speed centrifugal
- synchronous motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 21
- 230000023556 desulfurization Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims abstract description 48
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 claims abstract description 4
- 235000010261 calcium sulphite Nutrition 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000000523 sample Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 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
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000004804 winding 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Multiple Motors (AREA)
Abstract
The invention discloses a kind of converting operation devices of desulfurization single-stage high-speed centrifugal blower, including：Permanent magnet synchronous motor, the single-stage high-speed centrifugal blower being connected on the permanent magnet synchronous motor and the frequency converter for permanent magnet synchronous motor described in drive control, the inverter input is connected with power frequency supply, and the inverter output terminal is connected with the permanent magnet synchronous motor output shaft；Wherein, the single-stage high-speed centrifugal blower is used to oxidation air being delivered in desulfuration absorbing tower and forces to aoxidize by calcium sulfite, and the permanent magnet synchronous motor is matched with the single-stage high-speed centrifugal blower.The present invention also provides a kind of converting operation methods of the converting operation device of desulfurization single-stage high-speed centrifugal blower.Beneficial effects of the present invention：The operating condition that single-stage high-speed centrifugal blower can be adjusted according to the practical operation situation of unit, reduces the waste of equipment, the operating cost at the scene of reducing.
Description
Technical field
The present invention relates to technical field of desulfurization, in particular to a kind of desulfurization frequency conversion of single-stage high-speed centrifugal blower
Running gear and converting operation 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 be broadly divided into single-stage high-speed centrifugal blower, Multi-stage centrifugal fan and single-stage high-speed from
Three kinds of forms of heart wind turbine, the wherein method of operation and control mode of Multi-stage centrifugal fan and single-stage high-speed centrifugal blower substantially phase
Together, the operation of single-stage high-speed centrifugal blower and centrifugal blower differs.Centrifugal blower promotes fan outlet using the rotating speed of impeller
Air quantity and pressure, fans entrance is provided with air inlet baffle door, under present circumstances, by adjusting the aperture of inlet baffle door, from
And air quantity and pressure head are adjusted, but the aperture of baffle door influences whether the crushing of wind turbine inlet and outlet, this part can become wind turbine sheet
The energy loss of 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.Wind turbine is in actual operation
Flow total flow is that boiler load is followed to change.Therefore, it is necessary to carry out adjusting appropriate to the work of wind turbine.So-called tune
Section, exactly manually changes the position of blower fan work point, makes the output flow and actual needs amount phase equilibrium of wind turbine.Existing adjusting
There are two ways to type：First, changing pipe resistance characteristic curve to change blower fan work point；Second is that it is bent to change fan characteristic
Line changes blower fan work point.Although there is the adjusting to single-stage high-speed centrifugal blower at present, maintaining rotation speed of fan constant
In the case of, throttling set (gate, baffle, air door etc.) is installed in network system, changes its open degree, increases or reduces net
Network resistance, to carry out the adjusting of flow, wind pressure, this method adjustment equipment is simple but uneconomical, does not meet power conservation requirement.
Meanwhile originally single-stage high-speed centrifugal blower is asynchronous motor, although its is stable, failure rate is low, from Energy Angle
From the point of view of, asynchronous motor can not embody energy-saving effect.In order to ensure desulphurization system safety, economical operation, desulfurization single machine high speed
Centrifugal blower is adjusted with the operating load of unit, the variation needs of Gas Parameters.
Invention content
To solve the above problems, the purpose of the present invention is to provide a kind of frequency conversion of desulfurization single-stage high-speed centrifugal blower fortune
Luggage is set and converting operation method, and the operating condition of single-stage high-speed centrifugal blower can be adjusted according to the practical operation situation of unit,
The waste for reducing equipment, the operating cost at the scene of reducing.
The present invention provides a kind of converting operation devices of desulfurization single-stage high-speed centrifugal blower, including：Permanent magnet synchronous electric
Machine, the single-stage high-speed centrifugal blower being connected on the permanent magnet synchronous motor and for permanent magnet synchronous electric described in drive control
The frequency converter of machine, the inverter input are connected with power frequency supply, the inverter output terminal and the permanent magnet synchronous motor
Output shaft is connected；
The frequency converter is located in frequency conversion tank, including rectifier, filter, inverter and controller, and the rectifier is defeated
Enter end with power frequency supply to be connected, the rectifier output end is connected with the filter input end, the filter output with
The inverter input terminal is connected, and the inverter output end is connected with the permanent magnet synchronous motor output shaft, the rectifier,
The filter and the inverter are connected with the controller；
Speed probe, the speed probe and the controller phase are provided on the single-stage high-speed centrifugal blower
Even；
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 motor are matched with the single-stage high-speed centrifugal blower.
As further improvement of the invention, the single-stage high-speed centrifugal blower passes through shaft coupling with the permanent magnet synchronous motor
Device is connected.
As further improvement of the invention, the controller includes：
Detection circuit：Detect the filter filtering it is smooth after voltage, current signal；
Computing circuit：The speed signal of the speed probe is compared with electric current, the voltage signal of detection circuit
Operation determines output voltage, the frequency of the inverter；
Driving circuit：The on, off of the switching device of the inverter is driven according to determining output voltage, frequency；
Protect circuit：According to the output voltage of the inverter inverter is protected when overload or overvoltage occurs
With the permanent magnet synchronous motor.
The present invention also provides a kind of converting operation method of the converting operation device of desulfurization single-stage high-speed centrifugal blower,
Include the following steps：
Step 1, start permanent magnet synchronous motor, frequency converter and single-stage high-speed centrifugal blower；
Step 2, host computer calculates the single-stage high-speed centrifugal blower according to the flow of oxidation wind needed for desulphurization system
Theoretical rotational speed；
Step 3, 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 4, the controller of the frequency converter turns the adjustment signal according to the adjustment signal of the adjustment rotating speed received
After changing control signal into, the inverter for controlling the frequency converter adjusts the voltage of output, frequency, drives the permanent magnet synchronous motor
It works according to this voltage and frequency, and then changes the output rotating speed of the single-stage high-speed centrifugal blower.
It is improved as of the invention further, in step 1, when starting frequency converter, the rectifier of the frequency converter is by power frequency
Alternating current is converted to direct current, and transformed direct current is filtered smoothly by the filter of the frequency converter；
In step 4, according to the control signal of the controller, the inverter by the DC conversion after filtering at
Voltage, frequency meet the alternating current of adjustment rotating speed, drive the permanent magnet synchronous motor.
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
Rear venting machine is adjusted still to run in high efficient district, 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, the operation conditions for the single-stage high-speed centrifugal blower that scene can be adjusted according to the practical operation situation of unit, is reduced
The waste of equipment, the operating cost at the scene of reducing.
4, pressure does not have supplementary loss to adjustable range greatly, after variable speed, and single-stage high-speed centrifugal blower efficiency change is not
Greatly, energy saving, economic performance is good；
5, gearshift adjustment can reduce the noise of single-stage high-speed centrifugal blower after reducing rotating speed, mitigate single-stage high-speed and centrifuge wind
The abrasion of machine impeller extends the service life of impeller.
Description of the drawings
Fig. 1 is a kind of signal of the converting operation device of desulfurization single-stage high-speed centrifugal blower described in the embodiment of the present invention
Figure.
In figure,
1, permanent magnet synchronous motor；2, frequency converter；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 converting operation of desulfurization single-stage high-speed centrifugal blower of the embodiment of the present invention
Device, including：Permanent magnet synchronous motor 1, the single-stage high-speed centrifugal blower 3 being connected on permanent magnet synchronous motor 1 and for driving
The frequency converter 2 of permanent magnet synchronous motor 1 is controlled, 2 input terminal of frequency converter is connected with power frequency supply, and 2 output end of frequency converter and permanent magnetism are same
1 output shaft of motor is walked to be connected；
Frequency converter 2 is located in frequency conversion tank, including rectifier, filter, inverter and controller, rectifier input and work
Frequency power is connected, and rectifier output end is connected with filter input end, and filter output is connected with inverter input terminal, inversion
Device output end is connected with 1 output shaft of permanent magnet synchronous motor, and rectifier, filter and inverter are connected with controller；
Speed probe is provided on single-stage high-speed centrifugal blower 3, speed probe is connected with controller；
Wherein, single-stage high-speed centrifugal blower 3 forces calcium sulfite for oxidation air to be delivered in desulfuration absorbing tower
Oxidation, permanent magnet synchronous motor 1 are matched with single-stage high-speed centrifugal blower 3.
Industrial-frequency alternating current is converted to direct current by rectifier, and transformed direct current is filtered smoothly by filter, inverse
Become device by the DC conversion after filtering into different frequency, the square wave of width, amplitude, controller transmits a signal to rectification
Device, filter and inverter, while the signal from these parts is received, and frequency, amplitude and the pulsewidth of output square wave are controlled,
So that it is superposed to the alternating current of approximate sine wave, drives permanent magnet synchronous motor 1.
Single-stage high-speed centrifugal blower 3 is connected with permanent magnet synchronous motor 1 by shaft coupling.
Wherein, controller includes：
Detection circuit：Voltage, current signal after Fault detection filter filtering；
Computing circuit：The speed signal of speed probe is compared operation with electric current, the voltage signal of detection circuit,
Determine output voltage, the frequency of inverter；
Driving circuit：The on, off of the switching device of inverter is driven according to determining output voltage, frequency；
Protect circuit：According to the output voltage of inverter, when overload or overvoltage occurs, protect inverter and permanent magnetism same
Walk motor 1.
Matching used asynchronous machine is replaced with permanent magnet synchronous motor, the structure letter of permasyn morot by the present invention
Single, small, reliable operation, failure rate is low, is natural fire-proof motor, the stationary part base with three phase asynchronism induction-motor
This is consistent, and the main distinction is in rotor portion, and rotor uses solid construction, sets copper rod and starts cage modle, preset magnet material
Material provides a large amount of magnetic field of loss needed for motor power conversion by permanent magnet, is carried instead of traditional rotor windings induction magnetic energy
For excitation, electrical excitation collector ring brush and field power supply are eliminated.It has 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 Q of single-stage high-speed centrifugal blower is directly proportional to rotation speed of fan n, wind pressure P and rotation speed of fan n square at just
It is cube more directly proportional than, fan shaft power N and rotation speed of fan n, selection best operating point may be implemented by changing rotating speed.Change
The target of selection best operating point may be implemented in single-stage high-speed centrifugal blower rotating speed, rationally controls actual air volume, that is, uninterrupted,
According to the single-stage high-speed centrifugal blower rotating speed relationship directly proportional to power, the rotating speed of single-stage high-speed centrifugal blower reduces, and single-stage is high
Fast centrifugal blower needs the electrical power consumed also to decline, to realize the energy-saving of single-stage high-speed centrifugal blower.Change single-stage
The rotating speed of high-speed centrifugal fan can not only change fan performance, but also energy-saving effect is apparent, meanwhile, single-stage high-speed centrifuges wind
When the rotating speed of machine changes, efficiency remains unchanged.
After the converting operation device of desulfurization using the present invention single-stage high-speed centrifugal blower, desulphurization system and oxidation fan
Energy-saving situation table is as follows：
From the results, it was seen that using this speed regulation device, single-stage high-speed centrifugal blower can realize 0~25% section
Can, even more, the startup of single-stage high-speed centrifugal blower can gradually be run, and avoid the unexpected startup and stopping at scene, can
Equipment is preferably protected, increases equipment and its service life of parts, reduces site examining and repairing maintenance and maintenance cost.
The advantages of converting operation device of the present invention：
(1) speed efficiency is high, belongs to efficient mode of speed regulation.This is because after frequency variation, permanent magnet synchronous motor still exists
Synchronous rotational speed is nearby run, and keeps specified slip substantially, and unsteady flow is only will produce in frequency conversion device system and is lost, and due to
The loss of the influence of higher hamonic wave, permanent magnet synchronous motor increases, to which efficiency is declined.
(2) speed-regulating range width is general up to 20：1, there is high speed efficiency, frequency control in entire speed adjustable range
Suitable for speed-regulating range width, and often in the occasion run under low load condition.
(3) mechanical property is harder, and when without automatically controlling, relative speed variation is below 5%；When using automatically controlling,
High-precision can be done to run, speed fluctuation rate is controlled 0.5~1% or so.
(4) converting operation device, can be out of service just in case break down, and changes and is directly powered by power grid, single-stage high-speed from
Heart wind turbine may continue to keep operating.
(5) starting device can be doubled as, i.e., permanent magnet synchronous motor is started to by a certain rotating speed by frequency converter, then disconnect frequency conversion
Device, permanent magnet synchronous motor, which can be directly connected to power frequency supply, makes single-stage high-speed centrifugal blower accelerate at full speed.In frequency converter to power frequency
When power supply switches, generally there is 400~500% dash current to generate, network voltage instantaneously declines, and motor is rushed by machinery
It hits.Generation in order to prevent this phenomenon, can between permanent magnet synchronous motor and power frequency supply a starting reactor in parallel, with
Just inhibit the generation of dash current on startup.
Embodiment 2, a kind of converting operation method of the converting operation device of desulfurization single-stage high-speed centrifugal blower, including with
Lower step：
Step 1, start permanent magnet synchronous motor 1, frequency converter 2 and single-stage high-speed centrifugal blower 3；
Step 2, 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 3, 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 4, the controller of frequency converter 2 converts the adjustment signal according to the adjustment signal of the adjustment rotating speed received
After control signal, the inverter of control frequency converter 2 adjusts the voltage of output, frequency, and driving permanent magnet synchronous motor 1 is according to this electricity
Pressure and frequency work, and then change the output rotating speed of single-stage high-speed centrifugal blower 3.
Further, in step 1, when starting frequency converter 2, industrial-frequency alternating current is converted to direct current by the rectifier of frequency converter 2
Transformed direct current is filtered smoothly by the filter of electricity, frequency converter 2；
In step 4, according to the control signal of controller, inverter is by the DC conversion after filtering at voltage, frequency
Rate meets the alternating current of adjustment rotating speed, drives permanent magnet synchronous motor 1.
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 (5)
1. a kind of converting operation device of desulfurization single-stage high-speed centrifugal blower, which is characterized in that including：Permanent magnet synchronous motor
(1), the single-stage high-speed centrifugal blower (3) that is connected on the permanent magnet synchronous motor (1) and for permanent magnetism described in drive control
The frequency converter (2) of synchronous motor (1), frequency converter (2) input terminal are connected with power frequency supply, frequency converter (2) output end
It is connected with the permanent magnet synchronous motor (1) output shaft；
The frequency converter (2) is located in frequency conversion tank, including rectifier, filter, inverter and controller, the rectifier input
End is connected with power frequency supply, and the rectifier output end is connected with the filter input end, the filter output and institute
It states inverter input terminal to be connected, the inverter output end is connected with the permanent magnet synchronous motor (1) output shaft, the rectification
Device, the filter and the inverter are connected with the controller；
It is provided with speed probe on the single-stage high-speed centrifugal blower (3), the speed probe is connected with the controller；
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 motor (1) match with the single-stage high-speed centrifugal blower (3).
2. converting operation device according to claim 1, which is characterized in that the single-stage high-speed centrifugal blower (3) and institute
Permanent magnet synchronous motor (1) is stated by shaft coupling to be connected.
3. converting operation device according to claim 1, which is characterized in that the controller includes：
Detection circuit：Detect the filter filtering it is smooth after voltage, current signal；
Computing circuit：The speed signal of the speed probe is compared operation with electric current, the voltage signal of detection circuit,
Determine output voltage, the frequency of the inverter；
Driving circuit：The on, off of the switching device of the inverter is driven according to determining output voltage, frequency；
Protect circuit：According to the output voltage of the inverter inverter and institute are protected when overload or overvoltage occurs
State permanent magnet synchronous motor (1).
4. a kind of a kind of converting operation of the converting operation device of desulfurization single-stage high-speed centrifugal blower as described in claim 1
Method, which is characterized in that include the following steps：
Step 1, start permanent magnet synchronous motor (1), frequency converter (2) and single-stage high-speed centrifugal blower (3)；
Step 2, host computer calculates the single-stage high-speed centrifugal blower (3) according to the flow of oxidation wind needed for desulphurization system
Theoretical rotational speed；
Step 3, 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 4, the controller of the frequency converter (2) turns the adjustment signal according to the adjustment signal of the adjustment rotating speed received
After changing control signal into, the inverter for controlling the frequency converter (2) adjusts the voltage of output, frequency, drives the permanent-magnet synchronous
Motor (1) works according to this voltage and frequency, and then changes the output rotating speed of the single-stage high-speed centrifugal blower (3).
5. converting operation method according to claim 4, which is characterized in that described when starting frequency converter (2) in step 1
Industrial-frequency alternating current is converted to direct current by the rectifier of frequency converter (2), and the filter of the frequency converter (2) is by transformed direct current
Electricity is filtered smoothly；
In step 4, according to the control signal of the controller, the inverter is by the DC conversion after filtering at electricity
Pressure, frequency meet the alternating current of adjustment rotating speed, drive the permanent magnet synchronous motor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810456898.1A CN108457890A (en) | 2018-05-14 | 2018-05-14 | The converting operation device and converting operation method of desulfurization single-stage high-speed centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810456898.1A CN108457890A (en) | 2018-05-14 | 2018-05-14 | The converting operation device and converting operation method of desulfurization single-stage high-speed centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108457890A true CN108457890A (en) | 2018-08-28 |
Family
ID=63215449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810456898.1A Pending CN108457890A (en) | 2018-05-14 | 2018-05-14 | The converting operation device and converting operation method of desulfurization single-stage high-speed centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108457890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408260A (en) * | 2020-04-15 | 2020-07-14 | 大唐环境产业集团股份有限公司 | Operation system for canceling speed reducer of slurry circulating pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727050A (en) * | 2013-12-31 | 2014-04-16 | 欧派家居集团股份有限公司 | Constant-flow blower fan and control method thereof |
| CN203685622U (en) * | 2013-12-26 | 2014-07-02 | 广东泛仕达机电有限公司 | Constant-flow forward centrifugal fan |
| CN208364453U (en) * | 2018-05-14 | 2019-01-11 | 大唐环境产业集团股份有限公司 | The converting operation device of desulfurization single-stage high-speed centrifugal blower |
-
2018
- 2018-05-14 CN CN201810456898.1A patent/CN108457890A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203685622U (en) * | 2013-12-26 | 2014-07-02 | 广东泛仕达机电有限公司 | Constant-flow forward centrifugal fan |
| CN103727050A (en) * | 2013-12-31 | 2014-04-16 | 欧派家居集团股份有限公司 | Constant-flow blower fan and control method thereof |
| CN208364453U (en) * | 2018-05-14 | 2019-01-11 | 大唐环境产业集团股份有限公司 | The converting operation device of desulfurization single-stage high-speed centrifugal blower |
Non-Patent Citations (2)
| Title |
|---|
| 吴晓波;张磊;闫雪兰;李成军;赵娜;: "筒式永磁调速器在风机上的应用及节能分析", 甘肃科学学报, no. 04, 25 August 2017 (2017-08-25) * |
| 黄天旭;: "空气悬浮单级高速离心风机节能可行性分析", 风机技术, no. 01, 26 February 2013 (2013-02-26) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408260A (en) * | 2020-04-15 | 2020-07-14 | 大唐环境产业集团股份有限公司 | Operation system for canceling speed reducer of slurry circulating pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11329583B2 (en) | Generalized frequency conversion system for steam turbine generator unit | |
| Muljadi et al. | Power quality issues in a hybrid power system | |
| AU2008363040B2 (en) | Wind power generation system, and its control method | |
| US8183704B2 (en) | Connection and disconnection sequence for variable speed wind turbine having an exciter machine and a power converter not connected to the grid | |
| CN104329281B (en) | A kind of adjusting rotor blade formula air-introduced machine frequency conversion energy-saving system | |
| CN101982932B (en) | Disc water-cooling permanent magnet eddy current speed regulation device | |
| CN201167296Y (en) | Directly-drive type ac excitation wind power generator system | |
| US20130016537A1 (en) | Method for controlling a frequency converter and frequency converter | |
| KR20120024983A (en) | Variable-speed power generation device and control method therefor | |
| JP2010509537A (en) | Reversible hydroelectric generator | |
| CN101662247A (en) | Current-limiting soft-starting method of asynchronous motor under wideband power supply | |
| CN104578060A (en) | Method for selecting black-start diesel engine of SFC self-start gas turbine set | |
| CN208311112U (en) | A kind of desulfurization single-stage high-speed centrifugal blower speed-regulating system | |
| CN208364388U (en) | A kind of desulfurization roots blower speed regulation device | |
| US7633176B1 (en) | Direct drive induction electrical power generator | |
| CN208364453U (en) | The converting operation device of desulfurization single-stage high-speed centrifugal blower | |
| CN209752608U (en) | Wet flue gas desulfurization slurry circulating pump frequency conversion system of thermal power plant | |
| CN108457890A (en) | The converting operation device and converting operation method of desulfurization single-stage high-speed centrifugal blower | |
| CN109245662B (en) | VF control method of variable pitch motor | |
| CN108412798A (en) | A kind of desulfurization single-stage high-speed centrifugal blower governing system and speed regulating method | |
| EP2706229A1 (en) | Turbine and control system of the over-power of said turbine | |
| CN201474939U (en) | Energy-saving control device of condensate removal pump of gas-fired power plant | |
| CN208268070U (en) | A kind of converting operation device of desulfurization roots blower | |
| CN204985009U (en) | Frequency converter device of adjustable draught fan of movable vane | |
| CN108361198A (en) | A kind of the converting operation device and converting operation method of desulfurization roots blower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |