CN208311112U - A kind of desulfurization single-stage high-speed centrifugal blower speed-regulating system - Google Patents
A kind of desulfurization single-stage high-speed centrifugal blower speed-regulating system Download PDFInfo
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- CN208311112U CN208311112U CN201820713187.3U CN201820713187U CN208311112U CN 208311112 U CN208311112 U CN 208311112U CN 201820713187 U CN201820713187 U CN 201820713187U CN 208311112 U CN208311112 U CN 208311112U
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Abstract
The utility model relates to a kind of desulfurization single-stage high-speed centrifugal blower speed-regulating 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 includes: the copper conductor rotor being 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；Single-stage high-speed centrifugal blower is equipped with speed probe, and speed-regulating driver input terminal is connect with speed probe and host computer, and speed-regulating driver output end connect driving regulating mechanism movement with regulating mechanism.The utility model has the beneficial effects that increasing, auxiliary facility is few, and it is not necessary that original desulphurization system is largely transformed, cost of investment is small, can be realized biggish energy-saving effect, avoids the running energy waste of desulphurization system.
Description
Technical field
The utility model relates to a kind of desulfurization single-stage high-speed centrifugal blower speed-regulating systems.
Background technique
Guaranteeing normal, the stable operation of unit 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
Specific gravity 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, wherein the method for operation and control mode of Multi-stage centrifugal fan and single-stage high-speed centrifugal blower are substantially the same, Roots
The operation of blower and centrifugal blower is not identical.Centrifugal blower promotes the air quantity and pressure of fan outlet, wind using the revolving 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 the crushing of blower 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 biggish 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, so that the adjusting of flow, wind pressure is carried out, it is this
Method adjustment equipment is simple, but uneconomical, does not meet power conservation requirement.In order to guarantee that desulphurization system safe and 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 period
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, asynchronous motor can not embody energy-saving effect.
Utility model content
Aiming at the shortcomings existing in the above problems, the utility model provides a kind of desulfurization single-stage high-speed centrifugal blower
Speed-regulating system, single-stage high-speed centrifugal blower collocation permanent-magnet synchronous variable-frequency motor, increased auxiliary facility is few, without to original desulfurization
System is largely transformed, and cost of investment is small, and is adjusted the speed using permanent magnet coupling speed regulator, can be realized the biggish energy conservation effect of blower
Fruit avoids the running energy waste of desulphurization system.
To achieve the above object, the utility model provides a kind of desulfurization single-stage high-speed centrifugal blower speed-regulating system, including
The permanent magnet coupling speed regulator being connected between permanent-magnet synchronous variable-frequency motor and single-stage high-speed centrifugal blower, the permanent magnet coupling speed regulation
Device includes: the copper conductor rotor being fixed on the permanent-magnet synchronous variable-frequency motor output shaft, is fixed on the single-stage high-speed centrifugation
PM rotor on blower fan input shaft, for adjust between the copper conductor rotor and the PM rotor air gap thickness or
The regulating mechanism of person's engagement area, and the speed-regulating driver for driving the regulating mechanism；
Speed probe, the speed-regulating driver input terminal and the revolving 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 utility model has the following beneficial effects:
1, since variable speed is adjusted, flow is directly proportional to the first power of revolving speed, pressure and revolving 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, revolving speed can be made
Single-stage high-speed centrifugal blower is still run in high efficient district after adjusting, can be realized 0~25% energy conservation, even more；
2, the starting of single-stage high-speed centrifugal blower can gradually be run, and avoid starting and stopping suddenly for scene, Neng Gougeng
Equipment is protected well, increases the service life of equipment and its components, reduces site examining and repairing maintenance and maintenance cost；
3, permanent magnet coupling speed regulator reduces subsequent operation and maintenance cost without other accessories for machine components；
4, the operation conditions for the blower 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 less, energy conservation, economy
Excellent performance；
6, gearshift adjustment can reduce the noise of blower after reducing revolving speed, mitigate the abrasion of draught fan impeller, extend making for impeller
Use the service life；
7, biggish energy-saving effect and less maintenance cost be can be realized, the running energy of desulphurization system is also avoided
Waste.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of desulfurization single-stage high-speed centrifugal blower speed-regulating system of the utility model.
In figure:
1, permanent-magnet synchronous variable-frequency motor；2, permanent magnet coupling speed regulator；3, single-stage high-speed centrifugal blower.
Specific embodiment
As shown in Figure 1, a kind of desulfurization single-stage high-speed centrifugal blower speed-regulating system described in the utility model embodiment, 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 include: the copper conductor rotor being 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 blower, 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 movement with regulating mechanism；
Single-stage high-speed centrifugal blower 3 is used to for 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 following 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), for example 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 insertion torque, exceed loading capability, high power density, so that 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 needing to mention 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 decline (than with capacity asynchronous motor decline 30%), so that all service cable sections, supply transformer, mother's board in cabinet, opening
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 permanent-magnet synchronous frequency conversion replacement asynchronous machine is very simple and convenient.
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 revolving speed.It is high to change single-stage
The target of selection best operating point may be implemented in fast centrifugal blower revolving speed, actual air volume, that is, uninterrupted is rationally controlled, according to list
The revolving speed of the grade high-speed centrifugal fan revolving speed relationship directly proportional to power, single-stage high-speed centrifugal blower reduces, single-stage high-speed centrifugation
Blower 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 revolving speed of heart blower not only can change fan performance, but also energy-saving effect is obvious, meanwhile, single-stage high-speed centrifugal blower turns
When speed changes, efficiency is remained unchanged.
Desk permanent-magnet coupled speed regulator and tubular permanent magnet coupling speed regulator can be used in permanent magnet coupling speed regulator 2 of the 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, adjusts copper by the variation of air gap thickness
Transmitting torque between conductor rotor and PM rotor, to complete the adjusting of 3 revolving 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
Transmitting torque between body rotor and PM rotor, to complete the adjusting of 3 revolving speed of single-stage high-speed centrifugal blower.
Using the above-mentioned desulfurization speed regulating method of single-stage high-speed centrifugal blower speed regulation device, comprising the following steps:
Step 1, the flow of host computer oxidation wind according to needed for desulphurization system, calculates the reason of single-stage high-speed centrifugal blower 3
By revolving 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 adjusting revolving speed required for single-stage high-speed centrifugal blower 3；
Step 3, which is converted into electric current according to the adjustment signal of the adjustment revolving speed received by speed-regulating driver
Regulating mechanism movement is driven after signal, regulating mechanism adjusts the copper conductor being fixed on 1 output shaft of permanent-magnet synchronous variable-frequency motor and turns
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
Transmitting torque between copper conductor rotor and PM rotor, to change the output revolving speed of single-stage high-speed centrifugal blower.
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
Transmitting torque between copper conductor rotor and PM rotor, to complete the adjusting of 3 revolving speed of single-stage high-speed centrifugal blower.Step
Specific regulative mode in 3 are as follows: when adjusting revolving speed is to reduce revolving speed, speed-regulating driver drives regulating mechanism to increase copper conductor turn
Air gap thickness between son and PM rotor, copper conductor rotor is far from PM rotor, across the magnetic line of force of copper conductor rotor
Quantity reduces, and induced magnetic field becomes smaller, at this point, the transmitting torque between copper conductor rotor and PM rotor becomes smaller, single-stage high-speed
The output revolving speed of centrifugal blower becomes smaller；When adjusting revolving speed is to increase revolving speed, speed-regulating driver driving regulating mechanism, which reduces copper, is led
Air gap thickness between body rotor and PM rotor, copper conductor rotor is closer apart from PM rotor, passes through copper conductor rotor
Magnetic line of force quantity increase, induced magnetic field becomes larger, at this point, the transmitting torque between copper conductor rotor and PM rotor becomes larger,
The output revolving speed of single-stage high-speed centrifugal blower 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, adjusts copper by the variation of engagement area
Transmitting torque between conductor rotor and PM rotor, to complete the adjusting of 3 revolving speed of single-stage high-speed centrifugal blower.Step 3
In specific regulative mode are as follows: when adjust revolving speed be reduce revolving speed when, speed-regulating driver drive regulating mechanism reduce copper conductor turn
Engagement area between son and PM rotor, the magnetic line of force quantity for acting on copper conductor rotor reduce, and induced magnetic field becomes smaller, this
When, the transmitting torque between copper conductor rotor and PM rotor becomes smaller, and the output revolving speed of single-stage high-speed centrifugal blower becomes smaller；When
Adjustment revolving speed is when increasing revolving speed, and speed-regulating driver driving regulating mechanism increases nibbling between copper conductor rotor and PM rotor
Area is closed, the magnetic line of force quantity for acting on copper conductor rotor increases, and induced magnetic field becomes larger, at this point, copper conductor rotor and permanent magnet
Transmitting torque between rotor becomes larger, and the output revolving speed of single-stage high-speed centrifugal blower becomes larger.
After desulfurization of the invention single-stage high-speed centrifugal blower speed regulation device, desulphurization system and oxidation fan energy conservation drop
It is as follows to consume situation table:
From the results, it was seen that blower can be realized 0~25% energy conservation using this speed-regulating system, and 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 run in high efficient district.The starting energy of blower
It is enough gradually to run, starting and stopping suddenly for scene is avoided, equipment can be preferably protected, increases making for equipment and its components
With the service life, site examining and repairing maintenance and maintenance cost are reduced.The blower that scene can be adjusted according to the practical operation situation of unit
Operation conditions, reduce the waste of equipment, reduce scene operating cost.Adjustable range greatly, after variable speed do not add by pressure
Loss, and fan efficiency variation is less, and energy conservation, economic performance are good.The noise that blower can be reduced after reduction revolving speed, mitigates blower
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.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (1)
1. a kind of desulfurization single-stage high-speed centrifugal blower speed-regulating 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)
Include: the copper conductor rotor being fixed on the permanent-magnet synchronous variable-frequency motor output shaft, be fixed on the single-stage high-speed centrifugation wind
PM rotor on machine (3) gearbox input shaft is nibbled between the copper conductor rotor and the PM rotor for adjusting
Close the regulating mechanism of area, and the speed-regulating driver for driving the regulating mechanism；Wherein, the copper conductor rotor and institute
Stating PM rotor is cylindrical rotor；
Speed probe, the speed-regulating driver input terminal and the revolving 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).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820713187.3U CN208311112U (en) | 2018-05-14 | 2018-05-14 | A kind of desulfurization single-stage high-speed centrifugal blower speed-regulating system |
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| CN201820713187.3U CN208311112U (en) | 2018-05-14 | 2018-05-14 | A kind of desulfurization single-stage high-speed centrifugal blower speed-regulating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412798A (en) * | 2018-05-14 | 2018-08-17 | 大唐环境产业集团股份有限公司 | A kind of desulfurization single-stage high-speed centrifugal blower governing system and speed regulating method |
| 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 |
| USD928856S1 (en) * | 2019-06-11 | 2021-08-24 | Henan Changda Bee Industry Co., Ltd | Gearbox for honey centrifuge |
-
2018
- 2018-05-14 CN CN201820713187.3U patent/CN208311112U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412798A (en) * | 2018-05-14 | 2018-08-17 | 大唐环境产业集团股份有限公司 | A kind of desulfurization single-stage high-speed centrifugal blower governing system and speed regulating method |
| USD928856S1 (en) * | 2019-06-11 | 2021-08-24 | Henan Changda Bee Industry Co., Ltd | Gearbox for honey centrifuge |
| 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 |
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