CN109162940A - Magnetic suspension air blower and ventilating system - Google Patents
Magnetic suspension air blower and ventilating system Download PDFInfo
- Publication number
- CN109162940A CN109162940A CN201811051478.1A CN201811051478A CN109162940A CN 109162940 A CN109162940 A CN 109162940A CN 201811051478 A CN201811051478 A CN 201811051478A CN 109162940 A CN109162940 A CN 109162940A
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- China
- Prior art keywords
- main shaft
- bearing
- air blower
- magnetic suspension
- sliding bar
- 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.)
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/048—Bearings magnetic; electromagnetic
-
- 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
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of magnetic suspension air blower and ventilating systems, belong to air blower field.Above-mentioned air blower mainly includes main shaft, magneto and casing, transformer and voltage regulating device；Main shaft is cooperatively connected by transverse bearing, first axis bearing and the second axial bearing and casing inner supporting structure.The end of main shaft is provided with impeller, and magneto driving spindle and impeller rotate synchronously.Transverse bearing, first axis bearing and the second axial bearing have been all made of magnetic suspension bearing.Transformer is electrically connected with the second axial bearing, for providing electric energy to the second axial bearing；Voltage regulating device is used to adjust the output voltage of transformer.Output voltage can be adjusted dynamically in real time according to the size of axial force, can prevent main shaft from increasing with the raising frictional force of revolving speed；The magnetic suspension air blower for directly providing bigger output voltage is compared, moreover it is possible to save electric energy.
Description
Technical field
The present invention relates to air blower fields, in particular to a kind of magnetic suspension air blower and ventilating system.
Background technique
Air blower is that other in casing are discharged by discharge pipe using wheel rotation, so that generate negative pressure in casing,
Negative pressure is drawn air into, and the equipment that air is discharged by discharge pipe by wheel rotation again.Drive of the main shaft in magneto
Dynamic lower and impeller rotates together, and since air-flow is inhaled into from impeller end, and flow velocity is very fast；This makes main shaft should be by diameter
Xiang Li, again by axial force.Therefore, the connection of main shaft and casing needs transverse bearing and axial bearing to be respectively subjected to radial direction
Power and axial force.
In order to reduce the frictional force between main shaft and bearing, part air blower has used magnetic suspension bearing.Under normal circumstances,
For main shaft in rotation, the periphery and transverse bearing of main shaft keep certain gap, and the positioning ring of main shaft and axial axis side are kept
Certain gap；So that main shaft is vacant state.
In the prior art, the main shaft positioning ring adjacent with axial bearing may be with axial bearing friction.
Summary of the invention
The object of the present invention is to provide a kind of magnetic suspension air blowers, can be avoided positioning ring and rub with axial bearing
It wipes.
Another object of the present invention is to provide a kind of ventilating systems, and which employs above-mentioned magnetic suspension air blowers.
The present invention is implemented as follows:
A kind of magnetic suspension air blower, comprising:
Casing；The casing includes discharge pipe and blast pipe；
Main shaft, one end of the main shaft are provided with impeller, and restraining position ring block is arranged in the other end；Radial direction is arranged on the main shaft
Bearing, the two sides of the stop collar are provided with first axis bearing and the second axial bearing；The second axial bearing setting exists
Side of the stop collar far from the impeller；The transverse bearing, the first axis bearing and second axial bearing
It is electromagnetic type magnetic suspension bearing；
The main shaft is provided with the first permanent magnetic plate far from one end of impeller, and first permanent magnetic plate is perpendicular to the main shaft；
Transformer, the transformer include armature winding, secondary windings and iron core, the armature winding and it is described it is secondary around
Group is spirally wound on the iron core；The secondary windings includes the first terminals；
Voltage regulating device, the voltage regulating device include sliding bar, lever, connecting rod and sliding block；The sliding bar is set
It sets in the one end of the main shaft far from the impeller, and is parallel to the main shaft setting；The both ends of the sliding bar are respectively set
There is steel ball, one end of the sliding bar is abutted with first permanent magnetic plate；
The middle part of the lever is hinged by shaft and the casing；The end abutment of the sliding bar and the lever,
The other end of the lever and the connecting rod are hinged；The connecting rod and the sliding block are hinged；The sliding block includes block and conduction
Portion, the block are slidably connected by conductive part and the secondary windings；The lever, the connecting rod and the sliding block constitute bent
Handle slide block mechanism；
The axial wind-force that the main shaft is subject to is determined as reference direction, described when the sliding bar is moved along reference direction
Conductive part is moved towards the direction far from first terminals；
It is provided with the second terminals on the conductive part, first terminals, second terminals are with described
The electrical connection of two axial bearings.
Further,
One end that the lever is used to abut with the sliding bar is provided with the second permanent magnetic plate, and the both ends of the sliding bar are set
It is equipped with groove, the steel ball is embedded in the groove, and the steel ball rotatably cooperates with the sliding bar；
It is one end that shaft is used to abut with the sliding bar close to the lever on the lever.
Further,
The surface of first permanent magnetic plate is provided with recess portion, is coated with lubricant in the recess portion；Described sliding bar one end
Steel ball and the recess surface cooperate；Strip groove, setting in the strip groove are provided on the surface of second permanent magnetic plate
There is lubricant, steel ball and the strip groove of the sliding bar other end are slidably matched.
Further,
It is provided with blind hole in the block of the sliding block one side opposite with the iron core, is provided with first in the blind hole
The free end of compressed spring, first compressed spring is provided with rolling element；
The casing includes guide wall；The rolling element is slidably matched with the guide wall；
Chamfering is provided in the one side that the conductive part is matched with the iron core.
Further,
The lever, connecting rod and block are all made of light plastic and are made；The casing includes guide cylinder, in the guide cylinder
It is provided with linear bearing.
Further,
It further include lubricating arrangement, the lubricating arrangement includes fuel tank, fuel feed pump and oil return pipe；The both ends of the guide cylinder are set
It is equipped with sealing ring, the sealing ring, the guide cylinder and sliding bar surround oil storage space；The fuel tank by the fuel feed pump and
The oil return pipe is connected to the oil storage space；Oil pump is provided on the fuel feed pump.
Further,
It further include voltage-stablizer, the secondary coil of the transformer is electrically connected by the voltage-stablizer and second axial bearing
It connects.
Further,
Cooperation section is provided on the main shaft, the cooperation section is used to cooperate with transverse bearing；It is arranged in the cooperation section
Have multiple mounting grooves, the mounting groove along the main shaft uniform ring around distribution；Permanent magnet is provided in the mounting groove；
The transverse bearing includes multiple electromagnet, and the electromagnet is distributed around the cooperation section, the adjacent electromagnetism
Iron is less than the adjacent mounting groove in the spacing of circumferencial direction in the spacing of circumferencial direction.
Further,
The mounting groove is wedge groove, and the permanent magnet and the mounting groove are interference fitted.
Further,
The both ends setting of the sliding bar is fluted, and retainer is provided in the groove, and the steel ball is arranged described
In retainer, the steel ball can be freely rotated；
The sliding bar further includes storage holes, and the storage holes extend along the length direction of the sliding bar, and by two
The groove connection；Lubricant is provided in the storage holes；Oil filler point, the oil filler point are provided in the middle part of the sliding bar
It is connected to the storage holes.
Further,
It further include oil fuel tube, one end of the oil fuel tube is connected to the oil filler point, and the other end is provided with nut, and leads to
Outside the casing.
Further,
The lever is stretching structure, including outer cylinder and interior bar, the outer cylinder and the casing be hinged；The interior bar and institute
It is hinged to state connecting rod；
It is provided with threaded hole on the barrel of the outer cylinder, screw, the end of thread of the screw are provided in the threaded hole
It is abutted with the body of rod of the interior bar；
The second compressed spring, one end of second compressed spring and the cylinder bottom of the outer cylinder are additionally provided in the outer cylinder
It abuts, the end abutment of the other end and the interior bar.
Further,
It further include controller and alarm, the bottom of the outer cylinder is provided with pressure sensor, and the pressure sensor is used
In the pressure for measuring second compressed spring；The controller is electrically connected with the alarm and the pressure sensor.
Further,
The controller is single-chip microcontroller or PLC.
Further,
The controller includes storage unit, the fluctuating range of the measurement numerical value of the pressure sensor within a preset time
When greater than preset value, the alarm can alarm；The preset value is pre-stored in the storage unit.
Further,
The alarm is buzzer siren.
Further,
Further include controller, temperature sensor, the controller and the temperature sensor are provided on the transformer
Electrical connection.
Further,
It further include cooling device, the cooling device includes guide duct, one end of the guide duct and the discharge pipe
Tube wall connection, the other end lead to the transformer.
Further,
Valve plate is provided in the guide duct, the guide duct is to be provided with driving motor, and the valve plate passes through drive shaft
It is rotatably connected with the tube wall of the guide duct；The drive shaft is connected by turbine worm reducer and driving motor transmission
It connects；
The controller is electrically connected with the driving motor.
Further,
The guide duct includes round tube and conical tube, and one end of the round tube is connect with the discharge pipe, the other end
It is connect with the big end of the conical tube.
Further,
The small end of the conical tube is additionally provided with helix tube, the small end company of one end of the helix tube and the conical tube
It connects, the other end leads to the transformer.
Further,
The driving motor is servo motor.
Further,
Restraining position ring block is set in the guide duct, and the surface of the stop collar is provided with sealing strip, and the valve plate can be with
The stop collar sealing cooperation.
Further,
The leeward side of the stop collar is arranged in the sealing strip, and multiple countersunk head through-holes, institute are provided on the sealing strip
It states and is correspondingly arranged on multiple threaded holes on stop collar；Screw is provided in the through-hole and the threaded hole.
Further,
The sealing strip is made by soft copper.
Ventilating system described in a kind of ventilating system includes ventilation duct and the magnetic suspension air blower, the air hose with it is described
The casing of magnetic suspension air blower connects.
Further,
The ventilation duct includes connecting tube, the first delivery pipe and the second delivery pipe, the connecting tube by flange with it is described
The discharge pipe of magnetic suspension air blower is detachably connected；The connecting tube passes through tee tube and first delivery pipe and described second
Delivery pipe connection.
Further,
The tee tube includes main pipe, the first branch pipe and the second branch pipe, and adjustable plate, the adjusting are provided in the main pipe
Plate is rotatably connected by connecting shaft and the main pipe；The adjustable plate can adjust the wind of first branch pipe and the second branch pipe
Amount；
The end vertical of the connecting shaft is connected with rocking bar, and the rocking bar is arranged outside the main pipe；The rocking bar with
The main pipe is detachably connected.
Further,
The main pipe is rectangular tube, and connecting plate is provided on the main pipe, and the tube wall of the connecting plate and the main pipe is flat
Row interval setting；
Arc-shaped connecting hole is provided on the connecting plate, the free end of the rocking bar is provided with bolt, the bolt
Grafting in the connecting hole, and can be moved along the connecting hole；There are two nuts, the nut to set for setting on the bolt
It sets in the two sides of the connecting plate.
Further, the rocking bar is parallel to the adjustable plate.
The beneficial effects of the present invention are:
The magnetic suspension air blower and ventilating system that the present invention obtains by above-mentioned design work as the speed of mainshaft when in use
Accelerate, when the axial force that impeller and main shaft are subject to is bigger, main shaft can do micro move along Impact direction.The micro movement of main shaft
Lever rotation can be pushed by sliding bar, lever is mobile by connecting rod band movable slider.Due to the conducting block and secondary on sliding block
Coil contact is provided with the second terminals on conducting block, this makes the coil number between the first terminals and the second terminals paper
Amount increases；So that transformer output voltage increases.The increase of output voltage is so that the electric current of the second axial bearing increases, phase
The magnetic field strength for the second axial bearing answered increases；So that the axial thrust that is subject to of positioning ring increases, prevent positioning ring with
Second axial bearing friction.That is, output voltage can be adjusted dynamically in real time according to the size of axial force, can prevent main shaft with
The raising frictional force of revolving speed increases；The magnetic suspension air blower for directly providing bigger output voltage is compared, moreover it is possible to save electricity
Energy.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the overall structure diagram for the magnetic suspension air blower that embodiment of the present invention provides；
Fig. 2 is the main shaft and transverse bearing, first axis bearing and the second axial bearing that embodiment of the present invention provides
Structural schematic diagram；
Fig. 3 is the partial structural diagram for Fig. 1 that embodiment of the present invention provides；
Fig. 4 is the structural schematic diagram of the transformer that embodiment of the present invention provides and sliding block；
Fig. 5 is the structural schematic diagram for the sliding bar that embodiment of the present invention provides；
Fig. 6 is that embodiment of the present invention provides the structural schematic diagram of sliding block；
Fig. 7 is the structural schematic diagram for the tee tube that embodiment of the present invention provides.
Icon: 100- magnetic suspension air blower；110- casing；112- guide cylinder；1122- linear bearing；114- guide wall；
116- blast pipe；118- discharge pipe；119- cooling device；1191- round tube；1192- conical tube；1193- helix tube；120- master
Axis；122- impeller；124- stop collar；The first permanent magnetic plate of 126-；130- transverse bearing；141- first axis bearing；142- second
Axial bearing；150- transformer；152- armature winding；154- secondary windings；The first terminals of 1541-；The second wiring of 1542-
End；156- iron core；160- voltage regulating device；161- sliding bar；1612- steel ball；162- lever；The second permanent magnetic plate of 1622-；
163- connecting rod；164- sliding block；1642- conductive part；1644- rolling element；170- lubricating arrangement；180- voltage-stablizer；190- Permanent Magnet and Electric
Machine；210- tee tube；The first branch pipe of 211-；The second branch pipe of 212-；213- main pipe；2131- connecting plate；220- rocking bar.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below to protect
The scope of the present invention of shield, but it is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.
In the description of the present invention, it is to be understood that, indicating position or the term of positional relationship are based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the equipment of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be on or below second feature
Directly contacted including the first and second features, also may include the first and second features be not direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature second spy
Right above sign and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature second feature it
Under, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of first feature horizontal height
Less than second feature.
Embodiment:
It mainly include main shaft 120, Permanent Magnet and Electric referring to FIG. 1, present embodiments providing a kind of magnetic suspension air blower 100
Machine 190 and casing 110 (casing 110 illustrate only partial structurtes in attached drawing), transformer 150 and voltage regulating device 160, it is main
Axis 120 is cooperated by transverse bearing 130, first axis bearing 141 and the second axial bearing 142 with 110 inner supporting structure of casing
Connection.The end of main shaft 120 is provided with impeller 122, and 190 driving spindle 120 of magneto and impeller 122 rotate synchronously.It is radial
Bearing 130, first axis bearing 141 and the second axial bearing 142 have been all made of magnetic suspension bearing.Transformer 150 and the second axis
It is electrically connected to bearing 142, for providing electric energy to the second axial bearing 142；Voltage regulating device 160 is for adjusting transformer
150 output voltage.
With continued reference to FIG. 1, magnetic suspension air blower 100 includes casing 110 and main shaft 120, bearing is provided in casing 110
Support construction is used to support main shaft 120.The other structures of casing 110 and the no too big association of inventive point of the invention, therefore no longer
Other structures are described in detail.Main shaft 120 passes through two transverse bearings 130, first axis bearing 141 and the second axial axis
142 are held to be cooperatively connected with bearing support structure.
Such as Fig. 2, main shaft 120 includes first end and second end, and impeller 122 is arranged in first end, and the position close to second end is set
It is equipped with positioning ring, positioning ring is used to limit main shaft 120 in axial position；The setting of first axis bearing 141 is close in positioning ring
The side of impeller 122, for preventing the play (with Fig. 1 for reference) to the left of main shaft 120；The setting of second axial bearing 142 is positioning
The other side of ring, for preventing the play (with Fig. 1 for reference) to the right of main shaft 120.The middle part of main shaft 120 is provided with magneto
190, magneto 190 is electrically connected with external power supply, is rotated for driving spindle 120.
Cooperation section is provided on main shaft 120, cooperation section is used to cooperate with transverse bearing 130；It is provided in cooperation section multiple
Mounting groove, mounting groove along main shaft 120 uniform ring around distribution；Permanent magnet is provided in mounting groove；Permanent magnet and mounting groove interference
Cooperation.Transverse bearing 130 includes multiple electromagnet, and electromagnet is around cooperation section distribution, and adjacent electromagnet is between circumferencial direction
Away from be less than adjacent fitting grooves circumferencial direction spacing.When above-mentioned design is so that main shaft 120 runs at high speed, the vibration of main shaft 120
It is smaller；And permanent magnet is not easy to loosen when frequent stress, further decreases the vibration of main shaft 120.
Transverse bearing 130 is electrically connected with external power, and in other embodiments, transverse bearing 130 can also be with transformer
150 electrical connections.
As shown in Figure 1, Figure 3 and Figure 4, transformer 150 is arranged in casing 110 comprising armature winding 152, secondary windings 154
With iron core 156, the generally square box structure of iron core 156.The armature winding 152 and the equal spiral winding of the secondary windings 154
On two opposite sides of the iron core 156；The secondary windings 154 includes the first terminals 1541 and the second terminals
1542, the lower part (with Fig. 1 for reference) of secondary windings 154, the position of the second terminals 1542 is arranged in the first terminals 1541
It is not fixed, is slidably connected with secondary windings 154, can move up and down, to change the circle number of the active coil of secondary coil.
Armature winding 152 is connect with external power supply；Secondary windings 154 passes through the first terminals 1541 and the second terminals 1542 and second
Axial bearing 142 is electrically connected, for powering to the second axial bearing 142.
With continued reference to FIG. 1, the axial wind-force that main shaft 120 is subject to can determine a reference direction when main shaft 120 rotates
(i.e. the direction A in Fig. 1), the air outside casing 110 are entered in casing 110 by air inlet along reference direction, and by going out
Air port flows out to outside casing 110 along the direction B.Therefore, when 120 revolving speed of main shaft is very fast, axial force that main shaft 120 is subject to along the direction A
It is bigger.At this point, positioning ring is possible to directly rub with the second axial bearing 142.
Voltage regulating device 160 is also provided in the present embodiment, the axial force for enabling to main shaft 120 to be subject to increases
When, the magnetic field strength of the second axial bearing 142 can increase automatically, prevent positioning ring from rubbing with it.
Such as Fig. 3, voltage regulating device 160 includes sliding bar 161, lever 162, connecting rod 163 and sliding block 164；The sliding
The one end of the main shaft 120 far from the impeller 122 i.e. second end of main shaft 120 is arranged in bar 161, and is parallel to the main shaft
120 settings.Sliding bar 161 is slidably matched with the guide cylinder 112 (Fig. 5) in casing 110 by linear bearing 1122.
Lever 162 is hinged by shaft and casing 110；The end abutment of sliding bar 161 and lever 162, lever 162 it is another
One end and connecting rod 163 are hinged；Connecting rod 163 it is hinged with sliding block 164；Sliding block 164 includes block and conductive part 1642, and block passes through
Conductive part 1642 is slidably connected with secondary windings 154；Lever 162, connecting rod 163 and sliding block 164 constitute slider-crank mechanism；Sliding
When bar 161 is moved along reference direction, conductive part 1642 is moved towards the direction far from the first terminals 1541；It is set on conductive part 1642
The second terminals 1542 are equipped with, the first terminals 1541 are electrically connected with the second terminals 1542 with the second axial bearing 142.
The working principle of voltage regulating device 160 is as follows:
Due to main shaft 120 when wind-force is bigger may to the right play (with Fig. 1 be reference)；At this point, main shaft 120
Sliding bar 161 is pushed to move right, sliding bar 161 pushes lever 162 to rotate, and lever 162 is by connecting rod 163 with movable slider 164
It moves upwards, so that the distance between the first terminals 1541 and second terminals increase, the circle number of active coil is increased；To
So that 150 output voltage of transformer increases, so that the magnetic field strength of the second axial bearing 142 increases, positioning ring is reduced
The probability collided with it.
Further, as shown in figure 5, the both ends setting of sliding bar 161 is fluted, lubricant is coated on the inner wall of groove；
Retainer (not shown) is installed, steel ball is arranged in the retainer, and steel ball 1612 can be in groove certainly in groove
By rotating；Retainer can prevent steel ball from falling off from groove.Sliding bar further includes storage holes, length of the storage holes along sliding bar
Direction extends, and two grooves are connected to；Lubricant is provided in storage holes；The middle part of sliding bar 161 is provided with oil filler point, note
Oilhole is connected to storage holes.For the ease of adding lubricating oil, oil fuel tube (not shown), the note are additionally provided on oil filler point
The other end of oil pipe is provided with nut, and leads to outside casing.
The second end of main shaft 120 is provided with the first permanent magnetic plate 126, and the surface of the first permanent magnetic plate 126 is provided with recess portion, sliding
The steel ball 1612 of 161 left end of bar (being reference with Fig. 1) and the inner surface of recess portion cooperate.Using steel ball 1612 and the first permanent magnetic plate
126 cooperations, frictional force of the sliding bar 161 to the first permanent magnetic plate 126 when this can not only reduce the rotation of main shaft 120；It can also make
When (being reference with Fig. 1) movement to the left of main shaft 120, main shaft 120 pulls sliding bar 161 to move to left by the first permanent magnetic plate 126.
One end that lever 162 is abutted with sliding bar 161 is provided with the second permanent magnetic plate 1622, is arranged on the second permanent magnetic plate 1622
There is vertical strip groove, the steel ball 1612 of 161 right end of sliding bar and the slot bottom of strip groove are slidably matched.Above structure to slide
When bar 161 moves to left, sliding bar 161 can be resetted by steel ball 1612 and 1622 pull lever 162 of the second permanent magnetic plate, and due to
Steel ball 1612 can rotate, and when lever 162 rotates, sliding bar 161 can be slided up and down relative to the second permanent magnetic plate 1622.And thick stick
One end that shaft on bar 162 is used to abut with the sliding bar 161 close to the lever 162, this makes the micro- of sliding bar 161
Amount displacement can be amplified, so that sliding block 164 can still be able to have along iron core 156 when sliding bar 161 only has microdisplacement
Biggish displacement, and then change output voltage；I.e. above-mentioned design can be improved the response sensitivity that voltage adjusts axial force.
Further, above-mentioned lever 162 is stretching structure, including outer cylinder and interior bar, outer cylinder be hinged with casing；Interior bar and connecting rod
Hingedly.This makes lever be capable of increasing or reduce close to the arm of force of transformer one end；When the fortune of lever bottom end (being reference with Fig. 1)
Dynamic one timing of amplitude, the length for adjusting lever can change the motion amplitude of lever upper end, to adjust the amplitude of voltage change.
That is, sensitivity of the voltage change to motion of main shaft can be adjusted by the length for changing lever.
Specifically, it is provided with threaded hole on the barrel of outer cylinder, screw, the end of thread and interior bar of screw are provided in threaded hole
The body of rod abut；The second compressed spring is additionally provided in outer cylinder, one end of the second compressed spring is abutted with the cylinder bottom of outer cylinder, another
The end abutment at end and interior bar.When needing to adjust lever length, the screw in threaded hole is first unclamped, adjusts and arrives suitable length
Afterwards, it is fixed to tighten screw.After unclamping screw, due to the self weight of the length of sliding block and connecting rod, interior bar may be fallen directly on
Outer cylinder bottom simultaneously generates certain impact, and it is bad by drawing that this may cause the second connection end on sliding block；Second compressed spring is set
Afterwards, the second compressed spring can play buffer function, and the second terminals on anti-limited slip block are drawn bad.
In addition, magnetic suspension air blower is also provided with controller (not shown), the bottom of outer cylinder is provided with pressure sensing
Device, pressure sensor are used to measure the pressure of second compressed spring；Controller and the alarm and the pressure sensing
Device electrical connection.Pressure sensor is used to measure the pressure of second compressed spring；Controller and alarm and pressure sensor
Electrical connection.Controller includes storage unit, and the fluctuating range of the measurement numerical value of pressure sensor within a preset time is greater than default
When value, alarm can alarm；Preset value is pre-stored in storage unit.When the screw on lever outer cylinder loosens automatically, by
In the vibration of magnetic suspension air blower main shaft, lever may vibrate in outer cylinder；This leads to the measurement numerical value of pressure sensor not
Stablize.When controller detects that measurement numerical fluctuations amplitude is greater than preset value, illustrate that screw has loosened, alarm equipment alarm prompt
Staff overhauls in time.
Further, since transformer works by cabinet enclosure, and transformer can generate a large amount of heat during the work time
Amount.Therefore, transformer temperature is excessively high in order to prevent, is also provided with cooling device and temperature sensor.Temperature sensor setting exists
On transformer, it to be used for real-time monitoring temperature change.When temperature be higher than preset value when, controller start cooling device to transformer into
Row cooling.
Specifically, cooling device 119 includes guide duct, and guide duct includes round tube 1191, conical tube 1192 and helix tube
1193, one end of round tube 1191 is connect with discharge pipe 118, and the other end is connect with the big end of conical tube 1192；Conical tube 1192
Small end connect with helix tube 1193, the air outlet of helix tube 1193 is arranged near transformer 150.Conical tube 1192 can be right
Carry out wind to be accelerated, helix tube 1193 makes to get wind in 150 attachment of transformer formation vortex, so that high-speed eddy is to transformer
150 different parts are cooled down, and can take away more heat.Come after wind passes through from transformer 150, eventually by impeller
122 are discharged into discharge pipe 118.
In order to control the open and close and ventilation quantity of guide duct, valve plate is provided in guide duct.Guide duct is to be provided with
Driving motor, valve plate are rotatably connected by the tube wall of drive shaft and guide duct.Drive shaft is by turbine worm reducer and drives
Dynamic motor drive connection；Controller is electrically connected with driving motor.The detection numerical value of temperature sensor is higher, the rotation of driving motor
Angle is bigger, so that the aperture of valve is bigger, ventilation quantity is bigger.Due to being provided with turbine worm reducer, when driving electricity
When machine stops operating, valve plate is able to maintain in fixed position.When temperature sensor detection numerical value is lower than preset value, controller control
Valve plate processed is closed.At this point, setting restraining position ring block in guide duct, the surface of stop collar is provided with soft in order to enable valve plate does not leak out
The sealing strip that copper is made, valve plate can be sealed with stop collar to be cooperated.
Also, the leeward side of stop collar is arranged in sealing strip, is provided with multiple countersunk head through-holes on sealing strip, right on stop collar
Multiple threaded holes should be provided with；Screw is provided in through-hole and threaded hole.Above-mentioned design is so that sealing strip is not easy to be blown off.
Further, such as Fig. 6, it is provided with blind hole in the block of sliding block 164 one side opposite with iron core, is provided in blind hole
First compressed spring, the free end of the first compressed spring are provided with rolling element 1644；Casing 110 includes guide wall 114；Rolling element
1644 are slidably matched with guide wall 114；Chamfering is provided in the one side that conductive part 1642 is matched with iron core.Above-mentioned design can
Enough so that conductive part 1642 contacts well with secondary coil, additionally it is possible to reduce the frictional force of sliding block 164 Yu guide wall 114, improve
The sensitivity that voltage is adjusted.
Such as Fig. 1 and Fig. 6, in order to further increase the sensitivity of voltage adjusting, magnetic suspension air blower 100 is also provided with lubrication
Device 170, for being lubricated to the linear bearing 1122 on sliding bar 161.Lubricating arrangement 170 includes fuel tank, fuel feed pump and oil return
Pipe；The both ends of guide cylinder 112 are provided with sealing ring, and sealing ring, guide cylinder 112 and sliding bar 161 surround oil storage space；Fuel tank is logical
It crosses fuel feed pump and oil return pipe is connected to oil storage space；Oil pump is provided on fuel feed pump.
Embodiment 2:
Present embodiments provide a kind of ventilating system comprising the magnetic suspension air blower 100 in ventilation duct and embodiment 1,
Ventilation duct is connect with the casing 110 of the magnetic suspension air blower 100.
In order to enable air blower can give different region air feeds, in the present embodiment, ventilation duct includes connecting tube, first defeated
Pipe and the second delivery pipe are sent, connecting tube is detachably connected by the discharge pipe of flange and magnetic suspension air blower；Connecting tube passes through three
Siphunculus is connect with the first delivery pipe and the second delivery pipe.
Such as Fig. 7, for the ease of adjusting the air quantity of the first delivery pipe and the second delivery pipe, tee tube 210 include main pipe 213,
First branch pipe 211 and the second branch pipe 212, adjustable plate is provided in main pipe 213, and adjustable plate can be turned by connecting shaft with main pipe 213
Dynamic connection；The air quantity of the first branch pipe 211 and the second branch pipe 212 can be adjusted by rotating adjustable plate；The end vertical of connecting shaft
It is connected with rocking bar 220, rocking bar 220 is arranged outside main pipe 213；Rocking bar 220 is detachably connected with main pipe 213.
Specifically, main pipe 213 is rectangular tube, and connecting plate 2131, connecting plate 2131 and main pipe 213 are provided on main pipe 213
Tube walls parallel interval setting；Arc-shaped connecting hole is provided on connecting plate 2131, the free end of rocking bar 220 is provided with spiral shell
Bolt, bolt are plugged in connecting hole, and can be moved along connecting hole；There are two nuts, nut setting to connect for setting on bolt
The two sides of plate 2131.
When needing to adjust the air quantity in the first delivery pipe and the second delivery pipe, rocking bar 220 and connecting plate 2131 are first unclamped
Connection, then rotating rocker 220, at this point, adjustable plate rotates synchronously；After turning to suitable position, by rocking bar 220 with connect
Plate 2131 connects.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of magnetic suspension air blower characterized by comprising
Casing, the casing include discharge pipe and blast pipe；
Main shaft, one end of the main shaft are provided with impeller, and restraining position ring block is arranged in the other end；Radial axle is arranged on the main shaft
It holds, the two sides of the stop collar are provided with first axis bearing and the second axial bearing；Second axial bearing is arranged in institute
State side of the stop collar far from the impeller；The transverse bearing, the first axis bearing and second axial bearing are equal
For electromagnetic type magnetic suspension bearing；
The main shaft is provided with the first permanent magnetic plate far from one end of impeller, and first permanent magnetic plate is perpendicular to the main shaft；
Transformer, the transformer include armature winding, secondary windings and iron core, and the armature winding and the secondary windings are equal
It is spirally wound on the iron core；The secondary windings includes the first terminals；
Voltage regulating device, the voltage regulating device include sliding bar, lever, connecting rod and sliding block；The sliding bar setting exists
The one end of the main shaft far from the impeller, and it is parallel to the main shaft setting；The both ends of the sliding bar are respectively arranged with steel
Ball, one end of the sliding bar are abutted with first permanent magnetic plate；
The lever is hinged by shaft and the casing；The end abutment of the sliding bar and the lever, the lever
The other end and the connecting rod are hinged；The connecting rod and the sliding block are hinged；The sliding block includes block and conductive part, the block
It is slidably connected by conductive part and the secondary windings；The lever, the connecting rod and the sliding block constitute slider-crank mechanism；
The axial wind-force that the main shaft is subject to is determined as reference direction, when the sliding bar is moved along reference direction, the conduction
Portion is moved towards the direction far from first terminals；
Be provided with the second terminals on the conductive part, first terminals, second terminals with second axis
It is electrically connected to bearing.
2. magnetic suspension air blower according to claim 1, it is characterised in that:
One end that the lever is used to abut with the sliding bar is provided with the second permanent magnetic plate, and the both ends of the sliding bar are provided with
Groove, the steel ball are embedded in the groove, and the steel ball rotatably cooperates with the sliding bar；
One end that shaft on the lever is used to abut with the sliding bar close to the lever.
3. magnetic suspension air blower according to claim 2, it is characterised in that:
The surface of first permanent magnetic plate is provided with recess portion, is coated with lubricant in the recess portion；The steel of described sliding bar one end
Ball and the recess surface cooperate；It is provided with strip groove on the surface of second permanent magnetic plate, profit is provided in the strip groove
Lubrication prescription, steel ball and the strip groove of the sliding bar other end are slidably matched.
4. magnetic suspension air blower according to claim 1, it is characterised in that:
It is provided with blind hole in the block of the sliding block one side opposite with the iron core, the first compression is provided in the blind hole
The free end of spring, first compressed spring is provided with rolling element；
The casing includes guide wall；The rolling element is slidably matched with the guide wall；
Chamfering is provided in the one side that the conductive part is matched with the iron core.
5. magnetic suspension air blower according to claim 1, it is characterised in that:
The lever, connecting rod and block are all made of light plastic and are made；The casing includes guide cylinder, setting in the guide cylinder
There is linear bearing.
6. magnetic suspension air blower according to claim 5, it is characterised in that:
It further include lubricating arrangement, the lubricating arrangement includes fuel tank, fuel feed pump and oil return pipe；The both ends of the guide cylinder are provided with
Sealing ring, the sealing ring, the guide cylinder and sliding bar surround oil storage space；The fuel tank passes through the fuel feed pump and described
Oil return pipe is connected to the oil storage space；Oil pump is provided on the fuel feed pump.
7. magnetic suspension air blower according to claim 1, it is characterised in that:
It further include voltage-stablizer, the secondary coil of the transformer is electrically connected by the voltage-stablizer with second axial bearing.
8. magnetic suspension air blower according to claim 1, it is characterised in that:
Cooperation section is provided on the main shaft, the cooperation section is used to cooperate with transverse bearing；It is provided in the cooperation section more
A mounting groove, the mounting groove along the main shaft uniform ring around distribution；Permanent magnet is provided in the mounting groove；
The transverse bearing includes multiple electromagnet, and the electromagnet is distributed around the cooperation section, and the adjacent electromagnet exists
The spacing of circumferencial direction is less than the adjacent mounting groove in the spacing of circumferencial direction.
9. magnetic suspension air blower according to claim 8, it is characterised in that:
The mounting groove is wedge groove, and the permanent magnet and the mounting groove are interference fitted.
10. a kind of ventilating system, which is characterized in that the ventilating system includes described in ventilation duct and any one of claim 1 to 9
Magnetic suspension air blower, the air hose connect with the casing of the magnetic suspension air blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051478.1A CN109162940B (en) | 2018-09-10 | 2018-09-10 | Magnetic suspension air blower and ventilating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051478.1A CN109162940B (en) | 2018-09-10 | 2018-09-10 | Magnetic suspension air blower and ventilating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109162940A true CN109162940A (en) | 2019-01-08 |
| CN109162940B CN109162940B (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811051478.1A Active CN109162940B (en) | 2018-09-10 | 2018-09-10 | Magnetic suspension air blower and ventilating system |
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| CN (1) | CN109162940B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112185673A (en) * | 2020-09-02 | 2021-01-05 | 中铁第一勘察设计院集团有限公司 | Voltage stabilizing transformer based on self-adaptive on-load tap-changer |
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| CN107035702A (en) * | 2017-05-03 | 2017-08-11 | 上海大学 | Vertical permanent magnet suspension monopole centrifugal blower |
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| CN2773358Y (en) * | 2005-03-11 | 2006-04-19 | 谢丹平 | High-speed magnetic-suspension centrifugal blower |
| KR20130032607A (en) * | 2011-09-23 | 2013-04-02 | 한국전력공사 | Magnetic bearing and ball bearing combined type flywheel energy storage device |
| CN202550931U (en) * | 2012-05-12 | 2012-11-21 | 济南大学 | Force-control-based magnetic suspension system adopting radial and axial magnetic bearings |
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| CN112185673A (en) * | 2020-09-02 | 2021-01-05 | 中铁第一勘察设计院集团有限公司 | Voltage stabilizing transformer based on self-adaptive on-load tap-changer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109162940B (en) | 2019-06-04 |
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