CN109139510A - High-speed and energy-saving single-stage mine local fan - Google Patents
High-speed and energy-saving single-stage mine local fan Download PDFInfo
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- CN109139510A CN109139510A CN201811037910.1A CN201811037910A CN109139510A CN 109139510 A CN109139510 A CN 109139510A CN 201811037910 A CN201811037910 A CN 201811037910A CN 109139510 A CN109139510 A CN 109139510A
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- impeller
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
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- 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
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of high-speed and energy-saving single-stage mine local fan, unique single-stage motor is arranged in every mine local fan, and wherein single-stage motor speed V is 4000-6000rpm, and the bearing of single-stage motor is 4 grades of bearings or 6 grades of bearings；The output frequency for mentioning frequency module 2 is greater than distribution system rated frequency H0, and the frequency range delta H that mentions for mentioning frequency module meets following formula: Δ H=V*P/60-H0.Unique impeller is arranged in every mine local fan, and impeller at least has one of following three kinds of performances or a variety of: 200-960 σb/ MPa, yield strength are 165-445 σp0.2/MPa；Elongation 7-40 σ5/ %.Beneficial effects of the present invention are the integrated compact design using single-stage motor, and creative giving mentions the core components such as frequency module, the corresponding bearing of single-stage motor, particular impeller, to solve above-mentioned high revolving speed bring technology barrier, and then a kind of high-speed and energy-saving single-stage mine local fan for substituting rotating axis stream booster is provided, the social benefit with significant energy-saving and emission-reduction.
Description
Technical field
The invention belongs to Local Ventilation Equipment in Coal Mine field, in particular to a kind of high-speed and energy-saving single-stage mine local fan.
Background technique
Quo of local Fan for Mine is developed so far, and mainstream type includes common axial ventilator and convection rotary type local ventilation
Machine.Such as the 68 serial mixed-flow local ventilations that CBM type booster, the Britain Kcith-Blackma of Russia are produced
Machine, " B " series of Davilson company of Britain production and " A series " booster (axial-flow electric fan for local ventilation), Japan three
Jing Zhushihuishesanchi makes " FMA " produced serial ventilation blower (counter-rotary local fan), Germany VORTEX is produced
" VTEX " series axis stream counter-rotary local fan.
The quo of local Fan for Mine in China includes 06-2 type, the third generation of first generation BY type (70B2), the second generation for another example
62A14-11 and 2K60 type, wherein YBT type be representative common axial ventilator energy consumption is high, noise be put into greatly it is superseded
Catalogue.Successful JFD-5 convection rotary type axis stream local ventilation is studied from Metallurgical Industry Institute Of Security Technology at the end of the sixties
After machine, China is had now been developed from 2 × 2.2 to 2 × 90kW series counter-rotary local fan product, is opened from middle nineteen nineties
Beginning, each coal mine largely used at home, possesses Wind Volume, high wind pressure and efficient feature and is received by the market.But
There are more problems, motor often occur and are burned out, cause to listen wind accident and the safety in production that seriously affects coal mine, especially
The shortcomings that counter-rotary local fan highly energy-consuming and high cost, causes booster used in national coal mine at present 300,000
In platform or so, the common axial ventilator of YBT type and counter-rotary local fan about respectively account for half, quo of local Fan for Mine
Comprehensive substitute products are extremely urgent.
Summary of the invention
The first purpose of the invention is to provide a kind of high-speed and energy-savings that can substitute Counter Rotating Axial Local Fan
Single-stage mine local fan.
A second object of the present invention is to provide a kind of high wind pressure Wind Volume high-speed and energy-saving single-stage mine local fans.
Third object of the present invention is to provide a kind of methods for preparing high wind pressure large flow single-stage mine local fan.
In order to realize first purpose, the present invention provides a kind of high-speed and energy-saving single-stage mine local fans, including air duct, wherein
Air inlet is pressed in air duct to direction of air outlet, pilot blade, impeller, rear guide vane is successively provided with (according to actual processing demand), spy
Not, it is emphasized that impeller of the invention by single-stage motor driven rather than twin-stage motor driven；The present invention is to existing mine ventilator
Larger change be to be provided with to mention frequency module outside air duct；
The first aspect to require emphasis is that unique single-stage motor, and single-stage motor speed V is arranged in every mine local fan
It is the bearing of single-stage motor installation is 4 grades of bearings or 6 grades of bearings for 4000-6000rpm；
The frequency module that mentions of the invention can be understood as a kind of frequency converter, can be turned by mentioning frequency module with adjustment motor
Speed, and mention frequency module output frequency and can be much higher than distribution system rated frequency (50/60Hz), and mention frequency module mentions frequency
Range delta H meets following formula:
Δ H=H-H0=V*P/60-H0P is motor number of pole-pairs, and V is motor speed；
The second aspect to require emphasis is that unique impeller is only arranged in every mine local fan of the invention, and the impeller is at least
Have one of following three kinds of performances or a variety of: 200-960 σb/ MPa, yield strength are 165-445 σp0.2/MPa；Elongation
7-40σ5/ %.
In order to further disclose high-speed and energy-saving single-stage mine local fan of the invention, below component and its connection relationship can help
The design of those skilled in the art according to the present invention is helped a kind of high-speed and energy-saving single-stage mine local fan is made, but these are open not
It is construed as the limitation to high-speed and energy-saving single-stage mine local fan structure of the invention, disclosed first part's structure are as follows: air duct
Air inlet side be equipped with air inlet cylinder, air inlet cylinder passes through hush pipe and air duct flanged joint；The air opening end of air duct disappears equipped with diffusion
Sound cylinder, diffusion hush pipe and air duct flanged joint；The close rear guide vane air side that is arranged in air duct is bored in diffusion noise reduction, vertebra point to
Extend in diffusion hush pipe；
Disclosed second part structure are as follows: single-stage motor further includes shaft, drive end bearing bracket, winding coil, stator core, machine
Seat, rotor core, rear end cap, be arranged in single-stage motor outer wall circumferential direction radiating ribs, bearing includes fore bearing and rear bearing.It is excellent
Choosing is that fore bearing and rear bearing are 6311 bearings.
In order to further realize the first purpose of this invention, currently preferred impeller is aluminum alloy impeller, and tension is strong
Spend 270 σb/ MPa, yield strength are 210 σp0.2/MPa；7.9 σ of elongation5The aluminum alloy impeller of/%.
In order to further realize the first purpose of this invention, single-stage motor diameter of the invention is no more than 500mm, single-stage
The bearing of motor is 4 grades of bearings or 6 grades of bearings, most preferably 6 grades of bearings.
To of the invention mentioning, frequency module is further preferred, and the preferred currently preferred frequency range that mentions is 83-150HZ below,
For example work as H0When for 50HZ, P=2, single-stage motor speed V being 4000-6000rpm, mentions frequency module and export and be to the frequency of impeller
133-200HZ.The frequency module that mentions of the invention is generally divided into 4 parts: rectification unit, high capacity capacitor, inverter and controller, choosing
From but be not limited to sinusoidal pulse width modulation (SPWM) control mode, space vector of voltage (SVPWM) control mode, vector controlled
(VC) mode, Direct Torque Control (DTC) mode, matrix form hand over-hand over control mode.
Become it should be pointed out that mine local fan of the invention can also be also comprised for the variable speed of variable speed control
Frequency device, the frequency range of the frequency converter are 0-200Hz, preferably 0-150Hz, it is further preferred that 0-83Hz.This hair
Bright inventive concept is that will mention frequency module (2) and variable speed frequency converter is integrally disposed, and specific set-up mode is selected from known
Electrical engineering technology.
In addition, single-stage mine local fan of the invention is electrical equipment, other yuan of device such as corresponding controller will necessarily be related to
Part, those skilled in the art's record according to the present invention can select suitable circuit arrangement mode and component in the prior art
Connection type, these reasonable selections are within design of the invention.
The rated operation point total pressure range of term " high wind pressure " of the invention, type shown in present patent application is
5000-6200Pa, the wind pressure can meet mine wind pressure demand, especially also meet ventilation pressure during tunnelling
The demand changed with ventilation distance length.
The range of term " big flow " of the invention, the rated operation point of type shown in present patent application is air quantity:
30000-36000m3/ h, the flow can meet mine air flow rate demand, especially also meet during tunnelling,
It is required that air quantity it is opposite be certain demand.
The definition of term " static pressure " of the invention is: the pressure that gas acts on the body surface for being parallel to air-flow.It is popular
Say: static pressure refers to the pressure for overcoming the resistance of ducting.
The definition of term " dynamic pressure " of the invention is: gas flow in required kinetic energy be converted to the form of pressure.It is popular
Say: dynamic pressure is to drive the pressure that travels forward of gas.
The calculation of term " total pressure " of the invention is: total pressure=static pressure+dynamic pressure.
In order to realize second purpose, the present invention also provides a kind of high wind pressure large flow single-stage mine local fans, including wind
Cylinder wherein presses air inlet to direction of air outlet in air duct, be successively provided with (according to actual processing demand) pilot blade, impeller, after
Guide vane, special emphasis be, impeller of the invention by single-stage motor driven rather than twin-stage motor driven；The present invention is to existing mine
It is to be provided with to mention frequency module outside air duct with the larger change of blower；
The output frequency for mentioning frequency module is greater than distribution system rated frequency H0, and mention the model for mentioning frequency range delta H of frequency module
It encloses for 16.7-150Hz.
The first aspect to require emphasis is that unique single-stage motor is arranged in every mine local fan, and the bearing of single-stage motor is 4 grades
Bearing or 6 grades of bearings, single-stage motor speed V are to be arranged as follows:
V=(H0+ΔH)×60/P；
The second aspect to require emphasis is that unique impeller is arranged in every mine local fan, and impeller at least has following three kinds of property
One of energy is a variety of: tensile strength is 200-960 σb/ MPa, yield strength are 165-445 σp0.2/MPa；Elongation 7-40
σ5/ %.
In order to realize second purpose, the present invention also provides a kind of sides for preparing high wind pressure large flow single-stage mine local fan
Method includes the following steps:
S1: taking impeller, which at least has one of following three kinds of performances or a variety of: tensile strength 200-960
σb/ MPa, yield strength are 165-445 σp0.2/MPa；Elongation 7-40 σ5/ %；
S2: taking air duct, by air inlet to direction of air outlet, sets gradually pilot blade, impeller, rear guide vane, wherein impeller by
Single-stage motor driven, and unique impeller is arranged in every mine local fan；
S3: setting mentions frequency module outside air duct, and the output frequency for mentioning frequency module is set greater than the specified frequency of distribution system
Rate H0, and the frequency range delta H that mentions for mentioning frequency module meets following formula:
Δ H=V*P/60-H0；
S4: high wind pressure large flow single-stage mine local fan is obtained, in which: specified work described in type shown in present patent application
The range for making point is air quantity: 30000-36000m3/ h, rated operation point total pressure range are 5000-6200Pa；
The beneficial effects of the present invention are:
1. using the integrated compact design of single-stage motor, and creative giving mentions frequency module, single-stage motor
The core components such as corresponding bearing, particular impeller, to solve above-mentioned high revolving speed bring technology barrier, and then provide a kind of substitution
The high-speed and energy-saving single-stage mine local fan of rotating axis stream booster, the social benefit with significant energy-saving and emission-reduction.
2. mine local fan motor of the invention is promoted to 4000-6000rpm by 3000rpm, coordination solves shell resonance frequency
Rate, the intensity of shell, bearing is born and balanced capacity, the performance of impeller.
3. high-speed and energy-saving single-stage mine local fan substantially reduces volume compared to twin-stage to rotation, structure simplifies, and weight significantly subtracts
Gently, facilitate user to use in underground, break through conventional motor (3000r/min) double stage tandem (including but not for mine local fan field
Be limited to) limitation a kind of initiative solution is provided, and significantly improve mine local fan working efficiency, energy conservation and environmental protection.
4. frequency modulation speed can be proposed under different high static pressure working condition requirements using frequency module is mentioned, agree with applying working condition, energy conservation drop
It makes an uproar.
Detailed description of the invention
Fig. 1 is the high-speed and energy-saving single-stage mine local fan structural schematic diagram of embodiment 1；
Fig. 2 is the single-stage motor schematic cross-sectional view of embodiment 2；
Fig. 3 is the single-stage motor side schematic view of embodiment 2；
Fig. 4 is the high-speed and energy-saving single-stage mine local fan structural schematic diagram of embodiment 4；
Component names and number in figure are as follows: 1- air duct, 2- mention frequency module, 3- single-stage motor, 4- impeller, 5- pilot blade, 6-
Rear guide vane, 7- enter the wind cylinder, 8- diffusion hush pipe, 9- diffusion noise reduction cone, 10- hush pipe, 11- shaft, 12- drive end bearing bracket, 13- winding
Coil, 14- stator core, 15- base, 16- rotor core, 17- rear end cap, 18- fore bearing, 19- rear bearing.
Specific embodiment
Embodiment 1
The high-speed and energy-saving single-stage mine local fan of embodiment 1 presses air inlet to out as shown in Figure 1, including air duct 1 in air duct 1
Air port direction, is disposed with pilot blade 5, unique aluminum alloy impeller 4, rear guide vane 6, and impeller 4 is driven by unique single-stage motor 3
It is dynamic；It is provided with outside air duct 1 and mentions frequency module 2；The air inlet side of air duct 1 is equipped with air inlet cylinder 7, and air inlet cylinder 7 passes through hush pipe 10 and wind
The flanged joint of cylinder 1；The air opening end of air duct 1 is equipped with diffusion hush pipe 8, diffusion hush pipe 8) and 1 flanged joint of air duct；Diffusion
Close 6 air side of rear guide vane in air duct 1 is arranged in noise reduction cone 9, and vertebra point extends into diffusion hush pipe 8, and the present invention adopts
Acoustic damping materials are mineral wool.
3 revolving speed V of single-stage motor is 4000-6000rpm, and used bearing is 6 grades of bearings；
In the present embodiment, with distribution system rated frequency H0For=50HZ, the output frequency for mentioning frequency module 2 is greater than distribution
System nominal frequency H0, and the frequency range delta H that mentions for mentioning frequency module meets following formula:
Δ H=V*P/60-H0；
The material of the impeller of the present embodiment is nickel-base alloy, and production technical standard: GB/T14992, GB/T14995 are upper
Haikang Sheng Hangcai Science and Technology Co., Ltd. provides, and tensile strength is 800 σb/ MPa, yield strength are 420 σp0.2/ MPa, elongation
25 σ of rate5The aluminum alloy impeller of/%.
Simple fan revolving speed is up to 3000r/s at present, and flow is low, wind pressure is high, and when application can only be fanned with gentle breeze, this
Embodiment reaches single stage fan 4000-6000r/s by changing impeller material, blower fan structure etc., enables the single stage fan very
Good is applied to Local Ventilation Equipment in Coal Mine, greatly reduces cost, has saved the energy.
2 preparation method of embodiment
Embodiment 2 is the method for preparing high wind pressure large flow single-stage mine local fan, is included the following steps:
S1: taking impeller 4, and the impeller 4 at least has one of following three kinds of performances or a variety of: tensile strength 200-
960σb/ MPa, yield strength are 165-445 σp0.2/MPa；Elongation 7-40 σ5/ %；
S2: taking air duct 1, by air inlet to direction of air outlet, sets gradually pilot blade 5, impeller 4, rear guide vane 6, middle period
Wheel 4 is driven by single-stage motor 3, and unique impeller 4 is arranged in every mine local fan；
S3: setting mentions frequency module 2 outside air duct 1, and the output frequency for mentioning frequency module 2 is set greater than distribution system
Rated frequency H0, and the frequency range delta H that mentions for mentioning frequency module meets following formula:
Δ H=V*P/60-H0；
S4: high wind pressure large flow single-stage mine local fan is obtained, in which: specified work described in type shown in present patent application
The range for making point is air quantity: 30000-36000m3/ h, rated operation point total pressure range are 5000-6200Pa；
Embodiment 3
The difference of embodiment 3 and embodiment 1 is that the pilot blade of embodiment 1 is substituted for pod.
Embodiment 4
As shown in Fig. 2, embodiment 4 is on the basis of embodiment 1, to continue to disclose a kind of list used for the present invention
Grade motor, the single-stage motor 3 include shaft 11, drive end bearing bracket 12, winding coil 13, stator core 14, base 15, rotor core
16, rear end cap 17, middle (center) bearing include fore bearing 18 and rear bearing 19, are 6311 bearings, as shown in connection with fig. 3, single-stage motor 3
Outer wall circumferentially setting radiating ribs 20, the single-stage motor diameter be 500mm.
Embodiment 5
The present embodiment is substantially the same manner as Example 1, except that impeller, which uses Baoji and irrigates titanium and manufacture, to be had
The TA6 titanium alloy of limit company production.
Embodiment 6
The motor maximum speed as used in the mine local fan of current industry universal is the limitation of 2 pole 3000r/min,
The design strength of current the impeller of general mine local fan is only capable of being applicable in the working condition of 3000r/min simultaneously, therefore, at present
To meet the higher applicable requirement of static pressure requirement, necessary requirement can only can be only achieved to rotation using sencond stage impeller series connection.Cause to tie
Structure is complicated, volume is big, operational efficiency is low, while also resulting in control difficulty and increasing.As shown in connection with fig. 4, the present embodiment solves
The above problem, the present embodiment setting is upper substantially the same manner as Example 1, except that mention frequency module, this mention frequency module with it is stepless
Speed changing, frequency converting device is set as a functional unit, on the one hand can be by Δ H=V*P/60-H0Frequency is turned up, is on the one hand alternatively arranged as
For the variable speed frequency converter of variable speed control, i.e. H0When=50HZ, the frequency range of variable speed frequency converter is 0-
50Hz, the output frequency after being proposed the height-regulating of frequency module 2 is in 50-100Hz.
It is that impeller, the technical parameter of impeller are as shown in table 1 in place of the main difference of embodiment 7-15 and embodiment 1.
Table 1 implements the list of 7-15 technical parameter
| Tensile strength | Yield strength | Elongation | Bearing | |
| Embodiment 7 | 220 | 180 | 7.2 | 4 grades |
| Embodiment 8 | 300 | 220 | 8 | 4 grades |
| Embodiment 9 | 600 | 280 | 23 | 4 grades |
| Embodiment 10 | 720 | 320 | 30 | 4 grades |
| Embodiment 11 | 880 | 390 | 35 | 4 grades |
| Embodiment 12 | 960 | 445 | 40 | 6 grades |
| Embodiment 13 | 780 | 360 | 32 | 6 grades |
| Embodiment 14 | 250 | 195 | 7.8 | 6 grades |
| Embodiment 15 | 270 | 210 | 7.9 | 6 grades |
Reference examples 1
Reference examples: FBD serial fan Zhejiang Ju Feng ventilation equipment Co., Ltd, major parameter are shown in Table 2:
2 reference examples of table, 1 blower important technological parameters
| Machine number | Power of motor kw | Air quantity m3/min | Total pressure Pa | Than A sound level dB (A) |
| №6.3/60 | 2×30 | 595-360 | 900-6150 | ≤25 |
Reference examples 2-10
Be impeller in place of the main difference of reference examples 2-10 and embodiment 1, impeller as shown in table 3.
3 reference examples 2-10 technical parameter list of table
| Tensile strength | Yield strength | Elongation | Bearing | |
| Reference examples 2 | 500 | 205 | 28 | 4 grades |
| Reference examples 3 | 560 | 250 | 30 | 6 grades |
| Reference examples 4 | 580 | 270 | 35 | 6 grades |
| Reference examples 5 | 140 | 122 | 5 | 4 grades |
| Reference examples 6 | 155 | 135 | 6 | 4 grades |
| Reference examples 7 | 185 | 166 | 6 | 4 grades |
| Reference examples 8 | 260 | 220 | 7 | 6 grades |
| Reference examples 9 | 530 | 285 | 29 | 6 grades |
| Reference examples 10 | 650 | 330 | 5 | 6 grades |
The performance comparison test of 1 single-stage mine local fan of test example
Test method: Example 5,7-15 take reference examples 2-10 as a control group, with single-stage mine as experimental group respectively
Flow (m is selected with the performance indicator of portable blower3/ min), total pressure (pa), total pressure efficiency (%), highest destroy revolving speed (r/min), whole
Machine weight (kg), welding procedure, moulding process, casting technique.Test result is as shown in table 4,
The revolving speed of 4 single-stage mine local fan performance test list varying strength material of table tolerance
Test result: (1) in order to realize the present invention, the selection of impeller material is one of central factor, in the process of experiment
In, it has been found that influence experiment whether successful factor, the never only yield strength, tensile strength and material of material itself
The specific gravity of material, the process industrial art performance of material itself can seriously affect experiment as a result, weldering including high-strength alloy steel
Connect performance and moulding process, the casting technique of aluminum alloy materials and the casting flaw accordingly generated, nickel-base alloy and titanium-based
The welding performance of alloy, the processing performance feature of all above different materials all will affect the manufacture of high-volume industry from now on
Therefore which kind of material is product uniformity select, it is necessary to from the realization of properties of product, the unification of production technology and stability and
Durability etc. after the product supply of material comprehensively considers；(2) there were significant differences by embodiment 15 and control group 2-10, and embodiment
14,15 have significant difference with embodiment 7-10；(3) same class material, yield strength and destruction maximum speed are shown centainly
Positive correlation, but the operational characteristic of material itself will affect experimental result.
The economize on electricity of test example 2 is compared
Test objective: mine local ventilator's usage quantity is more, continuously runs throughout the year, and power consumption accounts for shaft production electricity consumption
30% or more.With the appearance of highly efficient and productive working face, excavation develops towards big cross section, over long distances, it is desirable that ventilation
Machine power is increasing, and reliability is higher and higher.
Test method: the design (embodiment 4) use≤40KW blower replaces 2*22KW blower；≤ 55KW blower replaces 2*
30KW blower (see reference examples 1)；Amount of energy saving >=10%.It is more than 100,000 calculating by national online operation twin-stage counter-rotating fan, puts down
Equal installed power >=44KW, total installed capacity power >=4.4*106KW, annual runing time estimate that 20*300h, total power consumption are
4.4*106* 20*300KWh=2.64*1010KWh/.
Test result: 1 product of reference examples is replaced with the design product (embodiment 15), saves electric energy 2.64*1010KWh*
10%=2.64*109KWh/.
Test example 3 is saved steel and is compared
Test objective: mine local ventilator's usage quantity is more, and it is more to expend steel.
Test method: (efficiency when operation compared with sencond stage impeller series connection is to rotation portable blower (blower weight is about 900 kilograms)
Calculated by 70%), existing two motors are merged into 1 motor by the design (embodiment 15), and diameter is by 630 (1.26 π
Multiplied by 500 (0.79 π) (due to speed height) 2) have been changed to, this product is at 400 kilograms or less.
Test result: the steel more than former Fit Models half are saved for quo of local Fan for Mine application field.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the scope of the present invention into
Row limits, and without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements out, should fall within the scope of protection determined by the claims of the present invention.
Claims (10)
1. a kind of high-speed and energy-saving single-stage mine local fan, including air duct (1), it is characterised in that: press air inlet extremely in the air duct (1)
Direction of air outlet, is disposed with impeller (4), rear guide vane (6), and the impeller (4) is driven by single-stage motor (3)；The air duct
(1) it is provided with outside and mentions frequency module (2)；
Unique single-stage motor (3) is arranged in every mine local fan, and single-stage motor (3) the revolving speed V is 4000-
6000rpm, the bearing of the single-stage motor (3) are 4 grades of bearings or 6 grades of bearings；
The output frequency for mentioning frequency module (2) is greater than distribution system rated frequency H0, and the frequency range delta H that mentions for mentioning frequency module expires
The following formula of foot, wherein P is motor number of pole-pairs:
Δ H=V*P/60-H0；
Unique impeller (4) is arranged in every mine local fan, and the impeller (4) at least has one in following three kinds of performances
Kind is a variety of: tensile strength is 200-960 σb/ MPa, yield strength are 165-445 σp0.2/MPa；Elongation 7-40 σ5/ %.
2. high-speed and energy-saving single-stage mine local fan according to claim 1, it is characterised in that: the interior air inlet of the air duct (1)
Place is additionally provided with pilot blade (5)；The air inlet side of the air duct (1) is equipped with air inlet cylinder (7), and the air inlet cylinder (7) passes through noise reduction
Cylinder (10) and the air duct (1) flanged joint；The air opening end of the air duct (1) is equipped with diffusion hush pipe (8), and the diffusion disappears
Sound cylinder (8) and the air duct (1) flanged joint；The close rear guide vane that (9) are arranged in the air duct (1) is bored in diffusion noise reduction
(6) air side, vertebra point extend into the diffusion hush pipe (8).
3. high-speed and energy-saving single-stage mine local fan according to claim 2, it is characterised in that: the single-stage motor (3) is also wrapped
Include shaft (11), drive end bearing bracket (12), winding coil (13), stator core (14), base (15), rotor core (16), rear end cap
(17), the bearing includes fore bearing (18) and rear bearing (19)；Preferably, the fore bearing (18) and rear bearing (19) are equal
For 6311 bearings；It may further be preferable that circumferentially setting radiating ribs (20) of the outer wall of the single-stage motor (3).
4. high-speed and energy-saving single-stage mine local fan according to claim 1, it is characterised in that: the impeller (4) is high intensity
Steel alloy, aluminium alloy, nickel-base alloy or titanium-base alloy impeller.
5. high-speed and energy-saving single-stage mine local fan according to claim 4, it is characterised in that: the impeller (4) is aluminium alloy
Impeller, the tensile strength of the impeller (4) are 270 σb/ MPa, yield strength are 210 σp0.2/ MPa, 7.9 σ of elongation5The aluminium of/%
Alloy impeller.
6. high-speed and energy-saving single-stage mine local fan according to claim 1, it is characterised in that: the single-stage motor diameter does not surpass
500mm is crossed, the single-stage motor speed is 4000-6000rpm, and the bearing of the single-stage motor is 4-6 grades of bearings.
7. high-speed and energy-saving single-stage mine local fan according to claim 1, it is characterised in that: the Δ H is 16.7-150HZ.
8. high-speed and energy-saving single-stage mine local fan according to claim 1, it is characterised in that: the mine local fan further includes using
In the variable speed frequency converter of variable speed control, the frequency range of the variable speed frequency converter is 0-200Hz；Preferably
It is, it is described to mention frequency module (2) and the frequency converter is set as a functional unit.
9. a kind of high wind pressure large flow single-stage mine local fan, including air duct (1), which is characterized in that the model of the rated operation point
It encloses for air quantity: 30000-36000m3/ h, rated operation point total pressure range are 5000-6200Pa；By air inlet in the air duct (1)
Mouth is disposed with pilot blade (5), impeller (4), rear guide vane (6), the impeller (4) is by single-stage motor (3) to direction of air outlet
Driving；It is provided with outside the air duct (1) and mentions frequency module (2)；
The output frequency for mentioning frequency module is greater than distribution system rated frequency H0, and propose the range for mentioning frequency range delta H of frequency module
For 16.7-150Hz
Unique single-stage motor is arranged in every mine local fan, and the bearing of the single-stage motor is 4 grades of bearings or 6 grades of axis
It holds, the single-stage motor speed V is to be arranged as follows, and wherein P is motor number of pole-pairs:
V=(H0+ΔH)×60/P；
Unique impeller is arranged in every mine local fan, and the impeller at least has one of following three kinds of performances or more
Kind: tensile strength is 200-960 σb/ MPa, yield strength are 165-445 σp0.2/MPa；Elongation 7-40 σ5/ %.
10. a kind of method for preparing high wind pressure large flow single-stage mine local fan, which comprises the steps of:
S1: taking impeller (4), and the impeller (4) at least has one of following three kinds of performances or a variety of: 200-960 σb/MPa、
Yield strength is 165-445 σp0.2/MPa；Elongation 7-40 σ5/ %；
S2: taking air duct (1), by air inlet to direction of air outlet, sets gradually pilot blade (5), impeller (4), rear guide vane (6),
Middle impeller (4) is driven by single-stage motor (3), and unique impeller (4) is arranged in every mine local fan；
S3: being arranged outside in air duct (1) and mention frequency module (2), and the output frequency for mentioning frequency module (2) is set greater than power distribution system
Unite rated frequency H0, and the frequency range delta H that mentions for mentioning frequency module meets following formula, wherein P is motor number of pole-pairs:
Δ H=V*P/60-H0；
S4: high wind pressure large flow single-stage mine local fan is obtained, in which: rated operation point described in type shown in present patent application
Range be air quantity: 30000-36000m3/ h, rated operation point total pressure range are 5000-6200Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037910.1A CN109139510A (en) | 2018-09-06 | 2018-09-06 | High-speed and energy-saving single-stage mine local fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037910.1A CN109139510A (en) | 2018-09-06 | 2018-09-06 | High-speed and energy-saving single-stage mine local fan |
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| Publication Number | Publication Date |
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| CN109139510A true CN109139510A (en) | 2019-01-04 |
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ID=64827406
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|---|---|---|---|
| CN201811037910.1A Pending CN109139510A (en) | 2018-09-06 | 2018-09-06 | High-speed and energy-saving single-stage mine local fan |
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| CN (1) | CN109139510A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115289035A (en) * | 2022-08-19 | 2022-11-04 | 烟台东德实业有限公司 | Axial-flow type air intake and exhaust method of hydrogen circulating pump |
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| CN115289035A (en) * | 2022-08-19 | 2022-11-04 | 烟台东德实业有限公司 | Axial-flow type air intake and exhaust method of hydrogen circulating pump |
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