CN2414227Y - High-efficiency and high-pressure mixed type blower fan specially for tunnel ventialtion - Google Patents
High-efficiency and high-pressure mixed type blower fan specially for tunnel ventialtion Download PDFInfo
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- CN2414227Y CN2414227Y CN 00224424 CN00224424U CN2414227Y CN 2414227 Y CN2414227 Y CN 2414227Y CN 00224424 CN00224424 CN 00224424 CN 00224424 U CN00224424 U CN 00224424U CN 2414227 Y CN2414227 Y CN 2414227Y
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Abstract
The utility model relates to a high-efficiency and high-pressure mixed type blower fan specially for tunnel ventilation, which is composed of a prepressurization section, an airflow regulating section, a radial flow type main pressurization section, and an expansion accelerating section, wherein, the prepressurization section comprises a front flow guiding cone, an axial flow type rotor, an outer shell, and a front support; the airflow regulating section comprises an inner ring, a stator vane group, a rockerarm, a connecting ring and an outer shell; the radial flow type main pressurization section comprises an air guiding wheel, a radial flow type pressurization rotor, an outer shell, and an outlet flow guiding stator; the expansion accelerating section comprises an inner and an outer shell bodies, a streamlined strut, a back flow guiding cone, a motor, etc. The utility model has the advantages of reasonable design, complete function, automatic and adjustable operation, and favorable performance.
Description
The utility model relates to a kind of ventilation equipment, is specifically related to the hybrid tunnel ventilation special fan based on runoff of a kind of efficient high-pressure.
More original tunnel ventilation blower fans adopt axial-flow blower and jet blower, there are not pre-supercharging, gas flow modulation, main supercharging and expansion accelerating structure, blast and wind speed are low, there is not automatic regulatory function, ventilation effect is poor, and power consumption is big, can not effectively solve the environmental protection of existing tunnel ventilation system, energy-conservation and fire-fighting matching problem.
The purpose of the utility model aims to provide a kind of blast and wind speed height, can carry out automatic control and adjustment, low in energy consumption, ventilation effect good, effectively solve the environmental protection of tunnel ventilation system, energy-conservation and fire-fighting matching problem, the hybrid tunnel ventilation special fan of efficient high-pressure rational in infrastructure, function admirable.
Technical solution of the present utility model is: the hybrid tunnel ventilation special fan of this efficient high-pressure is by pre-supercharging section, the gas flow modulation section, radial-flow type master supercharging section, these four elementary cells of expansion accelerating sections constitute, pre-supercharging section comprises preceding flow deflecting cone, axial-flow rotor, pre-supercharging section shell, preceding supporting, the wheel disc of preceding flow deflecting cone and axial-flow rotor is connected and fixed, axial-flow rotor is made of integrated dish axle and blade, preceding supporting is by supporting base and roller bearing, centripetal ball bearing, back-up ring, the axially locating nut is formed, axial-flow rotor, preceding supporting is installed in the pre-supercharging section shell; The gas flow modulation section comprises shell, interior ring, stator blade group; the rocking arm and the ring that links; the stator blade group is divided into fixed stator blade and adjustable stator blade again; fixed stator blade is installed in shell leading portion internal surface groove; its rotatingshaft of adjustable stator blade is installed in outer casing back; interior ring constitutes a unified rigid structure by fixed stator blade and shell; rocking arm is same group of motion control mechanism with the ring that links; the bearing pin of interlock ring slides in the end slot before rocking arm; square hole connection in rocking arm rear end also drives adjustable stator blade rotation; the interlock ring is a track with the limit dais of shell, moves by step motor control; Radial-flow type master supercharging section comprises inducer, radial-flow type supercharging rotor, main supercharging section shell, outlet water conservancy diversion stator, inducer by blade, wheel disc, leading edge obturage the ring and splined shaft constitute, radial-flow type supercharging rotor has blade, wheel disc and axle journal, inducer is installed in the gas flow modulation section shell, radial-flow type supercharging rotor and outlet water conservancy diversion stator then are installed in the main supercharging section shell, main supercharging section shell is the S shape, the transverse section section curve of outlet water conservancy diversion stator blade is an Archimedes spiral, and longitudinal plane section curve is a straight line; The expansion accelerating sections comprises inner housing, frame, streamline strut, back flow deflecting cone, motor and motor supports, the inner housing outer surface is a section of air-flow acceleration channel inwall, the terminal assembling of inner housing embeds the front end of back flow deflecting cone, motor is installed in the back flow deflecting cone, frame becomes 120 ° of equally distributed streamline struts to link to each other with inner housing by three, pillar adopts hollow structure, can pass through circuit in the post, oil circuit and motor supports, expansion accelerating sections frame, main supercharging section shell, gas flow modulation section shell, pre-supercharging section shell passes through flange plate separately successively, bolt is connected and fixed, rotor, radial-flow type supercharging rotor, be linked to be a flexible shaft with two shaft couplings between three sections of the axial-flow rotors.
The utility model is compared with prior art, owing to adopted the design of unique pre-supercharging section, gas flow modulation section, radial-flow type master supercharging section, four elementary cells of expansion accelerating sections, thereby wind pressure and wind speed is big, and can control adjustable automatically, low in energy consumption, ventilation effect is good, effectively solves the environmental protection of tunnel ventilation system, energy-conservation and fire-fighting matching problem.The utility model is skillfully constructed, reasonable in design, reliable operation, function admirable, for China's tunnel ventilation provides a kind of high-quality special fan.
Fig. 1 is the utility model structural representation;
Fig. 2 is pre-supercharging segment structure schematic representation;
Fig. 3 is preceding supporting base floor map;
Fig. 4 is a gas flow modulation segment structure schematic representation;
Fig. 5 is main supercharging segment structure schematic representation;
Fig. 6 is the inducer floor map;
Fig. 7 is a radial-flow type supercharging rotor plane schematic representation;
Fig. 8 is an expansion accelerating sections structural representation.
Below in conjunction with accompanying drawing, technical solutions of the utility model are described in further detail:
Referring to accompanying drawing, the hybrid tunnel ventilation special fan of this efficient high-pressure to the process of air work done is:
--flow to adjusting--the main supercharging of moving--expansion quickens the pre-supercharging of machinery
By this four big process, the general structure of blower fan also is made of four elementary cell sections, its general picture as shown in the figure:
Pre-supercharging Duan Youqian flow deflecting cone, axial-flow rotor, pre-supercharging section shell, preceding supporting constitute, and the gas flow modulation section is by shell, and fixed stator blade, interior ring, adjustable stator blade and rocking arm and interlock ring constitute.Radial-flow type master supercharging section is made of inducer, radial-flow type supercharging rotor, shell, outlet water conservancy diversion stator.The expansion accelerating sections is made of three streamlined interior hollow legs of inner housing, frame, back flow deflecting cone, motor and supporting element, 120 ° of distributions of one-tenth.
For not influencing aeroperformance and conserve space, motor places flow deflecting cone inside, back, and the rear portion of back flow deflecting cone can be thrown off backward so that maintenance of motor.
Blower fan axle system adopts tube strutbeam flexible shaft system, and three rotary components are connected by two shaft couplings, allow certain malalignment and exist.
Pre-supercharging section design proposal
Pre-supercharging section should by preceding flow deflecting cone, axial-flow rotor, frame, preceding supporting totally four parts constitute, specific design is as follows:
Preceding flow deflecting cone 1:
Because of the cone front end not to the parts of air work done, can not consider the influence of natural wind to general ventilation in addition, so can not make Pneumatic Calculation to preceding flow deflecting cone, the cone curved surface can adopt the parabolic surface of revolution.Cutting circular diameter equates with the axial-flow rotor hub diameter.
Cone is connected the employing screw rod and connects with the wheel disc of axial-flow rotor, for keeping coaxality preferably, to coaxality strict and clear and definite requirement should be arranged when the central screw of spoke dish designs, the axle sleeve structure of guide on the cone bonnet and cone front end also should have higher coaxality requirement.
For ease of processing and guarantee the validity requirement of shape and structure, cone should adopt the corrosion resistant plate impact briquetting.
Pre-supercharging axial-flow rotor 2
Pre-supercharging axial-flow rotor is made of integrated dish axle and blade, with the favorable mechanical exercise performance, also is simultaneously convenient for maintaining and reduction maintenance expenses for easy to assembly, and blade adopts integrated casting processing with the dish axle.
The flow pattern curve of rotor disk wheel hub external diameter, blade height, blade determines that by Pneumatic Calculation its independent variable is:
Power of motor
Motor speed
Per second air exchange amount (flow)
Pre-supercharging section shell 3
Pre-supercharging section shell adopts the aluminium alloy casting moulding, and its leading edge inner side surface is designed to arc transition, and one of trailing edge cutting is long be L, be that the ladder of X opens groove for preceding supporting base installation usefulness, six positioning spiro pits of the trapezoidal spacious uniform processing of groove section axisymmetric isogonism deeply.The shell front and rear edge is flange plate structure, and trailing edge is connected with gas flow modulation section shell with bolt.
Preceding supporting 4
Before supporting form by supporting base and roller bearing, centripetal ball bearing, back-up ring, axially locating nut.
Supporting base adopts the aluminum alloy integral casting forming, and its outer ring outer surface and interior ring inner surface adopt turning processing, and be accurate to guarantee the supporting base installing and locating.Pre-supercharging section positioning screw hole is joined brill.Size and tolerance after the interior ring inner surface processing are as the criterion as drive fit with selected outer race.
Roller bearing, centripetal ball bearing are all selected for use and are met international standard piece.
Four disjunctor pillars of design between the supporting base inner and outer rings.Pillar is a hollow structure, and its effect one is for weight reduction, and two provide passage for lubricant pipe.
Gas flow modulation section design proposal
The effect of gas flow modulation section is the inlet air flow that the reasonable flow velocity and the flow direction are provided for radial-flow type supercharging rotor.Its constituent element has shell, interior ring, fixed stator blade, adjustable stator blade, rocking arm, and the interlock ring is formed, and specific design is as follows:
When designs fix formula stator blade, its angle of attack should be consistent with the flow outlet direction of pre-supercharging axial-flow rotor, progressively turns to then and parallel axes; It is spacing in 75%-100% peak rate of flow corresponding angles it should to be prolonged the angle when designing adjustable stator blade 6, and the 100% flow Yan Jiao then angle of attack with radially main supercharging rotor is identical.
Shell 7
Shell requires to be designed to cylindrical shape, and flange plate structure is adopted in the rear and front end, is connected with pre-supercharging section shell and radial-flow type master supercharging section shell bolt respectively.Shell front end internal surface fluting is with the fixed stator blade of convenient dress people.Even cloth hole, rear end is to install rotatingshaft on the adjustable stator blade.The shell middle part is designed to a cascade ring platform, as the position-limited rail of regulation and control interlock ring.
Fixed stator blade is packed into behind the shell, is bumped into a limited ring with fixing stator blade group at shell front end internal surface.
Interior ring constitutes a unified rigid structure by fixed stator blade and shell, adopts welding manner to fix between the two.The wear-resisting cure process of hole surface is also made in the back segment cloth hole of interior ring.In order to the following rotatingshaft of adjustable stator blade to be installed.
Rocking arm and interlock ring 9
Rocking arm is a same group of motion control mechanism with the interlock ring, and the front end fluting of rocking arm slides in groove in order to the bearing pin that holds the interlock ring; The rear end of rocking arm, opening square hole rotates in order to connect adjustable stator blade and to drive it.
The interlock ring is a track with the limit dais of shell, moves by step motor control.Interlock ring and limit dais Spielpassung link ring outer surface fixed pin shaft and rocking arm movingly, and the slip of bearing pin in the rocking arm sliding-groove just caused the Yan Jiao of adjustable stator blade to adjust.
Radial-flow type master supercharging section design proposal
Radial-flow type master supercharging section is made of four major parts such as inducer, radial-flow type supercharging rotor, shell, outlet water conservancy diversion stators, and specific design is as follows:
Inducer 10
The effect one of inducer is to carrying out mechanical work done for a long time through pre-supercharging and air-flow with certain speed; The 2nd, the air-flow after twice supercharging is imported radial-flow type supercharging rotor smoothly.Inducer by blade, wheel disc, leading edge obturage the ring and several parts of splined shaft constitute, adopt whole essence to cast type, the ring portion of wherein obturaging position processes with turning; Splined shaft position Milling Process.Remaining part no longer carries out cold machining processing.
The leg-of-mutton calculated with mathematical model of turbomachine inlet velocity draws in the strict aerodynamically of the preceding angle of attack of blade, and back Yan Jiao is parallel with axial direction.Then by certain circumferential inertia deviation ratio decision eccentric angle (diameter in eccentric garden).
Radial-flow type supercharging rotor 11
Radial-flow type supercharging rotor can be divided into blade, wheel disc and axle journal three parts by the position function, adopts whole essence to cast type, does grinding place except that the position that axle journal cooperates with bearing, and any cold machining machining all must not done in all the other positions.
Lobe numbers equates that with the inducer number its leading edge and inducer trailing edge should fit like a glove, the cylinder section line style axis of trailing edge and blower fan parallel axes.
Shell 12
The shell of radial-flow type master supercharging section is the S shape, and its meridian hatching is identical with the outer contour of runoff rotor blade, but certain clearance is arranged between the two, in case produce friction even collision between impeller and the shell.Whole casing is divided two halves casting up and down.
The front and rear edges of shell all adopts flange plate structure, is connected with gas flow modulation section shell with bolt.The two halves up and down of shell are also used with quadrat method and are connected.
Ladder surface of internal surface turning processing of shell back segment is in order to embed back outlet water conservancy diversion stator ring.
Outlet water conservancy diversion stator 13
Outlet water conservancy diversion stator act on will through the airflow smooth after the centrifugal motion supercharging direct into the expansion accelerating sections.Stator blade has reached the inside and outside ring of fixedly connected effect all with steel plate processing, is welded into a rigid unitary.
The transverse section section curve of blade is an Archimedes spiral, and longitudinal plane section curve is a straight line.
Expansion accelerating sections design proposal
The effect of expansion accelerating sections is to carry out expansion process gradually through the air-flow after mechanical work done supercharging and the centrifugal motion supercharging, and its speed is increased, and pressure reduces, and up to returning to normal atmosphere, finishes the driving process of whole air exchange.
The expansion accelerating sections is made of inner housing, frame, streamline strut, back flow deflecting cone and motor and motor supports, and specific design is as follows:
Inner housing 14
Inner housing steel plate drawing, outer surface are a section of air-flow acceleration channel inner arm, have identical degree of finish with adjacent section (back flow deflecting cone).The inner housing end is processed a ladder with turning, embeds the front end of back flow deflecting cone during assembling, connects into complete air-flow acceleration channel inwall with sunk screw with two sections then.
Frame adopts the round as a ball welding fabrication of steel plate, and front end adds weldering one flange plate, makes it to be connected with radial-flow type master supercharging section with bolt.Frame links to each other with inner housing by the streamline strut of three 120 ° uniform (by the steel plate welding fabrications).Be linked to be a rigid unitary with welding manner between the three.Pillar adopts hollow structure, can pass through circuit, oil circuit and motor supports 17 etc. in the post, and its profile is a streamline.
Back flow deflecting cone 16
The cross section curve of back flow deflecting cone is provided by Pneumatic Calculation, and cone adopts the round as a ball welding fabrication of steel plate.
Motor 18 is selected for use more than the 22KW, and below the 50KW, rated speed is the middle low power high-speed electric expreess locomotive more than 2930 rev/mins
Axle system adopts between three sections in the flexible shaft system, rotor, radial-flow type rotor, axial-flow rotor and is linked to be a flexible shaft with two shaft couplings.
The lubricated time switch valve (timing when only starting shooting) that adopts refuels to each supporting point in the gravity mode.
Claims (4)
1, the hybrid tunnel ventilation special fan of a kind of efficient high-pressure, it is characterized in that constituting by pre-supercharging section, gas flow modulation section, radial-flow type master supercharging section, these four elementary cells of expansion accelerating sections, pre-supercharging section comprises preceding flow deflecting cone, axial-flow rotor, pre-supercharging section shell, preceding supporting, the wheel disc of preceding flow deflecting cone and axial-flow rotor is connected and fixed, axial-flow rotor is made of integrated dish axle and blade, before supporting form by supporting base and roller bearing, centripetal ball bearing, back-up ring, axially locating nut, axial-flow rotor, preceding supporting are installed in the pre-supercharging section shell; The gas flow modulation section comprises shell, interior ring, stator blade group, rocking arm and interlock ring, the stator blade group is divided into fixed stator blade and adjustable stator blade again, fixed stator blade is installed in shell leading portion internal surface groove, its rotatingshaft of adjustable stator blade is installed in outer casing back, interior ring constitutes a unified rigid structure by fixed stator blade and shell; rocking arm is same group of motion control mechanism with the ring that links, and moves by step motor control; Radial-flow type master supercharging section comprises inducer, radial-flow type supercharging rotor, main supercharging section shell, outlet water conservancy diversion stator, inducer is by blade, wheel disc, leading edge is obturaged and is encircled and the splined shaft formation, radial-flow type supercharging rotor has blade, wheel disc and axle journal, inducer is installed in the gas flow modulation section shell, radial-flow type supercharging rotor and outlet water conservancy diversion stator then are installed in the main supercharging section shell, the expansion accelerating sections comprises inner housing, frame, streamline strut, back flow deflecting cone, motor and motor supports, the inner housing outer surface is a section of air-flow acceleration channel inwall, the terminal assembling of inner housing embeds the front end of back flow deflecting cone, and motor is installed in the back flow deflecting cone; Expansion accelerating sections frame, main supercharging section shell, gas flow modulation section shell, pre-supercharging section shell flange plate, the bolt by separately successively are connected and fixed, and are linked to be a flexible shaft with two shaft couplings between three sections of the rotors, radial-flow type rotor, axial-flow rotor.
2, the hybrid tunnel ventilation special fan of efficient high-pressure according to claim 1, the front end fluting that it is characterized in that rocking arm, the bearing pin of interlock ring slides in groove; the rear end opening square hole of rocking arm; connect and drive adjustable stator blade and rotate; the interlock ring is a track with the limit dais of shell, moves by step motor control.
3, the hybrid tunnel ventilation special fan of efficient high-pressure according to claim 1 is characterized in that main supercharging section shell is the S shape, and the transverse section section curve of outlet water conservancy diversion stator blade is an Archimedes spiral, and longitudinal plane section curve is a straight line.
4, the hybrid tunnel ventilation special fan of efficient high-pressure according to claim 1, the accelerating sections frame that it is characterized in that expanding becomes 120 ° of equally distributed streamline struts to link to each other with inner housing by three, pillar adopts hollow structure, can pass through circuit, oil circuit and motor supports in the post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00224424 CN2414227Y (en) | 2000-03-20 | 2000-03-20 | High-efficiency and high-pressure mixed type blower fan specially for tunnel ventialtion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00224424 CN2414227Y (en) | 2000-03-20 | 2000-03-20 | High-efficiency and high-pressure mixed type blower fan specially for tunnel ventialtion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2414227Y true CN2414227Y (en) | 2001-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00224424 Expired - Fee Related CN2414227Y (en) | 2000-03-20 | 2000-03-20 | High-efficiency and high-pressure mixed type blower fan specially for tunnel ventialtion |
Country Status (1)
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| CN (1) | CN2414227Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149149A (en) * | 2013-03-11 | 2013-06-12 | 北京矿冶研究总院 | High-temperature high-speed titanium fire-proof material characteristic test machine and test method |
| CN110206760A (en) * | 2019-06-18 | 2019-09-06 | 中国民用航空飞行学院 | A kind of adjustable stator blade mechanical device of servo motor driving |
| CN113898598A (en) * | 2021-08-19 | 2022-01-07 | 鑫磊压缩机股份有限公司 | Motor cylinder structure of magnetic suspension axial flow fan |
-
2000
- 2000-03-20 CN CN 00224424 patent/CN2414227Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149149A (en) * | 2013-03-11 | 2013-06-12 | 北京矿冶研究总院 | High-temperature high-speed titanium fire-proof material characteristic test machine and test method |
| CN110206760A (en) * | 2019-06-18 | 2019-09-06 | 中国民用航空飞行学院 | A kind of adjustable stator blade mechanical device of servo motor driving |
| CN113898598A (en) * | 2021-08-19 | 2022-01-07 | 鑫磊压缩机股份有限公司 | Motor cylinder structure of magnetic suspension axial flow fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |