CN204663918U - A kind of large-scale dark transmission axle induced-draft fan group - Google Patents
A kind of large-scale dark transmission axle induced-draft fan group Download PDFInfo
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- CN204663918U CN204663918U CN201520369915.XU CN201520369915U CN204663918U CN 204663918 U CN204663918 U CN 204663918U CN 201520369915 U CN201520369915 U CN 201520369915U CN 204663918 U CN204663918 U CN 204663918U
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Abstract
The utility model relates to large-scale axial flow type blower fan and necessary electromotor manufacturing technology field thereof, particularly relate to a kind of large-scale dark transmission axle induced-draft fan group, comprise: outer cylinder body 1, impeller 2, air guide sleeve 3, entrance stator blade 4, main bearing box 5, inner barrel 6, main bearing box cooling air compartment 7, motor 8, outlet stator blade 9, external support board 10, main cooling fan 11, cold wind suction chamber 12, oil hydraulic cylinder cooling air compartment 15, it is characterized in that: be provided with oil hydraulic cylinder cooling air compartment 15 in air guide sleeve 3, main bearing box 5, motor 8 are supported in inner barrel 6; Motor 8 free end is provided with main cooling fan 11 and cold wind suction chamber 12, and cold wind suction chamber 12 is communicated with the external world by hollow external support board 10.The beneficial effects of the utility model are: described large-scale dark transmission axle induced-draft fan group operational efficiency is high, power consumption is low, noise is little, not easily surge fault occurs, and wind turbine layout is compact and manufacture consumption steel are few, cost is low.
Description
Technical field
The utility model relates to large-scale axial flow type blower fan and necessary electromotor manufacturing technology field thereof, is exactly a kind of large-scale dark transmission axle induced-draft fan group.
Background technique
Prior art large-scale axial flow type air inducing unit is primarily of motor, rotor general assembly, bearing pack, inlet box, main body air duct, jack shaft and the composition such as coupling, diffuser, lubricating fitting and pipeline, moving blade regulating device, flexible shaft coupling, base, instrumentation, silencing apparatus, bearing housing (and oil hydraulic cylinder) cooling fan.Large-scale axial flow type air inducing unit is owing to axially passing in and out the needs of flue gas, and the outside being arranged on inlet box haveed no alternative but by its motor, and motor reel is connected by jack shaft and coupling with fan shaft, therefore its kind of drive belongs to the bright kind of drive.The shortcoming that prior art exists is: air inducing shaft system of unit is long, and the natural frequency of vibration is low, easily enters resonance region, causes vibration excessive and damage equipment, jack shaft and coupling also make the gross weight of induced draught fan group rotor increase, and thus also make its power consumption increase, inlet box complex structural designs, the thick intermediate shaft tube be enclosed within jack shaft passes inlet box, fans entrance air-flow is made to be subject to larger disturbance and obstruction, the uniformity of blower fan air intake is deteriorated, the aerodynamic characteristics of blower fan is deteriorated, gas separaion and backflow phenomenon is there is near inlet box outlet suction surface, fan efficiency is caused to decline, also exacerbate the aerodynamic noise of machine simultaneously, approximate 90 ° of air-flows of turning are difficult to abundant acceleration and namely will enter wind motor leaf entrance in shorter distance, its energy loss is larger, if blower fan load is excessive, even can cause air-flow progressive failure, make blower fan generation surge.
Summary of the invention
In order to overcome prior art large-scale axial flow type air inducing unit above shortcomings, the technical problems to be solved in the utility model is to provide a kind of axle system compared with short, characteristics of compact layout, air inlet is smooth, efficiency is high, power consumption is low, noise is little, stable large-scale dark transmission axle induced-draft fan group.
The utility model solves the technological scheme that its technical problem adopts: a kind of large-scale dark transmission axle induced-draft fan group, comprise: outer cylinder body (1), impeller (2), air guide sleeve (3), entrance stator blade (4), main bearing box (5), inner barrel (6), main bearing box cooling air compartment (7), motor (8), outlet stator blade (9), external support board (10), main cooling fan (11), cold wind suction chamber (12), air inlet screen (13), suction valve (14), oil hydraulic cylinder cooling air compartment (15), supplement heat rejecter fan (16), motor hot blast discharge chamber (17), hot blast header (18), guard seal blower fan (19), it is characterized in that: impeller (2) is front is provided with air guide sleeve (3), air guide sleeve (3) is connected and fixed by entrance stator blade (4) and outer cylinder body (1), oil hydraulic cylinder cooling air compartment (15) is provided with in air guide sleeve (3), main bearing box (5) is supported on inner barrel (6) by the dunnage of two ends and blower fan axes normal, constitutes main bearing box cooling air compartment (7), motor (8) is then by being supported in inner barrel (6) with the dunnage of fan shaft line parallel, inner barrel (6) is then by exporting stator blade (9) and being fixed on outer cylinder body (1) with the external support board (10) of fan shaft line parallel, motor (8) free end is provided with main cooling fan (11) and cold wind suction chamber (12), motor (8) driving end is provided with motor hot blast discharge chamber (17), cold wind suction chamber (12) is communicated with the external world by hollow external support board (10), and the air intake pipe ingress of cold wind suction chamber (12) is provided with air inlet screen (13) and suction valve (14).Main cooling fan (11) high pressure side and oil hydraulic cylinder cool air compartment (15) and main bearing box and cool between air compartment (7) and be respectively equipped with cooling duct M, and cooling duct M also exports with supplement heat rejecter fan (16) and is connected.Main bearing box cooling air compartment (7) and adjacent motor hot blast discharge chamber (17) thereof are respectively equipped with hot blast exhaust port, the two is all connected with hot blast header (18) by hollow outlet stator blade (9) and pipeline, and hot blast header (18) is then connected with guard seal blower fan (19) again.
Compared with the prior art, its beneficial effect is the utility model: one) axle system shortens, and makes the weight saving of induced draught fan group rotor, runs power consumption and reduces; Meanwhile, the natural frequency of fan rotor can also be improved, avoid or reduce contingent resonance phenomenon.Two) jack shaft, jack shaft sleeve pipe and coupling are cancelled, and large-scale axial flow type air inducing unit cost will reduce greatly.Three) unsteady perturbation of fans entrance air-flow reduces, aerodynamic noise reduces, and is conducive to preventing draught fan impeller rotating stall and blower fan stall margin from reducing, improves the Security of fan operation and fan efficiency.Four) motor is closed in blower fan inner barrel, such that the layout of whole air inducing unit is compacter, running noises reduces greatly.Five) hot blast header is the hot blast that guard seal blower fan provides proper temperature, and therefore the Electric heating appliance of guard seal wind system can be cancelled, and in turn saves a part of electric energy; Also effectively reduce the ambient temperature of fan house, the cooling for air inducing unit provides condition advantageously simultaneously.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 longitudinal partly cut-away schematic diagram.
In figure: 1-outer cylinder body, 2-impeller, 3-air guide sleeve, 4-entrance stator blade, 5-main bearing box, 6-inner barrel, the cooling of 7-main bearing box air compartment, 8-motor, 9-exports stator blade, 10-external support board, the main cooling fan of 11-, 12-cold wind suction chamber, 13-air inlet screen, 14-suction valve, 15-oil hydraulic cylinder cooling air compartment, 16-supplement heat rejecter fan, 17-motor hot blast discharge chamber, 18-hot blast header, 19-guard seal blower fan.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, illustrated embodiment is only for explaining explanation, being not intended to limit scope of the present utility model.All any amendments, improvement, equivalent replacement etc. made within thought of the present utility model and principle, all should be included within protection domain of the present utility model.
See Fig. 1, a kind of large-scale dark transmission axle induced-draft fan group comprises: outer cylinder body (1), impeller (2), air guide sleeve (3), entrance stator blade (4), main bearing box (5), inner barrel (6), main bearing box cooling air compartment (7), motor (8), outlet stator blade (9), external support board (10), main cooling fan (11), cold wind suction chamber (12), air inlet screen (13), suction valve (14), oil hydraulic cylinder cooling air compartment (15), supplement heat rejecter fan (16), motor hot blast discharge chamber (17), hot blast header (18), guard seal blower fan (19), wherein: impeller (2) is front is provided with air guide sleeve (3), air guide sleeve (3) is connected and fixed by entrance stator blade (4) and outer cylinder body (1), oil hydraulic cylinder cooling air compartment (15) is provided with in air guide sleeve (3), main bearing box (5) is supported on inner barrel (6) by the dunnage of two ends and blower fan axes normal, constitutes main bearing box cooling air compartment (7), motor (8) is then by being supported in inner barrel (6) with the dunnage of fan shaft line parallel, inner barrel (6) is then by exporting stator blade (9) and being fixed on outer cylinder body (1) with the external support board (10) of fan shaft line parallel, motor (8) free end is provided with main cooling fan (11) and cold wind suction chamber (12), motor (8) driving end is provided with motor hot blast discharge chamber (17), cold wind suction chamber (12) is communicated with the external world by hollow external support board (10), and the air intake pipe ingress of cold wind suction chamber (12) is provided with air inlet screen (13) and suction valve (14).Main cooling fan (11) high pressure side and oil hydraulic cylinder cool air compartment (15) and main bearing box and cool between air compartment (7) and be respectively equipped with cooling duct M, and cooling duct M also exports with supplement heat rejecter fan (16) and is connected.Main bearing box cooling air compartment (7) and adjacent motor hot blast discharge chamber (17) thereof are respectively equipped with hot blast exhaust port, the two is all connected with hot blast header (18) by hollow outlet stator blade (9) and pipeline, and hot blast header (18) is then connected with guard seal blower fan (19) again.
See Fig. 1, when described dark transmission axle induced-draft fan group is run, motor (8) impeller (2) and main cooling fan (11) rotate, flue gas is successively through air guide sleeve (3), entrance stator blade (4), impeller (2), outlet stator blade (9), external support board (10), and the ring between outer cylinder body (1) and inner barrel (6) fills in passage and flows, extraneous cooling-air enters cold wind suction chamber (12) through air inlet screen (13) and suction valve (14), flowed in inner barrel (6) by the cool air major part after main cooling fan (11) supercharging, motor heating wind discharge chamber (17) is entered after skimming over motor (8) surface, Self-air-heating exhaust port drains into hot blast header (18), fraction supercharging cooling-air then enters main bearing box cooling air compartment (7) and oil hydraulic cylinder cooling air compartment (15) respectively along cooling duct M, the last Self-air-heating exhaust port of cooling-air entering main bearing box cooling air compartment (7) also drains into hot blast header (18), the cooling-air entering oil hydraulic cylinder cooling air compartment (15) then drains into impeller (2) movable vane entrance.The hot blast that hot blast header (18) is collected then is delivered to the places such as gas baffle by guard seal blower fan (19).
See Fig. 1, in order to prevent the short term superheating such as blower fan stoppage in transit rear min bearing case (5), motor (8), supplement heat rejecter fan (16) should be started, and close suction valve (14); Supplement heat rejecter terminates, and stops supplement heat rejecter fan (16), and opens suction valve (14).
Claims (4)
1. one kind large-scale dark transmission axle induced-draft fan group, comprise: outer cylinder body (1), impeller (2), air guide sleeve (3), entrance stator blade (4), main bearing box (5), inner barrel (6), main bearing box cooling air compartment (7), motor (8), outlet stator blade (9), external support board (10), main cooling fan (11), cold wind suction chamber (12), air inlet screen (13), suction valve (14), oil hydraulic cylinder cooling air compartment (15), supplement heat rejecter fan (16), motor hot blast discharge chamber (17), hot blast header (18), guard seal blower fan (19), it is characterized in that: impeller (2) is front is provided with air guide sleeve (3), air guide sleeve (3) is connected and fixed by entrance stator blade (4) and outer cylinder body (1), oil hydraulic cylinder cooling air compartment (15) is provided with in air guide sleeve (3), main bearing box (5) is supported on inner barrel (6) by the dunnage of two ends and blower fan axes normal, constitutes main bearing box cooling air compartment (7), motor (8) is then by being supported on inner barrel (6) with the dunnage of fan shaft line parallel, inner barrel (6) is then by exporting stator blade (9) and being fixed on outer cylinder body (1) with the external support board (10) of fan shaft line parallel.
2. a kind of large-scale dark transmission axle induced-draft fan group as claimed in claim 1, it is characterized in that: described motor (8) free end is provided with main cooling fan (11) and cold wind suction chamber (12), motor (8) driving end is provided with motor hot blast discharge chamber (17), cold wind suction chamber (12) is communicated with the external world by hollow external support board (10), and the air intake pipe ingress of cold wind suction chamber (12) is provided with air inlet screen (13) and suction valve (14).
3. a kind of large-scale dark transmission axle induced-draft fan group as claimed in claim 1, it is characterized in that: described main cooling fan (11) high pressure side and oil hydraulic cylinder cool air compartment (15) and main bearing box and cool between air compartment (7) and be respectively equipped with cooling duct M, and cooling duct M also exports with supplement heat rejecter fan (16) and is connected.
4. a kind of large-scale dark transmission axle induced-draft fan group as claimed in claim 1, it is characterized in that: described main bearing box cooling air compartment (7) and adjacent motor hot blast discharge chamber (17) thereof are respectively equipped with hot blast exhaust port, the two is all connected with hot blast header (18) by hollow outlet stator blade (9) and pipeline, and hot blast header (18) is then connected with guard seal blower fan (19) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369915.XU CN204663918U (en) | 2015-05-26 | 2015-05-26 | A kind of large-scale dark transmission axle induced-draft fan group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369915.XU CN204663918U (en) | 2015-05-26 | 2015-05-26 | A kind of large-scale dark transmission axle induced-draft fan group |
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| Publication Number | Publication Date |
|---|---|
| CN204663918U true CN204663918U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520369915.XU Expired - Fee Related CN204663918U (en) | 2015-05-26 | 2015-05-26 | A kind of large-scale dark transmission axle induced-draft fan group |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840528A (en) * | 2016-05-25 | 2016-08-10 | 山西巨龙风机有限公司 | Short-shaft mining main fan |
| CN106609503A (en) * | 2015-10-22 | 2017-05-03 | 苏州宝时得电动工具有限公司 | Blower |
| CN108150455A (en) * | 2018-01-31 | 2018-06-12 | 长安益阳发电有限公司 | A kind of heat power plant boiler air-introduced machine and cooling means |
-
2015
- 2015-05-26 CN CN201520369915.XU patent/CN204663918U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609503A (en) * | 2015-10-22 | 2017-05-03 | 苏州宝时得电动工具有限公司 | Blower |
| CN105840528A (en) * | 2016-05-25 | 2016-08-10 | 山西巨龙风机有限公司 | Short-shaft mining main fan |
| CN108150455A (en) * | 2018-01-31 | 2018-06-12 | 长安益阳发电有限公司 | A kind of heat power plant boiler air-introduced machine and cooling means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20160526 |