CN102345623A - Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof - Google Patents
Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof Download PDFInfo
- Publication number
- CN102345623A CN102345623A CN2011102031299A CN201110203129A CN102345623A CN 102345623 A CN102345623 A CN 102345623A CN 2011102031299 A CN2011102031299 A CN 2011102031299A CN 201110203129 A CN201110203129 A CN 201110203129A CN 102345623 A CN102345623 A CN 102345623A
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- Prior art keywords
- stator
- manufacturing
- aluminium lamination
- coal gas
- impeller
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Classifications
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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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel
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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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/12—Light metals
- F05D2300/121—Aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/611—Coating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a coal gas axial flow fan provided with an anti-explosion stator structure and a manufacturing method thereof, and belongs to the technical field of coal gas axial flow fans. The axial flow fan comprises an air inlet box, a collector, a protective shaft pipe, an inlet guide blade, a stator, a rear guide blade, a diffuser, a diffuser inner barrel, an impeller, a main shaft, a coupling, a bearing base and a motor, and is characterized in that the whole inner wall of the stator is cast with an aluminium layer. The manufacturing method is characterized in that the manufacture of the stator also comprises the step of casting the aluminium layer on the whole inner wall. The whole inner wall of the stator of the coal gas axial flow fan is cast with the aluminium layer, under the double action of high-speed rotation and impeller thermal expansion caused by high-temperature medium delivery, no spark is generated and explosion is avoided even if the impeller of the fan touches the inner wall (cast with the aluminium layer) of the stator; and the safe spacing delta between the impeller and the stator is allowed to reach the minimum value, thereby greatly improving the wind pressure and the work efficiency of the coal gas axial flow fan.
Description
Technical field
The invention belongs to coal gas axial-flow blower technical field, be specifically related to a kind of coal gas axial-flow blower and production method thereof with explosion-proof stator structure.
Background technique
Must guarantee certain safety clearance δ between coal gas axial flow fan vane wheel and the stator, if should be worth greatly, then fan performance is affected, and causes blast and efficient to decline to a great extent; If should value little, under the impeller thermal expansion double action that then causes, cause the impeller of processing by steel plate to bump and produce spark with the stator inner wall wiping at the impeller high speed rotating and when carrying high temperature media, pernicious explosive accident takes place then.Therefore; Confirm that reasonable security spacing δ is crucial, for this reason, existing technology all adopts the sacrificial section fan performance and the scheme of paying the utmost attention to Safety performance solves the problems referred to above; The δ value of promptly selecting is all bigger than normal; The result is that the actual performance of blower fan is negative deviation, individual other up to-5%～-7.5% or more than, had a strong impact on the working efficiency of coal gas axial-flow blower.
Summary of the invention
The objective of the invention is to provide a kind of coal gas axial-flow blower and production method thereof with explosion-proof stator structure; The coal gas axial-flow blower that adopts this method to make; High working efficiency not only, and can not wipe because of coal gas axial flow fan vane wheel and stator inner wall and bump and produce the spark generation security incident that sets off an explosion.
Above-mentioned goal of the invention realizes through following technological scheme; A kind of coal gas axial-flow blower with explosion-proof stator structure; Include inlet box, slip ring, protect central siphon, inlet guide vane, stator, rear guide vane, Diffuser, Diffuser inner core, impeller, main shaft, coupling, bearing support, motor; Wherein the impeller hot jacket supported by two bearing supports, and one of them bearing support is located within the stator on main shaft; Motor is located at the left side of inlet box, is the axial-flow blower transferring power by coupling, and its main points are that the whole inwall of stator is cast with aluminium lamination.
The above-mentioned coal gas axial-flow blower with explosion-proof stator structure, one of its structure are for give the making a concerted effort of the aluminium lamination of strengthening stator inner wall and casting, and are that the inwall at stator is shaped on two above dovetail grooves that distribute along the circumferential and axial intersecting parallels.
A kind of production method with coal gas axial-flow blower of explosion-proof stator structure; It comprises the manufacturing of inlet box; Inlet guide vane is welded in slip ring and protects the manufacturing of the manufacturing of the manufacturing of the manufacturing of the slip ring between the central siphon, stator and rear guide vane, Diffuser and Diffuser inner core, impeller, main shaft; The manufacturing of coupling, bearing support, its main points are that the manufacturing of stator also is included in the whole inwall casting of stator aluminium lamination.
The production method of above-mentioned coal gas axial-flow blower with explosion-proof stator structure, the concrete grammar of the whole inwall casting of its stator aluminium lamination is: process two above dovetail grooves that intersecting parallels distributes at stator inner wall earlier along circumferential and axial; Before the casting aluminium lamination, the whole inwall of stator is carried out sand blast and preheating then; Again at the whole inwall casting of stator aluminium lamination; And to the processing of going bad of casting aluminium lamination; The whole inwall of stator to the casting aluminium lamination machines at last, with the desired thickness of concentricity, the aluminium lamination of the aluminium lamination of guaranteeing to cast and the safety clearance δ of impeller and stator.
The present invention is cast with aluminium lamination because of the whole inwall at coal gas axial-flow blower stator; Under the impeller thermal expansion double action that draught fan impeller causes because of high speed rotating and when carrying high temperature media; Even wipe the inwall that is cast with aluminium lamination of running into stator; Also can not produce spark blasts then; Under the impeller thermal expansion double action that has caused when having eliminated coal gas axial flow fan vane wheel high speed rotating fully and having carried high temperature media, the stator inner wall wiping that causes impeller and steel plate to process is bumped and is produced spark, the hidden danger of blasting then; Reach minimum value because above-mentioned reason allows the safety clearance δ of impeller and stator to make, thereby can significantly improve coal gas axial-flow blower blast and working efficiency.
Description of drawings
Fig. 1: plan view of the present invention
The A place cutaway view Amplified image of Fig. 2: Fig. 1
Fig. 3: dovetail groove is pressed the schematic representation that cross form distributes
Fig. 4: the stator of axial-flow blower of the present invention is not cast and is analysed and observe back oat tail groove structure schematic representation before the aluminium lamination
Fig. 5: analyse and observe the back structural representation behind the stator casting aluminium lamination of axial-flow blower of the present invention
Fig. 6: Fig. 5 B cutaway view Amplified image
Fig. 7: Fig. 5 C place enlarged view
Among Fig. 1-7, the 1-motor, the 2-bearing support, the 3-inlet box, 4-protects central siphon, the 5-slip ring; The 6-stator, 7-Diffuser, 8-Diffuser inner core, 9-impeller, 10-inlet guide vane, 11-main shaft; The 12-coupling, 13-stator inner wall, 14-rear guide vane, 15-cross form, 16-dovetail groove, 17-aluminium lamination
Embodiment
By Fig. 1-7 represented be instance of the present invention's " coal gas axial-flow blower " with explosion-proof stator structure, it includes inlet box 3, slip ring 5, protects central siphon 4, inlet guide vane 10, stator 6, rear guide vane 14, Diffuser 7, Diffuser inner core 8, impeller 9, main shaft 11, coupling 12, bearing support 2, motor 1; Wherein impeller 9 hot jackets supported by two bearing supports 2, and one of them bearing support 2 are located within the stator 6 on main shaft 11; Motor 1 is located at the left side of inlet box 3, is the axial-flow blower transferring power by coupling 12; The whole inwall 13 of stator 6 is cast with aluminium lamination 17; For the giving of aluminium lamination 17 of strengthening stator inner wall 13 and casting made a concerted effort, be shaped on circumferential 40 and axial 6 of edge at stator inner wall 13 and be the dovetail grooves 16 that cross form 15 distributes.During blower fan work; Gas is quickened to get into by edge direction vertically downward on the inlet box 3 gradually, and converts substantially horizontal within it to, quickens again behind the entering slip ring 5; Obtain the speed of prewhirling by inlet guide vane 10; Get into again in the impeller 9 accomplish mechanical energy to the pressure of gas can with the conversion of kinetic energy, by rear guide vane 14 the gas circumferential speed is converted into axially then, get at last that the completion dynamic pressure can be to the conversion of static energy in the divergent contour annular pass of Diffuser 7 and 8 formation of Diffuser inner core.
It processes the above embodiments with following production method; It comprises the manufacturing of inlet box 3; Inlet guide vane 10 is welded in slip ring 5 and protects the manufacturing of the manufacturing of the manufacturing of the manufacturing of the slip ring between the central siphon 4, stator 6 and rear guide vane 14, Diffuser 7 and Diffuser inner core 8, impeller 9, main shaft 11, the manufacturing of coupling 12, bearing support 2; Wherein the manufacturing of stator 6 also is included in the manufacturing that stator 6 whole inwalls 13 are cast with aluminium lamination 17; The concrete grammar of the whole inwalls 13 casting aluminium laminations 17 of stator 6 is: at stator 6 inwalls 13 along 40 of the circumferential processing and the axial dovetail grooves 16 of 6 one-tenth cross forms of processing, 15 distributions; Before casting aluminium lamination 17, stator 6 whole inwalls 13 are carried out sand blast and preheating then; Again at stator 6 whole inwall 13 casting aluminium laminations 17; And to the processing of going bad of casting aluminium lamination 17; Stator 6 to casting aluminium lamination 17 machines at last, to guarantee the cast concentricity of aluminium lamination 17, the thickness of casting aluminium lamination 17 and the minimum safe spacing δ of impeller 9 and stator 6.
Claims (4)
1. coal gas axial-flow blower with explosion-proof stator structure; Include inlet box, slip ring, protect central siphon, inlet guide vane, stator, rear guide vane, Diffuser, Diffuser inner core, impeller, main shaft, coupling, bearing support, motor; Wherein the impeller hot jacket is on main shaft; Support by two bearing supports, and one of them bearing support is located within the stator; Motor is located at the left side of inlet box, is the axial-flow blower transferring power by coupling, it is characterized in that the whole inwall of stator is cast with aluminium lamination.
2. the coal gas axial-flow blower with explosion-proof stator structure according to claim 1 is characterized in that making a concerted effort for giving of the aluminium lamination of strengthening stator inner wall and casting, is that the inwall at stator is shaped on two above dovetail grooves that distribute along the circumferential and axial intersecting parallels.
3. production method with coal gas axial-flow blower of explosion-proof stator structure; It comprises the manufacturing of inlet box; Inlet guide vane is welded in slip ring and protects the manufacturing of the manufacturing of the manufacturing of the manufacturing of the slip ring between the central siphon, stator and rear guide vane, Diffuser and Diffuser inner core, impeller, main shaft; The manufacturing of coupling, bearing support is characterized in that the manufacturing of stator also is included in the whole inwall casting of stator aluminium lamination.
4. the production method with coal gas axial-flow blower of explosion-proof stator structure according to claim 3 is characterized in that the concrete grammar of the whole inwall casting of stator aluminium lamination is: process two above dovetail grooves that intersecting parallels distributes at stator inner wall earlier along circumferential and axial; Before the casting aluminium lamination, the whole inwall of stator is carried out sand blast and preheating then; Again at the whole inwall casting of stator aluminium lamination; And to the processing of going bad of casting aluminium lamination; The whole inwall of stator to the casting aluminium lamination machines at last, with the desired thickness of concentricity, the aluminium lamination of the aluminium lamination of guaranteeing to cast and the safety clearance δ of impeller and stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102031299A CN102345623A (en) | 2011-07-20 | 2011-07-20 | Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102031299A CN102345623A (en) | 2011-07-20 | 2011-07-20 | Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102345623A true CN102345623A (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102031299A Pending CN102345623A (en) | 2011-07-20 | 2011-07-20 | Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102345623A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666371A (en) * | 1981-03-25 | 1987-05-19 | Rolls-Royce Plc | Gas turbine engine having improved resistance to foreign object ingestion damage |
| CN201202688Y (en) * | 2008-05-30 | 2009-03-04 | 山西省运城安瑞节能风机有限公司 | Mining explosion-proof axial flow fan |
| CN201629624U (en) * | 2010-01-22 | 2010-11-10 | 常州市华盛电机厂 | Explosion-proof motor for storage battery vehicle |
| CN101968061A (en) * | 2010-11-19 | 2011-02-09 | 苏州顶裕节能设备有限公司 | Explosionproof fan |
| CN201739195U (en) * | 2010-05-18 | 2011-02-09 | 江苏金通灵风机股份有限公司 | Converter gas dry process axial flow fan device |
| WO2011078962A1 (en) * | 2009-12-22 | 2011-06-30 | Nuovo Pignone S.P.A. | Abradable seal with axial offset |
| CN202157985U (en) * | 2011-07-20 | 2012-03-07 | 浙江义乌星耀风机有限公司 | Gas axial flow fan with anti-explosion stator structure |
-
2011
- 2011-07-20 CN CN2011102031299A patent/CN102345623A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666371A (en) * | 1981-03-25 | 1987-05-19 | Rolls-Royce Plc | Gas turbine engine having improved resistance to foreign object ingestion damage |
| CN201202688Y (en) * | 2008-05-30 | 2009-03-04 | 山西省运城安瑞节能风机有限公司 | Mining explosion-proof axial flow fan |
| WO2011078962A1 (en) * | 2009-12-22 | 2011-06-30 | Nuovo Pignone S.P.A. | Abradable seal with axial offset |
| CN201629624U (en) * | 2010-01-22 | 2010-11-10 | 常州市华盛电机厂 | Explosion-proof motor for storage battery vehicle |
| CN201739195U (en) * | 2010-05-18 | 2011-02-09 | 江苏金通灵风机股份有限公司 | Converter gas dry process axial flow fan device |
| CN101968061A (en) * | 2010-11-19 | 2011-02-09 | 苏州顶裕节能设备有限公司 | Explosionproof fan |
| CN202157985U (en) * | 2011-07-20 | 2012-03-07 | 浙江义乌星耀风机有限公司 | Gas axial flow fan with anti-explosion stator structure |
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Application publication date: 20120208 |