CN202157985U - Gas axial flow fan with anti-explosion stator structure - Google Patents
Gas axial flow fan with anti-explosion stator structure Download PDFInfo
- Publication number
- CN202157985U CN202157985U CN2011202566082U CN201120256608U CN202157985U CN 202157985 U CN202157985 U CN 202157985U CN 2011202566082 U CN2011202566082 U CN 2011202566082U CN 201120256608 U CN201120256608 U CN 201120256608U CN 202157985 U CN202157985 U CN 202157985U
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- stator
- impeller
- axial flow
- gas axial
- explosion
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Abstract
The utility model relates to a gas axial flow fan with an anti-explosion stator structure, belonging to the technical field of gas axial flow fans. The gas axial flow fan with the anti-explosion stator structure comprises an air inlet box, a flow collector, an axle protecting tube, an inlet guide vane, a stator, a back guide vane, a diffuser, a diffuser inner cylinder, an impeller, a main shaft, a coupling, two bearing seats and a motor, wherein the impeller is arranged on the main shaft through shrink fit and supported by the two bearing seats; one of the bearing seats is arranged in the stator; the motor is arranged at the left side of the air inlet box; the motive power of the gas axial flow fan is transmitted by the coupling; and the gas axial flow fan is characterized in that an aluminum layer is casted on the whole inner wall of the stator. According to the utility model, the aluminum layer is casted on the whole inner wall of the stator of the gas axial flow fan; spark and explosion do not happen even if the fan impeller rubs the inner wall of the stator, on which the aluminum layer is casted, under the double action of impeller thermal expansion due to high-speed rotation and high-temperature medium conveying; and therefore, the safety spacing delta between the impeller and the stator is permitted to a minimal value, and the work efficiency can be greatly increased.
Description
Technical field
The utility model belongs to coal gas axial-flow blower technical field, is specifically related to a kind of coal gas axial-flow blower 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 purpose of the utility model is that a kind of coal gas axial-flow blower with explosion-proof stator structure will be provided; This coal gas axial-flow blower is 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.
The utility model 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: the plan view of the utility model
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 the utility model axial-flow blower 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 the utility model axial-flow blower
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 an instance of the utility model, 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.
A kind of coal gas axial-flow blower with explosion-proof stator structure belongs to coal gas axial-flow blower technical field.It includes 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.The utility model 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; Can not produce spark yet and blast then,, thereby can significantly improve its working efficiency because above-mentioned reason allows the safety clearance δ of impeller and stator to reach minimum value.
Claims (2)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202566082U CN202157985U (en) | 2011-07-20 | 2011-07-20 | Gas axial flow fan with anti-explosion stator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202566082U CN202157985U (en) | 2011-07-20 | 2011-07-20 | Gas axial flow fan with anti-explosion stator structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202157985U true CN202157985U (en) | 2012-03-07 |
Family
ID=45765625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202566082U Expired - Lifetime CN202157985U (en) | 2011-07-20 | 2011-07-20 | Gas axial flow fan with anti-explosion stator structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202157985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345623A (en) * | 2011-07-20 | 2012-02-08 | 浙江义乌星耀风机有限公司 | Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof |
-
2011
- 2011-07-20 CN CN2011202566082U patent/CN202157985U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345623A (en) * | 2011-07-20 | 2012-02-08 | 浙江义乌星耀风机有限公司 | Coal gas axial flow fan provided with anti-explosion stator structure and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |