CN202520619U - High pressure centrifugal blower for hot coal gas - Google Patents
High pressure centrifugal blower for hot coal gas Download PDFInfo
- Publication number
- CN202520619U CN202520619U CN2012200625292U CN201220062529U CN202520619U CN 202520619 U CN202520619 U CN 202520619U CN 2012200625292 U CN2012200625292 U CN 2012200625292U CN 201220062529 U CN201220062529 U CN 201220062529U CN 202520619 U CN202520619 U CN 202520619U
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- centrifugal blower
- high pressure
- coal gas
- hot coal
- pressure centrifugal
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Abstract
The utility model relates to a high pressure centrifugal blower for hot coal gas, wherein the high pressure centrifugal blower has the hermetic seal function in the high pressure conveying process of the hot coal gas. The high pressure centrifugal blower for the hot coal gas comprises a centrifugal fan. A fluid injection hole is arranged in a sealing flange shaft casing for an impeller in the centrifugal fan. The upper end of the fluid injection hole is hermetically communicated with an air tap and the lower end of the fluid injection hole is a circular groove. The circular groove and a main shaft face for driving the centrifugal blower form a high pressure fluid chamber. The high pressure centrifugal blower for the hot coal gas has the advantages that not only is the hot coal gas prevented from leaking from the main shaft face effectively, but also the external air cannot enter into the shell so as to ensure that the high pressure centrifugal blower for the hot coal gas operates safely and reliably through the design of a nitrogen or superheated steam sealing structure on the basis of an original shaft sealing structure of a pressurizing fan; and not only is the lubricating oil in a bearing pedestal prevented from leaking, but also a yellow phosphorus tail gas pressurizing fan is enabled to operate safely and reliably through the design of an anticlockwise spiral screw thread structure and a clockwise spiral structure of shaft hole faces of a front end cover and a back end cover of the bearing pedestal, respectively.
Description
Technical field
The utility model relates to a kind of heating gas in the high-pressure delivery process, and its high pressure centrifugal blower has the heating gas high pressure centrifugal blower of hermetic seal function, belongs to pressure blower and makes the field.
Background technique
All CN1100211C of the applicant, title " a kind of boosting centrifugal blower and encapsulating method of carrying heating gas " are mainly used in the pressurized delivered of heating gas, also can be used for the pressurized delivered of other similar high temperature media.It comprises casing group, impeller sets, front shroud group, sealing group, main shaft, lagging casing, insulation filler, bearing housing, coupling, anti-explosion motor and frame; Constitute unlatching radial impeller group by reel, blade, wheel disc and auxiliary blade; Auxiliary blade is positioned at the back of blade; Axle sleeve in the sealing group has air flue and logical main shaft, and mouth one end of bleeding passes the hole on the sealing group shell and is communicated with air flue sealing in the axle sleeve, and the air intake pipe of front shroud group is provided with air inlet nozzle; Its air inlet nozzle adopts connecting leg to be communicated with the mouth of bleeding, and the wall of casing group is made up of lagging casing and insulation filler.
The model utility content
Purpose of design: on the basis of all background techniquies of the applicant, design a kind of heating gas in the high-pressure delivery process, its high pressure centrifugal blower has the heating gas high pressure centrifugal blower of hermetic seal function.
Design proposal: in order to realize above-mentioned purpose of design.1, shaft sealing increases the design in the hole of nitrogen or superheated vapor on the basis of former sealing, is one of technical characteristics of the utility model.The purpose of doing like this is: have fluid injecting hole on the axle housing owing to the sealing flange that in pressure blower, is positioned at the impeller back side; This fluid injecting hole upper end seal with valve be communicated with, lower end groove ringwise; In the use when nitrogen or superheated vapor get into the annular groove in the axle housing axis hole through valve; What in the chamber of annular groove and spindle face formation, form is that band presses nitrogen or band to press superheated vapor; This band presses nitrogen or superheated vapor to stop heating gas to be leaked by spindle face effectively, and air outside can not be got in the casing.2, the axis hole face of bearing support front cover and rear end cover is counterclockwise taenidium buckle structure and the clockwise design of helix structure respectively, be the utility model technical characteristics two.The purpose of doing like this is: because the pressure blower main shaft is for turning clockwise; And the spiral screw thread of the axis hole face of the front cover of bearing support is when being counterclockwise; Just and main axis rotation in the opposite direction; Therefore the lubricant oil that is positioned at bearing support under the effect of the counterclockwise helix structure of front cover, end cap flows inside forward, and can't flow out outside the front cover; In like manner; See rotating to be counterclockwise of main shaft from bearing support tail end (rear end cover), the helix structure of end cap axis hole face is clockwise thereafter, and the lubricant oil that in like manner is positioned at bearing support is under the effect of the clockwise helix structure of rear end cover; End cap flows inside backward, and can't flow out outside the rear end cover.3, the axis hole face of front cover and rear end cover and spindle face gap be less than the design of 0.1mm, be the utility model technical characteristics three.The purpose of doing like this is: axis hole face and the spindle face gap that test shows current end cap and rear end cover is during less than 0.1mm; During main axis rotation and front cover and the formed oil film face of rear end cover axis hole face not only be with pressure; And has a good stable property; It can play good seal action, prevents that the lubricant oil in the bearing support from running leakage.
Technological scheme: heating gas high pressure centrifugal blower; It comprises centrifugal blower; Be used in the said centrifugal blower having fluid injecting hole on the sealing flange axle housing of impeller; Fluid injecting hole upper end is communicated with the valve sealing, lower end groove ringwise, this annular groove and be used to drive the spindle face formation high-pressure spray body cavity of centrifugal blower.
The utility model is compared with background technique; The one, through the design of nitrogen on the basis of the original axle sealing structure of pressure blower or superheated vapor sealing configuration; Can stop heating gas to leak effectively by spindle face; Air outside can not be got in the casing, guaranteed that the heating gas high pressure centrifugal blower moves safely and reliably; The 2nd, the axis hole face of bearing support front cover and rear end cover is counterclockwise taenidium buckle structure and the design of helix structure clockwise respectively, has both guaranteed that the lubricant oil in the bearing support did not leak outside, and has guaranteed that again the yellow phosphoric tail gas pressure blower moves safely and reliably.
Description of drawings
Fig. 1 is the structural representation of heating gas high pressure centrifugal blower.
Fig. 2 is the schematic representation of heating gas high pressure centrifugal blower axle sealing structure.
Fig. 3 is the structural representation of bearing support.
Embodiment
Embodiment 1: with reference to accompanying drawing 1-3.A kind of heating gas high pressure centrifugal blower; It comprises centrifugal blower; Be used in the said centrifugal blower having fluid injecting hole 3 on sealing flange 1 axle housing of impeller; 2 sealings of fluid injecting hole 3 upper ends and valve are communicated with, lower end groove 301 ringwise, this annular groove 301 and 4 formations of the main shaft high-pressure spray body cavity that is used to drive centrifugal blower.The shaft hole inner wall that is positioned at the flange axle housing of high-pressure spray body cavity front side constitutes multiple tracks groove labyrinth seal structure 305 by the multiple tracks groove.The fluted shape step hole of the axle housing end face of said sealing flange 1, seal ring 304 is embedded on the step of groove-like step hole, and flange-like plug 302 is positioned at the groove-like step hole and seal ring 304 is held out against.Said flange-like plug 302 shaft hole inner walls constitute multiple tracks groove labyrinth seal structure 303 by the multiple tracks groove.The axis hole face of said pressure blower bottom bracket 5 front covers 501 and rear end cover 502 is counterclockwise taenidium buckle structure 503 and clockwise helix structure 504 respectively.Face from front cover 501; Its main shaft 4 rotates for along pin the time; It is just the opposite with the formed direction of front cover 501 axis hole faces of counterclockwise helix structure 503, so the counterclockwise helix structure of front cover 501 axis hole faces can stop the lubricant oil in the bearing support 5 to leak outside reliably; Face from rear end cover 502; Its main shaft 4 rotates during for contrary pin; It is just the opposite with the formed direction of rear end cover 502 axis hole faces of clockwise helix structure 504, so the clockwise helix structure of rear end cover 502 axis hole faces can stop the lubricant oil in the bearing support 5 to leak outside reliably.The axis hole face of said front cover 501 and rear end cover 502 and 4 gaps of main shaft are less than 0.1mm, and purpose is in dynamically, to form band to press oil film.Label 5 is a bearing support among the figure, and label 6 is a coupling, and label 7 is a support, and label 8 is a motor, and its assembly structure is an existing technology, is not described herein at this.Label 5 is a bearing support among the figure, and label 6 is a coupling, and label 7 is a support, and label 8 is a motor, and its assembly structure is an existing technology, is not described herein at this.The encapsulating method of its heating gas high pressure centrifugal blower; It is characterized in that: nitrogen or superheated vapor are got into annular grooves 301 by valve 2 constitute in the high-pressure spray body cavity with the spindle face 4 that is used to drive centrifugal blower; The nitrogen or the superheated vapor that are positioned at the high-pressure spray body cavity form high pressure draught at spindle face 4; This high pressure draught can fundamentally stop by heating gas and be used for and main shaft seal multiple tracks groove labyrinth seal structure 305 movingly from spindle face 4 entering, guarantees that high pressure centrifugal blower does not have leakage when carrying heating gas.
What need understand is: though the foregoing description is to the mentality of designing of the utility model detailed text description of contrasting; But these text descriptions; Just the simple text of the utility model mentality of designing is described; Rather than to the restriction of the utility model mentality of designing, any combination, increase or modification that does not exceed the utility model mentality of designing all falls in the protection domain of the utility model.
Claims (4)
1. heating gas high pressure centrifugal blower; It comprises centrifugal blower; It is characterized in that: be used in the said centrifugal blower having fluid injecting hole (3) on sealing flange (1) axle housing of impeller; Fluid injecting hole (3) upper end is communicated with valve (2) sealing, lower end groove (301) ringwise, this annular groove (301) and be used to drive main shaft (4) the face formation high-pressure spray body cavity of centrifugal blower.
2. heating gas high pressure centrifugal blower according to claim 1 is characterized in that: the shaft hole inner wall that is positioned at the flange axle housing of high-pressure spray body cavity front side constitutes multiple tracks groove labyrinth seal structure (305) by the multiple tracks groove.
3. heating gas high pressure centrifugal blower according to claim 1; It is characterized in that: the fluted shape step hole of the axle housing end face of said sealing flange (1); Seal ring (304) is embedded on the step of groove-like step hole, and flange-like plug (302) is positioned at the groove-like step hole and seal ring (304) is held out against.
4. heating gas high pressure centrifugal blower according to claim 3 is characterized in that: said flange-like plug (302) shaft hole inner wall constitutes multiple tracks groove labyrinth seal structure (303) by the multiple tracks groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200625292U CN202520619U (en) | 2012-02-24 | 2012-02-24 | High pressure centrifugal blower for hot coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200625292U CN202520619U (en) | 2012-02-24 | 2012-02-24 | High pressure centrifugal blower for hot coal gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520619U true CN202520619U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200625292U Expired - Lifetime CN202520619U (en) | 2012-02-24 | 2012-02-24 | High pressure centrifugal blower for hot coal gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520619U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562646A (en) * | 2012-02-24 | 2012-07-11 | 杭州余杭特种风机有限公司 | Hot-gas high-pressure centrifugal blower and sealing method thereof |
| CN104963885A (en) * | 2015-06-29 | 2015-10-07 | 萧振林 | Novel draft-fan-driven connecting and sealing device |
-
2012
- 2012-02-24 CN CN2012200625292U patent/CN202520619U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562646A (en) * | 2012-02-24 | 2012-07-11 | 杭州余杭特种风机有限公司 | Hot-gas high-pressure centrifugal blower and sealing method thereof |
| CN104963885A (en) * | 2015-06-29 | 2015-10-07 | 萧振林 | Novel draft-fan-driven connecting and sealing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
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| CX01 | Expiry of patent term |