CN204061261U - A kind of induced draught fan braking device - Google Patents
A kind of induced draught fan braking device Download PDFInfo
- Publication number
- CN204061261U CN204061261U CN201420451046.0U CN201420451046U CN204061261U CN 204061261 U CN204061261 U CN 204061261U CN 201420451046 U CN201420451046 U CN 201420451046U CN 204061261 U CN204061261 U CN 204061261U
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- CN
- China
- Prior art keywords
- depression bar
- induced draught
- draught fan
- fan
- fitting seat
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Abstract
The utility model relates to braking device technical field, discloses a kind of induced draught fan braking device, comprising: depression bar and depression bar fitting seat; Depression bar fitting seat is arranged on the pedestal of induced draught fan; One end and the depression bar fitting seat of depression bar are rotationally connected; The position of the fan shaft of depression bar subtend induced draught fan is braking surface.Depression bar fitting seat in the utility model is arranged on the pedestal of induced draught fan; One end and the depression bar fitting seat of depression bar are rotationally connected; The position of the fan shaft of depression bar subtend induced draught fan is braking surface.When after shutting down, unit starts coasting operation; staff depresses depression bar; braking surface is contacted with the fan shaft of induced draught fan; increase the surface friction drag that rotating shaft rotates; make the fan shaft of induced draught fan can stall fast; shorten induced draught fan idling time after a shutdown with this, thus shorten the repair time of equipment, ensure that and industrially to carry out smoothly.
Description
Technical field
The utility model relates to braking device technical field, is mainly applicable to induced draught fan braking device.
Background technique
Dynamic balancing technique rotates a key technology in class machinery (as boiler induced-draft fan) maintenance.Boiler induced-draft fan is in operation often because meeting Rotor Scaling Formation or local deformation cause imbalance, causes the vibration of induced draught fan to increase, so just needs the shutdown maintenance carrying out boiler.
At present, the method removing boiler induced-draft fan amount of unbalance all adopts the mode of spot dynamic balance, increases quality to impeller corresponding site.But existing dynamic balancing instrument once cannot be judged to increase the weight of position exactly and increase the weight of quality, this just needs repeatedly to start at the scene induced draught fan and verifies the accuracy that increases the weight of quality and judge further to add weight and position.But for arranging the production scene of multiple stage boiler equipment simultaneously, boiler flue many employings serial fashion, the flue of every platform boiler equipment all enters main flue channel, discharged to air after dedusting.When after a certain boiler shutdown, due to the suction function of flue, the induced draught fan after blowing out cannot stop immediately, and the wind produced by suction function can extend induced draught fan idling time after a shutdown to a great extent.At present, the idling time that the boiler induced-draft fan in power station smelted by Wuhan Iron and Steel Plant is many at 1.5-2 hour, and rotation speed of fan can be maintained at about 10r/min.
In sum; current series connection boiler induced-draft fan idling time is after a shutdown oversize, extends the overhaul of the equipments time, hinders industrially to carry out smoothly; especially concerning this maintenance mode needing repeatedly to start and shut down of spot dynamic balance, situation is even more serious.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of induced draught fan braking device; it can apply braking action to induced draught fan; shorten induced draught fan idling time after a shutdown, thus shorten the repair time of equipment, ensure that and industrially to carry out smoothly.
For solving the problems of the technologies described above, the utility model provides a kind of induced draught fan braking device, comprising: depression bar and depression bar fitting seat; Described depression bar fitting seat is arranged on the pedestal of induced draught fan; One end and the described depression bar fitting seat of described depression bar are rotationally connected; The position of the fan shaft of described depression bar subtend induced draught fan is braking surface.
Further, also comprise: bearing pin; Through hole is offered in described depression bar fitting seat; One end of described depression bar is circle structure; Described bearing pin is through described through hole and described circle structure.
Further, described braking surface comprises: brake pad and installation cambered surface; Described brake pad is arranged in described installation cambered surface.
Further, described installation cambered surface is semicircle cambered surface, and the internal diameter of described semicircle cambered surface is greater than or equal to the diameter of the fan shaft of described induced draught fan.
The beneficial effects of the utility model are:
Depression bar fitting seat in the induced draught fan braking device that the utility model provides is arranged on the pedestal of induced draught fan; One end and the depression bar fitting seat of depression bar are rotationally connected; The position of the fan shaft of depression bar subtend induced draught fan is braking surface.When after shutting down, unit starts coasting operation; staff depresses depression bar; braking surface is contacted with the fan shaft of induced draught fan; increase the surface friction drag that rotating shaft rotates; make the fan shaft of induced draught fan can stall fast; shorten induced draught fan idling time after a shutdown with this, thus shorten the repair time of equipment, ensure that and industrially to carry out smoothly.
Accompanying drawing explanation
Fig. 1 is the plan view of induced draught fan;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is arranged on the plan view on induced draught fan for induced draught fan braking device that the utility model embodiment provides;
The structural representation of the induced draught fan braking device that Fig. 4 provides for the utility model embodiment;
The plan view of bearing pin in the induced draught fan braking device that Fig. 5 provides for the utility model embodiment;
Fig. 6 is the right elevation of Fig. 5;
The plan view of depression bar fitting seat in the induced draught fan braking device that Fig. 7 provides for the utility model embodiment;
Fig. 8 is the right pseudosection of Fig. 7;
The plan view of depression bar in the induced draught fan braking device that Fig. 9 provides for the utility model embodiment;
Figure 10 is the right elevation of Fig. 9;
The plan view of brake pad in the induced draught fan braking device that Figure 11 provides for the utility model embodiment;
Figure 12 is the right elevation of Figure 11;
Wherein, the pedestal of 1-induced draught fan, the fan shaft of 2-induced draught fan, 3-depression bar fitting seat, 4-depression bar, 5-braking surface, 6-circle structure, 7-installs cambered surface, 8-bearing pin.
Embodiment
For setting forth the utility model further for the technological means reaching predetermined model utility object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, be described in detail to according to the embodiment of induced draught fan braking device that the utility model proposes and working principle.
See Fig. 1-Fig. 4, the induced draught fan braking device that the utility model embodiment provides, comprising: depression bar 4 and depression bar fitting seat 3; Depression bar fitting seat 3 is arranged on the pedestal 1 of induced draught fan; One end and the depression bar fitting seat 3 of depression bar 4 are rotationally connected; The position of the fan shaft 2 of depression bar 4 subtend induced draught fan is braking surface 5.
See Fig. 5-Figure 10, the structure of the device that the utility model embodiment provides is described further, also comprises: bearing pin 8; Through hole is offered in depression bar fitting seat 3; One end of depression bar 4 is circle structure 6; Bearing pin 8 is through through hole and circle structure 6.In the utility model embodiment, depression bar fitting seat 3 is two, is welded in parallel on the pedestal 1 of induced draught fan; The circle structure 6 of depression bar 4 one end is arranged between two depression bar fitting seats 3, and bearing pin 8 is through the circle structure 6 of the through hole on depression bar fitting seat 3 and depression bar 4.
Further, see Figure 11 and Figure 12, braking surface 5 comprises: brake pad and installation cambered surface 7; Utilize sunk screw to be arranged on by brake pad to install in cambered surface 7.Wherein, installing cambered surface 7 is semicircle cambered surface, and the internal diameter of semicircle cambered surface is greater than or equal to the diameter of the fan shaft 2 of induced draught fan.The material of brake pad is rubber.
When after shutting down, unit starts coasting operation, staff depresses depression bar 4, and brake pad is contacted with the fan shaft 2 of induced draught fan, increases the surface friction drag of rotating shaft rotation, makes the fan shaft 2 of induced draught fan can stall fast, shortens the idling time of rotor with this.It should be noted that, when the sense of rotation pressure pressing plate 4 of the fan shaft 2 along induced draught fan, under the drive of rotating shaft rotating inertia force, the fan shaft 2 of semicircle cambered surface and induced draught fan can produce the tendency of fitting further, further reduces period of braking.
Depression bar fitting seat 3 in the induced draught fan braking device that the utility model embodiment provides is arranged on the pedestal 1 of induced draught fan; One end and the depression bar fitting seat 3 of depression bar 4 are rotationally connected; The position of the fan shaft 2 of depression bar 4 subtend induced draught fan is braking surface 5.When after shutting down, unit starts coasting operation; staff depresses depression bar 4; braking surface 5 is contacted with the fan shaft 2 of induced draught fan; increase the surface friction drag that rotating shaft rotates; make the fan shaft 2 of induced draught fan can stall fast; shorten induced draught fan idling time after a shutdown with this, thus shorten the repair time of equipment, ensure that and industrially to carry out smoothly.In the utility model embodiment, installation cambered surface 7 is designed to semicircle cambered surface, and the internal diameter of semicircle cambered surface is greater than or equal to the diameter of the fan shaft 2 of induced draught fan, when depressing depression bar 4, whole semicircle cambered surface contacts with the fan shaft 2 of induced draught fan, therefore both area of contact are maximum, frictional force produced at the same pressure is maximum, and period of braking can be made the shortest.The apparatus structure that the utility model embodiment provides is simple, easy to operate, be easy to realize and Be very effective.
It should be noted last that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to example, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (4)
1. an induced draught fan braking device, is characterized in that, comprising: depression bar and depression bar fitting seat; Described depression bar fitting seat is arranged on the pedestal of induced draught fan; One end and the described depression bar fitting seat of described depression bar are rotationally connected; The position of the fan shaft of described depression bar subtend induced draught fan is braking surface.
2. induced draught fan braking device as claimed in claim 1, is characterized in that, also comprise: bearing pin; Through hole is offered in described depression bar fitting seat; One end of described depression bar is circle structure; Described bearing pin is through described through hole and described circle structure.
3. induced draught fan braking device as claimed in claim 1 or 2, it is characterized in that, described braking surface comprises: brake pad and installation cambered surface; Described brake pad is arranged in described installation cambered surface.
4. induced draught fan braking device as claimed in claim 3, it is characterized in that, described installation cambered surface is semicircle cambered surface, and the internal diameter of described semicircle cambered surface is greater than or equal to the diameter of the fan shaft of described induced draught fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451046.0U CN204061261U (en) | 2014-08-11 | 2014-08-11 | A kind of induced draught fan braking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451046.0U CN204061261U (en) | 2014-08-11 | 2014-08-11 | A kind of induced draught fan braking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204061261U true CN204061261U (en) | 2014-12-31 |
Family
ID=52202788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420451046.0U Expired - Fee Related CN204061261U (en) | 2014-08-11 | 2014-08-11 | A kind of induced draught fan braking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204061261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081012A (en) * | 2019-04-17 | 2019-08-02 | 江苏常熟发电有限公司 | Suction ventilator rotor brake |
-
2014
- 2014-08-11 CN CN201420451046.0U patent/CN204061261U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081012A (en) * | 2019-04-17 | 2019-08-02 | 江苏常熟发电有限公司 | Suction ventilator rotor brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170713 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20180811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |