CN104632682B - A kind of adjustable turbine-generator units cooling fan and blade adjustments method thereof - Google Patents
A kind of adjustable turbine-generator units cooling fan and blade adjustments method thereof Download PDFInfo
- Publication number
- CN104632682B CN104632682B CN201510065972.3A CN201510065972A CN104632682B CN 104632682 B CN104632682 B CN 104632682B CN 201510065972 A CN201510065972 A CN 201510065972A CN 104632682 B CN104632682 B CN 104632682B
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- Prior art keywords
- blade
- force
- operation arm
- pivot
- hole
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0246—Surge control by varying geometry within the pumps, e.g. by adjusting vanes
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
Abstract
The present invention discloses a kind of adjustable turbine-generator units cooling fan, the blade that comprise fan center's body, is connected on fan center's body, the operation arm of force, transmission pin, synchronous operation ring, described blade one end is provided with pivot, the circumferential direction of described fan center body have some for the first through hole through pivot, described pivot is after the first through hole, its end is connected by one end of a cylinder pin with the operation arm of force, and the other end of the described operation arm of force is connected with synchronous operation ring by transmission pin. Between pivot of the present invention and fan center's body axis hole, special type bearing shell is set and accurately to locate and reduces operational torque. Operation arm of force one end is held tightly on blade pivot, and guarantee facilitates install and adjust under operating reliable prerequisite. The other end is connected by transmission pin with synchronous operation ring. Synchronous operation ring moves along generator shaft axis direction by a small margin, and the drive operation arm of force rotates around blade pivot axis, and then realizes the change of blades installation angle.
Description
Technical field
The present invention relates to a kind of cooling fan, particularly relate to a kind of adjustable turbine-generator units cooling fan and blade adjustments method thereof.
Background technology
The generator of turbine-generator units in operational process owing to the reason such as electromagnetism, mechanical friction produces a large amount of heat. The generation of heat causes the increase of unit size; the uneven of heat distribution causes producing in rotor or stator bigger thermal stresses; in frequent start-stop unit process, copper conductor is different with the temperature thermal expansivity that outsourcing is insulated and cause fatigue, and then causes the destruction of insulation. The existence of heat not only reduces the efficiency of generator, and endangers stability and security that generator runs, shortens the work-ing life of generating set.
The common generator type of cooling is had time cold, water-cooled and transpiration cooling mode. The empty cold object utilizing the circulation of cold and hot air in generator base is cheated to realize cooling, some units install cooling fan forced ventilation to improve cooling performance in generator rotor upper end or lower end, and this kind of method structure is simple, reliable.
Current fan is when being summer day high temperature according to maximum load and room temperature, and required ventilation carries out designing, and the laying angle of fan blade is relatively big, and blade is welded on fan center's body. Turbine-generator units usually undertakes peak-frequency regulation task, annual completely send out hours to account for the proportion of the total hours of whole year operation little, annual room temperature mean value is much smaller than summer day top temperature in addition, therefore there is excessive design redundancy in this kind of fan, windage is big, and then have impact on the raising of generating set generating efficiency.
Summary of the invention
For overcoming defect and the deficiency of existing stator blades fan, the present invention provides a kind of adjustable turbine-generator units cooling fan and blade adjustments method thereof, to improve the efficiency of generating set.
The technical solution adopted in the present invention is: a kind of adjustable turbine-generator units cooling fan, the blade that comprise fan center's body, is connected on fan center's body, the operation arm of force, transmission pin, synchronous operation ring, described blade one end is provided with pivot, the circumferential direction of described fan center body have some for the first through hole through pivot, described pivot is after the first through hole, its end is connected by one end of a cylinder pin with the operation arm of force, and the other end of the described operation arm of force is connected with synchronous operation ring by transmission pin.
Preferably, described pivot is divided into three sections, it is respectively blade positioning section, the section of being screwed, the fixing section of the operation arm of force, described blade positioning section is arranged with special type bearing shell, having screwed screwed retaining ring in the described section of being screwed, the fixing section of the described operation arm of force is fixedly connected with by one end of a cylinder pin with the operation arm of force.
Preferably, the described uniform lug identical with blade number of synchronous operation ring circumferential direction, each lug is provided with for the 2nd through hole through transmission pin, the described internal diameter of the 2nd through hole and the external diameter shrink-fit of transmission pin.
Preferably, described first through hole is distributed on fan center's body circumferential direction, and its quantity is identical with blade number, and described special type bearing shell comprises path section and big footpath section, the internal diameter of described first through hole and the path section external diameter shrink-fit of special type bearing shell.
Preferably, the interior hole of described special type bearing shell and blade positioning section are running fit, and described screwed retaining ring contacts with special type bearing shell but do not compress.
Preferably, described operation arm of force one end is provided with blade axis hole, and 2mm width gap is opened in the side of blade axis hole, and described blade axis hole is enclosed within the fixing section of the operation arm of force of pivot and is located by cylinder pin, and the wide gap of described 2mm is passed through hexagon bolt in and compressed.
Preferably, the described operation arm of force the other end has U-type groove mouth, slides when described transmission pin moves up and down with synchronous operation ring in U-type groove mouth, and the drive operation arm of force rotates.
A blade adjustments method for adjustable turbine-generator units cooling fan, comprises the steps:
1) when air quantity demand is big, synchronous operation ring upwards moves along generator shaft, the same shifting of transmission pin one, sliding in the U-type groove mouth of the operation arm of force while moving on transmission pin, the drive operation arm of force is rotated counterclockwise, and then band rotor blade is rotated counterclockwise, make blade laying angle become big, increase air quantity;
2) when load is less or room temperature is lower, synchronous operation ring moves downwards along generator shaft, reduces blade laying angle, reduces air quantity.
Fan design is become prefabricated structure by the present invention, and blade adopts the mode removably connected to be arranged on fan center's body, and fan center's body is set on generator shaft.
Blade can rotate by axis pivotally, namely changes the installation angle of blade. When generating set runs, the installation angle of blade can be changed according to the operating load of reality, air themperature, make the windage loss of fan reduce as much as possible under the prerequisite meeting generator cooling air quantity requirement, and then improve the operation benefit of generating set.
Between pivot and fan center's body axis hole, special type bearing shell is set and accurately to locate and reduces operational torque. Operation arm of force one end is held tightly on blade pivot, and guarantee facilitates install and adjust under operating reliable prerequisite. The other end is connected by transmission pin with synchronous operation ring. Synchronous operation ring moves along generator shaft axis direction by a small margin, and the drive operation arm of force rotates around blade pivot axis, and then realizes the change of blades installation angle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the schematic diagram of fan centrosome and synchronous operation ring junction in the present invention;
Fig. 3 is the structural representation of synchronous operation ring;
Fig. 4 is the structural representation of blade;
The structural representation of Tu5Shi fan center body;
Fig. 6 is the structural representation of special type bearing shell;
Fig. 7 is the structural representation of screwed retaining ring;
Fig. 8 is the structural representation of the operation arm of force;
Fig. 9 is the structural representation of transmission pin.
In figure: 1. generator shaft, 2. synchronous operation ring, 3. blade, 4. fan center's body, 5. special type bearing shell, 6. screwed retaining ring, hexagon bolt in 7., 8. cylinder pin, 9. operate the arm of force; 10. transmission pin, 11. blade positioning sections, 12. sections of being screwed, the 13. fixing sections of the operation arm of force, 14. lugs, 15. the 2nd through holes, 16. first through holes, 17. path sections, 18. big footpath sections, 19.U type notch, 20. blade axis holes, 21.2mm width gap.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As illustrated in fig. 1 and 2, a kind of adjustable turbine-generator units cooling fan, the blade 3 that comprise fan center's body 4, is connected on fan center's body 4, the operation arm of force 9, transmission pin 10, synchronous operation ring 2, blade 3 one end is provided with pivot, the circumferential direction of fan center's body 4 have some for the first through hole 16 through pivot, pivot is after the first through hole 16, its end is connected by one end of a cylinder pin 8 with the operation arm of force 9, and the other end of the operation arm of force 9 is connected with synchronous operation ring 2 by transmission pin 10. Pivot is divided into three sections, it is respectively blade positioning section 11, the section of being screwed 12, the fixing section 13 of the operation arm of force, blade positioning section 11 is arranged with special type bearing shell 5, having screwed screwed retaining ring 6 in the section of being screwed 12, the fixing section 13 of the operation arm of force is fixedly connected with by one end of a cylinder pin 8 with the operation arm of force 9. The uniform lug 14 identical with blade 3 number of synchronous operation ring 2 circumferential direction, each lug 14 is provided with the internal diameter of the 2nd through hole the 15, two through hole 15 for passing transmission pin 10 and the external diameter shrink-fit of transmission pin 10. First through hole 16 is distributed on fan center's body 4 circumferential direction, and its quantity is identical with blade 3 number, and special type bearing shell 5 comprises the internal diameter of path section 17 and big footpath section 18, first through hole 16 and the path section 17 external diameter shrink-fit of special type bearing shell 5. Interior hole and the blade positioning section 11 of special type bearing shell 5 are running fit, and screwed retaining ring 6 contacts with special type bearing shell 5 but do not compress. The operation arm of force 9 one end is provided with blade axis hole 20, and the wide gap 21 of 2mm is opened in the side of blade axis hole 20, and blade axis hole 20 is enclosed within the fixing section 13 of the operation arm of force of pivot and is located by cylinder pin 8, and the wide gap 21 of 2mm is compressed by hexagon bolt 7 in. The operation arm of force 9 the other end has U-type groove mouth 19, slides when transmission pin 10 moves up and down with synchronous operation ring 2 in U-type groove mouth 19, and the drive operation arm of force 9 rotates.
A blade adjustments method for adjustable turbine-generator units cooling fan, comprises the steps:
1) when air quantity demand is big, synchronous operation ring upwards moves along generator shaft, the same shifting of transmission pin one, sliding in the U-type groove mouth of the operation arm of force while moving on transmission pin, the drive operation arm of force is rotated counterclockwise, and then band rotor blade is rotated counterclockwise, make blade laying angle become big, increase air quantity;
2) when load is less or room temperature is lower, synchronous operation ring moves downwards along generator shaft, reduces blade laying angle, reduces air quantity.
The present invention is when parts design, geometrical dimension and the number of blade is obtained according to Wind Coverage Calculation, in blade one end, pivot is set, pivot is divided into three sections, be respectively positioning section, the end that is screwed, the fixing section of the operation arm of force, beat cylinder pin hole in the fixing section of the operation arm of force in addition, prevent the operation arm of force from altering, as shown in Figure 4.
The uniform hole identical with blade number of synchronous operation ring circumferential direction, the internal diameter in its hole and the external diameter of transmission pin are shrink-fit, as shown in Figure 3.
The uniform hole identical with blade number of fan center's body circumferential direction, the external diameter in its hole and the external diameter of special type bearing shell are shrink-fit, as shown in Figure 5.
Special type bearing shell has two working faces, and in it, hole and blade positioning section are running fit, and the blade that simultaneously makes of accurate locating blades can rotate around blade pivot axis, as shown in Figure 6.
The inner screw thread of screwed retaining ring is connected with blade pivot, and screwed retaining ring contacts with special type bearing shell but do not compress, and is delivered on special type bearing shell by the centrifugal force of blade, does not affect the rotation of blade, as shown in Figure 7 simultaneously.
There is blade axis hole operation arm of force one end, and 2mm width gap is opened in the side in hole, and the operation arm of force the other end has U-type groove mouth, as shown in Figure 8. During installation, the operation arm of force is enclosed within blade pivot and adjusts to the right place, then compress 2mm width gap with interior hexagon bolt, the operation arm of force and blade pivot are fixed.
When air quantity demand is big, synchronous operation ring upwards moves along generator shaft, the same shifting of transmission pin one. Sliding in the U-type groove mouth of the operation arm of force while moving on transmission pin, the drive operation arm of force is rotated counterclockwise (outwards seeing by generator shaft), and then band rotor blade is rotated counterclockwise, and makes blade laying angle become big, increases air quantity. When load is less or room temperature is lower, synchronous operation ring moves downwards along generator shaft, reduces blade laying angle, reduces air quantity.
Above content is further description the present invention done in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple changes or replacement can also be made, all should be considered as belonging to the scope of patent protection that the claim book that the present invention submits to is determined.
Claims (5)
1. an adjustable turbine-generator units cooling fan, it is characterized in that: it comprises fan center's body, the blade that is connected on fan center's body, the operation arm of force, transmission pin, synchronous operation ring, described blade one end is provided with pivot, the circumferential direction of described fan center body have some for the first through hole through pivot, described pivot is after the first through hole, its end is connected by one end of a cylinder pin with the operation arm of force, and the other end of the described operation arm of force is connected with synchronous operation ring by transmission pin; The described uniform lug identical with blade number of synchronous operation ring circumferential direction, each lug is provided with for the 2nd through hole through transmission pin, the described internal diameter of the 2nd through hole and the external diameter shrink-fit of transmission pin; Described pivot is divided into three sections, it is respectively blade positioning section, the section of being screwed, the fixing section of the operation arm of force, described blade positioning section is arranged with special type bearing shell, having screwed screwed retaining ring in the described section of being screwed, the fixing section of the described operation arm of force is fixedly connected with by one end of a cylinder pin with the operation arm of force; The interior hole of described special type bearing shell and blade positioning section are running fit, and described screwed retaining ring contacts with special type bearing shell but do not compress.
2. the adjustable turbine-generator units cooling fan of one according to claim 1, it is characterized in that: described first through hole is distributed on fan center's body circumferential direction, its quantity is identical with blade number, described special type bearing shell comprises path section and big footpath section, the internal diameter of described first through hole and the path section external diameter shrink-fit of special type bearing shell.
3. the adjustable turbine-generator units cooling fan of one according to claim 2, it is characterized in that: described operation arm of force one end is provided with blade axis hole, 2mm width gap is opened in the side of blade axis hole, described blade axis hole is enclosed within the fixing section of the operation arm of force of pivot and is located by cylinder pin, and the wide gap of described 2mm is passed through hexagon bolt in and compressed.
4. the adjustable turbine-generator units cooling fan of one according to claim 3, it is characterized in that: the described operation arm of force the other end has U-type groove mouth, sliding in U-type groove mouth when described transmission pin moves up and down with synchronous operation ring, the drive operation arm of force rotates.
5. the blade adjustments method of a kind of adjustable turbine-generator units cooling fan according to claim 4, it is characterised in that: it comprises the steps:
1) when air quantity demand is big, synchronous operation ring upwards moves along generator shaft, the same shifting of transmission pin one, sliding in the U-type groove mouth of the operation arm of force while moving on transmission pin, the drive operation arm of force is rotated counterclockwise, and then band rotor blade is rotated counterclockwise, make blade laying angle become big, increase air quantity;
2) when load is less or room temperature is lower, synchronous operation ring moves downwards along generator shaft, reduces blade laying angle, reduces air quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510065972.3A CN104632682B (en) | 2015-02-09 | 2015-02-09 | A kind of adjustable turbine-generator units cooling fan and blade adjustments method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510065972.3A CN104632682B (en) | 2015-02-09 | 2015-02-09 | A kind of adjustable turbine-generator units cooling fan and blade adjustments method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632682A CN104632682A (en) | 2015-05-20 |
| CN104632682B true CN104632682B (en) | 2016-06-01 |
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| CN201510065972.3A Active CN104632682B (en) | 2015-02-09 | 2015-02-09 | A kind of adjustable turbine-generator units cooling fan and blade adjustments method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523420B (en) * | 2016-12-30 | 2018-08-31 | 潍柴动力股份有限公司 | A kind of varied angle fan and its angle adjusting method |
| CN107947469A (en) * | 2017-12-21 | 2018-04-20 | 盐城中德劲博机电有限责任公司 | Screw air compressor cooling structure |
| CN115773275B (en) * | 2022-12-23 | 2023-08-01 | 佳木斯电机股份有限公司 | Fan for synchronous motor test |
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| CN1087159A (en) * | 1992-10-14 | 1994-05-25 | Abb.弗拉克特有限公司 | A kind of vane suspension device of adjustable angle |
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| WO2010101426A3 (en) * | 2009-03-05 | 2010-12-02 | 주식회사 에어젠 | Air compressor, and flow control method for an air compressor |
| EP2430291A1 (en) * | 2009-05-15 | 2012-03-21 | Snecma | Unducted propeller including variable pitch blades for a turbine engine |
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| CN103189602A (en) * | 2010-07-30 | 2013-07-03 | 涡轮梅坎公司 | Device for controlling pivoting blades of a turbine engine |
| CN103727062A (en) * | 2013-12-13 | 2014-04-16 | 湖北省风机厂有限公司 | Device for adjusting moving blades of axial flow fan |
| CN203670278U (en) * | 2013-09-22 | 2014-06-25 | 重庆双扬牌电器制造有限公司 | Fan with fan blade angle adjustable |
| CN204511938U (en) * | 2015-02-09 | 2015-07-29 | 浙江富春江水电设备有限公司 | A kind of adjustable turbine-generator units cooling fan |
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2015
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86206411U (en) * | 1986-08-26 | 1987-04-29 | 沈阳风机厂 | Hermetically sealed primary synchronous regulating mechanism |
| EP0545750A1 (en) * | 1991-12-02 | 1993-06-09 | AEROSPATIALE Société Nationale Industrielle | Multiple blade variable pitch rotor, in particular for rear antitorque apparatus of a rotorcraft |
| CN1087159A (en) * | 1992-10-14 | 1994-05-25 | Abb.弗拉克特有限公司 | A kind of vane suspension device of adjustable angle |
| JP2009257142A (en) * | 2008-04-15 | 2009-11-05 | Panasonic Corp | Ceiling fan |
| WO2010101426A3 (en) * | 2009-03-05 | 2010-12-02 | 주식회사 에어젠 | Air compressor, and flow control method for an air compressor |
| EP2430291A1 (en) * | 2009-05-15 | 2012-03-21 | Snecma | Unducted propeller including variable pitch blades for a turbine engine |
| CN103189602A (en) * | 2010-07-30 | 2013-07-03 | 涡轮梅坎公司 | Device for controlling pivoting blades of a turbine engine |
| CN102840164A (en) * | 2012-09-27 | 2012-12-26 | 龙口市汽车风扇离合器厂 | Blade angle-adjustable impeller and fan clutch using same |
| CN203670278U (en) * | 2013-09-22 | 2014-06-25 | 重庆双扬牌电器制造有限公司 | Fan with fan blade angle adjustable |
| CN103727062A (en) * | 2013-12-13 | 2014-04-16 | 湖北省风机厂有限公司 | Device for adjusting moving blades of axial flow fan |
| CN204511938U (en) * | 2015-02-09 | 2015-07-29 | 浙江富春江水电设备有限公司 | A kind of adjustable turbine-generator units cooling fan |
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| CN104632682A (en) | 2015-05-20 |
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