CN109921567A - A kind of large synchronous compensator rotor rotation formula air-makeup system - Google Patents

A kind of large synchronous compensator rotor rotation formula air-makeup system Download PDF

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Publication number
CN109921567A
CN109921567A CN201910371688.7A CN201910371688A CN109921567A CN 109921567 A CN109921567 A CN 109921567A CN 201910371688 A CN201910371688 A CN 201910371688A CN 109921567 A CN109921567 A CN 109921567A
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China
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air
wind
slot
fan
rotor
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CN201910371688.7A
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CN109921567B (en
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王立坤
寇宝泉
孙玉田
张赫
张鲁
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Harbin University of Science and Technology
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Harbin University of Science and Technology
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Publication of CN109921567B publication Critical patent/CN109921567B/en
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Abstract

A kind of large synchronous compensator rotor rotation formula air-makeup system, belongs to technical field of motors.The rotor heating when present invention is in order to solve the problems, such as that phase modifier is encouraged by force in extra-high voltage DC transmission system, it is proposed supplementary air type cooling structure, it is adequately cooled rotor, rotor tip installation is centrifugal to suppress fan and axial-flow type induced draught fan, secondary slot and outlet air pair slot are entered the wind in rotor setting, the radial passage for entering the wind secondary slot and outlet air pair slot wind path docking is realized by the ox horn formula air duct in suspension type cooler, the gas for entering the wind secondary slot radial passage output is exported by ox horn formula air duct to outlet air pair slot radial passage, it plays rotation formula and supplements cold wind action in ox horn formula air duct, it realizes directly cooling to outlet air pair slot hot wind, improve rotor-side cooling effect, suspension type cooler is directly connected to external cooler, phase modifier rotor rotation formula air-makeup system proposed by the present invention enhances the cooling effect of phase modulation machine rotor and excitation winding, Structure is simple, is easy to implement.

Description

A kind of large synchronous compensator rotor rotation formula air-makeup system
Technical field
The present invention relates to a kind of synchronous capacitor rotor air-makeup systems, and in particular to a kind of large synchronous compensator rotor wheel Formula air-makeup system is changed, technical field of motors is belonged to.
Background technique
System for ultra-high voltage transmission large synchronous compensator has fast dynamic response ability and encourages ability, excitation voltage by force Up to 3.5 times of rated values, encouraging electric current by force is 2.5 times of rated exciting currents;In addition, the phase modifier of ultra-high voltage converter station requires motor mistake Loading capability is higher than non-salient pole alternator technical requirements and provides motor overload ability, far more than international standard;Therefore, it is necessary to optimize Rotor cooling structure promotes its overload capacity, guarantees that phase modifier winding will not generate harmful deformation, control end construction temperature rise exists Zone of reasonableness is most important.
The progress of large synchronous compensator rotor ventilation system cooling technology, to the specific important meaning of extra-high voltage direct-current transmission Justice.But in the prior art, due to large synchronous compensator Design of ventilation it is unreasonable caused by motor encourage by force and quickly dynamic The excessively high problem of rotor-side temperature still remains in adjustment process.
Summary of the invention
It has been given below about brief overview of the invention, in order to provide about the basic of certain aspects of the invention Understand.It should be appreciated that this summary is not an exhaustive overview of the invention.It is not intended to determine pass of the invention Key or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides certain concepts in simplified form, Taking this as a prelude to a more detailed description discussed later.
In consideration of it, the invention proposes it is a kind of efficiently, reduce rapidly large-scale phase modifier rotor-side temperature rise rotation formula and mend wind system System, to solve since motor is encouraged by force and quickly in Dynamic Regulating Process caused by large synchronous compensator Design of ventilation is unreasonable The excessively high problem of rotor-side temperature, is adequately cooled rotor, and rotor tip installation is centrifugal to suppress fan and axis Secondary slot and outlet air pair slot are entered the wind in streaming induced draught fan, rotor setting, and the radial passage for entering the wind secondary slot and outlet air pair slot passes through suspension Wind path docking is realized in ox horn formula air duct in formula cooler, and the gas for entering the wind secondary slot radial passage output is passed through ox horn formula air duct To outlet air pair slot radial passage, ox horn formula air duct plays rotation formula and supplements cold wind action for output, realizes to outlet air pair slot heat Wind is directly cooling, improves rotor-side cooling effect.
The technological means that the present invention takes is:
A kind of large synchronous compensator rotor rotation formula air-makeup system, including stator core, shaft, centrifugal suppress wind Fan, external cooler, End winding, out frame and rotor end bell, the stator core are mounted in out frame, shaft peace In stator core, and air gap is constituted between the two, rotor bushing retaining ring in shaft, End winding is installed on stator core On, external cooler is installed on the outside of out frame;
The rotation formula air-makeup system further includes that suspension type cooler, axial-flow type induced draught fan, linker and fan keep out the wind Ring is equipped in shaft and centrifugal suppresses fan, axial-flow type induced draught fan and fan air baffle ring, axial-flow type induced draught fan quilt cover Inside fan air baffle ring, the centrifugal outside suppressed fan and be placed in fan air baffle ring, suspension type cooler is placed in stator core In air gap between shaft, suspension type cooler is directly connected to the external cooler of stator core by linker;
The secondary slot of air inlet and outlet air pair slot are offered in shaft, are entered the wind secondary slot and are not connected in shaft with outlet air pair slot, enter the wind Secondary slot includes entering the wind secondary slot axial ducts and entering the wind secondary slot radial passage, and outlet air pair slot includes outlet air pair slot axial ducts and outlet air Secondary slot radial passage enters the wind secondary slot axial ducts and is connected with secondary slot radial passage is entered the wind, outlet air pair slot axial ducts and outlet air Secondary slot radial passage is connected, and stator radial ducts is offered in stator core, ox horn formula wind is arranged in suspension type cooler Secondary slot radial passage is entered the wind in road, the cooling medium in outlet air pair slot radial passage passes through ox horn formula air duct in suspension type cooler Forming circuit, centrifugal to suppress fan cooling wind is partially pressed into motor different piece, cooling gas flows to End winding all the way, cold But gas enters external cooler after flowing into the stator radial ducts of stator core on the outside of the suspension type cooler;Another way is cold But secondary slot axial ducts are entered the wind in gas flow, and cooling gas is sucked out axial-flow type induced draught fan by outlet air pair slot axial ducts, from The cooling wind that core type suppresses fan extrusion is isolated with the cooling wind that axial-flow type induced draught fan is sucked out by fan air baffle ring.
Further: the suspension type cooler is thin core structure, and the inlet air open area in ox horn formula air duct is greater than Vent area is entered the wind secondary slot radial passage and is aligned with the air intake vent in ox horn formula air duct, outlet air pair slot radial passage and ox horn formula wind The air outlet in road is aligned.Cooling gas by enter the wind secondary slot axial ducts through air inlet secondary slot radial passage directly by hot wind get rid of into The air intake vent in the ox horn formula air duct of suspension type cooler, hot wind is after suspension type cooler is cooling, from suspension type cooler The air outlet in ox horn formula air duct flows out, and the cold wind of outflow enters back into outlet air pair slot radial passage, cools down to rotor, most pass through afterwards The outflow of outlet air pair slot axial ducts, axially, hot wind is directly cooling by suspension type cooler in ox horn formula air duct, Cold wind after cooling is constantly thrown out of, and the cold wind thrown away is directly added into shaft side, and cooling gas is continuous in shaft side Rotation circulation, without stator core, directly the cooling gas between stator core and shaft is isolated for suspension type cooler, fixed Sub- iron core and shaft do not have the direct exchange of cooling gas.
Further: entering the wind secondary slot axial ducts and become narrow gradually along axial direction, outlet air pair slot axial ducts gradually become along axial direction It is wide.
Further: ox horn formula air duct is 30-40 along axial quantity.
Further: convex lug is arranged in ox horn formula air duct inner wall in the suspension type cooler.
Further: the rotation formula air-makeup system further includes air gap air baffle ring, and air gap air baffle ring is mounted on rotor end bell On.Air gap air baffle ring is hindered from the centrifugal stator radial direction for suppressing fan and pressing toward suspension type cooler outside and flowing into stator core Ventilating duct cooling gas is diverted to the outer surface of shaft.
Present invention effect achieved are as follows:
Large-scale phase modifier is encouraging by force the ventilation cooling system relatively high, traditional with fast dynamic response process temperature of rotor Seriously limit the safe and stable operation of large-scale phase modifier, the progress of large synchronous compensator rotor ventilation system cooling technology, To the specific important meaning of extra-high voltage direct-current transmission.Therefore, the present invention is logical towards UHV Transmission Engineering phase modulation machine rotor Air cooling system there are the problem of and a kind of large synchronous compensator rotor rotation formula air-makeup system for proposing, obtain rotor To sufficient cooling, rotor tip installation is centrifugal to suppress fan and axial-flow type induced draught fan, and rotor setting is entered the wind secondary slot and gone out Wind path pair is realized by the ox horn formula air duct in suspension type cooler in wind pair slot, the radial passage for entering the wind secondary slot and outlet air pair slot It connects, the gas for entering the wind secondary slot radial passage output is exported by ox horn formula air duct to outlet air pair slot radial passage, ox horn formula wind Road plays rotation formula and supplements cold wind action, realizes that large-scale phase modulation machine rotor throws away hot wind and is rapidly cooled, and in time as cold Wind fills into rotor again, effectively enhances the ability that cooling gas takes away phase modifier rotor-side heat, reduces phase modifier quick Dynamic response and the by force maximum temperature of rotor and excitation winding when encouraging, reduce phase modifier rotor-side thermal deformation, improve rotor-side Cooling effect.
Detailed description of the invention
Fig. 1 is a kind of axial sectional view of large synchronous compensator rotor rotation formula air-makeup system of the present invention;
Fig. 2 is ox horn formula air channel structure schematic diagram;
In figure: the secondary slot of 1- air inlet, 2- outlet air pair slot, 3- suspension type cooler, 4- stator core, 5- shaft, 6- are centrifugal Suppress fan, 7- axial-flow type induced draught fan, 8- external cooler, 9- linker, 10- End winding, 11- stator radial ventilation Road, 12- air gap, 13- fan air baffle ring, 14- air gap air baffle ring, 15- out frame, 16- rotor end bell, 1- enter the wind secondary slot, 1-1 Enter the wind secondary slot axial ducts, 1-2 enters the wind secondary slot radial passage, 2- outlet air pair slot, 2-1 outlet air pair slot axial ducts, 2-2 outlet air pair Slot radial passage;
Arrow show a kind of flowing side of cooling gas in large synchronous compensator rotor rotation formula air-makeup system in figure To.
Specific embodiment
For clarity and conciseness, all features of actual implementation mode are not described in the description.However, should Understand, much decisions specific to embodiment must be made, during developing any this practical embodiments so as to reality The objectives of existing developer, for example, meeting restrictive condition those of related to system and business, and these restrictive conditions It may be changed with the difference of embodiment.In addition, it will also be appreciated that although development is likely to be very multiple It is miscellaneous and time-consuming, but for the those skilled in the art for having benefited from the disclosure of invention, this development is only example Capable task.
Here, also it should be noted is that, in order to avoid having obscured the present invention because of unnecessary details, applying for text Illustrate only in part with closely related apparatus structure and/or processing step according to the solution of the present invention, and be omitted and this The little other details of inventive relationship.
Embodiment: referring to Fig. 1 and Fig. 2, a kind of large synchronous compensator rotor rotation formula air-makeup system of present embodiment Including entering the wind secondary slot 1, outlet air pair slot 2, suspension type cooler 3, stator core 4, shaft 5, centrifugal suppressing fan 6, axial-flow type Induced draught fan 7, external cooler 8, linker 9, End winding 10, stator radial ducts 11, air gap 12, fan air baffle ring 13, air gap air baffle ring 14, out frame 15, rotor end bell 16, entering the wind secondary slot 1 includes entering the wind secondary slot axial ducts 1-1, and air inlet is secondary Slot radial passage 1-2, outlet air pair slot 2 include outlet air pair slot axial ducts 2-1, outlet air pair slot radial passage 2-2, enter the wind secondary fluted shaft It is connected to air duct 1-1 with air inlet pair slot radial passage 1-2, outlet air pair slot axial ducts 2-1 and outlet air pair slot radial passage 2-2 It is connected, enters the wind secondary slot 1 and be not connected in shaft with outlet air pair slot 2, fan air baffle ring 13 is installed, axial-flow type is inhaled in shaft 5 Wind fan 7 is enclosed in inside fan air baffle ring 13, and air gap air baffle ring 14 is mounted on rotor end bell 16;Stator core 4 is mounted on In out frame 15, stator radial ducts 11 is connected with external cooler 8.
In addition, embodiment is described with reference to Fig. 1 according to a kind of implementation, a kind of large size described in present embodiment Synchronous capacitor rotor rotation formula air-makeup system, it is centrifugal suppress fan 6 by cooling wind be divided into multichannel indentation motor different piece, Cooling gas flows to End winding 10 all the way, and cooling gas flow direction enters the wind secondary slot 1 all the way, and cooling gas is cooling in suspension type all the way On the outside of device 3 flow into stator core 4 stator radial ducts 11, axial-flow type induced draught fan 7 by the cooling gas of outlet air pair slot 2 from Outlet air pair slot axial ducts 2-1 is sucked out, and the centrifugal cooling wind for suppressing the extrusion of fan 6 is sucked out cold with axial-flow type induced draught fan 7 But wind is isolated by fan air baffle ring 13.
In addition, embodiment is described with reference to Fig. 1 according to a kind of implementation, a kind of large size described in present embodiment Synchronous capacitor rotor rotation formula air-makeup system enters the wind the physically barrier completely in shaft 4 of secondary slot 1 and outlet air pair slot 2, It enters the wind secondary slot 1 and outlet air pair slot is non-interconnected structure, internal cooling gas is the ox horn formula air duct by suspension type cooler 3 3-1 realizes the connection of cooling circulation, and air inlet pair slot axial ducts 1-1 becomes narrow gradually along axial direction, outlet air pair slot axial ducts 2- 1 gradually broadens along axial direction.
In addition, illustrating present embodiment, one kind described in present embodiment in conjunction with Fig. 1, Fig. 2 according to a kind of implementation Large synchronous compensator rotor rotation formula air-makeup system, suspension type cooler 3 be thin core structure, suspension type cooler 3 as In air gap 12 between stator core 4 and shaft 5, ox horn formula air duct 3-1 is set in suspension type cooler 3, it is radial to enter the wind secondary slot Cooling medium in air duct 1-2, outlet air pair slot radial passage 2-2 is formed back by ox horn formula air duct 3-1 in suspension type cooler 3 Road, cooling gas are directly got rid of hot wind into suspension type by air inlet pair slot radial passage 1-2 by air inlet pair slot axial ducts 1-1 The air intake vent 3-1-1 of 3 ox horn formula air duct 3-1 of cooler, hot wind is after suspension type cooler 3 is cooling, from suspension type cooler 3 The air outlet 3-1-2 of ox horn formula air duct 3-1 flows out, and the cold wind of outflow enters back into outlet air pair slot radial passage 2-2, carries out to rotor It is cooling, it is most flowed out afterwards through outlet air pair slot axial ducts 2-1, axially, hot wind passes through suspension in ox horn formula air duct 3-1 Formula cooler 3 is directly cooling, and cold wind after cooling is constantly thrown out of, and the cold wind thrown away is directly added into 5 side of shaft, and cooling Gas is in the continuous rotation circulation in 5 side of shaft, and without stator core 4, suspension type cooler 3 directly by stator core 4 and turns Cooling gas isolation between axis 5, the direct exchange of the not no cooling gas of stator core 4 and shaft 5.
In addition, illustrating present embodiment, one kind described in present embodiment in conjunction with Fig. 1, Fig. 2 according to a kind of implementation Large synchronous compensator rotor rotation formula air-makeup system, ox horn formula air duct 3-1 air intake vent 3-1-1 area are greater than air outlet 3-1-2 Area is 30-40 along axial quantity, and air inlet pair slot radial passage 1-2 is aligned with ox horn formula air duct 3-1 air intake vent 3-1-1, goes out Wind pair slot radial passage 2-2 is aligned with ox horn formula air duct 3-1 air outlet 3-1-2.
In addition, illustrating present embodiment, one kind described in present embodiment in conjunction with Fig. 1, Fig. 2 according to a kind of implementation Large synchronous compensator rotor rotation formula air-makeup system, convex lug 3- is arranged in ox horn formula air duct 3-1 inner wall in suspension type cooler 3 2, suspension type cooler 3 is directly connected to the external cooler 8 of stator core by linker 9.
In addition, embodiment is described with reference to Fig. 1 according to a kind of implementation, a kind of large size described in present embodiment Synchronous capacitor rotor rotation formula air-makeup system, air gap air baffle ring 14 hinder to be pressed from centrifugal fan 6 of suppressing toward suspension type cooling The outside of device 3 and 11 cooling gas of stator radial ducts for flowing into stator core 4 is diverted to the outer surface of shaft 5.
Although disclosed embodiment is as above, its content is only to facilitate understand technical side of the invention Case and the embodiment used, are not intended to limit the present invention.Any those skilled in the art to which this invention pertains, not Under the premise of being detached from disclosed core technology scheme, any modification and change can be made in form and details in implementation Change, but protection scope defined by the present invention, the range that the appended claims that must still be subject to limits.

Claims (6)

1. a kind of large synchronous compensator rotor rotation formula air-makeup system, including stator core (4), shaft (5), centrifugal suppress Fan (6), external cooler (8), End winding (10), out frame (15) and rotor end bell (16), the stator core (4) It is mounted in out frame (15), shaft (5) is mounted in stator core (4), and constitutes air gap (12) between the two, shaft (5) rotor bushing retaining ring (16) on, End winding (10) are installed on stator core (4), and external cooler (8) is installed on stator The outside of base (15);
It is characterized by: the rotation formula air-makeup system further includes suspension type cooler (3), axial-flow type induced draught fan (7), connection Device (9) and fan air baffle ring (13), be equipped on shaft (5) it is centrifugal suppress fan (6), axial-flow type induced draught fan (7) and Fan air baffle ring (13), axial-flow type induced draught fan (7) are enclosed in fan air baffle ring (13) inside, and centrifugal fan (6) of suppressing is set In the outside of fan air baffle ring (13), suspension type cooler (3) is placed in the air gap (12) between stator core (4) and shaft (5) In, suspension type cooler (3) is directly connected to the external cooler (8) of stator core (4) by linker (9);
The secondary slot (1) of air inlet and outlet air pair slot (2) are offered in shaft (5), enter the wind secondary slot (1) and outlet air pair slot (2) in shaft It is not connected to, enters the wind secondary slot (1) including entering the wind secondary slot axial ducts (1-1) and entering the wind secondary slot radial passage (1-2), outlet air pair slot (2) include outlet air pair slot axial ducts (2-1) and outlet air pair slot radial passage (2-2), enter the wind secondary slot axial ducts (1-1) and into Wind pair slot radial passage (1-2) is connected, and outlet air pair slot axial ducts (2-1) are connected with outlet air pair slot radial passage (2-2), It is offered in stator core (4) stator radial ducts (11), ox horn formula air duct (3-1) is set in suspension type cooler (3), into Cooling medium in wind pair slot radial passage (1-2), outlet air pair slot radial passage (2-2) passes through suspension type cooler (3) interior ox Angie type air duct (3-1) forming circuit, centrifugal to suppress fan (6) cooling wind is partially pressed into motor different piece, cooling air all the way Body flows to End winding (10), and cooling gas flows into the stator radial ventilation of stator core (4) on the outside of suspension type cooler (3) Road (11) enters external cooler (8) afterwards;Another way cooling gas flow direction enters the wind secondary slot axial ducts (1-1), axial-flow type air draught Fan (7) by cooling gas by outlet air pair slot axial ducts (2-1) be sucked out, it is centrifugal suppress fan (6) extrusion cooling wind with The cooling wind that axial-flow type induced draught fan (7) is sucked out is isolated by fan air baffle ring (13).
2. a kind of large synchronous compensator rotor rotation formula air-makeup system according to claim 1, it is characterised in that: described Suspension type cooler (3) be thin core structure, air intake vent (3-1-1) area in ox horn formula air duct (3-1) is greater than air outlet (3- 1-2) area is entered the wind secondary slot radial passage (1-2) and is aligned with the air intake vent (3-1-1) in ox horn formula air duct (3-1), outlet air pair slot diameter It is aligned to air duct (2-2) with the air outlet (3-1-2) in ox horn formula air duct (3-1).
3. a kind of large synchronous compensator rotor rotation formula air-makeup system according to claim 2, it is characterised in that: air inlet Secondary slot axial ducts (1-1) become narrow gradually along axial direction, and outlet air pair slot axial ducts (2-1) gradually broaden along axial direction.
4. a kind of large synchronous compensator rotor rotation formula air-makeup system according to claim 3, it is characterised in that: ox horn Formula air duct (3-1) is 30-40 along axial quantity.
5. a kind of large synchronous compensator rotor rotation formula air-makeup system according to claim 4, it is characterised in that: described Convex lug (3-2) is arranged in suspension type cooler (3) interior ox horn formula air duct (3-1) inner wall.
6. a kind of -5 any large synchronous compensator rotor rotation formula air-makeup system, feature exist according to claim 1 In: the rotation formula air-makeup system further includes air gap air baffle ring (14), and air gap air baffle ring (14) is mounted on rotor end bell (16).
CN201910371688.7A 2019-05-06 2019-05-06 Rotor alternate type air supplement system of large synchronous phase modulator Expired - Fee Related CN109921567B (en)

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CN201910371688.7A CN109921567B (en) 2019-05-06 2019-05-06 Rotor alternate type air supplement system of large synchronous phase modulator

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CN201910371688.7A CN109921567B (en) 2019-05-06 2019-05-06 Rotor alternate type air supplement system of large synchronous phase modulator

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111046539A (en) * 2019-11-27 2020-04-21 上海电气电站设备有限公司 Water-cooled rotor forced excitation temperature rise calculation method based on instantaneous movement method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111046539A (en) * 2019-11-27 2020-04-21 上海电气电站设备有限公司 Water-cooled rotor forced excitation temperature rise calculation method based on instantaneous movement method
CN111046539B (en) * 2019-11-27 2023-09-26 上海电气电站设备有限公司 Water-cooled rotor forced excitation temperature rise calculation method based on instantaneous movement method

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