CN201717736U - Large air-cooling turbogenerator with circumferential mixed ventilation cooling structure - Google Patents
Large air-cooling turbogenerator with circumferential mixed ventilation cooling structure Download PDFInfo
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- CN201717736U CN201717736U CN2010202674241U CN201020267424U CN201717736U CN 201717736 U CN201717736 U CN 201717736U CN 2010202674241 U CN2010202674241 U CN 2010202674241U CN 201020267424 U CN201020267424 U CN 201020267424U CN 201717736 U CN201717736 U CN 201717736U
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Abstract
The utility model provides a large air-cooling turbogenerator with a circumferential mixed ventilation cooling structure, belonging to the field of motor technology. The large air-cooling turbogenerator solves the problem that the cooling technology of the existing turbogenerator can not be compatible with the technology of increasing the single machine capacity. The large air-cooling turbogenerator comprises a stator, a rotor and a casing, wherein an air clearance is arranged between the external round surface of the rotor and the internal round surface of the stator; the stator is arranged in the casing; the large air-cooling turbogenerator also comprises four axial rubber clapboards and coolers; the four axial rubber clapboards are uniformly arranged between the internal round surface of the casing and the external round surface of the stator along the circumferential direction, thus forming two relative cold air areas and two relative hot air areas; and the two relative hot air areas are communicated with the inlet of the cooler. The circumferential mixed ventilation cooling structure is used for cooling the large air-cooling turbogenerator.
Description
Technical field
The utility model relates to a kind of large air-cooled turbine generator with circumferential mixed ventilation cooling structure, belongs to technical field of motors.
Background technology
For the temperature of each parts in the turbo generator is remained within the limit that insulating material and metal material allow, coolant around the loss of each parts must be delivered to the form of heat during the turbo generator operation is with the cooling of effective enforcement to each parts in the turbo generator.To the raising of turbo generator single-machine capacity, owing to be subjected to the restriction of stator transportation clearance, rotor forging and rotor bow, the main raising electromagnetic parameter that relies on reaches in design.Again because also there is saturation problem in permeability magnetic material, so the raising of turbo generator single-machine capacity mainly realizes by increasing its specific electric load.Increase specific electric load and then increased line bar copper damage, cause the temperature of coil to raise, even surpass rated temperature-rise.For this reason, need to adopt a kind of more effective cooling technology, improve the specific heat load of turbo generator, thus with the temperature rise control of each parts of turbo generator in allowed band.
Summary of the invention
The purpose of this utility model is for the cooling technology that solves existing turbo generator and the problem that develops skill and can not take into account simultaneously of its single-machine capacity, and a kind of large air-cooled turbine generator with circumferential mixed ventilation cooling structure is provided.
The utility model comprises stator, rotor and casing, be air gap between the outer round surface of rotor and the internal circular surfaces of stator, described stator covers within the casing, it also comprises four axial rubber separators and cooler, described four axial rubber separators along the circumferential direction evenly are arranged between the outer round surface of the internal circular surfaces of casing and stator, form two hot blast districts that relative cold wind district is relative with two, two relative hot blast districts are connected with the inlet of cooler.
It also comprises four air gap plate washers, and the stator segmental arc pairing air gap section corresponding with the cold wind district is cold wind district air gap segmental arc, has two cold wind district air gap segmental arcs, and two ends of each cold wind district air gap segmental arc are provided with an air gap plate washer respectively.
It also comprises four ventilation channel-section steels, described four ventilation channel-section steels evenly are provided with along the stator circumference direction, described four ventilation channel-section steels are divided into four zones with stator, and the segmental arc of the stator outer wall that described four zones are corresponding is corresponding with the residing segmental arc in cold wind district and hot blast district respectively.
It also comprises four fan-shaped deep beads, and the two ends in described each hot blast district are provided with a fan-shaped deep bead respectively.
The utility model has the advantages that: the maximum temperature of large air-cooled turbine generator has more present stator strand hot blast zone position, the utility model is guaranteeing under the constant prerequisite of fan power, utilize of the acceleration of the centrifugal force of rotor rotation generation to the tangential flow velocity of air gap, improved the wind speed in the stator ventilation ducts, can reduce the maximum temperature of air-cooled steam turbine generator stator thus, improve the cooling effect of motor stator radial ventilation ditch.The utility model can guarantee the safe and reliable operation of large air-cooled turbine generator, becomes the prerequisite of turbo generator to bigger capacity development.
Usually the rotor speed of synchronous generator is 3000r/m, the cooling system that the utility model proposed, the tangential wind speed that utilizes the rotor rotation to produce increases the wind speed that enters hot blast district stator radial ventilation ditch, can guarantee absolute value is bigger in the stator core radial ventilation ditch gas flow rate and big coefficient of heat transfer.Simultaneously, reaching under the situation of identical wind speed, adopting this scheme, can reduce the power that fan consumes, reducing draft loss, improving the efficient and the power factor of generator.Compare with the turbo generator of tradition ventilation structure, the utility model adopted quarter sawing two to air cooling system, have material-saving, energy-conservation, a safe and reliable advantage.
Description of drawings
Fig. 1 is a radial structure schematic diagram of the present utility model; Fig. 2 is an axial arrangement schematic diagram of the present utility model; Fig. 3 is an aeration structure schematic diagram of the present utility model.
Embodiment
Embodiment one: below in conjunction with Fig. 1, Fig. 2 and Fig. 3 illustrate present embodiment, present embodiment comprises stator 1, rotor 2 and casing 3, it between the internal circular surfaces of the outer round surface of rotor 2 and stator 1 air gap, described stator 1 covers within the casing 3, it also comprises four axial rubber separators 4 and cooler 9, described four axial rubber separators 4 along the circumferential direction evenly are arranged between the outer round surface of the internal circular surfaces of casing 3 and stator 1, forming hot blast district 6, two relative hot blast districts 6 relative with two, two relative cold wind districts 5 is connected with the inlet of cooler 9.
Present embodiment will adopt special oil resistant, the synthetic rubber bar dividing plate of anti-electricity along the circumferential direction to be divided into four parts between the outer round surface of the internal circular surfaces of casing 3 and stator 1, form four vertical air compartments, two hot blast districts 6 that relative cold wind district 5 is relative with two form alternately arranging of cold wind district 5 and hot blast district 6.
Embodiment two: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, the difference of present embodiment and execution mode one is that it also comprises four air gap plate washers, the stator segmental arc pairing air gap section corresponding with cold wind district 5 is cold wind district air gap segmental arc 8-1, have two cold wind district air gap segmental arc 8-1, two ends of each cold wind district air gap segmental arc 8-1 are provided with an air gap plate washer respectively.Other composition and annexation are identical with execution mode one.
The setting of air gap plate washer, can avoid the air quantity of air gap porch that the cold wind district is exerted an influence, even the effect that causes air-flow to recharge, simultaneously at hot blast district air gap segmental arc 8-2, the air quantity of inlet air gap mixes with the air quantity of rotor outlet, the outlet of cold wind district, can play and reduce the effect that enters hot blast district inlet wind-warm syndrome.
Operation principle:
The cooling air that present embodiment adopts is gone into cold wind district 5 by machine room through filter is laggard, flows to the fan that is contained on 2 of the rotors again, is divided into two-way then.One road stator 1 winding overhang of flowing through, another road rotor 2 secondary grooves of flowing through; Adopt air gap plate washer 7 that air gap segmental arc 8 is blocked, the air quantity of this zone and air gap porch is separated, wind path as shown in Figure 2.The cooling air that enters stator 1 end cools off its end earlier, this cooling air moves along cold wind district 5 then, at first enter the stator radial ventilation ditch 1-1 in cold wind district 5 through the air in cold wind district 5, and then enter in the power generator air gap, this air with enter the stator tooth district after the gas of coming in the gas and the air gap porch of rotor direction of rotation mixes in air gap, come out from the stator 1 radial ventilation ditch 1-1 exit in hot blast district 6,6 discharges from the hot blast district again feed cooler 9 again and cool off again.Motor adopts ventilation from sub-slot in the present embodiment, and gas enters secondary groove from rotor 2 two ends, discharges by radial ventilation ditch 1-1 then and enters air gap.Because the influence of rotor 2 turning efforts, the gas of rotor direction of rotation has certain tangential velocity with respect to stator.
Embodiment three: present embodiment is described below in conjunction with Fig. 1, present embodiment and execution mode one or twos' difference is that it also comprises four ventilation channel-section steels 7, described four ventilation channel-section steels 7 evenly are provided with along stator 1 circumferencial direction, described four ventilation channel-section steels 7 are divided into four zones with stator 1, and the segmental arc of stator 1 outer wall that described four zones are corresponding is corresponding with cold wind district 5 and hot blast district 6 residing segmental arcs respectively.Other composition and annexation are identical with execution mode one or two.
Present embodiment adopts four ventilation channel-section steels 7 that stator 1 is divided into four identical zones on circumference in stator 1 zone, and stator 1 is formed the petal type layout.This petal type layout structure, stator 1 iron core zone is separated in a circumferential direction, prevent that the cold wind and the hot blast that enter iron core from influencing each other, can reduce the eddy current that fluid flow-disturbing effect mobile owing to complexity in circumferential direction and stator slot produces in addition, reduce wind moussing loss.
Embodiment four: the difference of present embodiment and execution mode three is that it also comprises four fan-shaped deep beads, and the two ends in described each hot blast district 6 are provided with a fan-shaped deep bead respectively.Other composition and annexation are identical with execution mode three.
In the motor end, utilize fan-shaped deep bead in the present embodiment, 6 two ends, hot blast district are blocked, the gas that can prevent hot blast district 6 outlet mixes with the refrigerating gas of the inlet in cold wind district 5 and reduces the cooling effect in cold wind district 5.
Claims (4)
1. large air-cooled turbine generator with circumferential mixed ventilation cooling structure, it comprises stator (1), rotor (2) and casing (3), be air gap between the internal circular surfaces of the outer round surface of rotor (2) and stator (1), described stator (1) covers within the casing (3), it is characterized in that: it also comprises four axial rubber separators (4) and cooler (9), described four axial rubber separators (4) along the circumferential direction evenly are arranged between the outer round surface of the internal circular surfaces of casing (3) and stator (1), form two hot blast districts (6) that relative cold wind district (5) is relative with two, two relative hot blast districts (6) are connected with the inlet of cooler (9).
2. the large air-cooled turbine generator with circumferential mixed ventilation cooling structure according to claim 1, it is characterized in that: it also comprises four air gap plate washers, the pairing air gap section of the stator segmental arc corresponding with cold wind district (5) is a cold wind district air gap segmental arc (8-1), have two cold wind district air gap segmental arcs (8-1), two ends of each cold wind district air gap segmental arc (8-1) are provided with an air gap plate washer respectively.
3. the large air-cooled turbine generator with circumferential mixed ventilation cooling structure according to claim 1 and 2, it is characterized in that: it also comprises four ventilation channel-section steels (7), described four ventilation channel-section steels (7) evenly are provided with along stator (1) circumferencial direction, described four ventilation channel-section steels (7) are divided into four zones with stator (1), and the segmental arc of stator (1) outer wall that described four zones are corresponding is corresponding with the residing segmental arc in cold wind district (5) and hot blast district (6) respectively.
4. the large air-cooled turbine generator with circumferential mixed ventilation cooling structure according to claim 3 is characterized in that: it also comprises four fan-shaped deep beads, and the two ends in described each hot blast district (6) are provided with a fan-shaped deep bead respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202674241U CN201717736U (en) | 2010-07-22 | 2010-07-22 | Large air-cooling turbogenerator with circumferential mixed ventilation cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202674241U CN201717736U (en) | 2010-07-22 | 2010-07-22 | Large air-cooling turbogenerator with circumferential mixed ventilation cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717736U true CN201717736U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202674241U Expired - Lifetime CN201717736U (en) | 2010-07-22 | 2010-07-22 | Large air-cooling turbogenerator with circumferential mixed ventilation cooling structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN201717736U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860119A (en) * | 2010-07-22 | 2010-10-13 | 哈尔滨理工大学 | Large air-cooled turbo-generator with circumferential mixed ventilation cooling structure |
| CN110601393A (en) * | 2019-08-14 | 2019-12-20 | 浙江大学 | Electric machine |
| CN110838765A (en) * | 2019-11-28 | 2020-02-25 | 国网江苏省电力有限公司检修分公司 | Stator cooling system of synchronous phase modulator |
-
2010
- 2010-07-22 CN CN2010202674241U patent/CN201717736U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860119A (en) * | 2010-07-22 | 2010-10-13 | 哈尔滨理工大学 | Large air-cooled turbo-generator with circumferential mixed ventilation cooling structure |
| CN110601393A (en) * | 2019-08-14 | 2019-12-20 | 浙江大学 | Electric machine |
| CN110601393B (en) * | 2019-08-14 | 2024-03-12 | 浙江大学 | Motor with a motor housing |
| CN110838765A (en) * | 2019-11-28 | 2020-02-25 | 国网江苏省电力有限公司检修分公司 | Stator cooling system of synchronous phase modulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110119 Effective date of abandoning: 20111207 |