CN216530868U - Ventilation structure of steam turbine generator base - Google Patents
Ventilation structure of steam turbine generator base Download PDFInfo
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- CN216530868U CN216530868U CN202122769654.9U CN202122769654U CN216530868U CN 216530868 U CN216530868 U CN 216530868U CN 202122769654 U CN202122769654 U CN 202122769654U CN 216530868 U CN216530868 U CN 216530868U
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Abstract
A ventilation structure of a steam turbine generator base comprises a base, a ventilation mechanism and a generator stator iron core fixedly arranged in the middle of the ventilation mechanism; the ventilation mechanism comprises an annular cylinder; the annular cylinder is fixedly arranged at the top of the base; the stator core of the generator is coaxially and rotatably arranged on the inner side of the annular cylinder; a first cylindrical partition plate and a second cylindrical partition plate are coaxially and fixedly arranged in the inner cavity of the annular cylinder; the first cylindrical partition plate and the second cylindrical partition plate divide the inner cavity of the annular cylinder into a heat return cavity, a diffusion cavity and a heat absorption cavity from outside to inside in sequence; the diffusion cavity is communicated with the outside of the air inlet pipe; the diffusion cavity is communicated with the heat absorption cavity; the heat absorption cavity is communicated with the heat regeneration cavity; the heat absorption cavity is communicated with the outside through an air outlet pipe; the utility model can cool the generator base integrally and simultaneously, so that the temperature distribution of the turbonator is more uniform, the quick replacement of hot air and cold air can be realized, the action time of the cold air is prolonged, and the cooling effect is more obvious.
Description
Technical Field
The utility model relates to the technical field of steam turbine generator bases, in particular to a ventilation structure of a steam turbine generator base.
Background
The turbine generator is driven by a turbine, superheated steam generated by a boiler enters the turbine to expand and do work, blades rotate to drive the generator to generate power, the steam after doing work is sent back to the boiler for recycling through a condenser, a circulating water pump, a condensate pump, a feed water heating device and the like, and a base of the turbine generator is generally provided with a ventilation structure and is connected with an external cooler to realize air cooling and heat dissipation of the turbine generator.
Most of the existing ventilation structures of the steam turbine generator base only have one ventilation layer, and an inlet end and an outlet end are separately arranged on two sides; after entering from the inlet end, the cold air flows in the ventilation structure, absorbs the heat of the inner wall of the steam turbine, and is finally discharged from the outlet end at the other end, so that the heat is taken away; however, when the cold air flows in the ventilation structure, the cold air absorbs heat slowly, so that the temperature is increased slowly, and when the rear half section of the ventilation structure is reached, the temperature of the cold air is high possibly, so that the cooling effect of the front half section of the ventilation structure is good, but the cooling effect of the rear half section is reduced, the temperature distribution of the turbonator is uneven, and the cooling effect is poor; therefore, there is a need for a ventilation structure that can cool the entire interior of a steam turbine generator at the same time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a ventilating structure of a steam turbine generator base, which aims to solve the problems in the prior art.
A ventilation structure of a steam turbine generator base comprises a base, a ventilation mechanism and a generator stator iron core fixedly arranged in the middle of the ventilation mechanism; the ventilation mechanism comprises an annular cylinder; the annular cylinder is fixedly arranged at the top of the base; the generator stator core is coaxially and rotatably arranged on the inner side of the annular cylinder; a first cylindrical partition plate and a second cylindrical partition plate are coaxially and fixedly arranged in the inner cavity of the annular cylinder; the first cylindrical partition plate and the second cylindrical partition plate divide the inner cavity of the annular cylinder into a heat return cavity, a diffusion cavity and a heat absorption cavity from outside to inside in sequence; the diffusion cavity is communicated with the outside of the air inlet pipe; the diffusion cavity is communicated with the heat absorption cavity; the heat absorption cavity is communicated with the heat regeneration cavity; the heat return cavity is communicated with the outside through an air outlet pipe.
Preferably, a plurality of through holes are formed in the side wall of the second cylindrical partition plate at equal intervals; the diffusion cavity is communicated with the heat absorption cavity through the through hole.
Preferably, a plurality of over-cavity pipes are fixedly arranged in the diffusion cavity; one end of the over-cavity pipe penetrates through the first cylindrical partition plate and is communicated with the heat regeneration cavity, and the other end of the over-cavity pipe penetrates through the second cylindrical partition plate and is communicated with the heat absorption cavity; the over-cavity pipe is fixedly and hermetically connected with the first cylindrical partition plate and the second cylindrical partition plate.
Preferably, the over-lumen tube is not in the same position as the through-hole.
Preferably, the air inlet pipe is fixedly arranged at the bottom of the base; one end of the air inlet pipe sequentially penetrates through the outer side wall of the annular cylinder, the regenerative cavity and the first cylinder-shaped partition plate from outside to inside and is communicated with the diffusion cavity; the other end of the air inlet pipe is communicated with the output end of an external cooler.
Preferably, the air outlet pipe is fixedly arranged at the bottom of the base; one end of the air outlet pipe penetrates through the outer side wall of the annular cylinder and is communicated with the heat regeneration cavity; the other end of the air outlet pipe is communicated with the input end of the external cooler.
Preferably, the through hole is not located right opposite to the intake pipe.
Preferably, a first heat insulation sleeve is fixedly installed on one side, close to the regenerative cavity, of the first cylindrical partition plate.
Preferably, a second heat insulation sleeve is fixedly arranged on the outer wall of the over-cavity pipe.
The utility model discloses the following technical effects:
(1) the utility model can cool the base of the steam turbine generator integrally and simultaneously, so that the temperature distribution of the steam turbine generator is more uniform;
(2) the utility model can realize the quick replacement of hot air and cold air, increase the action time of the cold air and has more obvious cooling effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a top view of the present invention;
FIG. 2 is a cross-sectional view of the utility model A-A;
FIG. 3 is a cross-sectional view of the utility model B-B.
Wherein:
1. a base; 2. a generator stator core; 3. an annular cylinder; 4. a first cylindrical partition plate; 5. A second cylindrical partition plate; 6. a heat regenerative cavity; 7. a diffusion chamber; 8. a heat absorption cavity; 9. an air inlet pipe; 10. A through hole; 11. over-lumen tubes; 12. an air outlet pipe; 13. a first insulating sleeve; 14. and a second insulating sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-3, a ventilation structure of a steam turbine generator base comprises a base 1, a ventilation mechanism and a generator stator core 2 fixedly arranged in the middle of the ventilation mechanism; the ventilation mechanism comprises an annular cylinder 3; the annular cylinder 3 is fixedly arranged at the top of the base 1; the generator stator core 2 is coaxially and rotatably arranged on the inner side of the annular cylinder 3; a first cylindrical partition plate 4 and a second cylindrical partition plate 5 are coaxially and fixedly arranged in the inner cavity of the annular cylinder 3; the inner cavity of the annular cylinder 3 is divided into a heat return cavity 6, a diffusion cavity 7 and a heat absorption cavity 8 from outside to inside by a first cylinder type partition plate 4 and a second cylinder type partition plate 5 in sequence; the diffusion cavity 7 is communicated with the outside through an air inlet pipe 9; the diffusion cavity 7 is communicated with the heat absorption cavity 8; the heat absorption cavity 8 is communicated with the heat regeneration cavity 6; the regenerative chamber 6 is communicated with the outside through an air outlet pipe 12.
The annular cylinder 3 is formed by combining two cylinders with the same length but different section diameters, the two cylinders are coaxially arranged, two end faces of the two cylinders are sealed, the interior of the cylinder with the small diameter is not sealed, and the two cylinders are used for arranging the generator stator core 2; the area between the two cylinders is the inner cavity of the annular cylinder 3; the first cylindrical partition plate 4 and the second cylindrical partition plate 5 are both cylinders, and two end faces are flush with the annular cylinder 3.
In a further optimized scheme, a plurality of through holes 10 are formed in the side wall of the second cylindrical partition plate 5 at equal intervals; the diffusion chamber 7 is communicated with the heat absorption chamber 8 through a through hole 10.
The plurality of through holes 10 are circumferentially and uniformly distributed, the diameter of each through hole 10 is smaller than the distance between the first cylindrical partition plate 4 and the second cylindrical partition plate 5, so that cold air entering the diffusion cavity 7 can be fully diffused before entering the heat absorption cavity 8, and then enters the generator stator core 2 through the through holes 10, and the whole heat absorption of the generator stator core 2 is realized.
In a further optimized scheme, a plurality of over-cavity pipes 11 are fixedly arranged in the diffusion cavity 7; one end of the over-cavity pipe 11 penetrates through the first cylindrical partition plate 4 and is communicated with the heat regeneration cavity 6, and the other end of the over-cavity pipe 11 penetrates through the second cylindrical partition plate 5 and is communicated with the heat absorption cavity 8; the overflow cavity pipe 11 is fixedly and hermetically connected with the first cylindrical partition plate 4 and the second cylindrical partition plate 5.
The cross cavity pipe 11 can lead the hot air in the heat absorption cavity 8 to flow into the heat recovery cavity 6 and then enter the cooler again through the air outlet pipe 12; the arrangement of the multiple over-cavity pipes 11 can lead out the hot air after absorbing heat from the multiple over-cavity pipes 11, reduce the retention time of the hot air, lead the cold air to enter quickly and ensure the cooling effect.
In the further optimized scheme, the position of the over-cavity pipe 11 is staggered with the through hole 10; the over-cavity pipe 11 is arranged at a position between the adjacent through holes 10, so that cold air flowing from the through holes 10 can flow for a certain distance in the heat absorption cavity 8 and enter the over-cavity pipe 11 after absorbing heat.
In a further optimized scheme, the air inlet pipe 9 is fixedly arranged at the bottom of the base 1; one end of the air inlet pipe 9 sequentially penetrates through the outer side wall of the annular cylinder 3, the regenerative cavity 6 and the first cylinder-shaped partition plate 4 from outside to inside and is communicated with the diffusion cavity 7; the other end of the inlet pipe 9 communicates with the output end of an outside cooler (not shown).
The air inlet pipe 9 is communicated with the diffusion cavity 7, and cold air can be directly introduced into the diffusion cavity 7 until the whole diffusion cavity 7 is filled.
In a further optimized scheme, the air outlet pipe 12 is fixedly arranged at the bottom of the base 1; one end of the air outlet pipe 12 penetrates through the outer side wall of the annular cylinder 3 and is communicated with the regenerative cavity 6; the other end of the air outlet pipe 12 is communicated with the input end of an external cooler; the air outlet pipe 12 can lead out the hot air in the regenerative chamber 6.
The scheme is further optimized, the position of the through hole 10 is not right opposite to the air inlet pipe 9; cold air is prevented from directly entering the heat absorption chamber 8 from the through-holes 10 without being sufficiently diffused.
According to a further optimized scheme, a first heat insulation sleeve 13 is fixedly arranged on one side, close to the regenerative cavity 6, of the first cylindrical partition plate 4; the first heat insulation sleeve 13 can prevent the heat exchange between the regenerative chamber 6 and the diffusion chamber 7, avoid the temperature rise of cold air in the diffusion chamber 7 and reduce the cooling effect.
In a further optimized scheme, a second heat insulation sleeve 14 is fixedly arranged on the outer wall of the over-cavity pipe 11, hot air in the heat absorption cavity 8 passes through the diffusion cavity 7 when passing through the over-cavity pipe 11, and the second heat insulation sleeve 14 can prevent body gas in the over-cavity pipe 11 and gas in the diffusion cavity 7 from exchanging heat.
The working principle is as follows: the air cooled by the external cooler enters the diffusion cavity 7 from the air inlet pipe 9, when the cold air is completely diffused to the whole diffusion cavity 7, the cold air enters the heat absorption cavity 8 from the through hole 10 under the pressure action of the air, then absorbs heat, then enters the heat return cavity 6 from the nearest cavity crossing pipe 11 along with the flowing of the air, and the hot air in the heat return cavity 6 returns to the external cooler for cooling again through the air outlet pipe 12; in the process, after the cold air enters the diffusion cavity 7 from the air inlet pipe 9, because the diameter of the through holes 10 is smaller than the distance between the first cylindrical partition plate 4 and the second cylindrical partition plate 5, most of the cold air can be filled in the whole diffusion cavity 7 preferentially, only a small part of the cold air can enter the heat absorption cavity 8 from the through holes 10 close to one side of the air inlet pipe 9, and thus, after the diffusion cavity 7 is filled with the cold air, along with the increase of pressure, the cold air can enter the heat absorption cavity 8 from all the through holes 10 simultaneously and contact with the heating side wall, and because the through holes 10 are uniformly distributed in the circumferential direction, the heating side wall can be cooled simultaneously in an all-round way, so that the temperature distribution of the turbonator is more uniform; the cold air after absorbing heat can not stay too long in the heat absorbing cavity 8, and can flow out from the tube 11 closest to the heat absorbing cavity and enter the heat returning cavity 6 along with flowing diffusion, so that the temperature of the cold air in the heat absorbing cavity 8 is always in a lower state, and the cooling efficiency is improved.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (9)
1. A ventilation structure of a steam turbine generator base comprises a base (1), a ventilation mechanism and a generator stator iron core (2) fixedly arranged in the middle of the ventilation mechanism; the method is characterized in that: the ventilation mechanism comprises an annular cylinder (3); the annular cylinder (3) is fixedly arranged at the top of the base (1); the generator stator core (2) is coaxially and rotatably arranged on the inner side of the annular cylinder (3); a first cylindrical partition plate (4) and a second cylindrical partition plate (5) are coaxially and fixedly arranged in the inner cavity of the annular cylinder (3); the first cylindrical partition plate (4) and the second cylindrical partition plate (5) divide the inner cavity of the annular cylinder (3) into a heat return cavity (6), a diffusion cavity (7) and a heat absorption cavity (8) from outside to inside in sequence; the diffusion cavity (7) is communicated with the outside through an air inlet pipe (9); the diffusion cavity (7) is communicated with the heat absorption cavity (8); the heat absorption cavity (8) is communicated with the heat regeneration cavity (6); the heat recovery cavity (6) is communicated with the outside through an air outlet pipe (12).
2. The turbine generator stand ventilation structure according to claim 1, characterized in that: a plurality of through holes (10) are formed in the side wall of the second cylindrical partition plate (5) at equal intervals; the diffusion cavity (7) is communicated with the heat absorption cavity (8) through the through hole (10).
3. The turbine generator stand ventilation structure according to claim 2, characterized in that: a plurality of over-cavity pipes (11) are fixedly arranged in the diffusion cavity (7); one end of the over-cavity pipe (11) penetrates through the first cylindrical partition plate (4) and is communicated with the heat regeneration cavity (6), and the other end of the over-cavity pipe (11) penetrates through the second cylindrical partition plate (5) and is communicated with the heat absorption cavity (8); the over-cavity pipe (11) is fixedly and hermetically connected with the first cylindrical partition plate (4) and the second cylindrical partition plate (5).
4. A turbine generator stand ventilation structure according to claim 3, characterized in that: the positions of the over-cavity pipe (11) and the through hole (10) are different.
5. The turbine generator stand ventilation structure according to claim 1, characterized in that: the air inlet pipe (9) is fixedly arranged at the bottom of the base (1); one end of the air inlet pipe (9) sequentially penetrates through the outer side wall of the annular cylinder (3), the heat return cavity (6) and the first cylinder-shaped partition plate (4) from outside to inside and is communicated with the diffusion cavity (7); the other end of the air inlet pipe (9) is communicated with the output end of an external cooler.
6. The turbine generator stand ventilation structure according to claim 5, characterized in that: the air outlet pipe (12) is fixedly arranged at the bottom of the base (1); one end of the air outlet pipe (12) penetrates through the outer side wall of the annular cylinder (3) and is communicated with the heat recovery cavity (6); the other end of the air outlet pipe (12) is communicated with the input end of the external cooler.
7. The turbine generator stand ventilation structure according to claim 2, characterized in that: the air inlet pipe (9) and the through hole (10) are arranged in a staggered mode.
8. The turbine generator stand ventilation structure according to claim 1, characterized in that: and a first heat insulation sleeve (13) is fixedly arranged on one side of the first cylindrical partition plate (4) close to the heat regeneration cavity (6).
9. A turbine generator stand ventilation structure according to claim 3, characterized in that: and a second heat insulation sleeve (14) is fixedly arranged on the outer wall of the over-cavity pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122769654.9U CN216530868U (en) | 2021-11-12 | 2021-11-12 | Ventilation structure of steam turbine generator base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122769654.9U CN216530868U (en) | 2021-11-12 | 2021-11-12 | Ventilation structure of steam turbine generator base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216530868U true CN216530868U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122769654.9U Active CN216530868U (en) | 2021-11-12 | 2021-11-12 | Ventilation structure of steam turbine generator base |
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| Country | Link |
|---|---|
| CN (1) | CN216530868U (en) |
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2021
- 2021-11-12 CN CN202122769654.9U patent/CN216530868U/en active Active
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