CN220930185U - Heat insulation sealing structure and generator - Google Patents
Heat insulation sealing structure and generator Download PDFInfo
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- CN220930185U CN220930185U CN202322799903.8U CN202322799903U CN220930185U CN 220930185 U CN220930185 U CN 220930185U CN 202322799903 U CN202322799903 U CN 202322799903U CN 220930185 U CN220930185 U CN 220930185U
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- heat insulation
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- baffle
- generator
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- 238000009413 insulation Methods 0.000 title claims abstract description 166
- 238000007789 sealing Methods 0.000 title claims abstract description 93
- 230000000694 effects Effects 0.000 abstract description 14
- 230000004888 barrier function Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model provides a heat-insulating sealing structure and a generator, and belongs to the technical field of generators; the first heat insulation component is of an annular structure sleeved on the outer side of the rotating shaft of the generator, and a labyrinth airtight structure is arranged on the inner side wall of the first heat insulation component; the second heat insulation assembly is of a cylindrical structure, and an inner flange used for being connected with the first heat insulation assembly and an outer flange used for being connected with the generator shell are respectively arranged at two ends of the second heat insulation assembly. According to the heat-insulating sealing structure provided by the utility model, the gas sealing at the outer side of the rotating shaft is realized by utilizing the labyrinth airtight structure on the inner side wall of the first heat-insulating component; and meanwhile, the second heat insulation assembly is used for insulating the air flow in the volute and the generator shell, so that the heat transfer performance of the vortex end to the inside of the generator shell is reduced while the air is sealed, and the heat insulation and sealing effects are achieved.
Description
Technical Field
The utility model belongs to the technical field of generators, and particularly relates to a heat insulation sealing structure and a generator.
Background
The traditional air compressor/turbine generator needs cooling due to heat generation, and a water cooling structure and an air cooling structure are adopted to cool the generator main body. When the generator of the turbine generator heats, the impeller can generate heat at the turbine end in the running process, the temperature of the turbine end can reach 800 ℃, the heat at the turbine end is transferred to the generator, the whole temperature of the generator can be greatly increased, the running stability of the turbine generator is seriously affected, the failure rate of the turbine generator is increased, and the service life is reduced. The existing structure adopts the sealing structure that a sealing ring is added between a volute and a generator for sealing, the sealing effect of the structure is not ideal under the high temperature condition, and the adopted sealing ring can be melted at high temperature, so that the effects of heat insulation and sealing cannot be achieved.
Disclosure of utility model
The utility model aims to provide a heat-insulating sealing structure and a generator, and aims to realize gas sealing of a generator vortex end.
In order to achieve the above purpose, the utility model adopts the following technical scheme: providing a heat-insulating sealing structure, comprising a heat-insulating disc assembly, wherein the heat-insulating disc assembly comprises a first heat-insulating assembly and a second heat-insulating assembly; the first heat insulation component is of an annular structure sleeved on the outer side of the rotating shaft of the generator, and a labyrinth airtight structure is arranged on the inner side wall of the first heat insulation component; the second heat insulation assembly is of a cylindrical structure, and an inner flange used for being connected with the first heat insulation assembly and an outer flange used for being connected with the generator shell are respectively arranged at two ends of the second heat insulation assembly.
In another embodiment of the present application, a stepped concave structure is formed on a front side wall of the first heat insulation component, and a gap exists between the stepped concave structure and the turbine-end impeller.
As another embodiment of the application, the first heat insulation assembly comprises a first heat insulation baffle and a second heat insulation baffle which are sequentially connected from front to back, and the first heat insulation baffle is connected with the inner flange; the second heat insulation baffle is positioned at the rear side of the first heat insulation baffle, and the labyrinth airtight structure is arranged on the inner side wall of the second heat insulation baffle.
As another embodiment of the present application, a front baffle is further disposed at the front end of the first heat insulation baffle, and the inner diameters of the front baffle, the first heat insulation baffle and the second heat insulation baffle are sequentially reduced from front to back.
As another embodiment of the present application, the front baffle, the first heat insulation baffle and the second heat insulation baffle each comprise two semi-circular plates which are symmetrically arranged.
As another embodiment of the present application, the second heat insulation component includes an inner heat insulation disc and an outer heat insulation disc, the inner heat insulation disc includes a first annular side plate, a first outer flange and a first inner flange, the first inner flange is connected with the first heat insulation component, and a first sealing groove is provided on the front side of the first outer flange; the outer heat insulation plate comprises a second annular side plate and a second outer flange, and the second annular side plate is attached to the inner side of the first annular side plate; the second outer flange is attached to the rear side of the first outer flange.
In another embodiment of the present application, the heat insulation sealing structure further includes a second sealing groove that is opened on a flange surface of the generator housing, and a notch of the second sealing groove faces the second outer flange.
In another embodiment of the present application, sealing rings are disposed in the first sealing groove and the second sealing groove.
As another embodiment of the application, the generator housing is connected to the outer flange of the second heat insulation assembly by means of a connecting bolt, and a heat insulation pad is sleeved on the connecting bolt, and the heat insulation pad is located between the generator housing and a nut of the connecting bolt.
The heat insulation sealing structure provided by the utility model has the beneficial effects that: compared with the prior art, the heat-insulating sealing structure is added with the first heat-insulating component and the second heat-insulating component, and the gas sealing at the outer side of the rotating shaft is realized by utilizing the labyrinth airtight structure on the inner side wall of the first heat-insulating component; and meanwhile, the second heat insulation assembly is used for insulating the air flow in the volute and the generator shell, so that the gas sealing of the vortex end of the generator is realized, the heat transfer performance of the vortex end to the inside of the generator shell is reduced while the gas sealing is realized, and the heat insulation and sealing effects are achieved.
The generator further provides a heat insulation sealing structure.
The generator provided by the utility model has the beneficial effects that: compared with the prior art, the generator has all the beneficial effects of the heat insulation sealing structure; the labyrinth type airtight structure of the first heat insulation component can realize gas sealing on the outer side of the rotating shaft, the second heat insulation component is connected with the housing of the generator and the volute of the vortex end, and the second heat insulation component is connected with the first heat insulation component and used for insulating air flow between the volute and the housing of the generator, and simultaneously reducing heat transfer so as to realize gas sealing and heat insulation on the vortex end of the generator and prevent high-temperature air of the vortex end from transferring heat to the housing of the generator; and sealing rings are arranged between the second heat insulation assembly and the generator shell and between the second heat insulation assembly and the vortex end volute, so that the generator realizes multiple sealing effects and improves the sealing effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a thermal insulation tray assembly according to an embodiment of the present utility model;
FIG. 2 is an exploded view of a thermal insulation disc assembly provided in an embodiment of the present utility model;
fig. 3 is a schematic structural diagram of a heat insulation sealing structure according to an embodiment of the present utility model.
In the figure: 1. an inner side heat insulation plate; 2. an outer insulating disk; 3. a first seal groove; 4. a first annular side plate; 5. a first heat shield; 6. a front baffle; 7. a second annular side plate; 8. a first outer flange; 9. a first inner flange; 10. a second heat shield; 11. a heat insulating mat; 12. labyrinth type airtight structure.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 3, a heat insulation sealing structure and a generator provided by the present utility model will now be described. The heat insulation sealing structure comprises a heat insulation plate assembly, wherein the heat insulation plate assembly comprises a first heat insulation assembly and a second heat insulation assembly; the first heat insulation component is of an annular structure sleeved on the outer side of the rotating shaft of the generator, and the inner side wall of the first heat insulation component is provided with a labyrinth airtight structure 12; the second heat insulation assembly is of a cylindrical structure, and an inner flange used for being connected with the first heat insulation assembly and an outer flange used for being connected with the generator shell are respectively arranged at two ends of the second heat insulation assembly.
The heat insulation sealing structure adopts the structural form of a heat insulation disc assembly and a generator shell to realize gas sealing of the turbine end of the generator. Wherein the insulating disk assembly comprises a first insulating assembly for sealing the generator shaft and a second insulating assembly for sealing the generator housing and the turbine end housing. The first heat insulation component is of an annular structure, the annular structure is sleeved on the outer side of the rotating shaft, and the inner side wall of the annular structure is attached to the outer side wall of the rotating shaft; the inner side wall of the annular structure is provided with a labyrinth airtight structure 12, and the labyrinth airtight structure 12 is used for sealing the rotating shaft to prevent the outer side of the vortex-end high-temperature gas rotating shaft from entering the shell of the generator. The second heat insulation component is of a cylindrical structure, the structure is sleeved outside the generator shell and is connected with the generator shell by means of an outer flange, and the other end of the cylindrical structure of the second heat insulation component extends forwards along the axial direction of the generator until the other end of the cylindrical structure of the second heat insulation component extends to the upper end of the first heat insulation component and is connected with the first heat insulation component by means of an inner flange.
Compared with the prior art, the heat-insulating sealing structure provided by the utility model has the advantages that the first heat-insulating component and the second heat-insulating component are added, and the labyrinth airtight structure 12 on the inner side wall of the first heat-insulating component is utilized to realize gas sealing on the outer side of the rotating shaft; and meanwhile, the second heat insulation assembly is used for insulating the air flow in the volute and the generator shell, so that the gas sealing of the vortex end of the generator is realized, the heat transfer performance of the vortex end to the inside of the generator shell is reduced while the gas sealing is realized, and the heat insulation and sealing effects are achieved.
Optionally, the first heat insulation component and the second heat insulation component are made of mica plates, and the property of the material of the mica plates is heat insulation and high temperature resistance. By adding the first heat insulation component and the second heat insulation component between the vortex end and the generator shell, the heat transfer from the vortex end to the generator shell is effectively insulated, and therefore the heat dissipation capacity of the air compressor/generator is improved.
Optionally, a stepped concave structure is formed on the front side wall of the first heat insulation component, and a gap exists between the stepped concave structure and the turbine end impeller. The stepped concave structure comprises a plurality of annular limiting steps, wherein the inner diameters of the limiting steps gradually decrease from front to back until the inner side wall of the limiting step at the rearmost end is attached to the outer side of the rotating shaft. The labyrinth airtight structure 12 is arranged on the inner side wall of the limit step at the rearmost end, and the part is attached to the outer side of the rotating shaft to realize gas seal. The front side wall of the stepped concave structure faces the impeller side, and a certain interval is formed between the impellers by the front end face so as to ensure the normal operation of the impellers.
Further, the first heat insulation assembly comprises a first heat insulation baffle 5 and a second heat insulation baffle 10 which are sequentially connected from front to back, and the first heat insulation baffle 5 is connected with the inner flange; the second heat insulating barrier 10 is located at the rear side of the first heat insulating barrier 5 and the labyrinth airtight structure 12 is opened at the inner side wall of the second heat insulating barrier 10.
The first heat insulation assembly comprises a first heat insulation baffle 5 and a second heat insulation baffle 10 which are attached back and forth, wherein the outer diameter of the first heat insulation baffle 5 is larger than the outer diameter of the second heat insulation baffle 10, and the inner diameter of the first heat insulation baffle 5 is larger than the inner diameter of the second heat insulation baffle 10.
During installation, the outer side edge of the first heat insulation baffle plate 5 is connected with the inner flange of the second heat insulation assembly through bolts, after the first heat insulation baffle plate 5 is fixed, the second heat insulation baffle plate 10 is installed on the rear side of the first heat insulation baffle plate 5, the outer side wall of the second heat insulation baffle plate 10 is attached to the inner side of the second heat insulation assembly, and the labyrinth airtight structure 12 formed in the inner side wall of the second heat insulation baffle plate 10 is used for sealing a rotating shaft of the generator.
The first heat insulating barrier 5 and the second heat insulating barrier 10 are connected by bolts, through holes are formed in the first heat insulating barrier 5 and the second heat insulating barrier 10, and the bolts pass through the through holes and are fixed.
Optionally, the front end of the first heat insulation baffle 5 is further provided with a front baffle 6, and the inner diameters of the front baffle 6, the first heat insulation baffle 5 and the second heat insulation baffle 10 are sequentially reduced from front to back. The front baffle 6 is located at the front side of the first heat insulation baffle 5, the outer diameter of the front baffle 6 is identical to the outer diameter of the first heat insulation baffle 5, and the inner diameter of the front baffle 6 is larger than the inner diameter of the first heat insulation baffle 5.
The outer side wall of the front baffle 6 is connected with the volute of the vortex end, and the inner side wall of the front baffle 6 faces the rear end of the impeller. In order to adapt to the rear end face of the impeller, a limiting step is arranged on the front end face of the front baffle 6.
The front baffle 6 is made of mica plate material so as to increase the heat insulation effect.
In some possible embodiments, referring to fig. 2, the front baffle 6, the first heat shield 5 and the second heat shield 10 each comprise two symmetrically disposed semi-circular plates. For the convenience of installation, two semi-annular plates are symmetrically assembled to form an annular structure. The semi-annular plates corresponding to the front baffle 6, the first heat insulation baffle 5 and the second heat insulation baffle 10 are arranged in a staggered manner, so that gaps between the two symmetrical semi-annular plates are also arranged in a staggered manner, and the heat insulation effect is ensured.
In some possible embodiments, referring to fig. 2, the second heat insulation assembly comprises an inner heat insulation plate 1 and an outer heat insulation plate 2, the inner heat insulation plate 1 comprises a first annular side plate 4, a first outer flange 8 and a first inner flange 9, the first inner flange 9 is connected with the first heat insulation assembly, and a first sealing groove 3 is formed on the front side of the first outer flange 8; the outer heat insulation plate 2 comprises a second annular side plate 7 and a second outer flange, and the second annular side plate 7 is attached to the inner side of the first annular side plate 4; the second outer flange is attached to the rear side of the first outer flange 8.
The second heat insulation assembly comprises an inner heat insulation plate 1 and an outer heat insulation plate 2 which are sleeved together, wherein a first outer flange 8 of the inner heat insulation plate 1 and a second outer flange of the outer heat insulation plate 2 are bonded and overlapped front and back, and when the heat insulation assembly is installed, connecting bolts sequentially penetrate through a flange surface of a generator shell, the second outer flange and the first outer flange 8 from back to front and extend to a volute, so that the volute is fixed with the generator shell.
The second annular side plate 7 is attached to the inner side of the first annular side plate 4, and the inner side wall of the second annular side plate 7 is attached to the outer side end surface of the generator shell; the outer side wall of the first annular side plate 4 is attached to the volute, the length of the first annular side plate 4 is larger than that of the second annular side plate 7, the front end of the first annular side plate 4 extends out of the front end of the second annular side plate 7, and the extending part encloses a thrust bearing mounting cavity with the front end face of the generator shell and the rear end face of the first heat insulation assembly.
The first inner flange 9 at the front end of the first annular side plate 4 is bolted to the first heat shield plate 5. And the outer diameter of the second heat insulation baffle 10 is smaller than that of the first heat insulation baffle 5, and the outer side wall of the second heat insulation baffle 10 is attached to the inner side wall of the first inner flange 9.
The front side of the first outer flange 8 is provided with a first sealing groove 3, a sealing ring is arranged in the first sealing groove 3, and the sealing ring is positioned between the first outer flange 8 and the volute and is used for sealing a gap between the first outer flange 8 and the volute. Optionally, the sealing ring is a graphite gasket.
In some possible embodiments, referring to fig. 3, the heat insulation sealing structure further includes a second sealing groove opened on a flange surface of the generator housing, and a notch of the second sealing groove faces the second outer flange. And a sealing ring is also arranged in the second sealing groove, and the sealing ring is a graphite gasket.
The notch of the second sealing groove on the flange surface of the generator shell faces, and when the second heat insulation assembly is installed on the generator shell, the second outer flange of the inner heat insulation disc 1 of the second heat insulation assembly is attached to the flange surface of the generator shell and seals the notch of the second sealing groove. The second outer flange extrudes the sealing ring in the second sealing groove to realize sealing between the second heat insulation assembly and the generator shell.
The first outer flange 8 and the second outer flange are overlapped and arranged between the generator shell and the vortex end volute, the vortex end volute extrudes the sealing ring in the first sealing groove 3, and meanwhile, the second outer flange extrudes the sealing ring in the second sealing groove, so that multiple sealing effects are achieved, and the sealing effect is improved.
In some possible embodiments, referring to fig. 3, the generator housing is connected to the outer flange of the second insulation assembly by means of connecting bolts, the connecting bolts are sleeved with insulation pads 11, and the insulation pads 11 are located between the generator housing and nuts of the connecting bolts.
The heat insulation pad 11 is positioned between the screw cap and the generator shell, reduces the contact area between the connecting bolt and the generator shell, further improves the heat insulation effect, and prevents heat of the vortex end from being transferred to the generator, thereby preventing the temperature of the generator from being too high.
Also provided is a generator having the above heat-insulating sealing structure, which has the above generator housing structure, a heat-insulating disk assembly, and a heat-insulating pad 11.
Compared with the prior art, the generator provided by the utility model has all the beneficial effects of the heat insulation sealing structure; the labyrinth type airtight structure 12 of the first heat insulation component can realize gas sealing on the outer side of the rotating shaft, the second heat insulation component is connected with the housing of the generator and the volute of the vortex end, and the second heat insulation component is connected with the first heat insulation component and used for insulating air flow between the volute and the housing of the generator, and reducing heat transfer at the same time so as to realize gas sealing and heat insulation on the vortex end of the generator and prevent high-temperature air of the vortex end from transferring heat to the housing of the generator; and sealing rings are arranged between the second heat insulation assembly and the generator shell and between the second heat insulation assembly and the vortex end volute, so that the generator realizes multiple sealing effects and improves the sealing effect.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The heat insulation sealing structure is characterized by comprising a heat insulation plate assembly, wherein the heat insulation plate assembly comprises a first heat insulation assembly and a second heat insulation assembly; the first heat insulation component is of an annular structure sleeved on the outer side of a rotating shaft of the generator, and a labyrinth airtight structure (12) is arranged on the inner side wall of the first heat insulation component; the second heat insulation assembly is of a cylindrical structure, and an inner flange used for being connected with the first heat insulation assembly and an outer flange used for being connected with the generator shell are respectively arranged at two ends of the second heat insulation assembly.
2. The heat insulating seal unit of claim 1, wherein said front side wall of said first heat insulating unit is provided with a stepped concave structure, and a gap exists between said stepped concave structure and said turbine end impeller.
3. The heat-insulating sealing structure according to claim 2, wherein the first heat-insulating assembly comprises a first heat-insulating baffle (5) and a second heat-insulating baffle (10) connected in sequence from front to back, the first heat-insulating baffle (5) being connected with the inner flange; the second heat insulation baffle (10) is positioned at the rear side of the first heat insulation baffle (5), and the labyrinth airtight structure (12) is arranged on the inner side wall of the second heat insulation baffle (10).
4. A heat insulating and sealing structure according to claim 3, wherein a front baffle (6) is further provided at the front end of the first heat insulating baffle (5), and the inner diameters of the front baffle (6), the first heat insulating baffle (5) and the second heat insulating baffle (10) are sequentially reduced from front to back.
5. The heat-insulating sealing structure according to claim 4, characterized in that the front baffle (6), the first heat-insulating baffle (5) and the second heat-insulating baffle (10) each comprise two symmetrically arranged semi-annular plates.
6. The heat insulation sealing structure according to claim 1, wherein the second heat insulation assembly comprises an inner heat insulation plate (1) and an outer heat insulation plate (2), the inner heat insulation plate (1) comprises a first annular side plate (4), a first outer flange (8) and a first inner flange (9), the first inner flange (9) is connected with the first heat insulation assembly, and a first sealing groove (3) is formed in the front side of the first outer flange (8); the outer heat insulation plate (2) comprises a second annular side plate (7) and a second outer flange, and the second annular side plate (7) is attached to the inner side of the first annular side plate (4); the second outer flange is attached to the rear side of the first outer flange (8).
7. The insulating seal of claim 6, further comprising a second seal groove open to a flange face of said generator housing, a notch of said second seal groove facing said second outer flange.
8. The heat insulation sealing structure according to claim 7, wherein sealing rings are arranged in the first sealing groove (3) and the second sealing groove.
9. The heat-insulating sealing structure according to claim 1, wherein the generator housing is connected to the outer flange of the second heat-insulating assembly by means of a connecting bolt, the connecting bolt being provided with a heat-insulating pad (11), the heat-insulating pad (11) being located between the generator housing and a nut of the connecting bolt.
10. Generator, characterized in that it comprises a heat-insulating sealing structure according to any of the preceding claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322799903.8U CN220930185U (en) | 2023-10-18 | 2023-10-18 | Heat insulation sealing structure and generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322799903.8U CN220930185U (en) | 2023-10-18 | 2023-10-18 | Heat insulation sealing structure and generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220930185U true CN220930185U (en) | 2024-05-10 |
Family
ID=90966191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322799903.8U Active CN220930185U (en) | 2023-10-18 | 2023-10-18 | Heat insulation sealing structure and generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220930185U (en) |
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2023
- 2023-10-18 CN CN202322799903.8U patent/CN220930185U/en active Active
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