CN203098054U - Thermal-insulating board structure - Google Patents
Thermal-insulating board structure Download PDFInfo
- Publication number
- CN203098054U CN203098054U CN 201320025757 CN201320025757U CN203098054U CN 203098054 U CN203098054 U CN 203098054U CN 201320025757 CN201320025757 CN 201320025757 CN 201320025757 U CN201320025757 U CN 201320025757U CN 203098054 U CN203098054 U CN 203098054U
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- Prior art keywords
- thermal baffle
- main body
- thermal
- bearing
- sheet metal
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- Expired - Fee Related
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Abstract
The utility model discloses a thermal-insulating board structure at a turbine end of a minitype and small-size rotor power machine. The structure comprises a thermal-insulating board, and an outer ring of the thermal-insulating board is in transition fit with an inner ring of a bearing seat; a thermal-insulating coating is coated on the heated end surface of the thermal-insulating board, a boss is arranged on the other end surface of the thermal-insulating board, and the inner ring or the outer ring of the bearing is pushed tightly according to the structure need; a plurality of thermal-insulating slots are formed in the outer ring of the thermal-insulating board; a thermal-insulating coating is coated on a surface on which the boss of the thermal-insulating board and the bearing are contacted. The thermal-insulating board structure is simple and flexible, convenient to machine, obvious in thermal-insulating effect, the radiation and transfer heat of hot components at the turbine end to the bearing can be greatly reduced, and the service life of the bearing can be prolonged.
Description
Technical field
The utility model belongs to little, small rotor dynamic power machine general structure design field, relating to a kind of axle is the component heat-insulating structures, specifically, is meant a kind of turbine end bearing running hot that prevents, reduces the thermal baffle structure of heat load.
Background technique
Little, small rotor dynamic power machine turbine end bearing heat load height are the technical barriers that generally faces in the industry.High heat load is the main cause that causes the turbine end bearing to destroy.The turbine wheel normal working temperature is higher, is generally about 900 ℃, and 100 ℃ only ~ 120 ℃ of the highest allowable temperatures of ball bearing of support rotor.Therefore, concerning little, small size gas turbine when preventing that high-temperature fuel gas from leaking, heat insulation and the cooling of rotor is also very important, if heat insulation measures is improper, to those miniature or small size gas turbines that uses the ball ball bearing, high-temperature fuel gas not only heats bearing, makes the very fast inefficacy of bearing, and the axial distance that is in the turbine of higher temperature proper functioning and bearing is very short, and a large amount of heat transfers also can make the very fast inefficacy of bearing.At present, often get used to improving the bearing index, or seek high temperature resistant bearing, its cost is often too high, maybe can't find the bearing alternative of simultaneous adaptation high speed, high temperature.Thereby, press for bearing heat-insulating technique little, small size gas turbine is improved, under the prerequisite that does not increase system complexity, both can significantly reduce radiation, the conduction heat of turbine end heating part bearing, prolong the working life of bearing, can satisfy the structural member design requirement again.
Summary of the invention
The utility model is intended to shortcoming and defect little at having now, small size gas turbine bearing heat-insulating technique, a kind of novel bearing thermal baffle structure is proposed, be used in combination and require and environment, fixing and heat insulating function and one of (outward) circle in the collection bearing, the structural member design requirement can be satisfied, turbine end bearing heat load can be reduced again.Simultaneously, have simple in structurely, characteristics such as form is flexible, and is easy to process are suitable for engineering and promote.
The utility model is that the technological scheme that its technical problem of solution is taked is:
A kind of bearing thermal baffle structure, comprise ring-type thermal baffle main body, the outer ring of described thermal baffle main body and the bearing support inner ring transition fit that is arranged on the rotor casing, the center hole of described thermal baffle main body and rotor shaft Spielpassung, it is characterized in that, described thermal baffle structure also comprises the annular boss that is arranged on thermal baffle main body one side end face, the opposite side of the outer surface of described annular boss and described thermal baffle main body is heated and is coated with heat insulating coat on the end face, and the inner ring or the outer ring of described annular boss and described turbine end bearing hold out against setting; The outer ring attachment face of described thermal baffle main body is provided with some roads heat dam.
Preferably, the part beyond the annular boss and/or the side surface of described annular boss also are coated with heat insulating coat on the side end face of described thermal baffle main body.
Preferably, described thermal baffle main body is formed by stacking by multilayer ring-type sheet metal part, and adjacent sheet metal part external diameter difference is one high and one low, forms groove shape structure, is intended to reduce the area of contact of part and casing.
Further, be positioned at the sheet metal part external diameter of the sheet metal part external diameter at described thermal baffle main body two ends greater than inside.
Further, the slot opening that highly is interspersed is set on the surface of contact of adjacent two sheet metal parts, to increase the thermal resistance of axial heat conduction.
Further, smear heat insulating coat on the surface of contact of adjacent two sheet metal parts, strengthen effect of heat insulation.
The working principle of bearing thermal baffle structure of the present utility model: little, the small rotor dynamic power machine turbine heat end piece bearing approach of being heated comprises hot air flow conduction, hot junction part radiation, mating face transmission of heat etc.Thermal baffle heating end heat insulating coat can reduce hot air flow conduction and radiation heat transfer; Thermal baffle outer ring heat dam can reduce the area of contact of mating face, thereby reduces the transmission of heat at mating face place; The raised head face area is less, has increased the thermal resistance between thermal baffle and the bearing, has reduced the heat output to bearing; Heat dam quantity can be according to Environmental Conditions, technological level adjustment; The thermal baffle boss has concurrently in the rigid bearing or the effect of outer ring, and its position can be set in bearing and become inner ring place or place, outer ring as required.
Characteristics: simple in structure, easy to process, effect of heat insulation is obvious, and form is flexible.
Bearing thermal baffle structure of the present utility model has following significant advantage with respect to prior art: bearing thermal baffle structure of the present utility model, be used in combination and require and environment, fixing and heat insulating function and one of (outward) circle in the collection bearing, can satisfy the structural member design requirement, can reduce turbine end bearing heat load again, can significantly reduce radiation, the conduction heat of turbine end heating part to bearing, prolong the working life of bearing, solved little, the too high problem of small rotor dynamic power machine turbine end bearing heat load effectively.Simultaneously, have simple in structurely, characteristics such as form is flexible, and is easy to process are suitable for engineering and promote.
Description of drawings
Fig. 1 is the mounting structure schematic representation of bearing thermal baffle structure of the present utility model;
Fig. 2 is the partial enlarged drawing of the mounting structure of bearing thermal baffle structure of the present utility model;
Fig. 3 is another partial enlarged drawing of the mounting structure of bearing thermal baffle structure of the present utility model;
Fig. 4 is a bearing thermal baffle structural representation of the present utility model;
Fig. 5 is the mounting structure schematic representation of another bearing thermal baffle structure of the present utility model;
Fig. 6 is the partial enlarged drawing of another bearing thermal baffle structure shown in Figure 5.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
Shown in Fig. 1 to 4, bearing thermal baffle structure 100 of the present utility model, be applicable to and carry out heat insulation little, small rotor dynamic power machine turbine end bearing 200, comprise ring-type thermal baffle main body 106, the outer ring of thermal baffle main body 106 and the bearing support inner ring transition fit, the center hole of thermal baffle main body 106 and rotor shaft 300 Spielpassung that are arranged on the rotor casing 400.Thermal baffle structure 100 also comprises the annular boss 104 that is arranged on thermal baffle main body 106 1 side end faces, the outer surface 102 of annular boss 104 and the opposite side of thermal baffle main body 106 are heated and are coated with heat insulating coat on the end face 101, and annular boss 104 holds out against setting with the inner ring or the outer ring of turbine end bearing 200; The outer ring attachment face 105 of thermal baffle main body 106 is provided with some roads heat dam 103.Preferably, the part beyond the annular boss 104 and/or the side surface of annular boss 104 also are coated with heat insulating coat on the side end face of thermal baffle main body 106.
In another embodiment of the present utility model, shown in Fig. 5,6, thermal baffle main body 106 is formed by stacking by multilayer ring-type sheet metal part, and adjacent sheet metal part external diameter difference is one high and one low, forms groove shape structure, is intended to reduce the area of contact of part and casing.Be positioned at the sheet metal part external diameter of the sheet metal part external diameter at described thermal baffle main body 106 two ends greater than inside.The slot opening that highly is interspersed is set, to increase the thermal resistance of axial heat conduction on the surface of contact of adjacent two sheet metal parts.Smear heat insulating coat on the surface of contact of adjacent two sheet metal parts, strengthen effect of heat insulation.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of the present utility model.
Claims (6)
1. thermal baffle structure, comprise ring-type thermal baffle main body, the outer ring of described thermal baffle main body and the bearing support inner ring transition fit that is arranged on the rotor casing, the center hole of described thermal baffle main body and rotor shaft Spielpassung, it is characterized in that, described thermal baffle structure also comprises the annular boss that is arranged on thermal baffle main body one side end face, the opposite side of the outer surface of described annular boss and described thermal baffle main body is heated and is coated with heat insulating coat on the end face, and the inner ring or the outer ring of described annular boss and turbine end bearing hold out against setting; The outer ring attachment face of described thermal baffle main body is provided with some roads heat dam.
2. thermal baffle structure according to claim 1 is characterized in that, the part on the side end face of described thermal baffle main body beyond the annular boss and/or the side surface of described annular boss also are coated with heat insulating coat.
3. thermal baffle structure according to claim 1 is characterized in that, described thermal baffle main body is formed by stacking by multilayer ring-type sheet metal part, and adjacent sheet metal part external diameter difference forms groove shape structure.
4. thermal baffle structure according to claim 3 is characterized in that, is positioned at the sheet metal part external diameter of the sheet metal part external diameter at described thermal baffle main body two ends greater than inside.
5. according to claim 3 or 4 described thermal baffle structures, it is characterized in that, the slot opening that highly is interspersed is set on the surface of contact of adjacent two sheet metal parts, to increase the thermal resistance of axial heat conduction.
6. according to claim 3 or 4 described thermal baffle structures, it is characterized in that, smear heat insulating coat on the surface of contact of adjacent two sheet metal parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025757 CN203098054U (en) | 2013-01-17 | 2013-01-17 | Thermal-insulating board structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025757 CN203098054U (en) | 2013-01-17 | 2013-01-17 | Thermal-insulating board structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098054U true CN203098054U (en) | 2013-07-31 |
Family
ID=48849461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320025757 Expired - Fee Related CN203098054U (en) | 2013-01-17 | 2013-01-17 | Thermal-insulating board structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047014A (en) * | 2013-01-17 | 2013-04-17 | 中国科学院工程热物理研究所 | Heat insulation plate structure |
-
2013
- 2013-01-17 CN CN 201320025757 patent/CN203098054U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047014A (en) * | 2013-01-17 | 2013-04-17 | 中国科学院工程热物理研究所 | Heat insulation plate structure |
| CN103047014B (en) * | 2013-01-17 | 2015-04-22 | 中国科学院工程热物理研究所 | Heat insulation plate structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20200117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |