CN205172736U - Separate heat exchanger and have this thermal -insulated structure that separates heat exchanger - Google Patents
Separate heat exchanger and have this thermal -insulated structure that separates heat exchanger Download PDFInfo
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- CN205172736U CN205172736U CN201520954046.7U CN201520954046U CN205172736U CN 205172736 U CN205172736 U CN 205172736U CN 201520954046 U CN201520954046 U CN 201520954046U CN 205172736 U CN205172736 U CN 205172736U
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- thermal shield
- thermal
- heat exchanger
- concave circular
- segmental arc
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Abstract
The utility model discloses a separate heat exchanger, separate heat exchanger and be the annular, the cross section that separates heat exchanger includes the multistage straightway, is equipped with outside convex dome segmental arc and/or inside sunken concave circular segmental arc between two sections adjacent straightways. The utility model also discloses a thermal -insulated structure, including treating thermal -insulated parts, treat that thermal -insulated parts dustcoat is equipped with if the foretell heat exchanger of separating heat exchanger and links to each other with treating thermal -insulated parts. In this neotype thermal -insulated structure, adopt the utility model discloses a separate heat exchanger, so not only can play thermal insulation function, and make and separate the amount of thermal deformation that thermal -insulated parts produced that treats that heat exchanger is connected and to obtain the compensation, reduce the thermal stress, prevent to separate heat exchanger's girth seam itself and crack because of the thermal stress is too big with treating the thermal -insulated continuous position of being connected of parts, the life of improvement engine, simultaneously, go up the dome segmental arc and/or the concave circular segmental arc that set up at a distance from heat exchanger and also increased fluidic area of contact, also strengthened the fluidic heat transfer simultaneously, make the effect that insulates against heat obviously be superior to the current heat exchanger that separates.
Description
Technical field
The utility model relates to aeroengine field, especially, relates to a kind of thermal shield.In addition, the utility model also relates to a kind of heat-insulating structure with above-mentioned thermal shield.
Background technique
Along with improving constantly of aeroengine thrust weight ratio or power to weight ratio, its hot-end component bears higher temperature and larger load, and in order to improve the life and reliability of aeroengine, the operating temperature therefore reducing hot-end component is vital.In aeroengine, between different parts or the temperature distribution of same components interior be uneven.High temperature spare part is too much to low temperature spare part heat output, then some low temperature part can be caused to produce hot crack or Yin Wendu is too high causes the abnormal conditions such as lubricating oil coking, carbon distribution, affects the normal use of part and motor.
In order to the spare part preventing temperature high conducts heat to the spare part that temperature is low, reasonably heat-insulating structure design will be carried out.At present, in aeroengine hot-end component (as turbine), be all provided with thermal shield, generally heat shield surface be arranged to plane or along shaping by heat insulation part surface, be connected with low temperature spare part by the mode of welding.
Because heat shield surface is that plane or edge are shaping by heat insulation part surface, only play heat-blocking action, under the effect of motor alternate load, heat shield surface and welding part easily crack, effect of heat insulation declines, and affects the normal work of low temperature spare part, reduces the life-span of motor.
Model utility content
The utility model provides a kind of thermal shield and has the heat-insulating structure of this thermal shield, poor to solve existing thermal shield effect of heat insulation under the effect of alternate load, affects the normal work of low temperature spare part, reduces the technical problem in the life-span of motor.
The technical solution adopted in the utility model is as follows:
A kind of thermal shield, thermal shield ringwise, is treated that heat insulating member is outer and is treated heat insulating member for covering to prevent outside high temp objects to be passed to by heat; The cross section of thermal shield comprises multistage straightway, the concave circular arc section being provided with outwardly dome segmental arc and/or caving inward between adjacent two sections of straightways.
Further, at least one dome segmental arc is provided with between adjacent two sections of straightways.
Further, at least one section of concave circular arc section is provided with between adjacent two sections of straightways.
Further, often one group of dome segmental arc and one group of concave circular arc section is provided with between adjacent three sections of straightways; Often organize dome segmental arc and comprise at least one dome segmental arc; Often organize concave circular arc section and comprise at least one concave circular arc section.
Further, at least one dome segmental arc and at least one concave circular arc section is provided with between adjacent two sections of straightways.
Further, the dome segmental arc between adjacent two sections of straightways and concave circular arc section on the width direction of thermal shield successively interval arrange.
Further, straightway and adjacent dome segmental arc or adjacent concave circular arc section, dome segmental arc and adjacent dome segmental arc or adjacent concave circular arc section and concave circular arc section are connected with the adjacent equal rounding off of concave circular arc section.
Further, dome segmental arc and concave circular arc section are semi-circle.
According to another aspect of the present utility model, additionally provide a kind of heat-insulating structure, comprise and treat heat insulating member, treat outside heat insulating member, to be covered with thermal shield any one of claim 1 to 8, thermal shield with treat that heat insulating member is connected.
Further, the two ends of thermal shield respectively with treat that heat insulating member is welded and fixed.
The utility model has following beneficial effect:
1, thermal shield of the present utility model, not only can play heat-blocking action, prevents outside high temp objects to be passed to by heat and treats on heat insulating member; And the concave circular arc section being provided with outwardly dome segmental arc and/or caving inward between adjacent two sections of straightways due to the cross section of thermal shield, so when until heat insulating member temperature distortion, thermal shield is temperature distortion also, there is elastic strain in the dome segmental arc now on thermal shield and/or concave circular arc section simultaneously, and also there is less deformation in straightway, thus make to be connected with thermal shield treat that the heat distortion amount that heat insulating member produces can be compensated, reduce thermal stress, improve the working life of motor; Meanwhile, the dome segmental arc that thermal shield is arranged and/or concave circular arc section also increase the area of contact of fluid, also enhance the heat exchange of fluid simultaneously, make effect of heat insulation obviously be better than existing thermal shield.
2, in heat-insulating structure of the present utility model, owing to adopting thermal shield of the present utility model, so not only can heat-blocking action be played, what also make to be connected with thermal shield treats that the heat distortion amount that heat insulating member produces can be compensated, reduce thermal stress, prevent the girth seam of thermal shield itself and with treat that the connection part that heat insulating member is connected cracks because thermal stress is excessive, improve working life of motor; Meanwhile, also increase the area of contact of fluid, also enhance the heat exchange of fluid simultaneously, make effect of heat insulation obviously be better than existing thermal shield.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the thermal shield of the utility model preferred embodiment;
Fig. 2 is the cross-sectional structure schematic diagram of the first embodiment of thermal shield in Fig. 1;
Fig. 3 is the cross-sectional structure schematic diagram of the second embodiment of thermal shield in Fig. 1;
Fig. 4 is the cross-sectional structure schematic diagram of the 3rd embodiment of thermal shield in Fig. 1;
Fig. 5 is the cross-sectional structure schematic diagram of the 4th embodiment of thermal shield in Fig. 1;
Fig. 6 is the structural representation of the heat-insulating structure of the utility model preferred embodiment.
Marginal data
1, thermal shield; 101, straightway; 102, dome segmental arc; 103, concave circular arc section; 2, heat insulating member is treated.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figures 1 to 5, preferred embodiment of the present utility model provides a kind of thermal shield, and thermal shield 1 ringwise, is treated that heat insulating member is outer and treated heat insulating member for covering to prevent outside high temp objects to be passed to by heat; The cross section of thermal shield 1 comprises multistage straightway 101, the concave circular arc section 103 being provided with outwardly dome segmental arc 102 and/or caving inward between adjacent two sections of straightways 101.Thermal shield 1 of the present utility model, not only can play heat-blocking action, prevents outside high temp objects to be passed to by heat and treats on heat insulating member; And the concave circular arc section 103 being provided with outwardly dome segmental arc 102 and/or caving inward between adjacent two sections of straightways 101 due to the cross section of thermal shield 1, so when until heat insulating member temperature distortion, thermal shield 1 also temperature distortion, there is elastic strain in the dome segmental arc 102 now on thermal shield 1 and/or concave circular arc section 103 simultaneously, and also there is less deformation in straightway 101, thus make to be connected with thermal shield 1 treat that the heat distortion amount that heat insulating member produces can be compensated, reduce thermal stress, improve the working life of motor; Meanwhile, the dome segmental arc 102 that thermal shield 1 is arranged and/or concave circular arc section 103 also increase the area of contact of fluid, also enhance the heat exchange of fluid simultaneously, make effect of heat insulation obviously be better than existing thermal shield.
Alternatively, as shown in Figure 1, thermal shield 1 is welded by thermal baffle first place, and the cross-sectional structure of thermal baffle is identical with the cross-sectional structure of thermal shield 1.
Alternatively, as shown in Figure 2, the first embodiment of the present utility model, is only provided with outwardly dome segmental arc 102 between adjacent two sections of straightways 101, and the quantity of dome segmental arc 102 can be one also can for many.
Alternatively, as shown in Figure 3, the second embodiment of the present utility model, with the first embodiment unlike, be only provided with the concave circular arc section 103 caved inward between adjacent two sections of straightways 101, and the quantity of concave circular arc section 103 can be one also can for many.
Alternatively, as shown in Figure 4, the 3rd embodiment of the present utility model, with the first embodiment and the second embodiment unlike, on the width direction of thermal shield 1, be often provided with one group of dome segmental arc 102 and one group of concave circular arc section 103 between adjacent three sections of straightways 101; Often organize dome segmental arc 102 and can comprise a dome segmental arc 102, also can comprise many dome segmental arcs 102; Often organize concave circular arc section 103 and can comprise a concave circular arc section 103, also can comprise many concave circular arc sections 103.
Alternatively, the 4th embodiment of the present utility model, with the 3rd embodiment unlike, be provided with at least one dome segmental arc 102 and at least one concave circular arc section 103 between adjacent two sections of straightways 101.
Preferably, as shown in Figure 5, the dome segmental arc 102 between adjacent two sections of straightways 101 and concave circular arc section 103 on the width direction of thermal shield 1 successively interval arrange.
In the utility model preferred embodiment, straightway 101 is connected with adjacent dome segmental arc 102 or adjacent concave circular arc section 103 rounding off; Dome segmental arc 102 is connected with adjacent dome segmental arc 102 or adjacent concave circular arc section 103 rounding off; And concave circular arc section 103 is connected with adjacent concave circular arc section 103 rounding off.
In the utility model preferred embodiment, dome segmental arc 102 and concave circular arc section 103 are semi-circle, and the diameter of semi-circle is determined according to concrete temperature conditions, when temperature is higher, the diameter of dome segmental arc 102 and the diameter of concave circular arc section 103 are comparatively large, increase the area of contact of fluid, the heat exchange of enhance fluid, otherwise, then the diameter of dome segmental arc 102 and the diameter of concave circular arc section 103 less.Preferably, the diameter of the dome segmental arc 102 on thermal shield 1 can be the same or different, same, the diameter of the concave circular arc section 103 on thermal shield 1 can be the same or different, and the diameter of dome segmental arc 102 on same thermal shield 1 and the diameter of concave circular arc section 103 can be the same or different.Dome segmental arc 102 and/or the setting position of concave circular arc section 103 on thermal shield 1 are arranged according to the structure space of reality.
As shown in Figure 6, preferred embodiment of the present utility model provides a kind of heat-insulating structure, comprises and treats heat insulating member 2, treats to be covered with thermal shield 1 described above outside heat insulating member 2, thermal shield 1 with treat that heat insulating member 2 is connected.In heat-insulating structure of the present utility model, owing to adopting thermal shield 1 of the present utility model, so not only can heat-blocking action be played, prevent outside high temp objects to be passed to by heat and treat on heat insulating member 2, and the concave circular arc section 103 being provided with outwardly dome segmental arc 102 and/or caving inward between adjacent two sections of straightways 101 due to the cross section of thermal shield 1, so when until heat insulating member temperature distortion, thermal shield 1 also temperature distortion, there is elastic strain in the dome segmental arc 102 now on thermal shield 1 and/or concave circular arc section 103 simultaneously, and also there is less deformation in straightway 101, thus make to be connected with thermal shield 1 treat that the heat distortion amount that heat insulating member produces can be compensated, reduce thermal stress, prevent the girth seam of thermal shield 1 itself and with treat that the connection part that heat insulating member 2 is connected cracks because thermal stress is excessive, improve the working life of motor, meanwhile, the dome segmental arc 102 that thermal shield 1 is arranged and/or concave circular arc section 103 also increase the area of contact of fluid, also enhance the heat exchange of fluid simultaneously, make effect of heat insulation obviously be better than existing thermal shield.
Alternatively, as shown in Figure 6, the two ends of thermal shield 1 respectively with treat that heat insulating member 2 is welded and fixed.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a thermal shield, is characterized in that,
Described thermal shield (1) ringwise, for cover at treat heat insulating member outer with prevent outside high temp objects heat is passed to described in treat heat insulating member;
The cross section of described thermal shield (1) comprises multistage straightway (101), the concave circular arc section (103) being provided with outwardly dome segmental arc (102) and/or caving inward between adjacent two sections of described straightways (101).
2. thermal shield according to claim 1, is characterized in that,
Dome segmental arc (102) described at least one is provided with between adjacent two sections of described straightways (101).
3. thermal shield according to claim 1, is characterized in that,
At least one section of described concave circular arc section (103) is provided with between adjacent two sections of described straightways (101).
4. thermal shield according to claim 1, is characterized in that,
Often be provided with concave circular arc section (103) described in dome segmental arc (102) described in a group and a group between adjacent three sections of described straightways (101);
Often organize described dome segmental arc (102) and comprise dome segmental arc (102) described at least one;
Often organize described concave circular arc section (103) and comprise concave circular arc section (103) described at least one.
5. thermal shield according to claim 1, is characterized in that,
Dome segmental arc (102) described at least one and concave circular arc section (103) described at least one is provided with between adjacent two sections of described straightways (101).
6. thermal shield according to claim 5, is characterized in that,
Described dome segmental arc (102) between adjacent two sections of described straightways (101) and described concave circular arc section (103) on the width direction of described thermal shield (1) successively interval arrange.
7. thermal shield according to any one of claim 1 to 6, is characterized in that,
Described straightway (101) and adjacent described dome segmental arc (102) or adjacent described concave circular arc section (103), described dome segmental arc (102) and adjacent described dome segmental arc (102) or adjacent described concave circular arc section (103) and described concave circular arc section (103) and adjacent described concave circular arc section (103) all rounding off are connected.
8. thermal shield according to any one of claim 1 to 6, is characterized in that,
Described dome segmental arc (102) and described concave circular arc section (103) are semi-circle.
9. a heat-insulating structure, is characterized in that,
Comprise and treat heat insulating member (2), described treating is covered with thermal shield (1) according to any one of claim 1 to 8 outside heat insulating member (2), with described, described thermal shield (1) treats that heat insulating member (2) is connected.
10. heat-insulating structure according to claim 9, is characterized in that,
With described, the two ends of described thermal shield (1) treat that heat insulating member (2) is welded and fixed respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954046.7U CN205172736U (en) | 2015-11-25 | 2015-11-25 | Separate heat exchanger and have this thermal -insulated structure that separates heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520954046.7U CN205172736U (en) | 2015-11-25 | 2015-11-25 | Separate heat exchanger and have this thermal -insulated structure that separates heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN205172736U true CN205172736U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520954046.7U Active CN205172736U (en) | 2015-11-25 | 2015-11-25 | Separate heat exchanger and have this thermal -insulated structure that separates heat exchanger |
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| CN (1) | CN205172736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115138745A (en) * | 2022-05-27 | 2022-10-04 | 北京航空航天大学 | Multi-pass rigid-flexible composite forming method and device for overall heat shield of aero-engine |
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2015
- 2015-11-25 CN CN201520954046.7U patent/CN205172736U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115138745A (en) * | 2022-05-27 | 2022-10-04 | 北京航空航天大学 | Multi-pass rigid-flexible composite forming method and device for overall heat shield of aero-engine |
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