CN216520323U - Internal thermal insulation structure of high-temperature pipeline for engine test - Google Patents
Internal thermal insulation structure of high-temperature pipeline for engine test Download PDFInfo
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- CN216520323U CN216520323U CN202121429440.0U CN202121429440U CN216520323U CN 216520323 U CN216520323 U CN 216520323U CN 202121429440 U CN202121429440 U CN 202121429440U CN 216520323 U CN216520323 U CN 216520323U
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Abstract
The utility model relates to an internal thermal insulation structure of a high-temperature pipeline for an engine test, which comprises a pipeline and at least one thermal insulation section; the heat preservation section is arranged on the inner wall of the pipeline; each heat preservation section comprises a cavity shell, a heat preservation material, a plurality of pressure rings and a floating cylinder; the cavity housing is a ring-shaped element, the ring-shaped element is provided with a semi-closed ring cavity with an annular opening on the inner side, the semi-closed ring cavity is internally provided with a heat insulation material, the annular opening is provided with an annular flanging, the compression rings are arranged in the annular flanging, and a plurality of compression rings are arranged in pairs on two sides of the annular opening and used for compressing the heat insulation material, the floating cylinder sleeve is limited by the annular flanging in the annular flanging, the two ends of the floating cylinder are both in clearance with the ring-shaped element, and the compression rings and the annular flanging are used for arranging the floating cylinder sleeve in the middle. The utility model reduces the temperature of the wall surface of the external pressure-bearing pipeline through the internal heat-insulating layer, the material selection of the external pressure-bearing pipeline is easier, and the manufacturing cost of the pipeline system of the engine combustion chamber test bed is effectively reduced; the thermal inertia of the whole pipeline is effectively reduced, and the tester can quickly reach the preset working condition.
Description
Technical Field
The utility model is mainly applied to the ultra-high temperature pipeline and equipment of the aerospace ground test bed, and can be applied to the industries needing high-temperature media, such as nonferrous metal, metallurgy, chemical engineering and the like.
Background
With the continuous development of the aviation industry in China, the demand for the aviation engine with advanced performance is urgent. The aero-engine is a key link and a high-value link in the whole aviation industry chain, and has been a bottleneck problem which restricts the development of the aviation industry in China for a long time. The ground test bed is used as a main device for testing the engine and needs to be developed along with the development of the engine. The working condition of the high-performance engine is more and more rigorous, and the ground test equipment is used as main equipment for testing and judging the performance of the engine, so that the similar working environment is more and more difficult to realize for the aero-engine. With the development of aircraft engines, ground test benches need to provide high-temperature and high-pressure working environments for tested pieces. Under working conditions of over 800 ℃ and even higher, the existing material can not meet the requirements of the working conditions, and the material price is very expensive even if the requirements of the working conditions are met; when the wall surface of the pipeline is protected by cooling with the water cooling jacket, a large amount of heat is taken away by the water cooling jacket, and the energy consumption is increased; meanwhile, the mode of heat preservation of the outer wall of the high-temperature alloy or water cooling jacket is adopted, the self thermal inertia of the pipeline is large, the heat engine time in the early stage of the test equipment is increased, and the energy consumption is increased.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is that: the internal heat insulation structure for the small-caliber high-temperature pipeline is adopted, the wall surface temperature of the external pressure-bearing pipeline is reduced through the modularized heat insulation layer, the material selection of the external pressure-bearing pipeline is easier, and the cost is obviously reduced; meanwhile, the internal heat-insulation protective plate is a thin-wall plate, so that the thermal inertia of the whole pipeline is effectively reduced, and the tester can quickly reach a preset working condition; the heat preservation adopts the modularized design, easy to assemble and maintain. The application of this patent can effectual reduction ultra-high temperature pipeline's manufacturing cost, shortens experimental earlier stage preparation time. The patent has certain promotion significance on aeroengine ground test equipment, and also has reference effect on other industries with similar mechanisms.
The technical scheme is as follows: providing an internal thermal insulation structure of a high-temperature pipeline for an engine test, wherein the internal thermal insulation structure comprises a pipeline and at least one thermal insulation section; the heat preservation section is arranged on the inner wall of the pipeline;
each heat preservation section comprises a cavity shell, a heat preservation material, a plurality of pressure rings and a floating cylinder;
the cavity housing is a ring-shaped element, the ring-shaped element is provided with a semi-closed ring cavity with an annular opening on the inner side, the semi-closed ring cavity is internally provided with a heat insulation material, the annular opening is provided with an annular flanging, the compression rings are arranged in the annular flanging, and a plurality of compression rings are arranged in pairs on two sides of the annular opening and used for compressing the heat insulation material, the floating cylinder sleeve is limited by the annular flanging in the annular flanging, the two ends of the floating cylinder are both in clearance with the ring-shaped element, and the compression rings and the annular flanging are used for arranging the floating cylinder sleeve in the middle.
Furthermore, a plurality of small holes are formed in the floating cylinder and used for balancing the pressure inside and outside the semi-closed annular cavity.
Furthermore, the cavity shell is made of metal.
Furthermore, the heat preservation sections are connected through labyrinth seal.
Further, the float cylinder expands as the temperature increases.
Furthermore, a protruding part is formed in the semi-closed annular cavity, and the compression ring is limited in the radial direction.
Furthermore, glass cloth is arranged between the pressure ring and the cavity shell and between the pressure ring and the floating cylinder. Preferably, the glass cloth is formed as a ring-shaped member.
The technical effects are as follows:
the temperature of the wall surface of the external pressure-bearing pipeline is reduced through the internal heat-insulating layer, the material selection of the external pressure-bearing pipeline is easier, and the manufacturing cost of the pipeline system of the engine combustion chamber test bed is effectively reduced; the thermal inertia of the whole pipeline is effectively reduced, and the tester can quickly reach a preset working condition; the heat loss of a pipeline system of the engine combustion chamber test bed is effectively reduced, and the working environment in a factory is effectively improved; the research and development of the combustion chamber of the aero-engine are promoted, and meanwhile, the reference function is provided for other industries with similar mechanisms.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic structural view of a chamber shell;
FIG. 3 is a schematic view of the insulation section;
FIG. 4 is a schematic structural view of a floating drum;
FIG. 5 is a schematic view of the compression ring;
FIG. 6 is a cross-sectional view of the general assembly of the present invention;
FIG. 7 is a schematic structural view of a thermal insulation material;
wherein: 1. the heat preservation section comprises a heat preservation section 2, a pipeline 3, a cavity housing 4, a heat preservation material 5, a pressure ring 6, a floating cylinder 7, a small hole 8, a flanging 9, a protruding part and 10 glass cloth.
Detailed Description
Example 1, referring to fig. 1-7, an internal insulation structure for providing high temperature piping for engine testing is provided, comprising a pipe, at least one insulation section; the heat preservation section is arranged on the inner wall of the pipeline;
each heat preservation section comprises a cavity shell, a heat preservation material, a plurality of pressure rings and a floating cylinder;
the cavity housing is a ring-shaped element, the ring-shaped element is provided with a semi-closed ring cavity with an annular opening on the inner side, the semi-closed ring cavity is internally provided with a heat insulation material, the annular opening is provided with an annular flanging, the compression rings are arranged in the annular flanging, and a plurality of compression rings are arranged in pairs on two sides of the annular opening and used for compressing the heat insulation material, the floating cylinder sleeve is limited by the annular flanging in the annular flanging, the two ends of the floating cylinder are both in clearance with the ring-shaped element, and the compression rings and the annular flanging are used for arranging the floating cylinder sleeve in the middle. The floating cylinder is provided with a plurality of small holes for balancing the pressure inside and outside the semi-closed annular cavity.
Example 2, referring to fig. 1-7, an internal insulation structure for providing high temperature piping for engine testing is provided, comprising a pipe, at least one insulation section; the heat preservation section is arranged on the inner wall of the pipeline;
each heat preservation section comprises a cavity shell, a heat preservation material, a plurality of pressure rings and a floating cylinder;
the cavity housing is a ring-shaped element, the ring-shaped element is provided with a semi-closed ring cavity with an annular opening on the inner side, the semi-closed ring cavity is internally provided with a heat insulation material, the annular opening is provided with an annular flanging, the compression rings are arranged in the annular flanging, and a plurality of compression rings are arranged in pairs on two sides of the annular opening and used for compressing the heat insulation material, the floating cylinder sleeve is limited by the annular flanging in the annular flanging, the two ends of the floating cylinder are both in clearance with the ring-shaped element, and the compression rings and the annular flanging are used for arranging the floating cylinder sleeve in the middle.
The floating cylinder is provided with a plurality of small holes for balancing the pressure inside and outside the semi-closed annular cavity.
The cavity shell is made of metal.
The heat preservation sections are connected through labyrinth seal.
The floating cartridge expands as the temperature increases.
And a bulge is formed in the semi-closed annular cavity to radially limit the pressure ring.
Glass cloth is arranged between the pressure ring and the cavity shell and between the pressure ring and the floating cylinder. The glass cloth is formed into a ring-shaped member.
Claims (9)
1. A interior insulation construction for engine test's high temperature pipeline, its characterized in that: comprises a pipeline and at least one heat preservation section; the heat preservation section is arranged on the inner wall of the pipeline;
each heat preservation section comprises a cavity shell, a heat preservation material, a plurality of pressure rings and a floating cylinder;
the cavity housing is a ring-shaped element, the ring-shaped element is provided with a semi-closed ring cavity with an annular opening on the inner side, the semi-closed ring cavity is internally provided with a heat insulation material, the annular opening is provided with an annular flanging, the compression rings are arranged in the annular flanging, and a plurality of compression rings are arranged in pairs on two sides of the annular opening and used for compressing the heat insulation material, the floating cylinder sleeve is limited by the annular flanging in the annular flanging, the two ends of the floating cylinder are both in clearance with the ring-shaped element, and the compression rings and the annular flanging are used for arranging the floating cylinder sleeve in the middle.
2. The internal insulation structure of a high temperature pipe for an engine test according to claim 1, wherein: the floating cylinder is provided with a plurality of small holes for balancing the pressure inside and outside the semi-closed annular cavity.
3. The internal insulation structure of a high temperature pipe for an engine test according to claim 1, wherein: the cavity shell is made of metal.
4. The internal insulation structure of a high temperature pipe for an engine test according to claim 1, wherein: the heat preservation sections are connected through labyrinth seal.
5. The internal insulation structure of a high-temperature pipe for an engine test as set forth in claim 1, wherein: the floating cartridge expands as the temperature increases.
6. The internal insulation structure of a high temperature pipe for an engine test according to claim 1, wherein: and a bulge is formed in the semi-closed annular cavity and used for radially limiting the pressure ring.
7. The internal insulation structure of a high temperature pipe for an engine test according to claim 1, wherein: glass cloth is arranged between the pressure ring and the cavity shell and between the pressure ring and the floating cylinder.
8. The internal insulation structure of a high temperature pipe for an engine test according to claim 7, wherein: the glass cloth is formed into a ring-shaped member.
9. The internal insulation structure of a high temperature pipe for an engine test according to claim 7, wherein: the two sides of the annular opening are both annularly and uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121429440.0U CN216520323U (en) | 2021-06-25 | 2021-06-25 | Internal thermal insulation structure of high-temperature pipeline for engine test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121429440.0U CN216520323U (en) | 2021-06-25 | 2021-06-25 | Internal thermal insulation structure of high-temperature pipeline for engine test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216520323U true CN216520323U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121429440.0U Active CN216520323U (en) | 2021-06-25 | 2021-06-25 | Internal thermal insulation structure of high-temperature pipeline for engine test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216520323U (en) |
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2021
- 2021-06-25 CN CN202121429440.0U patent/CN216520323U/en active Active
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