CN116951203A - Thermal deformation compensation device for high-temperature fluid pipeline - Google Patents
Thermal deformation compensation device for high-temperature fluid pipeline Download PDFInfo
- Publication number
- CN116951203A CN116951203A CN202311165434.2A CN202311165434A CN116951203A CN 116951203 A CN116951203 A CN 116951203A CN 202311165434 A CN202311165434 A CN 202311165434A CN 116951203 A CN116951203 A CN 116951203A
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- China
- Prior art keywords
- outer sleeve
- thermal deformation
- lining
- compensation device
- lining structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 9
- 239000010425 asbestos Substances 0.000 claims description 6
- 229910052895 riebeckite Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract description 2
- 239000000945 filler Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/26—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
- F16J15/30—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/04—Bellows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention belongs to the field of high-temperature fluid pipelines, and particularly relates to a thermal deformation compensation device for a high-temperature fluid pipeline. According to the invention, the tubular lining and the outer sleeve structure are fixedly connected in a sealing way through the flange table, and the lining and the outer sleeve structure are directly connected in a sliding sealing way, so that a sealing cavity is formed by the lining structure, the outer sleeve structure and the corrugated pipe, and the retractility of the corrugated pipe is effectively utilized; the optimal scheme is also provided that the inner wall surface of the runner is sprayed with a thermal resistance coating, and the heat insulation material is filled in the sealed cavity, so that the high-temperature environment is isolated, and the stability is better. The thermal deformation compensation device provided by the invention can complete free expansion and contraction of a larger distance along the axial direction, effectively improves the thermal deformation problem of a flow passage structure caused by high temperature, has the characteristics of high integration level, high heat sealing reliability, good heat insulation performance and the like, and can be installed in a space with a compact structure.
Description
Technical Field
The invention belongs to the field of high-temperature fluid pipelines, and particularly relates to a thermal deformation compensation device for a high-temperature fluid pipeline.
Background
The high-temperature fluid pipeline relates to the technical fields of petrochemical industry, aerodynamic force, aeroengines, rocket engines and the like, and is an important component part of key mechanical equipment. Taking rocket engine as an example, high temperature, high pressure and strong vibration environment can be generated during operation, so that high temperature fluid pipelines including engine combustion chambers, tail nozzles and the like are required to bear complex aerodynamic forces, aerodynamic heat and mechanical loads, strict requirements are provided for the reliability of an engine structure, and the engine structure is required to have extremely high heat resistance, fatigue resistance and strength. To improve the reliability of the associated high temperature piping structure, there is a need to systematically address the problems involved in design.
First, since the high-temperature fluid pipe needs to be fixed, for the long and thin pipe, a large thermal deformation is generated in the high-temperature environment, if no thermal deformation compensation measures are taken, a very large thermal stress is generated in the inner part of the high-temperature fluid pipe structure, so that the pipe structure is damaged and fails, and accidents are unavoidable. Secondly, the high-temperature fluid pipeline needs to be subjected to sealing treatment to prevent the leakage of high-temperature gas or fluid medium in the high-temperature fluid pipeline, so that the thermal compensation device is required to have good sealing performance; in addition, for high-speed flowing medium, in order to meet the flowing requirement, the shape of the inner wall surface of the fluid pipeline is strictly required, and the inner wall surface of the compensation device is required to be matched with the inner wall surface of the high-temperature fluid pipeline; in addition, in the field of aviation and aerospace, the structural weight is an important index for measuring the performance of an engine, and a thermal compensation device of a high-temperature runner is required to meet the requirement of light weight. Therefore, the development of the thermal deformation compensation device of the high-temperature fluid pipeline meets the requirements of thermal deformation compensation, heat sealing, profile matching in a runner and light structure, and is important for the development of high-temperature fluid pipeline equipment.
Disclosure of Invention
Aiming at the problems or the defects, the invention provides a thermal deformation compensation device for a high-temperature fluid pipeline, which aims to solve a series of problems related to the application of the prior high-temperature fluid pipeline and has the functions of thermal deformation compensation, heat sealing, heat insulation, profile matching in a runner and light structure.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a thermal deformation compensation device for a high-temperature fluid pipeline comprises a lining structure (1), a corrugated pipe (2) and an outer sleeve structure (3).
The lining structure (1) and the outer sleeve structure (3) are tubular, radial equal-height flange bosses are arranged on the outer sides of the lining structure (1), sliding sleeve sections are arranged on the outer sides of the rear ends of the lining structure (1), and sliding sleeves matched with the sliding sleeve sections of the lining structure (1) are arranged on the outer sides of the front ends of the outer sleeve structure (3).
The front end and the rear end of the corrugated pipe (2) are respectively fixed on flange bosses of the lining structure (1) and the outer sleeve structure (3) in a sealing way, and a sliding sleeve section on the outer side of the rear end of the lining structure (1) is sleeved in a sleeve on the front end of the outer sleeve structure (3), so that the lining structure (1) and the outer sleeve structure (3) can slide back and forth along the axial direction of the sliding sleeve; and the lining structure (1), the outer sleeve structure (3) and the corrugated pipe form a closed cavity.
The inner wall surfaces of the pipelines at the rear end of the lining structure (1) and the front end of the jacket structure (3) are provided with diversion slopes which serve as transition molded surfaces of the flow channel of the whole thermal deformation compensation device, so that high-temperature fluid smoothly flows in the flow channel.
Further, the front end face of the outer sleeve structure (3) is provided with a sealing groove, a graphite packing sealing ring (9) is installed in the sealing groove, a plurality of high-temperature alloy screws (7) are used for fixing a sealing pressing block (8) on the front end face of the outer sleeve structure (3), the graphite packing sealing ring (9) is pressed and is in contact with a sliding sleeve section outside the rear end of the inner lining structure (1), and sliding sealing is achieved.
Furthermore, the inner wall surfaces of the lining structure (1) and the outer sleeve structure (3) are both sprayed with a zirconia thermal resistance coating (6) to isolate a high-temperature environment.
Furthermore, the asbestos heat insulation filling material (5) is wrapped by quartz fiber cloth (4) and is filled in a closed cavity formed by the lining structure (1), the outer sleeve structure (3) and the corrugated pipe, so that a high-temperature environment is isolated.
According to the invention, through the design of the transition molded surfaces of the inner flow channels of the inner lining and outer sleeve structures, abrupt changes of the molded surfaces of the inner flow channels are avoided, and high-temperature fluid can smoothly flow in the flow channels. Through the sliding seal design of graphite packing sealing washer to and the sealed fixed bellows structure on inside lining and the overcoat structural flange face, twice seal structure can prevent the leakage of high temperature fluid effectively, and the elasticity that has utilized the bellows has high-efficient messenger's difference in temperature deformation reduces to the influence of pipeline by a wide margin. Zirconia thermal resistance coating is sprayed on the inner wall surface of the runner, and the asbestos heat insulation material is used for filling the closed cavity, so that the high-temperature environment is isolated. Through the technical scheme, the thermal deformation compensation device provided by the invention has a compact structure, and can simultaneously solve the problems of thermal deformation compensation, heat sealing, heat insulation, profile matching in a runner and light structure.
Compared with the prior art, the invention has the beneficial effects that:
1. the thermal deformation compensation device has high integration level, compact structure and good thermal environment adaptability, and can be installed in a limited space with compact structure.
2. The thermal deformation compensation device adopts the thermal resistance coating and the heat insulation filling material, can effectively block heat transfer of high-temperature fluid to the corrugated pipe structure, meets the use requirement of thermal deformation compensation under the high-temperature working condition, and can also prolong the service life.
3. The inner wall surfaces of the inner lining and the outer sleeve structure of the thermal deformation compensation device are designed with transition molded surfaces, so that abrupt changes of the molded surfaces of the inner runner are avoided, and high-temperature fluid can smoothly flow in the runner.
4. The thermal deformation compensation device is provided with the sliding seal and the corrugated pipe sealing device, so that leakage of high-temperature fluid can be effectively avoided, and safe and reliable operation in a high-temperature environment can be ensured.
Drawings
FIG. 1 is a schematic diagram of an axial side view of a thermal deformation compensation device according to the present invention;
FIG. 2 is a cross-sectional view of a thermal deformation compensation device according to the present invention;
FIG. 3 is an enlarged schematic view of a portion of a thermal deformation compensation device according to the present invention;
FIG. 4 is a schematic view of the installation of the sealing press block of the invention.
Reference numerals: the heat-insulating lining comprises a lining structure (1), a corrugated pipe (2), an outer sleeve structure (3), quartz fiber cloth (4), asbestos heat-insulating filler (5), a heat-insulating coating (6) of the lining structure, a high-temperature alloy screw (7), a sealing pressing block (8), a graphite packing sealing ring (9) and a heat-insulating coating (10) of the outer sleeve structure.
Detailed Description
The invention is further described below with reference to the drawings and examples:
a thermal deformation compensation device (shown in figure 1) for a high-temperature fluid pipeline comprises a lining structure (1), a corrugated pipe (2), an outer sleeve structure (3), quartz fiber cloth (4), asbestos heat insulation filling materials (5), a zirconia thermal resistance coating (6) of the lining structure, high-temperature alloy screws (7), a sealing pressing block (8), a graphite packing sealing ring (9) and a zirconia thermal resistance coating (10) of the outer sleeve structure.
As shown in fig. 2 and 3:
the lining structure (1) and the outer sleeve structure (3) are provided with radial equal-height flange bosses, and the front end and the rear end of the corrugated pipe (2) are respectively welded on the bosses of the lining structure (1) and the outer sleeve structure (3) in a sealing way. The sliding sleeve section arranged outside the rear end of the lining structure (1) is sleeved in the sleeve at the front end of the outer sleeve structure (3), and the lining structure (1) and the outer sleeve structure (3) can slide back and forth along the axial direction of the sliding sleeve.
The inner wall surfaces of the flow channels at the rear end of the lining structure (1) and the front end of the jacket structure (3) are provided with flow guiding slopes, so that the section is gradually changed when fluid flows, the condition that the section is suddenly changed cannot occur, and the flow channels of the thermal deformation compensation device form transition molded surfaces through the slopes.
The inner wall surfaces of the lining structure (1) and the outer sleeve structure (3) are sprayed with a zirconia thermal resistance coating.
As shown in fig. 3 and 4:
the front end face of the outer sleeve structure (3) is provided with a sealing groove, a graphite packing sealing ring (9) is installed in the sealing groove, a plurality of high-temperature alloy screws (7) are used for fixing a sealing pressing block (8) on the front end face of the outer sleeve structure (3), the graphite packing sealing ring (9) is pressed and is in contact with a sliding sleeve section outside the rear end of the inner lining structure (1), and sliding sealing is formed. The final lining structure (1), the outer sleeve structure (3) and the corrugated pipe form a closed cavity.
The asbestos heat insulation filler (5) is wrapped by quartz fiber cloth (4) and is filled in a closed cavity formed by the lining structure (1), the outer sleeve structure (3) and the corrugated pipe, as shown in figure 3.
According to the embodiment, the tubular lining and the outer sleeve structure are fixedly connected in a sealing way through the flange table, and the lining and the outer sleeve structure are directly connected in a sliding sealing way, so that a sealing cavity is formed by the lining structure, the outer sleeve structure and the corrugated pipe, and the retractility of the corrugated pipe is effectively utilized; the optimal scheme is also provided that the inner wall surface of the runner is sprayed with a thermal resistance coating, and the heat insulation material is filled in the sealed cavity, so that the high-temperature environment is isolated, and the stability is better. The thermal deformation compensation device provided by the invention can complete free expansion and contraction of a larger distance along the axial direction, effectively improves the thermal deformation problem of a flow passage structure caused by high temperature, has the characteristics of high integration level, high heat sealing reliability, good heat insulation performance and the like, and can be installed in a space with a compact structure.
Claims (4)
1. A thermal deformation compensation device for a high temperature fluid conduit, characterized by: comprises a lining structure (1), a corrugated pipe (2) and an outer sleeve structure (3);
the lining structure (1) and the outer sleeve structure (3) are tubular, radial equal-height flange bosses are arranged on the outer sides of the lining structure (1), sliding sleeve sections are arranged on the outer sides of the rear ends of the lining structure (1), and sliding sleeves matched with the sliding sleeve sections of the lining structure (1) are arranged on the outer sides of the front ends of the outer sleeve structure (3);
the front end and the rear end of the corrugated pipe (2) are respectively fixed on flange bosses of the lining structure (1) and the outer sleeve structure (3) in a sealing way, and a sliding sleeve section on the outer side of the rear end of the lining structure (1) is sleeved in a sleeve on the front end of the outer sleeve structure (3), so that the lining structure (1) and the outer sleeve structure (3) can slide back and forth along the axial direction of the sliding sleeve; the lining structure (1), the outer sleeve structure (3) and the corrugated pipe form a closed cavity;
the inner wall surfaces of the pipelines at the rear end of the lining structure (1) and the front end of the jacket structure (3) are provided with diversion slopes which are used as transition molded surfaces of the flow channel of the whole thermal deformation compensation device.
2. The thermal deformation compensation device for high temperature fluid pipes according to claim 1, wherein: the front end face of the outer sleeve structure (3) is provided with a sealing groove, a graphite packing sealing ring (9) is installed in the sealing groove, a plurality of high-temperature alloy screws (7) are utilized to fix a sealing pressing block (8) on the front end face of the outer sleeve structure (3), the graphite packing sealing ring (9) is pressed and is in contact with a sliding sleeve section outside the rear end of the inner lining structure (1), and sliding sealing is achieved.
3. The thermal deformation compensation device for high temperature fluid pipes according to claim 1, wherein: the inner wall surfaces of the lining structure (1) and the outer sleeve structure (3) are both sprayed with a zirconia thermal resistance coating (6).
4. The thermal deformation compensation device for high temperature fluid pipes according to claim 1, wherein: the airtight cavity is filled with asbestos heat insulation filling materials (5) wrapped by quartz fiber cloth (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311165434.2A CN116951203A (en) | 2023-09-11 | 2023-09-11 | Thermal deformation compensation device for high-temperature fluid pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311165434.2A CN116951203A (en) | 2023-09-11 | 2023-09-11 | Thermal deformation compensation device for high-temperature fluid pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116951203A true CN116951203A (en) | 2023-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311165434.2A Pending CN116951203A (en) | 2023-09-11 | 2023-09-11 | Thermal deformation compensation device for high-temperature fluid pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116951203A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117704077A (en) * | 2024-02-06 | 2024-03-15 | 中国空气动力研究与发展中心空天技术研究所 | Hard connection sealing position compensation structure |
-
2023
- 2023-09-11 CN CN202311165434.2A patent/CN116951203A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117704077A (en) * | 2024-02-06 | 2024-03-15 | 中国空气动力研究与发展中心空天技术研究所 | Hard connection sealing position compensation structure |
| CN117704077B (en) * | 2024-02-06 | 2024-04-12 | 中国空气动力研究与发展中心空天技术研究所 | Hard connection sealing position compensation structure |
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