CN112642504A - Heating device capable of continuously realizing radial gradient temperature difference of wheel disc - Google Patents
Heating device capable of continuously realizing radial gradient temperature difference of wheel disc Download PDFInfo
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- CN112642504A CN112642504A CN202011367053.9A CN202011367053A CN112642504A CN 112642504 A CN112642504 A CN 112642504A CN 202011367053 A CN202011367053 A CN 202011367053A CN 112642504 A CN112642504 A CN 112642504A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
Abstract
The application provides a sustainable heating apparatus who realizes the radial gradient difference in temperature of rim plate, heating apparatus includes disk body heat preservation (4), lower disk body heat preservation (5), heats ring (6), heart of a plate cooling device (8) and disk body cooling device (9), wherein: the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5) are both of annular plate structures, and a cavity structure is formed between the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5) and used for mounting the wheel disc; n heating rings (6) are arranged between the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5), the heating rings (6) are of circular ring structures, and annular heating wires are arranged on the heating rings (6) and used for heating the wheel disc; the center of a circle of the upper tray body heat-insulating layer (4) is provided with a wheel disc mounting shaft, and the center of a circle of the lower tray body heat-insulating layer (5) is provided with a tray center cooling device (8) and a tray body cooling device (9).
Description
Technical Field
The application relates to the field of aircraft engines, in particular to a heating device capable of continuously realizing radial gradient temperature difference of a wheel disc.
Background
The strength test of the disk of the aero-engine is a research and examination test subject which must be developed in the engine development process, the main test aim is to simulate the real working state of the disk on a disk tester, examine the strength and service life reserve of the disk under corresponding working conditions and provide test data support for service setting. When the engine works, the temperature of the wheel disc is gradually reduced from the disc edge to the disc center, the temperature difference between the disc edge and the disc center can reach 200 ℃, the method is limited to the existing wheel disc test heating control technology, the wheel disc strength test is designed to be mostly equivalent to a uniform temperature field, but the evaluation result can be influenced when the difference with the actual working condition is larger, particularly in a low-cycle test, the test result with larger difference with the engine state can be caused, and the test is invalid. On a wheel disc tester, in order to ensure the accuracy of the test, the same temperature gradient field in the service of the wheel disc must be truly reproduced.
The conventional heating device for the strength test of the wheel disc in China is a common upper and lower furnace disc type universal large-space radiation heating device, and is suitable for carrying out over-rotation and low-cycle tests on wheel discs with different structures. The invention patent CN110987390A provides a rotary fatigue test device capable of realizing a turbine blade gradient temperature field, which adopts electromagnetic induction heating to rapidly heat a turbine blade, and adopts a cooling water cooling heat dissipation mode for a turbine disk body to realize the temperature gradient between the blade and the disk body, but the temperature of the disk body has no specific control target value. The device is only suitable for heating the rotating blades, but cannot be used for a wheel disc with a larger diameter.
At present, a common method for establishing a large-size wheel disc gradient temperature field at home and abroad is to add a path of cooling medium (gas or water) to a disc center, take away heat of the disc center, and heat from the disc edge part at the same time to form the gradient temperature field. But the size of the position of the disk center is small, the structure of the cooling device is limited, and the area influenced by the cooling medium is limited; it is difficult to form a more sustained and stable gradient temperature field.
The invention patent CN 1068397718 provides a vertical rotor heating device and a system, the device adopts a disc edge heating mode, extends into a disc core cavity through a cooling device (3), reduces the temperature of the disc core part, and meets the requirement of the temperature difference between the disc core and the disc edge through a heat shield (1) between the disc core and the disc edge. The device can meet the requirement of temperature difference between the disk center and the disk edge of the wheel disk in a short time, but cannot form gradient temperature difference of stable change from the disk center to the disk edge; in a long-time heating test, because the heating device has a good heat preservation effect, after the heating device is heated for a long time, redundant heat in the device cannot be dissipated in time, and the temperature of the plate body tends to be uniform gradually, so that a gradient temperature field which changes stably cannot be formed from the plate center to the plate edge for a long time. The structural schematic diagram of the prior gradient warming device is shown in figure 1.
Therefore, in the prior art, in the strength test of the aero-engine wheel disc, the problem that the wheel disc is difficult to maintain for a long time after gradient temperature is formed in the radial direction of the wheel disc in the rotating and heating process is solved.
Disclosure of Invention
In order to solve the technical problem, the application provides a heating apparatus capable of continuously realizing the temperature difference of the radial gradient of the wheel disc, and the gradient temperature formed in the radial direction of the wheel disc can be kept for a long time.
The application provides a sustainable heating apparatus who realizes the radial gradient difference in temperature of rim plate, heating apparatus includes disk body heat preservation (4), lower disk body heat preservation (5), heats ring (6), heart of a plate cooling device (8) and disk body cooling device (9), wherein:
the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5) are both of annular plate structures, and a cavity structure is formed between the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5) and used for placing the wheel disc; n heating rings (6) are arranged between the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5), the heating rings (6) are of a ring structure, and annular heating wires are arranged on the heating rings (6) and used for heating the wheel disc; a wheel disc mounting shaft is arranged at the circle center of the upper disc body heat-insulating layer (4), a disc center cooling device (8) and a disc body cooling device (9) are arranged at the circle center of the lower disc body heat-insulating layer (5), the disc center cooling device (8) is of a cylindrical structure formed by spirally winding a pipeline, the disc body cooling device (9) is of a disc structure formed by spirally winding a pipeline, the disc center cooling device (8) is arranged at the circle center of the disc body cooling device (9), and cooling media are filled in the disc center cooling device (8) and the disc body cooling device (9); a plurality of heat dissipation holes (7) are formed in the upper tray body heat insulation layer (4) and the lower tray body heat insulation layer (5); each warming ring (6) is provided with a temperature measuring hole (10).
Specifically, the cooling medium includes cooling water or cooling air.
Specifically, the number of the warming rings (6) is set according to the thickness of the wheel disc.
Specifically, the heating temperature range of the heating ring (6) is 300-800 ℃.
Specifically, the cooling temperature range of the cooling medium is 10 to 30 degrees.
Specifically, the diameters of the upper tray body heat-insulating layer (4), the lower tray body heat-insulating layer (5) and the heating ring (6) are the same.
Specifically, the shapes of the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5) are set according to the shape of the wheel disc.
Specifically, the cavity of the wheel disc extends into the disc center cooling device (8), and the gap between the wheel disc and the disc center cooling device (8) is 5-10 mm;
the wheel disc is placed on the disc body cooling device (9), and the gap between the wheel disc and the disc body cooling device (9) is 5-8 mm.
To sum up, this application provides a heating apparatus who lasts and realize the radial gradient difference in temperature of rim plate can be at rotatory heating test in-process, through in the heating apparatus space that is fit for the rim plate, with unnecessary heat effluvium and adjust rim plate cooling device in the space, has reached rim plate radial direction heat balance, and realizes rim plate radial direction gradient temperature and lasts stable experimental temperature field.
Drawings
FIG. 1 is a schematic representation of the results of a prior art gradient warming apparatus;
FIG. 2 is a schematic structural diagram of a heating device capable of continuously realizing radial gradient temperature difference of a wheel disc provided by the invention;
wherein: 1-a heat shield; 2-a wheel disc; 3-a cooling device; 4-upper plate body heat preservation layer; 5-lower disk body heat-insulating layer; 6-heating ring; 7-heat dissipation holes; 8-a core cooling device; 9-a plate body cooling device; 10-temperature measuring hole.
Detailed Description
The invention still adopts a structure for heating from the disc edge, the heating device adopts a sectional type, heating rings with different heights are designed, and heating wires are arranged on the heating rings; the upper and lower tray bodies of the heating device are respectively provided with uniform heat dissipation holes; the cooling device with two inlets and two outlets is designed, one way of cooling disc core and the other way of cooling disc body can accurately control the flow and pressure of the cooling medium. The structure of the gradient heating device of the invention is shown in figure 2.
The invention is composed of a heat-insulating layer, a heating ring, heat dissipation holes, a temperature measuring area and a cooling device. The cooling device is fixed on the lower disc body of the device in a mechanical fixing mode, and two joints for two supplies of cooling medium are reserved, so that the control of different cooling flow and pressure of the disc center or the disc body is facilitated; a wiring terminal is reserved outside each heating environment-friendly temperature layer to supply power to the heating element, the heating power of each heating ring can be independently controlled, and a temperature measuring hole is formed in the accessory of the heating element; the upper and lower tray bodies of the device are uniformly provided with heat dissipation holes so as to dissipate redundant heat of the tray core.
In the rotating member gradient heating test, can be according to different rim plate thickness, select the different ring 6 that heats of installation, ensure that the rim plate begins to heat from the rim in less space, real-time regulation heating power, in order to improve heating efficiency, and can be better effectively effluvium with the unnecessary heat of dish heart, again according to rim plate gradient temperature requirement, adjust the flow of the coolant of dish heart and disk body, pressure, take away the partial heat of dish heart and disk body, and then form the gradient temperature difference of the stable change of dish heart to rim plate, establish the temperature field of the radial gradient temperature of the rim plate that lasts stable.
The invention can also realize the temperature field test of the wheel disc.
The method can be applied to the gradient temperature field heating test of the strength test of the aircraft engine wheel disc.
Claims (8)
1. The utility model provides a sustainable heating apparatus who realizes the radial gradient difference in temperature of rim plate, a serial communication port, heating apparatus includes disk body heat preservation (4), lower disk body heat preservation (5), heats ring (6), heart of a plate cooling device (8) and disk body cooling device (9), wherein:
the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5) are both of annular plate structures, and a cavity structure is formed between the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5) and used for placing the wheel disc; n heating rings (6) are arranged between the upper disc body heat-insulating layer (4) and the lower disc body heat-insulating layer (5), the heating rings (6) are of circular ring structures, and annular heating wires are arranged on the heating rings (6) and used for heating the wheel disc; a wheel disc mounting shaft is arranged at the circle center of the upper disc body heat-insulating layer (4), a disc center cooling device (8) and a disc body cooling device (9) are arranged at the circle center of the lower disc body heat-insulating layer (5), the disc center cooling device (8) is of a cylindrical structure formed by spirally winding a pipeline, the disc body cooling device (9) is of a disc structure formed by spirally winding a pipeline, the disc center cooling device (8) is arranged at the circle center of the disc body cooling device (9), and cooling media are filled in the disc center cooling device (8) and the disc body cooling device (9); a plurality of heat dissipation holes (7) are formed in the upper tray body heat insulation layer (4) and the lower tray body heat insulation layer (5); each warming ring (6) is provided with a temperature measuring hole (10).
2. A heating device as claimed in claim 1, characterized in that the cooling medium comprises cooling water and cooling air.
3. Heating device according to claim 1, characterized in that the number of heating rings (6) is set according to the thickness of the wheel disc.
4. Heating device according to claim 1, characterized in that the heating ring (6) has a heating temperature in the range of 300-800 degrees.
5. A heating device as claimed in claim 1, characterized in that the cooling temperature of the cooling medium is in the range 10 degrees to 30 degrees.
6. The heating device according to claim 1, wherein the diameters of the upper tray body heat-insulating layer (4), the lower tray body heat-insulating layer (5) and the heating ring (6) are the same.
7. The heating apparatus according to claim 1, wherein the upper and lower disk body heat-insulating layers (4, 5) are shaped according to the shape of a wheel disk.
8. Heating device according to claim 1, characterized in that the cavity of the wheel disc extends into the core cooling device (8), the clearance between the wheel disc and the core cooling device (8) being 5-10 mm;
the wheel disc is placed on the disc body cooling device (9), and the gap between the wheel disc and the disc body cooling device (9) is 5-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011367053.9A CN112642504B (en) | 2020-11-27 | 2020-11-27 | Heating device capable of continuously realizing radial gradient temperature difference of wheel disc |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011367053.9A CN112642504B (en) | 2020-11-27 | 2020-11-27 | Heating device capable of continuously realizing radial gradient temperature difference of wheel disc |
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| CN112642504A true CN112642504A (en) | 2021-04-13 |
| CN112642504B CN112642504B (en) | 2022-05-27 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4820358A (en) * | 1987-04-01 | 1989-04-11 | General Electric Company | Method of making high strength superalloy components with graded properties |
| CN204389152U (en) * | 2015-01-04 | 2015-06-10 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of vertical rotor exerciser with core cooling device |
| CN104897714A (en) * | 2015-04-29 | 2015-09-09 | 东方电气集团东方汽轮机有限公司 | Gas turbine thermal barrier coating efficient-thermal cycle performance testing apparatus and testing method thereof |
| CN106839771A (en) * | 2017-02-23 | 2017-06-13 | 中国航发沈阳发动机研究所 | A kind of vertical rotor heating apparatus and system |
| CN110243483A (en) * | 2019-06-24 | 2019-09-17 | 中国航发动力股份有限公司 | A kind of hot rotatory test temperature measuring equipment of engine rotor part and temp measuring method |
| CN111707529A (en) * | 2020-05-25 | 2020-09-25 | 清华大学 | Thermal gradient mechanical fatigue test system |
-
2020
- 2020-11-27 CN CN202011367053.9A patent/CN112642504B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4820358A (en) * | 1987-04-01 | 1989-04-11 | General Electric Company | Method of making high strength superalloy components with graded properties |
| CN204389152U (en) * | 2015-01-04 | 2015-06-10 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of vertical rotor exerciser with core cooling device |
| CN104897714A (en) * | 2015-04-29 | 2015-09-09 | 东方电气集团东方汽轮机有限公司 | Gas turbine thermal barrier coating efficient-thermal cycle performance testing apparatus and testing method thereof |
| CN106839771A (en) * | 2017-02-23 | 2017-06-13 | 中国航发沈阳发动机研究所 | A kind of vertical rotor heating apparatus and system |
| CN110243483A (en) * | 2019-06-24 | 2019-09-17 | 中国航发动力股份有限公司 | A kind of hot rotatory test temperature measuring equipment of engine rotor part and temp measuring method |
| CN111707529A (en) * | 2020-05-25 | 2020-09-25 | 清华大学 | Thermal gradient mechanical fatigue test system |
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