A cooling device for reducing the temperature of the exciting rod in the thermal modal test
A cooling device and exciting rod technology, applied in the field of cooling devices, can solve the problems of force sensor temperature rise and force sensor damage, etc., to ensure the cooling effect and avoid high temperature damage
Active Publication Date: 2020-10-09
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Problems solved by technology
In order to detect the load transmitted by the vibrating rod, a force sensor is usually set between the vibrating device and the vibrating rod. Since the thermal modal test is carried out in a high temperature environment, the test piece has a relatively high temperature, and the heat on it is easy to pass through the vibrating rod. The vibration rod is transmitted to the force sensor, which causes the temperature of the force sensor to rise and damage the force sensor
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[0050] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the related application, not to limit the application. In addition, it should be noted that, for ease of description, only parts relevant to the present application are shown in the drawings.
[0051] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0052] It should be noted that in the description of this application, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The terms of the indicated direction or positional relationship are based on the direction or positional ...
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The present application belongs to the technical field of excitation rod temperature reduction design in the vibration mode test, and particularly relates to a cooling device for reducing the excitation rod temperature in the thermal mode test. The device comprises: a pillar; a large arm, wherein one end of the large arm is connected with the pillar, the end is called a large arm connecting end, and the large arm can move axially along the pillar and can rotate around the pillar; a small arm, wherein one end of the small arm is connected with the large arm, the end is called a small arm connecting end, and the small arm can move axially along the large arm and can rotate around the large arm; and a wind head. A hollow air cavity is formed in the wind head, and an air inlet hole is opened on the wind head; one end of the air inlet hole is communicated with the air cavity, and the other end is used to communicate with a cooling gas source; the wind head has an air outlet surface, a plurality of air outlet holes are opened on the wind head, one end of each air outlet hole is connected with the air cavity, and the other end extends to the air outlet surface; and the wind head is connected with the small arm, can move axially along the small arm, and can rotate around the small arm.
Description
technical field [0001] The application belongs to the technical field of cooling design of an exciting rod for a thermal modal test, and in particular relates to a cooling device for reducing the temperature of an exciting rod in a thermal modal test. Background technique [0002] The aerodynamic heating of a hypersonic vehicle produces a high-temperature environment, which causes changes in the elastic properties of some structures of the vehicle in this high-temperature environment, causing changes in modal characteristics. In order to evaluate its safety performance, it is necessary to conduct thermal modal tests to explore its vibration Variation of properties with temperature. [0003] At present, when conducting thermal modal tests, a vibrator is usually used to load the test piece with dynamic force, which transmits the load to the test piece through the vibrating rod. In order to detect the load transmitted by the vibrating rod, a force sensor is usually set between...
Claims
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IPC IPC(8): G01M7/02F25D1/00
CPCF25D1/00G01M7/00
Inventor 张雪飞王鑫何乾强李炳秀
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA