A high-temperature cavity cooling vibration comprehensive test device

Abstract

The present invention discloses a high-temperature cavity cooling vibration comprehensive test device, comprising a vibration table, a high-temperature box, a heat-insulating column, a pump body, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, wherein the heat-insulating column is located on the upper side of the vibration table, a test piece is fixed on the heat-insulating column, the third pipeline, the fourth pipeline and the test piece are located in the high-temperature box, a first channel and a second channel are arranged in the heat-insulating column, the first pipeline, the first channel, the third pipeline, the through hole of the test piece, the fourth pipeline, the second channel and the second pipeline are connected end to end in sequence, and the pump body pumps the cooling medium into the first pipeline. The device can realize the comprehensive environmental vibration reliability test of different temperatures inside and outside the test piece, with high precision and good reliability.

Description

Technical Field

[0001] The invention relates to the technical field of vibration testing, and in particular to a high-temperature cavity cooling vibration comprehensive testing device. Background Art

[0002] In the aerospace field, especially in the engine development process, environmental reliability tests under extreme conditions are often involved. For example, a component needs to be tested for vibration in a high temperature (800-900°C) environment. However, for some components with internal cooling media for heat dissipation (relatively low temperature, such as 200-500°C), such an environment is too harsh, resulting in unsatisfactory test results or deviations from the actual situation. Therefore, it is hoped that the real situation can be simulated as much as possible during the test process in order to accurately reflect the actual quality of the sample.

[0003] At present, it is difficult to implement comprehensive environmental vibration reliability tests at different temperatures inside and outside the sample. Solving this problem can lay a good foundation for the implementation of related types of tests. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a high-temperature cavity cooling vibration comprehensive test device, which can realize a comprehensive environmental vibration reliability test of different temperatures inside and outside the test piece with high precision and good reliability.

[0005] In order to solve the above technical problems, the present invention provides a high-temperature cavity cooling vibration comprehensive test device, including a vibration table, a high-temperature box, an insulating column, a pump body, a first pipe, a second pipe, a third pipe and a fourth pipe, the insulating column is located on the upper side of the vibration table, a test piece is fixed on the insulating column, the third pipe, the fourth pipe and the test piece are located in the high-temperature box, a first channel and a second channel are arranged in the insulating column, the first pipe, the first channel, the third pipe, the through hole of the test piece, the fourth pipe, the second channel and the second pipe are connected end to end in sequence, and the pump body pumps the cooling medium into the first pipe.

[0006] Preferably, a water chiller is further included, and a heat insulation channel is also provided in the heat insulation column, and the water chiller is connected to the heat insulation channel.

[0007] Preferably, the thermal insulation channel includes a liquid inlet, a liquid outlet, an upper cavity, a lower cavity, a first thermal insulation channel and multiple second thermal insulation channels, the first thermal insulation channel and the second thermal insulation channel are vertically arranged, the liquid inlet is connected to the lower cavity, the upper end of the second thermal insulation channel is connected to the upper cavity, the lower end of the second thermal insulation channel is connected to the lower cavity, the upper end of the first thermal insulation channel is connected to the upper cavity, the lower end of the first thermal insulation channel is connected to the liquid outlet, and the liquid inlet and the liquid outlet are respectively connected to the chiller.

[0008] Preferably, the first thermal insulation channel is located at the center of the thermal insulation column, and the second thermal insulation channel is evenly arranged around the first thermal insulation channel.

[0009] Preferably, the first channel and the second channel are vertically arranged, and the first channel and the second channel are located on both sides of the first heat insulation channel.

[0010] Preferably, a valve body is provided on the first pipeline.

[0011] Preferably, the cooling medium is gas or cooling liquid.

[0012] Preferably, a cooling tank is further included, and the second pipeline is connected to the cooling tank.

[0013] Preferably, it also includes a mounting platform for mounting the test piece, and the mounting platform is fixedly arranged on the upper side of the heat-insulating platform column.

[0014] Preferably, a thermocouple temperature measuring probe for collecting the temperature of the test piece is also included.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention is provided with a vibration table, a high temperature box, an insulation column and a pump body. The insulation column is located on the upper side of the vibration table. The cooling medium is pumped into the through hole of the test piece through the insulation column by the pump body. Since the test piece is located in the high temperature box, a comprehensive environmental vibration reliability test of different temperatures inside and outside the test piece can be realized, which is convenient for accurately detecting the actual quality of the test piece, with high precision and good reliability, compact structure and good stability.

[0017] 2. The pump body of the present invention can pump cooling media of different types and flow rates into the test piece, thereby simulating different working conditions, facilitating adjustment and testing, and having a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the vibration table and the heat insulation column of the present invention;

[0020] Figure 3 It is a schematic diagram of the cooling medium flow in the heat-insulating column;

[0021] Figure 4 This is a schematic diagram of the cold water flow in the insulation column;

[0022] Figure 5 Schematic diagram of cold water and cooling medium in the insulation column.

[0023] Explanation of the numbers in the figure: 10, vibration table; 11, mounting table; 20, insulation column; 21, first channel; 22, second channel; 23, liquid inlet; 24, lower cavity; 25, second insulation channel; 26, upper cavity; 27, first insulation channel; 28, liquid outlet; 30, high temperature box; 40, pump body; 41, valve body; 42, first pipeline; 43, second pipeline; 44, third pipeline; 45, fourth pipeline; 50, chiller; 60, test piece; 70, thermocouple temperature probe; 81, cooling medium. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0025] Reference Figure 1-Figure 5 As shown, the present invention discloses a high-temperature cavity cooling vibration comprehensive test device, which is used to test a test piece 60 through which a cooling medium 81 passes, and a through hole is opened in the test piece 60, including a vibration table 10, a high-temperature box 30, an insulation column 20, a pump body 40, a first pipeline 42, a second pipeline 43, a third pipeline 44 and a fourth pipeline 45. The insulation column 20 is located on the upper side of the vibration table 10, and the test piece 60 is fixed on the insulation column 20. The third pipeline 44, the fourth pipeline 45 and the test piece 60 are located in the high-temperature box 30. The high-temperature box 30 simulates a high-temperature environment, which is convenient for high-temperature vibration testing of the test piece 60.

[0026] The first channel 21 and the second channel 22 are provided in the heat-insulating column 20, and the first pipe 42, the first channel 21, the third pipe 44, the through hole of the test piece 60, the fourth pipe 45, the second channel 22 and the second pipe 43 are connected end to end in sequence, and the pump body 40 pumps the cooling medium 81 into the first pipe 42. Since the pump body 40 pumps the cooling medium 81 into the first pipe 42, the cooling medium 81 flows through the first pipe 42, the first channel 21, the third pipe 44, the through hole of the test piece 60, the fourth pipe 45, the second channel 22 and the second pipe 43 in sequence. In this way, the test in which the coolant passes through the test piece 60 and vibrates in a high temperature environment can be simulated, and the accuracy of the test result is higher, so that the comprehensive environmental vibration reliability test of different temperatures inside and outside the sample can be realized.

[0027] The present invention also includes a water chiller 50, and a heat-insulating channel is also provided in the heat-insulating column 20, and the water chiller 50 is connected to the heat-insulating channel. The low-temperature water (about 18-20°C) produced by the water chiller 50 passes through the heat-insulating column 20, and the heat conducted to the column from the high-temperature chamber end is taken away by the low-temperature water flow. In this way, the vibration table 10 is isolated from high temperature, the equipment use environment is improved, and the equipment is prevented from being damaged by a high-temperature environment. Since the first channel 21 and the second channel 22 are also provided in the heat-insulating column 20, the first channel 21 and the second channel 22 of the heat-insulating column 20 are used to pass the cooling medium 81 into the test piece 60, which eliminates the difficulty and trouble of equipment modification or re-customization, and effectively saves time and money costs.

[0028] The heat-insulating channel includes a liquid inlet 23, a liquid outlet 28, an upper cavity 26, a lower cavity 24, a first heat-insulating channel 27 and a plurality of second heat-insulating channels 25. The first heat-insulating channel 27 and the second heat-insulating channel 25 are vertically arranged. The liquid inlet 23 is in communication with the lower cavity 24. The upper end of the second heat-insulating channel 25 is in communication with the upper cavity 26. The lower end of the second heat-insulating channel 25 is in communication with the lower cavity 24. The upper end of the first heat-insulating channel 27 is in communication with the upper cavity 26. The lower end of the first heat-insulating channel 27 is in communication with the liquid outlet 28. The liquid inlet 23 and the liquid outlet 28 are respectively connected to the chiller 50. The liquid inlet 23 is in communication with the lower cavity 24. In this way, the cold water 80 can enter the lower cavity 24 from the liquid inlet 23, and then enter the upper cavity 26 from the lower cavity 24 through the plurality of second heat-insulating channels 25. Since there are multiple second heat-insulating channels 25 , the multiple second heat-insulating channels 25 can achieve uniform distribution of the cold water 80 , thereby achieving uniform heat insulation. The cold water in the upper cavity 26 flows into the first heat-insulating channel 27 and then flows out from the liquid outlet 28 .

[0029] The first heat insulation channel 27 is located at the center of the heat insulation column 20, and the second heat insulation channel 25 is evenly arranged around the first heat insulation channel 27. In this way, uniform heat insulation can be achieved to prevent the high temperature box 30 from transferring heat to the vibration table 10 and damaging the equipment.

[0030] The first channel 21 and the second channel 22 are vertically arranged, and the first channel 21 and the second channel 22 are located at two sides of the first heat insulation channel 27 .

[0031] A valve body 41 is provided on the first pipe 42. The valve body 41 controls the flow rate of the cooling medium 81.

[0032] The valve body 41 may be a throttle valve.

[0033] The cooling medium 81 is a gas or a cooling liquid. The gas may be cold air.

[0034] The present invention further comprises a cooling tank, and the second pipe 43 is connected to the cooling tank. The cooling medium 81 flows into the cooling tank through the second pipe 43. If the cooling medium 81 is gas, the gas flowing out of the second pipe 43 can enter the cooling tank for cooling.

[0035] The present invention further comprises a mounting platform 11 for mounting the test piece 60 , and the mounting platform 11 is fixedly arranged on the upper side of the heat-insulating platform column 20 . The mounting platform 11 is convenient for fixing the test piece 60 .

[0036] The present invention further comprises a thermocouple temperature measuring probe 70 for collecting the temperature of the test piece 60 , which facilitates collecting the temperature of the test piece 60 .

[0037] Specifically, in a test environment, a high temperature environment of 870°C is applied to the outside of the specimen 60, and air at 300-400°C is passed through the specimen, and a cyclic sweep frequency vibration test of a specified magnitude is applied at the same time to verify the vibration resistance of the solder joints of the specimen under such an environment. The test system is based on an ES-10 model electric vibration table 10, and the heat-insulating column 20 is installed on the moving coil, and one end is extended into the high-temperature box 30 to connect the installation tool and the specimen 60. The stainless steel bellows is used for the cooling connection of the specimen. Since air is used as the cooling medium 81, the air source can be a large-capacity air compressor, that is, the pump body 40 is an air compressor. A pressure reducing valve is added to the rear end of the air compressor output port and then connected to the heat-insulating column 20, and the outlet at the lower end of the column is connected to the cooling water pool with a stainless steel bellows to cool the high-temperature exhaust gas of the test. A thermocouple temperature probe 70 is connected at the outlet of the specimen 60, and the temperature measuring line is led out from the outlet window at the upper end of the high-temperature box 30 for wiring. Finally, the heat-insulating column 20 and the chiller 50 are connected with a hose, and the system is debugged to ensure that there is no leakage in each passage, and protective measures are taken around the test equipment to prevent personnel from being scalded by high temperature.

[0038] It has been verified through actual tests that the temperature of the cooling air flowing through the sample can be well controlled by controlling the output pressure of the pressure reducing valve, while not affecting the temperature and vibration test in the high temperature box 30. The function of temperature control and cooling inside the sample during the high temperature vibration test is achieved, and gas or liquid cooling medium 81 can be introduced into the sample according to actual test requirements.

[0039] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A high-temperature cavity cooling vibration comprehensive test device, which is used to test a test piece with a cooling medium passing through it, wherein a through hole is opened through the test piece, and is characterized in that: It includes a vibration table, a high temperature box, a heat-insulating column, a pump body, a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, wherein the heat-insulating column is located on the upper side of the vibration table, a test piece is fixed on the heat-insulating column, the third pipeline, the fourth pipeline and the test piece are located in the high temperature box, a first channel and a second channel are arranged in the heat-insulating column, the first pipeline, the first channel, the third pipeline, the through hole of the test piece, the fourth pipeline, the second channel and the second pipeline are connected end to end in sequence, and the pump body pumps the cooling medium into the first pipeline; It also includes a water chiller, and a heat insulation channel is also provided in the heat insulation column, and the water chiller is connected to the heat insulation channel; The heat-insulating channel comprises a liquid inlet, a liquid outlet, an upper cavity, a lower cavity, a first heat-insulating channel and a plurality of second heat-insulating channels, the first heat-insulating channel and the second heat-insulating channel are vertically arranged, the liquid inlet is communicated with the lower cavity, the upper end of the second heat-insulating channel is communicated with the upper cavity, the lower end of the second heat-insulating channel is communicated with the lower cavity, the upper end of the first heat-insulating channel is communicated with the upper cavity, the lower end of the first heat-insulating channel is communicated with the liquid outlet, and the liquid inlet and the liquid outlet are respectively connected to the chiller; A valve body is arranged on the first pipeline.

2. The high temperature cavity cooling vibration comprehensive test device according to claim 1, characterized in that: The first thermal insulation channel is located at the center of the thermal insulation column, and the second thermal insulation channel is evenly arranged around the first thermal insulation channel.

3. The high temperature cavity cooling vibration comprehensive test device according to claim 2, characterized in that: The first channel and the second channel are vertically arranged, and the first channel and the second channel are located on both sides of the first heat insulation channel.

4. The high temperature cavity cooling vibration comprehensive test device according to claim 1, characterized in that: The cooling medium is gas or cooling liquid.

5. The high temperature cavity cooling vibration comprehensive test device according to claim 1, characterized in that: A cooling tank is also included, and the second pipeline is connected to the cooling tank.

6. The high temperature cavity cooling vibration comprehensive test device according to claim 1, characterized in that: It also includes a mounting platform for mounting the test piece, and the mounting platform is fixedly arranged on the upper side of the heat-insulating platform column.

7. The high temperature cavity cooling vibration comprehensive test device according to claim 1, characterized in that: It also includes a thermocouple temperature probe for collecting the temperature of the test piece.

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