Linear reciprocating motion high-temperature lubrication test device

Abstract

The invention provides a linear reciprocating motion high-temperature lubrication test device, belongs to the technical field of high-temperature lubrication, and solves the problem that a high-temperature lubrication test is difficult to carry out in a high-pressure gas atmosphere by an existing test method. High-temperature linear reciprocating motion is achieved in a pneumatic coupling mode, and compared with a traditional high-temperature friction test, the high-temperature friction test device has the advantages that a high-temperature lubrication test can be carried out in a pressure environment, the coupling transmission error is small, and the test stroke is easy to adjust.

Description

Technical Field

[0001] The present invention relates to a linear reciprocating motion high temperature lubrication test device, which belongs to the field of high temperature lubrication technology and solves the problem that the existing test method is difficult to implement high temperature lubrication test in a high pressure gas atmosphere. The method can provide a test of high temperature lubrication performance under high temperature or normal temperature conditions. Background Art

[0002] In the metallurgical industry, chemical reactors, and Stirling generators, linear reciprocating motion components need to operate under high temperature conditions in a gas atmosphere. Lubrication measures are the basic condition to ensure the reliable operation of linear reciprocating motion components. Usually, the surface of linear reciprocating motion components is lubricated by lubricating coatings or films such as spraying, coating, and sputtering. Coatings or films are sensitive to working media. Conventional lubrication tests under high temperature conditions usually use methods such as four-ball tests, Timken tests, and ring-fast tests under air or vacuum atmosphere conditions, and lack test methods under real gas atmosphere conditions. Summary of the invention

[0003] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art, and to propose a linear reciprocating motion high-temperature lubrication test device. The linear reciprocating motion high-temperature lubrication test method uses gas pressure fluctuations to drive the motion component to achieve high-temperature linear reciprocating motion, which has the advantage that the test condition is closer to the actual state; at the same time, it has the advantage that the frequency and displacement of the motion component are easy to adjust. It can provide a test method under gas atmosphere conditions for the lubrication characteristics of linear reciprocating motion under high temperature conditions, and provide a solution for the high-temperature lubrication test of linear reciprocating motion.

[0004] The technical solution of the present invention is:

[0005] A linear reciprocating motion high temperature lubrication test device, the high temperature lubrication test device comprising a linear reciprocating motion component 1, a piston cylinder assembly 2, a spring assembly 3, a coupling assembly 4, a pressure wave generator 5 and a high temperature oven 6;

[0006] The linear reciprocating motion component 1 and the spring assembly 3 are assembled in the piston cylinder assembly 2 and become the high temperature test object;

[0007] The high temperature test object is connected to the pressure wave generator 5 placed in the room temperature environment through the coupling assembly 4, and the gas of corresponding pressure is filled into the working medium of set pressure through the coupling assembly 4;

[0008] When working at high temperature, the working frequency and displacement of the linear reciprocating motion component 1 can be conveniently adjusted by adjusting the working frequency and operating amplitude of the pressure wave generator 5;

[0009] By testing the outlet working pressure, working frequency and displacement of the linear reciprocating motion component 1 of the pressure wave generator 5 , basic test data such as friction force can be conveniently tested based on the mass of the linear reciprocating motion component 1 and the stiffness of the spring assembly 3 .

[0010] The linear reciprocating motion component 1 is assembled into one with the piston cylinder assembly 2 and the spring assembly 3 (high temperature motion assembly), and is connected to the pressure wave generator 5 placed in a room temperature environment through the coupling assembly 4, and the gas of corresponding pressure is filled through the coupling assembly 4, and the assembly to be tested is placed in a high temperature oven for tightening;

[0011] During the test, at the test temperature, according to the test purpose, a pressure wave generator 5 generates pressure fluctuations with a certain frequency and amplitude to drive the linear reciprocating motion component 1 to perform linear reciprocating motion in the piston-cylinder assembly 2;

[0012] The surface of the linear reciprocating motion component 1 is formed with a high-temperature wear-resistant lubricating coating to be tested, and the surface of the piston-cylinder assembly 2 is subjected to corresponding wear-resistant or hardening treatment according to the test conditions.

[0013] According to the test purpose, the internal part is filled with working gas of corresponding pressure (such as nitrogen, helium, etc.);

[0014] According to the stroke and frequency of the linear reciprocating motion test, the amplitude and frequency of the pressure fluctuation of the pressure wave generator are adjusted to drive the linear reciprocating motion component 1 to achieve the corresponding operating displacement and frequency.

[0015] The friction force is calculated according to the stroke and frequency of the linear reciprocating motion test, the pressure fluctuation amplitude, and the mass and axial stiffness of the linear reciprocating motion component 1 .

[0016] The pressure wave generator 5 is placed in a room temperature environment and connected to the test object through a connecting pipe.

[0017] The present invention provides a linear reciprocating motion high temperature lubrication test device, which belongs to the field of high temperature lubrication technology and solves the problem that the existing test method is difficult to implement high temperature lubrication test in a high pressure gas atmosphere. The present invention adopts pneumatic coupling to achieve high temperature linear reciprocating motion. Compared with the traditional high temperature friction test, it has the advantages of being able to implement high temperature lubrication test under pressure environment, small coupling transmission error, and easy adjustment of test stroke.

[0018] The beneficial effects of the present invention compared with the prior art are:

[0019] 1) For high-temperature lubrication test of linear reciprocating motion. It can provide friction test of linear reciprocating motion under high-pressure gas atmosphere. Compared with traditional four-ball friction test, Timken test and ring fast test, it provides a convenient and feasible high-temperature lubrication test method under gas pressure conditions;

[0020] 2) The power source such as the pressure wave generator used in the high-temperature lubrication test of linear reciprocating motion can be placed in a room temperature working environment, which reduces the cost of the test system and the requirements for the test power source;

[0021] 3) Compared with the traditional high-temperature lubrication test method, the displacement and frequency of the test object can be quickly adjusted by adjusting the frequency and amplitude of the pressure wave generator 5, which has the advantage of easy adjustment of the frequency and displacement of the moving component 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the test device of the present invention;

[0023] Among them, 1-linear reciprocating motion component, 2-piston cylinder assembly, 3-spring assembly, 4-connecting pipe assembly, 5-pressure wave generator (such as linear compressor, etc.), 6-high temperature oven. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Example

[0026] like Figure 1 As shown, a linear reciprocating motion high temperature lubrication test device, the high temperature lubrication test device comprises a linear reciprocating motion component 1, a piston cylinder assembly 2, a spring assembly 3, a coupling assembly 4, a pressure wave generator 5 and a high temperature oven 6;

[0027] The linear reciprocating motion component 1 and the spring assembly 3 are assembled in the piston cylinder assembly 2 and become the high temperature test object;

[0028] The high temperature test object is connected to the pressure wave generator 5 placed in the room temperature environment through the coupling assembly 4, and the gas of corresponding pressure is filled into the working medium of set pressure through the coupling assembly 4;

[0029] When working at high temperature, the working frequency and displacement of the linear reciprocating motion component 1 can be conveniently adjusted by adjusting the working frequency and operating amplitude of the pressure wave generator 5;

[0030] By testing the outlet working pressure, working frequency and displacement of the linear reciprocating motion component 1 of the pressure wave generator 5 , basic test data such as friction force can be conveniently tested based on the mass of the linear reciprocating motion component 1 and the stiffness of the spring assembly 3 .

[0031] The linear reciprocating motion component 1 is assembled into one with the piston cylinder assembly 2 and the spring assembly 3 (high temperature motion assembly), and is connected to the pressure wave generator 5 placed in a room temperature environment through the coupling assembly 4, and the gas of corresponding pressure is filled through the coupling assembly 4, and the assembly to be tested is placed in a high temperature oven for tightening;

[0032] During the test, at the test temperature, according to the test purpose, a pressure wave generator 5 generates pressure fluctuations with a certain frequency and amplitude to drive the linear reciprocating motion component 1 to perform linear reciprocating motion in the piston-cylinder assembly 2;

[0033] The surface of the linear reciprocating motion component 1 is formed with a high-temperature wear-resistant lubricating coating to be tested, and the surface of the piston-cylinder assembly 2 is subjected to corresponding wear-resistant or hardening treatment according to the test conditions.

[0034] According to the test purpose, the internal part is filled with working gas of corresponding pressure (such as nitrogen, helium, etc.);

[0035] According to the stroke and frequency of the linear reciprocating motion test, the amplitude and frequency of the pressure fluctuation of the pressure wave generator are adjusted to drive the linear reciprocating motion component 1 to achieve the corresponding operating displacement and frequency.

[0036] The friction force is calculated according to the stroke and frequency of the linear reciprocating motion test, the pressure fluctuation amplitude, and the mass and axial stiffness of the linear reciprocating motion component 1 .

[0037] The pressure wave generator 5 is placed in a room temperature environment and connected to the test object through a connecting pipe.

[0038] The present invention provides a linear reciprocating motion high-temperature lubrication test method, which belongs to the field of high-temperature lubrication technology and solves the problem that the existing test method is difficult to implement high-temperature lubrication tests in a high-pressure gas atmosphere. The present invention uses pneumatic coupling to achieve high-temperature linear reciprocating motion. Compared with traditional high-temperature friction tests, the present invention has the ability to implement high-temperature lubrication tests under pressure environments, has small coupling transmission errors, and has the advantages of easy adjustment of the test stroke.

[0039] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A linear reciprocating motion high temperature lubrication test device, characterized in that: The high temperature lubrication test device includes a linear reciprocating motion component, a piston cylinder assembly, a spring assembly, a coupling assembly, and a pressure wave generator; The linear reciprocating motion parts and spring components are assembled in the piston cylinder assembly to become the high temperature test object, and the test object is in a sealed state; The high temperature test object is connected to a pressure wave generator placed in a room temperature environment through a coupling assembly, and a working medium of set pressure is filled into the coupling assembly; The high temperature oven is used to provide a high temperature environment for high temperature test objects.

2. A linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: When working at high temperature, the operating frequency and displacement of the linear reciprocating motion component are adjusted by adjusting the operating frequency and operating amplitude of the pressure wave generator.

3. A linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: By testing the outlet working pressure, working frequency and displacement of the linear reciprocating motion component of the pressure wave generator, the friction test data is tested based on the mass of the linear reciprocating motion component and the stiffness of the spring assembly.

4. A linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: The linear reciprocating motion component is assembled into one with the piston cylinder assembly and the spring assembly, and is connected to a pressure wave generator placed in a room temperature environment through a coupling assembly. The gas of corresponding pressure is filled through the coupling assembly, and the component to be tested is placed in a high-temperature oven for tightening.

5. The linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: During the test, at the test temperature, a pressure wave generator is used to generate pressure fluctuations of set frequency and amplitude according to the test purpose to drive the linear reciprocating motion component to perform linear reciprocating motion in the piston-cylinder assembly.

6. A linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: The surface molding of linear reciprocating motion parts requires the high-temperature wear-resistant lubricating coating to be tested, and the surface of the piston-cylinder assembly is subjected to corresponding wear-resistant or hardening treatment according to the test conditions.

7. The linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: The interior is filled with working gas of corresponding pressure according to the test purpose.

8. The linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: According to the stroke and frequency of the linear reciprocating motion test, the amplitude and frequency of the pressure fluctuation of the pressure wave generator are adjusted to drive the linear reciprocating motion component to achieve the corresponding operating displacement and frequency.

9. The linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: The friction force is calculated based on the stroke and frequency of the linear reciprocating motion test, the pressure fluctuation amplitude, and the mass and axial stiffness of the linear reciprocating motion components.

10. The linear reciprocating motion high temperature lubrication test device according to claim 1, characterized in that: The pressure wave generator is placed in a room temperature environment and connected to the test object through a connecting pipe.

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