A device and method for measuring the permeability of circular porous materials
A porous material and permeability technology, which is applied in the field of devices for measuring the permeability of annular porous materials, can solve problems such as surface clogging, large differences in actual permeability of measurement results, and influence on actual permeability of materials, so as to achieve accurate pressure, Guaranteed tightness, good effect of sealing gas
Active Publication Date: 2021-01-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
If you continue to measure the flat material without measuring the processed ring, there will be a large difference between the measurement result and the actual permeability. This is because the porous material (such as graphite, porous metal, etc.) is processed into a circular thrust In the process of bearings, the phenomenon of surface clogging inevitably occurs due to machining, which affects the actual permeability of materials. Therefore, it is necessary to develop a device for measuring the permeability of porous materials for thrust ring bearings.
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[0050]The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0051] Such as figure 2 , image 3 , Figure 5 and Figure 6 As shown, a device for measuring the permeability of annular porous materials provided by the present invention includes a main body part 1, the main body part 1 is a circular cylindrical structure, the middle part of the main body part 1 is a stepped through hole, and the main body The upper end of the part 1 is connected with the upper end cover 2 to form a pressure stabilizing chamber 7, the lower end of the main part 1 is connected with the lower end cover 3, the inside of the main part 1 is connected with the inner ring 4, and the middle of the inner ring 4 is connected with the boss 5. The upper end surface of the table 5 is provided with a porous member 6 to be inspected.
[0052] Such as Figure 4 As shown, the end face of the upper end cover 2 protrudes downward to form an ann...
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The invention discloses a device for measuring the permeability of an annular porous material, which comprises a main body part, the main body part is an annular cylindrical structure, the middle part of the main part is a stepped through hole, the upper end of the main part and the upper end The cover is connected to form a pressure stabilizing chamber, the lower end of the main part is connected with the lower end cover, the inside of the main part is connected with the inner ring, the middle of the inner ring is connected with the boss, and the upper end of the boss is provided with a porous part to be detected. The device for measuring the permeability of circular porous materials provided by the invention has the advantages of simple structure, convenient use, low manufacturing cost and accurate measurement data.
Description
technical field [0001] The invention belongs to the technical field of material testing, and in particular relates to a device and method for measuring the permeability of circular porous materials. Background technique [0002] Porous material refers to a material with a network structure composed of interpenetrating, closed or semi-closed pores. Compared with dense materials, the remarkable feature of porous materials is that they have a large number of pores inside. And a large number of internal pores make porous materials have many excellent characteristics, such as small specific gravity, large specific surface, good energy absorption, low thermal conductivity, high heat transfer and heat dissipation capacity, good sound absorption, and excellent permeability. [0003] With the rapid development of precision, ultra-precision machining, aerospace and atomic energy and other fields, the requirements for bearings are getting higher and higher. Traditional rolling bearing...
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IPC IPC(8): G01N15/08
Inventor 王伟张敏崔海龙蒋云峰何林山
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA