Magnetic fluid seal torque measuring device, measuring system and measuring method
A magnetic fluid and measuring device technology, which is applied in measuring devices, torque measurement, power measurement, etc., can solve problems such as inability to achieve smooth start, lack of measuring equipment, and unexpected failure of magnetic fluid seals
Active Publication Date: 2022-07-05
TSINGHUA UNIV
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Problems solved by technology
[0002] The magnetic fluid seal is the most ideal sealing form for my country's military fighter jets, radars, aircraft carriers and other cutting-edge equipment. Since the start-up of the magnetic fluid seal involves complex rheological behavior of materials, it is currently impossible to achieve a smooth start, and the magnetic fluid seal is prone to accidental failure. Therefore, it is urgently needed In-depth research on the sealing torque change and rheological reasons during the start-up process
However, the lack of corresponding measuring equipment in related technologies limits the research of magnetic fluid seals
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[0042] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.
[0043] like Figure 1 to Figure 8 As shown, the magnetic fluid sealing torque measuring device 100 (hereinafter referred to as the testing device) according to the embodiment of the present invention includes a housing 1 , a pole piece 6 , an electromagnet 2 , a rotating shaft 3 and a gas nozzle 4 .
[0044] The casing 1 is provided with a through hole 15 , and the through hole 15 passes through the first end and the second end of the casing 1 , and the casing 1 can conduct magnetism. like Figure 1 to Figure 4 As shown, the casing 1 is cylindrical, the through hole 15 is provided in the casing 1, the central axis of the casing ...
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The invention discloses a magnetic fluid sealing torque measuring device, a measuring system and a measuring method, comprising a casing, a pole piece, an electromagnet, a rotating shaft and a gas nozzle. At the second end, the shell is magnetically permeable, the pole piece is provided with an inner hole, the pole piece is fixed in the through hole, and the outer periphery of the pole piece is sealed with the inner peripheral wall of the shell, and the electromagnet is arranged on the second side of the shell. and the electromagnet seals the through hole, the through hole between the pole piece and the electromagnet forms a sealed cavity, the first magnetic pole of the electromagnet communicates with the magnetic circuit of the casing, and the rotating shaft extends from the first end of the casing into the through hole. In the hole, at least part of the rotating shaft is clearance-fitted with the inner hole, the rotating shaft can conduct magnetism, and the rotating shaft and the second magnetic pole of the electromagnet can be connected in a magnetic circuit. The magnetic fluid sealing torque measuring device of the invention facilitates the measurement of the sealing torque and rheological parameters of the magnetic fluid under different magnetic field strengths and different pressure conditions.
Description
technical field [0001] The invention relates to the technical field of magnetic fluid torque measurement, in particular to a magnetic fluid sealing torque measurement device, a measurement system and a measurement method using the magnetic fluid sealing torque measurement device. Background technique [0002] Magnetic fluid seal is the most ideal sealing form for my country's military fighters, radars, aircraft carriers and other cutting-edge equipment. Since the start of magnetic fluid seals involves complex material rheological behavior, it is currently impossible to achieve smooth start, and magnetic fluid seals are prone to unexpected failures. Therefore, it is urgent to The change of sealing torque and rheological reasons during the start-up process are deeply studied. However, the lack of corresponding measurement equipment in the related art limits the research on magnetic fluid sealing. SUMMARY OF THE INVENTION [0003] The present invention aims to solve one of th...
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IPC IPC(8): G01L3/00
CPCG01L3/00
Inventor 李德才李振坤
Owner TSINGHUA UNIV