Experimental system for measuring friction loss of high-pressure fluid in rotor-static gap and working method of experimental system

A fluid friction and experimental system technology, applied in measuring devices, testing wear resistance, instruments, etc., can solve the problems of difficult fluid friction loss and bearing friction loss, reduce the prediction accuracy of friction loss model, and reduce the technical difficulty of shaft end sealing. , to achieve the effect of easy operation, eliminating errors and ensuring accuracy

Pending Publication Date: 2022-08-02
XI AN JIAOTONG UNIV
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Problems solved by technology

[0003] At this stage, there are the following problems in the study of fluid friction loss in the static and rotational gap: 1) In the previous experimental system of friction loss, it is difficult to distinguish fluid friction loss from bearing friction loss. In the friction loss of the fluid in the sta

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  • Experimental system for measuring friction loss of high-pressure fluid in rotor-static gap and working method of experimental system
  • Experimental system for measuring friction loss of high-pressure fluid in rotor-static gap and working method of experimental system

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Embodiment Construction

[0039] The present invention is described in further detail below in conjunction with the accompanying drawings and embodiments, and its content is to explain rather than limit the present invention:

[0040] like figure 1 , is the experimental system for measuring the friction loss of high-pressure fluid in the rotating and static gap of the present invention, including a high-speed motor 1, a torque detection device 3, a main device of the test bench 5, a data acquisition system 6, a gap and a sealed air supply system and a vacuum system;

[0041]The main device 5 of the test bench includes a rotor 17 and a casing 18. The rotor 17 is arranged inside the casing 18. Both ends of the rotor 17 are supported by bearings 21. A graphite ring sealing device 20 is provided between the middle of the rotor 17 and the bearings 21 at both ends. A sealing air supply port is provided in the middle of the graphite ring sealing device 20; a rotating and static gap 19 is formed between the middl

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Abstract

The invention discloses an experimental system for measuring friction loss of high-pressure fluid in a rotor-static gap and a working method of the experimental system, and belongs to the technical field of turbomachinery design and analysis. Compared with a conventional friction loss measurement method, the influence of bearing friction loss and graphite ring sealing device friction loss in the experiment table main body device on measurement of the friction loss of the fluid in the rotating and static gap is eliminated, and the measurement precision of fluid friction is greatly improved. Meanwhile, when the friction loss of the bearing and the friction loss of the graphite ring sealing device are measured, the fluid pressure in the rotor-static gap is fully reduced to reduce the influence of the fluid friction loss, and the measurement precision is improved. By improving the shaft end sealing technology, the friction loss of the high-pressure and high-density supercritical fluid in the rotor-static gap is measured. According to the method, high-precision measurement of the friction loss of the high-pressure fluid in the rotor-static gap is realized, and the method can be used for checking a numerical simulation method and a friction loss prediction model.

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Application Information

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Owner XI AN JIAOTONG UNIV
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