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Device and a method for measuring evaporation capacity of magnetic liquid under the coupling action of magnetic field and temperature field

A magnetic liquid and measuring device technology, which is applied in the direction of weighing by removing certain components, can solve the problems of liquid sealing ring failure and sealing failure, and achieve the effect of simple operation and simple structure

Inactive Publication Date: 2021-07-13
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, there has been no specific method or means for the characterization of the life of the magnetic liquid seal, and the failure of the magnetic liquid seal is due to the evaporation and consumption of the magnetic liquid, which leads to the failure of the liquid sealing ring, which leads to the failure of the seal. Measuring the evaporation rate of the magnetic liquid seal can be indirect life expectancy

Method used

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  • Device and a method for measuring evaporation capacity of magnetic liquid under the coupling action of magnetic field and temperature field
  • Device and a method for measuring evaporation capacity of magnetic liquid under the coupling action of magnetic field and temperature field
  • Device and a method for measuring evaporation capacity of magnetic liquid under the coupling action of magnetic field and temperature field

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Embodiment Construction

[0019] Such as figure 1 Shown in the present invention is a magnetic liquid evaporation measurement device under the coupling effect of a magnetic field temperature field, comprising: a magnetic field adjustment device, a high and low temperature test chamber 10, a balance 11, and a Tesla meter 12, and the magnetic field adjustment device includes: a base 1, a dovetail Guide rail 2, dovetail slider 3, knob 4, magnet seat 5, permanent magnet 6, test tube 7, test tube rack 8, scale 9.

[0020] image 3 Shown is a 3D view of the magnetic field tuning device. The dovetail rail 2 is fixedly connected to the base 1, the dovetail slider 3 is located at the dovetail rail 2, the knob 4 is located at the dovetail slider 3, and is used to adjust the position of the dovetail slider 3 on the dovetail rail 2, and the magnet seat 5 It is connected to the dovetail slider 3 by bolts, and the permanent magnet 6 is glued to the magnet base 5, so that the two permanent magnets 6 are placed oppo...

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Abstract

The invention discloses a device and a method for measuring evaporation capacity of magnetic liquid under the coupling action of a magnetic field and a temperature field. The device comprises a magnetic field adjusting device, a high-low temperature test box, a balance and a teslameter which are mutually independent. The magnetic field adjusting device is composed of a base, a dovetail guide rail, a dovetail groove sliding block, a rotary knob, a magnet base, a permanent magnet, a test tube, a test tube rack and a graduated scale, the magnetic liquid is located in the test tube, and controllable magnetic field conditions are provided for evaporation of the magnetic liquid. The magnetic field adjusting device is placed in a high-low temperature test box to form a magnetic field and temperature field coupling condition. The teslameter measures the magnetic field at the test tube, and the balance is used for measuring the evaporation capacity. According to the invention, the evaporation state of the magnetic liquid in the magnetic liquid seal is simulated, the evaporation capacity of the magnetic liquid under the magnetic field and temperature field coupling condition can be obtained, then the service life of the magnetic liquid seal is predicted, and the method is provided for estimating the service life of the magnetic liquid seal.

Description

technical field [0001] The invention relates to the field of measuring the evaporation of magnetic liquid, in particular to a device and method for measuring the evaporation of magnetic liquid under the coupling action of a magnetic field and a temperature field. Background technique [0002] Magnetic fluid is a new type of nano-scale functional material, which consists of three parts, including magnetic particles, surfactants and base carrier liquid. Magnetic liquid seal is one of the most widely used applications of magnetic liquid. Magnetic liquid seal has the advantages of zero leakage, long life, simple structure and high reliability. Among them, there has been no specific method or means for the characterization of the life of the magnetic liquid seal, and the failure of the magnetic liquid seal is due to the evaporation and consumption of the magnetic liquid, which leads to the failure of the liquid sealing ring, which leads to the failure of the seal. Measuring the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 于文娟李德才杨洋
Owner BEIJING JIAOTONG UNIV
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