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Non-contact type single-point liquid metal liquid level measurement device

A liquid level measurement device, liquid metal technology, applied in the direction of measuring device, test/calibration device, liquid/fluid solid measurement, etc., can solve the problem of limiting the use range and measurement accuracy of liquid level measurement device, high temperature liquid metal pressure difference measurement accuracy It is difficult to guarantee and affect the accuracy and reliability of the liquid level signal, and achieve the effect of improving the accuracy of liquid level measurement and the scope of use, increasing the scope of use, and reducing limitations

Inactive Publication Date: 2014-08-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: liquid metal vapor may condense on the insulator, destroy the insulating layer, and cause false connection; metal oxides are deposited on the electrical contacts, reducing the electrical conduction performance
Its disadvantages are: the pressure induction tube needs to be installed on the surface of the liquid metal container, which may affect the integrity of the container; the pressure difference measurement accuracy of high-temperature liquid metal is difficult to guarantee, thus affecting the accuracy of liquid level measurement
Its disadvantages are: the dielectric properties of liquid metal will affect the electromagnetic signal, thereby affecting the accuracy and reliability of the liquid level signal; the insulation layer of the inductance coil is easy to age in a high temperature environment, and is not suitable for long-term work
[0006] In summary, the limitations of the above measurement principles limit the range of use and measurement accuracy of liquid level measurement devices

Method used

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  • Non-contact type single-point liquid metal liquid level measurement device
  • Non-contact type single-point liquid metal liquid level measurement device
  • Non-contact type single-point liquid metal liquid level measurement device

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Embodiment Construction

[0028] like figure 1As shown, the non-contact single-point liquid metal liquid level device implemented in the present invention includes: a first DC stepping motor 1, a second DC stepping motor 5, a first seal 2 and a second seal 7, and a circuit box 3. Meshing gear 4, sealing shell 6, upper flange 8, lower flange 9, induction probe 10, lifting sleeve 11 and two liquid level probes 12. The lower flange 9 is fixed on the upper edge of the measured container 14, the liquid level probe 12 is fixed on the outer end of the lifting sleeve 11 by screw connection, and the induction probe 10 is fixed on the inner end of the lifting sleeve 11 by interference fit. The bushing 11 is fixed on the upper flange 8 and the lower flange 9 by bearings, the upper flange 8 and the lower flange 9 are connected by screws, and the upper flange 8 and the lower flange 9 are sealed by the second sealing member 7. The end of the casing 11 is connected to a pair of meshing gears 4 (including a driving g...

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Abstract

The invention discloses a non-contact type single-point liquid metal liquid level measurement device, which consists of a sensing probe, a lifting casing pipe, a liquid level probe, a direct-current stepping motor, an upper flange plate, a lower flange plate, a sealing shell, a meshing gear, a sealing element, a signal processing system, a motor driving system and a wireless transmission system, wherein the sensing probe detects the free liquid level of detected liquid metal; and the stepping motor is controlled by a corresponding control algorithm to drive the lifting casing pipe to lift, thereby keeping the sensing probe always in non-contact with the liquid level of detected liquid metal to realize non-contact measurement; the maximum detection distance between the sensing probe and the liquid level of detected liquid metal can be automatically calibrated by the liquid level probe, and the liquid level can be prevented from contacting with the sensing probe; and the sealing element can ensure the tightness of a measured container and is suitable for measuring the metal liquid level of the pressure container. The liquid level device can measure the liquid level of the liquid metal of which the temperature is up to 600DEG C, can be used for a long time, and has the advantages of high reliability and good sensitivity and accuracy, and is suitable for the accurate non-contact measurement of the high-temperature liquid metal liquid level.

Description

technical field [0001] The invention belongs to the technical field of metal liquid level measurement, and in particular relates to a non-contact single-point liquid metal liquid level measurement device. Background technique [0002] Liquid metal is a metal with high conductivity. At present, its liquid level measurement methods mainly include probe type liquid level measurement method, differential pressure liquid level measurement method and inductive liquid level measurement method. [0003] Probe type liquid level measurement is a contact liquid level gauge. Its working principle is to add electrodes to the probe and the surface of the container respectively. When the metal liquid level touches the probe electrode, a closed circuit is formed to output a corresponding electrical signal. Its disadvantages are: liquid metal vapor may condense on the insulator, destroy the insulating layer, and cause false connection; metal oxides are deposited on the electrical contacts, r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/00G01F25/00
Inventor 姚传明朱志强高胜王勃黄群英
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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