Explosion-proof capacitive type liquid level meter

Abstract

The invention discloses an explosion-proof capacitance type liquid level meter. The liquid level meter comprises a capacitive liquid level meter body. The lower end of the capacitive liquid level meter body is fixedly connected with a hollow connecting section through a first limiting assembly. A first electrode tube is vertically arranged on the lower side of the hollow connecting section; a second electrode tube is sleeved outside the first electrode tube; the first electrode tube and the second electrode tube are connected with the hollow connecting section through a second limiting assembly; the hollow connecting section is fixedly sleeved with a first flange plate; the second electrode tube is sleeved with a protective sleeve, a plurality of through liquid inlet holes are evenly distributed in the lower end face of the protective sleeve, the upper end of the protective sleeve is fixedly sleeved with a second flange plate, the second flange plate is matched with the first flange plate, the first flange plate is provided with an installation assembly used for fixing, and the side wall of the protective sleeve is provided with a ventilation assembly communicated with the second electrode tube. The capacitance type liquid level meter disclosed by the invention has a relatively high explosion-proof effect, is relatively convenient to mount and dismount, is convenient to use andis convenient to maintain and replace.

Description

technical field [0001] The invention belongs to the technical field of capacitive liquid level gauges; in particular, it relates to an explosion-proof capacitive liquid level gauge. Background technique [0002] The capacitive liquid level gauge is a device that converts the change of the position of the measured object into capacitance. The capacitive liquid level gauge has the advantages of simple structure, high resolution, reliable operation, and fast dynamic response. It can be measured without contact and can Working in more harsh environments, the existing capacitive liquid level gauges measure through two electrodes that are in contact with the measured object. The existing capacitive liquid level gauges all use analog circuits, and errors are prone to occur due to environmental factors such as the presence of impurities in the measured object, and what is more, because of the influence of the impurities in the measured object and the nature of the measured object, i...

AI Technical Summary

Problems solved by technology

The existing capacitive liquid level gauges all use analog circuits, and errors are prone to occur due to environmental factors such as the presence of impurities in the measured object, and what is more, because of the influence of the impurities in the measured object and the nature of the measured object, it is easy to damage

[0003] The current capacitive liquid level gauge is basically that the electrode is in direct contact with the measured object, and the safety methods include flange, thread and clamping. First, the internal stress and debris of the measured object will have a greater impact on the electrode. It is prone to damage, and the ordinary installation method is not effective enough to deal with the impact force; at the same time, the structure of the current capacitive liquid level gauge is fixed, and it is inconvenient to replace and repair a single part when it is damaged, which may easily lead to the failure of the whole , causing waste

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