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Spherical electrode and spherical capacitive hysteresis type liquid level switch containing the spherical electrode

A spherical electrode and liquid level switch technology, which is applied in liquid level indicators for physical variable measurement, liquid level indicators, liquid/fluid solid measurement, etc., can solve the problem of low precision of liquid level switches and high water absorption of foamed floats , Epoxy resin insulation, poor voltage resistance and other problems, to achieve the effect of compact structure, small space required for installation, and unaffected sensitivity

Active Publication Date: 2019-06-11
哈尔滨西陆科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of low precision of existing liquid level switches, high water absorption rate of foamed floating balls, and poor insulation and pressure resistance of epoxy resin. Now it provides a spherical electrode and a spherical capacitive hysteresis type liquid level switch containing the spherical electrode. switch

Method used

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  • Spherical electrode and spherical capacitive hysteresis type liquid level switch containing the spherical electrode
  • Spherical electrode and spherical capacitive hysteresis type liquid level switch containing the spherical electrode
  • Spherical electrode and spherical capacitive hysteresis type liquid level switch containing the spherical electrode

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specific Embodiment approach 1

[0032] Specific implementation mode one: refer to Figure 1 to Figure 4 Describe this embodiment in detail, the spherical electrode described in this embodiment includes: a metal spherical electrode 1-1, an insulating layer 1-2 and a terminal post 1-3;

[0033] One end of the terminal 1-3 is in contact with the outer surface of the metal spherical electrode 1-1, and the outer surface of the metal spherical electrode 1-1 and the terminal 1-3 is wrapped with an insulating layer 1-2, and the insulating layer 1-2 wraps the metal The spherical electrode 1-1 is sealed with the terminal 1-3, and the other end of the terminal 1-3 is located outside the insulating layer 1-2, serving as the terminal of the spherical electrode.

[0034] In this embodiment, in practical application, the spherical electrode is located in the working liquid tank, and functions as a capacitive electrode for measuring the position of the liquid level. Inside the spherical electrode, the outer surface of the ...

specific Embodiment approach 2

[0035] Embodiment 2: This embodiment is a further description of the spherical electrode described in Embodiment 1. In this embodiment, the terminals 1-3 are metal terminals.

specific Embodiment approach 3

[0036] Specific embodiment 3: This embodiment is a further description of the spherical electrode described in specific embodiment 1. In this embodiment, the insulating layer 1-2 is divided into an electrode part and a terminal part, and the electrode part is wrapped in a metal spherical electrode 1 On the outside of -1, the terminal part is wrapped on the outside of terminal 1-3, the thickness of the electrode part is smaller than the thickness of the terminal part, and the thickness of the electrode part is uniform.

[0037] In this embodiment, the thickness of the outer insulating layer wrapping the metal sphere part is relatively thin, and the thickness distribution is required to be uniform; the outer insulating layer wrapping the terminal part can be thicker; the entire outer insulating layer part is required to be sealed reliably, and the measured liquid is not allowed infiltrate.

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Abstract

The invention discloses a radius tip electrode and a spherical capacitance return difference type liquid level switch with the radius tip electrode, and relates to the technical field of conductive liquid level detection. The problems that an existing liquid level switch is low in precision, high in foam floating ball water absorption rate and poor in epoxy resin insulating and pressure resistant property are solved. According to the radius tip electrode, one end of a binding post makes contact with and is connected with the outer surface of a metal spherical electrode, an insulating layer wraps the outer surfaces of the metal spherical electrode and the binding post, the insulating layer seals the metal spherical electrode and the binding post, and the other end of the binding post is located outside the insulating layer to serve as the wiring end of the radius tip electrode. According to the spherical capacitance return difference type liquid level switch, the wiring end of the radius tip electrode is connected with the measurement signal input end of a measuring circuit, and the wiring end of a liquid electrode is connected with the measurement signal input end of the measuring circuit. The radius tip electrode and the spherical capacitance return difference type liquid level switch are suitable for conductive liquid level detection.

Description

technical field [0001] The invention belongs to the technical field of conductive liquid level detection, in particular to a spherical capacitive hysteresis type liquid level switch. Background technique [0002] Liquid level switch, also known as water level switch, liquid level sensor, as the name suggests, is a switch used to control the liquid level. It is mainly divided into contact type and non-contact type in form. Commonly used non-contact switches include capacitive liquid level switches, while contact float type liquid level switches are the most widely used. [0003] The capacitive liquid level switch is used to detect the change of the small capacitance (usually PF) difference caused by the change of the liquid level, and the special ADA capacitance detection chip performs signal processing to detect the water level and output the signal to the output end. [0004] The biggest feature of the float type liquid level switch is that there is a float with a rod. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/26
CPCG01F23/265G01F23/266
Inventor 李居东许兴印任雪童李伟奇马磊杨洪广
Owner 哈尔滨西陆科技有限公司
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