Liquid level pipeline pressure detection device

Abstract

The invention discloses a liquid level type pipeline pressure detection device. The detection device is connected with a detected pipeline, and includes a communication pipeline containing liquid, and a detection component for detecting the liquid; the communication pipeline is provided with two upper opening ends which are respectively communicated with the detected pipeline and the atmosphere; an air pressure change in the detected pipeline constitutes a change of a liquid height; and the detection component, according to the change of the liquid height, inputs an electric signal. According to the invention, a communication pipeline height difference caused by the air pressure change is used as a detection object; through a photoelectric detection switch, the liquid level height change in the communication pipeline is detected and transformed into an electrical signal output; and a reliable test of the detected pipeline air pressure such as a scaling powder is achieved. A fluid adding solenoid valve and a fluid adding box which are provided are used to supplement volatile liquid. The liquid level type pipeline pressure detection device can detect the scaling powder pipeline, and can also detect other detected pipelines, such as ventilation ducts of all kinds of special working environments.

Description

technical field [0001] The invention relates to an air pressure detection device, more specifically a liquid level pipeline pressure detection device. Background technique [0002] Aiming at the existing air duct for flux, a mechanical alarm device is currently used. Its principle is to require the wind with flux to pass through it, so as to detect the change of wind speed to determine whether the air duct for extracting flux is blocked. . Because the wind with flux in this device needs to pass through the mechanical device, the parts of the mechanical device that are in contact with the wind are easily adhered by the sticky flux and affect its action, eventually leading to failure. currently used as Figure 6 The structural alarm device shown works normally before it is adhered by flux, but false alarms will appear as the usage time increases. [0003] Other products on the market are also mechanical or direct contact (such as: Huba Control's differential pressure switch)...

AI Technical Summary

Problems solved by technology

Because the wind with flux of this device needs to pass through this mechanical device, the parts of the mechanical device that are in contact with the wind are easily adhered by the sticky flux and affect its action, eventually leading to failure

currently used as Image 6 The structural alarm device shown works normally before it is adhered by flux, but false alarms will appear as the use time increases

[0003] Other existing products on the market are also mechanical or direct contact (such as: Huba Control’s differential pressure switch), and these products have the defect that they are easily stuck by flux

Images