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Differential pressure controller for liquid level detection and measuring method

A differential pressure controller and liquid level detection technology, which is applied in the direction of liquid level indicators for physical variable measurement, can solve the problems of sensor safety hazards and other problems, and achieve the goal of eliminating safety hazards, improving accuracy and safety, and improving detection speed Effect

Pending Publication Date: 2018-12-18
LUOYANG XINPU PETROCHEM EQUIP
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the potential safety hazard caused by the sensor directly contacting the oil when measuring the oil level in the prior art, the present invention provides a new differential pressure controller for liquid level detection

Method used

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  • Differential pressure controller for liquid level detection and measuring method
  • Differential pressure controller for liquid level detection and measuring method
  • Differential pressure controller for liquid level detection and measuring method

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0035] like Figure 1~3 As shown, the described differential pressure controller for liquid level detection includes a passive detection head 1 for detecting the liquid level height, and a gas-electric converter 2 for receiving the output signal of the passive detection head 1; It is characterized in that: the passive detection head 1 includes two liquid inlets separated from each other, one high and one low from the liquid surface; among them, the two liquid inlets, one high and one low, are respectively connected with two air pressure sensors for detecting The change data of the air pressure of two liquid inlets, one high and one low; the gas-electric converter 2 includes two air pressure sensors and a control unit for receiving the difference between the two air pressure se...

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Abstract

In order to solve the safety hazard caused by the sensor directly contacting the oil when measuring the oil level in the prior art, the invention provides a differential pressure controller for liquidlevel detection. The differential pressure controller comprises a passive detector head used for the detection of a liquid level height, and an air-electric converter used for receiving a signal output by the passive detector head, wherein the passive detector head comprises two liquid inlets separated from each other by high and low liquid levels; the air-electric converter comprises two air pressure sensors and a control unit for receiving the difference between the two air pressure sensors; and the two high and low liquid inlets are respectively connected to the two air pressure sensors for detecting the change data of air pressure of the two high and low liquid inlets. The differential pressure controller reflects the change of the liquid level according to the change of the air pressure, so that the sensor can measure the liquid level without contacting the surface, and the electrical component that generates the spark is separated from the oil, thereby improving the safety.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a differential pressure controller and a measurement method for liquid level detection that do not directly contact with oil products. Background technique [0002] At present, in the field of liquid level detection in the modern petrochemical industry, voltage technology is generally used to connect electronic components and cables, and the formed circuit is in direct contact with the oil; in the actual use process, the cable is often damaged, resulting in poor sealing Strictly, the occurrence of sparks seriously threatens the safe production of petrochemical enterprises. Contents of the invention [0003] In order to solve the potential safety hazard caused by the sensor directly contacting the oil when measuring the oil level in the prior art, the present invention provides a new differential pressure controller for liquid level detection. The invention adopts the chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/26
CPCG01F23/26
Inventor 郭迎丽张长轩张其庭席鲜静郭建强周东南刘国良张保栓李欢欢
Owner LUOYANG XINPU PETROCHEM EQUIP
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