Liquid-level sensor for integrated armoured continuous measurement

A liquid level sensor and armored technology, applied in the field of sensors, can solve problems such as long technical response time, affecting production operations of enterprises, spare parts, and difficulty in replacing spare parts

Active Publication Date: 2016-01-20
CHONGQING MATERIALS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since this type of liquid level sensor is a special instrument, the import price is not only high, but also restricted by international factors. When maintaining and repairing this type of imported liqu

Method used

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  • Liquid-level sensor for integrated armoured continuous measurement
  • Liquid-level sensor for integrated armoured continuous measurement
  • Liquid-level sensor for integrated armoured continuous measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] see Figure 1 to Figure 3 The liquid level sensor with integrated armor and continuous measurement includes a tubular metal shell 4 with a sealed front end. In this embodiment, the tubular metal shell is made of stainless steel 316L and formed by armor drawing. The inner cavity of the tubular metal shell 4 is provided with a loop-forming platinum wire 1 and a loop-forming thermocouple wire 3, the platinum wire 1 and the thermocouple wire 3 both extend along the axial direction of the tubular metal shell 4, In this embodiment, the platinum wire 1 is arranged in parallel with two platinum wires and the front ends are connected by laser welding to form a U-shaped structure, and the rear ends of the two platinum wires are flush with the rear end of the tubular metal shell 4; the thermoelectric The dual wires 3 are arranged in parallel with the positive and negative pole wires and the front ends are connected by laser welding to form a U-shaped structure. In order to avoid ...

Embodiment 2

[0033] Under the condition that the ambient temperature is 30°C and the liquid temperature is 50°C, the liquid level sensor is vertically immersed in the liquid, and the insertion depth of the tubular metal shell of the sensor is 100mm. Obtained through real-time data collection, the liquid temperature t 0 =55.31℃, ambient temperature t f =29.18℃, the resistance value of pure platinum wire R=22.1Ω, substitute into the iterative function relation f ( l 1 ) = Δ R ( t 0 - t f ) m · e ml 1 - ...

Embodiment 3

[0035] Under the condition that the ambient temperature is 30°C and the liquid is boiling water (temperature is 100°C), the liquid level sensor is vertically immersed in boiling water, and the depth of insertion of the tubular metal shell of the sensor is 150mm. Obtained through real-time data collection, the liquid temperature t 0 =96.02℃, ambient temperature t f =28.69℃, the resistance value of pure platinum wire R=24.01Ω, substitute into the iterative function relation f ( l 1 ) = Δ R ( t 0 - t f ) m · e ml 1 ...

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Abstract

The invention relates to a liquid-level sensor for integrated armoured continuous measurement. The liquid-level sensor comprises a tubular metal housing with a sealed front end; and a platinum filament into a loop and a thermocouple filament into a loop are arranged in an inner cavity of the tubular metal housing and extend axially along the tubular metal housing. The inner cavity of the tubular metal housing is filled with insulating materials. The platinum filament and the thermocouple filament are separated by the filled insulating materials. A sealed connecting head is arranged at the rear end of the tubular metal housing for sealing. The platinum filament and the thermocouple filament are connected with a multi-core shielding cable by a sealing connecting head electrically; and a platinum resistor is arranged at the sealing connecting head and is connected with the multi-core shielding cable electrically. According to the invention, reliability of the measurement performance of the liquid-level sensor is high and the operation power is low; and real-time and continuous measurement is carried out on a liquid level position and a liquid temperature.

Description

technical field [0001] The invention relates to the field of sensors, in particular to an integrated armored liquid level sensor for continuous measurement. Background technique [0002] In modern industrial production, sensors used to measure liquid level are used in almost every link of the production process. According to its design principle, liquid level sensors are usually divided into contact type such as differential pressure type, float type, capacitive type, magnetic liquid level sensor, etc., non-contact type such as ultrasonic type, radar type liquid level sensor, etc., and some are Non-continuous level sensor for alarm or switch only. In some special working conditions, such as continuous measurement of liquid level in high temperature, high pressure, and strong radiation environments, the performance requirements of liquid level sensors are relatively high, and it is difficult for ordinary liquid level sensors to meet the requirements, especially those with mo...

Claims

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Application Information

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IPC IPC(8): G01F23/24
Inventor 冯邻江王华张祖力罗松鞠华赵彦张立新
Owner CHONGQING MATERIALS RES INST
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