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Steering gear reflecting surface determining method and external measuring liquidometer focusing steering gear

A technology for determining methods and reflecting surfaces, applied to instruments, measuring devices, liquid level indicators, etc., can solve problems such as measurement failures

Active Publication Date: 2021-04-30
XIAN DINGHUA ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the measuring head cannot receive the echo at all, which makes the measurement fail

Method used

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  • Steering gear reflecting surface determining method and external measuring liquidometer focusing steering gear
  • Steering gear reflecting surface determining method and external measuring liquidometer focusing steering gear
  • Steering gear reflecting surface determining method and external measuring liquidometer focusing steering gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, a method for determining the reflecting surface of a diverter provided by the present invention includes:

[0050]Step 101: Obtain the focal length and set the reflection angle; the focal length is the distance between the ray emitting source and the center of the reflective surface of the diverter; the set reflection angle is the outgoing angle of the ultrasonic waves reflected by the reflective surface of the diverter.

[0051] Step 102: Determine the 0th order reflective surface of the reflective surface of the diverter according to the focal length and the set reflective angle.

[0052] Step 103: Using a geometric method to determine adjacent reflective surfaces according to the 0th reflective surface; the adjacent reflective surfaces include positive order reflective surfaces and negative order reflective surfaces.

[0053] Step 104: When the number of stages of the reflective surface of the diverter reaches a set number of stages, deter...

Embodiment 2

[0078] The present invention provides a focusing diverter of an external liquid level gauge, comprising: a diverter reflective surface determined according to the method for determining the reflective surface of the diverter as in Embodiment 1.

[0079] The 0th-order reflective surface of the diverter reflector is at a set angle to the horizontal plane so that the direction of the ultrasonic wave reflected by the diverter reflector is the set direction; the midpoint of the 0-stage reflector of the diverter reflector is on the same horizontal plane as the radiation source ; The ray emitting source is arranged on the concave side of the reflective surface of the diverter; the transverse section of the reflective surface of the diverter is an arc surface.

[0080] As an optional implementation, the first side and the second side of the reflective surface of the diverter are respectively in contact with the inner surface of the side wall of the liquid tank; the first side is an arc...

Embodiment 3

[0084] The embodiment provides a specific way of focusing the diverter of the external liquid level gauge, and the reflective surface of the diverter is the focusing reflective surface. The ultrasonic direction error angle θ emitted by the measuring head is eliminated to 0 degrees after being reflected by the diverter. According to the characteristics of the reflective surface of the diverter, the ultrasonic waves emitted from the measuring head and scattered in all directions are reflected by the reflective surface of the diverter, and then shoot straight to the liquid surface, and then reflect back to the reflective surface of the diverter through the liquid surface, and then pass through the diverter. The reflective surface is reflected again and focused to the measuring head, which greatly enhances the echo signal. Therefore, it is called the focus diverter. The purpose of using the external liquid level gauge to focus on the steering gear and conveniently measure the liq...

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PUM

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Abstract

The invention discloses a method for determining a reflecting surface of a steering gear and a focusing steering gear of an external measurement liquid level meter and relates to the technical field of liquid level measurement. The method comprises steps that the focal length is obtained, and the reflection angle is set; the focal length is the distance between the ray emitting source and the center of the steering gear reflecting surface; the set reflection angle is an emergence angle of the ultrasonic wave reflected by the steering gear reflection surface; a zero-level reflecting surface of the steering gear reflecting surface is determined according to the focal length and the set reflecting angle; an adjacent-stage reflecting surface is determined by adopting a geometric method according to the 0th-stage reflecting surface; the adjacent stages of reflecting surfaces comprise a positive-number-stage reflecting surface and a negative-number-stage reflecting surface; and when the stage number of the reflecting surface of the steering gear reaches a set stage number, the reflecting surface of the steering gear is determined according to the 0th-stage reflecting surface and the adjacent-stage reflecting surface. The method is advantaged in that the liquid level can be measured on the outer side of the side wall of the vertical liquid storage tank.

Description

technical field [0001] The invention relates to the technical field of liquid level measurement, in particular to a method for determining a reflective surface of a diverter and a focusing diverter of an external liquid level gauge. Background technique [0002] It is very common in China's petrochemical and chemical enterprises to use external liquid level gauges to measure the liquid level from outside the liquid storage tank. However, for the vertical tanks that account for the vast majority of liquid storage tanks, since the tank body is installed on the cement foundation, there is no space under the bottom of the tank to install the measuring head. The measuring head can only be installed outside the side wall of the liquid tank, and a steering gear is installed in the tank to deflect the ultrasonic waves emitted by the measuring head at 45 degrees to the liquid surface, and then redirect the reflected echo of the liquid surface through the steering gear again. 45 degr...

Claims

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Application Information

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IPC IPC(8): G01F23/296G01S7/521
CPCG01F23/296G01S7/521G01S15/88G01F23/2962
Inventor 王定华王瑞王璞
Owner XIAN DINGHUA ELECTRONICS CO LTD