CN-122016008-A - Ultrasonic liquid level measuring device and ultrasonic liquid level measuring method

Abstract

The invention relates to an ultrasonic liquid level measuring device and a measuring method. The adjusting component comprises an adjusting block and an adjusting fixing piece, the adjusting block is provided with an installing hole for installing the ultrasonic probe, the installing height of the ultrasonic probe on the side wall of the container can be adjusted through the adjusting block, and the adjusting fixing piece is used for fixing the adjusting block on the side wall of the container. The detection end of the ultrasonic probe faces the side wall of the container and is in contact with the side wall of the container for transmitting and receiving ultrasonic signals to the interior of the container, and the data processor is connected with the ultrasonic probe for receiving echo signals and performing data analysis so as to judge the liquid level state in the interior of the container. According to the invention, the ultrasonic probe is arranged on the side wall of the container for detection, so that the measurement blind area generated by the larger thickness of the bottom of the container can be reduced, and the height adjustment of the detection is realized through the adjusting component, so that the accuracy and the applicability of liquid level detection are improved.

Inventors

• WANG KAI
• LOU XIABING

Assignees

• 苏州源展材料科技有限公司

Dates

Publication Date

20260512

Application Date

20260330

Claims (10)

1. 1. An ultrasonic liquid level measuring device is characterized by comprising: the ultrasonic probe is used for transmitting and receiving ultrasonic signals to the interior of the container so as to detect the liquid level; The adjusting assembly comprises an adjusting block and an adjusting fixing piece, wherein the adjusting block is provided with a mounting hole for mounting the ultrasonic probe, the adjusting block is used for adjusting the mounting height of the ultrasonic probe on the side wall of the container so as to change the liquid level detection position, and the adjusting fixing piece is used for fixing the adjusting block on the side wall of the container; the data processor is connected with the ultrasonic probe and used for receiving echo signals acquired by the ultrasonic probe and analyzing data; the detection end of the ultrasonic probe faces to the side wall of the container and is in contact with the side wall of the container.
2. 2. The ultrasonic liquid level measurement device of claim 1, wherein a plurality of mounting holes are formed in the adjusting block along the height direction of the adjusting block, and the distance between two adjacent mounting holes is a set value.
3. 3. The ultrasonic liquid level measurement device of claim 1, wherein the adjusting block and the container are provided with a clamp outside, and the adjusting block is tightly attached to the side wall of the container through the clamp.
4. 4. The ultrasonic liquid level measuring device according to claim 3, wherein the outer side of the adjusting block is provided with a receiving groove for receiving the clip.
5. 5. The ultrasonic liquid level measurement device according to claim 3, wherein the side surface of the adjusting block is provided with a through hole for leading out a cable of the ultrasonic probe.
6. 6. The ultrasonic liquid level measurement device of claim 1, wherein an elastic member is provided between the bottom of the mounting hole and the ultrasonic probe.
7. 7. The ultrasonic liquid level measurement device of claim 6, wherein the elastic member is a spring.
8. 8. The ultrasonic liquid level measuring device according to claim 1, wherein the ultrasonic probe generates ultrasonic waves of a frequency of 1MHz to 2 MHz.
9. 9. An ultrasonic level measurement method, characterized in that it is implemented based on an ultrasonic level measurement device according to any one of claims 1 to 8, comprising the steps of: S1, fixing an adjusting assembly on the side wall of a container, installing an ultrasonic probe in an installing hole on an adjusting block of the adjusting assembly, and adjusting the installing height of the ultrasonic probe on the side wall of the container through the adjusting block to enable the detecting end of the ultrasonic probe to be in contact with the side wall of the container; S2, starting the ultrasonic probe to transmit ultrasonic signals into the container and receive echo signals reflected back by a medium in the container; And S3, transmitting the echo signals to a data processor, and carrying out data analysis on the echo signals by the data processor so as to judge the liquid level state of the corresponding position of the ultrasonic probe, thereby obtaining the liquid residual information in the container.
10. 10. The ultrasonic liquid level measurement method according to claim 9, wherein the data processor determines whether the liquid exists at the corresponding position of the ultrasonic probe by analyzing a difference in reflection characteristics of the echo signal at the metal-liquid interface and the metal-gas interface.

Description

Ultrasonic liquid level measuring device and ultrasonic liquid level measuring method Technical Field The invention relates to the technical field of ultrasound, in particular to an ultrasonic liquid level measuring device and an ultrasonic liquid level measuring method. Background In industrial research and production activities, it is often necessary to use stainless steel containers or cylinders for storing and transferring flammable and explosive liquids. Since the stainless steel container is generally of an opaque structure, it is difficult to directly observe the remaining amount of liquid in the container during use, and therefore it is necessary to determine the remaining amount of liquid in the container by means of a liquid level detection means. In the prior art, common liquid level detection modes include a weighing method and an insertion type liquid level meter detection mode. For example, the remaining amount of liquid in the container is estimated indirectly by weighing the container. However, in the actual use process, the weighing method generally needs to detach the container for multiple times and perform weighing operation, so that not only is the operation steps increased and the production efficiency reduced, but also the risk of liquid exposure is easily increased in the detachment process, and a certain potential safety hazard exists. In addition, prior art liquid level detection is often performed using a plug-in level gauge, such as a rod-type level gauge or other invasive detection device mounted on the container. However, this type of approach typically requires a structural modification to the container or the provision of a mounting interface on the container, which may not only increase the risk of external impurities entering the interior of the container, but also increase the potential safety hazard of liquid leakage when flammable and explosive liquids are involved. In contrast, the ultrasonic liquid level detection mode has the characteristic of non-contact measurement, and can detect the liquid level inside the container by arranging the ultrasonic probe outside the container without modifying the container body, so that the ultrasonic liquid level detection method has a better application prospect. However, in the practical application process, the conventional ultrasonic liquid level detection method still has a certain limitation. For example, in the ultrasonic measurement process, echo hysteresis is easy to form a certain measurement blind area, and meanwhile, the bottom structure of most steel cylinders or stainless steel containers is thicker than the side wall, so that the transmission efficiency of ultrasonic waves in the container wall can be reduced, and on the other hand, the blind area range of ultrasonic measurement can be further enlarged due to the thicker bottom, so that the accuracy of liquid level measurement is affected. Disclosure of Invention Therefore, the invention aims to solve the technical problems that an ultrasonic liquid level detection device is usually arranged at the bottom of a container and is easily influenced by the thickness of the bottom of the container to form a measurement blind area in the prior art. In order to solve the above technical problem, in a first aspect, the present invention provides an ultrasonic liquid level measurement device, including: the ultrasonic probe is used for transmitting and receiving ultrasonic signals to the interior of the container so as to detect the liquid level; The adjusting assembly comprises an adjusting block and an adjusting fixing piece, wherein the adjusting block is provided with a mounting hole for mounting the ultrasonic probe, the adjusting block is used for adjusting the mounting height of the ultrasonic probe on the side wall of the container so as to change the liquid level detection position, and the adjusting fixing piece is used for fixing the adjusting block on the side wall of the container; the data processor is connected with the ultrasonic probe and used for receiving echo signals acquired by the ultrasonic probe and analyzing data; the detection end of the ultrasonic probe faces to the side wall of the container and is in contact with the side wall of the container. In one embodiment of the invention, a plurality of mounting holes are arranged in the adjusting block along the height direction of the adjusting block, and the distance between two adjacent mounting holes is a set value. In one embodiment of the invention, the adjusting block and the container are externally provided with a clamp, and the adjusting block is tightly attached to the side wall of the container through the clamp. In one embodiment of the invention, the outside of the adjusting block is provided with a receiving groove for receiving the clip. In one embodiment of the invention, the side of the adjusting block is provided with a through hole for leading out a cable of the ultrasonic probe. In one e