Liquid level fluctuation detector

Abstract

The utility model relates to a liquid level fluctuation detector, including a liquid level meter body, a cable, a pressure sensing test head and a mounting seat, wherein the liquid level meter body is connected to the pressure sensing test head through a cable, and the pressure sensing test head can be detachably mounted in the mounting seat, and the mounting seat includes a magnetic seat, a screen cylinder, a shielding cover and a locking bolt, wherein the screen cylinder is mounted on the magnetic seat, the shielding cover is screwed on the upper end of the screen cylinder, the pressure sensing test head is plugged into the shielding cover, and the locking bolt passes through the shielding cover for locking the pressure sensing test head. The mounting seat is used to fix the pressure sensing test head in a preset position, so as to achieve accurate testing of wave crests and wave heights, and avoid the pressure sensing test head from colliding with the inner wall of the water tank, causing damage, and the mounting seat is fixed to the bottom of the water tank by magnetic attraction, so as to facilitate displacement of the pressure sensing test head as needed, and make experimental testing more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wave makers, in particular to a liquid level fluctuation detector. Background Art

[0002] The wave machine is an important laboratory device, which is mainly used to simulate actual wave conditions to support research and design in the fields of ships, ports, coastal engineering, and marine engineering. The wave machine can create waves of different wavelengths and wave heights in the test pool to simulate the impact of actual waves on ships or buildings. The wave machine mainly consists of a water tank, a wave machine body, and a wave elimination device. The wave machine body pushes the liquid in the water tank to form various irregular wave shapes. In order to obtain the wave height of each part of the water tank in real time, we install a liquid level sensor in the water tank. At present, pressure level gauges are mostly used in experiments. It is based on the principle of static pressure measurement. The static pressure of a certain point of the liquid is proportional to the distance from the point to the liquid surface. The installation method is to put the sensor head of the level gauge directly into the water tank, but its sensor head is affected by the waves and is easy to shake, resulting in inaccurate liquid level measurement and collision between the sensor head and the water tank wall, which is easy to damage the sensor head, so it needs to be improved. Utility Model Content

[0003] Based on this, it is necessary to provide a liquid level fluctuation detector to address the above problems.

[0004] A liquid level fluctuation detector comprises a liquid level meter body, a cable, a pressure sensing test head and a mounting seat, wherein the liquid level meter body is connected to the pressure sensing test head via a cable, and the pressure sensing test head is detachably mounted in the mounting seat, and the mounting seat comprises a magnetic seat, a screen cylinder, a shielding cover and a locking bolt, the screen cylinder is mounted on the magnetic seat, the shielding cover is screwed on the upper end of the screen cylinder, the pressure sensing test head is plugged into the shielding cover, and the locking bolt passes through the shielding cover for locking the pressure sensing test head.

[0005] Preferably, the two locking bolts are symmetrically arranged and move towards each other to clamp the pressure sensing test head.

[0006] Preferably, the contact end of the locking bolt and the pressure sensing test head is concave.

[0007] Preferably, a rubber pad is provided at the contact end between the locking bolt and the pressure sensing test head.

[0008] Preferably, the shielding cover is made of aluminum alloy.

[0009] Preferably, the screen cylinder is screwed onto the upper end of the magnetic seat.

[0010] The utility model is beneficial in that a mounting base is used to fix the pressure sensing test head at a preset position, thereby achieving accurate testing of wave crests and wave heights, and avoiding collision between the pressure sensing test head and the inner wall of the water tank, which may cause damage. The mounting base is fixed to the bottom of the water tank by magnetic attraction, which makes it convenient to move the pressure sensing test head as needed, making experimental testing more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional schematic diagram of a liquid level fluctuation detector according to one embodiment;

[0012] Figure 2 This is a schematic diagram of the explosion of a liquid level fluctuation detector. DETAILED DESCRIPTION

[0013] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0014] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0016] like Figures 1-2As shown, a liquid level fluctuation detector includes a liquid level meter body 1, a cable 2, a pressure sensing test head 3 and a mounting base 4, wherein the liquid level meter body 1 is connected to the pressure sensing test head 3 via the cable 2, and the pressure sensing test head 3 is detachably mounted in the mounting base 4, and the mounting base 4 includes a magnetic seat 41, a screen cylinder 42, a shielding cover 43 and a locking bolt 44, the screen cylinder 42 is mounted on the magnetic seat 41, the shielding cover 43 is screwed on the upper end of the screen cylinder 42, the pressure sensing test head 3 is plugged into the shielding cover 43, and the locking bolt 44 passes through the shielding cover 43 for locking the pressure sensing test head 3. Specifically, in this embodiment, the liquid level meter body 1 is provided with a display screen for real-time display of the liquid level measured there, and transmits it to the background control room by wireless or wired means. The liquid level meter body 1 is installed on the outside of the water tank (not shown in the figure) to avoid water damage. The liquid level meter body 1 is electrically connected to the pressure sensing test head 3 through the cable 2. In order to prevent the pressure sensing test head 3 from drifting with the waves during the wave making process, we use a mounting seat 4 to fix the pressure sensing test head 3 in a preset position, so as to achieve accurate testing of the wave height of the wave crest, and avoid the problem of damage caused by the collision between the pressure sensing test head 3 and the inner wall of the water tank. In order to achieve efficient installation and disassembly of the pressure sensing test head 3, and to facilitate the adjustment of the position according to the wave making experiment, the mounting seat 4 designed by us is fixed to the bottom of the water tank by magnetic suction, which includes a magnetic suction seat 41, a screen cylinder 42, a shielding cover 43 and a locking bolt 44. The magnetic suction seat 41 is magnetically connected to the bottom of the water tank, which is convenient for displacement according to needs, and there is no need to drill holes in the bottom of the water tank for installation, which is more convenient when displacing the pressure sensing test head 3. In order to ensure that the pressure sensing test head 3 is in normal contact with the liquid at the location, we set a screen cylinder 42 on the magnetic seat 41. Specifically, the screen cylinder 42 is screwed on the upper end of the magnetic seat 41. And its side wall has holes to facilitate the normal passage of fluid, so that the pressure sensing test head 3 can normally measure the hydraulic pressure at the location, and not follow the crowd. We fix the pressure sensing test head 3 in the shielding cover 43. The shielding cover 43 is used to reduce the interference of the magnetic seat 41 on the pressure sensing test head 3. Specifically, the shielding cover 43 is made of aluminum alloy. A locking bolt 44 is installed at the port of the shielding cover 43. By screwing the locking bolt 44, the pressure sensing test head 3 can be clamped to complete the fixation of the pressure sensing test head 3, avoiding the drift of the pressure sensing test head 3 in the wave-making diagram, resulting in reduced measurement accuracy.

[0017] like Figures 1-2 As shown, the two locking bolts 44 are symmetrically arranged and move towards each other to clamp the pressure sensing test head 3, thereby ensuring the clamping force so that the pressure sensing test head 3 is always in a vertical state and will not deflect due to the action of waves.

[0018] like Figure 2As shown, the contact end of the locking bolt 44 and the pressure sensing test head 3 is concave. It is used to match the cylindrical pressure sensing test head 3. The ends of the two locking bolts 44 directly cover the pressure sensing test head 3, which has a wider contact area, lower pressure on it, and protects it from deformation at the pressure point.

[0019] Specifically, a rubber pad is provided at the contact end between the locking bolt 44 and the pressure sensing test head 3 , which provides flexible contact, reduces the pressure applied to the pressure sensing test head 3 , and increases friction.

[0020] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A liquid level fluctuation detector, characterized in that: It includes a liquid level meter body, a cable, a pressure sensing test head and a mounting seat. The liquid level meter body is connected to the pressure sensing test head through a cable. The pressure sensing test head can be detachably installed in the mounting seat. The mounting seat includes a magnetic seat, a screen cylinder, a shielding cover and a locking bolt. The screen cylinder is installed on the magnetic seat. The shielding cover is screwed on the upper end of the screen cylinder. The pressure sensing test head is plugged into the shielding cover. The locking bolt passes through the shielding cover and is used to lock the pressure sensing test head.

2. A liquid level fluctuation detector as claimed in claim 1, characterized in that: The two locking bolts are symmetrically arranged and move towards each other to clamp the pressure sensing test head.

3. A liquid level fluctuation detector as claimed in claim 2, characterized in that: The contact end of the locking bolt and the pressure sensing test head is concave.

4. A liquid level fluctuation detector as claimed in claim 3, characterized in that: A rubber pad is arranged at the contact end between the locking bolt and the pressure sensing test head.

5. A liquid level fluctuation detector as claimed in claim 1, characterized in that: The shielding cover is made of aluminum alloy.

6. A liquid level fluctuation detector as claimed in claim 1, characterized in that: The screen cylinder is screwed on the upper end of the magnetic suction seat.

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