A water level measuring device

Abstract

The utility model relates to full water experiment water level height measurement technical field discloses a water level height measuring device, including host piece, the host piece bottom is provided with the open mouth, floats piece, sets up in the host piece, and is provided with the reflection layer on the floats piece, and the floats piece is suitable for moving up and down along the height direction with the liquid level height change in the host piece, laser ranging piece sets up in the host piece and is located the upside of floats piece, and laser ranging piece is suitable for emitting laser to the reflection layer and receives the reflection signal to measure the liquid level height change value. The utility model provides a water level height measuring device, and the host piece bottom is communicated with the external water body through the open mouth, guarantees inside liquid level and outside consistent, and the floats piece moves stably with the liquid level and has the reflection layer, provides stable reflection signal for laser ranging piece, solves the difficult problem that the laser ranging piece is ineffective because of water surface reflection, and the measurement reference is missing.

Description

Technical Field

[0001] This utility model relates to the field of water level measurement technology in full-water experiments, and specifically to a water level measurement device. Background Technology

[0002] After the completion of water treatment structures such as water purification and sewage treatment plants, a full-water test must be carried out in accordance with the specifications to check for leakage. The leakage is calculated by a formula and fed back as a direct reflection of the drop in liquid level. The specification clearly requires that the allowable leakage drop in liquid level for large-area water tanks be 0.1 mm.

[0003] Currently, the industry generally uses mechanical reading liquid level probes with an accuracy of 0.1mm for measurement. However, this method requires the construction of a special working platform and relies on manual visual reading, which is not only cumbersome and inefficient, but also prone to human error affecting accuracy, making it difficult to consistently meet standards. Utility Model Content

[0004] In view of this, the present invention provides a water level height measuring device to solve the problems of low efficiency and unstable accuracy of traditional mechanical reading liquid level probe measurement in the full water test of existing water treatment structures.

[0005] This utility model provides a water level measurement device, comprising:

[0006] The main body has an opening at its bottom. When the main body is placed in the water area to be measured, the opening is adapted to communicate with the external water body to keep the liquid level inside the main body at the same height as the liquid level of the external water body.

[0007] A float is disposed in the main body and a reflective layer is provided on the float. The float is adapted to move up and down in the main body along the height direction as the liquid level changes.

[0008] A laser rangefinder is disposed within the main body and located above the float. The laser rangefinder is adapted to emit a laser beam toward the reflective layer and receive the reflected signal to measure the change in liquid level.

[0009] Optionally, the opening is provided with a connecting structure, which is a hole provided at the bottom of the main body.

[0010] Optionally, it also includes:

[0011] A waterproof component is disposed on the laser rangefinder, and the waterproof component is adapted to isolate the laser rangefinder from water.

[0012] Optionally, the waterproof component is a waterproof partition, which is disposed on the lower side of the laser rangefinder and connected to the inner wall of the main body to form a sealed structure.

[0013] Optionally, the waterproof partition is a glass waterproof partition.

[0014] Optionally, it also includes a stabilizer disposed on the main body, the stabilizer being adapted to suppress the sway amplitude of the main body in the measuring water area.

[0015] Optionally, the stabilizing component is a counterweight, which is disposed on the main body.

[0016] Optionally, the main body is a circular tube, and the inner wall of the circular tube is adapted to restrict the horizontal movement of the float.

[0017] Optionally, the top of the main body is provided with a hoisting structure, which is adapted to suspend the entire device above the water area to be measured.

[0018] Optionally, the measurement accuracy of the laser rangefinder is not less than 0.1 mm;

[0019] And / or, the range of the laser rangefinder is 65mm to 130mm.

[0020] Beneficial effects

[0021] The water level measuring device provided by this utility model includes: a main body with an opening at its bottom, wherein when the main body is placed in the water area to be measured, the opening is adapted to communicate with the external water body to maintain the same liquid level inside the main body as the external water body; a float disposed in the main body, and having a reflective layer disposed on it, the float being adapted to move up and down along the height direction within the main body as the liquid level changes; and a laser rangefinder disposed within the main body and located above the float, the laser rangefinder being adapted to emit a laser to the reflective layer and receive the reflected signal to measure the change in liquid level.

[0022] The water level measuring device provided by this utility model connects to the external water body through an open bottom of the main body, ensuring that the internal liquid level is consistent with the external level. The float moves stably with the liquid surface and has a reflective layer, providing a stable reflected signal for the laser rangefinder. This solves the problem of laser rangefinder failure due to water surface reflection and lack of measurement reference. In addition, compared with traditional mechanical probes, this device does not require a dedicated platform and eliminates manual visual readings, simplifying the process, improving efficiency, avoiding human error, and achieving a balance between measurement convenience and high accuracy and stability of results, meeting the urgent needs of the industry. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a water level measuring device according to an embodiment of the present invention;

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Main body; 11. Connecting structure; 2. Float component; 3. Laser rangefinder component; 4. Waterproof component; 5. Counterweight. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] The following is combined with Figure 1 The following describes embodiments of the present invention.

[0029] According to an embodiment of the present invention, a water level measuring device is provided, comprising:

[0030] Main body 1, with an opening at the bottom. When the main body 1 is placed in the water area to be measured, the opening is suitable for communicating with the external water body to keep the liquid level inside the main body 1 at the same height as the liquid level of the external water body.

[0031] The float 2 is disposed in the main body 1 and has a reflective layer. The float 2 is adapted to move up and down along the height direction within the main body 1 as the liquid level changes.

[0032] The laser rangefinder 3 is disposed inside the main body 1 and located on the upper side of the float 2. The laser rangefinder 3 is adapted to emit laser light into the reflective layer and receive the reflected signal to measure the change in liquid level.

[0033] It should be noted that the reflective layer is fixed to the top of the float 2 or to the side facing the laser rangefinder 3, and must have high reflectivity and stability. Addressing the problem of scattered and malfunctioning reflected signals when the conventional laser rangefinder 3 is directly aimed at the water surface, this layer can efficiently and directionally reflect the laser back to the rangefinder, forming a clear and continuous reflected signal, providing a reliable reference for measurement, and solving the problem of water surface reflection failure at its source.

[0034] The water level measurement device provided in this embodiment connects to the external water body through the bottom opening of the main body 1, ensuring that the internal liquid level is consistent with the external level. The float 2 moves stably with the liquid surface and has a reflective layer, providing a stable reflected signal for the laser rangefinder 3. This solves the problem of the laser rangefinder 3 failing due to water surface reflection and lacking a measurement reference. In addition, compared with traditional mechanical probes, this device does not require a dedicated platform and eliminates manual visual readings, simplifying the process, improving efficiency, avoiding human error, and achieving a balance between measurement convenience and high accuracy and stability of results, meeting the urgent needs of the industry.

[0035] Furthermore, a connecting structure 11 is provided at the opening, and the connecting structure 11 is a hole provided at the bottom of the main body 1.

[0036] In an easy-to-understand way, the perforated part at the opening serves as the connecting structure 11. The perforated part has a simple structure and is easy to process, which can quickly achieve the connection between the inside of the main body 1 and the external water body, ensuring that the internal and external liquid levels are kept level in real time, providing a stable foundation for the float 2 to reflect water level changes synchronously. Moreover, the perforation is not easy to be blocked and can maintain unobstructed flow for a long time.

[0037] In an alternative embodiment, the perforated component can be replaced with a slotted structure with a filter screen at the bottom, which can ensure water flow and filter impurities to prevent siltation inside the main body 1; or a flexible pipe joint connecting structure 11 can be used to connect the bottom of the main body 1 to the external water body through a flexible pipe, adapting to different pool bottom terrains and improving the overall placement flexibility of the device.

[0038] Furthermore, it also includes:

[0039] Waterproof component 4 is installed on laser rangefinder 3 and is suitable for isolating laser rangefinder 3 from water.

[0040] It is easy to understand that setting a waterproof component 4 on the laser rangefinder 3 can effectively isolate the laser rangefinder 3 from the water body, prevent water and water vapor in the main body 1 from contacting the precision components inside the rangefinder, prevent circuit short circuits, component damage and other failures caused by water ingress, and ensure the long-term stable operation of the rangefinder.

[0041] Furthermore, the waterproof component 4 is a waterproof partition, which is located on the lower side of the laser rangefinder 3 and is connected to the inner wall of the main body 1 to form a sealed structure.

[0042] It is easy to understand that the waterproof component 4 is set as a waterproof partition, and is placed on the lower side of the laser rangefinder 3 and connected to the inner wall of the main body 1 to form a sealed structure. The sealed structure can directly block the water and water vapor in the main body 1 from contacting the laser rangefinder 3 from below, and the isolation effect is more direct and reliable, preventing water from seeping in from the gap below the rangefinder. On the other hand, the structural design of the waterproof partition connected to the inner wall of the main body 1 is simple and stable, easy to process and install, and can quickly build a physical barrier between the rangefinder and the water. At the same time, it does not affect the laser rangefinder 3 from emitting and receiving laser signals to the float component 2 below, ensuring the normal operation of the measurement function while ensuring the waterproof effect.

[0043] In an alternative embodiment, a waterproof sealing cover can be used as the waterproof component 4. The waterproof sealing cover is completely fitted over the outside of the laser rangefinder 3. The edge of the cover is sealed to the inner wall of the main body 1, which can completely wrap the rangefinder and isolate moisture from multiple dimensions, making it especially suitable for test environments with high water vapor content.

[0044] Furthermore, the waterproof partition is a glass waterproof partition.

[0045] It is easy to understand that a glass waterproof partition is used. The glass material has excellent light transmittance, which can minimize the obstruction and attenuation of the laser signal, ensuring that the laser beam emitted by the laser rangefinder 3 can accurately penetrate the partition and act on the reflective layer of the float 2. At the same time, the reflected signal can be clearly transmitted back to the rangefinder, further ensuring the measurement accuracy.

[0046] In an alternative embodiment, a transparent acrylic sheet can be used as a waterproof partition. The transparent acrylic sheet also has excellent light transmittance, is lighter than glass, is easier to install, and has better impact resistance than glass, which can reduce the risk of breakage during transportation and installation. At the same time, it can achieve a reliable seal with the inner wall of the main body 1 through sealant.

[0047] Furthermore, it also includes a stabilizer, which is disposed on the main body 1 and is adapted to suppress the swaying amplitude of the main body 1 in the measuring water area.

[0048] It is easy to understand that by setting a stabilizing component on the main body 1, the swaying amplitude of the main body 1 in the measuring water area can be effectively suppressed, avoiding large swaying of the main body 1 due to water flow fluctuations, slight external collisions, etc., preventing the internal float 2 from having additional displacement or tilting due to swaying, and ensuring that the float 2 moves stably only with changes in liquid level.

[0049] Furthermore, the stabilizing component is a counterweight 5, which is mounted on the main body 1.

[0050] Specifically, in this embodiment, the counterweight 5 is hung on the lower side of the waterproof partition that is integrated with the main body 1. In practice, a pre-installed hanging structure, such as a threaded metal ring, is required on the lower surface of the waterproof partition. The ring can be machined simultaneously with the waterproof partition and fixed with bolts to ensure a stable overall structure with the waterproof partition and the inner wall of the main body 1, preventing damage to the waterproof seal due to loosening of the hanging structure. Furthermore, the counterweight 5 is located on the lower side of the waterproof partition and above the float 2, without directly contacting the float 2. This avoids interfering with the normal up-and-down movement of the float 2 as the liquid level changes, enhancing stability while ensuring the normal operation of the device's measurement function, thus balancing structural stability and measurement accuracy. Secondly, it is important to note that the counterweight 5's placement must avoid the path of the laser emitted by the laser rangefinder 3 to prevent interference.

[0051] Furthermore, the main body 1 is a circular tube main body, and the inner wall of the circular tube main body is adapted to restrict the horizontal movement of the float 2.

[0052] In simple terms, the inner wall of the circular tube main component has a closed annular structure, which can form a uniform constraint on the float 2 from all sides, effectively limiting the horizontal offset or rotation of the float 2 during its movement up and down with the liquid surface. This ensures that the float 2 is always directly below the laser rangefinder 3, so that the reflective layer is precisely aligned with the laser path, avoiding laser signal offset and reflection failure caused by the horizontal movement of the float 2, and ensuring measurement accuracy.

[0053] It should be noted that in this embodiment, the float 2 is fitted with the inner wall of the cylindrical body with a clearance, and the clearance should not be set too large to prevent the float from rotating inside the body 1, causing the reflective layer on the float 2 to overturn and affecting the detection function of the device.

[0054] In an alternative embodiment, a square column body can be used, with a rectangular inner wall. Vertical guide strips can be provided on two opposing sets of inner wall surfaces. Guide grooves adapted to the guide strips are opened on the corresponding side of the float 2. The horizontal movement of the float 2 is restricted by the cooperation between the guide strips and the guide grooves. At the same time, the square column structure is easier to fit with the pool wall or other fixed structures, making it suitable for installation in narrow waters.

[0055] Furthermore, the top of the main body 1 is provided with a hoisting structure, which is suitable for suspending the entire device above the water area to be measured.

[0056] Specifically, the entire device can be suspended above the water area to be measured using ropes, brackets, and other tools, eliminating the need for a support structure on the bottom of the pool. This is particularly suitable for scenarios with deep water or complex bottom environments (such as the presence of debris), reducing the difficulty of installation. The suspension method allows for flexible adjustment of the device's height and horizontal position, enabling quick and precise alignment of the main component 1 with the area to be measured. Furthermore, if the measurement point needs to be moved later, only the suspension position needs to be adjusted, improving operational convenience. In the suspended state, the main component 1 experiences more balanced force, reducing the impact of pool bottom protrusions or unevenness on its stability. It also avoids blockages caused by direct contact between the bottom of the main component 1 and the pool bottom, ensuring normal water flow and further maintaining measurement stability. Of course, in cases where the water area to be measured is shallow, the main component 1 can also be placed directly in the water.

[0057] Furthermore, the measurement accuracy of the laser rangefinder 3 is no less than 0.1 mm.

[0058] It is easy to understand that the measurement accuracy of the laser rangefinder 3 is no less than 0.1mm. This accuracy standard fully meets the strict requirement in the specification that "the measurement accuracy of the allowable liquid level drop in a large-area water tank must reach 0.1mm." It can accurately capture subtle changes in the liquid level and accurately calculate the liquid level drop corresponding to the leakage by using the distance difference fed back in real time by the laser signal. This avoids the omission of minor leaks or deviation of measurement results from reality due to insufficient accuracy, and provides reliable data support for judging whether the structure is qualified. On the other hand, compared with the traditional mechanical probe that relies on manual reading and is prone to errors, this high-precision characteristic can reduce measurement deviations from the source, ensure the consistency and stability of multiple measurement results, and eliminate the need for repeated verification and correction. This not only improves the efficiency of the test, but also enhances the reliability of the data. It effectively solves the problem of unstable accuracy that the industry has long faced, allowing the device to truly achieve the goal of high-precision measurement while meeting the requirements of convenience.

[0059] Furthermore, the range of the laser rangefinder 3 is 65mm to 130mm.

[0060] Intuitively, the laser rangefinder 3 is set with a range of 65mm to 130mm. This range accurately covers the common range of liquid level changes during full-water tests of water treatment structures. In full-water tests, even in large pools, the liquid level leakage drop within a single measurement cycle is typically around ten millimeters. The 65mm to 130mm range avoids the float 2 moving beyond its measurement range and failing to acquire complete data due to an excessively small range, while also eliminating the waste of precision caused by redundant ranges. This achieves efficient coordination between accuracy (not less than 0.1mm) and range. Furthermore, this range matches the movement of the float 2 within the main body 1, ensuring that the laser rangefinder 3 remains within the effective measurement range as the float 2 moves up and down with the liquid level. This eliminates the need for frequent adjustments to the rangefinder position, ensuring continuous and stable capture of distance change signals. Combined with its high precision, this further guarantees the continuity and accuracy of liquid level change measurements, providing strong support for the integrity of the test data.

[0061] Furthermore, the laser rangefinder 3 can transmit the measurement values ​​directly to the receiving platform via a wireless transmitter.

[0062] In simple terms, the laser rangefinder transmits measurement values ​​directly to the receiving platform via a wireless transmitter, quickly synchronizing the initial and subsequent distance values. The platform automatically calculates the difference and converts it into the liquid level drop, eliminating the need for manual recording and calculation, reducing the probability of data recording errors and calculation mistakes. It also facilitates centralized management of data from multiple devices, improving the efficiency and accuracy of experimental data processing. Furthermore, the specific setup of the wireless transmitter and receiving platform is existing technology and does not involve any improvements; therefore, it will not be elaborated upon here.

[0063] Here are two ways to use this device. First, the device is placed in water. Firstly, using the hoisting structure at the top of the main body 1, suspend the device above the water area to be tested. Adjust the length of the hoisting rope so that the bottom opening of the main body 1 is completely submerged in water, ensuring the liquid level inside the main body 1 is level with the external water body. Simultaneously, use the bottom counterweight 5 or a stabilizing component to suppress device swaying. Secondly, check the sealing status of the waterproof partition and the operation of the laser rangefinder. Turn on the laser rangefinder to emit a laser beam towards the reflective layer of the float 2 and record the initial distance value (corresponding to the initial liquid level elevation). During the test, the device remains in water, and the laser rangefinder monitors the distance change to the float 2 in real time. The liquid level elevation drop is calculated based on the distance difference, and data can be exported periodically to obtain information on the total leakage. Frequent device movement is unnecessary, ensuring continuous monitoring.

[0064] II. The method of testing in two stages is suitable for scenarios where real-time monitoring is not required, but only the changes in liquid level at different times need to be compared. The specific steps are as follows: For the first placement, install the device in the water area to be tested as described above. After the liquid level in the main body 1 stabilizes, turn on the laser rangefinder to record the initial distance value (corresponding to the initial liquid level elevation). After recording, turn off the device and move it to a dry place for storage. After setting a detection cycle (e.g., 24 hours), conduct the second placement. Reinstall the device in the same test location, ensuring that the installation height and horizontal position are consistent with the first time. After the liquid level stabilizes, record the current distance value (corresponding to the subsequent liquid level elevation). Finally, by using the difference between the two distance values, calculate the drop in liquid level elevation within this cycle, and then calculate the leakage amount. This method can reduce the long-term immersion wear of the device and is suitable for short-cycle, multi-point sampling detection scenarios.

[0065] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A water level measuring device, characterized in that, include: The main body (1) has an opening at the bottom. When the main body (1) is placed in the water area to be measured, the opening is adapted to communicate with the external water body to keep the liquid level inside the main body (1) at the same height as the liquid level of the external water body. A float (2) is disposed in the main body (1), and a reflective layer is provided on the float (2). The float (2) is adapted to move up and down in the main body (1) along the height direction as the liquid level changes. A laser rangefinder (3) is disposed inside the main body (1) and located on the upper side of the float (2). The laser rangefinder (3) is adapted to emit a laser to the reflective layer and receive the reflected signal to measure the change value of the liquid level height.

2. The water level measuring device according to claim 1, characterized in that, The opening is provided with a connecting structure (11), which is a hole provided at the bottom of the main body (1).

3. The water level measuring device according to claim 2, characterized in that, Also includes: A waterproof component (4) is disposed on the laser rangefinder (3), and the waterproof component (4) is adapted to isolate the laser rangefinder (3) from the water.

4. The water level measuring device according to claim 3, characterized in that, The waterproof component (4) is a waterproof partition, which is located on the lower side of the laser rangefinder (3) and is connected to the inner wall of the main body (1) to form a sealed structure.

5. The water level measuring device according to claim 4, characterized in that, The waterproof partition is a glass waterproof partition.

6. The water level measuring device according to any one of claims 1-5, characterized in that, It also includes a stabilizer disposed on the main body (1) and the stabilizer is adapted to suppress the sway amplitude of the main body (1) in the measuring water area.

7. The water level measuring device according to claim 6, characterized in that, The stabilizing component is a counterweight (5), which is disposed on the main body (1).

8. The water level measuring device according to any one of claims 1-5, characterized in that, The main body (1) is a circular tube, and the inner wall of the circular tube is adapted to restrict the horizontal movement of the float (2).

9. The water level measuring device according to any one of claims 1-5, characterized in that, The top of the main body (1) is provided with a hoisting structure, which is suitable for suspending the entire device above the water area to be measured.

10. The water level measuring device according to any one of claims 1-5, characterized in that, The measurement accuracy of the laser rangefinder (3) is not less than 0.1 mm; And / or, the range of the laser rangefinder (3) is 65 mm to 130 mm.

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