Laser water level gauge

Abstract

The utility model discloses a laser water level gauge, and belongs to the technical field of water level gauges. A laser water level gauge comprises a pipeline and a laser displacement sensor which are vertically arranged up and down, a plurality of through grooves are formed in the outer wall of the pipeline, the through grooves and the pipeline are coaxially arranged in a diverging mode, and reflection floating bodies used for reflecting laser emitted by the laser displacement sensor are arranged among the through grooves in a sliding mode. Compared with the prior art, the pressure type liquid level meter has the advantages that the influence of underwater sludge and water flow waves is avoided, a pressure tapping hole of the pressure type liquid level meter does not need to be cleaned, the water level does not need to be repeatedly checked manually, the measurement precision is high, the service life is long, the operation is simple, and the cost is low. Through cooperative arrangement of the cleaning mechanism, floating impurities and foam on the water surface can be isolated, the reflection floating body can be supported to reduce contact with the water surface, and the service life of the reflection floating body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water level gauges, in particular to a laser water level gauge. Background Art

[0002] A water level meter is an instrument that can automatically measure and record the water level of rivers, lakes, irrigation canals and other water bodies. It is often used to measure water levels in pump stations. Commonly used water level meters on the market include ultrasonic water level gauges, pressure level gauges, etc. Among them, the pressure level gauge measures the water level based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. This type of water level gauge is generally used to measure the water level in water tanks. The water level fluctuates little, and the measurement is more accurate when there is no silt on the bottom of the water.

[0003] Since the water level measurement condition at the pump station inlet gate is a condition with large water waves, and when there is a lot of bottom silt in the water inlet room of the forecourt, the level gauge probe needs to be repeatedly raised and lowered to adjust the water level display value, resulting in measurement accuracy. At the same time, the measurement accuracy of this level gauge will seriously decrease every one or two years, and it does not meet the ±5 cm error requirement of the scheduling requirement. It needs to be replaced frequently, resulting in a serious waste of spare parts resources. Utility Model Content

[0004] The utility model provides a laser water level meter, which can overcome certain defects of the prior art.

[0005] According to the utility model, a laser water level meter includes a pipeline and a laser displacement sensor arranged vertically up and down, a plurality of through grooves diverging from the same axis as the pipeline are arranged on the outer wall of the pipeline, a reflective float for reflecting laser emitted by the laser displacement sensor is slidably arranged between the plurality of through grooves, a cleaning mechanism for moving up and down with the water level is slidably arranged on the outer wall of the pipeline, and the reflective float is fixed on the inner circle of the cleaning mechanism.

[0006] Preferably, a box is provided at the top of the pipeline, and the laser displacement sensor is fixedly arranged in the box.

[0007] Through the above structure, the laser displacement sensor and the pipeline can be in a closed state to prevent dust and impurities from entering and affecting the measurement.

[0008] Preferably, the cleaning mechanism includes a shielding cover and a floating ring fixed on the outer wall of the reflective buoy, the outer wall of the shielding cover is provided with a plurality of openings for circulation, the bottom of the floating ring and the outer wall of the shielding cover are fixed with a plurality of fixing buckles, and the bottom of the floating ring is provided with an air bag for floating.

[0009] Through the above structure, floating impurities and foam on the water surface can be isolated, and the reflective buoy can be lifted to reduce the contact with the water surface, thereby increasing its service life.

[0010] Preferably, the reflective float includes a cone fixed at the top, a reflective plane is provided on the top of the cone for cooperating with the reflection of the laser displacement sensor, a plurality of connecting blocks are fixed on the outer wall of the reflective float, and the plurality of connecting blocks are fixed on the inner wall of the shielding cover by respectively penetrating corresponding through grooves at one end away from the reflective float.

[0011] The above structure can reduce the impact of water droplets falling on the reflecting plane on measurement when the water flow waves are large.

[0012] Preferably, the shielding cover is arranged in the shape of a right cone, and the inner wall of the shielding cover is in contact with the outer wall of the pipeline.

[0013] Through the above structure, the outer wall of the pipeline and the through groove can be cleaned through the shielding cover and the connecting block according to the change of water level, so as to avoid clogging by floating impurities and affecting the sliding of the reflective float.

[0014] The beneficial effects of the utility model are as follows:

[0015] Compared with the existing technology, it is not affected by underwater sludge and water waves, there is no need to clean the pressure taking hole of the pressure level gauge, there is no need to manually check the water level repeatedly, it has high measurement accuracy and long service life, and does not require manual regular maintenance. Through the coordinated setting of the cleaning mechanism, it can isolate floating impurities and foam on the water surface, and can also lift the reflective float to reduce contact with the water surface, thereby increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a laser water level meter;

[0017] Figure 2 It is a schematic diagram of the overall side cross-sectional structure of a laser water level meter;

[0018] Figure 3 It is a schematic diagram of the structure of a second rebound component of a laser water level gauge;

[0019] Figure 4 The figure is a schematic diagram of the structure of a first rebound component of a laser water level meter. DETAILED DESCRIPTION

[0020] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0021] Example 1

[0022] See also Figure 1-4The present embodiment provides a laser water level meter including a pipe 100 and a laser displacement sensor 140 vertically arranged up and down, a plurality of through grooves 110 coaxially divergently arranged with the pipe 100 are provided on the outer wall of the pipe 100, a reflective float 210 for reflecting the laser emitted by the laser displacement sensor 140 is slidably provided between the plurality of through grooves 110, a cleaning mechanism 120 for moving up and down with the water level is slidably provided on the outer wall of the pipe 100, and the reflective float 210 is fixed on the inner circle of the cleaning mechanism 120.

[0023] When the present embodiment is in use, the pipe 100 is vertically fixed to the desired water level through a clamp, and then the emitting end of the laser displacement sensor 140 is aligned with the reflecting plane 330, and the detection laser is irradiated onto the reflecting plane 330. The laser is reflected, and the laser displacement sensor 140 detects the reflected laser. The actual distance is calculated according to the time difference between the two and the propagation speed of the laser. The position of the zero point and the range point can be calibrated according to the actual position to obtain the actual water level height value, that is, the thickness data of the reflecting float 210 and the cleaning mechanism 120 need to be added to obtain accurate water level data. Compared with the prior art, the present invention is not affected by underwater sludge and water waves, and there is no need to clean the pressure tapping hole of the pressure level gauge, and there is no need to manually check the water level repeatedly. The measuring accuracy is high, the service life is long, and no manual regular maintenance is required.

[0024] In this embodiment, a box body 130 is connected to the top of the pipeline 100 , and the laser displacement sensor 140 is fixedly disposed in the box body 130 .

[0025] Through the above structure, the laser displacement sensor 140 and the pipeline 100 can be in a closed state, preventing dust and impurities from entering and affecting the measurement.

[0026] In this embodiment, the cleaning mechanism 120 includes a shielding cover 340 and a floating ring 360 fixed on the outer wall of the reflective float 210. The outer wall of the shielding cover 340 is provided with a plurality of openings 350 for circulation. A plurality of fixing buckles 420 are fixed to the bottom of the floating ring 360 and the outer wall of the shielding cover 340. An air bag 410 for floating is provided at the bottom of the floating ring 360.

[0027] Through the above structure, floating impurities and foam on the water surface can be isolated, and the reflective float 210 can be lifted to reduce the contact with the water surface, thereby increasing its service life.

[0028] In this embodiment, the reflective float 210 includes a cone 320 fixed at the top, and a reflective plane 330 is provided on the top of the cone 320 for cooperating with the reflection of the laser displacement sensor 140. A plurality of connecting blocks 310 are fixedly provided on the outer wall of the reflective float 210. The ends of the plurality of connecting blocks 310 away from the reflective float 210 respectively pass through the corresponding through grooves 110 and are fixed on the inner wall of the shielding cover 340.

[0029] The above structure can reduce the impact of water droplets falling on the reflection plane 330 on measurement when the water flow waves are large.

[0030] In this embodiment, the shielding cover 340 is arranged in the shape of a right cone, and the inner wall of the shielding cover 340 is in contact with the outer wall of the pipeline 100 .

[0031] Through the above structure, the outer wall of the pipeline 100 and the through groove 110 can be cleaned through the shielding cover 340 and the connecting block 310 according to the change of water level, so as to prevent the clogging of floating impurities and the influence on the sliding of the reflective float 210.

[0032] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0033] The above is a schematic description of the present invention and its implementation methods, which is not restrictive. The embodiments shown are only part of the implementation methods of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A laser water level meter, characterized in that: The invention comprises a pipeline (100) and a laser displacement sensor (140) arranged vertically up and down, wherein a plurality of through grooves (110) arranged coaxially with the pipeline (100) and diverging from each other are provided on the outer wall of the pipeline (100), a reflective float (210) for reflecting laser light emitted by the laser displacement sensor (140) is slidably provided between the plurality of through grooves (110), a cleaning mechanism (120) for moving up and down with the water level is slidably provided on the outer wall of the pipeline (100), and the reflective float (210) is fixedly provided on the inner ring of the cleaning mechanism (120).

2. A laser water level meter according to claim 1, characterized in that: The top of the pipeline (100) is connected to a box (130), and the laser displacement sensor (140) is fixedly arranged in the box (130).

3. A laser water level meter according to claim 1, characterized in that: The cleaning mechanism (120) comprises a shielding cover (340) and a floating ring (360) fixedly mounted on the outer wall of the reflective float (210); a plurality of openings (350) for circulation are provided on the outer wall of the shielding cover (340); a plurality of fixing buckles (420) are fixedly mounted on the bottom of the floating ring (360) and the outer wall of the shielding cover (340); and an air bag (410) for floating is provided at the bottom of the floating ring (360).

4. A laser water level meter according to claim 1, characterized in that: The reflective float (210) comprises a cone (320) fixedly arranged at the top, a reflective plane (330) for cooperating with the laser displacement sensor (140) for reflection is arranged at the top of the cone (320), a plurality of connection blocks (310) are fixedly arranged on the outer wall of the reflective float (210), and the ends of the plurality of connection blocks (310) away from the reflective float (210) respectively penetrate corresponding through slots (110) and are fixed on the inner wall of the shielding cover (340).

5. The laser water level meter according to claim 3, characterized in that: The shielding cover (340) is arranged in the shape of a regular cone, and the inner wall of the shielding cover (340) is in contact with the outer wall of the pipeline (100).

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