Reflection pool overflow water leveling device applied to non-contact water level gauge verification system

Abstract

The utility model discloses a reflection pool overflow water leveling device applied to a non-contact water level gauge verification system. The reflection pool overflow water leveling device comprises an overflow reflection pool, a water supply device, a water supply pipeline and a water return pipeline, the overflow reflection pool is divided into an inner ring part and an outer ring part, the inner ring part serves as a reflection pool, and the outer ring part serves as an overflow groove; one end of the water supply pipeline is communicated with the inner ring part, and the other end of the water supply pipeline is communicated with a water supply device; and the outer ring part is communicated with one end of the water return pipeline. According to the non-contact type water level gauge, water overflows into the overflow groove after the reflection pool is full of water, so that the reflection pool is always kept at a fixed water level (namely the full water state) and is not influenced by any equipment aging and external factors, and the detection precision of the non-contact type water level gauge is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument calibration, in particular to a reflecting pool overflow water leveling device applied to a non-contact water level gauge calibration system. Background Art

[0002] Water level meters are mainly used to measure hydrological data of large rivers, lakes, reservoirs, etc. There are many types of water level meters, which are widely used in hydrological testing, water environment monitoring, water volume measurement and other measurement work. However, due to the relatively harsh hydrological environment of my country's large rivers, water level meters will be damaged in various ways after being used for a period of time, causing changes in various parameters of the instrument and affecting the measurement accuracy of the instrument. Therefore, in order to ensure the measurement accuracy of the water level meter, it is necessary to regularly recalibrate the instrument through the calibration system to determine its various performance indicators.

[0003] The non-contact water level meter calibration system is a device used to calibrate non-contact water level meters. Its principle is to use air as the transmission medium, and utilize the hydrostatic reflection of waves (radar waves, sound waves, lasers, etc.) on the water surface to measure the distance between the non-contact water level meter being calibrated and the water surface of the pool, and compare it with traceable standard instruments to calibrate the performance indicators of the non-contact water level meter being calibrated.

[0004] The existing calibration system usually sets up the non-contact water level meter to be calibrated above the still water reflecting pool, and drives the non-contact water level meter to move vertically through the vertical moving mechanism to obtain multiple sets of data. By comparing the data measured by the non-contact water level meter to the data of the standard measuring device, the various performance indicators of the non-contact water level meter to be calibrated can be calculated, and a certificate of conformity corresponding to each performance indicator can be issued. The still water reflecting pool is usually more than 4 meters in diameter (the diameter is related to the vertical stroke, the larger the vertical stroke, the larger the corresponding diameter).

[0005] In the conventional non-contact water level gauge calibration, water is supplied to the reflecting pool through the water supply device, and the water level in the reflecting pool is measured by the pressure or ultrasonic water level gauge installed in the reflecting pool. The water supply is stopped when a certain water level is reached. Due to the delay of the water pump switch feedback and the measurement error of the water level gauge itself, the actual water level of the reflecting pool usually has an error of 0.5mm-1mm. With the long-term use and aging of the water pump and the feedback water level gauge, the error will also increase, thus affecting the calibration accuracy of the non-contact water level gauge. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a reflecting pool overflow water leveling device applied to a non-contact water level gauge calibration system, which provides a high-precision and stable reflection reference surface for the non-contact water level gauge calibration, thereby improving the calibration accuracy of the equipment.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A reflecting pool overflow water leveling device used in a non-contact water level gauge calibration system comprises an overflow reflecting pool, a water supply device, a water supply pipeline and a return pipeline; the overflow reflecting pool is divided into an inner ring part and an outer ring part, the inner ring part is used as a reflecting pool, and the outer ring part is used as an overflow trough;

[0009] One end of the water supply pipeline is connected to the inner ring part, and the other end is connected to the water supply device; the outer ring part is connected to one end of the return water pipeline.

[0010] Furthermore, the water supply device is a water tank, the other end of the water supply pipeline is connected to the water tank through a water supply valve, and the other end of the return water pipeline is connected to the water tank through a drain valve and a water pump.

[0011] Furthermore, the height difference between the water tank and the overflow reflecting pool is at least 1.5 m, and the water in the water tank flows into the inner ring part by gravity.

[0012] Furthermore, a plurality of leveling structures are evenly arranged at the bottom of the overflow reflecting pool for leveling the overflow reflecting pool.

[0013] Furthermore, the leveling structure includes a supporting stud and an adjusting bolt, wherein the lower end of the adjusting bolt is rotatably connected to the supporting stud, and the upper end of the adjusting bolt is rotatably threadedly connected to the bottom of the overflow reflecting pool.

[0014] Furthermore, the top surface of the outer ring portion is located lower than the top surface of the inner ring portion.

[0015] Furthermore, the reflecting pool overflow water leveling device also includes an energy dissipation turbulence mechanism, which is arranged at the bottom of the overflow reflecting pool, and includes a blind ditch and an energy dissipation grille; the blind ditch is respectively connected to the inner ring part and one end of the water supply pipeline; an energy dissipation grille is also provided between the blind ditch and the inner ring part.

[0016] The beneficial effect of the utility model is that when the reflecting pool is full, the water will overflow into the overflow trough, so the reflecting pool always maintains a fixed water level (i.e., full water state), is not affected by any equipment aging and external factors, and avoids affecting the calibration accuracy of the non-contact water level meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the overflow water leveling device of the reflecting pool in the embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection between the overflow reflecting pool and the leveling structure in the embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the connection between the overflow reflecting pool and the energy dissipation turbulence mechanism in the embodiment of the utility model. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0021] This embodiment provides a reflecting pool overflow water leveling device for a non-contact water level gauge calibration system. Figure 1-3 As shown, it includes an overflow reflecting pool 1, a water tank 2, a water supply pipeline 3 and a return pipeline 4; the overflow reflecting pool 1 is divided into an inner ring part 11 and an outer ring part 12, the inner ring part 11 is used as a reflecting pool (depth ≥ 0.06m), and the outer ring part 12 is used as an overflow trough;

[0022] One end of the water supply pipe 3 is connected to the inner ring part 11, and the other end is connected to the water tank 2 through the water supply valve 5; the outer ring part 12 is connected to one end of the return pipe 4, and the other end of the return pipe 4 is connected to the water tank 2 through the drain valve 6 and the water pump 7.

[0023] In this embodiment, the height difference between the water tank 2 and the overflow reflecting pool 1 is at least 1.5 m, and the water in the water tank 2 flows into the inner ring portion 11 by gravity.

[0024] In this embodiment, a plurality of leveling structures 8 are evenly arranged at the bottom of the overflow reflecting pool 1 for leveling the overflow reflecting pool 1 .

[0025] Specifically, in this embodiment, the leveling structure 8 includes a support stud 81 and an adjusting bolt 82, the lower end of the adjusting bolt 82 is rotatably connected to the support stud 81, and the upper end is rotatably threadedly connected to the bottom of the overflow reflecting pool 1. When leveling is required, the adjusting bolt 82 is rotated to drive one side of the connected overflow reflecting pool 1 to move up and down, so that the overflow reflecting pool 1 can be leveled.

[0026] In this embodiment, the top surface of the outer ring portion 12 is located lower than the top surface of the inner ring portion 11 .

[0027] In this embodiment, the reflecting pool overflow water leveling device also includes an energy dissipation turbulence mechanism, which is arranged at the bottom of the overflow reflecting pool 1 and includes a blind ditch 9 and an energy dissipation grid 10; the blind ditch 9 is respectively connected to the inner ring part 11 and one end of the water supply pipeline 3; an energy dissipation grid 10 is also arranged between the blind ditch 9 and the inner ring part 11. The blind ditch and the energy dissipation grid can eliminate the fluctuations generated when the water supply enters the overflow reflecting pool, reducing the disturbance of the water supply to the water in the inner ring part.

[0028] The working principle of the above-mentioned reflecting pool overflow water leveling device is:

[0029] When using for the first time, first fill the water tank with clean water. Then open the water supply valve. At this time, the clean water in the water tank flows through the water supply pipeline to the inner ring part of the overflow reflection pool 1. When the water in the inner ring part is full, it will overflow into the outer ring part. Open the water pump and the drain valve, and the water in the outer ring part will flow back to the water tank 2, thus forming a stable self-circulation system. The water in the inner ring part always remains full and overflowing, thereby keeping the water level constant.

[0030] For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should be included in the protection scope of the claims of the utility model.

Claims

1. A reflecting pool overflow leveling device used in a non-contact water level gauge calibration system, characterized in that: The invention comprises an overflow reflecting pool (1), a water supply device, a water supply pipeline (3) and a return pipeline (4); the overflow reflecting pool (1) is divided into an inner ring part (11) and an outer ring part (12); the inner ring part (11) serves as a reflecting pool, and the outer ring part (12) serves as an overflow trough; One end of the water supply pipeline (3) is connected to the inner ring part (11), and the other end is connected to the water supply device; the outer ring part (12) is connected to one end of the return water pipeline (4).

2. The reflecting pool overflow water leveling device used in the non-contact water level gauge calibration system according to claim 1, characterized in that: The water supply device is a water tank (2), the other end of the water supply pipeline (3) is connected to the water tank (2) via a water supply valve (5), and the other end of the return water pipeline (4) is connected to the water tank (2) via a drainage valve (6) and a water pump (7).

3. The reflecting pool overflow water leveling device used in the non-contact water level gauge calibration system according to claim 2, characterized in that: The height difference between the water tank (2) and the overflow reflecting pool (1) is at least 1.5 m, and the water in the water tank (2) flows into the inner ring part (11) by gravity.

4. The reflecting pool overflow water leveling device for non-contact water level gauge calibration system according to claim 1, characterized in that: A plurality of leveling structures (8) are evenly arranged on the bottom of the overflow reflecting pool (1) for leveling the overflow reflecting pool (1).

5. The reflecting pool overflow water leveling device used in the non-contact water level gauge calibration system according to claim 4, characterized in that: The leveling structure (8) comprises a supporting stud (81) and an adjusting bolt (82); the lower end of the adjusting bolt (82) is rotatably connected to the supporting stud (81), and the upper end is rotatably threadedly connected to the bottom of the overflow reflecting pool (1).

6. The reflecting pool overflow water leveling device used in the non-contact water level gauge calibration system according to claim 1, characterized in that: The top surface of the outer ring portion (12) is located lower than the top surface of the inner ring portion (11).

7. The reflecting pool overflow water leveling device used in the non-contact water level gauge calibration system according to claim 1, characterized in that: It also includes an energy dissipation turbulence mechanism, which is arranged at the bottom of the overflow reflecting pool (1) and includes a blind ditch (9) and an energy dissipation grille (10); the blind ditch (9) is respectively connected to the inner ring part (11) and one end of the water supply pipeline (3); and an energy dissipation grille (10) is also arranged between the blind ditch (9) and the inner ring part (11).

Images