Liquid level monitoring device for discarding well

Abstract

The utility model discloses a discarding well liquid level monitoring device which comprises a fixing device, a fixing plate is arranged on the fixing device, one side of the fixing plate is fixedly connected with a laser range finder, the bottom end of the fixing plate is in threaded connection with a guide rod, the outer side of the guide rod is in sliding connection with a floating ball, and a protection device is arranged at the bottom end of the fixing plate. High-precision liquid level measurement is provided through the laser range finder and is not influenced by impurities in a sewage environment, the problem of duct blockage of a static pressure type liquid level meter and blind area interference of an ultrasonic liquid level meter are solved, stable movement of a floating ball on the water surface is ensured by the guide rod, the problem of insufficient precision of a floating ball type liquid level meter is avoided, and the service life of the liquid level meter is prolonged. The whole device provides reliable and efficient liquid level monitoring in a complex municipal sewage environment through accurate measurement of the laser range finder and stable floating of the floating ball.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level monitoring equipment, in particular to a liquid level monitoring device for a flow diversion well. Background Technique

[0002] A flow diversion well is a drainage facility mainly used in a rainwater collection and utilization system. Its function is to discharge the rainwater with serious pollution in the early stage during rainwater collection to prevent this polluted rainwater from entering the subsequent purification system. The liquid level monitoring of the flow diversion well is the real-time monitoring of the liquid level inside the flow diversion well. Liquid level monitoring is very important for ensuring the normal operation of the flow diversion well and optimizing the urban drainage system. It can improve the efficiency of the system, reduce potential risks, and ensure the stable operation of the drainage system.

[0003] A liquid level gauge is a device commonly used for liquid level monitoring of a flow diversion well. The existing liquid level gauges generally include a static pressure type, a float type, and an ultrasonic type. The static pressure type liquid level gauge measures the liquid level by sensing the pressure of the liquid through a small hole at the bottom. However, due to the large amount of impurities in municipal sewage, the hole is easily blocked, so it can hardly be used in this environment. The float type liquid level gauge uses the buoyancy of the float to monitor the liquid level. Although it can work in the municipal sewage environment, it only provides a switch signal, with low accuracy and great application difficulty for drainage outlets with a small elevation difference. The ultrasonic liquid level gauge measures the liquid level height by emitting a fan-shaped ultrasonic wave at the wellhead. However, it has a blind area, and structures such as the weir wall in the well may interfere with the ultrasonic signal, making it difficult to accurately distinguish the liquid levels inside and outside the weir wall. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the existing liquid level gauges generally include a static pressure type, a float type, and an ultrasonic type. The static pressure type liquid level gauge measures the liquid level by sensing the pressure of the liquid through a small hole at the bottom. However, due to the large amount of impurities in municipal sewage, the hole is easily blocked, so it can hardly be used in this environment. The float type liquid level gauge uses the buoyancy of the float to monitor the liquid level. Although it can work in the municipal sewage environment, it only provides a switch signal, with low accuracy and great application difficulty for drainage outlets with a small elevation difference. The ultrasonic liquid level gauge measures the liquid level height by emitting a fan-shaped ultrasonic wave at the wellhead. However, it has a blind area, and structures such as the weir wall in the well may interfere with the ultrasonic signal, making it difficult to accurately distinguish the liquid levels inside and outside the weir wall, and to provide a liquid level monitoring device for a flow diversion well.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A liquid level monitoring device for a flow diversion well, comprising: a fixing device, on which a fixing plate is provided, a laser rangefinder is fixedly connected to one side of the fixing plate, a guiding rod is threadedly connected to the bottom end of the fixing plate, a floating ball is slidably connected to the outside of the guiding rod, and a protection device is provided at the bottom end of the fixing plate.

[0006] As a further solution of the present utility model: The fixing device includes a sliding rod, one end of the sliding rod is fixedly connected with a limiting plate, the fixing plate is slidably connected with the sliding rod, a bolt is threadedly connected to the limiting plate, one end of the bolt penetrates through the limiting plate and is rotatably connected with a fixed abutting plate.

[0007] As a further solution of the present utility model: There are two groups of the limiting plate, the bolt and the fixed abutting plate, which are symmetrically distributed on both sides of the sliding rod, and there are four groups of the sliding rods, which are symmetrically distributed between the two groups of limiting plates.

[0008] As a further solution of the present utility model: The protection device includes a connecting ring, the top end of the connecting ring is fixedly connected with the bottom end of the fixing plate, the guiding rod is arranged inside the connecting ring, a protection cylinder is threadedly connected to the inner side of the connecting ring, and through holes are formed in the protection cylinder.

[0009] As a further solution of the present utility model: There are multiple groups of the through holes, which are evenly distributed on the outer side of the protection cylinder.

[0010] As a further solution of the present utility model: The laser rangefinder is an L2S-Filled single-point laser rangefinder with waterproof and moisture-proof through potting process.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] In the present utility model, high-precision liquid level measurement is provided by the laser rangefinder, which is not affected by impurities in the sewage environment, overcomes the problem of pore blockage of the hydrostatic liquid level gauge and the blind area interference of the ultrasonic liquid level gauge. The guiding rod ensures the stable movement of the floating ball on the water surface, avoiding the problem of insufficient accuracy of the floating ball type liquid level gauge. The overall device provides reliable and efficient liquid level monitoring in a complex municipal sewage environment through the accurate measurement of the laser rangefinder and the stable floating of the floating ball. Through the sliding connection between the sliding rod and the fixing plate, the flexible adjustment of the device is realized, adapting to the heights and positions of different wellheads. The symmetrical distribution of the limiting plate and the bolt ensures the stable fixation of the device in the well, preventing displacement caused by irregular well walls or vibrations. The overall design simplifies the installation process, enabling users to easily install and adjust the device, thus ensuring the accuracy and reliability of liquid level monitoring. The guiding rod and internal components are effectively protected from corrosive substances and impurities in the sewage by the protection device, ensuring the long-term stable operation of the equipment. Secondly, the through holes on the protection cylinder allow water to flow smoothly through, preventing blockage and sediment accumulation, thereby maintaining the measurement accuracy and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of a flow diversion well liquid level monitoring device described in the present utility model;

[0014] Figure 2 It is a cross-sectional view of the overall structure of a liquid level monitoring device for a flow diversion well described in the present utility model;

[0015] Figure 3 It is a truncation schematic diagram of a protection device in a liquid level monitoring device for a flow diversion well described in the present utility model;

[0016] Figure 4 It is a sectional truncation schematic diagram of a protection device in a liquid level monitoring device for a flow diversion well described in the present utility model;

[0017] Figure 5 It is a structural schematic diagram of a fixing device in a liquid level monitoring device for a flow diversion well described in the present utility model;

[0018] Figure 6 It is a structural schematic diagram of a protection device in a liquid level monitoring device for a flow diversion well described in the present utility model.

[0019] In the figure: 1. Fixing device; 11. Sliding rod; 12. Limiting plate; 13. Bolt; 14. Fixed abutting plate; 2. Fixing plate; 3. Laser rangefinder; 4. Guide rod; 5. Floating ball; 6. Protection device; 61. Connecting ring; 62. Protection cylinder; 63. Through hole. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following will describe the embodiments according to the overall structure of the present utility model.

[0022] Referring to Figures 1 to 4 , in the embodiment of the present utility model, a liquid level monitoring device for a flow diversion well includes: a fixing device 1, on which a fixing plate 2 is provided. On one side of the fixing plate 2, a laser rangefinder 3 is fixedly connected. At the bottom end of the fixing plate 2, a guide rod 4 is threadedly connected. A floating ball 5 is slidably connected to the outside of the guide rod 4. At the bottom end of the fixing plate 2, a protection device 6 is provided. The laser rangefinder 3 is an L2S-Filled single-point laser rangefinder sensor that is waterproof and airproof through a potting process.

[0023] Referring to Figure 5 , the fixing device 1 includes a sliding rod 11. At one end of the sliding rod 11, a limiting plate 12 is fixedly connected. The fixing plate 2 is slidably connected to the sliding rod 11. A bolt 13 is threadedly connected to the limiting plate 12. One end of the bolt 13 penetrates through the limiting plate 12 and is rotatably connected to a fixed abutting plate 14. There are two sets of the limiting plate 12, the bolt 13 and the fixed abutting plate 14, which are symmetrically distributed on both sides of the sliding rod 11. There are four sets of the sliding rods 11, which are symmetrically distributed between the two sets of limiting plates 12.

[0024] Adopting the above solution: Through the sliding connection between the sliding rod 11 and the fixing plate 2, the flexible adjustment of the device is realized, adapting to the heights and positions of different wellheads. The symmetrical distribution of the limiting plate 12 and the bolt 13 ensures the stable fixation of the device in the well, preventing displacement caused by irregular well walls or vibrations. The overall design simplifies the installation process, enabling users to conveniently install and adjust the device, thereby ensuring the accuracy and reliability of liquid level monitoring.

[0025] Referring to Figure 6, the protection device 6 includes a connecting ring 61. The top end of the connecting ring 61 is fixedly connected to the bottom end of the fixing plate 2. The guide rod 4 is arranged inside the connecting ring 61. A protection cylinder 62 is threadedly connected to the inner side of the connecting ring 61. Through holes 63 are provided on the protection cylinder 62. There are multiple groups of through holes 63, which are evenly distributed on the outer side of the protection cylinder 62.

[0026] With the above solution: The protection device 6 effectively protects the guide rod 4 and internal components from corrosive substances and impurities in the sewage, ensuring the long-term stable operation of the equipment. Secondly, the through holes 63 on the protection cylinder 62 allow water to flow smoothly through, preventing blockage and accumulation of sediments, thereby maintaining the measurement accuracy and reliability of the device.

[0027] The working principle of the present utility model is as follows: When in use, first put the floating ball 5 on the guide rod 4, then threadedly connect the guide rod 4 to the fixing plate 2, and fix the laser rangefinder 3 on one side of the fixing plate 2. Then place the whole device into the flow diversion well, make the floating ball 5 float on the water surface, and then rotate the bolt 13 to push the fixed abutting plate 14 so that the fixed abutting plate 14 abuts against the inner wall of the flow diversion well to fix the device inside the flow diversion well. During monitoring, the laser rangefinder 3 projects the laser onto the floating ball 5. Since there is no light in the well, the laser rangefinder 3 can obtain the actual liquid level by subtracting the height difference of the floating ball 5 from the well depth, thus achieving accurate height measurement; The laser rangefinder 3 provides high-precision liquid level measurement, which is not affected by impurities in the sewage environment, overcoming the problems of pore blockage of the static pressure type liquid level gauge and blind area interference of the ultrasonic liquid level gauge. The guide rod 4 ensures the stable movement of the floating ball 5 on the water surface, avoiding the problem of insufficient accuracy of the floating ball type liquid level gauge. The overall device provides reliable and efficient liquid level monitoring in a complex municipal sewage environment through the accurate measurement of the laser rangefinder 3 and the stable floating of the floating ball 5. Through the sliding connection between the sliding rod 11 and the fixing plate 2, flexible adjustment of the device is realized to adapt to the heights and positions of different wellheads. The symmetric distribution of the limiting plate 12 and the bolt 13 ensures the stable fixation of the device in the well, preventing displacement caused by irregular well walls or vibrations. The overall design simplifies the installation process, enabling users to easily install and adjust the device, thereby ensuring the accuracy and reliability of liquid level monitoring. The protection device 6 effectively protects the guide rod 4 and internal components from corrosive substances and impurities in the sewage, ensuring the long-term stable operation of the equipment. Secondly, the through holes 63 on the protection cylinder 62 allow water to flow smoothly through, preventing blockage and accumulation of sediments, thereby maintaining the measurement accuracy and reliability of the device.

[0028] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. A liquid level monitoring device for abandoned wells, characterized in that: include: A fixing device (1), wherein a fixing plate (2) is provided on the fixing device (1), a laser rangefinder (3) is fixedly connected to one side of the fixing plate (2), a guide rod (4) is threadedly connected to the bottom end of the fixing plate (2), a floating ball (5) is slidably connected to the outside of the guide rod (4), and a protective device (6) is provided at the bottom end of the fixing plate (2).

2. The abandoned well liquid level monitoring device according to claim 1, characterized in that: The fixing device (1) comprises a sliding rod (11), one end of the sliding rod (11) is fixedly connected to a limiting plate (12), the fixing plate (2) is slidably connected to the sliding rod (11), a bolt (13) is threadedly connected to the limiting plate (12), one end of the bolt (13) passes through the limiting plate (12) and is rotatably connected to a fixing plate (14).

3. The abandoned well liquid level monitoring device according to claim 2 is characterized in that: The limiting plates (12), bolts (13) and fixed abutment plates (14) are provided in two groups and are symmetrically distributed on both sides of the sliding rod (11); the sliding rod (11) is provided in four groups and are symmetrically distributed between the two groups of limiting plates (12).

4. The abandoned well liquid level monitoring device according to claim 3 is characterized in that: The protection device (6) comprises a connecting ring (61), the top end of the connecting ring (61) is fixedly connected to the bottom end of the fixing plate (2), the guide rod (4) is arranged inside the connecting ring (61), a protection tube (62) is threadedly connected to the inner side of the connecting ring (61), and a through hole (63) is formed in the protection tube (62).

5. The abandoned well liquid level monitoring device according to claim 4, characterized in that: The through holes (63) are provided in multiple groups and are evenly distributed outside the protective tube (62).

6. The abandoned well liquid level monitoring device according to claim 5, characterized in that: The laser distance meter (3) is an L2S-Filled single-point laser distance sensor that is waterproof and gas-proofed by a glue filling process.

Images