Magnetic grid type water level monitoring device suitable for inclined slope

Abstract

The invention provides a magnetic grid type water level monitoring device suitable for an inclined slope, which comprises a protection pipe and a first support, and the protection pipe is mounted on the first support; the first support is mounted on an inclined slope of a river channel; a base, a magnetic railing ruler, a magnetic head, an internal guide rail, a linear bearing and an internal magnet are arranged in the protection tube; the magnetic head is connected with the equipment box through a transmission line; a display screen, a controller and a power supply circuit are arranged in the equipment box; a second support is arranged on the upper side of the protection pipe; an external guide rail is arranged on the second support; an external sliding block is arranged on the external guide rail; the external sliding block is connected with the floater through the first connecting rod, the universal joint and the second connecting rod; a water lubrication bearing and an external magnet are arranged in the external sliding block. The device does not need to depend on vertical installation conditions, is suitable for inclined bank slopes of various river channels, and solves the installation problem under complex terrains.

Description

Technical Field

[0001] This invention relates to the field of river water level monitoring technology, specifically a magnetic grating water level monitoring device suitable for inclined slopes. Background Technology

[0002] River water levels are a key indicator reflecting the hydrological dynamics and water resource abundance / scarcity of a river basin. Real-time monitoring of water level changes provides accurate data support for flood control and drought relief, enabling timely flood warnings and effectively protecting the lives and property of people along the river. Furthermore, continuous water level data is also a crucial foundation for the scientific allocation of water resources, the optimized operation of water conservancy projects, and aquatic ecological research. Therefore, strengthening real-time monitoring of river water levels is of paramount importance for improving the efficiency of river basin management and disaster prevention and mitigation capabilities.

[0003] Currently, vertically installed encoder-type float level gauges are commonly used for river level monitoring. This technology involves a mechanical transmission structure, which is prone to wear and slippage after long-term use, leading to decreased accuracy. Furthermore, it requires the installation of level wells, which not only increases civil engineering costs and site limitations but also reduces the flood discharge cross-section to some extent, negatively impacting flood control safety. Besides encoder-type float level gauges, pressure level gauges, ultrasonic level gauges, and radar level gauges are also in use. Pressure level gauges are easily affected by changes in water density, ultrasonic level gauges are sensitive to environmental interference such as temperature, humidity, and dust, while radar level gauges have higher equipment and maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to provide a magnetic grating-type water level monitoring device suitable for inclined slopes. It achieves high-precision measurement based on magnetic grating technology and angle conversion principle, directly breaking through the dependence on vertical installation terrain from the structural point of view. It also achieves full sealing of the main body of the device through magnetic coupling transmission. The device has a reasonable structure and strong anti-interference ability, thus effectively solving the core problems of existing water level monitoring technology being greatly restricted by terrain and having poor environmental adaptability.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a magnetic grating-type water level monitoring device suitable for inclined slopes, comprising a protective pipe and a first support, wherein the protective pipe is installed on the first support; the first support is installed on the inclined slope of a river; the protective pipe contains a base, a magnetic grating ruler, a magnetic head, an internal guide rail, a linear bearing, and an internal magnet; the magnetic head is connected to an equipment box via a transmission line; the equipment box contains a display screen, a controller, and a power supply line; a second support is provided on the upper side of the protective pipe; an external guide rail is provided on the second support; an external slider is provided on the external guide rail; the external slider is connected to a float via a first connecting rod, a universal joint, a second connecting rod; and a water-lubricated bearing and an external magnet are provided inside the external slider.

[0007] The equipment enclosure is waterproof and is powered by AC power via the power supply line.

[0008] The protective tube is a sealed and waterproof structure made of austenitic stainless steel. The top and bottom are sealed with end caps with rubber rings. The end caps have mounting holes for fixing the internal guide rail. The transmission line outlet at the top is sealed with a waterproof connector. The magnetic scale is an absolute magnetic scale, fixed to a base inside the protective tube. The magnetic head is mounted on the internal guide rail via a linear bearing, and an internal magnet is located on its back. The internal magnet is arc-shaped, with its S pole facing the wall of the protective tube and approximately 1-2 mm away from the inner wall.

[0009] The external slider is mounted on the external guide rail via a water-lubricated bearing, and an external magnet is provided on its belly. The external magnet is arc-shaped, with its N pole facing the wall of the protective tube and a distance of about 1-2 mm from the outer wall of the protective tube. It is connected to the internal magnet in a non-contact manner through magnetic coupling.

[0010] The float uses a sealed, waterproof PVC shell, hollow inside and filled with air, and is connected to a universal joint via a second connecting rod. The universal joint is connected to an external slider via a first connecting rod. When the river water level rises or falls, the float rises or falls accordingly, causing the external slider to slide on the external guide rail. The external slider, through magnetic coupling, drives the internal magnet and magnetic head to slide on the internal guide rail. The magnetic head reads the corresponding scale of the magnetic scale and transmits the signal to the controller inside the equipment box through the transmission line. After processing the signal, the controller displays the water level value on the display screen. The water level value is:

[0011] Where: h wH is the elevation at the zero mark of the magnetic scale, L is the reading of the magnetic scale, a is the inclination angle of the sloping riverbank, and h0 is the elevation difference between the river water level and the magnetic head. This difference is related to the depth of the float submerged in the water, the length of the second link, the height of the universal joint, and the length of the first link. Initially, this elevation difference can be calculated by reading the river water level using a portable water gauge and should be calibrated regularly.

[0012] The external guide rail is cleaned regularly, and the water-lubricated bearing inside the external slider is replaced regularly.

[0013] The length of the protective pipe can be adjusted according to different river depths. When the protective pipe is longer, the number of the first supports can be increased.

[0014] Beneficial effects: Compared with the prior art, the present invention does not rely on vertical installation conditions, is applicable to various riverbank slopes, and solves the installation problem in complex terrain; at the same time, the overall structure of the device is reasonably designed and can effectively resist external environmental interference. While achieving high-precision and high-reliability water level monitoring, it also has low equipment and maintenance costs.

[0015] This device is suitable for long-term stable underwater operation and can be widely used in fields such as smart water conservancy construction and disaster prevention and mitigation monitoring. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a magnetic grating-type water level monitoring device suitable for sloping slopes;

[0018] Figure 2 This is a schematic diagram of the internal structure of the protective tube;

[0019] Figure 3 This is a schematic diagram of a magnetic coupling transmission structure;

[0020] Figure 4 This is a schematic diagram of the equipment box structure.

[0021] The attached diagram is labeled as follows: 1. Protective tube; 101. Base; 102. Magnetic scale; 103. Magnetic head; 104. Internal guide rail; 105. Linear bearing; 106. Internal magnet; 2. First support; 3. External guide rail; 4. Second support; 5. External slider; 501. Water-lubricated bearing; 502. External magnet; 6. First connecting rod; 7. Universal joint; 8. Second connecting rod; 9. Float; 10. Transmission line; 11. Equipment box; 1101. Display screen; 1102. Controller; 1103. Power supply line. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will now be described with reference to the accompanying drawings. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] This invention proposes a magnetic grating-type water level monitoring device suitable for inclined slopes, comprising a protective pipe 1 and a first support 2, wherein the protective pipe 1 is installed on the first support 2; the first support 2 is installed on the inclined slope of a river; the protective pipe 1 contains a base 101, a magnetic grating ruler 102, a magnetic head 103, an internal guide rail 104, a linear bearing 105, and an internal magnet 106; the magnetic head 103 is connected to an equipment box 11 via a transmission line 10; the equipment box 11 contains a display screen 1101, a controller 1102, and a power supply line 1103; a second support 4 is provided on the upper side of the protective pipe 1; an external guide rail 3 is provided on the second support 4; an external slider 5 is provided on the external guide rail 3; the external slider 5 is connected to a float 9 via a first connecting rod 6, a universal joint 7, a second connecting rod 8; the external slider 5 contains a water-lubricated bearing 501 and an external magnet 502.

[0025] The equipment box 11 has a waterproof shell and is powered by AC power through the power supply line 1103.

[0026] The protective tube 1 is a sealed and waterproof structure made of austenitic stainless steel. The top and bottom are sealed by end caps with rubber rings. The end caps have mounting holes for fixing the internal guide rail 104. The outlet of the top transmission line 10 is sealed with a waterproof connector. The magnetic scale 102 is an absolute magnetic scale, which is fixed to the base 101 inside the protective tube 1. The magnetic head 103 is mounted on the internal guide rail 104 through a linear bearing 105, and an internal magnet 106 is provided on the back. The internal magnet 106 is arc-shaped, with the S pole facing the wall of the protective tube 1 and about 1~2mm away from the inner wall of the protective tube 1.

[0027] The external slider 5 is mounted on the external guide rail 3 via a water-lubricated bearing 501, and an external magnet 502 is provided on its belly. The external magnet 502 is arc-shaped, with the N pole facing the wall of the protective tube 1 and a distance of about 1~2mm from the outer wall of the protective tube 1. It is connected to the internal magnet 106 in a non-contact manner through magnetic coupling.

[0028] The float 9 uses a sealed waterproof PVC shell, with a hollow interior filled with air, and is connected to the universal joint 7 via the second connecting rod 8. The universal joint 7 is connected to the external slider 5 via the first connecting rod 6. When the river water level rises or falls, the float 9 rises or falls accordingly, causing the external slider 5 to slide on the external guide rail 3. The external slider 5 drives the internal magnet 106 and magnetic head 103 to slide on the internal guide rail 104 via magnetic coupling. The magnetic head 103 reads the corresponding scale of the magnetic scale 102 and transmits the signal to the controller 1102 inside the equipment box 11 via the transmission line 10. After processing the signal, the controller 1102 displays the water level value on the display screen 1101. The water level value is:

[0029] ,

[0030] Where: h w H is the elevation at the zero mark of the top of the magnetic scale 102, L is the reading of the magnetic scale 102, a is the inclination angle of the sloping side of the river, and h0 is the elevation difference between the river water level and the magnetic head 103. It is related to the depth of the float 9 submerged in the water, the length of the second link 8, the height of the universal joint 7, and the length of the first link 6. Initially, the value of this elevation difference can be deduced by reading the river water level using a portable water gauge, and it should be calibrated regularly.

[0031] To improve stability, the external guide rail 3 is cleaned regularly, and the water-lubricated bearing 501 inside the external slider 5 is replaced regularly.

[0032] To improve applicability, the length of the protective pipe 1 can be adjusted according to different river depths. When the protective pipe 1 is longer, the number of first supports 2 can be increased.

[0033] Working Principle: This invention discloses a magnetic grating-type water level monitoring device suitable for inclined slopes, applicable to various inclined riverbanks. It mainly includes a protective pipe 1, a first support 2, an external guide rail 3, a second support 4, an external slider 5, a first connecting rod 6, a universal joint 7, a second connecting rod 8, and a float 9. The protective pipe 1 is installed on the first support 2, which is installed on the inclined riverbank. The second support 4 is located on the upper side of the protective pipe 1, and the external guide rail 3 is mounted on the second support 4. The external slider 5 is mounted on the external guide rail 3. The external slider 5 is connected to the first connecting rod 6, the universal joint 7, the second connecting rod 8, and a float 9. The second link 8 and the float 9 are connected; when the river water level rises or falls, the float 9 floats up and down with the river water level. The second link 8, the universal joint 7 and the first link 6 drive the external slider 5 to slide on the external guide rail 3. The external slider 5 drives the internal magnet 106 and the magnetic head 103 to slide on the internal guide rail 104 through magnetic coupling. The magnetic head 103 reads the corresponding scale of the magnetic scale 102 and transmits the signal to the controller 1102 inside the equipment box 11 through the transmission line 10. After processing the signal, the controller 1102 displays the water level value on the display screen 1101.

[0034] This invention does not require vertical installation and is applicable to various sloping riverbanks, solving the installation problem in complex terrain.

[0035] This invention features a rationally designed overall structure that effectively resists external environmental interference. While achieving high-precision and high-reliability water level monitoring, it also boasts low equipment and maintenance costs. This device is suitable for long-term stable underwater operation and can be widely applied in fields such as smart water conservancy construction and disaster prevention and mitigation monitoring.

[0036] The above description is merely an embodiment of the present invention and is not intended to limit the scope of protection of the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A magnetic grating-type water level monitoring device suitable for inclined slopes, characterized in that, The system includes a protective pipe (1) and a first support (2), wherein the protective pipe (1) is installed on the first support (2); the first support (2) is installed on the sloping side of the river; the protective pipe (1) is provided with a base (101), a magnetic scale (102), a magnetic head (103), an internal guide rail (104), a linear bearing (105), and an internal magnet (106); the magnetic head (103) is connected to the equipment box (11) through a transmission line (10); the equipment box (11) is provided with It has a display screen (1101), a controller (1102), and a power supply line (1103); a second support (4) is provided on the upper side of the protective tube (1); an external guide rail (3) is provided on the second support (4); an external slider (5) is provided on the external guide rail (3); the external slider (5) is connected by a first connecting rod (6), a universal joint (7), a second connecting rod (8), and a float (9); a water-lubricated bearing (501) and an external magnet (502) are provided inside the external slider (5).

2. The magnetic grating-type water level monitoring device suitable for inclined slopes according to claim 1, characterized in that: The equipment box (11) has a waterproof shell and is powered by AC power through the power supply line (1103).

3. The magnetic grating-type water level monitoring device suitable for inclined slopes according to claim 1, characterized in that: The protective tube (1) is a sealed and waterproof structure made of austenitic stainless steel. The top and bottom are sealed by end caps with rubber rings. The end caps have mounting holes for fixing the internal guide rail (104). The outlet of the transmission line (10) at the top is sealed with a waterproof connector. The magnetic scale (102) is an absolute magnetic scale, which is fixed to the base (101) inside the protective tube (1). The magnetic head (103) is mounted on the internal guide rail (104) through a linear bearing (105), and an internal magnet (106) is provided on the back. The internal magnet (106) is arc-shaped, with the S pole facing the wall of the protective tube (1) and a distance of about 1~2mm from the inner wall of the protective tube (1).

4. A magnetic grating-type water level monitoring device suitable for inclined slopes according to claim 1, characterized in that: The external slider (5) is mounted on the external guide rail (3) via a water-lubricated bearing (501), and an external magnet (502) is provided on its belly. The external magnet (502) is arc-shaped, with its N pole facing the wall of the protective tube (1) and a distance of about 1~2mm from the outer wall of the protective tube (1). It is connected to the internal magnet (106) in a non-contact manner through magnetic coupling.

5. A magnetic grating-type water level monitoring device suitable for inclined slopes according to claim 1, characterized in that: The float (9) is made of sealed waterproof PVC shell, hollow inside and filled with air, and is connected to the universal joint (7) through the second connecting rod (8); the universal joint (7) is connected to the external slider (5) through the first connecting rod (6); when the river water level rises or falls, the float (9) rises or falls accordingly, causing the external slider (5) to slide on the external guide rail (3). The external slider (5) drives the internal magnet (106) and the magnetic head (103) to slide on the internal guide rail (104) through magnetic coupling. The magnetic head (103) reads the corresponding scale of the magnetic scale (102) and transmits the signal to the controller (1102) inside the equipment box (11) through the transmission line (10). After processing the signal, the controller (1102) displays the water level value on the display screen (1101). The water level value is: ， Where: h w H is the elevation at the zero mark of the top of the magnetic scale (102), L is the reading of the magnetic scale (102), a is the inclination angle of the inclined slope of the river, and h0 is the elevation difference between the river water level and the magnetic head (103). It is related to the depth of the float (9) submerged in the water, the length of the second link (8), the height of the universal joint (7), and the length of the first link (6). Initially, the value of this elevation difference can be derived by reading the river water level using a portable water gauge, and it should be calibrated regularly.

6. A magnetic grating-type water level monitoring device suitable for inclined slopes according to claim 1, characterized in that: The external guide rail (3) is cleaned regularly, and the water-lubricated bearing (501) inside the external slider (5) is replaced regularly.

7. A magnetic grating-type water level monitoring device suitable for inclined slopes according to claim 3, characterized in that: The length of the protective pipe (1) is adjusted according to different river depths. When the protective pipe (1) is longer, the number of the first support (2) is increased.

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