CN-122016009-A - Magnetic grid type water level monitoring device suitable for inclined slope

CN122016009ACN 122016009 ACN122016009 ACN 122016009ACN-122016009-A

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, wherein the protection pipe is arranged on the first support, the first support is arranged on the inclined slope of a river channel, a base, a magnetic grid ruler, a magnetic head, an inner guide rail, a linear bearing and an inner magnet are arranged in the protection pipe, the magnetic head is connected with an equipment box through a transmission line, a display screen, a controller and a power supply line are arranged in the equipment box, a second support is arranged on the upper side of the protection pipe, an outer guide rail is arranged on the second support, an outer sliding block is arranged on the outer guide rail, the outer sliding block is connected with a floater through a first connecting rod, a universal joint and a second connecting rod, and a water lubrication bearing and an outer magnet are arranged in the outer sliding block. The invention is applicable to various river inclined bank slopes without depending on vertical installation conditions, and solves the installation problem under complex terrains.

Inventors

ZHANG KUN
LI GANG
HUANG XIAOMIN
WANG ZHIYU
HU SHENGLI
ZHANG YULONG
ZHANG YINAN
MA JUNCHAO

Assignees

长江勘测规划设计研究有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260211

Claims (7)

1. The magnetic grid type water level monitoring device suitable for the inclined slope is characterized by comprising a protection pipe (1) and a first support (2), wherein the protection pipe (1) is installed on the first support (2), the first support (2) is installed on the inclined slope of a river channel, a base (101), a magnetic grid ruler (102), a magnetic head (103), an inner guide rail (104), a linear bearing (105) and an inner magnet (106) are arranged inside the protection pipe (1), the magnetic head (103) is connected with an equipment box (11) through a transmission line (10), a display screen (1101), a controller (1102) and a power supply line (1103) are arranged inside the equipment box (11), a second support (4) is arranged on the upper side of the protection pipe (1), an outer guide rail (3) is arranged on the second support (4), the outer guide rail (3) is provided with an outer sliding block (5), the outer sliding block (5) is connected with the floater (5) through a first connecting rod (6), a universal joint (7), a second connecting rod (8) and the floater (9), and the inner magnet (501) is provided with an outer water bearing (502).
2. A magnetic grid type water level monitoring device suitable for a slope according to claim 1, wherein the equipment box (11) adopts a waterproof shell, and is powered by alternating current through the power supply line (1103).
3. The magnetic grid type water level monitoring device suitable for the inclined side slope is characterized in that the protection pipe (1) is of a sealing waterproof structure, austenitic stainless steel is adopted, the top and the bottom of the protection pipe are sealed through end covers with rubber rings, mounting holes are formed in the end covers and used for fixing the inner guide rail (104), a waterproof connector is adopted at the outlet of the transmission line (10) at the top of the protection pipe, the magnetic grid ruler (102) is an absolute magnetic grid ruler and is fixed to a base (101) inside the protection pipe (1), the magnetic head (103) is mounted on the inner guide rail (104) through a linear bearing (105), an inner magnet (106) is arranged at the back of the protection pipe, the inner magnet (106) is arc-shaped, and the S pole faces the pipe wall of the protection pipe (1) and is approximately 1-2 mm away from the inner wall of the protection pipe (1).
4. The magnetic grid type water level monitoring device suitable for the inclined side slope according to claim 1, wherein the outer sliding block (5) is arranged on the outer guide rail (3) through a water lubrication bearing (501), an outer magnet (502) is arranged on the belly, the outer magnet (502) is arc-shaped, the N pole faces the wall of the protection tube (1), the distance between the N pole and the outer wall of the protection tube (1) is about 1-2 mm, and the N pole is in non-contact connection with the inner magnet (106) through a magnetic coupling mode.
5. The magnetic grid type water level monitoring device suitable for the inclined side slope according to claim 1, wherein the floater (9) is a sealed waterproof PVC shell, the inside of the floater is hollow and filled with air, the floater is connected with a universal joint (7) through a second connecting rod (8), the universal joint (7) is connected with an external sliding block (5) through a first connecting rod (6), when the water level of a river channel rises or falls, the floater (9) rises or falls along with the rising or falling, the external sliding block (5) is driven to slide on the external guide rail (3), the external sliding block (5) drives the internal magnet (106) and the magnetic head (103) to slide on the internal guide rail (104) in a magnetic coupling mode, the magnetic head (103) reads the corresponding scale of the magnetic grid ruler (102), a signal is transmitted to a controller (1102) in the equipment box (11) through the transmission line (10), and after the controller (1102) processes the signal, a water level value is displayed on the display screen (1101), and the water level value is: , Wherein H w is the river water level, H is the elevation of the zero graduation position at the top of the magnetic grating ruler (102), L is the reading of the magnetic grating ruler (102), a is the inclination angle of the inclined slope of the river, H 0 is the elevation difference between the river water level and the magnetic head (103), the elevation difference is related to the submerged depth of the floater (9), the length of the second connecting rod (8), the height of the universal joint (7) and the length of the first connecting rod (6), and the elevation difference value can be obtained by using the portable water gauge to read the river water level initially and then is calibrated regularly.
6. A magnetic grid type water level monitoring device suitable for a slope according to claim 1, wherein the outer guide rail (3) is cleaned periodically, and the water lubrication bearing (501) inside the outer slide block (5) is replaced periodically.
7. A magnetic grid type water level monitoring device suitable for an inclined slope according to claim 3 is characterized in that the length of the protection pipe (1) is adjusted according to different river depths, and when the protection pipe (1) is longer, the number of the first supports (2) is increased.

Description

Magnetic grid type water level monitoring device suitable for inclined slope Technical Field The invention relates to the technical field of river channel water level monitoring, in particular to a magnetic grid type water level monitoring device suitable for an inclined slope. Background The river channel water level is a key index reflecting the hydrologic dynamic state of the river basin and the water resource abundant degree, the water level change is monitored in real time, accurate data support can be provided for flood prevention and drought resistance, flood early warning is issued in time, and the life and property safety of coastal people is practically guaranteed. Meanwhile, continuous water level data is also an important foundation for realizing scientific scheduling of water resources, optimal operation of hydraulic engineering and water ecology research. Therefore, the method enhances the real-time monitoring of the river channel water level and has important significance for improving the river basin management efficiency and the disaster prevention and reduction capability. At present, a vertically installed encoder type float water level gauge is adopted for river channel water level monitoring, a mechanical transmission structure exists in the technology, abrasion and slipping are easy to occur after long-term use, accuracy is reduced, and meanwhile, a water level well is required to be arranged, so that civil engineering cost and site limitation are increased, flood discharge sections are reduced to a certain extent, and adverse effects are generated on flood control safety. Besides encoder type float type water level gauge, pressure type water level gauge, ultrasonic water level gauge, radar water level gauge and the like are used at present, wherein the pressure type water level gauge is easily affected by water density change, the ultrasonic water level gauge is sensitive to environmental interference such as temperature, humidity and dust, and the radar water level gauge equipment and later maintenance cost are high. Disclosure of Invention The embodiment of the invention aims to provide a magnetic grid type water level monitoring device suitable for an inclined slope, which is used for realizing high-precision measurement based on a magnetic grid ruler technology and an angle conversion principle, directly breaks through the dependence on vertical installation topography structurally, realizes the full sealing of a device main body through magnetic coupling transmission, has reasonable structure and strong anti-interference performance, and effectively solves the core problems that the conventional water level monitoring technology is greatly limited by the topography and has poor environmental adaptability. In order to achieve the above purpose, the present invention provides the following technical solutions: The embodiment of 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, wherein the protection pipe is arranged on the first support, the first support is arranged on the inclined slope of a river channel, a base, a magnetic grid ruler, a magnetic head, an internal guide rail, a linear bearing and an internal magnet are arranged in the protection pipe, the magnetic head is connected with an equipment box through a transmission line, a display screen, a controller and a power supply line 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 a floater through a first connecting rod, a universal joint and a second connecting rod, and a water lubrication bearing and an external magnet are arranged in the external sliding block. The equipment box adopts a waterproof shell, and is powered by alternating current through the power supply circuit. The protection tube is of a sealing waterproof structure, the top and the bottom of the protection tube are sealed through end covers with rubber rings, mounting holes are formed in the end covers and used for fixing the inner guide rail, waterproof connectors are used for sealing the outlet of the transmission line at the top of the protection tube, the magnetic grating ruler is an absolute magnetic grating ruler and is fixed to a base inside the protection tube, the magnetic head is mounted on the inner guide rail through a linear bearing, an inner magnet is arranged on the back of the magnetic head, the inner magnet is arc-shaped, the S pole faces the wall of the protection tube, and the distance between the S pole and the inner wall of the protection tube is about 1-2 mm. The external sliding block is arranged on the external guide rail through a water lubrication bearing, an external magnet is arranged at the belly