Water level detection device with intelligent sensor for water conservancy project and detection method

Abstract

The invention discloses a water level detection device with an intelligent sensor and used for hydraulic engineering and a detection method, and relates to the technical field of hydraulic engineering, the water level detection device comprises a fixed support, an ultrasonic water level gauge, an electric box, a solar cell panel and the intelligent sensor arranged in the fixed support, and further comprises a flow blocking structure arranged on the fixed support, the fluctuation limiting module is used for limiting fluctuation generated during water surface detection; the flow choking structure comprises a connecting frame, the connecting frame is installed on the outer surface of the fixed support, the middle of the connecting frame is sleeved with a first movable frame, a gear is installed in the connecting frame, a circular ring piece is installed at the bottom end of the first movable frame, a flow choking pipe is installed in the middle of the circular ring piece, and the bottom of the flow choking pipe is sleeved with a sleeve. The flow speed of water entering the flow blocking pipe and the sleeve is limited through the sleeve, the water surface of the detection area can be kept in a horizontal state, and then the water level detection result is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a water level detection device and a detection method for a water conservancy engineering project with an intelligent sensor. Background Art

[0002] Water level refers to the elevation of the free water surface relative to a certain base surface. The distance between the water surface and the river bottom is called the water depth. The base surface used to calculate the water level can be a characteristic sea level elevation at a certain place as the zero-point leveling base surface, called the absolute base surface. The Yellow Sea base surface is commonly used. The elevation of a specific point can also be used as a reference to calculate the zero point of the water level, which is called the measuring station base surface.

[0003] In water conservancy projects, water level detection is a key link in water conservancy management and disaster prevention and mitigation. It is directly related to important tasks such as water conservancy construction, flood control and drought relief. Water level data is not only the basis for water conservancy project construction and management, but also an important reference for calculating other hydrological data. Among them, ultrasonic water level meters are common devices for detecting water levels. They can detect water levels by emitting ultrasonic waves and receiving reflected waves formed by ultrasonic waves on the water surface. Ultrasonic water level meters in the prior art are usually suitable for observing water levels in water bodies with no vertical surfaces on the shore and small water level fluctuations. When the water surface is undulating or wavy, the water surface will appear irregularly wavy. Therefore, the direction of refraction of ultrasonic waves emitted by ultrasonic water level meters will change (such as Figure 8 and Fig. 9 As shown in the figure), at this time, it is difficult for the ultrasonic water level meter to receive the reflected wave, which affects the effect of water level detection. At the same time, garbage and other debris sometimes float on the river surface. If foreign objects move directly under the ultrasonic water level meter, it will also affect the ultrasonic water level meter's water level detection results. Summary of the invention

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art and to provide a water level detection device and a detection method for a water conservancy project with an intelligent sensor.

[0005] To achieve the above object, the present invention provides the following technical solution: a water level detection device and detection method for a water conservancy project with an intelligent sensor, comprising a fixed bracket, on which an ultrasonic water level meter, an electrical box, a solar cell panel and an intelligent sensor inside the fixed bracket are arranged, and further comprising: A flow-blocking structure, which is arranged on a fixed bracket and is used to limit the fluctuations generated during water surface detection; Among them, the choke structure includes a connecting frame, which is installed on the outer surface of the fixed bracket, a first movable frame is sleeved in the middle of the connecting frame, a gear is installed inside the connecting frame, a circular ring is installed at the bottom end of the first movable frame, a choke tube is installed in the middle of the circular ring, a sleeve is sleeved at the bottom of the choke tube, an airbag is sleeved on the outer surface of the choke tube, a first extrusion piece is installed on the top of the airbag, a first spring is sleeved on the outer surface of the choke tube, a first slot is opened inside the first movable frame, a movable rod is sleeved inside the first slot, connecting pieces and racks are respectively installed at both ends of the movable rod, a second spring is sleeved on the outer surface of the movable rod, and a filter is installed at the bottom of the sleeve.

[0006] As a preferred solution of the present invention, a second movable frame is sleeved inside the first movable frame, a second slot is opened on the outside of the second movable frame, a fixed shaft is installed inside the second slot, a sliding block is installed on the inside of the first movable frame, a third spring is sleeved on the outer surface of the fixed shaft, a conical plate is installed on the inner wall of the choke tube, a second extrusion member is installed on the bottom of the conical plate via a connecting shaft, and the choke tube is located directly below the ultrasonic water level meter.

[0007] As a preferred solution of the present invention, the first extrusion member is in a "P" shape, the top end of the first extrusion member passes through the circular ring member and is in extrusion contact with the connecting member, when the first extrusion member extrudes the connecting member, the rack can engage with the gear, and the bottom of the sleeve is conical.

[0008] As a preferred solution of the present invention, the first spring is elastically supported between the airbag and the circular ring member. When the airbag is subjected to the buoyancy of the water surface, the first spring is compressed. When the bottom surface of the airbag floats on the water surface, the top of the first extrusion member is in an extrusion state on the connecting member. When the bottom surface of the airbag is lower than the water surface, the top of the first extrusion member moves to the top of the connecting member to release the extrusion of the connecting member.

[0009] As a preferred solution of the present invention, the second spring is elastically supported between the connecting member and the first notch, and when the second spring presses the connecting member, the connecting member can drive the rack and the gear to separate through the movable rod.

[0010] As a preferred solution of the present invention, the second extrusion piece is matched with the filter hole of the filter plate, and when the sleeve moves upward along the inner wall of the choke tube, the second extrusion piece can pass through the filter plate, and the surface of the conical plate is in the shape of a leak hole.

[0011] As a preferred solution of the present invention, the slider is slidably matched with the second notch, and the fixed shaft passes through the slider and is sleeved with the slider.

[0012] As a preferred solution of the present invention, the top end of the second movable frame passes through the first movable frame, and the third spring is elastically supported between the slider and the second notch.

[0013] In addition, the present invention also provides a water level detection method for a water conservancy project, comprising the following steps: S1. Set the water level detection area. Through the cooperation between the first movable frame and the connecting frame, the first movable frame can move up and down along the inside of the connecting frame. At the same time, through the buoyancy of the airbag, it can adapt to the height of the water level, so that the position of the choke tube is always higher than the water level, to prevent foreign objects on the river surface from floating to the water level detection area; S2. Limit the fluctuation of the detection area. Through the buoyancy of the airbag, the choke tube can be limited by the circular ring. At the same time, since the bottom of the sleeve is conical, the flow rate of water entering the choke tube and the sleeve can be limited, so that the fluctuation of the external water flow is not easy to affect the detection area. At this time, the fluctuation of the external water flow will only cause the height change of the water surface inside the choke tube, and it is not easy to form waves; S3. Adapt to water level height. When the water level drops, the buoyancy of the airbag will increase, so that the first extrusion member will rise higher and release the extrusion of the connecting member. Similarly, when the connecting member is released from the extrusion, the choke tube will be released to allow the airbag to float on the water surface, which can adapt to different water levels; S4. Anti-clogging treatment: through the cooperation between the sleeve and the conical plate, when the sleeve is affected by the ups and downs of the water flow, the water flow will drive the sleeve to move along the inner wall of the choke tube. At the same time, through the cooperation between the connecting shaft and the second extrusion piece, when the sleeve moves, the second extrusion piece will pass through the filter plate to clear the filter plate, preventing the scale in the water from clogging the filter plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention utilizes the buoyancy of the airbag. When the airbag floats on the water surface, the gravity of the circular ring member will drive the connecting member and the first extrusion member to be squeezed, so that the rack can be driven to move through the movable rod, and the first movable frame can be limited by the cooperation between the rack and the gear. Therefore, the choke tube can be limited by the circular ring member, so that the external water flow will not cause the choke tube to shake. Moreover, since the bottom of the sleeve is conical, the flow rate of water entering the choke tube and the sleeve can be limited. At this time, the fluctuation of the external water flow will only cause the water surface inside the choke tube to change in height, which can keep the water surface in the detection area in a horizontal state, thereby making the water level detection result more accurate.

[0015] Second, the present invention cooperates between the sleeve and the choke tube. When the airbag floats on the water surface, the choke tube is in a positioned state. At this time, if the water flows, the sleeve is tapered, and the force acting on the surface of the sleeve will exert an upward force on the sleeve, thereby driving the sleeve to move along the inner side of the choke tube. At this time, the second extrusion member will pass through the filter to avoid clogging of the filter. At the same time, the second movable frame can be driven to move upward along the inner side of the first movable frame through the cooperation between the second movable frame and the first movable frame. At this time, the fixed shaft will move along the inside of the slider, so that the bottom of the second slot cavity squeezes the third spring, thereby driving the second movable frame to reset when the water flow calms down.

[0016] 3. The buoyancy of the airbag in the present invention will be affected when the water level drops. At this time, the elastic force of the first spring will drive the first extrusion member to move downward and release the extrusion of the connecting member, so that the connecting member can be reset by the elastic force of the second spring and the rack and gear can be separated by the movable rod, thereby releasing the limit on the first movable frame, allowing the first movable frame to move downward along the inner side of the connecting frame and drive the airbag to float on the water surface again, thereby making the choke tube always higher than the water surface, preventing foreign objects on the river surface from floating to the water level detection area.

[0017] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional structural diagram of the side of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle; Figure 4 It is a partial cross-sectional structural schematic diagram of the front side of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 6 It is a schematic diagram of the disassembly structure of the choke tube and the sleeve of the present invention; Figure 7 It is a schematic diagram of the disassembly structure of the first extrusion member and the connecting member of the present invention; Figure 8 It is a schematic diagram of the reflection principle of sound waves of the ultrasonic water level meter of the present invention when the water surface is flat; Fig. 9It is a schematic diagram of the reflection principle of sound waves of the ultrasonic water level meter of the present invention when the water surface is fluctuating.

[0019] In the figure: 1, fixed bracket; 2, ultrasonic water level meter; 3, electrical box; 4, solar panel; 5, connecting frame; 6, first movable frame; 7, gear; 8, choke tube; 9, sleeve; 10, airbag; 11, circular ring; 12, first extrusion member; 13, first spring; 14, first notch; 15, movable rod; 16, connecting member; 17, second spring; 18, rack; 19, second movable frame; 20, second notch; 21, slider; 22, fixed shaft; 23, third spring; 24, conical plate; 25, connecting shaft; 26, second extrusion member; 27, filter. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-9 As shown, the present invention provides a water level detection device and detection method for a water conservancy project with an intelligent sensor, comprising a fixed bracket 1, on which an ultrasonic water level meter 2, an electric box 3, a solar cell panel 4 and an intelligent sensor inside the fixed bracket 1 are arranged, and also includes: A flow-blocking structure, which is arranged on the fixed bracket 1 and is used to limit the fluctuations generated during water surface detection; Among them, the choke structure includes a connecting frame 5, which is installed on the outer surface of the fixed bracket 1, a first movable frame 6 is sleeved in the middle of the connecting frame 5, a gear 7 is installed inside the connecting frame 5, a circular ring 11 is installed at the bottom end of the first movable frame 6, a choke tube 8 is installed in the middle of the circular ring 11, a sleeve 9 is sleeved at the bottom of the choke tube 8, an airbag 10 is sleeved on the outer surface of the choke tube 8, a first extrusion member 12 is installed on the top of the airbag 10, a first spring 13 is sleeved on the outer surface of the choke tube 8, a first notch 14 is opened inside the first movable frame 6, a movable rod 15 is sleeved inside the first notch 14, a connecting member 16 and a rack 18 are respectively installed at both ends of the movable rod 15, a second spring 17 is sleeved on the outer surface of the movable rod 15, and a filter plate 27 is installed at the bottom of the sleeve 9.

[0022] Through the buoyancy of the airbag 10, when the airbag 10 floats on the water surface, due to the gravity of the circular ring member 11, the connecting member 16 and the first extrusion member 12 will be squeezed, so that the rack 18 can be driven to move through the movable rod 15, and the first movable frame 6 can be limited by the cooperation between the rack 18 and the gear 7. Therefore, the choke tube 8 can be limited by the circular ring member 11, so that the external water flow will not cause the choke tube 8 to shake, and because the bottom of the sleeve 9 is conical, the flow rate of water entering the choke tube 8 and the sleeve 9 can be limited. At this time, the fluctuation of the external water flow will only cause the water surface inside the choke tube 8 to change up and down, which can keep the water surface in the detection area horizontal.

[0023] like Figure 5 , 6 As shown, the interior of the first movable frame 6 is sleeved with the second movable frame 19, the outer side of the second movable frame 19 is provided with a second slot 20, the interior of the second slot 20 is installed with a fixed shaft 22, the inner side of the first movable frame 6 is installed with a slider 21, the outer surface of the fixed shaft 22 is sleeved with a third spring 23, the inner wall of the choke tube 8 is installed with a conical plate 24, the bottom of the conical plate 24 is installed with a second extrusion member 26 through a connecting shaft 25, and the choke tube 8 is located directly below the ultrasonic water level meter 2.

[0024] Through the cooperation between the sleeve 9 and the choke tube 8, when the water flow surges, the sleeve 9 will be driven to move along the inner side of the choke tube 8, so that through the cooperation between the second movable frame 19 and the first movable frame 6, the second movable frame 19 can be driven to move upward along the inner side of the first movable frame 6. At this time, the fixed shaft 22 will move along the inside of the slider 21, so that the bottom of the inner cavity of the second slot 20 squeezes the third spring 23, so that the second movable frame 19 can be driven to reset when the water flow calms down.

[0025] like Figure 2 , 3 As shown, the first extrusion member 12 is "P" shaped, the top end of the first extrusion member 12 passes through the circular ring member 11 and is in contact with the connecting member 16 by extrusion. When the first extrusion member 12 squeezes the connecting member 16, the rack 18 can mesh with the gear 7, and the bottom of the sleeve 9 is conical.

[0026] Through the design of the first extrusion member 12, when the first extrusion member 12 squeezes the connecting member 16, the movable rod 15 and the rack 18 can be driven to move through the connecting member 16, so that the first movable frame 6 can be limited by the cooperation between the rack 18 and the gear 7.

[0027] like Figure 2 , 3As shown, the first spring 13 is elastically supported between the airbag 10 and the circular ring 11. When the airbag 10 is subjected to the buoyancy of the water surface, the first spring 13 will be compressed. When the bottom surface of the airbag 10 floats on the water surface, the top of the first extrusion member 12 is in an extrusion state with respect to the connecting member 16. When the bottom surface of the airbag 10 is lower than the water surface, the top of the first extrusion member 12 will move to the top of the connecting member 16 to release the extrusion of the connecting member 16.

[0028] Through the design of the first spring 13, the airbag 10 has good elastic reset performance. At this time, since the first spring 13 is in a compressed state, when the airbag 10 is separated from the water surface, an elastic force will be applied to the airbag 10, so that the first extrusion member 12 can be reset by the airbag 10.

[0029] like Figure 2 , 3 As shown, the second spring 17 is elastically supported between the connecting member 16 and the first notch 14 . When the second spring 17 presses the connecting member 16 , the connecting member 16 can drive the rack 18 to separate from the gear 7 through the movable rod 15 .

[0030] Through the design of the second spring 17, the connecting member 16 has elastic reset performance at both ends. At this time, since the second spring 17 is in a compressed state, an elastic force will be applied to the connecting member 16, so that the rack 18 can be driven to separate from the gear 7 through the movable rod 15, and then the limit of the first movable frame 6 can be released.

[0031] like Figure 6 As shown, the second extrusion piece 26 is matched with the filter hole of the filter plate 27. When the sleeve 9 moves upward along the inner wall of the choke tube 8, the second extrusion piece 26 can pass through the filter plate 27, and the surface of the conical plate 24 is in the shape of a leak hole.

[0032] Through the design of the second extrusion piece 26, when the sleeve 9 moves, the filter plate 27 can be unblocked through the second extrusion piece 26. Since there are many impurities in the water, when the filter plate 27 is placed in the water for a long time, the impurities in the water may cause the filter plate 27 to be blocked, and the impurities usually move at the same time as the water flows. Therefore, by using the flow of water to push the sleeve 9 to move, the filter plate 27 can be unblocked when the impurities flow.

[0033] like Figure 5 As shown, the slider 21 is slidably matched with the second notch 20 , and the fixed shaft 22 passes through the slider 21 and is sleeved with the slider 21 .

[0034] Through the cooperation between the fixed shaft 22 and the slider 21, since the slider 21 is in a fixed state on the inner side of the first movable frame 6, when the second movable frame 19 moves, the fixed shaft 22 will be driven to pass through the slider 21, and the bottom of the third spring 23 will be compressed through the second notch 20, so as to drive the second movable frame 19 to reset.

[0035] like Figure 5 As shown, the top end of the second movable frame 19 passes through the first movable frame 6 , and the third spring 23 is elastically supported between the slider 21 and the second notch 20 .

[0036] The design of the third spring 23 allows the second notch 20 to have good elastic reset performance. At this time, since the third spring 23 is in a compressed state, an elastic force is applied to the second notch 20 , thereby enabling the sleeve 9 to be reset through the second notch 20 .

[0037] like Figure 1-9 As shown, the following steps are included: S1. Set the water level detection area. Through the cooperation between the first movable frame 6 and the connecting frame 5, the first movable frame 6 can move up and down along the inside of the connecting frame 5. At the same time, through the buoyancy of the airbag 10, it can adapt to the height of the water level, so that the position of the choke tube 8 is always higher than the water level, to prevent foreign objects on the river surface from floating to the water level detection area; S2. Limit the fluctuation of the detection area. Through the buoyancy of the airbag 10, the choke tube 8 can be limited by the circular ring 11. At the same time, since the bottom of the sleeve 9 is conical, the flow rate of water entering the choke tube 8 and the sleeve 9 can be limited, so that the fluctuation of the external water flow is not easy to affect the detection area. At this time, the fluctuation of the external water flow will only cause the water surface inside the choke tube 8 to change up and down, and it is not easy to form waves; S3. Adapt to the water level height. When the water level drops, the buoyancy of the airbag 10 will increase, so that the first extrusion member 12 will rise higher and release the extrusion of the connecting member 16. Similarly, when the connecting member 16 is released from the extrusion, the restriction of the choke tube 8 will be released, so that the airbag 10 floats on the water surface, which can adapt to different water levels; S4. Anti-clogging treatment: through the cooperation between the sleeve 9 and the conical plate 24, when the sleeve 9 is affected by the ups and downs of the water flow, the water flow will drive the sleeve 9 to move along the inner wall of the flow-blocking tube 8. At the same time, through the cooperation between the connecting shaft 25 and the second extrusion member 26, when the sleeve 9 moves, the second extrusion member 26 will pass through the filter plate 27 to clear the filter plate 27, thereby preventing the scale in the water from clogging the filter plate 27.

[0038] Working principle: First, through the cooperation between the first movable frame 6 and the connecting frame 5, the first movable frame 6 can move up and down along the inside of the connecting frame 5, and at the same time, through the buoyancy of the airbag 10, it can adapt to the height of the water level, so that the position of the choke tube 8 is always higher than the water level, preventing foreign objects on the river surface from floating to the water level detection area; Then, the buoyancy of the airbag 10 and the gravity of the circular ring 11 will compress the first spring 13, so that the connecting member 16 and the first extrusion member 12 are squeezed, so that the rack 18 can be driven to move through the movable rod 15, and the first movable frame 6 can be limited by the cooperation between the rack 18 and the gear 7. Therefore, the choke tube 8 can be limited by the circular ring 11. At the same time, since the bottom of the sleeve 9 is conical, the flow rate of water entering the choke tube 8 and the sleeve 9 can be limited, so that the fluctuation of the external water flow is not easy to affect the detection area. At this time, the fluctuation of the external water flow will only cause the water surface inside the choke tube 8 to change in height up and down, and it is not easy to form waves. At the same time, when the water level drops, since the first movable frame 6 in S2 is in a limited position state, the buoyancy of the airbag 10 will be affected when the water level drops. At this time, the elastic force of the first spring 13 will drive the first extrusion member 12 to move downward and release the extrusion of the connecting member 16, so that the connecting member 16 can be reset by the elastic force of the second spring 17 and the rack 18 can be driven to separate from the gear 7 through the movable rod 15, thereby releasing the limit of the first movable frame 6, so that the first movable frame 6 moves downward along the inner side of the connecting frame 5 and drives the airbag 10 to float on the water surface again. When the water level rises, the water level will exceed the bottom surface of the airbag 10. At this time, the buoyancy of the airbag 10 will increase, so that the height of the first extrusion member 12 increases and the extrusion of the connecting member 16 is released. Similarly, when the extrusion of the connecting member 16 is released, the limit of the choke tube 8 will be released to allow the airbag 10 to float on the water surface, which can adapt to water levels of different heights. Finally, through the cooperation between the sleeve 9 and the conical plate 24, when the sleeve 9 is affected by the ups and downs of the water flow, the water flow will drive the sleeve 9 to move along the inner wall of the choke tube 8. At the same time, through the cooperation between the connecting shaft 25 and the second extrusion member 26, when the sleeve 9 moves, the second extrusion member 26 will pass through the filter plate 27 to clear the filter plate 27, thereby preventing the scale in the water from clogging the filter plate 27.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water level detection device for a hydraulic engineering project with an intelligent sensor, comprising a fixed bracket (1), on which an ultrasonic water level meter (2), an electrical box (3), a solar panel (4) and an intelligent sensor inside the fixed bracket (1) are arranged, characterized in that: Also includes: A flow-blocking structure, which is arranged on the fixed bracket (1) and is used to limit the fluctuations generated when detecting the water surface; The flow-blocking structure comprises a connecting frame (5), the connecting frame (5) being mounted on the outer surface of a fixed bracket (1), a first movable frame (6) being sleeved in the middle of the connecting frame (5), a gear (7) being mounted inside the connecting frame (5), a circular ring (11) being mounted at the bottom end of the first movable frame (6), a flow-blocking tube (8) being mounted in the middle of the circular ring (11), a sleeve (9) being sleeved at the bottom of the flow-blocking tube (8), an air bag (10) being sleeved on the outer surface of the flow-blocking tube (8), and the A first extrusion member (12) is installed on the top of the airbag (10), a first spring (13) is sleeved on the outer surface of the choke tube (8), a first notch (14) is provided inside the first movable frame (6), a movable rod (15) is sleeved inside the first notch (14), a connecting member (16) and a rack (18) are installed at both ends of the movable rod (15), a second spring (17) is sleeved on the outer surface of the movable rod (15), and a filter (27) is installed at the bottom of the sleeve (9).

2. A water level detection device for hydraulic engineering with an intelligent sensor according to claim 1, characterized in that: The first movable frame (6) is sleeved with a second movable frame (19), the second movable frame (19) is provided with a second notch (20) on its outer side, a fixed shaft (22) is installed inside the second notch (20), a sliding block (21) is installed on the inner side of the first movable frame (6), a third spring (23) is sleeved on the outer surface of the fixed shaft (22), a conical plate (24) is installed on the inner wall of the choke tube (8), a second extrusion member (26) is installed on the bottom of the conical plate (24) via a connecting shaft (25), and the choke tube (8) is located directly below the ultrasonic water level meter (2).

3. The water level detection device for hydraulic engineering with an intelligent sensor according to claim 1, characterized in that: The first extrusion member (12) is in a "P" shape, the top end of the first extrusion member (12) passes through the circular ring member (11) and is in extrusion contact with the connecting member (16), when the first extrusion member (12) presses the connecting member (16), the rack (18) can mesh with the gear (7), and the bottom of the sleeve (9) is conical.

4. The water level detection device for hydraulic engineering with an intelligent sensor according to claim 1, characterized in that: The first spring (13) is elastically supported between the airbag (10) and the circular ring (11); when the airbag (10) is subjected to the buoyancy of the water surface, the first spring (13) is compressed; when the bottom surface of the airbag (10) floats on the water surface, the top of the first extrusion member (12) is in an extrusion state with respect to the connecting member (16); when the bottom surface of the airbag (10) is lower than the water surface, the top of the first extrusion member (12) moves to the top of the connecting member (16) to release the extrusion of the connecting member (16).

5. The water level detection device for hydraulic engineering with intelligent sensor according to claim 1, characterized in that: The second spring (17) is elastically supported between the connecting member (16) and the first notch (14); when the second spring (17) presses the connecting member (16), the connecting member (16) can drive the rack (18) to separate from the gear (7) via the movable rod (15).

6. The water level detection device for hydraulic engineering with intelligent sensor according to claim 2, characterized in that: The second extruded member (26) is matched with the filter hole of the filter plate (27); when the sleeve (9) moves upward along the inner wall of the choke tube (8), the second extruded member (26) can pass through the filter plate (27); and the surface of the conical plate (24) is in the shape of a leak hole.

7. The water level detection device for hydraulic engineering with intelligent sensor according to claim 2, characterized in that: The sliding block (21) is slidably matched with the second notch (20), and the fixed shaft (22) passes through the sliding block (21) and is sleeved with the sliding block (21).

8. The water level detection device for hydraulic engineering with intelligent sensor according to claim 2, characterized in that: The top end of the second movable frame (19) passes through the first movable frame (6), and the third spring (23) is elastically supported between the slider (21) and the second notch (20).

9. A method for detecting water level in a hydraulic project applicable to the hydraulic project water level detection device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Setting a water level detection area, by cooperating between the first movable frame (6) and the connecting frame (5), the first movable frame (6) can move up and down along the inside of the connecting frame (5), and at the same time, through the buoyancy of the air bag (10), it can adapt to the height of the water level, so that the position of the choke tube (8) is always higher than the water level, so as to prevent foreign objects on the river surface from floating to the water level detection area; S2. Limiting the fluctuation of the detection area. The buoyancy of the airbag (10) can limit the position of the choke tube (8) through the circular ring (11). At the same time, since the bottom of the sleeve (9) is conical, the flow rate of water entering the choke tube (8) and the sleeve (9) can be limited, so that the fluctuation of the external water flow is not easy to affect the detection area. At this time, the fluctuation of the external water flow will only cause the water surface inside the choke tube (8) to change in height, and it is not easy to form waves; S3. Adapting to the water level height. When the water level drops, the buoyancy of the airbag (10) will increase, so that the first extrusion member (12) will rise higher and release the extrusion of the connecting member (16). Similarly, when the connecting member (16) is released from the extrusion, the restriction of the choke tube (8) will be released, so that the airbag (10) floats on the water surface, and can adapt to different water levels; S4. Anti-clogging treatment: through the cooperation between the sleeve (9) and the conical plate (24), when the sleeve (9) is subjected to the ups and downs of the water flow, the water flow will drive the sleeve (9) to move along the inner wall of the flow blocking tube (8); at the same time, through the cooperation between the connecting shaft (25) and the second extrusion member (26), when the sleeve (9) moves, the second extrusion member (26) will pass through the filter plate (27) to clear the filter plate (27), thereby preventing scale in the water from clogging the filter plate (27).

Images