A water conservancy project water level monitoring device and a use method thereof

Abstract

This invention discloses a water level monitoring device for hydraulic engineering and its usage method, relating to the field of water level monitoring technology. It includes a support assembly, a protective assembly, and an immersion-type water level gauge. The support assembly is equipped with a winding machine and a cable, the end of which is connected to the protective assembly. The protective assembly includes a protective cylinder with a first filter plate having a first filter hole at its opening, and a second filter plate having a second filter hole inside the protective cylinder. A second unblocking rod penetrating the first filter hole is provided on the second filter plate, and a first unblocking rod corresponding to the second filter hole is provided on the first filter plate. The immersion-type water level gauge is located behind the second filter plate. During cleaning, the winding machine winds up the cable, pulling the second filter plate closer to the first filter plate, causing the second and first unblocking rods to slide within the holes, automatically pushing away and clearing blockages. This invention can automatically unblock the filter holes, reduce sediment interference, ensure measurement accuracy, and significantly reduce manual maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of water level monitoring, and in particular to a water level monitoring device for water conservancy projects and its usage method. Background Technology

[0002] Water conservancy projects refer to projects built to eliminate water hazards and develop and utilize water resources. In carrying out water conservancy projects, it is usually necessary to monitor the water level of rivers, lakes, canals, etc. Water level is the most direct factor reflecting the water condition of a water body. Its changes are mainly caused by the increase or decrease of water volume. Water level monitoring is generally carried out by direct measurement with a measuring tape or by real-time measurement with electronic measuring instruments.

[0003] Submersible level gauges are convenient to use and offer high measurement accuracy. However, because the probe needs to be submerged in water, sediment in the river can easily clog the sensor's pressure-sensing holes, causing the equipment to become sluggish or even completely malfunction. While existing equipment includes protective devices (such as protective pipes) around the submersible level gauge with multiple small holes to filter sediment and reduce water flow impact, these holes tend to become clogged after a period of time. This makes it difficult for the pressure of rising and falling river water to be transmitted to the submersible level gauge, affecting its measurement accuracy. Therefore, after a certain period of use, the submersible level gauge needs to be removed from the water and cleaned, increasing maintenance costs. Summary of the Invention

[0004] This invention provides a water level monitoring device for hydraulic engineering and its usage method, aiming to solve the problem that existing submersible water level gauges are easily clogged by silt in rivers, leading to slow response or failure. Although using protective equipment to filter silt and reduce the impact of water flow can improve the measurement accuracy of submersible water level gauges, the small holes on the protective equipment are easily blocked by silt, making it difficult for the pressure of rising and falling river water to be transmitted to the submersible water level gauge, which affects the measurement accuracy. Therefore, after a certain period of use, the submersible water level gauge needs to be removed from the bottom of the water and cleaned, increasing maintenance costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, embodiments of the present invention provide a water level monitoring device for a water conservancy project, comprising: a support component, a protective component, and an immersion water level gauge, wherein a winding machine is provided on the support component, and a cable is wound on the winding machine; The protective component is disposed at the end of the cable; The protective assembly includes a protective cylinder; one end of the protective cylinder is closed axially, and the other end is provided with an opening; a first filter plate is provided at the opening, and the first filter plate is provided with a plurality of first filter holes; a second filter plate is provided inside the protective cylinder, and the second filter plate is provided with second filter holes. The second filter plate has a plurality of second unblocking rods corresponding to the first filter holes on its end face facing the first filter plate. The plurality of second unblocking rods are inserted through the plurality of first filter holes in a corresponding manner. The end of the second unblocking rod near the second filter plate has a second section with the same diameter as the first filter hole. The diameter of the second unblocking rod gradually decreases from the second section with the same diameter towards the end away from the second section with the same diameter. The first filter plate has a plurality of first unblocking rods corresponding to the second filter holes on its end face facing the second filter plate. The positions of the plurality of first unblocking rods correspond to the positions of the plurality of second filter holes. The end of the first unblocking rod near the first filter plate has a first section of the same diameter as the second filter hole. The diameter of the first unblocking rod gradually increases from the first section of the same diameter toward the end away from the first section of the same diameter. The submersible water level gauge is installed in the cavity formed by the second filter plate and the protective cylinder. The cable pulls the second filter plate closer to the first filter plate; the second unclogging rod slides inside the first filter hole to clean the first filter hole; the first unclogging rod is inserted into the second filter hole to clean the second filter hole.

[0006] In one embodiment, the length of the second segment of the same diameter is greater than or equal to the length of the first drain rod; the diameter of the second filter hole is smaller than the diameter of the first filter hole.

[0007] In one embodiment, a first spring abuts between the first filter plate and the second filter plate.

[0008] In one embodiment, a third filter plate is disposed on the side of the second filter plate away from the first filter plate, and the third filter plate has third filter holes evenly distributed thereon.

[0009] In one embodiment, the diameter of the third filter hole is smaller than the diameter of the second filter hole.

[0010] In one embodiment, a fixing platform is provided on the side of the third filter plate away from the second filter plate, and the fixing platform is fixedly connected to the inner wall of the protective cylinder; A second spring is connected between the third filter plate and the second filter plate; A third spring connects the fixed platform and the third filter plate.

[0011] In one embodiment, a first through hole is provided through the side wall of the protective cylinder, and an installation rod is provided in the first through hole for sealing purposes; The mounting rod has a mounting hole extending axially, and the submersible water level gauge passes through the mounting hole and is installed inside the protective cylinder.

[0012] In one embodiment, a mounting ring is fixedly disposed on the end face of the first filter plate near the second filter plate, and the mounting ring is disposed along the edge of the second filter plate; The mounting ring is threadedly connected to the protective cylinder.

[0013] In one embodiment, the bottom of the protective cylinder is provided with several counterweights.

[0014] Secondly, embodiments of the present invention also provide a method for using a water level monitoring device for water conservancy projects, which is executed by the aforementioned water level monitoring device for water conservancy projects, and further includes the following steps: The protective cylinder is filled with water, and the cable pulls the second filter plate to lift the protective assembly. Under the gravity of the protective cylinder, the second filter plate and the first filter plate move closer to each other, and the second unblocking rod blocks the first filter hole, and the first unblocking rod blocks the second filter hole. The winding machine lengthens the cable, causing the protective components to gradually sink to the bottom of the river.

[0015] The beneficial effects of this invention compared with the prior art are as follows: In this application, by setting a first filter plate and a second filter plate, the first filter plate is provided with a first filter hole and the second filter plate is provided with a second filter hole, which can realize two-stage filtration of mud and sand in river water, thereby reducing interference with the submersible water level gauge and improving the accuracy of the submersible water level gauge.

[0016] When the submersible water level gauge needs to be cleaned of the silt in the first and second filter holes after a period of use, the cable is wound up by a winding machine to straighten it. After the cable is straightened, it continues to be pulled upwards for a distance. At this time, under its own weight, the first and second filter plates of the protective cylinder will move closer to each other, and the second cleaning rod will slide inside the first filter hole. As the first and second filter plates move closer, the diameter of the second cleaning rod inside the first filter hole gradually increases. During this process, the second cleaning rod can not only gradually clean the impurities in the first filter hole, but also push the impurities in the first filter hole outwards due to the outward movement of the second cleaning rod, reducing the amount of impurities entering the protective cylinder.

[0017] Similarly, as the first and second filter plates approach each other, the first unblocking rod will also be inserted into the second filter hole to unblock the impurities inside the second filter hole.

[0018] The cable is then extended using a winding machine, causing the protective cylinder to sink back to the riverbed. Once the protective cylinder is submerged, the second filter plate sinks under its own weight, separating from the first filter plate and allowing the first and second filter holes to be cleared. After the first and second filter holes are cleared, the pressure of the rising and falling river water is ensured to be transmitted to the submersible water level gauge, preventing the accuracy of the submersible water level gauge from being affected by the blockage of the first and second filter holes.

[0019] The winding machine can be controlled by a controller, which will automatically pull the cable after a certain period of time to achieve periodic cleaning of the first and second filter holes.

[0020] Therefore, this application can clear the first and second filter holes by pulling the cable with a winding machine, ensuring the measurement accuracy of the submersible water level gauge, extending the cleaning cycle of the submersible water level gauge, and effectively reducing the maintenance cost of the entire equipment.

[0021] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are described in detail below. Attached Figure Description

[0022] Figure 1 A three-dimensional structural diagram of the overall structure of a water level monitoring device for a water conservancy project provided in an embodiment of the present invention; Figure 2 A three-dimensional structural diagram of a water level monitoring device for a water conservancy project provided in an embodiment of the present invention; Figure 3 A cross-sectional view of a protective component of a water level monitoring device for a water conservancy project provided in an embodiment of the present invention; Figure 4 for Figure 3 A magnified view of a portion of the image; Figure 5 A three-dimensional structural diagram of the first filter plate of a water level monitoring device for a water conservancy project provided in an embodiment of the present invention; Figure 6 A three-dimensional structural diagram of the second filter plate of a water level monitoring device for a water conservancy project provided in an embodiment of the present invention; Figure 7 This is a three-dimensional structural view of the second filter plate of a water level monitoring device for a water conservancy project provided in an embodiment of the present invention; Figure 8This is a three-dimensional structural diagram of the protective cylinder of a water level monitoring device for a water conservancy project, provided as an embodiment of the present invention.

[0023] Figure label: 1. Support assembly; 11. Support base; 12. Support column; 13. Crossbar; 2. Protective components, 21. First filter plate, 211. First filter hole, 212. First unblocking rod, 2121. First section of the same diameter, 22. Second filter plate, 221. Second filter hole, 222. Second unblocking rod, 2221. Second section of the same diameter, 23. Third filter plate, 231. Third filter hole, 24. Protective cylinder, 241. Opening, 242. Abutment platform, 243. Mounting ring, 244. First through hole, 245. Fixing platform, 25. First spring, 26. Second spring, 27. Third spring; 3. Submersible water level gauge; 31. Cable; 4. Cable; 5. Install the rod; 6. Counterweight. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0026] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0027] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0028] Please see Figure 1-8This invention provides a water level monitoring device for a water conservancy project, comprising: a support component 1, a protective component 2, and an immersion water level gauge 3. A winding machine is provided on the support component 1, and a cable 4 is wound on the winding machine. The protective component 2 is disposed at the end of the cable 4; The protective component 2 includes a protective cylinder 24; one end of the protective cylinder 24 is closed in the axial direction, and the other end is provided with an opening 241; a first filter plate 21 is provided at the opening 241, and a plurality of first filter holes 211 are provided on the first filter plate 21; a second filter plate 22 is provided inside the protective cylinder 24, and a second filter hole 221 is provided on the second filter plate 22. The second filter plate 22 has a plurality of second unblocking rods 222 corresponding to the first filter holes 211 on its end face facing the first filter plate 21. The plurality of second unblocking rods 222 are disposed through the plurality of first filter holes 211 in a corresponding manner. The end of the second unblocking rod 222 near the second filter plate 22 has a second diameter section 2221 with the same diameter as the first filter hole 211. The diameter of the second unblocking rod 222 gradually decreases from the second diameter section 2221 toward the end away from the second diameter section 2221. The first filter plate 21 has a plurality of first unblocking rods 212 corresponding to the second filter holes 221 on its end face facing the second filter plate 22. The positions of the plurality of first unblocking rods 212 and the plurality of second filter holes 221 are corresponding. The end of the first unblocking rod 212 near the first filter plate 21 has a first section 2121 with the same diameter as the second filter hole 221. The diameter of the first unblocking rod 212 gradually increases from the first section 2121 toward the end away from the first section 2121. The submersible water level gauge 3 is installed in the cavity formed by the second filter plate 22 and the protective cylinder 24. The cable 4 pulls the second filter plate 22 toward the first filter plate 21; the second unclogging rod 222 slides inside the first filter hole 211 to clean the first filter hole 211; the first unclogging rod 212 is inserted into the second filter hole 221 to clean the second filter hole 221.

[0029] In this embodiment, as Figure 3 and Figure 4 As shown, by setting a first filter plate 21 and a second filter plate 22, the first filter plate 21 is provided with a first filter hole 211 and the second filter plate 22 is provided with a second filter hole 221, which can realize two-stage filtration of mud and sand in river water, thereby reducing interference to the submersible water level gauge 3 and improving the accuracy of the submersible water level gauge 3.

[0030] When the submersible water level gauge 3 needs to be cleaned of the mud and sand in the first filter hole 211 and the second filter hole 221 after a period of use, the cable 4 is wound up by a winding machine to straighten the cable 4. After the cable 4 is straightened, it continues to be pulled upwards for a distance. At this time, under its own weight, the first filter plate 21 and the second filter plate 22 of the protective cylinder 24 will move closer to each other. The second unblocking rod 222 will slide inside the first filter hole 211. As the first filter plate 21 and the second filter plate 22 move closer, the diameter of the second unblocking rod 222 inside the first filter hole 211 gradually increases. During this process, the second unblocking rod 222 can not only gradually clean the impurities in the first filter hole 211, but also push the impurities in the first filter hole 211 outwards due to the outward movement of the second unblocking rod 222, reducing the amount of impurities entering the protective cylinder 24.

[0031] Similarly, as the first filter plate 21 and the second filter plate 22 approach each other, the first unblocking rod 212 will also be inserted into the second filter hole 221 to unblock the impurities in the second filter hole 221.

[0032] Then, the cable 4 is extended by the winding machine, so that the protective cylinder 24 sinks back to the bottom of the river. After the protective cylinder 24 sinks to the bottom of the river, the second filter plate 22 sinks under its own gravity. The second filter plate 22 and the first filter plate 21 separate from each other, so that the first filter hole 211 and the second filter hole 221 can be cleared. After the first filter hole 211 and the second filter hole 221 are cleared, it is ensured that the pressure of the rise and fall of the river water is transmitted to the submersible water level gauge 3, and the accuracy of the test of the submersible water level gauge 3 is not affected by the blockage of the first filter hole 211 and the second filter hole 221.

[0033] The winding machine can be controlled by a controller, which will automatically pull the cable 4 after a certain period of time to achieve periodic cleaning of the first filter hole 211 and the second filter hole 221.

[0034] Therefore, as can be seen from the above process, by pulling the cable 4 with a winding machine, the first filter hole 211 and the second filter hole 221 can be cleared, ensuring the measurement accuracy of the submersible water level gauge 3, extending the cleaning cycle of the submersible water level gauge 3, and effectively reducing the maintenance cost of the entire equipment.

[0035] In this embodiment, as Figure 1 As shown, the support assembly 1 includes a support base 11, a support column 12 mounted on the support base 11, and a crossbar 13 mounted on the top of the support column 12 for mounting the winding machine. The support column 12 houses a controller for controlling the winding machine and for collecting data from the submersible water level gauge 3.

[0036] The end of the cable 4 is fixedly connected to the second unblocking rod 222, and the cable 4 pulls the second filter plate 22 through the second unblocking rod 222.

[0037] In this embodiment, an abutment platform 242 is provided on the inner wall of the protective cylinder 24, and the side of the second filter plate 22 away from the first filter plate 21 abuts against the abutment platform 242. Additionally, the second dredging rod 222 is inserted entirely into the first filter hole 211. When the second filter plate 22 abuts against the abutment platform 242, a gap is formed between the second dredging rod 222 and the first filter hole 211, facilitating the flow of river water. Simultaneously, the small gap between the second dredging rod 222 and the first filter hole 211 also helps to filter silt and sand from the river water.

[0038] The contact platform 242 has a limiting function, which supports and restricts the second filter plate 22 axially.

[0039] In addition, a rubber material is provided around the second filter plate 22, which can improve the sealing performance between the second filter plate 22 and the inner wall of the protective cylinder 24.

[0040] In one embodiment, the outer periphery of the first equal-diameter section 2121 and the second equal-diameter section 2221 is provided with rubber material to improve the sealing performance after mating.

[0041] In a further embodiment, such as Figure 3 As shown, a mounting ring 243 is fixedly provided on the surface of the first filter plate 21 near the second filter plate 22, and the mounting ring 243 is provided along the edge of the second filter plate 22; The mounting ring 243 is threadedly connected to the inner wall of the protective cylinder 24.

[0042] In this embodiment, the first filter plate 21 is fixedly connected to the protective cylinder 24 via the mounting ring 243.

[0043] In a further embodiment, the length of the second equal-diameter segment 2221 is greater than or equal to the length of the first unclogging rod 212, and the diameter of the second filter hole 221 is smaller than the diameter of the first filter hole 211.

[0044] In this embodiment, since the diameter of the second filter hole 221 is smaller than the diameter of the first filter hole 211, in order to ensure that the first unblocking rod 212 can be accurately inserted into the second filter hole 221, the length of the second equal-diameter section 2221 is set to be greater than the length of the first unblocking rod 212. Thus, when the second equal-diameter section 2221 slides into the first filter hole 211, the second equal-diameter section 2221 and the first filter hole 211 are completely fitted together, thereby ensuring that multiple first unblocking rods 212 are accurately inserted into the second filter hole 221, thereby unblocking the second filter hole 221.

[0045] In a further embodiment, such as Figure 3 As shown, a first spring 25 abuts between the first filter plate 21 and the second filter plate 22.

[0046] In this application, several first springs 25 are provided, and each first spring 25 is sleeved on the second unblocking rod 222. The first springs 25 can push the second filter plate 22 to reset.

[0047] In one embodiment, a first through hole 244 is provided through the side wall of the protective cylinder 24, and an installation rod 5 is provided in the first through hole 244 for sealing purposes; The mounting rod 5 has a mounting hole extending axially, and the submersible water level gauge 3 passes through the mounting hole and is installed inside the protective cylinder 24.

[0048] In this embodiment, the submersible water level gauge 3 is fixedly installed inside the protective cylinder 24 by the mounting rod 5. The cable 31 connected to the submersible water level gauge 3 is threaded through the mounting hole. The cable 31 can be fixed to the cable 4 by cable ties and rises and falls synchronously with the cable 4, but the cable 31 does not bear any additional weight other than its own weight.

[0049] In a further embodiment, such as Figure 2 and Figure 3 As shown, the bottom of the protective cylinder 24 is provided with several counterweights 6.

[0050] A threaded rod is provided at the bottom of the protective cylinder 24, and several counterweights 6 are fixedly installed at the bottom of the protective cylinder 24 through the threaded rod. The number of counterweights 6 is set according to the actual situation.

[0051] In another embodiment, a third filter plate 23 is provided on the side of the second filter plate 22 away from the first filter plate 21, and the third filter plate 23 has third filter holes 231 evenly distributed on it.

[0052] The diameter of the third filter hole 231 is smaller than the diameter of the second filter hole 221.

[0053] In this embodiment, the diameter of the third filter hole 231 is smaller than the diameter of the second filter hole 221, which can further filter river mud and sand.

[0054] Additionally, in further embodiments, such as Figure 8 As shown, a fixing platform 245 is provided on the side of the third filter plate 23 away from the second filter plate 22, and the fixing platform 245 is fixedly connected to the inner wall of the protective cylinder 24. A second spring 26 is connected between the third filter plate 23 and the second filter plate 22; A third spring 27 is connected between the fixed platform 245 and the third filter plate 23.

[0055] In this embodiment, the third filter plate 23 is abutted between the fixed platform 245 and the second filter plate 22 by the second spring 26 and the third spring 27. The two ends of the second spring 26 are fixedly connected to the second filter plate 22 and the third filter plate 23, respectively, and the two ends of the third spring 27 are fixedly connected to the third filter plate 23 and the fixed platform 245, respectively. Thus, when the second filter plate 22 moves towards the first filter plate 21 under the action of the cable 4, the second filter plate 22 can pull the third filter plate 23 to move through the second spring 26, which can also play a certain role in cleaning impurities on the third filter plate 23.

[0056] In another embodiment, the present invention also provides a method for using a water level monitoring device for a water conservancy project, which is executed by the aforementioned water level monitoring device for a water conservancy project, and further includes the following steps: The protective cylinder 24 is filled with water, and the cable 4 pulls the second filter plate 22 to lift the protective component 2. Under the gravity of the protective cylinder 24, the second filter plate 22 and the first filter plate 21 move closer to each other, and the second unblocking rod 222 blocks the first filter hole 211. The first unblocking rod 212 blocks the second filter hole 221. The winding machine lengthens the cable 4, causing the protective component 2 to gradually sink to the bottom of the river.

[0057] When the protective cylinder 24 sinks to the bottom of the river without being filled with water, the second filter plate 22 and the first filter plate 21 will quickly separate under the pressure of the river water, causing the river water to quickly flow back into the protective cylinder 24. In addition, due to the high content of silt at the bottom of the river, a large amount of silt will enter the protective cylinder 24.

[0058] Therefore, in this embodiment, by using the above method, the protective cylinder 24 is filled with water when it sinks to the bottom of the river. Thus, when the protective cylinder 24 sinks to the bottom of the river, the first filter plate 21 and the second filter plate 22 separate under the action of the first spring 25. This prevents the river water from rushing back in because there is no water in the protective cylinder 24. This reduces the amount of mud and sand that initially enters the protective cylinder 24, thereby increasing the service life of the submersible water level gauge 3 and extending the cycle of the next cleaning.

[0059] This application uses a first filter plate 21 (with a first filter hole 211) and a second filter plate 22 (with a second filter hole 221) to perform secondary filtration of the river water entering the protective cylinder 24, intercepting sediment and protecting the submersible water level gauge 3.

[0060] When cleaning is required, the winding machine rewinds the cable 4, pulling the second filter plate 22 closer to the first filter plate 21.

[0061] The second unblocking rod 222, fixed on the second filter plate 22, slides within the first filter hole 211. As the diameter of the second unblocking rod 222 gradually changes, it pushes and removes impurities from the first filter hole 211 during the sliding process.

[0062] At the same time, the first unblocking rod 212 fixed on the first filter plate 21 is inserted into the second filter hole 221 to unblock the impurities in the hole.

[0063] After the winding machine releases the cable 4, the protective cylinder 24 sinks to the bottom of the river. Under the action of gravity or the first spring 25, the first filter plate 21 and the second filter plate 22 separate, and the first filter hole 211 and the second filter hole 221 are unobstructed, ensuring normal water pressure transmission.

[0064] Before sinking, fill the protective cylinder 24 with water to prevent the river water from rushing back and bringing in a large amount of silt when the protective cylinder 24 sinks to the bottom due to the pressure difference.

[0065] Compared with the prior art, this application has the following advantages: (1) Improve measurement accuracy: The interference of river mud and sand on the submersible water level gauge 3 is effectively reduced through two-stage filtration, ensuring the accuracy of data acquisition.

[0066] (2) Reduced maintenance costs: The first filter hole 211 and the second filter hole 221 can be automatically cleaned by the cable 4 winch, eliminating the need for frequent manual cleaning or disassembly of the equipment, which significantly extends the cleaning cycle and maintenance interval.

[0067] (3) High degree of automation: The winding machine can be operated automatically by the controller at regular intervals to regularly unclog the first filter hole 211 and the second filter hole 221, reducing manual intervention.

[0068] (4) Preventing secondary blockage: The second unblocking rod 222 adopts a variable diameter design, which can push impurities outward during cleaning, preventing impurities from entering the protective cylinder 24 and enhancing the cleaning effect.

[0069] (5) Extend equipment life: By reducing the entry of silt, the submersible water level gauge 3 is protected and its service life is extended.

[0070] (6) Good installation adaptability: The sinking stability of the protective cylinder 24 can be adjusted by the counterweight 6; it can adapt to different water quality environments through multi-stage filtration.

[0071] (7) Strong start-up protection: The water-filled sinking method avoids the large amount of mud and sand that will rush in due to sudden changes in water pressure during the initial installation, thus improving the cleanliness and stability of the initial operation.

[0072] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A water level monitoring device for water conservancy projects, characterized in that, Includes: a support assembly, a protective assembly, and an immersion water level gauge, wherein a winding machine is mounted on the support assembly, and a cable is wound on the winding machine; The protective component is disposed at the end of the cable; The protective assembly includes a protective cylinder; one end of the protective cylinder is closed axially, and the other end is provided with an opening; a first filter plate is provided at the opening, and the first filter plate is provided with a plurality of first filter holes; a second filter plate is provided inside the protective cylinder, and the second filter plate is provided with second filter holes. The second filter plate has a plurality of second unblocking rods corresponding to the first filter holes on its end face facing the first filter plate. The plurality of second unblocking rods are inserted through the plurality of first filter holes in a corresponding manner. The end of the second unblocking rod near the second filter plate has a second section with the same diameter as the first filter hole. The diameter of the second unblocking rod gradually decreases from the second section with the same diameter towards the end away from the second section with the same diameter. The first filter plate has a plurality of first unblocking rods corresponding to the second filter holes on its end face facing the second filter plate. The positions of the plurality of first unblocking rods correspond to the positions of the plurality of second filter holes. The end of the first unblocking rod near the first filter plate has a first section of the same diameter as the second filter hole. The diameter of the first unblocking rod gradually increases from the first section of the same diameter toward the end away from the first section of the same diameter. The submersible water level gauge is installed in the cavity formed by the second filter plate and the protective cylinder; The cable pulls the second filter plate closer to the first filter plate; the second unclogging rod slides inside the first filter hole to clean the first filter hole; the first unclogging rod is inserted into the second filter hole to clean the second filter hole.

2. The water level monitoring device for water conservancy projects according to claim 1, characterized in that, The length of the second section of the same diameter is greater than or equal to the length of the first unclogging rod; the diameter of the second filter hole is smaller than the diameter of the first filter hole.

3. The water level monitoring device for water conservancy projects according to claim 2, characterized in that, A first spring is abutting between the first filter plate and the second filter plate.

4. The water level monitoring device for water conservancy projects according to any one of claims 1 to 3, characterized in that, A third filter plate is provided on the side of the second filter plate away from the first filter plate, and the third filter plate has third filter holes evenly distributed on it.

5. The water level monitoring device for water conservancy projects according to claim 4, characterized in that, The diameter of the third filter hole is smaller than the diameter of the second filter hole.

6. The water level monitoring device for water conservancy projects according to claim 4, characterized in that, A fixing platform is provided on the side of the third filter plate away from the second filter plate, and the fixing platform is fixedly connected to the inner wall of the protective cylinder. A second spring is connected between the third filter plate and the second filter plate; A third spring connects the fixed platform and the third filter plate.

7. The water level monitoring device for water conservancy projects according to claim 1, characterized in that, The protective cylinder has a first through hole in its side wall, and an installation rod is sealed in the first through hole. The mounting rod has a mounting hole extending axially, and the submersible water level gauge passes through the mounting hole and is installed inside the protective cylinder.

8. The water level monitoring device for water conservancy projects according to claim 1, characterized in that, A mounting ring is fixedly provided on the end face of the first filter plate near the second filter plate, and the mounting ring is provided along the edge of the second filter plate; The mounting ring is threadedly connected to the protective cylinder.

9. The water level monitoring device for water conservancy projects according to claim 1, characterized in that, The bottom of the protective cylinder is equipped with several counterweights.

10. A method for using a water level monitoring device for a water conservancy project, characterized in that, Performed by the water level monitoring device for water conservancy projects according to any one of claims 1 to 9, the method further includes the following steps: The protective cylinder is filled with water, and the cable pulls the second filter plate to lift the protective assembly. Under the gravity of the protective cylinder, the second filter plate and the first filter plate move closer to each other, and the second unblocking rod blocks the first filter hole, and the first unblocking rod blocks the second filter hole. The winding machine lengthens the cable, causing the protective components to gradually sink to the bottom of the river.

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