Water conservancy monitoring equipment self-adaptive to water level change and monitoring method thereof

Abstract

The invention discloses water conservancy monitoring equipment self-adaptive to water level changes and a monitoring method thereof, and belongs to the technical field of water conservancy monitoring. The water conservancy monitoring equipment comprises an external connection cylinder, an observation cylinder a is arranged in the external connection cylinder, a built-in block is fixed to the bottom end of the observation cylinder a, an expansion clamping assembly is arranged on the side face of the built-in block, and an observation cylinder b is inserted into the observation cylinder a; an observation cylinder c is inserted into the observation cylinder b, dial gauges are arranged on the outer side surfaces of the observation cylinder a, the observation cylinder b and the observation cylinder c, floating pushing assemblies are arranged at the bottoms of the observation cylinder b and the observation cylinder c, and reinforcing assemblies are arranged on the convex plates; the floating pushing assembly pushes the observation cylinder b and the observation cylinder c to sequentially jack up and extend out, so that the observation cylinder a is extended, the water level can be continuously observed according to the dial gauges on the observation cylinder b and the observation cylinder c, the use is convenient, the observation cylinder a can be automatically extended according to the change of the water level to measure the water level, and the use convenience is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy monitoring, and in particular relates to water conservancy monitoring equipment and a monitoring method thereof that are adaptive to water level changes. Background Art

[0002] Water conservancy monitoring devices are mainly used to monitor the water conservancy operations of rivers, lakes, and reservoirs, and to promptly reflect the hydrological characteristics of each water area so that relevant departments can make arrangements to prevent the occurrence of flood disasters. Hydrological and water conservancy monitoring devices detect the temperature, humidity and other information of water conservancy through various detectors for monitoring. The planning, design, construction and management of water conservancy projects require water level data. The construction of bridges, ports, waterways, water supply and drainage projects also requires water level data. In flood control and drought relief, water level data is even more important, as it is the basis for hydrological forecasts and hydrological intelligence. Water level data is important basic data in the study of the relationship between water level and flow and in the analysis of river sediment, water conditions, etc.

[0003] In water conservancy monitoring, water level measuring tubes are usually used to measure water levels and read the height values ​​of water levels. However, the fixing effect of existing water level measuring tubes is poor. After being impacted by water flow, the water level measuring tubes are prone to tilt under the force of the water flow, resulting in errors in water level monitoring readings, making the water level measuring device not practical enough. At the same time, for applications with different water depths, water level measuring tubes of different measuring lengths need to be replaced, which is very inconvenient.

[0004] Therefore, there is a need for a hydraulic monitoring device and a monitoring method that are adaptive to water level changes to solve the problem that after being impacted by the water flow, the water level measuring tube is easily tilted under the action of the water flow, resulting in errors in the water level monitoring readings, making the water level measuring device less practical. At the same time, for applications with different water depths, it is necessary to replace water level measuring tubes of different measuring lengths, which is very inconvenient. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic monitoring device and a monitoring method thereof which are adaptive to water level changes, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water conservancy monitoring equipment that is adaptive to water level changes, comprising an external tube, an observation tube a is arranged inside the external tube, a built-in block is fixed at the bottom end of the observation tube a, an expansion clamp assembly is arranged on the side of the built-in block, an observation tube b is inserted into the observation tube a, an observation tube c is inserted into the observation tube b, scales are arranged on the outer surfaces of the observation tubes a, b and c, float thrust assemblies are arranged at the bottom of the observation tubes b and c, a convex plate is fixed at the bottom end of the external tube, two convex plates are arranged and the two convex plates are symmetrically distributed, and a reinforcement assembly is arranged on the convex plate.

[0007] It should be noted in the scheme that the float-thrust assembly includes a cavity b arranged at the bottom of the observation tube b, a lightweight float a is arranged in the cavity b, and a water inlet a connected to the cavity b is opened at the bottom of the observation tube a.

[0008] It is further worth noting that a cavity a is provided at the bottom of the observation tube c, a lightweight float b is provided inside the cavity a, a water inlet b connected to the cavity a is provided at the bottom of the observation tube b, and a lightweight float b is provided inside the cavity a.

[0009] It should be further explained that the expansion clamp assembly includes an arc-shaped rubber block fixed on the side of the built-in block, a liquid cavity is opened inside the arc-shaped rubber block, a fluid cylinder connected to the liquid cavity is fixed on the side wall of the external connecting tube, a nut sleeve is fixed in one end of the fluid cylinder away from the arc-shaped rubber block, a threaded rod is connected to the inner thread of the nut sleeve, and a piston plate that fits tightly with the inner wall of the fluid cylinder is fixed on one end of the threaded rod located inside the fluid cylinder.

[0010] As a preferred embodiment, a terminal plate a is fixed to one end of the threaded rod located outside the fluid cylinder, and a rubber sleeve is fitted on the surface of the terminal plate a.

[0011] As a preferred implementation, rubber convex points are arranged on the outer surface of the arc-shaped rubber block, and a plurality of rubber convex points are arranged and the plurality of rubber convex points are distributed at equal intervals.

[0012] As a preferred embodiment, a through hole is formed through the side surface of the built-in block, and a plurality of the through holes are provided and distributed in a ring shape.

[0013] As a preferred embodiment, the reinforcement component includes a threaded rod threadably connected to the convex plate, an end plate b is fixed to the top end of the threaded rod, and a tip is provided on the bottom end of the threaded rod.

[0014] As a preferred embodiment, a handle bar is fixed on the side of the end plate b, a rubber sleeve is fitted on the surface of the handle bar, and arc grooves are provided at the bottom ends of the observation tubes b and c.

[0015] A method for monitoring water level changes adaptively comprises the following steps:

[0016] S1. Insert the external tube vertically into the bottom of the water, rotate the threaded rod so that the threaded rod is screwed down and inserted into the soil at the bottom of the water, and the threaded rods are screwed down and inserted into the deeper soil through the symmetrically arranged threads, so as to firmly fix the external tube and prevent the water flow from impacting the external tube and causing the external tube to be skewed;

[0017] S2, inserting the observation tube a into the external tube, rotating the threaded rod, the threaded rod drives the piston plate to move in the liquid cylinder, so that the liquid in the liquid cylinder is squeezed into the arc-shaped rubber block through the piston plate, thereby filling the arc-shaped rubber block with liquid to make the arc-shaped rubber block expand, so that the outer wall of the arc-shaped rubber block is tightly pressed onto the inner wall of the external tube, thereby fixing the observation tube a into the external tube, and completing the installation of the observation tube a inside the external tube;

[0018] S3. When the water level is low, the water level is measured by the scale on the observation tube a. When the water level rises, water enters the cavity b and the cavity a in turn through the water inlet a and the light float b, so that the light float a and the light float b are pushed up in turn by the buoyancy of the water, so that the observation tube b and the observation tube c are pushed up and extended in turn by the buoyancy, so that the observation tube a can be extended according to the change of the water level, so that the water level can be continuously observed according to the scales on the observation tube b and the observation tube c;

[0019] S4. When not in use, the air pressure inside the arc-shaped rubber block can be released by rotating the threaded rod in the opposite direction, so that the observation tube a can be easily removed from the inside of the external tube, reducing the overall volume and facilitating carrying and transfer.

[0020] Compared with the prior art, the water conservancy monitoring device and monitoring method for adaptive water level changes provided by the present invention have at least the following beneficial effects:

[0021] (1) By inserting the symmetrically arranged reinforcement components into deeper soil, the external tube is firmly fixed to prevent the water flow from impacting the external tube and causing the external tube to tilt, resulting in inaccurate detection, thereby further reinforcing the fixation of the external tube in the soil.

[0022] (2) Insert the observation tube a into the external tube, fill the expansion clamp assembly with liquid to cause expansion inside the expansion clamp assembly, so that the outer surface of the expansion clamp assembly is tightly pressed against the inner wall of the external tube, thereby fixing the observation tube a into the external tube, and completing the installation of the observation tube a inside the external tube. The installation is convenient and the assembly and disassembly efficiency is high. When not in use, the liquid inside the expansion clamp assembly is released to release the air pressure inside the expansion clamp assembly, and the observation tube a can be easily removed from the external tube, thereby reducing the overall volume, facilitating carrying and transfer, and facilitating use.

[0023] (3) When the water level is low, the water level is measured by the scale on the observation tube a. When the water level rises, the buoyancy of the float-thrust assembly pushes the observation tubes b and c to rise and extend in turn, thereby extending the observation tube a. The water level can be continuously observed according to the scales on the observation tubes b and c. It is easy to use and can automatically extend the observation tube a to measure the water level according to the change of the water level, eliminating the operation of replacing the observation tube a, effectively improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall front view structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0027] Figure 4 It is a schematic cross-sectional structure diagram of the floating thrust assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the local structure of the expansion clamp assembly of the present invention;

[0029] Figure 6 It is a schematic diagram of the local structure of the through hole of the present invention;

[0030] Figure 7 It is a schematic diagram of the local structure of the reinforcement component of the present invention;

[0031] Figure 8 It is a schematic diagram of the local structure of the arc-shaped groove of the present invention.

[0032] In the figure: 1. Float-thrust assembly; 101. Lightweight float a; 102. Lightweight float b; 103. Water inlet a; 104. Water inlet b; 105. Cavity a; 106. Cavity b; 107. Arc-shaped groove; 2. Expansion clamp assembly; 201. Arc-shaped rubber block; 202. Liquid cavity; 203. Liquid cylinder; 204. Threaded rod; 205. End plate a; 206. Piston plate; 207. Nut sleeve; 208. Rubber bump; 3. Reinforcement assembly; 301. Threaded plug rod; 302. End plate b; 303. Tip; 304. Handle rod; 305. Rubber sleeve; 4. External tube; 5. Observation tube a; 6. Observation tube b; 7. Observation tube c; 8. Convex plate; 9. Built-in block; 10. Through hole; 11. Scale. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the embodiments.

[0034] See also Figure 1-8The present invention provides a water conservancy monitoring device that is adaptive to water level changes, including an external tube 4, an observation tube a5 is arranged inside the external tube 4, a built-in block 9 is fixed to the bottom end of the observation tube a5, an expansion clamp assembly 2 is arranged on the side of the built-in block 9, an observation tube b6 is inserted inside the observation tube a5, an observation tube c7 is inserted inside the observation tube b6, a scale 11 is arranged on the outer surfaces of the observation tube a5, the observation tube b6 and the observation tube c7, a floating thrust assembly 1 is arranged at the bottom of the observation tube b6 and the observation tube c7, and the A convex plate 8 is fixed to the bottom end of the external tube 4, and the convex plates 8 are provided with two and the two convex plates 8 are symmetrically distributed, and a reinforcement component 3 is provided on the convex plate 8; when fixing the position of the external tube 4, the external tube 4 is vertically inserted into the bottom of the water, and inserted into the deeper soil through the symmetrically arranged reinforcement components 3, so as to firmly fix the external tube 4, prevent the water flow from impacting the external tube 4 and causing the external tube 4 to be skewed, resulting in inaccurate detection, thereby further reinforcing the fixation of the external tube 4 in the soil, inserting the observation tube a5 into the inside of the external tube 4, and passing By filling the expansion clamp assembly 2 with liquid, the expansion clamp assembly 2 expands, so that the outer surface of the expansion clamp assembly 2 is tightly pressed against the inner wall of the outer tube 4, thereby fixing the observation tube a5 into the outer tube 4, and completing the installation of the observation tube a5 inside the outer tube 4. The installation is convenient and the assembly and disassembly efficiency is high. When not in use, the liquid in the expansion clamp assembly 2 is released to release the air pressure in the expansion clamp assembly 2, and the observation tube a5 can be easily removed from the outside of the outer tube 4, thereby reducing the overall volume, making it convenient to carry and transfer, and convenient to use. When the water level is low, the observation tube a5 can be easily removed from the outside of the outer tube 4 by the observation tube a5. The scale 11 on the measuring tube a5 is used to measure the water level. When the water level rises, water enters the float-propelled assembly 1, and the float-propelled assembly 1 is driven to work by the buoyancy of the water, so that the buoyancy of the float-propelled assembly 1 pushes the observation tube b6 and the observation tube c7 to be lifted up and extended in turn, so that the observation tube a5 is extended. Therefore, the water level can be continuously observed according to the scale 11 on the observation tube b6 and the observation tube c7. It is easy to use and can automatically extend the observation tube a5 to measure the water level according to the change of the water level, eliminating the operation of replacing the observation tube a5, and effectively improving the convenience of use.

[0035] Further as Figure 3 and Figure 4As shown, it is worth specifically explaining that the float-thrust assembly 1 includes a cavity b106 arranged at the bottom of the observation tube b6, a light float a101 is arranged in the cavity b106, a water inlet a103 connected to the cavity b106 is provided at the bottom of the observation tube a5, a cavity a105 is provided at the bottom of the observation tube c7, a light float b102 is arranged inside the cavity a105, a water inlet b104 connected to the cavity a105 is provided at the bottom of the observation tube b6, and a light float b102 is arranged in the cavity a105; when the water level is low, the water level is measured by the scale 11 on the observation tube a5, and when the water level is high, the water level is measured by the scale 11 on the observation tube a5. When the water level rises, water enters into the cavity b106 and the cavity a105 in turn through the water inlet a103 and the lightweight float b102, thereby pushing the lightweight float a101 and the lightweight float b102 to rise in turn through the buoyancy of the water, thereby pushing the observation tube b6 and the observation tube c7 to be lifted up and extended in turn through the buoyancy, so that the observation tube a5 can be extended according to the change of the water level, so that the water level can be continuously observed according to the scale 11 on the observation tube b6 and the observation tube c7. It is easy to use, and the observation tube a5 can be automatically extended to measure the water level according to the change of the water level, eliminating the operation of replacing the observation tube a5, effectively improving the convenience of use.

[0036] Further as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it is worth specifically explaining that the expansion clamp assembly 2 includes an arc-shaped rubber block 201 fixed on the side of the built-in block 9, a liquid cavity 202 is provided inside the arc-shaped rubber block 201, a fluid cylinder 203 connected with the liquid cavity 202 is fixed on the side wall of the external tube 4, a nut sleeve 207 is fixed in one end of the fluid cylinder 203 away from the arc-shaped rubber block 201, a threaded rod 204 is connected to the nut sleeve 207 through the internal thread, and a piston plate 206 that closely matches the inner side wall of the fluid cylinder 203 is fixed on one end of the threaded rod 204 located inside the fluid cylinder 203; the observation tube a5 is inserted into the inside of the external tube 4, and a certain amount of liquid is filled inside the fluid cylinder 203. By rotating the threaded rod 204, the threaded rod 204 The piston plate 206 is driven to move in the liquid cylinder 203, so that the liquid in the liquid cylinder 203 is squeezed into the arc-shaped rubber block 201 through the piston plate 206, so that the arc-shaped rubber block 201 is filled with liquid to expand the arc-shaped rubber block 201, so that the outer wall of the arc-shaped rubber block 201 is tightly pressed onto the inner wall of the external tube 4, so that the observation tube a5 is fixed to the external tube 4, and the installation of the observation tube a5 inside the external tube 4 is completed. The installation is convenient and the assembly and disassembly efficiency is high. When not in use, the air pressure inside the arc-shaped rubber block 201 can be released by rotating the threaded rod 204 in the opposite direction, so that the observation tube a5 can be easily removed from the inside of the external tube 4, thereby reducing the overall volume, making it convenient to carry and transfer, and convenient to use.

[0037] Further as Figure 4 and Figure 5 As shown, it is worth specifically explaining that a terminal plate a205 is fixed on one end of the threaded rod 204 located outside the fluid cylinder 203, and a rubber sleeve is fitted on the surface of the terminal plate a205; during specific work, the threaded rod 204 is conveniently rotated by the terminal plate a205 provided, which is convenient for operation.

[0038] Further as Figure 1 and Figure 7 As shown, it is worth specifically explaining that the reinforcement component 3 includes a threaded rod 301 threadedly connected to the convex plate 8, the top of the threaded rod 301 is fixed with an end plate b302, and the bottom of the threaded rod 301 is provided with a tip 303; during specific operation, the threaded rod 301 is rotated so that the threaded rod 301 is screwed down and inserted into the underwater soil, and the symmetrically arranged threaded rod 301 is screwed down and inserted into deeper soil, thereby firmly fixing the external tube 4, preventing the water flow from impacting the external tube 4 and causing the external tube 4 to be skewed, resulting in inaccurate detection, and further reinforcing the fixation of the external tube 4.

[0039] This scheme has the following working process: insert the external tube 4 vertically into the bottom of the water, rotate the threaded rod 301 so that the threaded rod 301 is screwed down and inserted into the soil at the bottom of the water, and the threaded rod 301 is screwed down and inserted into the deeper soil by the symmetrically arranged threaded rod 301, so as to firmly fix the external tube 4 and prevent the water flow from impacting the external tube 4 and causing the external tube 4 to be skewed; insert the observation tube a5 into the external tube 4, and rotate the threaded rod 204, so that the threaded rod 204 drives the piston plate 206 to move in the liquid cylinder 203, so that the liquid in the liquid cylinder 203 is squeezed into the arc-shaped rubber block 201 through the piston plate 206, so that the arc-shaped rubber block 201 is filled with liquid to expand the arc-shaped rubber block 201, so that the outer wall of the arc-shaped rubber block 201 is tightly pressed against the inner wall of the external tube 4, so that the observation tube a5 is fixed to the external tube 4, and the observation tube a5 is completely fixed to the external tube 4. The observation tube a5 is installed inside the external tube 4; when the water level is low, the water level is measured by the scale 11 on the observation tube a5. When the water level rises, water enters into the cavity b106 and the cavity a105 in turn through the water inlet a103 and the light float b102, thereby pushing the light float a101 and the light float b102 to rise in turn through the buoyancy of the water, thereby pushing the observation tube b6 and the observation tube c7 to be lifted up and extended in turn through the buoyancy, so that the observation tube a5 can be extended according to the change of the water level, so that the water level can be continuously observed according to the scale 11 on the observation tube b6 and the observation tube c7; when not in use, the air pressure inside the arc-shaped rubber block 201 can be released by rotating the threaded rod 204 in the opposite direction, so that the observation tube a5 can be easily removed from the inside of the external tube 4, reducing the overall volume and facilitating carrying and transfer.

[0040] Further as Figure 6 As shown, it is worth specifically explaining that rubber protrusions 208 are arranged on the outer surface of the arc-shaped rubber block 201, and the rubber protrusions 208 are arranged in plurality and the plurality of rubber protrusions 208 are equidistantly distributed; during specific operation, the plurality of rubber protrusions 208 are arranged to effectively increase the contact friction between the outer wall of the arc-shaped rubber block 201 and the inside of the external tube 4, thereby improving the installation stability.

[0041] Further as Figure 5 and Figure 6 As shown, it is worth explaining in detail that a through hole 10 is opened through the side of the built-in block 9, and a plurality of through holes 10 are provided and the plurality of through holes 10 are distributed in a ring shape; during specific operation, the plurality of through holes 10 are provided to facilitate water to enter.

[0042] Further as Figure 7As shown, it is worth explaining in detail that a handle rod 304 is fixed on the side of the end plate b302, a rubber sleeve 305 is fitted on the surface of the handle rod 304, and the bottom ends of the observation tube b6 and the observation tube c7 are both provided with an arc groove 107; during specific work, the threaded plug rod 301 is conveniently rotated by the provided rubber sleeve 305, which is convenient for operation, and the provided rubber sleeve 305 effectively increases the friction when holding the handle rod 304 to prevent slipping.

[0043] A method for monitoring water level changes adaptively comprises the following steps:

[0044] S1. Insert the external tube 4 vertically into the water bottom, rotate the threaded rod 301 so that the threaded rod 301 is screwed down and inserted into the soil at the bottom of the water, and the threaded rod 301 arranged symmetrically is screwed down and inserted into the deeper soil, thereby firmly fixing the external tube 4 and preventing the water flow from impacting the external tube 4 and causing the external tube 4 to be skewed;

[0045] S2, insert the observation tube a5 into the external tube 4, and by rotating the threaded rod 204, the threaded rod 204 drives the piston plate 206 to move in the liquid cylinder 203, so that the liquid in the liquid cylinder 203 is squeezed into the arc-shaped rubber block 201 through the piston plate 206, so that the arc-shaped rubber block 201 is filled with liquid to expand the arc-shaped rubber block 201, so that the outer side wall of the arc-shaped rubber block 201 is tightly pressed onto the inner side wall of the external tube 4, thereby fixing the observation tube a5 to the external tube 4, and completing the installation of the observation tube a5 inside the external tube 4;

[0046] S3. When the water level is low, the water level is measured by the scale 11 on the observation tube a5. When the water level rises, water enters into the cavity b106 and the cavity a105 in turn through the water inlet a103 and the light float b102, so that the light float a101 and the light float b102 are pushed up in turn by the buoyancy of the water, so that the observation tube b6 and the observation tube c7 are pushed up and extended in turn by the buoyancy, so that the observation tube a5 can be extended according to the change of the water level, so that the water level can be continuously observed according to the scale 11 on the observation tube b6 and the observation tube c7;

[0047] S4. When not in use, the air pressure inside the arc-shaped rubber block 201 can be released by rotating the threaded rod 204 in the opposite direction, so that the observation tube a5 can be easily removed from the inside of the external tube 4, thereby reducing the overall volume and facilitating carrying and transfer.

[0048] In summary: by inserting the symmetrically arranged reinforcement components 3 into deeper soil, the external tube 4 is firmly fixed, and the water flow is prevented from impacting the external tube 4 and causing the external tube 4 to be skewed, resulting in inaccurate detection, so as to further reinforce the fixation of the external tube 4 in the soil, and the observation tube a5 is inserted into the external tube 4, and the expansion clamp component 2 is filled with liquid to expand the expansion clamp component 2, so that the outer surface of the expansion clamp component 2 is tightly pressed onto the inner wall of the external tube 4, thereby fixing the observation tube a5 to the external tube 4, and completing the installation of the observation tube a5 inside the external tube 4. The installation is convenient and the assembly and disassembly efficiency is high. When not in use, the liquid inside the expansion clamp component 2 is released to release the expansion clamp component 2. The air pressure can conveniently remove the observation tube a5 from the inside of the external tube 4, reduce the overall volume, facilitate carrying and transfer, and be convenient to use; when the water level is low, the water level is measured by the scale 11 on the observation tube a5. When the water level rises, water enters the inside of the floating thrust assembly 1, and the floating thrust assembly 1 is driven to work by the buoyancy of the water, so that the buoyancy of the floating thrust assembly 1 pushes the observation tube b6 and the observation tube c7 to be lifted up and extended in turn, so that the observation tube a5 is extended, so that the water level can be continuously observed according to the scale 11 on the observation tube b6 and the observation tube c7. It is easy to use and can automatically extend the observation tube a5 to measure the water level according to the change of the water level, eliminating the operation of replacing the observation tube a5, and effectively improving the convenience of use.

Claims

1. A hydraulic monitoring device that is adaptive to water level changes, comprising an external connection tube (4), characterized in that: An observation tube a (5) is arranged inside the external tube (4), a built-in block (9) is fixed at the bottom end of the observation tube a (5), an expansion clamp assembly (2) is arranged on the side of the built-in block (9), an observation tube b (6) is inserted inside the observation tube a (5), an observation tube c (7) is inserted inside the observation tube b (6), scales (11) are arranged on the outer surfaces of the observation tube a (5), the observation tube b (6) and the observation tube c (7), a floating thrust assembly (1) is arranged at the bottom of the observation tube b (6) and the observation tube c (7), a convex plate (8) is fixed at the bottom end of the external tube (4), two convex plates (8) are arranged and the two convex plates (8) are symmetrically distributed, and a reinforcement assembly (3) is arranged on the convex plate (8).

2. The hydraulic monitoring device capable of self-adapting to water level changes according to claim 1, characterized in that: The float-thrust assembly (1) comprises a cavity b (106) arranged at the bottom of an observation tube b (6), a lightweight float ball a (101) being arranged in the cavity b (106), and a water inlet a (103) communicating with the cavity b (106) being provided at the bottom of the observation tube a (5).

3. The water conservancy monitoring device according to claim 2, which is self-adaptive to water level changes, is characterized in that: The bottom of the observation tube c (7) is provided with a cavity a (105), and a lightweight float b (102) is arranged inside the cavity a (105). The bottom of the observation tube b (6) is provided with a water inlet b (104) connected to the cavity a (105), and a lightweight float b (102) is arranged inside the cavity a (105).

4. The hydraulic monitoring device capable of self-adapting to water level changes according to claim 1, characterized in that: The expansion clamp assembly (2) comprises an arc-shaped rubber block (201) fixed on the side of the built-in block (9), a liquid cavity (202) is provided inside the arc-shaped rubber block (201), a liquid cylinder (203) connected to the liquid cavity (202) is fixed on the side wall of the external connecting tube (4), a nut sleeve (207) is fixed inside the end of the liquid cylinder (203) away from the arc-shaped rubber block (201), a threaded rod (204) is connected to the inner thread of the nut sleeve (207), and a piston plate (206) that is tightly matched with the inner wall of the liquid cylinder (203) is fixed on the end of the threaded rod (204) located inside the liquid cylinder (203).

5. The hydraulic monitoring device capable of self-adapting to water level changes according to claim 4, characterized in that: An end plate a (205) is fixed to one end of the threaded rod (204) located outside the fluid cylinder (203), and a rubber sleeve is fitted on the surface of the end plate a (205).

6. The water conservancy monitoring device capable of self-adapting to water level changes according to claim 5, characterized in that: The outer surface of the arc-shaped rubber block (201) is provided with rubber protrusions (208), and a plurality of the rubber protrusions (208) are provided and the plurality of rubber protrusions (208) are distributed at equal intervals.

7. The water conservancy monitoring device capable of self-adapting to water level changes according to claim 1, characterized in that: A through hole (10) is provided through the side surface of the built-in block (9), and a plurality of the through holes (10) are provided and the plurality of through holes (10) are distributed in a ring shape.

8. The water conservancy monitoring device capable of self-adapting to water level changes according to claim 7, characterized in that: The reinforcing assembly (3) comprises a threaded rod (301) threadedly connected to the convex plate (8), an end plate b (302) being fixed to the top end of the threaded rod (301), and a tip (303) being arranged on the bottom end of the threaded rod (301).

9. The hydraulic monitoring device capable of self-adapting to water level changes according to claim 8, characterized in that: A handle bar (304) is fixed on the side of the end plate b (302), a rubber sleeve (305) is fitted on the surface of the handle bar (304), and the bottom ends of the observation tube b (6) and the observation tube c (7) are both provided with an arc groove (107).

10. A method for monitoring water level changes according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Insert the external tube (4) vertically into the bottom of the water, rotate the threaded rod (301) so that the threaded rod (301) is screwed down and inserted into the soil at the bottom of the water, and the threaded rod (301) is screwed down and inserted into the deeper soil by the symmetrically arranged threads, thereby firmly fixing the external tube (4) and preventing the water flow from impacting the external tube (4) and causing the external tube (4) to be skewed; S2, inserting the observation tube a (5) into the interior of the external tube (4), and rotating the threaded rod (204), so that the threaded rod (204) drives the piston plate (206) to move in the liquid cylinder (203), thereby squeezing the liquid in the liquid cylinder (203) into the interior of the arc-shaped rubber block (201) through the piston plate (206), thereby filling the interior of the arc-shaped rubber block (201) with liquid to cause the arc-shaped rubber block (201) to expand, so that the outer side wall of the arc-shaped rubber block (201) is tightly pressed onto the inner side wall of the external tube (4), thereby fixing the observation tube a (5) into the external tube (4), and completing the installation of the observation tube a (5) inside the external tube (4); S3. When the water level is low, the water level is measured by the scale (11) on the observation tube a (5). When the water level rises, water enters the cavity b (106) and the cavity a (105) in turn through the water inlet a (103) and the light float b (102), thereby the light float a (101) and the light float b (102) are pushed up in turn by the buoyancy of the water, thereby pushing the observation tube b (6) and the observation tube c (7) to be lifted up and extended in turn by the buoyancy, so that the observation tube a (5) can be extended according to the change of the water level, so that the water level can be continuously observed according to the scale (11) on the observation tube b (6) and the observation tube c (7); S4. When not in use, the air pressure inside the arc-shaped rubber block (201) can be released by rotating the threaded rod (204) in the opposite direction, so that the observation tube a (5) can be easily removed from the inside of the external tube (4), thereby reducing the overall volume and facilitating carrying and transfer.

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