A water level detection device for small and medium-sized reservoirs

Abstract

The present invention provides a water level detection device for small and medium-sized reservoirs, comprising: a water well, a receiving chamber provided in the water well, a flow port provided on the water well, the flow port being connected to the receiving chamber; a measuring instrument located on one side of the water well; a water level measuring disc, the water level measuring disc being rotatably connected to the measuring instrument; a counterweight structure located in the receiving chamber, the counterweight structure being provided with a sealed chamber; a movable pulley located in the sealed chamber, the movable pulley being rotatably connected to the counterweight structure; a float located in the receiving chamber, the float being a retractable member; and a cable wound around the outer sides of the water level measuring disc and the movable pulley. When the buoyancy applied to the float increases, the float contracts to shorten the distance between the first end and the second end of the cable; and when the buoyancy applied to the float decreases, the float expands to increase the distance between the first end and the second end of the cable. The present invention can prevent the influence of short-term rise and fall of the water surface caused by waves in the reservoir on the measuring instrument, thereby improving the detection accuracy of the detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of testing devices, in particular to a water level detection device for small and medium-sized reservoirs. Background Art

[0002] The water level of small and medium-sized reservoirs changes rapidly. When the water level detection device is detecting the water level, water flows in and out of the measuring well frequently. In order to avoid blockage of the water inlet of the measuring well, the cross-sectional area of ​​the water inlet will be increased. However, the increase in the water inlet will cause the waves of the reservoir to be transmitted to the measuring well, affecting the float of the water level detection device, causing deviations in the detection results, resulting in large detection errors of the water level detection device. Summary of the Invention

[0003] Based on this, it is necessary to provide a water level detection device for small and medium-sized reservoirs to address the problem of large detection errors in current water level detection devices.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A water level detection device for small and medium-sized reservoirs includes: a water logging well, a receiving chamber provided in the water logging well, a flow port provided on the water logging well, the flow port being connected to the receiving chamber; a measuring instrument located on one side of the water logging well; a water level measuring disk, the water level measuring disk being rotatably connected to the measuring instrument; a counterweight structure located in the receiving chamber, a sealed chamber provided in the counterweight structure, a first opening and a second opening provided on the counterweight structure, the sealed chamber being connected to the first opening and the second opening; a movable pulley located in the sealed chamber, the movable pulley being rotatably connected to the counterweight structure; a float located in the receiving chamber, the float being located between the measuring instrument and the counterweight structure The float is a retractable part; the cable has a first end and a second end, and the float is connected between the first end and the second end; the first part of the cable extends out of the water well and is sleeved on the outside of the water level measuring disk, and the second part of the cable extends into the sealed cavity through the first opening, bypasses the movable pulley and extends out of the counterweight structure through the second opening; when the buoyancy of the float increases, the float contracts to shorten the distance between the first end of the cable and the second end of the cable; when the buoyancy of the float decreases, the float expands to increase the distance between the first end of the cable and the second end of the cable.

[0006] In one embodiment, the float has a first end surface and a second end surface disposed opposite to each other, the first end of the cable is connected to the first end surface of the float, and the second end of the cable is connected to the second end surface of the float.

[0007] In one embodiment, the float includes: a first cover plate, the first cover plate having a first end surface; a second cover plate, the second cover plate having a second end surface; a bellows, the bellows connected between the first cover plate and the second cover plate, the first cover plate, the bellows and the second cover plate enclosing a working chamber; and an elastic member located in the working chamber, the elastic member connected between the first cover plate and the second cover plate.

[0008] In one embodiment, the elastic member is spaced apart from the inner surface of the bellows.

[0009] In one embodiment, the water level detection device for small and medium-sized reservoirs also includes: a one-way air inlet valve, which is provided on the float and connected to the working chamber; an air pipe, which is connected between the float and the counterweight structure, connected to the working chamber, and connected to the sealing chamber; a one-way air outlet valve, which is provided on the counterweight structure and connected to the sealing chamber.

[0010] In one embodiment, the one-way air inlet valve is provided on a side of the float away from the counterweight structure, and the one-way air outlet valve is provided on a side of the counterweight structure away from the float.

[0011] In one embodiment, the counterweight structure includes: a shell, which is provided with a first opening and a second opening, the inner surface of the shell encloses a sealed cavity, and the movable pulley is rotatably connected to the shell; a counterweight part, which is located on the outside of the shell and is connected to the shell.

[0012] In one embodiment, the counterweight structure further includes: two hangers, the two hangers are arranged at intervals, the counterweight part is connected to the shell through the two hangers, and the one-way air outlet valve is located between the two hangers; the counterweight part includes a plurality of detachably connected counterweight blocks.

[0013] In one embodiment, one end of the water logging well has a third opening, and the first part of the cable extends out of the water logging well through the third opening; the water level detection device for small and medium-sized reservoirs also includes a support plate, which is arranged at the end of the water logging well having the third opening, and the support plate covers a part of the third opening. The measuring device is arranged on the side of the support plate away from the water logging well, and the part of the water level measuring disk that cooperates with the cable protrudes out of the outer peripheral wall of the support plate.

[0014] In one embodiment, the water level detection device for small and medium-sized reservoirs further includes: a fixed block connected to a side of the water logging well away from the measuring device, and the fixed block is used for installing and positioning the water logging well.

[0015] In some other embodiments, the flow port is arranged opposite to the counterweight structure.

[0016] The water level detection device for small and medium-sized reservoirs of the present invention comprises a water measuring well, a measuring device, a water level measuring disk, a counterweight structure, a movable pulley, a float and a cable.

[0017] The cable has a first end and a second end, and the first end of the cable is disconnected from the second end of the cable. The float is connected between the first end of the cable and the second end of the cable, that is, the float and the cable are connected to enclose a ring-shaped structure.

[0018] A accommodating cavity is provided in the water logging well, and a flow port is provided on the water logging well. The flow port is connected with the accommodating cavity. Water in the reservoir can flow into the accommodating cavity through the flow port, and water in the accommodating cavity can also flow into the reservoir through the flow port.

[0019] The measuring device is located on one side of the well, meaning it's outside the well. The water level measuring disc is rotatably connected to the measuring device, meaning it can rotate relative to the measuring device. When the water level in the reservoir changes, the water level in the well's chamber also changes. The float moves with the liquid level in the chamber, and this movement drives the water level measuring disc to rotate. The measuring device records the water level information based on the disc's rotation data to determine the water level.

[0020] The counterweight structure, movable pulley, and float are all located within the accommodating chamber of the water logging well. A sealed chamber is provided within the counterweight structure, and the movable pulley is located within the sealed chamber. The movable pulley is rotationally connected to the counterweight structure, that is, the movable pulley can rotate relative to the counterweight structure.

[0021] The first portion of the cable extends from the water logging well and is sheathed around the outside of the water level measuring disc. The second portion of the cable extends through the first opening into the sealed chamber, bypasses the movable pulley, and extends through the second opening to the counterweight structure. The float is located between the measuring device and the counterweight structure. It is understood that the cable includes a first portion, a second portion, a third portion, and a fourth portion, with the third and fourth portions each connected between the first and second portions, and spaced apart from each other. One of the third and fourth portions has a first end and a second end, meaning that the float is connected to the third portion of the cable, or the float is connected to the fourth portion of the cable.

[0022] Specifically, when waves appear in the reservoir, the water level in the chamber within the water measuring well suddenly changes. For example, when the water level rises and the float is connected to the third portion of the cable, the volume of water contacted by the float increases, the buoyancy of the float increases, and the float contracts to shorten the distance between the first end of the cable and the second end of the cable, thereby driving the counterweight structure and the movable pulley toward the measuring device. The float is located between the measuring device and the counterweight structure and is connected to the third portion of the cable. Therefore, the fourth portion of the cable hardly moves. This prevents the water level measuring disc from rotating and the measuring device from recording the fluctuations of the waves. This provides a good shock-absorbing effect and can shield the measuring device from the impact of the short-term rise and fall of the water surface caused by waves in the reservoir. This helps reduce the detection error of water level detection devices for small and medium-sized reservoirs and improves the detection precision and accuracy of water level detection devices for small and medium-sized reservoirs.

[0023] It is understandable that when the water level of the reservoir really rises, the water level in the containing chamber of the water measuring well will also rise. The float will move with the liquid level in the containing chamber. Under the influence of the gravity of the counterweight structure, the fourth part of the cable will gradually move. In this way, the water level measuring disk will rotate accordingly, and the measuring device will also record the water level information.

[0024] Specifically, when waves appear in the reservoir, the water level in the receiving chamber within the water measuring well suddenly changes. For example, when the water level drops and the float is connected to the third portion of the cable, as the water level drops, the volume of water contacted by the float decreases, reducing the buoyancy experienced by the float. The float then expands to increase the distance between the first and second ends of the cable, thereby driving the counterweight structure and the movable pulley to move away from the measuring device. The float is located between the measuring device and the counterweight structure and is connected to the third portion of the cable. Therefore, the fourth portion of the cable barely moves. This prevents the water level measuring disc from rotating, and the measuring device from recording the wave fluctuations. This provides excellent shock absorption, shielding the measuring device from the effects of short-term water level fluctuations caused by waves in the reservoir. This helps reduce detection errors in water level detection devices for small and medium-sized reservoirs, and improves the detection precision and accuracy of water level detection devices for small and medium-sized reservoirs.

[0025] It is understandable that when the water level of the reservoir really drops, the water level in the holding chamber of the water measuring well will also drop. The float will move with the liquid surface in the holding chamber. Under the influence of the gravity of the counterweight structure, the fourth part of the cable will gradually move. In this way, the water level measuring disk will rotate accordingly, and the measuring device will also record the water level information.

[0026] In addition, since the movable pulley is arranged in the counterweight structure and the movable pulley is rotatably connected to the counterweight structure, it can ensure that the part of the cable located between the measuring device and the counterweight structure is perpendicular to the liquid surface in the accommodating chamber, which can reduce the probability of cable agitation caused by water flow movement, and can ensure the effective contact area and friction between the cable and the water level measuring disk and the movable pulley, thereby providing structural support for further improving the detection accuracy of water level detection devices for small and medium-sized reservoirs.

[0027] In other words, the present invention rationally sets up the structure of the water level detection device for small and medium-sized reservoirs. While ensuring the feasibility and effectiveness of water level detection, it can avoid the influence of the short-term rise and fall of the water surface caused by waves in the reservoir on the measuring instrument, thereby improving the detection accuracy of the water level detection device for small and medium-sized reservoirs.

[0028] It can be understood that the movable pulley is located in the sealed cavity of the counterweight structure, that is, the counterweight structure can include the movable pulley, which can isolate the movable pulley from the external water, prevent the movable pulley from being affected by impurities in the water and getting stuck, and ensure that the movable pulley rotates smoothly and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a water level detection device for small and medium-sized reservoirs from a first perspective according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1 A partial enlarged view of point A of the water level detection device for small and medium-sized reservoirs shown;

[0031] Figure 3 This is a schematic structural diagram of a water level detection device for small and medium-sized reservoirs from a second perspective according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic structural diagram of a water level detection device for small and medium-sized reservoirs from a third perspective according to an embodiment of the present invention;

[0033] Figure 5 for Figure 4 A partial enlarged view of point B of the water level detection device for small and medium-sized reservoirs shown;

[0034] Figure 6 A cross-sectional view of a water level detection device for small and medium-sized reservoirs according to an embodiment of the present invention;

[0035] Figure 7 for Figure 6 The enlarged view of the part C of the water level detection device for small and medium-sized reservoirs shown;

[0036] Figure 8 for Figure 6 The enlarged view of the D part of the water level detection device for small and medium-sized reservoirs is shown.

[0037] Among them: 10 small and medium-sized reservoir water level detection device, 100 water well, 110 accommodating chamber, 120 flow outlet, 130 third opening, 200 measuring device, 300 water level measuring disc, 400 counterweight structure, 410 sealing chamber, 420 first opening, 430 second opening, 440 shell, 450 counterweight part, 452 counterweight block, 460 suspension rod, 500 movable pulley, 600 float, 610 first end face, 620 second end Surface, 630 first cover plate, 640 second cover plate, 650 bellows, 660 working chamber, 670 elastic member, 700 cable, 710 first end portion, 720 second end portion, 730 first portion, 740 second portion, 750 third portion, 760 fourth portion, 800 one-way air inlet valve, 900 air pipe, 1000 one-way air outlet valve, 1100 support plate, 1102 outer peripheral wall of the support plate, 1200 fixing block. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0040] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0041] Refer to the following Figures 1 to 8 The water level detection device 10 for small and medium-sized reservoirs according to some embodiments of the present invention is described.

[0042] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, a water level detection device 10 for small and medium-sized reservoirs according to some embodiments of the present invention includes: a water logging well 100, wherein the water logging well 100 is provided with a receiving chamber 110, and a flow port 120 is provided on the water logging well 100, and the flow port 120 is connected to the receiving chamber 110; a measuring device 200, located on one side of the water logging well 100; a water level measuring disk 300, and the water level measuring disk 300 is rotatably connected to the measuring device 200; a counterweight structure 400, located in the receiving chamber 110, wherein a sealed chamber 410 is provided in the counterweight structure 400, and a first opening 420 and a second opening 430 are provided on the counterweight structure 400, and the sealed chamber 410 is connected to the first opening 420 and the second opening 430; a movable pulley 500, located in the sealed chamber 410, and the movable pulley 500 is rotatably connected to the counterweight structure 400; a float 600, located in the receiving chamber 110, and the float 600 is located in the measuring device 200. and the counterweight structure 400, the float 600 is a retractable member; the cable 700, the cable 700 has a first end 710 and a second end 720, and the float 600 is connected between the first end 710 and the second end 720; the first portion 730 of the cable 700 extends out of the water logging well 100 and is sleeved on the outside of the water level measuring disk 300, and the second portion 740 of the cable 700 extends into the sealed cavity 410 through the first opening 420, bypasses the movable pulley 500 and extends out of the counterweight structure 400 through the second opening 430; when the buoyancy applied to the float 600 increases, the float 600 contracts to shorten the distance between the first end 710 of the cable 700 and the second end 720 of the cable 700; when the buoyancy applied to the float 600 decreases, the float 600 expands to increase the distance between the first end 710 of the cable 700 and the second end 720 of the cable 700.

[0043] In this embodiment, the water level detection device 10 for small and medium-sized reservoirs includes a water well 100 , a measuring device 200 , a water level measuring disk 300 , a counterweight structure 400 , a movable pulley 500 , a float 600 and a cable 700 .

[0044] The cable 700 has a first end 710 and a second end 720, and the first end 710 of the cable 700 is disconnected from the second end 720 of the cable 700. The float 600 is connected between the first end 710 of the cable 700 and the second end 720 of the cable 700. That is, the float 600 and the cable 700 are connected to enclose a ring-shaped structure.

[0045] A accommodating chamber 110 is provided in the water logging well 100 , and a flow port 120 is provided on the water logging well 100 . The flow port 120 is connected to the accommodating chamber 110 . Water in the reservoir can flow into the accommodating chamber 110 through the flow port 120 , and water in the accommodating chamber 110 can also flow into the reservoir through the flow port 120 .

[0046] The measuring device 200 is located on one side of the water well 100, that is, outside the water well 100. The water level measuring disc 300 is rotatably connected to the measuring device 200, that is, the water level measuring disc 300 can rotate relative to the measuring device 200. When the water level in the reservoir changes, the water level in the receiving chamber 110 of the water well 100 also changes accordingly. The float 600 moves with the liquid level in the receiving chamber 110. This movement of the float 600 drives the water level measuring disc 300 to rotate. The measuring device 200 records the water level information based on the rotation data of the water level measuring disc 300 to determine the water level.

[0047] The counterweight structure 400, movable pulley 500, and float 600 are all located within the accommodating chamber 110 of the water logging well 100. A sealed chamber 410 is defined within the counterweight structure 400, and the movable pulley 500 is located within the sealed chamber 410. The movable pulley 500 is rotatably connected to the counterweight structure 400, that is, the movable pulley 500 can rotate relative to the counterweight structure 400.

[0048] The first portion 730 of the cable 700 extends from the water logging well 100 and is sheathed outside the water level measuring disk 300. The second portion 740 of the cable 700 extends through the first opening 420 into the sealed chamber 410, bypasses the movable pulley 500, and extends out of the counterweight structure 400 through the second opening 430. The float 600 is located between the measuring device 200 and the counterweight structure 400. It will be understood that the cable 700 includes a first portion 730, a second portion 740, a third portion 750, and a fourth portion 760. The third portion 750 and the fourth portion 760 are both connected between the first portion 730 and the second portion 740, and are spaced apart from each other. One of the third portion 750 and the fourth portion 760 has a first end 710 and a second end 720. In other words, the float 600 is connected to the third portion 750 of the cable 700, or the float 600 is connected to the fourth portion 760 of the cable 700.

[0049] Specifically, when waves appear in the reservoir, the water level in the receiving chamber 110 within the water logging well 100 suddenly changes. For example, when the water level rises and the float 600 is connected to the third portion 750 of the cable 700, as the water level rises, the volume of the float 600 in contact with the water increases, increasing the buoyancy of the float 600. The float 600 contracts, shortening the distance between the first end 710 and the second end 720 of the cable 700, thereby driving the counterweight structure 400 and the movable pulley 500 toward the measuring device 200. Among them, the float 600 is located between the measuring device 200 and the counterweight structure 400, and the float 600 is connected to the third part 750 of the cable 700. Therefore, the fourth part 760 of the cable 700 hardly moves. In this way, the water level measuring disk 300 does not rotate, and the measuring device 200 will not record the fluctuation of the waves. It has a good shock-absorbing effect and can shield the influence of the short-term rise and fall of the water surface caused by the waves in the reservoir on the measuring device 200, which is beneficial to reducing the detection error of the water level detection device 10 for small and medium-sized reservoirs, and is beneficial to improving the detection precision and accuracy of the water level detection device 10 for small and medium-sized reservoirs.

[0050] It is understandable that when the water level of the reservoir really rises, the water level in the accommodating chamber 110 of the water logging well 100 will also rise, and the float 600 will move with the liquid level in the accommodating chamber 110. Under the influence of the gravity of the counterweight structure 400, the fourth part 760 of the cable 700 will gradually move. In this way, the water level measuring disk 300 will rotate accordingly, and the measuring device 200 will also record the water level information.

[0051] Specifically, when waves appear in the reservoir, the water level in the accommodating chamber 110 within the water logging well 100 suddenly changes. For example, when the water level drops and the float 600 is connected to the third portion 750 of the cable 700, as the water level drops, the volume of water contacted by the float 600 decreases, reducing the buoyancy experienced by the float 600. The float 600 then expands, increasing the distance between the first end 710 and the second end 720 of the cable 700, thereby driving the counterweight structure 400 and the movable pulley 500 to move away from the measuring device 200. Among them, the float 600 is located between the measuring device 200 and the counterweight structure 400, and the float 600 is connected to the third part 750 of the cable 700. Therefore, the fourth part 760 of the cable 700 hardly moves. In this way, the water level measuring disk 300 does not rotate, and the measuring device 200 will not record the fluctuation of the waves. It has a good shock-absorbing effect and can shield the influence of the short-term rise and fall of the water surface caused by the waves in the reservoir on the measuring device 200, which is beneficial to reducing the detection error of the water level detection device 10 for small and medium-sized reservoirs, and is beneficial to improving the detection precision and accuracy of the water level detection device 10 for small and medium-sized reservoirs.

[0052] It is understandable that when the water level of the reservoir really drops, the water level in the accommodating chamber 110 of the water logging well 100 will also drop, and the float 600 will move with the liquid level in the accommodating chamber 110. Under the influence of the gravity of the counterweight structure 400, the fourth part 760 of the cable 700 will gradually move. In this way, the water level measuring disk 300 will rotate accordingly, and the measuring device 200 will also record the water level information.

[0053] Since the movable pulley 500 is arranged in the counterweight structure 400 and the movable pulley 500 is rotatably connected to the counterweight structure 400, it can be ensured that the part of the cable 700 located between the measuring device 200 and the counterweight structure 400 is perpendicular to the liquid surface in the accommodating chamber 110, which can reduce the probability of the cable 700 being stirred due to the movement of water flow, and can ensure the effective contact area and friction between the cable 700 and the water level measuring disk 300 and the movable pulley 500, thereby providing structural support for further improving the detection accuracy of the water level detection device 10 for small and medium-sized reservoirs.

[0054] In other words, the present invention reasonably sets up the structure of the water level detection device 10 for small and medium-sized reservoirs. While ensuring the feasibility and effectiveness of water level detection, it can avoid the influence of the short-term rise and fall of the water surface caused by waves in the reservoir on the measuring device 200, thereby improving the detection accuracy of the water level detection device 10 for small and medium-sized reservoirs.

[0055] In addition, the movable pulley 500 is located in the sealed cavity 410 of the counterweight structure 400, that is, the counterweight structure 400 can include the movable pulley 500, which can isolate the movable pulley 500 from the external water, prevent the movable pulley 500 from being affected by impurities in the water and getting stuck, and ensure that the movable pulley 500 rotates smoothly and effectively.

[0056] In some embodiments, as Figure 6 and Figure 7 As shown, the float 600 has a first end surface 610 and a second end surface 620 opposite to each other. The first end 710 of the cable 700 is connected to the first end surface 610 of the float 600 , and the second end 720 of the cable 700 is connected to the second end surface 620 of the float 600 .

[0057] In this embodiment, the matching structure of the float 600 and the cable 700 is further defined.

[0058] Specifically, the float 600 has a first end surface 610 and a second end surface 620 that are opposite and spaced apart. The first end 710 of the cable 700 is connected to the first end surface 610 of the float 600 , and the second end 720 of the cable 700 is connected to the second end surface 620 of the float 600 .

[0059] This arrangement increases the length of the portion of the float 600 located between the first end 710 of the cable 700 and the second end 720 of the cable 700. In this way, when the float 600 expands and contracts, the distance between the first end 710 of the cable 700 and the second end 720 of the cable 700 changes by a larger stroke, which can adapt to the short-term rise and fall of the water surface caused by larger and smaller waves in the reservoir, and can effectively shield the influence of the short-term rise and fall of the water surface caused by the waves in the reservoir on the measuring device 200.

[0060] In some other embodiments, the second end 720 of the cable 700 is connected to a side of the float 600 .

[0061] In some embodiments, as Figure 6 and Figure 7 As shown, the float 600 includes: a first cover plate 630, the first cover plate 630 having a first end surface 610; a second cover plate 640, the second cover plate 640 having a second end surface 620; a bellows 650, the bellows 650 connected between the first cover plate 630 and the second cover plate 640, and the first cover plate 630, the bellows 650 and the second cover plate 640 enclose a working chamber 660; and an elastic member 670 located in the working chamber 660, and the elastic member 670 connected between the first cover plate 630 and the second cover plate 640.

[0062] In this embodiment, the float 600 includes a bellows 650, a first cover plate 630, and a second cover plate 640. The bellows 650 is connected between the first cover plate 630 and the second cover plate 640. The first cover plate 630, the bellows 650, and the second cover plate 640 enclose a working chamber 660.

[0063] The first end portion 710 of the cable 700 is connected to the first cover plate 630 . The second end portion 720 of the cable 700 is connected to the second cover plate 640 .

[0064] When the buoyancy of the float 600 increases, the bellows 650 contracts to reduce the volume of the working chamber 660 , and the elastic member 670 is compressed accordingly, and the distance between the first end 710 and the second end 720 of the cable 700 also decreases accordingly.

[0065] When the buoyancy of the float 600 increases, the external force acting on the elastic member 670 gradually decreases or even disappears completely, and the elastic member 670 is then reset. The reset of the elastic member 670 can drive the bellows 650 to reset, thereby increasing the volume of the working chamber 660. At the same time, the distance between the first end 710 of the cable 700 and the second end 720 of the cable 700 also increases.

[0066] Optionally, the elastic member 670 includes a spring, a compression spring, a tension spring, a torsion spring, etc., which are not listed here one by one.

[0067] In some embodiments, the elastic member 670 is spaced apart from the inner surface of the bellows 650 .

[0068] In this embodiment, the matching structure of the elastic member 670 and the bellows 650 is further defined.

[0069] Specifically, the elastic member 670 is spaced apart from the inner surface of the bellows 650. That is, there is a gap between the elastic member 670 and the inner surface of the bellows 650, so that when the float 600 expands or contracts, the elastic member 670 does not interfere with the bellows 650, allowing the bellows 650 to expand or contract effectively.

[0070] In addition, this arrangement also provides an escape space for the elastic member 670 to deform, thereby avoiding the situation where the elastic member 670 is hindered from deforming, and provides effective and reliable structural support for the float 600 to switch between the expanded state and the contracted state.

[0071] In some embodiments, as Figure 6 、 Figure 7 and Figure 8 As shown, the water level detection device 10 for small and medium-sized reservoirs also includes: a one-way air inlet valve 800, which is arranged on the float 600, and the one-way air inlet valve 800 is connected to the working chamber 660; an air pipe 900, the air pipe 900 is connected between the float 600 and the counterweight structure 400, the air pipe 900 is connected to the working chamber 660, and the air pipe 900 is connected to the sealing chamber 410; a one-way air outlet valve 1000, which is arranged on the counterweight structure 400, and the one-way air outlet valve 1000 is connected to the sealing chamber 410.

[0072] In this embodiment, the structure of the water level detection device 10 for small and medium-sized reservoirs is further defined.

[0073] Specifically, the water level detection device 10 for small and medium-sized reservoirs further includes a one-way air inlet valve 800 , an air pipe 900 and a one-way air outlet valve 1000 .

[0074] The one-way air inlet valve 800 is provided on the float 600 and is in communication with the working chamber 660. That is, the gas in the environment can enter the working chamber 660 through the one-way air inlet valve 800, but the gas in the working chamber 660 cannot be discharged from the float 600 through the one-way air inlet valve 800.

[0075] The one-way gas outlet valve 1000 is provided on the counterweight structure 400 and is in communication with the sealed cavity 410. That is, the gas in the sealed cavity 410 can be discharged from the counterweight structure 400 through the one-way gas outlet valve 1000, while the gas in the environment cannot enter the sealed cavity 410 through the one-way gas outlet valve 1000.

[0076] The air pipe 900 is connected between the float 600 and the counterweight structure 400 , the air pipe 900 is connected to the working chamber 660 , and the air pipe 900 is connected to the sealing chamber 410 .

[0077] When the air pressure in the working chamber 660 of the float 600 increases, the gas in the working chamber 660 can flow through the air pipe 900 to the sealed chamber 410 of the counterweight structure 400. When the pressure in the sealed chamber 410 increases to a predetermined value, the one-way air outlet valve 1000 overcomes the water pressure and opens, allowing a portion of the gas in the sealed chamber 410 to be discharged from the counterweight structure 400 through the one-way air outlet valve 1000. At the same time, the accumulated water in the sealed chamber 410 can also be discharged from the counterweight structure 400 through the one-way air outlet valve 1000 under the influence of the gas.

[0078] It is understood that the movable pulley 500 is located within the sealed cavity 410 of the counterweight structure 400. That is, the counterweight structure 400 can cover the movable pulley 500, and the sealed cavity 410 is filled with gas. This prevents the movable pulley 500 from being affected by impurities in the water and becoming stuck, ensuring smooth and effective rotation of the movable pulley 500. At the same time, when the bellows 650 expands and contracts under the influence of the waves, the gas entering the working cavity 660 through the one-way air inlet valve 800 of the bellows 650 is pushed into the sealed cavity 410, preventing the sealed cavity 410 from leaking and gradually failing.

[0079] It is understandable that when the water level rises, the one-way air outlet valve 1000 of the counterweight structure 400 is more difficult to open, which is conducive to improving the rigidity of the bellows 650 and can more promptly reflect the information of water level fluctuations when the water level of the reservoir is high.

[0080] In some embodiments, the one-way air inlet valve 800 is disposed on a side of the float 600 away from the counterweight structure 400 , and the one-way air outlet valve 1000 is disposed on a side of the counterweight structure 400 away from the float 600 .

[0081] In this embodiment, the installation positions of the one-way air inlet valve 800 and the one-way air outlet valve 1000 are further defined.

[0082] Specifically, the one-way air intake valve 800 is arranged on the side of the float 600 away from the counterweight structure 400. In this way, the distance between the one-way air intake valve 800 and the liquid level in the accommodating chamber 110 can be increased, so that the one-way air intake valve 800 can be separated from the water in the accommodating chamber 110, thereby preventing water from flowing into the working chamber 660 through the one-way air intake valve 800.

[0083] Specifically, the one-way air outlet valve 1000 is arranged on the side of the counterweight structure 400 away from the float 600. This arrangement is more conducive to the accumulated water in the sealed cavity 410 being discharged from the counterweight structure 400 through the one-way air outlet valve 1000 under the drive of gas.

[0084] When the pressure in the sealed cavity 410 increases to a preset value, part of the gas in the sealed cavity 410 will be discharged, and the water in the sealed cavity 410 will be squeezed out at the same time. At the same time, this structural setting can prevent the bellows 650 from being too rigid and causing poor shock absorption effect.

[0085] In some embodiments, as Figure 6 and Figure 8 As shown, the counterweight structure 400 includes: a shell 440, which is provided with a first opening 420 and a second opening 430, the inner surface of the shell 440 encloses a sealed cavity 410, and the movable pulley 500 is rotatably connected to the shell 440; a counterweight part 450, which is located on the outside of the shell 440 and is connected to the shell 440.

[0086] In this embodiment, the composition structure of the counterweight structure 400 is further defined.

[0087] Specifically, the counterweight structure 400 includes a housing 440 and a counterweight portion 450 .

[0088] The housing 440 is provided with a first opening 420 and a second opening 430. The inner surface of the housing 440 encloses a sealed cavity 410, which communicates with the first opening 420 and the second opening 430. The movable pulley 500 is located within the housing 440. The housing 440 protects the movable pulley 500 and provides structural support for the effective rotation of the movable pulley 500. The movable pulley 500 is rotatably connected to the housing 440, that is, the movable pulley 500 can rotate relative to the housing 440.

[0089] The counterweight 450 is located outside the housing 440 and is connected to the housing 440. Under the action of gravity, the counterweight 450 pulls the cable 700 downward, so that the portion of the cable 700 located between the measuring device 200 and the counterweight structure 400 is perpendicular to the liquid surface in the accommodating chamber 110, thereby reducing the probability of the cable 700 being agitated by the movement of the water flow.

[0090] Optionally, one of the movable pulley 500 and the housing 440 is provided with a rotating shaft, and the other of the movable pulley 500 and the housing 440 is provided with a shaft sleeve, and the rotating shaft is rotatably connected to the shaft sleeve.

[0091] In some embodiments, as Figure 6 and Figure 8 As shown, the counterweight structure 400 also includes: two hangers 460, the two hangers 460 are arranged at intervals, the counterweight part 450 is connected to the shell 440 through the two hangers 460, and the one-way air outlet valve 1000 is located between the two hangers 460; the counterweight part 450 includes a plurality of detachably connected counterweight blocks 452.

[0092] In this embodiment, the composition structure of the counterweight structure 400 is further defined.

[0093] Specifically, the counterweight structure 400 further includes two suspension rods 460. The two suspension rods 460 are spaced apart, and each suspension rod 460 is connected between the counterweight portion 450 and the housing 440. In other words, the counterweight portion 450 is connected to the housing 440 via the two suspension rods 460. In other words, the counterweight portion 450 is suspended from one side of the housing 440 via the two suspension rods 460.

[0094] Furthermore, the one-way air outlet valve 1000 is located between the two suspension rods 460 , and the one-way air outlet valve 1000 is located at the bottom of the shell 440 to ensure that the seepage water and gas in the sealed cavity 410 are effectively discharged under the action of pressure.

[0095] Furthermore, the counterweight portion 450 includes a plurality of detachably connected counterweight blocks 452. In other words, the number of counterweight blocks 452 can be adjusted based on specific practical needs, such as increasing or decreasing the number of counterweight blocks 452. This configuration can meet the needs of various working conditions.

[0096] In some embodiments, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, one end of the water logging well 100 has a third opening 130, and the first part 730 of the cable 700 extends out of the water logging well 100 through the third opening 130; the water level detection device 10 for small and medium-sized reservoirs also includes a support plate 1100, which is arranged at one end of the water logging well 100 having the third opening 130, and the support plate 1100 covers a part of the third opening 130. The measuring device 200 is arranged on the side of the support plate 1100 away from the water logging well 100, and the part of the water level measuring disk 300 that cooperates with the cable 700 protrudes out of the outer peripheral wall 1102 of the support plate.

[0097] In this embodiment, the water level detection device 10 for small and medium-sized reservoirs further includes a support plate 1100 .

[0098] One end of the water logging well 100 has a third opening 130. A support plate 1100 is disposed at the end of the water logging well 100 having the third opening 130, and the support plate 1100 covers a portion of the third opening 130. The first portion 730 of the cable 700 extends out of the water logging well 100 through the portion of the third opening 130 not covered by the support plate 1100.

[0099] The measuring device 200 is arranged on the side of the support plate 1100 away from the water well 100. The support plate 1100 has the function of supporting the measuring device 200 and the water level measuring disk 300, so that the measuring device 200 and the water level measuring disk 300 are separated from the water in the water well 100, providing structural support to ensure the detection accuracy of the measuring device 200 and ensure the effective rotation of the water level measuring disk 300.

[0100] Furthermore, the part of the water level measuring disc 300 that cooperates with the cable 700 protrudes out of the outer peripheral wall 1102 of the support plate. This arrangement prevents the support plate 1100 from interfering with the cable 700, so that the part of the cable 700 located between the measuring device 200 and the counterweight structure 400 can be arranged vertically, and the cable 700 will not be scratched by the support plate 1100 when moving. In this way, on the one hand, the service life of the cable 700 can be guaranteed, and on the other hand, the detection accuracy of the water level detection device 10 for small and medium-sized reservoirs can be guaranteed.

[0101] In some other embodiments, the support plate 1100 covers the third opening 130 of the water logging well 100, and the support plate 1100 is provided with an avoidance opening. The first part 730 of the cable 700 extends out of the support plate 1100 through the avoidance opening and is sleeved on the outside of the water level measuring disk 300.

[0102] In some embodiments, as Figure 1 、 Figure 3 、 Figure 4 and Figure 6 As shown, the water level detection device 10 for small and medium-sized reservoirs further includes: a fixing block 1200 , which is connected to the side of the water logging well 100 away from the measuring device 200 , and is used for installation and positioning of the water logging well 100 .

[0103] In this embodiment, the structure of the water level detection device 10 for small and medium-sized reservoirs is further defined.

[0104] Specifically, the small and medium-sized reservoir water level detection device 10 further includes a fixing block 1200, which is connected to the side of the water logging well 100 facing away from the measuring device 200. The fixing block 1200 is used to install and position the water logging well 100. In other words, the water logging well 100 is installed and fixed in the reservoir via the fixing block 1200.

[0105] In some embodiments, the flow port 120 is disposed opposite to the counterweight structure 400 .

[0106] In this embodiment, the arrangement positions of the flow opening 120 and the matching structure are further defined.

[0107] Specifically, the flow port 120 is arranged opposite to the counterweight structure 400, and the flow port 120 is located downstream of the water logging well 100. In this way, when the water level of the reservoir is low, the water flow can also effectively flow into the accommodating cavity 110 of the water logging well 100 through the flow port 120, so as to meet the use requirements of effectively detecting different water levels of the reservoir.

[0108] Optionally, the fixed block 1200 is fixed in the reservoir. The water logging well 100 is fixedly connected to the fixed block 1200 and arranged vertically. The support plate 1100 is on the water logging well 100. The measuring device 200 is fixed to the support plate 1100. The water level measuring disk 300 is rotatably connected to the measuring device 200. The cable 700 connects the water level measuring disk 300 and the movable pulley 500. The cable 700 is fixedly connected to the float 600. The elastic member 670 is fixed in the bellows 650. The one-way air inlet valve 800 is fixedly connected to the first cover plate 630 of the float 600 and is located at the top of the float 600. The air pipe 900 connects the working chamber 660 of the float 600 and the sealed chamber 410 of the counterweight structure 400. The counterweight structure 400 is provided with a one-way air outlet valve 1000. The movable pulley 500 is rotatably connected to the housing 440 of the counterweight structure 400. The one-way air outlet valve 1000 is fixedly connected to the housing 440 of the counterweight structure 400 and is located at the lowest point of the housing 440 of the counterweight structure 400. The counterweight portion 450 is fixedly connected to the housing 440 of the counterweight structure 400. The flow port 120 is located below the water logging well 100. The flow port 120 is located below the lowest historical water level of the reservoir and has a large cross-sectional area to prevent clogging.

[0109] When the operation starts, the float 600 is located at the horizontal plane and moves along with the fluctuation of the horizontal plane. The float 600 drives the water level measuring disc 300 to rotate, and the measuring device 200 records the water level information.

[0110] When waves appear in the reservoir, the water level in the water well 100 fluctuates suddenly. For example, when the water level rises, the buoyancy of the float 600 increases, compressing the elastic member 670, reducing the volume of the working chamber 660 of the float 600 and increasing the air pressure within the working chamber 660. At this point, the float 600 shortens, pulling the movable pulley 500 upward. Because the float 600 shortens, the movable pulley 500 moves upwards less, and the distance the water level measuring disc 300 is pulled downward by the right cable 700 decreases, reducing the error caused by water level fluctuations.

[0111] The increase in the internal air pressure of the float 600 will send the gas in the working chamber 660 of the float 600 into the sealed chamber 410 of the counterweight structure 400, and the air pressure in the sealed chamber 410 will increase.

[0112] When the pressure inside the sealed cavity 410 increases to a certain level, the one-way air outlet valve 1000 overcomes the water pressure and opens the one-way air outlet valve 1000 to discharge part of the gas in the sealed cavity 410 and also discharge the accumulated water in the sealed cavity 410.

[0113] When the water level rises, the one-way air outlet valve 1000 of the counterweight structure 400 becomes more difficult to open, and the stiffness of the bellows 650 increases, which reduces the shock-absorbing effect on the water, but can more promptly reflect the information of water level fluctuations when the reservoir is at a high water level.

[0114] The float 600 of the present invention is a retractable component. It includes a bellows 650 with a compression spring (i.e., elastic member 670) inserted within it. When the liquid level rises, the volume of the bellows 650 in contact with water increases, increasing buoyancy and driving the counterweight structure 400 and movable pulley 500 upward. The right-side wire rope (i.e., cable 700) barely moves, preventing the water level measuring disc 300 above from rotating and the measuring device 200 from registering the wave movement. This provides excellent shock absorption, shielding the measuring device 200 from the effects of short-term water level fluctuations caused by waves in the reservoir, and improving the accuracy of the water level detection device 10 for small and medium-sized reservoirs.

[0115] By providing the counterweight structure 400, the housing 440 of the counterweight structure 400 encloses the movable pulley 500, and the sealed chamber 410 of the housing 440 is filled with gas, thereby preventing the movable pulley 500 from being affected by impurities in the water and causing it to become stuck, thereby enabling the small and medium-sized reservoir water level detection device 10 to operate smoothly. Simultaneously, the bellows 650 expands and contracts under the influence of the waves, forcing the gas entering through the one-way air inlet valve 800 above the bellows 650 into the sealed chamber 410, preventing the sealed chamber 410 from deflating and gradually failing.

[0116] There is a one-way air outlet valve 1000 at the bottom of the shell 440 of the counterweight structure 400, which normally seals the sealed cavity 410 under the action of water pressure. When the bellows 650 inflates the sealed cavity 410 to a certain air pressure, part of the gas inside the sealed cavity 410 will be discharged through the one-way air outlet valve 1000, and at the same time, the water seepage in the sealed cavity 410 will be squeezed out.

[0117] When the water level rises, the one-way air outlet valve 1000 on the shell 440 is more difficult to open, making the bellows 650 more rigid, reducing the shock-absorbing effect on the water, and being able to reflect the information of water level fluctuations when the water level of the reservoir is high more promptly.

[0118] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A water level detection device for small and medium-sized reservoirs, characterized in that: include: A water logging well, wherein a receiving cavity is provided in the water logging well and a flow port is provided on the water logging well, the flow port being connected to the receiving cavity; The measuring device is located on one side of the water well; A water level measuring disc, the water level measuring disc being rotatably connected to the measuring device; A counterweight structure is located in the accommodating cavity, a sealed cavity is provided in the counterweight structure, a first opening and a second opening are provided on the counterweight structure, and the sealed cavity communicates with the first opening and the second opening; A movable pulley is located in the sealed cavity and is rotatably connected to the counterweight structure; A float is disposed in the accommodating chamber, the float being located between the measuring device and the counterweight structure, and the float being a retractable member; the float comprises a bellows and a first cover plate and a second cover plate disposed opposite each other, the bellows being connected between the first cover plate and the second cover plate, the first cover plate, the bellows and the second cover plate enclosing a working chamber, the elastic member being located in the working chamber and connected between the first cover plate and the second cover plate; a cable having a first end and a second end, the float being connected between the first end and the second end, the first end of the cable being connected to a first cover plate of the float, and the second end of the cable being connected to a second cover plate of the float; The first part of the cable extends out of the water logging well and is sheathed on the outside of the water level measuring disk. The second part of the cable extends into the sealed cavity through the first opening, bypasses the movable pulley and extends out of the counterweight structure through the second opening. When waves appear in the reservoir, the water level in the accommodating cavity changes suddenly. When the water level rises, the buoyancy of the float increases, and the float contracts to shorten the distance between the first end of the cable and the second end of the cable, thereby driving the counterweight structure and the movable pulley to move toward the measuring device, so that the water level measuring disk does not rotate; When the water level drops, the buoyancy of the float decreases, and the float expands to increase the distance between the first end of the cable and the second end of the cable, thereby driving the counterweight structure and the movable pulley to move away from the measuring device, so that the water level measuring disk does not rotate; The one-way air inlet valve is arranged on the side of the float away from the counterweight structure and is connected to the working chamber. The air pipe is connected between the float and the counterweight structure. The air pipe connects the working chamber and the sealing chamber. The one-way air outlet valve is arranged on the side of the counterweight structure away from the float.

2. The water level detection device for small and medium-sized reservoirs according to claim 1, characterized in that: The elastic member is spaced apart from the inner surface of the bellows.

3. The water level detection device for small and medium-sized reservoirs according to claim 2, characterized in that: The counterweight structure includes: A housing is provided with a first opening and a second opening, an inner surface of the housing encloses a sealed cavity, and the movable pulley is rotatably connected to the housing; The counterweight portion is located outside the shell and is connected to the shell.

4. The water level detection device for small and medium-sized reservoirs according to claim 3, characterized in that: The counterweight structure also includes: Two suspension rods are arranged at intervals, the counterweight is connected to the shell through the two suspension rods, and the one-way air outlet valve is located between the two suspension rods; The counterweight part includes a plurality of detachably connected counterweight blocks.

5. The water level detection device for small and medium-sized reservoirs according to any one of claims 1 to 4, characterized in that: One end of the water logging well has a third opening, and the first portion of the cable extends out of the water logging well through the third opening; The water level detection device for small and medium-sized reservoirs also includes a support plate, which is arranged at one end of the water measuring well having a third opening, and the support plate covers a part of the third opening. The measuring device is arranged on the side of the support plate away from the water measuring well, and the part of the water level measuring disk that cooperates with the cable protrudes out of the outer wall of the support plate.

6. The water level detection device for small and medium-sized reservoirs according to claim 1, characterized in that: Also includes: A fixed block is connected to the side of the water logging well away from the measuring device and is used for the installation and positioning of the water logging well; The flow port and the counterweight structure are arranged opposite to each other.

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