Small and medium-sized reservoir water level detection device

Abstract

The invention provides a small and medium-sized reservoir water level detection device, which comprises a water measuring well, a water level sensor, a water level sensor, a water level sensor, a water level sensor and a water level sensor, the measurer is positioned on one side of the water measuring well; the water level measuring disc is rotationally connected with the measurer; the balance weight structure is located in the containing cavity, and a sealing cavity is formed in the balance weight structure; the movable pulley is located in the sealing cavity and rotationally connected with the balance weight structure; the floater is arranged in the containing cavity, and the floater is a telescopic piece; the cable is wound on the outer sides of the water level measuring disc and the movable pulley; when buoyancy borne by the floater is increased, the floater shrinks to shorten the distance between the first end portion of the cable and the second end portion of the cable. And when the buoyancy borne by the floater is reduced, the floater is unfolded to increase the distance between the first end part of the cable and the second end part of the cable. The influence of short-time lifting of the water surface caused by waves in the reservoir on the measurer can be avoided, and the detection precision of the detection device is improved.

Description

Technical Field

[0001] The 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 in 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, and the float of the water level detection device will be affected, causing deviations in the detection results and 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: A water level detection device for small and medium-sized reservoirs comprises: a water well, a receiving cavity is provided in the water well, a flow port is provided on the water well, and the flow port is connected to the receiving cavity; a measuring device is located at one side of the water well; a water level measuring disk, and the water level measuring disk is rotatably connected to the measuring device; a counterweight structure is located in the receiving 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 is connected to the first opening and the second opening; a movable pulley is located in the sealed cavity, and the movable pulley is rotatably connected to the counterweight structure; a float is located in the receiving cavity, and the float is located between the measuring device 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.

[0005] In one embodiment, the float has a first end surface and a second end surface that are 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.

[0006] In one embodiment, the float includes: a first cover plate, the first cover plate has a first end surface; a second cover plate, the second cover plate has a second end surface; a bellows, the bellows is connected between the first cover plate and the second cover plate, and the first cover plate, the bellows and the second cover plate enclose a working chamber; an elastic member is located in the working chamber, and the elastic member is connected between the first cover plate and the second cover plate.

[0007] In one embodiment, the elastic member is spaced apart from the inner surface of the bellows.

[0008] In one of the embodiments, the water level detection device for small and medium-sized reservoirs also includes: a one-way air inlet valve, which is arranged 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 arranged on the counterweight structure, and connected to the sealing chamber.

[0009] In one embodiment, the one-way air inlet valve is arranged on a side of the float away from the counterweight structure, and the one-way air outlet valve is arranged on a side of the counterweight structure away from the float.

[0010] 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; and a counterweight part, which is located on the outside of the shell and is connected to the shell.

[0011] In one of the embodiments, the counterweight structure also 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.

[0012] In one of the embodiments, one end of the water measuring well has a third opening, and the first part of the cable extends out of the water measuring 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 measuring 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 measuring 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.

[0013] In one of the embodiments, the water level detection device for small and medium-sized reservoirs further includes: a fixed block, the fixed block is connected to a side of the water logging well away from the measuring device, and the fixed block is used for installation and positioning of the water logging well.

[0014] In some other embodiments, the flow port is arranged opposite to the counterweight structure.

[0015] 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 disc, a counterweight structure, a movable pulley, a float and a cable.

[0016] 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.

[0017] A containing cavity is arranged in the water measuring well, and a flow port is arranged on the water measuring well. The flow port is communicated with the containing cavity. Water in the reservoir can flow into the containing cavity through the flow port, and water in the containing cavity can also flow into the reservoir through the flow port.

[0018] The measuring device is located on one side of the water well, that is, the measuring device is located outside the water well. The water level measuring disk is rotatably connected to the measuring device, that is, the water level measuring disk can rotate relative to the measuring device. When the water level of the reservoir changes, the water level in the receiving chamber of the water well will also change accordingly, and the float will move with the liquid surface in the receiving chamber. The movement of the float can drive the water level measuring disk to rotate, and the measuring device can record the water level information according to the rotation data of the water level measuring disk to achieve the purpose of determining the water level.

[0019] The counterweight structure, movable pulley and float are all located in the accommodating chamber of the water logging well. A sealed chamber is provided in the counterweight structure, and the movable pulley is located in the sealed chamber. The movable pulley is rotatably connected to the counterweight structure, that is, the movable pulley can rotate relative to the counterweight structure.

[0020] 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. The float is located between the measuring device and the counterweight structure. It can be understood that the cable includes a first part, a second part, a third part and a fourth part, and the third part and the fourth part are both connected between the first part and the second part, and the third part and the fourth part are arranged at intervals. One of the third part and the fourth part has a first end and a second end, that is, the float is connected to the third part of the cable, or the float is connected to the fourth part of the cable.

[0021] Specifically, when waves appear in the reservoir, the water level of the accommodating chamber in the water measuring well changes suddenly. Take the rising water level and the connection of the float to the third part of the cable as an example. When the water level rises, the volume of the float in contact with the water 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, so as to drive the counterweight structure and the movable pulley to move toward the measuring device. Among them, the float is located between the measuring device and the counterweight structure, and the float is connected to the third part of the cable. Therefore, the fourth part of the cable hardly moves. In this way, the water level measuring disk does not rotate, and the measuring device does not record the fluctuation of the wave. It has a good shock-absorbing effect, 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, and is conducive to reducing the detection error of the water level detection device of small and medium-sized reservoirs, and is conducive to improving the detection precision and accuracy of the water level detection device of small and medium-sized reservoirs.

[0022] 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 accordingly, the float will move with the liquid surface in the containing chamber, and under the influence of the gravity of the counterweight structure, the fourth part of the cable will gradually move, so that the water level measuring disk will rotate accordingly, and the measuring device will also record the water level information accordingly.

[0023] Specifically, when waves appear in the reservoir, the water level of the accommodating chamber in the water measuring well changes suddenly. Take the case where the water level drops and the float is connected to the third part of the cable as an example. When the water level drops, the volume of the float in contact with the water decreases, 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, so as to drive the counterweight structure and the movable pulley to move in the direction away from the measuring device. Among them, the float is located between the measuring device and the counterweight structure, and the float is connected to the third part of the cable. Therefore, the fourth part of the cable hardly moves. In this way, the water level measuring disk does not rotate, and the measuring device does not record the fluctuation of the wave. It has a good shock-absorbing effect, 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, and is conducive to reducing the detection error of the water level detection device of small and medium-sized reservoirs, and is conducive to improving the detection precision and accuracy of the water level detection device of small and medium-sized reservoirs.

[0024] It is understandable that when the water level of the reservoir really drops, the water level in the containing chamber of the water measuring well will also drop, the float will move with the liquid surface in the containing chamber, and under the influence of the gravity of the counterweight structure, the fourth part of the cable will gradually move, so that the water level measuring disk will rotate and the measuring device will record the water level information accordingly.

[0025] 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.

[0026] That is to say, the present invention reasonably 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 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.

[0027] 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

[0028] Figure 1 It is a structural schematic diagram of a first-viewing angle of view of a water level detection device for small and medium-sized reservoirs according to an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of the water level detection device for small and medium-sized reservoirs shown; Figure 3 It is a structural schematic diagram of a second viewing angle of a small and medium-sized reservoir water level detection device according to an embodiment of the present invention; Figure 4 It is a structural schematic 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; Figure 5 for Figure 4 A partial enlarged view of location B of the water level detection device for small and medium-sized reservoirs shown; 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; Figure 7 for Figure 6 A partial enlarged view of location C of the water level detection device for small and medium-sized reservoirs shown; Figure 8 for Figure 6 The enlarged view of the part D of the water level detection device for small and medium-sized reservoirs is shown.

[0029] Wherein: 10 small and medium-sized reservoir water level detection device, 100 water well, 110 receiving chamber, 120 flow outlet, 130 third opening, 200 measuring device, 300 water level measuring plate, 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 face Surface, 630 first cover plate, 640 second cover plate, 650 bellows, 660 working chamber, 670 elastic member, 700 cable, 710 first end, 720 second end, 730 first part, 740 second part, 750 third part, 760 fourth part, 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

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is 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 used to limit the present invention.

[0031] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] 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.

[0034] 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 well 100, wherein a receiving chamber 110 is provided in the water well 100, and a flow port 120 is provided on the water well 100, and the flow port 120 is connected to the receiving chamber 110; a measuring device 200, which is located on one side of the water well 100; a water level measuring disk 300, which is rotatably connected to the measuring device 200; a counterweight structure 400, which is 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, which is located in the sealed chamber 410, and the movable pulley 500 is rotatably connected to the counterweight structure 400; a float 600, which is 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 part 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 part 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 of 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 of 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.

[0035] 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 disc 300 , a counterweight structure 400 , a movable pulley 500 , a float 600 and a cable 700 .

[0036] 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 structure.

[0037] A containing cavity 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 with the containing cavity 110 . Water in the reservoir can flow into the containing cavity 110 through the flow port 120 , and water in the containing cavity 110 can also flow into the reservoir through the flow port 120 .

[0038] The measuring device 200 is located at one side of the water well 100, that is, the measuring device 200 is located outside the water well 100. The water level measuring disk 300 is rotatably connected to the measuring device 200, that is, the water level measuring disk 300 can rotate relative to the measuring device 200. When the water level of the reservoir changes, the water level in the accommodating chamber 110 of the water well 100 will also change accordingly, and the float 600 will move with the liquid surface in the accommodating chamber 110. The movement of the float 600 can drive the water level measuring disk 300 to rotate, and the measuring device 200 can record the water level information according to the rotation data of the water level measuring disk 300 to achieve the purpose of determining the water level.

[0039] The counterweight structure 400, the movable pulley 500 and the float 600 are all located in the accommodating chamber 110 of the water logging well 100. A sealed chamber 410 is provided in the counterweight structure 400, and the movable pulley 500 is located in 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.

[0040] The first part 730 of the cable 700 extends out of the water well 100 and is sleeved on the outer side of the water level measuring disc 300. The second part 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. The float 600 is located between the measuring device 200 and the counterweight structure 400. It can be understood that the cable 700 includes a first part 730, a second part 740, a third part 750 and a fourth part 760, and the third part 750 and the fourth part 760 are both connected between the first part 730 and the second part 740, and the third part 750 and the fourth part 760 are arranged at intervals. One of the third part 750 and the fourth part 760 has a first end 710 and a second end 720, that is, the float 600 is connected to the third part 750 of the cable 700, or the float 600 is connected to the fourth part 760 of the cable 700.

[0041] Specifically, when waves appear in the reservoir, the water level of the accommodating chamber 110 in the water logging well 100 changes suddenly. Taking the case where the water level rises and the float 600 is connected to the third portion 750 of the cable 700 as an example, when the water level rises, the volume of the float 600 in contact with water increases, the buoyancy of the float 600 increases, and 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, so as to drive the counterweight structure 400 and the movable pulley 500 to move toward the direction of 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 does 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 reduce the detection error of the water level detection device 10 for small and medium-sized reservoirs, and is beneficial to improve the detection precision and accuracy of the water level detection device 10 for small and medium-sized reservoirs.

[0042] It is understandable that when the water level of the reservoir really rises, the water level in the containing chamber 110 of the water measuring well 100 will also rise accordingly, and the float 600 will move with the liquid surface in the containing chamber 110. Under the influence of the gravity of the counterweight structure 400, the fourth part 760 of the cable 700 will gradually move, so that the water level measuring disk 300 will rotate accordingly, and the measuring device 200 will also record the water level information accordingly.

[0043] Specifically, when waves appear in the reservoir, the water level of the accommodating chamber 110 in the water logging well 100 changes suddenly. Taking the case where the water level drops and the float 600 is connected to the third portion 750 of the cable 700 as an example, when the water level drops, the volume of the float 600 in contact with water decreases, the buoyancy of the float 600 decreases, and the float 600 is expanded to increase the distance between the first end 710 of the cable 700 and the second end 720 of the cable 700, so as to drive the counterweight structure 400 and the movable pulley 500 to move in a direction 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 does 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 reduce the detection error of the water level detection device 10 for small and medium-sized reservoirs, and is beneficial to improve the detection precision and accuracy of the water level detection device 10 for small and medium-sized reservoirs.

[0044] It is understandable that when the water level of the reservoir really drops, the water level in the containing chamber 110 of the water measuring well 100 will also drop, and the float 600 will move with the liquid surface in the containing chamber 110. Affected by the gravity of the counterweight structure 400, the fourth part 760 of the cable 700 will gradually move, so that the water level measuring disk 300 will rotate accordingly, and the measuring device 200 will also record the water level information accordingly.

[0045] 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 agitation of the cable 700 caused by water flow movement, 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.

[0046] That is to say, 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.

[0047] 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 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.

[0048] In some embodiments, Figure 6 and Figure 7 As shown, the float 600 has a first end surface 610 and a second end surface 620 disposed 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 .

[0049] In this embodiment, the matching structure of the float 600 and the cable 700 is further defined.

[0050] Specifically, the float 600 has a first end surface 610 and a second end surface 620, which are arranged opposite to each other 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.

[0051] This arrangement increases the length of the portion of the float 600 between the first end 710 of the cable 700 and the second end 720 of the cable 700. Thus, when the float 600 expands or contracts, the distance between the first end 710 of the cable 700 and the second end 720 of the cable 700 changes greatly, 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.

[0052] In some other embodiments, the second end 720 of the cable 700 is connected to a side of the float 600 .

[0053] In some embodiments, Figure 6 and Figure 7 As shown, the float 600 includes: a first cover plate 630, the first cover plate 630 has a first end surface 610; a second cover plate 640, the second cover plate 640 has a second end surface 620; a bellows 650, the bellows 650 is 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; an elastic member 670, located in the working chamber 660, and the elastic member 670 is connected between the first cover plate 630 and the second cover plate 640.

[0054] 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.

[0055] The first end 710 of the cable 700 is connected to the first cover plate 630 . The second end 720 of the cable 700 is connected to the second cover plate 640 .

[0056] 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 of the cable 700 and the second end 720 of the cable 700 is also reduced accordingly.

[0057] 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 reset accordingly. The reset of the elastic member 670 can drive the bellows 650 to reset to increase 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 accordingly.

[0058] 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.

[0059] In some embodiments, the elastic member 670 is spaced apart from the inner surface of the bellows 650 .

[0060] In this embodiment, the matching structure of the elastic member 670 and the bellows 650 is further defined.

[0061] 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 is expanded or contracted, the elastic member 670 will not interfere with the bellows 650, so that the bellows 650 can be effectively expanded or contracted.

[0062] 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.

[0063] In some embodiments, 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, which is connected between the float 600 and the counterweight structure 400, and 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.

[0064] In this embodiment, the structure of the water level detection device 10 for small and medium-sized reservoirs is further defined.

[0065] 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 .

[0066] The one-way air inlet valve 800 is disposed on the float 600 and communicates 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.

[0067] The one-way gas outlet valve 1000 is disposed on the counterweight structure 400, and the one-way gas outlet valve 1000 is connected to 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, and the gas in the environment cannot enter the sealed cavity 410 through the one-way gas outlet valve 1000.

[0068] 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 .

[0069] When the air pressure in the working chamber 660 of the float 600 increases, the gas in the working chamber 660 can flow to the sealed chamber 410 of the counterweight structure 400 through the air pipe 900. When the pressure in the sealed chamber 410 increases to a preset value, the one-way air outlet valve 1000 will overcome the water pressure and be opened, and a part of the gas in the sealed chamber 410 can 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 driven by the gas.

[0070] It is understandable that the movable pulley 500 is located in 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, so that the movable pulley 500 can be prevented from being affected by impurities in the water and getting stuck, and the movable pulley 500 can be ensured to rotate smoothly and effectively. At the same time, when the bellows 650 expands and contracts under the drive of the waves, the gas entering the working cavity 660 from the one-way air inlet valve 800 of the bellows 650 will be pushed into the sealed cavity 410, so as to prevent the sealed cavity 410 from being deflated and gradually failing.

[0071] 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.

[0072] 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 .

[0073] In this embodiment, the installation positions of the one-way air inlet valve 800 and the one-way air outlet valve 1000 are further limited.

[0074] 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 surface 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.

[0075] 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.

[0076] 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 having a poor shock absorption effect due to excessive rigidity.

[0077] In some embodiments, Figure 6 and Figure 8 As shown, the counterweight structure 400 includes: a shell 440, on which a first opening 420 and a second opening 430 are provided, the inner surface of the shell 440 encloses a sealed cavity 410, and the movable pulley 500 is rotatably connected to the shell 440; and a counterweight part 450, which is located on the outside of the shell 440 and is connected to the shell 440.

[0078] In this embodiment, the component structure of the counterweight structure 400 is further defined.

[0079] Specifically, the counterweight structure 400 includes a housing 440 and a counterweight portion 450 .

[0080] 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, and the sealed cavity 410 communicates with the first opening 420 and the second opening 430. The movable pulley 500 is located in the housing 440. The housing 440 has the function of protecting the movable pulley 500 and providing 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.

[0081] The counterweight part 450 is located outside the housing 440, and the counterweight part 450 is connected to the housing 440. The counterweight part 450 pulls the cable 700 downward under the action of gravity, so that the portion of the cable 700 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 agitated due to the movement of water flow.

[0082] 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.

[0083] In some embodiments, Figure 6 and Figure 8 As shown, the counterweight structure 400 also includes: two suspension rods 460, the two suspension rods 460 are arranged at intervals, the counterweight part 450 is connected to the shell 440 through the two suspension rods 460, and the one-way air outlet valve 1000 is located between the two suspension rods 460; the counterweight part 450 includes a plurality of detachably connected counterweight blocks 452.

[0084] In this embodiment, the component structure of the counterweight structure 400 is further defined.

[0085] Specifically, the counterweight structure 400 further includes two suspension rods 460. The two suspension rods 460 are arranged at intervals, and each suspension rod 460 is connected between the counterweight part 450 and the shell 440, that is, the counterweight part 450 is connected to the shell 440 through the two suspension rods 460. It can also be said that the counterweight part 450 is suspended on one side of the shell 440 through the two suspension rods 460.

[0086] 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 sealing cavity 410 are effectively discharged under the action of pressure.

[0087] Furthermore, the counterweight part 450 includes a plurality of detachably connected counterweight blocks 452. That is, the number of counterweight blocks 452 can be adjusted according to specific actual use requirements, such as increasing the number of counterweight blocks 452 or reducing the number of counterweight blocks 452. This setting can meet the use requirements under various working conditions.

[0088] In some embodiments, 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.

[0089] In this embodiment, the water level detection device 10 for small and medium-sized reservoirs further includes a support plate 1100 .

[0090] One end of the water logging well 100 has a third opening 130, and 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.

[0091] The measuring device 200 is arranged on the side of the supporting plate 1100 away from the water measuring well 100. The supporting 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 measuring 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.

[0092] 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 against 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.

[0093] 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 escape opening, through which the first part 730 of the cable 700 extends out of the support plate 1100 and is sleeved on the outer side of the water level measuring disk 300 .

[0094] In some embodiments, Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the water level detection device 10 for small and medium-sized reservoirs also includes: a fixed block 1200 , which is connected to the side of the water logging well 100 away from the measuring device 200 , and is used for installing and positioning the water logging well 100 .

[0095] In this embodiment, the structure of the water level detection device 10 for small and medium-sized reservoirs is further defined.

[0096] 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 well 100 away from the measuring device 200. The fixing block 1200 is used for installing and positioning the water well 100, that is, the water well 100 is installed and fixed in the reservoir through the fixing block 1200.

[0097] In some embodiments, the flow port 120 is disposed opposite to the counterweight structure 400 .

[0098] In this embodiment, the arrangement positions of the flow opening 120 and the matching structure are further defined.

[0099] 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 to meet the use requirements of effectively detecting different water levels of the reservoir.

[0100] Optionally, the fixed block 1200 is fixed in the reservoir. The water logging well 100 is fixedly connected to the fixed block 1200, and the water logging well 100 is arranged vertically. The support plate 1100 is on the water logging well 100. The measuring device 200 is fixed on the support plate 1100. The water level measuring disc 300 is rotatably connected to the measuring device 200. The cable 700 connects the water level measuring disc 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 the one-way air inlet valve 800 is at the top of the float 600. The air pipe 900 communicates the working chamber 660 of the float 600 and the sealing 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 the one-way air outlet valve 1000 is located at the bottom of the housing 440 of the counterweight structure 400. The counterweight part 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, and the flow port 120 is located below the lowest historical water level of the reservoir. The cross-sectional area of ​​the flow port 120 is large to avoid blockage.

[0101] When the work starts, the float 600 is located at the horizontal plane and moves along with the ups and downs 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.

[0102] When waves appear in the reservoir, the water level of the water well 100 changes suddenly. For example, when the water level rises, the buoyancy of the float 600 increases, and the elastic member 670 is compressed, so that the volume of the working chamber 660 of the float 600 decreases, and the air pressure in the working chamber 660 increases. At this time, the length of the float 600 shortens, and the movable pulley 500 is pulled up. Since the length of the float 600 shortens, the distance that the movable pulley 500 moves up becomes smaller, and the distance that the water level measuring disc 300 is pulled downward by the right cable 700 becomes smaller, thereby reducing the error caused by the water level fluctuation.

[0103] 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.

[0104] 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 .

[0105] When the water level rises, the one-way air outlet valve 1000 of the counterweight structure 400 is more difficult to open, and the rigidity of the bellows 650 increases, which reduces the shock-absorbing effect on the water, but can reflect the information of water level fluctuations when the water level of the reservoir is high more promptly.

[0106] The float 600 of the present invention is a retractable part, and the float 600 includes a bellows 650, and a compression spring (i.e., an elastic part 670) is added inside the bellows 650. When the liquid level rises, the volume of the bellows 650 in contact with water increases, the buoyancy increases, and the counterweight structure 400 and the movable pulley 500 rise, while the steel wire rope (i.e., the cable 700) on the right side hardly moves, so that the water level measuring disk 300 above does not rotate, and the measuring device 200 does not record the movement of the wave. It has a good shock absorption effect, 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, and increase the detection accuracy of the water level detection device 10 for small and medium-sized reservoirs.

[0107] By setting the counterweight structure 400, the housing 440 of the counterweight structure 400 wraps the movable pulley 500, and the sealed cavity 410 of the housing 440 is filled with gas, so that the movable pulley 500 is prevented from being affected by impurities in the water and getting stuck, so that the water level detection device 10 for small and medium-sized reservoirs can work smoothly. At the same time, the bellows 650 expands and contracts under the drive of the waves, and the gas entering from the one-way air inlet valve 800 above the bellows 650 is pressed into the sealed cavity 410, so as to prevent the sealed cavity 410 from being deflated and gradually failing.

[0108] 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 increase the air pressure to a certain level, a portion 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.

[0109] 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 more timely reflect the information of water level fluctuations when the water level of the reservoir is high.

[0110] The technical features of the above embodiments may 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.

[0111] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A water level detection device (10) for small and medium-sized reservoirs, characterized in that: include: A water logging well (100), wherein a receiving chamber (110) is provided in the water logging well (100), and a flow port (120) is provided on the water logging well (100), wherein 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 disc (300), the water level measuring disc (300) being rotatably connected to the measuring device (200); A counterweight structure (400) is located in the accommodating cavity (110), a sealed cavity (410) is provided in the counterweight structure (400), a first opening (420) and a second opening (430) are provided on the counterweight structure (400), and the sealed cavity (410) is in communication with the first opening (420) and the second opening (430); A movable pulley (500) is located in the sealed cavity (410), and the movable pulley (500) is rotatably connected to the counterweight structure (400); A float (600) is disposed in the accommodating chamber (110); the float (600) is located between the measuring device (200) and the counterweight structure (400); the float (600) is a retractable component; A cable (700), the cable (700) having a first end (710) and a second end (720), the float (600) being 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); 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).

2. The water level detection device (10) for small and medium-sized reservoirs according to claim 1, characterized in that: The float (600) has a first end surface (610) and a second end surface (620) that are arranged 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).

3. The water level detection device (10) for small and medium-sized reservoirs according to claim 2, characterized in that: The float (600) comprises: A first cover plate (630), wherein the first cover plate (630) has the first end surface (610); A second cover plate (640), the second cover plate (640) having the second end surface (620); a bellows (650), the bellows (650) being 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) enclosing a working chamber (660); An elastic member (670) is located in the working chamber (660), and the elastic member (670) is connected between the first cover plate (630) and the second cover plate (640).

4. The water level detection device (10) for small and medium-sized reservoirs according to claim 3, characterized in that: The elastic member (670) is spaced apart from the inner surface of the bellows (650).

5. The water level detection device (10) for small and medium-sized reservoirs according to claim 3, characterized in that: Also includes: A one-way air intake valve (800) is provided on the float (600), and the one-way air intake valve (800) is in communication with the working chamber (660); an air pipe (900), the air pipe (900) being connected between the float (600) and the counterweight structure (400), the air pipe (900) being in communication with the working chamber (660), and the air pipe (900) being in communication with the sealing chamber (410); A one-way air outlet valve (1000) is provided on the counterweight structure (400), and the one-way air outlet valve (1000) is in communication with the sealed cavity (410).

6. The water level detection device (10) for small and medium-sized reservoirs according to claim 5, characterized in that: The one-way air inlet valve (800) is arranged on a side of the float (600) away from the counterweight structure (400), and the one-way air outlet valve (1000) is arranged on a side of the counterweight structure (400) away from the float (600).

7. The water level detection device (10) for small and medium-sized reservoirs according to claim 5, characterized in that: The counterweight structure (400) comprises: a shell (440), the shell (440) being provided with the first opening (420) and the second opening (430), the inner surface of the shell (440) enclosing the sealed cavity (410), and the movable pulley (500) being rotatably connected to the shell (440); The counterweight portion (450) is located outside the shell (440), and the counterweight portion (450) is connected to the shell (440).

8. The water level detection device (10) for small and medium-sized reservoirs according to claim 7, characterized in that: The counterweight structure (400) further includes: two suspension rods (460), the two suspension rods (460) being arranged at intervals, the counterweight portion (450) being connected to the housing (440) via the two suspension rods (460), and the one-way air outlet valve (1000) being located between the two suspension rods (460); The counterweight portion (450) comprises a plurality of detachably connected counterweight blocks (452).

9. The water level detection device (10) for small and medium-sized reservoirs according to any one of claims 1 to 8, characterized in that: One end of the water logging well (100) has a third opening (130), and the first portion (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 further comprises a support plate (1100), wherein the support plate (1100) is arranged at one 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 measuring device (200) is arranged on a side of the support plate (1100) away from the water logging well (100), and a portion 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.

10. The water level detection device (10) for small and medium-sized reservoirs according to any one of claims 1 to 3, characterized in that: Also includes: a fixing block (1200), the fixing block (1200) being connected to a side of the water logging well (100) facing away from the measuring device (200), the fixing block (1200) being used for installing and positioning the water logging well (100); The flow port (120) is arranged opposite to the counterweight structure (400).

Images