A follow-up type transient fluctuation suppression compensation device for water level monitoring

Abstract

The present invention provides a follow-up type transient fluctuation suppression compensation device for water level monitoring, comprising: a windbreak well installed in a water body, the windbreak well communicating the water body outside the well and the water body inside the well, and a liquid level measuring instrument installed on the windbreak well; a housing fixed inside the windbreak well, the housing being a sealed structure; a water storage mechanism installed inside the housing, the water storage mechanism penetrating through the housing and the windbreak well and communicating the water body outside the well and the water body inside the well; the water storage mechanism includes a water storage bladder, the water storage bladder being a contracted elastic bladder in a free state, and the surging water body is pressed into the water storage bladder due to the change in water pressure, causing the water storage bladder to expand. When there is a surge, the water flow surges into the water storage bladder, and the water storage bladder expands and stores water due to the sudden change in water pressure, eliminating part of the surge impact; when the water wave subsides, the water storage bladder squeezes out the water it stores and discharges it to the measured water surface, thereby reducing the impact of the surge on the water surface fluctuation inside the well.

Description

Technical Field

[0001] The present invention belongs to the technical field of environmental monitoring, and particularly relates to a follow-up type transient fluctuation suppression compensation device for water level monitoring. Background Art

[0002] In water level measurement, since the water surface generates waves under the influence of wind, whether using a float water level gauge, a radar water level gauge or other types of water level gauges, the measured water level value cannot truly reflect the elevation of the current water level.

[0003] For example, the patent with the publication number CN208751660U discloses a liquid level measurement device, which includes a fixing member, a cylinder body and a detection wave measuring device. The fixing member includes a first part that is higher than the sewage liquid level and a second part that is connected to the first part and extends into the sewage; the cylinder body is suspended in the sewage between the second parts, and the side wall of the cylinder body can bear the impact force brought by the fluctuation of the sewage; the detection wave measuring device is arranged on one side of the first part facing the sewage water surface and is used to detect the liquid level height of the sewage in the cylinder body. This liquid level measurement device can effectively block foam and also resist a certain amount of surges, ensuring the stability of liquid level measurement.

[0004] However, this device only bears the impact force brought by the sewage fluctuation through the side wall of the cylinder body, and has a low ability to suppress surges, and the accuracy of the measurement result needs to be improved. Summary of the Invention

[0005] The purpose of the present invention is to provide a follow-up type transient fluctuation suppression compensation device for water level monitoring to solve the problem that surges affect the measurement result in water level measurement.

[0006] The present invention provides the following technical solutions:

[0007] A follow-up type transient fluctuation suppression compensation device for water level monitoring, comprising:

[0008] A windbreak well, installed in the water body, the windbreak well communicates the water body outside the well and the water body inside the well, and a liquid level measuring instrument is installed on the windbreak well;

[0009] A housing, fixed inside the windbreak well, the housing is a sealed structure;

[0010] A water storage mechanism, installed inside the housing, the water storage mechanism penetrates through the housing and the windbreak well and communicates the water body outside the well and the water body inside the well; the water storage mechanism includes a water storage bladder, the water storage bladder is a shrinkable elastic bladder in a free state, and the surging water body is pressed into the water storage bladder due to the change in water pressure, causing the water storage bladder to expand.

[0011] Preferably, the water storage mechanism further includes a water inlet pipe, a buffer pipe, and a water outlet pipe connected in sequence; the head end of the water inlet pipe extends outside the housing and the windproof well, the tail end of the water inlet pipe is tightly sleeved on the water storage bladder, the buffer pipe is spirally coiled, and the water outlet pipe extends outside the housing and communicates with the water body in the well.

[0012] Preferably, the water storage bladder includes a bladder belly and a bladder waist; the bladder belly is in a folded accordion pleat shape in the free state; the bladder waist connects two adjacent bladder bellies; the bladder waist is retracted relative to the bladder belly; the bladder belly at the frontmost side is provided with a sleeve opening, and the sleeve opening is tightly sleeved on the water inlet pipe.

[0013] Furthermore, a surge suppression mechanism is installed outside the windproof well for suppressing the surge of the water body outside the well and pressing the water body into the water storage mechanism; the surge suppression mechanism includes a pressure plate, a first connecting rod, a second connecting rod, a transmission rod, and a transmission shaft; the pressure plate floats on the water surface, a kidney-shaped hole is provided at the left end of the pressure plate, the first connecting rod is pivotally connected in the kidney-shaped hole, and the other end of the first connecting rod is fixedly connected to the transmission shaft; the right end of the pressure plate is hinged to the second connecting rod, the other end of the second connecting rod is hinged to the transmission rod, and the other end of the transmission rod is also fixedly connected to the transmission shaft; the first connecting rod and the second connecting rod are cross-arranged; when the water body outside the well fluctuates up and down, the pressure plate swings and presses down the surging water surface to suppress the fluctuation.

[0014] Preferably, a vertical first guiding hole is provided on the windproof well; the root of the transmission shaft is installed in the first guiding hole and floats up and down along the first guiding hole.

[0015] Preferably, a rotating shaft is installed in the middle of the pressure plate, the rotating shaft is parallel to the transmission shaft, and the pressure plate swings with the rotating shaft as the pivot point; a vertical second guiding hole is provided on the windproof well, the root of the rotating shaft is installed in the second guiding hole and floats up and down along the second guiding hole.

[0016] Preferably, the first connecting rod, the second connecting rod, and the transmission rod form a set of transmission components, and at least one set of the transmission components is installed on each of the front and rear sides of the pressure plate.

[0017] Preferably, a conical guiding part is provided at the front end of the pressure plate for reducing wind resistance.

[0018] The beneficial effects of the present invention are:

[0019] In the present invention, a housing is installed in a windbreak well, and a water storage structure is installed inside the housing. The water storage structure connects the water body outside the well and the water body inside the well, and the water storage structure includes a retractable water storage bladder. When there is a surge, the water flow surges into the water storage bladder, and the water storage bladder expands and stores water due to the sudden change in water pressure, eliminating part of the surge impact. When the water wave subsides and the water surface is at a low ebb, the shape memory function of the water storage bladder squeezes out the stored water and discharges it to the measured water surface, thereby reducing the influence of the surge on the water surface fluctuation inside the well. The water storage bladder reduces the amplitude of the water surface fluctuation by absorbing the water flow.

[0020] The water storage mechanism further includes a buffer pipe coiled in a spiral shape. When the water surface continuously rises, the water flow passes through the buffer pipe in a spiral and flows into the windbreak well, causing the fluctuation of the water body outside the well to be transmitted to the water body inside the well with a delay. The high-frequency fluctuation of the water body outside the well is transformed into the low-frequency fluctuation of the water body inside the well, further improving the problem of the water level height fluctuation of the water body inside the well.

[0021] The device is floatingly installed with a surge suppression mechanism on the outside of the windbreak well for suppressing the surge of the water body outside the well and pressing the water body into the water storage mechanism. The surge suppression mechanism includes a pressing plate, a first connecting rod, a second connecting rod, a transmission rod, and a transmission shaft. The pressing plate floats on the water surface. The left and right ends of the pressing plate are hinged with the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod are cross-set. The other end of the first connecting rod is fixedly connected to the transmission shaft, the other end of the second connecting rod is hinged with the transmission rod, and the other end of the transmission rod is also fixedly connected to the transmission shaft. When the water body outside the well fluctuates up and down, the pressing plate swings through the first connecting rod, the second connecting rod, the transmission rod, and the transmission shaft. The swinging direction of the pressing plate is opposite to the direction of the water surface fluctuation. Therefore, the pressing plate presses down the surging water surface to suppress the fluctuation, and increases the water pressure at the place near the water inlet pipe outside the well, more effectively pressing the water pressure into the water inlet pipe and the water storage bladder, increasing the water storage capacity of the water storage bladder, that is, further reducing the amplitude of the water surface fluctuation. Description of the Drawings

[0022] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0023] Figure 1 is the schematic structural diagram of Embodiment 1 of the present invention;

[0024] Figure 2 is the schematic internal structure diagram of the water storage mechanism of the present invention;

[0025] Figure 3 is the schematic structural diagram of Embodiment 2 of the present invention;

[0026] Figure 4 is Figure 3 the left view structural diagram of

[0027] Figure 5Schematic diagram of the surge suppression mechanism before the wave crest reaches the left side of the pressing plate;

[0028] Figure 6 Schematic diagram when the left side of the pressing plate is lifted by the wave crest;

[0029] Figure 7 Schematic diagram when the left side of the pressing plate presses down on the water surface;

[0030] Figure 8 Schematic diagram of the surge suppression mechanism before the wave crest reaches the right side of the pressing plate;

[0031] Figure 9 Schematic diagram when the right side of the pressing plate is lifted by the wave crest;

[0032] Figure 10 Schematic diagram when the right side of the pressing plate presses down on the water surface.

[0033] In the figure, the markings are: 1. Wind prevention well; 2. Housing; 3. Water body outside the well; 4. Water body inside the well; 5. Liquid level measuring instrument; 6. Water storage bladder; 7. Water inlet pipe; 8. Buffer pipe; 9. Water outlet pipe; 10. Bladder belly; 11. Bladder waist; 12. Sleeve opening; 13. Pressing plate; 14. First connecting rod; 15. Second connecting rod; 16. Transmission rod; 17. Transmission shaft; 18. Strip-shaped groove; 19. First guiding hole; 20. Rotating shaft; 21. Second guiding hole; 22. Flow guiding part; 23. Waist-shaped hole. Detailed implementation method

[0034] Example 1

[0035] As Figure 1 and Figure 2 shown, a follow-up type transient fluctuation compensation device for water level monitoring includes: a wind prevention well 1, a housing 2, and a water storage mechanism.

[0036] The wind prevention well 1 is installed in the water body. The wind prevention well 1 communicates the water body 3 outside the well and the water body 4 inside the well. A liquid level measuring instrument 5, such as a radar water level gauge or other instruments capable of measuring the water level, is installed on the wind prevention well 1, and the probe of the liquid level measuring instrument 5 faces downward.

[0037] The housing 2 is fixedly installed inside the wind prevention well 1. The housing 2 is a sealed structure, and there is a cavity inside the housing 2. The housing 2 is made of rust-proof material.

[0038] The water storage mechanism is installed inside the housing 2. The water storage mechanism penetrates through the housing 2 and the windproof well 1, and connects the water body 3 outside the well and the water body 4 inside the well. Specifically, the water storage mechanism includes a water storage bladder 6 and a water inlet pipe 7, a buffer pipe 8, and a water outlet pipe 9 connected in sequence. The water inlet pipe 7 is a tee pipe. The head end of the water inlet pipe 7 extends outside the housing 2 and the windproof well 1, and the tail end of the water inlet pipe 7 is tightly sleeved on the water storage bladder 6; the buffer pipe 8 is installed on the third interface of the water inlet pipe 7, and the buffer pipe 8 is spirally coiled. The water outlet pipe 9 extends outside the housing 2 and communicates with the water body inside the well.

[0039] The water storage bladder 6 is a contracted elastic bladder in its free state. The surging water body is pressed into the water storage bladder 6 due to the change in water pressure, causing the water storage bladder 6 to expand and store a part of the water.

[0040] Specifically, the water storage bladder 6 includes a bladder belly 10 and a bladder waist 11. The bladder belly 10 is in a folded accordion pleat shape in its free state. The bladder waist 11 connects two adjacent bladder bellies 10. The bladder waist 11 is retracted relative to the bladder belly 10. The bladder belly 10 at the frontmost side is provided with a sleeve opening 12, and the sleeve opening 12 is tightly sleeved on the water inlet pipe 7. The number of bladder bellies 10 can be multiple, and two are selected in this embodiment.

[0041] When there is a surge outside the well, the water flow surges into the water storage bladder 6. The water storage bladder 6 expands and stores water due to the sudden change in water pressure, eliminating part of the surge impact; when the water wave subsides and the water surface is at a low point, the shape memory function of the water storage bladder 6 squeezes out the stored water and discharges it to the measured water surface, thereby reducing the impact of the surge on the water surface fluctuation inside the well. The water storage bladder 6 reduces the amplitude of the water surface fluctuation due to absorbing the water flow and squeezing out the stored water.

[0042] The spiral coiled buffer pipe 8 is connected to the water inlet pipe 7. When the water surface continuously rises, the water flow passes through the buffer pipe 8 in a spiral and flows into the windproof well 1, causing the fluctuation of the water body 3 outside the well to be transmitted to the water body 4 inside the well with a delay. The high-frequency fluctuation of the water body 3 outside the well is transformed into the low-frequency fluctuation of the water body 4 inside the well, further improving the problem of the water level height fluctuation of the water body 4 inside the well.

[0043] This embodiment reduces the impact of the surge on the water surface height measurement in both the amplitude and frequency of the water surface fluctuation, improves the accuracy of the measurement result, and has a simple structure without adding complex electrical control equipment. It is easy to install and suitable for underwater use.

[0044] Embodiment 2

[0045] As Figures 3 to 10 shown, based on Embodiment 1, this embodiment is provided with a surge suppression mechanism for suppressing the surge of the water body outside the well and pressing the water body into the water storage mechanism. The surge suppression mechanism is floatingly installed on the outside of the windproof well 1 to adapt to different water surface heights.

[0046] As Figure 3 andFigure 4 As shown, the surge suppression mechanism is installed above and close to the water inlet pipe 7. The surge suppression mechanism includes a pressing plate 13, a first connecting rod 14, a second connecting rod 15, a transmission rod 16, and a transmission shaft 17. The pressing plate 13 floats on the water surface. A horizontal waist-shaped hole 23 is provided at the left end of the pressing plate 13. The first connecting rod 14 is pivotally connected within the waist-shaped hole 23. The other end of the first connecting rod 14 is welded to the transmission shaft 17, and the transmission shaft 17 is located above the pressing plate 13. The right end of the pressing plate 13 is hinged to the second connecting rod 15. The other end of the second connecting rod 15 is hinged to the transmission rod 16, and the other end of the transmission rod 16 is also welded to the transmission shaft 17. The first connecting rod 14 and the second connecting rod 15 are cross-arranged, and preferably, they do not contact each other.

[0047] A plurality of strip-shaped grooves 18 are formed on the surface of the pressing plate 13. The end portions of the first connecting rod 14 and the second connecting rod 15 are respectively inserted into the corresponding strip-shaped grooves 18, and the size of the strip-shaped grooves 18 is long enough to provide a space for the first connecting rod 14 and the second connecting rod 15 to rotate.

[0048] As Figures 5 to 7 shown, when the wave crest of the water body 3 outside the well reaches the left side of the pressing plate 13, the left side of the pressing plate 13 swings upward. The first connecting rod 14 moves left and upward along the waist-shaped hole 23. The right side of the pressing plate 13 swings downward. The second connecting rod 15 pulls the transmission rod 16 to move right and downward, causing the transmission shaft 17 to rotate counterclockwise by an angle. The transmission shaft 17 drives the first connecting rod 14 to rotate right and downward by an angle, pressing down the left side of the pressing plate 13, thereby pressing down the surging water surface and suppressing the fluctuation. At the same time, the impact force of the surge is used to make the pressing plate 13 exert a reverse pressure on the surge, and further squeeze more water into the water storage bladder 6.

[0049] As Figures 8 to 10 shown, when the wave crest of the water body 3 outside the well reaches the right side of the pressing plate 13, the right side of the pressing plate 13 swings upward. The second connecting rod 15 pulls the transmission rod 16 to move upward, causing the transmission shaft 17 to rotate clockwise by an angle. The transmission shaft 17 drives the first connecting rod 14 to rotate left and upward. The other end of the first connecting rod 14 moves along the waist-shaped hole 23, lifting the left side of the pressing plate 13. The right side of the pressing plate 13 automatically presses downward. Thus, under the combined action of this pressure and the self-weight of the surge suppression mechanism, the surging water surface is pressed down to suppress the fluctuation.

[0050] To ensure that the surge suppression mechanism floats up and down stably and will not drift left and right or shake and topple due to the influence of the wind direction, a vertical first guiding hole 19 is provided on the windproof well 1. The first guiding hole 19 is elongated, and its width matches the diameter of the transmission shaft 17. The root of the transmission shaft 17 is installed in the first guiding hole and can float up and down along the first guiding hole.

[0051] A rotating shaft 20 is installed in the middle of the pressing plate 13. The rotating shaft 20 is parallel to the transmission shaft 17, and the pressing plate 13 swings with the rotating shaft 20 as the fulcrum. A vertical second guiding hole 21 is provided on the wind protection well 1. The second guiding hole 21 is strip-shaped and has a width matching the diameter of the rotating shaft 20. The root of the rotating shaft 20 is installed in the second guiding hole 21 and floats up and down along the second guiding hole 21.

[0052] As Figure 3 shown, the first connecting rod 14, the second connecting rod 15 and the transmission rod 16 form a set of transmission components. At least one set of transmission components is installed on the front and back sides of the pressing plate 13 respectively, so that the pressing plate can basically maintain a horizontal state.

[0053] The front end of the pressing plate 13 is provided with a conical flow guiding part 22 for reducing wind resistance.

[0054] Other structures of this embodiment are the same as those of Embodiment 1.

[0055] The surge suppression mechanism of this embodiment cooperates with the wind protection well 1 and the water storage structure, which can suppress the surge of the water body outside the well, keep the water surface near the wind protection well 1 relatively calm, and reduce the fluctuation of the water body in the well caused by the surge. And this surge suppression mechanism also utilizes the fluctuation generated by the surge to make the pressing plate 13 apply a reverse pressure to the surge, that is, increase the instantaneous pressure value of the water pressure, press more water flow into the water storage bladder 6, the water storage bladder 6 expands fully, expands the water storage capacity of the water storage bladder 6, reduces the surge amplitude, and improves the measurement accuracy of the liquid level measuring instrument 5 for the water surface in the well.

[0056] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A follow-up type transient fluctuation suppression and compensation device for water level monitoring, characterized in that, Comprising: A windbreak well installed in the water body, the windbreak well connecting the water body outside the well and the water body inside the well, and a liquid level measuring instrument is installed on the windbreak well; A housing fixed inside the windbreak well, the housing being a sealed structure; A water storage mechanism installed inside the housing, the water storage mechanism penetrating through the housing and the windbreak well and connecting the water body outside the well and the water body inside the well; the water storage mechanism includes a water storage bladder, the water storage bladder being a contracted elastic bladder in a free state, and the surging water body is pressed into the water storage bladder due to the change in water pressure, causing the water storage bladder to expand; The water storage mechanism further includes a water inlet pipe, a buffer pipe, and a water outlet pipe connected in sequence; the head end of the water inlet pipe extends outside the housing and the windbreak well, the tail end of the water inlet pipe is tightly sleeved on the water storage bladder, the buffer pipe is spirally coiled, and the water outlet pipe extends outside the housing and communicates with the water body inside the well; A surge suppression mechanism is installed outside the windbreak well for suppressing the surge of the water body outside the well and pressing the water body into the water storage mechanism; the surge suppression mechanism includes a pressing plate, a first connecting rod, a second connecting rod, a transmission rod, and a transmission shaft; the pressing plate floats on the water surface, a waist-shaped hole is provided at the left end of the pressing plate, the first connecting rod is pivotally connected in the waist-shaped hole, and the other end of the first connecting rod is fixedly connected to the transmission shaft; the right end of the pressing plate is hinged to the second connecting rod, the other end of the second connecting rod is hinged to the transmission rod, and the other end of the transmission rod is also fixedly connected to the transmission shaft; the first connecting rod and the second connecting rod are cross-set; when the water body outside the well fluctuates up and down, the pressing plate swings and presses down the surging water surface to suppress the fluctuation.

2. The follow-up type transient fluctuation suppression compensation device according to claim 1, wherein The water storage bladder includes a bladder belly and a bladder waist, the bladder belly being in a folded accordion pleat shape in a free state, the bladder waist connecting two adjacent bladder bellies, the bladder waist being retracted relative to the bladder belly, and a sleeve opening is provided on the bladder belly at the frontmost side, and the sleeve opening is tightly sleeved on the water inlet pipe.

3. The follow-up type transient fluctuation suppression compensation device according to claim 1, wherein A vertical first guiding hole is provided on the windbreak well; the root of the transmission shaft is installed in the first guiding hole and floats up and down along the first guiding hole.

4. The follow-up type transient fluctuation suppression compensation device according to claim 1, characterized in that A rotating shaft is installed in the middle of the pressing plate, the rotating shaft being parallel to the transmission shaft, and the pressing plate swings with the rotating shaft as a pivot; a vertical second guiding hole is provided on the windbreak well, the root of the rotating shaft is installed in the second guiding hole and floats up and down along the second guiding hole.

5. The follow-up type transient fluctuation suppression compensation device according to claim 1, characterized in that The first connecting rod, the second connecting rod, and the transmission rod form a set of transmission components, and at least one set of the transmission components is installed on the front and rear sides of the pressing plate respectively.

6. The follow-up type transient fluctuation suppression compensation device according to claim 1, characterized in that, A conical guiding part is provided at the front end of the pressing plate for reducing wind resistance.

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