Coastal high-density old urban flood disaster waterlogging-prone point warning equipment

Abstract

The invention relates to the technical field of water level measuring equipment, and discloses coastal high-density old urban flood disaster waterlogging-prone point warning equipment which comprises a water level detection module and water level follow-up modules in one-to-one correspondence with measuring electrodes, each water level follow-up module comprises a water level cavity, and the pressure in each water level cavity is always kept the same as the external air pressure. When the measuring electrode is communicated with the water level cavity shell, a corresponding signal is output, and the signal processing module receives the signal and outputs water level information. According to the coastal high-density old urban flood disaster waterlogging-prone point warning equipment, the liquid level of liquid in the water level cavity is changed through the buoyancy of accumulated water, after the liquid level in the water level cavity rises, the measuring electrode is communicated with the shell, the signal processing module obtains water level data, in the process, the measuring electrode does not make direct contact with the accumulated water, higher reliability is achieved, and meanwhile the water level can be accurately measured. And more sludge is adhered to the water level follow-up module, so that the change of the liquid level in the water level cavity is not influenced, the measurement precision is not influenced, and cleaning is not needed.

Description

Technical Field

[0001] The present application relates to the technical field of water level measurement equipment, and in particular to a flood-prone point warning device for high-density old urban areas along the coast. Background Art

[0002] Due to dense population and aging drainage systems, old and densely populated coastal areas are prone to waterlogging due to poor drainage during heavy rains. Real-time monitoring can accurately locate waterlogged areas, issue early warnings and initiate emergency responses in a timely manner, reducing casualties and economic losses. At the same time, long-term monitoring data can reveal the causes of waterlogging (such as pipe network siltation, low-lying terrain, etc.), providing a scientific basis for the transformation of drainage facilities and the adjustment of urban layout, and promoting the construction of smart cities.

[0003] Conductive electronic water gauge is a common warning device for flood-prone points. It uses electrodes to contact the water body to form a closed circuit and uses the conductivity of water to detect the water level. It has the advantages of high measurement accuracy, strong anti-interference ability, and low maintenance requirements. However, in coastal cities, stagnant water is often highly corrosive. If the electrodes are in contact with stagnant water for a long time, they are easily corroded, affecting the measurement accuracy.

[0004] Secondly, since coastal cities are prone to waterlogging, electronic water gauges are often soaked in stagnant water, which often contains more silt. After the water recedes, the silt may solidify on the electronic water gauge and require manual cleaning. Summary of the invention

[0005] The present application proposes a flood-prone point warning device in a high-density coastal old city area. The liquid level in the water level chamber is changed by the buoyancy of the accumulated water. When the liquid level in the water level chamber rises, the measuring electrode is connected to the shell, and the signal processing module obtains the water level data. The measuring electrode does not directly contact the accumulated water, which reduces the corrosion of the electrode and is not affected by silt.

[0006] To achieve the above purpose, the present application adopts the following technical solution: a flood disaster prone point warning device in a high-density old city along the coast, comprising: The water level detection module comprises a supporting shell, a substrate is arranged in the supporting shell, a plurality of signal generating circuits are arranged on the substrate, each signal generating circuit is connected to a measuring electrode, and the signal generating circuit is connected to a signal processing module; A water level follower module corresponds one-to-one with the measuring electrode, and the water level follower module includes a water level cavity. The pressure in the water level cavity is always kept the same as the external air pressure. When the measuring electrode is connected to the water level cavity shell, a corresponding signal is output. The signal processing module receives the signal and outputs water level information. A liquid bag is provided at the bottom of the water level cavity. The water level cavity is filled with conductive liquid. The measuring electrode extends into the water level cavity. Initially, the liquid level in the water level cavity is lower than the measuring electrode. When the external water accumulates and submerges the measuring electrode, the liquid in the water level cavity also submerges the measuring electrode.

[0007] Furthermore, an airbag is provided on the top of the water level cavity, the airbag has no elastic force, and the water level cavity is a sealed cavity.

[0008] Furthermore, the projections of the airbag and the liquid bag in the vertical direction are staggered.

[0009] Furthermore, a mounting plate is provided between the supporting shell and the water level cavity, and a measuring pole is fixedly connected to the mounting plate, one end of the measuring pole extends into the water level cavity, and the other end of the measuring pole is close to the measuring electrode and electrically connected to the measuring electrode. The mounting plate is fixed to the supporting shell by fastening screws, and the water level cavity is fixed to the mounting plate by a clamping plate.

[0010] Furthermore, it also includes a fixing rod, the water level cavity is provided with a mounting hole, the fixing rod passes through the mounting holes on each water level cavity, both ends of the fixing rod are fastened by bolts, and a partition column is provided between the two water level cavities.

[0011] Furthermore, the water level cavity is connected to the liquid bag through a channel.

[0012] Furthermore, a detection pole is provided on the mounting plate, and the detection pole is inserted into the water level cavity. When the liquid bag is compressed to the minimum, the liquid height in the water level cavity is not higher than the detection pole. A fault detection electrode is provided at a corresponding position on the substrate, and the fault detection electrode is connected to a fault detection circuit. When the fault detection electrode is connected to the water level cavity shell, the fault detection circuit sends a fault signal.

[0013] Furthermore, the support shell is provided with through holes, which correspond to the detection electric posts one by one. The support shell is provided with a conductive sheet, which is electrically connected to the fault detection electrode, and the position of the conductive sheet corresponding to the through hole is suspended.

[0014] The beneficial effects of the present invention are as follows: The present application provides a flood-prone point warning device in a high-density coastal old city area. The device changes the liquid level in a water level chamber through the buoyancy of accumulated water. When the liquid level in the water level chamber rises, the measuring electrode is connected to the shell, and the signal processing module obtains water level data. During this process, the measuring electrode is not in direct contact with the accumulated water, and the water level chamber is filled with low-concentration salt water with low conductivity. Compared with the accumulated water, its corrosiveness is relatively low, and its corrosiveness to the conductive electrode is low, so it has higher reliability.

[0015] The buoyancy of accumulated water acts on the liquid capsule, changing the liquid level height of the liquid in the water level cavity. During the whole process, there are no mechanical moving parts, and the service life and reliability are high. When urban flooding occurs, even if there is a lot of silt adhered to the water level following module, it will not affect the change of the liquid level in the water level cavity, and will not affect the measurement accuracy. There is no need to clean it, and the maintenance requirements are reduced. Secondly, even if the liquid capsule or air bag is damaged, it will not affect the measurement results in the short term. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work: Figure 1 It is a schematic diagram of the present invention; Figure 2 is a schematic diagram of a water level detection module in the present invention; Figure 3 It is a schematic diagram of the water level following module in the present invention; Figure 4 It is a side view of the water level follower module in the present invention; Figure 5 It is a front view of the water level follower module in the present invention; Figure 6 For the present invention Figure 1 A magnified view of middle; Figure 7 It is a partial side view of the supporting shell in the present invention.

[0017] In the figure: 1. Water level detection module; 2. Signal processing module; 3. Water level follower module; 31. Water level cavity; 32. Liquid bag; 33. Air bag; 34. Measuring electric column; 35. Lower pressure plate; 36. Upper pressure plate; 37. Detection electric column; 4. Pressing plate; 5. Separation column; 6. Fixing rod; 7. Mounting plate; 11. Support shell; 12. Measuring electrode; 13. Through hole; 14. Conductive sheet; 15. Fault detection electrode. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1, as Figure 1-Figure 5A flood-prone point warning device for a high-density coastal old city includes a water level detection module 1, a signal processing module 2 and a water level follower module 3. The water level detection module 1 has a supporting shell 11 and a measuring electrode 12. The supporting shell 11 is made of a corrosion-resistant material. The measuring electrode 12 penetrates the supporting shell 11. A substrate is arranged in the supporting shell 11. The substrate has multiple groups of signal generating circuits. When the measuring electrode 12 is connected to the shell, a corresponding signal is output. The substrate is electrically connected to the signal processing module 2. The signal processing module 2 processes the signal to generate water level information. The signal processing module 2 has a communication module, which can upload the water level information to a remote monitoring center through a wireless network. The signal processing module 2 is also connected to a power supply unit and an audible and visual alarm device. When the water level exceeds a threshold, an alarm message is issued to warn passing pedestrians and vehicles. The signal processing module 2 and corresponding electronic equipment are installed in an equipment box on the top of the water level detection module 1.

[0020] The water level follower module 3 is provided with multiple groups, corresponding to the measuring electrodes 12 one by one. The water level follower module 3 includes a water level cavity 31. The pressure in the water level cavity 31 is always kept the same as the external air pressure. The shell of the water level cavity 31 is charged. The bottom of the water level cavity 31 is provided with a liquid capsule 32. The water level cavity 31 is filled with a liquid with conductive ability, for example, 0.9% NaCl solution, the measuring electrode 12 extends into the water level cavity 31. Initially, the liquid level in the water level cavity 31 is lower than the measuring electrode 12. When the accumulated water submerges the water level cavity 31, due to the principle of communicating vessels, the liquid level in the water level cavity 31 is the same as the liquid level of the external accumulated water. The liquid level height difference caused by the density difference between the internal and external liquids can be ignored. The external accumulated water can submerge the measuring electrode 12, and the liquid in the water level cavity 31 also submerges the measuring electrode 12, so that the measuring electrode 12 is connected to the water level cavity 31 shell, and the circuit corresponding to the measuring electrode 12 sends a signal. In order to improve the measurement accuracy, more water level follower modules 3 are arranged, and water level follower modules 3 can also be set on other surfaces of the supporting shell 11.

[0021] If the water level chamber 31 is connected to the atmosphere, the liquid in the water level chamber 31 will gradually decrease, and the liquid needs to be replenished regularly, which increases the maintenance requirements. In this embodiment, an airbag 33 is provided on the top of the water level chamber 31. The airbag 33 has no elastic force. As the air pressure changes, the airbag 33 expands or contracts slightly, so that the pressure in the water level chamber 31 is the same as the external air pressure. The water level chamber 31 is a sealed cavity, so that the liquid in the water level chamber 31 will not decrease.

[0022] In order to reduce the space occupied by the liquid capsule 32 and the air capsule 33, the projections of the air capsule 33 and the liquid capsule 32 in the vertical direction are staggered, and the air capsule 33 on the next level and the liquid capsule 32 on the level are staggered in the same space.

[0023] See also Figure 1 and Figure 3In order to facilitate installation, a mounting plate 7 is provided between the support shell 11 and the water level cavity 31, and a measuring electric column 34 is fixedly connected to the mounting plate 7. One end of the measuring electric column 34 extends into the water level cavity 31, and the other end of the measuring electric column 34 is close to the measuring electrode 12 and electrically connected to the measuring electrode 12. The mounting plate 7 is fixed to the support shell 11 by fastening screws, and the water level cavity 31 is fixed to the mounting plate 7 by a clamping plate 4. The clamping plate 4 is fixed to the mounting plate 7 by fastening screws. The mounting plate 7 is provided with a sealing gasket corresponding to the position of the opening of each water level cavity 31 to ensure the sealing between the water level cavity 31 and the mounting plate 7. A flange is provided at the opening position of the water level cavity 31, and the clamping plate 4 is pressed on the flange to press the water level cavity 31 onto the mounting plate 7. After the water level cavity 31 is installed on the mounting plate 7, it is installed as a whole on the support shell 11.

[0024] The air bag 33 and the liquid bag 32 are mounted on a flat plate, see Figure 3 The liquid capsule 32 is installed on the lower pressure plate 35, and the air capsule 33 is installed on the upper pressure plate 36. The lower pressure plate 35 and the upper pressure plate 36 are symmetrical with the axis of the measuring electric column 34 as the symmetry axis. The liquid capsule 32 and the air capsule 33 can be glued to the flat plate by glue, or they can be clamped between the flat plate and the water level cavity 31. If the air capsule 33 and the liquid capsule 32 are glued to the flat plate by glue, then when the liquid capsule 32 or the air capsule 33 is damaged, the flat plate is replaced as a whole. If the air capsule 33 and the liquid capsule 32 are clamped on the flat plate by the flat plate, the liquid capsule 32 or the air capsule 33 can be replaced separately.

[0025] See also Figure 1 and Figure 6 A mounting hole is provided on the water level cavity 31, and a fixing rod 6 passes through the mounting hole on each water level cavity 31. Both ends of the fixing rod 6 are fastened by bolts. The fixing rod 6 makes each water level cavity 31 a whole. A partition column 5 is provided between two water level cavities 31. The partition column 5 separates the two water level cavities 31. On the one hand, it is convenient for the accumulated water to contact with the water level cavity 31, and on the other hand, it prevents the liquid bag 32 and the air bag 33 from being flattened.

[0026] During assembly, the water level follower module 3 is installed on the fixing rod 6, and then the water level follower module 3 is laid flat as a whole, filled with water, and then the water level follower module 3 is made vertical as a whole, and the liquid above the measuring electric column 34 flows out, and the initial liquid in the water level cavity 31 is lower than the measuring electric column 34, and the initial air pressure is the same as the external air pressure. After the liquid flows out, the water level follower module 3 is laid horizontally as a whole, and the mounting plate 7 and the clamping plate 4 are installed. The fastening screws between the mounting plate 7 and the clamping plate 4 are tightened to seal the water level cavity 31, and finally the mounting plate 7 is installed on the supporting shell 11.

[0027] To further reduce the space occupied by the liquid bag 32 and the air bag 33, please refer to Figure 5In the water level cavity 31, at a position lower than the measuring pole 34, only the space surrounding the measuring pole 34 is slightly larger, and other positions are connected to the liquid capsule 32 through a narrow channel.

[0028] When a liquid capsule 32 or an air capsule 33 is damaged, the accumulated water can directly flow into the water level cavity 31, so that the measuring electrode 12 and the shell are connected, which does not affect the use of the water gauge. In order to be able to detect the damage of the liquid capsule 32 and the air capsule 33 in time, a detection pole 37 is provided on the mounting plate 7. The detection pole 37 is inserted into a higher position in the water level cavity 31. When the liquid capsule 32 is compressed to the minimum, the liquid height in the water level cavity 31 cannot be higher than the detection pole 37. A fault detection electrode 15 is provided at a corresponding position on the substrate. The fault detection electrode 15 is connected to a fault detection circuit. When the fault detection electrode 15 is connected to the shell, the fault detection circuit sends a fault signal, which is convenient for timely detection of damage to the liquid capsule 32 or the air capsule 33, to avoid the water level cavity 31 being filled with silt and corroding the measuring pole 34.

[0029] A through hole 13 is provided on the support shell 11, and the through hole 13 corresponds to the detection electric post 37 one by one. A conductive sheet 14 is provided in the support shell 11, and the conductive sheet 14 is electrically connected to the fault detection electrode 15. The detection electric post 37 is inserted into the through hole 13 and is close to the conductive sheet 14. Since the lengths of each detection electric post 37 may be inconsistent, in order to avoid the shorter detection electric post 37 from being unable to fully contact the conductive sheet 14, the position of the conductive sheet 14 corresponding to the through hole 13 is suspended to ensure that each detection electric post 37 can be close to the conductive sheet 14.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flood-prone area warning device for high-density coastal old urban areas, comprising: A water level detection module (1), the water level detection module (1) comprising a supporting shell (11), a substrate being arranged in the supporting shell (11), a plurality of groups of signal generating circuits being arranged on the substrate, each of the signal generating circuits being connected to a measuring electrode (12), the signal generating circuits being connected to a signal processing module (2), and characterized in that it further comprises: A water level follower module (3) corresponding one to one with a measuring electrode (12), the water level follower module (3) comprising a water level cavity (31), the pressure in the water level cavity (31) always being kept the same as the external air pressure, when the measuring electrode (12) is connected to the shell of the water level cavity (31), a corresponding signal is output, the signal processing module (2) receives the signal and outputs water level information, a liquid capsule (32) is provided at the bottom of the water level cavity (31), the water level cavity (31) is filled with a liquid having a conductive ability, the measuring electrode (12) extends into the water level cavity (31), initially, the liquid level in the water level cavity (31) is lower than the measuring electrode (12), when the external accumulated water submerges the measuring electrode (12), the liquid in the water level cavity (31) also submerges the measuring electrode (12).

2. The flood-prone area warning device for high-density coastal old urban areas according to claim 1 is characterized in that: An air bag (33) is provided on the top of the water level cavity (31); the air bag (33) has no elastic force, and the water level cavity (31) is a sealed cavity.

3. The flood-prone area warning device for high-density coastal old urban areas according to claim 2 is characterized in that: The projections of the air bag (33) and the liquid bag (32) in the vertical direction are staggered.

4. The flood-prone area warning device for high-density coastal old urban areas according to claim 1 is characterized in that: A mounting plate (7) is provided between the support shell (11) and the water level cavity (31); a measuring electric column (34) is fixedly connected to the mounting plate (7); one end of the measuring electric column (34) extends into the water level cavity (31); the other end of the measuring electric column (34) is in close contact with the measuring electrode (12) and is electrically connected to the measuring electrode (12); the mounting plate (7) is fixed to the support shell (11) by means of fastening screws; and the water level cavity (31) is fixed to the mounting plate (7) by means of a clamping plate (4).

5. The flood-prone point warning device for high-density coastal old urban areas according to claim 1 is characterized in that: It also includes a fixing rod (6), the water level cavity (31) is provided with a mounting hole, the fixing rod (6) passes through the mounting hole on each water level cavity (31), the two ends of the fixing rod (6) are fastened by bolts, and a partition column (5) is provided between the two water level cavities (31).

6. The flood-prone point warning device for high-density coastal old urban areas according to claim 1 is characterized in that: The water level cavity (31) is in communication with the liquid bag (32) through a channel.

7. The flood-prone area warning device for high-density coastal old urban areas according to claim 4 is characterized in that: The mounting plate (7) is provided with a detection electric post (37), which is inserted into the water level cavity (31). When the liquid capsule (32) is compressed to a minimum, the height of the liquid in the water level cavity (31) is also not higher than the detection electric post (37). A fault detection electrode (15) is provided at a corresponding position on the substrate. The fault detection electrode (15) is connected to a fault detection circuit. When the fault detection electrode (15) is connected to the water level cavity housing, the fault detection circuit sends a fault signal.

8. The flood-prone point warning device for high-density coastal old urban areas according to claim 7 is characterized in that: The support shell (11) is provided with through holes (13), the through holes (13) corresponding one to one with the detection electric posts (37), the support shell (11) is provided with a conductive sheet (14), the conductive sheet (14) is electrically connected to the fault detection electrode (15), and the position of the conductive sheet (14) corresponding to the through holes (13) is suspended.

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