阅读说明：本技术 一种中小流域面雨量预警装置及其预警系统 (Medium and small watershed face rainfall early warning device and early warning system thereof ) 是由 龙余良 汪如良 吴建明 毕晨 阙志萍 周雨 肖雯 曹瑜 陶昕宇 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种中小流域面雨量预警装置及其预警系统,它包括装置本体,装置本体包括预警装置、底板一和底板二,底板一设置在底板二的上方,底板二的下方设有盲孔螺纹,底板一上设有通孔螺纹,通孔螺纹与盲孔螺纹之间通过螺栓进行固定连接,底板二的底部设有固定桩,底板二上两相邻的盲孔螺纹之间设有防渗漏凹槽,防渗漏凹槽为中间低两端高的结构。本发明的有益效果是：提供一种既可以实现通过肉眼进行观察也可以通过客户端实现全过程的监控,使得能够适应不同地质条件的固定,满足了不同中小流域雨量的监测。(The invention discloses a middle and small watershed rainfall early warning device and an early warning system thereof, and the early warning device comprises a device body, wherein the device body comprises an early warning device, a first bottom plate and a second bottom plate, the first bottom plate is arranged above the second bottom plate, blind hole threads are arranged below the second bottom plate, through hole threads are arranged on the first bottom plate, the through hole threads and the blind hole threads are fixedly connected through bolts, fixing piles are arranged at the bottom of the second bottom plate, anti-seepage grooves are arranged between two adjacent blind hole threads on the second bottom plate, and each anti-seepage groove is of a structure with a low middle part and two high ends. The invention has the beneficial effects that: the monitoring system can realize observation through naked eyes and monitoring of the whole process through a client, can adapt to fixation of different geological conditions, and meets the monitoring of rainfall of different medium and small watersheds.)

1. The utility model provides a medium and small watershed face rainfall early warning device which characterized in that: the anti-seepage device comprises a device body, wherein the device body comprises an early warning device, a first bottom plate and a second bottom plate, the first bottom plate is arranged above the second bottom plate, blind hole threads are arranged below the second bottom plate, through hole threads are arranged on the first bottom plate, the through hole threads and the blind hole threads are fixedly connected through bolts, fixing piles are arranged at the bottom of the second bottom plate, anti-seepage grooves are arranged between two adjacent blind hole threads on the second bottom plate, and each anti-seepage groove is of a structure with a low middle part and two high ends;

the middle part of the anti-leakage groove is provided with a leakage part, the leakage part is of a cylindrical structure, the bottom of the fixing pile is provided with a spine part, a structural surface inclining outwards is arranged beside the anti-leakage groove, a supporting rod capable of being detached is arranged on the first bottom plate, the supporting rod comprises a first fixing section fixed on the first bottom plate and a second fixing section fixed at the bottom of the early warning device, at least one connecting rod capable of being detached randomly is arranged between the first fixing section and the second fixing section, the early warning device comprises an early warning rainfall monitoring box and a solar panel arranged at the upper part of the early warning rainfall monitoring box, the width of the solar panel is larger than that of the early warning rainfall monitoring box, the two ends of the solar panel are respectively provided with a baffle plate, the top of the early warning rainfall monitoring box is provided with an inclined rainfall baffle plate, and the inclined rainfall baffle plate is provided with a first inclined rainfall baffle plate and a second inclined rainfall baffle plate, a first filter plate is arranged between the first inclined rainfall baffle and the solar sailboard, a second filter plate is arranged at the top of the early warning rainfall monitoring box, the diameter of a filter hole in the first filter plate is larger than that of a filter hole in the second filter plate, the second filter plate is located at the bottom of the flowing water surface of the first inclined rainfall baffle and the bottom of the flowing water surface of the second inclined rainfall baffle, and a first structure and a second structure are arranged inside the early warning rainfall monitoring box.

2. The medium and small watershed face rainfall early warning device of claim 1, wherein: the first structure is the same as the volume of the interior of the second structure, the first inclined rainfall baffle and the second inclined rainfall baffle are of V-shaped structures, the length of the joint of the first inclined rainfall baffle and the second inclined rainfall baffle is larger than that of the joint of the early warning rainfall monitoring box, and rotatable shielding devices are arranged beside the first filter plate and the second filter plate.

3. The medium and small watershed face rainfall early warning device of claim 2, wherein: the shielding device comprises a fixed cylinder fixed at the top of the early warning rainfall monitoring box body, a rotatable elastic rod is arranged on the fixed cylinder, a sealing part is arranged below the bottom of the elastic rod, and the area of the sealing part is larger than that of the second filter plate.

4. The medium and small watershed face rainfall early warning device of claim 1, wherein: the inside of first structure and second structure is equipped with first U-shaped water volume monitoring pipe and second U-shaped water volume monitoring pipe respectively, the volume of the monitoring rainfall of second U-shaped water volume monitoring pipe is greater than first U-shaped water volume monitoring pipe volume, the inside of first U-shaped water volume monitoring pipe and second U-shaped water volume monitoring pipe all is equipped with level sensor and cursory water level monitoring piece.

5. The medium and small watershed face rainfall early warning device of claim 4, wherein: the water level overflow device is arranged between the first U-shaped water quantity monitoring pipe and the second U-shaped water quantity monitoring pipe, scale marks and an overflow outlet are arranged on the water level overflow device and the second U-shaped water quantity monitoring pipe, an integrally formed fixed block is arranged on the side walls of the first U-shaped water quantity monitoring pipe and the second U-shaped water quantity monitoring pipe, and a telescopic rope is arranged between the fixed block and the floating water level monitoring block.

6. The medium and small watershed face rainfall early warning device of claim 4, wherein: the utility model discloses a rain early warning system, including buoy water level monitoring piece, early warning rainfall monitoring case, buoy water level monitoring piece is circular structure, and is equipped with the reflection of light subsides on the side of buoy water level monitoring piece, be equipped with signal transmission pole one and signal transmission pole two on the top of early warning rainfall monitoring case, the circumference of buoy water level monitoring piece is spine portion shape, the port department of first U-shaped water volume monitoring pipe and second U-shaped water volume monitoring pipe is equipped with the network grid.

7. The medium and small watershed face rainfall early warning device of claim 1, wherein: the top of early warning rainfall monitoring case is equipped with overflows the structure, the middle part that overflows the structure is the recess, and the both sides of recess are equipped with the drainage groove, it divide into the same tapering of quartering to overflow the structure, the detection water content of first U-shaped water volume monitoring pipe is less than the water content of second U-shaped water volume monitoring pipe.

8. The early warning system of the early warning device for the rainfall on the medium and small watershed surfaces as claimed in any one of claims 1 to 7, wherein: the water level sensor comprises a storage battery, an instruction sending device and an instruction receiving device, wherein the storage battery, the instruction sending device and the instruction receiving device are arranged in a first U-shaped water quantity monitoring pipe and a second U-shaped water quantity monitoring pipe, a data processing module is arranged above the storage battery, and the data processing module is connected with the water level sensor.

9. The early warning system of the early warning device for the rainfall on the medium and small watershed surfaces as claimed in claim 8, wherein: the early warning rainfall monitoring box is characterized by further comprising a client matched with the early warning device body, wherein a transmitting device and a receiving device are arranged on the top of the early warning rainfall monitoring box, and the transmitting device and the receiving device are connected with the client through a data network.

10. The early warning system of the early warning device for the rainfall on the medium and small watershed surfaces as claimed in claim 8, wherein: the storage battery, the instruction sending device and the instruction receiving device are electrically connected, and a transparent rectangular observation window is arranged on the side wall of the early warning rainfall monitoring box.

Technical Field

The invention relates to the technical field of medium and small watershed surface rainfall early warning, in particular to a medium and small watershed surface rainfall early warning device and an early warning system thereof.

Background

And (3) calculating 132865 medium and small watershed surface rain values of Jiangxi province by arranging and collecting 3884523 precipitation observation records in 2014-plus 2019. And calculating quantile change conditions of different precipitation levels by using precipitation data of the national station in the last 5 years, and performing retrieval analysis on the rainfall values of the 13 medium and small watershed surfaces according to the same quantile to preliminarily determine the rainfall level values of the medium and small watershed surfaces.

The national station precipitation data show that the quantile of 24h light rain is 0-67.87, the quantile of medium rain is 67.87-87.56, the quantile of heavy rain is 87.56-96.43, the quantile of heavy rain is 96.43-99.42, the quantile of heavy rain is 99.42-99.99, and the quantile of extra heavy rain is 99.99-100. The same quantile analysis is carried out by using the calculated surface rainfall value, and the following can be obtained: the corresponding small rainfall value is 0-6.3 mm, the medium rainfall value is 6.3-17.0 mm, the large rainfall value is 17.0-35.8 mm, the rainstorm rainfall value is 35.8-75.7 mm, the large rainstorm rainfall value is 75.7-168.3 mm, and the extra-large rainfall value is greater than =169 mm.

According to the using habits of Chinese science and technology workers, referring to the 'GB/T28592-2012 rainfall level' and the 'GB/T20486-2017 river basin surface rainfall level', slightly adjusting according to expert opinions, and determining the rainfall level of the small and medium basin surfaces in 24 h: the grade value of small rainfall is 0.1-5.9 mm, the grade value of medium rainfall is 6.0-19.9 mm, the grade value of large rainfall is 20.0-34.9 mm, the grade value of heavy rainfall is 35.0-74.9 mm, the grade value of heavy rainfall is 75.0-169.9 mm, and the grade value of extra-large rainfall is greater than or equal to 170.0 mm; rain quantity grade of medium and small watershed surfaces in 12 h: the grade value of the small rainfall is 0.1-2.9 mm, the grade value of the medium rainfall is 3.0-9.9 mm, the grade value of the large rainfall is 10.0-19.9 mm, the grade value of the heavy rainfall is 20.0-49.9 mm, the grade value of the heavy rainfall is 50.0-99.9 mm, and the grade value of the extra-large heavy rainfall is greater than or equal to 100.0 mm.

However, although the existing production method can produce the early warning device for calculating the rainfall, the existing production method still has a plurality of defects: 1. at present, the existing early warning device mainly calculates the rainfall of a certain area through a single-stage collecting device, and when a large rainfall level value needs to be monitored, the device cannot be effectively monitored at the moment, so that the rainfall cannot be monitored in real time. 2. Although the existing device can monitor small river flows, the problem that a large river basin cannot be monitored and the device is frequently replaced exists, and the utilization rate of the device is not high is caused. 3. The existing rainfall early warning device mainly collects rainwater in a form of a lying opening, and when rainfall is accompanied by strong wind weather, the blockage of a water collecting opening is caused by garbage and dust on the ground or on the water surface, so that the monitoring of rainfall data is unstable. 4. When the existing rainfall early warning device detects at night, the reading is difficult to read due to the problem of sight, and the correctness of the reading is influenced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a method which can realize observation by naked eyes and monitoring of the whole process by a client, so that the method can adapt to fixation of different geological conditions and meet the monitoring of different medium and small watershed rainfall.

The purpose of the invention is realized by the following technical scheme: a middle and small watershed surface rainfall early warning device and an early warning system thereof comprise a device body, wherein the device body comprises an early warning device, a first bottom plate and a second bottom plate, the first bottom plate is arranged above the second bottom plate, blind hole threads are arranged below the second bottom plate, through hole threads are arranged on the first bottom plate, the through hole threads and the blind hole threads are fixedly connected through bolts, fixing piles are arranged at the bottom of the second bottom plate, an anti-seepage groove is arranged between two adjacent blind hole threads on the second bottom plate, and the anti-seepage groove is of a structure with a low middle part and two high ends;

the middle part of the anti-leakage groove is provided with a leakage part, the leakage part is of a cylindrical structure, the bottom of the fixing pile is provided with a spine part, a structural surface inclining outwards is arranged beside the anti-leakage groove, a supporting rod capable of being detached is arranged on the first bottom plate, the supporting rod comprises a first fixing section fixed on the first bottom plate and a second fixing section fixed at the bottom of the early warning device, at least one connecting rod capable of being detached randomly is arranged between the first fixing section and the second fixing section, the early warning device comprises an early warning rainfall monitoring box and a solar panel arranged at the upper part of the early warning rainfall monitoring box, the width of the solar panel is larger than that of the early warning rainfall monitoring box, the two ends of the solar panel are respectively provided with a baffle plate, the top of the early warning rainfall monitoring box is provided with an inclined rainfall baffle plate, and the inclined rainfall baffle plate is provided with a first inclined rainfall baffle plate and a second inclined rainfall baffle plate, a first filter plate is arranged between the first inclined rainfall baffle and the solar sailboard, a second filter plate is arranged at the top of the early warning rainfall monitoring box, the diameter of a filter hole in the first filter plate is larger than that of a filter hole in the second filter plate, the second filter plate is located at the bottom of the flowing water surface of the first inclined rainfall baffle and the bottom of the flowing water surface of the second inclined rainfall baffle, and a first structure and a second structure are arranged inside the early warning rainfall monitoring box.

The first structure is the same as the volume of the interior of the second structure, the first inclined rainfall baffle and the second inclined rainfall baffle are of V-shaped structures, the length of the joint of the first inclined rainfall baffle and the second inclined rainfall baffle is larger than that of the joint of the early warning rainfall monitoring box, and rotatable shielding devices are arranged beside the first filter plate and the second filter plate.

The shielding device comprises a fixed cylinder fixed at the top of the early warning rainfall monitoring box body, a rotatable elastic rod is arranged on the fixed cylinder, a sealing part is arranged below the bottom of the elastic rod, and the area of the sealing part is larger than that of the second filter plate.

The inside of first structure and second structure is equipped with first U-shaped water volume monitoring pipe and second U-shaped water volume monitoring pipe respectively, the volume of the monitoring rainfall of second U-shaped water volume monitoring pipe is greater than first U-shaped water volume monitoring pipe volume, the inside of first U-shaped water volume monitoring pipe and second U-shaped water volume monitoring pipe all is equipped with level sensor and cursory water level monitoring piece.

The water level overflow device is arranged between the first U-shaped water quantity monitoring pipe and the second U-shaped water quantity monitoring pipe, scale marks and an overflow outlet are arranged on the water level overflow device and the second U-shaped water quantity monitoring pipe, an integrally formed fixed block is arranged on the side walls of the first U-shaped water quantity monitoring pipe and the second U-shaped water quantity monitoring pipe, and a telescopic rope is arranged between the fixed block and the floating water level monitoring block.

The utility model discloses a rain early warning system, including buoy water level monitoring piece, early warning rainfall monitoring case, buoy water level monitoring piece is circular structure, and is equipped with the reflection of light subsides on the side of buoy water level monitoring piece, be equipped with signal transmission pole one and signal transmission pole two on the top of early warning rainfall monitoring case, the circumference of buoy water level monitoring piece is spine portion shape, the port department of first U-shaped water volume monitoring pipe and second U-shaped water volume monitoring pipe is equipped with the network grid.

The top of early warning rainfall monitoring case is equipped with overflows the structure, the middle part that overflows the structure is the recess, and the both sides of recess are equipped with the drainage groove, it divide into the same tapering of quartering to overflow the structure, the detection water content of first U-shaped water volume monitoring pipe is less than the water content of second U-shaped water volume monitoring pipe.

The water level sensor comprises a storage battery, an instruction sending device and an instruction receiving device, wherein the storage battery, the instruction sending device and the instruction receiving device are arranged in a first U-shaped water quantity monitoring pipe and a second U-shaped water quantity monitoring pipe, a data processing module is arranged above the storage battery, and the data processing module is connected with the water level sensor.

The early warning rainfall monitoring box is characterized by further comprising a client matched with the early warning device body, wherein a transmitting device and a receiving device are arranged on the top of the early warning rainfall monitoring box, and the transmitting device and the receiving device are connected with the client through a data network.

The storage battery, the instruction sending device and the instruction receiving device are electrically connected, and a transparent rectangular observation window is arranged on the side wall of the early warning rainfall monitoring box.

The invention has the following advantages:

1. according to the solar sailboard, the first filter plate is arranged between the solar sailboard and the inclined rainfall baffle, the solar sailboard is V-shaped, when rainwater is collected, due to the effect of the first filter plate, magazines and large-particle dust in the air can be separated when the solar sailboard meets strong wind weather, the magazines and the large-particle dust are prevented from entering the first filter plate, the second filter plate is located on the upper portion of the early warning device body, the diameter of meshes on the second filter plate is smaller than that of the meshes on the first filter plate, and the arrangement of the first filter plate and the second filter plate enables the rainfall to be detected more accurately.

2. The first bottom plate and the second bottom plate can be fixed at the bottom of a river bed, and when the bottom of the river bed is mucky soil, the second bottom plate can be buried at the bottom of the river bed; and a fixed iron block can be clamped between the first bottom plate and the second bottom plate, and the first bottom plate and the second bottom plate are connected through bolts, so that the stability between the first bottom plate and the second bottom plate is ensured, and the disturbance of water flow to the device is also prevented.

3. The early warning device comprises an early warning device body, wherein a transmitting device is arranged inside the early warning device body, and a first U-shaped water quantity monitoring pipe and a second U-shaped water quantity monitoring pipe are arranged inside the early warning device body; wherein, the rainfall of the two monitoring of first U-shaped water volume monitoring pipe and second U-shaped water volume monitoring pipe is different completely to satisfied the monitoring to different basin rainfall, the inside floating block that sets up of first U-shaped water volume monitoring pipe and second U-shaped water volume monitoring pipe has ensured the monitoring of carrying on the water level at any time, has made things convenient for personnel's operation.

4. The early warning device body is internally provided with the storage battery, the data processing module and the data receiving module, the first U-shaped water quantity monitoring pipe and the second U-shaped water quantity monitoring pipe are provided with scale marks, and the shell of the device body is provided with the transparent glass observation window, so that a worker can observe the water level condition in the device body more conveniently.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the top of the early warning rainfall monitoring box in the invention;

FIG. 3 is a schematic view of the interior of the early warning rainfall monitoring box according to the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

FIG. 5 is an enlarged view of a portion of FIG. 1 at B;

FIG. 6 is an enlarged view of a portion of FIG. 1 at C;

fig. 7 is a partially enlarged view of fig. 3 at D.

In the figure, the device comprises a device body 1, an early warning device 2, a first bottom plate 3, a second bottom plate 4, blind hole threads 5, through hole threads 6, bolts 7, a fixing pile 8, an anti-leakage groove 9, a leakage part 11, a structural surface 12, a support rod 13, a first fixing section 14, a second fixing section 15, a connecting rod 16, an early warning rainfall monitoring box 17, a solar panel 18, a baffle 19, a first inclined rainfall baffle 20, a second inclined rainfall baffle 21, a first filter plate 22, a second filter plate 23, a first structure 24, a second structure 25, a shielding device 26, a fixing cylinder 27, an elastic rod 28, a sealing part 29, a first U-shaped rainfall monitoring pipe 30, a second U-shaped rainfall monitoring pipe 31, a water level sensor 32, a floating water level monitoring block 33, a overflowing device 34, a scale mark 35, an overflowing pipe opening 36, a fixing block 37, a fixing block 38, a rope 39, a reflecting paste 40, a signal emission transmission rod 41, a first signal emission transmission rod 41, a second fixing rod, a first inclined rainfall baffle 20, a second inclined rainfall baffle, a supporting rod inclined to the solar panel, a second inclined to the solar panel, a supporting rod inclined to the solar panel, a second inclined to the solar panel, a supporting device, a supporting the solar panel, a supporting the solar panel, a supporting panel, a solar panel, A second signal transmission rod 42, an overflow structure 43, a groove 44, a drainage groove 45, a storage battery 46, a command sending device 47, a command receiving device 48 and a rectangular observation window 49.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 1 to 7, the early warning device for the rainfall on the medium and small watershed surfaces comprises a device body 1, wherein the device body 1 comprises an early warning device 2, a first bottom plate 3 and a second bottom plate 4, the first bottom plate 3 is arranged above the second bottom plate 4, blind hole threads 5 are arranged below the second bottom plate 4, through hole threads 6 are arranged on the first bottom plate 3, the through hole threads 6 are fixedly connected with the blind hole threads 5 through bolts 7, fixing piles 8 are arranged at the bottom of the second bottom plate 4, anti-leakage grooves 9 are arranged between two adjacent blind hole threads on the second bottom plate 4, and the anti-leakage grooves 9 are of a structure with a low middle part and high ends; the provision of the impermeable recesses 9 prevents corrosion of the screws or the metal sheets by moisture.

The middle part of antiseep recess 9 is equipped with seepage part 11, seepage part 11 is cylindrical structure, the bottom of spud pile 8 is equipped with spine portion, and the setting of spine portion has guaranteed that bottom plate two 4 can be stable fixes the bottom at the riverbed, antiseep recess 9 is other to be equipped with the structure face 12 that leans out, be equipped with bracing piece 13 that can dismantle on the bottom plate 3, bracing piece 13 is including fixing the first 14 of fixed section on bottom plate 3 to and fixing the second 15 of fixed section at early warning device 2 bottom, be equipped with a connecting rod 16 that can dismantle wantonly between fixed section one 14 and the second 15 of fixed section at least, early warning device 2 includes early warning rainfall monitoring box 17 and sets up solar array 18 on early warning rainfall monitoring box 17 upper portion, solar array 18's width is greater than early warning rainfall monitoring box 17's width, solar array 18 both ends are equipped with baffle 19, the rainwater is guaranteed to splash to the outside, an inclined rainfall baffle is arranged on the top of the early warning rainfall monitoring box 17, a first inclined rainfall baffle 20 and a second inclined rainfall baffle 21 are arranged on the inclined rainfall baffle, a first filter plate 22 is arranged between the first inclined rainfall baffle 20 and the solar panel 18 and between the second inclined rainfall baffle 21 and the solar panel 18, two second filter plates 23 are arranged on the top of the early warning rainfall monitoring box 17, the diameter of filter holes in the first filter plate 22 is larger than that of filter holes in the second filter plates 23, the two second filter plates 23 are respectively located at the bottoms of the flowing water surfaces of the first inclined rainfall baffle 20 and the second inclined rainfall baffle 21, and a first structure 24 and a second structure 25 are arranged inside the early warning rainfall monitoring box 17.

The first structure 24 and the second structure 25 are the same in size, the first inclined rainfall baffle 20 and the second inclined rainfall baffle 21 are of V-shaped structures, the length of the joint of the first inclined rainfall baffle 20 and the second inclined rainfall baffle 21 with the solar sailboard 18 is larger than that of the joint of the early warning rainfall monitoring box 17, and a rotatable shielding device 26 is arranged beside the first filter plate 22 and the second filter plate 23.

The shielding device 26 comprises a fixed cylinder 27 fixed at the top of the early warning rainfall monitoring box body 17, a rotatable elastic rod 28 is arranged on the fixed cylinder 27, a sealing part 29 is arranged below the bottom of the elastic rod 28, the sealing part 29 is arranged to ensure that the sealing part can be freely sealed or switched in the using process, and the area of the sealing part 29 is larger than that of the second filter plate 23.

The first structure 24 and the second structure 25 are respectively provided with a first U-shaped water quantity monitoring pipe 30 and a second U-shaped water quantity monitoring pipe 31 inside, the volume of the rainfall monitored by the second U-shaped water quantity monitoring pipe 31 is larger than that of the first U-shaped water quantity monitoring pipe 30, and the first U-shaped water quantity monitoring pipe 30 and the second U-shaped water quantity monitoring pipe 31 are both provided with a water level sensor 32 and a float water level monitoring block 33 inside.

A water level overflow device 34 is arranged between the first U-shaped water quantity monitoring pipe 30 and the second U-shaped water quantity monitoring pipe 31, scale marks 35 and an overflow outlet 36 are arranged on the water level overflow device 34 and the second U-shaped water quantity monitoring pipe 31, an integrally formed fixed block 37 is arranged on the side wall of the first U-shaped water quantity monitoring pipe 31, and a telescopic rope 39 is arranged between the fixed block 38 and the floating water level monitoring block 33.

Cursory water level monitoring block 33 is circular structure, and is equipped with the reflection of light subsides 40 on cursory water level monitoring block 33's the side, be equipped with signal transmission pole 41 and signal transmission pole two 42 on early warning rainfall monitoring box 17's the top, cursory water level monitoring block 33's circumference is spine portion shape, first U-shaped water volume monitoring pipe 30 and second U-shaped water volume monitoring pipe 31's port department is equipped with the network grid.

The top of early warning rainfall monitoring case 17 is equipped with overflows structure 43, the middle part that overflows structure 43 is recess 44, and both sides of recess 44 are equipped with drainage groove 45, it divide into the same tapering of quartering to overflow structure 43, the detection water content of first U-shaped water content monitoring pipe 30 is less than the water content of second U-shaped water content monitoring pipe 31.

The water level sensor comprises a storage battery 46, an instruction sending device 47 and an instruction receiving device 48 which are arranged in a first U-shaped water quantity monitoring pipe 30 and a second U-shaped water quantity monitoring pipe 31, wherein a data processing module 49 is arranged above the storage battery 46, and the data processing module 49 is connected with the water level sensor 32.

The early warning rainfall monitoring device is characterized by further comprising a client matched with the device body 1, wherein a transmitting device and a receiving device are arranged on the top of the early warning rainfall monitoring box 17, and the transmitting device and the receiving device are connected with the client through a data network.

The storage battery 46, the instruction sending device 47 and the instruction receiving device 48 are electrically connected, and a transparent rectangular observation window 49 is arranged on the side wall of the early warning rainfall monitoring box 17.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.