A small watershed flood automatic warning instrument based on water power

Abstract

The present application relates to a kind of small watershed flood automatic early warning instrument based on water power, solve the existing small watershed flood monitoring and early warning equipment in bad weather, electronic equipment is vulnerable, mountain mobile signal is easily interrupted, and the early warning information of trigger mechanism is not accurate enough.The lower part of the device shell is provided with water power trigger circuit, the upper part of shell is provided with sound and light early warning circuit, the water power trigger circuit includes series water turbine and electromagnet, water turbine is arranged in the lower part of shell one side, and is placed in flood channel, the sound and light early warning circuit is provided with battery, armature switch, sound and light alarm device in series, the armature switch is provided with the reset spring of keeping open, and is driven to close by electromagnet.The present application can set different early warning flow rate value and early warning water level value, it is applicable to various different water flow characteristics river and flood channel, the early warning information of the present application is accurate, timely and efficient, stable operation, especially in mobile signal difference, circuit erection difficult remote mountain area has more popular value.

Description

Technical Field

[0001] This invention belongs to the field of hydrological monitoring equipment, and relates to a flood monitoring and early warning device, particularly to an automatic flood early warning instrument for small watersheds based on hydrodynamics. Background Technology

[0002] Flood monitoring and early warning equipment is essential for effectively preventing and controlling flood disasters and for the timely evacuation of people from dangerous areas. Small watershed flood monitoring and early warning equipment should meet the requirements of accurate early warning information, timely and efficient early warning, and stable and reliable operation. Currently, existing small watershed flood monitoring and early warning equipment can be mainly divided into two categories. The first category mainly adds early warning functions to hydrological and rainfall telemetry equipment. Its characteristic is that it can monitor water level and flow through professional hydrological and rainfall telemetry equipment, and the early warning information is relatively accurate. However, flood disasters often occur during summer thunderstorms or typhoons, and electronic equipment is easily damaged in severe weather or mobile signals are easily interrupted in mountainous areas, making it difficult to guarantee operational stability. The second category mainly achieves automatic alarms through trigger mechanisms, such as rising water levels causing a float to rise and triggering a mechanism, or changes in water flow velocity causing a pole to tilt and trigger a mechanism, etc. The disadvantage of this method is that the early warning information is not accurate enough, mainly manifested in the lack of flow velocity early warning or large errors in the predicted flow velocity value. Comprehensive analysis suggests that there is still a lack of a small watershed flood monitoring and early warning device that provides accurate early warning information, timely and efficient early warning, and stable and reliable operation. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of existing small watershed flood monitoring and early warning equipment, such as the easy damage of electronic equipment under severe weather, the easy interruption of mobile signals in mountainous areas, and the inaccuracy of early warning information triggered by the triggering mechanism. The invention provides an automatic flood early warning instrument for small watersheds based on hydrodynamics, which can automatically trigger an audible and visual alarm when the water flow velocity and water level reach the set values, thereby improving the accuracy, timeliness and reliability of flood monitoring and early warning equipment.

[0004] The technical solution adopted by the present invention to solve its technical problem is: an automatic flood early warning instrument for small watersheds based on hydrodynamics, including a housing, a hydrodynamic triggering circuit is provided at the lower part of the housing, and an audible and visual early warning circuit is provided at the upper part of the housing. The hydrodynamic triggering circuit includes a water turbine and an electromagnet connected in series. The water turbine is located on one side of the lower part of the housing and placed in the flood channel. The audible and visual early warning circuit is equipped with a battery, an armature switch, and an audible and visual alarm device connected in series. The armature switch is provided with a normally open reset spring and is driven to close by the electromagnet.

[0005] This device is installed in a flood channel. When a flood occurs, the water flow in the channel drives the turbine to rotate, thereby generating current. This current drives the electromagnet to attract the armature switch. After the armature switch is closed, the audible and visual warning circuit is activated, generating an audible and visual alarm.

[0006] Preferably, a sliding rheostat is connected in series in the hydrodynamic triggering circuit. This rheostat has a pre-warning flow rate adjustment slider for adjusting its resistance value, and the slider is mounted on the surface of the housing. When the electromagnet current is small, the magnetic attraction cannot overcome the spring force of the return spring, and the armature switch cannot be driven to close. Therefore, only when the floodwater reaches a certain flow rate can the turbine be driven to a sufficient speed to generate a sufficiently large current to drive the electromagnet, magnetically closing the armature switch and generating an alarm signal. This device uses the resistance adjustment of the sliding rheostat to control the overall resistance of the hydrodynamic triggering circuit. When the pre-warning flow rate adjustment slider is in different positions on the rheostat, the turbine speed required for the electromagnet coil to attract the armature is different. The turbine speed represents the water flow rate. Before use, the water flow rate required for the electromagnet coil to attract the armature at different positions of the rheostat should be calibrated, and the water flow rate value should be marked on different positions of the pre-warning flow rate adjustment slider. This allows for adjustment of the pre-warning flow rate threshold.

[0007] Preferably, the hydrodynamic starting circuit also includes a warning water level regulating slider connected in series as a circuit switch. The warning water level regulating slider is slidably mounted on the side of the housing and has opposing, non-contact conductive plates on it. The warning water level regulating slider consists of two non-contact conductive plates and can slide vertically as a whole. When the water level submerges the warning water level regulating slider, the two ends of the slider become conductive. The warning water level can be adjusted by moving the warning water level regulating slider up and down.

[0008] Preferably, the armature switch is a lever-type switch, with a fulcrum in the middle, a return spring at one end, and the other end suspended above the electromagnet. Alternatively, the armature switch can be configured with a return spring sleeved on the outside for reset.

[0009] Preferably, the audible and visual alarm device includes a buzzer and an alarm light.

[0010] Preferably, a solar panel for charging the battery is provided on the south-facing side of the upper part of the housing.

[0011] Preferably, the upper side wall of the housing is also provided with a working indicator light to display the battery voltage.

[0012] This device is installed vertically in the river channel. The turbine should not be installed too close to the riverbed and should be lower than the warning water level regulating vane. The warning flow velocity regulating vane and the warning water level regulating vane are slid to the required warning flow velocity and warning water level values. When the water level reaches the warning water level value and the flow velocity reaches the warning flow velocity value, the two ends of the warning water level regulating vane become conductive, generating sufficient current in the electromagnet coil. The electromagnet coil attracts the armature to form a closed circuit, and the buzzer and alarm light begin to operate.

[0013] This invention allows for the setting of different warning flow velocity and warning water level values ​​by adjusting the sliding flaps of the warning flow velocity and water level respectively. When the flow velocity and water level reach the set values, an audible and visual alarm is automatically triggered. It is applicable to rivers and flood channels with various flow characteristics. The invention is mainly composed of mechanical components, making it less affected by severe weather such as lightning. It achieves long-term autonomous operation by charging a battery with a solar panel. It has advantages such as accurate warning information, timely and efficient warnings, and stable and reliable operation. It can be used as a flood monitoring and early warning device for small watersheds, and is particularly valuable for promotion in remote mountainous areas with poor mobile signal and difficult circuit installation. Attached Figure Description

[0014] The invention will now be further described with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of a structure of the present invention.

[0016] In the diagram: 1. Water turbine, 2. Return spring, 3. Electromagnet, 4. Armature switch, 5. Storage battery, 6. Buzzer, 7. Alarm light, 8. Solar panel, 9. Working indicator light, 10. Sliding rheostat, 11. Warning flow rate regulating slide, 12. Warning water level regulating slide. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0018] Example: An automatic flood early warning device for small watersheds based on hydrodynamics, such as... Figure 1As shown. This device includes a housing, with a hydrodynamic triggering circuit at the bottom and an audible and visual warning circuit at the top. The hydrodynamic triggering circuit includes a water turbine 1, an electromagnet 3, a sliding rheostat 10, and a warning water level regulating slider 12 connected in series. The sliding rheostat 10 has a warning flow velocity regulating slider 11 for adjusting its resistance. The water turbine 1 is located on one side of the lower part of the housing and placed in the flood channel. The position of the water turbine 1 should not be close to the bottom of the channel, but should not exceed the height of the warning water level regulating slider 12. The warning flow velocity regulating slider 11 is set on the surface of the housing, and the corresponding warning flow velocity is marked on the side of the warning flow velocity regulating slider 11. The positional relationship between the warning flow velocity and the position of the sliding rheostat 10 and the warning flow velocity regulating slider 11 should be pre-calibrated. The warning water level adjusting slide 12 is slidably and adjustable on the side of the housing, and its height is adjustable. The warning water level adjusting slide 12 is provided with a conductive sheet that is arranged opposite to it but not in contact. When the water level exceeds the warning water level adjusting slide 12, the conductive sheet is turned on.

[0019] The audible and visual warning circuit is connected in series with a battery 5, an armature switch 4, and an audible and visual alarm device, which includes a buzzer 6 and an alarm light 7. The armature switch 4 has a normally open return spring 2 and is driven to close by an electromagnet 3. In this example, the armature switch 4 is a lever switch with a fulcrum in the middle, a return spring 2 below one end, and the other end suspended above the electromagnet 3. A solar panel 8 for charging the battery 5 is located on the south-facing side of the upper part of the housing. An indicator light 9 for displaying the battery voltage is also provided on the upper side wall of the housing.

[0020] In the hydrodynamic triggering circuit, a sliding rheostat is included. The sliding part of the rheostat is the warning flow rate regulating slider. When the warning flow rate regulating slider is in different positions of the rheostat, the turbine speed required for the electromagnet to attract the armature switch varies. The turbine speed represents the water flow velocity. Before use, the water flow velocity required for the electromagnet to attract the armature switch at different positions of the rheostat should be calibrated, and the water flow velocity value should be marked on the different positions of the rheostat. The hydrodynamic triggering circuit also includes a warning water level regulating slider, which consists of conductive plates with non-contact ends. The warning water level regulating slider can slide up and down as a whole. When the water level submerges the warning water level regulating slider, the two ends of the slider become conductive.

[0021] In use, install this device vertically in the flood channel. The turbine should not be installed too close to the bottom of the channel and should be lower than the warning water level regulating slide. Slide the warning flow velocity regulating slide and the warning water level regulating slide to the required warning flow velocity and warning water level values. When the water level reaches the warning water level value and the flow velocity reaches the warning flow velocity value, the two conductive plates of the warning water level regulating slide in the hydrodynamic trigger circuit are connected, generating sufficient current in the electromagnet. The electromagnet attracts the armature switch, forming a closed circuit in the audible and visual warning circuit, and the buzzer and alarm light start working. The working indicator light is connected to the battery and displays the battery voltage in real time. The solar panel is connected to the battery and charges the battery.

Claims

1. An automatic flood early warning instrument for small watersheds based on hydrodynamics, characterized in that: The application relates to a water power triggered flood warning device, which comprises a shell, a water power triggered circuit arranged at the lower part of the shell, and a sound and light warning circuit arranged at the upper part of the shell. The water power triggered circuit comprises a water turbine and an electromagnet in series, the water turbine is arranged at one side of the lower part of the shell and placed in a flood channel, the sound and light warning circuit comprises a storage battery, a armature switch and a sound and light alarm device in series, the armature switch is provided with a reset spring for keeping open and is driven to close by the electromagnet.

2. The water-power-based small watershed flood automatic warning instrument according to claim 1, characterized in that: A sliding rheostat is further arranged in series on the loop of the water power triggered circuit, the sliding rheostat is provided with a warning flow speed adjusting slide piece for adjusting the resistance value, the warning flow speed adjusting slide piece is arranged on the surface of the shell, a warning water level adjusting slide piece is further arranged in series on the loop of the water power triggered circuit as a circuit switch, the warning water level adjusting slide piece is arranged on the side of the shell and can be adjusted up and down, and the warning water level adjusting slide piece is provided with conductive pieces arranged oppositely and without contact.

3. The water-power-based small watershed flood automatic warning instrument according to claim 1, characterized in that: The armature switch is a lever type switch, the middle part of the armature switch is provided with a fulcrum, the reset spring is arranged below one end of the armature switch, and the other end of the armature switch is suspended above the electromagnet.

4. The automatic flood warning device based on water power in small watershed according to claim 1, characterized in that: The sound and light alarm device comprises a buzzer and an alarm lamp.

5. The water-power-based small watershed flood automatic warning instrument according to claim 1, characterized in that: The upper part of the shell is provided with a solar panel arranged on the side facing the south for charging the storage battery. The sidewall of the upper part of the shell is further provided with a working indicating lamp for displaying the voltage of the storage battery.

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