A multifunctional power supply system for rain gauge calibrators

Abstract

This application discloses a multifunctional power supply system for a rain gauge calibrator, belonging to the field of rainwater monitoring technology. It includes a waterproof box, a cover, a battery box, a battery, a push-button switch, a counter, a button, and an indicator light. The cover is fixedly mounted on the waterproof box; the battery box contains several batteries connected in series; the counter is fixedly mounted on the waterproof box; the push-button switch is also fixedly mounted on the waterproof box; the push-button switch is electrically connected to the battery box and the counter via wires and quick connectors; the push-button switch has a button and an indicator light. This application provides a flexible and adaptable power supply solution: the battery box is compatible with both disposable and rechargeable button batteries; when a battery or counter fails, it can be quickly replaced individually; it has high-reliability waterproof protection; and by combining passive heat dissipation and active regulation, it can quickly balance the temperature and humidity inside the box, preventing components from aging and being damaged due to high temperature and humidity.

Description

Technical Field

[0001] This application relates to the field of rainwater monitoring technology, and more specifically, to a multifunctional power supply system for a rain gauge calibrator. Background Technology

[0002] In fields such as meteorological observation and hydrological monitoring, rainfall calibration instruments are key equipment to ensure data accuracy.

[0003] Existing technology CN108427149A provides an automatic rain gauge and its usage method, including a housing. A standard ball for holding water is disposed within the housing. The lower end of the standard ball is connected via pipes to an inlet solenoid valve and an outlet solenoid valve. The inlet solenoid valve is connected to an inlet pipe via a water pump. A rain gauge regulating valve connected to the outlet solenoid valve is disposed within the housing. A rain gauge sensor for collecting water droplets is disposed below the output end of the rain gauge regulating valve. A control system for controlling the inlet solenoid valve, the outlet solenoid valve, the water pump, and the rain gauge regulating valve is also disposed within the housing. The control system is electrically connected to a counting switch of the rain gauge sensor. This automatic rain gauge is compact, portable, and easy to use.

[0004] While the existing technical solutions described above can achieve the relevant beneficial effects through their structure, they still have the following drawbacks: 1. The counter and button battery are connected by direct welding, making it impossible to maintain the counter module without power. Furthermore, if the counter or battery malfunctions, the entire unit must be replaced, increasing spare parts costs and wasting manpower on disassembly and installation. 2. The battery and counter generate heat during operation. If this heat cannot be dissipated in time, it can damage the battery, counter, or other electronic components, affecting their lifespan.

[0005] In view of this, we propose a multifunctional power supply system for rain gauge calibrators. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] The purpose of this application is to provide an energy-saving metallurgical smelting furnace based on intelligent control and its usage method, solving the technical problems mentioned in the background art above, and realizing a flexible and adaptable power supply solution: the battery box is compatible with both CR2032 (disposable) and LIR2032 (rechargeable) button batteries, allowing users to flexibly choose according to usage frequency; when the battery or counter fails, the battery or counter can be quickly replaced individually, improving work efficiency and reducing fault repair costs; this invention has high reliability and waterproof protection; combining passive heat dissipation and active regulation, it can quickly balance the temperature and humidity inside the box, avoiding component aging and damage due to high temperature and high humidity.

[0008] 2. Technical Solution

[0009] This application provides a multifunctional power supply system for a rain gauge calibrator, including: a waterproof box, a box cover, a battery box, a storage battery, a push switch, a counter, a button, and an indicator light;

[0010] The waterproof box has a detachable lid; both the waterproof box and the lid are made of 304 stainless steel.

[0011] A battery box is fixedly installed inside the waterproof box, and several batteries are detachably and fixedly installed inside the battery box, with each battery connected in series.

[0012] A counter is detachably and fixedly mounted on the waterproof box; a push-button switch is detachably and fixedly mounted on the waterproof box; the push-button switch is electrically connected to the battery box and the counter via wires and quick connectors.

[0013] The push-button switch is equipped with a button and an indicator light. The cover has a pre-drilled circular operating hole, inside which a double-layered silicone waterproof sleeve is installed to ensure that the button remains sealed during operation.

[0014] The above technical solution securely mounts the waterproof box to the inner wall of the rain gauge housing, allowing the button to extend out of the housing and the indicator light to align with the outer wall. The battery powers the counter via a push-button switch. Users can control the counter's operation by pressing the switch. When the battery or counter malfunctions and needs replacement, the box cover can be quickly opened for replacement or repair, meeting the long-term operational needs of harsh environments such as weather stations and hydrological monitoring stations.

[0015] As an optional solution of this utility model, the waterproof box is provided with an IP67-rated Type-C charging port on the side. The charging port is equipped with a dust plug and a waterproof cover, and a TC4056 charging management chip is connected in series inside: it supports 5V / 500mA constant current charging, automatically identifies the type of rechargeable battery, and automatically switches to trickle charging mode after charging is completed to avoid overcharging.

[0016] The above technical solution allows the battery in the battery box to be charged via Type-C.

[0017] As an optional solution of this utility model, a counter positioning box is fixedly installed inside the battery box, and the counter positioning box is used for the installation and positioning of the counter.

[0018] The counter positioning box is made of flame-retardant ABS material and has four positioning pins inside that fit precisely with the positioning holes at the bottom of the counter.

[0019] The counter positioning box is designed with elastic buckles on both sides, and the ends of the buckles are equipped with anti-slip teeth. When the counter is inserted, it will automatically lock, which will ensure stability and facilitate disassembly.

[0020] As an optional solution of this utility model, a vent hole is provided on the side wall of the battery box, and a waterproof and breathable membrane is fixedly provided at both ends of the vent hole.

[0021] The above technical solution ensures IP67 waterproof rating while enabling air exchange between the battery compartment and the outside, thus mitigating the problem of condensation buildup caused by sudden temperature changes.

[0022] As an optional solution of this utility model, the waterproof box is provided with two layers of protrusions around its perimeter, and a sealing ring groove is provided at the bottom of the protrusions, with a rubber sealing ring snapped into the sealing ring groove.

[0023] The lid has two grooves, and the bottom of the grooves has an annular groove that matches the corresponding sealing ring groove.

[0024] The above technical solution, through the use of two layers of protrusions and a rubber sealing ring, ensures a tight seal between the waterproof box and the lid, preventing rainwater from entering the waterproof box and damaging electronic components. This improves the waterproofing effect.

[0025] As an optional solution of this utility model, a temperature sensor and a humidity sensor are fixedly installed on the inner wall of the waterproof box; the temperature sensor and humidity sensor monitor the temperature and humidity inside the waterproof box in real time.

[0026] As an optional embodiment of this utility model, multiple cooling oil pipes are fixedly installed on the inner wall of the waterproof box, and a cooling oil storage tank is fixedly installed on the outer wall of the waterproof box. The cooling oil pipes are connected to the cooling oil storage tank through two conduits. The cooling oil storage tank and the cooling oil pipes are filled with cooling oil.

[0027] The above technical solution uses cooling oil pipes to cool and dissipate heat inside the waterproof box.

[0028] As an optional embodiment of this utility model, a ventilation slot is provided on the waterproof box, and a sealing mechanism and a ventilation fan are fixedly installed on the waterproof box; the position of the ventilation fan corresponds to the ventilation slot. A 50-mesh stainless steel dustproof mesh is embedded in the ventilation slot;

[0029] The sealing mechanism includes a miniature motor and a rotating plate;

[0030] A micro motor is fixedly mounted on the side wall of the waterproof box, and a rotating plate is coaxially fixed to the output end of the micro motor; a sealing rubber gasket is fixedly mounted on the rotating plate; ventilation holes are provided on the rotating plate and the sealing rubber gasket. The sealing rubber gasket is in frictional contact with the inner wall of the waterproof box. The sealing rubber gasket and the inner wall of the waterproof box maintain a 0.1mm interference fit to form a surface contact seal.

[0031] The above technical solution involves starting a micro motor to drive the rotating plate to rotate. When the ventilation holes on the rotating plate are aligned with the ventilation slots on the waterproof box, the internal space of the waterproof box is connected to the outside. The ventilation fan facilitates air exchange between the inside and outside of the waterproof box, promoting rapid cooling inside the waterproof box.

[0032] As an optional solution of this utility model, a PLC control module is fixedly installed on the waterproof box. The PLC control module is connected to the temperature sensor, humidity sensor, ventilation fan, and micro motor network.

[0033] As an optional solution of this utility model, a fixing plate is fixedly provided on both sides of the bottom of the waterproof box, and bolt holes are provided at both ends of the fixing plate. The waterproof box is fixedly installed into the interior of the waterproof box 1 through the bolt holes.

[0034] The top of the waterproof box is equipped with four positioning blocks; threaded holes are provided on the positioning blocks.

[0035] Four protrusions are fixedly installed on the box lid, and light holes are provided on the protrusions.

[0036] The waterproof box and the lid are fixedly connected by screws, threaded holes, and open holes.

[0037] As an optional solution of this utility model, the inner wall of the waterproof box is reserved with installation positions for electronic components, and two extended installation areas are planned inside the waterproof box for installing other electronic components.

[0038] The waterproof box has stepped cable trays on its left and rear walls, which are sealed with plugs to prevent moisture from entering. The plugs can be removed to route cables when needed.

[0039] 3. Beneficial effects

[0040] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0041] 1. This invention provides a flexible and adaptable power supply solution: the battery box is compatible with both CR2032 (disposable) and LIR2032 (rechargeable) button batteries, allowing users to choose flexibly according to usage frequency; it integrates over-discharge protection and intelligent charging management, extending battery life while reducing maintenance costs and meeting the needs of long-term unattended outdoor operation. When a battery or counter fails, it allows for quick and individual replacement of the battery or counter, improving work efficiency and reducing fault repair costs.

[0042] 2. This invention features highly reliable waterproof protection: It adopts a "labyrinth-style + double lip seal" composite sealing structure formed by double-layer bosses and rubber sealing rings, combined with IP68 protection design, which can effectively resist the intrusion of rainwater and moisture, ensuring that electronic components work stably in harsh environments such as rainstorms and high humidity, and solving the problem of failure caused by water ingress in traditional equipment.

[0043] 3. Highly efficient and intelligent heat dissipation and dehumidification: Combining passive heat dissipation (air circulation through vents and a waterproof and breathable membrane, and heat dissipation through cooling oil pipes) with active regulation (temperature / humidity sensor linked to PLC control module, which activates ventilation fan and sealing mechanism when threshold is exceeded), the temperature and humidity inside the box can be quickly balanced to prevent components from aging and being damaged due to high temperature and high humidity. Attached Figure Description

[0044] Figure 1 This is a cross-sectional schematic diagram of the overall structure of the power supply system for a multifunctional rain gauge calibrator disclosed in a preferred embodiment of this application;

[0045] Figure 2 A schematic diagram of the assembled state of the waterproof box and cover of the power supply system for a multifunctional rain gauge calibrator disclosed in a preferred embodiment of this application;

[0046] Figure 3 A schematic diagram of the cover of a multifunctional rain gauge power supply system disclosed in a preferred embodiment of this application;

[0047] Figure 4 A schematic diagram of the sealing mechanism of a multifunctional rain gauge power supply system disclosed in a preferred embodiment of this application;

[0048] The following are the labels in the diagram: 1. Waterproof box; 2. Box cover; 3. Battery box; 4. Battery; 5. Push switch; 6. Counter; 7. Button; 8. Indicator light; 9. Sealing mechanism; 10. Counter positioning box; 11. Boss; 12. Sealing ring groove; 13. Ventilation fan; 14. Fixing plate; 15. Bolt hole; 16. Temperature sensor; 17. Vent hole; 18. Quick connector; 19. Positioning block; 20. Threaded hole; 21. Groove; 22. Annular groove; 23. Protrusion; 24. Clear hole; 25. Cooling oil storage tank; 26. Cooling oil pipe; 27. Humidity sensor; 91. Micro motor; 92. Rotating plate; 93. Vent hole; 94. Sealing rubber gasket. Detailed Implementation

[0049] The present application will be further described in detail below with reference to the accompanying drawings.

[0050] Reference Figure 1 and Figure 2 This application provides a multifunctional rain gauge power supply system, including a waterproof box 1, a box cover 2, a battery box 3, a storage battery 4, a push switch 5, a counter 6, a button 7, and an indicator light 8;

[0051] The waterproof box 1 is detachably and fixedly equipped with a lid 2; the waterproof box 1 and the lid 2 are made of 304 stainless steel.

[0052] A battery box 3 is fixedly installed inside the waterproof box 1. Several batteries 4 are detachably fixed inside the battery box 3, and each battery 4 is connected in series.

[0053] A counter 6 is detachably and fixedly mounted on the waterproof box 1; a push switch 5 is detachably and fixedly mounted on the waterproof box 1; the push switch 5 is electrically connected to the battery box 3 and the counter 6 via a wire and a quick connector 18.

[0054] The push-button switch 5 is equipped with a button 7 and an indicator light 8. The cover 2 has a pre-drilled circular operating hole, and a double-layer silicone waterproof sleeve is installed inside the operating hole (the inner layer is interference-fitted with the button 7, and the outer layer is fixed by a threaded pressure ring) to ensure that the button 7 remains sealed when it is in operation.

[0055] The push switch 5 is a self-locking waterproof button with an integrated STM8S003 microcontroller: a short press (lasting less than one second) turns the power on or off, and a long press (lasting more than three seconds) enters a low-power mode with a standby current of less than five microamps; the indicator light 8 uses a three-color LED (red / green / blue) to provide feedback on the status through the flashing frequency: solid green indicates normal operation, slow red flashing indicates battery level <20%, and flashing blue indicates charging.

[0056] The battery box 3 is made of ABS engineering plastic injection molding. It has multiple independent compartments inside and is compatible with both CR2032 and LIR2032 button batteries. Gold-plated spring contacts are embedded at the bottom of the compartments, and the battery 4 is pressed into place by a transparent polycarbonate cover at the top. The transparent polycarbonate cover has a snap-on lock.

[0057] The battery 4 is connected in series, and a protection circuit with nickel strip connection is integrated on the back of the battery box 3, including an SMD fuse and an over-discharge protection IC. When the voltage of a single battery cell is lower than 2.0V, the output is automatically cut off.

[0058] Counter 6 is connected to waterproof box 1 via a magnetic Pogo Pin interface, and the interface is sealed with 704 silicone rubber. The connecting wires are twisted-pair shielded wires with the shielding layer grounded to effectively suppress electromagnetic interference.

[0059] In this technical solution, the waterproof box 1 is fixedly installed on the inner wall of the rain gauge housing, so that the button 7 protrudes from the rain gauge housing, and the indicator light 8 is aligned with the outer wall of the rain gauge housing. The battery 4 supplies power to the counter 6 via a push-button switch 5. The user can control the power-on and power-off operation of the counter 6 via the push-button switch 5. When the battery 4 or the counter 6 malfunctions and needs to be replaced, the box cover 2 can be quickly opened to replace or repair the battery 4 or the counter 6, meeting the long-term use needs of harsh environments such as weather stations and hydrological monitoring stations.

[0060] Furthermore, the waterproof case 1 has an IP67-rated Type-C charging port (with a dust plug and waterproof cover) on the side, and a TC4056 charging management chip is connected in series inside: it supports 5V / 500mA constant current charging, automatically identifies the type of rechargeable battery, and automatically switches to trickle mode (current < 10mA) after charging is completed to avoid overcharging.

[0061] In this technical solution, the battery 4 inside the battery box 3 can be charged via Type-C.

[0062] Furthermore, a counter positioning box 10 is fixedly installed inside the battery box 3, which is used for the installation and positioning of the counter 6.

[0063] The counter positioning box 10 is made of flame-retardant ABS material (UL94V0 grade) and has four positioning pins inside, which are precisely matched with the positioning holes at the bottom of the counter 6.

[0064] The counter positioning box 10 is designed with elastic buckles on both sides, and the buckle ends are equipped with anti-slip teeth. When the counter 6 is inserted, it will automatically lock. The insertion and removal force is controlled between five and eight Newtons, which ensures both stability and easy disassembly.

[0065] Furthermore, a vent hole 17 is provided on the side wall of the battery box 3, and a waterproof and breathable membrane is fixedly provided at both ends of the vent hole 17.

[0066] Both ends of the vent 17 are fixed with an ePTFE waterproof and breathable membrane using ultrasonic welding. The membrane is 0.1 mm thick and has an air permeability of ≥500 ml / min·cm. 2 @7kPa: The outer membrane is covered with a dustproof mesh to prevent insects or particles from clogging it; this design ensures an IP67 waterproof rating while allowing air exchange between the battery compartment and the outside, mitigating the problem of condensation buildup caused by sudden temperature changes.

[0067] Refer to convex 1 and Figure 3 The waterproof box 1 has two layers of protrusions 11 around its perimeter. The bottom of the protrusions 11 has a sealing ring groove 12, and a rubber sealing ring is snapped into the sealing ring groove 12.

[0068] The lid 2 has two grooves 21, and the bottom of the grooves 21 has an annular groove 22, which is adapted to the corresponding sealing ring groove 12.

[0069] In this technical solution, the use of two layers of protrusions and a rubber sealing ring ensures a tight seal between the waterproof box 1 and the cover 2, preventing rainwater from entering the waterproof box 1 and damaging electronic components. This forms a labyrinth-style + double-lip seal composite sealing structure, improving the waterproof effect.

[0070] Furthermore, a temperature sensor 16 and a humidity sensor 27 are fixedly installed on the inner wall of the waterproof box 1;

[0071] Temperature sensor 16 and humidity sensor 27 monitor the temperature and humidity inside the waterproof box 1 in real time.

[0072] Furthermore, multiple cooling oil pipes 26 are fixedly installed on the inner wall of the waterproof box 1, and a cooling oil storage tank 25 is fixedly installed on the outer wall of the waterproof box 1. The cooling oil pipes 26 are connected to the cooling oil storage tank 25 through two conduits. The cooling oil storage tank 25 and the cooling oil pipes 26 are filled with cooling oil.

[0073] In this technical solution, the interior of the waterproof box 1 is cooled and dissipated through the cooling oil pipe 26.

[0074] Reference Figure 1 and Figure 4 The waterproof box 1 has a ventilation slot, and a sealing mechanism 9 and a ventilation fan 13 are fixedly installed on the waterproof box 1; the position of the ventilation fan 13 corresponds to the ventilation slot.

[0075] The ventilation duct is fitted with a 50-mesh stainless steel dustproof mesh, 0.3mm thick;

[0076] The sealing mechanism 9 includes a micro motor 91 and a rotating plate 92;

[0077] A micro motor 91 is fixedly mounted on the side wall of the waterproof box 1. A rotating plate 92 is coaxially fixedly mounted on the output end of the micro motor 91. A sealing rubber gasket 94 is fixedly mounted on the rotating plate 92. Ventilation holes 93 are provided on the rotating plate 92 and the sealing rubber gasket 94. The sealing rubber gasket 94 is in frictional contact with the inner wall of the waterproof box 1. The sealing rubber gasket 94 and the inner wall of the waterproof box 1 maintain a 0.1mm interference fit to form a surface contact seal. When the rotating plate rotates 90 degrees, the ventilation hole 93 is completely aligned with the ventilation slot, indicating ventilation. When rotated 90 degrees in the opposite direction, the sealing rubber gasket 94 completely covers the ventilation slot (sealed state). Combined with the waterproof design of the ventilation fan 13, this ensures that the IP68 protection level is not affected when not ventilating.

[0078] In this technical solution, the micro motor 91 is started to drive the rotating plate 92 to rotate. When the ventilation hole 93 on the rotating plate 92 is aligned with the ventilation groove on the waterproof box 1, the internal space of the waterproof box 1 is connected to the outside. The ventilation fan 13 realizes the exchange of air between the inside and outside of the waterproof box 1, which promotes the rapid cooling of the inside of the waterproof box 1.

[0079] Furthermore, a PLC control module is fixedly installed on the waterproof box 1. The PLC control module is networked with temperature sensor 16, humidity sensor 27, ventilation fan 13, and micro motor 91. The PLC control module is a Siemens S7-1200 compact PLC module, and the module is covered with an ABS protective shell. The PLC control module draws power from battery 4 via a DC-DC power supply module. An M3 copper pillar is installed at the bottom of the PLC control module. A double-layer insulation component is installed between the M3 copper pillar and the waterproof box. The lower layer of the double-layer insulation component is a 0.5mm thick polytetrafluoroethylene gasket, which completely covers the contact area between the copper pillar and the waterproof box; the upper layer is a polyimide sleeve, which is fitted over the outside of the copper pillar to isolate the metal contact between the copper pillar and the module bracket. Through the combination of the insulating gasket and the sleeve, the copper pillar only serves as a structural support (using the high strength of copper to ensure a stable connection), while the insulating material blocks the metal conductive path, achieving electrical isolation between the PLC module and the waterproof box.

[0080] Furthermore, a fixing plate 14 is fixedly installed on both sides of the bottom of the waterproof box 1, and bolt holes 15 are provided at both ends of the fixing plate 14. The waterproof box 1 is fixedly installed inside the waterproof box 1 through the bolt holes 15.

[0081] The top of the waterproof box 1 is provided with four positioning blocks 19; the positioning blocks 19 are provided with threaded holes 20;

[0082] Four protrusions 23 are fixedly provided on the lid 2, and light holes 24 are provided on the protrusions 23.

[0083] In this technical solution, the waterproof box 1 and the box cover 2 are fixedly connected by a screw, a threaded hole 20 and a smooth hole 24.

[0084] Furthermore, the inner wall of the waterproof box 1 is reserved with mounting positions for electronic components, and two extended mounting areas are planned inside the waterproof box 1 for mounting other electronic components;

[0085] Stepped cable routing channels are provided on the left side wall (below the PLC module) and rear wall of waterproof box 1. The cable routing channels are sealed with sealing plugs to prevent moisture from entering. When cable routing is required, the sealing plugs can be removed.

[0086] The working principle of this multifunctional rain gauge power supply system is as follows: A waterproof box 1 is fixedly installed on the inner wall of the rain gauge housing, allowing the button 7 to extend out of the housing. An indicator light 8 is aligned with the outer wall of the housing, and a waterproof membrane and cover are provided on the outside of the indicator light 8. The battery 4 supplies power to the counter 6 via a push-button switch 5. The counter 6 records rainfall data during normal operation. The user can control the power-on and power-off operation of the counter 6 via the push-button switch 5. When the battery 4 or the counter 6 malfunctions and needs replacement, the box cover 2 can be quickly opened for replacement or repair. Under normal circumstances, the interior of the waterproof box 1 is cooled by the vent 17 and the cooling oil pipe 26. When the temperature sensor 16 or the humidity sensor 27 detects that the temperature or humidity inside the waterproof box 1 is greater than the set threshold, the micro motor 91 is started to drive the rotating plate 92 to rotate. When the ventilation hole 93 on the rotating plate 92 is aligned with the ventilation groove on the waterproof box 1, the interior space of the waterproof box 1 is connected to the outside. The ventilation fan 13 realizes the exchange of air between the inside and outside of the waterproof box 1, which promotes the rapid cooling of the interior of the waterproof box 1.

[0087] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-functional rain gauge calibrator power supply system, comprising: Waterproof box, box cover, battery box, storage battery, push switch, counter, button and indicator light, characterized in that: The waterproof box has a detachable and fixed cover; a battery box is fixedly installed inside the waterproof box, and several batteries are detachably and fixedly installed inside the battery box, with each battery connected in series. A counter is detachably and fixedly mounted on the waterproof box; a push-button switch is detachably and fixedly mounted on the waterproof box; the push-button switch is electrically connected to the battery box and the counter via wires and quick connectors. The push-button switch is equipped with a button and an indicator light; the cover has a pre-drilled circular operating hole, and a double-layer silicone waterproof sleeve is installed inside the operating hole to ensure that the button remains sealed when it is operated.

2. The multi-functional rain gauge calibrator power supply system of claim 1, wherein: The waterproof case has an IP67-rated Type-C charging port on the side, which is equipped with a dust plug and a waterproof cover. The port is connected in series with a TC4056 charging management chip.

3. The multi-functional rain gauge calibrator power supply system of claim 1, wherein: The battery box has ventilation holes on its side wall, and waterproof and breathable membranes are fixedly installed at both ends of the ventilation holes.

4. The multi-functional rain gage calibrator power supply system of claim 1, wherein: The waterproof box has two layers of protrusions around its perimeter, with a sealing ring groove at the bottom of each protrusion. A rubber sealing ring is fitted into the sealing ring groove. The box lid has two layers of grooves, with an annular groove at the bottom of each groove. The annular groove is matched with the corresponding sealing ring groove.

5. The multi-functional rain gage calibrator power supply system of claim 1, wherein: Multiple cooling oil pipes are fixedly installed on the inner wall of the waterproof box, and a cooling oil storage tank is fixedly installed on the outer wall of the waterproof box. The cooling oil pipes are connected to the cooling oil storage tank through two conduits. The cooling oil storage tank and the cooling oil pipes are filled with cooling oil.

6. The multi-functional rain gage calibrator power supply system of claim 1, wherein: Temperature and humidity sensors are fixedly installed on the inner wall of the waterproof box; the temperature and humidity sensors monitor the temperature and humidity inside the waterproof box in real time. The waterproof box has a ventilation slot, and a sealing mechanism and a ventilation fan are fixedly installed on the waterproof box; the position of the ventilation fan corresponds to the ventilation slot, and the ventilation slot is embedded with a 50-mesh stainless steel dustproof mesh.

7. The multi-functional rain gage calibrator power supply system of claim 6, wherein: The sealing mechanism includes a miniature motor and a rotating plate; A micro motor is fixedly installed on the side wall of the waterproof box, and a rotating plate is coaxially fixedly installed on the output end of the micro motor; a sealing rubber gasket is fixedly installed on the rotating plate; ventilation holes are provided on the rotating plate and the sealing rubber gasket; the sealing rubber gasket maintains a 0.1mm interference fit with the inner wall of the waterproof box to form a surface contact seal.

8. The multi-functional rain gage calibrator power supply system of claim 1, wherein: The waterproof box has reserved mounting positions for electronic components on its inner wall. Two extended mounting areas are planned inside the waterproof box for installing other electronic components. Stepped cable trays are opened on the left and rear walls of the waterproof box. The cable trays are sealed with sealing plugs to prevent moisture from entering.

9. The multifunctional rain gauge power supply system according to claim 1, characterized in that: A counter positioning box is fixedly installed inside the battery box. The counter positioning box is used for the installation and positioning of the counter. The counter positioning box is designed with elastic buckles on both sides, and the ends of the buckles are equipped with anti-slip teeth. When the counter is inserted, it will automatically lock.

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