Anti-overflow and anti-soaking protection device for weighing type rainfall sensor
By installing an intelligent water level monitoring and alarm system on the weighing precipitation meter, the problem of core components being soaked and damaged during heavy rainfall was solved, enabling timely alarms and handling, and avoiding equipment damage and economic losses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUODIAN COUNTY METEOROLOGICAL BUREAU
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-19
AI Technical Summary
Existing weighing-type precipitation observation equipment lacks protection under heavy rainfall conditions, resulting in core components being soaked and damaged by rainwater, causing economic losses.
An intelligent water level monitoring and alarm system was designed, comprising a mounting bracket, connecting rod, float, wire, switch, and water level detection alarm. This system monitors the water level and alarms when the water level reaches the warning level, notifying the duty officer to handle the situation promptly.
It effectively prevents rainwater from overflowing and accumulating in the water tank, avoids damage to the core components of the equipment, and reduces economic losses.
Smart Images

Figure CN224262601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precipitation observation technology, and in particular to a water overflow and immersion protection device for a weighing precipitation sensor. Background Technology
[0002] In my country, weighing-type automatic precipitation monitoring equipment is widely used for winter precipitation observation. Its core components are gravity sensors and their signal processing units, which are expensive. However, currently used weighing-type precipitation monitoring instruments lack protection for their core components, posing a risk of damage from rainwater immersion during heavy rainfall in the flood season. For example, a certain station used a DSC1 type weighing-type precipitation monitoring instrument in winter, but continued to use it without proper protection the following spring. During a summer rainstorm, the internal water tank overflowed. Because the connection between the instrument base and the outer cylinder is sealed, the overflowing water could not drain and accumulated inside the outer cylinder. Since the gravity sensor and its signal processing unit are located inside the base under the water tank, the core components were submerged and damaged, and the equipment could not be repaired even after being sent back to the manufacturer, resulting in an economic loss of over 30,000 yuan.
[0003] Therefore, it is necessary to provide a new anti-overflow and anti-immersion protection device for weighing precipitation sensors to solve the above-mentioned technical problems. Utility Model Content
[0004] The technical problem solved by this utility model is to provide a weighing rain sensor anti-overflow and anti-immersion protection device that is easy to use, can monitor and alarm the water level in the water tank, can remind staff to take action, can prevent rainwater from overflowing and forming water accumulation in the internal water tank, and can avoid damage to the core components of the equipment by rainwater immersion, thus avoiding significant economic losses.
[0005] To solve the above-mentioned technical problems, the present invention provides a weighing precipitation sensor anti-overflow and anti-immersion protection device comprising: a mounting bracket fixedly installed on the weighing precipitation meter and a water level detection alarm located on one side of the weighing precipitation meter; a connecting rod fixedly installed at the bottom of the mounting bracket; a switch fixedly installed at the bottom end of the connecting rod; a float slidably sleeved on the outer side of the bottom end of the connecting rod; the float being slidably and sealingly connected to the connecting rod; and the switch being located inside the float.
[0006] Preferably, the weighing precipitation meter includes a base plate, a weighing precipitation sensor is fixedly installed on the top of the base plate, a water tank is placed on the top of the weighing precipitation sensor, and a protective ring is fixedly installed on the top of the base plate and fitted around the outside of the water tank.
[0007] Preferably, the mounting bracket is fixedly mounted on the protective ring.
[0008] Preferably, the switch is electrically connected to the water level detection alarm via a wire, with one end of the wire near the switch located inside the connecting rod.
[0009] Compared with related technologies, the anti-overflow and anti-immersion protection device for the weighing precipitation sensor provided by this utility model has the following beneficial effects:
[0010] This utility model provides a water overflow and immersion protection device for a weighing precipitation sensor. It consists of an intelligent water level monitoring and alarm system, which is formed by adding a mounting bracket, connecting rod, float, wire, switch, and water level detection alarm to the weighing precipitation meter. When the water level in the internal water tank of the weighing precipitation meter rises to the warning level due to rainfall accumulation, the intelligent water level monitoring and alarm system will sound an alarm via buzzer and notify the duty officer through WeChat, telephone, SMS, and other means, enabling the duty officer to take timely action. This prevents rainwater from overflowing from the internal water tank and forming water accumulation, avoiding damage to the core components of the equipment from rainwater immersion and causing significant economic losses. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of a preferred embodiment of the anti-overflow and anti-immersion protection device for the weighing precipitation sensor provided by this utility model.
[0012] The following are labeled in the diagram: 1. Mounting bracket, 2. Connecting rod, 3. Float, 4. Wire, 5. Switch, 6. Water level detection alarm, 7. Weighing-type precipitation meter. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0014] Please refer to the following: Figure 1 ,in, Figure 1 This is a schematic diagram of a preferred embodiment of the anti-overflow and anti-immersion protection device for a weighing precipitation sensor provided by this utility model. The anti-overflow and anti-immersion protection device for a weighing precipitation sensor includes: a mounting bracket 1 fixedly installed on a weighing precipitation meter 7 and a water level detection alarm 6 located on one side of the weighing precipitation meter 7. A connecting rod 2 is fixedly installed at the bottom of the mounting bracket 1, and a switch 5 is fixedly installed at the bottom end of the connecting rod 2. A float 3 is slidably sleeved on the outer side of the bottom end of the connecting rod 2. The float 3 is slidably and sealingly connected to the connecting rod 2, and the switch 5 is located inside the float 3.
[0015] The weighing precipitation meter 7 includes a base plate 71, a weighing precipitation sensor 72 is fixedly installed on the top of the base plate 71, a water tank 73 is placed on the top of the weighing precipitation sensor 72, and a protective ring 74 is fixedly installed on the top of the base plate 71 and sleeved on the outside of the water tank 73.
[0016] The mounting bracket 1 is fixedly mounted on the protective ring 74.
[0017] The switch 5 is electrically connected to the water level detection alarm 6 via a wire 4, with one end of the wire 4 near the switch 5 located inside the connecting rod 2.
[0018] Install mounting bracket 1 (aluminum alloy bracket) on the protective ring 74 of the weighing precipitation meter 7. Install connecting rod 2, float ball 3, wire 4 and switch 5 on mounting bracket 1 and make the bottom of connecting rod 2 four-fifths of the overall height of water tank 73 from the bottom of water tank 73, leaving one-fifth of the height space for the duty officer to fetch water and handle it.
[0019] When rainfall occurs, the water level in the water tank 73 gradually rises. When the water level reaches the suspension height of the float 3, the float 3 moves upward due to buoyancy. When the bottom of the float 3 contacts the switch 5 and triggers it, the water level detection alarm 6 receives the alarm signal, the alarm light flashes, and the buzzer sounds. Simultaneously, the system notifies the duty officer via WeChat, telephone, and SMS. The duty officer can see the flashing alarm light and hear the buzzer through the video conferencing monitoring system, or arrive at the scene immediately after receiving the notification to remove most of the water from the instrument's water tank 73. This causes the float 3 to move downward due to its own weight, disconnecting the switch 5 inside the float 3. The water level detection alarm 6 then stops alarming and sending messages, thus preventing the water tank inside the weighing precipitation meter 7 from overflowing and submerging the gravity sensor and its signal processing unit at the bottom, which could damage the core components of the equipment.
[0020] Compared with related technologies, the anti-overflow and anti-immersion protection device for the weighing precipitation sensor provided by this utility model has the following beneficial effects:
[0021] This utility model provides a water overflow and immersion protection device for a weighing precipitation sensor. It consists of an intelligent water level monitoring and alarm system constructed by adding a mounting bracket 1, connecting rod 2, float 3, wire 4, switch 5, and water level detection alarm 6 to the weighing precipitation meter 7. When the water level in the internal water tank 73 of the weighing precipitation meter 7 rises to the warning level due to rainfall accumulation, the intelligent water level monitoring and alarm system will sound an alarm via buzzer and notify the duty officer through various means such as WeChat, telephone, and SMS, enabling the duty officer to take timely action. This prevents rainwater from overflowing from the internal water tank and forming water accumulation, avoiding damage to the core components of the equipment from rainwater immersion and causing significant economic losses.
[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A water overflow and immersion protection device for a weighing precipitation sensor, characterized in that, include: A mounting bracket is fixedly installed on a weighing precipitation meter, and a water level detection alarm is located on one side of the weighing precipitation meter. A connecting rod is fixedly installed at the bottom of the mounting bracket, and a switch is fixedly installed at the bottom end of the connecting rod. A float is slidably sleeved on the outer side of the bottom end of the connecting rod. The float is slidably and sealingly connected to the connecting rod, and the switch is located inside the float.
2. The anti-overflow and anti-immersion protection device for the weighing precipitation sensor according to claim 1, characterized in that, The weighing precipitation meter includes a base plate, a weighing precipitation sensor is fixedly installed on the top of the base plate, a water tank is placed on the top of the weighing precipitation sensor, and a protective ring is fixedly installed on the top of the base plate and fitted around the outside of the water tank.
3. The anti-overflow and anti-immersion protection device for the weighing precipitation sensor according to claim 2, characterized in that, The mounting bracket is fixedly installed on the protective ring.
4. The anti-overflow and anti-immersion protection device for the weighing precipitation sensor according to claim 1, characterized in that, The switch is electrically connected to the water level detection alarm via a wire, with one end of the wire near the switch located inside the connecting rod.