Weighing type rain and snow meter
By adding an oil layer and an automatic drainage system to the inner cylinder of the weighing rain and snow gauge, the problem of measurement error caused by liquid evaporation is solved, and high-precision rain and snow measurement is achieved, which is suitable for severe cold in the north and high temperature and humidity and freezing disaster weather in the south.
Patent Information
- Application Number
- CN202520385958.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Weighing-type rain and snow gauges have large measurement errors due to liquid evaporation when measuring light rainfall or snowfall, making it difficult to achieve high-precision measurements, especially in frigid northern regions and in hot, humid, and freezing weather conditions in the south.
An oil layer with a density less than water and insoluble in water is added to the inner cylinder of the meter to form a tight protective film to block the liquid from contacting the air. Combined with an automatic drainage system and a liquid level sensor, liquid evaporation is reduced and measurement accuracy is ensured.
It effectively suppresses liquid evaporation, improves measurement accuracy, reduces the frequency of manual maintenance, lowers labor costs, and ensures the accuracy of measurement data.
Smart Images
Figure CN223883787U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydrology meteorological measuring equipment technical field, specifically provide a kind of weighing rain and snow gauge. BACKGROUND
[0002] Water resources management is an important work of hydrological department, and accurate rain and snow measurement is the basis of water resources management work. For the winter in the northern severe cold area and the high temperature and high humidity and freezing disaster weather in the south, it is very difficult to automatically measure precipitation, and the precision of precipitation measurement directly affects the accuracy of rain and snow measurement, so it is necessary to design a high-precision rain and snow measuring instrument suitable for the winter in the northern severe cold area and the high temperature and high humidity and freezing disaster weather in the south.
[0003] The weighing rain and snow gauge has high monitoring precision, which makes up for the low measurement accuracy of traditional rain gauges for light rain and drizzle, and can monitor snowfall, which greatly improves the winter precipitation measurement problem in the northern area with little precipitation and severe cold area.
[0004] However, the weighing rain and snow gauge is not real-time monitoring, but is measured at regular intervals, and the amount of precipitation or snowfall is determined by analyzing the weight change of the collected rain or snow at several time points. However, most open weighing rain and snow gauges have a large measurement error for small rainfall or snowfall due to the evaporation of liquid. How to overcome the evaporation of liquid to improve the measurement accuracy is a difficult problem faced by traditional weighing rain and snow gauges. UTILITY MODEL CONTENTS
[0005] In order to solve the above problems, the utility model provides a kind of weighing rain and snow gauge, which adds oil layer in the inner cylinder of the gauge to block the contact between air and liquid and reduce the evaporation of liquid in the inner cylinder.
[0006] The technical scheme of the utility model is as follows:
[0007] A kind of weighing rain and snow gauge, comprising a shell, the shell is provided with an inner cylinder mounted on the weighing part, the shell is arranged on the base, the upper end of the shell is provided with an opening communicating with the inside of the inner cylinder, the inner cylinder is provided with an oil layer, and the bottom of the inner cylinder is provided with a drainage part.
[0008] In this scheme, an oil layer is arranged in the inner cylinder, and the oil layer preferably uses oil with a density less than water and insoluble in water. The oil layer has high chemical stability and low volatility, and can form a tight protective film on the surface of the liquid, blocking the contact channel between the liquid and the air, effectively inhibiting the evaporation of the rainwater and snowwater collected in the inner cylinder, overcoming the measurement error caused by the evaporation of liquid in the traditional rain and snow gauge, and ensuring that the measurement data accurately reflects the actual precipitation. By arranging the drainage part at the bottom, rainwater or snowwater with higher density can be discharged first, avoiding waste of oil and misdischarge.
[0009] Since the weighing rain and snow gauge can remove the rainwater and snowwater in the inner cylinder, so as to avoid the inner cylinder being filled and the weight change of the collected rainwater or snowwater being unable to be detected, in order to avoid the oil liquid being discharged with the rainwater or snowwater, and also to reduce the manual maintenance frequency of the rain and snow gauge, preferably, the water drainage part comprises a hose and a pull ring, one end of the hose is communicated with the bottom of the inner cylinder, the other end of the hose extends out of the shell from the base, an electric control valve is arranged on the hose, and the pull ring is fixedly connected with the hose, and the height of the pull ring is controlled to control the highest point of the hose in the vertical direction.
[0010] In this scheme, the liquid in the inner cylinder can be automatically discharged through the electric control valve, without manual operation, so as to reduce the labor cost; meanwhile, the highest point of the hose in the vertical direction is controlled through the pull ring, so that the highest point of the hose in the vertical direction is higher than the ground of the inner cylinder, the lowest liquid level in the inner cylinder is controlled by using the principle of communicating vessel, and the oil layer with a density smaller than water cannot be discharged due to the opening of the electric control valve. Meanwhile, as long as the hose between the connecting ring and the bottom of the inner cylinder is not straightened, the pulling force of the connecting ring cannot be transmitted to the inner cylinder, so that the measurement of the weighing part is not interfered.
[0011] Preferably, the water drainage part further comprises a sliding unit arranged on the inner wall of the shell, the sliding unit comprises a vertically arranged sliding rail, a sliding block is fixedly arranged on the sliding rail, and the sliding block is fixedly connected with the pull ring. The height of the pull ring is controlled by sliding the sliding block.
[0012] In order to control and position the height of the pull ring when the gauge is installed, and also to avoid the structure for adjusting the height of the pull ring causing gaps in the shell, rainwater can enter the inside of the shell to affect the normal work of the weighing part and other devices, preferably, a rotating rod is inserted on the shell, a rotating knob with a self-locking structure is fixedly connected with one end of the rotating rod outside the shell, a gear is arranged on one end of the rotating rod inside the shell, the sliding block is a long sliding block, a rack is arranged on the long face of the sliding block and matched with the gear, and the gear is engaged with the rack. When the gauge is installed, the sliding block on the sliding rail is controlled to slide by rotating the rotating knob, so as to control the height of the pull ring, the installation personnel can directly control from the outside, and the shell is prevented from having gaps to avoid the immersion of rainwater.
[0013] On one hand, in order to avoid the gauge working for a long time, the inner cylinder being filled with rainwater or snowwater, and the weight of the inner cylinder not changing to cause the measurement to be invalid; on the other hand, since the oil layer has a lower density than water, when the inner cylinder is filled, the oil layer flows away from the opening of the inner cylinder, so as to cause the oil layer to be invalid, in order to avoid these situations, preferably, a liquid level sensor is attached to the outer wall of the inner cylinder, and the liquid level sensor is arranged at the highest water level allowed by the inner cylinder.
[0014] In the scheme, the liquid level sensor is electrically connected with the electric control valve, when the liquid level sensor triggers, the electric control valve is opened, the inner cylinder automatically drains, and manual drainage is not needed, and the highest point is higher than the inner cylinder bottom surface, and the oil layer is not drained.
[0015] Preferably, the opening of the shell extends towards the opening center with a necking, the necking is inclined towards the inner cylinder bottom, and the minimum diameter of the necking is smaller than the diameter of the opening of the inner cylinder. The necking can prevent rain and snow from falling between the shell and the inner cylinder.
[0016] Preferably, a vertical ring column is arranged at the bottom of the necking, and the outer wall of the ring column is in gap fit with the inner wall of the opening of the inner cylinder. Because of the gap between the inner cylinder and the shell, the ring column can prevent the inner cylinder from shaking when placed on the weighing part.
[0017] Preferably, a heating unit is arranged below the necking of the shell. The situation that the oil layer is frozen due to snow accumulation can be effectively avoided when the temperature is too low.
[0018] Preferably, a hydrophobic coating is sprayed on the inner wall of the inner cylinder to reduce the wall-hanging phenomenon of water and oil.
[0019] The beneficial effects of the utility model are as follows:
[0020] The utility model discloses an oil layer is arranged in the inner cylinder for collecting rain and snow, the oil layer preferably uses oil liquid with density less than water and insoluble in water, the oil layer has high chemical stability and low volatility, and can form a tight protective film on the liquid surface, block the contact channel of liquid and air, effectively inhibit the volatilization of rainwater and snow water collected by the inner cylinder, and solve the problem of measurement error caused by liquid volatilization in the traditional rain and snow gauge, so that the measurement data accurately reflect the actual precipitation condition. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0022] Figure 1 It is a half sectional schematic view of the utility model;
[0023] Figure 2 It is the utility model Figure 1 It is an enlarged view of A in the utility model;
[0024] Figure 3 It is the utility model Figure 1 It is an enlarged view of B in the utility model.
[0025] In the above figures, the corresponding reference numerals are as follows:
[0026] 1-Outer shell, 11-Nap, 12-Ring column, 2-Weighing part, 3-Inner cylinder, 4-Drainage part, 41-Hose, 42-Lifting ring, 43-Electrically controlled valve, 44-Slide rail, 45-Sliding block, 451-Rack, 46-Rotating rod, 47-Rotating knob, 48-Gear, 5-Level sensor, 6-Oil layer, 7-Heating unit, 8-Base. Detailed Implementation
[0027] The technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings and through specific implementation methods of the embodiments of the present invention.
[0028] Example 1:
[0029] A type of weighing rain and snow gauge, such as Figure 1 As shown, it includes an outer shell 1, an inner cylinder 3 installed on a weighing part 2 inside the outer shell 1, the outer shell 1 is mounted on a base 8, the upper end of the outer shell 1 is provided with an opening communicating with the inside of the inner cylinder 3, the inner cylinder 3 is provided with an oil layer 6, and the bottom of the inner cylinder 3 is provided with a drainage part 4.
[0030] Specifically, the weighing unit 2 is an existing weight measuring instrument that can record the weight of the inner cylinder 3 at regular intervals via the control unit. An oil layer 6 is provided in the inner cylinder 3. The oil layer 6 preferably uses an oil with a density less than water and insoluble in water. In this embodiment, silicone oil is used. The thickness of the oil layer 6 is 1cm to 2cm. The silicone oil layer 6 has high chemical stability and low volatility, and can form a tight protective film on the liquid surface, blocking the contact channel between the liquid and the air, effectively inhibiting the evaporation of rainwater and snow water collected in the inner cylinder 3.
[0031] Because existing weighing rain and snow gauges require periodically draining the water from the inner cylinder 3 to prevent it from being full and thus failing to detect changes in the weight of collected rainwater or snow, and because the oil layer 6 cannot be drained along with the water, in order to ensure the oil can be used for a longer period of time, such as... Figure 3As shown, by setting the drainage part 4 at the bottom of the inner cylinder 3, rainwater or snow water with greater density can be preferentially discharged, avoiding waste and misdischarge of oil. Moreover, the drainage part 4 comprises a hose 41 and a pull ring 42, one end of the hose 41 is communicated with the bottom of the inner cylinder 3, the other end of the hose 41 extends out of the shell 1 from the base 8, an electric control valve 43 is arranged on the hose 41, the pull ring 42 is fixedly connected with the hose 41, the height of the pull ring 42 is controlled to control the highest point of the hose 41 in the vertical direction, the electric control valve 43 can automatically control the inner cylinder 3 to discharge liquid, without manual operation, reducing labor cost; at the same time, the highest point of the hose 41 in the vertical direction is controlled by the pull ring 42, so that the highest point of the hose 41 in the vertical direction is higher than the ground of the inner cylinder 3, the lowest liquid level in the inner cylinder 3 can be controlled by the principle of communicating vessel, so that the oil layer 6 with smaller density than water cannot be discharged due to the opening of the electric control valve 43. At the same time, as long as the hose 41 between the connecting ring and the bottom of the inner cylinder 3 is not straightened, the pulling force of the connecting ring cannot be transmitted to the inner cylinder 3, so that the measurement of the weighing part 2 is not interfered.
[0032] Further, the drainage part 4 further comprises a sliding unit arranged on the inner wall of the shell 1, the sliding unit comprises a vertically arranged sliding rail 44, a sliding block 45 is fixedly arranged on the sliding rail 44, and the sliding block 45 is fixedly connected with the pull ring 42. The height of the pull ring 42 is controlled by sliding the sliding block 45. A rotating rod 46 is inserted on the shell 1, one end of the rotating rod 46 outside the shell 1 is fixedly connected with a rotating knob 47 with a self-locking structure, one end of the rotating rod 46 inside the shell 1 is provided with a gear 48, the sliding block 45 is a long sliding block 45, the long surface of the sliding block 45 is provided with a gear rack 451 matched with the gear 48, and the gear 48 is engaged with the gear rack 451. When installing the meter, the height of the pull ring 42 can be controlled by rotating the rotating knob 47 to control the sliding block 45 to slide on the sliding rail 44, which is convenient for the installer to directly control from the outside. The rotating rod 46 is connected with the shell 1 by insertion, avoiding the generation of gaps in the shell 1, preventing the immersion of rainwater and affecting the normal work of the weighing part 2 and other devices. The self-locking structure of the rotating knob 47 can be a structure that the friction force of the bolt abuts against the rotating rod 46.
[0033] Further, in order to avoid the meter working for a long time, rainwater or snow water filling the inner cylinder 3, causing the weight of the inner cylinder 3 not to change, resulting in measurement failure; at the same time, due to the low density of the oil layer 6, when the inner cylinder 3 is filled, the oil layer 6 will flow away from the opening of the inner cylinder 3, causing the oil layer 6 to fail, in order to avoid these situations, preferably, a liquid level sensor 5 is attached to the outer wall of the inner cylinder 3, and the liquid level sensor 5 is arranged at the highest water level allowed by the inner cylinder 3.
[0034] Specifically, the liquid level sensor 5 adopts a non-contact water level detection module, which is glued to the outer wall of the inner cylinder 3. At this time, the inner cylinder cannot be made of metal. The change of high and low voltage level is used to determine whether the water level has reached the limit value. It is electrically connected to the electric control valve 43. When the liquid level sensor 5 is triggered, the electric control valve 43 will open, allowing the inner cylinder 3 to automatically drain water without manual drainage. At the same time, the hose 41, whose highest point is higher than the bottom surface of the inner cylinder 3, ensures that the oil layer 6 will not be drained away.
[0035] Example 2:
[0036] Based on Example 1, such as Figure 2 As shown, the opening of the outer shell 1 extends towards the center of the opening with a constriction 21. The constriction 21 slopes towards the bottom of the inner cylinder 3, and the minimum diameter of the constriction 21 is smaller than the diameter of the opening of the inner cylinder 3. The constriction 21 ensures that rain and snow will not fall between the outer shell 1 and the inner cylinder 3.
[0037] Furthermore, a vertical annular post 22 is provided at the bottom of the constriction 21, and the outer wall of the annular post 22 is in clearance fit with the inner wall of the opening of the inner cylinder 3. Since there is a gap between the inner cylinder 3 and the outer shell 1, the presence of the annular post 22 can prevent the inner cylinder 3 from shaking when placed on the weighing part 2.
[0038] Furthermore, a heating unit 7 is provided below the constriction 21 of the outer shell 1. The constriction 21 is preferably made of aluminum alloy, which is lightweight and has good thermal conductivity and rust resistance. The heating unit 7 uses existing electric heating pads and is only used when measuring snowfall, which can effectively prevent freezing due to snow accumulation in low temperatures.
[0039] It should be noted that the inner wall of the inner cylinder 3 is coated with a hydrophobic coating to reduce water and oil adhesion. The inner wall of the ring column 22 is also coated with a hydrophobic coating. In this embodiment, the hydrophobic coating is a nano-silica composite coating with a contact angle ≥150°, which significantly reduces water droplet adhesion.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A weighing-type snow gauge, characterized by comprising: The application relates to a weighing device, which comprises a shell (1) provided with an inner cylinder (3) mounted on a weighing part (2), the shell (1) is arranged on a base (8), the upper end of the shell (1) is provided with an opening in communication with the inner cylinder (3), the inner cylinder (3) is provided with an oil layer (6), and the bottom of the inner cylinder (3) is provided with a drainage part (4).
2. A weighing rain-snow gauge according to claim 1, characterized in that The drainage part (4) comprises a hose (41) and a pull ring (42), one end of the hose (41) is in communication with the bottom of the inner cylinder (3), the other end of the hose (41) extends out of the shell (1) from the base (8), an electric control valve (43) is arranged on the hose (41), and the pull ring (42) is fixedly connected with the hose (41), and the height of the pull ring (42) is controlled to control the highest point of the hose (41) in the vertical direction.
3. A weighing rain and snow gauge according to claim 2, characterized in that The drainage part (4) further comprises a sliding unit arranged on the inner wall of the shell (1), the sliding unit comprises a sliding rail (44) arranged vertically, a sliding block (45) is fixedly arranged on the sliding rail (44), and the sliding block (45) is fixedly connected with the pull ring (42).
4. A weighing rain or snow gauge according to claim 3, characterized in that A rotating rod (46) is inserted in the shell (1), one end of the rotating rod (46) outside the shell (1) is fixedly connected with a rotating knob (47) with a self-locking structure, one end of the rotating rod (46) in the shell (1) is provided with a gear (48), the sliding block (45) is a long sliding block (45), the long surface of the sliding block (45) is provided with a rack (451) matched with the gear (48), and the gear (48) is engaged with the rack (451).
5. The weighing rain-snow gauge according to claim 1, characterized in that, A liquid level sensor (5) is attached to the outer wall of the inner cylinder (3), and the liquid level sensor (5) is arranged at the highest water level allowed by the inner cylinder (3).
6. The weighing rain-snow gauge according to claim 1, characterized in that, The opening of the shell (1) extends towards the center of the opening and is provided with a converging part (21), the converging part (21) is inclined towards the bottom of the inner cylinder (3), and the minimum diameter of the converging part (21) is smaller than the diameter of the opening of the inner cylinder (3).
7. A weighing rain or snow gauge according to claim 6, characterised in that A vertical ring column (22) is arranged downwards at the bottom of the converging part (21), and the outer wall of the ring column (22) is in gap cooperation with the inner wall of the opening of the inner cylinder (3).
8. A weighing rain or snow gauge according to claim 6, characterized in that A heating unit (7) is arranged below the converging part (21) of the shell (1).
9. The weighing rain-snow gauge according to claim 1, characterized in that, The inner wall of the inner cylinder (3) is sprayed with a hydrophobic coating.