Rain gauge on-site checking device

Abstract

The utility model provides a pluviometer on-site checking device, which comprises a water tank, a spray header and a pluviometer, the upper part of the pluviometer is provided with a rainfall simulation mechanism, the rainfall simulation mechanism is arranged on an adjusting assembly, and the adjusting assembly comprises a horizontal moving mechanism and an angle adjusting mechanism. The device is used for changing the falling track of raindrops, so that the raindrops fall to the rain gauge at an inclined angle, the device can replace the situation that rainwater obliquely falls to the optical rain gauge due to wind and rain in the natural environment, and the accuracy of detection of the rain gauge is checked, so that the detection effect and the precision of the rain gauge are improved. The spraying angle of the spraying head is adjusted through the angle adjusting mechanism, the spraying head with the inclined angle is aligned with the rain gauge through the horizontal moving mechanism to conduct rain simulation, the accuracy of rainfall simulation is guaranteed, measurement of various meteorological conditions is achieved, and therefore the accuracy and reliability of the rain gauge are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rainfall measurement, in particular to a rain gauge on-site verification device. Background Art

[0002] Rainfall measurement is one of the important monitoring elements of hydrology, meteorology and flood prevention and warning departments. It is used to monitor rainfall (precipitation). There are many kinds of rain gauges in the existing technology, such as tipping bucket rain gauges, piezoelectric rain gauges and optical rain gauges. Before the rain gauge is put into use, it needs to be tested and verified to ensure the accuracy and reliability of the measurement during use.

[0003] The prior art discloses a piezoelectric rain gauge test device (publication number: CN213122339U), which includes a supporting bracket, a water pump, a main pipe, a check valve, a regulating valve, a flow meter, a distribution plate and a drip assembly. The supporting bracket is a right-angle L-shaped structure. The water pump is arranged at the horizontal part of the bottom of the supporting bracket. The distribution plate is arranged above the water pump and is arranged horizontally. One end of the main pipe is arranged at the output end of the water pump, and the other end of the main pipe is arranged on the distribution plate. The main pipe is fixed by the supporting bracket. The check valve, the regulating valve and the flow meter are all arranged on the main pipe and are arranged away from the water pump in sequence. The drip assembly is arranged on the distribution plate and is arranged vertically downward.

[0004] However, the above technical scheme and the prior art still have the following defects: the weather in nature is changeable, and in windy and rainy weather, rain falls obliquely towards the rain gauge, which may affect the measurement accuracy, especially for the optical rain gauge, which is a device that uses optical principles to measure rainfall. It judges the rainfall by monitoring the blockage of raindrops passing through the light beam. Wind and rain cause rain to fall obliquely towards the optical rain gauge, which may have a certain impact on its measurement results. However, the device falls vertically downward onto the piezoelectric rain gauge through a pressure-compensated dripper, and the piezoelectric rain gauge is used for detection, which makes the detection experiment method relatively single. The weather in nature is changeable. In the presence of wind, the movement trajectory of raindrops will change, which may lead to inaccurate measurement and affect the accuracy and reliability of the measurement. Utility Model Content

[0005] The utility model aims to provide a rain gauge on-site verification device to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rain gauge on-site verification device comprises a water tank, a sprinkler head and a rain gauge, wherein a support seat is arranged at the center of the upper part of the water tank, a rain gauge is detachably arranged on the support seat, and a rainfall simulation mechanism is arranged at the upper part of the rain gauge, and the rainfall simulation mechanism is used to simulate the influence of different rainfall on the rain gauge detection;

[0008] The rainfall simulation mechanism is arranged on the adjustment component, and the adjustment component is used to change the trajectory of raindrops falling so that raindrops fall toward the rain gauge at an inclined angle. The adjustment component includes a horizontal moving mechanism and an angle adjustment mechanism, and the angle adjustment mechanism is arranged on the horizontal moving mechanism.

[0009] Preferably, the rainfall simulation mechanism includes a sprinkler head, a first water inlet pipe, a metering pump, a first water outlet pipe, a flow control valve, a second water inlet pipe, a metering cylinder and a second water outlet pipe. The sprinkler head is fixedly installed on one end of the first water inlet pipe. A rainfall control valve is provided on the first water inlet pipe located at the upper part of the sprinkler head. The other end of the first water inlet pipe is connected and fixed to the first water outlet pipe on the metering pump through a hose. The second water inlet pipe on the metering pump is connected and fixed to the second water outlet pipe on one side of the bottom end of the metering cylinder through a hose. The sprinkler head is located above the rain gauge.

[0010] Preferably, the other side of the bottom end of the metering cylinder is connected to the water outlet end of the servo pump through a third water inlet pipe, the water inlet end of the servo pump is connected and fixed to the bottom end of the water tank through a return pipe, a water outlet valve is provided on the return pipe, and a one-way valve is provided on the third water inlet pipe.

[0011] Preferably, the horizontal moving mechanism includes a first servo motor, a screw rod, a sliding rod and a movable slide, the first servo motor is arranged on one side of the top end of the bracket, the bracket is fixedly installed in the center of both sides of the water tank, and the output end of the first servo motor is connected and fixed to the screw rod through a coupling, the screw rod is rotatably arranged inside the bracket, and the screw rod is threadedly connected to the center of the inside of the movable slide, and the inside of both sides of the movable slide is slidably connected to the sliding rods arranged on both sides of the screw rod.

[0012] Preferably, the angle adjustment mechanism includes a U-shaped plate, a first rotating shaft, a worm gear, a second servo motor and a worm. The U-shaped plate is fixedly mounted on the bottom surface of the movable slide, and the inner sides of the upper side of the U-shaped plate are rotatably connected to the two ends of the first rotating shaft. A worm gear is fixedly mounted at the center of the first rotating shaft, and the worm gear is transmission-connected to the worm gear. The worm gear is fixedly mounted on the output end of the second servo motor, and the second servo motor is fixedly mounted on the inner side of the U-shaped plate.

[0013] Preferably, the angle adjustment mechanism also includes a connecting plate, a second rotating shaft, a limiting groove, a fixing plate and a mounting plate, one end of the connecting plate is symmetrically arranged at both ends of the first rotating shaft, and the other end of the connecting plate is fixedly connected to the second rotating shaft, the two ends of the second rotating shaft are slidably connected to the limiting grooves opened inside the two sides of the U-shaped plate, and the two end portions of the second rotating shaft are fixedly connected to one end of the fixing plate, the other end of the fixing plate is fixedly installed with a fixing plate, and the fixing plate is connected and fixed to a fixing plate arranged above the spray head by screws to achieve the installation and fixation of the spray head.

[0014] Preferably, a solar lamp is provided at the top of the bracket, and the solar lamp replaces the sun to irradiate the rain gauge.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By setting an adjustment component, the angle of the sprinkler head can be adjusted to change the trajectory of the falling raindrops and make the raindrops fall to the rain gauge at an inclined angle. This can replace the rain in the natural environment that causes the rain to fall obliquely to the optical rain gauge, and verify the accuracy of the rain gauge detection, thereby improving the detection effect and the accuracy of the rain gauge, ensuring the accuracy and reliability of the rain gauge measurement, and adjusting the spraying angle of the sprinkler head through the angle adjustment mechanism. The angle adjustment mechanism is driven to move left and right through the horizontal moving mechanism, so that the sprinkler head with an inclined angle can be aligned with the rain gauge to simulate rain, ensure the accuracy of the rainfall simulation, and realize the measurement of various meteorological conditions, thereby ensuring the accuracy and reliability of the rain gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the angle adjustment mechanism structure of the utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the shower head of the utility model.

[0020] Figure 4 It is a schematic diagram of the angle adjustment structure of the sprinkler head of the utility model.

[0021] In the figure: 1. water tank; 2. bracket; 3. horizontal moving mechanism; 301. first servo motor; 302. screw rod; 303. slide rod; 304. movable slide seat; 4. angle adjustment mechanism; 401. U-shaped plate; 402. first rotating shaft; 403. worm gear; 404. second servo motor; 405. worm; 406. connecting plate; 407. second rotating shaft; 408. limiting groove; 409. fixing plate; 410. mounting plate; 5. sprinkler head; 6. first water inlet pipe; 7. metering pump; 8. first water outlet pipe; 9. rainfall control valve; 10. second water inlet pipe; 11. metering cylinder; 12. second water outlet pipe; 13. support seat; 14. rain gauge; 15. return pipe; 16. outlet valve; 17. servo pump; 18. third water inlet pipe; 19. fixing plate; 20. sun lamp. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] Embodiment 1:

[0025] A rain gauge on-site verification device comprises a water tank 1, a sprinkler head 5 and a rain gauge 14. A support seat 13 is arranged at the center of the upper part of the water tank 1. The rain gauge 14 is detachably arranged on the support seat 13. A rainfall simulation mechanism is arranged on the upper part of the rain gauge 14. The rainfall simulation mechanism is used to simulate the influence of different rainfall on the detection of the rain gauge 14.

[0026] The rainfall simulation mechanism is arranged on the adjustment component, which is used to change the trajectory of raindrops falling so that raindrops fall toward the rain gauge 14 at an inclined angle. The adjustment component includes a horizontal moving mechanism 3 and an angle adjustment mechanism 4, and the angle adjustment mechanism 4 is arranged on the horizontal moving mechanism 3.

[0027] The rainfall simulation mechanism includes a sprinkler head 5, a first water inlet pipe 6, a metering pump 7, a first water outlet pipe 8, a flow control valve, a second water inlet pipe 10, a metering cylinder 11 and a second water outlet pipe 12. The sprinkler head 5 is fixedly installed at one end of the first water inlet pipe 6. A rainfall control valve 9 is provided on the first water inlet pipe 6 located at the upper part of the sprinkler head 5. The other end of the first water inlet pipe 6 is connected and fixed to the first water outlet pipe 8 on the metering pump 7 through a hose. The second water inlet pipe 10 on the metering pump 7 is connected and fixed to the second water outlet pipe 12 on one side of the bottom end of the metering cylinder 11 through a hose. The sprinkler head 5 is located above the rain gauge 14.

[0028] The other side of the bottom end of the metering cylinder 11 is connected to the water outlet end of the servo pump 17 through the third water inlet pipe 18, and the water inlet end of the servo pump 17 is connected and fixed to the bottom end of the water tank 1 through the return pipe 15. The return pipe 15 is provided with a water outlet valve 16, and the third water inlet pipe 18 is provided with a one-way valve.

[0029] In this embodiment, a rainfall simulation mechanism is provided above the rain gauge 14 to achieve the detection effect of the rain gauge 14 by simulating different external rainfalls, and the water inside the metering cylinder 11 is pumped into the sprinkler head 5 by the driving of the metering pump 7, and falls onto the rain gauge 14 at the bottom through the sprinkler head 5. The rainfall control valve 9 is used to adjust the rainfall amount, and finally the detection result of the rain gauge 14 is compared with the experimental result to judge the detection accuracy of the rain gauge 14.

[0030] Embodiment 2:

[0031] Based on the first embodiment, the adjustment component mentioned in the first embodiment is described as follows:

[0032] The horizontal moving mechanism 3 includes a first servo motor 301, a screw rod 302, a slide rod 303 and a movable slide seat 304. The first servo motor 301 is arranged on one side of the top end of the bracket 2. The bracket 2 is fixedly installed in the center of both sides of the water tank 1, and the output end of the first servo motor 301 is connected and fixed to the screw rod 302 through a coupling. The screw rod 302 is rotatably arranged inside the bracket 2, and the screw rod 302 is threadedly connected to the center of the inside of the movable slide seat 304. The inside of both sides of the movable slide seat 304 is slidably connected with the slide rods 303 arranged on both sides of the screw rod 302.

[0033] The angle adjustment mechanism 4 includes a U-shaped plate 401, a first rotating shaft 402, a worm gear 403, a second servo motor 404 and a worm 405. The U-shaped plate 401 is fixedly installed on the bottom surface of the movable slide 304, and the inner sides of the upper part of the U-shaped plate 401 are rotatably connected to the two ends of the first rotating shaft 402. A worm gear 403 is fixedly installed at the center of the first rotating shaft 402. The worm gear 403 and the worm 405 are transmission-connected. The worm 405 is fixedly installed on the output end of the second servo motor 404, and the second servo motor 404 is fixedly installed on the inner side of the U-shaped plate 401.

[0034] The angle adjustment mechanism 4 also includes a connecting plate 406, a second rotating shaft 407, a limiting groove 408, a fixing plate 409 and a mounting plate 410. One end of the connecting plate 406 is symmetrically arranged at both ends of the first rotating shaft 402, and the other end of the connecting plate 406 is fixedly connected to the second rotating shaft 407. The two ends of the second rotating shaft 407 are slidably connected to the limiting grooves 408 opened on both sides of the U-shaped plate 401, and the two end portions of the second rotating shaft 407 are fixedly connected to one end of the fixing plate 409. The other end of the fixing plate 409 is fixedly installed with a fixing plate 410. The fixing plate 410 is connected and fixed to the fixing plate 19 arranged above the sprinkler head 5 by screws to realize the installation and fixation of the sprinkler head 5.

[0035] A solar lamp 20 is arranged at the top of the bracket 2, and the solar lamp 20 replaces the sun to irradiate the rain gauge 14. The arrangement of the solar lamp 20 can replace the irradiation of sunlight to realize on-site verification of the optical rain gauge.

[0036] In this embodiment, by setting an adjustment component, the angle of the sprinkler head 5 is adjusted to change the trajectory of raindrops falling, so that raindrops fall to the rain gauge 14 at an inclined angle, and the accuracy of the detection of the rain gauge 14 is checked, thereby improving the detection effect and the accuracy of the rain gauge 14. The spraying angle of the sprinkler head 5 is adjusted by the angle adjustment mechanism 4, and the worm 405 is driven by the second servo motor 404 to rotate, thereby driving the first rotating shaft 402 to rotate through the worm gear 403, and the second rotating shaft 407 is driven to rotate in the limit groove 408 through the rotation of the first rotating shaft 402, so as to adjust the spray angle of the sprinkler head 5 fixed on the mounting plate 410, and the angle adjustment mechanism 4 is driven by the horizontal moving mechanism 3 to move left and right, so that the sprinkler head 5 with an inclined angle is aligned with the rain gauge 14 for rain simulation, thereby ensuring the accuracy of the rainfall simulation.

[0037] Working principle: This device can be used to check and detect different rain gauges, simulate the rainfall size through the rainfall simulation mechanism, realize the vertical falling of rainwater, detect rainfall of different sizes through the rain gauge 14, ensure the accurate measurement of the rain gauge 14 under different rainfall sizes, adjust the falling angle of raindrops through the adjustment component, and fall to the rain gauge 14 in an inclined falling manner, instead of the inclined falling of rainwater in windy and rainy weather, to ensure the accurate measurement of the rain gauge 14 under various meteorological conditions, thereby improving the accuracy and reliability of the measurement data of the rain gauge 14, and compare the amount of water extracted from the metering cylinder 11 with the amount measured by the rain gauge 14 experimentally, and finally, the water stored in the water tank 1 and sprayed by the sprinkler head 5 can be pumped back into the metering cylinder 11 by the action of the water outlet valve 16 and the servo pump 17, so as to recycle the water;

[0038] When the optical rain gauge is tested, since the optical rain gauge is a device that uses optical principles to measure rainfall, the rainfall is judged by monitoring the blockage of raindrops passing through the light beam, and the spray angle of the sprinkler head 5 is adjusted by adjusting the components to replace the wind and rain in the natural environment that causes rain to tilt and fall toward the optical rain gauge, and the measurement results of the optical rain gauge are observed to ensure the accuracy and reliability of the optical rain gauge under different meteorological conditions.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rain gauge on-site verification device, comprising a water tank (1), a sprinkler head (5) and a rain gauge (14), characterized in that: A support seat (13) is arranged at the center of the upper part of the water tank (1), a rain gauge (14) is detachably arranged on the support seat (13), and a rainfall simulation mechanism is arranged on the upper part of the rain gauge (14), and the rainfall simulation mechanism is used to simulate the influence of different rainfall amounts on the detection of the rain gauge (14); The rainfall simulation mechanism is arranged on an adjustment component, the adjustment component is used to change the trajectory of raindrops falling, so that raindrops fall toward the rain gauge (14) at an inclined angle, the adjustment component comprises a horizontal movement mechanism (3) and an angle adjustment mechanism (4), and the angle adjustment mechanism (4) is arranged on the horizontal movement mechanism (3).

2. A rain gauge on-site verification device according to claim 1, characterized in that: The rainfall simulation mechanism comprises a sprinkler head (5), a first water inlet pipe (6), a metering pump (7), a first water outlet pipe (8), a flow control valve, a second water inlet pipe (10), a metering cylinder (11) and a second water outlet pipe (12); the sprinkler head (5) is fixedly mounted on one end of the first water inlet pipe (6); a rainfall control valve (9) is arranged on the first water inlet pipe (6) located above the sprinkler head (5); the other end of the first water inlet pipe (6) is connected and fixed to the first water outlet pipe (8) on the metering pump (7) through a hose; the second water inlet pipe (10) on the metering pump (7) is connected and fixed to the second water outlet pipe (12) on one side of the bottom end of the metering cylinder (11) through a hose; and the sprinkler head (5) is located above a rain gauge (14).

3. A rain gauge on-site verification device according to claim 2, characterized in that: The other side of the bottom end of the metering cylinder (11) is connected to the water outlet end of the servo pump (17) via a third water inlet pipe (18); the water inlet end of the servo pump (17) is connected and fixed to the bottom end of the water tank (1) via a return pipe (15); a water outlet valve (16) is provided on the return pipe (15); and a one-way valve is provided on the third water inlet pipe (18).

4. A rain gauge on-site verification device according to claim 1, characterized in that: The horizontal moving mechanism (3) comprises a first servo motor (301), a screw rod (302), a sliding rod (303) and a movable slide seat (304); the first servo motor (301) is arranged on one side of the top end of the bracket (2); the bracket (2) is fixedly installed at the center of both sides of the water tank (1); the output end of the first servo motor (301) is connected and fixed to the screw rod (302) through a coupling; the screw rod (302) is rotatably arranged inside the bracket (2); the screw rod (302) is threadedly connected to the center of the inside of the movable slide seat (304); and the inside of both sides of the movable slide seat (304) is slidably connected to the sliding rods (303) arranged on both sides of the screw rod (302).

5. A rain gauge on-site verification device according to claim 1, characterized in that: The angle adjustment mechanism (4) comprises a U-shaped plate (401), a first rotating shaft (402), a worm gear (403), a second servo motor (404) and a worm (405); the U-shaped plate (401) is fixedly mounted on the bottom surface of the movable slide (304); the inner sides of the upper part of the U-shaped plate (401) are rotatably connected to the two ends of the first rotating shaft (402); a worm gear (403) is fixedly mounted at the center of the first rotating shaft (402); the worm gear (403) and the worm (405) are transmission-connected; the worm (405) is fixedly mounted on the output end of the second servo motor (404); and the second servo motor (404) is fixedly mounted on the inner side of the U-shaped plate (401).

6. A rain gauge on-site verification device according to claim 5, characterized in that: The angle adjustment mechanism (4) further comprises a connecting plate (406), a second rotating shaft (407), a limiting groove (408), a fixing plate (409) and a mounting plate (410); one end of the connecting plate (406) is symmetrically arranged at two ends of the first rotating shaft (402), and the other end of the connecting plate (406) is fixedly connected to the second rotating shaft (407); the two ends of the second rotating shaft (407) are slidably connected to the limiting grooves (408) provided inside the two sides of the U-shaped plate (401), and the two end portions of the second rotating shaft (407) are fixedly connected to one end of the fixing plate (409); the other end of the fixing plate (409) is fixedly installed with a fixing plate (410); the fixing plate (410) is connected and fixed to a fixing plate (19) provided above the spray head (5) by screws, so as to realize the installation and fixation of the spray head (5).

7. A rain gauge on-site verification device according to claim 4, characterized in that: A sun lamp (20) is arranged at the top end of the bracket (2), and the sun lamp (20) replaces the sun to irradiate the rain gauge (14).

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