CN219368859U - Negative pressure difference type automatic water surface evaporation measuring device - Google Patents
Negative pressure difference type automatic water surface evaporation measuring device Download PDFInfo
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- CN219368859U CN219368859U CN202320509391.4U CN202320509391U CN219368859U CN 219368859 U CN219368859 U CN 219368859U CN 202320509391 U CN202320509391 U CN 202320509391U CN 219368859 U CN219368859 U CN 219368859U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a negative pressure difference type automatic water surface evaporation measuring device, which comprises a transparent sealed tubular container provided with a millimeter scale, an evaporation vessel, a communicating water pipe provided with a water valve switch, an air pressure measuring chamber and a disc base, wherein the transparent sealed tubular container is provided with a millimeter scale; the top of the transparent sealed tubular container is provided with a water filling port, a water filling port sealing cover for sealing the water filling port, an air exhaust port and an air exhaust port sealing cover for sealing the air exhaust port; the front port of the air pressure measuring chamber is communicated with the transparent sealed tubular container, and the tail port of the air pressure measuring chamber is connected with a collector for remotely acquiring evaporation capacity data and carrying out networking observation; the transparent sealed tubular container is communicated with the evaporating dish through a communicating water pipe; the evaporating dish is provided with a communicating vessel; the height of the water draining air inlet is higher than that of the water supplementing air inlet, and the inner diameter of the transparent sealing tubular container is equal to that of the evaporating dish. The device utilizes the atmospheric pressure principle to closely combine manual observation and automatic observation of the evaporation capacity of the water surface, and solves the problems of high-frequency water supplementing and high labor intensity of measurement of manual observation.
Description
Technical Field
The utility model relates to the technical field of evaporation amount measuring tools, in particular to a negative pressure differential type automatic water surface evaporation measuring device.
Background
The water surface evaporation is to measure the evaporation capacity of water in the atmosphere at a certain time interval, a traditional manual observation device adopts a small evaporation pan (the evaporation area is 314 square centimeters and the inner diameter is 200 millimeters), a water layer with the depth of 20 centimeters is poured into the evaporation pan every day, the residual water is poured into a measuring cup at night, the residual water depth is measured, and the result obtained by subtracting the residual water depth from 20 centimeters is the evaporation capacity of the current day, namely the evaporation capacity measured in the evaporation pan with the caliber of 20 centimeters commonly used in weather stations in China. If there is rainfall on the same day, the residual water depth is also deducted the rainfall on the same day, namely evaporation amount=original amount+precipitation amount-allowance. In icing seasons, when the evaporating dish has ice, the measuring mode is needed to be adopted for measuring. Conventional automatic observation equipment such as E601 adopts a large-scale evaporation barrel, measures the water level height in the large-scale evaporation barrel every hour, stores the water level by using a data acquisition device, and if rainfall exists, the rainfall every hour needs to be subtracted when the data is processed.
The existing method for calculating the evaporation capacity of the water body in the evaporator according to the overflow capacity, but the overflow capacity measuring system involves equipment such as rainfall capacity, sensors and the like, has the defects of high cost, complex structure and high failure rate, and is easy to cause measurement errors due to the surface tension of the water in the overflow process when the overflow capacity is measured.
Both manual and automatic evaporation amount observation equipment is required to involve two problems of rainfall data and manual water replenishing in a vessel, and also involves the problems of accuracy and integrity of the accumulated rainfall data of the year, month and day, and the process of observing and processing the data is time-consuming and labor-consuming.
Therefore, a measuring device which can automatically and continuously observe, has low cost and can ensure data accuracy is needed.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a negative pressure difference type automatic water surface evaporation measuring device which utilizes the atmospheric pressure principle to closely combine manual observation and automatic observation of the evaporation capacity of the water surface and solves the problems of high frequency water supplement and high measuring labor intensity of manual observation.
The utility model is realized by the following technical scheme: the automatic measuring device comprises a transparent sealed tubular container, an evaporating dish, a communicating water pipe, an air pressure measuring chamber and a disc base; the top of the transparent sealed tubular container is provided with a water injection port and an exhaust port, the water injection port is provided with a water injection port sealing cover, and the exhaust port is provided with an exhaust port sealing cover; the front port of the air pressure measuring chamber is communicated with the transparent sealed tubular container, and the tail end port of the air pressure measuring chamber is connected with a collector for remotely acquiring evaporation capacity data and carrying out networking observation; the side surface of the bottom of the transparent sealed tubular container is provided with a first mounting hole, the side surface of the bottom of the evaporation vessel is provided with a second mounting hole, two ends of the communicating water pipe are respectively provided with a water draining air inlet and a water supplementing air inlet, the water draining air inlet is arranged in the first mounting hole and communicated with the transparent sealed tubular container, and the water supplementing air inlet is arranged in the second mounting hole and communicated with the evaporation vessel; the evaporating dish is provided with a communicating vessel, the communicating vessel comprises a communicating vessel fine tuning screw rod, the communicating vessel fine tuning screw rod is provided with a communicating pipeline penetrating the communicating vessel fine tuning screw rod, one end of the communicating vessel fine tuning screw rod extends into the evaporating dish and is communicated with the evaporating dish, and the other end of the communicating vessel fine tuning screw rod is a communicating vessel water outlet which is positioned outside the evaporating dish and is communicated with the outside; the two disc bases are respectively arranged at the lower side of the transparent sealed tubular container and the lower side of the evaporating dish; the height of the water draining air inlet is higher than that of the water supplementing air inlet, the height of the bottom of the transparent sealing tubular container is higher than that of the bottom of the evaporation dish, and the inner diameter of the transparent sealing tubular container is equal to that of the evaporation dish; the middle part of the communicating water pipe is provided with a water valve switch for controlling the on-off of the communicating water pipe; and a millimeter scale is arranged on the outer wall of the transparent sealed tubular container in the vertical direction, and the length of the millimeter scale is equal to the height of the transparent sealed tubular container.
The millimeter scale is arranged for manual observation; the collector is used for networking observation, remotely acquiring evaporation capacity data and clearly knowing the running state of the equipment; by utilizing the device, the manual observation part does not need any energy consumption and can automatically supplement water, the daily or monthly or yearly observation frequency can be set according to the actual requirement of manual observation, the water level change condition is recorded by checking the millimeter scale, the accumulated evaporation quantity can be conveniently and rapidly obtained, and even the accumulated evaporation quantity can be obtained once a year by checking the height of the millimeter scale; the method solves the problem that the total annual evaporation accumulation of the observation positioning site cannot be calculated due to incomplete annual data caused by faults such as power failure of instrument and equipment in the automatic observation process. The device can accurately acquire the change of the evaporation capacity data of different seasons and different weather every day every hour, can simultaneously observe the equipment in a networking way, remotely acquire the evaporation capacity data of the water surface, and know the running state of the equipment at any time. When the automatic equipment fails and falls off the network, the automatic record water level of the failure time can be checked, the missing data of the failure repair period can be checked, the change height of the sealing observation water column in the failure repair period can be checked, the data interpolation correction is carried out, and the data integrity and accuracy of the whole year are ensured.
The height of the water outlet of the communicating vessel is consistent with the height of the top of the inner diameter of the water supplementing air inlet.
The upper end of the evaporation pan is provided with an anti-bird sharp fence. The evaporation pan is provided with the bird-preventing sharp fence, so that birds can be prevented from entering the evaporation pan to take water, and accuracy is affected.
The bird-preventing sharp fence comprises a fixed ring, a plurality of straight bar fences and a plurality of bending fences, wherein the upper parts of the bending fences are bent outwards; the straight bar fences and the bent fence are distributed in a staggered mode, and the straight bar fences and the bent fence are fixed through the fixing rings.
The disc base is provided with a horizontal adjusting device for adjusting levelness of the disc base. The arrangement of the horizontal adjusting device can ensure that the device is in a horizontal state finally.
The horizontal adjusting device comprises a fixed threaded rod, an upper nut, a lower nut and a horizontal bubble; the disc base is provided with 6 screw fixing holes, every two screw fixing holes are in a group, each group of screw fixing holes are distributed at the edge of the disc base at equal intervals, the fixed threaded rod is arranged in the screw fixing holes in a penetrating mode, the upper end and the lower end of the fixed threaded rod are screwed into the upper nut and the lower nut respectively, and the edge of the disc base is clamped between the upper nut and the lower nut and is locked by the two nuts; the horizontal bubble is arranged on the outer edge of the upper side surface of the disc base.
The inner diameter of the transparent sealed tubular container is 200mm, and the height is 1500mm; the inner diameter of the water filling port is 12mm, and the inner diameter of the air outlet is 6mm; the diameters of the first mounting hole and the second mounting hole are 32mm, the outer diameter of the communicating water pipe is 32mm, and the length of the communicating water pipe is 1000mm.
The evaporation dish is characterized in that a semicircular arc waterproof surface wave sheet is arranged on the inner side of the evaporation dish, the semicircular arc waterproof surface wave sheet surrounds the periphery of the water supplementing air inlet, and the top end of the semicircular arc waterproof surface wave sheet is higher than the top of the inner diameter of the water supplementing air inlet.
The outer wall of the evaporation dish is coated with a heat insulation material layer; the collector is a Aquaread LeveLine-BARO automatic recorder portable detector or a CTD collector.
Compared with the prior art, the utility model has the advantages that: the device can accurately measure the evaporation capacity in the scientific research measurement aspect of water surface evaporation, the measurement process does not need artificial water supplement, automatic continuous observation of the device can be realized, artificial workload is reduced, and error influence of artificial observation is avoided. The evaporation capacity is accumulated throughout the year, the device is related to the water inlet and water replenishing liquid seal device through negative pressure difference type drainage, has no energy consumption and low cost, basically eliminates the influence of the surface tension of water, is not easy to block, is simple to maintain, does not involve rainfall data to participate in calculation, can ensure the accuracy and the integrity of the total evaporation capacity data throughout the year when automatic equipment has fault missing data, and provides important support for scientific researches such as ecology, hydrology and the like.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a perspective view of an embodiment of the present utility model;
FIG. 3 is a top view of an embodiment of the present utility model;
FIG. 4 is a bottom view of an embodiment of the present utility model;
fig. 5 is a schematic structural view of an evaporation pan according to an embodiment of the utility model.
The meaning of the reference numerals in the figures: 1. sealing cover of water injection port; 2. a water filling port; 3. an exhaust port sealing cover; 4. an exhaust port; 5. millimeter scale; 6. a transparent sealed tubular container; 7. a collector; 8. an air pressure measuring chamber; 9. a front port; 10. a disc base; 11. fixing a threaded rod; 121. a top nut; 122. a lower nut; 13. horizontal bubble; 14. a communicating water pipe; 141. a drainage air inlet; 142. a water supplementing air inlet; 15. a water valve switch; 16. bird-preventing sharp fences; 17. semi-circular arc waterproof surface wave sheet; 18. an evaporation dish; 19. a fixing ring; 20. a heat insulating material layer; 21. a communicating vessel drain port; 22. the communicating vessel fine-tunes the screw rod.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and detailed description.
Examples
Referring to fig. 1 to 5, an automatic measuring device for negative pressure differential water surface evaporation comprises a transparent sealed tubular container 6, an evaporation pan 18, a communicating water pipe 14, an air pressure measuring chamber 8 and a disc base 10; the top of the transparent sealed tubular container 6 is provided with a water filling port 2 and an exhaust port 4, the water filling port 2 is provided with a water filling port sealing cover 1, and the exhaust port 4 is provided with an exhaust port sealing cover 3; the front port 9 of the air pressure measuring chamber 8 is communicated with the transparent sealed tubular container 6, and the tail end port of the air pressure measuring chamber is connected with a collector 7 for remotely acquiring evaporation capacity data and carrying out networking observation; the side surface of the bottom of the transparent sealed tubular container 6 is provided with a first mounting hole, the side surface of the bottom of the evaporating dish 18 is provided with a second mounting hole, two ends of the communicating water pipe 14 are respectively provided with a water draining air inlet 141 and a water supplementing air inlet 142, the water draining air inlet 141 is arranged in the first mounting hole and communicated with the transparent sealed tubular container 6, and the water supplementing air inlet 142 is arranged in the second mounting hole and communicated with the evaporating dish 18; the evaporating dish 18 is provided with a communicating vessel, the communicating vessel comprises a communicating vessel micro-adjusting screw rod 22, the communicating vessel micro-adjusting screw rod 22 is provided with a communicating pipeline penetrating through the communicating vessel micro-adjusting screw rod, one end of the communicating vessel micro-adjusting screw rod 22 extends into the evaporating dish 18 and is communicated with the evaporating dish 18, and the other end of the communicating vessel micro-adjusting screw rod is provided with a communicating vessel water outlet 21 which is positioned outside the evaporating dish 18 and is communicated with the outside; the disc base 10 is provided with two discs which are respectively arranged at the lower side of the transparent sealed tubular container 6 and the lower side of the evaporating dish 18; the height of the water draining air inlet 141 is higher than that of the water supplementing air inlet 142, the height of the bottom of the transparent sealing tubular container 6 is higher than that of the bottom of the evaporating dish 18, and the inner diameter of the transparent sealing tubular container 6 is equal to that of the evaporating dish 18; a water valve switch 15 for controlling the on-off of the water pipe 14 is arranged in the middle of the water pipe; the millimeter scale 5 is installed in the vertical direction of the outer wall of the transparent sealed tubular container 6, and the length of the millimeter scale 5 is equal to the height of the transparent sealed tubular container 6.
The millimeter scale 5 is arranged for manual observation; the collector 7 is used for networking observation, remotely acquiring evaporation capacity data and clearly knowing the running state of the equipment; by utilizing the device, the manual observation part does not need any energy consumption and can automatically supplement water, the daily or monthly or yearly observation frequency can be set according to the actual requirement of manual observation, the water level change condition is recorded by checking the millimeter scale 5, the accumulated evaporation quantity is conveniently and rapidly obtained, and even the accumulated evaporation quantity can be obtained once a year by only checking the height of the millimeter scale 5; the method solves the problem that the total annual evaporation accumulation of the observation positioning site cannot be calculated due to incomplete annual data caused by faults such as power failure of instrument and equipment in the automatic observation process. The device can accurately acquire the change of the evaporation capacity data of different seasons and different weather every day every hour, can simultaneously observe the equipment in a networking way, remotely acquire the evaporation capacity data of the water surface, and know the running state of the equipment at any time. When the automatic equipment fails and falls off the network, the automatic record water level of the failure time can be checked, the missing data of the failure repair period can be checked, the change height of the sealing observation water column in the failure repair period can be checked, the data interpolation correction is carried out, and the data integrity and accuracy of the whole year are ensured.
The height of the communicating vessel drain port 21 is the same as the height of the top of the inside diameter of the refill inlet port 142.
The upper end of the evaporation pan 18 is provided with a bird-repellent sharp barrier 16. The evaporation pan 18 is provided with the bird preventing sharp fence 16, so that birds or animals can be prevented from entering the pan to take water/drink water, and the evaporation amount on the water surface is inaccurate, so that the accuracy is affected.
The bird-preventing sharp fence 16 comprises a fixed ring 19, a plurality of straight bars and a plurality of bending fences, wherein the upper parts of the bending fences are bent outwards; the straight bar fences and the bent fence are distributed in a staggered mode, and the straight bar fences and the bent fence are fixed through fixing rings 19. In the bird-preventing sharp barrier 16, a barrier net may be provided above the evaporation pan 18 to prevent birds or other animals from entering the drinking water.
The disc base 10 is provided with a horizontal adjusting device for adjusting the levelness of the disc base 10. The arrangement of the horizontal adjusting device can ensure that the device is in a horizontal state finally.
The horizontal adjusting device comprises a fixed threaded rod 11, an upper nut 121, a lower nut 122 and a horizontal bubble 13; the disc base 10 is provided with 6 screw fixing holes, every two screw fixing holes are in a group, each group of screw fixing holes are distributed at the edge of the disc base 10 at equal intervals, a fixed threaded rod 11 is arranged in the screw fixing holes in a penetrating way, the upper end and the lower end of the fixed threaded rod are respectively screwed into an upper nut 121 and a lower nut 122, and the edge of the disc base 10 is clamped between the upper nut 121 and the lower nut 122 and is locked by the two nuts; the horizontal bubble 13 is provided at the outer edge of the upper side of the disc base 10.
The inner diameter of the transparent sealed tubular container 6 is 200mm, and the height is 1500mm; the inner diameter of the water filling port 2 is 12mm, and the inner diameter of the air outlet 4 is 6mm; the diameters of the first mounting hole and the second mounting hole are 32mm, the outer diameter of the communicating water pipe 14 is 32mm, and the length of the communicating water pipe is 1000mm.
The semi-circular arc-shaped waterproof surface wave sheet 17 is arranged on the inner side of the evaporation pan 18, the semi-circular arc-shaped waterproof surface wave sheet 17 surrounds the periphery of the water supplementing air inlet 142, and the top end of the semi-circular arc-shaped waterproof surface wave sheet 17 is higher than the height of the top of the inner diameter of the water supplementing air inlet 142, so that errors caused by water surface fluctuation can be effectively prevented.
The outer wall of the evaporation pan 18 is coated with a heat insulation material layer 20; the collector 7 adopts a Aquaread LeveLine-BARO automatic recorder portable detector or a CTD collector 7. The outer wall of the evaporation pan 18 is coated with a heat insulation material layer 20, so as to prevent inaccurate evaporation capacity of the water surface caused by steaming phenomenon due to high-temperature irradiation of the metal outer wall of the evaporation pan 18 in summer. In this embodiment, the Aquaread LeveLine-BARO automated recorder portable detector or CTD collector 7 is an existing device, a commercially available product, and therefore no specific structural analysis is required. The portable detector of the Aquaread LeveLine-BARO automatic recorder or the CTD collector 7 is observed in a networking way through DTU equipment, a 3.6V lithium battery is arranged in the collector 7, and the portable detector can be used for more than about 2 years under the condition that the collection frequency is not high (once per hour). In this embodiment, collector 7 is selected from LeveLine-BARO and LeveLine-CTD monitors manufactured by aquaread, UK and sold and promoted by Shanghai green high environmental technologies, inc.; the DTU equipment purchases a model YT-DTU-600DTU wireless transmission module produced by Yuan Tian environmental protection company.
A testing method based on a negative pressure difference type automatic water surface evaporation measuring device comprises the following steps:
step one: opening the water valve switch 15 to allow the water injected from the water injection port 2 to flow to the evaporation pan 18; opening the water injection port sealing cover 1 and the air exhaust port sealing cover 3, injecting water from the water injection port 2 to the transparent sealing tubular container 6, and then discharging air in the transparent sealing tubular container 6 through the air exhaust port 4;
step two: when the water level line in the evaporation pan 18 reaches the top of the inner diameter of the water supplementing air inlet 142 communicated with the water pipe 14, a water surface evaporation level of the evaporation pan 18 with the inner diameter of 200mm is formed; closing the water valve switch 15, and continuing to fill water into the transparent sealed tubular container 6 from the water filling port 2, so that the liquid level in the transparent sealed tubular container 6 continuously rises;
step three: when the water level in the transparent sealed tubular container 6 reaches the top of the inner diameter of the front port 9 of the air pressure measuring chamber 8, a part of atmospheric air is sealed in the air pressure measuring chamber 8, and as the water level continues to rise, the air in the air pressure measuring chamber 8 is extruded by a water column, and the water level height is recorded by the collector 7;
step four: when the transparent sealing tubular container 6 is filled with water, the water filling port 2 is sealed by the water filling port sealing cover 1, and the air outlet 4 is sealed by the air outlet sealing cover 3; the water valve switch 15 is opened, the top of the inner cavity of the transparent sealed tubular container 6 instantaneously generates a negative pressure difference of 1500mm water column, and the 1500mm water column is sucked;
step five: when the weather rains, the rainfall falls into the evaporation dish 18, so that the water level of the evaporation level is increased, the amount of the increased water level is discharged from the communicating vessel water outlet 21 of the communicating vessel, the water level of the evaporation dish 18 is always kept unchanged, and the action is circulated;
step six: when the water level of the evaporation dish 18 is evaporated to generate water surface drop and the top of the inner diameter of the water supplementing air inlet 142 of the communicating water pipe 14 is exposed out of the water surface, air immediately enters the transparent sealing tubular container 6 from the water supplementing air inlet 142 of the communicating water pipe 14, meanwhile, the water with the same volume as that of the entering air is discharged and supplemented into the evaporation dish 18, and when the supplemented water seals the top of the inner diameter of the water supplementing air inlet 142 of the communicating water pipe 14, water inlet and air supplementing can be stopped instantaneously, so that one-time water supplementing action is completed;
step seven: and when the water surface continues to evaporate, the action of the step six is circulated, and the water column height of the water supplementing quantity is recorded by the collector 7.
In this embodiment, the device automatically adjusts the highest height of the sealing water column (i.e. adjusts the height of the transparent sealing tubular container 6) and the altitude relation according to the altitude, the sea level sealing water column is 10 meters at the highest height, the sealing water column is 6.7 meters at the highest height of 3000 meters at the altitude, and the sealing water column is 2.2 meters at the highest height of 7000 meters at the altitude.
According to different areas, the device has the average annual evaporation capacity (evaporation capacity) of 3518mm in the northwest arid area with the largest evaporation capacity in China, the Naersham salt lake of Qinghai province. The station with the smallest annual evaporation capacity in China is located in the Chuan Qian region without three sunnies in the day, the climate is moist, the cloud and rain are more, the wind speed is small, and the annual average evaporation capacity of the Jinberg weather station with the altitude of 1905.9 meters in the Sichuan is only 733.2mm. The evaporation amount referred to herein is the evaporation amount measured in a 20 cm caliber evaporation pan 18 commonly used in meteorological stations in China. According to different areas, the device can seal the evaporation capacity sealed water column for 2 to 10 years in the container, and the local evaporation capacity total data for 2 to 10 years can be accurately obtained without manual water supplement. (note: the device is not suitable for high altitude perennial icing, low altitude winter icing conditions).
The foregoing detailed description is directed to embodiments of the utility model which are not intended to limit the scope of the utility model, but rather to cover all modifications and variations within the scope of the utility model.
Claims (9)
1. The utility model provides a negative pressure differential formula surface of water evaporation automatic measuring device which characterized in that: comprises a transparent sealed tubular container, an evaporating dish, a communicating water pipe, an air pressure measuring chamber and a disc base; the top of the transparent sealed tubular container is provided with a water injection port and an exhaust port, the water injection port is provided with a water injection port sealing cover, and the exhaust port is provided with an exhaust port sealing cover; the front port of the air pressure measuring chamber is communicated with the transparent sealed tubular container, and the tail end port of the air pressure measuring chamber is connected with a collector for remotely acquiring evaporation capacity data and carrying out networking observation; the side surface of the bottom of the transparent sealed tubular container is provided with a first mounting hole, the side surface of the bottom of the evaporation vessel is provided with a second mounting hole, two ends of the communicating water pipe are respectively provided with a water draining air inlet and a water supplementing air inlet, the water draining air inlet is arranged in the first mounting hole and communicated with the transparent sealed tubular container, and the water supplementing air inlet is arranged in the second mounting hole and communicated with the evaporation vessel; the evaporating dish is provided with a communicating vessel, the communicating vessel comprises a communicating vessel fine tuning screw rod, the communicating vessel fine tuning screw rod is provided with a communicating pipeline penetrating the communicating vessel fine tuning screw rod, one end of the communicating vessel fine tuning screw rod extends into the evaporating dish and is communicated with the evaporating dish, and the other end of the communicating vessel fine tuning screw rod is a communicating vessel water outlet which is positioned outside the evaporating dish and is communicated with the outside; the two disc bases are respectively arranged at the lower side of the transparent sealed tubular container and the lower side of the evaporating dish; the height of the water draining air inlet is higher than that of the water supplementing air inlet, the height of the bottom of the transparent sealing tubular container is higher than that of the bottom of the evaporation dish, and the inner diameter of the transparent sealing tubular container is equal to that of the evaporation dish; the middle part of the communicating water pipe is provided with a water valve switch for controlling the on-off of the communicating water pipe; and a millimeter scale is arranged on the outer wall of the transparent sealed tubular container in the vertical direction, and the length of the millimeter scale is equal to the height of the transparent sealed tubular container.
2. The automatic measuring device for evaporation from water surface under negative pressure difference according to claim 1, wherein: the height of the water outlet of the communicating vessel is consistent with the height of the top of the inner diameter of the water supplementing air inlet.
3. The automatic measuring device for evaporation from water surface under negative pressure difference according to claim 1, wherein: the upper end of the evaporation pan is provided with an anti-bird sharp fence.
4. The negative pressure differential water surface evaporation automatic measurement device according to claim 3, wherein: the bird-preventing sharp fence comprises a fixed ring, a plurality of straight bar fences and a plurality of bending fences, wherein the upper parts of the bending fences are bent outwards; the straight bar fences and the bent fence are distributed in a staggered mode, and the straight bar fences and the bent fence are fixed through the fixing rings.
5. The automatic measuring device for evaporation from water surface under negative pressure difference according to claim 1, wherein: the disc base is provided with a horizontal adjusting device for adjusting levelness of the disc base.
6. The automatic measuring device for evaporation from water surface under negative pressure difference according to claim 5, wherein: the horizontal adjusting device comprises a fixed threaded rod, an upper nut, a lower nut and a horizontal bubble; the disc base is provided with 6 screw fixing holes, every two screw fixing holes are in a group, each group of screw fixing holes are distributed at the edge of the disc base at equal intervals, the fixed threaded rod is arranged in the screw fixing holes in a penetrating mode, the upper end and the lower end of the fixed threaded rod are screwed into the upper nut and the lower nut respectively, and the edge of the disc base is clamped between the upper nut and the lower nut and is locked by the two nuts; the horizontal bubble is arranged on the outer edge of the upper side surface of the disc base.
7. The automatic measuring device for evaporation from water surface under negative pressure difference according to claim 1, wherein: the inner diameter of the transparent sealed tubular container is 200mm, and the height is 1500mm; the inner diameter of the water filling port is 12mm, and the inner diameter of the air outlet is 6mm; the diameters of the first mounting hole and the second mounting hole are 32mm, the outer diameter of the communicating water pipe is 32mm, and the length of the communicating water pipe is 1000mm.
8. The automatic measuring device for evaporation from water surface under negative pressure difference according to claim 1, wherein: the evaporation dish is characterized in that a semicircular arc waterproof surface wave sheet is arranged on the inner side of the evaporation dish, the semicircular arc waterproof surface wave sheet surrounds the periphery of the water supplementing air inlet, and the top end of the semicircular arc waterproof surface wave sheet is higher than the top of the inner diameter of the water supplementing air inlet.
9. The automatic measuring device for evaporation from water surface under negative pressure difference according to claim 1, wherein: the outer wall of the evaporation dish is coated with a heat insulation material layer; the collector is a Aquaread LeveLine-BARO automatic recorder portable detector or a CTD collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320509391.4U CN219368859U (en) | 2023-03-15 | 2023-03-15 | Negative pressure difference type automatic water surface evaporation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320509391.4U CN219368859U (en) | 2023-03-15 | 2023-03-15 | Negative pressure difference type automatic water surface evaporation measuring device |
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| Publication Number | Publication Date |
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| CN219368859U true CN219368859U (en) | 2023-07-18 |
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| CN202320509391.4U Active CN219368859U (en) | 2023-03-15 | 2023-03-15 | Negative pressure difference type automatic water surface evaporation measuring device |
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| CN (1) | CN219368859U (en) |
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2023
- 2023-03-15 CN CN202320509391.4U patent/CN219368859U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |