CN105806667B - Portable precipitation isotope sampler - Google Patents
Portable precipitation isotope sampler Download PDFInfo
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- CN105806667B CN105806667B CN201610331108.8A CN201610331108A CN105806667B CN 105806667 B CN105806667 B CN 105806667B CN 201610331108 A CN201610331108 A CN 201610331108A CN 105806667 B CN105806667 B CN 105806667B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N2001/2007—Flow conveyors
- G01N2001/2021—Flow conveyors falling under gravity
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- Hydrology & Water Resources (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a portable precipitation isotope sampler which comprises a precipitation collection funnel, a dirt blocking net, an air vent, a water inlet, an air hose, a water delivery conduit, a water storage sleeve, a buoy, a water outlet and a fixed support. The method is mainly characterized in that: the tightness of the sampler to the water sample is improved by using three technical measures of a rotary baffle capable of being opened and closed by itself, a long and thin ventilation hose and a circular ring buoy covering the liquid level of the water sample, the truest isotope characteristics of the precipitation sample in the sampler are maintained, and reliable precipitation isotope data are provided for related researches. In addition, the invention has simple structure, small volume and low cost, and is very suitable for large-area popularization and use in the field.
Description
Technical Field
The invention relates to a field portable precipitation sampler designed for researching atmospheric precipitation isotopes.
Background
Isotope hydrology is a discipline that applies isotope theory and methods to study hydrologic problems. From the end of the 50 s of the 20 th century, isotope hydrology has been developed to a great extent as an independent discipline, and the research and application fields are expanding. The isotope hydrology theory is widely applied to various fields such as hydrology, water resources, water environment, geology and the like, and particularly is widely applied to research fields such as water vapor sources, rainfall runoff relations, water resource evaluation in arid and semiarid regions, groundwater supply, climate change, water circulation and the like. The acquisition and accurate reflection of precipitation isotope data is particularly important as background information and premise foundation in the research field. Because most precipitation samplers are arranged in the field and the precipitation time is difficult to predict, the water sample is difficult to store in a timely sealing mode and monitor and analyze after each precipitation is finished. The water sample is exposed outdoors for a long time, so that the water sample is easy to evaporate and exchange with external water, the isotope content of the precipitation sample is distorted, and the original isotope characteristics of the precipitation cannot be accurately reflected. Therefore, in order to accurately reflect the isotope content of precipitation, the precipitation sample must be finely collected, and the precipitation sampler must solve the problems of evaporation of the water sample and isotope exchange with external water.
Most of the existing precipitation samplers are communicated with the external environment, and the evaporation area is reduced at most, so that the aim of reducing partial water evaporation is fulfilled, but evaporation and diffusion of collected water samples and exchange with external water molecules cannot be completely prevented, and the requirement of precipitation isotope sampling cannot be met. The automatic precipitation sampler driven by some motors is characterized in that under the control of a sensor and an electronic controller, a sealing cover is automatically opened and closed according to whether precipitation occurs or not, evaporation and diffusion of collected water samples and exchange with external water molecules are reduced, but the device has the advantages of complex structure, high manufacturing cost, large volume and high failure rate, and is difficult to popularize and use in the field. Therefore, it is urgently needed to provide a scientific portable precipitation isotope sampling device.
Disclosure of Invention
In order to solve the defects and shortcomings of the existing precipitation sampling device, the invention aims to provide the portable precipitation isotope sampler which is simple in structure, good in sealing performance, low in manufacturing cost and suitable for being popularized and used in the field. The sampler ensures that the sampler can effectively prevent water sample pollution, evaporation and exchange with external water vapor isotopes when conveniently collecting precipitation in the field, thereby obtaining real and reliable precipitation isotope data. In order to achieve the above purpose, the present invention adopts the following technical scheme:
a portable rainfall isotope sampler mainly comprises a rainfall collection funnel, a dirt blocking net, an air vent, a water inlet, an air hose, a water delivery conduit, a water storage sleeve, a buoy, a water outlet and a fixed support. The precipitation collection funnel is located the uppermost portion of whole sample thief, and the funnel upper cross-section is circular opening, and the lower extreme has two concentric circles connector of a big one-and-a-small, and outside big mouth is connected with the water storage sleeve pipe, and inside osculum is connected with the water inlet. The dirt blocking net is a stainless steel sheet screen and is arranged in the collecting hopper. The upper end of the water inlet is connected with the collecting funnel, and the lower end is connected with the water delivery conduit. The buoy is a plastic circular ring with the outer ring diameter slightly smaller than the inner diameter of the water storage sleeve and the inner ring diameter slightly larger than the outer diameter of the water delivery conduit, and is sleeved on the water delivery conduit and can move up and down along the water delivery conduit. The upper end of the water storage sleeve is connected with the lower end of the collecting funnel, and the lower end of the water storage sleeve is connected with the water outlet, so that the purposes of protecting the internal components and storing water are achieved. The air hose is a silica gel hose with large length and small inner diameter, one end of the air hose is connected with the air vent, and the air hose is spirally wound and fixed by taking the water storage sleeve as a central shaft. The sampler can be sleeved on the fixed support, and the bottom of the fixed support is of a steel nail structure, so that the sampler is convenient to install in the field.
The invention has the following advantages and positive effects:
the invention adopts 3 technical measures to meet the sampling requirement of precipitation isotopes, namely a rotating baffle, a ventilation hose and a buoy. When the precipitation is gathered into the water inlet, the water inlet is opened under the influence of lateral water pressure, and when the precipitation is finished, the water inlet is closed under the influence of gravity and the suction of the internal magnetic block by the baffle, so that the air fluidity in the sampler is controlled, and the evaporation and diffusion of the collected water sample are restrained. The ventilation hose adopts a silica gel hose with the length of 2m and the inner diameter of 3mm, which not only balances the internal and external air pressure of the sampler to ensure that the precipitation smoothly enters the sampler, but also reduces the concentration gradient of the water vapor inside and outside the sampler and inhibits the diffusion and exchange of the water vapor inside and outside the sampler due to the long length and the small inner diameter of the ventilation hose. The circular buoy is arranged in the water storage pipe and freely floats along with the liquid level of the water sample, so that the contact area and the evaporation area of the water sample and air are reduced, the re-evaporation and re-diffusion of the water sample in the sampler are restrained, the circular buoy can be used as a water quantity pointer of a rainfall scale on the wall of the water storage pipe, and the rainfall is convenient to read. The lower end of the invention adopts a knob type water outlet design, which is convenient for transferring the water sample into the sealed bottle and bringing the water sample back to a laboratory for measurement and analysis.
In addition, the invention has simple structure, good sealing performance, small volume and low manufacturing cost, and is very suitable for large-area use in the field.
Drawings
FIG. 1 (a) is a schematic diagram of the structure of the present invention; FIG. 1 (b) is a longitudinal cross-sectional view of the present invention;
FIG. 2 (a) is a schematic view of the structure of the collecting funnel and the vent pipe according to the present invention; FIG. 2 (b) is a longitudinal cross-sectional view of the collection funnel and vent tube of the present invention;
FIG. 3 (a) is a schematic view of the structure of the water inlet of the present invention; FIG. 3 (b) is a longitudinal cross-sectional view of the water inlet of the present invention;
FIG. 4 (a) is a schematic view of the structure of the water outlet of the present invention; FIG. 4 (b) is a longitudinal cross-sectional view of the water outlet of the present invention; FIG. 4 (c) is a schematic diagram of the structure of the water outlet knob switch of the present invention;
FIG. 5 is a schematic view of the installation of the present invention;
FIG. 6 is a schematic view of the overall structure of the present invention installed in the field;
the label marks in the figures represent: 1 is a precipitation collection funnel, 2 is a dirt blocking net, 3 is an air vent, 4 is a water inlet, 5 is an air hose, 6 is a water delivery conduit, 7 is a water storage sleeve, 8 is a buoy, 9 is a water outlet, 10 is a knob switch, 11 is a water inlet baffle, and 12 is a fixed bracket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the water delivery conduit (6) is an organic glass tube with the inner diameter of 20mm and the length of 680mm, and the upper end of the organic glass tube is sleeved with the water inlet (4). The buoy (8) is a plastic circular ring with the outer ring diameter of 48mm, the inner ring diameter of 24mm and the thickness of 15mm, the outer ring diameter of the plastic circular ring is slightly smaller than the inner diameter of the water storage sleeve, the inner ring diameter of the plastic circular ring is slightly larger than the outer diameter of the water delivery catheter, the plastic circular ring is sleeved on the water delivery catheter (6), floats on the liquid level of a water sample and floats up and down along with the height of the liquid level of the water sample. The water storage sleeve (7) is an organic glass tube with the inner diameter of 50mm and the length of 700mm, the upper end of the organic glass tube is sleeved with the collecting funnel (1), the lower end of the organic glass tube is sleeved with the water outlet (9), the tube wall is marked with precipitation scales, and the precipitation can be directly read.
As shown in fig. 2, the precipitation collection funnel (1) is made of high-density polyethylene, is positioned at the uppermost part of the sampler, has a circular opening with the diameter of 100mm and is provided with a blade-shaped funnel mouth wall, and is beneficial to cutting raindrops and accurately collecting rainfall. The middle part of the funnel is provided with a cylindrical vent hole (3) which is transversely protruded and used for balancing the internal and external air pressure of the sampler. The lower end of the funnel is provided with a big end and a small end which are concentric circles, the big end at the outer side is used for being connected with a water storage sleeve (7), and the small end at the inner side is used for being connected with a water inlet (4). The dirt blocking net (2) is a thin sheet screen with the holes of 2mm which are made of stainless steel wires and are arranged in the precipitation collecting funnel (1), so that sundries such as leaves are prevented from falling into the sampler to influence precipitation collection. The ventilation hose (5) is a silica gel hose with the length of 2m and the inner diameter of 3mm, one end of the ventilation hose is connected with the ventilation hole (3), and the ventilation hose is spirally wound and fixed by taking the water storage sleeve (7) as a central shaft.
As shown in FIG. 3, the water inlet (4) is made of high-density polyethylene, the upper end of the water inlet is connected with the collecting funnel (1), the lower end of the water inlet is connected with the water delivery guide pipe (6), the lower part of the water inlet (4) is provided with a baffle plate (11) which rotates along a horizontal axis, permanent magnet blocks are arranged in the lower end of the baffle plate, the wall of the lower end of the water inlet (4) is provided with the iron blocks, when precipitation is collected into the water inlet (4), the baffle plate (11) is influenced by lateral water pressure, the water inlet (4) is opened along the horizontal axis in a rotating way, and when the water inlet (4) is free of water, the baffle plate (11) is influenced by gravity and the suction of the lower end magnet blocks, and the water inlet (4) is closed along the horizontal axis in a rotating way.
As shown in fig. 4, the water outlet (9) is made of high-density polyethylene, a knob switch (10) is arranged in the water outlet, and the purpose of opening and closing the water outlet (9) can be achieved by rotating the knob switch (10).
As shown in fig. 5 and 6, the components are strictly cleaned and dried, and then are sequentially connected and installed on a fixed bracket (12) with the height of 1.3m, so as to prevent surrounding ground water bodies from splashing into the sampler during precipitation and cause water sample pollution. When precipitation arrives, rainwater can be gathered by the collecting hopper (1) through the dirt blocking screen (2), and the rainwater is converged to the water inlet (4), and the baffle (11) is influenced by lateral water pressure and is screwed on the horizontal shaft to open the water inlet (4), and the opening size of the water inlet (4) can be automatically controlled according to the intensity of the rainwater by the baffle (11). And after the precipitation is finished, the baffle (11) automatically falls under the action of gravity and magnetic attraction to close the water inlet (4). The staff can rotate the knob switch (10) of the water outlet (9) to open and close the water outlet (9) when collecting the water sample, the water sample is stored in a sealing way by using a matched bottle, and the water sample is moved to a laboratory for measurement and analysis. The wall of the water storage sleeve (7) is marked with precipitation scales, and precipitation can be directly read according to the position of the buoy (8).
Claims (4)
1. The utility model provides a portable precipitation isotope sampler, includes precipitation collection funnel (1), blocks dirty net (2), air vent (3), water inlet (4), ventilation hose (5), water delivery pipe (6), water storage sleeve pipe (7), buoy (8), delivery port (9) and fixed bolster (12), its characterized in that: the precipitation collection funnel (1) is positioned at the uppermost part of the whole sampler, the lower end of the precipitation collection funnel is provided with a large concentric circle connecting port and a small concentric circle connecting port, the large outer port is connected with the water storage sleeve (7), and the small inner port is connected with the water inlet (4); the dirt blocking net (2) is a stainless steel sheet screen and is arranged in the collecting hopper; the upper end of the water inlet (4) is connected with the collecting funnel (1), and the lower end is connected with the water delivery conduit (6); the buoy (8) is a plastic ring and is sleeved on the water delivery conduit and can move up and down along the water delivery conduit; the wall of the water storage sleeve (7) is marked with precipitation scales, the upper end of the water storage sleeve is connected with the lower end of the collection funnel (1) through a port, and the lower end of the water storage sleeve is connected with the water outlet (9); one end of the ventilation hose (5) is connected with the ventilation hole (3) and spirally wound and fixed by taking the water storage sleeve (7) as a central shaft; the sampler can be sleeved on the fixed bracket (12), and the bottom of the fixed bracket (12) is of a steel nail structure, so that the sampler is convenient to install in the field;
the lower part of the water inlet (4) is provided with a baffle (11) rotating along a horizontal axis, a permanent magnet block is arranged at the lower end of the baffle (11), an iron block is arranged at the pipe wall of the lower end of the water inlet (4), when precipitation is gathered into the water inlet (4), the baffle (11) is influenced by lateral water pressure, the water inlet (4) is opened by rotating upwards along the horizontal axis, when the water inlet (4) is anhydrous, the baffle (11) is influenced by gravity and the suction of the magnet block, and the water inlet (4) is closed by rotating downwards along the horizontal axis;
the air hose (5) is a silica gel hose with large length and small inner diameter, one end of the air hose is connected with the air vent (3), and the air hose is spirally wound and fixed by taking the water storage sleeve (7) as a central shaft.
2. A portable precipitation isotope sampler as claimed in claim 1, wherein: the upper section of the precipitation collection funnel (1) is a circular opening with the diameter of 100mm, and the wall of the funnel opening is in a blade shape, so that the rain drops can be cut easily.
3. A portable precipitation isotope sampler as claimed in claim 1, wherein: a knob switch (10) is arranged in the water outlet (9), and the water outlet (9) can be opened and closed by rotating the knob switch (10).
4. A portable precipitation isotope sampler as claimed in claim 1, wherein: the buoy (8) is a plastic ring with the outer ring diameter slightly smaller than the inner diameter of the water storage sleeve (7), the inner ring diameter slightly larger than the outer diameter of the water delivery conduit (6), the plastic ring is sleeved on the water delivery conduit, floats on the liquid level of the water sample and floats up and down along with the height of the liquid level of the water sample, and can be matched with precipitation scales marked on the wall of the water storage sleeve (7) to directly read precipitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331108.8A CN105806667B (en) | 2016-05-11 | 2016-05-11 | Portable precipitation isotope sampler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331108.8A CN105806667B (en) | 2016-05-11 | 2016-05-11 | Portable precipitation isotope sampler |
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| CN105806667A CN105806667A (en) | 2016-07-27 |
| CN105806667B true CN105806667B (en) | 2023-08-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106840779A (en) * | 2016-12-05 | 2017-06-13 | 柳州金创科技有限责任公司 | A kind of auto parts odor test sampler |
| CN107525697B (en) * | 2017-10-13 | 2024-02-02 | 山西师范大学 | High-altitude water vapor isotope acquisition device |
| LU100486B1 (en) * | 2017-10-20 | 2019-04-25 | Luxembourg Inst Science & Tech List | Automatic water sampler apparatus |
| CN109827813B (en) * | 2019-03-04 | 2021-10-15 | 中国地质科学院水文地质环境地质研究所 | Atmospheric precipitation isotope analysis month accumulation sample collection device |
| CN110108516A (en) * | 2019-04-30 | 2019-08-09 | 佛山市稚蒙环境科技有限公司 | The water faucet structure of Portable sampling container |
| CN112903369A (en) * | 2021-01-15 | 2021-06-04 | 杭州绿洁环境科技股份有限公司 | Online wet settlement collection long-distance collection and sample separation system |
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