CN101592509A - A kind of automatic measuring system of phreatic water evaporation - Google Patents
A kind of automatic measuring system of phreatic water evaporation Download PDFInfo
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- CN101592509A CN101592509A CNA2009100745367A CN200910074536A CN101592509A CN 101592509 A CN101592509 A CN 101592509A CN A2009100745367 A CNA2009100745367 A CN A2009100745367A CN 200910074536 A CN200910074536 A CN 200910074536A CN 101592509 A CN101592509 A CN 101592509A
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- water
- ground post
- evaporation
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- phreatic
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 238000001704 evaporation Methods 0.000 title claims abstract description 52
- 230000008020 evaporation Effects 0.000 title claims abstract description 46
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 230000009189 diving Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000000704 physical effect Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000003556 assay Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The invention provides a kind of automatic measuring system of phreatic water evaporation that measures in direct mode, comprise that connecting or be connected formation round-robin reserve tank, supply tank, ground post and cistern successively by pipeline forms, described ground post is the cylindrical container of built-in ground, the a plurality of water delivering orifices of homeotropic alignment are connected with the tipping bucket that catchments of tipping bucket type flow measuring instrument on the cylinder of ground post, and the water that flows out through flow measuring instrument enters the water pump of cistern by the circulation line setting and adds to reserve tank; The present invention is according to dynamic principle of water balance, utilize constant pressure water supply equipment and tipping bucket type flow measuring instrument automatic gauge technology, measure the speed of evaporation from phreatic water under the different depth to water conditions by the rate of discharge of automatic mensuration ground post different parts, make the automatic monitoring of hydrology data become possibility, and improved the mensuration degree of accuracy greatly.Mensuration system architecture of the present invention is simple, operational management convenient.
Description
Technical field
The present invention relates to a kind of automatic measuring system of phreatic water evaporation and assay method, be mainly used in the evaporation capacity and the evaporation process of research mountain region or Plain diving, belong to the small-sized hydrologic data sensing equipment technical field of agricultural water conservation retaining.
Background technology
At present, the device that is applied to measure evaporation from phreatic water mainly is a lysimeter, calculates evaporation total amount and evaporation process by the SEA LEVEL VARIATION in the direct mensuration lysimeter; Perhaps lysimeter is linked to each other with the Ma Shi bottle, calculate different evaporation rate and evaporation total amounts constantly by the SEA LEVEL VARIATION of observation Ma Shi bottle; Relative first method, though realized constant-pressure water feeding system,, this method is not broken away from yet by measuring the conventional thought that water level calculates evaporation process, can't carry out automatically the evaporation from phreatic water process, continuously, measure accurately.
Summary of the invention
The objective of the invention is at the problems referred to above,, proposed a kind of method and system, realize measuring the evaporation from phreatic water situation of small watershed hydrogeology by supplying water and circulating, measure evaporation from phreatic water automatically according to dynamic principle of water balance.
Technical scheme of the present invention is achieved in that this automatic measuring system of phreatic water evaporation, the mensuration system comprises that connecting or be connected formation round-robin reserve tank, supply tank, ground post and cistern successively by pipeline forms, it is characterized in that: described ground post is the cylindrical container of built-in ground, the a plurality of water delivering orifices of homeotropic alignment are connected with the tipping bucket that catchments of tipping bucket type flow measuring instrument on the cylinder of ground post, and the water that flows out through flow measuring instrument enters the water pump of cistern by the circulation line setting and adds to reserve tank;
Start the counter of tipping bucket type flowmeter when measuring beginning, and water supply start; After current enter the ground post by funnel, owing to enter the evaporation flow of the water flow of ground post greater than diving, therefore, the water delivering orifice of some current by the ground post flowed out, this part current will be monitored constantly by the tipping bucket type flowmeter; Under the situation that water level is constant in the ground post, enter the water yield of ground post in the unit interval, should equal evaporation from phreatic water amount and the water yield sum that flows out the ground post through water delivering orifice, following formula is promptly arranged: V=10 (Q
3/ S)
In the formula: V-evaporation from phreatic water speed, mm/h
Q
1-enter the flow of ground post, ml/h
Q
2The flow of-outflow ground post, ml/h
Q
3-evaporation from phreatic water amount, ml/h
Q
3＝Q
1-Q
2
The cross-sectional area of S-ground post, cm
2
Enter and the difference of overflowing the water yield in the ground cylindrical container obtains the evaporation from phreatic water amount by the unit of account time.
Described automatic measuring system of phreatic water evaporation, described supply tank calibrates water yield Q1 constant pressure water supply in advance by valve, before measuring, at first according to the physical property of ground and the meteorological condition of locality, the maximum rate of guestimate evaporation from phreatic water is determined the rate of discharge Q of constant pressure water supply case by control valve
1, there are flowing out all the time with the water delivering orifice that guarantees its ground post when measuring is principle.
Described automatic measuring system of phreatic water evaporation, each water delivering orifice of described ground post is provided with by-pass valve control, to measure the evaporation capacity of different water level divings.
Described automatic measuring system of phreatic water evaporation, the water delivering orifice of described ground post are provided with loaded filter and go out to stop ground.
Described automatic measuring system of phreatic water evaporation, the loaded filter of the water delivering orifice setting of described ground post is made by the different sand of layer 2-4 grain size, rubble material, increases gradually along the direction particle of current.
The present invention compares the technical progress effect with present applied assay method and shows with system: changed the SEA LEVEL VARIATION of mensuration water supply installation or the conventional thought that Ma Shi water in bottle position changes, according to dynamic principle of water balance, utilize the tipping bucket type flow measuring instrument to measure the speed of evaporation from phreatic water under the different depth to water conditions by the rate of discharge of automatic mensuration ground post different parts, make the automatic monitoring of hydrology data become possibility, and improved the mensuration degree of accuracy greatly.Mensuration system architecture of the present invention is simple, operational management convenient.
Description of drawings
Fig. 1 is an automatic measuring system of phreatic water evaporation synoptic diagram of the present invention
Among the figure: 1, supply tank 2, ball-cock assembly 3, reserve tank 4, vertical tube 5, ground post 6, water delivering orifice 7, flow measuring instrument 8, pipeline 9, cistern 10, water pump 11, by-pass valve control
Embodiment
Automatic measuring system of phreatic water evaporation of the present invention shown in Fig. 1 is mainly circulated to be connected or to be connected by pipeline by reserve tank 1, constant pressure water supply case 3, ground post 5 and tipping bucket type flowmeter 9 and constitutes.The cylindrical container that the middle ground post 5 of system is built-in ground, the a plurality of water delivering orifices 6 of homeotropic alignment are connected with the tipping bucket 7 that catchments of tipping bucket type flow measuring instrument on the cylinder of ground post, and the water that flows out through flow measuring instrument enters the water pump (10) of cistern by circulation line 8 settings and adds to reserve tank (1); Can open wide setting with the connecting line of supply tank 1, be convenient to and the outlet water flow velocity of supply tank is demarcated, reduce error, as shown in Figure 1.
Start the counter of tipping bucket type flowmeter when measuring beginning, and water supply start; After current enter ground post (5) by funnel, owing to enter the evaporation flow of the water flow of ground post greater than diving, therefore, the water delivering orifice (6) of some current by the ground post flowed out, this part current will be monitored constantly by the tipping bucket type flowmeter; Under the situation that water level is constant in the ground post, enter the water yield of ground post in the unit interval, should equal evaporation from phreatic water amount and the water yield sum that flows out the ground post through water delivering orifice, following formula is promptly arranged: V=10 (Q
3/ S)
In the formula: V-evaporation from phreatic water speed, mm/h
Q
1-enter the flow of ground post, be setting value ml/h
Q
2-flow out the flow of ground post, measure ml/h by the tipping bucket type recording flow meter
Q
3-evaporation from phreatic water amount, ml/h Q
3=Q
1-Q
2By calculating
The cross-sectional area of S-ground post, cm
2
10-area and volume conversion factor
Enter and the difference of overflowing the water yield in the ground cylindrical container obtains the evaporation from phreatic water amount by the unit of account time.
In order to keep the discharge pressure of supply tank, supply tank is provided with ball-cock assembly 2, and it is constant to keep-up pressure between supply tank 1 and ground post 5 operation valve 11 to be set.Described supply tank calibrates water yield Q1 constant pressure water supply in advance by valve (11), before measuring, at first according to the physical property of ground and local meteorological condition, the maximum rate of guestimate evaporation from phreatic water is determined the rate of discharge Q of constant pressure water supply case by control valve (11)
1, there are flowing out all the time with the water delivering orifice that guarantees its ground post when measuring is principle.
The specific embodiment that the automatic measuring system of phreatic water evaporation that the present invention provides provides is that each water delivering orifice 6 of described ground post 5 is provided with by-pass valve control, to measure the evaporation capacity of different water level divings.
The water delivering orifice of described ground post 5 is provided with loaded filter and goes out to stop ground, and specific embodiment is that loaded filter is made by the different sand of layer 2-4 grain size, rubble material, increases gradually along the direction particle of current.
In the foregoing description tipping bucket type flow measuring instrument 7 of the present invention be the applicant in first to file, its detailed structure is open, there is no need to go into details at this.
Listed examples of the present invention is intended to set forth further the technical scheme of this evaporation from phreatic water process automatic measuring system and assay method, and protection scope of the present invention is not constituted any restriction.
Claims (5)
1, a kind of automatic measuring system of phreatic water evaporation, the mensuration system comprises that connecting or be connected formation round-robin reserve tank (1), supply tank (2), ground post (5) and cistern (9) successively by pipeline forms, it is characterized in that: described ground post (5) is the cylindrical container of built-in ground, the a plurality of water delivering orifices of homeotropic alignment (6) are connected with the tipping bucket that catchments (7) of tipping bucket type flow measuring instrument on the cylinder of ground post, and the water that flows out through flow measuring instrument enters the water pump (10) of cistern by circulation line (8) setting and adds to reserve tank (1);
Start the counter of tipping bucket type flowmeter when measuring beginning, and water supply start; After current enter ground post (5) by funnel, owing to enter the evaporation flow of the water flow of ground post greater than diving, therefore, the water delivering orifice (6) of some current by the ground post flowed out, this part current will be monitored constantly by the tipping bucket type flowmeter; Under the situation that water level is constant in the ground post, enter the water yield of ground post in the unit interval, should equal evaporation from phreatic water amount and the water yield sum that flows out the ground post through water delivering orifice, following formula: V=10 (Q3/S) is promptly arranged
In the formula: V-evaporation from phreatic water speed, mm/h
Q1-enters the flow of ground post, ml/h
Q2-flows out the flow of ground post, ml/h
Q3-evaporation from phreatic water amount, ml/h
Q3＝Q1-Q2
The cross-sectional area of S-ground post, cm
2
Enter and the difference of overflowing the water yield in the ground cylindrical container obtains the evaporation from phreatic water amount by the unit of account time.
2, automatic measuring system of phreatic water evaporation according to claim 1, it is characterized in that: described supply tank calibrates water yield Q1 constant pressure water supply in advance by valve (11), before measuring, at first according to the physical property of ground and the meteorological condition of locality, the maximum rate of guestimate evaporation from phreatic water is determined the rate of discharge Q of constant pressure water supply case by control valve (11)
1, there are flowing out all the time with the water delivering orifice that guarantees its ground post when measuring is principle.
3, automatic measuring system of phreatic water evaporation according to claim 1 is characterized in that: each water delivering orifice (6) of described ground post (5) is provided with by-pass valve control, to measure the evaporation capacity of different water level divings.
4, automatic measuring system of phreatic water evaporation according to claim 1 is characterized in that: the water delivering orifice of described ground post (5) is provided with loaded filter and goes out to stop ground.
5, automatic measuring system of phreatic water evaporation according to claim 1 is characterized in that: the loaded filter of the water delivering orifice setting of described ground post (5) is made by the different sand of layer 2-4 grain size, rubble material, increases gradually along the direction particle of current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100745367A CN101592509A (en) | 2009-06-26 | 2009-06-26 | A kind of automatic measuring system of phreatic water evaporation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100745367A CN101592509A (en) | 2009-06-26 | 2009-06-26 | A kind of automatic measuring system of phreatic water evaporation |
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|---|---|
| CN101592509A true CN101592509A (en) | 2009-12-02 |
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ID=41407288
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|---|---|---|---|
| CNA2009100745367A Pending CN101592509A (en) | 2009-06-26 | 2009-06-26 | A kind of automatic measuring system of phreatic water evaporation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115652A (en) * | 2013-01-24 | 2013-05-22 | 中国工程物理研究院化工材料研究所 | Sealed working cylinder liquid level measurement method and sealed working cylinder liquid level measurement device |
| CN103743451A (en) * | 2014-01-29 | 2014-04-23 | 长安大学 | Full-automatic evaporation and precipitation metering device |
| CN107179260A (en) * | 2017-06-15 | 2017-09-19 | 中国水利水电科学研究院 | Underground water evaporation from phreatic water measuring system and method based on technology of Internet of things |
| CN108572121A (en) * | 2018-03-14 | 2018-09-25 | 中国科学院东北地理与农业生态研究所 | Solid matter aggregation evaporating-osmosis performance detection device |
-
2009
- 2009-06-26 CN CNA2009100745367A patent/CN101592509A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115652A (en) * | 2013-01-24 | 2013-05-22 | 中国工程物理研究院化工材料研究所 | Sealed working cylinder liquid level measurement method and sealed working cylinder liquid level measurement device |
| CN103115652B (en) * | 2013-01-24 | 2015-01-21 | 中国工程物理研究院化工材料研究所 | Sealed working cylinder liquid level measurement method and sealed working cylinder liquid level measurement device |
| CN103743451A (en) * | 2014-01-29 | 2014-04-23 | 长安大学 | Full-automatic evaporation and precipitation metering device |
| CN103743451B (en) * | 2014-01-29 | 2016-05-18 | 长安大学 | A kind of full-automatic evaporation precipitation metering device |
| CN107179260A (en) * | 2017-06-15 | 2017-09-19 | 中国水利水电科学研究院 | Underground water evaporation from phreatic water measuring system and method based on technology of Internet of things |
| CN107179260B (en) * | 2017-06-15 | 2024-03-08 | 中国水利水电科学研究院 | Groundwater diving evaporation measurement system and method based on Internet of things technology |
| CN108572121A (en) * | 2018-03-14 | 2018-09-25 | 中国科学院东北地理与农业生态研究所 | Solid matter aggregation evaporating-osmosis performance detection device |
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Open date: 20091202 |