CN202160477U - Device for simulating rainfall continuously in field - Google Patents
Device for simulating rainfall continuously in field Download PDFInfo
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- CN202160477U CN202160477U CN2011202727455U CN201120272745U CN202160477U CN 202160477 U CN202160477 U CN 202160477U CN 2011202727455 U CN2011202727455 U CN 2011202727455U CN 201120272745 U CN201120272745 U CN 201120272745U CN 202160477 U CN202160477 U CN 202160477U
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- rainfall
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- storage tank
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Abstract
The utility model provides a device for simulating rainfall continuously in the field, particularly relates to a device capable of simulating rainfall stably and continuously by utilizing automatic pressure difference, and belongs to the field of hydrological forecasting in water control projects. The device comprises a water storage tank, a water supply tank, a rainfall adjusting device, a rainfall device and a support; the water storage tank is connected in series with the water supply tank; water is supplied to the water supply tank through pressure difference in the system; and stable rainfall intensity required for an experiment is realized through the adoption of a one-way vent plug and the rainfall adjusting device. The device does not require a power device, is convenient for field experiments, is not required to stop during an experiment, can realize continuous water supply through the water storage tank, is simple and convenient to control the rainfall intensity, and can keep a constant state all the time.
Description
Technical field
A kind of field of the present invention continues rainfall simulator, especially utilizes automatic pressure reduction to realize the stable device that continues simulated rainfall, belongs to hydrologic forecast field in the river construction.
Background technology
In recent years, the defence of China's middle and small river mountain torrents early-warning and predicting and disaster has become difficult point (Liu Zhiyu is based on the middle and small river mountain torrents method for early warning and the application thereof of dynamic critical rainfall, Beijing Normal University's journal, 2010) outstanding in the present flood control and disaster reduction work.Numerous middle and small river distributes extensively, and station, most of basin reticular density is sparse, and monitoring means lacks, and the forecast scheme is unsound, belongs to typical non-avaible or scarce data basin.Therefore,, how deeply to excavate hillside structure feature informations such as landform, soil and basement rock characteristic, study its comprehensive effect, have important significance for theories and engineering practice and be worth the rainfall runoff response in these basins.(Troch, P.A., Dealing with landscape heterogeneity in watershed hydrology:a review of recent progress toward new hydrological theory, Geography Compass, 2009; Liu Suxia, the research method of no survey station River Basin Hydrology prediction (PUB), geographical science progress, 2010).
The incidence and development of hillside rainfall runoff receives influence of various factors such as geology, landform, soil, rainfall, in order to get the quantitative relationship between each factor clear, must carry out a large amount of single-factor contrast experiments.The natural rainfall situation is depended in field inspection experiment, and the annual number of times that rainfall runoff takes place is limited, and the natural rainfall incident has nonrepeatability, and the runoff observation on plots experimental work is very limited, and data accumulation is slow, far can not meet the needs of production.In order to overcome this difficulty, scientist has designed a series of precipitation device, manual simulation's natural rainfall.
Carry out at present artificially-simulated rainfall device that the rainfall runoff experiment uses both at home and abroad and mainly be divided into two types of open-air moving analog rainfall device and indoor fixed simulated rainfall devices.Wherein be fit to but all fail to be used widely, mainly have two problems: (1) open-air simulated rainfall device is general all to require on-the-spotly have enough places to set up instrument, and often can not directly satisfy in actual place; (2) the simulated rainfall device also needs power set, and mobility is relatively poor.Also there is the similar need problem of place and power on a large scale in indoor fixed simulated rainfall device.Therefore, the open-air rainfall runoff experimental study in hillside need a kind of simple in structure, be convenient to install and carry, rainfall simulator that the rainfall intensity controllability is good.
Summary of the invention
The technical problem that the present invention will solve is exactly: to the deficiency of above prior art, provide a kind of field of easy easy control to continue rainfall simulator.
The technical scheme that the present invention solves above technical problem is: a kind of field continues rainfall simulator; Comprise storage tank; Supply tank, rainfall adjusting device, rain controller and support; Described device storage tank is connected with supply tank, and the supply tank bottom is provided with the one-way ventilating plug, utilizes the rainfall adjusting device to realize the needed stable rainfall intensity of test.Storage tank is connected with supply tank, need not realize automatic water supplement, employing one-way ventilating plug and the needed stable rainfall intensity of rainfall adjusting device realization test of supply tank through intrasystem pressure differential by the exterior power device.
Described storage tank comprises: casing, water inlet, delivery port and air inlet;
Described supply tank comprises: casing, water inlet, exhaust outlet, one-way ventilating plug, air inlet adjustment valve;
Described rainfall adjusting device and rain controller are respectively flow-control telescoping tube and orifice type rainfall shower nozzle;
Be connected by the rubber leather hose between the delivery port of storage tank and the water inlet of supply tank, to realize from storage tank to the supply tank moisturizing;
Also adopt the rubber leather hose to be connected between the air inlet of storage tank and the supply tank exhaust outlet, to realize gas exchange;
Be connected by the rainfall adjusting device between the delivery port of supply tank and the rain controller,, promptly control rainfall intensity through rainfall adjusting device control supply tank water flow.
Connect with the supply tank design principle of automatic water supplement of storage tank:
Storage tank is connected up and down with supply tank, and establishing the interior water level of storage tank is that water level is h in h ', the supply tank, and the storage tank air inlet is communicated with the supply tank exhaust outlet; Then storage tank and supply tank water surface top air pressure p1 equates with p4, i.e. p1=p4, storage tank bottom pressure p5 equal air pressure p4 and the interior water body pressure sum of case above the storage tank water surface; Be p5=p4+ ρ gh '; So p5＞p4=p1, water flows to supply tank by storage tank, and the gas of supply tank flows to storage tank through exhaust outlet by supply tank; Wherein: ρ is the density of water, and g is an acceleration of gravity.
Stablize the realization of rainfall intensity:
Water body flows to the rain controller simulated rainfall in the supply tank under the inside and outside differential pressure effect, and along with water body in the case reduces, gas pressure intensity reduces gradually in the case; The case bottom pressure is also reducing, when case bottom pressure during less than atmospheric pressure, because the supply tank bottom is provided with unidirectional rubber porous plug; Then under the effect of inside and outside differential pressure, ambient atmos gets into the case internal gas pressure is increased, and when the pressure at the bottom of the supply tank equates with atmospheric pressure, reaches poised state; Along with the minimizing of water body in the case, ambient atmos constantly gets in the supply tank through porous plug, increases the case internal gas pressure; Still can reach poised state, thus rainfall simulator after reaching poised state, the pressure of supply tank outlet can remain unchanged all the time; After the rainfall adjusting device is fixing, can obtain stable rainfall intensity.
The invention has the advantages that: the present invention does not need power set, makes things convenient for field trial; Experimentation need not interrupt, and can realize continuing to supply water through storage tank; Rainfall intensity control is easy, and can remain steady state.
Description of drawings
Fig. 1 overall structure sketch map;
Fig. 2 rain controller structure front elevational schematic;
Fig. 3 rain controller structure schematic top plan view;
Fig. 4 device operation sketch map.
Among the figure, 1 supply tank water inlet, 2 supply tank exhaust outlets, 3 supply tanks, 4 rubber porous plugs; 5 jockeys, 6 volume control devices (groove and litter), 7 rain controllers, 8 storage tank water inlets, 9 storage tank exhaust outlets; 10 rubber leather hoses, 11 storage tanks, 12 spikes, 13 spray orifices, k1 sealing valve 1; K2 sealing valve 2, k3 sealing valve 3, p1---gas pressure intensity in the supply tank, p2---supply tank rubber porous plug place pressure, p3---supply tank and rubber leather hose junction pressure; P4---gas pressure intensity in the storage tank, p5---storage tank and rubber leather hose junction pressure, pa---atmospheric pressure, h---the height of water in the supply tank, h '---the height of water in the storage tank.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done further explain.
Storage tank 11 is connected up and down with supply tank 3, and sealing valve k3 is established in the centre, and storage tank air inlet 9 adopts rubber leather hose 10 to be communicated with supply tank exhaust outlet 2; Supply tank 3 outlets meet sealing valve k1; After connect rainfall adjusting device 6, insert rain controller 7 at last, sealing valve k2 is set before rain controller.
Under the original state; Gas pressure intensity p1 and p4 are atmospheric pressure pa in supply tank and the storage tank, and the pressure p2 of supply tank bottom and p3 equal air pressure p1 and case interior water body pressure sum, that is: the p2=p3=p1+ ρ gh of supply tank water surface top; Wherein: ρ is the density of water, and g is an acceleration of gravity.
Open sealing valve k1, k2 and k3, because storage tank air inlet 9 is communicated with supply tank exhaust outlet 2, so storage tank and supply tank water surface top air pressure p1 and p4 equate; Be p1=p4; Storage tank bottom pressure p5 equals water body pressure sum in storage tank water surface top air pressure p4 and the case, i.e. p5=p4+ ρ gh ', so p5＞p4=p1; Water flows to supply tank by storage tank, and the gas of supply tank flows to storage tank through exhaust outlet by supply tank.
Water body flows to the rain controller simulated rainfall in the supply tank under action of gravity, and along with water body in the case reduces, gas pressure intensity p1 reduces gradually in the case; Case bottom pressure p2 and p3 are also reducing, when case bottom pressure during less than atmospheric pressure, because the supply tank bottom is provided with unidirectional rubber porous plug; Then under the effect of inside and outside differential pressure; Ambient atmos gets into the case internal gas pressure is increased, and when the pressure p2 at the bottom of the supply tank equates with atmospheric pressure pa, reaches poised state, that is: p2=pa.
Along with the minimizing of water body in the case, the case internal gas pressure reduces, and ambient atmos gets in the supply tank through porous plug; Increase the case internal gas pressure, still can reach the poised state of p2=pa, because p3=p2; So rainfall simulator is after reaching poised state; The pressure p3 of supply tank outlet can remain unchanged all the time, only needs fixedly rainfall adjusting device, can simulate the rainfall of strength of stability.
Claims (4)
1. a field continues rainfall simulator; Comprise storage tank, supply tank, rainfall adjusting device; Rain controller and support; It is characterized in that: described device storage tank is connected with supply tank, and the supply tank bottom is provided with the one-way ventilating plug, utilizes the rainfall adjusting device to realize the needed stable rainfall intensity of test.
2. a kind of field according to claim 1 continues rainfall simulator, and it is characterized in that: described storage tank comprises casing, water inlet, delivery port and air inlet, and supply tank comprises casing, water inlet, exhaust outlet, one-way ventilating plug and air inlet adjustment valve;
Described rainfall adjusting device is the flow-control telescoping tube;
Rain controller is an orifice type rainfall shower nozzle.
3. a kind of field according to claim 1 continues rainfall simulator; It is characterized in that: be connected by the rubber leather hose between the delivery port of described storage tank and the water inlet of supply tank, adopt the rubber leather hose to be connected between the air inlet of storage tank and the supply tank exhaust outlet.
4. a kind of field according to claim 2 continues rainfall simulator, it is characterized in that: be connected by the rainfall adjusting device between the delivery port of described supply tank and the rain controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202727455U CN202160477U (en) | 2011-07-29 | 2011-07-29 | Device for simulating rainfall continuously in field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202727455U CN202160477U (en) | 2011-07-29 | 2011-07-29 | Device for simulating rainfall continuously in field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202160477U true CN202160477U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202727455U Expired - Fee Related CN202160477U (en) | 2011-07-29 | 2011-07-29 | Device for simulating rainfall continuously in field |
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| CN (1) | CN202160477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102265765A (en) * | 2011-07-29 | 2011-12-07 | 河海大学 | Device for continuously simulating rainfall in field |
| CN105137042A (en) * | 2015-09-16 | 2015-12-09 | 中国科学院亚热带农业生态研究所 | Method and device for determining construction position of water storage project on Karst slope |
-
2011
- 2011-07-29 CN CN2011202727455U patent/CN202160477U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102265765A (en) * | 2011-07-29 | 2011-12-07 | 河海大学 | Device for continuously simulating rainfall in field |
| CN105137042A (en) * | 2015-09-16 | 2015-12-09 | 中国科学院亚热带农业生态研究所 | Method and device for determining construction position of water storage project on Karst slope |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20120729 |