CN104503492B - Water level regulating device of sealed water tank - Google Patents
Water level regulating device of sealed water tank Download PDFInfo
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- CN104503492B CN104503492B CN201410770267.9A CN201410770267A CN104503492B CN 104503492 B CN104503492 B CN 104503492B CN 201410770267 A CN201410770267 A CN 201410770267A CN 104503492 B CN104503492 B CN 104503492B
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- water level
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- type cistern
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Abstract
The invention discloses a water level regulating device of a sealed water tank. The water level regulating device of the sealed water tank comprises a sealed water tank (1), wherein the bottom of a water replenishing pipe (2) and the bottom of the sealed water tank (1) are communicated with each other and are annularly arranged in the water tank; the water replenishing pipe (2) is provided with a valve (3); the sealed water tank (1) is communicated with a water discharging pipe (4) through more than one water outlet; the water discharging pipe (4) is provided with a water discharging pump (5); a water level detector (6) is arranged at the top of the sealed water tank (1) and is connected with a power regulator (7) by virtue of a signal wire (8); subsequently, the power regulator (7) is connected with the water discharging pump (5) and is used for controlling the flow of the water discharging pump (5); a water charging and discharging hole (9) communicated with a model water channel system is also formed in the sealed water tank (1). The water level regulating device is scientific and reliable in principle, high in integration level, simple in structure, easy to manufacture, convenient to mount, reliable to operate, high in working efficiency and precise in control; the device is conveniently integrated with the modern automatic control technology; the device can be used for effectively regulating the water level of a model test sealed water tank of a hydropower station.
Description
Technical field
The present invention relates to water level control apparatus, specifically a kind of water level control apparatus of sealing type cistern.
Background technology
In the generating system by piloting water physical experiments of power station, model generating system by piloting water is by model machine set system (bag
Include shaft coupling and support of spiral case, draft tube, runner, water distributor, synchronous generator, electromotor and the hydraulic turbine etc.) and mould
Type channel system (include water inlet, upstream conduit pipe/channel, model unit, draft tube, tail lock groove, tail water prop up hole,
Tailrace tunnel/tailrace channel, outlet etc.) two parts composition, and this two parts is organically combined, jointly it is positioned over circulation
In.Circulation is then connected with the water inlet of model channel system, outlet by upstream and downstream water tank, forms complete water
Power station generating system by piloting water physical experiments platform.
Upstream and downstream water tank primarily serves the upstream and downstream reservoir simulating in prototype in model test, is model diversion and power
System provides constant water level.Typically require water tank can provide the water level of differing heights, meet and carry out electricity under different tailwater levels
The requirement of model test of standing；Meanwhile, in order to really reflect the water level characteristic of prototype reservoir, then require the water level in water tank at certain
It is steady state value under one operating condition of test.Because the water tank volume ratio in test is relatively limited, therefore keep constant level, reduce as far as possible
In test, the fluctuation of water level has become the core of waterbox design to be located.
Conventional power station model test water tank is generally configured to open type, provides a perseverance by the pattern of par groove overflow
Determine water level, be substantially a kind of open loop water level control system.But the available head luffing that open type water tank can provide is less,
And the restriction of a size that is easily put to the test, because the peak level that it can be provided by have to be lower than test site overhead height,
Low water level necessarily be greater than test site ground level；And the versatility of water tank is poor, different model generating system by piloting water must be equipped with
Specific open type water tank, increases equipment investment.
Sealing type cistern can be very good to solve above several point defects of open type water tank.Its water tank integrally be closing and
Ambient atmosphere isolation；There is certain air on the water surface within water tank, the side that is evacuated, inflates can be carried out by water tank
Formula changes the gas pressure within water tank on request, thus simulating the pressure value of any needs；This function also makes an envelope
Closed type water tank can be used in the different tests in model power station.So planting water tank to have obtained increasing use, it is with rear mold
The development trend of type test water tank.
For sealing type cistern, the Stress control (pumping, inflation) of internal gas is related to the performance of water tank function itself,
But can easier realize；In water tank, the one side that controls of water level is related to the applying of pressure value, is on the other hand related to test
The verity of analog result and accuracy, particularly important, and because its airtight characteristic is it is impossible to utilize flat in conventional water tank
Tank overflow manner is providing arbitrary constant water level.Therefore, in order to realize safely, effectively, easily making of sealing type cistern
With it is necessary to invent suitable water level control apparatus.
Content of the invention
The purpose of the present invention is the defect existing for prior art, provides a kind of water level regulation of sealing type cistern to fill
Put, on the premise of ensureing the normal enforcement of sealing type cistern pumping, aerification function, the water level in water tank can be maintained a finger
Definite value keeps constant, even if having less fluctuation also in the range of test error acceptable.
A kind of water level control apparatus of sealing type cistern, including sealing type cistern 1, described filling pipe 2 and sealing type cistern 1
Bottom be connected, and ringwise arrange inside water tank, filling pipe 2 is provided with valve 3；Described sealing type cistern 1 passes through one
Individual above outlet is connected with drain pipe 4, and drain pipe 4 is provided with draining pump 5；Described sealing type cistern 1 top is provided with water level
Survey meter 6, water level gauge 6 is connected with power regulator 7 by holding wire 8, and power regulator 7 is connected with draining pump 5 then,
For controlling the flow of draining pump 5；Also have, on described sealing type cistern 1, the inlet/outlet being connected with model channel system
9.
The water level of described sealing type cistern 1 outlet is higher than the water level of sealing type cistern 1 water inlet.
The operation principle of the present invention is as follows with process: by real-time measurement and the feedback of water level in water tank, to control draining
The drain discharge of pump, forms a closed-loop feedback control system, and adoption rate controlling unit, and water level deviation datum level is also got over
Greatly, corresponding draining discharge of pump is also bigger, so can quickly reach water level regulation purpose, obtain the water level value of requirement.
During specific works, it is first shut off draining pump, by filling pipe feed-tank moisturizing, to required water level, be then shut off filling pipe, startup is closed
Ring Water-Level Supervising System, and by water level on the basis of water level settings now, the power of corresponding draining pump is 0；On-test same
When, draining pump is devoted oneself to work also according to the change of water level in water tank, is adjusted in real time, adjusts water level in the short period of time
Save to required water level.
The advantage of the water level control apparatus of inventive closure formula water tank is: apparatus of the present invention scientific in principle is reliable, integrated level
Height, structure is simple, easy to manufacture, easy for installation, reliable, high working efficiency, and control is accurate, be easy to the control automatically of integration modern times
Technology processed.The water level regulation of power station model test sealing type cistern can effectively be completed.
Brief description
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the side view of the present invention.
Fig. 3 is the upward view of the present invention.
Fig. 4 is the internal view of Fig. 1.
Fig. 5 is the operation principle block diagram of the present invention.
In figure, 1 is sealing type cistern, and 2 is filling pipe, and 3 is valve, and 4 is drain pipe, and 5 is draining pump, and 6 is water-level detecting
Instrument, 7 is power regulator, and 8 is holding wire, and 9 is inlet/outlet.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is further described.As Figure 1-5, a kind of water level of sealing type cistern
Adjusting means, is made up of following part: sealing type cistern 1, filling pipe 2, valve 3, drain pipe 4, draining pump 5, water level gauge
6th, the inlet/outlet 9 of power regulator 7, holding wire 8, model channel system.Filling pipe 2 draws in the bottom of sealing type cistern 1
Enter, and in water tank inner annular arrangement, one valve 3 of device on filling pipe 2, drain pipe 4 is in the relatively low position of sealing type cistern 1
Water outlet, a draining pump 5 is installed thereon, water level gauge 6 is arranged in the top within water tank, the water level signal of its measurement is by signal
Line 8 sends power regulator 7 to, and power regulator 7 is according to the drain discharge of the Signal Regulation draining pump 5 receiving.
The present invention is achieved in that sealing type cistern in addition to being connected with model channel system by entery and delivery port, leads to
Often there are a filling pipe and a drain pipe, filling pipe connects the water supply line of circulation, and drain pipe connects circulation
Backwater channel.The present invention realizes goal of the invention by being optimized design to filling pipe and drain pipe.Filling pipe is at water tank bottom
Portion introduces, and by one be arranged in the annular of water tank bottom, the pipeline of uniform openings by institute's moisturizing uniformly, stable introducing water
Case, simultaneously works as the effect of energy dissipating；Valve controlling flow is set on filling pipe.Above drain pipe, one draining pump of device, will exceed
The water on water level is required to extract out；For precise control pump-out, arrange one or more water level gauges in water tank inner top
(need to be evenly arranged when multiple, and take its meansigma methods), the position of the real time measure water level, and this water level signal is passed through a feedback dress
Put and be transferred to draining pump, configure a programmable power regulator on draining pump, this instrument can be by accepting water level simultaneously
The signal that survey meter transmission comes adjusts the power (draw water flow) of draining pump, water level on the basis of the water level value of test requirements document
(0), the power setting of the corresponding draining pump of this water level is 0, does not draw water, when in water tank, water level is higher than datum level, power
More than 0, draining pump just starts draining, and water level is higher higher than the value of reference value, and the power of pumping water is bigger, when water level is extracted into
During equal to datum level, water pump quits work again, so repeatedly, forms a Real-time Feedback, the closed loop monitoring water level of real-time control
System.In order that the water level value that survey meter measures can truly reflect water level everywhere in water tank, water level gauge can be increased
Quantity, and they are uniformly distributed on the water surface everywhere；Draw water what water level in feed-tank brought to reduce draining pump simultaneously
Interference, can arrange 4 drainpipe outlets, and they are pooled on a pipeline, then draining pump is installed on total after collecting
Guan Shang；4 drain pipies can uniformly be arranged in the bottom of water tank everywhere (less than water tank lowest water level it is ensured that drain pipe is to have pressure,
And leave certain pressure nargin).
Claims (1)
1. a kind of water level control apparatus of sealing type cistern, including sealing type cistern (1), (1) sealing type cistern is used in model examination
Test the upstream and downstream reservoir in simulation prototype, provide constant water level for model generating system by piloting water it is characterised in that: filling pipe
(2) bottom (1) is connected with sealing type cistern, and ringwise arranges inside water tank；Filling pipe introduces in water tank bottom, and leads to
Cross and one be arranged in the annular of water tank bottom, institute's moisturizing uniformly, is smoothly introduced water tank by the pipeline of uniform openings, simultaneously work as disappearing
The effect of energy；(3) (2) filling pipe be provided with valve；(1) described sealing type cistern passes through more than one outlet and drain pipe (4) phase
Connection, (5) (4) drain pipe be provided with draining pump；(1) (6) top is provided with water level gauge to described sealing type cistern, and water level gauge is (6)
(8) (7) it is connected with power regulator by holding wire, (5) (7) power regulator be connected with draining pump then, for controlling draining pump
(5) flow；(1) described sealing type cistern is gone up and is also had the inlet/outlet being connected with model channel system (9)；Described closed
The water level of water tank (1) outlet is higher than the water level of sealing type cistern (1) water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410770267.9A CN104503492B (en) | 2014-12-15 | 2014-12-15 | Water level regulating device of sealed water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410770267.9A CN104503492B (en) | 2014-12-15 | 2014-12-15 | Water level regulating device of sealed water tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104503492A CN104503492A (en) | 2015-04-08 |
| CN104503492B true CN104503492B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410770267.9A Active CN104503492B (en) | 2014-12-15 | 2014-12-15 | Water level regulating device of sealed water tank |
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| CN (1) | CN104503492B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897216B (en) * | 2015-06-19 | 2017-11-28 | 河海大学 | A kind of grated plate type water consumption measurement and control device suitable for field irrigation |
| CN108827591A (en) * | 2018-04-02 | 2018-11-16 | 北京大学 | A kind of gravity type circulating water tunnel for the measurement of underwater complex surface drag reduction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266192A (en) * | 2008-04-18 | 2008-09-17 | 浙江大学 | Liquid level variable constant pressure water supply system |
| CN103049009A (en) * | 2012-03-31 | 2013-04-17 | 邵阳学院 | Continuous water level control system based on singlechip |
| CN202956673U (en) * | 2012-11-14 | 2013-05-29 | 成都卓程科技有限公司 | Automatic control system based on liquid level of single water tank |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2677984B2 (en) * | 1982-08-31 | 1997-11-17 | 神鋼電機株式会社 | Water level control method for waterway system |
| JP2839731B2 (en) * | 1991-03-06 | 1998-12-16 | 株式会社東芝 | Control method of hydroelectric power plant with discharge valve |
| CN2777677Y (en) * | 2005-01-26 | 2006-05-03 | 武汉大学 | Water tank for teaching experiment |
| CN100514239C (en) * | 2005-06-30 | 2009-07-15 | 上海柴油机股份有限公司 | Liquid level water level automatic control system |
| CN100416254C (en) * | 2005-09-27 | 2008-09-03 | 河海大学 | Experimental apparatus for pressure regulating chamber teaching |
| CN102288384B (en) * | 2011-07-28 | 2012-11-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Large-scale unsteady flow decompression box |
| CN203629870U (en) * | 2013-12-20 | 2014-06-04 | 武汉大学 | Surge-chamber resistance coefficient measurement system used for model debugging |
| CN204374792U (en) * | 2014-12-15 | 2015-06-03 | 武汉大学 | A kind of water level control apparatus of sealing type cistern |
| CN104458316B (en) * | 2014-12-31 | 2017-02-22 | 武汉大学 | Overall physical model test platform for transient process of hydropower station |
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2014
- 2014-12-15 CN CN201410770267.9A patent/CN104503492B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266192A (en) * | 2008-04-18 | 2008-09-17 | 浙江大学 | Liquid level variable constant pressure water supply system |
| CN103049009A (en) * | 2012-03-31 | 2013-04-17 | 邵阳学院 | Continuous water level control system based on singlechip |
| CN202956673U (en) * | 2012-11-14 | 2013-05-29 | 成都卓程科技有限公司 | Automatic control system based on liquid level of single water tank |
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| CN104503492A (en) | 2015-04-08 |
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