CN204000743U - A kind of experimental facilities of simulating water temperature laminar flow - Google Patents
A kind of experimental facilities of simulating water temperature laminar flow Download PDFInfo
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- CN204000743U CN204000743U CN201420216321.0U CN201420216321U CN204000743U CN 204000743 U CN204000743 U CN 204000743U CN 201420216321 U CN201420216321 U CN 201420216321U CN 204000743 U CN204000743 U CN 204000743U
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Abstract
The utility model relates to a kind of experimental facilities of simulating water temperature laminar flow, comprising: circulation reservoir, is connected drainage area with contributing region, the thermal treatment zone, test section, drainage area; Contributing region arranges water supply frontal pool; In water supply frontal pool, be provided with current driver; The thermal treatment zone is provided with electrical heating case, and experiment pond is set in test section, uniform a plurality of cooling-water temperature sensors in experiment pond; Drainage area is provided with Stoplog gate overflow weir and sluicing pond, and sluicing pond connects the many tapping pipes with drain valve.Water level and flow field in the height of the utility model utilization water inlet overflow weir and drain valve regulation and control experiment pond, the three-dimensional temperature field of testing water body in pond by quantity regulating and the control of opening and closing electrically heated rod.Compared with prior art, the utility model can be real-time adjusting thermal field and flow field and dynamic simulation experiment, overcome prior art and cannot simulate for a long time the stable stratification temperature field in Dynamic Flow Field, can directly carry out the mobile simulated experiment of water temperature delamination under limit.
Description
Technical field
The utility model relates to a kind of experimental facilities of simulating water temperature laminar flow, is a kind of environmental and ecological hydraulic test device, is a kind of device for simulated experiment that flow from the superficial to the deep of reservoir, deep water river and water temperature are changed.
Background technology
Engineering practice shows, reservoir depth of water direction before dam that modulability is good all presents water temperature delamination in various degree, reservoir needs for guaranteeing generating and industrial or agricultural diversion simultaneously, water inlet has all required certain depth of immersion, in reservoir high water level operation in summer and the obvious situation of water temperature delamination, the natural river course water temperature that the lower temperature that sluices is built before dam obviously reduces, thereby bring a series of water at low temperature impacts, as the impact on river valley microclimate, impact on downstream river course aquatic ecological, on impact of agricultural irrigation etc.The particularly impact on aquatic ecological, low-temperature discharge may have a strong impact on aquatile as the laying eggs and growth of fish, reptiles, amphibian animal, even causes the disappearance of species.Therefore, the layering of research water temperature of reservoir changes and lower sluicing temperature, and correlation is stratified pumping and the important subject of preserving the ecological environment between the two.
Adopting water temperature delamination physical model experiment method, is extensive use and the highly effective technological means of research stratified pumping problem.Existing water temperature delamination flow simulating method be in experiment pond gently layering inject the water of different temperatures, due to the difference of density, cold water dive hot water floating, finally forms water temperature delamination condition, then opens water fetching device, forms water temperature delamination and flows.For example: Chinese patent < < method for layering simulation for water temperature of reservoir > > (notification number: CN101775787, day for announcing 2010.7.14), first by heating system, the water body in different heating pond is heated respectively, then utilize this device by the disposable injection model reservoir of the water body of different temperatures, water body in standing model reservoir, finally forms multilayer water temperature of reservoir.Although said method can form water temperature vertical line in the early stage, distribute, yet Once you begin water intaking forms flow regime in reservoir, water temperature vertical line distributes and will change again, and in storehouse, water body reduces gradually simultaneously.In simulation process, water temperature-flow field cannot reach stable state, duration is also comparatively of short duration, therefore still cannot simulate in large-scale water temperature stratified type reservoir, the laminar flow process that water inlet water intaking causes, cannot simulate the stable stratification temperature field in Dynamic Flow Field for a long time.
Utility model content
In order to overcome the problem of prior art, the utility model proposes a kind of experimental facilities of simulating water temperature laminar flow.Described device is by leveled heating and water conditions in soil layers, can realize more accurately reservoir stratified pumping simulation, can simulate for a long time the change procedure of the distribution of water temperature in Dynamic Flow Field, obtain accurately the dynamic change experimental data of lower sluicing temperature, instruct better engineering practice.
The purpose of this utility model is achieved in that a kind of experimental facilities of simulating water temperature laminar flow, comprise: circulation reservoir, described circulation reservoir is provided with at least one with the suction pump of feed pipe and water intaking valve, described feed pipe is connected with contributing region, the thermal treatment zone, test section, drainage area successively, and described drainage area is connected with circulation reservoir; Described contributing region is provided with the water supply frontal pool of the water supply overflow weir of controlling water level; In described water supply frontal pool, be provided with at least one with the current driver of sparge pipe, deflector and trash rack; The described thermal treatment zone is provided with at least one with layering dividing plate and is distributed in the electrical heating case of a plurality of heating rods between layering dividing plate, and described heating rod and heating cabinet switch board electrically connect; Experiment pond is set, uniform a plurality of cooling-water temperature sensors in described experiment pond in described test section; Described drainage area is provided with Stoplog gate overflow weir and sluicing pond, described sluicing pond connects the many tapping pipes with drain valve, each tapping pipe arranges respectively electromagnetic flowmeter and cooling-water temperature sensor, and described cooling-water temperature sensor and electromagnetic flowmeter are electrically connected to processor with water temperature data acquisition.
Further, described electrical heating case exit arranges splay enlarging deflector.
Further in described forebay, three current quantizers are set, three described current quantizers are connected with electrical heating case separately respectively, and three electrical heating casees arrange respectively enlarging deflector separately.
Further, the cooling-water temperature sensor in described test section is rod-type multiple spot cooling-water temperature sensor, and the cooling-water temperature sensor in described tapping pipe is single-point type cooling-water temperature sensor.
The beneficial effect that the utility model produces is: the current driver that device described in the utility model adopts, in fill phase, upper water levelling is advanced into heating cabinet quietly, bottom current enter experiment pond by cold water channel, by the layering dividing plate in electrical heating case, current are divided into comparatively clear and definite level, in electrical heating case by the electrically heated rod between layering dividing plate, each layer of current are heated respectively, form the stream that of different temperatures, mobile thermal field during Reality simulation flash.Method described in the utility model is utilized the height of water inlet overflow weir and water level and the flow field in water intaking valve regulation and control experiment pond, the three-dimensional temperature field of testing water body in pond by quantity regulating and the control of opening and closing electrically heated rod in experiment.Compared with prior art, device described in the utility model can stable stratification temperature field and the velocity field of synchronization gain, overcome prior art and cannot simulate for a long time the stable stratification temperature field in Dynamic Flow Field, can directly carry out the mobile simulated experiment of water temperature delamination under limit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the structural representation of device described in embodiment mono-of the present utility model;
Fig. 2 is the structural representation of device described in embodiment mono-of the present utility model, be in Fig. 1 A-A to sectional view;
Fig. 3 is three current quantizers being arranged side by side described in embodiment tri-of the present utility model and the structural representation of three electrical heating casees.
The specific embodiment
Embodiment mono-:
The present embodiment is a kind of experimental facilities of simulating water temperature laminar flow, as shown in Figure 1, 2.The present embodiment comprises: circulation reservoir 1, described circulation reservoir is provided with at least one with the suction pump 2 of feed pipe and water intaking valve 15, described feed pipe is connected with contributing region I, thermal treatment zone II, test section III, drainage area IV (each dotted line frame in Fig. 1) successively, and described drainage area is connected with circulation reservoir; Described contributing region is provided with the water supply frontal pool 14 of the water supply overflow weir 1401 of controlling water level; In described water supply frontal pool, be provided with at least one with the current driver 13 of sparge pipe 1301, deflector 1302 and trash rack 1303; The described thermal treatment zone is provided with at least one with layering dividing plate 302 and is distributed in the electrical heating case 3 of a plurality of heating rods 301 between layering dividing plate, and described heating rod and heating cabinet switch board 12 electrically connect; Experiment pond 4 is set, uniform a plurality of cooling-water temperature sensors 5 in described experiment pond in described test section; Described drainage area is provided with Stoplog gate overflow weir 6 and sluicing pond 7, described sluicing pond connects the many tapping pipes 10 with drain valve 1001, each tapping pipe arranges respectively electromagnetic flowmeter 9 and cooling-water temperature sensor 8, and described cooling-water temperature sensor and electromagnetic flowmeter are electrically connected to processor 11 with water temperature data acquisition.
The object of the regional that the present embodiment is set is by contributing region and the thermal treatment zone, can be so that current change water temperature delamination flow regime into gradually by water temperature homogeneous flow in test section, water temperature compared with high water body because density is compared with little and floating gradually, water temperature compared with low water body because density is compared with declining greatly and gradually.In simulation process, can also, according to experiment needs, water temperature vertical line be distributed and dynamically be adjusted, to form metastable water temperature-Flow Field Distribution state.
For carrying out the experiment of water temperature-Flow Field Distribution, the device described in the present embodiment is totally broadly divided into water level-flow field control system and heating-water temperature detection system two parts.
The water level of feed cistern is to be controlled by the water supply overflow weir of feed water valve and water supply frontal pool, and the water level in sluicing pond is to be controlled by drain valve.Water supply overflow weir and drain valve can be adjusted, and experiment water level in water pool is controlled on certain altitude.Water supply overflow weir can simply be used the wooden or plastic dam of happening frequently, baffle plate of every increase, and the height of water level just increases.Also can use the overlapping flexible metal shelves of Electric Machine Control, control automatically the height of water level.
Stoplog gate overflow weir can be used dividing pier to coordinate the form of wooden or plastic dam, or dividing pier is equipped with the schemes such as overlapping flexible metal plate washer.Due to, experiment pond end is wider, and Stoplog gate overflow weir is used dividing pier segmentation fixed dam.On the width of experiment pond, several dividing pier (see figure 1)s are set, on dividing pier, have gate slot, when needs increase water intaking height, can in gate slot, add door-plate (baffle plate of certain altitude), the stack of polylith door-plate, the height of increase overflow weir, otherwise take out door-plate, reduce the height of overflow weir.
The effect of the current driver that flow field, contributing region consists of sparge pipe, deflector, trash rack forms.
Sparge pipe described in the present embodiment can be designed as vertical standing in water, and a plurality of weep holes are stamped in the bottom sealing of feed pipe on the cylindrical of vertical tube, and the current in outlet pipe are entered in water supply frontal pool from top to bottom, and weep hole evenly goes out stream.
For guaranteeing that top current flow to the thermal treatment zone from water supply frontal pool, and can not reflux, the present embodiment has adopted deflector.Deflector is trapped among sparge pipe in a region of water supply frontal pool, because sparge pipe is in going along with sb. to guard him district, go along with sb. to guard him hydraulic pressure in district higher than the non-district of going along with sb. to guard him, so current can only flow to the non-district of going along with sb. to guard him from going along with sb. to guard him district, this has just formed one-way flow, as long as will go along with sb. to guard him district, open a mouth, be connected with heating cabinet, go along with sb. to guard him district and just can utilize hydraulic pressure, form one-way flow, the current of heating can not refluxed, enter experiment pond.
The thickness that water temperature delamination changes in simulation water body is less, when in inhalant region, only demand motive top water body enters the thermal treatment zone, the passage of certain altitude can be left in deflector bottom, can be used for being communicated with guide plate both sides water body, and assure feed water overflow weir can be controlled and go along with sb. to guard him district and downstream tests water level in water pool.When in simulation water body, water temperature delamination thickness is larger, need the whole water body that drives to enter the thermal treatment zone, deflector lower position has approached bottom, forebay, now can on deflector, evenly lay some water holes, deflector both sides water body is still interconnected, the control of assure feed water overflow weir to experiment water level, it is stable that process of the test middle water level can keep.
When making current flow out water supply frontal pool, current are more steady, can set up guiding device in the exit of forebay, such as grid, orifice plate or water conservancy diversion tube bank etc.What the present embodiment adopted is grid, and described grid is comprised of many vertical stripe board in water, and the plate face of stripe board is vertical with water (flow) direction, and current are flowed steadily in depth of water direction.
The heating of water temperature is mainly completed by heating cabinet.The heating cabinet of stratified pumping is connected with forebay by trash rack, guarantees to become a mandarin evenly in heating cabinet.Electrically heated rod is installed in heating cabinet, and controls the startup of each layer of heating rod and close by a switchboard, for changing heating power.Heating cabinet distance from bottom has certain altitude at the bottom of pond, guarantees that the warm water after the heating of top advances downstream with certain velocity of approach, makes to test distribution of water temperature in pond and changes gradually.Heating cabinet downstream is connected with experiment pond by diffuser.
For the water temperature of simulation in reservoir be by the water surface to the water-bed feature of reduction gradually, it is more that the heating rod in the heating cabinet described in the present embodiment is distributed as between upper strata layering dividing plate heating rod, along with the reduction of layering, the quantity of heating rod is successively decreased gradually.For making water body (vertical with water (flow) direction) homogeneous heating in the horizontal, the major axis of heating rod is vertical with water (flow) direction, horizontal in water (flow) direction, and the current that pass through just can be contacted with the territory, effective heating area of heating rod fully, forms good heat transfer effect.
Electrical heating case should be set up diffusion region with the position that experiment pond is connected, and the water body after heating can enter test section uniformly.Diffusion region can be used two to be arranged on electrical heating case exit deflector.Two deflectors are splayed setting, and making current flow out electrical heating case is can sharply not spread, but progressively diffusion under the effect of deflector has avoided electrical heating case to export issuable backflow, destroys the layering water temperature diffusion process of water body.
Electrical heating case and current driver can modularized designs.At some, comparatively in the hierarchical simulation of large reservoir, can use a plurality of electrical heating casees and current driver, in order to simulate broad reservoir water body.Two, three, even more current drivers and electrical heating case link together, and are arranged side by side, and produce comparatively broad layering water flow field.
Water temperature detection mainly contains: be arranged on the cooling-water temperature sensor of experiment in pond, be arranged on the compositions such as cooling-water temperature sensor in tapping pipe and water temperature data acquisition and processor.Relatively long in experiment pond, make the fully diffusion in the plane of upstream warm water.The cooling-water temperature sensor being arranged in experiment pond can be used water temperature vertical line distribution sensor, this cooling-water temperature sensor can be monitored by the water surface and be changed to the water temperature of the vertical degree of depth under water, in experiment pond, arrange in length and breadth water temperature vertical line distribution sensor, can obtain the three-dimensional distribution of water temperature in whole pond.Owing to there being many tapping pipes, in each tapping pipe, single-point temperature pick up to be installed, with this, monitor sluicing temperature, the water temperature while being equivalent to analog monitoring flash in downstream river course changes.
The end in experiment pond is Stoplog gate overflow weir, can get the water of different water temperature layers by changing the height of overflow weir, electromagnetic flowmeter and drain valve is also installed, to control discharge on tapping pipe.Tapping pipe should keep level, is convenient to install electromagnetic flowmeter.Tapping pipe outlet connects catchment tray, and the current in drain tank enter underground circulation reservoir.
Circulation reservoir is mainly comprised of charge for remittance mouth, groundwater reservoir, suction pump, feed pipe etc.Near the water supply overflow weir of water supply frontal pool both sides and tapping pipe outlet, be equipped with charge for remittance mouth, be used for collecting the water of abandoning from experimental facilities, the water flowing out from water supply overflow weir flows to by charge for remittance mouth and enters groundwater reservoir, and the current that flow out from tapping pipe equally also enter groundwater reservoir by charge for remittance mouth.Groundwater reservoir can be one at the strip tank of below ground, the length of the length of tank and contributing region above, the thermal treatment zone, test section, drainage area is similar.The volume of circulation reservoir is larger, is convenient to water body cooling.Groundwater reservoir, near the position of water supply frontal pool, is provided with suction pump, for experimental facilities supplies water.Tapping pipe is in one end of groundwater reservoir, and suction pump is at the other end of groundwater reservoir, after the water body in the higher water body blending groundwater reservoir of temperature that tapping pipe flows out, water temperature declines rapidly, because suction pump is away from tapping pipe, its water body water temperature around can reach lower requirement.
Embodiment bis-:
The present embodiment is the improvement of embodiment mono-, is that embodiment mono-is about the refinement of test section.Electrical heating case exit described in the present embodiment arranges splay enlarging deflector.
The formed diffusion region of enlarging deflector makes current form uniform diffusion type when flowing out electrical heating case, forms broad water flow field.When having a plurality of electrical heating case, between the electrical heating case that enlarging deflector can make to be arranged side by side, do not produce backflow vortex, form smoothly layering flow field stably.The length of deflector diffusion region is generally not less than the twice of experiment pool width.
Simulated experiment example:
For simulating in certain water temperature stratified type reservoir, under water inlet water intaking condition, the variation of reservoir area distribution of water temperature and water intaking water temperature.First according to water temperature delamination situation, by water temperature temperature difference distribution curve, the depth of water is generalized as 8 layers, and the heat flux by above-mentioned each layer under the maximum diversion flow condition of calculation stability, draws corresponding heating power.Can make thus layering electrical heating case, wherein have from top to bottom 8 layers of heating rod, the installation power of 1 ~ 8 layer of heating rod is in Table 1.
each layer of electrically heated rod peak power of table 1
| Zone of heating numbering | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Electrical power (kw) | 11.5 | 11.5 | 11.5 | 9.5 | 9.5 | 7.5 | 5.5 | 3.5 |
Then according to the depth of water of this reservoir and intake width, determine the degree of depth and the width of experiment pond and water supply frontal pool, if the reservoir depth of water is 120m, according to 1:100 ratio, dwindle, test pond, pond and deeply should be not less than 1.2m; Reservoir water inlet, dwindles according to 1:100 ratio greatly about 600m the influence basin in water temperature-flow field, reservoir area, and the length in experiment pond should be not less than 6m.The long 8m in experiment pond during specific experiment, the wide 2.5m in pond, the dark 1.5m in pond, the pond length of water supply frontal pool is 1.8m, pond is wide is 2.5m, the dark 1.5m in pond, overflow weir maximum functional water level 1.2m.
It is definite that the length of electrical heating case is installed maximum quantity according to top layer heating rod, and if single U-shaped heating rod width is 10cm, spacing is also got 10cm, and top layer need to be installed 7, and the length of electrical heating case should be not less than (10+10) * 7=140cm.
Embodiment tri-:
The present embodiment is the improvement of embodiment bis-, is that embodiment bis-is about the refinement of current driver and electrical heating case, as shown in Figure 3.Three current quantizers are set in the forebay described in the present embodiment, and three described current quantizers are connected with electrical heating case separately respectively, and three electrical heating casees arrange respectively enlarging deflector separately.
Three current quantizers, in a water supply frontal pool, have three sparge pipes to supply water.Three sparge pipes can be used a suction pump to supply water, and also can use respectively three suction pumps.The end of the enlarging deflector that the outlet of three electrical heating casees goes out to arrange is linked in sequence, and makes three bursts of smooth-going pooling together of the current that flow out from electrical heating case, maintains the fluidised form of layering.
Simulated experiment example:
The experiment of certain large hydropower station stratified pumping adopts guide 1:120 normal model, the wide B=10m of water supply frontal pool, the long L=3m(in pond according to water (flow) direction and definite wide and grow).As shown in Figure 3, because simulation reservoir area is wider, adopt the single thermal treatment zone to be difficult to realize the water temperature stability distribution of whole reservoir area, therefore adopt three current quantizers and three cover electrical heating casees, the form in experiment pond and sluicing pond is identical with the experimental facilities of single current quantizer, single electrical heating case.In experimentation, according to distribution of water temperature situation, complete dynamic adjustment, and in heating final formation re-set target distribution after 3.5 hours.
Embodiment tetra-:
The present embodiment is the improvement of above-described embodiment, is that above-described embodiment is about the refinement of cooling-water temperature sensor.Cooling-water temperature sensor in test section described in the present embodiment is rod-type multiple spot cooling-water temperature sensor, and the cooling-water temperature sensor in described tapping pipe is single-point type cooling-water temperature sensor.
Rod-type multiple spot cooling-water temperature sensor can be measured the water temperature of different water depth simultaneously.In experiment pond, according to a plurality of rod-type multiple spot of spread configuration in length and breadth cooling-water temperature sensor of horizontal plane, water temperature vertical line distribution situation that can monitoring experiment pond difference, forms the three-dimensional water temperature field in experiment pond.In arranging in length and breadth on horizontal plane, the rod-type multiple spot cooling-water temperature sensor of horizontally-arranged row (vertical with water (flow) direction) is uniformly, but extended spread (consistent with water (flow) direction) is according to water (flow) direction, and upstream is comparatively sparse, and downstream is slightly intensive.
Embodiment five:
The present embodiment is the experimental technique of the simulation water temperature laminar flow of device described in a kind of embodiment of use mono-.Described method mainly comprises how forming initial flow-field and thermal field, and how to adjust thermal field and flow field.
Described in the present embodiment, the concrete steps of method are as follows:
Form the step in incipient stability flow field: for passing through to adjust the flow of water intaking valve, adjust the height of water supply overflow weir and control the water level in water supply frontal pool, utilize sparge pipe to form by the water surface to the uniform flow field of water-bed flow velocity, utilize deflector to prevent that current are from the anti-water supply frontal pool that flows back in experiment pond, utilize trash rack and layering dividing plate to make the laminar flow of waterflow stabilization, by adjusting the height of Stoplog gate overflow weir, control water intaking elevation, the data on flows measuring according to Electromagnetic Flow is adjusted drain valve and is controlled water flow in sluicing pond, form incipient stability flow field, the current that flow out from water supply overflow weir and tapping pipe enter cooling circulation reservoir after, by suction pump, extract and enter sparge pipe, recycling is used.
When experiment starts, forming stable flow field is the prerequisite of carrying out water temperature delamination experiment.The present embodiment utilizes the device described in embodiment mono-to test, first, by suction pump, water intaking valve, sparge pipe, by the water suction water supply frontal pool in circulation reservoir, in water supply frontal pool, there is water supply overflow weir, by adjusting the height of water supply overflow weir, can regulate the water level in water supply frontal pool.Water supply overflow weir is used the baffle plate adjustment height of stack, can simply increase or reduce the quantity of stack baffle plate.The current that spray by sparge pipe water outlet uniformly from top to bottom.There is deflector sparge pipe both sides, and sparge pipe is gone along with sb. to guard him therein, can make the current in water supply frontal pool keep bottom horizontal flow sheet direction, promote current and enter the thermal treatment zone, downstream, prevent that hot water from flowing backwards.The bottom of water supply frontal pool is cold water area, does not establish deflector, and velocity of approach is relatively little, so that the substrate water temperature keeing relative stability.Therefore, the water level in test section, experiment pond is by contributing region feed water valve, water supply overflow weir and downstream drain valve co-controlling.In experiment, first according to discharge q, from upstream feed pipe water supply start Q, Q is slightly larger than q, then adjusts the height of overflow weir, and unnecessary water body is released, and to control experimentation middle water level, remains unchanged.
Current, when flowing out water supply frontal pool, by trash rack, form from the water surface to water-bed steady flow structure current, then enter layering dividing plate.Layering dividing plate is the important element that current form layering.Due to the effect of sparge pipe, in trash rack and layering dividing plate, current have certain proal kinetic energy, and therefore, current form layering current stably under the acting in conjunction of trash rack and layering dividing plate, enter experiment pond.Current in experiment pond are also keeping certain kinetic energy, therefore can substantially maintain the streamflow regime of layering.Water level in experiment pond is to be formed by feed water valve, water supply overflow weir and drain valve co-controlling.Stoplog gate overflow weir is used the spout hole of the neutral gear simulation reservoir dam between dividing pier, and it blocks water height and determines by testing desired height of water level.If the height of Stoplog gate overflow weir is determined by the height of baffle plate superposeing, can use the baffle plate of some, form certain water intaking height, if need to reduce water intaking height, reduce the quantity of baffle plate.
Form the step of incipient stability water temperature delamination thermal field: for opening the heating rod between layering dividing plate by heating cabinet switch board, heating water body, by the three-dimensional temperature field of water body in the cooling-water temperature sensor collecting test district in test section, according to three-dimensional temperature field data, by heating cabinet switch board, adjust heating rod and open or close, make three-dimensional temperature field reach the initial requirement of experiment.
Forming under the prerequisite in incipient stability flow field, carrying out necessary water body heating, is to form the necessary step of the needed steady temperature field of experiment.Under common experiment condition, due to the limited space of experiment, can not form the huge water body as true reservoir, and the relatively little water body of employing, it is consistent substantially that the water temperature vertical line of its water body each several part distributes, and for this reason, must carry out leveled heating.The process of heating can first take the circumstances into consideration to open the heating rod of some, then by the resulting water temperature parameter of cooling-water temperature sensor in observation experiment pond, regulates flow velocity, flow and the unlatching of each layer of current or closes heating rod, forms initial water temperature field.
Monitor the step of initial sluicing thermal field: for by being arranged on the cooling-water temperature sensor of tapping pipe, monitor sluicing thermal field.Water temperature for monitoring and simulation reservoir dam downstream, is provided with single-point cooling-water temperature sensor in tapping pipe, owing to there being a plurality of tapping pipes, single-point cooling-water temperature sensor is all installed in each tapping pipe.
Should be noted that the reservoir described in the present embodiment is the true reservoir that simulated experiment, is different concept from " circulation reservoir " in the present embodiment.
The step of testing: for passing through to adjust water intaking valve, the height of water supply overflow weir, the height of Stoplog gate overflow weir, drain valve, change water level and the discharge in water supply frontal pool, experiment pond and sluicing pond, the line item of going forward side by side, form the experiment condition in different water levels and flow field, by heating cabinet switch board, change unlatching or the closed condition of the heating rod between each layering dividing plate simultaneously, the three-dimensional temperature field and the sluicing temperature that form water body in different test sections, record and analyze various flow fields and thermal field.
Water temperature delamination experiment is to consist of various conditions, therefore, needs different flow field and heating condition.The present embodiment is by changing the water level of water supply frontal pool and the height of Stoplog gate overflow weir, and the flow of sparge pipe and tapping pipe, can realize various stable layering flow fields, simultaneously, by the unlatching of varying number heating rod, can be highly effective the variations in temperature of water body in control experiment pond, under in real time mobile state, layering water temperature in the Reality simulation reservoir that can be really true to life, realizes the water intaking simulated experiment under various stratified condition.
Finally it should be noted that, below only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred arrangement scheme, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model (such as the connected mode of installing, each annexation etc.), and not depart from the spirit and scope of technical solutions of the utility model.
Claims (4)
1. an experimental facilities of simulating water temperature laminar flow, comprise: circulation reservoir, described circulation reservoir is provided with at least one with the suction pump of feed pipe and water intaking valve, it is characterized in that, described feed pipe is connected with contributing region, the thermal treatment zone, test section, drainage area successively, and described drainage area is connected with circulation reservoir; Described contributing region is provided with the water supply frontal pool of the water supply overflow weir of controlling water level; In described water supply frontal pool, be provided with at least one with the current driver of sparge pipe, deflector and trash rack; The described thermal treatment zone is provided with at least one with layering dividing plate and is distributed in the electrical heating case of a plurality of heating rods between layering dividing plate, and described heating rod and heating cabinet switch board electrically connect; Experiment pond is set, uniform a plurality of cooling-water temperature sensors in described experiment pond in described test section; Described drainage area is provided with Stoplog gate overflow weir and sluicing pond, described sluicing pond connects the many tapping pipes with drain valve, each tapping pipe arranges respectively electromagnetic flowmeter and cooling-water temperature sensor, and described cooling-water temperature sensor and electromagnetic flowmeter are electrically connected to processor with water temperature data acquisition.
2. device according to claim 1, is characterized in that, described electrical heating case exit arranges splay enlarging deflector.
3. device according to claim 2, is characterized in that, three current quantizers are set in described water supply frontal pool, and three described current quantizers are connected with electrical heating case separately respectively, and three electrical heating casees arrange respectively enlarging deflector separately.
4. according to the device one of claim 1-2 Suo Shu, it is characterized in that, the cooling-water temperature sensor in described test section is rod-type multiple spot cooling-water temperature sensor, and the cooling-water temperature sensor in described tapping pipe is single-point type cooling-water temperature sensor.
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| CN105714731A (en) * | 2016-04-25 | 2016-06-29 | 中国水利水电科学研究院 | Experimental device and method for testing discharged water temperature of reservoir |
| CN106836111A (en) * | 2017-02-28 | 2017-06-13 | 天津大学 | A kind of laboratory reservoir stratification heating apparatus |
| CN107354908A (en) * | 2017-06-29 | 2017-11-17 | 河海大学 | River model stoplog type gate water tank |
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2014
- 2014-04-30 CN CN201420216321.0U patent/CN204000743U/en not_active Withdrawn - After Issue
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| CN106836111A (en) * | 2017-02-28 | 2017-06-13 | 天津大学 | A kind of laboratory reservoir stratification heating apparatus |
| CN107354908A (en) * | 2017-06-29 | 2017-11-17 | 河海大学 | River model stoplog type gate water tank |
| CN108547250A (en) * | 2018-03-02 | 2018-09-18 | 中国水利水电科学研究院 | Simulation power station Stoplog gate stratified pumping, which is got rid of, increases load test system and method |
| CN108547250B (en) * | 2018-03-02 | 2023-07-25 | 中国水利水电科学研究院 | Layered water taking, load throwing and increasing experiment system and method for simulating stoplog door of hydropower station |
| CN108507758A (en) * | 2018-05-04 | 2018-09-07 | 山东省科学院海洋仪器仪表研究所 | A kind of marine riser cylinder flow-disturbing experimental provision |
| CN109523872A (en) * | 2018-05-31 | 2019-03-26 | 华北电力大学 | Multi-functional fluid delamination Teaching demonstrating jack horse |
| CN109506891A (en) * | 2019-01-14 | 2019-03-22 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of sink and its test technology process for simulating fresh and salt water mixing |
| CN109506891B (en) * | 2019-01-14 | 2021-03-26 | 水利部交通运输部国家能源局南京水利科学研究院 | Water tank for simulating mixing of salt and fresh water and test process flow thereof |
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