CN203178225U - Physical modeling experiment system for hydro-thermal coupling sand launder in porous medium water-bearing stratum - Google Patents

Physical modeling experiment system for hydro-thermal coupling sand launder in porous medium water-bearing stratum Download PDF

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Publication number
CN203178225U
CN203178225U CN 201320092133 CN201320092133U CN203178225U CN 203178225 U CN203178225 U CN 203178225U CN 201320092133 CN201320092133 CN 201320092133 CN 201320092133 U CN201320092133 U CN 201320092133U CN 203178225 U CN203178225 U CN 203178225U
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China
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water
temperature
sand launder
porous medium
thermal coupling
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CN 201320092133
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Chinese (zh)
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刘国庆
周志芳
吴蓉
王锦国
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Hohai University HHU
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Hohai University HHU
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Abstract

The utility model relates to a physical modeling experiment system for a hydro-thermal coupling sand launder in a porous medium water-bearing stratum. The physical modeling experiment system comprises a sand launder body structure, a water level adjusting circulating device, an automatic temperature collecting device, a constant-temperature and constant-flow water pouring device, a temperature sensor, a self-priming pump, an overflowing bucket and other structures, wherein the temperature sensor is arranged through a glass rotameter, a single-chip microcomputer and a wire basket joint. The physical modeling experiment system for the hydro-thermal coupling sand launder realizes the measurement for basic physical parameters for testing, precisely automatic collection of test data, automatic work of an experiment system, and adjustment of the experimental conditions, has the advantages of being simple in design and simple and convenient to operate, and meets the requirement on hydro-thermal coupling indoor physical simulation and the like under a plurality of conditions.

Description

Porous medium aquifer water-thermal coupling sand launder physical experiments system
Technical field
The utility model relates to conduct heat test model system, particularly porous medium aquifer water-thermal coupling sand launder physical experiments system with the energy storage problem of groundwater flow and heat coupling in the porous medium.
Background technology
The water-bearing zone genus polyporus medium of simulating in the sand launder, underground water is composed as fluid and is existed in the hole of water-bearing zone, and flow within it, the heat migration is water-Re-three coupled problems of pressure of a complexity in the water-bearing media, need consider the size of current, heat and water-bearing zone overlying burden simultaneously.Under the uniform pressure condition, when underground water took place to flow, the heat migration in the underground water realized by convection current (forced convection) and heat power dispersion that mainly the heat power disperse comprises heat conduction and hot mechanical dispersion two parts.Groundwater Flow or static, flow velocity speed, water-bearing media nature difference in the water-bearing media, take out-pour water factor such as the temperature difference and all can have influence to groundwater flow in the water-bearing media-heat simultaneous transport.In addition, the heat migration form of water-bearing media inside also comprises the processes such as heat conduction between natural convection, water and water-bearing media skeleton, though these effects are comparatively faint, less to the influence of heat migration, natural convection often can not be ignored again the influence of temperature field result of calculation under different thermal source conditions.In the migration of porous medium heat and energy storage research, the data of research derive from actual engineering mostly, yet because field geology complicated condition, the test operation difficulty is big, the existence of problems such as the difficult monitoring of data, and the data that a large amount of theoretical researches need are difficult to obtain, data continuity is poor, cause theoretical research to lag behind engineering and use, with respect to foreign study, China utilizes indoor physical model more inadequate to the research of hydro-thermal coupling mechanism.Therefore, candidate physics and chemistry similar indoor sand launder physical model and carry out the water level that needs in the process around test simulation and regulate particularly important that the exploitation of a whole set of pilot systems such as circulating device, constant temperature constant water filling device, automatic data collection device shows comprehensively how.
The utility model content
The purpose of this utility model is:
The purpose of this utility model is the deficiency that exists at aquifer water-thermal coupling indoor theory experimental study, provide a nested structure simple, easy to operate, test function is many, is used for aquifer water thermal coupling change of temperature field rule under the multiple condition of research and to multifunction test systems such as the accurate mensuration of a series of hydro-thermal parameters in water-bearing zone and inverting, analytic solution checking, numerical simulations.
The utility model is achieved by the following technical solution:
A kind of porous medium aquifer water-thermal coupling sand launder physical experiments system, described model test system comprises the sand launder case, water level is regulated circulating device, temperature automatic acquisition device and constant temperature constant flow water filling device;
Described sand launder case comprises some experiment wells, porous medium, the pressure measurement flexible pipe, glass rotameter, heating arrangement, sand launder case ectosome and porous medium, described sand launder case ectosome bottom is provided with pressure measurement flexible pipe and the glass rotameter that the number experiment well equates, described glass rotameter is communicated with by pressure measurement flexible pipe and experiment well bottom, and described some experiment wells wherein are equipped with heating arrangement in a bite arbitrarily;
Described water level is regulated circulating device and is comprised device urceolus and self-priming pump, and described device urceolus and sand launder case ectosome are communicated with by the hyposmosis material;
Described temperature automatic acquisition device comprises temperature element and temperature automatic collector, and described temperature element is arranged in the porous medium of described sand launder case, and the other end is connected with the temperature automatic collector;
Described constant temperature constant flow water filling device comprises self-priming pump, the water filling bucket, and heating arrangement and spinner-type flowmeter, described self-priming pump is connected with described experiment well by spinner-type flowmeter, and described heating arrangement is arranged in the water filling bucket, and the described self-priming pump other end is connected with steel drum.
As further innovation of the present utility model, described porous medium bottom is equipped with heat-barrier material, and top successively is equipped with heat-barrier material, water proof medium and add coping.
As further innovation of the present utility model, be provided with threeway and three-way cock between the self-priming pump of described constant temperature constant flow water filling device and the glass rotameter, described three-way cock and self-priming pump interconnect by threeway, an other end of threeway feeds in the water filling bucket by conduit, the other end of three-way cock is connected with glass rotameter, be provided with temperature element in described water filling bucket and the experiment well, heating arrangement in described self-priming pump, temperature element and the water filling bucket all is connected on the single-chip microcomputer, is provided with stirring machine in the described water filling bucket.By as above installing, water temperature is remained in the thermostatic control system range of set temperature, when temperature is lower than the setting minimum temperature, automatically heating, when temperature is higher than the setting maximum temperature, start the water pump cooling of drawing water, make the water in water filling bucket and the experiment well keep a stationary temperature, simultaneously by glass rotameter can be real-time the flow that monitors water, convenience and robotization that pilot system is used have further been increased, test figure is more accurately (0.1-1L/h) also, stability is strong, and the cost cost is also low, the cost price of whole constant temperature constant system be on the market existing peristaltic pump price about 1/4, this complete equipment not only can be used for the laboratory, also can carry out the experiment in open-air place simultaneously.
As further innovation of the present utility model, described constant temperature constant flow water filling device is provided with the bucket that supplies water, described water filling bucket and the bucket that supplies water are by being connected level communicating pipe, in the water supply bucket discharger is installed, described constant temperature constant flow water filling device is provided with back pool, described back pool is connected with a self-priming pump by flexible pipe, and described self-priming pump is connected with the bucket that supplies water by flexible pipe, and the described discharger other end is connected with water collecting basin.Realize that by installing the bucket that supplies water additional the constant of water adds, guarantee the water yield constant of water filling bucket, prevented the waste of water simultaneously again.
As further innovation of the present utility model, be provided with water tank in the urceolus of described water level adjusting circulating device, the spilling water cylindrical drum, rotary screw, cross water tube hose, water supply hose and pressure measurement flexible pipe, the upper end opening part of described water tank is equipped with a sheet metal with threaded hole, described rotary screw is installed in the threaded hole of sheet metal, the spilling water cylindrical drum is fixed in the lower end of rotary screw, bottom at water tank is provided with catch basin, described spilling water cylindrical drum is communicated with catch basin, described self-priming pump one end is connected for one section with the mistake water tube hose, the other end is connected with catch basin, the described water tube hose other end of crossing is arranged on the tank outer wall upper end, and described pressure measurement flexible pipe is connected water tank bottom.
As further innovation of the present utility model, described temperature automatic collector comprises system switching, supply socket, temp probe socket, single-chip microcomputer and display element, described temperature element is connected with single-chip microcomputer by unibus, described temperature element is by being plugged on the temp probe socket and being connected of single-chip microcomputer, described temperature element adopts the mode of unibus, described temperature element is connected on the bus socket one by one, described display element is connected with single-chip microcomputer, and described single-chip microcomputer is connected with computing machine by serial ports.Make native system more stable by the unibus connection, and react sensitiveer, be subjected to ectocine little, and under the situation of no host computer, can realize the function of native system by direct connection 485 expansion bus, the cost of LED display element is also lower and more stable than LCD display.
As further innovation of the present utility model, be provided with some layers of woven wire in the described sand launder case, the sensing element of described temperature element is arranged on the node of woven wire.This kind method for arranging fixedly temperature element is difficult for displacement, has guaranteed the accuracy of measuring, and reticulate texture can make the temperature data of acquisition linear better simultaneously, and degree of accuracy is also higher.
As further innovation of the present utility model, described single-chip microcomputer is connected with computing machine by bus.It is simple to have hardware circuit, software operation is convenient, temperature sampling precision height (0.0625 ° of C), function are strong, and volume is little, advantages such as simple and flexible, can be applied to control the various occasions of temperature between-55 ℃ to+125 ℃, can realize real-time collection, the real-time Presentation Function of measuring point temperature curve of temperature, by the combination of RS232 and host computer, the collection that the different acquisition frequency is carried out temperature can be set, upload to host computer, for inquiry and preservation.
As further innovation of the present utility model, described experiment well quantity is at least two mouthfuls, and wherein said constant temperature constant flow water filling device is connected with a bite experiment well at least.By as above technical scheme, the experiment well that can select to install constant-heat source carries out the natural convection experimental study under the constant-heat source condition, can carry out different well and take out-irritate, and singly takes out single filling, not can be used as inspection well as the experiment well of main shaft and uses.By selection and the combination to different wells, be implemented under different size and the position test situation, the requirement of different well test has been satisfied in the test of duty parameter.Obtain the test figure under different tests condition and the boundary condition, satisfied the needs of scientific research.
As further innovation of the present utility model, described sand launder case primary structure body is that brick mixes material, inlays tempered glass at inwall.This kind structure, brick mixes material, not only intensity is good, is subjected to ectocine such as temperature also little, inlays tempered glass at inwall, makes the closed test structure be convenient to cleaning, water proofing property might as well, corrosion-vulnerable not.Stability and the accuracy of test have further been guaranteed.
The beneficial effects of the utility model are: the design of sand launder agent structure is succinct, easy to operate, the requirement of different well test has been satisfied in the design of many mouthfuls of experiment wells, and the temperature element layout that presets wire basket is ingenious, and the employing bottom of drawing water is drawn water and drawn water simpler than traditional suction pump; Water-level control apparatus can simulation test in different groundwater velocities, the utilization of water circle device can not cause the waste of water in the process of the test; The constant control device introduced in the system has solved in the test requirement to the regime flow water filling, precision higher (0.1-1L/h), stability is strong, the cost cost is low, be to have about 1/4 of peristaltic pump price on the market now, and the peristaltic pump flow is less relatively, can not satisfy the requirement of large scale shop experiment; The utilization of thermostatically-controlled equipment can provide constant thermal source, and both are in conjunction with the requirement of having satisfied in the test water source constant temperature constant water filling.It is simple that the multi-point temp automated collection systems that adopts in the system has a hardware circuit, software operation is convenient, temperature sampling precision height (0.0625 ° of C), function are strong, volume is little, advantages such as simple and flexible, the various occasions of temperature between-55 ℃ to+125 ℃ can be applied to control, real-time collection, the real-time Presentation Function of measuring point temperature curve of temperature can be realized.
Description of drawings
The structural representation of Fig. 1 sand launder physical experiments system sand launder case.
Fig. 2 passes in and out the structural representation of water tank.
The structural representation of Fig. 3 constant temperature constant flow water filling device.
The Design Plans of Fig. 4 multi-point temp automated collection systems.
Embodiment
Be described further below in conjunction with accompanying drawing
Contrast Fig. 1 the utility model comprises that by sand launder framed structure 1 base and both sides advance, water tank 13,5 form, lay heat-barrier material 14 in the sand launder from bottom to up, porous medium 15, heat-barrier material 14, water proof medium 12, add coping 6, wherein, experiment well 11 is equally distributed in the sand launder, pressure measurement flexible pipe 19 is equipped with in every mouthful of shaft bottom, adopt the wire basket fixed form to arrange temperature element 20 in the groove, 10 is the pickup wire way outlet, presetting heating rod 9 in well W3 is connected with thermostatically-controlled equipment 8, temperature element 20 is connected with temperature acquisition system 7 by serial ports, the water level control apparatus of pilot system is by rotational circle column casing 3, self-priming pump 13, loop device of the common composition of circulating water pool, advance, water tank 14,4 and porous medium water-bearing zone 16 between fill hyposmosis material 2, also being provided with catch basin 17 in the bottom of turnover water tank collects back and overflows the water that overflows in the cylindrical drum, bottom at experiment well also is connected with pressure measurement flexible pipe 18, vertically the time, can directly observe the pressure that obtains WIH, when perseverance is put, can obtain the flow velocity of water by glass rotameter.
Contrast Fig. 2, this device is that water level is regulated synoptic diagram, it is the part of sand launder structure, it is made up of spilling water cylindrical drum 1, water inlet 2, rotary screw 3, mistake water tube hose 4, self-priming pump 5 five parts, it is to utilize water inlet 2 water inlets that concrete water level is regulated implementation process, rotation by rotary screw 3 drives moving up and down of spilling water cylindrical drum 1, and control realizes the purpose of control flow velocity into and out of the water-head at water tank two ends.
Contrast Fig. 3 the utility model mainly is the device that can realize constant temperature constant water filling control, it is by experiment well 1, water filling temperature element 2,3 core leads (fine rule) 3, single-chip microcomputer constant temperature system 4, water source temperature element 5, return pipe 6, heating rod group 7, return pipe 8, supercharge pump 9, threeway 10, three-way cock 11, connect flexible pipe (thick line) 12, glass rotameter 13, level communicating pipe 14, stirrer 15, water filling bucket 16, bucket 17 supplies water, supply water inlet 18, self-priming pump 19, switch 20, discharger 21, water collecting basin 22 grades are partly formed, single-chip microcomputer constant temperature system 4, it is based on the temperature detection constant temperature system of single chip computer AT 89S52, mainly with the DS18B20 of widespread use as temperature detection device, this instrument has the measuring accuracy height, hardware circuit is simple, and can well show, can test the characteristics of varying environment temperature.Link to each other with control circuit in addition, can make temperature parameter in predefined scope to adding the control of circuit temperature, do not need participating in directly of people.Native system also links to each other with host computer by RS232, and the collection of carrying out temperature every the regular hour can be set, and uploads to host computer, for inquiry and preservation.Whole constant temperature constant systematic realizing program is as follows: water filling bucket 16 and the bucket 17 that supplies water are by being connected level communicating pipe 14, in the water supply bucket 17 discharger 21 is installed, water table ratio level communicating pipe 14 is slightly high, draw water to the bucket 17 that supplies water from water collecting basin 22 by self-priming pump 19, water overflowed and flows back to water collecting basin 21 when water level surpassed discharger 21, like this, along with constantly water filling in the experiment well 1 of supercharge pump 9, water level decreases in the water filling bucket 16, supply water bucket 17 by communicating pipe 14 to water filling bucket 16 continuous nourishment sourcves, guaranteed the constant of the water yield in the water filling bucket 16; Single-chip microcomputer constant temperature system 4 can be by water temperature signal in the water filling port temperature element 2 monitoring water filling buckets 16 by the unlatching of relay control heating rod, heating rod group 7 is made up of a plurality of heating rods in this device, can adjust the quantity that heating rod is opened according to the needs of injection flow, during work, turn on agitator 15, make the water in the water filling bucket 16 keep recurrent state, thereby guarantee that distribution of water temperature is even, in the temperature range of default, measure temperature in the water filling bucket 16 by water filling temperature element 3, single-chip microcomputer constant temperature system 4 can be realized when temperature is lower than design temperature in the bucket, automatically open, when temperature is higher than design temperature, disconnect heating rod, make the steel inner bucket water keep temperature constant state, and, in order to guarantee heat loss on the line under length variations that difference connects flexible pipe 12 and Various Seasonal temperature difference condition, can be by thermal water source's temperature element 6 temperature setting in the timely Adjustment System of monitoring outlet water temperatures in real time; Straight-through two ends in threeway 10, wherein, one end connects three-way cock 11,11 are connected with spinner-type flowmeter 13 again, the other end connects return pipe 8, the 3rd outlet is connected with supercharge pump 9, simultaneously, supercharge pump inserts water inlet pipe 6, and like this, the thermostatted water in the metal bucket of the left side can realize that constant draws water by this kind connected mode, during on-test, start supercharge pump 9, test required flow by adjustment and the control of observation spinner-type flowmeter dial plate reading of three-way cock 11, thereby reached the testing requirements of constant temperature constant water filling.
Contrast Fig. 4 is the Design Plans of multi-point temp automated collection systems, mainly contains system switching 1, supply socket 2, temp probe connector 3 three parts composition, and wherein, the selection of temp probe connector makes things convenient for multipoint temperature measuring, and it is convenient and swift to change probe.In native system, utilize DS18B20 to carry out thermometric, carrying out data based on single chip computer AT 89S51 handles, 1602 show, it is simple to have hardware circuit, temperature sampling precision height, function are strong, and volume is little, advantages such as simple and flexible, the various occasions of temperature between-55 ℃ to+125 ℃ can be applied to control, real-time collection, the Presentation Function of temperature can be realized.The multi-route measuring temperature system that adopts DS18B20 numeral temperature element and 89S51 single-chip microcomputer to constitute in the utility model, adopt a mode (data lines of unibus, on an I/O mouth), can articulate a plurality of 18B20 at unibus, the touring multi-point temp that detects under MCU control, be connected with computing machine by serial ports, preserve image data in real time, can expand 485 buses in the place that does not possess the computer field collection, the small wireless isotype is carried out functions such as long-distance transmissions.

Claims (10)

1. porous medium aquifer water-thermal coupling sand launder physical experiments system is characterized in that, described model test system comprises the sand launder case, and water level is regulated circulating device, temperature automatic acquisition device and constant temperature constant flow water filling device;
Described sand launder case comprises some experiment wells, porous medium, the pressure measurement flexible pipe, glass rotameter, heating arrangement, sand launder case ectosome and porous medium, described sand launder case ectosome bottom is provided with pressure measurement flexible pipe and the glass rotameter that the number experiment well equates, described glass rotameter is communicated with by pressure measurement flexible pipe and experiment well bottom, and described some experiment wells wherein are equipped with heating arrangement in a bite arbitrarily;
Described water level is regulated circulating device and is comprised device urceolus and self-priming pump, and described device urceolus and sand launder case ectosome are communicated with by the hyposmosis material;
Described temperature automatic acquisition device comprises temperature element and temperature automatic collector, and described temperature element is arranged in the porous medium of described sand launder case, and the other end is connected with the temperature automatic collector;
Described constant temperature constant flow water filling device comprises self-priming pump, the water filling bucket, and heating arrangement and spinner-type flowmeter, described self-priming pump is connected with described experiment well by spinner-type flowmeter, and described heating arrangement is arranged in the water filling bucket, and the described self-priming pump other end is connected with steel drum.
2. a kind of porous medium aquifer water as claimed in claim 1-thermal coupling sand launder physical experiments system is characterized in that described porous medium bottom is equipped with heat-barrier material, and top successively is equipped with heat-barrier material, water proof medium and add coping.
3. a kind of porous medium aquifer water as claimed in claim 1-thermal coupling sand launder physical experiments system, it is characterized in that, be provided with threeway and three-way cock between the self-priming pump of described constant temperature constant flow water filling device and the glass rotameter, described three-way cock and self-priming pump interconnect by threeway, an other end of threeway feeds in the water filling bucket by conduit, the other end of three-way cock is connected with glass rotameter, be provided with temperature element in described water filling bucket and the experiment well, described self-priming pump, heating arrangement in temperature element and the water filling bucket all is connected on the single-chip microcomputer, is provided with stirring machine in the described water filling bucket.
4. porous medium aquifer water as claimed in claim 3-thermal coupling sand launder physical experiments system, it is characterized in that, described constant temperature constant flow water filling device is provided with the bucket that supplies water, described water filling bucket and the bucket that supplies water are by being connected level communicating pipe, in the water supply bucket discharger is installed, described constant temperature constant flow water filling device is provided with back pool, described back pool is connected with a self-priming pump by flexible pipe, described self-priming pump is connected with the bucket that supplies water by flexible pipe, and the described discharger other end is connected with water collecting basin.
5. porous medium aquifer water as claimed in claim 1-thermal coupling sand launder physical experiments system, it is characterized in that, be provided with water tank in the urceolus of described water level adjusting circulating device, the spilling water cylindrical drum, rotary screw, cross water tube hose, water supply hose and pressure measurement flexible pipe, the upper end opening part of described water tank is equipped with a sheet metal with threaded hole, described rotary screw is installed in the threaded hole of sheet metal, the spilling water cylindrical drum is fixed in the lower end of rotary screw, bottom at water tank is provided with catch basin, described spilling water cylindrical drum is communicated with catch basin, described self-priming pump one end is connected for one section with the mistake water tube hose, the other end is connected with catch basin, the described water tube hose other end of crossing is arranged on the tank outer wall upper end, and described pressure measurement flexible pipe is connected water tank bottom.
6. porous medium aquifer water as claimed in claim 1-thermal coupling sand launder physical experiments system, it is characterized in that, described temperature automatic collector comprises system switching, supply socket, the temp probe socket, single-chip microcomputer and display element, described temperature element is connected with single-chip microcomputer by unibus, described temperature element is by being plugged on the temp probe socket and being connected of single-chip microcomputer, described temperature element adopts the mode of unibus, described temperature element is connected on the bus socket one by one, described display element is connected with single-chip microcomputer, and described single-chip microcomputer is connected with computing machine by serial ports.
7. porous medium aquifer water as claimed in claim 1-thermal coupling sand launder physical experiments system is characterized in that, be provided with some layers of woven wire in the described sand launder case, the sensing element of described temperature element is arranged on the node of woven wire.
8. porous medium aquifer water as claimed in claim 3-thermal coupling sand launder physical experiments system is characterized in that described single-chip microcomputer is connected with computing machine by bus.
9. porous medium aquifer water as claimed in claim 1-thermal coupling sand launder physical experiments system is characterized in that described experiment well quantity is at least two mouthfuls, and wherein said constant temperature constant flow water filling device is connected with a bite experiment well at least.
10. porous medium aquifer water as claimed in claim 1-thermal coupling sand launder physical experiments system is characterized in that, described sand launder case primary structure body is that brick mixes material, inlays tempered glass at inwall.
CN 201320092133 2013-02-28 2013-02-28 Physical modeling experiment system for hydro-thermal coupling sand launder in porous medium water-bearing stratum Expired - Fee Related CN203178225U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115937A (en) * 2013-02-28 2013-05-22 河海大学 Physical model experiment system for water-heat coupling sand slot of porous medium aquifer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103115937A (en) * 2013-02-28 2013-05-22 河海大学 Physical model experiment system for water-heat coupling sand slot of porous medium aquifer
CN103115937B (en) * 2013-02-28 2016-03-23 河海大学 A kind of porous medium aquifer water-thermal coupling sand launder physical model experiment system

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