CN110261579A - A kind of automatic control ground wetting-drying test method and device - Google Patents
A kind of automatic control ground wetting-drying test method and device Download PDFInfo
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- CN110261579A CN110261579A CN201910590447.1A CN201910590447A CN110261579A CN 110261579 A CN110261579 A CN 110261579A CN 201910590447 A CN201910590447 A CN 201910590447A CN 110261579 A CN110261579 A CN 110261579A
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- 238000001035 drying Methods 0.000 title claims abstract description 122
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 71
- 238000012544 monitoring process Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000000523 sample Substances 0.000 claims description 77
- 238000005303 weighing Methods 0.000 claims description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 238000005485 electric heating Methods 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000004575 stone Substances 0.000 claims description 10
- 238000009736 wetting Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 239000012774 insulation material Substances 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000003556 assay Methods 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007791 dehumidification Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 208000033748 Device issues Diseases 0.000 claims 1
- 238000002474 experimental method Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000005442 atmospheric precipitation Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
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- 239000000945 filler Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Abstract
The invention discloses a kind of automatic control ground wetting-drying test method and devices, include the following steps: A, test sample is put into pallet, power on/switch；B, wet, dry time of repose and cycle-index are inputted in time controller instrument board, operating temperature is set in temperature controller instrument board, samples dried state moisture content, moisture state moisture content, sample total weight are inputted in moisture control instruments and meters disk；C, the moisture content of moisture control device real time monitoring oven interior sample；D, temperature controller dynamic monitoring, the adjustment indoor temperature of work；E, time controller is uniformly controlled test process, until entire wetting-drying test terminates, auto-stopper.The present invention integrates time controlled system, temperature control system and moisture control system, realizes the automatic control of ground wetting-drying test, easy to operate, improves the accuracy of test, while solving the problems, such as the parallel test in ground wetting-drying test.
Description
Technical field
The present invention relates to Geotechnical Engineering fields, and in particular to a kind of automatic control ground wetting-drying test method and
Device.
Background technique
When roadbed construction, roadbed is compacted around molding in optimum moisture content OMC.Road is built up initial stage, at subgrade soils
During unsaturated state, operation roadbed can continuous humidifying, and reached balance within 2 to 3 years time, i.e. the balance of roadbed
Humidity.There are many factor for the time for influencing the size of roadbed humidity and reaching equilibrium state, because of area, level of ground water, weather, road
The differences of factors such as based filler, pumping equipment quality, traffic feature and difference.However the equilibrium humidity of roadbed is not steady
It is fixed constant, roadbed in nature is exposed to constantly by environmental factors such as ground water table change, atmospheric precipitation, sunshine evaporations
Interference, roadbed humidity also therefore increase, reduce fluctuating change.Just because of this long-term drying and watering cycle, make the strong of the soil body
Degree and microstructure have an impact, to cause the disasters such as slope instability, Subgrade Subsidence, lead to huge economic loss and people
Member's injures and deaths event.
Traditional ground drying and watering cycle instrument is by manual operations, and the degree of automation is low, since drying and watering cycle is tested
It takes a long time, the conversion process for being humidified and drying must be realized manually, and the amount of labour hand-manipulated is big, and low efficiency is at high cost, and people
Work operation is big to experiment interference, causes experimental result discreteness big.
In existing automation wetting-drying circular tester, if number of patent application is the " dry of ZL201420392852.5
Wet circulation experiment device " technology, the device include cabinet, and test-piece stand is equipped in cabinet, and the top of test-piece stand is equipped with spray head, cabinet
The interior space being equipped with for accommodating test(ing) medium, the space are connect by pump with spray head, and cycle timer is electrically connected with pump；In case
At least one air-dried electric fan against test-piece stand is additionally provided on body.The test stand has certain height, test-piece stand lower section
Cabinet in the empty space constituted for accommodating test(ing) medium, the bottom of cabinet is connected to pumping.Although rock may be implemented in the device
The purpose of native wetting-drying test, but entire experiment cyclic process only relies on preset time control, and the degree of automation is not
Height is easily led in experimentation, and relatively large deviation occur in experiment value and design value, influences experimental result.For another example number of patent application is
A kind of " automation rock sample drying and watering cycle laboratory apparatus " technology of ZL201410610585.9, the instrument is by drying and watering cycle mechanism
Synchronous pulley and synchronous belt transmitting stepper motor input power, drive be installed on two sides screw-driven posts rotation；Crossbeam
Cooperated by screw thread and two screw-driven posts, the rotate driving crossbeam of screw-driven posts moves up and down, so that sample be driven to adjust
Sample is recycled to immerse in sink to soak and promoted to air drying area and be air-dried by mechanism.Rock sample wetting-drying test process is by being located at outside
Mating detection control and processing module carried out automatically controlling by program.Although the device may be implemented to automatically control rock sample dry and wet
The purpose of cyclic test, but the device can not achieve and accurately control to temperature, can not carry out parallel test, so that test
In the presence of very big contingency.Higher therefore, it is necessary to innovate a kind of the degree of automation, governing factor is more comprehensive, and can be to multiple groups
Sample carries out the automatic control ground drying and watering cycle experimental provision and method of wetting-drying test simultaneously.
Summary of the invention
The first object of the present invention is to be the provision of a kind of automatic control ground drying and watering cycle experimental method, passes through the time
Control system adjusts the wet of all samples, drying cycles state and cycle-index during test, and combined temperature controller is dynamic
State adjusts therrmodynamic system, and moisture content adjuster dynamic regulation sample moisture content realizes ground drying and watering cycle automatic control device
Working condition.
The second object of the present invention is to be the provision of a kind of automatic control ground wetting-drying circular tester, user
Just, efficient, economical and energy saving is run.
To realize above-mentioned first purpose, the invention adopts the following technical scheme: a kind of automatic control ground drying and watering cycle tries
Proved recipe method, includes the following steps:
A, test sample is got out, is put into removable pallet, wetting and drying cycle apparatus power supply/switch, power supply/switch are connected
The power supply state of overall control time controlled system, temperature control system and moisture control system, in time controlled system
The wet of time controller Control Assay, drying cycles state and cycle-index；Temperature controller in temperature control system is straight
It connects control electric heating tube and electric fan working condition, electric heating tube and electric fan and provides drying heat for drying and watering cycle operating room
Wind, and the indoor temperature of real-time control drying and watering cycle work；Moisture control device in moisture control system controls water inlet
Inlet valve, and pass through the feedback information of moisture content monitoring probe and weighing sensor, it is tried in real-time control drying and watering cycle operating room
The moisture content of sample；
B, wet time of repose, dry time of repose and cycle-index are inputted in time controller instrument board, in temperature
Wetting and drying cycle apparatus initial operating temperature is set in controller instrument board, inputs samples dried in moisture control instruments and meters disk
The parameters such as state moisture content, moisture state moisture content, sample total weight；
C, after setting corresponding data on time controller, temperature controller, moisture control instruments and meters disk,
Wetting and drying cycle apparatus is started to work, first automatic opening inlet valve, and controls water intake velocity, makes to test water body by filling the water hose
It slowly injects in permeable stone, the weight of weighing sensor real-time monitoring drying and watering cycle inside working chamber sample, when sample total weight
When reaching the value of setting, moisture control device closes inlet valve, stops water filling；
D, after inlet valve is closed, sample carries out nature water suction, and the moisture content monitoring probe arranged in sample implements monitoring simultaneously
Sample moisture content information is fed back into moisture control device, when moisture content reaches setting value, moisture control device sends out signal
To time controller, time controller starts to calculate wet time of repose；
E, after reaching the time of repose of setting, time controller issues call for heat to temperature controller, and device is automatic
Air inlet valve, outlet air valve are opened, hot-air system is started to work, and temperature sensor monitors drying and watering cycle inside working chamber temperature in real time
Degree shows temperature information feedback to temperature controller processing, temperature controller according to the difference of operating temperature and real time temperature,
Dynamic adjustment hot-air system working condition；
F, when sample total weight reaches the value of setting, moisture control device is issued to temperature controller and is ordered, and is stopped at this time
It only heats, and carries out natural cooling, moisture content monitoring probe is implemented to monitor and sample moisture content information is fed back to moisture content control
Device processed, when moisture content reaches setting value, signal is issued time controller by moisture control device, closes air inlet valve, outlet air
Valve, time controller start to calculate dry time of repose；After reaching the time of repose of setting, time controller is again to containing
Water rate controller issues order, opens inlet valve, then carries out cyclic test next time, until entire cyclic test terminates.
The significant technical effect that the present invention obtains are as follows: by during the integrally-regulated test of time controlled system sample it is wet
Profit, drying cycles state and cycle-index, combined temperature controller dynamic regulation therrmodynamic system, moisture content adjuster dynamic regulation
Sample moisture content realizes the working condition for automatically controlling ground wetting and drying cycle apparatus, improves the accuracy of test, solve simultaneously
Parallel test problem in ground wetting-drying test.
To realize above-mentioned second purpose, the invention adopts the following technical scheme: a kind of automatic control ground drying and watering cycle tries
Experiment device, including cabinet, hot-air system, time controlled system, temperature control system, moisture control system and test specimen hold dress
It sets, cabinet is the rectangular hollow box of drying and watering cycle operating room built in one, is made of drying and watering cycle operating room and cabinet shell；Hot wind
System is made of heating room, electric fan and electric heating tube, and time controlled system is controlled by time controller, temperature control system
Be made of temperature controller, temperature sensor, moisture content monitoring system by moisture control device, inlet valve, weighing sensor, contain
Water rate monitoring probe and weighing tray composition；Test specimen apparatus for placing is placed in the drying and watering cycle operating room of cabinet, hot-air system
It is embedded on the left of drying and watering cycle operating room, time controlled system is embedded in cabinet shell upper left side, and temperature control system is embedded in
Cabinet shell lower part, moisture control system are embedded in cabinet shell lower left side；In power supply/switch and time controlled system when
Between controller be connected, time controller is connected simultaneously in temperature controller in temperature control system and moisture control system
Moisture control device, temperature controller respectively in temperature sensor, hot-air system electric heating tube and electric fan be connected, contain
Moisture control device in water rate monitoring system is connected with moisture content monitoring probe, inlet valve and weighing sensor respectively.
As an improvement of the above technical solution, in one embodiment of the invention, the drying and watering cycle operating room and case
Alumina silicate fibre thermal insulation material is filled between body case, cabinet shell is made of sheet metal, and drying and watering cycle operating room uses
A heat extraction air piping air outlet is arranged in the production of quality structure steel plate, drying and watering cycle operating room top, and facade setting side is opened before cabinet
Air outlet is arranged in door, right side bottom end, and water inlet and four support legs are arranged in bottom.
As an improvement of the above technical solution, in one embodiment of the invention, electric heating tube is placed in heating vertically
Interior, electric fan is placed on the downside of electric heating tube, the two is not connected to, and electric fan is low noise high-temperature resistant axial-flow fan,
Impeller, volute are all made of stainless steel production, and electric fan host is placed on the left of cabinet, between electric fan host and heating room
It is provided with alumina silicate fibre thermal insulation material；Electric heating tube is rearranged by more heating tube block forms, and is placed in drying and watering cycle
Heat insulation layer is arranged between electric heating tube and drying and watering cycle operating room in operating room's left part.
As an improvement of the above technical solution, in one embodiment of the invention, the time controller is by data
It is integrated to manage device, timer, display and control panel, and as information transmission center, using call wire respectively with temperature
Controller, moisture control device, power supply/switch are connected, and are uniformly controlled entire test process.
As an improvement of the above technical solution, in one embodiment of the invention, the temperature sensor is set to dry
On the left of wet cycle operation room, be connected by transfer wire with temperature controller, temperature controller by data processor, display and
Control panel is integrated, is connected by call wire with temperature sensor, and acquisition, temperature sensor data use simultaneously
Call wire is connect with electric heating tube, electric fan, and then controls hot-air system, realizes real-time monitoring and regulating drying and watering cycle operating room
Interior state of temperature.
As an improvement of the above technical solution, in one embodiment of the invention, the moisture content monitoring probe arrangement
In sample, the moisture content data measured are transmitted to moisture control device in real time, weighing tray passes through thermal insulation ceramics pad and weighing
Sensor is connected, weighing sensor is connected by transfer wire with moisture control device, moisture control device by data processor,
Display and control panel are integrated, are connected by call wire with weighing sensor, acquisition, processing weighing sensor data,
And can real-time display, monitoring sample moisture content information, while controlling the switch state of inlet valve, so the dehumidification of Control Assay and
Humidification process；Weighing tray is the plate of stainless steel production, and four weighing sensors are arranged below weighing tray, and weighing tray will
In the weight transfer to weighing sensor of movable carriage.
As an improvement of the above technical solution, in one embodiment of the invention, the test specimen apparatus for placing is by permeable
Stone, tray rack and pallet composition, tray rack are fixed on drying and watering cycle operating room far from 1/6~1/5 position of bottom surface, and tray rack is using resistance to
Hot steel grating, pallet number are 6, are uniformly fixed on tray rack, the shapes and sizes of pallet can according to ground sample into
Row selection, permeable stone are arranged on pallet.
As an improvement of the above technical solution, in one embodiment of the invention, lowest part setting is reserved on the left of cabinet
Test interface, for parameters such as the rebound of test sample, stress, strains.
As an improvement of the above technical solution, in one embodiment of the invention, temperature sensor is high temperature high precision
Platinum resistance pt100 formula, maximum range are 110 DEG C, and measurement error is less than 0.1 DEG C.
Compared with prior art, automatic control ground dry and wet can be achieved the invention has the following beneficial effects: the present invention to follow
Loop device work, has the characteristics that convenient, efficient, energy saving.Compared with traditional ground drying and watering cycle instrument, when the present apparatus integrates
Between control system, temperature control system and moisture control system, realize the increasingly automated control of wetting-drying test, solve
The amount of labour is big in wetting-drying test, and low efficiency is at high cost, the manual operation problem big to test result interference, improves
Test efficiency and test accuracy.Compared with number of patent application is " the drying and watering cycle experimental provision " of ZL201420392852.5,
This method and device devise temperature control system and moisture control system, can be in real-time inspection and control drying and watering cycle operating room
Temperature and water-cut variation, and according to design value to experimental condition carry out dynamic adjustment, be different from drying and watering cycle experimental provision
It can only solve the not high brought experimental result of the degree of automation by the entire test process of control of preset time and miss
Poor problem.Compared with number of patent application is " a kind of automation rock sample drying and watering cycle laboratory apparatus " of ZL201410610585.9,
This method and device are additionally arranged temperature control system, realize and accurately control to test drying temperature, reduce temperature change
Influence for test result, improves the accuracy of test, and realizes multiple groups parallel test while carrying out, and avoids test
The generation of middle contingency event.In addition, the humidification process of test can restore reality by the way of absorbing water naturally to the greatest extent
The drying and watering cycle process of roadbed in engineering.
Detailed description of the invention
It, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical solution of the present invention
The attached drawing used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Its attached drawing.
Fig. 1 is the structural facades figure that the present invention automatically controls ground wetting-drying circular tester；
Fig. 2 is the cross-sectional view of the structure at I-I place in Fig. 1 of the present invention；
Fig. 3 be the present invention can weighing tray plane structure chart；
Fig. 4 is the control principle frame diagram that the present invention automatically controls ground wetting-drying test method.
In figure: 1- cabinet, 2- hot-air system, 3- time controlled system, 4- temperature control system, 5- moisture control system
System, 6- test specimen apparatus for placing, 7- power supply/switch, 8- reserve test interface, 9- time controller, 10- temperature controller, 11- and contain
Water rate controller, 12- ventilation shaft air inlet, 13- heating room, 14- electric heating tube, 15- thermal insulation layer, 16- air inlet, 17- electricity
Dynamic blower, 18- tray rack, 19- temperature sensor, 20- permeable stone, 21- pallet, 22- ventilation duct air outlet, 23- weighing tray,
24- water inlet, 25- weighing sensor, 26- water filling hose, 27- air outlet, 28- support leg, 29- ventilation shaft, 30- water inlet
Valve, 31- enter the wind valve, 32- outlet air valve, 33- wheel, 34 drying and watering cycle operating rooms, 35 moisture content monitoring probes, 36- sample.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
Automatic control ground wetting-drying test method provided in an embodiment of the present invention, as shown in Figs 1-4, including following steps
It is rapid:
A, test sample 36 is got out, is put into removable pallet 21, wetting and drying cycle apparatus power supply/switch 7, electricity are connected
The power supply state of 7 overall control time controlled system 3 of source/switch, temperature control system 4 and moisture control system 5, time control
The wet of 9 Control Assay of time controller, drying cycles state and cycle-index in system 3 processed；In temperature control system 4
Temperature controller 10 directly controls 17 working condition of electric heating tube 14 and electric fan, and electric heating tube 14 and electric fan 17 are dry
Wet cycle operation room 34 provides drying hot wind, and the temperature in real-time control drying and watering cycle operating room 34；Moisture control system 5
In moisture control device 11 control water inlet inlet valve 30, and pass through the anti-of moisture content monitoring probe 35 and weighing sensor 25
Feedforward information, the moisture content of sample 36 in real-time control drying and watering cycle operating room 34 are formed by always to the electric control system divided, energy
It is uniformly controlled the wet of sample, drying cycles process in entire test；
B, wet time of repose, dry time of repose and cycle-index are inputted in 9 instrument board of time controller, in temperature
Wetting and drying cycle apparatus initial operating temperature is set in 10 instrument board of controller, inputs sample in 11 instrument board of moisture control device
The parameters such as drying regime moisture content, moisture state moisture content, sample total weight；
C, when setting corresponding data on time controller 9, temperature controller 10,11 instrument board of moisture control device
After, wetting and drying cycle apparatus is started to work, first automatic opening inlet valve 30, and controls water intake velocity, passes through test water body
Water filling hose 26 slowly injects in permeable stone 20,25 real-time monitoring drying and watering cycle operating room of weighing sensor, 34 inside sample 36
Weight, when sample total weight reaches the value of setting, moisture control device 11 closes inlet valve 30, stops water filling；
D, after inlet valve 30 is closed, sample carries out nature water suction, and the moisture content monitoring probe 35 arranged in sample implements prison
It surveys and sample moisture content information is fed back into moisture control device 11, when moisture content reaches setting value, moisture control device 11
Signal is issued into time controller 9, time controller 9 starts to calculate wet time of repose, and the humidification process of test uses nature
The mode of water suction can restore the drying and watering cycle process of roadbed in Practical Project to the greatest extent；
E, after reaching the time of repose of setting, time controller 9 issues call for heat to temperature controller 10, and device is certainly
Dynamic to open air inlet valve 31, outlet air valve 32, hot-air system 2 is started to work, and temperature sensor 19 monitors drying and watering cycle work in real time
Make 34 internal temperature of room, temperature information feedback is shown that temperature controller 10 is according to operating temperature to the processing of temperature controller 10
With the difference of real time temperature, dynamic adjusts 2 working condition of hot-air system；Dynamic during drying and watering cycle is set to monitor, show and do
Temperature change in wet cycle operation room 34, and utilize the temperature in temperature information adjustment drying and watering cycle operating room 34；
F, when 36 total weight of sample reaches the value of setting, moisture control device 11 is issued to temperature controller 10 and is ordered,
Stop heating at this time, and carry out natural cooling, 35 real-time monitoring of moisture content monitoring probe simultaneously feeds back to sample moisture content information
Moisture control device 11, when moisture content reaches setting value, signal is issued time controller 9 by moisture control device 11, is closed
Valve 31, outlet air valve 32 are entered the wind, time controller 9 starts to calculate dry time of repose；After reaching the time of repose of setting,
Time controller 9 issues to moisture control device 11 order again, opens inlet valve 30, then carries out cyclic test next time,
Until entire cyclic test terminates；During entire drying and watering cycle, the moisture content of 5 dynamic monitoring sample of moisture control system
Variation, and moisture content information real-time display and processing are utilized, realize the dry and wet automatically controlled by sample water-cut variation state
Cycle operation state.
The present invention passes through the wet of sample, drying cycles state and circulation during the integrally-regulated test of time controlled system
Number, combined temperature controller dynamic regulation therrmodynamic system, moisture control device dynamic regulation sample moisture content realize automatic control
The working condition of ground wetting and drying cycle apparatus processed, improves the accuracy of test, while solving in ground wetting-drying test
Parallel test problem.
Automatic control ground wetting-drying circular tester provided in an embodiment of the present invention, as shown in Figs 1-4, by cabinet 1, heat
Wind system 2, time controlled system 3, temperature control system 4, moisture control system 5 and test specimen apparatus for placing 6 are constituted, and test specimen is contained
It puts device 6 to be placed in the drying and watering cycle operating room 34 of cabinet 1, be filled between 1 shell of drying and watering cycle operating room 34 and cabinet
Alumina silicate fibre thermal insulation material, hot-air system 2 is embedded in 34 left side of drying and watering cycle operating room, time controlled system 3 is embedded in case
1 shell upper left side of body, temperature control system 4 are embedded in 1 outer casing underpart of cabinet, and moisture control system 5 is embedded in 1 shell of cabinet
Lower left side；Cabinet power supply/switch 7 is connected with the time controller 9 in time controlled system 3, and time controller 9 connects temperature simultaneously
The temperature controller 10 in control system 4 and the moisture control device 11 in moisture control system 5 are spent, temperature controller 10 divides
Not in temperature sensor 19, therrmodynamic system 2 electric heating tube 14 and electric fan 17 be connected, in moisture content monitoring system 5
Moisture control device 11 is connected with moisture content monitoring probe 35, inlet valve 30 and weighing sensor 25 respectively.
The cabinet 1 is the rectangular hollow box of drying and watering cycle operating room 34 built in one, by drying and watering cycle operating room 34 and case
1 shell of body composition, drying and watering cycle operating room 34 is connected with 1 shell of cabinet by alumina silicate fibre thermal insulation material.1 shell of cabinet is adopted
It is made of sheet metal, drying and watering cycle operating room 34 is made of quality structure steel plate, and a heat extraction air hose is arranged in 34 top of operating room
Road air outlet 22, facade setting side is opened the door before cabinet 1, and right side bottom end is arranged air outlet 27, bottom be arranged water inlet 24 and
Four support legs 28.Reserved test interface 8 is arranged in 1 left side lowest part of cabinet, can test sample the ginseng such as rebound, stress, strain
Number.
The hot-air system 2 is made of heating room 13, electric fan 17 and electric heating tube 14, electric fan 17, electric heating
Pipe 14 is connected with temperature controller 10 respectively by electric lead, and electric heating tube 14 is placed in vertically in heating room 13, electric fan
17 are placed in 14 downside of electric heating tube, the two is not connected to, and electric fan 17 is low noise high-temperature resistant axial-flow fan, impeller, whirlpool
Shell is all made of stainless steel production, and 17 host of electric fan is placed in 1 left side of cabinet, between 17 host of electric fan and heating room 13
Alumina silicate fibre thermal insulation material is set；Electric heating tube 14 is rearranged by more (4-8 root) heating tube block forms, electric heating tube
14 are placed in 34 left part of drying and watering cycle operating room, and heat insulation layer is arranged between electric heating tube 14 and drying and watering cycle operating room 34
15, thermal insulation layer 15 is alumina silicate fibre thermal insulation material.HSTL-PT100-M20, electric fan are controlled in 10 model China of temperature controller
17 model JAKEL FASCO J238-112-11263.
The time controlled system 3 is mainly controlled by time controller 9, and time controller 9 is by data processor, timing
Device, display and control panel are integrated, and as information transmission center, using call wire respectively with temperature controller 10,
Moisture control device 11, power supply/switch 7 are connected, and are uniformly controlled entire test process.
The temperature control system 4 is made of temperature controller 10, temperature sensor 19, and temperature sensor 19 is set to dry
34 left side of wet cycle operation room, is connected by transfer wire with temperature controller 10, temperature controller 10 by data processor, show
Show that device and control panel are integrated, is connected by call wire with temperature sensor 19, acquisition, temperature sensor data,
It is connect simultaneously using call wire with electric heating tube 14, electric fan 17, and then controls hot-air system 2, realize real-time monitoring and regulating
State of temperature in drying and watering cycle operating room 34；Temperature sensor 19 is high temperature high precision platinum resistance pt100 formula, maximum range
It is 110 DEG C, measurement error is less than 0.1 DEG C.Temperature sensor 19 is improved by China's control CH6 temperature controller.
The moisture content monitoring system 5 is monitored by moisture control device 11, inlet valve 30, weighing sensor 25, moisture content
Probe 35 and weighing tray 23 form, and moisture content monitoring probe 35 is arranged in sample 36, the moisture content data that will be measured in real time
It is transmitted to moisture control device 11, weighing tray 23 is connected by thermal insulation ceramics pad with weighing sensor 25, weighing sensor 25 is logical
It crosses transfer wire to be connected with moisture control device 35, moisture control device is integrated by data processor, display and control panel
One, is connected by call wire with weighing sensor 25, acquisition, processing 25 data of weighing sensor, and can real-time display, monitoring
Sample moisture content information, while the switch state of inlet valve 30 is controlled, and then the dehumidification and humidification process of Control Assay；Weighing support
Disk 23 is the plate of stainless steel production, and four weighing sensors 25, weighing sensor 25 and weighing are arranged below weighing tray 23
It is connected between pallet 23 using high-strength heat-insulation ceramic blanket, weighing tray 23 passes the weight transfer of removable tray rack to weighing
On sensor 25；Weighing sensor 25 is micro- spoke type weighing sensor, and range 20-50kg, synthesis precision is higher than 0.2%F
S.Moisture control device 11 is improved by Ou Luda AD2015D controller, 25 model Ou Luda AT8106-20 of weighing sensor.
The test specimen apparatus for placing 6 is made of permeable stone 20, tray rack 18 and pallet 21, and tray rack 18 is fixed on dry and wet and follows
Ring operating room 34 is away from 1/6~1/5 position of bottom surface, and tray rack 18 uses heat-resisting steel grating, and 21 numbers of pallet are 6, uniformly fixed
On tray rack 18, the shapes and sizes of pallet 21 can be selected according to ground sample, and permeable stone 20 is arranged in pallet 21
On.
The above is a preferred embodiment of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, it is noted that for those skilled in the art, without departing from the principle of the present invention, may be used also
To make several improvement and variation, these, which improve and change, is also considered as protection scope of the present invention.
Claims (10)
1. a kind of automatic control ground wetting-drying test method, which is characterized in that include the following steps:
A, test sample is got out, is put into removable pallet, wetting and drying cycle apparatus power supply/switch is connected, power supply/switch is overall
Control the power supply state of time controlled system, temperature control system and moisture control system, the time in time controlled system
The wet of controller Control Assay, drying cycles state and cycle-index；Temperature controller in temperature control system is directly controlled
Electric heating tube and electric fan working condition processed, electric heating tube and electric fan provide drying hot wind for drying and watering cycle operating room,
And the indoor temperature of real-time control drying and watering cycle work；Moisture control device control water inlet water inlet in moisture control system
Valve, and pass through the feedback information of moisture content monitoring probe and weighing sensor, sample in real-time control drying and watering cycle operating room
Moisture content；
B, wet time of repose, dry time of repose and cycle-index are inputted in time controller instrument board, are controlled in temperature
Wetting and drying cycle apparatus initial operating temperature is set in instruments and meters disk, and samples dried state is inputted in moisture control instruments and meters disk
The parameters such as moisture content, moisture state moisture content, sample total weight；
C, after setting corresponding data on time controller, temperature controller, moisture control instruments and meters disk, dry and wet
Circulator is started to work, first automatic opening inlet valve, and controls water intake velocity, makes to test water body through water filling hose slowly
It injects in permeable stone, the weight of weighing sensor real-time monitoring drying and watering cycle inside working chamber sample, when sample total weight reaches
When the value of setting, moisture control device closes inlet valve, stops water filling；
D, after inlet valve is closed, sample carries out nature water suction, and the moisture content monitoring probe arranged in sample implements monitoring and will examination
Sample moisture content information feeds back to moisture control device, when moisture content reaches setting value, when moisture control device issues signal
Between controller, time controller starts to calculate wet time of repose；
E, after reaching the time of repose of setting, time controller issues call for heat to temperature controller, and device automatically opens
Valve, outlet air valve are entered the wind, hot-air system is started to work, and temperature sensor monitors drying and watering cycle inside working chamber temperature in real time,
Temperature information feedback is shown to temperature controller processing, temperature controller is moved according to the difference of operating temperature and real time temperature
State adjusts hot-air system working condition；
F, when sample total weight reaches the value of setting, moisture control device is issued to temperature controller and is ordered, and stops adding at this time
Heat, and natural cooling is carried out, moisture content monitoring probe is implemented to monitor and sample moisture content information is fed back to moisture control device,
When moisture content reaches setting value, signal is issued time controller by moisture control device, closes air inlet valve, outlet air valve,
Time controller starts to calculate dry time of repose；After reaching the time of repose of setting, time controller is again to moisture content
Controller issues order, opens inlet valve, then carries out cyclic test next time, until entire cyclic test terminates.
2. automatically controlling ground used in a kind of automatic control ground wetting-drying test method according to claim 1
Wetting-drying circular tester, which is characterized in that including cabinet (1), hot-air system (2), time controlled system (3), temperature control
System (4), moisture control system (5) and test specimen apparatus for placing (6), cabinet (1) are drying and watering cycle operating room (34) built in one
Rectangular hollow box, be made of drying and watering cycle operating room (34) and cabinet (1) shell；Hot-air system (2) is by heating room (13), electricity
Dynamic blower (17) and electric heating tube (14) composition, time controlled system (3) are controlled by time controller (9), temperature control system
(4) be made of temperature controller (10), temperature sensor (19), moisture content monitoring system (5) by moisture control device (11), into
Water valve (30), weighing sensor (25), moisture content monitoring probe (35) and weighing tray (23) composition；Test specimen apparatus for placing (6)
It being placed in the drying and watering cycle operating room (34) of cabinet (1), hot-air system (2) is embedded on the left of drying and watering cycle operating room (34),
Time controlled system (3) is embedded in cabinet (1) shell upper left side, and temperature control system (4) is embedded in cabinet (1) outer casing underpart,
Moisture control system (5) is embedded in cabinet (1) shell lower left side；In power supply/switch (7) and time controlled system (3) when
Between controller (9) be connected, time controller (9) connect simultaneously temperature controller (10) in temperature control system (4) with it is aqueous
Moisture control device (11) in rate control system (5), temperature controller (10) respectively with temperature sensor (19), hot-air system
(2) electric heating tube (14) and electric fan (17) in are connected, the moisture control device (11) in moisture content monitoring system (5) point
It is not connected with moisture content monitoring probe (35), inlet valve (30) and weighing sensor (25).
3. automatic control ground wetting-drying circular tester according to claim 2, which is characterized in that the drying and watering cycle
Alumina silicate fibre thermal insulation material is filled between operating room (34) and cabinet (1) shell, cabinet (1) shell uses sheet metal system
Make, drying and watering cycle operating room (34) are made of quality structure steel plate, and a thermal wind exhausting is arranged in drying and watering cycle operating room (34) top
Pipeline air outlet (22), facade setting side is opened the door before cabinet (1), and air outlet (27) are arranged in right side bottom end, bottom setting water inlet
Mouth (24) and four support legs (28).
4. automatic control ground wetting-drying circular tester according to claim 2, which is characterized in that electric heating tube (14)
It is placed in heating room (13) vertically, electric fan (17) is placed on the downside of electric heating tube (14), the two is not connected to, electric fan
It (17) is low noise high-temperature resistant axial-flow fan, impeller, volute are all made of stainless steel production, and electric fan (17) host is placed in
On the left of cabinet (1), alumina silicate fibre thermal insulation material is provided between electric fan (17) host and heating room (13)；Electric heating tube
(14) You Duogen heating tube block form rearranges, and is placed in drying and watering cycle operating room (34) left part, electric heating tube (14) with
Heat insulation layer (15) are set between drying and watering cycle operating room (34).
5. automatic control ground wetting-drying circular tester according to claim 2, which is characterized in that the time control
Device (9) is integrated by data processor, timer, display and control panel, and as information transmission center, using conduction
Line is connected with temperature controller (10), moisture control device (11), power supply/switch (7) respectively, be uniformly controlled entirely test into
Journey.
6. automatic control ground wetting-drying circular tester according to claim 2, which is characterized in that the temperature sensing
Device (19) is set on the left of drying and watering cycle operating room (34), is connected by transfer wire with temperature controller (10), temperature control
Device (10) is integrated by data processor, display and control panel, is connected by call wire with temperature sensor (19), is adopted
Collection, temperature sensor data, while being connect using call wire with electric heating tube (14), electric fan (17), and then control
Hot-air system (2) realizes the state of temperature in real-time monitoring and regulating drying and watering cycle operating room (34).
7. automatic control ground wetting-drying circular tester according to claim 2, which is characterized in that the moisture content prison
Probing head (35) is arranged in sample (36), is in real time transmitted to the moisture content data measured moisture control device (11), weighing support
Disk (23) is connected by thermal insulation ceramics pad with weighing sensor (25), weighing sensor (25) passes through transfer wire and moisture content control
Device (11) processed is connected, and moisture control device (11) is integrated by data processor, display and control panel, passes through call wire
It is connected with weighing sensor (25), acquisition, processing weighing sensor (25) data, and can real-time display, monitoring sample moisture content
Information, while the switch state of inlet valve (30) is controlled, and then the dehumidification and humidification process of Control Assay；Weighing tray (23) is
Four weighing sensors (25) are arranged in the plate of stainless steel production, weighing tray (23) lower section, and weighing tray (23) will move
In the weight transfer of bracket to weighing sensor (25).
8. automatic control ground wetting-drying circular tester according to claim 2, which is characterized in that the test specimen is held
Device (6) is made of permeable stone (20), tray rack (18) and pallet (21), and tray rack (18) is fixed on drying and watering cycle operating room
(34) away from 1/6~1/5 position of bottom surface, tray rack (18) uses heat-resisting steel grating, and pallet (21) number is 6, is uniformly fixed on
On tray rack (18), the shapes and sizes of pallet (21) can be selected according to ground sample, and permeable stone (20) setting is being held in the palm
On disk (21).
9. automatic control ground wetting-drying circular tester according to claim 2, which is characterized in that on the left of cabinet (1)
Reserved test interface (8) are arranged in lowest part, for parameters such as the rebound of test sample, stress, strains.
10. automatic control ground wetting-drying circular tester according to claim 6, which is characterized in that temperature sensor
It (19) is high temperature high precision platinum resistance pt100 formula, maximum range is 110 DEG C, and measurement error is less than 0.1 DEG C.
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| CN114062657A (en) * | 2021-11-16 | 2022-02-18 | 中国电建集团江西省电力设计院有限公司 | Rock-soil body dry-wet cycle test system and method in unsaturated state |
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