CN107271256A - A kind of analog temperature gradient fields and automatic loading device and its application method - Google Patents
A kind of analog temperature gradient fields and automatic loading device and its application method Download PDFInfo
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- CN107271256A CN107271256A CN201710376566.8A CN201710376566A CN107271256A CN 107271256 A CN107271256 A CN 107271256A CN 201710376566 A CN201710376566 A CN 201710376566A CN 107271256 A CN107271256 A CN 107271256A
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- pressing machine
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of analog temperature gradient fields and automatic loading device, including baking oven, heating, refrigeration system, temperature sensor, pressure sensor, servo-pressing machine, many gradient pressure feedways, solid steel tube, pressurized steel disc and computerized control system, heating and refrigeration system are evenly distributed on baking oven inwall, temperature sensor and pressure sensor are embedded in oven interior, many gradient pressure feedways on servo-pressing machine top are transferred the pressure in the sample in baking oven by solid steel tube and pressurized steel disc, computerized control system respectively with heating, refrigeration system, temperature sensor, pressure sensor, servo-pressing machine, many gradient pressure feedway electrical connections.The invention belongs to Geotechnical Engineering modeling techniques field, the present apparatus is simple in construction, easy for installation, cost is low, it is highly reliable, native physical condition under the conditions of various complex engineerings can be simulated.
Description
Technical field
The invention belongs to Geotechnical Engineering modeling techniques field, specifically refer to a kind of analog temperature gradient fields and add automatically
Carry and put and its application method.
Background technology
Implemented in full with the growing and strategy to develop western regions of China's underground space, China will be constantly for many years
Frozen Ground Area carries out the construction of the Important Project facilities such as railway, highway, petroleum pipeline, optical cable, water conservancy.Cold regions engineering builds meeting
Cause bottom ever-frozen ground to melt sedimentation, have a strong impact on the stability and normal operation of engineering.Newly-built cold regions engineering is faced with
Temperature close to 0 DEG C high temperature, the high soil containing frost be ever-frozen ground of the volume ice content more than 30%, global warming and for many years
Many problems that frozen soil is constantly degenerated.The construction of underground structure is more and more, as depth increases, native mechanical characteristic and temperature
Can occur significant changes.It is difficult often temperature and the stress for controlling to be continually changing simultaneously when being tested at present in laboratory
The two conditions, possess even if large-scale experiment room and realize that the simulation of approximate condition also will very high cost.
The content of the invention
To solve above-mentioned existing problem, Geotechnical Engineering can be used for simulate soil stress and temperature mould the invention provides one kind
The experimental rig and test method of type experiment, the device is by combining servo-pressing machine and temperature control system, then
Unify to be regulated and controled by computerized control system, realize the simulation of various complex stress conditions and temperature.The present apparatus is fully achieved
Self adjusting at any time for stress and temperature, facilitates look at influence of the various factors for resistance to shear of soil, is that the various soil bodys are real
Test and probe into there is provided more convenient instrument.This laboratory apparatus cost is relatively low simultaneously, and disclosure satisfy that most of experiments are required
The precision wanted, cost performance is very high.
The technical scheme that the present invention takes is as follows：A kind of analog temperature gradient fields of the present invention and automatic loading device, it is wrapped
Include baking oven, heating, refrigeration system, temperature sensor, pressure sensor, servo-pressing machine, many gradient pressure feedways,
Solid steel tube, pressurized steel disc and computerized control system, the heating and refrigeration system are evenly distributed on baking oven inwall,
Temperature sensor and pressure sensor are embedded in oven interior, and servo-pressing machine is below baking oven, and servo-pressing machine top is set
There are many gradient pressure feedways, solid steel tube is below many gradient pressure feedways, and pressurized steel disc is located at baking oven
Above interior sample, many gradient pressure feedways on servo-pressing machine top will be pressed by solid steel tube and pressurized steel disc
Power is delivered in the sample in baking oven, and computerized control system is passed with heating, refrigeration system, temperature sensor, pressure respectively
Sensor, servo-pressing machine, the electrical connection of many gradient pressure feedways.
Further, the heating and refrigeration system are annular setting, the heating and refrigeration system point
Pipe and refrigerator pipes She You not be heated, pipe and refrigerator pipes is heated and is made of lucite Steel material.Heating and refrigeration are
Two systems of uniting work independently, and are independent of each other, are uniformly controlled by computerized control system.
Further, the heating and refrigeration system highly alternate arrangement with baking oven, respectively with external heat
Exchange system constitutes circulation loop, and it is 10mm to heat pipe and refrigeration pipe diameter, heats pipe and the mutual parallel distance of refrigerator pipes
Between 8mm-10mm, each to play one's part to the full, reduction influences each other.
Further, the inwall of the baking oven is provided with groove, heats pipe and refrigerator pipes are close in groove respectively, groove
Surface is provided with insulation material layer.The characteristics of heating and maximum refrigeration system, is attached to each loop system on baking oven inwall
Cold pipe heats pipe and is all individually present and runs, and is responsible for conciliation by multiple controllers respectively, thus can be according to setting
Thermograde parameter adjust the refrigerator pipes at different depth respectively or heat pipe work, so as to efficiently rapidly obtain corresponding
Thermograde.
Further, the temperature sensor and pressure sensor pass through data collecting instrument and computerized control system phase respectively
Connection.
The AC power used in this programme uses the adjustable ac source of power frequency way of full-wave rectification.
The application method of a kind of analog temperature gradient fields and automatic loading device, comprises the following steps：
(1) model that will be studied is put into baking oven first；
(2) temperature sensor is arranged in model outer wall and soil sample from down to up, and passes through wire and data acquisition
Instrument is connected, and data collecting instrument, which gather, to be passed to computerized control system and handled after data, reflection soil each position temperature, so as to
In timely adjustment；
(3) pressure sensor is arranged in model outer wall and soil sample from down to up, and passes through wire and data acquisition
Instrument is connected, and data collecting instrument, which gather, to be passed to computerized control system and handled after data, reflection soil each position stress state,
In order to adjustment in time；
(4) soil sample top flattened and uniform placement pressurized steel disc at an upper portion thereof, servo-pressing machine top it is many
Gradient pressure feedway is transferred the pressure in the sample in baking oven by solid steel tube and pressurized steel disc, makes soil sample
Local uniform stress, the servo-pressing machine after existing improvement can realize many gradient pressurizations so that on each pressurized steel disc
By the pressure of different numerical value, and can at any time it be adjusted by computer, thus can be with soil complicated under simulating natural condition
Stress state；
(5) heating and refrigeration system are started by computerized control system, made by two system coordinations work in baking oven
Temperature reaches preset temperature, while starting servo-pressing machine and setting pressure parameter, temperature sensor and pressure sensor are anti-
Feedforward information, computerized control system receive information controls two systems to carry out feedback regulation, and two systems work independently simultaneously, all processes
Automatically controlled by computerized control system, it is achieved thereby that temperature and stress simulation in baking oven.
Using having the beneficial effect that the such scheme present invention is obtained：
(1) in the model test that can be widely applied to Geotechnical Engineering field and Other Engineering field, by adjusting servo
Forcing press and refrigerating and heating systems, are that complicated soil stress in model test and temperature conditionss simulation provide a kind of new way；
(2) servo-pressing machine after improving has multiple pressure supply units, by solid steel tube and steel disc by pressure transmission
To the part of experiment soil, more complicated stress state can be simulated；
(3) the uniform refrigerating and heating systems autonomous working being alternately distributed in oven interior, refrigerator pipes and heats pipe and is placed in
In groove, boundary condition native in experiment is not interfered with；
(4) physical state of the position of each in soil is reflected in time using pressure sensor and temperature sensor, well solution
Determine and the defects such as shortcoming and sensor installation difficulty of pressurization and temperature control are blindly carried out in traditional experiment；
(5) servo-pressing machine is adjusted by computer controller and temperature control system is run, pressure and temperature is by adjusting electric current
Size adjust rapidly, substantially reduce due to test error caused by feedback regulation time length.
Brief description of the drawings
Fig. 1 is the main structure diagram of analog temperature gradient fields of the present invention and automatic loading device；
Fig. 2 is that the refrigerator pipes inside analog temperature gradient fields of the present invention and automatic loading device are illustrated with pipe distribution is heated
Figure.
Wherein, 1, baking oven, 2, heating and refrigeration system, 3, temperature sensor, 4, pressure sensor, 5, servo pressure
Machine, 6, many gradient pressure feedways, 7, solid steel tube, 8, pressurized steel disc, 9, computerized control system, 10, heat pipe,
11st, refrigerator pipes.
Embodiment
With reference to accompanying drawing, the present invention is described in further details.
As illustrated in fig. 1 and 2, analog temperature gradient fields of the present invention and automatic loading device, it includes baking oven 1, heating
With refrigeration system 2, temperature sensor 3, pressure sensor 4, servo-pressing machine 5, many gradient pressure feedways 6, solid steel tube
7th, pressurized steel disc 8 and computerized control system 9, the heating and refrigeration system 2 are evenly distributed on the inwall of baking oven 1, temperature
Degree sensor 3 and pressure sensor 4 are embedded in inside baking oven 1, and servo-pressing machine 5 is on the lower section of baking oven 1, servo-pressing machine 5
Portion is provided with many gradient pressure feedways 6, and solid steel tube 7 is located at many lower sections of gradient pressure feedway 6, pressurized steel disc 8
Above sample in baking oven 1, many gradient pressure feedways 6 on the top of servo-pressing machine 5 pass through solid steel tube 7 and part
Pressurization steel disc 8 transfer the pressure in the sample in baking oven 1, computerized control system 9 respectively with heating, refrigeration system, temperature
Degree sensor 3, pressure sensor 4, servo-pressing machine 5, many gradient pressure feedways 6 are electrically connected.
Wherein, heating and refrigeration system 2 are annular setting, and heating and refrigeration system 2 are respectively equipped with and heated
Pipe 10 and refrigerator pipes 11, are heated pipe 10 and refrigerator pipes 11 and are made of lucite Steel material.Heating and refrigeration system 2
Arrangement is alternateed with the height of baking oven 1, circulation loop is constituted with external heat exchange system respectively, heats pipe 10 and refrigerator pipes 11
Diameter is 10mm, heats pipe 10 and the mutual parallel distance of refrigerator pipes 11 between 8mm-10mm.The inwall of baking oven 1 is provided with
Groove, heats pipe 10 and refrigerator pipes 11 are close in groove respectively, and groove surfaces are provided with insulation material layer.The He of temperature sensor 3
Pressure sensor 4 is connected by data collecting instrument with computerized control system 9 respectively.
When specifically used, first soil sample is attached in baking oven 1, reserved one can put down the hole of model, by temperature sensor 3
Relevant position is arranged in as requested with pressure sensor 4, is placed model and then is banketed and the top of baking oven 1 is flattened into compacting,
Next pressurized steel disc 8 is uniformly put into soil sample top, and starts servo-pressing machine 5 so that solid steel tube 7 and part
The steel disc 8 that pressurizes is contacted just, and then embedding temperature sensor 3 and pressure sensor 4 are connected with data collecting instrument, data
Acquisition Instrument is connected with computerized control system 9, checks whole device various pieces, after confirming that each step and instrument state are errorless, opens
The dynamic power supply of computerized control system 9, the pressure and temperature gradient needed for setting, then first starting servo-pressing machine 5 reaches pressure
Arranges value, restarts refrigeration and heating 2 so that temperature is maintained at the temperature gradient conditions set in baking oven 1, now mould
Draft experiment condition has been formed.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (6)
1. a kind of analog temperature gradient fields and automatic loading device, it is characterised in that：It includes baking oven, heating, refrigeration system
System, temperature sensor, pressure sensor, servo-pressing machine, many gradient pressure feedways, solid steel tube, pressurized steel disc
And computerized control system, the heating and refrigeration system are evenly distributed on baking oven inwall, temperature sensor and pressure sensing
Device is embedded in oven interior, and servo-pressing machine is below baking oven, and servo-pressing machine top is provided with many gradient pressure feedways,
Solid steel tube is below many gradient pressure feedways, and pressurized steel disc is above the sample in baking oven, servo pressure
The sample that many gradient pressure feedways on machine top are transferred the pressure in baking oven by solid steel tube and pressurized steel disc
In, computerized control system respectively with heating, refrigeration system, temperature sensor, pressure sensor, servo-pressing machine, more terraced
Spend pressure supply unit electrical connection.
2. a kind of analog temperature gradient fields according to claim 1 and automatic loading device, it is characterised in that：It is described to heat
System and refrigeration system are annular setting, and the heating and refrigeration system, which are respectively equipped with, heats pipe and refrigerator pipes, heats
Pipe and refrigerator pipes are made of lucite Steel material.
3. a kind of analog temperature gradient fields and automatic loading device according to right 2, it is characterised in that：The heating
Arrangement is highly alternateed with baking oven with refrigeration system, respectively with external heat exchange system constitute circulation loop, heat pipe and
Pipe diameter of freezing is 10mm, heats pipe and the mutual parallel distance of refrigerator pipes between 8mm-10mm.
4. a kind of analog temperature gradient fields and automatic loading device according to right 1 or 2, it is characterised in that：The baking oven
Inwall be provided with groove, heat pipe and refrigerator pipes be close in groove respectively, groove surfaces be provided with insulation material layer.
5. a kind of analog temperature gradient fields according to claim 1 and automatic loading device, it is characterised in that：The temperature
Sensor and pressure sensor are connected by data collecting instrument with computerized control system respectively.
6. the application method of a kind of analog temperature gradient fields and automatic loading device, it is characterised in that comprise the following steps：
(1) model that will be studied is put into baking oven first；
(2) temperature sensor is arranged in model outer wall and soil sample from down to up, and passes through wire and data collecting instrument phase
Even, data collecting instrument, which gather, passes to computerized control system and is handled after data, reflection soil each position temperature, in order to and
When adjust；
(3) pressure sensor is arranged in model outer wall and soil sample from down to up, and passes through wire and data collecting instrument phase
Even, data collecting instrument, which gather, passes to computerized control system and is handled after data, reflection soil each position stress state, so as to
In timely adjustment；
(4) soil sample top is flattened and uniformly places pressurized steel disc, many gradients on servo-pressing machine top at an upper portion thereof
Pressure supply unit is transferred the pressure in the sample in baking oven by solid steel tube and pressurized steel disc, makes soil sample local
Uniform stressed, the servo-pressing machine after existing improvement can realize the pressurization of many gradients so that on each pressurized steel disc by
The pressure of different numerical value, and can at any time be adjusted by computer, thus can be with soil stress complicated under simulating natural condition
State；
(5) heating and refrigeration system are started by computerized control system, oven temperature is made by two system coordinations work
Preset temperature is reached, while start servo-pressing machine and set pressure parameter, temperature sensor and pressure sensor feedback letter
Breath, computerized control system receive information controls two systems to carry out feedback regulation, and two systems work independently simultaneously, and all processes are by electricity
Brain control system is automatically controlled, it is achieved thereby that temperature and stress simulation in baking oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710376566.8A CN107271256B (en) | 2017-05-25 | 2017-05-25 | A kind of analog temperature gradient fields and automatic loading device and its application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710376566.8A CN107271256B (en) | 2017-05-25 | 2017-05-25 | A kind of analog temperature gradient fields and automatic loading device and its application method |
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| CN107271256A true CN107271256A (en) | 2017-10-20 |
| CN107271256B CN107271256B (en) | 2019-08-30 |
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| CN109211668A (en) * | 2018-09-20 | 2019-01-15 | 中国矿业大学 | A kind of coal petrography assembly exploitation unloader test device and method |
| CN109856034A (en) * | 2019-03-26 | 2019-06-07 | 哈尔滨工业大学 | A kind of direct measurement experiment system of frozen soil Penetration Signature |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109211668A (en) * | 2018-09-20 | 2019-01-15 | 中国矿业大学 | A kind of coal petrography assembly exploitation unloader test device and method |
| CN109856034A (en) * | 2019-03-26 | 2019-06-07 | 哈尔滨工业大学 | A kind of direct measurement experiment system of frozen soil Penetration Signature |
| CN109856034B (en) * | 2019-03-26 | 2021-09-14 | 哈尔滨工业大学 | Experimental system for directly measuring permeability characteristics of frozen soil |
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| CN107271256B (en) | 2019-08-30 |
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Granted publication date: 20190830 Termination date: 20200525 |