CN107084884A - High pressure low temperature frozen soil pressure loading device - Google Patents
High pressure low temperature frozen soil pressure loading device Download PDFInfo
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- CN107084884A CN107084884A CN201710274138.4A CN201710274138A CN107084884A CN 107084884 A CN107084884 A CN 107084884A CN 201710274138 A CN201710274138 A CN 201710274138A CN 107084884 A CN107084884 A CN 107084884A
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- gate pit
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- loading device
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- 239000002689 soil Substances 0.000 title claims abstract description 46
- 238000007710 freezing Methods 0.000 claims abstract description 21
- 230000008014 freezing Effects 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 238000003780 insertion Methods 0.000 claims abstract description 8
- 230000037431 insertion Effects 0.000 claims abstract description 8
- 230000000740 bleeding effect Effects 0.000 claims abstract description 6
- 238000005191 phase separation Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 239000000428 dust Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000011160 research Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 210000003660 reticulum Anatomy 0.000 description 14
- 230000008859 change Effects 0.000 description 11
- 238000001816 cooling Methods 0.000 description 10
- 238000002591 computed tomography Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
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- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000001558 permutation test Methods 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- 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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0208—Specific programs of loading, e.g. incremental loading or pre-loading
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
High pressure low temperature frozen soil pressure loading device, oil cylinder unit and pressure chamber unit including integral structure, the two is connected by thermal insulation board, pressure chamber unit includes balancing gate pit's part, balancing gate pit's part is provided with steam vent, air bleeding valve is provided with steam vent, around balancing gate pit, part outer wall is provided with helicla flute, balancing gate pit part rear end is provided with balancing gate pit's bottom plate, insertion is provided with specimen clamping auxiliary rod on balancing gate pit's bottom plate, balancing gate pit's part is internally provided with sample cavity volume, sample cavity volume two ends are each provided with a pressure head, the pressure head of sample cavity volume front end is connected with distance rod, distance rod and the first pressure head phase separation, fluid layer and freezing liquid channel layer are disposed with outside sample cavity volume, fluid layer is connected with confined pressure loading device, the freezing liquid passage for keeping specimen temperature is provided with freezing liquid channel layer, heat-insulation unit is provided with the outside of pressure chamber unit, to complete high pressure, it is prolonged accurate under low temperature environment, accurate cyopedology work, suitable for frozen soil experiment research.
Description
Technical field
The invention belongs to technical field of civil engineering, it is related to a kind of high pressure low temperature frozen soil pressure-loaded supporting with CT and fills
Put.
Background technology
Frozen soil refers to below zero degrees celsius, and various rocks and soil containing ice, with rheological characteristic, temperature sensitivity etc.
Feature, is typically distributed about high latitude area and high mountain belt top.Because mankind's activity has focused largely on warm regional or low sea
Flat-bottomed land is pulled out, so the understanding for frozen soil is not a lot, but expansion with mankind's activity space and resource is needed
That asks increases, and the mankind have gradually turned one's attention to space, ocean and permafrost region.The frozen soil of China can be divided into seasonal frozen ground and for many years
Frozen soil, wherein seasonal frozen ground are accounted for more than Chinese territory half of the area, and the ever-frozen ground point gross area is the 1/5 of national territory area.
With the development of society and technology, the engineering carried out in permafrost region also gradually increases, it is therefore desirable to which the property to frozen soil is carried out deeply
Enter research.
Study frozen soil property when optimal sample be original state frozen soil, however, frozen soil to soil temperature, water content, dry density,
Pressure and other parameters are very sensitive, and mercury injection method that frozen soil of the prior art is studied, microscopic section method, ESEM plated film
All there is limitation in method, X-ray diffraction method, the examination to preparing to supercritical ultrasonics technology, computed tomography (CT technologies)
Sample produces disturbance, it is impossible to real-time change of the thin microstructure of actual response inside soil body under outside environmental activity.Wherein, most manage
The method thought be using computed tomography (CT technologies) to frozen soil carry out observational study, this method need with CT machines
Supporting pressure chamber is monitored to frozen soil.Existing pressure chamber is temperature control pressure chamber, but it is separate structure, is swept using CT
Technology is retouched to being carried out on the three-axis tester with temperature-controlling system to detection of the frozen soil during temperature change or load-bearing
Mechanical test, when experiment proceeds to some stage, then sample is taken out is put into CT scan system and is scanned, so cause
During taking-up is put into, due to the influence of ambient temperature so that small change occurs for the temperature of sample, easily to sweeping
Retouch and disturbed, the accuracy and reliability of strong influence result of the test, and low-temperature condition can not be kept for a long time, it is impossible to it is real
Operation under existing stable high voltage, precision is low, has limitation to the research of frozen soil, it is impossible to carry out macrocyclic research work.It is existing
Low temperature frozen soil triaxial cell include with lower component：Confined pressure system, axle pressure system, temperature control system, whole equipment are designed as erecting
To fixed equipment, size is very big, and pressure wall is very thick, it is impossible to which realization carries out CT scan in loading.In order to overcome above technology
Problem, needs a kind of high pressure low temperature frozen soil pressure loading device for meeting CT tomoscans badly.
The content of the invention
The technical problems to be solved by the invention are that there is provided a kind of high pressure low temperature frozen soil pressure in order to overcome above-mentioned technical problem
Force loading device, the apparatus structure size is small, being capable of horizontal positioned, it is easy to mobile, can be used in combination with CT equipment, can be complete
Into the cyopedology work under high pressure and/or long-time low temperature environment, the data result degree of accuracy and accuracy are high.
The technical solution adopted for the present invention to solve the technical problems is：High pressure low temperature frozen soil pressure loading device, including
The oil cylinder unit and pressure chamber unit of integral structure, oil cylinder unit include hydraulic cylinder end cover, cylinder barrel and hydraulic cylinder bonnet, three
Around cylinder in be provided with piston component, piston component is connected with piston rod, and piston rod is extended by hydraulic cylinder end cover
To outside cylinder, piston component bottom is connected with one end of connecting portion, is covered after hydraulic cylinder and is provided with M hydraulic fluid ports, hydraulic cylinder bonnet
Rear end is connected with pressure sensor unit, and pressure sensor unit includes sensor casing, sensor casing afterbody and casing seat
It is connected, is formed between hydraulic cylinder bonnet, sensor casing and casing seat in placement accommodating cavity, accommodating cavity and be placed with pressure testing machine
Sensor and the sensor holder for carrying the sensor, sensor holder are connected with the other end of connecting portion, pressure testing machine sensor
Rear end is connected with the first pressure head, and oil cylinder unit also includes oil inlet and oil-out, and pressure chamber unit includes balancing gate pit's part, balancing gate pit
Part is provided with steam vent, steam vent and is provided with air bleeding valve, and balancing gate pit part front end is fixed on into thermal insulation board by fastening plates, heat-insulated
The opposite side of plate is connected with casing seat rear side, is provided with outer shell on the outside of balancing gate pit's part, balancing gate pit part rear end is provided with balancing gate pit bottom
Insertion is provided with specimen clamping auxiliary rod on plate, balancing gate pit's bottom plate, and balancing gate pit's part is internally provided with sample cavity volume, sample cavity volume two
End is each provided with a pressure head, and the pressure head of sample cavity volume front end is connected with distance rod, distance rod and the first pressure head phase separation, sample
Fluid layer and freezing liquid channel layer are disposed with outside cavity volume, fluid layer is connected with confined pressure loading device, in freezing liquid channel layer
The freezing liquid passage for keeping specimen temperature is provided with, pressure chamber unit is additionally provided with confined pressure sensor and TEMP
Device, is provided with heat-insulation unit, confined pressure loading device is using digital servo voltage stabilizing oil sources to confined pressure on the outside of pressure chamber unit
Axle pressure is loaded using digital servo voltage stabilizing Oil-source control high precision oil cylinder from motion tracking voltage stabilizing, oil cylinder unit
From motion tracking voltage stabilizing.
Specifically, also include processor, temperature sensor, pressure testing machine sensor and confined pressure sensor respectively with processing
Device is connected, in addition to the display device being connected with processor.
Specifically, cylinder ends cover the displacement sensing for being extended and having for carrying fixed displacement sensor along its front end
Device seat, displacement transducer is grating displacement meter, and displacement transducer is connected with processor, in addition to the position being connected with displacement transducer
Displacement sensor shows table.
It is preferred that, in addition to the vibrating sensor and coupled alarm being connected respectively with processor, vibration biography
Sensor is connected with pressure chamber unit, when the vibration parameters of detection exceed certain threshold value, and processor control alarm sends alarm.
Specifically, sealing ring is provided with the inside of hydraulic cylinder end cover and on the inside of piston space and hydraulic cylinder bonnet between connecting portion,
On the outside of cylinder ends outer side of lid and piston space and hydraulic cylinder bonnet dust ring is additionally provided between connecting portion.
It is preferred that, oil cylinder unit, pressure chamber unit and heat-insulation unit are integrated.
Further, in addition to supporter, supporter includes being provided with front support seat and rear support seat on base, base,
Pressure sensor unit is fixed on front support seat and rear support seat by straight pin.
Specifically, freezing liquid passage include be sequentially connected water inlet, circulation canal, sluice, helicla flute, backwater road and
Delivery port, water inlet and delivery port respectively with pressure chamber unit ft connection, helicla flute around balancing gate pit's part outer wall set, pressure
Chamber unit is additionally provided with crosses line mouthful for line of arranging.
Specifically, freezing liquid passage includes first passage and second channel, first passage includes the first water inlet, the successively
One circulation canal, the first helicla flute, the first backwater road and the first delivery port, second channel include the second water inlet, second successively
Circulation canal, sluice, the second helicla flute, the second backwater road and the second delivery port, the first backwater road and the second backwater road are mutual
Come independently and by baffle interval, the first delivery port, the first water inlet, the second water inlet, the second delivery port insertion are arranged on pressure
On the bottom plate of power room.
Further, balancing gate pit's part includes the identical symmetrically arranged upper and lower part of structure, upper and lower part connection end
Between be provided with specimen clamping auxiliary rod, top is in the structure of falling Z-shaped.
The beneficial effects of the invention are as follows：Reasonable in design, can be with horizontal positioned using integral structure, it is easy to mobile,
Can realize that frozen soil undisturbed is monitored in real time, prevent frozen soil from being influenceed by ambient temperature, can for a long time in low temperature and
Tested under hyperbaric environment, improve the accuracy and precision of result of the test, be easy to movement, simple to operate, performance is stable, adopts
Up to 10MPa confined pressure can be realized with digital servo voltage stabilizing oil sources, for existing Refrigeration Technique, using mutually solely
Vertical freezing liquid passage design, high cooling efficiency can realize that balancing gate pit works long hours in -20 DEG C -30 DEG C of temperature range
It is interior, and without having to worry about the validity of sensor gathered data is influenceed under low temperature environment, the upper and lower plates temperature difference can be carried out no more than 0.1
DEG C high accuracy temperature control；Further, since the physical dimension of the application is small, CT scan internal diameter size, non-pressurised end disclosure satisfy that
Use bolt and fix bearing load, can be with the wall thickness of control pressure room so that the wall of balancing gate pit is very thin so that CT scan
Ray penetrates the wall of balancing gate pit；And alarm can be sent when vibration interference exceedes certain threshold value, so as to exact test,
Use manpower and material resources sparingly, reduce cost.The present invention is applied to frozen soil experiment research.
Brief description of the drawings
Fig. 1 is of the invention bows to structural representation；
Fig. 2 is the lateral structure schematic diagram of the present invention；
Fig. 3 is the rearview of the present invention；
Fig. 4 is Fig. 1 of the present invention Section A-A schematic diagram；
Fig. 5 is Fig. 1 of the present invention C direction views；
Fig. 6 is Fig. 2 of the present invention section B-B schematic diagram；
Fig. 7 is that oil cylinder unit is bowed to structural representation in the present invention；
Fig. 8 is the lateral view of oil cylinder unit in the present invention；
Fig. 9 is Fig. 7 of the present invention C direction views；
Figure 10 is that pressure chamber unit is bowed to structural representation in the present invention；
Figure 11 is the lateral structure schematic diagram of pressure chamber unit in the present invention；
Figure 12 is Figure 10 of the present invention C direction views；
Figure 13 is the rearview of pressure chamber unit；
Wherein, 1. piston rod, 2. first screws, 3. hydraulic cylinder end covers, 4. cylinder barrels, 6. hydraulic cylinder bonnets, 7. sensor holders,
8. pressure testing machine sensor, 9. sensor casings, 10. casings seat, 11. thermal insulation boards, 12. cooling cylinder pressing plates, 13. fastening plates,
14. balancing gate pit's part, 15. outer shells, 17. water out adapters, 18. balancing gate pit's bottom plates, 19. specimen clamping auxiliary rods, 20. left pressure heads, 21.
Sample cavity volume, 22. sealing rings, 26 be base, 27. rear supports seat, 28. straight pins, 30. front supports seat, 31. right pressure heads, 37.
Displacement sensor seat, 39. dust rings, 44. first pressure heads, 45. distance rods, 47. swivel joints, 48. heat-insulation units, 50. balancing gate pits
End cap, 51. levers, 52. lever seats, 53. straight pins, 54. porous discs, 56. cylinder connectors, 57. gasket seals, 58 be hydraulic fluid port,
100.M hydraulic fluid ports, 101. first delivery ports, 102. first water inlets, 103. first mistake lines mouthful, 104. helicla flutes, 105. sluices,
106. the first backwater road, 107. steam vents, 108. first circulation passages, 201. second delivery ports, 202. second water inlets, 203.
Second mistake line mouthful, 206. second backwater roads, 208. second circulation passages, 301. enter oil outlet, 302. dividing plates, 303. oil return openings.
Embodiment
Below in conjunction with the accompanying drawings, technical scheme is described in detail.
In this application with left side in scheming for front end, right side is rear end or afterbody.In the drawing of the present application, in order to
Part position relations are clearly expressed, the hiding section components in part are subjected to specially treated, are plotted on figure.So that its is visual.
As shown in figures 1 to 6, oil cylinder unit is integrated the apparatus structure of the present invention with pressure chamber unit, can reduce
External interference, overcomes the shortcoming of separate structure in the prior art, and physical dimension is small, disclosure satisfy that CT scan internal diameter size, non-
Pressurization end uses bolt and fixes bearing load, can be with the wall thickness of control pressure room so that the wall of balancing gate pit is very thin so that
The ray of CT scan penetrates the wall of balancing gate pit, to meet the requirement of CT tomoscans, more preferably decision design oil cylinder unit,
Pressure chamber unit and heat-insulation unit are integrated.High pressure low temperature frozen soil balancing gate pit uses aluminum alloy materials.
Such as Fig. 7-9, oil cylinder unit includes oil cylinder module and load transducer module, oil cylinder module include hydraulic cylinder end cover 3,
The position having for carrying fixed displacement sensor is extended on cylinder barrel 4 and hydraulic cylinder bonnet 6, hydraulic cylinder end cover 3 along its front end
Displacement sensor seat 37, displacement transducer is grating displacement meter, preferably reflective gratings, and the precision of grating displacement meter is high, displacement
Integrated measurement accuracy 50mm, precision 0.1%F.S, in addition to it is arranged on connecting with displacement transducer above hydra-electric switch board
The grating displacement meter display table connect, can intuitively observe and learn displacement data.Oil cylinder module is used for loading axis pressure.
Hydraulic cylinder end cover 3 is fixed on cylinder barrel 4 by the first screw 2, is considered based on fixed force, preferably high-strength interior hexagonal circle
Chapiter screw, the region that hydraulic cylinder end cover 3, cylinder barrel 4 and hydraulic cylinder bonnet 6 are surrounded is to be provided with piston in cylinder, cylinder
Component, piston component is connected with piston rod 1, and piston rod 1 is extended to outside cylinder by hydraulic cylinder end cover 3, piston component bottom
It is connected with connecting portion, connecting portion is on the rectangular area being connected in cylinder barrel 44 with hydraulic cylinder bonnet 6 in Fig. 1, hydraulic cylinder bonnet 6
M hydraulic fluid ports 100 are provided with, the need for M hydraulic fluid ports 100 can be according to actual conditions, are selected as after oil inlet or oil-out, hydraulic cylinder
The rear end of lid 6 is connected with pressure sensor unit, and pressure sensor unit includes sensor casing 9, the afterbody of sensor casing 9 and shield
Cylinder base 10 is connected, and sensor casing 9 is fixed on the rear end of hydraulic cylinder bonnet 6, hydraulic cylinder bonnet 6, sensor casing 9 and casing seat 10
Between formed and place accommodating cavity, pressure testing machine sensor 8 is placed with accommodating cavity with carrying the sensor holder 7 of the sensor,
Sensor holder 7 is connected with connecting portion, pressure testing machine sensor 8 is fixed on sensor holder 7 by the first screw 2, pressure
Testing machine sensor 8 can select SVSL-XS-20T models, and precision is high.The rear end of pressure testing machine sensor 8 is connected with perception pressure
First pressure head 44 of power, oil cylinder unit also includes being provided with cylinder connector 56 at oil inlet and oil-out, oil inlet and oil-out,
Axial pressure is completed by oil cylinder unit.
Sealed volume in oil cylinder unit bears oil pressure effect, and therefore, housing assembly will have enough intensity, higher table
Face precision and reliable sealing.To prevent fluid from being leaked to hydraulic cylinder external leakage or from high pressure chest to low pressure chamber, cylinder barrel with
Sealing device is provided between end cap, piston and piston rod, piston and cylinder barrel, piston rod and drive end bearing bracket etc., in drive end bearing bracket
Outside etc., is also equipped with dust guard, such as Fig. 8, the inner side of hydraulic cylinder end cover 3 and piston space and the inner side of hydraulic cylinder bonnet 6 with
Sealing ring 22 is provided between connecting portion, is also set between the outside of hydraulic cylinder end cover 3 and piston space and the outside of hydraulic cylinder bonnet 6 and connecting portion
Dust ring 39 is equipped with, can so increase sealing, reduction interference improves the degree of accuracy and accuracy.Sealing device is preferably O shapes
Sealing ring.The section of O-ring seals is circle, can realize static seal and speed is relatively low is slidingly sealed, simple compact, is installed
It is convenient, it is cheap, it can be worked within the temperature range of -40~120 DEG C.When without hydraulic coupling, by the elastic to contact of O-ring
Face produces pre-terminated touch pressure, realizes initial sealing, and after annular seal space charged pressure is oily, in the presence of hydraulic coupling, O-ring is pressed to
Contact on groove side, sealing surface rises, and improves sealing effectiveness.In order to ensure sealing effectiveness, in dynamic sealing, work as pressure
Power be more than 10MPa when, O-ring will be squeezed into gap and damage, be this need to O-ring low-pressure side setting polytetrafluoroethylene (PTFE) or
The back-up ring that nylon is made, its thickness be 1.3~2.4mm, it is two-way by high pressure when, both sides will add back-up ring.In order to prevent piston fast
Speed hits cylinder cap when returning to stroke terminal, cylinder ends are additionally provided with buffer unit, prevents from damaging cylinder body, also needs to set sometimes
Exhaust apparatus is put, the device that such as top of hydraulic cylinder end cover 3 is set in the figure 7 is exactly exhaust apparatus.
Such as Figure 10-13, pressure chamber unit includes balancing gate pit's part 14, and balancing gate pit's part 14 is provided with steam vent 107, steam vent
107 are connected with fluid layer, and air bleeding valve is provided with steam vent 107, by controlling air bleeding valve to control whether to carry out from steam vent
Bleeding.The front end of balancing gate pit's part 14 is fixed on thermal insulation board 11 by fastening plates 13, thermal insulation board 11 and balancing gate pit's part 14 it
Between be additionally provided with cooling cylinder pressing plate 12, cooling cylinder pressing plate 12 can quickly carry out temperature conduction, the opposite side and casing of thermal insulation board 11
The rear side of seat 10 is connected, and thermal insulation board uses nylon sheet, with low cost, and thermal insulation effect is good.The outside of balancing gate pit's part 14 is provided with outer shell 15,
Outer shell is cooling cylinder.The rear end of balancing gate pit's part 14, which is provided with insertion on balancing gate pit's bottom plate 18, balancing gate pit's bottom plate 18 and is provided with, to be used for
The specimen clamping auxiliary rod 19 of auxiliary clamping sample.Balancing gate pit's part 14 includes the identical symmetrically arranged upper and lower part of structure, on
Portion and bottom connection end are provided with specimen clamping auxiliary rod 19, and top is in the structure of falling Z-shaped as illustrated, Z-shaped inversely revolves
Turn 90 ° of structure, according to direction in figure, its right side is its front end；It is so designed that, tightness is good, it is easy to change and repair, when
It is cost-effective when top is damaged, it is only necessary to change top.Balancing gate pit's part 14 includes the identical symmetrically arranged top of structure with
Portion, upper and lower part connection end is provided with specimen clamping auxiliary rod 19, and top is in the structure of falling Z-shaped as illustrated, Z-shaped is inverse
To the structure being rotated by 90 °, according to direction in figure, its right side is its front end；It is so designed that, tightness is good, it is easy to change and tie up
Repair, it is cost-effective when top is damaged, it is only necessary to change top.
Balancing gate pit's part 14 is internally provided with sample cavity volume 21, and the two ends of sample cavity volume 21 are each provided with a pressure head, it is specific and
Speech, the rear end of sample cavity volume 21 is provided with left pressure head 20, and front end is provided with right pressure head 31, is provided between left pressure head 20 and sample cavity volume
Porous disc 54, the right front end of pressure head 31 is connected with distance rod 45, the phase separation of 45 and first pressure head of distance rod 44.Sample cavity volume 21 it is outer according to
Secondary to be provided with fluid layer and freezing liquid channel layer, fluid layer is connected with confined pressure loading device, and confined pressure loading device includes being arranged on
The confined pressure of balancing gate pit's unit sidepiece is entered valve and switched with confined pressure removal (draining the oil or oil return), for adjusting confined pressure.Freezing liquid passage
It is provided with freezing liquid passage for keeping specimen temperature in layer, water inlet that freezing liquid passage includes being sequentially connected, circulation are led to
Road, sluice, helicla flute, backwater road and delivery port, helicla flute 104 set helicla flute to be followed for cooling around the outer wall of balancing gate pit's part 14
Annular groove, its position is preferably distributed at the rear end of balancing gate pit's part 14.Water inlet and delivery port respectively with outside pressure chamber unit
Connection, water out adapter is connected with delivery port, such as in Figure 10, and water out adapter 17 is connected with the first delivery port 101, pressure chamber unit
It is additionally provided with and crosses line mouthful, confined pressure sensor and temperature sensor, temperature sensor for the part circuit such as sensor of arranging
It can be arranged at balancing gate pit's end cap 50 or other positions, insertion is provided with first and crosses line mouthful 103 such as on balancing gate pit's bottom plate 18,
In order that must connect up rationally uniform, it is additionally provided with second and crosses line mouthful 203.Heat-insulation unit is provided with the outside of pressure chamber unit
48, the stay-warm case that heat-insulation unit 48 can be made of plastic foam, each above-mentioned pressure head is all heat-insulated pressure head, to reduce to freezing
The influence of soil temperature degree.Also include the temperature indicating device being connected with temperature sensor, so that operating personnel can be in time according to aobvious
The water temperature for entering system is adjusted the temperature shown so that temperature meets sample environmental requirement.
Confined pressure is carried out using digital servo voltage stabilizing oil sources to use digital servo from motion tracking voltage stabilizing, oil cylinder unit
Voltage stabilizing Oil-source control high precision oil cylinder is loaded from motion tracking voltage stabilizing to axle pressure, and digital servo voltage stabilizing oil sources can realize this
The high voltage functionality of application.The high pressure low temperature frozen soil balancing gate pit being so designed that can form up to 10.0MPa high-potting environment.
Also include processor, processor and temperature sensor, pressure testing machine sensor 8 and confined pressure sensor in the device
It is connected respectively with processor, in addition to the display device being connected to processor is in order to showing corresponding above-mentioned data so that operate
Personnel follow up the situations of parameters in time.In the apparatus axle is directed to using fluid rather than cylinder control high precision oil cylinder
Pressure, confined pressure be adjusted, and the pressure measured by pressure test sensor, displacement transducer are measured shift value, confined pressure pass
The confined pressure data transfer that sensor is measured is handled and shown to processor.Processor is handled and shown to corresponding data,
Processor can also be connected with digital servo voltage stabilizing oil sources, and axle is pressed by digital servo voltage stabilizing oil sources and confined pressure is carried out certainly
Dynamic control.In specific experiment, temperature control is carried out first, and after-applied confined pressure, while noting control temperature；Then apply
Axle pressure, is handled corresponding data using processor always while adjusting in temperature, whole process, and control shaft is pressed and enclosed
Pressure.Further, it is also possible to show volume change using digital servo voltage stabilizing oil sources, volume change can change according to oil mass
(oily to be calculated into and out of volume) is directly obtained, without using sensor.
Freezing liquid passage includes first passage and second channel, and first passage and second channel are separate and by between dividing plate
Separate and, so as to need two ends temperature it is different when, can independent Control Assay two ends top (outer) portion temperature.It can set
Freezing liquid passage includes the water inlet, circulation canal, sluice, helicla flute, backwater road and the delivery port that are sequentially connected, water inlet and
Delivery port respectively with pressure chamber unit ft connection.In addition, the application also proposes following design, the first delivery port 101, first enter
The mouth of a river 102, the second delivery port 201, the insertion of the second water inlet 202 are set on balancing gate pit's bottom plate 18, and water source 1 passes through the first water inlet
102 enter left side, are circulated in left side, by first circulation passage 108 after circulation, into the spiral of cooling cylinder left half
Groove, when being recycled to the centre position of cooling cylinder, into the first backwater road 106, is then gone out by the first backwater road 106 from first
The mouth of a river 101 comes out, and completes left circulation.2nd, water source 2 is circulated by the second water inlet 202 into right side.Pass through mistake after circulation
Water channel 105, into the helicla flute of cooling cylinder right half, into second circulation passage 208, when the centre position for being recycled to cooling cylinder
When, into the second backwater road 206, then come out by the second backwater road 206 from 2 delivery ports, complete right circulation, the first backwater road
106 and second backwater road 206 be independent, centre dividing plate 302 is separated, as shown in Figure 6.It is so designed that, when can realize long
Between be in low-temperature condition, it is ensured that frozen soil performance and structure, improve measurement result the degree of accuracy, balancing gate pit's operating temperature is effectively ensured
- 20 DEG C of scope -30 DEG C；The upper and lower plates temperature difference is no more than 0.1 DEG C.
In order to keep sealing, joint is provided with gasket seal 57 with system junction.Swivel joint 47 is set with facility
In commissioning device, fluid is passed through by entering oil outlet 301 and oil return opening 303, in order to simplify equipment, can also be set into oil outlet
301 be same hole with oil return opening 303, and such as 58 be hydraulic fluid port, usually oil-feed, but can also be fuel-displaced.
After obtained soil sample is put into the device of the present invention, it is not necessary to which more changing device can realize frozen soil outside back and forth again
CT scan under load and temperature change, accomplishes that undisturbed is monitored in real time, and frozen soil need not be influenceed by ambient temperature, and
It can be tested for a long time under low temperature and hyperbaric environment, result of the test accuracy is higher with reliability, is low temperature and high pressure
Cyopedology provides abundant data under environment.
In order to further improve the degree of accuracy of result, the device also include the vibrating sensor that is connected respectively with processor and
Alarm, vibrating sensor is connected with pressure chamber unit, when the vibration parameters of detection exceed certain threshold value, processor control report
Alert device sends alarm, reminds operating personnel to note the interference of vibration, can again be tested after eliminating vibration interference factor,
Improve result accuracy.
In order to improve ease of use, stability is improved, the device also includes supporter, and supporter includes base 26, preceding
Support base 30 and rear support seat 27 are fixed on base plate 26 using the first screw 2 respectively, and pressure sensor unit passes through straight pin
28 are fixed on front support seat 30 and rear support seat 27.In order that obtaining the device is easy to movement, ten thousand can be set in base bottom
To wheel, locking member can also be set on universal wheel, waits and is moved to ad-hoc location, locking member, fixed high pressure low temperature is pinned
Frozen soil balancing gate pit, when band needs to move, unblock locking member is that may move, and improves ease of use.
In order to easily realize moving horizontally for equipment, the bottom of the system is also associated with lever 51, and the lever 51 leads to
Straight pin 53 is crossed to be fixed on lever seat 52.Similarly, dolly can also be added, the system is fixed on dolly and moved.
In addition it is also possible to dolly or lever not used, directly by manually lifting mobile the system.
Claims (10)
1. high pressure low temperature frozen soil pressure loading device, it is characterised in that oil cylinder unit and balancing gate pit including integral structure are single
Member,
Oil cylinder unit includes setting in hydraulic cylinder end cover (3), cylinder barrel (4) and hydraulic cylinder bonnet (6), the cylinder that three surrounds
There is piston component, piston component is connected with piston rod (1), and piston rod (1) is extended to outside cylinder by hydraulic cylinder end cover (3),
Piston component bottom is connected with connecting portion, and M hydraulic fluid ports (100) are provided with hydraulic cylinder bonnet (6), and hydraulic cylinder bonnet (6) rear end connects
Pressure sensor unit is connected to, pressure sensor unit includes sensor casing (9), sensor casing (9) afterbody and casing seat
(10) it is connected, is formed to place between hydraulic cylinder bonnet (6), sensor casing (9) and casing seat (10) and put in accommodating cavity, accommodating cavity
It is equipped with pressure testing machine sensor (8) and connects with carrying the sensor holder (7) of the sensor, pressure testing machine sensor (8) rear end
The first pressure head (44) is connected to, oil cylinder unit also includes oil inlet and oil-out,
Pressure chamber unit includes balancing gate pit's part (14), and balancing gate pit's part (14) is provided with steam vent (107), and steam vent (107) place is set
Be equipped with air bleeding valve, balancing gate pit's part (14) front end be fixed on thermal insulation board (11) by fastening plates (13), thermal insulation board (11) it is another
Side is provided with outer shell (15) with being connected on rear side of casing seat (10) on the outside of balancing gate pit's part (14), balancing gate pit's part (14) rear end is set
There is insertion on balancing gate pit's bottom plate (18), balancing gate pit's bottom plate (18) to be provided with specimen clamping auxiliary rod (19), balancing gate pit's part (14)
Portion is provided with sample cavity volume (21), and sample cavity volume (21) two ends are each provided with a pressure head, the pressure head of sample cavity volume (21) front end
It is connected with distance rod (45), distance rod (45) and the first pressure head (44) phase separation, sample cavity volume (21) are disposed with fluid outside
Layer and freezing liquid channel layer, fluid layer are connected with confined pressure loading device, are provided with freezing liquid channel layer for keeping sample temperature
The freezing liquid passage of degree, pressure chamber unit is additionally provided with confined pressure sensor and temperature sensor, on the outside of pressure chamber unit
Heat-insulation unit (48) is provided with, confined pressure loading device is carried out from motion tracking voltage stabilizing using digital servo voltage stabilizing oil sources to confined pressure,
Axle pressure is loaded from motion tracking voltage stabilizing using digital servo voltage stabilizing Oil-source control high precision oil cylinder in oil cylinder unit.
2. high pressure low temperature frozen soil pressure loading device as claimed in claim 1, it is characterised in that also including processor, temperature
Sensor, pressure testing machine sensor (8) and confined pressure sensor are connected with processor respectively, in addition to be connected with processor it is aobvious
Showing device.
3. high pressure low temperature frozen soil pressure loading device as claimed in claim 1, it is characterised in that edge on hydraulic cylinder end cover (3)
Its front end is extended the displacement transducer seat (37) having for carrying fixed displacement sensor, and displacement transducer is pattern displacement
Meter, displacement transducer is connected with processor, in addition to the displacement transducer display table being connected with displacement transducer.
4. the high pressure low temperature frozen soil pressure loading device as described in right wants 3, it is characterised in that also including respectively with processor phase
Vibrating sensor and alarm even, vibrating sensor is connected with pressure chamber unit, when the vibration parameters of detection exceed certain threshold
During value, processor control alarm sends alarm.
5. high pressure low temperature frozen soil pressure loading device as claimed in claim 1, it is characterised in that on the inside of hydraulic cylinder end cover (3)
With piston space and hydraulic cylinder bonnet (6) inner side being provided with sealing ring (22), hydraulic cylinder end cover (3) outside and piston between connecting portion
Between and hydraulic cylinder bonnet (6) on the outside of connecting portion between be additionally provided with dust ring (39).
6. high pressure low temperature frozen soil pressure loading device as claimed in claim 3, it is characterised in that oil cylinder unit, balancing gate pit are single
Member and heat-insulation unit are integrated.
7. high pressure low temperature frozen soil pressure loading device as claimed in claim 1, it is characterised in that also including supporter, support
Body includes being provided with front support seat (30) and rear support seat (27) on base (26), base (26), and pressure sensor unit passes through
Straight pin (28) is fixed on front support seat (30) and rear support seat (27).
8. high pressure low temperature frozen soil pressure loading device as claimed in claim 1, it is characterised in that freezing liquid passage is included successively
Water inlet, circulation canal, sluice, helicla flute, backwater road and the delivery port of connection, water inlet and delivery port respectively with balancing gate pit
Unit ft connection, helicla flute (104) is set around balancing gate pit's part (14) outer wall, and pressure chamber unit is additionally provided with for arranging
The line mouthful excessively of line.
9. high pressure low temperature frozen soil pressure loading device as claimed in claim 1, it is characterised in that the freezing liquid passage includes
First passage and second channel, first passage successively include the first water inlet, first circulation passage, the first helicla flute, first time
Water channel and the first delivery port, second channel include the second water inlet, second circulation passage, sluice, the second helicla flute, the successively
Two backwater roads and the second delivery port, the first backwater road and the second backwater road are separate and are come by baffle interval, the first water outlet
Mouth (101), the first water inlet (102), the second water inlet, the second delivery port insertion are arranged on balancing gate pit's bottom plate (18).
10. high pressure low temperature frozen soil pressure loading device as claimed in claim 1, it is characterised in that balancing gate pit's part (14) includes
Specimen clamping auxiliary rod (19) is provided between the identical symmetrically arranged upper and lower part of structure, upper and lower part connection end,
Top is in the structure of falling Z-shaped.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060852A (en) * | 2018-08-24 | 2018-12-21 | 中国科学院寒区旱区环境与工程研究所 | A kind of osmosis device and the real time scan device for cooperating Medical CT |
| WO2019106640A1 (en) * | 2017-12-01 | 2019-06-06 | Universita' Degli Studi Di Roma "Tor Vergata" | Test machine for characterizing artificially frozen soil |
| CN109900548A (en) * | 2019-03-22 | 2019-06-18 | 崔凯 | A kind of low temperature frozen soil triaxial apparatus |
| CN111103200A (en) * | 2019-12-05 | 2020-05-05 | 太原理工大学 | Real-time loading heating leaching test device in CT scanning process |
| US11333591B2 (en) * | 2018-02-02 | 2022-05-17 | China University Of Mining And Technology | Tri-axial mechanical test apparatus and method for simulating the process of freezing high-pressure water into ice |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609587A (en) * | 2004-08-10 | 2005-04-27 | 中国科学院寒区旱区环境与工程研究所 | Low-temperature high-pressure three-axle creep testing instrument |
| CN105890975A (en) * | 2016-06-19 | 2016-08-24 | 中国科学院寒区旱区环境与工程研究所 | Supporting frame of triaxial frozen earth loading device for medical CT (computed tomography) |
-
2017
- 2017-04-25 CN CN201710274138.4A patent/CN107084884B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609587A (en) * | 2004-08-10 | 2005-04-27 | 中国科学院寒区旱区环境与工程研究所 | Low-temperature high-pressure three-axle creep testing instrument |
| CN105890975A (en) * | 2016-06-19 | 2016-08-24 | 中国科学院寒区旱区环境与工程研究所 | Supporting frame of triaxial frozen earth loading device for medical CT (computed tomography) |
Non-Patent Citations (5)
| Title |
|---|
| BHREASAIL, AN等: "In-Situ Observation of Cracks in Frozen Soil using Synchrotron Tomography", 《PERMAFROST AND PERIGLACIAL PROCESSES》 * |
| J.K. TORRANCE等: "X-ray computed tomography of frozen soil", 《COLD REGIONS SCIENCE AND TECHNOLOGY》 * |
| 任建喜等: "CT检测技术在岩石加卸载破坏机理研究中的应用", 《冰川冻土》 * |
| 毛灵涛等: "基于工业CT力学实验平台的建立及应用", 《CT 理论与应用研究》 * |
| 郑剑锋等: "与CT机配套的便携式控温压力舱的研制与应用", 《冰川冻土》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019106640A1 (en) * | 2017-12-01 | 2019-06-06 | Universita' Degli Studi Di Roma "Tor Vergata" | Test machine for characterizing artificially frozen soil |
| US11333591B2 (en) * | 2018-02-02 | 2022-05-17 | China University Of Mining And Technology | Tri-axial mechanical test apparatus and method for simulating the process of freezing high-pressure water into ice |
| CN109060852A (en) * | 2018-08-24 | 2018-12-21 | 中国科学院寒区旱区环境与工程研究所 | A kind of osmosis device and the real time scan device for cooperating Medical CT |
| CN109060852B (en) * | 2018-08-24 | 2020-06-09 | 中国科学院寒区旱区环境与工程研究所 | Pressurization and permeation device and real-time scanning device matched with medical CT |
| CN109900548A (en) * | 2019-03-22 | 2019-06-18 | 崔凯 | A kind of low temperature frozen soil triaxial apparatus |
| CN109900548B (en) * | 2019-03-22 | 2020-12-11 | 崔凯 | Low-temperature frozen soil triaxial apparatus |
| CN111103200A (en) * | 2019-12-05 | 2020-05-05 | 太原理工大学 | Real-time loading heating leaching test device in CT scanning process |
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|---|---|
| CN107084884B (en) | 2020-06-19 |
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