CN106370815B - A kind of swollen experiment humidity control method of salt - Google Patents
A kind of swollen experiment humidity control method of salt Download PDFInfo
- Publication number
- CN106370815B CN106370815B CN201610824404.1A CN201610824404A CN106370815B CN 106370815 B CN106370815 B CN 106370815B CN 201610824404 A CN201610824404 A CN 201610824404A CN 106370815 B CN106370815 B CN 106370815B
- Authority
- CN
- China
- Prior art keywords
- salt
- sample
- swollen
- circulation fluid
- experiment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Automation & Control Theory (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of swollen experiment humidity control methods of salt, the swollen experiment of salt is carried out using the swollen tester of salt in this method, it is characterized in that, when experiment, by being connected by the pipeline connected with water source inside the swollen tester inner cylinder of salt, humidification control is carried out to sample soil, is connected into the air dried cell being arranged on tube inner chamber inner wall in the swollen tester of salt by the pipeline connected with wind regime, sample soil is carried out to air-dry control.The present invention can realize more environment parameter controls, improve test simulation effect, have and implement simple, and test accuracy is high, and sample parameter is flexibly adjustable, advantage that can be more than test method, be highly suitable for the research to salinized soil performance.
Description
Technical field
Research field is endangered the present invention relates to salt marsh earth salt is swollen, and in particular to a kind of swollen experiment humidity control method of salt.
Background technology
Salinized soil isSolonchakWithAlkaline earthAnd various salinization,Alkali-affected soilGeneral name.Solonchak refers to soluble-salt in soil
Content, which reaches to have a plant growth, significantly to endangerGreat soil group.Salt content index is different due to different salinity compositions.Alkaline earth refers to soil
Volume exchangeable sodium containing harmful plant growth and change soil property in earth.Salinized soil be mainly distributed on inland arid,Half Arid area, coastal region is also distributed.About 897.0 ten thousand square kilometres of whole world salinized soil area meter, it is total to account for about world land
The 6.5% of area accounts for the 39% of the arid biogeographic zone gross area.Chinese salinized soil area accounts for about the total face in territory there are about more than 20 ten thousand square kilometres
Long-pending 2.1%.The salt of salinized soil is swollen to lead to ground bulging, and the constructure grounds such as highway, airport, house is caused to generate bulge, open
Split equal engineering diseases；Road, pipeline, transmission of electricity, airport, the room in northwest China area the engineerings such as are built and are related generally to salt marsh earth salt
Abdominal distension does harm to problem.Therefore the building of saline soil area is built for the research of salinized soil has realistic meaning very much.
The salt abdominal distension evil of salinized soil is solved, most basic is that the swollen machine of salt marsh earth salt is understood by the swollen experimental study of salt
Reason, influence factor and its affecting laws.Experiment that salt is swollen is carried out using the swollen tester of salt.Currently, the existing swollen tester of salt is also deposited
In following more deficiency：1. temperature can only be done（Frozen-thawed cycled, temperature gradient）The swollen experiment of salt under load action, can not achieve
The swollen experiment of drying and watering cycle salt of water content consecutive variations under constant temperature can not achieve Frozen-thawed cycled and drying and watering cycle coupling under load action
The swollen experiment of salt of conjunction；2. function is simple, integration degree is low；3. integrally-built sample bucket is used, and the swollen test sample ruler of salt
Very little height is larger, and sample bucket is apparent to the constraint that the vertical salt of sample is swollen when experiment, causes test result obviously less than normal；4. testing bucket
Height is certain, causes specimen height size adjusting limited.
Therefore, how further to improve the detection function of the swollen experiment of salt, improve the detection research effect of the swollen experiment of salt, to
Technical conditions preferably are provided to study the swollen mechanism of salt, influence factor and its affecting laws of salinized soil, becomes this field and needs
Consider the problems of.
Invention content
In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is to：How to provide one kind can be real
Now more environment parameter controls improve test simulation effect, improve test accuracy, the swollen experiment dry and wet of salt for facilitating sample to adjust
Spend control method.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions：It is used based on equipment in the application
State carries out orientation description.
A kind of salt swollen experiment humidity control method carries out the swollen experiment of salt, feature in this method using the swollen tester of salt
Be, when experiment, by being connected into the swollen tester inner cylinder the inside of salt by the pipeline connected with water source, to sample soil into
Row humidification control, the air-dried list being arranged on tube inner chamber inner wall in the swollen tester of salt is connected by the pipeline connected with wind regime
In member, sample soil is carried out to air-dry control.
In this way, control when this method can quickly and easily realize experiment to sample humidity, and then realize under constant temperature
The swollen experiment of drying and watering cycle salt of water content consecutive variations, help, which is realized, more comprehensively researchs and analyses salinized soil.
As an optimization, this method is carried out using the swollen tester of salt below, and salt is swollen, and tester includes sample bucket and temperature tune
Control system, sample bucket include outer barrel and the inner cylinder that is arranged in outer barrel, and outer barrel is vertically installed on sample gantry, temperature regulation and control system
System include circulation fluid a temperature control equipment A, circulation fluid temperature control equipment A by circulation fluid pipeline and outer barrel and inner cylinder it
Between gap constitute circumferential circulation fluid chamber cycle connection, which is characterized in that further include being done for realizing to inner cylinder pilot scale sample
The sample humidity control system of humid control.
The sample humidity control system includes be set to outside a sample bucket plus water container, and water container is added to pass through
Pipeline is connected to inner tank theca and is connected to interior tube inner chamber.The water that may be implemented to weigh needed for experiment in this way is added to water container
Interior, then control enters in interior tube inner chamber, realizes that the adjustment to sample humidity controls.Preferably, plus water container use peace
It shelves and leans on flow dead weight to carry out adding water moistening to facilitate mounted on higher than the position at the top of sample bucket.Further plus water container arrives
It is provided with water adjusting valve on pipeline between sample bucket, to facilitate control plus water speed, avoids plus water is too fast causes humidity uneven
And influence test result.
The wherein described sample humidity control system further includes an air compressor machine, and air compressor machine outlet side is connected by gas pipeline
It is connected to a temperature control expansion box, the expansion box temperature control device for realizing internal temperature control, temperature control storage are provided on temperature control expansion box
Gas tank gas outlet is connected to by gas pipeline in the air dried cell for being set to inner cylinder inner wall, and gas outlet is provided in air dried cell
And it is connected to outside sample bucket by outlet pipe.
It is to meet needed for experiment by air conditioning in this way, can lean on air compressor machine that air is pressed into temperature control expansion box
It air pressure and temperature and then is sent in the air dried cell of inner cylinder inner wall, the sample in internal tube inner chamber is air-dried, with control
Its humidity changes, and the control simulation of sample humidity is better achieved, improves test simulation effect.Further, air compressor machine goes out
It is provided with gas pressure regulator on gas pipeline between gas end and temperature control expansion box, for controlling the gas inside temperature control expansion box
Pressure.It can make its air pressure constant in 10kPa~30kPa to ensure to air-dry requirement, and not destroy soil sample structure.
As an optimization, there are one circulation fluid interlayers, circulation fluid interlayer to pass through pipeline and one for setting on the temperature control expansion box
A circulation fluid temperature control equipment C cycles connection.In this way, the air in circulation fluid control temperature control expansion box tries when reaching experiment
Temperature needed for sample avoids air themperature and the inconsistent influence to test accuracy of specimen temperature.
Further, temperature control expansion box includes outer case and interior case, one medial surface of one lateral surface of interior case and outer case
The fixed and air compressor machine outlet side that fits is communicated to interior case by the side, remaining side and upper bottom surface are vacantly arranged and constitute
Circulation fluid interlayer is provided with support I-steel between interior case bottom surface and outer case inner bottom surface.This spline structure is more reasonable, convenient
The setting of circulation fluid interlayer and the installation for facilitating gas pipeline interface.Further, the cycle of S-shaped coiling is provided in interior case
Liquid coil pipe, circulation fluid coil pipe both ends are connected to by pipeline with circulation fluid temperature control equipment C cycles.In this way, can be more preferable
Realize effective control to temperature control gas storage the temperature inside the box in ground.
As an optimization, the air dried cell includes the annular groove being circumferentially disposed on inner cylinder inner wall, annular groove slot
The closing of mouthful position is provided with a circle baffle, and several ventholes are offered on baffle, formed between baffle and annular groove for and
The ventilating layer of gas pipeline connection.
In this way, the structure of the air dried cell, can be well realized air-drying for the sample in internal tube inner chamber, while again not
Can interfere with sample itself experiment process, guarantee test result it is accurate and reliable.
Further, baffle surface is provided with grenadine, can be better protected from sample in this way and block venthole, can also keep away
Sample of being excused from an examination enters venthole and influences test accuracy.Further baffle is using soft plastic board and inner surface and inner cylinder surface of internal cavity
Unanimously；Realization can be facilitated to install and seal, preferably to reduce the influence to experiment.Still further, being filled in ventilating layer
It is provided with sand grains, sand grains can ensure that soft plastic board indent can be avoided while ventilation drying effect well, ensure baffle
Inner wall shape is consistent with inner cylinder surface of internal cavity, utmostly reduces the influence to test accuracy.1 millimeter is used as preferred sand grains
The homogeneous sand grains of grain size, can make said effect reach best.
As an optimization, interior tube inner chamber top face is disposed adjacent there are one top circulation fluid chamber, top circulation fluid chamber
By circulation fluid pipeline setting is connected to circulation fluid temperature control equipment A cycles；It is disposed adjacent below inner cylinder inner chamber bottom surface
There are one bottom cycle sap cavity rooms, and bottom cycle sap cavity room is followed by circulation fluid pipeline and a circulation fluid temperature control equipment B
Ring connection setting.
In this way, can realize temperature gradient control respectively by the circulation fluid of different temperatures at the top and bottom of inner cylinder so that
When specimen test can more preferable simulation by the downward different buried depth stratum of earth's surface, there are the actual environment situations of the temperature difference, improve experiment
Effect is simulated, improves test accuracy, the salt expandability of salinized soil can be studied by being better achieved.
As an optimization, be provided with head cover at interior tube inner chamber top surface, head cover lower surface constitute in tube inner chamber top surface, inside head cover
Hollow setting forms top circulation fluid chamber, and lid periphery and the formation of interior tube inner chamber peripheral wall can slide up and down contact, on head cover
Vertical to be provided through temperature sensor fixing hole and humidity sensor mounting hole, temperature sensor fixing hole is for installing temperature
Sensor simultaneously makes the display portion of temperature sensor be exposed to above sample bucket, and humidity sensor mounting hole is for installing humidity
Sensor simultaneously makes humidity sensor be exposed to above sample bucket；Be additionally provided with above head cover for detect head cover move up away from
From detection instrument.
Basis of the head cover simultaneously as setting top circulation fluid chamber is used in this way, and realizes salt marsh soil expansion detection
Basis, have many advantages, such as it is simple in structure, it is easy to detect, at the same can also facilitate setting temperature sensor and humidity sensor with anti-
It presents and detects salinized soil internal temperature and humidity condition, state modulator is accurate reliable during guarantee test.
As an optimization, detection instrument is electronic centigrade scale and is fixed on sample gantry that electronic centigrade scale lower end is touched
Head and head cover upper surface are in contact；It can ensure the accuracy of accuracy of detection.
As an optimization, the load simulating device for applying downward pressure to head cover is additionally provided with above head cover.
In this way, load simulating device can be relied on, the load simulation to salinized soil is realized, realize that freeze thawing follows under load action
The swollen experiment of salt that ring is coupled with drying and watering cycle.Test simulation effect is improved, is improved to salinized soil performance study analysis ability.
As an optimization, the load simulating device, including it is located at the vertically set transmission rod in head cover upper surface,
Further include a horizontally disposed and lever beam of the apical grafting above transmission rod, lever beam one end is support end and support end upper surface
It is limited by lever position-limit mechanism, the lever beam other end is loading end and loading end is provided with counterweight loading disc.In this way, passing through lever
Mode load negative pressure, when by lever principle amplification load size, second is that can preferably keep experiment during load
Power size it is constant, with ensure dead load simulate effect.Further, lever position-limit mechanism is horizontally placed on lever beam including one
The fulcrum beam of top, on fulcrum beam by screw thread be screwed on it is vertically arranged there are one adjusting bolts, adjusting bolt lower end and lever beam connect
It touches and forms fulcrum.In this way, the adjusting to lever level can be better achieved, the calculating of proof load power is accurate and keeps loading
It is steady constant.Further, the upper surface of lever beam loading end is additionally provided with air level, can preferably judge to adjust lever beam
Level.Further, lever beam and adjusting bolt lower end contact position and be male-female engagement at transmission rod tip contact
Spherical structure.In this way, force application location can be accurately positioned out, proof load loads effect.Still further, counterweight loading disc
The hook that the vertical hanging rod of to be formed one is articulated in the middle part of hanging rod beam loading end lower surface is upwardly extended by upper surface middle part
On.Ensure that the counterweight weight concentration of load is applied on a point of lever beam in this way, is conducive to improve the essence that load simulation calculates
Degree.Still further, it is in the connector of taper type that corresponding transmission rod position, which also has the entirety being vertically connected with, in the middle part of head cover inner cavity,
To better ensure that the load pressure for being transmitted to sample top surface as evenly load.
As an optimization, it is provided with bottom cover at inner cylinder inner chamber bottom surface, bottom cover upper surface forms inner cylinder inner chamber bottom surface, inside bottom cover
Hollow setting forms bottom cycle sap cavity room, and bottom cover periphery and the formation of interior tube inner chamber peripheral wall can slide up and down contact, under bottom cover
Side is equipped with the bottom cover height adjustment mechanism that can realize that bottom cover height and position is adjusted.
In this way, basic component of the bottom cover as salinized soil holding members and bottom cycle sap cavity room is leaned on, it is simple and reliable for structure,
Bottom cover can be slided up and down and can be adjusted by height adjustment mechanism, can facilitate the adjustment for realizing specimen height, improve examination
Test effect.
As an optimization, the bottom cover height adjustment mechanism includes a height adjustment bolt, and height adjustment bolt is vertically set
It sets and screw thread is screwed on cooperation in the threaded hole among sample bottom of the barrel, height adjustment bolt upper end is rotatably engaged by bearing
It is connected on bottom cover, height adjustment bolt lower end is provided with height regulation handle.
In this way, can the adjustment to specimen height, simple in structure, adjustment side conveniently be realized by rotation height regulation handle
Just quick reliable.
Further, bottom cover height adjustment mechanism further includes one and height adjustment bolt spaced scale side by side
Ruler, graduated scale are fixed on sample gantry, are also set up in height adjustment bolt lower section there are one altitude location ruler, altitude location
Ruler one end can slide up and down to limit cooperation on the scale, the other end lean on a bearing being fixed in height adjustment bolt with
Height adjustment bolt is rotatably connected.In this way, more easily bottom cover adjusting height can be obtained by direct observed reading, into
And obtain specimen height.
Further, outer barrel includes cylindric outer barrel ontology and in the form of annular discs positioned at an entirety of outer barrel body bottom portion
Collet, the threaded hole of setting and height adjustment bolt cooperation in the middle part of collet also sets up that there are two circulation fluid pipeline mistakes on collet
Hole and escape pipe via, collet upper surface are coaxially arranged with two circle card slots, and outer barrel ontology and inner cylinder are respectively clamped and seal solid
It is scheduled in corresponding card slot.In this way, having the advantages of simple in structure, installation convenient for assembly.
Further, outer barrel further includes that a sample bucket positioned at outer barrel ontology upper end covers, and sample bucket covers level side
To projection in circular ring shape and middle part expose in tube inner chamber, sample bucket covers lower surface and outer barrel ontology upper end and inner cylinder upper end
Any one be sealedly and fixedly connected and with another for can slide up and down it is embedded mating（It is set not influence integrally interior
Cylinder it is vertically movable）；It is provided in the capping of sample bucket and adds the interface of water container pipeline and by internal connecting tube for accessing
Road is connected to interior tube inner chamber, and the interface of the gas pipeline for accessing temperature control expansion box is additionally provided in the capping of sample bucket and is passed through
Internal connecting pipe is connected to air dried cell.There is the advantages of simple in structure, installation convenient for assembly and pipe arrangement in this way.
As a further improvement, the inner cylinder is spliced to obtain by multiple interior shell rings in an axial direction, between adjacent inner barrel section under
A upward taper type structure of shell ring upper surface is inserted into the corresponding taper hole shape respective outer side edges in shell ring lower face in top in side
Be connected, and shell ring does not constrain shell ring in upper end and moves up in lower end, between adjacent inner barrel section at cooperation outside be provided with sealing
Film is used to completely cut off the circumferential circulation fluid chamber outside fit clearance and inner cylinder.In this way so that during salt swollen experiment, utmostly
The constraint for reducing inner cylinder inner wall suffered by the axial expansion of sample, substantially reduces shadow of the interior bucket inner wall to the vertical swell increment of sample
It rings, greatly improves test accuracy.
Can using elastic membrane and be provided separately within two adjacent interior shell rings as a kind of structure type of diaphragm seal
At cooperation, such consumptive material is less.Can also be to use the cylindrical shape diaphragm seal for surrounding entire inner cylinder peripheral surface, it in this way can be more
Ensure sealing effect well and reduces the effect of constraint value that diaphragm seal itself vertically expands sample.Preferably two above and below diaphragm seal
End is fixed in the inner wall upper and lower ends of outer barrel, so that circulation fluid is circulated between outer barrel inner wall and diaphragm seal, will be erected in this way to sample
Influence to expansion is preferably minimized.
As advanced optimizing, it is correspondingly arranged at least one air dried cell on each interior shell ring and at least circumferential direction is upper equal
Four of even arrangement are used to add sample the water inlet of water.Humidity control effect can more preferably and be more uniformly improved in this way.
As an optimization, the circulation fluid temperature control equipment A, circulation fluid temperature control equipment B and the control of circulation fluid temperature
Device C is all made of High Precision Low Temperature slot, has temperature control conveniently, the high advantage of control accuracy.
In conclusion the present invention can realize more environment parameter controls, test simulation effect is improved, has and implements letter
Single, test accuracy is high, and sample parameter is flexibly adjustable, advantage that can be more than test method, is highly suitable for salinized soil performance
Research.
Description of the drawings：
Fig. 1 is the structural schematic diagram of the swollen tester of salt used in embodiment of the present invention.
Fig. 2 is the schematic cross-sectional view of independent temperature control expansion box in Fig. 1.
Fig. 3 is the structural schematic diagram of independent sample barrel section in Fig. 1.
Fig. 4 is the structural schematic diagram of independent water adjusting valve in Fig. 1.
Fig. 5 is the structural schematic diagram of independent inner cylindrical portion in Fig. 1.
Fig. 6 is the structural schematic diagram of independent collet part in Fig. 1.
Fig. 7 is the structural schematic diagram of independent header field in Fig. 1.
Fig. 8 is the structural schematic diagram of independent bottom cover member in Fig. 1.
Fig. 9 is the part-structure schematic diagram of independent two interior shell rings in Fig. 1.
Figure 10 is the structural schematic diagram of independent gas pressure regulator part in Fig. 1.
Figure 11 is the structural schematic diagram that sample bucket cover portion can be shown in Fig. 1.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings.
Optimal embodiment：A kind of salt swollen experiment humidity control method carries out salt in this method using the swollen tester of salt
Swollen experiment, feature be, when experiment, by being connected into the swollen tester inner cylinder of salt by the pipeline connected with water source
Face carries out humidification control to sample soil, is connected into the swollen tester of salt in tube inner chamber by the pipeline connected with wind regime
In the air dried cell being arranged on wall, sample soil is carried out to air-dry control.
In this way, control when this method can quickly and easily realize experiment to sample humidity, and then realize under constant temperature
The swollen experiment of drying and watering cycle salt of water content consecutive variations, help, which is realized, more comprehensively researchs and analyses salinized soil.
In present embodiment, this method is carried out using the swollen tester of salt of structure as shown in figs. 1-11, examination that the salt is swollen
Test instrument, including sample bucket and temperature regulation system, sample bucket includes outer barrel 18 and the inner cylinder that is arranged in outer barrel, and outer barrel 18 is vertical
On sample gantry 13, temperature regulation system includes a circulation fluid temperature control equipment A6, circulation fluid temperature control dress
It sets the circumferential circulation fluid chamber cycle that A6 is made up of gap between circulation fluid pipeline and outer barrel and inner cylinder to be connected to, further includes being used for
Realize the sample humidity control system of the humidity control to inner cylinder pilot scale sample.
This swollen tester of sample salt when in use, can realize more environmental parameter simulations, may be implemented dry to sample
The control of humidity, and then realize the swollen experiment of drying and watering cycle salt of water content consecutive variations under constant temperature, help is realized to salinized soil more
Add and comprehensively researchs and analyses.
In present embodiment, the sample humidity control system includes be set to outside a sample bucket plus water container
4, add water container 4 to be connected to inner tank theca by pipeline and is connected to interior tube inner chamber.It may be implemented to weigh needed for experiment in this way
Water is added in water container 4, and then control enters in interior tube inner chamber, realizes that the adjustment to sample humidity controls.When implementation,
Add water container 4 that mounting bracket 23 is used to be mounted on leans on flow dead weight to carry out adding water moistening higher than the position at the top of sample bucket to facilitate.
It further plus on water container to the pipeline between sample bucket is provided with water adjusting valve 27, to facilitate control plus water speed, avoids adding
Water is too fast to be caused humidity uneven and influences test result.
Wherein, the sample humidity control system further includes an air compressor machine 5, and 5 outlet side of air compressor machine passes through flue
Road is connected to a temperature control expansion box 2, and the expansion box temperature control device for realizing internal temperature control is provided on temperature control expansion box 2,
Temperature control expansion box gas outlet is connected to by gas pipeline in the air dried cell for being set to inner cylinder inner wall, is provided in air dried cell
Gas outlet is simultaneously connected to by outlet pipe 33 outside sample bucket.Air compressor machine is preferably pneumatics of the band without hot absorption drier
Machine.
It is to meet to try by air conditioning in this way, can lean on air compressor machine that the air after drying is pressed into temperature control expansion box
It tests required air pressure and temperature and then is sent in the air dried cell of inner cylinder inner wall, the sample in internal tube inner chamber is into sector-style
It is dry, to control the variation of its humidity, the control simulation of sample humidity is better achieved, improves test simulation effect.Further,
Gas pressure regulator 40 is provided on gas pipeline between air compressor machine outlet side and temperature control expansion box, for controlling temperature control expansion box
Internal air pressure.Its air pressure holding can be made to be scheduled between 10kPa~30kPa, required with ensureing to air-dry, and do not destroy soil sample
Structure.When implementation further, it is additionally provided with gas storage temperature sensor 1 on temperature control expansion box 2, for realizing temperature control expansion box 2
The detection of interior air themperature is with conveniently regulating and controlling.
Wherein, there are one circulation fluid interlayers, circulation fluid interlayer to be followed by pipeline and one for setting on the temperature control expansion box
The C8 cycle connections of ring liquid temperature control equipment.In this way, being tried by circulation fluid to control when the air in temperature control expansion box reaches experiment
Sample required temperature avoids air themperature and the inconsistent influence to sample precision of sample.
Wherein, temperature control expansion box includes outer case 3 and interior case 10,3 one insides of 10 1 lateral surfaces of interior case and outer case
The face fixed and air compressor machine outlet side that fits is communicated to interior case by the side, remaining side and upper bottom surface vacantly setting and structure
At circulation fluid interlayer, support I-steel 12 is provided between 3 inner bottom surface of 10 bottom surface of interior case and outer case.This spline structure more closes
Reason facilitates the setting of circulation fluid interlayer and facilitates the installation of gas pipeline interface.Further, it is provided with S-shaped disk in interior case
Around circulation fluid coil pipe 11,11 both ends of circulation fluid coil pipe are connected to by pipeline and the circulation fluid temperature control equipment C8 cycle.
In this way, effective control to temperature control gas storage the temperature inside the box can be better achieved.
Wherein, the air dried cell includes the annular groove being circumferentially disposed on inner cylinder inner wall, annular groove notch position
Set closing and be provided with a circle baffle 38, several ventholes are offered on baffle 38, between baffle and annular groove formed for and
The ventilating layer 36 of gas pipeline connection.
In this way, the structure of the air dried cell, can be well realized air-drying for the sample in internal tube inner chamber, while again not
Can interfere with sample itself experiment process, guarantee test result it is accurate and reliable.
Wherein, baffle surface is provided with grenadine 37, can be better protected from sample in this way and block venthole, can also avoid
Sample enters venthole and influences test accuracy.When implementation can also further baffle using soft plastic board and inner surface and interior
Tube inner chamber surface is consistent；Realization can be facilitated to install and seal, preferably to reduce the influence to experiment.Still further, logical
Sand grains is filled in stratification of wind 36, sand grains can ensure avoid in soft plastic board well while ventilation drying effect
It is recessed, ensure that baffle inner wall shape is consistent with inner cylinder surface of internal cavity, utmostly reduces the influence to test accuracy.As preferred sand
Grain uses the homogeneous sand grains or high rigidity sand grains of 1 millimeter of grain size（Such as normal sand sand grains）, said effect can be made to reach best.
Wherein, interior tube inner chamber top face is disposed adjacent there are one top circulation fluid chamber, and top circulation fluid chamber passes through
Circulation fluid pipeline is connected to setting with circulation fluid temperature control equipment A6 cycles；It is disposed adjacent one below inner cylinder inner chamber bottom surface
A bottom cycle sap cavity room, bottom cycle sap cavity room are connected by circulation fluid pipeline and a circulation fluid temperature control equipment B7 cycle
Logical setting.
In this way, can realize temperature gradient control respectively by the circulation fluid of different temperatures at the top and bottom of inner cylinder so that
When specimen test can more preferable simulation by the downward different buried depth stratum of earth's surface, there are the actual environment situations of the temperature difference, improve experiment
Effect is simulated, improves test accuracy, the salt expandability of salinized soil can be studied by being better achieved.
Wherein, be provided with head cover 32 at interior tube inner chamber top surface, 32 lower surface of head cover constitute in tube inner chamber top surface, in head cover 32
The hollow setting in portion forms top circulation fluid chamber, and lid periphery and interior tube inner chamber peripheral wall form the contact that can slide up and down, head cover
On be vertically provided through temperature sensor fixing hole 32-3 and humidity sensor mounting hole 32-4, temperature sensor fixing hole is used
In installation sample temperature sensor 16 and sample is exposed to the display portion of temperature sensor 16 above sample bucket, it is wet
Degree sensor mounting hole is used to install humidity sensor 25 and so that humidity sensor 25 is exposed to above sample bucket；Above head cover
It is additionally provided with the detection instrument 26 that distance is moved up for detecting head cover.
Basis of the head cover simultaneously as setting top circulation fluid chamber is used in this way, and realizes salt marsh soil expansion detection
Basis, have many advantages, such as it is simple in structure, it is easy to detect, at the same can also facilitate setting temperature sensor and humidity sensor with anti-
It presents and detects salt marsh soil sample internal temperature and humidity condition, state modulator is accurate reliable during guarantee test.
Wherein, detection instrument 26 is electronic centigrade scale and is fixed on sample gantry, electronic centigrade scale lower end contact
It is in contact with head cover upper surface；It can ensure the accuracy of accuracy of detection.
Wherein, 32 top of head cover is additionally provided with the load simulating device for applying downward pressure to head cover.
In this way, load simulating device can be relied on, the load simulation to salinized soil is realized, realize that freeze thawing follows under load action
The swollen experiment of salt that ring is coupled with drying and watering cycle.Test simulation effect is improved, is improved to salinized soil performance study analysis ability.
Wherein, the load simulating device, including it is located at the vertically set transmission rod 32-5 in head cover upper surface,
Further include a horizontally disposed and lever beam 15 of the apical grafting above transmission rod, lever beam one end is support end and support end upper table
Face is limited by lever position-limit mechanism, and the lever beam other end is loading end and loading end is provided with and adds for loading the counterweight of counterweight 17
Load plate 9.In this way, negative pressure is loaded by way of lever, first, by the size of lever principle amplification load, second is that can be preferably
Load force size is constant during holding experiment, to ensure the simulation effect of constant load.When implementation further, lever limits
Position mechanism includes a fulcrum beam being horizontally placed on above lever beam, and being screwed on by screw thread on fulcrum beam, vertically arranged there are one tune
Bolt 24 is saved, 24 lower end of adjusting bolt and lever beam contact to form fulcrum.In this way, the tune to lever level can be better achieved
The calculating of section, proof load power is accurate and keeps load steady constant.When implementation, the upper surface of lever beam loading end is additionally provided with
Air level 14 can preferably judge the level for adjusting lever beam.Further, lever beam and adjusting bolt lower end contact position with
And with the spherical structure that at transmission rod tip contact is male-female engagement.In this way, force application location can be accurately positioned out, ensure negative
Carry load effect.It is articulated in still further, counterweight loading disc upwardly extends the vertical hanging rod of to be formed one by upper surface middle part
On a hook in the middle part of hanging rod beam loading end lower surface.Ensure that the counterweight weight concentration of load is applied to the one of lever beam in this way
On a point, it is conducive to improve the precision that load simulation calculates.Still further, corresponding transmission rod position also has in the middle part of head cover inner cavity
The entirety being vertically connected with is in the connector of taper type, to be preferably transmitted to load pressure on sample in the form of evenly load
Surface.
Wherein, it is provided with bottom cover 35 at inner cylinder inner chamber bottom surface, 35 upper surface of bottom cover forms inner cylinder inner chamber bottom surface, inside bottom cover
Hollow setting forms bottom cycle sap cavity room, and bottom cover periphery and the formation of interior tube inner chamber peripheral wall can slide up and down contact, under bottom cover
Side is equipped with the bottom cover height adjustment mechanism that can realize that bottom cover height and position is adjusted.When implementation, 35 bottom surface of bottom cover is additionally provided with
35-2 is exported with bottom cycle liquid chamber bottom cover circulation fluid entrance 35-1 and bottom cover circulation fluid.
In this way, basic component of the bottom cover as salt marsh soil sample holding members and bottom cycle sap cavity room is leaned on, it is simple in structure
Reliably, bottom cover can be slided up and down and can be adjusted by height adjustment mechanism, can be facilitated the adjustment for realizing specimen height, be carried
High test effect.
Wherein, the bottom cover height adjustment mechanism includes a height adjustment bolt 20, and height adjustment bolt 20 is vertically set
It sets and screw thread is screwed on cooperation in the threaded hole among sample bottom of the barrel, height adjustment bolt upper end is rotationally matched by bearing 34
Conjunction is connected on bottom cover 35, and height adjustment bolt lower end is provided with height regulation handle.
In this way, can the adjustment to specimen height, simple in structure, adjustment side conveniently be realized by rotation height regulation handle
Just quick reliable.
Wherein, bottom cover height adjustment mechanism further includes one and height adjustment bolt spaced graduated scale 22 side by side,
Graduated scale 22 is fixed on sample gantry, is also set up in height adjustment bolt lower section there are one altitude location ruler 21, height is fixed
Position ruler 21 one end can slide up and down to limit cooperation on graduated scale 22, the other end by be fixed in height adjustment bolt 20 one
A bearing and height adjustment bolt 20 are rotatably connected.In this way, more easily bottom cover can be obtained direct observed reading
Height is adjusted, and then obtains specimen height.
Wherein, outer barrel includes cylindric outer barrel ontology and positioned at an entirety of outer barrel body bottom portion bottom in the form of annular discs
The threaded hole that support 19, the setting of the middle part of collet 19 and height adjustment bolt 20 coordinate, also sets up that there are two recycle liquid pipe on collet 19
Road via and an escape pipe via, collet upper surface are coaxially arranged with two circle card slots, and outer barrel ontology and inner cylinder are respectively clamped
And it seals and is fixed in corresponding card slot.In this way, having the advantages of simple in structure, installation convenient for assembly.
Wherein, outer barrel further includes the sample bucket capping 30 positioned at outer barrel ontology upper end, and sample bucket covers 30 level sides
To projection in circular ring shape and middle part expose in tube inner chamber, sample bucket covers lower surface and outer barrel ontology upper end and inner cylinder upper end
Any one be sealedly and fixedly connected and with another for can slide up and down it is embedded mating（It is set not influence integrally interior
Cylinder it is vertically movable）, sample bucket covers to be provided on 30 adds the interface of water container pipeline and by internal connection for accessing
Pipeline 29 is connected to interior tube inner chamber, and the interface 31 of the gas pipeline for accessing temperature control expansion box is additionally provided in the capping of sample bucket
And air dried cell is connected to by internal connecting pipe.There is simple in structure, installation convenient for assembly and pipe arrangement in this way
Advantage.It is fixed when it is implemented, sample bucket capping lower surface has for sealing fixed outer barrel with the grafting of outer barrel ontology upper end
The annular flange for having a circle downward with annular groove, outer barrel fixation annular groove inside, annular flange lower end can slide up and down to
It is mating in one of inner cylinder upper surface capping connection annular groove.In this way, can facilitate sample bucket capping complete and
The realization easy to connect of inner cylinder and outer barrel ontology seals, and makes it not and influence inner cylinder moving up and down in specimen, protects
Confirmatory test precision is reliable.
In present embodiment, the inner cylinder in an axial direction by multiple interior shell rings 28 splicing obtains, between adjacent inner barrel section 28 by
A upward taper type structure of shell ring upper surface is inserted into the corresponding taper hole shape structure in shell ring lower face in top and matches in lower section
Close and be connected, and shell ring does not constrain shell ring in upper end and moves up in lower end, between adjacent inner barrel section at cooperation outside be provided with it is close
Sealer 41 is used to completely cut off the circumferential circulation fluid chamber outside fit clearance and inner cylinder.It is maximum in this way so that during salt swollen experiment
Degree reduces the constraint of inner cylinder inner wall suffered by the axial expansion of sample, substantially reduces the influence to the vertical swell increment of sample, pole
The earth improves test accuracy.
Can using elastic membrane and be provided separately within adjacent two as a kind of structure type of diaphragm seal 41 when implementation
At a interior shell ring cooperation, such consumptive material is less.Can also be to use the cylindrical shape diaphragm seal for surrounding entire inner cylinder peripheral surface, this
Sample can better ensure that sealing effect and reduce the effect of constraint value that diaphragm seal itself vertically expands sample.Preferably seal
Film upper and lower ends are fixed in the upper and lower ends of outer barrel inner wall, so that circulation fluid is circulated between outer barrel inner wall and diaphragm seal, circulation fluid
Diaphragm seal can be attached on interior bucket outer wall when cycle, good sealing effect existing in this way, also have good temperature control effect, and will
The influence that sample vertically expands is preferably minimized.
In present embodiment, it is correspondingly arranged at least one air dried cell on each interior shell ring and at least circumferential direction is upper uniform
Water inlet of four of arrangement for adding water to sample.Humidity control effect can more preferably and be more uniformly improved in this way.
In present embodiment, the circulation fluid temperature control equipment A, circulation fluid temperature control equipment B and circulation fluid
Temperature control equipment C is all made of High Precision Low Temperature slot, has temperature control conveniently, the high advantage of control accuracy.
The above-mentioned swollen tester of salt has the advantages that：1. realizing the dry and wet of water content consecutive variations under temperature-controllable
Experiment that cyclic salt is swollen；2. realizing the swollen experiment of salt that Frozen-thawed cycled is coupled with drying and watering cycle under load action；3. function is integrated
Degree is high, can realize under the influence factors such as Frozen-thawed cycled, temperature gradient, load, drying and watering cycle and each influence factor coupling condition
The swollen experiment of salt, and above each equal able person of factor is in order to control；4. segmented sample bucket is substantially reduced to the vertical swell increment of sample
Influence, it is more accurate to test result；5. sample bucket backing board height can realize specimen height in sample bucket with up and down adjustment（Interior bucket）
Arbitrary setting in altitude range.
Performance detection experiment is carried out to above-mentioned tester, test result shows the sample of a high 30cm, diameter 10cm
Water content drop to 3%~6% from 20% and only need 2d~4d（The time wants longer when temperature is low, and temperature is needed at 0~5 DEG C at present
6d）, the salt bulk measured using segmented sample bucket is obviously big compared with the salt bulk that monoblock type sample bucket is measured, and therebetween
Gap with specimen height increase and increases, and with the increase of specimen finish and slightly have reduce.When drying and watering cycle circulation experiment
The air pressure that air in insulating box should strictly be controlled is crossed havoc soil sample structure to avoid air pressure, is preferably controlled within 30kPa.
Therefore the above-mentioned swollen tester of salt can realize more environment parameter controls, improve test simulation effect, have structure
Simply, test accuracy is high, and sample parameter is flexibly adjustable, advantage that can be more than test method, is highly suitable for salinized soil performance
Research.
Claims (9)
1. a kind of swollen experiment humidity control method of salt, the swollen experiment of salt is carried out using the swollen tester of salt in this method, feature exists
When, experiment, by being connected into the swollen tester inner cylinder the inside of salt by pipeline connect with water source, to the progress of sample soil
Humidification control, the air dried cell being arranged on tube inner chamber inner wall in the swollen tester of salt is connected by the pipeline connected with wind regime
In, sample soil is carried out to air-dry control；
The air dried cell includes the annular groove being circumferentially disposed on inner cylinder inner wall, the closing setting of annular groove notch position
There is a circle baffle, several ventholes are offered on baffle, is formed between baffle and annular groove for being connected to gas pipeline
Ventilating layer.
2. the swollen experiment humidity control method of salt as described in claim 1, which is characterized in that use the swollen experiment of salt below
Instrument carries out, salt is swollen tester includes sample bucket and temperature regulation system, and sample bucket includes outer barrel and the inner cylinder that is arranged in outer barrel,
Outer barrel is vertically installed on sample gantry, and temperature regulation system includes a circulation fluid temperature control equipment A, circulation fluid temperature control
The circumferential circulation fluid chamber cycle that device A processed is made up of gap between circulation fluid pipeline and outer barrel and inner cylinder is connected to, and further includes
For realizing the sample humidity control system controlled the humidity of inner cylinder pilot scale sample；
The sample humidity control system includes be set to outside a sample bucket plus water container, and water container is added to pass through pipeline
It is connected to inner tank theca and is connected to interior tube inner chamber；
The sample humidity control system further includes an air compressor machine, and air compressor machine outlet side is connected to one by gas pipeline
Temperature control expansion box is provided with the expansion box temperature control device for realizing internal temperature control, temperature control expansion box outlet on temperature control expansion box
Mouth is connected to by gas pipeline in the air dried cell for being set to inner cylinder inner wall, gas outlet is provided in air dried cell and by going out
Feed channel is connected to outside sample bucket.
3. the swollen experiment humidity control method of salt as claimed in claim 2, which is characterized in that be arranged on the temperature control expansion box
There are one circulation fluid interlayer, circulation fluid interlayer passes through pipeline and a circulation fluid temperature control equipment C cycle connection.
4. the swollen experiment humidity control method of salt as claimed in claim 2, which is characterized in that interior tube inner chamber top face is adjacent
There are one top circulation fluid chamber, top circulation fluid chambers to pass through circulation fluid pipeline and the circulation fluid temperature control equipment for setting
A cycle connection settings；Bottom cycle sap cavity room there are one being disposed adjacent below inner cylinder inner chamber bottom surface, bottom cycle sap cavity room passes through
Circulation fluid pipeline and a circulation fluid temperature control equipment B cycle connection setting.
5. the swollen experiment humidity control method of salt as claimed in claim 4, which is characterized in that be provided at interior tube inner chamber top surface
Head cover, head cover lower surface constitute in tube inner chamber top surface, head cover inner hollow be arranged to be formed top circulation fluid chamber, lid periphery and
Interior tube inner chamber peripheral wall forms the contact that can slide up and down, and temperature sensor fixing hole is vertically provided through on head cover and humidity passes
Sensor mounting hole, temperature sensor fixing hole is for mounting temperature sensor and the display portion of temperature sensor is exposed to
Above sample bucket, humidity sensor mounting hole is used to install humidity sensor and so that humidity sensor is exposed to sample bucket
Side；It is additionally provided with the detection instrument that distance is moved up for detecting head cover above head cover.
6. the swollen experiment humidity control method of salt as claimed in claim 5, which is characterized in that be additionally provided with and be used for above head cover
Apply the load simulating device of downward pressure to head cover.
7. the swollen experiment humidity control method of salt as claimed in claim 4, which is characterized in that be provided at inner cylinder inner chamber bottom surface
Bottom cover, bottom cover upper surface form inner cylinder inner chamber bottom surface, and bottom cover inner hollow is arranged to form bottom cycle sap cavity room, bottom cover periphery and
Interior tube inner chamber peripheral wall forms the contact that can slide up and down, and the bottom cover height that can realize bottom cover height and position is equipped with below bottom cover
Regulating mechanism.
8. the swollen experiment humidity control method of salt as claimed in claim 7, which is characterized in that the bottom cover height adjustment mechanism
Including a height adjustment bolt, height adjustment bolt is vertically arranged and screw thread is screwed on screw thread of the cooperation among sample bottom of the barrel
In hole, height adjustment bolt upper end is rotatably engaged by bearing to be connected on bottom cover, and height adjustment bolt lower end is provided with height
Spend regulation handle.
9. the swollen experiment humidity control method of salt as claimed in claim 8, which is characterized in that bottom cover height adjustment mechanism, also
Including one, spaced graduated scale, graduated scale are fixed on sample gantry side by side with height adjustment bolt, and height adjusts spiral shell
It is also set up in bolt lower section there are one altitude location ruler, altitude location ruler one end can slide up and down to limit cooperation in graduated scale
On, the other end is rotatably connected by the bearing and height adjustment bolt being fixed in height adjustment bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824404.1A CN106370815B (en) | 2016-09-14 | 2016-09-14 | A kind of swollen experiment humidity control method of salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824404.1A CN106370815B (en) | 2016-09-14 | 2016-09-14 | A kind of swollen experiment humidity control method of salt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106370815A CN106370815A (en) | 2017-02-01 |
| CN106370815B true CN106370815B (en) | 2018-10-23 |
Family
ID=57896810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610824404.1A Expired - Fee Related CN106370815B (en) | 2016-09-14 | 2016-09-14 | A kind of swollen experiment humidity control method of salt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106370815B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841277B (en) * | 2017-03-24 | 2024-01-26 | 宁夏大学 | Saline soil expansion deformation and expansion force measuring equipment |
| CN109781957A (en) * | 2017-11-12 | 2019-05-21 | 兰州城市学院 | A kind of soil function test barrel |
| CN111366713A (en) * | 2020-03-27 | 2020-07-03 | 内蒙古大学 | Test device for simulating dry-wet cycle and freeze-thaw cycle of roadbed soil body |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353514A (en) * | 2013-08-05 | 2013-10-16 | 河南理工大学 | Three-dimensional similar simulation experimental method for groundwater pollution treatment and repair |
| CN103743771A (en) * | 2013-12-04 | 2014-04-23 | 新疆农业大学 | Freeze-thawing circulation detection apparatus for nature saline soil |
| CN203811437U (en) * | 2014-04-06 | 2014-09-03 | 西安科技大学 | Height-adjustable coal rock test sample preparation device |
| CN104181102A (en) * | 2014-08-08 | 2014-12-03 | 太原理工大学 | Experimental device and experimental method of impact drawing-twisting load |
| CN104597222A (en) * | 2015-01-13 | 2015-05-06 | 河南大学 | Large frozen soil model test system with moisturizing function and frost heaving test function |
| CN105865685A (en) * | 2016-04-11 | 2016-08-17 | 三峡大学 | Soil expansion stress test device capable of simulating immersion-air drying cyclic action |
| CN105004590B (en) * | 2015-07-24 | 2017-09-29 | 宁波大学 | A kind of artificial synthesized transparent native device of rapid preparing and operating method |
-
2016
- 2016-09-14 CN CN201610824404.1A patent/CN106370815B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353514A (en) * | 2013-08-05 | 2013-10-16 | 河南理工大学 | Three-dimensional similar simulation experimental method for groundwater pollution treatment and repair |
| CN103743771A (en) * | 2013-12-04 | 2014-04-23 | 新疆农业大学 | Freeze-thawing circulation detection apparatus for nature saline soil |
| CN203811437U (en) * | 2014-04-06 | 2014-09-03 | 西安科技大学 | Height-adjustable coal rock test sample preparation device |
| CN104181102A (en) * | 2014-08-08 | 2014-12-03 | 太原理工大学 | Experimental device and experimental method of impact drawing-twisting load |
| CN104597222A (en) * | 2015-01-13 | 2015-05-06 | 河南大学 | Large frozen soil model test system with moisturizing function and frost heaving test function |
| CN105004590B (en) * | 2015-07-24 | 2017-09-29 | 宁波大学 | A kind of artificial synthesized transparent native device of rapid preparing and operating method |
| CN105865685A (en) * | 2016-04-11 | 2016-08-17 | 三峡大学 | Soil expansion stress test device capable of simulating immersion-air drying cyclic action |
Non-Patent Citations (6)
| Title |
|---|
| Analysis of coarse saline soil salt expansion characteristics with different freeze-thaw cycle;Zhang, QM;《Advanced Materials Research》;20131231;1169-1173 * |
| Salt expansion and frost heave of freezing saline soils;Xu, XZ;《International Symposium on Ground Freezing and Frost Action in Soils》;19971231;407-414 * |
| 典型天然盐渍土多次冻融循环盐胀试验研究;包卫星;《岩土工程学报》;20061231;第28卷(第11期);1991-1995 * |
| 典型天然粗粒盐渍土盐胀微观机制分析;张莎莎;《岩土力学》;20100131;第31卷(第1期);123-127 * |
| 天然粗颗粒硫酸盐渍土盐胀量剧变界限的试验探讨;赵栋;《工程勘察》;20151231(第8期);26-30 * |
| 恒温下含硫酸钠盐粗颗粒土盐胀特征及过程研究;吴青柏;《冰川冻土》;20010930;238-243 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106370815A (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106290798B (en) | A kind of swollen testing equipment of high-precision salt | |
| CN106324220B (en) | A method of improving the swollen testing inspection precision of salt marsh earth salt | |
| CN106370815B (en) | A kind of swollen experiment humidity control method of salt | |
| CN106248907B (en) | A kind of swollen tester sample bucket of salt | |
| CN105865685B (en) | A kind of soil expansion stress test device simulated immersion-and air-dry ringing | |
| CN107228794A (en) | Drying and watering cycle unsaturated soil triaxial apparatus based on temperature control | |
| CN110082508A (en) | The swollen characteristic test apparatus of salt marsh earth salt under the conditions of a kind of deflection constraint | |
| CN206289259U (en) | A kind of controlled oxygen temperature control air pressure pressure cell culture apparatus | |
| CN113390463B (en) | Grain storage simulation multi-field coupling test platform | |
| CN109060631B (en) | A kind of varying head permeability coefficient measuring system and measurement method | |
| CN208334114U (en) | A kind of soil evaporation monitoring device | |
| CN102998720A (en) | Method and device for calibrating dynamic response characteristic of sonde humidity by double flow method | |
| CN106290797B (en) | A kind of swollen tester of multi-functional salt | |
| CN109253925A (en) | A kind of three temperature control unsaturated soil triaxial test systems | |
| CN109709017A (en) | A kind of rock fracture high pressure gas adsorption tester device and its test method | |
| CN106444886B (en) | A kind of humidity control system | |
| CN110514533A (en) | A kind of three-axis mounting and application method suitable for testing soil body mechanical characteristic in the case where water recycles osmosis | |
| CN202471557U (en) | Multifunctional sand column water vapor seepage tester | |
| CN106153870B (en) | Tester experimental enviroment parameter simulation control system that salt is swollen | |
| CN205982270U (en) | Salt expansion test instrument inner tube structure | |
| CN205982271U (en) | A air -dry control system for salt expansion test instrument | |
| CN206057311U (en) | A kind of salt is swollen tester load simulating device | |
| CN205982143U (en) | Outer barrel knot of salt expansion test instrument constructs | |
| CN108359594A (en) | A kind of device and its application for simulating natural gas Micro blazed-grating | |
| CN205982269U (en) | Experimental sample bucket substructure of salt expansion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181023 Termination date: 20200914 |