CN106153870B - Tester experimental enviroment parameter simulation control system that salt is swollen - Google Patents
Tester experimental enviroment parameter simulation control system that salt is swollen Download PDFInfo
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- CN106153870B CN106153870B CN201610824327.XA CN201610824327A CN106153870B CN 106153870 B CN106153870 B CN 106153870B CN 201610824327 A CN201610824327 A CN 201610824327A CN 106153870 B CN106153870 B CN 106153870B
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- 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
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- 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
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Abstract
The invention discloses a kind of swollen tester experimental enviroment parameter simulation control system of salt, including temperature regulation system, temperature regulation system includes a circulation fluid temperature control equipment A, the circumferential circulation fluid chamber circulation that circulation fluid temperature control equipment A is made up of gap between circulation fluid pipeline and outer barrel and inner cylinder connects, it is characterized in that, interior tube inner chamber top face has been disposed adjacent a top circulation fluid chamber, and top circulation fluid chamber connects setting by circulation fluid pipeline with circulation fluid temperature control equipment A circulations；A bottom cycle sap cavity room is disposed adjacent below inner cylinder inner chamber bottom surface, bottom cycle sap cavity room is set by circulation fluid pipeline and a circulation fluid temperature control equipment B circulation connection.The present invention has the advantages that can realizing more environment parameter controls, improving test simulation effect, improve test accuracy.
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 tester environmental parameter simulation control of salt
System processed.
Background technology
Salinized soil isSolonchakWithAlkaline earthAnd various salinization,Alkali-affected soilGeneral name.Solonchak refers to soluble-salt in soil
Content reaches has what is significantly endangered to plant growthGreat soil group.Salt content index is different because of different salinity compositions.Alkaline earth refers to soil
Contain the volume exchangeable sodium for endangering 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 world land
The 6.5% of area, accounts for the 39% of the arid biogeographic zone gross area.Chinese salinized soil area there are about more than 20 ten thousand square kilometres, account for the total face in territory
Long-pending 2.1%.The salt of salinized soil is swollen to cause ground bulging, cause the constructure grounds such as highway, airport, house to produce bulge, open
The engineering disease such as split；Road, pipeline, transmission of electricity, airport, the room in NORTHWEST CHINA area the engineering such as are built and are related generally to salt marsh earth salt
Abdominal distension does harm to problem.Therefore be directed to building construction of the research of salinized soil for saline soil area 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.At present, the swollen tester of existing salt is also deposited
In following more deficiency：1. temperature can only be done（Frozen-thawed cycled, temperature gradient）With the swollen experiment of salt under load action, it is impossible to realize
The swollen experiment of drying and watering cycle salt of water content consecutive variations under constant temperature, it is impossible to realize 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 highly larger, the constraint swollen to the vertical salt of sample of sample bucket is obvious during experiment, causes result of the test substantially less than normal；4. test bucket
Height is certain, causes specimen height size adjusting limited.
Therefore, how further to improve the function of the swollen test apparatus of salt, improve the precision of the swollen test apparatus of salt, to more preferable
Ground for study salinized soil the swollen mechanism of salt, influence factor and its affecting laws technical conditions are provided, become this area have it is considered
The problem of.
The content of the invention
In view of the above shortcomings of the prior art, the technical problems to be solved by the invention are：How a kind of realize more is provided
More environment parameter controls, improves test simulation effect, improves the swollen tester experimental enviroment parameter simulation control of salt of test accuracy
System processed.
In order to solve the above-mentioned technical problem, present invention employs following technical solution：Used in the application based on equipment
State carries out orientation description.
A kind of swollen tester experimental enviroment parameter simulation control system of salt, including temperature regulation system, temperature regulation system
Including a circulation fluid temperature control equipment A, circulation fluid temperature control equipment A passes through between circulation fluid pipeline and outer barrel and inner cylinder
The circumferential circulation fluid chamber circulation connection that gap is formed, it is characterised in that interior tube inner chamber top face has been disposed adjacent a top
Portion's circulation fluid chamber, top circulation fluid chamber are connected with circulation fluid temperature control equipment A circulations by circulation fluid pipeline and set
Put；A bottom cycle sap cavity room is disposed adjacent below inner cylinder inner chamber bottom surface, bottom cycle sap cavity room passes through circulation fluid pipeline
Setting is connected with a circulation fluid temperature control equipment B circulation.
In this way, it can realize temperature gradient control respectively by the circulation fluid of different temperatures at the top and bottom of inner cylinder so that
Can more preferably actual environment situation of the simulation by the downward different buried depth stratum of earth's surface there are the temperature difference, raising it be tested during specimen test
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 form in tube inner chamber top surface, inside head cover
Hollow set forms top circulation fluid chamber, and lid periphery and interior tube inner chamber perisporium form the contact that can slide up and down, on head cover
Vertical to be provided through temperature sensor fixing hole and humidity sensor mounting hole, temperature sensor fixing hole is used to install temperature
Sensor simultaneously causes the display portion of temperature sensor to be exposed to above sample bucket, and humidity sensor mounting hole is used to install humidity
Sensor simultaneously causes humidity sensor to be exposed to above sample bucket；Be additionally provided with above head cover for detect head cover move up away from
From instrumentation.
So using the head cover basis as circulation fluid chamber at the top of setting, and realize salt marsh soil expansion detection at the same time
Basis, has the advantages that simple in structure, easy to detect, while can also facilitate set temperature sensor and humidity sensor with anti-
Present and detect salinized soil internal temperature and humidity condition, state modulator is accurate reliable during guarantee test.
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 positioned at the vertically set transmission rod in head cover upper surface,
A horizontally disposed and lever beam of the apical grafting above transmission rod is further included, lever beam one end is support end and support end upper surface
Spacing by lever position-limit mechanism, the lever beam other end is provided with counterweight loading disc for loading end and loading end.In this way, pass through lever
Mode load negative pressure, when by lever principle amplification load size, second, 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, is screwed on fulcrum beam by screw thread and is vertically provided with an adjusting bolt, adjusting bolt lower end and lever beam connect
Touch and form 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 loading effect.Yet 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.So ensure that the counterweight weight of loading is concentrated to be applied on a point of lever beam, beneficial to the essence for improving load simulation calculating
Degree.Yet further, corresponding transmission rod position also has the connector that the entirety being vertically connected with is in taper type in the middle part of head cover inner cavity,
The load pressure of sample top surface is delivered to better ensure that 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 interior tube inner chamber perisporium form the contact that can slide up and down, under bottom cover
Side is provided with the bottom cover height adjustment mechanism that can realize that bottom cover height and position is adjusted.
In this way, by bottom cover as salinized soil holding members and the basic component of bottom cycle sap cavity room, it is simple and reliable for structure,
Bottom cover can be slided up and down and can adjusted by height adjustment mechanism, can conveniently realize the adjustment of 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
Put 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, it can conveniently pass through adjustment of the rotation height regulation handle realization to specimen height, simple in structure, adjustment side
Just it is 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, and an altitude location ruler, altitude location are additionally provided with height adjustment bolt lower section
Ruler one end can slide up and down to spacing 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.
As an optimization, the sample humidity control system for being used for realization the humidity control to inner cylinder pilot scale sample is further included；
The sample humidity control system includes be arranged at outside a sample bucket plus water container, adds water container to be connected by pipeline
Connected to inner tank theca and with interior tube inner chamber.
In this way, the water that can also be weighed at the trial needed for experiment is added in water container, then control enters interior
In tube inner chamber, the adjustment control to sample humidity is realized.And then realize the control to sample humidity, and then realize and contain under constant temperature
The swollen experiment of drying and watering cycle salt of water consecutive variations, help, which is realized, more comprehensively researchs and analyses salinized soil.Preferably, plus
Water container uses mounting bracket to be installed on and carries out adding water moistening by current dead weight to facilitate higher than the position at the top of sample bucket.Further
Ground adds water container that the pipeline between sample bucket is provided with water adjusting valve, to facilitate control plus water speed, avoids plus water is too fast leads
Cause humidity uneven and influence result of the test.
As an optimization, the sample humidity control system includes an air compressor machine, and air compressor machine outlet side passes through flue
Road is connected to a temperature control expansion box, and the expansion box temperature control device for realizing internal temperature control is provided with temperature control expansion box, temperature
Control expansion box gas outlet is connected to by gas pipeline to be arranged in the air dried cell of inner cylinder inner wall, is provided with out in air dried cell
Gas port is simultaneously connected to outside sample bucket by outlet pipe.
In this way, can lean on air compressor machine that air is pressed into temperature control expansion box, air adjustment is required for satisfaction experiment
Air pressure and temperature and then it 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
Gas pressure regulator is provided with 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, a circulation fluid interlayer is provided with the temperature control expansion box, circulation fluid interlayer passes through pipeline and one
A circulation fluid temperature control equipment C circulations connection.In this way, tried when reaching experiment by the air in circulation fluid control temperature control expansion box
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, interior one lateral surface of case and one medial surface of 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 vacantly set and form
Circulation fluid interlayer, support I-steel is provided between interior case bottom surface and outer case inner bottom surface.This spline structure is more reasonable, convenient
Circulation fluid interlayer sets and facilitates the installation of gas pipeline interface.Further, the circulation of S-shaped coiling is provided with interior case
Liquid coil pipe, circulation fluid coil pipe both ends are connected by pipeline with circulation fluid temperature control equipment C circulations.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 groove
The closing of mouthful position is provided with a circle baffle, and some ventholes are offered on baffle, formed between baffle and annular groove be used 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
The process of sample itself experiment can be interfered with, guarantee test result is accurately and reliably.
Further, baffle surface is provided with grenadine, can so be better protected from sample and block venthole, can also keep away
Be excused from an examination sample into venthole and influence test accuracy.Further baffle uses soft plastic board and inner surface and inner cylinder surface of internal cavity
Unanimously；Installation and sealing can be conveniently realized, preferably to reduce the influence to experiment.Yet further, filled in ventilating layer
Sand grains is provided with, 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, at utmost reduces the influence to test accuracy.1 millimeter is used as preferred sand grains
The homogeneous sand grains of particle diameter, can cause the effect above to reach optimal.
In conclusion the present invention, which has, can realize more environment parameter controls, test simulation effect is improved, improves examination
The advantages that testing precision.
Brief description of the drawings：
Fig. 1 is the structure diagram for employing a kind of swollen tester embodiment of salt 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 structure diagram of independent sample barrel section in Fig. 1.
Fig. 4 is the structure diagram of independent water adjusting valve in Fig. 1.
Fig. 5 is the structure diagram of independent inner cylindrical portion in Fig. 1.
Fig. 6 is the structure diagram of independent collet part in Fig. 1.
Fig. 7 is the structure diagram of independent header field in Fig. 1.
Fig. 8 is the structure 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 structure diagram of independent gas pressure regulator part in Fig. 1.
Figure 11 is the structure diagram that sample bucket cover portion can be shown in Fig. 1.
Embodiment
The present invention is made further specifically with reference to a kind of swollen tester of salt for employing the present invention and its attached drawing
It is bright.
Optimal embodiment：As shown in figs. 1-11, the swollen tester of a kind of salt, including sample bucket and temperature regulation system, examination
Sample bucket includes outer barrel 18 and the inner cylinder being arranged in outer barrel, and outer barrel 18 is vertically installed on sample gantry 13, temperature regulation system
Including circulation fluid a temperature control equipment A6, circulation fluid temperature control equipment A6 by circulation fluid pipeline and outer barrel and inner cylinder it
Between the circumferential circulation fluid chamber circulation connection that forms of gap, further include and be used for realization the examination to the control of the humidity of inner cylinder pilot scale sample
Sample humidity control system.
This swollen tester of sample salt when in use, can realize more environmental parameter simulations, it is possible to achieve sample is done
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 research and analyse.
In present embodiment, the sample humidity control system includes be arranged at outside a sample bucket plus water container
4, add water container 4 to be connected to inner tank theca by pipeline and connected with interior tube inner chamber.It can so realize and weigh needed for experiment
Water is added in water container 4, and then control is entered in interior tube inner chamber, realizes the adjustment control to sample humidity.During implementation,
Add water container 4 to use mounting bracket 23 to be installed on leans on current dead weight to carry out adding water moistening higher than the position at the top of sample bucket to facilitate.
Further plus water container is to water adjusting valve 27 is provided with the pipeline between sample bucket, to facilitate control plus water speed, avoid plus
Water is too fast to be caused humidity uneven and influences result of the test.
Wherein, the sample humidity control system includes an air compressor machine 5, and 5 outlet side of air compressor machine passes through gas pipeline
A temperature control expansion box 2 is connected to, the expansion box temperature control device for realizing internal temperature control is provided with temperature control expansion box 2, temperature
Control expansion box gas outlet is connected to by gas pipeline to be arranged in the air dried cell of inner cylinder inner wall, is provided with out in air dried cell
Gas port is simultaneously connected to outside sample bucket by outlet pipe 33.Air compressor machine is preferably air compressor machine of the band without hot absorption drier.
In this way, can lean on air compressor machine that dried air is pressed into temperature control expansion box, air adjustment is tried for satisfaction
Test required air pressure and temperature and then be 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 its humidity to change, the control simulation of sample humidity is better achieved, improves test simulation effect.Further,
Gas pressure regulator 40 is provided with 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 can be made to keep being scheduled between 10kPa~30kPa, required with ensureing to air-dry, and do not destroy soil sample
Structure.During implementation further, gas storage temperature sensor 1 is additionally provided with temperature control expansion box 2, is used for realization temperature control expansion box 2
The detection of interior air themperature is with conveniently regulating and controlling.
Wherein, a circulation fluid interlayer is provided with the temperature control expansion box, circulation fluid interlayer is followed by pipeline and one
Ring liquid temperature control equipment C8 circulation connections.In this way, the air in temperature control expansion box is controlled to be tried when reaching experiment by circulation fluid
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 inner sides of interior 10 1 lateral surfaces of 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 is vacantly set and structure
Into circulation fluid interlayer, support I-steel 12 is provided between interior 10 bottom surface of case and 3 inner bottom surface of 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 by pipeline and the circulation fluid temperature control equipment C8 circulation.
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
Put closing and be provided with a circle baffle 38, some ventholes are offered on baffle 38, between baffle and annular groove formed be used 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
The process of sample itself experiment can be interfered with, guarantee test result is accurately and reliably.
Wherein, baffle surface is provided with grenadine 37, can so be better protected from sample and block venthole, can also avoid
Sample enters venthole and influences test accuracy.During implementation can also further baffle using soft plastic board and inner surface and interior
Tube inner chamber surface is consistent；Installation and sealing can be conveniently realized, preferably to reduce the influence to experiment.Yet further, lead to
Sand grains is filled with 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, at utmost reduce the influence to test accuracy.As preferred sand
Grain uses the homogeneous sand grains or high rigidity sand grains of 1 millimeter of particle diameter（Such as normal sand sand grains）, the effect above can be caused to reach optimal.
Wherein, interior tube inner chamber top face has been disposed adjacent a top circulation fluid chamber, and top circulation fluid chamber passes through
Circulation fluid pipeline connects setting with circulation fluid temperature control equipment A6 circulations；One has been disposed adjacent 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 circulation
It is logical to set.
In this way, it can realize temperature gradient control respectively by the circulation fluid of different temperatures at the top and bottom of inner cylinder so that
Can more preferably actual environment situation of the simulation by the downward different buried depth stratum of earth's surface there are the temperature difference, raising it be tested during specimen test
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 form in tube inner chamber top surface, in head cover 32
Hollow set in portion forms top circulation fluid chamber, and lid periphery and interior tube inner chamber perisporium 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
With temperature sensor 16 and sample is exposed to above sample bucket with the display portion of temperature sensor 16 in installation sample, 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 instrumentation 26 that distance is moved up for detecting head cover.
So using the head cover basis as circulation fluid chamber at the top of setting, and realize salt marsh soil expansion detection at the same time
Basis, has the advantages that simple in structure, easy to detect, while can also facilitate set temperature sensor and humidity sensor with anti-
Present and detect salt marsh soil sample internal temperature and humidity condition, state modulator is accurate reliable during guarantee test.
Wherein, instrumentation 26 for 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, the top of head cover 32 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 positioned at the vertically set transmission rod 32-5 in head cover upper surface,
A horizontally disposed and lever beam 15 of the apical grafting above transmission rod is further included, lever beam one end is support end and support end upper table
Face is spacing by lever position-limit mechanism, and the lever beam other end is provided with and adds for loading the counterweight of counterweight 17 for loading end and loading end
Load plate 9.In this way, negative pressure is loaded by way of lever, first, by the size of lever principle amplification load, second, can be preferably
Load force size is constant during holding experiment, to ensure the simulation effect of constant load.During implementation further, lever limits
Position mechanism includes a fulcrum beam being horizontally placed on above lever beam, is screwed on fulcrum beam by screw thread and is vertically provided with a 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
Section, the calculating of proof load power is accurate and keeps load steady constant.During implementation, the upper surface of lever beam loading end is additionally provided with
Air level 14, can preferably judge to adjust the level of 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 loading effect.Yet further, counterweight loading disc upwardly extends the vertical hanging rod of to be formed one by upper surface middle part and is articulated in
On a hook in the middle part of hanging rod beam loading end lower surface.So ensure that the counterweight weight of loading is concentrated and be applied to the one of lever beam
On a point, beneficial to the precision for improving load simulation calculating.Yet 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 delivered 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 interior tube inner chamber perisporium form the contact that can slide up and down, under bottom cover
Side is provided with the bottom cover height adjustment mechanism that can realize that bottom cover height and position is adjusted.During implementation, 35 bottom surface of bottom cover is additionally provided with
With bottom cycle liquid chamber bottom cover circulation fluid entrance 35-1 and bottom cover circulation fluid outlet 35-2.
In this way, by bottom cover as salt marsh soil sample holding members and the basic component of bottom cycle sap cavity room, it is simple in structure
Reliably, bottom cover can be slided up and down and can adjusted by height adjustment mechanism, can conveniently be realized the adjustment of 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
Put 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 somebody with somebody 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, it can conveniently pass through adjustment of the rotation height regulation handle realization to specimen height, simple in structure, adjustment side
Just it is 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, and an altitude location ruler 21 is additionally provided with height adjustment bolt lower section, and height is fixed
Position ruler 21 one end can slide up and down to spacing 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 by direct observed reading
Height is adjusted, and then obtains specimen height.
Wherein, outer barrel includes cylindric outer barrel body and positioned at an entirety of outer barrel body bottom portion bottom in the form of annular discs
Support 19, the middle part of collet 19 is set and the threaded hole of the cooperation of height adjustment bolt 20, and two circulation liquid pipes are additionally provided with collet 19
Road via and an air outlet pipe via, collet upper surface are coaxially arranged with two circle card slots, and outer barrel body and inner cylinder are each clamped
And seal and be fixed in corresponding card slot.In this way, there is the advantages of simple in structure, installation convenient for assembly.
Wherein, the sample bucket that outer barrel is further included positioned at outer barrel body upper end covers 30, and sample bucket covers 30 level sides
To projection expose interior tube inner chamber, sample bucket capping lower surface and outer barrel body upper end and inner cylinder upper end in circular ring shape and middle part
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 with 30 adds the interface of water container pipeline and by internal connection for access
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 with the capping of sample bucket
And air dried cell is connected to by internal connecting pipe.So there is simple in structure, installation convenient for assembly and pipe arrangement
Advantage.Fixed when it is implemented, sample bucket capping lower surface has for the outer barrel fixed with outer barrel body upper end grafting sealing
With annular groove, outer barrel fixation annular groove inside has the downward annular flange of a circle, and 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 sealing of inner cylinder and outer barrel body, and it is not influenced inner cylinder moving up and down in specimen, protect
Confirmatory test precision is reliable.
In present embodiment, the inner cylinder is obtained by multiple interior shell rings 28 splicings vertically, 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 somebody with somebody 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 so so that during the swollen experiment of salt
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.
A kind of structure type during implementation as diaphragm seal 41 can be using elastic membrane and be provided separately within adjacent two
At a interior shell ring cooperation, such consumptive material is less.Can also use the cylindrical shape diaphragm seal for surrounding whole 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, circulation fluid is circulated in outer barrel inner wall with sealing intermembranous, circulation fluid
Diaphragm seal can be attached on interior bucket outer wall during circulation, so existing good sealing effect, also there is good temperature control effect, and will
The influence that sample vertically expands is preferably minimized.
In present embodiment, at least one air dried cell is correspondingly arranged on each interior shell ring and at least circumferential direction is upper uniform
Four of arrangement are used for the water inlet for adding water to sample.It so can more preferably and more uniformly improve humidity control effect.
In present embodiment, circulation fluid temperature control equipment A, circulation fluid temperature control equipment B and the circulation fluid
Temperature control equipment C uses High Precision Low Temperature groove, has the advantages of temperature control is convenient, and control accuracy is high.
The above-mentioned swollen tester of salt has the advantages that：1. realize the dry and wet of water content consecutive variations under temperature-controllable
Experiment that cyclic salt is swollen；2. realize 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 each equal able person of factor is in order to control above；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）
Any setting in altitude range.
Performance detection experiment is carried out to above-mentioned tester, result of the test shows the sample of a high 30cm, diameter 10cm
Water content drop to 3%~6% from 20% and only need 2d~4d（The time is longer when temperature is low, and temperature is in 0~5 DEG C of needs at present
6d）, it is substantially big compared with the salt bulk that monoblock type sample bucket is measured using the salt bulk that segmented sample bucket is measured, and therebetween
Gap with specimen height increase and increase, and with the increase of specimen finish and slightly have reduce.During drying and watering cycle circulation experiment
The air pressure of air in insulating box should be strictly controlled, havoc soil sample structure is crossed to avoid air pressure, preferably controls within 30kPa.
Therefore the above-mentioned swollen tester of salt can realize more environment parameter controls, test simulation effect is improved, there is structure
Simply, test accuracy is high, and sample parameter is flexibly adjustable, can test method it is more the advantages of, be highly suitable for salinized soil performance
Research.
Claims (8)
1. a kind of swollen tester experimental enviroment parameter simulation control system of salt, including temperature regulation system, temperature regulation system bag
Circulation fluid a temperature control equipment A, circulation fluid temperature control equipment A are included by between circulation fluid pipeline and outer barrel and inner cylinder
The circumferential circulation fluid chamber circulation connection that gap is formed, it is characterised in that interior tube inner chamber top face has been disposed adjacent a top
Circulation fluid chamber, top circulation fluid chamber connect setting by circulation fluid pipeline with circulation fluid temperature control equipment A circulations；
A bottom cycle sap cavity room is disposed adjacent below inner cylinder inner chamber bottom surface, bottom cycle sap cavity room passes through circulation fluid pipeline and one
A circulation fluid temperature control equipment B circulations connection is set；
Further include the sample humidity control system for being used for realization the humidity control to inner cylinder pilot scale sample；The sample humidity
Control system include one be arranged at outside sample bucket plus water container, add water container by pipeline be connected to inner tank theca and and
Interior tube inner chamber connection；
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 to be arranged in the air dried cell of inner cylinder inner wall, gas outlet is provided with air dried cell and by going out
Feed channel is connected to outside sample bucket.
2. the swollen tester experimental enviroment parameter simulation control system of salt as claimed in claim 1, it is characterised in that interior tube inner chamber
Be provided with head cover at top surface, head cover lower surface form in tube inner chamber top surface, head cover inner hollow sets to form top circulation sap cavity
Room, lid periphery and interior tube inner chamber perisporium form the contact that can slide up and down, and temperature sensor is vertically provided through on head cover
Mounting hole and humidity sensor mounting hole, temperature sensor fixing hole are used for mounting temperature sensor and cause temperature sensor
Display portion is exposed to above sample bucket, and humidity sensor mounting hole is used to install humidity sensor and causes humidity sensor dew
For above sample bucket；The instrumentation that distance is moved up for detecting head cover is additionally provided with above head cover.
3. the swollen tester experimental enviroment parameter simulation control system of salt as claimed in claim 2, it is characterised in that above head cover
It is additionally provided with the load simulating device for applying downward pressure to head cover.
4. the swollen tester experimental enviroment parameter simulation control system of salt as claimed in claim 3, it is characterised in that the load
Simulator, including positioned at the vertically set transmission rod in head cover upper surface, further include a horizontally disposed and apical grafting
Lever beam above transmission rod, lever beam one end is support end and support end upper surface is spacing by lever position-limit mechanism, lever
The beam other end is provided with counterweight loading disc for loading end and loading end.
5. the swollen tester experimental enviroment parameter simulation control system of salt as claimed in claim 2, it is characterised in that interior tube inner chamber
Bottom cover is provided with bottom surface, bottom cover upper surface forms inner cylinder inner chamber bottom surface, and bottom cover inner hollow sets to form bottom cycle sap cavity
Room, bottom cover periphery and interior tube inner chamber perisporium form the contact that can slide up and down, and bottom cover height can be realized by being provided with below bottom cover
The bottom cover height adjustment mechanism that position is adjusted.
6. the swollen tester experimental enviroment parameter simulation control system of salt as claimed in claim 5, it is characterised in that the bottom cover
Height adjustment mechanism includes a height adjustment bolt, and height adjustment bolt is vertically arranged and screw thread is screwed on cooperation at sample bucket bottom
In threaded hole among portion, height adjustment bolt upper end is rotatably engaged by bearing to be connected on bottom cover, height adjustment bolt
Lower end is provided with height regulation handle.
7. the swollen tester experimental enviroment parameter simulation control system of salt as claimed in claim 6, it is characterised in that bottom cover height
Adjusting mechanism, further including one, spaced graduated scale, graduated scale are fixed on sample gantry side by side with height adjustment bolt,
An altitude location ruler is additionally provided with height adjustment bolt lower section, altitude location ruler one end can slide up and down to spacing cooperation
On the scale, the other end rotatably coordinates company by the bearing and height adjustment bolt being fixed in height adjustment bolt
Connect.
8. the swollen tester experimental enviroment parameter simulation control system of salt as claimed in claim 1, it is characterised in that described to air-dry
Unit includes the annular groove being circumferentially disposed on inner cylinder inner wall, and the closing of annular groove notch position is provided with a circle baffle,
Some ventholes are offered on baffle, the ventilating layer for being used for connecting with gas pipeline is formed between baffle and annular groove.
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