CN206096001U

CN206096001U - Simulating measurement setup

Info

Publication number: CN206096001U
Application number: CN201621078711.1U
Authority: CN
Inventors: 徐云山; 曾召田; 范理云; 吕海波; 李其林; 刘方毅
Original assignee: Guilin University of Technology
Current assignee: Guilin University of Technology
Priority date: 2016-09-26
Filing date: 2016-09-26
Publication date: 2017-04-12
Anticipated expiration: 2026-09-26

Abstract

The utility model discloses a simulating measurement setup. This simulating measurement setup includes high temperature and low temperature alternation damp heat test chamber, thermal probe and KD2 pro thermal characteristics assay appearance including system appearance pipe, outer extension, metal pole and small -size compaction device, testing system, and system appearance internal diameter of pipe is 55.0mm, highly is 90.0mm, wall thickness 3.0mm, it is 55.0mm to extend the internal diameter of pipe outward, highly is 30.0mm, wall thickness 3.0mm, small -size compaction device comprises base and drive hammer, and the diameter of base is 53.0mm, highly is 20.0mm, and the diameter of drive hammer is 20.0mm, highly is 60.0mm, and the base is even as an organic whole with the metal pole, and the cover is intraductal system appearance, and the drive hammer middle part sets up little round hole to little round hole through the middle part overlaps on the metal pole just, high temperature and low temperature alternation damp heat test chamber's inside is provided with horizontally stainless steel fixture, and the thermal probe passes high temperature and low temperature alternation damp heat test chamber's lateral wall and is connected with KD2 pro thermal characteristics analysis appearance through the probe line. The device of the utility model is simple in structure, the equipment is convenient, and simulation tests precision as a result are higher.

Description

A kind of simulating test device

Technical field

The utility model belongs to Geotechnical Engineering heat analysis technical field of measurement and test, more particularly to a kind of simulating test device.

Background technology

The thermal physical property parameter of the soil body mainly includes thermal conductivity, specific heat capacity and the thermal diffusivity of the soil body, and they are in engineer applied In in occupation of very important position, for example need the engineering of heat insulation technology, the hypogee of closing, at the heat of Polluted Soil Reason, the design and placement of the useless disposal facility of natural gas, petroleum pipeline and core, embedded, the foundation improvement of heating and cooling of cable Technology, the exploration digging and the development and application of shallow layer geothermal energy etc. of natural gas, coal and oil.But will be more in Practical Project The hot physical property of the soil body is accurately obtained, mostly by means of Indoor Thermal physical property test（Because Practical Project environment is more complicated, and survey in situ The disturbance of examination technology is big, have hysteresis quality, time-consuming, high cost）.Particularly, the different thermal environments of simulation at present（Mainly thermic load）Under The laboratory test of the hot physical property of the soil body is rarely reported, this is because in practical engineering application, thermal environment complicated and changeable is often room One of factor of the more difficult simulation of interior hot physical property test, but impact of the difference of thermal environment to the hot physical property of the soil body can not be ignored （Correlative study shows that different thermal environments have large effect to the hot physical property of the soil body）.Therefore, it is possible to the different thermic loads of true simulation Environment just seems significant, more accurately recognizes so as to have to the hot physical property of the soil body under concrete engineering.

The content of the invention

The purpose of this utility model is to provide a kind of simulating test device, to solve above-mentioned background technology in propose ask Topic.

What the utility model was realized in：

A kind of simulating test device, including sample-preparing system and pilot system, sample-preparing system include sample preparation pipe, outer extension, Metallic rod and small-sized ramming device, pilot system includes GDJS, thermal probe and KD2 Pro Thermal characteristic analysis Instrument, sample preparation bore is 55.0mm, is highly 90.0mm, wall thickness 3.0mm；Outer extension bore is 55.0mm, is highly 30.0mm, wall thickness 3.0mm；Small-sized ramming device is made up of base and hammer, a diameter of 53.0mm of base, is highly 20.0mm, A diameter of 20.0mm of hammer, is highly 60.0mm, and base is connected as a single entity with metallic rod, and is enclosed within sample preparation pipe, hammer middle part Small sircle hole is set, and is enclosed within just in metallic rod by the small sircle hole at middle part；And supporting outer extension is then coaxial line direction It is stacked on sample preparation pipe, GDJS is internally provided with horizontal stainless steel stent, and thermal probe passes through probe Line is connected through the side wall of GDJS with KD2 Pro Thermal characteristic analysis instrument, high/low temperature cyclic damp heat test A length of 600.0mm of case, a width of 500.0mm, a height of 800.0mm.

The utility model apparatus structure is simple, and easy to assembly, simulation test result precision is higher, can be Geotechnical Engineering heat The research of analysis field provides facility with application, is easy to engineering application and large-scale promotion.

Description of the drawings

Fig. 1 is the front view of sample-preparing system in simulating test device of the present utility model.

Fig. 2 is the top view of sample-preparing system in simulating test device of the present utility model.

Fig. 3 is the schematic diagram of pilot system in simulating test device of the present utility model.

Mark in figure：1- bases；2- hammers；3- sample preparation pipes；The outer extensions of 4-；5- soil body samples；6- thermal probes；7- height Warm alternating temperature humidity test chamber；8-KD2 Pro Thermal characteristic analysis instrument；9- stainless steel stents.

Fig. 4 is the thermic load analog result in the utility model embodiment obtained by simulating test device.

Fig. 5 is the result that simulating test device is tested the hot physical property of Guilin red soil in the utility model embodiment.

Specific embodiment

Embodiment：

The present embodiment is by taking the hot physical property measurement test that Guilin red soil is under a kind of thermic load operating mode as an example.

A kind of simulating test device, including sample-preparing system and pilot system, sample-preparing system is used for completing the system of soil body sample 5 Standby, pilot system is used for completing the test of the thermal physical property parameter of soil body sample 5 under different thermic loads；Wherein, sample-preparing system includes system Sample pipe 3, outer extension 4, metallic rod and small-sized ramming device, sample preparation pipe 3 is processed into using pvc pipe, and internal diameter is 55.0mm, height For 90.0mm, wall thickness 3.0mm；Outer extension 4 is processed into using pvc pipe, and internal diameter is 55.0mm, is highly 30.0mm, wall thickness 3.0mm；Small-sized ramming device is made up of base 1 and hammer 2, a diameter of 53.0mm of base 1, is highly 20.0mm, hammer 2 it is straight Footpath is 20.0mm, is highly 60.0mm, and base 1 and hammer 2 are made using stainless steel material, and base 1 is welded in metallic rod, And be enclosed within sample preparation pipe 3, the middle part of hammer 2 arranges small sircle hole, and is enclosed within just in metallic rod by the small sircle hole at middle part, can be certainly By sliding up and down；And outer extension 4 is then coaxial line direction is stacked on sample preparation pipe 3, tightened with rubber membrane；Sample preparation pipe 3 is provided Hit in real sample making course to the constraint of the shape of soil body sample 5 and volume, strictly control soil body sample 5 in sample making course just Beginning dry density and moisture content, and outer extension 4 primarily serves the function that auxiliary hits sample, i.e., during sample is hit in layering, loosely Soil sample often exceed sample preparation pipe 3, supporting outer extension 4 is stacked on sample preparation pipe 3 and avoids loose soil sample from being scattered sample preparation Pipe 3, it is ensured that the precision of sample making course and sample preparation are convenient；The effect of small-sized ramming device is disposed in loose soil sample that it is realized to hit Real purpose, i.e., do the movement of falling object and produce impulsive force to base such that it is able to act on loose soil sample by hammer lifting Real purpose is hit in upper realization；Pilot system includes GDJS 7, thermal probe 6 and KD2 Pro Thermal characteristic analysis Instrument 8, GDJS 7 is internally provided with horizontal stainless steel stent 9, and soil body sample 5 is housed for placing Sample preparation pipe 3, thermal probe 6 by line probe through GDJS 7 side wall and KD2 Pro Thermal characteristic analysis Instrument 8 connects, and the effect of KD2 Pro Thermal characteristic analysis instrument 8 is the thermal physical property parameter for testing soil body sample 5, i.e., inserted by thermal probe 6 Enter to the middle of soil body sample 5 and test its thermal physical property parameter, and KD2 Pro Thermal characteristic analysis instrument 8 is fed back to by line probe, and GDJS 7 is mainly to provide the heat load environment of demand, i.e., by temperature programmed control function by test Demand arranges different thermic loads, and so as to simulate different thermal environment operating modes, GDJS 7 can be segmented volume Cheng Yange Control experiments the temperature inside the box changes speed, range of temperature, to realize approximate simulation major part actual heating load work Condition, a length of 600.0mm of GDJS 7, a width of 500.0mm, a height of 800.0mm.

Test is followed the steps below using the simulating test device in the present embodiment：

(1) according to planning of experiments needs, the Guilin red soil that scene is fetched air-dry after grind dissipated 2mm sieve it is standby.

(2) air-dry as needed for the admaic earth dry density and moisture content of design calculate the soil body sample 5 for preparing a sample preparation pipe The quality and amount of water of soil, after soil is placed in plastic tub with the uniform sprinkling of sprayer layering, is tightened with plastic foil, soaks a daytime At night, make porous media uniform.

(3) soil body sample 5 is prepared using small-sized ramming device, circadian soil sample will be soaked and pour sample preparation pipe 3 in four times, Often pour into and once hit reality with small-sized ramming device（First soil sample surface layer is spread out into even then small-sized ramming device base 1 is placed on it, pushed away Dynamic hammer 2 hits real sample until sample face reaches predetermined height）, next layer hits before reality and first surface layer should be carried out " plucking "（Protect Card soil body sample 5 occurs without lamination）, it is to be particularly noted that last layer of soil sample is hit in real time, should first by outer extension 4 It is enclosed within sample preparation pipe 3, then soil sample is poured into before repeating in sample preparation pipe 3 hits positive activity（Loose soil sample is avoided to trickle down sample preparation Outside pipe 3）.

(4) center of soil body sample 5 for preparing the inserting step of thermal probe 6 (3) simultaneously seal approach is carried out（See Fig. 3）, 24 are conserved at room temperature on the stainless steel stent 9 that finally device for connecting is placed in GDJS 7 Hour.

(5) repeat step (1) ~ (4), prepare respectively same batch sample, carry out the heat under following setting thermic load operating mode Physical property measurement is tested.

(6) by the temperature control programing function of GDJS 7, high/low temperature cyclic damp heat test is set Case 7 is run by following thermic load（, in formulaTFor the temperature in chamber 7, Unit for DEG C,tFor run time, unit ish。）, this thermic load operating mode describes temperature and first increases linearly over time, when Temperature keeps temperature-constant operation when reaching a certain setting maximum.Thermic load operating mode runs after setting completed high/low temperature Alternate hot and humid Chamber 7.

(7) by the thermal physical property parameter of the Real-time Collection soil body sample of KD2 Pro Thermal characteristic analysis instrument 8（Including thermal conductivity, heat The initial temperature of diffusivity, specific heat capacity, thermal resistance and the soil body）And make a record work.

Thermal physical property parameter test result of the device of the present embodiment to Guilin red soil sample under setting thermic load operating mode Precision is higher, the thermic load being such as closer to（Temperature）Lower thermal physical property parameter still can be distinguished, and can preferably analyze different thermic loads The Changing Pattern of the hot physical property of lower soil sample；And the initial temperature test result of KD2 Pro Thermal characteristic analysis instrument is with our default heat Load（Temperature）Change than more consistent, it is seen that the different thermic load operating modes of experimental rig simulation compare accurately and reliably；Therefore, should Device can be generalized in the thermoanalytical application of Geotechnical Engineering.

Claims

1. a kind of simulating test device, it is characterised in that the simulating test device includes sample-preparing system and pilot system, sample preparation system System includes sample preparation pipe (3), outer extension (4), metallic rod and small-sized ramming device, and pilot system includes high/low temperature cyclic damp heat test Case (7), thermal probe (6) and KD2 Pro Thermal characteristic analysis instrument (8), sample preparation pipe (3) internal diameter is 55.0mm, is highly 90.0mm, wall Thick 3.0mm；Outer extension (4) internal diameter is 55.0mm, is highly 30.0mm, wall thickness 3.0mm；Small-sized ramming device by base (1) and Hammer (2) is constituted, and a diameter of 53.0mm of base (1) is highly 20.0mm, and a diameter of 20.0mm of hammer (2) is highly 60.0mm, base (1) is connected as a single entity with metallic rod, and is enclosed within sample preparation pipe (3), and hammer (2) middle part arranges small sircle hole, and passes through The small sircle hole at middle part is enclosed within metallic rod just；And outer extension (4) to be then coaxial line direction be stacked on sample preparation pipe (3), height Warm alternating temperature humidity test chamber (7) is internally provided with horizontal stainless steel stent (9), and thermal probe (6) is by line probe through height The side wall of low temperature alternating temperature humidity test chamber (7) is connected with KD2 Pro Thermal characteristic analysis instrument (8), GDJS (7) a length of 600.0mm, a width of 500.0mm, a height of 800.0mm.