CN105334306B - Detachable sample cage for explosive volume expansion coefficient measuring device - Google Patents
Detachable sample cage for explosive volume expansion coefficient measuring device Download PDFInfo
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- CN105334306B CN105334306B CN201510697890.0A CN201510697890A CN105334306B CN 105334306 B CN105334306 B CN 105334306B CN 201510697890 A CN201510697890 A CN 201510697890A CN 105334306 B CN105334306 B CN 105334306B
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- cover plate
- sample
- volume expansion
- cage
- liquid
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- 239000002360 explosive Substances 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 230000008961 swelling Effects 0.000 claims abstract description 30
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 claims description 43
- 239000002351 wastewater Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 13
- 239000003344 environmental pollutant Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 231100000719 pollutant Toxicity 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 229910001374 Invar Inorganic materials 0.000 claims description 4
- 238000009736 wetting Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000013215 result calculation Methods 0.000 description 1
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
- G01N33/22—Fuels; Explosives
- G01N33/227—Explosives, e.g. combustive properties thereof
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a detachable sample cage for an explosive volume expansion coefficient measuring device. The detachable sample cage is composed of a cover plate (3) and a base (8), and all parts are connected in the mode that the top of the cover plate (3) is provided with liquid flowing holes (1) which are formed in the mode of penetrating through the cover plate, the periphery of the upper end of the cover plate is provided with guide column cover plate connecting grooves (2), and the cover plate (3) and the base (8) are combined together through base connecting grooves (4) and cover plate connecting grooves (7). The detachable sample cage is suitable for the explosive volume expansion coefficient measuring device, and the problems that in an existing explosive volume expansion coefficient measuring device, measuring cannot be performed or the measuring precision is lower when the sample size is too small due to the fact that the volume expansion coefficient of a solid and the volume expansion coefficient of liquid are quite different, and swelling liquid is polluted due to the fact that explosive columns scale off are solved.
Description
Technical field
The invention belongs to explosive wastewater performance test field, relating generally to a kind of explosive wastewater coefficient of volume expansion test device use can
Dismountable sample cage, more particularly to it is a kind of too small or the not tight easily scaling-off explosive wastewater powder column of bonding detachable for volume
Sample cage.
Background technology
Explosive wastewater coefficient of volume expansion test device is a kind of based on precise laser displacement transducer and the fire of liquid swelling method
Explosive coefficient of volume expansion test device.Its operation principle is：Solid sample to be measured is completely immersed in into a kind of inertia stable in properties
In liquid, after sample infiltration completely, the liquid level height under different temperatures is measured using precise displacement sensor, using height
Degree difference calculates dilatation of the sample when heating up, so as to be calculated the coefficient of volume expansion of solid sample to be measured.Make in device
With during, the change of liquid level is expanded by liquid volume and is caused jointly with the expansion of sample solid volume, calculates sample
During the coefficient of volume expansion, the liquid level change for causing liquid volume expansion is needed to cut.Due to solid-liquid coefficient of volume expansion phase
Difference it is larger, the general liquid coefficient of volume expansion much larger than solid the coefficient of volume expansion, if therefore sample volume is too small, in sample cavity plus
The amount of liquid for entering is excessive, then the liquid level that liquid is caused after temperature is raised goes up and is far longer than caused by solid volume change
So that the accuracy relative reduction of test result.
On the other hand, present explosive wastewater powder column, especially explosive, general binder content is relatively low, grain surface it is little
Granule easily comes off, and the dregs for coming off can be polluted to swelling liquid so that the coefficient of expansion of swelling liquid changes, and needs
Frequently to change, cause the loaded down with trivial details of process of the test.
Material therefor of the present invention is invar, and its coefficient of volume expansion is minimum, about 10-6K-1, much smaller than general explosive wastewater and phase
The coefficient of volume expansion of material is closed, the measuring accuracy of small sample can be significantly improved；Circular projection on base on the one hand can
So that sample bottom surface is also fully contacted with swelling liquid, the pollutant that sample surfaces fall on the other hand can be collected, be improved swollen
The utilization number of times of profit liquid, short form test process.
The content of the invention
The technical problem to be solved in the present invention is, in the principle accurate evaluation using liquid swelling method and sign explosive wastewater heat
During expansion characteristics, because the coefficient of volume expansion differs larger between liquid and solid explosive wastewater material, existing explosive wastewater volume expansion system
Number test device is when test differs larger small grain sample with original sample cavity volume, and measuring accuracy is relatively low, test knot
Fruit repdocutbility is poor；And some explosive wastewater samples due to binder content it is too low, the easily scaling-off pollution swelling liquid of grain surface
Make swelling liquid need frequently to change, cause the problem that test process is loaded down with trivial details.In order to overcome the shortcomings of existing apparatus and defect, this
Invention offer is a kind of to be designed sizes and can collect the detachable sample cage of swelling liquid pollutant.
Coefficient of volume expansion test device is made up of with detachable sample cage cover plate and base；Cover plate is closed for one end
Interior hollow round column type, top is entered in sample cage with the liquid flowing hole for penetrating cover plate upper surface for swelling liquid；Upper surface
Surrounding carries guide pillar cover plate link slot, for being connected with explosive wastewater coefficient of volume expansion test device；Side lower end surrounding carries bottom
Seat link slot, for being connected with base；Base cross section is circle, and upper surface has circular platform, for preventing because fire is fried
The scaling-off pollutant for causing of medicine powder column flow out with swelling liquid；Internal upper bottom portion has certain amount circle projection, for making infiltration
Liquid can be fully contacted with sample bottom surface, complete wetting sample surfaces；Surrounding has cover plate link slot, for being combined with cover plate.
Entirely detachable sample cage each several part connected mode is：Cover plate is combined with base by base link slot, cover plate link slot
Together.
In the present invention, detachable sample cage bulk shape be interior hollow cylinder of the upper end with penetrance circular hole, the cylinder
In vivo footpath is equal with height, and different according to sample size, (internal diameter and wall thickness can add according to sample size can to process different size
Work) sample cage, the liquid flowing hole diameter on cover plate is adjusted according to sample cage size, generally between 2-4mm.
In the present invention, material used by whole sample cage is invar, and cover plate top carries the liquid of a number of diameter 2-3mm
Body manhole appendix, it is ensured that liquid can be flowed freely in sample cage and within the chamber；Cover plate surrounding carries guide pillar cover plate link slot, makes sample
Cage can link together with the lowering or hoisting gear of explosive wastewater coefficient of volume expansion test device, facilitate the placement and taking-up of sample cage；Bottom
With the projection that certain amount surface is circular arc, bottom is in vacant state during for making sample in sample cage on seat top,
Ensure that sample can fully be infiltrated by swelling liquid；Base upper surface has circular platform, for preventing due to explosive wastewater powder column
The scaling-off pollutant for causing flow out with swelling liquid.
In process of the test, sample is positioned on base, covers cover plate, and sample cage is put into equipped with swelling liquid jointly with sample
Chamber in, swelling liquid by liquid flowing hole enter sample cage in infiltrate sample.The present invention is used for explosive wastewater volume expansion system
The sample of number test devices is placed, solve the sample volume that cause because the solid-liquid coefficient of volume expansion is excessive it is too small when test
As a result the not high problem of degree of accuracy.Meanwhile, the scaling-off produced swelling liquid pollutant of explosive wastewater powder column can be stayed on base,
In being not easily accessible the swelling liquid of chamber, it is to avoid the problem that need to frequently change because swelling liquid pollutes, simplify and tested
Journey.
Advantages of the present invention：(1) present invention can be processed according to testing sample size, it is to avoid due to sample volume mistake
It is little, the inaccurate problem of measurement result that liquid volume is excessively caused.(2) present invention can be collected produced by easy scaling-off explosive wastewater powder column
Swelling liquid pollutant, it is to avoid need to frequently change the loaded down with trivial details problem of process of the test for causing because swelling liquid is contaminated.(3)
Material used of the invention is invar, consistent with material used by explosive wastewater coefficient of volume expansion test device inner chamber, is easy to volume calibration,
Test result calculations process will not be impacted.
Description of the drawings
Fig. 1 is the detachable sample cage schematic diagram of explosive wastewater coefficient of volume expansion test device of the present invention.1. liquid in figure
Flow orifice, 2. guide pillar cover plate link slot, 3. cover plate, 4. base link slot, 5. sample, 6. projection, 7. cover plate link slot, 8. bottom
Seat, 9. platform.
Fig. 2 is the top view of Fig. 1 cover plates.1. guide pillar cover plate link slot in figure, 2. liquid flowing hole.
Fig. 3 is the top view of base in Fig. 1.1. projection in figure, 2. cover plate link slot, 3. platform.
Specific embodiment
Below in conjunction with the accompanying drawings and preferred embodiment the present invention is described in further detail.
As shown in figure 1, the explosive wastewater coefficient of volume expansion test device using interior chamber size for φ 41mm*H 41mm is tried
Test, choose φ 21mm*H 21mm, the detachable sample cage (wherein, φ is base inner diameter, and H is interior height) of wall thickness 5mm.Test
When first cover plate 3 and base 8 are separated, sample 5 (sample size be φ 20mm*H 20mm) is placed on base, it is ensured that sample fills
Sample surfaces are not contacted with sample cage inwall when dividing expansion.Then cover plate 3 is placed on base, using link slot 4 and 7 by two
Person is fixed together, and is then fixed sample cage with explosive wastewater coefficient of volume expansion test device using guide pillar cover plate link slot 2, profit
Sample cage is put in device cavity with the lifting knob of explosive wastewater coefficient of volume expansion test device, after adding swelling liquid, i.e.,
Measurement can be started.
Sample for φ 20mm*H 20mm explosive column, same sample parallel testing 6 times, using φ 21mm*H21mm's
Test result difference when detachable sample cage and n.s cage is as shown in the table：
The coefficient of volume expansion test result of table 1
As a result show, when being tested using detachable sample cage, test result repeatability is significantly better than n.s
During cage result of the test repeatability, illustrate detachable sample cage in the less sample of test volume, can be effectively improved by
Too small in sample volume, the measurement result that liquid volume is excessively caused is inaccurate, the problem of test repeatability difference.
In process of the test, tested in the case of n.s cage, each two sample test terminate after by find it is swollen
With the presence of obvious solid particle, the swelling liquid that need to be demarcated to the coefficient of expansion of swelling liquid again or more be renewed in profit liquid
Body, increased test procedure, and process of the test is relatively complicated.When being tested using detachable sample cage, 6 tests of the sample
After end, without obvious solid particulate matter in the swelling liquid in chamber, illustrate that the detachable sample cage in the present invention can have
The rubbish in swelling liquid is remained in because explosive column is scaling-off in the collection process of the test of effect, the repetition profit of swelling liquid is made
Increased with rate, enormously simplify test procedure.
Claims (2)
1. a kind of explosive wastewater coefficient of volume expansion test device is made up of, institute with detachable sample cage cover plate [3] and base [8]
The interior hollow round column type that the cover plate [3] stated is closed for one end, top carries the liquid flowing hole [1] for penetrating cover plate, for swelling liquid
Body is entered in sample cage；Upper end surrounding carries guide pillar cover plate link slot [2], for connecting with explosive wastewater coefficient of volume expansion test device
Connect；Lower end surrounding carries base link slot [4], for being connected with base；Described base [8] cross section is circle, upper surface
There is circular platform [9], for preventing because the scaling-off pollutant for causing of explosive wastewater powder column flow out with swelling liquid, on inside bottom
There are certain amount circle projection [6], for enabling immersion liquid to be fully contacted with sample bottom surface, complete wetting sample table in portion
Face；Surrounding has cover plate link slot [7], for being combined with cover plate；Entirely detachable sample cage each several part connected mode is：Cover plate
[3] it is combined together by base link slot [4], cover plate link slot [7] with base [8]；In process of the test, sample is positioned over bottom
On seat, cover plate is covered, sample cage is put in the chamber equipped with swelling liquid jointly with sample, and swelling liquid passes through liquid flowing hole
Sample is infiltrated in sample cage.
2. explosive wastewater coefficient of volume expansion test device according to claim 1 is with detachable sample cage, it is characterised in that：
Material used by described detachable sample cage is invar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697890.0A CN105334306B (en) | 2015-10-23 | 2015-10-23 | Detachable sample cage for explosive volume expansion coefficient measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510697890.0A CN105334306B (en) | 2015-10-23 | 2015-10-23 | Detachable sample cage for explosive volume expansion coefficient measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105334306A CN105334306A (en) | 2016-02-17 |
| CN105334306B true CN105334306B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510697890.0A Expired - Fee Related CN105334306B (en) | 2015-10-23 | 2015-10-23 | Detachable sample cage for explosive volume expansion coefficient measuring device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142667B (en) * | 2018-09-05 | 2021-02-26 | 西安近代化学研究所 | Non-contact measurement method for axial and radial deformation of explosive column under temperature loading condition |
| CN109764768B (en) * | 2019-03-22 | 2024-01-23 | 中国工程物理研究院化工材料研究所 | Explosive bomb with bomb lining structure |
| CN112485289A (en) * | 2020-10-29 | 2021-03-12 | 西安近代化学研究所 | Volume irreversible growth detection device and detection method for NTO-based fusion cast explosive |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63186148A (en) * | 1987-01-28 | 1988-08-01 | Daido Steel Co Ltd | Testing method for expansion coefficient of slag |
| US6817238B2 (en) * | 2001-06-22 | 2004-11-16 | Bj Services Company | Cement expansion/contraction test apparatus |
| CN100561205C (en) * | 2007-06-06 | 2009-11-18 | 北京理工大学 | The urceolus of explosive article coefficient of linear expansion measurement mechanism |
| US8156798B1 (en) * | 2010-07-09 | 2012-04-17 | Hongfeng Bi | High pressure high temperature fluid densitometer |
| CN102221601B (en) * | 2011-06-08 | 2013-09-04 | 上海大学 | Temperature-controlled type unsaturated soil consolidometer |
| CN103278526B (en) * | 2013-05-14 | 2015-05-13 | 哈尔滨工业大学 | Asphalt volume expansion and shrinkage coefficient determinator and method |
| CN203502409U (en) * | 2013-10-24 | 2014-03-26 | 核工业北京地质研究院 | Pressure chamber for tester with high temperature expansibility and permeability |
| CN103558246B (en) * | 2013-11-08 | 2015-10-28 | 山东大学 | Road surface expansion coefficient of cement concrete proving installation and method |
| CN104007135B (en) * | 2014-06-13 | 2016-08-24 | 哈尔滨工业大学 | Earth working material change in volume method of testing |
| CN104749343B (en) * | 2015-03-17 | 2016-05-25 | 中山大学 | A kind of axle of constant volume controllable temperature is soil expansion force tester radially |
| CN104677929A (en) * | 2015-03-20 | 2015-06-03 | 中国工程物理研究院总体工程研究所 | Method for measuring volume expansion coefficient of shell |
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Granted publication date: 20170412 |