CN105334306A - 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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- CN105334306A CN105334306A CN201510697890.0A CN201510697890A CN105334306A CN 105334306 A CN105334306 A CN 105334306A CN 201510697890 A CN201510697890 A CN 201510697890A CN 105334306 A CN105334306 A CN 105334306A
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- cage
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- 239000002360 explosive Substances 0.000 title claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 59
- 230000008961 swelling Effects 0.000 claims abstract description 33
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 claims description 30
- 239000002351 wastewater Substances 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 9
- 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
- 229910001374 Invar Inorganic materials 0.000 claims description 4
- 238000009736 wetting Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 9
- 239000011230 binding agent Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment 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
- 238000004064 recycling 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, relate generally to the detachable sample cage of a kind of explosive wastewater coefficient of volumetric expansion proving installation, particularly relate to a kind of for volume too small or bonding closely easily do not fall the detachable sample cage of the explosive wastewater powder column of slag.
Background technology
Explosive wastewater coefficient of volumetric expansion proving installation is a kind of explosive wastewater coefficient of volumetric expansion proving installation based on precise laser displacement transducer and liquid swelling method.Its principle of work is: immersed by solid sample to be measured in a kind of inert fluid of stable in properties completely, infiltrate completely until sample, liquid level height under utilizing precise displacement sensor to measure different temperatures, utilize the dilatation of difference in height calculation sample when heating up, thus calculate the coefficient of volumetric expansion of solid sample to be measured.In device use procedure, the change of liquid level is expanded by liquid volume and sample solid volume expands causes jointly, and during calculation sample coefficient of volumetric expansion, the liquid level change that needing expands liquid volume causes cuts.Because solid-liquid coefficient of volumetric expansion difference is larger, general liquid bulk expansion coefficient is much larger than the coefficient of volumetric expansion of solid, if therefore sample volume is too small, the amount of liquid added in sample cavity is too much, then temperature raise after the liquid level that causes of liquid go up and be far longer than that solid volume change causes, the accuracy of test result is reduced relatively.
On the other hand, present explosive wastewater powder column, especially explosive, general binder content is lower, and the granule of grain surface easily comes off, and the dregs come off can pollute swelling liquid, the expansion coefficient of swelling liquid is changed, 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 volumetric expansion is minimum, is about 10
-6k
-1, much smaller than the coefficient of volumetric expansion of general explosive wastewater and associated materials, the measuring accuracy of small sample can be significantly improved; Circular projection on base can make sample bottom surface also fully contact with swelling liquid on the one hand, can collect the pollutant that sample surfaces falls on the other hand, and that improves swelling liquid utilizes number of times, short form test process.
Summary of the invention
The technical problem to be solved in the present invention is, when utilizing liquid swelling ratio juris accurate evaluation and characterizing explosive wastewater thermal expansion character, because between liquid with solid explosive wastewater material, coefficient of volumetric expansion differs larger, existing explosive wastewater coefficient of volumetric expansion proving installation is when test differs larger little powder column sample with original sample cavity volume, measuring accuracy is lower, and test result repdocutbility is poor; And some explosive wastewater sample due to binder content too low, grain surface easily falls slag and pollutes swelling liquid and makes swelling liquid need frequent replacing, causes the problem that test process is loaded down with trivial details.In order to overcome deficiency and the defect of existing apparatus, the invention provides a kind of detachable sample cage designing sizes and swelling liquid pollutant can be collected.
The detachable sample cage of coefficient of volumetric expansion proving installation, is made up of cover plate and base; Cover plate is the interior hollow round column type that one end has been sealed, and top, with the liquid flowing hole penetrating cover plate upper surface, enters in sample cage for swelling liquid; Upper surface surrounding with guide pillar cover plate link slot, for being connected with explosive wastewater coefficient of volumetric expansion proving installation; Lower end, side surrounding with base link slot, for being connected with base; Base xsect is circular, and upper surface has circular platform, flows out because explosive wastewater powder column falls the pollutant that slag causes for preventing with swelling liquid; Inner upper bottom portion has the circular projection of some, for enabling infiltrate body fully contact with sample bottom surface, and complete wetting sample surfaces; Surrounding has cover plate link slot, for being combined with cover plate.Whole detachable sample cage each several part connected mode is: cover plate and base are combined by base link slot, cover plate link slot.
In the present invention, detachable sample cage bulk shape is the interior hollow cylinder of upper end band penetrability circular hole, this cylinder inner diameter is equal with height, size is different per sample, different size (internal diameter and wall thickness all can per sample dimensioned) sample cage can be processed, the cage size adjustment per sample of liquid flow bore dia on cover plate, is generally between 2-4mm.
In the present invention, whole sample cage material used is invar, and cover plate top, with the liquid manhole appendix of the diameter 2-3mm of some, ensures that liquid can flow freely in sample cage and chamber; Cover plate surrounding, with guide pillar cover plate link slot, makes sample cage can link together with the jacking gear of explosive wastewater coefficient of volumetric expansion proving installation, facilitates placement and the taking-up of sample cage; Base top is the projection of circular arc with some surfaces, is in vacant state bottom during for making sample in sample cage, ensures that sample fully can be infiltrated by swelling liquid; Base upper surface has circular platform, flows out because explosive wastewater powder column falls the pollutant that slag causes for preventing with swelling liquid.
In process of the test, sample is positioned on base, covers cover plate, and the chamber that swelling liquid is housed put into jointly by sample cage and sample, and swelling liquid is entered in sample cage by liquid flowing hole and infiltrates sample.The present invention places for the sample of explosive wastewater coefficient of volumetric expansion proving installation, solves the problem that when sample volume that is that cause is too small because solid-liquid coefficient of volumetric expansion is excessive, test result degree of accuracy is not high.Meanwhile, explosive wastewater powder column falls the swelling liquid pollutant that slag produces and can stay on base, not easily enters in the swelling liquid of chamber, avoids and needs the frequent problem changed because of swelling liquid contamination, simplify process of the test.
Advantage of the present invention: (1) the present invention can process according to testing sample size, avoids because sample volume is too small, the inaccurate problem of the measurement result that liquid volume too much causes.(2) the present invention can collect the swelling liquid pollutant easily falling slag explosive wastewater powder column and produce, and avoids because swelling liquid is contaminated and needs frequently to change the loaded down with trivial details problem of process of the test caused.(3) the present invention's material used is invar, consistent with explosive wastewater coefficient of volumetric expansion proving installation inner chamber material used, is convenient to volume calibration, can not impacts test result calculations process.
Accompanying drawing explanation
Fig. 1 is the detachable sample cage schematic diagram of explosive wastewater coefficient of volumetric expansion proving installation of the present invention.1. liquid flowing holes in figure, 2. guide pillar cover plate link slot, 3. cover plate, 4. base link slot, 5. sample, 6. projection, 7. cover plate link slot, 8. base, 9. platform.
Fig. 2 is the vertical view of Fig. 1 cover plate.1. guide pillar cover plate link slots in figure, 2. liquid flowing hole.
Fig. 3 is the vertical view of base in Fig. 1.1. projections in figure, 2. cover plate link slot, 3. platform.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in further detail.
As shown in Figure 1, the explosive wastewater coefficient of volumetric expansion proving installation utilizing inner cavity size to be φ 41mm*H41mm is tested, and chooses φ 21mm*H21mm, the detachable sample cage (wherein, φ is base inner diameter, and H is interior height) of wall thickness 5mm.First cover plate 3 and base 8 are separated during test, be placed on base by sample 5 (sample size is φ 20mm*H20mm), when ensureing that sample fully expands, sample surfaces does not contact with sample cage inwall.Then cover plate 3 is placed on base, link slot 4 and 7 is utilized both to be fixed together, then guide pillar cover plate link slot 2 is utilized sample cage and explosive wastewater coefficient of volumetric expansion proving installation to be fixed, utilize the lifting knob of explosive wastewater coefficient of volumetric expansion proving installation by sample cage embedding device cavity, after adding swelling liquid, can start to measure.
Sample is the explosive column of φ 20mm*H20mm, same sample parallel testing 6 times, utilizes test result when the detachable sample cage of φ 21mm*H21mm and n.s. cage as shown in the table respectively:
Table 1 coefficient of volumetric expansion test result
Result shows, when utilizing detachable sample cage to test, test result repeatability is significantly better than test findings repeatability during n.s. cage, illustrate that detachable sample cage is when the sample that test volume is less, can effectively improve because sample volume is too small, the measurement result that liquid volume too much causes is inaccurate, the problem of test repeatability difference.
In process of the test, test when n.s. cage, can find in swelling liquid, have obvious solid particle to exist after every two sample tests terminate, the swelling liquid that need again demarcate the expansion coefficient of swelling liquid or more renew, add test procedure, process of the test is comparatively loaded down with trivial details.When utilizing detachable sample cage to test, after 6 tests of this sample terminate, without obvious solid particulate matter in swelling liquid in chamber, illustrate that the detachable sample cage in the present invention effectively can collect in process of the test the rubbish remained in because explosive column falls slag in swelling liquid, the recycling rate of waterused of swelling liquid is increased, enormously simplify test procedure.
Claims (2)
1. the detachable sample cage of explosive wastewater coefficient of volumetric expansion proving installation, be made up of cover plate [3] and base [8], described cover plate [3] for one end sealed in hollow round column type, top, with the liquid flowing hole [1] penetrating cover plate, enters in sample cage for swelling liquid; Upper end surrounding with guide pillar cover plate link slot [2], for being connected with explosive wastewater coefficient of volumetric expansion proving installation; Lower end surrounding with base link slot [4], for being connected with base; Described base [8] xsect is circular, upper surface has circular platform [9], flow out with swelling liquid because explosive wastewater powder column falls the pollutant that slag causes for preventing, inner upper bottom portion has the circular projection [6] of some, for enabling infiltrate body fully contact with sample bottom surface, complete wetting sample surfaces; Surrounding has cover plate link slot [7], for being combined with cover plate; Whole detachable sample cage each several part connected mode is: cover plate [3] and base [8] are combined by base link slot [4], cover plate link slot [7]; In process of the test, sample is positioned on base, covers cover plate, and the chamber that swelling liquid is housed put into jointly by sample cage and sample, and swelling liquid is entered in sample cage by liquid flowing hole and infiltrates sample; The present invention places for the sample of explosive wastewater coefficient of volumetric expansion proving installation, solves the not high and explosive wastewater powder column of test result degree of accuracy when sample volume that is that cause is too small because solid-liquid coefficient of volumetric expansion is excessive and falls the problem that slag pollutes swelling liquid.
2. the detachable sample cage of explosive wastewater coefficient of volumetric expansion proving installation according to claim 1, is characterized in that: described detachable sample cage material used 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 |
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| 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 |
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| Publication Number | Publication Date |
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| CN105334306A true CN105334306A (en) | 2016-02-17 |
| CN105334306B CN105334306B (en) | 2017-04-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142667A (en) * | 2018-09-05 | 2019-01-04 | 西安近代化学研究所 | Explosive column axis radial deformation contactless measurement under a kind of temperature loading environment |
| CN109764768A (en) * | 2019-03-22 | 2019-05-17 | 中国工程物理研究院化工材料研究所 | A kind of explosive bomb with bullet 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142667A (en) * | 2018-09-05 | 2019-01-04 | 西安近代化学研究所 | Explosive column axis radial deformation contactless measurement under a kind of temperature loading environment |
| 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 |
| CN109764768A (en) * | 2019-03-22 | 2019-05-17 | 中国工程物理研究院化工材料研究所 | A kind of explosive bomb with bullet lining structure |
| 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 |
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| CN105334306B (en) | 2017-04-12 |
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