CN203148813U - High-pressure device for testing compressive strength of hollow microspheres under isostatic pressure by air pressure method - Google Patents
High-pressure device for testing compressive strength of hollow microspheres under isostatic pressure by air pressure method Download PDFInfo
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- CN203148813U CN203148813U CN 201220627969 CN201220627969U CN203148813U CN 203148813 U CN203148813 U CN 203148813U CN 201220627969 CN201220627969 CN 201220627969 CN 201220627969 U CN201220627969 U CN 201220627969U CN 203148813 U CN203148813 U CN 203148813U
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000004005 microsphere Substances 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims abstract description 16
- 210000004907 gland Anatomy 0.000 claims description 31
- 239000007789 gas Substances 0.000 claims description 21
- 230000003068 static effect Effects 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 12
- 238000000462 isostatic pressing Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 5
- 108010066057 cabin-1 Proteins 0.000 description 11
- 239000000843 powder Substances 0.000 description 11
- 238000012856 packing Methods 0.000 description 6
- 238000011056 performance test Methods 0.000 description 6
- 239000007769 metal material Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a high pressure device for compressive strength under atmospheric pressure method test hollow microsphere isostatic pressing, the device includes: the device comprises a high-pressure pipe cabin (1), a sealing cover (2) with a hook, a top cover (3) with threads, an O-shaped sealing ring (6), 2 high-pressure gas pressurization system connecting ports (5) and a sample storage device (8); the sealing cover with the hook and the high-pressure pipe cabin are sealed by an O-shaped sealing ring, then the sealing cover with the hook is pressed by a top cover with threads and is fixed by annular threads; the sample storage device is hung on the hook at the lower part of the hook sealing cover. The sample storage device comprises a cylinder body (13), a top cover (9) with threads, a hook ring and air holes and a bottom cover (12) with threads and hooks, wherein the top cover, the bottom cover and the cylinder body are respectively fixed through annular threads (15, 16). The device adopts little pipe diameter, high design structure, tests the isostatic pressing compressive strength of hollow microsphere with the air pressure method, and is wide to the selection of material and structural equipment and processing, easy operation.
Description
Technical field
The utility model belongs to the high pressure vessel technical field, particularly the pick-up unit of compressive strength under the static pressure such as pneumatic process test tiny balloon.
Background technology
Be the characterization value of the important mechanical property of tiny balloon powder Deng compressive strength under the static pressure.Compressive strength is based on the mensuration that the variable density of tiny balloon powder after applying certain pressure intensity carried out under the static pressure such as grade of pneumatic process mensuration tiny balloon powder.Mensuration Deng compressive strength under the static pressure has several different methods, mainly contains water (solvent) platen press, pneumatic process etc.These methods there are differences the result that different tiny balloon pore structures record.Mensuration for the tiny balloon powder adopts pneumatic process to measure relatively near true value.
Pneumatic process determinator mesohigh device and powder receptacle are the critical equipment in the pneumatic process mensuration system.Usually high-tension unit is the high pressure-volume cabin of adopting the major diameter low clearance, its material and structure equipment and processing request harshness; Compressive resistance to the preparation material requires height, more than the high pressure resistant at least 120MPa; Complex operation; Leakproofness to the syndeton in whole high pressure-volume cabin requires high.
In addition at present still unmanned high pressure-volume cabin of using little caliber, big height test tiny balloon etc. static pressure compressive strength.
The utility model content
The purpose of this utility model be to overcome in the middle of the prior art unmanned high pressure-volume cabin of using little caliber, big height still test tiny balloon etc. static pressure compressive strength, and its material of high pressure-volume cabin of existing high-tension unit major diameter low clearance and structure equipment and processing request harshness, require the leakproofness of the syndeton in high, complex operation and whole high pressure-volume cabin to require high defective to the compressive resistance of preparation material, provide a kind of hyperbaric chamber device that adopts little caliber, big height project organization be used for testing tiny balloon etc. compressive strength under the static pressure.This device is wideer to the selection of material and structure equipment and processing, is used for the compressive strength under the static pressure that waits of pneumatic process test tiny balloon.
In order to realize the purpose of this utility model, compressive strength comprises with high-tension unit under the static pressure such as pneumatic process test tiny balloon of the present utility model: high-voltage tube cabin, band hook gland bonnet, threaded top cover, O RunddichtringO, 2 gases at high pressure pressure charging system connectors and sample receptacle; With the sealing of O RunddichtringO, push down band hook gland bonnet with threaded top cover then between band hook gland bonnet and the high-voltage tube cabin, and fix with ring screw; The sample receptacle hangs on the hook of band hook gland bonnet bottom.
Described high-tension unit internal diameter is 23-25mm, and pipe thickness is generally greater than 12mm, and selection principle is as the criterion to 100Mpa to satisfy the withstand voltage scope of test be normal pressure; It highly is 200-1000mm, so that practical operation is as the criterion preferred 350-450mm.
Described gases at high pressure pressure charging system connector connects pressure transducer and forcing pump respectively.
Described sample receptacle comprises top cover and the bottom threaded and hook of cylindrical shell, threaded, hook circle and bleeder vent, and top cover and bottom and cylindrical shell are fixed with screw thread respectively.The external diameter of described sample receptacle is 15-20mm, preferred 18-20mm, and internal diameter is 10-16mm, preferred 15-16mm highly is 60-200mm; Bleeder vent diameter on the described sample receptacle top cover is 0.5-2.5mm, the quantity of bleeder vent so that sample receptacle internal pressure equate to be as the criterion with the high-tension unit internal pressure; Described sample receptacle bottom is the atresia bottom, to prevent the tiny balloon dry linting or to leak powder; Hook circle on the described sample receptacle top cover is the two circles of metal ring; Described sample receptacle is made by metal, engineering plastics or elastomeric material.
The bottom that described several sample receptacle connected modes are a last sample receptacle hooks the top cover hook circle of next sample receptacle, perhaps the metal bracelet with buckle connects between several sample receptacles, is convenient to several sample receptacles in the high-voltage tube cabin are all taken out.The quantity of described sample receptacle is selected according to the sample receptacle of tiny balloon density size and differing heights, test with the tiny balloon that adapts to different densities, and acquisition multi-group data, make it have more reliability and accuracy, generally can deposit the sample receptacle in the high high-tension unit of 450mm is 2-5.
The hook of the bottom of the hook of the gland bonnet of described high-tension unit and sample receptacle can be the hook of closure or the hook of non-closure, is preferably closed hook, can prevent coming off of sample receptacle.
Described high-tension unit is made by stainless steel material.
Getting a certain amount of tiny balloon packs in the sample receptacle, behind the cap seal, in its high-tension unit of packing into, according to producing the operation steps that gases at high pressure pressure charging system producer provides, require the selection pressure scope to carry out isostatic pressing strength tests such as tiny balloon according to the tiny balloon performance test then.
The beneficial effects of the utility model:
1. adopt high-tension unit of the present utility model to test the compressive strength under the static pressure that waits of tiny balloon with pneumatic process.
2. adopt the high pressure-volume cabin of the big height of minor diameter wideer to the selection of material and structure equipment and processing.
3. relatively low to the compressive resistance requirement of preparation high-tension unit material, satisfy high pressure resistant 100MPa and get final product with interior.
4. the leakproofness to the syndeton of whole high-tension unit requires not harsh.
5. adopt high-tension unit of the present utility model simple to operate with compressive strength under the static pressure such as grade of pneumatic process test tiny balloon.
Description of drawings
Accompanying drawing 1 is the high-tension unit of the utility model embodiment 1
Accompanying drawing 2 is sample receptacle of the present utility model
Accompanying drawing 3 is sample receptacle top cover
Accompanying drawing 4 is sample receptacle bottom
Accompanying drawing 5 is the hook circle on the sample receptacle top cover
Accompanying drawing 6 is the hook of the bottom of the hook of gland bonnet of high-tension unit and sample receptacle
Reference numeral is as follows: high-voltage tube cabin 1; Band hook gland bonnet 2; Threaded top cover 3; Hook 4; Gases at high pressure pressure charging system connector 5; O RunddichtringO 6; Ring screw 7; Sample receptacle 8; Threaded, as to link up with circle and bleeder vent top cover 9; Bleeder vent 10; Hook circle 11; Threaded and link up with bottom 12; Sample receptacle cylindrical shell 13; Hook 14; Ring screw 15; Ring screw 16; Non-closed hook 17; Closed hook 18
Embodiment
Further specify the utility model below in conjunction with accompanying drawing by embodiment, but these embodiment limit protection domain of the present utility model.
Embodiment 1
As Fig. 1, compressive strength comprises with high-tension unit under the static pressure such as pneumatic process test tiny balloon: high-voltage tube cabin 1, band hook gland bonnet 2, threaded top cover 3, O RunddichtringO 6,2 gases at high pressure pressure charging system connectors 5 and sample receptacle 8; With 6 sealings of O RunddichtringO, push down band hook gland bonnet 2 with threaded top cover 3 then between band hook gland bonnet 2 and the high-voltage tube cabin 1, and fixing with ring screw 7; Sample receptacle 8 hangs on the band hook gland bonnet 2 bottoms hook 4.The high-tension unit interior diameter is 25mm, and pipe thickness 12mm highly is 450mm.Hook 4 is non-closed hook, and gases at high pressure pressure charging system connector 5 connects pressure transducer and forcing pump respectively.The sample receptacle comprises top cover 9 and the bottom 12 threaded and hook of cylindrical shell 13, threaded, hook circle and bleeder vent, and top cover 9 and bottom 12 and cylindrical shell 13 are respectively with ring screw 15,16 fixing.The external diameter of sample receptacle 8 is 20mm, and internal diameter is 16mm, highly is 200mm; Bleeder vent 10 diameters on the sample receptacle top cover 9 are 2mm, 6 of the quantity of bleeder vent 10; Sample receptacle bottom 12 is the atresia bottom, and to prevent tiny balloon dry linting or leakage powder, the sample receptacle is 2, and the hook circle 11 on the sample receptacle top cover 9 is the two circles of metal ring, and sample receptacle 8 is made by metal material.Bottom 12 hooks 14 that 2 sample receptacle connected modes are a last sample receptacle hook the top covers 9 hook circles 11 of next sample receptacle, and high-tension unit is made by stainless steel material,
Getting about 40ml tiny balloon respectively packs in 2 sample receptacles, behind the cap seal, in its high-tension unit of packing into, according to producing the operation steps that gases at high pressure pressure charging system producer provides, require to select 10-30MPa to wait the isostatic pressing strength test according to the tiny balloon performance test then.
Embodiment 2
Compressive strength comprises with high-tension unit under the static pressure such as pneumatic process test tiny balloon: high-voltage tube cabin 1, band hook gland bonnet 2, threaded top cover 3, O RunddichtringO 6,2 gases at high pressure pressure charging system connectors 5 and sample receptacle 8; With 6 sealings of O RunddichtringO, push down band hook gland bonnet 2 with threaded top cover 3 then between band hook gland bonnet 2 and the high-voltage tube cabin 1, and fixing with ring screw 7; Sample receptacle 8 hangs on the band hook gland bonnet 2 bottoms hook 4.The high-tension unit interior diameter is 25mm, and pipe thickness 12mm highly is 450mm.Hook 4 is the oval closed hook of class, and gases at high pressure pressure charging system connector 5 connects pressure transducer and forcing pump respectively.The sample receptacle comprises top cover 9 and the bottom 12 threaded and hook of cylindrical shell 13, threaded, hook circle and bleeder vent, and top cover 9 and bottom 12 and cylindrical shell 13 are respectively with ring screw 15,16 fixing.The external diameter of sample receptacle 8 is 20mm, and internal diameter is 16mm, highly is 120mm; Bleeder vent 10 diameters on the sample receptacle top cover 9 are 2mm, 6 of the quantity of bleeder vent 10; Sample receptacle bottom 12 is the atresia bottom, and to prevent tiny balloon dry linting or leakage powder, the sample receptacle is 3, and the hook circle 11 on the sample receptacle top cover 9 is the two circles of metal ring, and sample receptacle 8 is made by metal material.The bottom hook 14 that 3 sample receptacle connected modes are a last sample receptacle hooks the top covers hook circle 11 of next sample receptacle, and high-tension unit is made by stainless steel material,
Getting about 20ml tiny balloon respectively packs in 3 sample receptacles, behind the cap seal, in its high-tension unit of packing into, according to producing the operation steps that gases at high pressure pressure charging system producer provides, require to select 10MPa-30MPa to wait the isostatic pressing strength test according to the tiny balloon performance test then.
Embodiment 3
Compressive strength comprises with high-tension unit under the static pressure such as pneumatic process test tiny balloon: high-voltage tube cabin 1, band hook gland bonnet 2, threaded top cover 3, O RunddichtringO 6,2 gases at high pressure pressure charging system connectors 5 and sample receptacle 8; With 6 sealings of O RunddichtringO, push down band hook gland bonnet 2 with threaded top cover 3 then between band hook gland bonnet 2 and the high-voltage tube cabin 1, and fixing with ring screw 7; Sample receptacle 8 hangs on the band hook gland bonnet 2 bottoms hook 4.The high-tension unit interior diameter is 25mm, and pipe thickness 20mm highly is 450mm.Hook 4 is the oval closed hook of class, and gases at high pressure pressure charging system connector 5 connects pressure transducer and forcing pump respectively.The sample receptacle comprises top cover 9 and the bottom 12 threaded and hook of cylindrical shell 13, threaded, hook circle and bleeder vent, and top cover 9 and bottom 12 and cylindrical shell 13 are respectively with ring screw 15,16 fixing.The external diameter of sample receptacle 8 is 20mm, and internal diameter is 16mm, highly is 80mm; Bleeder vent 10 diameters on the sample receptacle top cover 9 are 2mm, 6 of the quantity of bleeder vent 10; Sample receptacle bottom 12 is the atresia bottom, and to prevent tiny balloon dry linting or leakage powder, the sample receptacle is 4, and the hook circle 11 on the sample receptacle top cover 9 is the two circles of metal ring, and sample receptacle 8 is made by metal material.The bottom hook 14 that 4 sample receptacle connected modes are a last sample receptacle hooks the top covers hook circle 11 of next sample receptacle, and high-tension unit is made by stainless steel material,
Getting about 15ml tiny balloon packs in 4 sample receptacles, behind the cap seal, in its high-tension unit of packing into, according to producing the operation steps that gases at high pressure pressure charging system producer provides, require to select 30MPa-80MPa to wait the isostatic pressing strength test according to the tiny balloon performance test then.
Compressive strength comprises with high-tension unit under the static pressure such as pneumatic process test tiny balloon: high-voltage tube cabin 1, band hook gland bonnet 2, threaded top cover 3, O RunddichtringO 6,2 gases at high pressure pressure charging system connectors 5 and sample receptacle 8; With 6 sealings of O RunddichtringO, push down band hook gland bonnet 2 with threaded top cover 3 then between band hook gland bonnet 2 and the high-voltage tube cabin 1, and fixing with ring screw 7; Sample receptacle 8 hangs on the band hook gland bonnet 2 bottoms hook 4.The high-tension unit interior diameter is 23mm, and pipe thickness 20mm highly is 350mm.Hook 4 is the oval closed hook of class, and gases at high pressure pressure charging system connector 5 connects pressure transducer and forcing pump respectively.The sample receptacle comprises top cover 9 and the bottom 12 threaded and hook of cylindrical shell 13, threaded, hook circle and bleeder vent, and top cover 9 and bottom 12 and cylindrical shell 13 are respectively with ring screw 15,16 fixing.The external diameter of sample receptacle 8 is 15mm, and internal diameter is 11mm, highly is 60mm; Bleeder vent 10 diameters on the sample receptacle top cover 9 are 2mm, 4 of the quantity of bleeder vent 10; Sample receptacle bottom 12 is the atresia bottom, and to prevent tiny balloon dry linting or leakage powder, the sample receptacle is 5, and the hook circle 11 on the sample receptacle top cover 9 is the two circles of metal ring, and sample receptacle 8 is made by engineering plastic materials.The bottom hook 14 that 5 sample receptacle connected modes are a last sample receptacle hooks the top covers hook circle 11 of next sample receptacle, and high-tension unit is made by stainless steel material,
Getting about 5ml tiny balloon respectively packs in 5 sample receptacles, behind the cap seal, in its high-tension unit of packing into, according to producing the operation steps that gases at high pressure pressure charging system producer provides, require to select 30MPa-80MPa to wait the isostatic pressing strength test according to the tiny balloon performance test then.
Embodiment 5
Compressive strength comprises with high-tension unit under the static pressure such as pneumatic process test tiny balloon: high-voltage tube cabin 1, band hook gland bonnet 2, threaded top cover 3, O RunddichtringO 6,2 gases at high pressure pressure charging system connectors 5 and sample receptacle 8; With 6 sealings of O RunddichtringO, push down band hook gland bonnet 2 with threaded top cover 3 then between band hook gland bonnet 2 and the high-voltage tube cabin 1, and fixing with ring screw 7; Sample receptacle 8 hangs on the band hook gland bonnet 2 bottoms hook 4.The high-tension unit interior diameter is 25mm, and pipe thickness 15mm highly is 200mm.Hook 4 is the oval closed hook of class, and gases at high pressure pressure charging system connector 5 connects pressure transducer and forcing pump respectively.The sample receptacle comprises top cover 9 and the bottom 12 threaded and hook of cylindrical shell 13, threaded, hook circle and bleeder vent, and top cover 9 and bottom 12 and cylindrical shell 13 are respectively with ring screw 15,16 fixing.The external diameter of sample receptacle 8 is 18mm, and internal diameter is 15mm, highly is 60mm; Bleeder vent 10 diameters on the sample receptacle top cover are 2.5mm, 3 of the quantity of bleeder vent 10; Sample receptacle bottom 12 is the atresia bottom, and to prevent tiny balloon dry linting or leakage powder, the sample receptacle is 2, and the hook circle 11 on the sample receptacle top cover is the two circles of metal ring, and sample receptacle 8 is made by elastomeric material.2 sample receptacle connected modes connect for the metal bracelet with buckle, and high-tension unit is made by stainless steel material,
Getting about 10ml tiny balloon respectively packs in 2 sample receptacles, behind the cap seal, in its high-tension unit of packing into, according to producing the operation steps that gases at high pressure pressure charging system producer provides, require to select 20MPa-50MPa to wait the isostatic pressing strength test according to the tiny balloon performance test then.
The utility model is illustrated by top embodiment, but the utility model is not limited to particular example as described herein and embodiment, only be subjected to the restriction of the utility model claim content and scope, its intention contains all and is included in interior alternatives and the equivalent of spirit and scope that the utility model claim limits.
Claims (9)
1. compressive strength high-tension unit under the static pressure such as pneumatic process test tiny balloon, it is characterized in that comprising: high-voltage tube cabin (1), band are linked up with (4) gland bonnet (2), threaded top cover (3), O RunddichtringO (6), 2 gases at high pressure pressure charging system connectors (5) and sample receptacle (8);
Seal with O RunddichtringO (6) between described band hook gland bonnet (2) and high-voltage tube cabin (1), use threaded top cover (3) to push down band hook gland bonnet (2) then, and fixing with ring screw (7), sample receptacle (8) hangs on the hook (4) of band hook gland bonnet (2) bottom.
2. high-tension unit according to claim 1 is characterized in that described high-tension unit internal diameter is 23-25mm, and pipe thickness highly is 200-1000mm greater than 12mm, and described gases at high pressure pressure charging system connector (5) connects pressure transducer and forcing pump respectively; Described high-tension unit is made by stainless steel material.
3. as high-tension unit as described in the claim 2, it is characterized in that described high-tension unit height is 350-450mm.
4. high-tension unit according to claim 1, it is characterized in that described sample receptacle (8) comprises the top cover (9) of cylindrical shell (13), threaded, hook circle and bleeder vent and threaded and link up with the bottom (12) of (14), top cover (9) and bottom (12) are fixing with ring screw (15,16) respectively with cylindrical shell (13).
5. as high-tension unit as described in the claim 4, the external diameter that it is characterized in that described sample receptacle (8) is 15-20mm, and internal diameter is 10-16mm, highly is 60-200mm; Bleeder vent (10) diameter on the described sample receptacle top cover (9) is 0.5-2.5mm, the quantity of bleeder vent so that sample receptacle internal pressure equate to be as the criterion with the high-tension unit internal pressure; Described sample receptacle bottom (12) is the atresia bottom; Hook circle (11) on the described sample receptacle top cover (9) is the two circles of metal ring; Described sample receptacle (8) is made by metal, engineering plastics or elastomeric material.
6. as high-tension unit as described in claim 1 or 4, the external diameter that it is characterized in that described sample receptacle (8) is 18-20mm, and internal diameter is 15-16mm.
7. as high-tension unit as described in claim 1 or 4, it is characterized in that described sample receptacle (8) connected mode is the top cover hook circle (11) that the bottom hook (14) of a last sample receptacle hooks next sample receptacle, perhaps the metal bracelet with buckle connects between several sample receptacles.
8. as high-tension unit as described in claim 1 or 4, it is characterized in that described hook (4,14) is hook (17) or the closed hook (18) of non-closure.
9. as high-tension unit as described in claim 1 or 4, it is characterized in that described hook (4,14) is closed hook (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627969 CN203148813U (en) | 2012-11-23 | 2012-11-23 | High-pressure device for testing compressive strength of hollow microspheres under isostatic pressure by air pressure method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627969 CN203148813U (en) | 2012-11-23 | 2012-11-23 | High-pressure device for testing compressive strength of hollow microspheres under isostatic pressure by air pressure method |
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| Publication Number | Publication Date |
|---|---|
| CN203148813U true CN203148813U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220627969 Expired - Lifetime CN203148813U (en) | 2012-11-23 | 2012-11-23 | High-pressure device for testing compressive strength of hollow microspheres under isostatic pressure by air pressure method |
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| CN (1) | CN203148813U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837436A (en) * | 2012-11-23 | 2014-06-04 | 中国科学院理化技术研究所 | High-pressure device for testing compressive strength of hollow microspheres under isostatic pressure by air pressure method |
| CN104749037A (en) * | 2015-03-31 | 2015-07-01 | 山东石大油田技术服务股份有限公司 | Visible elasticity testing instrument and testing method for elastic microsphere |
| RU2650987C2 (en) * | 2016-10-05 | 2018-04-18 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Microspheres selection method by strength to set pressure |
-
2012
- 2012-11-23 CN CN 201220627969 patent/CN203148813U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837436A (en) * | 2012-11-23 | 2014-06-04 | 中国科学院理化技术研究所 | High-pressure device for testing compressive strength of hollow microspheres under isostatic pressure by air pressure method |
| CN103837436B (en) * | 2012-11-23 | 2016-08-10 | 中国科学院理化技术研究所 | High-pressure device for testing compressive strength of hollow microspheres under isostatic pressure by air pressure method |
| CN104749037A (en) * | 2015-03-31 | 2015-07-01 | 山东石大油田技术服务股份有限公司 | Visible elasticity testing instrument and testing method for elastic microsphere |
| RU2650987C2 (en) * | 2016-10-05 | 2018-04-18 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Microspheres selection method by strength to set pressure |
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Granted publication date: 20130821 |