CN105628582A - Permeability test device - Google Patents
Permeability test device Download PDFInfo
- Publication number
- CN105628582A CN105628582A CN201511015580.2A CN201511015580A CN105628582A CN 105628582 A CN105628582 A CN 105628582A CN 201511015580 A CN201511015580 A CN 201511015580A CN 105628582 A CN105628582 A CN 105628582A
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- CN
- China
- Prior art keywords
- pipe
- pipe connecting
- test
- test device
- tube
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
Abstract
The invention discloses a permeability test device. The device comprises a test tube, wherein the upper end of the test tube is connected to a water tank through a first connection tube; the lower end of the test tube is connected to a water collection tank through a second connection tube; the test tube is a soft tube; both the first connection tube and the second connection tube are hard tubes; an annular groove is formed in the outer wall of each of the first connection tube and the second connection tube; two ends of the test tube are fastened in the annular groove through an elastic hoop ring; grids used for placing soil samples are paved along the cross section of the test tube; an opening with a cover is formed in the water tank. According to the permeability test device, the inner wall of the test tube can be tightly adhered to the soil samples, so that the leakage clearance is avoided; the test accuracy is improved; the permeability test device is simple in structure and convenient to operate.
Description
Technical field
The present invention relates to permeability test device.
Background technology
What traditional infiltration experiment device adopted is rigid walls, in process of the test, sample is put into device, and the case that catchments is placed on the lower section of device, to collect the water of seepage, by the Units of Account time by the water yield of soil sample, the permeability coefficient of soil sample can be calculated. But can not fit tightly between sample and rigid plane, it is easy to form gap and leak, thus had influence on the accuracy of test.
The Chinese patent that publication number is CN103411869A discloses a kind of negative-pressure penetration testing apparatus. This infiltration experiment device comprises base, soil sample ring, porous permeable stone, water storage container, electronic balance, vacuum pump, tensimeter, sealed vessel, poor by vacuumizing at soil sample two ends mineralization pressure, water permeates under the effect of pressure difference in soil sample, although this apparatus structure is simple, easy to use, but the contact surface stopping property between sample and device is inadequate, it is easy to leak, test-results impact is bigger.
Summary of the invention
For overcoming existing the problems referred to above, the present invention provides permeability test device.
The technical solution used in the present invention is:
Permeability test device, comprises test pipe, and the upper end of described test pipe is connected with water tank by the first pipe connecting, and by the 2nd pipe connecting, case is connected the lower end of described test pipe with catchmenting;
Described test pipe is flexible pipe, and described first pipe connecting and the 2nd pipe connecting are stereoplasm tube, and the outer wall of described first pipe connecting and the 2nd pipe connecting has all been offered annular groove, and the two ends of described test pipe are all fastened in described annular groove by flexible collar ring;
Described test pipe is equipped with the grid for placing soil sample along its cross section;
Described water tank is provided with band cover gab.
Further, described card garter spring be can the resilient ring of folding, one end of described card garter spring is provided with discount, and the other end is provided with buttonhole, and described card garter spring realizes folding by the cooperation of discount and buttonhole.
Further, described test pipe is rubber hose.
Further, described first pipe connecting and the 2nd pipe connecting are all synthetic glass materials.
Further, described first pipe connecting and the 2nd pipe connecting are arranged with reinforcing ring, described first pipe connecting and the 2nd pipe connecting offer the groove for loading described reinforcing ring.
Further, described grid is woven wire.
The useful effect of the present invention is embodied in:
The inner-wall surface of test pipe can fit tightly with soil sample, there will not be leak gap, it is to increase the accuracy of test, and structure is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the first pipe connecting and the front view of the 2nd pipe connecting.
Fig. 3 is the structural representation of card garter spring.
Fig. 4 is the structural representation of reinforcing ring.
Embodiment
With reference to accompanying drawing, permeability test device, comprises test pipe 1, and the upper end of described test pipe 1 is connected with water tank 3 by the first pipe connecting 2, and the lower end of described test pipe 1 is connected by the 2nd pipe connecting case 5 that catchments with 4;
Described test pipe 1 is flexible pipe, described first pipe connecting 2 and the 2nd pipe connecting 4 are stereoplasm tube, all having offered annular groove 21 on the outer wall of described first pipe connecting 2 and the 2nd pipe connecting 4, the two ends of described test pipe 1 are all fastened in described annular groove 21 by flexible collar ring 6;
Described test pipe 1 is equipped with the grid 11 for placing soil sample along its cross section;
Described water tank 3 is provided with band cover gab, and described water tank 3 and the first air compressor machine 8 are tightly connected;
Being arranged with shell 7 outside described test pipe 1, described test pipe 1 is included in the air-tight inner chamber of described shell 7 by described shell 7, and described air-tight inner chamber is connected with the 2nd air compressor machine.
Described card garter spring 6 be can the resilient ring of folding, one end of described card garter spring 6 is provided with discount 61, and the other end is provided with buttonhole 62, and described card garter spring 6 realizes folding by the cooperation of discount 61 and buttonhole 62.
Described test pipe 1 is rubber hose.
Described first pipe connecting 2 and the 2nd pipe connecting 4 are all synthetic glass materials.
Described first pipe connecting 2 and the 2nd pipe connecting 4 are arranged with reinforcing ring 9, described first pipe connecting 2 and the 2nd pipe connecting 4 offer the groove 22 for loading described reinforcing ring 9.
Described shell 7 is provided with the weather gauge 71 for measuring its air-tight inner chamber.
Described grid 11 is woven wire, and described grid 11 is equipped with filter paper, and soil sample is placed on filter paper, prevents solid particulate from falling into and catchments in case.
Reinforcing ring 9 is set in the groove 22 on the outer wall of the first pipe connecting 2 and the 2nd pipe connecting 4, plays reinforcement effect.
The two ends of described test pipe are set on the outer wall of the first pipe connecting 2 and the 2nd pipe connecting 4 and are clamped in annular groove 21 at the two ends testing pipe 1 by card garter spring 6.
During test, soil sample being placed on grid 11, the water that water tank is 3 li flows into after soil sample is permeated and catchments in case 5, flows into the permeability coefficient that the water yield catchmented in case 5 can obtain this soil sample in the Units of Account time.
Test pipe 1 is rubber hose, there is certain elasticity, when making soil sample, guarantee that the cross section shape of soil sample is identical with the cross section shape of test pipe 1, and the cross-sectional area of soil sample is slightly larger than the cross-sectional area of test pipe 1, so, soil sample and test pipe 1 shrink-fit, the surrounding of soil sample can fit tightly the inner-wall surface of test pipe 1, there will be no the space that leaks, it is to increase the accuracy of test.
First air compressor machine 8 pressurizes to water tank 3, can improve hydraulic pressure, impels the water in water tank 3 to ooze into, in soil sample, being particularly useful for the test of the less soil sample of perviousness.
After the pressure in test pipe 1 is enough big, test pipe 1 may radial direction extend out, and for preventing the appearance in seepage space, is pressurizeed in the air-tight inner chamber of shell 7 by the 2nd air compressor machine, keeps the pressure equilibrium inside and outside test pipe 1, prevents seepage space.
Content described in this specification sheets embodiment is only enumerating of the way of realization to invention design; protection scope of the present invention should not be regarded as being only limitted to the specific form of embodiment statement, and protection scope of the present invention is also and the equivalent technologies means can expected according to present inventive concept in those skilled in the art.
Claims (6)
1. permeability test device, it is characterised in that: comprising test pipe, the upper end of described test pipe is connected with water tank by the first pipe connecting, and by the 2nd pipe connecting, case is connected the lower end of described test pipe with catchmenting;
Described test pipe is flexible pipe, and described first pipe connecting and the 2nd pipe connecting are stereoplasm tube, and the outer wall of described first pipe connecting and the 2nd pipe connecting has all been offered annular groove, and the two ends of described test pipe are all fastened in described annular groove by flexible collar ring;
Described test pipe is equipped with the grid for placing soil sample along its cross section;
Described water tank is provided with band cover gab.
2. permeability test device as claimed in claim 1, it is characterised in that: described card garter spring be can the resilient ring of folding, one end of described card garter spring is provided with discount, and the other end is provided with buttonhole, and described card garter spring realizes folding by the cooperation of discount and buttonhole.
3. permeability test device as claimed in claim 2, it is characterised in that: described test pipe is rubber hose.
4. permeability test device as claimed in claim 3, it is characterised in that: described first pipe connecting and the 2nd pipe connecting are all synthetic glass materials.
5. permeability test device as claimed in claim 4, it is characterised in that: described first pipe connecting and the 2nd pipe connecting are arranged with reinforcing ring, described first pipe connecting and the 2nd pipe connecting offer the groove for loading described reinforcing ring.
6. permeability test device as claimed in claim 5, it is characterised in that: described grid is woven wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015580.2A CN105628582A (en) | 2015-12-29 | 2015-12-29 | Permeability test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015580.2A CN105628582A (en) | 2015-12-29 | 2015-12-29 | Permeability test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105628582A true CN105628582A (en) | 2016-06-01 |
Family
ID=56043719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511015580.2A Pending CN105628582A (en) | 2015-12-29 | 2015-12-29 | Permeability test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105628582A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986092A (en) * | 2021-02-07 | 2021-06-18 | 上海兴长活性炭有限公司 | Activated carbon filtration rate detection device and filtration rate detection method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100089124A1 (en) * | 2008-09-26 | 2010-04-15 | North Dakota State University | Integrated porous rigid wall and flexible wall permeability test device for soils |
| CN202793989U (en) * | 2012-09-23 | 2013-03-13 | 西安科技大学 | Light constant head permeameter for porous concrete |
| CN203732408U (en) * | 2014-03-12 | 2014-07-23 | 江苏省建筑工程质量检测中心有限公司 | Testing device for permeation coefficient of pervious concrete |
| CN104458533A (en) * | 2014-12-05 | 2015-03-25 | 南京市建筑安装工程质量检测中心 | Flexible wall permeameter and use method thereof |
| CN104655468A (en) * | 2015-03-17 | 2015-05-27 | 河海大学 | Sample preparation device and sample preparation method for sand-soil contact surface test sample as well as osmotic coefficient determination method |
-
2015
- 2015-12-29 CN CN201511015580.2A patent/CN105628582A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100089124A1 (en) * | 2008-09-26 | 2010-04-15 | North Dakota State University | Integrated porous rigid wall and flexible wall permeability test device for soils |
| CN202793989U (en) * | 2012-09-23 | 2013-03-13 | 西安科技大学 | Light constant head permeameter for porous concrete |
| CN203732408U (en) * | 2014-03-12 | 2014-07-23 | 江苏省建筑工程质量检测中心有限公司 | Testing device for permeation coefficient of pervious concrete |
| CN104458533A (en) * | 2014-12-05 | 2015-03-25 | 南京市建筑安装工程质量检测中心 | Flexible wall permeameter and use method thereof |
| CN104655468A (en) * | 2015-03-17 | 2015-05-27 | 河海大学 | Sample preparation device and sample preparation method for sand-soil contact surface test sample as well as osmotic coefficient determination method |
Non-Patent Citations (1)
| Title |
|---|
| 刘吉胜 等: "粉煤灰堆场改性黄土衬里的渗透试验研究", 《粉煤灰》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986092A (en) * | 2021-02-07 | 2021-06-18 | 上海兴长活性炭有限公司 | Activated carbon filtration rate detection device and filtration rate detection method thereof |
| CN112986092B (en) * | 2021-02-07 | 2023-01-13 | 上海兴长活性炭有限公司 | Activated carbon filtration rate detection device and filtration rate detection method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |