CN1312466C - Flexible wall permeameter for measuring coefficient of permeability - Google Patents
Flexible wall permeameter for measuring coefficient of permeability Download PDFInfo
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- CN1312466C CN1312466C CNB2005100387528A CN200510038752A CN1312466C CN 1312466 C CN1312466 C CN 1312466C CN B2005100387528 A CNB2005100387528 A CN B2005100387528A CN 200510038752 A CN200510038752 A CN 200510038752A CN 1312466 C CN1312466 C CN 1312466C
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Abstract
The present invention relates to a flexible wall penetration apparatus for measuring a penetration factor, which has a structure that a pressure surrounding pipe passage, a drainage pipe passage and a water inlet pipe passage in a water power system are respectively accessed into a pressure chamber of the penetration apparatus, wherein the pressure surrounding pipe passage, the drainage pipe passage and the water inlet pipe passage are respectively connected in series with a pressure meter, an air pressure regulation value and a pressure supply device; a B body change pipe, a pressure meter, an air pressure regulation valve, a pressure supply device, a C body change pipe, a pressure meter, an air pressure regulation valve, a pressure supply device and an air pressure regulatino valve are connected with a water outlet of a water tank. The present invention has the advantage that the flexible wall penetration apparatus can measure an application water head at any time and at any place. The accuracy of the present invention can be within 5%. Water controlled by a control valve enters the pipe passages. The pressure in the pressure supply devices is displayed by the pressure meters through the regulation number value of the air pressure regulation value so as to ensure that the water in the pipe passages achieves the pressure required in a test. The present invention can quickly remove air for a long time, answers the matching of pressure variation, satisfies the accurate requirements of multitudinous water quantity measurement, and effectively avoids the leakage of the side wall of a sample. Besides, the earth sample inverse pressure in a sample chamber has rapid saturation speed and short test time.
Description
Technical field
What the present invention relates to is a kind of flexible wall permeameter of measuring infiltration coefficient, belongs to surveying instrument
Technical field.
Background technology
Prior art such as sclerine permeameter, it can't avoid sample sidewall seepage.And the soil sample back-pressure saturated velocity in the sample chamber is slow, and test period is long.
Summary of the invention
The objective of the invention is to defective at above-mentioned existence, a kind of flexible wall permeameter is proposed, it is on the basis of normal triaxial instrument, through transforming, water inlet water head equipment, water outlet water head equipment and water yield measuring equipment have been increased, and the pressure chamber is transformed, can effectively avoid sample sidewall seepage.Technical solution of the present invention: its structure is the branch Hydraulic Power System, water yield measurement system and osmometer pressure chamber three parts, the confined pressure pipeline in the Hydraulic Power System wherein, discharge pipe line, inlet pipeline inserts in the osmometer pressure chamber by operation valve respectively, be connected in series tensimeter respectively on confined pressure pipeline in the Hydraulic Power System and discharge pipe line and the inlet pipeline, the air pressure regulator valve, B body in voltage supply equipment and the water yield measurement system becomes pipe, tensimeter, the air pressure regulator valve, C body in voltage supply equipment and the water yield measurement system becomes pipe, tensimeter, the air pressure regulator valve, voltage supply equipment, the water delivering orifice of air pressure regulator valve water receiving case.Advantage of the present invention: Hydraulic Power System can satisfy in office when putting is measured the application head, and in the precision controlled 5%, has the effective measures of measuring water pressure in the deviation of regulation.The water that is stored in the water tank enters pipeline by operation valve control, and the pressure in the voltage supply equipment can be regulated by the air pressure regulator valve, and the numerical value of controlled pressure is shown by tensimeter, guarantees that the water in the pipeline reaches needed pressure in the test.The flow measuring system volume is little, in the time of growing simultaneously, quick degasification.The cooperation that response pressure changes.Do not use the rigidity flow measuring system, satisfy the accuracy requirement that the water yield in enormous quantities is measured, segment length is ± 5% during its flow measurement.The present invention can avoid sample sidewall seepage effectively.And the soil sample back-pressure saturated velocity in the sample chamber is fast, and test period is short.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention
1 ° among the figure is voltage supply equipment; The 1st, water tank; 2 is first operation valves; 3 is second operation valves; 4 is the 3rd operation valves; 5 is the 4th operation valves, the exhaust of top, pressure chamber; 6 is the 4th operation valves, enters in the fexible film chamber, bottom, pressure chamber; 7 is the 5th operation valves, enters in the fexible film chamber, top pressure chamber; 8 is the 6th operation valves, pressure chamber's base bleed; 9 is first air pressure regulator valves, is located on the confined pressure pipeline; 10 is second air pressure regulator valves, is located on the outlet pipeline; 11 is the 3rd air pressure regulator valves, is located on the inlet pipeline; 12 is first tensimeters, is located on the outlet pipeline; 13 is second tensimeters, is located on the inlet pipeline; 14 is the 3rd tensimeters, is located on the confined pressure pipeline; The 15th, the B body on the outlet pipeline becomes pipe; The 16th, the C body on the inlet pipeline becomes pipe; The 17th, the draining valve on the outlet pipeline; The 18th, the draining valve on the inlet pipeline; The 19th, inlet pipeline; The 20th, outlet pipeline; The 21st, the pressure chamber; The 22nd, axle; The 23rd, end cap; The 24th, porous plate; The 25th, sample; The 26th, pedestal; The 27th, the confined pressure pipeline.Operation valve in above-mentioned, air pressure regulator valve, B, C body become pipe, voltage supply equipment belongs to prior art.
Embodiment
Contrast accompanying drawing 1, its structure is branch Hydraulic Power System, water yield measurement system and osmometer pressure chamber 21 3 parts, wherein the confined pressure pipeline 27 in the Hydraulic Power System, discharge pipe line 20, inlet pipeline 19 insert in the osmometer pressure chambers 21 by the 3rd operation valve 4, the 5th operation valve 7, the 4th operation valve 6 respectively, 1 ° on serial connection the 3rd tensimeter 14 on the confined pressure pipeline 27 in the Hydraulic Power System, the first air pressure regulator valve 9, voltage supply equipment; B body on the discharge pipe line 20 in the serial connection water yield measurement system becomes 1 ° on pipe 15, first tensimeter 12, the second air pressure regulator valve 10, voltage supply equipment; C body on the inlet pipeline 19 in the serial connection water yield measurement system becomes 1 ° on pipe 16, second tensimeter 13, the 3rd air pressure regulator valve 11, voltage supply equipment; The water delivering orifice of the 3rd air pressure regulator valve 11 water receiving casees 1.
Pressure in the Hydraulic Power System comprises confined pressure, water feeding pressure and tail water hydraulic pressure.The water that is stored in the water tank enters pipeline by operation valve control, and the pressure in the voltage supply equipment is by the regulating action of air pressure regulator valve, and comes the numerical value of controlled pressure by tensimeter, can make the water in the pipeline reach needed pressure in the test.In office when putting measure to be used head and precision in 5%, has the measure of measuring water pressure in the deviation of regulation, and pressure chamber's head, water inlet head and water outlet head are provided, and constant head or varying head are provided.Have the ability to keep flow mobility scale through sample in ± 5%, the mensuration of flow is by the pipette or the adaptive instrument of other precision of band scale.
There are C, B body to become pipe 16,15 in the water yield measurement system.Become liquid level variation in the pipe 16,15 by C, B body, can read the amount of inlet water and the water outlet water yield.The flow measuring system volume is little, in the time of growing, fast degasification.The cooperation that response pressure changes.Without the rigidity flow measuring system, use rigid pipe such as metal tube or hard plastic tube one class.To the accuracy requirement that the water yield in enormous quantities is measured, segment length is ± 5% during its flow measurement.
Osmometer pressure chamber 21 has pressure chamber's inflow hydrograph, the inflow hydrograph exhausr port that connects the inlet pipeline 19 in the Hydraulic Power System and the pressure chamber's discharge line that is connected discharge pipe line 20, discharge line exhausr port and connects the inlet of confined pressure pipeline 27, on the end cap 23 of osmometer pressure chamber 21, establish axle 22, axle 22 is provided with sensor, between end cap 23 and the pedestal 26 two porous plates 24 is set, put sample 25 in the middle of the two porous plates 24, be enclosed within the outside of end cap 23, two porous plates 24 and pedestal 26 with flexible membrane, flexible membrane is fixed at end cap 23 and pedestal 26 places with O type circle.
During work, after sample installed, fills with water in the pressure chamber, with pressure chamber's sealing, behind the bubble in inflow hydrograph exhaust and discharge line exhaust eliminating pipeline and the sample, apply confined pressure simultaneously then, intake pressure and discharge pressure make the pressure requirement that reaches in the test.By the variation that the strain transducer that is installed on the axle is measured sample thickness, provide the data of thickness for the calculating of infiltration coefficient.Use fluid-tight a, rigid end cap and pedestal to support sample, be delivered to sample for liquid stabilising simultaneously or row provides support from sample.The diameter of end cap and pedestal or width accuracy are ± 5%.
Claims (1)
1, a kind of flexible wall permeameter of measuring infiltration coefficient, it is characterized in that branch Hydraulic Power System, water yield measurement system and osmometer pressure chamber (21) three parts, wherein the confined pressure pipeline (27) in the Hydraulic Power System, discharge pipe line (20), inlet pipeline (19) insert in the osmometer pressure chamber (21) by the 3rd operation valve (4), the 5th operation valve (7), the 4th operation valve (6) respectively; Confined pressure pipeline (27) in the Hydraulic Power System is gone up serial connection the 3rd tensimeter (14), the first air pressure regulator valve (9), voltage supply equipment (1 °); The B body that discharge pipe line (20) is gone up in the serial connection water yield measurement system becomes pipe (15), first tensimeter (12), the second air pressure regulator valve (10), voltage supply equipment (1 °); The C body that inlet pipeline (19) is gone up in the serial connection water yield measurement system becomes pipe (16), second tensimeter (13), the 3rd air pressure regulator valve (11), voltage supply equipment (1 °); The water delivering orifice of the 3rd air pressure regulator valve (11) water receiving case (1); Described osmometer pressure chamber (21) has the pressure chamber's inflow hydrograph that connects the inlet pipeline (19) in the Hydraulic Power System, inflow hydrograph exhausr port and the pressure chamber's discharge line that is connected discharge pipe line (20), the inlet of discharge line exhausr port and connection confined pressure pipeline (27), on the end cap (23) of osmometer pressure chamber (21), establish axle (22), axle (22) is provided with sensor, between end cap (23) and the pedestal (26) two porous plates (24) is set, put sample (25) in the middle of the two porous plates (24), be enclosed within end cap (23) with flexible membrane, the outside of two porous plates (24) and pedestal (26), flexible membrane is located to be fixed at end cap (23) and pedestal (26) with O type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100387528A CN1312466C (en) | 2005-04-07 | 2005-04-07 | Flexible wall permeameter for measuring coefficient of permeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100387528A CN1312466C (en) | 2005-04-07 | 2005-04-07 | Flexible wall permeameter for measuring coefficient of permeability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1670506A CN1670506A (en) | 2005-09-21 |
| CN1312466C true CN1312466C (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100387528A Expired - Fee Related CN1312466C (en) | 2005-04-07 | 2005-04-07 | Flexible wall permeameter for measuring coefficient of permeability |
Country Status (1)
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| CN (1) | CN1312466C (en) |
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| CN103808635B (en) * | 2014-01-20 | 2014-12-10 | 浙江大学 | Device and method for measuring water diffusion rate in porous medium |
| CN104007051A (en) * | 2014-06-12 | 2014-08-27 | 华侨大学 | Ultrasonic control earth pillar pressure chamber system |
| CN104390863B (en) * | 2014-11-25 | 2017-02-01 | 河海大学 | Flexible impervious body joint structure hydraulic dynamic tester and test method |
| 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 |
| CN104535724B (en) * | 2014-12-29 | 2016-02-24 | 中国石油大学(华东) | Measure the device and method of supercritical carbon dioxide fracturing fluid leak coefficient |
| CN104677803B (en) * | 2015-03-12 | 2017-10-10 | 河南理工大学 | Often, varying head is combined pervasion test device |
| CN105486843A (en) * | 2016-01-27 | 2016-04-13 | 河北建筑工程学院 | Soil body permeation-adsorption tester and testing method thereof |
| CN105806766B (en) * | 2016-04-19 | 2019-01-18 | 兰州大学 | A kind of flexible wall permeameter for surveying body change |
| CN106840998A (en) * | 2017-01-06 | 2017-06-13 | 浙江大学城市学院 | The concrete pressure infiltration experiment device and its operating method of a kind of water temp adjustable |
| CN107219160B (en) * | 2017-05-26 | 2019-07-30 | 兰州大学 | A kind of intelligent geotechnique's infiltration shearing test system |
| CN108680480A (en) * | 2018-04-18 | 2018-10-19 | 同济大学 | A kind of unsaturation coarse-grained soil permeameter and its test method |
| CN110160928B (en) * | 2019-05-22 | 2021-06-08 | 同济大学 | Multi-connection flexible wall permeameter for realizing continuous permeation of two solutions and use method |
| CN110542636B (en) * | 2019-09-26 | 2024-04-16 | 浙江工业大学 | Method for measuring permeability coefficient of partially saturated cement-based material and test device thereof |
| CN112378829A (en) * | 2020-10-10 | 2021-02-19 | 扬州大学 | Variable-temperature flexible wall permeameter |
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Granted publication date: 20070425 Termination date: 20110407 |