CN202166597U - Rapid testing device for permeability of rock - Google Patents
Rapid testing device for permeability of rock Download PDFInfo
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- CN202166597U CN202166597U CN2011202783385U CN201120278338U CN202166597U CN 202166597 U CN202166597 U CN 202166597U CN 2011202783385 U CN2011202783385 U CN 2011202783385U CN 201120278338 U CN201120278338 U CN 201120278338U CN 202166597 U CN202166597 U CN 202166597U
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Abstract
The utility model relates to a rapid testing device for the permeability of a rock. The rapid testing device is composed of an axial loading mechanism, at least one permeameter, a permeation loop and a confining pressure loop, wherein the permeameter(s) is/are arranged on the axial loading mechanism; the permeation loop and the confining pressure loop are connected with the permeameter(s); the permeameter consists of a cylinder barrel, a piston, a bottom board, a pressure head, a water permeable board and a rock sample; and the axial loading mechanism consists of a support, a screw rod, a dial gauge and a cushion block which is provided with a thrust bearing. In the rapid testing device, a second plunger pump supplies confining pressure for the permeameter(s), and a plunger pump and/or a hand pump supply (supplies) permeation differential pressure for the permeameter(s). The rapid testing device can be used for realizing permeability test for a plurality of rocks, thereby shortening the testing time and lowering the testing cost. The rapid testing machine is simple in operation, has reliable property, can be transported by a vehicle to the designated site for testing and has wide practicability.
Description
Technical field
The utility model relates to a kind of test unit of rock permeability characteristic, is used for testing fast the permeance property parameter of rock.
Background technology
The test of ground class material Penetration Signature is divided into on-the-spot test and laboratory examination two big classes.Although there is significant difference in the Penetration Signature of rock sample and rock mass, the infiltrative laboratory examination of rock sample is still the main method of present test rock mass Penetration Signature.The test that now current rock sample perviousness laboratory test methods and existing patented technology all are conceived to monolithic rock sample Penetration Signature, the Penetration Signature that can not test the polylith rock sample simultaneously, it is longer to accomplish the required permeability test cycle of Geotechnical Engineering.
In the test of present rock sample Penetration Signature, supercharger is generally adopted in the injection of permeation liquid.Because the restriction of the stroke of supercharger, time of penetration is shorter, and pressure reduction did not reach stationary value yet when permeability test finished sometimes.
Summary of the invention
The purpose of the utility model provides a kind of rock permeability characteristic short-time test device, simultaneously the polylith rock sample is carried out testing permeability.
The rock permeability characteristic short-time test device of the utility model is by an axial load maintainer, is installed at least one permeameter on the said axial load maintainer and the infiltration loop and the confined pressure loop that are connected on the permeameter constitute.
Said permeameter is made up of cylinder barrel, piston, base plate, pressure head, porous disc and rock sample, and the cylinder barrel upper end is provided with piston, and base plate is fixedly connected on the bottom of cylinder barrel; Two ends are fixed with respectively between rock sample and the inner wall of cylinder of porous disc and pressure head and keep certain annular gap to be placed in the cylinder barrel; The internal diameter of said rock sample is coaxial with the internal diameter of cylinder barrel, and two pressure heads that are positioned at the rock sample two ends contact with the base plate face with piston respectively, and base plate is provided with penetrating fluid pipe that leads to pressure head and the confined pressure liquid pipe that leads to annular gap in the cylinder barrel; Rising pipe is located on the piston; Be communicated with the pressure head of contact piston, said penetrating fluid pipe connects the infiltration loop, and confined pressure liquid pipe is connected with the confined pressure loop.
Further, on base plate, be provided with the groove that matees with said pressure head, pressure head is placed in the said groove.Simultaneously, on the surface of contact of surface of contact, pressure head and the piston of surface of contact, base plate and the cylinder barrel of piston and cylinder barrel and base plate, be equipped with the O RunddichtringO of rubber material.
Said axial load maintainer is made up of support, screw rod, clock gauge and the cushion block that has a thrust bearing; Be provided with the boss that is used to place permeameter in the support bottom, screw rod be positioned at boss directly over, be movably connected on the support; Be connected with cushion block in the screw rod lower end, clock gauge is connected on the cushion block.
Preferably, said cushion block adopts sphere to contact with the lower end of screw rod, and is stressed evenly to guarantee permeameter.
Described infiltration loop comprises stop valve, pressure transducer, flow sensor, the diverting valve on the penetrating fluid pipe that is connected each permeameter in order and is connected in parallel on low-pressure permeability loop and the high-pressure osmosis loop on the diverting valve; Described low-pressure permeability loop is connected and composed by ram pump, surplus valve, tensimeter and filtrator; Be used for the infiltration of high osmosis rock sample; Utilize ram pump seepage pressure (poor) to be provided to the rock sample in the permeameter; It is stable that surplus valve is used to keep-up pressure, and filtrator is used to keep the permeation liquid cleaning, and tensimeter is used to observe seepage pressure (poor).Described high-pressure osmosis loop is connected to form by wobble pump and voltage stabilizer, is used for the infiltration of low-permeability rock sample, utilizes wobble pump to the rock sample in the permeameter seepage pressure (poor) to be provided, and voltage stabilizer is used to keep seepage pressure.
Further, be respectively equipped with retaining valve, be used for low-pressure permeability loop and high-pressure osmosis loop are isolated in the junction of low-pressure permeability loop and high-pressure osmosis loop and diverting valve.
Described confined pressure loop is connected to form by second ram pump, second surplus valve and second tensimeter, and described second surplus valve is used for keeping the constant of confined pressure.
In the utility model, a plurality of permeameters shared same low-pressure permeability loop and high-pressure osmosis loop, while shared same confined pressure loop, the confined pressure loop provides pressure to a plurality of permeameters simultaneously with the infiltration loop, can test the penetration property of a plurality of rock samples simultaneously.
During test, porous disc, pressure head and rock sample are wrapped up in thermal contractible plastic cover and electrical adhesive tape envelope, with base plate, piston, cylinder barrel is coaxial is installed in the permeameter, piston moves with respect to cylinder barrel and makes rock sample bear axle pressure and distortion.Between rock sample and cylinder barrel, the annular gap is arranged, inject liquid during this time in the crack, rock sample is applied confined pressure by the confined pressure loop.The highly pressurised liquid that ram pump and/or wobble pump produce in the infiltration loop is transported to each permeameter lower end through diverting valve, and permeameter upper end and atmosphere apply the generation permeable pressure head in two ends up and down at rock sample.Axially load maintainer can be installed a plurality of permeameters, respectively permeameter is applied axial load by screw rod.
The rock permeability characteristic short-time test device of the utility model can integral installation on onboard control console, carry out the rock sample testing permeability in the place of user's appointment.
The beneficial effect of the utility model rock permeability characteristic short-time test device comprises:
1) simultaneously the polylith rock sample is carried out permeability test, reduce test period, and reduce testing expenses;
2) by ram pump or wobble pump permeation liquid is provided continuously, permeable pressure head can reach stationary value;
3) this apparatus structure is simple, easy to operate, with low cost, can vehicle-mountedly make an experiment to the appointed place;
4) axially be provided with thrust bearing in the cushion block of load maintainer, can prevent that dial indicators rack from rotating, screw rod adopts sphere to contact with cushion block, can guarantee that the permeameter piston contacts with the close of cushion block in the screw rod rotation process.
Description of drawings
Fig. 1 is the structural representation of the said rock permeability characteristic of the utility model embodiment short-time test device.
Fig. 2 is the structural representation of permeameter among Fig. 1.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the structural representation of axial load maintainer among Fig. 1.
The vertical view of Fig. 5 Fig. 4.
Among the figure: 1-permeameter, the axial load maintainer of 2-, 3-second ram pump, 4-stop valve, 5-flow sensor, 6-pressure transducer, 7-diverting valve; The 8-retaining valve, 9-voltage stabilizer, 10-tensimeter, 11-wobble pump, 12-surplus valve, 13-filtrator, 14-ram pump; 15-second surplus valve, 16-second tensimeter, 20-rising pipe, 21-piston, 22-pressure head, 23-cylinder barrel; The 24-porous disc, 25-rock sample, 26-annular gap, 27-O RunddichtringO, 28-base plate, 29-penetrating fluid pipe; 30-confined pressure liquid pipe, 31-support, 32-screw rod, 33-cushion block, 34-clock gauge, 35-boss.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further description.
The structure of rock permeability characteristic short-time test device is as shown in Figure 1, mainly is made up of permeameter 1, axial load maintainer 2, infiltration loop, confined pressure loop four major parts, and whole device is installed on the onboard control console.
The structure of permeameter 1 such as Fig. 2 are made up of cylinder barrel 23, piston 21, base plate 28, porous disc 24 and pressure head 22.Rock sample 25 two ends are stacked together with porous disc 24, pressure head 22 coaxial lines successively, with thermal contractible plastic tube, electrical adhesive tape parcel.Rock sample 25 behind the parcel is put into the groove on cylinder barrel 23 inner bottom platings 28, and piston 21 is pressed in the cylinder barrel 23, between rock sample 25 and cylinder barrel 23, forms annular gap 26.Between base plate 28, piston 21 and cylinder barrel 23, pressure head 22, seal with O RunddichtringO 27.As shown in Figure 3, on base plate 28, be provided with penetrating fluid pipe 29 and confined pressure liquid pipe 30, piston 21 is provided with rising pipe 20.
The structure of axial load maintainer 2 such as Fig. 4, Fig. 5; Be made up of support 31, screw rod 32, clock gauge 34 and the cushion block 33 that has a thrust bearing, be laid with 6 poles on the said support 31, each pole is gone up activity chain and is connected to a screw rod 32; Screw rod 32 lower end spheres are connected with cushion block 33; 33 times connection clock gauges 34 of cushion block are provided with the boss 35 that is used to place permeameter 1 on the bracket base below the pole, this axial load maintainer 2 can be placed 6 permeameters simultaneously.
The infiltration loop is connected to form by ram pump 14, wobble pump 11, surplus valve 12, retaining valve 8, diverting valve 7, pressure transducer 6, flow sensor 5, stop valve 4, voltage stabilizer 9, filtrator 13 and tensimeter 10, and ram pump 14 and wobble pump 11 are respectively applied for the infiltration of high osmosis and low-permeability rock sample.The liquid of ram pump 14 outputs provides low-pressure and big flow liquid through filtrator 13, retaining valve 8, diverting valve 7, pressure transducer 6, flow sensor 5, stop valve 4 to permeameter 1; Wobble pump 11 provides high pressure and low flow rate liquid through retaining valve 8, diverting valve 7, pressure transducer 6, flow sensor 5, stop valve 4 to permeameter 1.Between filtrator 13 and retaining valve 8, surplus valve 12 is set, avoids low excessively ram pump 14 overloads that cause of rock sample perviousness.The confined pressure loop is connected to form by second ram pump 3, second surplus valve 15 and second tensimeter 16, and second surplus valve 15 is used for keeping the constant of confined pressure.
Infiltration loop and confined pressure loop provide pressure to a plurality of permeameters simultaneously, test the penetration property of a plurality of rock samples simultaneously.
The course of work of rock permeability characteristic short-time test device is: rock sample, porous disc, pressure head with thermal contractible plastic cover and electrical adhesive tape sealing, are put into the O RunddichtringO in the groove of pressure head.After in the groove of piston, putting into the O RunddichtringO; Piston is inserted cylinder barrel; Put into cylinder barrel to packaged rock sample, the relative position of adjustment piston and cylinder barrel makes following pressure head concordant with the lower surface of cylinder barrel; And the annular gap between adjustment rock sample and the cylinder barrel, make the external diameter of rock sample coaxial with the internal diameter of cylinder barrel.After in the groove of base plate, putting into the O RunddichtringO, cylinder barrel and base plate are coupled together with bolt, nut, plain washer and spring washer.On base plate, install penetrating fluid pipe and confined pressure liquid pipe.
Permeameter is placed on the boss of support, cushion block is placed on the permeameter, and rotating screw bolt makes the lower surface of cushion block contact with the upper surface of permeameter, and the clock gauge reading is returned to zero.Cushion block is provided with thrust bearing, so only with hand is helped clock gauge gently, can protect the clock gauge thimble.
Be rotated further screw rod, when the clock gauge reading stops operating during for preset value.
A plurality of permeameters according to after as above step is installed, are connected with the infiltration loop with the confined pressure loop respectively.Open stop valve, second ram pump that starts the confined pressure loop applies confined pressure to rock sample.After second surplus valve has liquid outflow and confined pressure to keep stablizing, start the ram pump in infiltration loop, to rock sample permeable pressure head is provided.Have or not liquid to flow out in the observation permeameter,, rock sample is continued pressurization with wobble pump if there is not liquid to flow out.The infiltration loop is provided with filtrator, can guarantee that permeation liquid impurity particle diameter is very little and does not influence the perviousness of rock sample.The infiltration loop is provided with voltage stabilizer, prevents the significantly vibration of permeable pressure head.The infiltration loop is provided with diverting valve, guarantees that ram pump and wobble pump are transported to the flow approximately equal of each permeameter.The confined pressure loop all is provided with stop valve with the infiltration loop, if when once the rock sample quantity of test is less than the permeameter quantity that load maintainer can install, can close corresponding stop valve.
The signal of infiltration loop upward pressure sensor and flow sensor is connected to computing machine through A/D converter and signal amplifier; And record permeable pressure head and flow; According to permeable pressure head and the flow sample gathered; Obtain the Penetration Signature of rock sample through linear regression, comprise that permeability, non-Darcy flow
factor and acceleration factor.
Rotating screw bolt makes the clock gauge reading reach next predetermined value respectively, repeats as above step, can test out the Penetration Signature of rock sample under the various deformation states.
Claims (9)
1. rock permeability characteristic short-time test device is characterized in that by an axial load maintainer, is installed at least one permeameter on the said axial load maintainer and the infiltration loop and the confined pressure loop that are connected on the permeameter constitute;
Said permeameter is made up of cylinder barrel, piston, base plate, pressure head, porous disc and rock sample, and the cylinder barrel upper end is provided with piston, and base plate is fixedly connected on the bottom of cylinder barrel; Two ends are fixed with respectively between rock sample and the inner wall of cylinder of porous disc and pressure head and keep certain annular gap to be placed in the cylinder barrel; The internal diameter of said rock sample is coaxial with the internal diameter of cylinder barrel, and two pressure heads that are positioned at the rock sample two ends contact with the base plate face with piston respectively, and base plate is provided with penetrating fluid pipe that leads to pressure head and the confined pressure liquid pipe that leads to annular gap in the cylinder barrel; Rising pipe is located on the piston; Be communicated with the pressure head of contact piston, said penetrating fluid pipe connects the infiltration loop, and confined pressure liquid pipe is connected with the confined pressure loop;
Said axial load maintainer is made up of support, screw rod, clock gauge and the cushion block that has a thrust bearing; Be provided with the boss that is used to place permeameter in the support bottom, screw rod be positioned at boss directly over, be movably connected on the support; Be connected with cushion block in the screw rod lower end, clock gauge is connected on the cushion block.
2. rock permeability characteristic short-time test device according to claim 1; It is characterized in that described infiltration loop comprises stop valve, pressure transducer, flow sensor, the diverting valve that is connected in order on the penetrating fluid pipe and is connected in parallel on low-pressure permeability loop and the high-pressure osmosis loop on the diverting valve; Described low-pressure permeability loop is connected and composed by ram pump, surplus valve, tensimeter and filtrator, and described high-pressure osmosis loop is connected to form by wobble pump and voltage stabilizer.
3. rock permeability characteristic short-time test device according to claim 2 is characterized in that being respectively equipped with retaining valve in the junction of low-pressure permeability loop and high-pressure osmosis loop and diverting valve.
4. rock permeability characteristic short-time test device according to claim 2 is characterized in that permeameter shared same low-pressure permeability loop and high-pressure osmosis loop.
5. rock permeability characteristic short-time test device according to claim 1 is characterized in that described confined pressure loop is connected to form by second ram pump, second surplus valve and second tensimeter.
6. rock permeability characteristic short-time test device according to claim 5 is characterized in that the shared same confined pressure of permeameter loop.
7. rock permeability characteristic short-time test device according to claim 1 is characterized in that on base plate, being provided with the groove that matees with said pressure head, and pressure head is placed in the said groove.
8. rock permeability characteristic short-time test device according to claim 1 is characterized in that described cushion block contacts with screw rod lower end sphere.
9. rock permeability characteristic short-time test device according to claim 1 is characterized in that on the surface of contact of surface of contact, pressure head and the piston of surface of contact, base plate and the cylinder barrel of piston and cylinder barrel and base plate, being equipped with the O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202783385U CN202166597U (en) | 2011-08-03 | 2011-08-03 | Rapid testing device for permeability of rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202783385U CN202166597U (en) | 2011-08-03 | 2011-08-03 | Rapid testing device for permeability of rock |
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| Publication Number | Publication Date |
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| CN202166597U true CN202166597U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202783385U Expired - Fee Related CN202166597U (en) | 2011-08-03 | 2011-08-03 | Rapid testing device for permeability of rock |
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| CN (1) | CN202166597U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410976A (en) * | 2011-08-03 | 2012-04-11 | 山西潞安环保能源开发股份有限公司 | Rapid testing device of permeability of rocks |
| CZ304862B6 (en) * | 2014-03-20 | 2014-12-10 | Isatech, S.R.O. | Apparatus to measure very low permeability of rock environment |
| CN105954175A (en) * | 2016-07-18 | 2016-09-21 | 中南大学 | Device and method for testing permeability of engineering materials |
| CN107300522A (en) * | 2017-08-23 | 2017-10-27 | 温州大学 | Multi-joint flexible wall permeameter |
| CN109765161A (en) * | 2019-01-25 | 2019-05-17 | 中国矿业大学 | It is a kind of to utilize permeability test method and device that bucket offer osmotic pressure and confining pressure are provided |
| CN109813644A (en) * | 2019-03-19 | 2019-05-28 | 苏州开洛泰克科学仪器科技有限公司 | A kind of hypotonic rock mine porosity measurement system and method |
| CN113447420A (en) * | 2021-06-30 | 2021-09-28 | 西南石油大学 | Shale stress sensitivity detection device and method |
-
2011
- 2011-08-03 CN CN2011202783385U patent/CN202166597U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410976A (en) * | 2011-08-03 | 2012-04-11 | 山西潞安环保能源开发股份有限公司 | Rapid testing device of permeability of rocks |
| CZ304862B6 (en) * | 2014-03-20 | 2014-12-10 | Isatech, S.R.O. | Apparatus to measure very low permeability of rock environment |
| CN105954175A (en) * | 2016-07-18 | 2016-09-21 | 中南大学 | Device and method for testing permeability of engineering materials |
| CN105954175B (en) * | 2016-07-18 | 2018-11-27 | 中南大学 | Experimental rig and method for testing engineering material water permeability |
| CN107300522A (en) * | 2017-08-23 | 2017-10-27 | 温州大学 | Multi-joint flexible wall permeameter |
| CN107300522B (en) * | 2017-08-23 | 2020-03-20 | 温州大学 | Multi-connected flexible wall permeameter |
| CN109765161A (en) * | 2019-01-25 | 2019-05-17 | 中国矿业大学 | It is a kind of to utilize permeability test method and device that bucket offer osmotic pressure and confining pressure are provided |
| CN109813644A (en) * | 2019-03-19 | 2019-05-28 | 苏州开洛泰克科学仪器科技有限公司 | A kind of hypotonic rock mine porosity measurement system and method |
| CN109813644B (en) * | 2019-03-19 | 2021-06-22 | 苏州开洛泰克科学仪器科技有限公司 | System and method for measuring porosity of low-permeability rock ore |
| CN113447420A (en) * | 2021-06-30 | 2021-09-28 | 西南石油大学 | Shale stress sensitivity detection device and method |
| US11513051B1 (en) | 2021-06-30 | 2022-11-29 | Southwest Petroleum University | Shale stress sensitivity testing device and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20140803 |
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