CN102435542A - Full-automatic mould-pressing demoulding penetration resistant testing machine - Google Patents
Full-automatic mould-pressing demoulding penetration resistant testing machine Download PDFInfo
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- CN102435542A CN102435542A CN2011103763928A CN201110376392A CN102435542A CN 102435542 A CN102435542 A CN 102435542A CN 2011103763928 A CN2011103763928 A CN 2011103763928A CN 201110376392 A CN201110376392 A CN 201110376392A CN 102435542 A CN102435542 A CN 102435542A
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Abstract
The invention relates to a building material testing machine. The existing penetration resistant testing machine has poor automation degree, high labor power consumption and long side surface wax sealing production time of specimens, the sealing performance can not be absolutely guaranteed, and the test work efficiency and the data precision are affected, so test mould sleeves distributed around a main oil cylinder have large upper mouths and small lower mouths, the specimens are assembled and disassembled above the test mould sleeves, an oil bag fastening type sealing structure is arranged between the test mould sleeve and the specimen to replace wax sealing, each mould sleeve is respectively connected with an automatic oil pressure system and an automatic water pressure system, and the whole test process is controlled and recorded through a automatic control system. The testing machine disclosed by the invention has the beneficial effects that a large amount of labor power is saved, the test is rapid and smooth, the test data is accurate and reliable, and integrated management and data uploading can be realized.
Description
Technical field
The present invention relates to the Material Testing Machine field, especially building testing machine.
Background technology
For building materials, particularly the performance test of coagulating cement soil block is very important, and the experimental data correctness directly influences the safety and the serviceable life of buildings.The anti-permeability performance of building materials is exactly one of the performance that must test of building materials.
The impermeability test that generally uses at present need be made into the frustum shape with test block, on the conical surface, will make one deck sealant, so that the infiltration of water is carried out from top to bottom, prevents from the side to exosmosis; The sealing layer is the paraffin sealant, at first heating paraffin is extremely melted fully, and the conical surface with test block rolls a week in the paraffin that melts then; Whole waxing process surpasses 1 hour, and is very loaded down with trivial details, might occur spilehole then test block pack in the test specimen; The test specimen of impermeabilisation machine is to be osculum above cone-shaped, is big mouthful below, is adorned from bottom to top by manual work during test block dress mould; Fix with a plurality of nuts again, have the test specimen that six branches, two rows arrange on the ordinary test machine, so the test block loading and unloading is very heavy; The test figure manual record does not possess the data upload function, takes time and effort because the artificial sealing of carrying out guaranteeing each test specimen; Influence the efficient and the data accuracy of experiment work, the suspicion that there is painstakingly omission in a lot of testing laboratories or does not examine is brought major hidden danger to construction quality.
Summary of the invention
The object of the invention provides a kind of full-automatic pressing mold demoulding impermeability test machine for solving the problem of above-mentioned existence, guarantees the sealing tested to have changed heavy cargo handling process, and controls and record automatically through computing machine.
The technical scheme that realizes the foregoing invention purpose is following:
Full-automatic pressing mold demoulding impermeability test machine; Have frame, hydraulic pressure system, oil hydraulic system, master cylinder is housed, the circle-shaped die trial cover that is distributed with the multiple arrangement test specimen around the upper rack master cylinder in the centre of frame; The die trial cover is turbination; Suitable for reading big, following young, tapering equates with the test specimen tapering; Between the medial surface of each die trial cover and test specimen, have oil sac fastening-type hermetically-sealed construction, each die trial cover is connected with automatic oil hydraulic system, automatic water pressure system, automatic loading and unloading sample system and automatic control system respectively.
The platen cover plate is equipped with in piston upper end at master cylinder, and last platen cover plate covers whole die trial covers, corresponding to the position of each die trial cover upper seal is housed respectively at last platen cover plate bottom surface; In the upper seal side y-type seal ring is housed; Around the piston rod horizontal direction a plurality of test specimen push rod pallets are housed in main oil cylinder piston bar lower peripheral, on each test specimen push rod pallet, the test specimen push rod are housed, each test specimen push rod is corresponding to a die trial cover of top; When piston descends; Last platen cover plate covers and seals the die trial cover, and the test specimen push rod contacts below test specimen when piston rises, and test specimen is ejected from the die trial cover.
At each die trial cover inwall middle part surface sealed oil sac is housed, between sealed oil sac and die trial cover inwall, the oil sac lining is housed, the O RunddichtringO is housed on the oil sac lining; The nut lining ring is housed on the O RunddichtringO, is die trial cover top on the nut lining ring, and hold-down nut is housed; The test specimen of in die trial cover, packing into is a die trial cover water cavity with the hold-down nut hollow part above test specimen, is described upper seal above test specimen; Have the press water passage with last platen cover plate center; Have oil-in in the sealed oil sac side, oil-in runs through oil sac lining and die trial cover side, and inlet nozzle is housed outside the side.
The automatic water pressure system has pressure water pump, and the import of pressure water pump is connected with water inlet bucket, and water-supply-pipe is passed through in outlet, and the water delivery solenoid valve is connected with the bull water trap, each bleeder of bull water trap respectively with last platen cover plate on a press water passage be connected.
Automatic oil hydraulic system has the oil pump import and is connected with fuel tank; The oil pump outlet is through oil pipeline, and reversing solenoid valve divides the two-way oil transportation, the oil transportation mouth on a road direction main oil cylinder piston top; The oil transportation mouth of another road direction main oil cylinder piston bottom; In addition, oil pump is connected with the inlet nozzle of each die trial cover side respectively with oil pipeline through oil sac packoff switching-over locking solenoid valve, gives the oil sac fuel feeding.
Automatically oil hydraulic system has the CPU that embeds full-automatic pressing mold demoulding impermeability test software; CPU respectively be contained in oil circuit in oil pressure sensor be electrically connected with the humidity sensor that is contained in the test specimen push rod pallet; Be electrically connected, and be electrically connected with oil sac packoff switching-over locking solenoid valve, water solenoid valve respectively with terminal display and automatic stamper.
The test operation program is following:
1. above the die trial cover, put into test specimen, click begins test.Open Oil pump electrical machinery and master cylinder reversing solenoid valve, be directed downwards.
2. when the oil pressure force value is greater than setting value in the master cylinder in setting-up time, close the master cylinder reversing solenoid valve, stop downwards and open oil sac packoff switching-over locking solenoid valve.Otherwise report to the police 1.
3. when the oil pressure force value is greater than setting value in the master cylinder locking device in setting-up time, close Oil pump electrical machinery, oil sac packoff switching-over locking solenoid valve, the pump motor of fetching boiling water is opened a plurality of water solenoid valves that lead to test specimen.Otherwise report to the police 2.
4. be forced in the authorised pressure process according to the GBT50082-2009 standard, system has detected test block and has leaked, and notes the time of leaking and closes the corresponding water solenoid valve of test block that leaks.Be forced in the authorised pressure process according to the GBT50082-2009 standard, hydraulic pressure reports to the police 3 less than (0.1Mpa) in the setting-up time.
In pressure process when system detect leak more than or equal to three or add to authorised pressure after leak less than three test blocks, close whole water solenoid valves and pump motor simultaneously, open the sluicing solenoid valve.
6. open oil sac packoff switching-over locking solenoid valve,, reset when hydraulic pressure in setting-up time is higher than when equaling setting value.Otherwise report to the police 4.
7. when oil pressure pressure is less than setting value in the setting-up time inner sealing device, open the master cylinder reversing solenoid valve simultaneously, upwards and open Oil pump electrical machinery.Otherwise report to the police 5.
8. master cylinder moves upward after test is accomplished, and when touching upper limit, closes the master cylinder reversing solenoid valve simultaneously, stops to make progress and closing Oil pump electrical machinery.
9. taking-up test block.And printing test findings.
" please check whether Oil pump electrical machinery turns round, whether oil is enough in the fuel tank, and whether the master cylinder reversing solenoid valve is normal, and whether oil circuit has oil leakage phenomenon for said warning 1 displaying contents." this moment the machine operation suspension, pending good continued button continues test.
Reporting to the police, " please check whether Oil pump electrical machinery turns round, whether oil is enough in the fuel tank, and whether the tight latching solenoid valve of oil sac packoff is normal, and whether oil circuit has oil leakage phenomenon for 2 displaying contents." this moment the machine operation suspension, pending good continued button continues test.
Reporting to the police, " please check whether pump motor turns round, whether water is enough in the water tank, and whether the sluicing pressure electromagnetic valve is normal, and whether the water route has drainage for 3 displaying contents." this moment the machine operation suspension, pending good continued button continues test.
4 displaying contents of reporting to the police " please check whether water valve closes dead or damage." this moment the machine operation suspension, pending good continued button continues test.
Reporting to the police, " please check whether Oil pump electrical machinery turns round, whether oil is enough in the fuel tank, and whether the master cylinder reversing solenoid valve is normal, and whether oil circuit has oil leakage phenomenon for 5 displaying contents." this moment the machine operation suspension, pending good continued button continues test.
Above technical scheme shows the innovation that the present invention has three aspects:
1. adopt whole independent master cylinder to drive and gone up platen cover plate and the upper and lower motion of test specimen push rod.When last platen cover plate and test specimen push rod moved upward, test specimen was packed into from die trial cover top, and the test specimen bottom surface is held by the test specimen push rod; Open the master cylinder reversing solenoid valve; The action switching-over, the upper seal that goes up platen cover plate bottom when last platen cover plate moves downward with the test specimen push rod contacts with the test specimen top, compacting, and relies on the y-type seal ring of its side that sealing is overlapped in die trial; And it is oil-filled to oil sac; Oil sac is close to the test specimen side, plays seal side, in the die trial cover, injects water under high pressure through the bull water trap again and carries out impermeability test.After impermeability test finishes, close water supply electromagnetic valve, open oil sac packoff locking solenoid valve, the oil in the oil sac is discharged; Open the master cylinder reversing solenoid valve again; Last platen cover plate and test specimen push rod move upward, and open the die trial cover, and the test specimen push rod ejects test specimen from the die trial cover; Remove test block, automatic stamper is got test findings.This Machine Design has changed prior art fully with the operation of loading and unloading test specimen.
2. oil sac fastening-type encapsulating method adopts the means of oil pressure, and the effect of having accomplished the test specimen side seal has conscientiously thoroughly changed the backward state of waxing sealing.
3. full automatic software control; Make each operation steps all pass through each sensor; Robot control system(RCS) pilot oil pump motor, pump motor work that each solenoid valve and computing machine are formed; Drive the running of whole test machine, and show whole operation process and test findings through terminal display screen and automatic stamper.
The present invention has following beneficial effect:
1. because a large amount of labours have been practiced thrift in full automatic working, loading, unloading test specimen is overlapped in each die trial originally; Undertaken by manpower, each die trial is with 8 clamp nuts and fixes, as has just 48 nuts of need loading and unloading of six die trials covers; And the necessary degree of tightness of all nuts is consistent, just can avoid leaking, and wants 3-5 people could accomplish the test of 6-12 groups originally at least; The present invention raises the efficiency 500% as long as 1 people just can accomplish 10 groups of tests.
2. adopted the oil sac encapsulating method, thoroughly solved leakage problem, experiment work can fast be carried out smoothly, test figure is more accurately reliable.
3. adopted the full-automatic full-time monitoring of PLC, changed manual supervisory backward state,, monitored many testing machines, realized integrated management and data upload with an exchange.
Description of drawings
Fig. 1 is the full-automatic pressing mold demoulding of a present invention impermeability test machine host structural representation;
Fig. 2 is a main frame plan structure synoptic diagram;
Fig. 3 is secondary machine structural representation;
Fig. 4 is the oil sac schematic diagram of sealing device;
Fig. 5 is the upper seal structural representation;
Fig. 6 is the full automatic working process flow diagram.
Each label title is following among the figure:
1-frame 1-1-master cylinder 2-last platen cover plate 2-1-upper seal 2-2-y-type seal ring
2-3-water under high pressure passage 3-die trial cover 3-1-test specimen 4-test specimen carriage 5-test specimen push rod pallet
5-1-test specimen push rod 6-water-purifying tank 7-Oil pump electrical machinery 7-1-oil pump 7-2-master cylinder
8-pump motor, 9-fuel tank, 10-water pump, 11-reserve tank 11-1-sluicing jar
11-2-tapping pipe 12-oil sac lining 13-oil sac 14-O RunddichtringO 15-nut lining ring
16-hold-down nut, 17-inlet nozzle, 18-oil duct.
Embodiment
Existing with the following example and combine accompanying drawing that technical scheme of the present invention is further specified.
Full-automatic pressing mold demoulding impermeability test machine is divided into main frame and secondary machine two parts; Mainframe is cylindrical; On the top of main frame the platen cover plate is housed, central part is equipped with master cylinder 7-2 in main body, is evenly distributed with six die trial covers 3 around the master cylinder circumferential; Below each die trial cover test specimen push rod 5-1 is housed; The test specimen push rod connects the test specimen push rod pallet 5 accept drain water, and last platen cover plate assembly and test specimen push rod component are driven by main oil cylinder piston, rises, down maneuver and hydraulic locking.Independently sealed oil sac 13 is equipped with in each die trial cover inside, and oil sac is communicated with master cylinder through oil duct 18, inlet nozzle 17.
At last platen cover plate top six water traps are housed; Having the water under high pressure passage at the position that last platen cover plate overlaps corresponding to each die trial is connected with six water trap water delivering orifices; Through sluicing solenoid valve tapping pipe 11-2, a jar 11-1 is connected with sluicing below test specimen push rod pallet.
Water-purifying tank 6 is housed above secondary machine, water pump 10 is housed in secondary machine inside, pump motor 8, reserve tank 11, water-purifying tank is connected with the water pump import, and exit of pump is connected with six water traps through water solenoid valve, water-supply-pipe.In secondary machine inside Oil pump electrical machinery 7 is housed also; Oil pump 7-1; Fuel tank 9; Oil pump 7-1 produces the oil pressure of 0.1-40MPa, and the oil pump outlet is connected with master cylinder 7-2 through petroleum pipeline, oil circuit reversing solenoid valve, also is connected with the inlet nozzle 17 of oil sac packoff through oil sac packoff switching-over locking solenoid valve.
Automatic control system has the CPU of embedded full-automatic pressing mold demoulding impermeability test software; CPU respectively be contained in oil circuit in oil pressure sensor be electrically connected with the humidity sensor that is contained in the test specimen push rod pallet; Be electrically connected with oil sac packoff switching-over locking solenoid valve, water solenoid valve respectively, also be electrically connected with terminal display and automatic stamper.
The workflow of present embodiment is following:
1 master cylinder tube 1-1 provides power to move up and down by oil pump 7-1
After 3 top seals are accomplished, lock solenoid valve by the switching-over of master cylinder and carry out hydraulic locking;
4 oil pump 7-1 give oil sac parts pressurization carrying out side seal via oil sac packoff switching-over locking solenoid valve;
After 5 sealings were accomplished, water passed through water pump 10 again via water-purifying tank 6, fetched water (the hydraulic pressure height is to 2MPa) to the die trial cover through 6 water traps, and the effect of water butt 11 is the smoothnesses that guarantee to add hydraulic pressure;
6 if any leaking, and water will flow to the stainless steel reception basin of the test specimen push rod pallet 5 of 6 correspondences, and catchmenting when highly touching water level switch, certain corresponding test specimen leaks in the reporting chain;
After 7 experiments finish, master cylinder 1-1 will move upward, and the push rod of test block simultaneously 5-1 holds up test block so that take out;
8 unnecessary ponding are removed long-pending full water discharging by jar spring synchro switch of 11-1 bottom that sluices automatic stamper record test figure.
Claims (7)
1. full-automatic pressing mold demoulding impermeability test machine; Have frame, hydraulic pressure system, oil hydraulic system, it is characterized by in the centre of frame master cylinder is housed, the circle-shaped die trial cover that is distributed with the multiple arrangement test specimen around the upper rack master cylinder; The die trial cover is turbination; Suitable for reading big, following young, tapering equates with the test specimen tapering; Between the medial surface of each die trial cover and test specimen, have oil sac fastening-type hermetically-sealed construction, each die trial cover is connected with automatic oil hydraulic system, automatic water pressure system, automatic loading and unloading sample system and automatic control system respectively.
2. full-automatic pressing mold demoulding impermeability test machine according to claim 1; It is characterized by in the piston upper end of master cylinder the platen cover plate is housed, last platen cover plate covers whole die trial covers, corresponding to the position of each die trial cover upper seal is housed respectively at last platen cover plate bottom surface; In the upper seal side y-type seal ring is housed; Around the piston rod horizontal direction a plurality of test specimen push rod pallets are housed in main oil cylinder piston bar lower peripheral, on each test specimen push rod pallet, the test specimen push rod are housed, each test specimen push rod is corresponding to a die trial cover of top; When piston descends; Last platen cover plate covers and seals the die trial cover, and the test specimen push rod contacts below test specimen when piston rises, and test specimen is ejected from the die trial cover.
3. full-automatic pressing mold demoulding impermeability test machine according to claim 1 is characterized by at each die trial cover inwall middle part surface sealed oil sac is housed, and between sealed oil sac and die trial cover inwall, the oil sac lining is housed; The O RunddichtringO being housed on the oil sac lining, the nut lining ring is housed on the O RunddichtringO, is die trial cover top on the nut lining ring; Hold-down nut is housed; The test specimen of in die trial cover, packing into is a die trial cover water cavity with the hold-down nut hollow part above test specimen, is described upper seal above test specimen; Have the press water passage with last platen cover plate center; Have oil-in in the sealed oil sac side, oil-in runs through oil sac lining and die trial cover side, and inlet nozzle is housed outside the side.
4. full-automatic pressing mold demoulding impermeability test machine according to claim 1; It is characterized by the automatic water pressure system and have pressure water pump; The import of pressure water pump is connected with the water inlet bucket; Outlet is through water-supply-pipe, and the water delivery solenoid valve is connected with the bull water trap, each bleeder of bull water trap respectively with last platen cover plate on a press water passage be connected.
5. full-automatic pressing mold demoulding impermeability test machine according to claim 1; It is characterized by automatic oil hydraulic system has the oil pump import and is connected with fuel tank; Oil pump outlet passing through oil pipeline; Reversing solenoid valve divides the two-way oil transportation, the oil transportation mouth that a road direction main oil cylinder piston is up, the oil transportation mouth that another road direction main oil cylinder piston is descending; In addition, oil pump is connected with the inlet nozzle of each die trial cover side respectively with oil pipeline through oil sac packoff switching-over locking solenoid valve, gives the oil sac fuel feeding.
6. full-automatic pressing mold demoulding impermeability test machine according to claim 1; It is characterized by automatic oil hydraulic system and have the CPU that embeds full-automatic pressing mold demoulding impermeability test software; CPU respectively be contained in oil circuit in oil pressure sensor be electrically connected with the humidity sensor that is contained in the test specimen push rod pallet; Be electrically connected, and be electrically connected with oil sac packoff switching-over locking solenoid valve, water solenoid valve respectively with terminal display and automatic stamper.
7. according to any one described full-automatic pressing mold demoulding impermeability test machine among the claim 1-6, it is following to it is characterized by the test operation program:
(1) above the die trial cover, put into test specimen, click begins test; Open Oil pump electrical machinery and master cylinder reversing solenoid valve, be directed downwards;
(2) when the oil pressure force value is greater than setting value in the master cylinder in setting-up time, close the master cylinder reversing solenoid valve, stop downwards and open oil sac packoff switching-over locking solenoid valve; Otherwise report to the police 1;
(3) when the oil pressure force value is greater than setting value in the master cylinder locking device in setting-up time, close Oil pump electrical machinery, oil sac packoff switching-over locking solenoid valve, the pump motor of fetching boiling water is opened a plurality of water solenoid valves that lead to test specimen, otherwise is reported to the police 2;
(4) be forced in the authorised pressure process according to the GBT50082-2009 standard, system has detected test block and has leaked, and notes the time of leaking and closes the corresponding water solenoid valve of test block that leaks; Be forced in the authorised pressure process according to the GBT50082-2009 standard, hydraulic pressure reports to the police 3 less than (0.1Mpa) in the setting-up time;
(5) in adding the hydraulic pressure process when system detect leak more than or equal to three test blocks or add to authorised pressure after leak less than three test blocks, close whole water solenoid valves and pump motor simultaneously;
(6) open oil sac packoff switching-over locking solenoid valve,, reset when hydraulic pressure in setting-up time is higher than when equaling setting value; Otherwise report to the police 4;
(7) when oil pressure pressure is less than setting value in the setting-up time inner sealing device, opens master cylinder simultaneously and begin reversing solenoid valve upwards and open Oil pump electrical machinery; Otherwise report to the police 5;
(8) master cylinder moves upward after test is accomplished, and when touching upper limit, closes the master cylinder reversing solenoid valve simultaneously, stops to make progress and closing Oil pump electrical machinery;
(9) take out test block, and print test findings.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103763928A CN102435542A (en) | 2011-11-23 | 2011-11-23 | Full-automatic mould-pressing demoulding penetration resistant testing machine |
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| CN2011103763928A CN102435542A (en) | 2011-11-23 | 2011-11-23 | Full-automatic mould-pressing demoulding penetration resistant testing machine |
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| CN102435542A true CN102435542A (en) | 2012-05-02 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076266A (en) * | 2012-11-27 | 2013-05-01 | 宁夏新三思检测设备有限公司 | Automatic concrete penetration detection apparatus |
| CN104897548A (en) * | 2015-06-16 | 2015-09-09 | 宁夏新三思检测设备有限公司 | Locking device and full-automatic concrete impermeability instrument adopting same |
| CN107192650A (en) * | 2017-04-14 | 2017-09-22 | 广西交通科学研究院有限公司 | Seal with wax the method for taking undisturbed soil permeability test soil sample |
| CN108007842A (en) * | 2017-12-11 | 2018-05-08 | 南京工程学院 | A kind of tire seals concrete impermeability test device |
| CN108918232A (en) * | 2018-09-20 | 2018-11-30 | 中国人民解放军军事科学院国防工程研究院 | A kind of movable type large special anti-leakage detector for water |
| CN110346263A (en) * | 2019-08-09 | 2019-10-18 | 王曦 | A kind of novel multi-layer impervious testing machine |
| CN114324111A (en) * | 2021-12-28 | 2022-04-12 | 山东省煤田地质局第四勘探队 | Testing device and testing method for mineral resource permeability detection |
| CN117890283A (en) * | 2024-03-15 | 2024-04-16 | 四川蜀工公路工程试验检测有限公司 | Concrete impermeability appearance |
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| JP2002357591A (en) * | 2001-06-01 | 2002-12-13 | Ishikawajima Constr Materials Co Ltd | Method and device for performing salt permeation test on concrete |
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| CN201140460Y (en) * | 2007-12-26 | 2008-10-29 | 郭和惠 | Automatic ejection mechanism for cold pressing diamond circular saw slice |
| CN101832905A (en) * | 2010-04-28 | 2010-09-15 | 北京首钢建设集团有限公司 | Key sealing method in test for testing grade of concrete impermeability |
| CN102042946A (en) * | 2009-10-09 | 2011-05-04 | 威海建设集团股份有限公司 | Test die for concrete impermeability test |
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| JP2002357591A (en) * | 2001-06-01 | 2002-12-13 | Ishikawajima Constr Materials Co Ltd | Method and device for performing salt permeation test on concrete |
| CN201107312Y (en) * | 2007-07-20 | 2008-08-27 | 王志云 | Impervious test machine |
| CN201140460Y (en) * | 2007-12-26 | 2008-10-29 | 郭和惠 | Automatic ejection mechanism for cold pressing diamond circular saw slice |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076266A (en) * | 2012-11-27 | 2013-05-01 | 宁夏新三思检测设备有限公司 | Automatic concrete penetration detection apparatus |
| CN103076266B (en) * | 2012-11-27 | 2015-03-25 | 宁夏新三思检测设备有限公司 | Automatic concrete penetration detection apparatus |
| CN104897548A (en) * | 2015-06-16 | 2015-09-09 | 宁夏新三思检测设备有限公司 | Locking device and full-automatic concrete impermeability instrument adopting same |
| CN104897548B (en) * | 2015-06-16 | 2018-02-27 | 崔晓庆 | Locking device and the full-automatic concrete Anti-leakage instrument using locking device |
| CN107192650A (en) * | 2017-04-14 | 2017-09-22 | 广西交通科学研究院有限公司 | Seal with wax the method for taking undisturbed soil permeability test soil sample |
| CN108007842A (en) * | 2017-12-11 | 2018-05-08 | 南京工程学院 | A kind of tire seals concrete impermeability test device |
| CN108918232A (en) * | 2018-09-20 | 2018-11-30 | 中国人民解放军军事科学院国防工程研究院 | A kind of movable type large special anti-leakage detector for water |
| CN108918232B (en) * | 2018-09-20 | 2023-09-26 | 中国人民解放军军事科学院国防工程研究院 | Portable large-scale special type impervious test device |
| CN110346263A (en) * | 2019-08-09 | 2019-10-18 | 王曦 | A kind of novel multi-layer impervious testing machine |
| CN114324111A (en) * | 2021-12-28 | 2022-04-12 | 山东省煤田地质局第四勘探队 | Testing device and testing method for mineral resource permeability detection |
| CN117890283A (en) * | 2024-03-15 | 2024-04-16 | 四川蜀工公路工程试验检测有限公司 | Concrete impermeability appearance |
| CN117890283B (en) * | 2024-03-15 | 2024-07-09 | 四川蜀工公路工程试验检测有限公司 | Concrete impermeability appearance |
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Application publication date: 20120502 |