CN103439210A - Pavement material dynamic water pressure washing tester - Google Patents
Pavement material dynamic water pressure washing tester Download PDFInfo
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- CN103439210A CN103439210A CN2013103882860A CN201310388286A CN103439210A CN 103439210 A CN103439210 A CN 103439210A CN 2013103882860 A CN2013103882860 A CN 2013103882860A CN 201310388286 A CN201310388286 A CN 201310388286A CN 103439210 A CN103439210 A CN 103439210A
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Abstract
The invention discloses a pavement material dynamic water pressure washing tester which comprises a closed test box and a water supply system, wherein a mounting seat is fixedly arranged in the closed test box and is used for dividing an inner cavity of the closed test box into an upper forward washing cavity and a lower reverse washing cavity; a plurality of positioning barrels are arranged on the mounting seat; at least one positioning barrel is provided with a reverse washing barrel of which the upper end is closed and the lower end is communicated with the reverse washing cavity; the residual positioning barrels are provided with test piece carriers for fixing a pavement material test piece; a dynamic water inlet/outlet connected with the water supply system is formed in the forward washing cavity. The pavement material dynamic water pressure washing tester can truly simulate an actual washing condition of a pavement material; a test result is reliable; the pavement material dynamic water pressure washing tester is suitable for various types of mixtures.
Description
Technical field
The present invention relates to a kind of ground surface material performance detection tester, especially relate to a kind of ground surface material hydrodynamic pressure scouring test machine.
Background technology
When precipitation, along road surface, the comprehensive gradient, to the both sides excretion of road, thereby forms the moisture film of one deck cross flow to the rainwater that road surfaces is assembled at road surfaces, and the thickness of moisture film and precipitation intensity, road gradient, that the factors such as roughness and pavement track degree are shown on road is relevant.In Vehicle Driving Cycle, moisture film is between tire and road surface, and moisture film is subject to the extruding of tire, and relatively static water has produced dynamic, an instantaneous flowing pressure under extruding originally, and under this pressure, water is pressed in the hole and gap on road surface; When wheel leaves road surface, can road pavement produce suction function, by the water back suction that is pressed into road surface hole and gap out.From the water that road surface is pressed into or back suction goes out all acts directly on pitch and the interface that gathers materials, very easily cause pitch with gather materials between peel off, cause the loose of compound, cause pavement structure destruction.Therefore, the formation of flowing pressure and existence are the major reasons of bringing out the bituminous pavement infringement.Domestic scholars has been carried out relevant research to flowing pressure to the infringement of bituminous pavement.
The Chinese patent literature that notification number is CN101210870A, a kind of test device for asphalt mixture resisting moving water scouring is disclosed, its principle is to move to provide water pressure by piston, the speed that water pressure is moved by piston, stroke and water are determined from piston and the leakage rate of washing away between bucket, but water pressure only can read from tensimeter, cause water pressure in test to be difficult to determine, be difficult to reading, and water has flow through and how much can't measure from test specimen; The seaming chuck of this test unit is connected with piston rod, the control of flow owing to being subject to hydraulic working oil when its characteristic is work, the speed that seaming chuck moves is slower, by the unlatching of test unit oil return valve, the deadweight of oil cylinder, move, make upstroke and produce negative pressure (now without hydraulic oil participation work), but the negative pressure produced is less, does not reach the level of actual backward erosion, be unfavorable for experiment.
The Chinese patent literature that notification number is CN101216401A, a kind of asphalt mixture hydrodynamic pressure scouring test methods and device are disclosed, its principle is that the positive/negative pressure of water surface top is provided by air compressor machine and vacuum pump, test specimen is placed in water, the proportion of the air ratio water in the test specimen internal pore little (heating after air expand faster), add water surface vacuum pump and bleed and form the impact of negative pressure, thereby the air in space is excluded by water and replaces rapidly; But the nonflowing character due to water in test specimen, the flowing pressure that causes this instrument can't simulate in reality washes away; And the air in test is can be all compressed, this exerts pressure slowly with regard to making flowing pressure in test add automotive wheel road surface in positive pressure ratio reality, and negative pressure is slower, with the flowing pressure of actual ground surface material, obvious difference is arranged, and causes the inaccuracy of experimental result.In addition, pitch peel off be gather materials under negative pressure inner air expand cause pitch with gather materials between adhesion repeatedly be stripped from and come off, be not the result that flowing pressure directly produces; When ignoring the deadweight of water, (test specimen is immersed in water, appearance is not done any processing), under air pressure, in water, pressure equates everywhere, if water can be from the inside of test specimen appearance Specimen, water also can only flow to the test specimen middle part from all surface of test specimen (above, below and side), and this and real road operating mode also have obvious difference.This device is when reality is used, and air compressor and vacuum pump are often opened, and the noise of generation is large, and the work on the spot environment is poor.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, but the ground surface material hydrodynamic pressure scouring test machine that the actual Scouring Condition of a kind of real simulation ground surface material, test findings are reliable, be applicable to various mix type is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is:
A kind of ground surface material hydrodynamic pressure scouring test machine, comprise airtight chamber and water system, be installed with mount pad in described airtight chamber, described mount pad is divided into the forward flush chamber on top and the backward erosion chamber of bottom by airtight chamber inner chamber, described mount pad is provided with a plurality of positioning tubes, at least one positioning tube is equiped with the backward erosion cylinder that upper end closed, lower end are communicated with the backward erosion chamber, all the other positioning tubes are equiped with for the fixing test specimen carrier of ground surface material test specimen, and described forward flush chamber is provided with the moving water entrance be connected with water system.
Described test specimen carrier and backward erosion cylinder all have been installed with positioning pressuring plate at the periphery of upper end, and described positioning pressuring plate is fastenedly connected by securing member and mount pad.
The lower end of described test specimen carrier is equiped with the limit body to location, described ground surface material test specimen lower end.
Described backward erosion cylinder comprises cylindrical shell and seal cover board, and described seal cover board is installed in the upper end of cylindrical shell, and described cylindrical shell lower end is communicated with the backward erosion chamber.
Described airtight chamber comprises casing, upper cover plate and lower cover, described upper cover plate is provided with suspension ring and for measuring the top pressure table of forward flowing pressure, lower end or the lower cover of described casing are provided with drainpipe, described drainpipe is provided with draining valve and for measuring the discharge pressure table of reverse flowing pressure, described lower cover is provided with mudhole, and described mudhole is equipped with the blowdown plug.
Described water system comprises high-pressure hydraulic pump and, for the buffer tank at voltage stabilizing water source is provided to airtight chamber, the input end of described buffer tank is communicated with high-pressure hydraulic pump, and the output terminal of described buffer tank is communicated with the moving water entrance of airtight chamber.
Described water system also comprises pipeline, described pipeline comprises that moving water loads pipeline and moving water offloading pipeline, the end that described moving water loads pipeline is connected with buffer tank, the other end is connected with moving water entrance, and near moving water entrance place, being provided with water supply electromagnetic valve, described moving water offloading pipeline is connected in moving water and loads between the water supply electromagnetic valve and moving water entrance of pipeline, and near moving water entrance place, being provided with the backwater solenoid valve.
The output terminal of described moving water offloading pipeline is connected with the water pump pond of high-pressure hydraulic pump, and described moving water offloading pipeline is provided with metering valve and the metering stop valve for measuring the backwater amount near an end in water pump pond.
In described forward flush chamber, be provided with for preventing that moving water that driven water entrance enters from directly washing away the snubber assembly of described ground surface material test specimen.
Described airtight chamber is provided with temperature regulating device, and described temperature regulating device comprises refrigerating plant and heat-exchange device, and described refrigerating plant is connected with airtight chamber respectively with heat-exchange device.
Compared with prior art, the invention has the advantages that:
Ground surface material hydrodynamic pressure scouring test machine of the present invention, by mount pad, the inner chamber of airtight chamber is divided into to the forward flush chamber on top and the backward erosion chamber of bottom, install upper end closed on mount pad, the backward erosion cylinder that lower end is communicated with the backward erosion chamber, and a plurality of test specimen carriers, by water system, through moving water entrance, to airtight chamber, supplied water, during work, first by the forward flush chamber, to ground surface material test specimen forward, washed away, press water flows into the backward erosion chamber through the ground surface material test specimen, backward erosion chamber hydraulic pressure increases, the compressed poultry of gas in the backward erosion cylinder can, now disconnect the pressure that water system provides, the hydraulic pressure of forward flush chamber reduces, start backward erosion ground surface material test specimen under the effect of the water in backward erosion chamber pressure gas in the backward erosion cylinder, press water flows into the forward flush chamber through the ground surface material test specimen, after this water automatic reciprocating positive inverse-washing ground surface material test specimen under inertia effect in airtight chamber, form moving water circulation souring, it is basically identical with the actual conditions that true road surface is washed that process is washed away in this ground surface material test specimen simulation, can effectively check the anti-water damage ability of ground surface material, and energy-conserving and environment-protective, energy consumption is low, noise is little.
The present invention further has been installed with positioning pressuring plate in the upper end of test specimen carrier and backward erosion cylinder, by positioning pressuring plate, the axial strong fix that adds is done in the upper end of test specimen carrier and backward erosion cylinder, can prevent that test specimen carrier and backward erosion cylinder from coming off or rocking when the impact be subject to from bottom to top, improve the stability of ground surface material test specimen in process of the test, guarantee the accuracy of test findings.The present invention can be further airtight chamber in a plurality of test specimen carriers are set, and each test specimen carrier all can arrange the limit body of road pavement material test specimen location, according to the ground surface material test specimen of different-thickness select the to adapt limit body of size, so just can be simultaneously the ground surface material test specimen of a plurality of identical or different thickness be moved to water and wash away the comparison test, consume thereby greatly reduced test, and strengthened the utility function of hydrodynamic pressure scouring test machine.Airtight chamber of the present invention further comprises casing, upper cover plate and lower cover, and upper cover plate is provided with suspension ring, is convenient to, by hanging device, upper cover plate is opened and closed to operation; Upper cover plate is provided with the top pressure table, and the drainpipe of lower cover is provided with the discharge pressure table, by top pressure table and discharge pressure table, can distinguish real time measure forward flowing pressure and reverse flowing pressure, during off-test, can discharge the water in casing by draining valve; Lower cover is provided with mudhole, mudhole is equipped with the blowdown plug, unload the down blow plug after off-test and can collect the amount of gathering materials that the ground surface material test specimen is stripped from process of the test from mudhole, by the metering to this amount of gathering materials, contribute to the performance of road pavement material test specimen to be analyzed, estimate.Water system of the present invention further comprises high-pressure hydraulic pump and the flowing pressure substantially constant of airtight chamber is provided for provide the buffer tank at voltage stabilizing water source, buffer tank to make to airtight chamber, avoided the test error caused because of the water pressure fluctuations shakiness; By selecting the high-pressure hydraulic pump of different operating efficiency, can regulate the size of water pressure and the frequency of washing away, with the test demand of the ground surface material test specimen that is applicable to various mix type.Ground surface material hydrodynamic pressure scouring test machine of the present invention is pressed the water yield batch measurement that each flush cycle is discharged moving water offloading pipeline in uninstall process, can obtain the water yield of washing away of each flush cycle, measures very convenient, accurate.The present invention can further arrange temperature regulating device, by temperature regulating device, the water temperature in airtight chamber is carried out to real-time monitoring, to simulate the souring of moving water road pavement material test specimen under different water temperature conditions.
The present invention all can be tested for hitting the on-the-spot core in real test specimen, gyratory compaction test specimen or road surface, the impact of energy simulate load, temperature, three factor road pavement materials of hydraulic pressure, it is simple in structure, easy to use, can carry out a plurality of parallel experiments, test efficiency is very high simultaneously.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the cross-sectional view of the airtight chamber of the present invention.
Marginal data:
1, airtight chamber; 11, mount pad; 111, positioning tube; 112, upper spacer; 113, lower clapboard; 114, back up pad; 12, forward flush chamber; 121, moving water entrance; 122, snubber assembly; 13, backward erosion chamber; 14, positioning pressuring plate; 141, securing member; 15, casing; 151, insulation material; 152, leg; 153, stiffening plate; 154, drainpipe; 155, draining valve; 156, discharge pressure table; 16, upper cover plate; 161, suspension ring; 162, top pressure table; 163, thru-bolt; 164, vent valve; 17, lower cover; 171, mudhole; 172, blowdown plug; 2, high-pressure hydraulic pump; 21, water pump pond; 3, temperature regulating device; 31, refrigerating plant; 32, heat-exchange device; 4, pipeline; 41, moving water loads pipeline; 411, water supply electromagnetic valve; 42, moving water offloading pipeline; 421, backwater solenoid valve; 422, metering valve; 423, metering stop valve; 5, ground surface material test specimen; 6, control system; 7, test specimen carrier; 71, limit body; 72, confined planes; 8, backward erosion cylinder; 81, cylindrical shell; 82, seal cover board; 9, buffer tank; 91, buffer tank tensimeter; 92, voltage stabilizing solenoid valve.
Embodiment
Fig. 1 and Fig. 2 show a kind of ground surface material hydrodynamic pressure scouring test machine embodiment of the present invention, this testing machine comprises airtight chamber 1, water system and control system 6, be installed with mount pad 11 in airtight chamber 1, mount pad 11 is divided into the forward flush chamber 12 on top and the backward erosion chamber 13 of bottom by the inner chamber of airtight chamber 1, forward flush chamber 12 is provided with the moving water entrance 121 be connected with water system, mount pad 11 is provided with a plurality of positioning tubes 111, forward flush chamber 12 and backward erosion chamber 13 are communicated with by positioning tube 111, wherein at least one positioning tube 111, be provided with backward erosion cylinder 8, backward erosion cylinder 8 upper end closeds, lower end is communicated with backward erosion chamber 13, remaining positioning tube 111 is equipped with test specimen carrier 7, test specimen carrier 7 is for fixing ground surface material test specimen 5.The present invention is supplied water to airtight chamber 1 through moving water entrance 121 by water system, during work, first by forward flush chamber 12, to ground surface material test specimen 5 forwards, washed away, press water flows into backward erosion chamber 13 through ground surface material test specimen 5, the hydraulic pressure in backward erosion chamber 13 is increased, the compressed poultry of gas in backward erosion cylinder 8 can, now disconnect the pressure that water system provides, the hydraulic pressure of forward flush chamber 12 reduces, the water in backward erosion chamber 13 starts backward erosion ground surface material test specimen 5 under the effect of backward erosion cylinder 8 interior pressure gass, press water flows into forward flush chamber 12 through ground surface material test specimen 5, water automatic reciprocating positive inverse-washing test specimen under inertia effect in airtight chamber 1, form moving water circulation souring, the process of washing away of these ground surface material test specimen 5 simulations is basically identical with the actual conditions that true road surface is washed, can effectively check the anti-water damage ability of ground surface material.
Water system in the present embodiment comprises high-pressure hydraulic pump 2, buffer tank 9 and pipeline 4, and high-pressure hydraulic pump 2 is arranged on a water pump pond 21.Pipeline 4 comprises that moving water loads pipeline 41 and moving water offloading pipeline 42, the end that moving water loads pipeline 41 is connected with the output terminal of buffer tank 9, the other end is connected with moving water entrance 121, moving water entrance 121 is provided with for preventing that moving water that driven water entrance 121 enters from directly washing away the snubber assembly 122 of ground surface material test specimen 5, moving water loads pipeline 41 and is provided with water supply electromagnetic valve 411 near moving water entrance 121 places, the input end of buffer tank 9 is communicated with high-pressure hydraulic pump 2, buffer tank 9 is provided with buffer tank tensimeter 91 and voltage stabilizing solenoid valve 92, buffer tank 9 loads pipeline 41 by moving water and injects the moving water of stablizing hydraulic pressure to the forward flush chamber.Because pressurization enters forward flush chamber 12 by buffer tank 9 by hydraulic pressure, when in buffer tank 9, air pressure acts on the water surface equably, by water equivalently to ground surface material test specimen 5 transmission of pressures of asphalt, ignore the gravity pressure of water and do the used time, the lip-deep pressure of each ground surface material test specimen 5 equates everywhere, and direction is perpendicular to ground surface material test specimen 5 surfaces, visible ground surface material test specimen 5 bear vertical axes to pressure, when in buffer tank 9, air pressure and tire pressure are suitable, this vertical axes to pressure and road surface physical condition meet, thereby control well and simulated moving water circulation souring.Moving water offloading pipeline 42 is connected in moving water and loads between the water supply electromagnetic valve 411 and moving water entrance 121 of pipeline 41, and near moving water entrance 121 places, being provided with backwater solenoid valve 421, the output terminal of moving water offloading pipeline 42 is connected with water pump pond 21, moving water offloading pipeline 42 is provided with metering valve 422 and metering stop valve 423 near an end in water pump pond 21, metering valve 422, for measuring the backwater amount, moves the water erosion quantity.
The operation steps that the present invention carries out hydrodynamic pressure scouring test is as follows:
(1) before the experiment, detect: each ground surface material test specimen 5 is taken respectively to weight, then carry out respectively the detection of quantitative measurement (voidage, perviousness), Mechanics Performance Testing (cleavage strength, compressive strength), high-temperature behavior and fatigue behaviour.
(2) ground surface material test specimen 5 and backward erosion cylinder 8 are installed: after epoxy resin is smeared in the side of ground surface material test specimen 5, put into test specimen carrier 7, determine the size of limit body 71 according to the thickness of ground surface material test specimen 5, until ground surface material test specimen 5 bonds stabilized seals with test specimen carrier 7 after, test specimen carrier 7 is put into to the positioning tube 111 of casing 15, fluid sealant is smeared at the position that contacts of test specimen carrier 7 and positioning tube 111, and establishes O-ring seal; Backward erosion cylinder 8 is installed, the installation method that backward erosion cylinder 8 is identical with test specimen carrier 7, guarantee its sealing, with positioning pressuring plate 14, test specimen carrier 7 and backward erosion cylinder 8 is fixed in positioning tube 111, then use upper cover plate 16 closed boxes 15, and close vent valve 164.
(3) voltage stabilizing: control system 6 and high-pressure hydraulic pump 2 are connected to power supply, need to set top pressure and the minimum pressure of buffer tank 9 according to experiment; Open high-pressure hydraulic pump 2, to the interior water filling of buffer tank 9, by observing buffer tank tensimeter 91, obtain the required pressure of test; When reaching when setting hydraulic pressure or hydraulic pressure and exceeding buffer tank 9 and can bear force value, control system 6 is controlled high-pressure hydraulic pumps 2 and is quit work; When hydraulic pressure, during lower than setup pressure value, high-pressure hydraulic pump 2 starts and, to the interior water filling of buffer tank 9, makes in buffer tank 9 and remain a constant force value, thereby the air pressure in buffer tank 9 is in steady state (SS).
(4) water filling: the control parameter that the needed moving water flushing time of test and frequency are set in control system 6; Open water supply electromagnetic valve 411, close backwater solenoid valve 421, to 12 water fillings of forward flush chamber, in ground surface material test specimen 5 spaces, residual air is extruded, water further is full of the space of ground surface material test specimen 5 from top to bottom, flow in space, then flow out and enter backward erosion chamber 13 from ground surface material test specimen 5 lower surfaces, the air in backward erosion chamber 13 is squeezed into backward erosion cylinder 8 along with the water increase and forms air bags; Close water supply electromagnetic valve 411 after airtight chamber 1 full water, standing a period of time, open the air in vent valve 164 emptying forward flush chamber 12.
(5) pressurization: open water supply electromagnetic valve 411, inject moving water by moving water entrance 121 to forward flush chamber 12 by buffer tank 9, hydraulic pressure in forward flush chamber 12 is evenly distributed in the upper surface of eight ground surface material test specimens 5, water washes away downwards from ground surface material test specimen 5 upper surfaces, along with water increases the compressed accumulation of energy of air bag in backward erosion cylinder 8.
(6) release: close water supply electromagnetic valve 411, open backwater solenoid valve 421, the instant expansion of the air bag of backward erosion cylinder 8 is pressed into water from the lower surface of ground surface material test specimen 5, produce pressure vertically upward, water flows through from down to up from the space of ground surface material test specimen 5, backward erosion ground surface material test specimen 5, formed the moving water souring of circulation, and the moving water of having simulated in actual bituminous pavement space washes away situation; During release, close draining valve 155, open metering valve 422, the water yield flowed out by moving water offloading pipeline 42 in i.e. this cycle the moving water of ground surface material test specimen 5 wash away the water yield, after this repeating step (5) and step (6), complete follow-up moving water by setting and wash away.
(7) after the test, measure: after completing moving water and wash away by setting, powered-down, unload down blow plug 172, the amount of gathering materials that metering is discharged from mudhole 171, the amount of gathering materials of coming the forward hydraulic pressure of confirmed test process to enter and oppositely being stripped from the water sucking-off, contribute to the performance of road pavement material test specimen 5 to be analyzed, estimate by the metering to this amount of gathering materials; Open draining valve 155 and vent valve 164, upper cover plate 16 is unloaded, take out the ground surface material test specimen 5 after moving water washes away after the current in casing 15 are clean, the ground surface material test specimen 5 after moving water is washed away carries out corresponding to the pilot project in step (1).
Although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention.Any those of ordinary skill in the art, in the situation that do not break away from the technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention,, all should drop in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the technology of the present invention essence.
Claims (10)
1. a ground surface material hydrodynamic pressure scouring test machine, comprise airtight chamber (1) and water system, it is characterized in that: be installed with mount pad (11) in described airtight chamber (1), described mount pad (11) is divided into the forward flush chamber (12) on top and the backward erosion chamber (13) of bottom by airtight chamber (1) inner chamber, described mount pad (11) is provided with a plurality of positioning tubes (111), at least one positioning tube (111) is equiped with upper end closed, the backward erosion cylinder (8) that lower end is communicated with backward erosion chamber (13), all the other positioning tubes (111) are equiped with for the fixing test specimen carrier (7) of ground surface material test specimen (5), described forward flush chamber (12) is provided with the moving water entrance (121) be connected with water system.
2. ground surface material hydrodynamic pressure scouring test machine according to claim 1, it is characterized in that: described test specimen carrier (7) and backward erosion cylinder (8) all periphery in upper end have been installed with positioning pressuring plate (14), and described positioning pressuring plate (14) is fastenedly connected by securing member (141) and mount pad (11).
3. ground surface material hydrodynamic pressure scouring test machine according to claim 1 is characterized in that: the lower end of described test specimen carrier (7) is equiped with the limit body (71) to location, described ground surface material test specimen (5) lower end.
4. ground surface material hydrodynamic pressure scouring test machine according to claim 1, it is characterized in that: described backward erosion cylinder (8) comprises cylindrical shell (81) and seal cover board (82), described seal cover board (82) is installed in the upper end of cylindrical shell (81), and described cylindrical shell (81) lower end is communicated with backward erosion chamber (13).
5. according to the described ground surface material hydrodynamic pressure scouring test of any one in claim 1 to 4 machine, it is characterized in that: described airtight chamber (1) comprises casing (15), upper cover plate (16) and lower cover (17), described upper cover plate (16) is provided with suspension ring (161) and for measuring the top pressure table (162) of forward flowing pressure, the lower end of described casing (15) or lower cover (17) are provided with drainpipe (154), described drainpipe (154) is provided with draining valve (155) and for measuring the discharge pressure table (156) of reverse flowing pressure, described lower cover (17) is provided with mudhole (171), described mudhole (171) is equipped with blowdown plug (172).
6. according to the described ground surface material hydrodynamic pressure scouring test of any one in claim 1 to 4 machine, it is characterized in that: described water system comprises high-pressure hydraulic pump (2) and for the buffer tank (9) at voltage stabilizing water source is provided to airtight chamber (1), the input end of described buffer tank (9) is communicated with high-pressure hydraulic pump (2), and the output terminal of described buffer tank (9) is communicated with the moving water entrance (121) of airtight chamber (1).
7. ground surface material hydrodynamic pressure scouring test machine according to claim 6, it is characterized in that: described water system also comprises pipeline (4), described pipeline (4) comprises that moving water loads pipeline (41) and moving water offloading pipeline (42), the end that described moving water loads pipeline (41) is connected with buffer tank (9), the other end is connected with moving water entrance (121), and near moving water entrance (121), locating to be provided with water supply electromagnetic valve (411), described moving water offloading pipeline (42) is connected in moving water and loads between the water supply electromagnetic valve (411) and moving water entrance (121) of pipeline (41), and near moving water entrance (121), locating to be provided with backwater solenoid valve (421).
8. ground surface material hydrodynamic pressure scouring test machine according to claim 7, it is characterized in that: the output terminal of described moving water offloading pipeline (42) is connected with the water pump pond (21) of high-pressure hydraulic pump (2), and described moving water offloading pipeline (42) is provided with metering valve (422) and the metering stop valve (423) for measuring the backwater amount near an end in water pump pond (21).
9. according to the described ground surface material hydrodynamic pressure scouring test of any one in claim 1 to 4 machine, it is characterized in that: in described forward flush chamber (12), be provided with for preventing that moving water that driven water entrance (121) enters from directly washing away the snubber assembly (122) of described ground surface material test specimen (5).
10. according to the described ground surface material hydrodynamic pressure scouring test of any one in claim 1 to 4 machine, it is characterized in that: described airtight chamber (1) is provided with temperature regulating device (3), described temperature regulating device (3) comprises refrigerating plant (31) and heat-exchange device (32), and described refrigerating plant (31) is connected with airtight chamber (1) respectively with heat-exchange device (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310388286.0A CN103439210B (en) | 2013-08-30 | Ground surface material hydrodynamic pressure scouring test machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310388286.0A CN103439210B (en) | 2013-08-30 | Ground surface material hydrodynamic pressure scouring test machine |
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| CN103439210A true CN103439210A (en) | 2013-12-11 |
| CN103439210B CN103439210B (en) | 2016-11-30 |
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| CN109946186B (en) * | 2019-04-19 | 2024-03-22 | 中国南方电网有限责任公司超高压输电公司柳州局 | Scouring testing device for graphite-based flexible grounding body |
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