CN107515182A - Portable emulation permeability performance analyzer and its application method - Google Patents
Portable emulation permeability performance analyzer and its application method Download PDFInfo
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- CN107515182A CN107515182A CN201710703099.5A CN201710703099A CN107515182A CN 107515182 A CN107515182 A CN 107515182A CN 201710703099 A CN201710703099 A CN 201710703099A CN 107515182 A CN107515182 A CN 107515182A
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- 230000035699 permeability Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims description 17
- 238000007789 sealing Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000009423 ventilation Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 24
- 230000008595 infiltration Effects 0.000 claims description 18
- 238000001764 infiltration Methods 0.000 claims description 18
- 230000007423 decrease Effects 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 235000014121 butter Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
The invention discloses a kind of portable emulation permeability performance analyzer, including：Base, sealing is realized for being contacted with road surface to be measured；Measuring cylinder, the top of the base is arranged on, is connected between base by permeability cell, and ventilation switch is provided with permeability cell；Air pressure sliding block, is arranged on inside the measuring cylinder and vertical with the side wall of the measuring cylinder, is mobile sealing between the air pressure sliding block and the side wall of the measuring cylinder；Pneumatic controller, the top of the measuring cylinder is arranged on, for controlling the air pressure sliding block upper air inlet in the measuring cylinder；Range finder module, for measuring displacement and used time of the air pressure sliding block in the measuring cylinder；The measuring cylinder is sealing drum, and upper inlet port is connected by the Pneumatic controller and external connection, bottom gas outlet by the permeability cell with extraneous air.Traditional water substituted as test seepage flow carrier using air, the permeability performance that can carry out large porosity open gradation road surface accurately measures.
Description
Technical field
The present invention relates to road engineering detection field, and in particular to a kind of permeability performance analyzer and its application method.
Background technology
It is also further strict for the quality requirement of bituminous paving with the horizontal continuous improvement of China's road construction, pitch
Compactness of pavement control is to ensure the important means of bituminous paving quality, in daily road construction《Asphalt highway construction skill
Art specification JTG F40-2004》Generally use pavement seepage instrument by pavement seepage amount in the analytical unit time knows road
Face pressure reality situation.
And traditional water creep appearance can run into residual air in the cavity of sealed bottom ring and influence to measure knot in use
Fruit, when permeameter carries out actual measurement, current can preferentially be full of this portion void, then penetrate into asphalt surface course again.In order to
The problem of gas residue causes error of measured data big is eliminated, modified water creep appearance is more to be provided with exhaust outlet or exhaust in its bottom
Valve, water creep appearance measurement is carried out after exhaust outlet has current spilling, is had water to overflow with exhaust outlet and is shown that the air of bottom has been drained.
Aforesaid way has good effect for the pavement detection of voidage smaller (voidage is below 6%), and right
Reach more than 18% open gradation road surface in voidage, because current are one in the cavity infitration process by permeameter bottom
Divide and come into road surface, will not preferentially be full of cavity, therefore exhaust outlet has water spilling can not show that current penetrate into drip well
Between at the beginning of blue or green road surface, the measure for big space infiltration coefficient is always a difficult point, is mainly manifested in following side
Face：1st, permeable instrument lower air influences test result；2nd, current start to penetrate into the road surface time and are difficult to determine in water creep appearance；3、
Big space road surface air entrapment influences infiltration coefficient measure.
The defects of existing in view of above-mentioned existing water creep appearance, the present inventor are carrying out state key research and development planning item
(2016YFE0108200)；The research process of Jiangsu Province's communications and transportation science and technology and achievements conversion project (2016Y03) two projects
And such product design manufacture abundant for many years practical experience and professional knowledge are engaged in, actively it is subject to research and innovation, to create
If a kind of portable emulation permeability performance analyzer and its application method, make it have more practicality.By constantly studying, setting
Meter, and after studying sample repeatedly and improving, the present invention having practical value is created finally.
The content of the invention
It is a primary object of the present invention to, the defects of overcoming existing water creep appearance to exist, and a kind of portable emulation is provided
Permeability performance analyzer and its application method, measurement accuracy is high, and can be used in the infiltration on the higher open gradation road surface of voidage
Performance detection, thus more suitable for practicality, and with the value in industry.
The object of the invention to solve the technical problems is realized using following technical scheme.
A kind of portable emulation permeability performance analyzer, including：
Base, sealing is realized for being contacted with road surface to be measured；
Measuring cylinder, the top of the base is arranged on, is connected between the base by permeability cell, and the permeability cell
On be provided with ventilation switch；
Air pressure sliding block, be arranged on it is inside the measuring cylinder and vertical with the side wall of the measuring cylinder, the air pressure sliding block with
It is mobile sealing between the side wall of the measuring cylinder；
Pneumatic controller, the top of the measuring cylinder is arranged on, for controlling the air pressure in the measuring cylinder to slide
Block upper air inlet；
Range finder module, for measuring displacement and used time of the air pressure sliding block in the measuring cylinder；
The measuring cylinder is sealing drum, and upper inlet port passes through the Pneumatic controller and external connection, bottom outlet
Mouth is connected by the permeability cell with extraneous air.
Further, the base includes a die cavity for being located at the base bottom, and the die cavity top is breathed freely with described
Pipe connects, and the base edge is provided with sealing ring.The sealing ring uses soft rubber, and sealed width is 3cm ± 0.5cm.
Further, the bottom of the measuring cylinder is provided with disc fixing device, for supporting the measuring cylinder.The circle
Tray fixing device includes the support bar of the disk for being arranged on the measuring cylinder bottom and the support disk, and the support bar is extremely
It is three less.
Further, the measuring cylinder and the diameter difference of the air pressure sliding block are not more than 0.15mm, and the air pressure sliding block
Contact face between the measuring cylinder is provided with airtight and watertight padding seam, and the filler, which is that the viscosity such as butter, putty are larger, to be glued
Property material.
Further, the air pressure sliding block is made of metal material, and the thickness of the air pressure sliding block is the measurement
The 1/5-1/3 of cylinder height.And the top of the air pressure sliding block is coated with reflectance coating.
Further, the Pneumatic controller includes：
Electromagnetic relay, the metal suction end set with the air pressure sliding block top is connected, for fixing and discharging the gas
Press sliding block；
Pressure control mouth, it is connected with the upper inlet port of the measuring cylinder；
Pressure control knob, for adjusting the opening and closing and its folding size of the pressure control mouth.
Further, the range finder module is the laser ranging system for being arranged on the measuring cylinder top.Or pass through institute
State the measurement that the dial markings in measuring cylinder side wall carry out the air pressure slider displacement.
Further, the ventilation switch includes electronics air valve and electronics air valve knob, and the electronics air valve knob is used for
Adjust the opening and closing and its folding size of the electronics air valve.
Also include hand-held handle, be arranged on the top of the measuring cylinder.
Further, in addition to air pressure measuring apparatus, for detecting the air pressure inside the measuring cylinder.
The application method of portable emulation permeability performance analyzer, the portable emulation permeability performance analyzer is used for
The infiltration coefficient on road surface is detected, is comprised the following steps：
S1, air-leakage test：Open the air inlet, close the gas outlet, the air pressure sliding block is still in the survey
Do not decline in graduated cylinder, then top air-tightness is good；Close the air inlet, open the gas outlet, the air pressure sliding block is still in
Do not decline in the measuring cylinder, then bottom air-tightness is good；
S2, measurement：The air pressure sliding block is moved at the top of the measuring cylinder, and open the air inlet, close described in
Gas outlet, the base is positioned on road surface to be measured, discharges the air pressure sliding block, it is described after the air pressure sliding block is static
Range finder module records displacement L1, then opens gas outlet, close to during the measuring cylinder bottom or the air pressure sliding block is static
Afterwards, the range finder module record displacement L2, and time T1 used；
S3, calculating：Infiltration coefficient K1=A*B* (L2-L1) * S/T1, wherein, A is conversion coefficient, and B is water density, and S is institute
State the cross-sectional area of measuring cylinder.
The application method of portable emulation permeability performance analyzer, the portable emulation permeability performance analyzer is used for
The infiltration coefficient on road surface is detected, is comprised the following steps：
S1, air-leakage test：Open the air inlet, close the gas outlet, the air pressure sliding block is still in the survey
Do not decline in graduated cylinder, then top air-tightness is good；Close the air inlet, open the gas outlet, the air pressure sliding block is still in
Do not decline in the measuring cylinder, then bottom air-tightness is good；
S2, test prepare：The Pneumatic controller is adjusted to control the air pressure sliding block top in the measuring cylinder
Air inlet, so that the air pressure sliding block is declined with the speed no more than 0.4cm/s；
S3, measurement：The air pressure sliding block is moved at the top of the measuring cylinder, and opens the air inlet and the outlet
Mouthful, the base is positioned on road surface to be measured, discharges the air pressure sliding block, after the air pressure sliding block is stable, the ranging
Module records displacement l1, and measures the now air pressure p1 in the measuring cylinder by air pressure measuring apparatus, treats the air pressure sliding block
During close to the measuring cylinder bottom, the range finder module records displacement l2, and by air pressure measuring apparatus measurement now
Air pressure p2 in the measuring cylinder, and time t2 used；
S4, calculating：Coefficient of permeability K 2=A*B2* g*h* (l2-l1) * S/ (S1*p*t2), wherein, A is conversion coefficient, and B is
Water density, S are the cross-sectional area of the measuring cylinder, and S1 is the contact area on the base and the road surface to be measured, p=(p1+
P2)/2, g is acceleration of gravity, and h is the pervious bed thickness in road surface to be measured.
Using above-mentioned technical proposal, following technique effect can be obtained：
1), being used as using air instead of water for the invention tests seepage flow carrier, by the open gradation road surface sky of itself
The air of gap and permeameter bottom cavity residual regards " water " full of test seepage flow as, and it is hollow effectively to solve traditional water creep appearance
Influence of the air to infiltration coefficient in gas and road surface, true current water creep appearance is further simulated as seepage flow carrier using gas
Test process, so as to reaching easy to operate, being easy to carry, measuring accurately effect；
2), by the release of electrical measurement Control air pressure sliding block, the error for avoiding manual control time from measuring so that examination
It is more accurate to test data；
3), the air inlet of measuring cylinder, can by the control pressure control mouth folding of pressure control knob and its folding size
The inlet of measuring cylinder upper air is precisely controlled, so as to the decrease speed of effective control pressure sliding block；
4) dial markings, set in measuring cylinder can occur damaging in range finder module or during failure it is standby, avoid the occurrence of
Due to the problem of can not being measured caused by range finder module；
5) it is, mobile sealing between measuring cylinder and air pressure sliding block, specifically, measuring cylinder and the diameter difference of air pressure sliding block are little
In 0.15mm, and the contact face between air pressure sliding block and measuring cylinder is provided with airtight and watertight padding seam, so as to realize that air pressure is slided
Block can not only plugging meter cylinder, and can be in measuring cylinder internal slide so that measurement data is more accurate.
Brief description of the drawings
Fig. 1 is the stereogram of the portable emulation permeability performance analyzer of the present invention；
Fig. 2 is Fig. 1 front view；
Fig. 3 is Fig. 1 top view；
Fig. 4 is Fig. 1 sectional view；
Fig. 5 is Fig. 1 upward view；
Fig. 6 is Fig. 1 partial enlarged drawing；
Fig. 7 is the structural representation of air pressure sliding block in Fig. 1；
Wherein：1- laser ranging systems；2- electromagnetic relays；3- pressure control knobs；4- pressure control mouths；5- graduated scales
Line；6- disc fixing devices；7- electronics air valves；8- permeability cells；9- sealing rings；10- bases, 10-1- die cavities；11- electronics air valves
Knob；12- air pressure measuring apparatus；13- measuring cylinders, 13-1- air inlets, 13-2- gas outlets；14- air pressure sliding blocks, 14-1- metals
Suction nozzle, 14-2- reflectance coatings, 14-3- contact faces, 14-4- airtight and watertight paddings seam；15- holds handle.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, to according to this
The portable emulation permeability performance analyzer proposed and its application method its embodiment, feature and its effect are invented, in detail
Describe in detail bright as after.
As shown in figs. 1-7, the invention discloses a kind of portable emulation permeability performance analyzer, including：Base 10, is used for
Realization sealing is contacted with road surface to be measured；Measuring cylinder 13, the top of base 10 is arranged on, is connected between base 10 by permeability cell 8
Connect, and ventilation switch is provided with permeability cell 8, the closure of permeability cell 8 is realized by ventilation switch；Air pressure sliding block 14, is arranged on
It is inside measuring cylinder 13 and vertical with the side wall of measuring cylinder 13, it is mobile sealing between the side wall of air pressure sliding block 14 and measuring cylinder 13；
Pneumatic controller, the top of measuring cylinder 13 is arranged on, for controlling the upper air of air pressure sliding block 14 in measuring cylinder 13 to enter
Amount；Range finder module, for measuring displacement and used time of the air pressure sliding block 14 in measuring cylinder 13；Measuring cylinder 13 is sealing drum, top
Air inlet 13-1 is connected by Pneumatic controller and external connection, bottom gas outlet 13-2 by permeability cell 8 with extraneous air.
Specifically, base 10 includes a die cavity 10-1 for being located at the bottom of base 10, die cavity 10-1 is bowl-type, die cavity 10-1
Top is connected with permeability cell 8 so that measuring cylinder 13 passes through the air contact in permeability cell 8 and die cavity 10-1.In order to increase base
10 with the sealing on road surface to be measured, therefore the edge of base 10 is provided with sealing ring 9, it is preferred that sealing ring 9 uses soft rubber, close
Envelope width is 3cm ± 0.5cm.
In order to ensure the stability of measuring cylinder 13, the bottom of measuring cylinder 13 is provided with disc fixing device 6, for supporting
Measuring cylinder 13.Disc fixing device 6 includes the disk for being arranged on the bottom of measuring cylinder 13 and the support bar for supporting disk, support bar
At least three.
In order to realize the mobile sealing of air pressure sliding block 14 and measuring cylinder 13, it is specifically：Measuring cylinder 13 and air pressure sliding block 14
Diameter difference be not more than 0.15mm, and the contact face 14-3 between air pressure sliding block 14 and measuring cylinder 13 is provided with airtight and watertight padding seam
14-4, preferable filler are the larger stickum of viscosity such as butter, putty, by the stickum that sets between the two so as to
Realize sealing between the two.
Ignore its friction between measuring cylinder 13 to realize air pressure sliding block 14 to be moved down under its own gravity
Power, therefore air pressure sliding block 14 is made of metal material, and the thickness of air pressure sliding block 14 is the 1/5-1/3 of the height of measuring cylinder 13.
And the top of air pressure sliding block 14 is coated with reflectance coating 14-2, range finder module fast, easily can be coated anti-by top
The laser of coating 14-2 reflections is penetrated, so as to realize the accurate measurement of distance.
Further, Pneumatic controller includes：Electromagnetic relay 2, it inhales with the metal that the top of air pressure sliding block 14 is set
Head 14-1 connections, for fixing and discharging air pressure sliding block 14；Pressure control mouth 4, connect with the upper inlet port 13-1 of measuring cylinder 13
Connect；Pressure control knob 3, for adjusting the opening and closing and its folding size of pressure control mouth 4.
Range finder module is the laser ranging system 1 for being arranged on the top of measuring cylinder 13, or by the side wall of measuring cylinder 13
Dial markings 5 carry out the measurement of the displacement of air pressure sliding block 14.When the failure of laser ranging system 1 or damage, in measuring cylinder 13
Dial markings 5 can help user to carry out manual measurement, avoid the occurrence of due to caused by the failure of laser ranging system 1 or damage
Situation about can not use.
Ventilation switch includes electronics air valve 7 and electronics air valve knob 11, and electronics air valve knob 11 is used to adjust electronics air valve 7
Opening and closing and its folding size.
In addition, in order to increase the convenience that instrument uses, in addition to hand-held handle 15, the top of measuring cylinder 13 is arranged on,
Convenient use person carries.
In order to measure the air pressure inside measuring cylinder 13, in addition to air pressure measuring apparatus 12, for detecting inside measuring cylinder 13
Air pressure.
In addition the invention also discloses the application method of portable emulation permeability performance analyzer, portable emulation is seeped water
Fabricmeter is used for the infiltration coefficient for detecting road surface, comprises the following steps：
S1, air-leakage test：Open air inlet 13-1, close gas outlet 13-2, air pressure sliding block 14 is still in measuring cylinder 13
Do not decline inside, then top air-tightness is good；Close air inlet 13-1, open gas outlet 13-2, air pressure sliding block 14 is still in measuring cylinder
Do not decline in 13, then bottom air-tightness is good, specifically, air pressure sliding block 14 to be moved to top and its gold of measuring cylinder 13 first
Category suction nozzle 14-1 is in contact with the electromagnetic relay 2 of Pneumatic controller, so that air pressure sliding block 14 is static to rest on measurement
The top of cylinder 13, then open the pressure control mouth 4 of Pneumatic controller, close permeability cell 8, air is entered from measurement pipe top
Gas port 13-1 enters, and release air pressure sliding block 14, does not decline if being still in measuring cylinder 13, top air-tightness is good；Close air pressure
Control device closes the upper inlet port 13-1 of measuring cylinder 13, opens permeability cell 8, air is entered from measurement pipe bottom, release
Air pressure sliding block 14, do not decline if being still in measuring cylinder 13, bottom air-tightness is good；
S2, measurement：After air-tightness is detected by S1, show as the good instrument of air-tightness and be used to measure, specifically, by gas
Pressure sliding block 14 is moved to the top of measuring cylinder 13, and opens the air inlet 13-1 of measuring cylinder 13, closes the gas outlet 13- of measuring cylinder 13
2, base 10 is positioned on road surface to be measured, sealing ring 9 fully contacts with road surface, discharges air pressure sliding block by electromagnetic relay 2
14, after air pressure sliding block 14 is static, range finder module records displacement L1, and then rapid rotating electron air valve knob 11 opens gas outlet
13-2, close to during 13 bottom of measuring cylinder or air pressure sliding block 14 it is static after, rapid rotating electron air valve knob 11 closes outlet
Mouthful 13-2, range finder module record displacement L2 are, and time T1 used；
S3, calculating：Infiltration coefficient K1=A*B* (L2-L1) * S/T1, wherein, A is conversion coefficient, it is necessary to carry out identical material
Material process of osmosis surveys infiltration demarcation, specifically refers to the conversion coefficient inquiry table of table 1, B is water density, typically takes 1g/cm3, S is survey
The cross-sectional area of graduated cylinder 13.
The conversion coefficient inquiry table of table 1
The application method of portable emulation permeability performance analyzer, portable emulation permeability performance analyzer is used to detect
The infiltration coefficient on road surface, what this infiltration coefficient mainly characterized is current vertically into road surface and vertical penetrate and side infiltration occurs
Situation, more conform to the actual infiltration situation in road surface, comprise the following steps：
S1, air-leakage test：Open air inlet 13-1, close gas outlet 13-2, air pressure sliding block 14 is still in measuring cylinder 13
Do not decline inside, then top air-tightness is good；Close air inlet 13-1, open gas outlet 13-2, air pressure sliding block 14 is still in measuring cylinder
Do not decline in 13, then bottom air-tightness is good, specifically, air pressure sliding block 14 to be moved to top and and the air pressure of measuring cylinder 13 first
Control device is in contact, and then opens Pneumatic controller, closes permeability cell 8, air is entered from measurement pipe top, discharges gas
Sliding block 14 is pressed, is not declined if being still in measuring cylinder 13, top air-tightness is good；Close Pneumatic controller, open permeability cell
8, air is entered from measurement pipe bottom, release air pressure sliding block 14, do not decline if being still in measuring cylinder 13, bottom air-tightness
It is good；
S2, test prepare：Pneumatic controller is adjusted to control the upper air of air pressure sliding block 14 in measuring cylinder 13 to enter
Amount, so that air pressure sliding block 14 is declined with the speed no more than 0.4cm/s；
S3, measurement：Air pressure sliding block 14 is moved to the top of measuring cylinder 13, and contacted with electromagnetic relay 2, and opens air inlet
Mouthful 13-1 and gas outlet 13-2, base 10 is positioned on road surface to be measured, and sealing ring 9 fully contacts with road surface, by electromagnetism after
Electrical equipment 2 discharges air pressure sliding block 14, after air pressure sliding block 14 is stable, range finder module record displacement l1, and pass through air pressure measuring apparatus
12 measure the now air pressure p1 in measuring cylinder 13, when air pressure sliding block 14 is close to 13 bottom of measuring cylinder, range finder module record position
L2 is moved, and the air pressure p2 now in measuring cylinder 13, and time t2 used are measured by air pressure measuring apparatus 12；
S4, calculating：Coefficient of permeability K 2=A*B2* g*h* (l2-l1) * S/ (S1*p*t2), wherein, A is conversion coefficient, and B is
Water density, S are the cross-sectional area of measuring cylinder 13, and S1 is base 10 and the contact area on road surface to be measured, and p=(p1+p2)/2, g is
Acceleration of gravity, h are pervious bed thickness in road surface to be measured.A, B, S therein are identical with the parameter in above-mentioned measurement infiltration coefficient.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification, equivalent change and modification made to above example, in the range of still falling within technical solution of the present invention.
Claims (10)
- A kind of 1. portable emulation permeability performance analyzer, it is characterised in that including：Base（10）, sealing is realized for being contacted with road surface to be measured；Measuring cylinder（13）, it is arranged on the base（10）Top, with the base（10）Between pass through permeability cell（8）Connection, And the permeability cell（8）On be provided with ventilation switch；Air pressure sliding block（14）, it is arranged on the measuring cylinder（13）It is internal and with the measuring cylinder（13）Side wall it is vertical, the gas Press sliding block（14）With the measuring cylinder（13）Side wall between be mobile sealing；Pneumatic controller, it is arranged on the measuring cylinder（13）Top, for controlling the measuring cylinder（13）The interior gas Press sliding block（14）Upper air inlet；Range finder module, for measuring the air pressure sliding block（14）In the measuring cylinder（13）Interior displacement and used time；The measuring cylinder（13）For sealing drum, upper inlet port（13-1）By the Pneumatic controller and external connection, under Portion gas outlet（13-2）Pass through the permeability cell（8）It is connected with extraneous air.
- 2. portable emulation permeability performance analyzer according to claim 1, it is characterised in that the base（10）Including One is located at the base（10）The die cavity of bottom（10-1）, the die cavity（10-1）Top and the permeability cell（8）Connection, it is described Base（10）Edge is provided with sealing ring（9）.
- 3. portable emulation permeability performance analyzer according to claim 1, it is characterised in that the measuring cylinder（13）With The air pressure sliding block（14）Diameter difference be not more than 0.15mm, and the air pressure sliding block（14）With the measuring cylinder（13）Between Contact face（14-3）It is provided with airtight and watertight padding seam（14-4）.
- 4. portable emulation permeability performance analyzer according to claim 1, it is characterised in that the air pressure sliding block（14） It is made of metal material, and the air pressure sliding block（14）Thickness be the measuring cylinder（13）The 1/5-1/3 of height.
- 5. portable emulation permeability performance analyzer according to claim 1, it is characterised in that the Pneumatic controller Including：Electromagnetic relay（2）, for fixing and discharging the air pressure sliding block（14）；Pressure control mouth（4）, with the measuring cylinder（13）Upper inlet port（13-1）Connection；Pressure control knob（3）, for adjusting the pressure control mouth（4）Opening and closing and its folding size.
- 6. portable emulation permeability performance analyzer according to claim 1, it is characterised in that the range finder module is to set Put in the measuring cylinder（13）The laser ranging system on top（1）.
- 7. portable emulation permeability performance analyzer according to claim 1, it is characterised in that the ventilation switch includes Electronics air valve（7）With electronics air valve knob（11）, the electronics air valve knob（11）For adjusting the electronics air valve（7）'s Opening and closing and its folding size.
- 8. portable emulation permeability performance analyzer according to claim 1, it is characterised in that also filled including barometric surveying Put（12）, for detecting the measuring cylinder（13）Internal air pressure.
- 9. the application method of the portable emulation permeability performance analyzer according to claim any one of 1-8, its feature exist In the portable emulation permeability performance analyzer is used to detect the infiltration coefficient on road surface, comprised the following steps：S1, air-leakage test：Open the air inlet（13-1）, close the gas outlet（13-2）, the air pressure sliding block（14） It is still in the measuring cylinder（13）Do not decline inside, then top air-tightness is good；Close the air inlet（13-1）, open the outlet Mouthful（13-2）, the air pressure sliding block（14）It is still in the measuring cylinder（13）Do not decline inside, then bottom air-tightness is good；S2, measurement：By the air pressure sliding block（14）It is moved to the measuring cylinder（13）Top, and open the air inlet（13- 1）, close the gas outlet（13-2）, by the base（10）It is positioned on road surface to be measured, discharges the air pressure sliding block（14）, Treat the air pressure sliding block（14）After static, the range finder module records displacement L1, then opens gas outlet（13-2）, close to institute State measuring cylinder（13）During bottom or the air pressure sliding block（14）After static, the range finder module records displacement L2, and used Time T1；S3, calculating：Infiltration coefficient K1=A*B* (L2-L1) * S/T1, wherein, A is conversion coefficient, and B is water density, and S is the survey Graduated cylinder（13）Cross-sectional area.
- 10. the application method of the portable emulation permeability performance analyzer according to claim any one of 1-8, its feature exist In the portable emulation permeability performance analyzer is used to detect the infiltration coefficient on road surface, comprised the following steps：S1, air-leakage test：Open the air inlet（13-1）, close the gas outlet（13-2）, the air pressure sliding block（14） It is still in the measuring cylinder（13）Do not decline inside, then top air-tightness is good；Close the air inlet（13-1）, open the outlet Mouthful（13-2）, the air pressure sliding block（14）It is still in the measuring cylinder（13）Do not decline inside, then bottom air-tightness is good；S2, test prepare：The Pneumatic controller is adjusted to control the measuring cylinder（13）The interior air pressure sliding block（14） Upper air inlet, so that the air pressure sliding block（14）Declined with the speed no more than 0.4cm/s；S3, measurement：By the air pressure sliding block（14）It is moved to the measuring cylinder（13）Top, and open the air inlet（13-1） With the gas outlet（13-2）, by the base（10）It is positioned on road surface to be measured, discharges the air pressure sliding block（14）, treat described Air pressure sliding block（14）After stable, the range finder module records displacement l1, and passes through air pressure measuring apparatus（12）Measurement is now described Measuring cylinder（13）Interior air pressure p1, treat the air pressure sliding block（14）Close to the measuring cylinder（13）During bottom, the ranging mould Block records displacement l2, and passes through the air pressure measuring apparatus（12）Measure the now measuring cylinder（13）Interior air pressure p2, and Time t2 used；S4, calculating：2=A*B of coefficient of permeability K2*g*h*(l2-l1)*S/（S1*p*t2）, wherein, A is conversion coefficient, and B is watertight Degree, S is the measuring cylinder（13）Cross-sectional area, S1 is the base（10）With the contact area on the road surface to be measured, p=（p1 +p2）/ 2, g are acceleration of gravity, and h is the pervious bed thickness in road surface to be measured.
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| CN117109836A (en) * | 2023-08-09 | 2023-11-24 | 黄山交投公路工程试验检测有限公司 | Bridge anti-seepage water detection device in bridge engineering |
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