CN208026592U - A kind of high-precision coefficient of permeability auto testing instrument - Google Patents
A kind of high-precision coefficient of permeability auto testing instrument Download PDFInfo
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- CN208026592U CN208026592U CN201820537327.6U CN201820537327U CN208026592U CN 208026592 U CN208026592 U CN 208026592U CN 201820537327 U CN201820537327 U CN 201820537327U CN 208026592 U CN208026592 U CN 208026592U
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- sealed cylindrical
- permeability
- bottom plate
- inner diameter
- console
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Abstract
The utility model provides a kind of high-precision coefficient of permeability auto testing instrument, belongs to construction engineering technical field.The tester includes microcontroller console, range sensor, permeable cylinder, upper sealed cylindrical, lower sealed cylindrical, plasticine, supporting rod and bottom plate；Microcontroller console connects range sensor；Permeable cylinder is connect with upper sealed cylindrical；Test sample is put between upper sealed cylindrical and lower sealed cylindrical, surrounding is filled by plasticine and sealed；Supporting rod connects microcontroller console and bottom plate；Apopore, annular groove and rectangular through-hole are carved on bottom plate.Microcontroller console detects the variation of water level in permeable cylinder by the signal communication with range sensor, finally obtains valid data and accurately calculates the coefficient of permeability of test sample, realizes the automatic measurement of water permeability coefficient of water permeable brick.The tester test period is short, and water consumption substantially reduces；Automatic control of single chip microcomputer, accuracy is high, easy-to-use.
Description
Technical field
The utility model is related to construction engineering technical field, particularly relates to a kind of high-precision coefficient of permeability and test automatically
Instrument.
Background technology
Currently, the propulsion of Chinese Urbanization not only will quickly will more develop towards green ecological.According to incompletely statistics, generation
For the Permeable stratum area of main cities mostly 50% or more, the bad road of these permeability changes natural soils vegetation in boundary
Living environment has blocked and has been exchanged with outside moisture, air and microorganism, thus caused a series of ecological problems.It is tight simultaneously
The surface gathered water of weight also brings along a series of safety problems, so the water permeability for the water-permeable brick used in road of mating formation directly affects
The construction of ecocity.《Green building assessment standard》(GB/T 50387-2006) mats formation to place in requirement, clearly proposes
Seepy material is promoted, outdoor pervious surface area is than 40% in terms of public building, pervious surface area ratio outside the room of residential quarter
45%, therefore water permeability coefficient of water permeable brick will be as an important indicator of evaluation ecocity.
National standard《Permeable pavement brick and porous pavement plate》(GB/T 25663-2010) appendix C provides coefficient of permeability
Test method and experimental provision, this device by producing three a diameter of 75mm~85mm, the identical cylindrical specimens of thickness,
Its thickness (L) and top surface area (A) are measured, sample surrounding is sealed with sealing material keeps its water-tight, opens water supply valve,
Until the overflow port of overflow sink and the overflow port outflow water of permeable cylinder are stablized, start with graduated cylinder from water outlet water receiving,
The water (Q) flowed out in time t is recorded, and measures the water level of permeable cylinder and the difference (H) of overflow sink water level, to utilize
Formula calculates the coefficient of permeability of the laboratory sample.Obvious this experimental provision can only test a kind of sample, and experimentation
The parameter of middle control and measurement is more, and device is there are cumbersome, phenomena such as pure manual test, test error is big.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of high-precision coefficient of permeability auto testing instruments, realize high
Efficiency, high-precision, automation experiment effect.
The tester includes microcontroller console, range sensor, permeable cylinder, upper sealed cylindrical, lower sealed cylindrical, rubber
Skin mud, supporting rod and bottom plate；Microcontroller console lower part connects range sensor；Permeable cylinder is set below range sensor,
Permeable cylinder lower part is connected through a screw thread with upper sealed cylindrical；Test sample is placed between sealed cylindrical and lower sealed cylindrical,
Test sample is filled by plasticine with upper sealed cylindrical and lower sealed cylindrical surrounding and is sealed；Lower sealed cylindrical is placed on bottom plate,
Supporting rod connects microcontroller console and bottom plate；Apopore, annular groove and rectangular through-hole are carved on bottom plate.Range sensor is examined
Survey the variation of water level and the signal intelligent detection test for passing through sensor with microcontroller console communication, microcontroller in permeable cylinder
Whether sample is placed, and finally obtains valid data and calculates coefficient of permeability using least square method.
Wherein, two sections cylinder of the lower sealed cylindrical by upper inner diameter more than lower inner diameter 10mm forms；Upper cylindrical section
Height is more than 20mm, is less than 30mm；Lower cylindrical section includes the lower sealed cylindrical of upper inner diameter φ 60mm, lower inner diameter φ 50mm
One, upper inner diameter φ 85mm, the lower sealed cylindrical two of lower inner diameter φ 75mm and upper inner diameter φ 110mm, lower inner diameter φ
Three three parts of lower sealed cylindrical of 100mm.
Bottom plate center is provided with the apopore of φ 12mm；Internal diameter is respectively three annulars of φ 50mm, φ 75mm, φ 100mm
Groove；It is provided with 10mm × 5mm rectangular through-holes close to plate outer side.
Upper sealed cylindrical is tapered, and with a scale, there is diameter phi 50mm, φ 75mm and φ 100mm inside upper sealed cylindrical
Three steps, each step height 20mm.There are three the height of step and positions for mark outside upper sealed cylindrical.
Permeable cylinder, upper sealed cylindrical, lower sealed cylindrical, supporting rod and microcontroller console shell are pmma material
It is made；Bottom plate is made of Q235 materials.
Range sensor is ultrasonic distance sensor.
Microcontroller console is made of starting switch, digital display screen and built-in STM32L series monolithics, in advance will
Microcontroller is run in burning program to microcontroller.
The above-mentioned technical proposal of the utility model has the beneficial effect that：
First, this test device measuring accuracy is high, and convenient and efficient, water consumption is few；By water level during test experiments with
The variation of time can obtain final result.
Second, the test sample of this tester increases, and has universality, including：Specimen finish φ 50mm~60mm (are applicable in
Prepare the test of sample in laboratory), φ 75mm~85mm (be suitable for GB/T25663-2010 test requests) and φ 100mm~
110mm (is suitable for CJJ/T 135-2009 test requests)；Thickness of sample is 20mm~50mm.
Third, this tester test result accuracy improve.
4th, this tester test period is short, it is only necessary to which 5 minutes or so, water level was exponentially decayed at any time.
5th, this tester can study water level and change with time trend, have very big meaning to drainage system.
Description of the drawings
Fig. 1 is the high-precision coefficient of permeability auto testing instrument structural schematic diagram of the utility model；
Fig. 2 is the high-precision coefficient of permeability auto testing instrument bottom plate vertical view of the utility model；
Fig. 3 is the upper sealed cylindrical structural schematic diagram of the high-precision coefficient of permeability auto testing instrument of the utility model；
Fig. 4 is one schematic diagram of sealed cylindrical under the high-precision coefficient of permeability auto testing instrument of the utility model；
Fig. 5 is two schematic diagram of sealed cylindrical under the high-precision coefficient of permeability auto testing instrument of the utility model；
Fig. 6 is three schematic diagram of sealed cylindrical under the high-precision coefficient of permeability auto testing instrument of the utility model.
Wherein：1- microcontroller consoles；2- range sensors；The permeable cylinders of 3-；The upper sealed cylindricals of 4-；Circle is sealed under 5-
Cylinder；6- plasticine；7- supporting rods；8- bottom plates；Sealed cylindrical one under 51-；Sealed cylindrical two under 52-；Sealed cylindrical three under 53-.
Specific implementation mode
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
The utility model provides a kind of high-precision coefficient of permeability auto testing instrument.
As shown in Figure 1,1 lower part of microcontroller console connects range sensor 2 in the tester；2 lower section of range sensor
Permeable cylinder 3 is set, and 3 lower part of permeable cylinder is connected through a screw thread with upper sealed cylindrical 4；Test sample is placed in sealed cylindrical 4
Between lower sealed cylindrical 5, test sample is filled by plasticine 6 with upper sealed cylindrical 4 and lower 5 surrounding of sealed cylindrical and is sealed；
Lower sealed cylindrical 5 is placed on bottom plate 8, and supporting rod 7 connects microcontroller console 1 and bottom plate 8；Apopore, annular are carved on bottom plate 8
Groove and rectangular through-hole.
As shown in Figure 4, Figure 5 and Figure 6, two sections of the lower sealed cylindrical 5 by upper inner diameter more than lower inner diameter 10mm are justified
Cylinder composition；Epimere cylinder heights are more than 20mm, are less than 30mm；Lower cylindrical section includes upper inner diameter φ 60mm, lower inner diameter φ
The lower sealed cylindrical 1 of 50mm, upper inner diameter φ 85mm, lower inner diameter φ 75mm lower sealed cylindrical 2 52 and upper inner diameter
3 53 three parts of lower sealed cylindrical of φ 110mm, lower inner diameter φ 100mm.
As shown in Fig. 2, 8 center of bottom plate is provided with the apopore of φ 12mm；Internal diameter is respectively φ 50mm, φ 75mm, φ 100mm
Three annular grooves；The rectangular through-hole of 10mm × 5mm is provided with close to plate outer side.Bottom plate 8 and supporting rod 7 pass through rectangular through-hole
It is fixedly connected.
As shown in figure 3, upper sealed cylindrical 4 is tapered, and it is with a scale, there are diameter phi 50mm, φ inside upper sealed cylindrical 4
Three steps of 75mm and φ 100mm, each step height 20mm.
In specifically used, water is added in 3 top of permeable cylinder, and apopore uses beaker or water pipe to receive and penetrates test specimens below
The water of product.
Test sample is according to GB/T0081-2002《Standard for test methods of mechanical properties of ordinary concrete》It makes and through maintenance
Reach test age, test sample size is：Diameter phi 50mm~60mm, φ 75mm~85mm or φ 100mm~
110mm, thickness of sample are 30mm~50mm.
Then it tests as follows：
(1) it according to the diameter dimension of test sample, is loaded into the lower sealed cylindrical 5 of correspondingly-sized, adjustment position makes
It obtains test sample and the center line of lower sealed cylindrical 5 essentially coincides；
(2) plasticine 6 is filled into the gap of test sample and lower 5 surrounding of sealed cylindrical；
(3) upper sealed cylindrical 4 with a scale is taken to tip upside down on test sample top, adjustment position makes upper sealed cylindrical with a scale
4 essentially coincide with the center line of test sample；
(4) above-mentioned package system is overturn rapidly, plasticine 6 is filled into test sample and upper sealed cylindrical 4 with a scale
It in the gap of surrounding, presses closely, 1~2mm of top until crossing lower sealed cylindrical 5；
(5) above-mentioned package system is flipped back to rapidly just, permeable cylinder 3 is connected through a screw thread, be slowly threaded on sealing
On cylinder 4；
(6) and then by above-mentioned package system it is fixed in the groove of bottom plate 8；
(7) water is slowly added into permeable cylinder 3, whether detection water only flows out from apopore bottom, if it is not, then again
Above-mentioned steps (2)~(7) are operated, if so, carrying out next step；
(8) 1 starting switch of microcontroller console is opened, test program starts, and mensuration distance sensor 2 arrives test sample
Highly；
(10) added water into permeable cylinder 3 at 3 graduation mark of permeable cylinder or more about 5cm stop, later water level start by
Gradually decline, range sensor 2 detects that water level just drops to H0When height start recording at this time water level be 0cm, later every
Δ t=500ms records a water level relative drop height；
(11) water level continues to decline, and it is more than that 10cm is automatically stopped timing to wait water level decreasings height；
(12) data of step (10)~(11) acquisition are based on, microcontroller runs program according to following least square method formula
Coefficient of permeability is calculated, and it will be shown on digital display screen：
In formula：
d1--- the diameter of permeable cylinder；
d2--- the lower inner diameter for the lower sealed cylindrical that step (1) is chosen；
The thickness of L --- test sample；
H0--- vertical range of the test sample to 0 graduation mark；
Δt--- timed interval；
N --- frequency of reckoning by time；
Hi--- vertical range of the test sample surface to water level after i time interval.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (6)
1. a kind of high-precision coefficient of permeability auto testing instrument, it is characterised in that：Including microcontroller console (1), Distance-sensing
Device (2), permeable cylinder (3), upper sealed cylindrical (4), lower sealed cylindrical (5), plasticine (6), supporting rod (7) and bottom plate (8)；It is single
Piece machine console (1) lower part connects range sensor (2)；Permeable cylinder (3), permeable cylinder are set below range sensor (2)
(3) lower part is connected through a screw thread with upper sealed cylindrical (4)；Test sample be placed in sealed cylindrical (4) and lower sealed cylindrical (5) it
Between, test sample is filled by plasticine (6) with upper sealed cylindrical (4) and lower sealed cylindrical (5) surrounding and is sealed；Lower sealed cylindrical
(5) it is placed on bottom plate (8), supporting rod (7) connects microcontroller console (1) and bottom plate (8)；Bottom plate is carved with apopore, ring on (8)
Connected in star and rectangular through-hole.
2. high-precision coefficient of permeability auto testing instrument according to claim 1, it is characterised in that：The lower sealed cylindrical
(5) the two sections cylinder by upper inner diameter more than lower inner diameter 10mm forms；Epimere cylinder heights are more than 20mm, are less than
30mm；Lower cylindrical section includes the lower sealed cylindrical one (51) of upper inner diameter φ 60mm, lower inner diameter φ 50mm, upper inner diameter φ
It is close under 85mm, the lower sealed cylindrical two (52) of lower inner diameter φ 75mm and upper inner diameter φ 110mm, lower inner diameter φ 100mm
Seal cylinder three (53) three parts.
3. high-precision coefficient of permeability auto testing instrument according to claim 1, it is characterised in that：In the bottom plate (8)
The heart is provided with the apopore of φ 12mm；Internal diameter is respectively three annular grooves of φ 50mm, φ 75mm, φ 100mm；Outside bottom plate
Side is provided with rectangular through-hole.
4. high-precision coefficient of permeability auto testing instrument according to claim 1, it is characterised in that：The upper sealed cylindrical
(4) tapered and with a scale, there are three steps of diameter phi 50mm, φ 75mm and φ 100mm inside upper sealed cylindrical (4), often
A step height 20mm.
5. high-precision coefficient of permeability auto testing instrument according to claim 1, it is characterised in that：The permeable cylinder
(3), upper sealed cylindrical (4), lower sealed cylindrical (5), supporting rod (7) and microcontroller console (1) shell are pmma material
It is made；Bottom plate (8) is made of Q235 materials.
6. high-precision coefficient of permeability auto testing instrument according to claim 1, it is characterised in that：The range sensor
(2) it is ultrasonic distance sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820537327.6U CN208026592U (en) | 2018-04-16 | 2018-04-16 | A kind of high-precision coefficient of permeability auto testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820537327.6U CN208026592U (en) | 2018-04-16 | 2018-04-16 | A kind of high-precision coefficient of permeability auto testing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208026592U true CN208026592U (en) | 2018-10-30 |
Family
ID=63910919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820537327.6U Expired - Fee Related CN208026592U (en) | 2018-04-16 | 2018-04-16 | A kind of high-precision coefficient of permeability auto testing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208026592U (en) |
-
2018
- 2018-04-16 CN CN201820537327.6U patent/CN208026592U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181030 Termination date: 20200416 |