CN110320344A - A kind of rainfall simulator and method for centrifugal model test - Google Patents
A kind of rainfall simulator and method for centrifugal model test Download PDFInfo
- Publication number
- CN110320344A CN110320344A CN201910617418.XA CN201910617418A CN110320344A CN 110320344 A CN110320344 A CN 110320344A CN 201910617418 A CN201910617418 A CN 201910617418A CN 110320344 A CN110320344 A CN 110320344A
- Authority
- CN
- China
- Prior art keywords
- rainfall
- atomizer
- water
- fixed plate
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 28
- 230000005484 gravity Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 239000002689 soil Substances 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000004088 simulation Methods 0.000 claims description 13
- 238000000889 atomisation Methods 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 description 11
- 238000000465 moulding Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/68—Arrangements for adjusting the position of spray heads
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of rainfall simulator and method for centrifugal model test, several spray head fixation holes (15) and several bolts hole (16) are disposed in atomizer fixed plate (14)；It further include rainfall calibration board mount (18) of rainfall scaling board (17), one group of different height；Wherein several bolts hole (16) are arranged in rainfall scaling board (17) and rainfall calibration board mount (18)；Atomizer fixed plate (14) and rainfall calibration board mount (18) are fixed on model casing (19) by bolt hole (16).The present invention can determine the rainfall area coverage of atomizer in test and the amount of deflection compared with rainfall area coverage under gravity condition using rainfall scaling board, and further determines that the number of required atomizer and lay spacing；It can control the laying of atomizer, using atomizer fixed plate to realize the rainfall of different zones.
Description
Technical field
The invention belongs to geotechnical centrifugal model test fields, and in particular to one kind can be real in geotechnical centrifugal model test
The controllable rainfall simulation system in existing intensity controlled, region.
Background technique
Centrifugal model test is a kind of particularly important scientific research method in civil engineering and its related discipline, it is with centrifugal force
Simulated gravity makes small scaled model have ess-strain process identical with prototype, overcomes conventional model test because size contracts
Small and bring stress loss.It is domestic each since its test effect is good, application range is relatively broad although starting late
Big colleges and universities and scientific research institutions competitively introduce, and promote the development of this technology.The geotechnical centrifuge performance in China gradually mentions at present
It rises, power has broken through 500gt, and the analog machines such as shake table, manipulator, optical-fibre channel are gradually popularized.But the mould in centrifuge
Quasi- rainfall is not well solved always but, limits the trial stretch of centrifuge.Rainwater can cohesive strength to Rock And Soil, anti-
It cuts intensity etc. to impact, then causes many engineering problems, for example the main predisposing factors of stability of slope problem are exactly rainfall
And earthquake.Lot of domestic and international scholar still has many problems not solve this existing research.Tsinghua University's state key is real
Room independent development centrifugal field rainfall simulation system is tested, the set systematic comparison is complicated and needs processing mould molding box.The Changjiang river science
Ministry of Water Resources, institute rock-soil mechanics and engineering key lab have developed a set of rainfall simulation method, mainly there is water box, filter layer, infiltration
The composition such as permeable layers, wherein water box side is water storage box, and the other side is permeable formation and filter layer.The system is also complex, but
It is that rainfall can not be controlled.The centrifuge drop of joint Tsinghua University, China Road & Bridge Engineering Co., Ltd research and development
Rain device increases pressing member and controls air pressure in airtight water tank, and then controls the rainfall intensity of some spray head.Although
There are many researchers to have been developed that geotechnical centrifugal model test rainer, but the effect is unsatisfactory, however it remains each
The different problems of kind.
Summary of the invention
In view of the above-mentioned drawbacks of the prior art or insufficient, the object of the present invention is to provide one kind to be used for centrifugal mold
The rainfall simulator and method of type test, the apparatus cost is low, structure is simple, is not only able to realize uniform rainfall, and can
To control rainfall region and rainfall intensity, the rainfall simulation of different zones and varying strength is realized.It can by scaling board
Atomizer precipitation coverage area is descended during the test with determination before the test, to realize the accurate control to rainfall range.
In order to reach above-mentioned simulation effect, the present invention uses following solution:
A kind of rainfall simulator for centrifugal model test, including centrifugal chamber external water source (4), water-supply-pipe (5), rotation
Adapter (6), solenoid valve (7), current divider (8), Zhi Liuguan (9), flowmeter (10), 2 hydraulic pressure sensors (11), regulating valves
(12), atomizer (13) and atomizer fixed plate (14) are wherein disposed with several spray heads in atomizer fixed plate (14)
Fixation hole (15) and several bolts hole (16)；It further include the rainfall calibration board mount of rainfall scaling board (17), one group of different height
(18)；It is wherein arranged with several bolts hole (16) in rainfall scaling board (17) and rainfall calibration board mount (18), rainfall calibration
Plate (17) exterior contour and size are identical as model casing in-profile and size, and rainfall scaling board (17) can after being put into model casing
It is bonded completely with model casing；Atomizer fixed plate (14) and rainfall calibration board mount (18) pass through bolt hole (16) and are fixed to mould
On molding box (19)；
The water inlet and water outlet of rotary joint (6) be separately connected water-supply-pipe (5), wherein entering water with rotary joint (6)
Mouthful connection the external centrifugal chamber external water source (4) of water-supply-pipe (5), the water-supply-pipe (5) being connect with the water outlet of rotary joint (6) into
It is arranged after entering centrifugal chamber along centrifuge pivoted arm, is sequentially ingressed into solenoid valve (7) and flowmeter (10), first hydraulic pressure sensor
(11), hydraulic-pressure regulating valve (12) and second hydraulic pressure sensor (11) then connect Zhi Liuguan (9) by current divider (8), every branch
Last several atomizers (13) of connection of flow tube (9)；Atomizer (13) is fixed on atomization spray by spray head fixation hole (15)
In head fixed plate (14), atomizer fixed plate (14) is bolted on model casing (19)；When carrying out proving operation,
Rainfall scaling board (17) is bolted in rainfall calibration board mount (18), and it is solid by bolt that board mount (18) are demarcated in rainfall
It is scheduled on model casing (19), the test soil body used is paved on rainfall scaling board (17), is demarcated by using the rainfall of different height
Board mount (18) adjusts distance of the soil body apart from atomizer (13) in rainfall scaling board (17).
The rainfall simulator, the water-supply-pipe (5) are managed using high-strength PU, specification TU10*6.5, outer diameter
10mm, internal diameter 6.5mm, can compression resistance 1Mpa, -5 DEG C of operating temperature~100 DEG C, length can according to test specific requirements cloth
It sets.
The rainfall simulator, the rotary joint (6) are 360 ° of rotary joints, and one-in-and-one-out type is suitable for
4-10mm tracheae can be connected with water-supply-pipe (5).
The rainfall simulator, the atomizer (13) use watcher FN nozzle, operating pressure 6.9bar
~11.8bar, 40~28 μm of average grain diameter, spray shapes are 60 ° of solid circular cones.
The rainfall simulator, the atomizer fixed plate (14) are made of aluminium alloy plate, length ratio
The used long 40cm of model casing, for width than model casing degree 20mm, both ends arrange two bolts hole for fixing atomizer
Plate (14) is fixed on model casing, and the spray head fixation hole (15) that several sizes of intermediate arrangement match with atomizer (13) is used for
Arrange spray head.
The rainfall simulator, the rainfall scaling board (17) using aluminium alloy plate make, size with adopted
Matched with model casing size；Middle part rectangular area is to lower recess 10cm, for accommodating the soil body, two of rainfall scaling board (17)
Long side arranges several bolts hole for fixing rainfall calibration board mount (18).
The rainfall simulator, rainfall calibration board mount (18) is made of aluminium alloy plate, for fixing
Scaling board (17), shape are right angle Z-shaped.
The method for carrying out simulated rainfall according to the rainfall simulator, comprising the following steps:
Step 1: laying water-carriage system；First with rotary joint by centrifugal chamber external water source access centrifugal chamber until mould
Molding box；Solenoid valve, flowmeter, hydraulic pressure sensor, regulating valve are successively installed and fixed on water-supply-pipe；It is utilized in model casing overhead
Water-supply-pipe is shunted and is connected Zhi Liuguan by current divider, shunt quantity according to test it needs to be determined that；Mist is connected in the end of Zhi Liuguan
Change spray head, atomizer is fixed in atomizer fixed plate, and atomizer fixed plate is bolted on model casing；
Step 2: calibration spray head overlay area；According to the rainfall scaling board of experimental selection desired height, in rainfall scaling board
Rainfall rainfall calibration board mount is fixed in upper installation, and rainfall scaling board is then fixed on model casing using rainfall calibration board mount
On；Atomizer fixed plate is fixed on model casing using bolt, and lays an atomizer in the middle region of model casing
Domain, and the test soil body used is paved on rainfall scaling board；In gravity condition Imitating rainfall, pass through the soil body on measurement scaling board
Humidification zones determine the rainfall overlay area of single under gravity condition atomizer；Then start centrifuge and be increased to examination
Required revolving speed is tested, opens after solenoid valve carries out rainfall simulation and shuts down；It is measured again after shutdown and is laid with the test soil body on scaling board
Humidification zones can then determine the rainfall overlay area of single atomizer under test conditions；Pass through the comparison covering of rainfall twice
Region is the amount of deflection that can determine atomizer rainfall region during the test, and atomizer position during the test
With the relationship between rainfall overlay area；According to the relationship and required rainfall area coverage is tested, determines the number of atomizer
Amount and laying spacing；
Step 3: being dropped in conjunction with needed for test according to determining in monitoring process atomizer area coverage and amount of deflection
Rain area determines the laying spacing between each atomizer fixed plate, the i.e. horizontal spacing of atomizer and each atomization
Constant spacing of the spray head in atomizer fixed plate, the i.e. longitudinal pitch of atomizer, pass through regulating valve and hydraulic pressure sensor
Control simulates the size of raindrop to realize the rainfall of varying strength, controls the gross precipitation of simulated rainfall, by flowmeter to control
Rainfall duration processed.
Advantages of the present invention is as follows:
The present invention establishes a kind of simulator that rainfall can be realized in geotechnical centrifuge with relatively simple component,
The apparatus structure is simple, easy to operate, is capable of the geotechnical centrifuge model casing of mating various sizes, passes through the atomization of atomizer
Effect realizes uniform rainfall, eliminates water droplet excessive the problem of causing impact to test model from the root, can pass through adjusting
Valve controls hydraulic pressure to realize the rainfall of varying strength, can control rainfall region by the arrangement of rainfall spray head.
Detailed description of the invention
Fig. 1 is rainer structure connection diagram；
Fig. 2 is atomizer fixed plate design drawing；
Fig. 3 is rainfall scaling board and rainfall scaling board support Design figure；
Fig. 4 is rainfall scaling board scheme of installation；
Specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
A kind of rainfall simulator for centrifugal model test as shown in Figure 1:, the rainer include water-carriage system,
Rainfall simulation system and calibration system.Wherein, the water-carriage system includes centrifugal chamber external water source, water-supply-pipe, rotary joint, 2
A hydraulic pressure sensor, regulating valve, solenoid valve, flowmeter, current divider, Zhi Liuguan composition, the rainfall simulation system include atomization
Spray head and atomizer fixed plate are wherein disposed with several spray head fixation holes and 2 bolts hole in atomizer fixed plate.It is described
Calibration system includes rainfall scaling board, rainfall calibration board mount.Wherein arranged on rainfall scaling board and rainfall calibration board mount
There is bolt hole.
Water-carriage system: water source is provided for atomizer and adjusts hydraulic pressure.Using centrifugal chamber external water source as water source, such as
Test the water sources such as indoor tap water.Water transmits by water-supply-pipe and connects all parts, finally enters atomizer.Due to from
The components such as intra-ventricle model casing, pivoted arm high speed rotation during the test, it is therefore desirable to use rotary joint.The work of rotary joint
With being to connect water-supply-pipe and non-rotary external water-supply-pipe inside high-speed rotating centrifugal chamber during the test.Solenoid valve is defeated
The switch of water pipe.The effect of current divider is to shunt water, the moisture in water-supply-pipe is flowed in each Zhi Liuguan, then be by Zhi Liuguan
Atomizer provides water.During specific test, water delivery length of tube and laying, rotary joint position, tributary length of tube and cloth
If the laying with solenoid valve is determined according to centrifugal chamber concrete condition.
Rainfall simulation system: including atomizer and atomizer fixed plate.The atomizer that the present invention uses is Shanghai
Watcher's atomizer, 20~40 μm of atomizing particle size under the pressure of 6.9bar~11.8bar, spray shapes are 60 ° of filled circles
Taper is atomized extremely uniform.The effect of first hydraulic pressure sensor is the hydraulic pressure monitored in aqueduct, and the effect of regulating valve is
The hydraulic pressure in water-supply-pipe is adjusted, the effect of second hydraulic pressure sensor is the hydraulic pressure after monitoring is adjusted.It is sensed by two hydraulic pressure
Device and regulating valve can control the hydraulic pressure in water-supply-pipe and Zhi Liuguan, and then control atomizing particle size.The effect of flowmeter is monitoring
The water of simulated precipitation, controls rainfall duration.It can be realized by hydraulic pressure adjusting and the collaborative work of flowmeter each strong
The rainfall simulation of degree.
The effect of atomizer fixed plate is to arrange and fix atomizer.The spray head arranged in atomizer fixed plate is solid
Determine hole size and atomizer is adapted, for fixing atomizer.Atomizer fixed plate have fixed pitch of holes 10cm,
Several models such as 20cm, 30cm, the cone area that can be formed according to atomizer during test determine.Atomizer fixed plate
The bolt hole at both ends is used to atomizer fixed plate being fixed on model casing.Atomizer fixed plate is along model casing length direction
Arrangement, its spacing depend on the cone area of atomizer formation during test.
Calibration system: the effect of rainfall scaling board is the coverage area of the determining raindrop of model under test conditions before the test
And model raindrop are to the impact degree of the test soil body.Rainfall scaling board is as shown in Fig. 3, is made of aluminium alloy.Rainfall calibration
Plate is a rectangular slab, and bottom is the container of groove-like.Rainfall scaling board can by the rainfall of different height demarcate board mount and
Bolt is fixed on model casing.
In conjunction with 1~attached drawing of attached drawing 4, the analogy method of rainfall is illustrated.
Step 1: laying water-carriage system.First with rotary joint by centrifugal chamber external water source access centrifugal chamber until mould
Molding box.Solenoid valve, flowmeter, hydraulic pressure sensor, regulating valve are successively installed and fixed on water-supply-pipe.It is utilized in model casing overhead
Water-supply-pipe is shunted and is connected Zhi Liuguan by current divider, shunt quantity according to test it needs to be determined that.Mist is connected in the end of Zhi Liuguan
Change spray head, atomizer is fixed in atomizer fixed plate, and atomizer fixed plate is bolted on model casing.
Step 2: calibration spray head overlay area.Before the formal beginning of test, first according to the drop of experimental selection desired height
Between rain scaling board, rainfall rainfall calibration board mount is fixed in installation on rainfall scaling board, then utilizes rainfall scaling board branch
Rainfall scaling board is fixed on model casing by frame.Atomizer fixed plate is fixed on model casing using bolt, and in model
The central region of case lays an atomizer, and the test soil body used is paved on rainfall scaling board.In gravity condition lower die
Quasi- rainfall determines the rainfall area of coverage of atomizer single under gravity condition by the humidification zones of the soil body on measurement scaling board
Domain.Then (rotary joint all will be in the case where centrifuge drives revolving speed needed for starting centrifuge and being increased to test with lower component in Fig. 1
Rotate in the horizontal plane together), it opens after solenoid valve carries out rainfall simulation and shuts down.It measures on scaling board and is laid with again after shutdown
Test soil body humidification zones can then determine the rainfall overlay area of single atomizer under test conditions.By comparing twice
Rainfall overlay area is the amount of deflection that can determine atomizer rainfall region during the test, and is atomized during the test
Relationship between nozzle position and rainfall overlay area.According to the relationship and required rainfall area coverage is tested, determines atomization
The quantity and laying spacing of spray head.
Step 3: being dropped in conjunction with needed for test according to determining in monitoring process atomizer area coverage and amount of deflection
Rain area determines laying spacing (i.e. the horizontal spacing of atomizer) and each atomization spray between each atomizer fixed plate
(i.e. the longitudinal pitch of atomizer, can be by using the atomization of different spacing for constant spacing of the head in atomizer fixed plate
Spray head fixed plate control).The rainfall of varying strength is realized by regulating valve and the size of hydraulic pressure sensor control simulation raindrop,
The gross precipitation of simulated rainfall is controlled, by flowmeter to control rainfall duration.It can be tested after having set.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (8)
1. a kind of rainfall simulator for centrifugal model test, which is characterized in that including centrifugal chamber external water source (4), defeated
Water pipe (5), rotary joint (6), solenoid valve (7), current divider (8), Zhi Liuguan (9), flowmeter (10), 2 hydraulic pressure sensors
(11), regulating valve (12), atomizer (13) and atomizer fixed plate (14) are wherein arranged in atomizer fixed plate (14)
There are several spray head fixation holes (15) and several bolts hole (16)；It further include the rainfall of rainfall scaling board (17), one group of different height
It demarcates board mount (18)；Wherein several bolts hole are arranged in rainfall scaling board (17) and rainfall calibration board mount (18)
(16), rainfall scaling board (17) exterior contour and size are identical as model casing in-profile and size, and rainfall scaling board (17) is put
It can be bonded completely with model casing after entering model casing；Atomizer fixed plate (14) and rainfall calibration board mount (18) pass through bolt
Hole (16) is fixed on model casing (19)；
The water inlet and water outlet of rotary joint (6) are separately connected water-supply-pipe (5), wherein the water inlet with rotary joint (6) connects
The external centrifugal chamber external water source (4) of the water-supply-pipe (5) connect, the water-supply-pipe (5) that is connect with the water outlet of rotary joint (6) enter from
It is arranged after ventricle along centrifuge pivoted arm, is sequentially ingressed into solenoid valve (7) and flowmeter (10), first hydraulic pressure sensor (11), water
Regulating valve (12) and second hydraulic pressure sensor (11) are pressed, then connects Zhi Liuguan (9) by current divider (8), every Zhi Liuguan (9)
Last several atomizers (13) of connection；Atomizer (13) is fixed on atomizer fixed plate by spray head fixation hole (15)
(14) on, atomizer fixed plate (14) is bolted on model casing (19)；When carrying out proving operation, rainfall calibration
Plate (17) is bolted in rainfall calibration board mount (18), and rainfall calibration board mount (18) is bolted on model
On case (19), it is paved with the test soil body used on rainfall scaling board (17), demarcates board mount by using the rainfall of different height
(18) distance of the soil body apart from atomizer (13) in rainfall scaling board (17) is adjusted.
2. rainfall simulator as described in claim 1, which is characterized in that the water-supply-pipe (5) is managed using high-strength PU, rule
Lattice are TU10*6.5, outer diameter 10mm, internal diameter 6.5mm, can compression resistance 1Mpa, -5 DEG C of operating temperature~100 DEG C, length can press
According to test specific requirements arrangement.
3. rainfall simulator as described in claim 1, which is characterized in that the rotary joint (6) is that 360 ° of rotations connect
Head, one-in-and-one-out type are suitable for 4-10mm tracheae, can be connected with water-supply-pipe (5).
4. rainfall simulator as described in claim 1, which is characterized in that the atomizer (13) uses watcher FN
Nozzle, operating pressure 6.9bar~11.8bar, 40~28 μm of average grain diameter, spray shapes are 60 ° of solid circular cones.
5. rainfall simulator as described in claim 1, which is characterized in that the atomizer fixed plate (14) uses aluminium
Alloy sheets production, length is 40cm longer than used model casing, and width arranges two bolts hole than model casing degree 20mm, both ends
For atomizer fixed plate (14) to be fixed on model casing, what several sizes of intermediate arrangement and atomizer (13) matched
Spray head fixation hole (15) is for arranging spray head.
6. rainfall simulator as described in claim 1, which is characterized in that the rainfall scaling board (17) uses aluminium alloy
Plate production, size match with used model casing size；Middle part rectangular area is to lower recess 10cm, for accommodating the soil body,
Two long sides of rainfall scaling board (17) arrange several bolts hole for fixing rainfall calibration board mount (18).
7. rainfall simulator as described in claim 1, which is characterized in that rainfall calibration board mount (18) uses aluminium
Alloy sheets production, for fixing scaling board (17), shape is right angle Z-shaped.
8. the method that -7 any rainfall simulators carry out simulated rainfall according to claim 1, which is characterized in that including
Following steps:
Step 1: laying water-carriage system；First with rotary joint by centrifugal chamber external water source access centrifugal chamber until model casing；
Solenoid valve, flowmeter, hydraulic pressure sensor, regulating valve are successively installed and fixed on water-supply-pipe；Shunting is utilized in model casing overhead
Water-supply-pipe is shunted and is connected Zhi Liuguan by device, shunt quantity according to test it needs to be determined that；In the connection atomization spray of the end of Zhi Liuguan
Head, atomizer are fixed in atomizer fixed plate, and atomizer fixed plate is bolted on model casing；
Step 2: calibration spray head overlay area；According to the rainfall scaling board of experimental selection desired height, pacify on rainfall scaling board
Dress fixes rainfall rainfall calibration board mount, and then rainfall scaling board is fixed on model casing using rainfall calibration board mount；
Atomizer fixed plate is fixed on model casing using bolt, and lay an atomizer model casing central region,
And the test soil body used is paved on rainfall scaling board；In gravity condition Imitating rainfall, pass through the soil body on measurement scaling board
Humidification zones determine the rainfall overlay area of atomizer single under gravity condition；Then start centrifuge and be increased to test
Required revolving speed is opened after solenoid valve carries out rainfall simulation and is shut down；Measured again after shutdown be laid on scaling board test the soil body it is wet
Profit region can then determine the rainfall overlay area of single atomizer under test conditions；By comparing the rainfall area of coverage twice
Domain be can determine the amount of deflection in atomizer rainfall region during the test, and during the test atomizer position with
Relationship between rainfall overlay area；According to the relationship and required rainfall area coverage is tested, determines the quantity of atomizer
And lay spacing；
Step 3: according to determining in monitoring process atomizer area coverage and amount of deflection, the rainfall face in conjunction with needed for test
Product, determines the laying spacing between each atomizer fixed plate, the i.e. horizontal spacing of atomizer and each atomizer
Constant spacing in atomizer fixed plate, the i.e. longitudinal pitch of atomizer are controlled by regulating valve and hydraulic pressure sensor
The size of raindrop is simulated to realize the rainfall of varying strength, the gross precipitation of simulated rainfall is controlled by flowmeter, to control drop
Rain lasts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617418.XA CN110320344A (en) | 2019-07-10 | 2019-07-10 | A kind of rainfall simulator and method for centrifugal model test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617418.XA CN110320344A (en) | 2019-07-10 | 2019-07-10 | A kind of rainfall simulator and method for centrifugal model test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110320344A true CN110320344A (en) | 2019-10-11 |
Family
ID=68121678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910617418.XA Pending CN110320344A (en) | 2019-07-10 | 2019-07-10 | A kind of rainfall simulator and method for centrifugal model test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110320344A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855958A (en) * | 2020-07-10 | 2020-10-30 | 河海大学 | Indoor landslide rainfall analogue means for physical model test |
| CN113333203A (en) * | 2021-05-28 | 2021-09-03 | 浙江大学 | Rainfall simulation device component capable of adjusting nozzle position and adjusting method thereof |
| CN113447637A (en) * | 2021-06-21 | 2021-09-28 | 哈尔滨工业大学（深圳） | Slope rainfall device with controllable horizontal spatial variability and method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203108697U (en) * | 2013-03-12 | 2013-08-07 | 长安大学 | Rainfall device for geotechnical centrifuge model test |
| CN104101696A (en) * | 2014-07-28 | 2014-10-15 | 交通运输部天津水运工程科学研究所 | Rainfall device for earthwork centrifuge |
| CN204165973U (en) * | 2014-10-30 | 2015-02-18 | 李龙起 | A kind of novel centrifugal misting rainfall model test unit |
| CN104391103A (en) * | 2014-10-27 | 2015-03-04 | 中国水利水电科学研究院 | Rainfall analog method and device used for centrifugal model |
| CN205157554U (en) * | 2015-11-27 | 2016-04-13 | 车文越 | Geotechnique's centrifugal separator rainfall device |
| CN108303516A (en) * | 2018-02-23 | 2018-07-20 | 湖州职业技术学院 | It is a kind of geotechnique centrifugal field in rainfall and SEA LEVEL VARIATION Work condition analogue device and method |
-
2019
- 2019-07-10 CN CN201910617418.XA patent/CN110320344A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203108697U (en) * | 2013-03-12 | 2013-08-07 | 长安大学 | Rainfall device for geotechnical centrifuge model test |
| CN104101696A (en) * | 2014-07-28 | 2014-10-15 | 交通运输部天津水运工程科学研究所 | Rainfall device for earthwork centrifuge |
| CN104391103A (en) * | 2014-10-27 | 2015-03-04 | 中国水利水电科学研究院 | Rainfall analog method and device used for centrifugal model |
| CN204165973U (en) * | 2014-10-30 | 2015-02-18 | 李龙起 | A kind of novel centrifugal misting rainfall model test unit |
| CN205157554U (en) * | 2015-11-27 | 2016-04-13 | 车文越 | Geotechnique's centrifugal separator rainfall device |
| CN108303516A (en) * | 2018-02-23 | 2018-07-20 | 湖州职业技术学院 | It is a kind of geotechnique centrifugal field in rainfall and SEA LEVEL VARIATION Work condition analogue device and method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855958A (en) * | 2020-07-10 | 2020-10-30 | 河海大学 | Indoor landslide rainfall analogue means for physical model test |
| CN113333203A (en) * | 2021-05-28 | 2021-09-03 | 浙江大学 | Rainfall simulation device component capable of adjusting nozzle position and adjusting method thereof |
| CN113333203B (en) * | 2021-05-28 | 2022-08-05 | 浙江大学 | Rainfall simulation device component capable of adjusting nozzle position and adjusting method thereof |
| CN113447637A (en) * | 2021-06-21 | 2021-09-28 | 哈尔滨工业大学（深圳） | Slope rainfall device with controllable horizontal spatial variability and method thereof |
| CN113447637B (en) * | 2021-06-21 | 2022-03-01 | 哈尔滨工业大学（深圳） | Slope rainfall device with controllable horizontal spatial variability and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110320344A (en) | A kind of rainfall simulator and method for centrifugal model test | |
| CN105004646B (en) | A kind of indoors artificial simulated rain trails system | |
| CN102297834B (en) | Dry-wet circulation climate hypergravity simulation system | |
| CN204613330U (en) | A kind of rain test chamber | |
| CN201556340U (en) | Movable type adjustable rainfall simulator | |
| CN104330320B (en) | Device for measuring combined action of washout and high-temperature corrosion of oil well tubular column | |
| CN108760609A (en) | Environment simulation test system for realizing multi-physical-field coupling | |
| CN101776530B (en) | System and method for testing indoor natural ventilating model of building | |
| CN104756826B (en) | A kind of improved wind-proof intelligent Sprinkling Irrigation | |
| CN106198341A (en) | Precipitation infiltration column simulation system and Unsaturated Hydraulic Conductivity assay method | |
| CN107610577B (en) | Hydrologic cycle simulation experiment system and experimental method | |
| CN107064458A (en) | It is a kind of to produce the artificially-simulated rainfall device and method of Various Complex rainfall pattern | |
| CN109030291A (en) | Rock mass discontinuity three-dimensional network grouting test macro | |
| CN207703680U (en) | A kind of infiltration experiment device loaded | |
| CN110178595A (en) | The vegetation cover model casing of simulation climate environmental change and rainfall change in time and space | |
| CN110133225A (en) | A kind of experimental rig and test method of the performance analysis fisstured flow of centrifuge modelling drought and waterlogging racing | |
| CN110090750A (en) | Automatically control even compensation boundary rainfall simulator and simulated rainfall method | |
| CN110749517A (en) | Model test device and method for dynamic characteristics of roadbed soil under circulating humidification effect | |
| CN204461711U (en) | Local ground watering flow field Three Dimensional Dynamic Simulation testing table | |
| CN208505842U (en) | Rock mass discontinuity three-dimensional network grouting test macro | |
| CN204753657U (en) | Steady qualitative experiment device of foundation ditch is strutted to strong lower anchor of rainfall condition of infiltrating | |
| CN112763401B (en) | Rockfill material humidifying deformation test device and method for simulating rainfall infiltration through servo control | |
| CN219417155U (en) | Test device for simulating water evaporation dissipation and rainfall infiltration in roadbed soil | |
| CN204165973U (en) | A kind of novel centrifugal misting rainfall model test unit | |
| CN204679492U (en) | The test unit of a kind of quantitative simulation soil body three axle sample drying and watering cycle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191011 |
|
| RJ01 | Rejection of invention patent application after publication |