CN101912832A - Self-controllable wind-induced rain load simulation experimental device for buildings - Google Patents
Self-controllable wind-induced rain load simulation experimental device for buildings Download PDFInfo
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- CN101912832A CN101912832A CN 201010181834 CN201010181834A CN101912832A CN 101912832 A CN101912832 A CN 101912832A CN 201010181834 CN201010181834 CN 201010181834 CN 201010181834 A CN201010181834 A CN 201010181834A CN 101912832 A CN101912832 A CN 101912832A
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Abstract
A self-controllable wind-induced rain load simulation experimental device for buildings comprises a water storage tank, an alternating current driven water pump and a water separator, wherein the water outlet of the water storage tank is connected with the inlet of the alternating current driven water pump. The device also comprises a spraying system frame, wherein the spraying system frame is provided with spray heads distributed according to arrays; each spray head is connected with a horizontal rotary motor and is connected with a motor output shaft of the horizontal rotary motor; each row of horizontal rotary motor is connected with a cross beam; each cross beam is connected with the spraying system frame in a rotating manner; the spraying system frame is provided with vertical rotary motors with number corresponding to that of the cross beams; the output shaft of each vertical rotary motor is connected with each cross beam; an electromagnetic flow regulating valve is arranged between the alternating current driven water pump and the water separator; the water outlet of the alternating current driven water pump is connected with the inlet of the electromagnetic flow regulating valve; the outlet of the electromagnetic flow regulating valve is connected with the water inlet of the water separator; and each water outlet of the water separator is connected with the water inlet of each spray head.
Description
One, technical field
The present invention relates to a kind of self-controllable wind-induced rain load simulation experimental device for buildings, be used for the situation that the simulant building facade is subjected to the wind-induced rain load effect, belong to building natural environment simulated experiment scrap disassembling technical device field.
Two, background technology
Building in use is subjected to the effect of multiple environmental load, produces material impact for its performance and durability.Wherein, the rain load is a kind of important environmental load that elevation of building bears.The rain load that elevation of building bears can be called as wind-induced rain load, its maximum be characterised in that raindrop should be naturally under the gravity effect, vertically fall, but be subjected to the influence of wind, can incide on the elevation of building with a certain special angle.Because the coupling of wind and gravity, rainfall is drenched on the elevation of building at a certain angle, and this point is the key element of research rain load to Influence on Architecture, also is the characteristics that simulated rainfall must be realized during to Influence on Architecture.And owing to the reasons such as disturbance that raindrop vary in size, wind speed varies in size, distinguished and admirable mistake is subjected to when building, the incident angle of the wind-induced rain load that bears on the elevation of building changes different, and is very complicated.
At present, when studying rainfall, adopt artificially-simulated rainfall device both at home and abroad usually, also visible multiple different rainfall simulator in disclosed patent application to Influence on Architecture.For example, application number is that 200510086874.4 national inventing patent " rainfall simulating jet " discloses a kind of rainfall simulating jet that field trial is used that is beneficial to.Application number be 200910087668.3 national inventing patent " portable artificial rain simulating device " disclose that a kind of rainfall intensity easily regulates portable artificial rain simulating device.Application number is the artificially-simulated rainfall device that 200910021960.5 national inventing patent " a kind of artificially-simulated rainfall device " discloses a kind of Ma Shi of application bottle principle.Although these rainfall simulators differ from one another, all can't simulate wind-induced rain load effectively, promptly can't reproduce the situation that raindrop are incident to elevation of building at a certain angle exactly, say nothing of this incident angle has been controlled automatically.
Therefore, in present existing artificially-simulated rainfall device, still not having can be to wind-induced rain load exist specific incidence angle and incidence angle to have nothing in common with each other device that this substantive characteristics accurately simulates, and the disappearance of this technology is unfavorable for carrying out the experimental study of rainfall to Influence on Architecture.
Three, summary of the invention
The present invention improves a kind of self-controllable wind-induced rain load simulation experimental device for buildings that can truly reflect the suffered rain load of elevation of building, and the present invention can also improve the accuracy of experiment and the reliability of experimental data.
The present invention adopts following technical scheme:
A kind of self-controllable wind-induced rain load simulation experimental device for buildings, comprise: storage tank, alternating current drives water pump and water knockout drum, the delivery port of storage tank is connected with the import that alternating current drives water pump, described analogue experiment installation also comprises the spray system framework, on the spray system framework, be provided with shower nozzle by array distribution, on each shower nozzle, be connected with and horizontally rotate motor, and shower nozzle is connected with the motor output shaft that horizontally rotates motor, horizontally rotate at every row and to connect a crossbeam on the motor respectively, every crossbeam and spray system framework are rotationally connected, also be provided with vertical electric rotating machine with the crossbeam respective numbers at the spray system framework, the output shaft of each vertical electric rotating machine is connected with each crossbeam respectively; Between alternating current driving water pump and water knockout drum, be provided with the Electromagnetic Flow control valve, and the delivery port that alternating current drives water pump is connected with the inlet of Electromagnetic Flow control valve, the outlet of Electromagnetic Flow control valve is connected with the water inlet of water knockout drum, and each delivery port of water knockout drum is connected with the water inlet of each shower nozzle respectively.
The technical problem underlying that the present invention solves and the major function of realization comprise:
1, provide a cover to be used for the device of the wind-induced rain load that the laboratory simulation elevation of building bears;
2, rainfall angle can carry out the automatic control of two dimensions in two planes, the situation on the elevation of building is incided in the effect of raindrop wind-engaging under the natural conditions of having simulated truly at a certain angle;
3, on a cover wind-induced rain load analogue means, the controlled system of spray angle of each row shower nozzle, and can in another vertical plane, carry out independent control again, have nothing in common with each other with the spray angle of each shower nozzle in the delegation, therefore can in two planes, carry out freely changing of two dimensions, thus the different characteristics of wind-induced rain load incident angle that accurately the elevation of building diverse location bears in the rainfall of simulating nature circle;
4, rainfall can be controlled automatically, can simulate the rainfall of different brackets such as light rain, moderate rain, heavy rain, heavy rain;
5, supply channel is provided with scalable flexible pipe, can regulate the distance between spray frame and the test specimen freely, guarantees that the rainfall that sprays out is incident to the test specimen surface with uniform straight line.
The present invention can be accurately, continuously, automatically the spray angle two plane control two dimensions changes, thereby simulated rainfall is incident to the various effects that building surface is produced with specific intensity and angle under wind action, have following advantage:
1, the present invention is located at shower nozzle and horizontally rotates on the motor, to horizontally rotate motor by crossbeam again couples together with vertical electric rotating machine, just can be so that each shower nozzle is when being formed on rotation in the horizontal plane, rotate in vertical guide with the crossbeam under the vertical electric rotating machine effect, thus, each shower nozzle can synthesize moving along any direction, thereby make each shower nozzle can be independently to any direction injection water, the current that sprayed will remove to wash away elevation of building to become any angle with elevation of building, single shower nozzle like this and other numerous shower nozzle or independence or cooperatively interact, simulate the nature scene that it's raining and blowing hard, for example: the present invention can make the 1st row shower nozzle, the 2nd row shower nozzle, the 3rd row shower nozzle, n row shower nozzle order is in chronological sequence rotated and injection water from left to right, so motion, can simulate rainwater well and scrape suddenly under a burst of wind action from left to right that comes, earlier left back right ground drifting type to the right is incident to the situation of elevation of building.This shows, self-movement and each shower nozzle individuality that the present invention can form each shower nozzle individuality interact, make up mutually formed mass motion, these motions make the present invention reflect that truly rainfall forms the natural situation that washes away to elevation of building, thereby can truly reflect the suffered rain load of elevation of building, improve the accuracy of experiment and the reliability of experimental data.Because the polytropism of nature wind direction and polytropy in time, other is simple unidirectionally can not the variant spray system to be difficult to reproduce truly the effect of wind-induced rain load to building, and the present invention has broken through this limitation, can obtain effectively and experimental data that the true nature environment high coincide, thereby make that studying wind-induced rain load by experiment becomes possibility to the effect of building.
2, the electromagnetic flow valve on the supply channel is accepted analog electrical signal control, can regulate rainfall intensity automatically, the rainfall of varying strengths such as simulation light rain, moderate rain, heavy rain, heavy rain;
3, the flexible adjustable flexible pipe is installed on the supply channel, be that spray system provides that the position moves may, can regulate the relative position of itself and test specimen neatly.
Four, description of drawings
Fig. 1 is a result schematic diagram of the present invention; Fig. 2 is the front view of spray system; Fig. 3 is the local structure for amplifying schematic diagram that contains vertical electric rotating machine; Fig. 4 contains the local structure for amplifying front view that horizontally rotates motor; Fig. 5 contains the local structure for amplifying side view that horizontally rotates motor; Fig. 6 contains the local structure for amplifying vertical view that horizontally rotates motor.Each part that marks out among the figure is:
The 1-storage tank
The 2-storage tank supplies water
The draining of 3-storage tank
4-spray system supply channel
The 5-alternating current drives water pump
6-Electromagnetic Flow control valve
7-Electromagnetic Flow control valve analog electrical signal receives terminal
8-flexible adjustable flexible pipe
The 9-water knockout drum
10-shower nozzle water supply hose
11-spray system framework
The vertical electric rotating machine of 12-
The 13-crossbeam
The electric rotating machine analog electrical signal receives terminal
The 14-shower nozzle
The spherical universal wheel of 15-
16-7 vertical electric rotating machine and 35 signal receiving end submodules that horizontally rotate motor
The 17-test specimen
18-horizontally rotates motor
The 19-weld seam
20-sprays water outlet
21-is used for shower nozzle is fixed on the auxiliary member that horizontally rotates on the motor.
Five, the specific embodiment
A kind of self-controllable wind-induced rain load simulation experimental device for buildings, comprise: storage tank 1, alternating current drives water pump 5 and water knockout drum 9, the delivery port of storage tank 1 is connected with the import that alternating current drives water pump 5, it is characterized in that, described analogue experiment installation also comprises spray system framework 11, on spray system framework 11, be provided with shower nozzle 14 by array distribution, on each shower nozzle 14, be connected with and horizontally rotate motor 18, and shower nozzle 14 is connected with the motor output shaft that horizontally rotates motor 18, horizontally rotate at every row and to connect a crossbeam 13 on the motor 18 respectively, every crossbeam 13 is rotationally connected with spray system framework 11, also be provided with vertical electric rotating machine 12 with crossbeam 13 respective numbers at spray system framework 11, the output shaft of each vertical electric rotating machine 12 is connected with each crossbeam 13 respectively; Between alternating current driving water pump 5 and water knockout drum 9, be provided with Electromagnetic Flow control valve 6, and the delivery port that alternating current drives water pump 5 is connected with the inlet of Electromagnetic Flow control valve 6, the outlet of Electromagnetic Flow control valve 6 is connected with the water inlet of water knockout drum 9, and each delivery port of water knockout drum 9 is connected with the water inlet of each shower nozzle 14 respectively.
Below specific embodiments of the present invention is made more detailed description:
The simulated rainfall water is provided by the storage tank of a rectangular shape, and this storage tank has 3 interfaces: the interface of top links to each other with tap water pipe line, and the supply at water source is provided; An interface at the bottom of the case links to each other with drainage pipeline, can when not using for a long time the water in the storage tank not drained; Another interface at the bottom of the case links to each other with supply channel, is used for providing the water source for simulated rainfall.Whole storage tank supports with a metallic support, apart from the ground certain altitude, thinks that the pipeline of bottom provides sufficient installing space.During making, it is 0.5 cubic metre storage tank that available stainless steel material is made a volume, the circular hole that a diameter is 2cm is reserved on storage tank top, in order to link to each other with the domestic water supply system, the circular hole that two diameters are 4cm is reserved in the storage tank bottom, one of them inserts sewer pipe by pipeline, and another links to each other with the spray system supply channel.
Supply channel is that circular galvanized sheet iron pipe is made by cross section, diameter 4cm, and encapsulation process is made in the junction.Storage tank is installed the long vertical pipe of about 30cm down, inserts the supply channel horizontal component by one 90 degree bend pipes.After entering horizontal component, installing one is the water pump of power with the 220V alternating current, for water supply provides driving force.On the pipeline in water pump downstream, an Electromagnetic Flow control valve is installed.This control valve can be accepted 0-10V or 4-20mA direct current analog quantity control signal, and the corresponding control valve full closing state of 0V or 4mA, supply channel stop to supply water for spray system; The corresponding control valve full open of 10V or 20mA state, supply channel are that spray system supplies water with the maximum stream flow.Output is according to the actual rainfall intensity design of nature, and the corresponding heavy rain grade of maximum output is 200mm/h.The electromagnetic flow valve control terminal links to each other with central computer, accepts the computer control signals transmitted, and to regulate output, the maximal regulated frequency is 6 times/minute.
One flexible adjustable flexible pipe is installed on the downstream water supply pipeline of Electromagnetic Flow control valve, can be made by PVC plastics or rubber, this flexible pipe minimum compressed length is 20cm, and maximum tension length can reach 1m, in order to regulate the relative position of spray system and test specimen.
A water knockout drum is installed at the end of supply channel in the flexible pipe downstream, therefrom draws some flexible pipes, in order to link to each other with shower nozzle.The branch water passage quantity that water knockout drum provides is consistent with shower nozzle quantity, as according to system illustrated in figures 1 and 2 manufacturing, then needs 35 the tunnel to divide water tube hose to link to each other with 35 shower nozzles respectively.
The nozzle openings diameter is 3mm, and the water supply hose that the rear portion is told with water knockout drum links to each other, and the top connects auxiliary member and horizontally rotates the fixing welding of motor by one.Horizontally rotate the motor rear portion with the fixing welding of crossbeam, per 5 horizontally rotate motor and evenly are welded on and form 5 shower nozzles of a row on the crossbeam, and beam-ends is connected with a vertical electric rotating machine, this motor and spray frame fixation and weld.Total equally distributed 7 rows, 5 row shower nozzles are totally 35 on the whole spray framework, therefore have 35 to horizontally rotate motor and 7 vertical electric rotating machines, totally 42.These 42 electric rotating machines all can be accepted the 0-10V or the 4-20mA analog quantity signal of telecommunication, to realize the control to the motor anglec of rotation.Wherein, 0V or 4mA corresponding rotation angle are 0 degree; The corresponding vertical anglec of rotation of 10V or 20mA is 180 degree.2 binding posts in the equal junction of all electric rotating machines to be to receive the control signal of telecommunication, can realize that so two dimensions of shower nozzle in two planes freely rotate.By the rotation of two level electric rotating machines, can in two planes, carry out the control of two dimensions, thereby produce the current that incide at a certain angle on the test specimen, the wind-induced rain load of Simulation of Complex shower nozzle.
The spray system framework is made by stainless steel, and the bottom is equipped with 3 spherical rollers, moves with convenient.Frame size is 2.4 meters wide, 3 meters high, and framework is evenly installed 7 circular cross-section crossbeams from top to bottom, and 5 shower nozzles and electric rotating machine are installed on the every crossbeam, has constituted equally distributed array nozzle system, and total quantity is 35.
The device that the present invention proposes provides pressure of supply water by water pump; Realize the adjusting of rainfall by the Electromagnetic Flow control valve that can accept the analog quantity control signal; By electric rotating machines vertical and two levels of level are realized the two dimensions control of shower nozzle spray angle in two planes; Adjust the relative position of spray system and test specimen by the flexible adjustable flexible pipe.Electromagnetic Flow control valve and electric rotating machine all receive the control signal that transmits by central computer or automatic controller, control signal can be worked out into control documents in advance according to the true nature condition, thus realize to wind-induced rain load truly, continuously, accurately simulation.
Claims (1)
1. self-controllable wind-induced rain load simulation experimental device for buildings, comprise: storage tank (1), alternating current drives water pump (5) and water knockout drum (9), the delivery port of storage tank (1) is connected with the import that alternating current drives water pump (5), it is characterized in that, described analogue experiment installation also comprises spray system framework (11), on spray system framework (11), be provided with shower nozzle (14) by array distribution, on each shower nozzle (14), be connected with and horizontally rotate motor (18), and shower nozzle (14) is connected with the motor output shaft that horizontally rotates motor (18), horizontally rotate at every row and to connect a crossbeam (13) on the motor (18) respectively, every crossbeam (13) is rotationally connected with spray system framework (11), also be provided with vertical electric rotating machine (12) with crossbeam (13) respective numbers at spray system framework (11), the output shaft of each vertical electric rotating machine (12) is connected with each crossbeam (13) respectively; Between alternating current driving water pump (5) and water knockout drum (9), be provided with Electromagnetic Flow control valve (6), and the delivery port that alternating current drives water pump (5) is connected with the inlet of Electromagnetic Flow control valve (6), the outlet of Electromagnetic Flow control valve (6) is connected with the water inlet of water knockout drum (9), and each delivery port of water knockout drum (9) is connected with the water inlet of each shower nozzle (14) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101818349A CN101912832B (en) | 2010-05-25 | 2010-05-25 | Self-controllable wind-induced rain load simulation experimental device for buildings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101818349A CN101912832B (en) | 2010-05-25 | 2010-05-25 | Self-controllable wind-induced rain load simulation experimental device for buildings |
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| CN101912832A true CN101912832A (en) | 2010-12-15 |
| CN101912832B CN101912832B (en) | 2012-06-13 |
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| CN2010101818349A Expired - Fee Related CN101912832B (en) | 2010-05-25 | 2010-05-25 | Self-controllable wind-induced rain load simulation experimental device for buildings |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394428A (en) * | 2013-07-29 | 2013-11-20 | 南方电网科学研究院有限责任公司 | Automatic pollutant spraying device for long strings of composite insulators |
| CN103771144A (en) * | 2014-01-23 | 2014-05-07 | 南通剑桥输送设备有限公司 | Precisely adjusted pneumatic transmission device |
| CN104977432A (en) * | 2014-04-11 | 2015-10-14 | 南方电网科学研究院有限责任公司 | Water spray apparatus for long-string insulator wet operation impact test, and application thereof |
| CN105797898A (en) * | 2016-06-01 | 2016-07-27 | 王保锋 | Paint spraying device for ironwork surface layers |
| CN105926692A (en) * | 2016-06-27 | 2016-09-07 | 重庆交通大学 | Raining simulation device for slope washing test |
| CN106290127A (en) * | 2016-07-31 | 2017-01-04 | 唐静 | The rainfall simulator of simulation laboratory test is washed away for roadbed side slope |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289611Y (en) * | 1997-01-27 | 1998-09-02 | 林映津 | High-efficient automatic omnibearing spray device |
| CN1560820A (en) * | 2004-03-08 | 2005-01-05 | 中国科学院力学研究所 | Rainfall analogue device for laboratary |
| EP1585603A1 (en) * | 2002-12-16 | 2005-10-19 | Spraying Systems Co. | Spraying system with automated nozzle cleaning device |
| CN2751898Y (en) * | 2004-12-17 | 2006-01-18 | 北京交通大学 | Spray nozzle swinging mechanism for artificial analog rainfall apparatus |
| WO2007074455A2 (en) * | 2005-12-29 | 2007-07-05 | Men At Work Ltd. | Boresighting system and method |
| CN201269909Y (en) * | 2008-10-24 | 2009-07-08 | 中国电力科学研究院 | Simulated rainfall and fog-fall system for corona cage |
| CN201949961U (en) * | 2010-05-25 | 2011-08-31 | 东南大学 | Self-controlled wind and rain load simulation experimental apparatus for buildings |
-
2010
- 2010-05-25 CN CN2010101818349A patent/CN101912832B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289611Y (en) * | 1997-01-27 | 1998-09-02 | 林映津 | High-efficient automatic omnibearing spray device |
| EP1585603A1 (en) * | 2002-12-16 | 2005-10-19 | Spraying Systems Co. | Spraying system with automated nozzle cleaning device |
| CN1560820A (en) * | 2004-03-08 | 2005-01-05 | 中国科学院力学研究所 | Rainfall analogue device for laboratary |
| CN2751898Y (en) * | 2004-12-17 | 2006-01-18 | 北京交通大学 | Spray nozzle swinging mechanism for artificial analog rainfall apparatus |
| WO2007074455A2 (en) * | 2005-12-29 | 2007-07-05 | Men At Work Ltd. | Boresighting system and method |
| CN201269909Y (en) * | 2008-10-24 | 2009-07-08 | 中国电力科学研究院 | Simulated rainfall and fog-fall system for corona cage |
| CN201949961U (en) * | 2010-05-25 | 2011-08-31 | 东南大学 | Self-controlled wind and rain load simulation experimental apparatus for buildings |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394428A (en) * | 2013-07-29 | 2013-11-20 | 南方电网科学研究院有限责任公司 | Automatic pollutant spraying device for long strings of composite insulators |
| CN103771144A (en) * | 2014-01-23 | 2014-05-07 | 南通剑桥输送设备有限公司 | Precisely adjusted pneumatic transmission device |
| CN104977432A (en) * | 2014-04-11 | 2015-10-14 | 南方电网科学研究院有限责任公司 | Water spray apparatus for long-string insulator wet operation impact test, and application thereof |
| CN104977432B (en) * | 2014-04-11 | 2019-09-20 | 南方电网科学研究院有限责任公司 | Long-string insulator wet practice impact test water injector and its application |
| CN105797898A (en) * | 2016-06-01 | 2016-07-27 | 王保锋 | Paint spraying device for ironwork surface layers |
| CN105926692A (en) * | 2016-06-27 | 2016-09-07 | 重庆交通大学 | Raining simulation device for slope washing test |
| CN106290127A (en) * | 2016-07-31 | 2017-01-04 | 唐静 | The rainfall simulator of simulation laboratory test is washed away for roadbed side slope |
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| Publication number | Publication date |
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| CN101912832B (en) | 2012-06-13 |
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