CN102121846B - Method and device for testing vibration effect of multi-combination hydraulic long pipeline system - Google Patents

Method and device for testing vibration effect of multi-combination hydraulic long pipeline system Download PDF

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Publication number
CN102121846B
CN102121846B CN2010105647429A CN201010564742A CN102121846B CN 102121846 B CN102121846 B CN 102121846B CN 2010105647429 A CN2010105647429 A CN 2010105647429A CN 201010564742 A CN201010564742 A CN 201010564742A CN 102121846 B CN102121846 B CN 102121846B
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pipeline
valve
communicated
input end
output terminal
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CN102121846A (en
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谢敬华
何利
李建平
夏毅敏
田科
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Central South University
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Central South University
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Abstract

The invention discloses a method and device for testing the vibration effect of a multi-combination hydraulic long pipeline system for a hydraulic system. The device comprises a fluid supply pump station, a hydraulic pipeline system and a test system, wherein in the hydraulic pipeline system, long pipelines are distributed in a space serpentine way, the middle parts of the hydraulic pipeline system are supported by detachable brackets and the switching of long and short pipelines are realized depending on electromagnetic change valves; an accessing pipeline is assembled from a high-pressure rubber pipe, a short straight pipeline, a long straight single-span pipeline, a long straight multi-span pipeline and a U-shaped pipeline; and the test system comprises pressure sensors, flowmeters, a three-way acceleration sensor, a mode analyzer and analysis software thereof.

Description

A kind of many assembled hydraulics long tube is yo-yo effect method of testing and device
1. affiliated technical field
The present invention relates to the defeated stream of a kind of many assembled hydraulics long tube is yo-yo effect method of testing and device, is applied to the conduit under fluid pressure transmission field.
2. background technology
Conduit under fluid pressure is one of indispensable element of hydraulic system, plays to connect and transfer function.Pipe vibration can make the connecting portion of pipeline take place loosening or pipeline breaks, and gently then causes leakage, and is heavy then can lead to major accident because of the grade of exploding.Analysis of Pipe Vibrations can influence flowing of pipeline inner fluid conversely again, and transition fluidised form, fluctuation and the pipe vibration that forms fluid is the solid coupled system of the stream of one.The concrete mixer that present domestic engineering field is used morely, shield excavation machine etc., the distance of its hydraulic actuating mechanism and hydraulic power source is far away, and conduit under fluid pressure length can reach tens meters even rice up to a hundred.Therefore, the long pipeline system can not be ignored the influence that equipment set causes.
At present, ripe both at home and abroad for the single type pipeline like the testing equipment of cantalever tube, freely-supported straight tube, but also do not set up for the pilot system that can simulate multiple conduit types combination.Therefore the experimental provision that designs the multiple conduit under fluid pressure that a cover can the real simulation practical applications is the subject matter of research conduit under fluid pressure effect.According to the most typical pipeline configuration in the practical applications; Design a cover form and can adjust the pipeline array configuration flexibly; Test unit like the combination of the combination of combination, bend pipe and the straight tube of soft or hard pipe, shape tube combination, different-diameter pipeline etc. disposes rational sensor, data acquisition system (DAS) and vibration analysis system.Set up the mutual relationship between laboratory study and the practical applications; For engineering safety provides more true and reliable laboratory study data; Simultaneously also for the topological design of conduit under fluid pressure, pipeline vibration damping provide science, test parameters accurately, thereby realization is to the simulation and the emulation of conduit under fluid pressure practical application performance.
3. summary of the invention
The objective of the invention is to present technical merit and present Research; Design one cover can the real simulation practical applications the experimental provision of multiple conduit under fluid pressure study the conduit under fluid pressure effect, it is yo-yo effect method of testing and device that the defeated stream of a kind of many assembled hydraulics long tube is provided.
The technical scheme that the present invention adopts is: the defeated stream of a kind of many assembled hydraulics long tube is yo-yo effect method of testing and device, comprises feed flow pumping plant, high-pressure hose, first turbo flow meter, tee pipe coupling, column support, first pipeline, second pipeline, the 3rd pipeline, the 4th pipeline, the 5th pipeline, first valve, second valve, the 3rd valve, stop valve, tee pipe coupling, second turbo flow meter, detachable pipe clamp, ground level crossbeam, pressure transducer, acceleration transducer and supervisory system.Its characteristic also is: feed flow pumping plant oil-out is communicated with the high-pressure hose input end; The high-pressure hose output terminal is communicated with the tee pipe coupling input end; First turbo flow meter is communicated with the tee pipe coupling intermediate head; The first pipeline input end is communicated with the tee pipe coupling output terminal; The output terminal of first pipeline is communicated with the oil inlet P of first valve; The input end of second pipeline is communicated with the oil return inlet T of first valve; The output terminal of second pipeline is communicated with the oil inlet P of second valve; The input end of the 3rd pipeline is communicated with the oil return inlet T of second valve; The output terminal of the 3rd pipeline is communicated with the oil inlet P of the 3rd valve; The input end of the 4th pipeline is communicated with the oil return inlet T of the 3rd valve; The output terminal of the 4th pipeline is communicated with the stop valve oil inlet P; The oil-out A of first valve, second valve, the 3rd valve and stop valve is communicated with the 5th pipeline input end respectively; The 5th pipeline output terminal is communicated with the tee pipe coupling input end; Second turbo flow meter is communicated with the tee pipe coupling intermediate head; Every on first pipeline at a distance from pressure transducer of 2m layout; Second pipeline and the 3rd pipe bending radius are the U type pipeline place of 200mm, and a pressure transducer is installed at two ends respectively; Every on second pipeline, the 3rd pipeline and the 4th pipeline at a distance from pressure transducer of 4m layout; All pipelines and annex thereof rely on column support and intermediate column and weld superincumbent pipe clamp fixed support; Detachable pipe clamp is installed in the intermediate column position; Column support and intermediate column are through being bolted on two ground level crossbeams; The ground level crossbeam is fixed through foot bolt and ground, and first valve, second valve, the 3rd valve are the two-bit triplet solenoid directional control valve.The whole series pipeline mechanism adopts space snake type mode to arrange, guarantees in limited space, to accomplish the layout of long pipeline.
Vibration test system comprises pressure transducer, three-dimensional acceleration transducer, data acquisition equipment, data-carrier store, DAS, model analysis appearance, model analysis software and monitor screen; Wherein, the pressure transducer equidistance is installed, and the three-dimensional acceleration transducer sticks on pipeline test point place with beeswax or glue, can choose corresponding test point according to different test requests; The pressure transducer of arranging on the piping system is input to data acquisition equipment with the current signal of 4-20mA; Data acquisition equipment is presented at real time data on the monitoring screen on the one hand; In addition on the one hand with data transmission to data-carrier store; And carry out data analysis and processing through DAS, with the result transmission after handling to monitor screen; The three-dimensional acceleration transducer transfers to the model analysis appearance with test data, and the model analysis software in the model analysis appearance is handled data, obtains the vibration characteristics of piping system and accomplishes model analysis.
On the basis of technique scheme, the further technical scheme with additional technical feature is: a whole set of long pipeline experimental provision, adopt space snake type mode arranged, and compact in design, the occupation of land scope is little; Can realize the combination of multiple conduit types; Pipeline in the whole tubing device can be dismantled flexibly, replace, and extensibility is strong; System is controlled by PLC, not only can realize the switching of long and short pipeline automatically, and can monitor the variation of each channel transmission signal in real time; Data are obtained, preserve, are shown and control, and develop corresponding watchdog routine through configuration software and realize.
The favourable benefit that the present invention has:
1) the present invention has been owing to adopted layout of beam line mode flexibly, like the combination of the combination of combination, bend pipe and the straight tube of soft or hard pipe, shape tube combination, different-diameter pipeline etc., can adjust the pipeline array configuration according to experiment needs;
2) through adjusting solid number, propping up spacing admittedly, the research effects of conduit vibration is found out the arrangement of mechanism method of reasonably propping up admittedly;
3) adopt multiple high-precision sensor, advanced industrial control equipment and intelligentized Control Software, can gather, preserve, show and control test figure exactly.
4) through adjusting the effects of conduit vibration that feed flow pumping plant and duct test parameter can be studied under the different operating modes, different pipelines makes up.
This many assembled hydraulics long pipeline system vibration effect test method and device have the function that a set of tubes system and device is used more, thereby have remedied the deficiency of single pipeline experimental provision, the operating position of real simulation practical applications field conduit under fluid pressure.Through measured test figure is analyzed, draw science, the embodiment of pipe design layout and vibration damping accurately.
Description of drawings
Fig. 1 is many assembled hydraulics of the present invention long pipeline structural representation
Fig. 2 is that many assembled hydraulics of the present invention long pipeline is installed the column support structure principle chart
Fig. 3 is the first pipeline sensor schematic layout pattern of the present invention
Fig. 4 is a test macro synoptic diagram of the present invention
Embodiment
Shown in accompanying drawing 1; The present invention includes: feed flow pumping plant (1), high-pressure hose (2), first turbo flow meter (3), tee pipe coupling (4), column support (8) (9) (10) (11) (12), first pipeline (20), second pipeline (5), the 3rd pipeline (6), the 4th pipeline (7), the 5th pipeline (14), first valve (19), second valve (16), the 3rd valve (15), stop valve (13), tee pipe coupling (18), second turbo flow meter (17), detachable pipe clamp, ground level crossbeam, pressure transducer, acceleration transducer and supervisory system, its characteristic also is: feed flow pumping plant (1) oil-out is communicated with high-pressure hose (2) input end; High-pressure hose (2) output terminal is communicated with tee pipe coupling (4) input end; First turbo flow meter (3) is communicated with tee pipe coupling (4) intermediate head; First pipeline (20) input end is communicated with the output terminal of tee pipe coupling (4); The output terminal of first pipeline (20) is communicated with the oil inlet P of first valve (19); The input end of second pipeline (5) is communicated with the oil return inlet T of first valve (19); The output terminal of second pipeline (5) is communicated with the oil inlet P of second valve (16); The input end of the 3rd pipeline (6) is communicated with the oil return inlet T of second valve (16); The output terminal of the 3rd pipeline (6) is communicated with the oil inlet P of the 3rd valve (15); The input end of the 4th pipeline (7) is communicated with the oil return inlet T of the 3rd valve (15); The output terminal of the 4th pipeline (7) is communicated with stop valve (13) oil inlet P; The oil-out A of first valve (15), second valve (16), the 3rd valve (19) and stop valve (13) is communicated with the 5th pipeline (14) input end respectively; The 5th pipeline (14) output terminal is communicated with tee pipe coupling (18) input end; Second turbo flow meter (17) is communicated with tee pipe coupling (18) intermediate head; First pipeline (20) is gone up every at a distance from pressure transducer of 2m layout; Second pipeline (5) and the 3rd pipeline (6) bending radius are the U type pipeline place of 200mm, and a pressure transducer is installed at two ends respectively; Second pipeline (5), the 3rd pipeline (6) and the 4th pipeline (7) are gone up every at a distance from pressure transducer of 4m layout; All pipelines and annex thereof rely on column support (8), (12) and intermediate column (9), (10), (11) and weld superincumbent pipe clamp fixed support; Detachable pipe clamp is installed in intermediate column (9), (10), (11) position; Column support (8), (12) and intermediate column (9), (10), (11) are through being bolted on two ground level crossbeams; The ground level crossbeam is fixed through foot bolt and ground, and first valve (15), second valve (16), the 3rd valve (19) are the two-bit triplet solenoid directional control valve, and a whole set of pipeline mechanism adopts space snake type mode to arrange.When stop valve was closed, when having only first valve 1YA when energising, being connected into duct length was 9m, when 1YA, 2YA simultaneously when electric, being connected into duct length is 27m, when 1YA, 2YA, 3YA simultaneously when electric, being connected into duct length is 54m; When stop valve open and also 1YA, 2YA, 3YA simultaneously when electric, being connected into duct length is 63m, realizes the switching of long and short pipeline; Every pipeline in the whole tubing device all can be dismantled flexibly, replaces to user required other conduit types and length.The pressure transducer equidistance is installed, and the three-dimensional acceleration transducer sticks on pipeline test point place with beeswax or glue, can choose corresponding test point according to different test requests; The pressure transducer of arranging on the piping system is input to data acquisition equipment with the current signal of 4-20mA; Data acquisition equipment is presented at real time data on the monitoring screen on the one hand; In addition on the one hand with data transmission to data-carrier store; And carry out data analysis and processing through DAS, with the result transmission after handling to monitor screen; The three-dimensional acceleration transducer transfers to the model analysis appearance with test data, and the model analysis software in the model analysis appearance is handled data, obtains the vibration characteristics of piping system and accomplishes model analysis.

Claims (5)

1. assembled hydraulic more than a kind is failed stream long tube system vibration effect proving installation; Comprise: feed flow pumping plant (1), high-pressure hose (2), first turbo flow meter (3), first tee pipe coupling (4), column support (8,12) and intermediate column (9,10,11), first pipeline (20), second pipeline (5), the 3rd pipeline (6), the 4th pipeline (7), the 5th pipeline (14), first valve (19), second valve (16), the 3rd valve (15), stop valve (13), second tee pipe coupling (18), second turbo flow meter (17), detachable pipe clamp, ground level crossbeam, pressure transducer, acceleration transducer and supervisory system, its characteristic also is: feed flow pumping plant (1) oil-out is communicated with high-pressure hose (2) input end; High-pressure hose (2) output terminal is communicated with first tee pipe coupling (4) input end; First turbo flow meter (3) is communicated with first tee pipe coupling (4) intermediate head; First pipeline (20) input end is communicated with the output terminal of first tee pipe coupling (4); The output terminal of first pipeline (20) is communicated with the oil inlet P of first valve (19); The input end of second pipeline (5) is communicated with the oil return inlet T of first valve (19); The output terminal of second pipeline (5) is communicated with the oil inlet P of second valve (16); The input end of the 3rd pipeline (6) is communicated with the oil return inlet T of second valve (16); The output terminal of the 3rd pipeline (6) is communicated with the oil inlet P of the 3rd valve (15); The input end of the 4th pipeline (7) is communicated with the oil return inlet T of the 3rd valve (15); The output terminal of the 4th pipeline (7) is communicated with stop valve (13) oil inlet P; The oil-out A of first valve (15), second valve (16), the 3rd valve (19) and stop valve (13) is communicated with the 5th pipeline (14) input end respectively; The 5th pipeline (14) output terminal is communicated with second tee pipe coupling (18) input end; Second turbo flow meter (17) is communicated with second tee pipe coupling (18) intermediate head; First pipeline (20) is gone up every at a distance from pressure transducer of 2m layout; Second pipeline (5) and the 3rd pipeline (6) bending radius are the U type pipeline place of 200mm, and a pressure transducer is installed at two ends respectively; Second pipeline (5), the 3rd pipeline (6) and the 4th pipeline (7) are gone up every at a distance from pressure transducer of 4m layout; All pipelines and annex thereof rely on column support (8,12) and intermediate column (9,10,11) and weld superincumbent pipe clamp fixed support; Detachable pipe clamp is installed in intermediate column (9,10,11) position; Column support (8,12) and intermediate column (9,10,11) are through being bolted on two ground level crossbeams; The ground level crossbeam is fixed through foot bolt and ground, and first valve (15), second valve (16), the 3rd valve (19) are the two-bit triplet solenoid directional control valve, and a whole set of pipeline mechanism adopts space snake type mode to arrange, guarantees in limited space, to accomplish the layout of long pipeline.
2. the defeated stream of a kind of many assembled hydraulics according to claim 1 long tube system vibration effect proving installation; It is characterized in that: the pipe clamp that is installed on the intermediate column is detachable; Intermediate column can whole translation; Thereby, find out the arrangement of mechanism method of reasonably propping up admittedly through adjusting solid number, propping up spacing research effects of conduit vibration admittedly.
3. the defeated stream of a kind of many assembled hydraulics according to claim 1 long tube system vibration effect proving installation; It is characterized in that: adopted layout of beam line mode flexibly; The pipeline array configuration can be adjusted, and realizes that the combination of combination, bend pipe and the straight tube of soft or hard pipe, shape tube make up, the combination of different-diameter pipeline.
4. the defeated stream of a kind of many assembled hydraulics according to claim 1 long tube system vibration effect proving installation; It is characterized in that: go up setting pressure sensor (38-41) at first pipeline (20); Three-dimensional acceleration transducer (21-37) sticks on the tube wall with beeswax or glue, can choose corresponding test point according to different test requests.
5. the defeated stream of a kind of many assembled hydraulics according to claim 1 long tube system vibration effect proving installation; It is characterized in that: the pressure transducer (38-42) that first pipeline (20) is upward arranged is input to data acquisition equipment (43) with the current signal of 4-20mA; Data acquisition equipment (43) is presented at real time data on the monitoring screen (44) on the one hand; In addition on the one hand with data transmission to data-carrier store (45); And carry out data analysis and processing through DAS (46), the result (47) after handling is transferred on the monitor screen (44); Three-dimensional acceleration transducer (21,37) transfers to model analysis appearance (48) with test data, and the model analysis software (49) in the model analysis appearance (48) is handled data, obtains the vibration characteristics of piping system and accomplishes model analysis.
CN2010105647429A 2010-11-30 2010-11-30 Method and device for testing vibration effect of multi-combination hydraulic long pipeline system Expired - Fee Related CN102121846B (en)

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CN106018561B (en) * 2016-05-13 2018-11-20 中国石油大学(华东) The measuring system and method for magnitudes of acoustic waves attenuation coefficient in different pipeline configurations
CN110194282B (en) * 2019-06-19 2022-11-04 中南大学 Airplane wheel brake vibration testing method applying vibration measurement technology
CN112525461A (en) * 2020-07-06 2021-03-19 东北大学 Vibration test bed of multiform clamp pipe test system and frequency response test method thereof
CN112504592A (en) * 2020-11-19 2021-03-16 中国民航大学 Hydraulic pipeline vibration test stand

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