CN107255676A - Pipeline exciting pigging experimental rig and method based on frequency sweep - Google Patents
Pipeline exciting pigging experimental rig and method based on frequency sweep Download PDFInfo
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- CN107255676A CN107255676A CN201710560704.8A CN201710560704A CN107255676A CN 107255676 A CN107255676 A CN 107255676A CN 201710560704 A CN201710560704 A CN 201710560704A CN 107255676 A CN107255676 A CN 107255676A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2291/014—Resonance or resonant frequency
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Abstract
The invention discloses a kind of pipeline exciting pigging experimental rig based on frequency sweep and method, the device includes：Wiper and the vibration detection cabin connected by linkwork, wiper have hollow skeleton, and the two ends of skeleton are respectively arranged with support leather cup and the first end cap, and the first end, which is covered, is provided with least one passway connected with skeletal internal；Skeleton is internally provided with turbodynamo；Vibration detection cabin, which has, to be provided with data acquisition equipment in vibration cabin housing, vibration cabin housing and rigidly connected mode is provided with sine sweep exciting agency, and sine sweep exciting agency includes：Sine excitation equipment and the mass for adjusting exciting force；The two ends of vibration cabin housing set the second end cap respectively, and mileage wheel is additionally provided with the second end cap away from wiper.Pipeline exciting pigging experimental rig based on frequency sweep and method that the present invention is provided, can advance with pressurized fluid, identify the hanging section of pipeline.
Description
Technical field
The present invention relates to the hanging detection technique field of oil-gas pipeline, more particularly to a kind of pipeline exciting pigging based on frequency sweep
Experimental rig and method.
Background technology
At present, natural gas line laying mileage is increasingly longer, and by the end of the end of the year 2016, it is public that China has laid 12.6 ten thousand
In natural gas line.Because pipe laying distance is longer, complex environment location may be passed through.Accumulation over time,
Some hanging situations occur in some pipeline sections unavoidably.It is one huge for pipeline when the big hanging situation of section occurs in pipeline
Potential safety hazard, because pipeline is directly exposed in the environment exposed to the weather and drenched with rain, can drawn departing from the protection for around wrapping up soil
Carry out other natural calamities such as some artificial destructions and corrosion, so that unnecessary security incident can be caused.Accident is once occurring
Heavy economic losses can be brought to enterprise and country.In order to ensure security that natural gas line uses, it is necessary to be carried out to pipeline
Regular annual test.
At present to the detection technique of pipeline using it is more be shallow bottom cross-section techniques, single multi- wave beam optical fiber sensing technology
Deng some photoelectric sense technologies.Though above-mentioned detection technique, which can identify a certain region pipeline, whether there is hanging section, there is also
Many shortcomings, such as：Cost is higher, inefficiency, and testing process is complicated to be set, it is necessary to individually lay supporting auxiliary detection
It is standby, more manpower and materials are needed in detection process.Particularly；Taken because current existing detection technique is substantially all in pipe
The mode detected outside road, due to the difference of differently segment pipe local environment, some areas are likely located at mountain area, mound
Express zone such as mound, valley bog or obstruction can not carry out detection caused by some building foundation facilities etc..
Therefore, it is necessary to propose a kind of hanging detection technique of new pipeline, the limitation of existing detection technique can be overcome.
The content of the invention
It is an object of the invention to provide a kind of pipeline exciting pigging experimental rig based on frequency sweep and method, routine is overcome
The limitation of pipe detection, can advance under the technique of pipeline on-line production with pressurized fluid, by actively exciting sine sweep to believe
Number realization is detected in real time to pipeline, identifies hanging section.
The above-mentioned purpose of the present invention can be realized using following technical proposal：
A kind of pipeline exciting pigging experimental rig based on frequency sweep, it can be arranged in pipeline, and it includes：
Wiper and the vibration detection cabin connected by linkwork, wherein,
The wiper has hollow skeleton, and the two ends of the skeleton are respectively arranged with support leather cup and the first end cap,
The first end, which is covered, is provided with least one passway connected with the skeletal internal；The skeleton is internally provided with whirlpool
Flow generator；
The vibration detection cabin, which has, to be provided with data acquisition equipment in vibration cabin housing, vibration cabin housing and passes through
Rigidly connected mode is provided with sine sweep exciting agency, wherein, the sine sweep exciting agency includes：Sine excitation is set
It is standby and for adjusting the mass of exciting force；The two ends of vibration cabin housing set the second end cap respectively, away from described clear
Mileage wheel is additionally provided with second end cap of pipe device.
In one preferred embodiment, in addition to for by the sine sweep exciting agency and vibration cabin shell
Base and fixation clip, the sine excitation equipment are laid in the rigidly connected support frame of body, being internally provided with for support frame as described above
It is arranged between the placement base and fixation clip；Perforate is provided with the fixation clip；One end of the mass is set
Put in the perforate on the fixation clip.
In one preferred embodiment, the vibration detection cabin is in integrally hollow cylindrical type, and support frame as described above is whole
Body is also into hollow cylinder, and support frame as described above is fixedly connected by way of interference fit.
In one preferred embodiment, vibration cabin housing is set respectively in the periphery close to second end cap
There are multiple circumferentially equally distributed rigid support legs.
In one preferred embodiment, the data acquisition equipment includes：Data acquisition element and data processing cabin；
Wherein, the data acquisition element is 3-axis acceleration sensor.
In one preferred embodiment, the mileage wheel set on second end cap includes symmetrical above and below two,
Two mileage wheels symmetrical above and below constitute location positioning system, and the location positioning system also includes：Support arm, compression spring and
Mounting seat；Wherein,
The mounting seat is fixed on second end cap；
One end of the compression spring is fixed in the mounting seat, and the other end is fixed on the support arm；
The support arm is arranged on by way of being hinged in the mounting seat, and its one end is consolidated with the compression spring
Fixed, the other end is used to set the mileage wheel.
A kind of pipeline exciting pigging test method based on frequency sweep, including：
Initial debugging, including：Installation and debugging wiper and vibration detection cabin, are tightly connected all parts；Flow valve is set
Initial flow is set, to transmission speed data after mileage wheel zeros data and startup, the transmission effect of mileage wheel and wiper is checked
Rate；
Exciting below deck equipment normal operational parameters are set, including：Speed, frequency sweep segment and the excitation of sine excitation equipment
Power width, sends enabling signal, starts excitational equipment and sends pumping signal；Regulate signal acquisition elements sampling rate, sends initial
Signal, sets sampling rate；
When the pipeline exciting pigging experimental rig based on frequency sweep, which is located at, to be detected in pressurized fluid pipeline, pass through
Sine excitation equipment in vibration detection cabin actively produces sinusoidal excitation signal, and the signal is passed by support frame, vibration cabin housing
Inner-walls of duct is delivered to, response signal is passed back to signal collecting element, Ran Houtong by inner-walls of duct by rigidity vibration cabin supporting leg
Cross data acquisition equipment and carry out data acquisition and storage；
Data acquisition equipment is total to according to collection and the signal extraction first order resonance frequency information stored, and according to the single order
Vibration frequency situation of change determines to whether there is hanging section in pipeline.
A kind of pipeline exciting pigging test method based on frequency sweep, including：
Launch sine sweep accumulation signal；
The vibrational feedback signal of pipeline is gathered in real time；
The data processing of time domain and frequency domain is carried out to the vibrational feedback signal collected, diverse location response is obtained
Difference；
Whether the pipeline of the difference identification pre-position responded according to the diverse location is in hanging section.
The features and advantages of the invention are：The pipeline exciting based on frequency sweep that can be arranged in pipeline that the application is provided
Pigging experimental rig, the wiper of setting and vibration detection cabin are connected using front and back stages, with the vortex inside the wiper of front end
Electrical power generators provide power supply.During detection, sine sweep is actively produced using the sine sweep exciting agency in vibration detection cabin
Pumping signal, accordingly, the response data of data acquisition equipment collection in real time and processing pipeline in the vibration detection cabin, and
, can the pipeline vibratory response situation analysis in the case where time domain and frequency domain are to varying environment situation respectively with reference to the location data of mileage wheel
Judge to support situation around pipeline, integrate and determined on the pipeline in precalculated position in particular according to first order resonance frequency situation of change
With the presence or absence of hanging section.On the whole the pipeline exciting pigging experimental rig can in pipeline under the operating mode of on-line production with band
Pressure fluid, which advances, detects whether pipeline hanging section occurs.
With reference to explanation hereinafter and accompanying drawing, the particular implementation of the application is disclose in detail, the original of the application is specified
Reason can be in adopted mode.It should be understood that presently filed embodiment is not so limited in scope.In appended power
In the range of the spirit and terms that profit is required, presently filed embodiment includes many changes, modifications and equivalent.
The feature for describing and/or showing for a kind of embodiment can be in same or similar mode one or more
Used in individual other embodiment, it is combined with feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Fig. 1 is a kind of pipeline exciting pigging experimental rig entirety sectional view based on frequency sweep in the application embodiment；
Fig. 2 is a kind of knot in the pipeline exciting pigging experimental rig vibration detection cabin based on frequency sweep in the application embodiment
Structure schematic diagram；
Fig. 3 is that a kind of structure of the pipeline exciting pigging experimental rig support frame based on frequency sweep is shown in the application embodiment
It is intended to；
Fig. 4 is a kind of structure of the pipeline exciting pigging experimental rig fixation clip based on frequency sweep in the application embodiment
Schematic diagram；
Fig. 5 is a kind of first order resonance frequency amplitude variation diagram in the application embodiment.
Description of reference numerals：
Wiper -9；Skeleton -97；Support leather cup -91；Shading ring -95；First end cap -96；Passway -961；Floor-
92；Hex bolts -94；Nut -941；Flow valve -93；Turbodynamo -10；Pipeline -6；Connector -7；Hook -71；Vibration
Detect cabin -2；Vibrate cabin housing -23；Second end cap -22；Rigid support leg -21；Sine excitation equipment -3；Mass -31；Branch
Support -34；Lay base -32；Fixation clip -33；Data processing cabin -4；Data acquisition element -41；Power supply -5；Connecting tube -8；
Wire -81；Mileage wheel -1；Compression spring -11；Support arm -12；Mounting seat -13.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme is elaborated, it should be understood that these
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention, after the present invention has been read, this area skill
Modification of the art personnel to the various equivalent form of values of the present invention is each fallen within the application appended claims limited range.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " on ",
" under ", "left", "right" and similar statement for illustrative purposes only, it is unique embodiment to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field of the application is belonged to
The implication that technical staff is generally understood that is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
The arbitrary and all combination of related Listed Items.
The present invention provides a kind of pipeline exciting pigging experimental rig and method based on frequency sweep, overcomes conventional pipeline detection
Limitation, can advance under the technique of pipeline on-line production with pressurized fluid, by actively excite sine sweep signal realize pair
Pipeline is detected in real time, identifies hanging section.
Refer to and a kind of pipeline exciting pigging experiment dress based on frequency sweep is provided in Fig. 1 to Fig. 2, the application embodiment
Put, the pipeline exciting pigging experimental rig based on frequency sweep can be arranged in pipeline 6.The pipeline exciting pigging based on frequency sweep
Experimental rig can include：Wiper 9 and the vibration detection cabin 2 connected by linkwork, wherein, the wiper 9 has
Hollow skeleton 97, the two ends of the skeleton 97 are respectively arranged with the support end cap 96 of leather cup 91 and first, first end cap 96
On be provided with least one passway 961 connected with the inside of the skeleton 97；The vortex that is internally provided with of the skeleton 97 is sent out
Motor 10；The vibration detection cabin 2 has vibration cabin housing 23, be provided with vibration cabin housing 23 data acquisition equipment and
Sine sweep exciting agency is provided with by rigidly connected mode, wherein, the sine sweep exciting agency includes：Sine swashs
Equipment of shaking 3 and the mass 31 for adjusting exciting force；The two ends of vibration cabin housing 23 set the second end cap 22 respectively,
Mileage wheel 1 is additionally provided with the second end cap 22 away from the wiper 9.
The experiment dress of the pipeline exciting pigging based on frequency sweep that can be arranged in pipeline 6 provided in the application embodiment
Put, the wiper 9 of setting and vibration detection cabin 2 are connected using front and back stages, with the turbodynamo 10 inside front end wiper 9
Generate electricity and power supply is provided.During detection, sine is applied to the inwall of pipeline 6 using the sine sweep exciting agency in vibration detection cabin 2 and swept
Frequency is encouraged, accordingly, the number of responses that the collection in real time of the data acquisition equipment in the vibration detection cabin 2 and processing pipeline 6 are returned
According to, and the location data of mileage wheel 1 is combined, can the vibratory response of pipeline 6 in the case where time domain and frequency domain are to varying environment situation respectively
Situation analysis judges to support situation around pipeline, is integrated in particular according to first order resonance frequency situation of change and determine precalculated position
Pipeline 6 on whether there is hanging section.On the whole should pipeline exciting pigging experimental rig based on frequency sweep can in the pipeline 6
Detect whether pipeline 6 hanging section occurs as pressurized fluid advances under the operating mode of on-line production.
In the present embodiment, wiper 9 can provide drag force for connected mechanism.Specifically, the wiper 9
With skeleton 97.The skeleton 97 can be to be overall in hollow cylinder.Self power generation mechanism is provided with the skeleton 97 so that
The wiper 9 has generating function, can subsequently be provided power to by wire in connected vibration detection cabin 2
Each mechanism.Specifically, the generating mechanism can utilize fluid pressure for what is set in the skeleton 97 of the wiper 9
The turbogenerator that difference is generated electricity.
The skeleton 97 of wiper 9 has relative first end and the second end.Wherein, the first end is located at a left side for skeleton 97
Side, second end is located at the right side of skeleton 97.The first end cap 96 is respectively arranged with the two ends of the skeleton 97.In the bone
Support leather cup 91 is provided between frame 97 and each first end cap 96.It is described support the one side of leather cup 91 can fill skeleton 97 with
Annular space between pipeline 6 so that pressurized fluid is acted in its surface, so as to provide the power advanced for wiper 9；Separately
On the one hand it can be employed to ensure that the sealing between the end cap 96 of skeleton 97 and first.
Specifically, the global shape of the support leather cup 91 can be annular in shape.General, the pipeline 6 for transmitting natural gas is whole
Body is cylindrical, accordingly, and the outline of the support leather cup 91 can match with natural gas line 6, also rounded.Work as branch
When the support outline of leather cup 91 is rounded, the outline diameter (abbreviation external diameter) of support leather cup 91 can be close or equal to natural gas tube
The internal diameter in road 6.In addition, it is described support leather cup 91 inner ring shape and size can be with the skeleton 97 interior shape and size
Match.For example, when it is in hollow tubular that the skeleton 97 is overall, the Internal periphery diameter of the support leather cup 91 is (in referred to as
Footpath) can be identical with the internal diameter of skeleton 97 or it be close.
In the present embodiment, the number of the support leather cup 91 is at least one.It is preferred that, the support leather cup 91
Number is multiple.When wiper 9 is in moving process, support leather cup 91 can be in contact with the inwall of pipeline 6 to wear and tear, for abrasion
Part.When supporting leather cup 91 to set multiple, be conducive to extending the service life of pipeline exciting pigging experimental rig, it is ensured that it is in inspection
Reliability during survey.General, the material of support leather cup 91 is with certain elastic high-abrasive material, such as rubber.
In one embodiment, can between two neighboring support leather cup 91 when the number for supporting leather cup 91 is multiple
To be provided with shading ring 95.The shading ring 95 separates two neighboring support leather cup 91, it is ensured that the periphery formation of skeleton 97
Multistage wear-resisting supporting mechanism.The shape of the shading ring 95 can be in annular shape, and certainly, it can also be other shapes, specifically
The application do not make specific limit herein.When the shading ring 95 is in annular shape, its outline diameter is less than support skin
The outline diameter of bowl 91, the internal diameter of its inner ring can match with the interior shape and size of the skeleton 97.For example, working as institute
When stating the entirety of skeleton 97 in hollow tubular, the internal diameter of the shading ring 95 can be identical with the internal diameter of skeleton 97 or is close.
In one embodiment, floor 92 can be provided with the first end close to the skeleton 97 and the second end, with
Improve the intensity and reliability of whole skeleton 97.Specifically, for example, can be set in the first end of the skeleton 97 or the second end
There is ring-like supporting part, the floor 92 is set between the supporting part and the skeleton 97.The section of the floor 92 can be with
For triangle, to be further ensured that the stability and reliability of overall skeleton 97.
In a specific embodiment, 3 branch can be set respectively between first end cap 96 and floor 92
Support leather cup 91.Wherein, it is provided with shading ring 95 between two neighboring support leather cup 91.In addition, the support leather cup 91 often held and every
It can be connected from the end cap 96 of ring 95 and first by dismountable mode, for example, the mode that can be bolted
It is fixed.Specifically, can be fixedly connected respectively with 12 hexagon socket head cap screws 94 with nut 941, wherein, 12 supporting interior hexagonals
Bolt 94 and nut 941 can be circumferentially uniformly distributed, to ensure the reliability of connection.
In the present embodiment, the passway 961 of flow-through fluid is left on the first end cap 96 of wiper 9.Specifically
, the number of the passway 961 can be one or more, for example, can be up and down two be arranged on the first end cap 96
Individual passway 961.If fluid in pipeline 6 along direction from left to right flow when, the left end first end of the wiper 9
Passway 961 on lid 96 is that the passway 961 on entrance, the first end cap of right-hand member 96 is outlet.
In one embodiment, the left end of wiper 9 is also provided with being used to adjust the whole pipeline in other words of wiper 9
The flow valve 93 of the exciting pigging experimental rig speed of service.Detection dress is realized in control by adjusting the fluid flow of flow valve 93
That puts travels at the uniform speed.For example, the flow valve 93 can be with the phase of the first end cap 96 for being provided with entrance positioned at left end when assembling
Contact.During speed governing, the flow valve 93 can be by changing the sectional area of the upper channel of the first end cap 96 mouthfuls 961, so as to change fluid
Flow, and then the control pipeline exciting pigging experimental rig speed of service.For example, when the speed of service is more than pre-set velocity, stream
Amount valve 93 can adjust increase central fluid flow, reduce the pressure difference of wiper 9 or so, whole experimental rig is slowed down；Work as operation
When speed is less than pre-set velocity, the meeting adjust automatically of flow valve 93 reduces flow, increases the pressure difference of wiper 9 or so, makes to reach experiment
The effect that device accelerates.
In the present embodiment, it is arranged on turbodynamo 10 in the skeleton 97 of wiper 9 when in use, fluid is by left side
Entrance on first end cap 96 is flowed into be flowed out by the outlet of the first end cap of right side 96 again after sending out turbodynamo 10, using in pipe
Fluid with pressure flow electricity generation.The electric energy subsequently sent conveys each machine in vibration detection cabin 2 by wire through connecting tube 88
Structure, makes whole device sustainable operation only under internal pressure effect.
In the present embodiment, vibration detection cabin 2 can be with generally one annular seal space, and it is internal for setting sine sweep
Exciting agency and data acquisition equipment.Specifically, the vibration detection cabin 2 is provided with vibration cabin housing 23, the vibration cabin housing
23 be an outer rigid housing.The vibration cabin housing 23 is provided with the cylindrical drum that diameter is slightly less than the detection internal diameter of pipeline 6, cylindrical outer tube
Multiple rigid support legs 21 that can be used for vibration to transmit are provided with wall.
In a specific embodiment, two row's rigid support legs are respectively equipped with close to the periphery of end in cylindrical drum
21, often row, which can include 6 rigid support legs, 21,6 rigid support legs 21, can be evenly distributed in around cylinder barrel,
So as to ensure no matter which kind of posture vibration detection cabin 2 is in, rigid support leg 21 thereon can exist effectively with the inwall of pipeline 6
Contact, is easy to the collection to response data.Certainly, the number and distribution form of the rigid support leg 21 can also be other shapes
Formula, specific the application does not make specific limit herein.
In the present embodiment, the cylindrical drum two ends of vibration cabin housing 23 are respectively arranged with a second independent end
Lid 22.The two ends of second end cap 22 and cylindrical drum cylinder can be tightly connected by screw.In the remote wiper 9
Mileage wheel 1 is additionally provided with second end cap 22.Mileage wheel 1 is primarily served is accurately positioned effect to overhead positions.Specifically, can
To set two mileage wheels 1 symmetrical above and below to constitute independent location positioning system, the location positioning system is gone back in addition to mileage wheel 1
It can include：Compression spring 11, support arm 12 and mounting seat 13.Wherein, the mounting seat 13 is fixed on second end
On lid 22, one end of the compression spring 11 is fixed in the mounting seat 13, and the other end is fixed on the support arm 12；
The support arm 12 is arranged on by way of being hinged in the mounting seat 13, and its one end is fixed with the compression spring 11,
The other end is used to set the mileage wheel 1.Above-mentioned location positioning system, by adjusting compression spring 11 and support arm 12 to adapt to
The different internal diameters of pipeline 6, versatility is higher.
During detection, the mileage wheel 1 is contacted with rolling with the inwall of pipeline 6, and the rotating speed of the mileage wheel 1 can directly react
Go out the speed of service of whole pipeline exciting pigging experimental rig.By detecting that the rotating speed of mileage wheel 1 can be to the stream on wiper 9
The speed governing effect of amount valve 93 is fed back, so that the speed control to pipeline exciting pigging experimental rig is more accurately realized,
The advance so that pipeline exciting pigging experimental rig remains a constant speed.Remained a constant speed when the hanging detection means of pipeline 6 is detected advance when,
Advantageously ensure that the reliability and accuracy of testing result.
In the present embodiment, the vibration detection cabin 2 is connected by linkwork with the wiper 9.Specifically,
The linkwork can enable the vibration detection cabin 2 freely to be rotated relative to wiper 9.For example, shaking described in adjacent
Second end cap 22 in dynamic detection cabin 2 with being provided with hook 71 in a rotating manner respectively on the first end cap 96 of the wiper 9.
Wherein, the mode that the mode of the rotation can coordinate for hole axle.For example, being set on the end cap 22 of the first end cap 96 or second
Perforate is equipped with, one end of corresponding hook 71 is arranged in the perforate.Further, it can be set between two hooks 71
There is an intermediate connector 7, for connecting two hooks 71.Wherein, the connector 7 is the connection machine that can be rotated freely
Structure.Certainly, described two hooks 71 can also be structure as a whole, or, can also directly be coordinated by two hooks 71 etc., tool
The concrete form of the linkwork of body is not limited to the example above, and the application does not make specific limit herein.Work as pigging
When device 9 is connected with the vibration detection cabin 2 by the form being hinged, it can prevent between wiper 9 and the vibration detection cabin 2
Moment of torsion is produced, so as to increase the drag force needed for wiper 9.
In the present embodiment, sine sweep exciting agency is provided with vibration detection cabin 2, the sine sweep exciting agency
It can include：Sine excitation equipment 3 and mass 31.Wherein, the sine excitation equipment 3 can apply to buried pipeline inwall
Sinusoidal excitation.The mass 31 is used for the size for adjusting exciting force.
In the present embodiment, the sine sweep exciting agency is arranged on the vibration cabin by rigidly connected mode
In housing 23, the decay of vibration signal can be farthest reduced by being rigidly connected.Please refer to Fig. 3, the rigidity
The mode of connection can be by way of setting support frame 34.It is connected with for example, being tightly fastened in vibration cabin housing 23
Support frame 34.The overall vibration detection cabin 2 can be in hollow cylindrical type, and support frame as described above 34 is overall also into hollow cylinder
Shape, support frame as described above 34 is fixedly connected by way of interference fit.The inside of support frame as described above 34 can be provided with placement bottom
Seat 32 and fixation clip 33.The sine excitation equipment 3 is arranged between the placement base 32 and fixation clip 33.Wherein,
The placement base 32 can be specifically fixed on formation one in support frame as described above 34 by modes such as screw connections and lay flat
Platform, the bottom of sine excitation equipment 3 is placed on the placement base 32.
In the present embodiment, the sine sweep exciting agency can pass through direct or indirect mode and the vortex
Generator 10 is connected.For example when the sine sweep exciting agency is directly connected with the turbodynamo 10, it can lead to
Wire 81 is crossed to be connected with turbodynamo 10.In addition, when sine sweep exciting agency is connected with the turbodynamo 10 indirectly
When, it can be connected by wire 81 with power supply 5, and power supply 5 is connected by the wire in connecting tube 8 with turbodynamo 10 again.
The fixation clip 33 can be fixed in support frame as described above 34 by modes such as screw connections.Specifically, described
Fixation clip 33 can be located at the top of the sine excitation equipment 3.Specifically, Fig. 4 is please referred to, the fixation clip
Perforate is provided with 33.One end of the mass 31 is arranged in the perforate on the fixation clip 33.In addition, the fixation
Pressing plate 33 is that the one side that the sine excitation equipment 3 coordinates can be provided with stopper slot, and the stopper slot can swash with sine
The top end face of equipment of shaking 3 fastens, and is realized so as to preferably coordinate with the placement base 32 and support frame 34 to sine excitation
Equipment 3 it is spacing.
The sine sweep exciting agency when in use, by using the method for Active spurring to the diverse location of pipeline 6
Apply sine sweep excitation.Due to it is found by the applicant that：Suspended length has considerable influence to the first order resonance frequency of pipeline 6, profit
Each rank intrinsic frequency is demarcated in the contribution amount of different test positions with modal participation factors in frequency response function, outlet pipe is summarized
Interior Active spurring acts on the translation phenomenon of lower first order resonance frequency to judge whether to occur hanging section.
Specifically, being referred to shown in Fig. 5, Fig. 5 is first order resonance frequency amplitude variation diagram, and wherein abscissa represents hanging
Segment length, unit is rice (m), and ordinate represents amplitude, and unit is decibel (dB).As can be seen from Figure 5：Single order is total at position 3
Vibration frequency is with the change of suspended length, and when hanging section occurs in pipeline, its first order resonance frequency is obviously reduced, common by single order
Resonance frequency value judges whether pipeline hanging section occurs.
In the present embodiment, data acquisition equipment is produced for implementing collection, storage, analyzing and handling pipeline 6 after exciting
Raw response data, and determine that pipeline 6 whether there is hanging section based on the response data.Specifically, the data acquisition equipment
Data acquisition element 41 and data processing cabin 35 can be included.When sine sweep exciting agency carries out external drive work to pipeline 6
With rear, data acquisition element 41 can in real time be gathered to the response data of pipeline 6 and be transferred to data processing cabin 4.Further
, the response data that can be collected with data processing cabin 4 using data acquisition element 41 is analyzed, and determines that correspondence pipeline section is
It is no to there is hanging section.
Wherein, the data acquisition element 41 can be 3-axis acceleration sensor.3-axis acceleration sensor has body
The small and lightweight feature of product, can comprehensively accurately reflect the kinetic property of object with measurement space acceleration.Three axle adds
Velocity sensor is electrically connected with the data processing cabin 4, the data processing cabin 4 directly or indirectly with the turbodynamo
10 are electrically connected with.
When the data processing cabin 4 is directly electrically connected with the turbodynamo 10, specifically, wire can be passed through
The mode of connection is connected.When the data processing cabin 4 is electrically connected with affiliated turbodynamo 10 indirectly, the vibration detection
Power supply 5 is also provided with cabin 2, the power supply 5 is connected with the turbodynamo 10 by the wire in connecting tube 8,
Accordingly, the power supply 5 is electrically connected with the data processing cabin 4.That is, the turbodynamo 10 is in fluid pressure difference
The lower electric energy produced of effect can be stored first in power supply 5, subsequently powered from the power supply 5 to each mechanism stable.
In the present embodiment, the wiper 9 of setting and vibration detection cabin 2 are connected using front and back stages, and centre is can be with
The whole vibration detection device such as sine sweep exciting agency and data acquisition equipment, is compressed to body by bindiny mechanism's connection of rotation
In the smaller vibration detection cabin 2 of product, with stronger by property, the smaller pipeline section of radius of turn can be passed through.
The application additionally provides a kind of pipe of frequency sweep based on a kind of above-mentioned pipeline exciting pigging experimental rig based on frequency sweep
Road exciting pigging test method, this method may include steps of：
Step S10：Initial debugging, including：Installation and debugging wiper and vibration detection cabin, are tightly connected all parts；It is right
Flow valve sets initial flow, to transmission speed data after mileage wheel zeros data and startup, checks mileage wheel and wiper
Transmission efficiency；
Step S12：Exciting below deck equipment normal operational parameters are set, including：Speed, the frequency sweep of sine excitation equipment are interval
Section and exciting force width, send enabling signal, start excitational equipment and send pumping signal；Regulate signal acquisition elements sampling rate,
Initial signal is sent, sampling rate is set；
Step S14：Examined when the pipeline exciting pigging experimental rig based on frequency sweep is located in pressurized fluid pipeline
During survey, sinusoidal excitation signal is actively produced by the sine excitation equipment in vibration detection cabin, the signal passes through support frame, vibration
Cabin housing is delivered to inner-walls of duct, and response signal is passed back to signal acquisition member by inner-walls of duct by rigidity vibration cabin supporting leg
Part, then carries out data acquisition and storage by data acquisition equipment；
Step S16：Data acquisition equipment is according to the signal extraction first order resonance frequency information of collection and storage, and according to institute
First order resonance frequency situation of change is stated to determine to whether there is hanging section in pipeline.
In the present embodiment, when the pipeline exciting pigging experimental rig described herein based on frequency sweep is in pipeline 6
During normal detection operation, the pressure difference of the rear and front end of wiper 9 can be controlled by the flow valve 93 in wiper 9, when the experiment
Flow valve 93 can increase flow velocity space automatically when sensor detects the speed of service more than setting speed in device mileage wheel 1, subtract
The pressure differential at skinny device two ends, makes equipment slow down, and forms feed-back regulatory mechanism；Sine excitation equipment 3 can be led in vibration detection cabin 2
Movable property gives birth to pumping signal and is then passed to the inwall of pipeline 6 by the vibration cabin housing 23 of support frame 34, and response signal is by the inwall of pipeline 6
Data processing cabin 4 is passed back to by rigidity vibration cabin supporting leg 21, then the progress data acquisition of processing cabin 4 is adopted by data and deposits
Storage.Subsequent data acquisition cabin 4 is according to the signal extraction first order resonance frequency information of collection and storage, and according to the first order resonant
Frequency situation of change determines to whether there is hanging section in pipeline.If for example, there is the situation that first order resonance frequency is obviously reduced,
Illustrate that pipeline has hanging section at this.
The application additionally provides a kind of pipe of frequency sweep based on a kind of above-mentioned pipeline exciting pigging experimental rig based on frequency sweep
Road exciting pigging test method, this method may include steps of：
Step S11：Launch sine sweep accumulation signal；
Step S13：The vibrational feedback signal of pipeline is gathered in real time；
Step S15：The data processing of time domain and frequency domain is carried out to the vibrational feedback signal collected, different positions are obtained
Put the difference of response；
Step S17：Whether the pipeline of the difference identification pre-position responded according to the diverse location is in hanging section.
In the present embodiment, sine sweep accumulation signal can be launched by sine sweep excitational equipment 3, accordingly,
Pipeline 6 can produce corresponding vibrational feedback signal in the presence of the sine sweep accumulation signal.When passing through data acquisition element
41 collect the feedback signal, and by the signal in time-domain and frequency domain after correspondence analysis and data processing, it can be found that
There is larger difference with non-hanging section in the frequency amplitude change of hanging section.For example, according to Fig. 5, if there is first order resonant
The situation that frequency is obviously reduced, then illustrate that pipeline 6 has hanging section at this.
The experiment dress of the pipeline exciting pigging based on frequency sweep that can be arranged in pipeline 6 provided in the application embodiment
Put, the wiper 9 of setting and vibration detection cabin 2 are connected using front and back stages, with the turbodynamo 10 inside front end wiper 9
Generate electricity and power supply is provided.During detection, sine sweep excitation letter is actively produced using the sine sweep exciting agency in vibration detection cabin 2
Number, accordingly, the response data of data acquisition equipment collection in real time and processing pipeline 6 in the vibration detection cabin 2, and combine
The location data of mileage wheel 1, can in the case where time domain and frequency domain are to varying environment situation, the vibratory response situation analysis of pipeline 6 be sentenced respectively
Situation is supported around disconnected pipeline, integrates and is determined on the pipeline 6 in precalculated position in particular according to first order resonance frequency situation of change
With the presence or absence of hanging section.Being somebody's turn to do the pipeline exciting pigging experimental rig based on frequency sweep on the whole can be in pipeline 6 in on-line production
Detect whether pipeline 6 hanging section occurs as pressurized fluid advances under operating mode.
Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and
The all values of upper value, the interval that there are at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of part or the value of process variable (such as temperature, pressure, the time) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is to illustrate that such as 15 to 85,22 are also clearly listed in the specification arrives
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximate " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", at least end points including indicating.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describe the term " substantially by ... constitutes " of combination should include determined by element, composition, part or step and reality
There is no other elements, composition, part or the step of the basic novel feature for influenceing the combination in matter.Using term "comprising" or
" comprising " describes the combination of element here, composition, part or step it is also contemplated that basic by these elements, composition, part
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to which illustrate that " can with " include is described any
Attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.It is alternative
Ground, single integrated component, composition, part or step can be divided into multiple element, composition, part or the step of separation.It is used for
The open "a" or "an" for describing element, composition, part or step is not said to exclude other elements, composition, part
Or step.
Each above-mentioned embodiment in this specification is described by the way of progressive, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment was stressed is and other embodiment difference.
The foregoing is only several embodiments of the invention, although disclosed herein embodiment as above, but institute
Content is stated only to facilitate the embodiment for understanding the present invention and using, is not intended to limit the present invention.Any institute of the present invention
Belong to those skilled in the art, do not depart from disclosed herein spirit and scope on the premise of, can be in embodiment
Formal and details on make any modification and change, but the scope of patent protection of the present invention still must be with appended claims
The scope that book is defined is defined.
Claims (8)
1. a kind of pipeline exciting pigging experimental rig based on frequency sweep, it is characterised in that the pipeline exciting pigging experimental rig
It can be arranged in pipeline, it includes：Wiper and the vibration detection cabin connected by linkwork, wherein,
The wiper has hollow skeleton, and the two ends of the skeleton are respectively arranged with support leather cup and the first end cap, described
First end, which is covered, is provided with least one passway connected with the skeletal internal；The vortex that is internally provided with of the skeleton is sent out
Motor；
The vibration detection cabin, which has in vibration cabin housing, vibration cabin housing, is provided with data acquisition equipment and by rigidity
The mode of connection is provided with sine sweep exciting agency, wherein, the sine sweep exciting agency includes：Sine excitation equipment and
Mass for adjusting exciting force；The two ends of vibration cabin housing set the second end cap respectively, away from the wiper
The second end cap on be additionally provided with mileage wheel.
2. the pipeline exciting pigging experimental rig as claimed in claim 1 based on frequency sweep, it is characterised in that also including for inciting somebody to action
The sine sweep exciting agency and the rigidly connected support frame of vibration cabin housing, support frame as described above are internally provided with peace
Base and fixation clip are put, the sine excitation equipment is arranged between the placement base and fixation clip；The fixed pressure
Perforate is provided with plate；One end of the mass is arranged in the perforate on the fixation clip.
3. the pipeline exciting pigging experimental rig as claimed in claim 2 based on frequency sweep, it is characterised in that the vibration detection
Cabin is in integrally hollow cylindrical type, and support frame as described above is overall also into hollow cylinder, and support frame as described above passes through interference fit
Mode is fixedly connected.
4. the pipeline exciting pigging experimental rig as claimed in claim 1 based on frequency sweep, it is characterised in that vibration cabin shell
Body is respectively arranged with multiple circumferentially equally distributed rigid support legs in the periphery close to second end cap.
5. the pipeline exciting pigging experimental rig as claimed in claim 1 based on frequency sweep, it is characterised in that the data acquisition
Equipment includes：Data acquisition element and data processing cabin；Wherein, the data acquisition element is 3-axis acceleration sensor.
6. the pipeline exciting pigging experimental rig as claimed in claim 1 based on frequency sweep, it is characterised in that second end cap
The mileage wheel of upper setting includes symmetrical above and below two, and two mileage wheels symmetrical above and below constitute location positioning system, institute's rheme
Putting alignment system also includes：Support arm, compression spring and mounting seat；Wherein,
The mounting seat is fixed on second end cap；
One end of the compression spring is fixed in the mounting seat, and the other end is fixed on the support arm；
The support arm is arranged on by way of being hinged in the mounting seat, and its one end is fixed with the compression spring, separately
One end is used to set the mileage wheel.
7. a kind of method based on any described pipeline exciting pigging experimental rig based on frequency sweep of claim 1 to 6, it is special
Levy and be, including：
Initial debugging, including：Installation and debugging wiper and vibration detection cabin, are tightly connected all parts；Flow valve is set
Initial flow, to transmission speed data after mileage wheel zeros data and startup, checks the transmission efficiency of mileage wheel and wiper；
Exciting below deck equipment normal operational parameters are set, including：Speed, frequency sweep segment and the exciting force of sine excitation equipment
Width, sends enabling signal, starts excitational equipment and sends pumping signal；Regulate signal acquisition elements sampling rate, sends initial letter
Number, sampling rate is set；
When the pipeline exciting pigging experimental rig based on frequency sweep, which is located at, to be detected in pressurized fluid pipeline, pass through vibration
Sine excitation equipment in detection cabin actively produces sinusoidal excitation signal, and the signal is delivered to by support frame, vibration cabin housing
Inner-walls of duct, response signal is passed back to signal collecting element by inner-walls of duct by rigidity vibration cabin supporting leg, then passes through number
Data acquisition and storage are carried out according to collecting device；
Data acquisition equipment according to collection and storage signal extraction first order resonance frequency information, and according to the first order resonant frequency
Rate situation of change determines to whether there is hanging section in pipeline.
8. a kind of method based on any described pipeline exciting pigging experimental rig based on frequency sweep of claim 1 to 6, it is special
Levy and be, including：
Launch sine sweep accumulation signal；
The vibrational feedback signal of pipeline is gathered in real time；
The data processing of time domain and frequency domain is carried out to the vibrational feedback signal collected, the difference of diverse location response is obtained
It is different；
Whether the pipeline of the difference identification pre-position responded according to the diverse location is in hanging section.
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| CN201710560704.8A CN107255676B (en) | 2017-07-11 | 2017-07-11 | Pipeline excitation and cleaning test device and method based on frequency sweep |
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| CN201710560704.8A CN107255676B (en) | 2017-07-11 | 2017-07-11 | Pipeline excitation and cleaning test device and method based on frequency sweep |
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