CN110196145A - A kind of experimental rig and its application method causing vibration principle for verifying tube bundle flow - Google Patents
A kind of experimental rig and its application method causing vibration principle for verifying tube bundle flow Download PDFInfo
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- CN110196145A CN110196145A CN201910570900.2A CN201910570900A CN110196145A CN 110196145 A CN110196145 A CN 110196145A CN 201910570900 A CN201910570900 A CN 201910570900A CN 110196145 A CN110196145 A CN 110196145A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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Abstract
The present invention provides a kind of experimental rig that vibration principle is caused for verifying tube bundle flow comprising flow path groove and test simulation body, flow path groove include: inducer, import stable section, test section, outlet stable section, outlet section.Test simulation body is fixed on test section, and test simulation body includes developmental tube that is fluted and being mounted on inside grooves, and developmental tube can be one of single straight tube, straight tube beam, single bend pipe, bend pipe beam；When developmental tube is single straight tube or straight tube beam, import stable section, test section and outlet stable section are rectangularl runner slot, and groove is rectangular recess；When developmental tube is single bend pipe or bend pipe beam, import stable section, test section and outlet stable section are fan-shaped runners slot, and groove is scalloped recess.One end of developmental tube is fixed on the bottom of groove, and the other end of developmental tube is free end.The present invention passes through the comparison of bend pipe and straight tube test result, can verify to the principle of bend pipe beam Flow vibration.
Description
Technical field
The present invention relates to engineering test technical field more particularly to a kind of tests that vibration principle is caused for verifying tube bundle flow
Device and its application method.
Background technique
Nuclear steam generator or petrochemical industry heat exchanger are both for straight tube or U-tube development tube bundle flow at present
Vibration test is caused, there is no cause vibration principle verification test for the bend pipe line applied to spiral coil at present.
For coil steam generator, the stream that spiral heat-transfer pipe bears reactor coolant flowing and induces causes vibration
It is dynamic.There are many mechanism for Flow vibration caused by tube exterior fluid, such as turbulent flow random vibration, vortex shedding vibration and stray bullet unstability
Vibration etc..The above all kinds of Flow vibration phenomenons may cause the abrasion between helix tube and support strip, so that spiral be caused to pass
The breakage of heat pipe, it is therefore desirable to which the Flow vibration of spiral heating surface bank is assessed.
Straight tube is all based on for the semiempirical formula of Flow vibration items Analysis on Mechanism and calculating and is equally spaced (equilateral
Triangle or square) test of straight tube beam obtains.For the heating surface bank of spiral coil and non-equidistantly distributed form, these
The applicability of the formula and parameter that use in specification just needs additionally to be verified, and needs the stream for space bent pipe and bend pipe beam
Oscillation phenomenon is caused to carry out experimental study.
Summary of the invention
In order to solve the above technical problems, the present invention provide it is a kind of for verify tube bundle flow cause vibration principle experimental rig and
Its application method can not only be tested for single straight tube and straight tube Shu Kaizhan Flow vibration, can also be directed to single bend pipe
It is tested with bend pipe Shu Kaizhan Flow vibration, it, can be to the original of bend pipe beam Flow vibration by the comparison of bend pipe and straight tube test result
Reason is verified.
A kind of experimental rig causing vibration principle for verifying tube bundle flow provided by the invention, including flow path groove and test
Analogue body, the flow path groove include matching with the test simulation body: inducer, import stable section, test section, outlet are steady
Determine section, outlet section；
Wherein, the test simulation body is fixedly mounted on the test section, and the test simulation body include it is fluted with
And it is mounted on the developmental tube of the inside grooves, the developmental tube is single straight tube, in straight tube beam, single bend pipe, bend pipe beam
It is a kind of；When the developmental tube is single straight tube or straight tube beam, the import stable section, the test section and the outlet
Stable section is rectangularl runner slot, and the groove is rectangular recess；When the developmental tube is single bend pipe or bend pipe beam,
The import stable section, the test section and the outlet stable section are fan-shaped runners slot, and the groove is fan-shaped recessed
Slot；
One end of the developmental tube is fixed on the bottom of the groove, and the other end of the developmental tube is free end, institute
Two sides for stating groove are two opposite planes, and observation window is fixed at the top of the groove, the bottom of the groove,
Two sides and top collectively form a closed runner.
Preferably, the straight tube beam is the straight tube of more array distributions；
Outermost straight tube in the straight tube of the more array distributions and the width of flow path between the side of the groove are
The half of width of flow path in the straight tube of the more array distributions between adjacent two straight tubes；
Width between the single straight tube and the groove side wall surface is greater than the double diameter of the single straight tube.
Preferably, the bend pipe beam is the bend pipe of more array distributions；It is outermost in the bend pipe of the more array distributions
Width of flow path between lateral bending pipe and the side of the groove, be the more array distributions bend pipe in adjacent two bend pipes it
Between width of flow path half.
Preferably, the bottom of the groove has been bolted pedestal, and one end of the developmental tube is welded on the base
On seat.
Preferably, high-speed camera is installed on the outside of the observation window；
It is provided with acceleration transducer on the straight tube inner wall of the developmental tube or on elbow internal wall, in the developmental tube
Straight tube outer wall on or bend pipe outer wall on multiple foil gauges are circumferentially installed.
Preferably, there are two acceleration sensings for setting on the straight tube inner wall in the developmental tube or on elbow internal wall
Device, one of acceleration transducer are located on the inner wall in the middle part of the straight tube or bend pipe, another acceleration transducer is located at
On the inner wall of the free end of the straight tube or bend pipe.
Preferably, the free end of each straight tube or bend pipe in the developmental tube is all made of rubber stopper and is sealed.
The application method that the present invention also provides a kind of to cause the experimental rig of vibration principle for verifying tube bundle flow, the test
Device is above-mentioned experimental rig, and the application method includes the following steps:
S1, increase fluid flow in flow path groove in such a way that ladder increases flow；
S2, when the fluid flow increases to the target peak of setting, then gradually reduce the fluid flow；
S3, the fluid flow be reduced to setting minimum when, step S1 is returned in the 1st time~n-th, (n+1)th
Secondary execution step S4；
S4, ladder increase the fluid flow in the flow path groove, until the developmental tube in test simulation body reaches fatigue and breaks
Until when splitting；
Wherein, in above-mentioned each step, under different fluid flow, the vibration of developmental tube in the test simulation body is measured
Dynamic acceleration and strain-responsive time-history curves obtain the vibration acceleration of developmental tube in the test simulation body and strain with fluid
The variation relation of flow.
Preferably, further include following step:
When the developmental tube be single straight tube when, according to the vibration acceleration of straight tube in the test simulation body and strain with
It is corresponding to obtain vibratory response maximum point when straight tube generation vortex shedding in the test simulation body for the variation relation of fluid flow
Fluid flow when vibration locks occurs for straight tube in fluid flow and the test simulation body；
When the developmental tube is the straight tube of more array distributions, accelerated according to the vibration of straight tube in the test simulation body
Degree and the variation relation with fluid flow is strained, obtains in the test simulation body straight tube and vibratory response occurs when turbulence most
Fluid flow in a little bigger corresponding fluid flow or the test simulation body when straight tube generation stray bullet unstability.
Preferably, further include following step:
When the developmental tube be single bend pipe when, according to the vibration acceleration of bend pipe in the test simulation body and strain with
It is corresponding to obtain vibratory response maximum point when bend pipe generation Vortex Shedding in the test simulation body for the variation relation of fluid flow
Fluid flow when vibration locks occurs for bend pipe in fluid flow and the test simulation body；
When the developmental tube is the bend pipe of more array distributions, accelerated according to the vibration of bend pipe in the test simulation body
Degree and the variation relation with fluid flow is strained, obtains in the test simulation body bend pipe and vibratory response occurs when turbulence most
Fluid flow in a little bigger corresponding fluid flow or the test simulation body when bend pipe generation stray bullet unstability.
The invention has the following beneficial effects: the test section installation of flow path groove in experimental rig provided by the invention
Have test simulation body, the developmental tube in test simulation body be one of single straight tube, straight tube beam, single bend pipe, bend pipe beam, can
To carry out different pipe Flow vibration tests respectively, the present invention can not only be caused for single straight tube and straight tube Shu Kaizhan stream
Vibration test can also be tested for single bend pipe and bend pipe Shu Kaizhan Flow vibration, pass through bend pipe and straight tube test result
Comparison, can verify the principle of bend pipe beam Flow vibration.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the top view of the experimental rig of single straight tube Flow vibration principle provided by the invention.
Fig. 2 is the side view of the experimental rig of single straight tube Flow vibration principle provided by the invention.
Fig. 3 is the top view for the experimental rig that straight tube line provided by the invention causes vibration principle.
Fig. 4 is the side view for the experimental rig that straight tube line provided by the invention causes vibration principle.
Fig. 5 is the structural schematic diagram of single straight tube test simulation body provided by the invention.
Fig. 6 is the structural schematic diagram of straight tube beam test simulation body provided by the invention.
Fig. 7 is the structural schematic diagram of single bend pipe test simulation body provided by the invention.
Fig. 8 is the structural schematic diagram of bend pipe beam test simulation body provided by the invention.
Fig. 9 is the array distribution figure of more straight tubes in straight tube beam provided by the invention.
Figure 10 is the scheme of installation of acceleration transducer provided by the invention.
Figure 11 is installation and the fixed form schematic diagram of acceleration transducer provided by the invention.
Figure 12 is foil gauge mounting means schematic diagram provided by the invention.
Specific embodiment
The present invention provides a kind of experimental rig that vibration principle is caused for verifying tube bundle flow, as shown in Figure 1, Figure 2, Fig. 3, Fig. 4 institute
Show comprising flow path groove and test simulation body, flow path groove include matching with test simulation body: inducer, import are stablized
Section, test section, outlet stable section, outlet section.
Wherein, test simulation body is fixedly mounted on test section, and test simulation body includes fluted and is mounted on groove
Internal developmental tube, developmental tube are single straight tube shown in fig. 5, straight tube beam shown in fig. 6, single bend pipe shown in Fig. 7, Fig. 8
Shown in one of bend pipe beam；When developmental tube is single straight tube or straight tube beam, import stable section, test section and outlet
Stable section is rectangularl runner slot, and groove is rectangular recess；When developmental tube is single bend pipe or bend pipe beam, import is stablized
Section, test section and outlet stable section are fan-shaped runners slot, and groove is scalloped recess.
One end of developmental tube is fixed on the bottom of groove, and the other end of developmental tube is free end, two sides of groove
For two opposite planes, and observation window is fixed at the top of groove, the bottom of groove, two sides and top collectively form
One closed runner.It is located above test simulation body in test section and is also equipped with observation window, and is attached in test simulation body bottom
Light inlet is arranged in close import stable section or outlet stable section.
Wherein, when the straight tube or more array distributions that the test simulation body in experimental rig includes more array distributions
Bend pipe when, supervisor include two sections of import stable sections between inducer and test section, between this two sections of import stable sections
For rectification section.
Further, straight tube beam is the straight tube of more array distributions；Outermost straight tube in the straight tube of more array distributions
Width of flow path between the side of groove is the width of flow path in the straight tube of more array distributions between adjacent two straight tubes
Half.Identical lay ratio straight tube beam testpieces is copied, straight tube spacing is adjusted along flow direction, then it is straight can to obtain different lay ratios
Pipe test simulation body.Identical lay ratio straight tube beam and different lay ratio straight tube beams spatial distribution difference as shown in Figure 9.
Width between single straight tube and groove side wall surface is greater than the double diameter of single straight tube.
Bend pipe beam is the bend pipe of more array distributions；The side of outermost bend pipe and groove in the bend pipe of more array distributions
Width of flow path between face is the half of the width of flow path in the bend pipe of more array distributions between adjacent two bend pipes.
With straight tube Shu Xiangtong, there is also two kinds of test simulations of identical lay ratio and different lay ratios for bend pipe beam test simulation body
Body.
Width between single bend pipe and groove side wall surface is greater than the double diameter of single bend pipe.
Further, the bottom of groove has been bolted pedestal, and one end welding of developmental tube is on the base.
High-speed camera is installed on the outside of observation window；It is provided on the straight tube inner wall of developmental tube or on elbow internal wall
Acceleration transducer is circumferentially equipped with multiple foil gauges on the straight tube outer wall of developmental tube or on bend pipe outer wall.
There are two acceleration transducers for setting on straight tube inner wall in developmental tube or on elbow internal wall, one of them adds
Velocity sensor is located at another acceleration transducer on inner wall of the straight tube perhaps in the middle part of bend pipe and is located at the straight tube or bend pipe
Free end inner wall on.
The free end of each straight tube or bend pipe in developmental tube is all made of rubber stopper and is sealed.
For single straight tube test simulation body, as shown in Figure 10, acceleration transducer, high-speed camera and strain can be passed through
Piece measures vibration acceleration, displacement and the strain of pipe during the test.Wherein 2 acceleration transducers are separately mounted to pipe
The inside of sub- span centre and free end position, acceleration transducer are fixed by screw and auxiliary installation device, pipe most
End carries out waterproof sealing using rubber stopper, and the installation of acceleration transducer and fixed form are shown in Figure 11.Flow path groove (groove)
Top wall surface is used as watch window using transparent material, external erection high-speed camera, can vibration position to pipe free end
It is moved into row high-speed camera, is convenient for subsequent image analysis.Apart from pipe fixing end certain distance, tube outer wall face circumferentially
The outside of uniformly 4 foil gauges of installation, foil gauge carries out insulation blocking, the visible figure of the mounting means of foil gauge using rubber sleeve
12。
The Setup Type of sensor, installation site and installation fixed form and single straight tube in single bend pipe test simulation body
Test simulation body is identical.
Straight tube beam test simulation body and bend pipe beam test simulation body be to select partial tube to measure, wherein sensor
Setup Type, installation site and installation fixed form are identical as single straight tube test simulation body.
Each test simulation body installs measurement sensor, and corresponding experimental rig connection waterpower rack can be carried out pair
The Flow vibration test answered.
The application method that the present invention also provides a kind of to cause the experimental rig of vibration principle for verifying tube bundle flow, experimental rig
For above-mentioned experimental rig, application method includes the following steps:
S1, increase fluid flow in flow path groove in such a way that ladder increases flow；
S2, when fluid flow increases to the target peak of setting, then gradually reduce fluid flow；
S3, fluid flow be reduced to setting minimum when, return to step S1 in the 1st time~n-th, held at (n+1)th time
Row step S4；
S4, ladder increase the fluid flow in flow path groove, until when the developmental tube in test simulation body reaches fatigue fracture
Until；
Wherein, in above-mentioned each step, under different fluid flow, the vibration for measuring developmental tube in test simulation body adds
Speed and strain-responsive time-history curves obtain the vibration acceleration of developmental tube in test simulation body and strain the change with fluid flow
Change relationship.
The application method that the experimental rig of vibration principle is caused for verifying tube bundle flow further includes following step:
When developmental tube is single straight tube, according to the vibration acceleration of straight tube in test simulation body and strain with fluid flow
Variation relation, obtain in test simulation body straight tube and vibratory response maximum point corresponding fluid flow when vortex shedding occur, with
And fluid flow when vibration locks occurs for straight tube in test simulation body；
When developmental tube is the straight tube of more array distributions, according to the vibration acceleration of straight tube and strain in test simulation body
With the variation relation of fluid flow, obtains straight tube in test simulation body and vibratory response maximum point corresponding stream when turbulence occurs
Fluid flow in body flow or test simulation body when straight tube generation stray bullet unstability.
The application method that the experimental rig of vibration principle is caused for verifying tube bundle flow further includes following step:
When developmental tube is single bend pipe, according to the vibration acceleration of bend pipe in test simulation body and strain with fluid flow
Variation relation, obtain in test simulation body bend pipe and vibratory response maximum point corresponding fluid flow when Vortex Shedding occur, with
And fluid flow when vibration locks occurs for bend pipe in test simulation body；
When developmental tube is the bend pipe of more array distributions, according to the vibration acceleration of bend pipe and strain in test simulation body
With the variation relation of fluid flow, obtains bend pipe in test simulation body and vibratory response maximum point corresponding stream when turbulence occurs
Fluid flow in body flow or test simulation body when bend pipe generation stray bullet unstability.
The above method can be specifically described by following examples:
(1) single straight tube Flow vibration test.
Ladder increases the fluid flow in experimental rig, obtains the vibratory response of single straight tube under different flow (flow velocity).
When flow increases to the target peak of setting, then flow is gradually reduced to minimum is set, ladder increases stream again later
Measure the target peak of setting.After above procedure is repeated 3 times, when flow the 4th reaches setting peak, continue slow
Ladder increases flow, until pipe reaches fatigue fracture.It can stop testing after tube brakes in test simulation body.Needle
The acceleration and strain-responsive time-history curves that convection current causes vibration test measurement to obtain obtain the strain of measurement pipe by statistical analysis
With acceleration vibratory response with the variation relation of flow (flow velocity), and matched curve, test simulation body is obtained according to matched curve
Vibratory response maximum point corresponding flow when vortex shedding occurs for middle pipe.
(2) single bend pipe Flow vibration test.
Ladder increases flow, obtains the vibratory response of single bend pipe under different flow (flow velocity).When flow increases to setting
Target peak when, then gradually reduce flow, later again ladder increase flow to set target peak.Above procedure
After being repeated 3 times, when flow the 4th reaches setting peak, continues slow ladder and increase flow, until pipe reaches fatigue
Until fracture.It can stop testing after tube brakes.When the acceleration and strain-responsive that obtain for Flow vibration test measurement
Journey curve, the strain and acceleration vibratory response for obtaining measurement pipe by statistical analysis and are fitted song with the variation relation of flow velocity
Line, according to matched curve obtain pipe occur vortex shedding when the corresponding flow of vibratory response maximum point.
Carry out for the acceleration of single straight tube and single bend pipe, displacement and strain value under same traffic step to score
Analysis checks the difference of bend pipe and the same measurement parameter of straight tube.And be based on bend pipe measurement parameter, to the empirical equation of existing straight tube into
Row fitting and amendment.
(3) straight tube line causes vibration test.
Ladder increases flow, obtains the corresponding ginseng such as vibration acceleration, vibration strains of different flow (flow velocity) lower straighttube beam
Number.When flow increases to the target peak of setting, then flow is gradually reduced, ladder increases flow to setting again later
Target peak.After above procedure is repeated 3 times, when flow the 4th reaches the target peak of setting, continue slow ladder
Increase flow, until thering is pipe to reach fatigue fracture.It can stop testing after tube brakes.It tests and surveys for Flow vibration
The acceleration and strain-responsive time-history curves measured obtains the strain and acceleration vibratory response of measurement pipe by statistical analysis
With the variation relation of flow velocity, and matched curve, vibratory response when turbulence occurs for straight tube beam tube is obtained according to matched curve
Flow when " stray bullet unstability " occurs for the corresponding flow of maximum point or straight tube beam tube.
According to the above implementation steps, carries out stream respectively for identical lay ratio straight tube beam and different lay ratio straight tube beams and cause vibration
Dynamic test.
(4) bend pipe beam vibration characteristics and Flow vibration are tested.
Ladder increases flow, obtains the corresponding ginseng of vibration acceleration, vibration strains of bend pipe beam etc. under different flow (flow velocity)
Number.When flow increases to the target peak of setting, then flow is gradually reduced, ladder increases flow to setting again later
Target peak.After above procedure is repeated 3 times, when flow the 4th reaches the target peak of setting, continue slow ladder
Increase flow, until thering is pipe to reach fatigue fracture.It can stop testing after tube brakes.It tests and surveys for Flow vibration
The acceleration and strain-responsive time-history curves measured obtains the strain and acceleration vibratory response of measurement pipe by statistical analysis
With the variation relation of flow velocity, and matched curve, vibratory response when turbulence occurs for bend pipe beam tube is obtained according to matched curve
Flow when " stray bullet unstability " occurs for the corresponding flow of maximum point or bend pipe beam tube.
According to the above implementation steps, carries out stream respectively for identical lay ratio bend pipe beam and different lay ratio bend pipe beams and cause vibration
Dynamic test.
Carry out comparative analysis for the acceleration of bend pipe beam and straight tube beam, displacement and strain value under same traffic step,
Check the difference of bend pipe beam and straight tube Shu Tongyi measurement parameter.And it is based on bend pipe beam measurement parameter, to the experience of existing straight tube beam
Formula is fitted and corrects.
Experimental rig provided by the invention has the advantages that
1) experimental rig structure type provided by the invention is simple, by diversified module design, can substantially reduce
Difficulty is fabricated, experimentation cost is reduced.
2) present invention is fixed using cantilever beam form, is easier to realize Flow vibration phenomenon, be greatly reduced to water
The specification requirement of power test-bed.
3) present invention carries out test primarily directed to the principle of bend pipe beam Flow vibration, can also cause vibration for straight tube line
Test is unfolded in dynamic principle, and test result and conclusion can be not limited to a certain specific engineering product, can be applied to mostly
In engineering product of the number comprising bend pipe and bend pipe beam and straight tube and straight tube beam.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of experimental rig for causing vibration principle for verifying tube bundle flow, which is characterized in that including flow path groove and test mould
Quasi- body, the flow path groove includes matching with the test simulation body: inducer, import stable section, test section, outlet are stablized
Section, outlet section；
Wherein, the test simulation body is fixedly mounted on the test section, and the test simulation body includes fluted and peace
Mounted in the developmental tube of the inside grooves, the developmental tube is one of single straight tube, straight tube beam, single bend pipe, bend pipe beam；
When the developmental tube is single straight tube or straight tube beam, the import stable section, the test section and the outlet are stablized
Duan Junwei rectangularl runner slot, and the groove is rectangular recess；It is described when the developmental tube is single bend pipe or bend pipe beam
Import stable section, the test section and the outlet stable section are fan-shaped runners slot, and the groove is scalloped recess；
One end of the developmental tube is fixed on the bottom of the groove, and the other end of the developmental tube is free end, described recessed
Two sides of slot are two opposite planes, and observation window is fixed at the top of the groove, the bottom of the groove, two
Side and top collectively form a closed runner.
2. the experimental rig according to claim 1 for causing vibration principle for verifying tube bundle flow, which is characterized in that described straight
Tube bank is the straight tube of more array distributions；
Outermost straight tube in the straight tube of the more array distributions and the width of flow path between the side of the groove, are described
The half of width of flow path in the straight tube of more array distributions between adjacent two straight tubes；
Width between the list straight tube and the groove side wall surface is greater than the double diameter of single straight tube.
3. the experimental rig according to claim 1 for causing vibration principle for verifying tube bundle flow, which is characterized in that described curved
Tube bank is the bend pipe of more array distributions；The side of outermost bend pipe and the groove in the bend pipe of the more array distributions
Between width of flow path, be the half of the width of flow path in the bend pipe of the more array distributions between adjacent two bend pipes.
4. the experimental rig according to claim 1 for causing vibration principle for verifying tube bundle flow, which is characterized in that described recessed
The bottom of slot has been bolted pedestal, and one end of the developmental tube is welded on the pedestal.
5. the experimental rig according to claim 1 for causing vibration principle for verifying tube bundle flow, which is characterized in that described
High-speed camera is installed on the outside of observation window；
It is provided with acceleration transducer on the straight tube inner wall of the developmental tube or on elbow internal wall, in the straight of the developmental tube
Multiple foil gauges are circumferentially installed in pipe outer wall or on bend pipe outer wall.
6. the experimental rig according to claim 5 for causing vibration principle for verifying tube bundle flow, which is characterized in that described
There are two acceleration transducer, one of acceleration transducers for setting on straight tube inner wall in developmental tube or on elbow internal wall
Another acceleration transducer is located at the free end of the straight tube or bend pipe on the inner wall in the middle part of the straight tube perhaps bend pipe
On inner wall.
7. the experimental rig according to claim 5 for causing vibration principle for verifying tube bundle flow, which is characterized in that the examination
The free end of each straight tube or bend pipe tested in pipe is all made of rubber stopper and is sealed.
8. a kind of application method for causing the experimental rig of vibration principle for verifying tube bundle flow, which is characterized in that the test dress
The described in any item experimental rigs of claim 1~7 are set to, the application method includes the following steps:
S1, increase fluid flow in flow path groove in such a way that ladder increases flow；
S2, when the fluid flow increases to the target peak of setting, then gradually reduce the fluid flow；
S3, the fluid flow be reduced to setting minimum when, return to step S1 in the 1st time~n-th, held at (n+1)th time
Row step S4；
S4, ladder increase the fluid flow in the flow path groove, until when the developmental tube in test simulation body reaches fatigue fracture
Until；
Wherein, in above-mentioned each step, under different fluid flow, the vibration for measuring developmental tube in the test simulation body adds
Speed and strain-responsive time-history curves obtain the vibration acceleration of developmental tube in the test simulation body and strain with fluid flow
Variation relation.
9. the application method according to claim 8 for causing the experimental rig of vibration principle for verifying tube bundle flow, feature
It is, further includes following step:
When the developmental tube is single straight tube, according to the vibration acceleration of straight tube in the test simulation body and strain with fluid
The variation relation of flow obtains straight tube in the test simulation body and vibratory response maximum point corresponding fluid when vortex shedding occurs
Fluid flow when vibration locks occurs for straight tube in flow and the test simulation body；
When the developmental tube is the straight tube of more array distributions, according to the vibration acceleration of straight tube in the test simulation body and
Strain obtains straight tube in the test simulation body and vibratory response maximum point when turbulence occurs with the variation relation of fluid flow
Fluid flow in corresponding fluid flow or the test simulation body when straight tube generation stray bullet unstability.
10. the application method according to claim 9 for causing the experimental rig of vibration principle for verifying tube bundle flow, feature
It is, further includes following step:
When the developmental tube is single bend pipe, according to the vibration acceleration of bend pipe in the test simulation body and strain with fluid
The variation relation of flow obtains bend pipe in the test simulation body and vibratory response maximum point corresponding fluid when Vortex Shedding occurs
Fluid flow when vibration locks occurs for bend pipe in flow and the test simulation body；
When the developmental tube is the bend pipe of more array distributions, according to the vibration acceleration of bend pipe in the test simulation body and
Strain obtains bend pipe in the test simulation body and vibratory response maximum point when turbulence occurs with the variation relation of fluid flow
Fluid flow in corresponding fluid flow or the test simulation body when bend pipe generation stray bullet unstability.
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| CN113375900A (en) * | 2021-05-14 | 2021-09-10 | 东方电气集团科学技术研究院有限公司 | Method for testing amplitude and frequency response of flow-induced vibration of tube bundle structure |
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2019
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| CN113375900A (en) * | 2021-05-14 | 2021-09-10 | 东方电气集团科学技术研究院有限公司 | Method for testing amplitude and frequency response of flow-induced vibration of tube bundle structure |
| CN113390607A (en) * | 2021-05-14 | 2021-09-14 | 东方电气集团科学技术研究院有限公司 | Non-contact displacement testing method for flow-induced vibration of tube bundle structure |
| CN113532347A (en) * | 2021-06-18 | 2021-10-22 | 中核武汉核电运行技术股份有限公司 | Heat transfer pipe vibration displacement measurement system and method based on strain measurement |
| CN113532347B (en) * | 2021-06-18 | 2023-08-15 | 中核武汉核电运行技术股份有限公司 | Heat transfer tube vibration displacement measurement system and method based on strain measurement |
| CN113566867A (en) * | 2021-07-27 | 2021-10-29 | 中国工程物理研究院总体工程研究所 | Sensor mounting process for spiral pipe bundle assembly test body |
| CN113724903A (en) * | 2021-08-27 | 2021-11-30 | 中国核动力研究设计院 | Sensor examination device |
| CN113724903B (en) * | 2021-08-27 | 2023-11-24 | 中国核动力研究设计院 | Sensor examination device |
| CN114526884A (en) * | 2022-02-17 | 2022-05-24 | 中国核电工程有限公司 | Verification device capable of reducing pipeline flow-induced vibration |
| WO2024051724A1 (en) * | 2022-09-08 | 2024-03-14 | 深圳中广核工程设计有限公司 | Flow-induced vibration test apparatus and method, computer device, storage medium, and product |
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