CN209247331U - It is a kind of for studying the experimental provision of pipeline covibration - Google Patents
It is a kind of for studying the experimental provision of pipeline covibration Download PDFInfo
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- CN209247331U CN209247331U CN201821380544.5U CN201821380544U CN209247331U CN 209247331 U CN209247331 U CN 209247331U CN 201821380544 U CN201821380544 U CN 201821380544U CN 209247331 U CN209247331 U CN 209247331U
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Abstract
The utility model belongs to submarine pipeline fatigue test technology field, discloses a kind of for studying the experimental provision of pipeline covibration, comprising: supporting structure and the experimental channel being fixed thereon, the circulatory system, excitation system and measuring system；The circulatory system includes: that fluid stores case, circulating pump and fluid circuit, and the fluid stores case and forms fluid circulation structure by the circulating pump, the fluid circuit and the experimental channel；The vibration output end of the excitation system is connected with the main body of the experimental channel；The measuring system includes: flowmeter, acceleration transducer and strain measurement equipment, and the flowmeter is arranged on the fluid circuit, and the induction end of the acceleration transducer and the strain measurement equipment is connected with the main body of the experimental channel.Experimental provision provided by the utility model for studying pipeline covibration can reliably realize the relationship of submarine pipeline resonance characteristics Yu tube fluid flow velocity comprehensively.
Description
Technical field
It is the utility model relates to submarine pipeline fatigue test technology field, in particular to a kind of existing for studying pipeline resonance
The experimental provision of elephant.
Background technique
Currently, domestic submarine pipeline full scale fatigue test technical research have developed rapidly, it is tired using low frequency in the prior art
The actual condition of labor test simulation submarine pipeline；But the test period is longer, at pipeline-weld the deficiencies of circumferential direction unbalance stress it
Place affects the reliability of experiment.Accordingly, the new method that high frequency fatigue test is carried out using pipeline resonance principle is proposed, when right
Pipeline resonates when the excited frequency that test pipe applies reaches the intrinsic frequency of pipeline, and pipeline fatigue rate is accelerated at this time,
The test period can substantially be shortened, improve test efficiency.In order to make pipeline resonance be easier to realize, it is necessary to consolidate to submarine pipeline
There is vibration characteristics to be studied.
Utility model content
The utility model provide it is a kind of for studying the experimental provision of pipeline covibration, for studying water flow in pipeline
Change in flow pipeline occurs the affecting laws of covibration.
In order to solve the above technical problems, the utility model provides a kind of experiment dress for studying pipeline covibration
It sets, comprising: supporting structure and the experimental channel being fixed thereon, the circulatory system, excitation system and measuring system；
The circulatory system includes: that fluid stores case, circulating pump and fluid circuit, and the fluid stores case described in
Circulating pump, the fluid circuit and the experimental channel form fluid circulation structure；
The vibration output end of the excitation system is connected with the main body of the experimental channel；
The measuring system includes: flowmeter, acceleration transducer and strain measurement equipment, and the flowmeter setting exists
On the fluid circuit, the induction end of the acceleration transducer and the strain measurement equipment and the master of the experimental channel
Body is connected.
Further, the both ends of the experimental channel are fixed on the supporting structure by clamping assembly；
The clamping assembly includes: jig main body, rolling bearing and rubber pad；
The outer ring of the rolling bearing is compressed by the rubber pad, and the rubber pad is fixed in the jig main body
Side, the form of the rubber pad are matched with the shape of the experimental channel.
Further, the clamping assembly further include: fixed plate；
The quantity of the rolling bearing is at least two, and face is arranged in the fixed plate.
Further, the both ends of the experimental channel pass through hose respectively and are connected to the fluid circuit.
Further, the circulatory system further include: accumulator；
The accumulator is connected on the fluid circuit.
Further, the excitation system includes: vibration excitor and vibration guide rod；
It is described vibration guide rod one end be connected with the vibration output end of the vibration excitor, it is described vibrate guide rod the other end and
The main body of the experimental channel is connected.
Further, the excitation system further include: actuating vibration table；
The actuating vibration table is fixed on the supporting structure, and the vibration excitor is fixed on the actuating vibration table.
Further, between the actuating vibration table and the supporting structure and between the actuating vibration table and the vibration excitor
It is provided with resilient cushion.
Further, the supporting structure includes: pedestal and vibration isolation case；
The vibration isolation case is fixed on the base, and the vibration excitor and the actuating vibration table are arranged in the vibration
In shielded box.
Further, the supporting structure further include: shield；
The shield is fixed on the base, and the experimental channel is arranged in the shield.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
What is provided in the embodiment of the present application is used to study the experimental provision of pipeline covibration, stores case by fluid, follows
Ring pump, fluid circuit and experimental channel form the controllable closed loop fluid loop structure of a flow speed stability, lifting test data
Reliability；It is acted directly on experimental channel by excitation system, the capture of resonant frequency is realized by frequency sweep, be in measurement
Under the cooperation of system, the correlation of fluid flow rate and resonant frequency is obtained；Flow velocity is detected especially by flowmeter, passes through acceleration
Sensor and strain measurement equipment obtain acceleration and the strain of experimental channel, in conjunction with vibration excitor real-time frequency, realize flow velocity with
The initial data of resonance characteristics obtains.
Detailed description of the invention
Fig. 1 is provided by the utility model for studying the structural schematic diagram of the experimental provision of pipeline covibration；
Fig. 2 is the structural schematic diagram of vibration isolation case provided by the utility model.
Specific embodiment
The embodiment of the present application is a kind of for studying the experimental provision of pipeline covibration by providing, for studying in pipeline
The change in flow of water flow pipeline occurs the affecting laws of covibration.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the utility model embodiment and embodiment are to this Shen
Please technical solution detailed description, rather than the restriction to technical scheme, in the absence of conflict, the application are real
The technical characteristic applied in example and embodiment can be combined with each other.
Referring to Fig. 1 and Fig. 2, a kind of for studying the experimental provision of pipeline covibration, comprising: supporting structure and fixation
Experimental channel 4 on it, the circulatory system, excitation system and measuring system.
Specifically, the circulatory system includes: that fluid stores case 6, circulating pump 5 and fluid circuit 8, and the fluid stores
It deposits case 6 and fluid circulation structure is formed by the circulating pump 5, the fluid circuit 8 and the experimental channel 4；To pass through
Circulating pump 5 realizes the control on demand of fluid-flow rate in fluid circulation structure, to realize the convenient behaviour of seriation experiment
Control.
In general, circulating pump 5 can be connect frequency modulator by the external world and realize frequency control, so as to adjust its flow；Circulating pump 5
It is used cooperatively using centrifugal pump and frequency modulator.
The vibration output end of the excitation system is connected with the main body of the experimental channel 4, to realize resonance matching；It presses
Vibration frequency scanning is carried out according to certain amplitude, enables the vibration frequency of experimental channel 4 and the real-time vibration frequency of excitation system
Enough more easily reach resonance.
Referring to fig. 2, in general, the excitation system includes: vibration excitor 1 and vibration guide rod 2；The vibration guide rod 2
One end be connected with the vibration output end of the vibration excitor 1 by jockey 3, the other end for vibrating guide rod 2 with it is described
The main body of experimental channel 4 is connected, from the conduction for realizing vibration.
In general, vibration excitor 1 can be controlled with outer signal generator and power amplifier, the accurate vibration for vibration excitor
System generallys use sine wave as control signal, the control of the output vibration frequency and amplitude of vibration excitor 1 is realized, to realize
Frequency sweep will cause the resonance of experimental channel 4 when vibration frequency reaches a certain range.At this point, being adopted by data measurin system
The experimental datas such as the strain of the flow velocity and pipeline of collector and acceleration.
Flow velocity is then adjusted by circulating pump 5, realizes next round experiment, in this way, carrying out cyclic test.
The measuring system includes: flowmeter 9, acceleration transducer and strain measurement equipment, and the flowmeter 9 is arranged
On the fluid circuit 8, the induction end of the acceleration transducer and the strain measurement equipment and the experimental channel 4
Main body be connected, respectively measurement experiment pipeline vibration acceleration and strain.
In general, piezoelectric acceleration transducer can be used in acceleration transducer, is fixed on the master of the experimental channel 4
On body, it is more suitable for the acceleration detection of this vibration object；Strain transducer can be used in strain measurement equipment.
The both ends of the experimental channel 4 are fixed on the bracket by clamping assembly 12；
The clamping assembly 12 includes: jig main body 15 and rubber pad；
The rubber pad is fixed on 15 inside of jig main body, the form of the rubber pad and the experimental channel
Shape matches.
In general, a rolling bearing, the main body setting of the experimental channel 4 can be also set in the jig main body
In the inner ring of the rolling bearing；The outer ring of the rolling bearing is compressed by the rubber pad.
Further, the clamping assembly 12 further include: fixed plate 16；The quantity of the rolling bearing is at least two,
And face is arranged in the fixed plate 16, so that at least the both ends of the experimental channel 4 be fixed.
In general, the fixed plate 16 can be fixed on the bracket by connecting rod 17, is simplified to fix structure.
In order to reduce the influence of circulation line 8, the both ends of the experimental channel 4 pass through hose 19 and the fluid respectively
Pipeline connection obstructs vibration transmitting, while being also convenient for experimental channel 4 to adjust position in a certain range.
Further, the circulatory system further include: accumulator 7；The accumulator 7 is connected on the fluid circuit 8,
For buffer fluid pulse, the effect of current stabilization is realized.
Referring to fig. 2, in general, the also settable actuating vibration table 13 of the excitation system；The actuating vibration table 13 is fixed on institute
It states on supporting structure, the vibration excitor 1 is fixed on the actuating vibration table 13.
It is provided between the actuating vibration table 13 and the supporting structure and between the actuating vibration table and the vibration excitor
Resilient cushion 18, for reducing the conduct vibrations to supporting structure.
The supporting structure includes: pedestal 10 and vibration isolation case 11；
The vibration isolation case 11 is fixed on the pedestal 10, and the vibration excitor 1 and the setting of the actuating vibration table 13 exist
In the vibration isolation case 11, noise isolation, and protection vibration excitor 1 are realized.
Correspondingly, the fluid stores case 6, circulating pump 5, fluid circuit 8 is all fixed on the pedestal 10.
Further, the supporting structure further include: shield 14；The shield 14 is fixed on the pedestal 10,
The experimental channel 4 is arranged in the shield 14, realizes and the external world is isolated.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
What is provided in the embodiment of the present application is used to study the experimental provision of pipeline covibration, stores case by fluid, follows
Ring pump, fluid circuit and experimental channel form the controllable closed loop fluid loop structure of a flow speed stability, lifting test data
Reliability；It is acted directly on experimental channel by excitation system, the capture of resonant frequency is realized by frequency sweep, be in measurement
Under the cooperation of system, the correlation of fluid flow rate and resonant frequency is obtained；Flow velocity is detected especially by flowmeter, passes through acceleration
Sensor and strain measurement equipment obtain acceleration and the strain of experimental channel, in conjunction with vibration excitor real-time frequency, realize flow velocity with
The initial data of resonance characteristics obtains.
It should be noted last that the above specific embodiment is only to illustrate the technical solution of the utility model rather than limits
System, although the utility model is described in detail referring to example, those skilled in the art should understand that, it can be right
The technical solution of the utility model is modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (10)
1. a kind of for studying the experimental provision of pipeline covibration characterized by comprising supporting structure and be fixed on it
On experimental channel, the circulatory system, excitation system and measuring system；
The circulatory system includes: that fluid stores case, circulating pump and fluid circuit, and the fluid stores case and passes through the circulation
Pump, the fluid circuit and the experimental channel form fluid circulation structure；
The vibration output end of the excitation system is connected with the main body of the experimental channel；
The measuring system includes: flowmeter, acceleration transducer and strain measurement equipment, and the flowmeter is arranged described
On fluid circuit, the induction end and the main body phase of the experimental channel of the acceleration transducer and the strain measurement equipment
Even.
2. as described in claim 1 for studying the experimental provision of pipeline covibration, it is characterised in that: the experimental channel
Both ends be fixed on the supporting structure by clamping assembly；
The clamping assembly includes: jig main body, rolling bearing and rubber pad；
The outer ring of the rolling bearing is compressed by the rubber pad, and the rubber pad is fixed on the inside of the jig main body,
The form of the rubber pad is matched with the shape of the experimental channel.
3. as claimed in claim 2 for studying the experimental provision of pipeline covibration, which is characterized in that the clamping assembly
Further include: fixed plate；
The quantity of the rolling bearing is at least two, and face is arranged in the fixed plate.
4. as described in claim 1 for studying the experimental provision of pipeline covibration, it is characterised in that: the experimental channel
Both ends pass through hose respectively and be connected to the fluid circuit.
5. as described in claim 1 for studying the experimental provision of pipeline covibration, which is characterized in that the circulatory system
Further include: accumulator；
The accumulator is connected on the fluid circuit.
6. as claimed in any one of claims 1 to 5 for studying the experimental provision of pipeline covibration, which is characterized in that institute
Stating excitation system includes: vibration excitor and vibration guide rod；
It is described vibration guide rod one end be connected with the vibration output end of the vibration excitor, it is described vibrate guide rod the other end with it is described
The main body of experimental channel is connected.
7. as claimed in claim 6 for studying the experimental provision of pipeline covibration, which is characterized in that the excitation system
Further include: actuating vibration table；
The actuating vibration table is fixed on the supporting structure, and the vibration excitor is fixed on the actuating vibration table.
8. as claimed in claim 7 for studying the experimental provision of pipeline covibration, it is characterised in that: the actuating vibration table with
Resilient cushion is provided between the supporting structure and between the actuating vibration table and the vibration excitor.
9. as claimed in claim 8 for studying the experimental provision of pipeline covibration, which is characterized in that the supporting structure
It include: pedestal and vibration isolation case；
The vibration isolation case is fixed on the base, and the vibration excitor and the actuating vibration table are arranged in the vibration isolation
In case.
10. as claimed in claim 9 for studying the experimental provision of pipeline covibration, which is characterized in that the bracket knot
Structure further include: shield；
The shield is fixed on the base, and the experimental channel is arranged in the shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821380544.5U CN209247331U (en) | 2018-08-27 | 2018-08-27 | It is a kind of for studying the experimental provision of pipeline covibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821380544.5U CN209247331U (en) | 2018-08-27 | 2018-08-27 | It is a kind of for studying the experimental provision of pipeline covibration |
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| Publication Number | Publication Date |
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| CN209247331U true CN209247331U (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821380544.5U Expired - Fee Related CN209247331U (en) | 2018-08-27 | 2018-08-27 | It is a kind of for studying the experimental provision of pipeline covibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112985759A (en) * | 2021-02-09 | 2021-06-18 | 北京工业大学 | Fluid-solid coupling experiment platform based on influence of flow velocity on cantilever flow transmission pipe |
-
2018
- 2018-08-27 CN CN201821380544.5U patent/CN209247331U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112985759A (en) * | 2021-02-09 | 2021-06-18 | 北京工业大学 | Fluid-solid coupling experiment platform based on influence of flow velocity on cantilever flow transmission pipe |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 Termination date: 20200827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |