CN202547906U - Vibration isolation performance testing device for corrugated pipe - Google Patents
Vibration isolation performance testing device for corrugated pipe Download PDFInfo
- Publication number
- CN202547906U CN202547906U CN2012200159705U CN201220015970U CN202547906U CN 202547906 U CN202547906 U CN 202547906U CN 2012200159705 U CN2012200159705 U CN 2012200159705U CN 201220015970 U CN201220015970 U CN 201220015970U CN 202547906 U CN202547906 U CN 202547906U
- Authority
- CN
- China
- Prior art keywords
- vibration
- corrugated tube
- responder
- piping
- vibration end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a vibration isolation performance testing device for a corrugated pipe. A vibration end simulation device is used for inputting vibration at one end of the corrugated pipe, a response end simulation device is used for responding to the vibration at the other end of the corrugated pipe, the vibration end simulation device comprises a vibration end elastic part, a vibration end loader and a vibration exciter, the vibration end elastic part simulates elastic deformation of a vibration end pipe system, the vibration end loader is connected with the vibration end elastic part and simulates the quality of the vibration end pipe system, and the vibration exciter is connected with the vibration end loader. By the aid of the testing device, vibration isolation performance parameters of the corrugated pipe connected into the pipe system can be accurately measured to provide important evidence for the design and use of the vibration isolation corrugated pipe.
Description
Technical field
The utility model relates to anti-vibration performance test unit and the test method of corrugated tube simulation in piping, belongs to the mechanical strength test technical field.
Background technology
Corrugated tube is the cylinder-shaped thin wall wrinkle housing with a plurality of transverse waves, and it is connected in the piping system, mainly plays compensate for displacement and vibration damping.The anti-vibration performance parameter of corrugated tube is to weigh the important parameter of corrugated tube damping property.Corrugated tube anti-vibration performance parameter is relevant with the piping system that corrugated tube is inserted; Same corrugated tube is connected in series in the different piping systems; Its anti-vibration performance parameter is also different, therefore corrugated tube is carried out the anti-vibration performance test and has only and considered that whole tubing is just meaningful.At present, corrugated tube anti-vibration performance test is normally carried out single independently corrugated tube, and the piping system of not considering corrugated tube and being inserted is to the influence of corrugated tube anti-vibration performance parameter.Existing test method can not be simulated the corrugated tube practical working situation truly, can not obtain corrugated tube anti-vibration performance parameter exactly.
The utility model content
For in the test of corrugated tube anti-vibration performance, simulating the working environment of corrugated tube truly; The utility model patent provides a kind of corrugated tube anti-vibration performance test unit; Can simulate the piping system that corrugated tube connects, obtain real corrugated tube anti-vibration performance parameter (a grade drop shakes).
For realizing above-mentioned purpose; The device scheme of the utility model is: a kind of corrugated tube anti-vibration performance test unit; Comprise the vibration end analogue means that is used for the vibration end piping that links to each other with corrugated tube under the analog operation state, and the responder analogue means of the responder piping that links to each other with corrugated tube; The vibration end of the analog vibration end piping quality that the vibration end analogue means comprises the elastically-deformable vibration end elastic component of analog vibration end piping, link to each other with the vibration end elastic component adds carrier, adds the vibrator that carrier is connected with vibration end; The responder of the analog response end piping quality that the responder analogue means comprises the elastically-deformable responder elastic component of analog response end piping, link to each other with the responder elastic component adds carrier; Vibration end adds carrier and adds to be respectively equipped with on the carrier with responder and be used for and the corresponding mechanism that is fixedly coupled in corrugated tube two ends; Vibration end adds carrier and responder and adds and be equipped with sensor on the carrier, and said sensor is at least a in acceleration transducer, speed pickup, the displacement transducer.
According to the said corrugated tube anti-vibration performance of claim 1 test unit, it is characterized in that said elastic component is a spring.
Said bindiny mechanism is a flange.
Said vibrator is fixedly connected vibration through connecting rod and adds carrier.
The signal output part of acceleration transducer connects data acquisition unit through amplifier.
The beneficial effect of the utility model is: through the test unit and the test method thereof of the utility model; Can record exactly corrugated tube in the access piping system the anti-vibration performance parameter, these parameters are that the design of vibration isolation corrugated tube is used important basis is provided.
Description of drawings
Fig. 1 is the schematic piping diagram of the corrugated tube work of the utility model;
Fig. 2 is the test unit synoptic diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Corrugated tube anti-vibration performance test method may further comprise the steps,
1) uses the end inputted vibration of vibration end analogue means at corrugated tube; Use the responder analogue means to respond said vibration at an end of corrugated tube, the vibration end of the analog vibration end piping quality that said vibration end analogue means comprises the elastically-deformable vibration end elastic component of analog vibration end piping, link to each other with the vibration end elastic component adds carrier, adds the vibrator that carrier is connected with vibration end;
2) acceleration, speed or the displacement of measuring vibrations end analogue means and responder analogue means respectively is according to judging the corrugated tube anti-vibration performance with the measured value.
Obtained acceleration, speed or the displacement of vibration end and responder, compared just and can learn the corrugated tube anti-vibration performance.In order more definitely to embody anti-vibration performance, use formula: D=A
1/ A
2And L
D=20Lg (D) calculates grade drop that shakes of vibration end analogue means and responder analogue means, A
1Be vibration acceleration, speed or the displacement of responder analogue means, A
2Vibration acceleration, speed or displacement for the vibration end analogue means; Grade drop that shakes according to obtaining just can intuitive judgment corrugated tube anti-vibration performance.When calculating and differentiate, can also in a bandwidth range, measure grade drop that shakes under the different frequency, and judge the corrugated tube anti-vibration performance according to grade drop that on average shakes in the bandwidth range.
Provide a kind of embodiment of test unit below.
Actual ducted corrugated tube is as shown in Figure 1, two pipelines 2, be corrugated tube 1 between 3, and corrugated tube 1 connects pipeline 2 and following pipeline 3 through upper flange 21, lower flange 31 respectively.Last pipeline 2 connection devices 20, following pipeline 3 connects vibration source 30.The utility model is through a kind of simulation experiment system; As shown in Figure 2; Comprise the upper and lower substrate that laterally arranges; Be provided with vibrating device between the two substrates, vibrating device comprises last elastic component T1 and following elastic component T2 fixing respectively on the two substrates, is used for connecting respectively the two ends of corrugated tube to be tested 1 between the output terminal of upper and lower elastic component; Last elastic component comprises upper spring T1, and upper spring T1 one end is fixed on the upper substrate, and the other end is an output terminal, is fixed with additional mass dish M1; Following elastic component comprises lower spring T2, and lower spring T2 one end is fixed on the infrabasal plate, and the other end is an output terminal, is fixed with down additional mass dish M2.Upper and lower additional mass dish M1, M2 connect the two ends of waiting to test corrugated tube 1 through upper and lower flange 21,31 respectively.Upper and lower additional mass dish M1, M2 be last to be separately installed with upper and lower acceleration transducer 4,5, and the two sensors installation site is on same the straight line, and the signal output part of sensor connects data acquisition unit through signal amplifier.A vibrator 6 is installed on the infrabasal plate, and vibrator 6 is fixedly connected additional mass dish M2 down through connecting rod 7.
Because vibrator 6 is installed in the below, the following elastic component T2 of institute is vibration end elastic component and vibration end loaded member with following additional mass dish M2, and last elastic component T1 and last additional mass dish M1 are responder elastic component and responder loaded member.If vibrator 6 is connected with last additional mass dish M1, then vibration end and responder exchange.
Test concrete operations step is following:
1, corrugated tube test specimen and test unit are assembled, the whole test device vertically is fixed on the substrate;
2, degree of will speed up sensor 4 is connected with signal amplifier with 5, and signal amplifier is connected with data acquisition unit again;
3, data acquisition unit links to each other with computing machine;
4, vibrator 6 is placed on the substrate, links to each other vibrator center and piping additional mass (disk) central lines with piping additional mass M2 (disk) through connecting rod;
5, signal generator connects vibrator through power amplifier, the sine wave of signal generator output different frequency;
6, select suitable spring T1, T2 rigidity, the piping equal stiffness that its rigidity and corrugated tube are installed.The additional mass dish equates with the quality that piping is participated in vibration.Make the operating condition of test of corrugated tube consistent with the work operating mode, desirable 2,4 or 6 of spring T1, T2 evenly distribute;
7, be contained in the corrugated tube test specimen up and down the acceleration transducer on the ring flange of two ends the vibration acceleration signal that receives is passed to computing machine through data acquisition unit, get off signal record through data processing software.Obtain the anti-vibration performance parameter (a grade drop shakes) of corrugated tube through processing to vibration signal.
The mathematical principle of this test method is following:
Shake grade drop than D be defined as unit under the elasticity installation situation, at the ratio of the upper and lower vibratory response of elastic bearing (vibration isolator).
A in the formula
1The vibration acceleration of-corrugated tube upper end
A
2The vibration acceleration of-corrugated tube lower end
When representing, can get shake grade drop or be called transmission loss (Transmission loss) of acceleration with dB:
L
D＝20Lg(D)
This test can obtain grade drop that shakes of corrugated tube under different excitation frequencies.
The principle of the utility model: vertically be together in series corrugated tube through two groups of mass-spring systems up and down, the two-stage spring is separately fixed on the substrate up and down.On piping additional mass M1 and M2, vertically place an acceleration transducer respectively, through the signal of low frequency generator generation certain frequency scope, signal passes to vibrator via power amplifier and makes its vibration.Link to each other piping additional mass M2 with vibrator through a connecting rod, the signal that vibrator produces is delivered to piping additional mass M2 through connecting rod, makes the whole test system produce vibration.Measure response data by sensor-amplifier-portable signal processing instrument.Obtain the up and down acceleration oscillating curve at two ends of each Frequency point corrugated tube through acceleration transducer, obtain the Rms value of these two curves, the acceleration of each Frequency point grade drop that shakes with data processing software LabStar
Grade drop value L that shakes of each Frequency point
DiMultiply by the bandwidth value of this point, again the value behind these products summation, the total area under grade drop curve that just obtains shaking, the total area is divided by the total bandwidth grade drop L that on average shaken
D
Adopt acceleration transducer, can access the acceleration grade drop that shakes, in like manner, adopt speed pickup, the speed that can the access grade drop that shakes adopts displacement transducer, can access the displacement grade drop that shakes, because principle is identical with the measurement acceleration, repeats no more at this.
Below illustrate:
Vibrator applies excited by impact to piping additional mass M2 through connecting rod, excitation is passed to corrugated tube through piping additional mass M2, makes whole corrugated tube produce vibration.Produce the sinusoidal signal from 5Hz to 1000Hz through signal generator, signal passes to vibrator via power amplifier and makes its vibration.Measure response data by sensor-amplifier-portable signal processing instrument.Obtain each the Frequency point corrugated tube acceleration oscillating curve at two ends up and down in 5～1000Hz scope through acceleration transducer, obtain the peak averaging value of these two curves respectively, the speed of each Frequency point grade drop that shakes with data processing software
Grade drop value L that shakes of each Frequency point
DiMultiply by the bandwidth value of this point, again the value behind these products summation, the total area under grade drop curve that just obtains shaking, the total area is divided by the total bandwidth 1000 grade drop L that on average shaken
D
Claims (5)
1. a corrugated tube anti-vibration performance test unit is characterized in that, comprises the vibration end analogue means that is used for the vibration end piping that links to each other with corrugated tube under the analog operation state, and the responder analogue means of the responder piping that links to each other with corrugated tube;
The vibration end of the analog vibration end piping quality that the vibration end analogue means comprises the elastically-deformable vibration end elastic component of analog vibration end piping, link to each other with the vibration end elastic component adds carrier, adds the vibrator that carrier is connected with vibration end; The responder of the analog response end piping quality that the responder analogue means comprises the elastically-deformable responder elastic component of analog response end piping, link to each other with the responder elastic component adds carrier; Vibration end adds carrier and adds to be respectively equipped with on the carrier with responder and be used for and the corresponding mechanism that is fixedly coupled in corrugated tube two ends; Vibration end adds carrier and responder and adds and be equipped with sensor on the carrier, and said sensor is at least a in acceleration transducer, speed pickup, the displacement transducer.
2. according to the said corrugated tube anti-vibration performance of claim 1 test unit, it is characterized in that said elastic component is a spring.
3. according to the said corrugated tube anti-vibration performance of claim 2 test unit, it is characterized in that said bindiny mechanism is a flange.
4. according to the said corrugated tube anti-vibration performance of claim 1 test unit, it is characterized in that said vibrator is fixedly connected vibration through connecting rod and adds carrier.
5. according to the said corrugated tube anti-vibration performance of claim 1 test unit, it is characterized in that the signal output part of acceleration transducer connects data acquisition unit through amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200159705U CN202547906U (en) | 2012-01-15 | 2012-01-15 | Vibration isolation performance testing device for corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200159705U CN202547906U (en) | 2012-01-15 | 2012-01-15 | Vibration isolation performance testing device for corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202547906U true CN202547906U (en) | 2012-11-21 |
Family
ID=47168524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200159705U Withdrawn - After Issue CN202547906U (en) | 2012-01-15 | 2012-01-15 | Vibration isolation performance testing device for corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202547906U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680214A (en) * | 2012-01-15 | 2012-09-19 | 河南科技大学 | Vibration isolation performance test device and method for corrugated pipe |
| CN105424350A (en) * | 2015-12-19 | 2016-03-23 | 湖南科技大学 | Method and system for thin-wall part modal testing based on machine vision |
| CN109974952A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of device for pipe vibration test |
| CN113514216A (en) * | 2021-06-11 | 2021-10-19 | 北京航天动力研究所 | Device and method for realizing dry-wet modal test of metal corrugated pipe assembly |
-
2012
- 2012-01-15 CN CN2012200159705U patent/CN202547906U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680214A (en) * | 2012-01-15 | 2012-09-19 | 河南科技大学 | Vibration isolation performance test device and method for corrugated pipe |
| CN102680214B (en) * | 2012-01-15 | 2015-01-07 | 河南科技大学 | Vibration isolation performance test device and method for corrugated pipe |
| CN105424350A (en) * | 2015-12-19 | 2016-03-23 | 湖南科技大学 | Method and system for thin-wall part modal testing based on machine vision |
| CN105424350B (en) * | 2015-12-19 | 2017-10-31 | 湖南科技大学 | Thin-wall part mode testing method and system based on machine vision |
| CN109974952A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of device for pipe vibration test |
| CN113514216A (en) * | 2021-06-11 | 2021-10-19 | 北京航天动力研究所 | Device and method for realizing dry-wet modal test of metal corrugated pipe assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102692331B (en) | Indirect testing method for equipment to excitation load of hull structure under vertical unbalance excitation force | |
| CN102221401B (en) | Vibration test stand and testing method for vibration sensor | |
| CN102680214B (en) | Vibration isolation performance test device and method for corrugated pipe | |
| CN101907523B (en) | Rigid body mode testing method for powertrain suspension system under loading condition | |
| CN104897354A (en) | Testing device and testing method for aircraft engine vibration isolator rigidity and damping | |
| CN202547906U (en) | Vibration isolation performance testing device for corrugated pipe | |
| CN101949731B (en) | Method for testing high-order frequency of large wind-power blades | |
| CN111537170B (en) | Dynamic stiffness testing method for servo actuator | |
| CN102680270B (en) | Indirect measurement method for ship excitation load caused by equipment under combined effect of unbalanced excitation force and unbalanced bending moment | |
| CN104792450B (en) | A kind of indirect measurement method of equipment to installation pedestal exciting force | |
| CN103344423B (en) | Micro-vibration vibration isolator damping parameter and stiffness parameters measurement mechanism | |
| CN102840968B (en) | Detection device and detection method for wide-range vibration amplitude of blade of aviation engine | |
| CN113740042B (en) | Device and method for testing vibration contact characteristic of gas turbine blade damper system | |
| CN201331377Y (en) | Mechanical impedance testboard for vibration isolator | |
| CN109815553A (en) | A kind of evaluation method and system of suspension system | |
| CN201819802U (en) | Device for recognizing rigid model parameters of power assembly | |
| CN106908205A (en) | A kind of test device of engine mounting dynamic stiffness | |
| CN105043700A (en) | Electronic device modal test system and method, and traveling wave tube slow wave structure modal test system | |
| CN202101831U (en) | Vibration testing bench | |
| CN105043696A (en) | Device for testing rigidity and damping of aircraft engine vibration isolator | |
| CN102818686B (en) | Grid-control TWT metal grid mesh Modal Experimental Method | |
| CN210271424U (en) | Self-testing device for modal analysis | |
| CN102735373A (en) | Indirect measurement method of transmission force of vibration isolator | |
| CN102706527B (en) | Quantitative test method for endogenous excitation load of equipment under joint action of unbalanced turbulence force and unbalanced turbulence moment | |
| JPWO2019093294A1 (en) | Estimator, estimation method and computer program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20150107 |
|
| RGAV | Abandon patent right to avoid regrant |