CN110441015A - A kind of underwater exciting combination unit - Google Patents
A kind of underwater exciting combination unit Download PDFInfo
- Publication number
- CN110441015A CN110441015A CN201910653161.3A CN201910653161A CN110441015A CN 110441015 A CN110441015 A CN 110441015A CN 201910653161 A CN201910653161 A CN 201910653161A CN 110441015 A CN110441015 A CN 110441015A
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- Prior art keywords
- device pressure
- exciting
- underwater
- vibration excitor
- sealing plate
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- 238000012360 testing method Methods 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 210000004907 gland Anatomy 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000005284 excitation Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention provides a kind of underwater exciting combination unit, including vibration excitor, exciting rod, spring rope, device pressure hull, device pressure resistance sealing plate and cable；Wherein, device pressure hull is fixed on unit under test, device pressure resistance sealing plate is mounted on one closed space of formation in the opening of device pressure hull, vibration excitor is located in closed space, and it is flexibly connected by spring rope and device pressure hull, exciting rod one end is fixed on the head of vibration excitor, and the other end is close to unit under test, and cable passes through device pressure hull or device pressure resistance sealing plate is connect with vibration excitor.The present invention is combined the unit when naval vessel is in submerged condition, makes full use of exterior space, is selected ideal exciting position to carry out the underwater vibration characteristics test of model, is improved the convenience of test macro debugging and the accuracy of test result.
Description
Technical field
The invention belongs to ship vibration noise testing technical fields, and in particular to a kind of underwater exciting combination unit.
Background technique
Naval vessel vibration and noise reducing has received widespread attention and payes attention at present, since naval vessel internal unit is numerous, pipeline is complicated,
Larger by the development ship vibration specificity analysis difficulty such as theoretical, calculating, therefore, experimental test is to carry out ship vibration characteristic to grind
The important means studied carefully.
In actually carrying out ship vibration characteristic test work, it is important using the architectural characteristic on vibration excitor test naval vessel
One of test job.But this work is usually carried out in the case where pier state is sat on naval vessel, since there are attached with outside in dry state for structure
Even water state flowering structure mode differs greatly, therefore test result can not directly react the vibration characteristics in real navigation.For
For model measurement, vibration excitor is also generally disposed inside model, but internal usually since the free time limits, can not be according to test need
Choose at random exciting position.Therefore, for the ease of model under water when carry out exciting test, study naval vessel under time of day
Vibration characteristics, developments for the work of naval vessel vibration and noise reducing provide more accurate data and support, propose it is a kind of under water
Exciting combination unit is tested under water to assist carrying out model.
Summary of the invention
The purpose of the present invention is to provide a kind of underwater excitings to combine the unit, sufficiently sharp when naval vessel is in submerged condition
With exterior space, selects ideal exciting position to carry out the underwater vibration characteristics test of model, improve the convenient of test macro debugging
The accuracy of property and test result.
Realize that technical scheme is as follows:
A kind of underwater exciting combination unit, including vibration excitor, exciting rod, spring rope, device pressure hull, the resistance to press seal of device
Plate and cable；Wherein,
Described device pressure hull is fixed on unit under test, and described device pressure resistance sealing plate is mounted on device pressure hull
A closed space is formed in opening, the vibration excitor is located in the closed space, and resistance to by spring rope and device
The flexible connection of pressure shell body, described exciting rod one end are fixed on the head of vibration excitor, and the other end is worn close to unit under test, the cable
It crosses device pressure hull or device pressure resistance sealing plate is connect with vibration excitor.
Further, device pressure resistance sealing plate of the present invention is mounted in the opening of device pressure hull by fastening bolt
Form a closed space.
Further, cable of the present invention is pierced by the position of device pressure hull or device pressure resistance sealing plate and is additionally provided with electricity
Cable stuffing-box.
Beneficial effect
First, vibration excitor, exciting rod, spring rope can be according to the outer of unit under test in the present invention underwater exciting combination unit
Flexibly adjustment is realized at shape, position, adapts to the needs of various underwater test jobs.
Second, the underwater exciting combination unit of the present invention can be selected according to unit under test outer dimension and vibration excitor excitation angle
Different sizes realizes the exciting of different angle；The underwater sealing to exciting device can be realized by underwater pressure-resistant apparatus, and right
Test macro, unit under test influence smaller.
Third, the present invention can avoid the problem of naval vessel inner space anxiety, and ideal position is selected to open outside model
Exciting test is opened up, can be used for exciting under naval ship water and test, avoid land test result and the excessive situation of actual variance.
4th, the underwater exciting combination unit design of the present invention while realizing underwater units exciting, has higher tune
Examination property and maintenanceability, can realize the adjustment of exciting test macro and the tune of test position on the basis of not disassembly model
Whole, pattern is reasonable, technology difficulty is small, mounting means is simple, easy to maintenance, securely and reliably.
Detailed description of the invention
Fig. 1 is a kind of underwater exciting combination unit by the schematic diagram of exciting device.
Wherein, 1- vibration excitor, 2- exciting rod, 3- spring rope, 4- device pressure hull, 5- unit under test, 6- device pressure resistance
Sealing plate, 7- cable, 8- cable gland, 9- fastening bolt.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.
A kind of underwater exciting combination unit of the embodiment of the present invention, is made of exciting device and underwater pressure-resistant apparatus two parts,
Wherein exciting device with lower component by being formed: vibration excitor 1, exciting rod 2, spring rope 3, cable 7, underwater pressure-resistant apparatus is by with lower part
Part composition: device pressure hull 4, device pressure resistance sealing plate 6, cable gland 8, fastening bolt 9.Wherein, described device pneumatic shell
Body 4 is fixed on unit under test 5, and described device pressure resistance sealing plate 6 is mounted on the opening of device pressure hull 4 by fastening bolt 9
The underwater sealing to exciting device is realized in one closed space of upper formation；The vibration excitor 1 is located at the closed space
It is interior, and be flexibly connected by spring rope 3 and device pressure hull 4, described 2 one end of exciting rod is fixed on the head of vibration excitor 1, separately
One end is close to unit under test 5, and the cable 7 passes through device pressure hull 4 or device pressure resistance sealing plate 6 is connect with vibration excitor 1, cable
7 other end connects water surface test macro, and the position that the cable 7 is pierced by is equipped with cable gland 8.
Vibration excitor of the embodiment of the present invention realizes water by the sealing space that device pressure hull and device pressure resistance sealing plate are formed
Lower sealing, cable pass through outside the orifice to device on pressure-resistant sealing plate, are connected with water surface test macro.It can be according to unit under test
Position select suitable exciting pole length and the fixed position of spring rope, guarantee exciting rod between unit under test at a distance from exciting
In device impulse stroke.It can be changed according to unit under test shape by the length of knob and four spring ropes on adjusting vibration exciter
The angle of exciting rod realizes the vertical excitation of exciting rod.
Vibration excitor 1 can test needs according to exciting in the embodiment of the present invention, select suitable vibration excitor model.
Exciting rod 2 can select suitable according to unit under test outer dimension and vibration excitor excitation angle in the embodiment of the present invention
Length, it is easy to adjust.
Spring rope 3 establishes the flexible connection between vibration excitor 1 and device pressure hull 4 in the embodiment of the present invention, reduces vibration
Influence to test；Different sizes can be selected according to unit under test outer dimension and vibration excitor excitation angle, realize different angles
The exciting of degree, it is adaptable.
Device pressure hull 4 is the main structure that device bears pressure under water in the embodiment of the present invention, can be according to model
Pressure-resistant demand selection different-thickness, material etc. under water, can select different sizes according to the size of vibration excitor, exciting rod.
The device of that embodiment of the invention pressure resistance sealing plate 6 is sealing when device is installed, the sealing inside realization device；It can basis
Pressure-resistant demand selects different-thickness, material etc. to model under water, and different rulers can be selected according to the size of vibration excitor, exciting rod
Very little, after can more conveniently realizing test macro installation, debugging sealing.
Cable of the embodiment of the present invention 7 establishes contacting between excitation system and signal, test；It can be according to signal and test needs
Different types is selected, different cable lengths can be selected away from water surface distance according to model.
Aperture between sealing plate and cable is sealed by cable gland of the embodiment of the present invention 8, can be according to cable model, envelope
Board size selects different models.
The course of work of the underwater exciting combination unit of the embodiment of the present invention are as follows:
First, according to the needs of measured position, device pressure hull 4 is fixed by welding in 5 surface of unit under test and is closed
It sets right position.
Second, exciting rod 2 is fixed on 1 head of vibration excitor, is adjusted exciting rod 2 to conjunction by the knob on vibration excitor 1
Suitable angle.
Third lies in 1 pedestal quadrangle of vibration excitor with four spring ropes 3, vibration excitor 1 is lifted in device pressure hull 4
On wall, control and keep suitably distance between exciting rod and unit under test (in vibration excitor impulse stroke).
4th, cable 7 passes through 6 rear interface portion position of device pressure resistance sealing plate and is sealed with cable gland 8.
5th, device sealing plate 6 is fixed with fastening bolt 9 and device pressure hull 4, interface position with underwater sealing glue do into
The sealing of one step.
6th, after completing test macro debugging, combination unit can be lauched together with unit under test, carried out underwater exciting and surveyed
Examination.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (3)
1. a kind of underwater exciting combination unit, which is characterized in that including vibration excitor (1), exciting rod (2), spring rope (3), device
Pressure hull (4), device pressure resistance sealing plate (6) and cable (7)；Wherein,
Described device pressure hull (4) is fixed on unit under test (5), and described device pressure resistance sealing plate (6) is mounted on device pressure resistance
A closed space is formed in the opening of shell (4), the vibration excitor (1) is located in the closed space, and passes through bullet
Spring rope (3) and device pressure hull (4) are flexibly connected, and described exciting rod (2) one end is fixed on the head of vibration excitor (1), another
It holds close to unit under test (5), the cable (7) passes through device pressure hull (4) or device pressure resistance sealing plate (6) and vibration excitor (1)
Connection.
2. underwater exciting combination unit according to claim 1, which is characterized in that described device pressure resistance sealing plate (6) passes through tight
Fixing bolt (9) is mounted on one closed space of formation in the opening of device pressure hull (4).
3. underwater exciting combination unit according to claim 1, which is characterized in that the cable (7) is pierced by device pneumatic shell
Cable gland (8) is additionally provided on the position of body (4) or device pressure resistance sealing plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910653161.3A CN110441015A (en) | 2019-07-19 | 2019-07-19 | A kind of underwater exciting combination unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910653161.3A CN110441015A (en) | 2019-07-19 | 2019-07-19 | A kind of underwater exciting combination unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110441015A true CN110441015A (en) | 2019-11-12 |
Family
ID=68430870
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910653161.3A Pending CN110441015A (en) | 2019-07-19 | 2019-07-19 | A kind of underwater exciting combination unit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478331A (en) * | 2016-01-21 | 2016-04-13 | 河北科技大学 | Mechanical vibration platform with various vibration modes |
| CN205209741U (en) * | 2015-11-23 | 2016-05-04 | 中国舰船研究设计中心 | Submerged structure exciter test device |
| CN105784302A (en) * | 2016-02-02 | 2016-07-20 | 华晨汽车集团控股有限公司 | Automobile modal testing apparatus and method |
| CN107345856A (en) * | 2017-09-07 | 2017-11-14 | 中国船舶重工集团公司第七〇九研究所 | A kind of low dynamic stiffness for rotary axis longitudinally loads exciting device |
| CN210664963U (en) * | 2019-07-19 | 2020-06-02 | 中国船舶重工集团公司第七一九研究所 | Underwater excitation combination device |
-
2019
- 2019-07-19 CN CN201910653161.3A patent/CN110441015A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205209741U (en) * | 2015-11-23 | 2016-05-04 | 中国舰船研究设计中心 | Submerged structure exciter test device |
| CN105478331A (en) * | 2016-01-21 | 2016-04-13 | 河北科技大学 | Mechanical vibration platform with various vibration modes |
| CN105784302A (en) * | 2016-02-02 | 2016-07-20 | 华晨汽车集团控股有限公司 | Automobile modal testing apparatus and method |
| CN107345856A (en) * | 2017-09-07 | 2017-11-14 | 中国船舶重工集团公司第七〇九研究所 | A kind of low dynamic stiffness for rotary axis longitudinally loads exciting device |
| CN210664963U (en) * | 2019-07-19 | 2020-06-02 | 中国船舶重工集团公司第七一九研究所 | Underwater excitation combination device |
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