CN108414205A - Adjustable experimental provision for studying inducer axial distance - Google Patents
Adjustable experimental provision for studying inducer axial distance Download PDFInfo
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- CN108414205A CN108414205A CN201810366018.1A CN201810366018A CN108414205A CN 108414205 A CN108414205 A CN 108414205A CN 201810366018 A CN201810366018 A CN 201810366018A CN 108414205 A CN108414205 A CN 108414205A
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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
- G01M13/00—Testing of machine parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a kind of adjustable experimental provisions for studying inducer axial distance.Move axially the change for realizing axial distance between inducer and impeller between pipe I, axial movement pipe II and fixing pipe by convex block and sliding slot prismatic pair, feed arrangement, push-pull rod and spring are arranged in cavity, push-pull rod passes through spring, push-pull rod and both ends of the spring to be connected to axial movement I front end of pipe and feed arrangement；Supersonic generator is installed on axial movement I outward flange of pipe；Ultrasonic displacement signal receiver is installed on fixing pipe outward flange；Fixing pipe rear end is equipped with pressure pulsation sensor at impeller inlet.The present invention can be used to detect the axial distance of regulating device variation, can detect the purpose of the axially different cavitation situation of change under in real time；Influence of the axial distance to cavitation effect for studying inducer relative to impeller, while adjusting axial distance is not only inaccurate manually but also increases significantly unnecessary dismounting working hour.
Description
Technical field
The present invention relates to a kind of inducer experimental provision and methods, more particularly, to a kind of for studying induction wheel shaft
To the adjustable experimental provision of distance.
Background technology
With industrial expansions such as aerospace flight technology and petrochemical industry, centrifugal pump is increasingly to high speed and high pressure and efficient development.
So that pump is generated higher single-stage lift, must just improve rotating speed and higher just is proposed to the cavitation performance of pump after rotating speed improves
Requirement.The method generally used at present is to increase inducer before centrifugal wheel to ensure that pump assembly can have superior cavitation
Performance.Inducer belongs to aial flow impeller, can work under a degree of cavitation state, generate lift increase from
The energy of heart wheel entrance, to ensure that centrifugal wheel can without cavitation be run.For centrifugal pump, the axis between inducer and impeller
It is very crucial to distance.When axial distance is smaller, the interference effect between inducer and impeller is stronger, and the fluidised form in impeller may
It will produce larger fluctuation；When axial distance is excessive, the axial dimension of complete machine can be long, not compact.In recent years, about axial phase
Influence to position to various strength mechanical performances has been proved exist by numerical simulation and experiment.And in traditional experiment
When studying inducer axial distance, need to adjusting axial distance when changing axial distance every time manually, not only inaccurate substantial increase again be not
Necessary dismounting working hour reduces and also results in the decline of leakproofness after working efficiency repeated disassembled and assembled and make the failure of an experiment.And it passes
System is larger by Effect of Rotation for the main applying vibration acceleration transducer of the experiment of inducer cavitation performance.
Invention content
Based on this, the present invention proposes a kind of adjustable experimental provision for studying inducer axial distance, uses set
Pipe structure, ultrasound axial distance, pressure fluctuation test and error compensation and precision Regulating study inducer are relative to impeller
Axial distance to cavitation influential effect.
The present invention is in view of the above-mentioned problems, using following technical scheme：
One, a kind of adjustable experimental provision for studying inducer axial distance：
Including inducer, impeller and shaft, shrunk-on disc is fixed in shaft, further includes axial movement pipe I, axial movement pipe
II, fixing pipe, feed arrangement, push-pull rod, spring, supersonic generator, ultrasonic displacement signal receiver, pressure fluctuation sensing
Device, convex block I, sliding slot I, convex block II and sliding slot II；I front end of pipe is moved axially by thread set in the screw thread of inducer rear end face
Kong Zhong, I rear end of axial movement pipe suit move axially in II front end of pipe, and II rear end of axial movement pipe is sleeved on fixing pipe front end
In, fixing pipe rear end is fixedly and coaxially connected with roller end；The both sides of axial movement I peripheral surface of pipe are respectively and fixedly provided with convex block I, axial
The both sides of II inner surface of moving tube are provided with the sliding slot I with the cooperation installation of convex block I, and it is axial arranged that sliding slot I is axially moveable pipe II, convex
Block I moves freely after being flush-mounted in sliding slot I so that being socketed between axial movement pipe I and axial movement pipe II along axis；It is axial to move
The both sides of II peripheral surface of dynamic pipe are respectively and fixedly provided with convex block II, and the both sides of fixed pipe internal surface are provided with the sliding slot with the cooperation installation of convex block II
II, sliding slot II is axial arranged along fixing pipe, and convex block II is flush-mounted in sliding slot I so that being socketed between axial movement pipe II and fixing pipe
It is moved freely afterwards along axis；So that by between convex block and sliding slot between axial movement pipe I, axial movement pipe II and fixing pipe
Prismatic pair realizes the change of axial distance between inducer and impeller；Feed arrangement, push-pull rod and spring are arranged in axial shifting
Dynamic pipe I, axial movement pipe II and fixing pipe socket are formed by cavity, and feed arrangement is fixed in fixed tube cavity, bullet
Spring one end is fixedly welded on axial movement I front end of pipe (i.e. closed front end inner face), and the other end is fixedly welded on feeding dress
It sets, feed arrangement is only that spring plays support fixed function herein；Push-pull rod passes through spring, and one end is fixedly welded on axial movement
I front end of pipe (i.e. closed front end inner face), the other end is axially movably attached to feed arrangement；Move axially I front end of pipe
Equipped with outward flange, supersonic generator is installed on the step surface of outer flange face rear end；Fixing pipe rear end is equipped with outward flange,
Ultrasonic displacement signal receiver is installed on the step surface of outer flange face forward end；It is installed at impeller inlet fixing pipe rear end
There is pressure pulsation sensor.
Axial movement pipe I, axial movement pipe II and the fixed pipe diameter is sequentially increased.
The feed arrangement is fixed to fixed inside pipe wall by the support arm that surrounding is stretched out so that feed arrangement and fixing pipe
It is fixedly connected.
It is formed and is slidably matched between the feed arrangement and push-pull rod, feed arrangement driving push-pull rod pushes away axially forward
Into or retract backward, to reach the purpose of inducer axial position for adjusting and being connected with push-pull rod.
Axial direction is mainly constituted by axial movement pipe I, axial movement pipe II, fixing pipe, feed arrangement, push-pull rod and spring
Apart from adjustment module.
The pressure pulsation sensor is using Germany WIKA pressure pulsation sensors, model S-10, precision for ±
0.25%, the response time is less than or equal to 1ms, 0~0.4MPa of range.
The feed arrangement and push-pull rod use using model XZLNG25 it is green how source push rod feed arrangement, stroke model
50mm is enclosed, feeding mode rack pinion engagement type bears load 9.8N.It is revolved by gear set by way of gear engaged transmission
Turn the change in direction to adjust the advance and retrogressing of push-pull rod.There is rack-shaped mechanism in push-pull rod one end, contains in feed arrangement with teeth
Wheel group, the rack of push-pull rod are engaged with the gear set in feed arrangement.Gear in feed arrangement rotate clockwise will drive with
Its push-pull rod engaged is pushed ahead, and the push-pull rod that rotation engages drive counterclockwise of the gear in feed arrangement is backward
It moves back.
Two, a kind of test method for studying inducer axial distance：
Including error compensation module, axial distance adjustment module and error precision adjustment module；Wherein error compensation module
It is software computing module with error precision adjustment module, axial distance adjustment module is mechanical device module.
First, the axial distance value between inducer and impeller after required adjustment, error are inputted to error compensation module
Compensating module compensates the theoretical axial distance value of input according to fit-up gap and pipeline distance, obtains for adjusting axial direction
Theoretical axial distance value between moving tube I and the outward flange of fixing pipe；
Then, the theoretical axial distance value after compensation be input in the form of pulse signal axial distance adjustment module into
To device, by the different amplitude of institute's input signal control feed arrangement push-pull rod is moved axially so that adjust inducer with
Axial distance between impeller；
Due to the impact of the fluid in rotary course, axial movement pipe I can be fluctuated centainly, and ultrasound displacement is used
Method do not influence the flow field of itself and the real time measure axial distance and can be fed back again.Then, pass through supersonic generator
And ultrasonic displacement signal receiver measures the practical axial distance value between axial movement pipe I and the outward flange of fixing pipe, it will
Practical axial direction distance value is compared with the theoretical axial distance value after compensation obtains error precision as a result, feeding back axial distance simultaneously
It is included in real-time cavitation situation.
The multilevel iudge mode of error precision result is carried out by error precision adjustment module it is self-defined, with reach output
The purpose of the experimental result of different accuracy.
If error is when within 5 percent after comparing, then it is assumed that error precision is met the requirements.
The technical effects of the invention are that：
The present invention has carried out accurately inducer axial distance in the case of realizing without repeated disassembled and assembled experimental provision
It adjusts；The feedback that real-time axial distance is realized using the method for ultrasound distance ensure that the reliable of real-time experimental data
Property；It can be to avoid rotation to the survey as this kind of traditional sensors of vibration acceleration sensor using pressure fluctuation detection cavitation signal
Amount influences；Error precision is independently defined by error precision adjustment module, to reach the experiment knot of output different accuracy
The purpose of fruit.
The present invention can be used to detect the axial distance of regulating device variation, can detect the axially different vapour under in real time
Lose the purpose of situation of change；Influence of the axial distance to cavitation effect for studying inducer relative to impeller, while manually
Adjusting axial distance is not only inaccurate but also increases significantly unnecessary dismounting working hour.
Description of the drawings
Fig. 1 is the half-sectional structure chart of experimental provision；
Fig. 2 is axial distance regulating device partial, detailed view；
Fig. 3 is axial distance regulating device Structure explosion diagram；
Fig. 4 is experimental provision overall effect figure.
Fig. 5 is that axial distance is adjusted and test method flow diagram；
In figure：Inducer 1, impeller 2, shaft 3, axial movement pipe I 4, axial movement pipe II 5, fixing pipe 6, feed arrangement
7, push-pull rod 8, spring 9, supersonic generator 10, ultrasonic displacement signal receiver 11, pressure pulsation sensor 12, convex block I
13, sliding slot I 14, convex block II 15, sliding slot II 16；Error compensation module 17, axial distance adjustment module 18, error precision adjust mould
Block 19.
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 4, inducer part of the invention includes inducer 1, impeller 2 and shaft 3, is fixed in shaft 3
Shrunk-on disc 2, the size and the screw thread at I 4 top of axial movement pipe of inducer 1 match.The size of fixing pipe 6 and shaft 3
Size matches.The size of axial distance regulating device entirety will minimize, and cannot be had an impact to former flow field.
As shown in Figure 1, the present invention specific implementation be additionally arranged axial movement pipe I 4, axial movement pipe II 5, fixing pipe 6, into
To device 7, push-pull rod 8, spring 9, supersonic generator 10, ultrasonic displacement signal receiver 11, pressure pulsation sensor 12,
Convex block I 13, sliding slot I 14, convex block II 15 and sliding slot II 16；Mainly by axial movement pipe I 4, axial movement pipe II 5, fixing pipe 6,
Feed arrangement 7, push-pull rod 8 and spring 9 constitute axial distance adjustment module 18.The closing of I 4 front end of axial movement pipe passes through screw thread
It is set in the threaded hole of 1 rear end face of inducer, I 4 rear end of axial movement pipe suit moves axially in II 5 front end of pipe, axial
II 5 rear end of moving tube is sleeved in 6 front end of fixing pipe, and 6 rear end of fixing pipe is fixedly and coaxially connected with 3 end of shaft.
As shown in Figures 2 and 3, the both sides of axial movement I 4 peripheral surface of pipe are respectively and fixedly provided with convex block I 13, move axially pipe II 5
The both sides of inner surface are provided with the sliding slot I 14 with the cooperation installation of convex block I 13, and it is axial arranged that sliding slot I 14 is axially moveable pipe II 5, convex
Block I 13 moves freely after being flush-mounted in sliding slot I 14 so that being socketed between axial movement pipe I 4 and axial movement pipe II 5 along axis；
The both sides of axial movement II 5 peripheral surface of pipe are respectively and fixedly provided with convex block II 15, and the both sides of 6 inner surface of fixing pipe are provided with matches with convex block II 15
The sliding slot II 16 of installation is closed, sliding slot II 16 is axial arranged along fixing pipe 6, and convex block II 15 is flush-mounted in sliding slot I 14 so that axial move
It is dynamic to be moved freely along axis after socket between pipe II 5 and fixing pipe 6；It is final to make axial movement pipe I 4, II 5 and of axial movement pipe
Mutually socket is axial free to slide between fixing pipe 6 is two neighboring so that axial movement pipe I 4 moves axially pipe II 5 and fixes
The change of axial distance between inducer 1 and impeller 2 is realized between pipe 6 by the prismatic pair between convex block and sliding slot.
As shown in Figure 1-Figure 3, feed arrangement 7, push-pull rod 8 and spring 9 are arranged in axial movement pipe I 4, axial movement pipe
II 5 and the socket of fixing pipe 6 be formed by cavity, feed arrangement 7 is fixed in 6 inner cavity of fixing pipe, and the welding of 9 one end of spring is solid
Due to axial movement I 4 front end of pipe (i.e. closed front end inner face), the other end is fixedly welded on feed arrangement 7, feeds herein
7, device plays support fixed function for spring 9；Before push-pull rod 8 passes through spring 9, one end to be fixedly welded on axial movement pipe I 4
End (i.e. closed front end inner face), the other end is axially movably attached to feed arrangement 7.
As shown in Figure 1-Figure 3, I 4 front end of axial movement pipe is equipped with outward flange, pacifies on the step surface of outer flange face rear end
Equipped with supersonic generator 10,10 tranmitting frequency of supersonic generator is more than 40KHZ to avoid ultrasonic cavitation effect is generated；Gu
6 rear end of fixed tube is equipped with outward flange, and ultrasonic displacement signal receiver 11 is equipped on the step surface of outer flange face forward end, surpasses
Sound wave displacement signal receiver 11 receives the signal that supersonic generator 10 emits, the original influenced on ultrasonic frequency using displacement
Reason measures the axial displacement value between axial movement pipe I 4 and fixing pipe 6；Pressure pulsation sensor 12 in the prior art is pacified
Mounted in inner wall of the pipe, and the present invention is equipped with pressure pulsation sensor 12, pressure arteries and veins in 6 rear end of fixing pipe in 2 entrance of impeller
For dynamic sensor 12 between fixing pipe 6 and impeller 2, detecting cavitation signal using pressure pulsation sensor 12 can be to avoid rotation
On the measurement influence as this kind of traditional sensors of vibration acceleration sensor, the axially different vapour under is detected in real time to play
Lose the purpose of situation of change.
In specific implementation, as shown in figure 4, axial movement pipe I 4, axial movement pipe II 5 and 6 diameter of fixing pipe are sequentially increased,
The intracavity diameter for moving axially pipe I 4 is matched with the outer diameter of axial movement pipe II 5.Move axially the intracavity diameter of pipe II 5
It is matched with the outer diameter of fixing pipe 6.I 13 size of convex block will be matched with sliding slot I 14.The size of convex block II 15
It to be matched with sliding slot II 16.Contact surface when axial movement pipe I 4, axial movement pipe II 5 and 6 three of fixing pipe are mutually socketed
Just there is oil lubrication sealing, it is ensured that three directly can be free to slide.I 15 size of electromagnet will be with electromagnetic propeller I 14
Size match.Feed arrangement 7, the size of push-pull rod 8 and spring 9 and axial distance regulating device cavity size
Match.
Feed arrangement 7 is fixed to 6 inner wall of fixing pipe by the support arm that surrounding is stretched out so that feed arrangement 7 and fixing pipe 6 are solid
Fixed connection.
It is formed and is slidably matched between feed arrangement 7 and push-pull rod 8, feed arrangement 7 drives push-pull rod 8 to promote axially forward
Or retract backward, to reach the purpose for adjusting 1 axial position of inducer being connected with push-pull rod 8, and then adjusts inducer 1 and turn
The change of axial distance between 3 end of axis.Push-pull rod 8 in moving process, spring 9 with axial movement pipe I 4 axial movement and
The pulling force or thrust that the elastic-restoring force that stretching or compression generate is moved axially with driving axial moving tube I 4 mutually balance, and make
It obtains 1 axial movement process of inducer steadily and fixes 1 present position of inducer after mobile and do not move axially.
In specific implementation, pressure pulsation sensor 12 is using Germany's WIKA pressure pulsation sensors, model S-10, precision
± 0.25%, the response time is less than or equal to 1ms, 0~0.4MPa of range.Feed arrangement 7 and push-pull rod 8 use model
XZLNG25 it is green how source push rod feed arrangement, stroke range 50mm, feeding mode rack pinion engagement type bears load 9.8N.
As shown in figure 5, specific implementation process of the present invention is：
First, the inducer 1 after required adjustment and the axial distance value between impeller 2 are inputted to error compensation module 17,
Error compensation module 17 compensates the theoretical axial distance value of input according to fit-up gap and pipeline distance, obtains for adjusting
Nodal axisn is to the theoretical axial distance value between moving tube I 4 and the outward flange of fixing pipe 6；
Then, the theoretical axial distance value after compensation is input to axial distance adjustment module 18 in the form of pulse signal
Feed arrangement 7 is adjusted by the different amplitude of institute's input signal controls feed arrangement 7 so that push-pull rod 8 moves axially and is lured
Axial distance between guide wheel 1 and impeller 2；
Then, axial movement pipe I 4 is measured by supersonic generator 10 and ultrasonic displacement signal receiver 11 and fixed
Practical axial distance value between the outward flange of pipe 6 carries out practical axial distance value with the theoretical axial distance value after compensation
Compare and obtains error precision as a result, feeding back axial distance and being included in real-time cavitation situation.
In specific implementation, if error is when within 5 percent after relatively, then it is assumed that error precision is met the requirements.
Axial distance specific embodiment is as follows：
Actually required adjusting inducer and impeller inlet distance are 50mm, adjustable distance be axial-adjustment unit away from
From.Pipeline length is 10mm, rigging error 2mm in actually required total distance, therefore can obtain required adjustable range and be
38mm。
After adjusting practical adjustments distance, and the actual measurement being added with pipeline and rigging error are measured through ultrasonic displacement sensor
Total distance is 48mm, and the error with required axial distance is 2%, meets experimental precision error requirements and is completed after device adjusting
This experimental data it is reliably effective.Table specific as follows：
Claims (7)
1. a kind of adjustable experimental provision for studying inducer axial distance, including inducer (1), impeller (2) and shaft
(3), shrunk-on disc (2) is fixed in shaft (3), it is characterised in that：Including axial movement pipe I (4), move axially pipe II (5), solid
Fixed tube (6), feed arrangement (7), push-pull rod (8), spring (9), supersonic generator (10), ultrasonic displacement signal receiver
(11), pressure pulsation sensor (12), convex block I (13), sliding slot I (14), convex block II (15) and sliding slot II (16)；Axial movement pipe
By thread set in the threaded hole of inducer (1) rear end face, axial movement pipe I (4) rear end is sleeved on axial direction for I (4) front end
In moving tube II (5) front end, axial movement pipe II (5) rear end be sleeved in fixing pipe (6) front end, fixing pipe (6) rear end with turn
Axis (3) end is fixedly and coaxially connected；The both sides of axial movement pipe I (4) peripheral surface are respectively and fixedly provided with convex block I (13), axial movement pipe
The both sides of II (5) inner surface are provided with the sliding slot I (14) with convex block I (13) cooperation installation, and sliding slot I (14) is axially moveable pipe II
(5) axial arranged, convex block I (13) is flush-mounted in sliding slot I (14) so that between axial movement pipe I (4) and axial movement pipe II (5)
It is moved freely along axis after socket；The both sides of axial movement pipe II (5) peripheral surface are respectively and fixedly provided with convex block II (15), fixing pipe (6)
The both sides of inner surface are provided with the sliding slot II (16) with convex block II (15) cooperation installation, and sliding slot II (16) is along the axial cloth of fixing pipe (6)
It sets, convex block II (15) is flush-mounted in sliding slot I (14) so that along axis after being socketed between axial movement pipe II (5) and fixing pipe (6)
It moves freely；So that by between convex block and sliding slot between axial movement pipe I (4), axial movement pipe II (5) and fixing pipe (6)
Prismatic pair realize inducer (1) and impeller (2) between axial distance change；Feed arrangement (7), push-pull rod (8) and spring
(9) it is arranged in axial movement pipe I (4), axial movement pipe II (5) and fixing pipe (6) socket to be formed by cavity, feeding dress
It sets (7) to be fixed in fixing pipe (6) inner cavity, spring (9) one end is fixedly welded on axial movement pipe I (4) front end and (closes
Front end inner face), the other end is fixedly welded on feed arrangement (7), and feed arrangement (7) only plays support for spring (9) herein
Fixed function；Push-pull rod (8) passes through spring (9), one end to be fixedly welded on axial movement pipe I (4) front end (i.e. closed front end
Inner face), the other end is axially movably attached to feed arrangement (7)；It moves axially pipe I (4) front end and is equipped with outward flange, outward flange
Supersonic generator (10) is installed on the step surface towards rear end；Fixing pipe (6) rear end be equipped with outward flange, outer flange face to
Ultrasonic displacement signal receiver (11) is installed on the step surface of front end；It is installed in impeller (2) entrance fixing pipe (6) rear end
There is pressure pulsation sensor (12).
2. a kind of adjustable experimental provision for studying inducer axial distance according to claim 1, feature exist
In：The axial movement pipe I (4), axial movement pipe II (5) and fixing pipe (6) diameter are sequentially increased.
3. a kind of adjustable experimental provision for studying inducer axial distance according to claim 1, feature exist
In：The support arm that the feed arrangement (7) is stretched out by surrounding is fixed to fixing pipe (6) inner wall so that feed arrangement (7) and consolidates
Fixed tube (6) is fixedly connected.
4. a kind of adjustable experimental provision for studying inducer axial distance according to claim 1, feature exist
In：It is formed and is slidably matched between the feed arrangement (7) and push-pull rod (8), feed arrangement (7) drives push-pull rod (8) along axis
To pushing ahead or retracting backward, to reach the purpose for adjusting inducer (1) axial position being connected with push-pull rod (8).
5. a kind of adjustable experimental provision for studying inducer axial distance according to claim 1, feature exist
In：Mainly by axial movement pipe I (4), axial movement pipe II (5), fixing pipe (6), feed arrangement (7), push-pull rod (8) and spring
(9) axial distance adjustment module (18) is constituted.
6. a kind of adjustable experimental provision for studying inducer axial distance according to claim 1, feature exist
In：The pressure pulsation sensor (12) is using Germany WIKA pressure pulsation sensors, model S-10, precision for ±
0.25%, the response time is less than or equal to 1ms, 0~0.4MPa of range.
7. a kind of adjustable experimental provision for studying inducer axial distance according to claim 1, feature exist
In：The feed arrangement (7) and push-pull rod (8) using model XZLNG25 it is green how source push rod feed arrangement, stroke range
50mm, feeding mode rack pinion engagement type, bears load 9.8N.
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| CN201810366018.1A CN108414205B (en) | 2018-04-23 | 2018-04-23 | Adjustable experimental device for researching axial distance of inducer |
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| CN115045837A (en) * | 2022-08-12 | 2022-09-13 | 江苏振华海科装备科技股份有限公司 | Anti-cavitation centrifugal pump with vibration and noise reduction functions |
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| 郭晓梅;李昳;崔宝玲;朱祖超: "前置不同诱导轮高速离心泵旋转空化特性研究", 航空学报, no. 007 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092573A (en) * | 2018-10-08 | 2018-12-28 | 中国工程物理研究院总体工程研究所 | A kind of vibration damping geotechnical centrifuge suitable for three shaft vibration platforms |
| CN109092573B (en) * | 2018-10-08 | 2024-01-30 | 中国工程物理研究院总体工程研究所 | Vibration reduction geotechnical centrifuge suitable for triaxial shaking table |
| CN115045837A (en) * | 2022-08-12 | 2022-09-13 | 江苏振华海科装备科技股份有限公司 | Anti-cavitation centrifugal pump with vibration and noise reduction functions |
| CN115045837B (en) * | 2022-08-12 | 2022-11-11 | 江苏振华海科装备科技股份有限公司 | Anti-cavitation centrifugal pump with vibration and noise reduction functions |
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| CN108414205B (en) | 2023-10-17 |
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