CN203688254U - Hydraulic pulsation test device - Google Patents
Hydraulic pulsation test device Download PDFInfo
- Publication number
- CN203688254U CN203688254U CN201320875210.6U CN201320875210U CN203688254U CN 203688254 U CN203688254 U CN 203688254U CN 201320875210 U CN201320875210 U CN 201320875210U CN 203688254 U CN203688254 U CN 203688254U
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- hydraulic cylinder
- piston
- shaking table
- test device
- pressure
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 230000010349 pulsation Effects 0.000 title abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000001133 acceleration Effects 0.000 claims description 8
- 230000003020 moisturizing effect Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000033558 biomineral tissue development Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical compound C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 239000002760 rocket fuel Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model discloses a hydraulic pulsation test device which includes a vibration table and a hydraulic cylinder. The hydraulic cylinder is internally provided with a piston; the piston through a piston rod is in transmission connection with a moving part of the vibration table; a hydraulic cylinder cavity, which is at one side of the piston and close to the vibration table, is filled with a compressible fluid medium; a hydraulic cylinder cavity which is at the other side of the piston is communicated with an accumulator liquid chamber; and the hydraulic cylinder cavity which is at the other side of the piston and the accumulator are also filled with the compressible fluid medium. The hydraulic pulsation test device can easily adjust the output displacement and frequency of the vibration table, so as to adapt to different pressure pulsation amplitudes and frequencies; the high control precision of the pressure fluctuation is ensured; and the hydraulic pulsation test device is simple in assembly structure, low in maintenance cost, and easy in operation.
Description
Technical field
The utility model is particularly related to the pressure surge in a kind of simulated rocket fuel tube, and in order to examine the test unit of accumulator fatigue behaviour on pipeline.
Background technology
The harsh grade of the pressure fluctuation in rocket fuel conveyance conduit is by the amplitude of pulsing, and equalized pressure and ripple frequency form, and its simulation medium is generally water.At present, electromagnetic type shaking table coordinates vibration controller, can accurately realize alternative frequency and displacement amplitude, and larger thrust also can be provided.But the precise displacement control that shaking table provides cannot directly apply to pressure fluctuation simulation test.Meanwhile, for most hydraulic fatigue test equipment, can pass through executive component transmission, compression accumulator bellows air cavity, realizes pulsation amplitude, but due to the requirement of pressure fluctuation and the design feature of accumulator, also more difficult direct utilization.
Utility model content
In view of deficiency of the prior art, the purpose of this utility model is to provide a kind of pulsating hydraulic test device and method.
For realizing aforementioned utility model object, the technical scheme that the utility model adopts is as follows:
A kind of pulsating hydraulic test device, involving vibrations platform and hydraulic cylinder, wherein, in described hydraulic cylinder, be provided with piston, described piston is in transmission connection through the moving component of piston rod and shaking table, and the hydraulic cylinder lumen loading in close shaking table one side that is positioned at piston has compressible flow body medium, and the hydraulic cylinder inner chamber that is positioned at piston opposite side is communicated with accumulator sap cavity, and is also filled with incompressible fluid medium at this hydraulic cylinder inner chamber and accumulator sap cavity that is arranged in piston opposite side.
Comparatively preferred, described pulsating hydraulic test device also can comprise: at least in order to regulate the moisturizing pressurizer of pressure of the incompressible fluid medium in described hydraulic cylinder inner chamber and/or accumulator sap cavity.
Comparatively preferred, described pulsating hydraulic test device also can comprise: at least in order to detect and to regulate incompressible fluid medium and/or the pressure of compressible flow body medium and/or the pressure monitoring system of shaking table stage body air bag internal gas pressure in described hydraulic cylinder inner chamber.
A kind of pulsating hydraulic test method, comprising:
Provide shaking table as power source,
Provide hydraulic cylinder as actuated element, in described hydraulic cylinder, be provided with piston, this piston is in transmission connection through the moving component of piston rod and shaking table, and be positioned at the hydraulic cylinder lumen loading compressible flow body medium of close shaking table one side of piston, and the hydraulic cylinder inner chamber that is positioned at piston opposite side is communicated with accumulator sap cavity, and fill incompressible fluid medium at this hydraulic cylinder inner chamber and accumulator sap cavity that is arranged in piston opposite side;
And, Vibration on Start-up platform, by the motion of shaking table moving component, the incompressible fluid medium that makes to be filled in hydraulic cylinder and accumulator sap cavity produces extruding to accumulator air cavity, mineralization pressure pulsation.
Comparatively preferred, the method also comprises:
At least regulate the pressure of the incompressible fluid medium in described hydraulic cylinder inner chamber and/or accumulator sap cavity with moisturizing pressurizer, and/or, at least detect and regulate incompressible fluid medium in described hydraulic cylinder inner chamber and/or pressure and/or the shaking table stage body air bag internal gas pressure of compressible flow body medium with pressure monitoring system, make the hydrodynamic pressure in accumulator sap cavity reach setting numerical value, and make the moving component of shaking table substantially in equilibrium position.
Further, described hydraulic cylinder is fixedly connected with shaking table stage body by erecting frame.
Preferably, described piston rod is directly connected with the moving-coil of described shaking table, and described piston rod and described moving-coil coaxially arrange.
Further, also can be provided with acceleration transducer on the moving component of described shaking table, described acceleration transducer is connected with the control system of described shaking table.
Compared with prior art, the utility model at least has following good effect: can accurately realize pressure fluctuation, and can be according to different testing requirements, regulate easily sap cavity equalized pressure, require lower to the quiescent load of shaking table, and the apparatus structure adopting is simple, assembling maintenance cost is low.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of pulsating hydraulic test device in a preferred embodiment of the present utility model;
Fig. 2 is the fundamental diagram of a kind of pulsating hydraulic test device in a preferred embodiment of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and corresponding embodiment, the technical solution of the utility model is further described.
An aspect of the present utility model provides a kind of pulsating hydraulic test method, comprising:
Provide shaking table as power source,
Provide hydraulic cylinder as actuated element, in described hydraulic cylinder, be provided with piston, this piston is in transmission connection through the moving component of piston rod and shaking table, and be positioned at the hydraulic cylinder lumen loading compressible flow body medium of close shaking table one side of piston, and the hydraulic cylinder inner chamber that is positioned at piston opposite side is communicated with accumulator sap cavity, and fill incompressible fluid medium at this hydraulic cylinder inner chamber and accumulator sap cavity that is arranged in piston opposite side;
And, Vibration on Start-up platform, by the motion of shaking table moving component, the incompressible fluid medium that makes to be filled in hydraulic cylinder and accumulator sap cavity produces extruding to accumulator air cavity, mineralization pressure pulsation.
Accordingly, another aspect of the present utility model provides a kind of pulsating hydraulic test device, involving vibrations platform and hydraulic cylinder, wherein, in described hydraulic cylinder, be provided with piston, described piston is in transmission connection through the moving component of piston rod and shaking table, and the hydraulic cylinder lumen loading in close shaking table one side that is positioned at piston has compressible flow body medium, and the hydraulic cylinder inner chamber that is positioned at piston opposite side is communicated with accumulator sap cavity, and be also filled with incompressible fluid medium at this hydraulic cylinder inner chamber and accumulator sap cavity that is arranged in piston opposite side.
And, in the utility model, comparatively preferred, also at least regulate the pressure of the incompressible fluid medium in described hydraulic cylinder inner chamber and/or accumulator sap cavity with moisturizing pressurizer, and/or, at least detect and regulate incompressible fluid medium in described hydraulic cylinder inner chamber and/or pressure and/or the shaking table stage body air bag internal gas pressure of compressible flow body medium with pressure monitoring system, make the hydrodynamic pressure in accumulator sap cavity reach setting numerical value, and make the moving component of shaking table substantially in equilibrium position.
Further, in the utility model, also can on the moving component of shaking table, acceleration transducer be set, and described acceleration transducer is connected with the control system of described shaking table, to monitor in real time the operation conditions of shaking table, and adjust by control system in time.
Aforesaid incompressible fluid medium can adopt water, hydraulic pressure wet goods, preferably adopts water.
Aforesaid compressible fluid media (medium) can adopt all kinds of gas, for example air.
Aforementioned hydraulic cylinder system adopts non standard hydraulic cylinders, but its structure discloses as above.And this hydraulic cylinder can any conventional approaches be fixed, but be preferably fixedly connected with shaking table stage body.
Aforesaid shaking table is optional with electric vibration table etc., but is not limited to this, and described shaking table moving component can comprise moving-coil etc.
Referring to shown in Fig. 1 is an exemplary embodiments of the present utility model, its a kind of pulsating hydraulic test device relating to can comprise that electric vibration table 1, vibration control system, pressure monitoring system 2, acceleration transducer and hydraulic cylinder 3(are nonstandard) etc., wherein, described hydraulic cylinder 3 is to be fixedly connected with shaking table stage body 11 by erecting frame 4, and, this piston rod 31 is to be directly connected with the moving-coil 12 of described shaking table, and described piston rod 31 coaxially arranges with described moving-coil 12.And for the accumulator with larger bellows volume, also can arrange moisturizing pressurizer 5 etc.
Aforementioned hydraulic cylinder 3 adopts nonstandard hydraulic cylinder, and piston one side is air, and opposite side is water, and changes sap cavity end flanges, and flange outlet latus rectum expands, and side opening changes upper shed into.
Refer to again Fig. 2, in the time carrying out pulsating hydraulic test with this pulsating hydraulic test device, drive hydraulic cylinder piston rod to produce by shaking table and determine frequency vibration, taking the water in accumulator sap cavity and connecting line as driving medium, produce pressure fluctuation.Suppose that the gas in accumulator 6 air cavitys is ideal gas, the water in sap cavity is incompressible fluid, and the displacement of shaking table can carry out preresearch estimates by the accumulator pressure required volume change of pulsing, specific as follows:
Change law according to ideal gas isothermal,
Accumulator air cavity volume changes, and extends
and shortening
time, internal pressure reaches the required amplitude of pressure fluctuation of test
.
Wherein
for accumulator air cavity area,
for accumulator air cavity elemental height.The output displacement of shaking table is
Wherein
,
for hydraulic cylinder inner chamber area.
In debug process, can be according to the calculated results
, in controller, set test condition as follows, carry out preliminary experiment, and according to reality pulsation amplitude pair
dfinely tune, reach testing requirements.
| Frequency (Hz) | Displacement (mm) | Number of times |
| f | d | ≥10000 |
The use step of this pulsating hydraulic test device is as follows:
1, the erecting frame of hydraulic cylinder 4 is fixed on shaking table 1, afterwards hydraulic cylinder is installed on erecting frame;
2, accumulator 6 sap cavities are connected to the output pipe of hydraulic cylinder sap cavity;
3, setting pressure sensor 21, starting pressure supervisory system;
4,, by the coordination pressurization of hydraulic cylinder air cavity and shaking table stage body air bag (or moisturizing pressurizer), ensure that sap cavity pressure reaches required value, and moving-coil is positioned at equilibrium position substantially;
5, acceleration transducer 7 is installed, the control parameter of determining frequency vibration is set, after all devices inspection is errorless, Vibration on Start-up system;
6,, according to amplitude of pressure fluctuation, adjust the displacement amplitude of shaking table;
7, amplitude of pressure fluctuation reaches after testing requirements, formally tests;
8,, in process of the test, with pressure transducer, particularly oscillatory pressure pick-up is measured the pressure variation of accumulator sap cavity and air cavity, until off-test.
Based on previous designs, make this pulsating hydraulic test device there is following advantages:
(a) adopt shaking table to realize and determine frequency vibration, and as the power source of pressure transmission, can be by the simple displacement amplitude that determine frequency vibration of adjusting, and the accurate amplitude of pressure fluctuation of realization setting.
(b) adopt the hydraulic cylinder with simple structure to realize the connection for transmission between shaking table and accumulator, particularly, by strengthening the outlet latus rectum of hydraulic cylinder, ensured that transmission process has enough flows, improve high frequency transmission efficiency.
(c) the piston two ends inner chamber medium of hydraulic cylinder, one end is air, the other end is water.By regulating the pressure in air inner chamber (air cavity), a part of pressure in balance sap cavity, realizes the pressure self-balancing of this test unit.
(d) by the coordination pressurization of hydraulic cylinder air cavity and shaking table stage body air bag, realize the adjustment of the equalized pressure of pulsing in test unit sap cavity, reduce the static load of test unit to shaking table.
It is pointed out that above is only concrete exemplary applications of the present utility model, and protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, within all dropping on the utility model rights protection scope.
Claims (6)
1. a pulsating hydraulic test device, it is characterized in that, involving vibrations platform and hydraulic cylinder, wherein, in described hydraulic cylinder, be provided with piston, described piston is in transmission connection through the moving component of piston rod and shaking table, and the hydraulic cylinder lumen loading in close shaking table one side that is positioned at piston has compressible flow body medium, and the hydraulic cylinder inner chamber that is positioned at piston opposite side is communicated with accumulator sap cavity, and be also filled with incompressible fluid medium at this hydraulic cylinder inner chamber and accumulator sap cavity that is arranged in piston opposite side.
2. pulsating hydraulic test device according to claim 1, is characterized in that, it also comprises:
At least in order to regulate the moisturizing pressurizer of pressure of the incompressible fluid medium in described hydraulic cylinder inner chamber and/or accumulator sap cavity.
3. pulsating hydraulic test device according to claim 1, is characterized in that, it also comprises:
At least in order to detect and to regulate incompressible fluid medium and/or the pressure of compressible flow body medium and/or the pressure monitoring system of shaking table stage body air bag internal gas pressure in described hydraulic cylinder inner chamber.
4. pulsating hydraulic test device according to claim 1, is characterized in that, described hydraulic cylinder is fixedly connected with shaking table stage body by erecting frame.
5. according to the pulsating hydraulic test device described in claim 1 or 4, it is characterized in that, described piston rod is directly connected with the moving-coil of described shaking table, and described piston rod and described moving-coil coaxially arrange.
6. pulsating hydraulic test device according to claim 1, is characterized in that, is also provided with acceleration transducer on the moving component of described shaking table, and described acceleration transducer is connected with the control system of described shaking table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875210.6U CN203688254U (en) | 2013-12-27 | 2013-12-27 | Hydraulic pulsation test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875210.6U CN203688254U (en) | 2013-12-27 | 2013-12-27 | Hydraulic pulsation test device |
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| CN203688254U true CN203688254U (en) | 2014-07-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712787A (en) * | 2013-12-27 | 2014-04-09 | 天津航天瑞莱科技有限公司苏州分公司 | Pressure circulation service life testing system and method |
| CN104897356A (en) * | 2014-11-26 | 2015-09-09 | 天津航天瑞莱科技有限公司苏州分公司 | Hydraulic impact test method |
| CN108278245A (en) * | 2018-01-22 | 2018-07-13 | 北京理工大学 | A kind of larger hydrocarbon suspension cylinder dynamic performance testing method and system |
| CN109238615A (en) * | 2018-11-05 | 2019-01-18 | 苏州东菱振动试验仪器有限公司 | A kind of device, method and the electromagnetic vibration generator system of equilibrium centrifugation power |
| CN113820136A (en) * | 2021-08-26 | 2021-12-21 | 上海航天精密机械研究所 | Pressure balance test device and method for gas injection type accumulator |
| CN114876915A (en) * | 2022-04-08 | 2022-08-09 | 北京航空航天大学 | Self-pressure-regulating gas-liquid coupling type fluid pulsation vibration damping device |
-
2013
- 2013-12-27 CN CN201320875210.6U patent/CN203688254U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712787A (en) * | 2013-12-27 | 2014-04-09 | 天津航天瑞莱科技有限公司苏州分公司 | Pressure circulation service life testing system and method |
| CN103712787B (en) * | 2013-12-27 | 2016-12-07 | 天津航天瑞莱科技有限公司苏州分公司 | Pressures cycle service life experiment system and method |
| CN104897356A (en) * | 2014-11-26 | 2015-09-09 | 天津航天瑞莱科技有限公司苏州分公司 | Hydraulic impact test method |
| CN104897356B (en) * | 2014-11-26 | 2017-11-07 | 天津航天瑞莱科技有限公司苏州分公司 | Hydraulic shock test method |
| CN108278245A (en) * | 2018-01-22 | 2018-07-13 | 北京理工大学 | A kind of larger hydrocarbon suspension cylinder dynamic performance testing method and system |
| CN109238615A (en) * | 2018-11-05 | 2019-01-18 | 苏州东菱振动试验仪器有限公司 | A kind of device, method and the electromagnetic vibration generator system of equilibrium centrifugation power |
| CN113820136A (en) * | 2021-08-26 | 2021-12-21 | 上海航天精密机械研究所 | Pressure balance test device and method for gas injection type accumulator |
| CN114876915A (en) * | 2022-04-08 | 2022-08-09 | 北京航空航天大学 | Self-pressure-regulating gas-liquid coupling type fluid pulsation vibration damping device |
| CN114876915B (en) * | 2022-04-08 | 2023-03-17 | 北京航空航天大学 | Self-pressure-regulating gas-liquid coupling type fluid pulsation vibration damping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200424 Address after: 300000 No. 9 North Third Street, West District, Tianjin Binhai New Area Development Zone Patentee after: TIANJIN AEROSPACE RELIA TECHNOLOGY Co.,Ltd. Address before: Mudu Wuzhong District Jin Feng Road Suzhou city Jiangsu province 215000 No. 198 Building 5 Room 501 (Jinfeng business center) Patentee before: SUZHOU BRANCH OF TIANJIN AEROSPACE RELIA TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 |