CN106949117A - A kind of test device of spring Valve Vibration Frequency Response - Google Patents
A kind of test device of spring Valve Vibration Frequency Response Download PDFInfo
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- CN106949117A CN106949117A CN201710277561.XA CN201710277561A CN106949117A CN 106949117 A CN106949117 A CN 106949117A CN 201710277561 A CN201710277561 A CN 201710277561A CN 106949117 A CN106949117 A CN 106949117A
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- valve
- spring
- spring valve
- frequency response
- piston block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A kind of test device of spring Valve Vibration Frequency Response, including：Acceleration transducer, valve rod, spring, valve element, piston block, toggle, valve body, variable-frequency motor.Acceleration transducer is positioned over the extended end of valve rod, and valve rod extended end stretches out valve body；Valve rod is connected with spring；Piston block is placed in the inwall of spring valve body, and piston block lower end is connected with toggle small end；Variable-frequency motor is connected with the big end of toggle.The device produces pressure pulse by variable-frequency motor and encouraged, and acceleration transducer directly determines the vibration acceleration of spring valve, it is adaptable to the spring Valve Vibration frequency response function test under a variety of pressure pulse excitations.
Description
Technical field
The present invention is mainly applied in hydraulic-mechanic system, and it is related to a kind of frequency response function test device, especially one
Plant the test device of spring Valve Vibration Frequency Response.
Background technology
Spring valve is one of key equipment in the various equipment of hydraulic system, peace of its stabilization run to whole hydraulic system
Full influence on system operation is great.Spring valve is the operating pressure automatic open close according to pressure system, is generally mounted to setting for closed system
Protection system safety on standby or pipeline.When equipment or manifold pressure exceed safety valve setting pressure, pressure release is automatically turned on,
Ensure that pressure medium is under setting pressure in equipment and pipeline, protection equipment and pipeline normal work prevent accident, subtracted
Few loss.But among some military main pump systems, the requirement to spring valve is more strict, except needing to meet normal shape
Beyond the work of condition, in addition it is also necessary to so that vibration during valve body work is smaller, to meet normal military requirement.
Spring valve can simply regard a spring oscillator as, when it is acted on by the fluctuation pressure of certain frequency,
Spring oscillator will do mechanical oscillation.When the frequency of fluctuation pressure and the equal intrinsic frequency of spring oscillator, it will produce
Resonance, so that the vibratory response of system can be caused excessive.Under normal circumstances, the purposes of spring valve can not cause that people's is enough
Pay attention to, but its vibration characteristics on whole hydraulic system has very big influence, gently then influences the normal work of hydraulic system, sternly
Weight can even influence the concealment of hull, reduce the combat performance on naval vessel.
Therefore, the frequency sound test of spring valve can effectively predict that spring valve exists to avoiding the abnormal vibrations from having directive significance
Frequency under resonance.Nowadays, the vibration analysis research to spring valve is fewer and equally several to the Frequency Response Analysis of spring valve
Do not have.Most of is all the design and parameter study to spring valve, and such as Zhou Changcheng of in August, 2007 exists《Handling machinery》In
Deliver《Influence of the internal diameter of cylinder to hydro-pneumatic spring valve parameter designing》.Even frequency sound test is analyzed, and is also in spring valve
The frequency sound test of chamber pressure and amount of opening, such as in March, 2006 Ke Ming it is pure《Engineering machinery》In deliver《Electric-hydraulic proportion throttles
Valve frequency response function test means discussion》.So far, point that most of tests for spring valve are still rested in flow field
Analysis, to the research still imperfection of spring Valve Vibration, frequency response function test and its test device of the spring valve in vibration field are also
In blank stage.
The content of the invention
, should it is an object of the invention to provide a kind of test device of simple and reasonable spring Valve Vibration Frequency Response
Test device can be tested and predicted to the vibration characteristics of spring valve, so as to improve the safety of spring valve and its hydraulic system
Property and reliability.
To achieve these goals, the invention provides a kind of test device of spring Valve Vibration Frequency Response, including bullet
Spring valve, also includes：Acceleration transducer, toggle, variable-frequency motor；
Acceleration transducer is positioned over the extended end of spring valve valve rod；There are piston block, piston block lower end in spring valve body
It is connected with toggle small end；Variable-frequency motor is connected with the big end of toggle.
The present invention can also include：
1. described in spring valve body at the top of have an individual aperture, hole diameter is more than stem diameter.
2. described in piston block be located at valve body inlet inwall, piston block length is less than under valve body inlet and non-working condition
The distance of valve element.
The beneficial effect of test device of the present invention is：
1. spring Valve Vibration frequency sound test device of the present invention is by being placed in the acceleration transducer of valve stem top
Signal, directly determines the vibration acceleration of valve element, and obtained disc vibration Frequency Response is accurate and effective；
2. the crank connecting link and then promotion piston block that are driven with variable-frequency motor, it is possible to achieve the simulation of liquid pressure pulsations.
The design of this driving source is easy to implement, and operability is stronger.
3. test device is simple and reasonable, accurate test, and then realization pair can be done to the Frequency Response of spring valve
The prediction of the resonant frequency of spring valve, it is to avoid the abnormal vibration failure of spring valve.So as to just ensure spring valve and hydraulic system
Normal work, greatly reduce the rate of breakdown of hydraulic system.
Brief description of the drawings
Fig. 1 is the schematic diagram of the vibration frequency response function test device of spring valve of the present invention.
Embodiment
It is further to the test device of spring Valve Vibration Frequency Response of the present invention specifically below in conjunction with accompanying drawing
It is bright：
As shown in figure 1, the invention provides a kind of test device of spring Valve Vibration Frequency Response, including：Acceleration is passed
Sensor 1, valve rod 2, spring 3, valve element 4, piston block 5, toggle 6, valve body 7, variable-frequency motor 8.Wherein, acceleration sensing
Device 1 is positioned over the extended end of valve rod 2, and the extended end of valve rod 2 stretches out valve body 7；Valve rod 2 is connected with spring 3.
Piston block 5 is placed in the inwall of spring valve body 7, and the lower end of piston block 5 is connected with the small end of toggle 6；
Variable-frequency motor 7 is connected with the big end of toggle 6.For driving piston block to be easy to reciprocating motion, so as to promote liquid in valve
The motion of body is acted on valve element.
Individual aperture is arranged at the top of spring valve body 7, and hole diameter is more than the diameter of valve rod 2 so that the valve being connected with spring
Bar is stretched out outside valve body, is easy at valve stem tip install vibration acceleration sensor.
Piston block 5 is located at the entrance inwall of valve body 7, and the length of piston block 5 is less than under valve body inlet and non-working condition
The distance of valve element 4.
Toggle 6, piston block 5 and the composition fluctuation pressure driving source of variable-frequency motor 8, realize that driving frequency is being examined
It is adjustable in the range of looking into.The frequency of rotor is acting frequency of the piston block to valve element.This part of device is used for simulating
Spring valve suffered pressure fluctuation to flow in real work, realizes the driving source for having ripple frequency of frequency sound test.
In the presence of fluctuation pressure, equivalent to one spring oscillator of valve element 4 makees oscillating movement under certain frequency.For
The lower valve core movement rule of detection vibration, the top placement acceleration transducer 1 at the valve rod extension being attached thereto, for adopting
Collect acceleration signal.Because the present apparatus is only intended to test the vibration Frequency Response of spring valve, the liquid capacity in valve is not required to
It is too many, as long as the active force to valve element can be met.
In order to vibration characteristics of the valve element under fluctuation pressure fully be analyzed, it is necessary to which the frequency of driving source is carried out not
Disconnected regulation, the i.e. constantly regulate by the rotational frequency of variable-frequency motor from small to large.Regulation is all once tested every time, so as to remember
Experimental data is recorded, the vibratory response under all frequencies is finally subjected to Macro or mass analysis, the vibration regularity of spring valve is found out and finds out
Frequency at the peak value of frequency response curve, and then judge resonant frequency.The method is convenient and swift, can be when spring valve is designed just
The vibration regularity of valve element is predicted, in order to avoid occurring resonance conditions in real work, causes the abnormal vibrations of spring valve, makes
Pressure oscillation is larger in valve, and flow field is unstable, or even is expanded to and influences the working condition of whole hydraulic system.
Claims (3)
1. a kind of test device of spring Valve Vibration Frequency Response, including spring valve, it is characterised in that also include：Acceleration is passed
Sensor, toggle, variable-frequency motor；
Acceleration transducer is positioned over the extended end of spring valve valve rod；There are piston block, piston block lower end and song in spring valve body
Handle linkage small end is connected；Variable-frequency motor is connected with the big end of toggle.
2. a kind of test device of spring Valve Vibration Frequency Response as claimed in claim 1, it is characterised in that described valve body
Top have an individual aperture, hole diameter is more than stem diameter.
3. a kind of test device of spring Valve Vibration Frequency Response as claimed in claim 1, it is characterised in that described piston
Block is located at valve body inlet inwall, and piston block length is less than the distance between valve body inlet and valve element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277561.XA CN106949117B (en) | 2017-04-25 | 2017-04-25 | A kind of test device of spring Valve Vibration Frequency Response |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277561.XA CN106949117B (en) | 2017-04-25 | 2017-04-25 | A kind of test device of spring Valve Vibration Frequency Response |
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| CN106949117A true CN106949117A (en) | 2017-07-14 |
| CN106949117B CN106949117B (en) | 2018-08-17 |
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| CN201710277561.XA Active CN106949117B (en) | 2017-04-25 | 2017-04-25 | A kind of test device of spring Valve Vibration Frequency Response |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682846A (en) * | 2021-08-31 | 2021-11-23 | 安徽寒锐新材料有限公司 | Conveying equipment for reduction vessel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682846A (en) * | 2021-08-31 | 2021-11-23 | 安徽寒锐新材料有限公司 | Conveying equipment for reduction vessel |
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| CN106949117B (en) | 2018-08-17 |
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