CN110259767A - A kind of broad band low frequency hydraulic pulsation pressure damper - Google Patents
A kind of broad band low frequency hydraulic pulsation pressure damper Download PDFInfo
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- CN110259767A CN110259767A CN201910571410.4A CN201910571410A CN110259767A CN 110259767 A CN110259767 A CN 110259767A CN 201910571410 A CN201910571410 A CN 201910571410A CN 110259767 A CN110259767 A CN 110259767A
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- low frequency
- supporting plate
- elastic slice
- annular supporting
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of broad band low frequency hydraulic pulsation pressure dampers, it is related to noise reduction technology field, including interface flange, attenuator shell, cross bow-shaped shrapnel, screw type H structure resonant cavity, insertion tube, elastic slice support plate, annular supporting plate, perforation structure pipe；Interface flange and insertion tube are after being connected on the end plates of whole insertion attenuator shell；Perforation structure pipe is arranged on the axis of attenuator shell to be contacted with front and rear cover plate；Annular supporting plate interference is connected on perforation structure pipe, and elastic slice support plate and cross bow-shaped shrapnel are pressed on the inner wall end surface plate of attenuator shell by annular supporting plate；Taper circular hole is provided on the head and the tail both ends circumferencial direction of perforation structure pipe and annular supporting plate；Screw type H structure resonant cavity is by aperture position of the cylindrical holes structure welding on cavity on perforation structure pipe and keeps being connected to.There is apparent fluctuation pressure attenuating within the scope of broad band low frequency, compact-sized, high temperature high voltage resistant is applicable in for a long time.
Description
Technical field
The present invention relates to noise reduction technology field, especially a kind of broad band low frequency hydraulic pulsation pressure damper.
Background technique
Hydraulic pressure transfer system has that output power, commutation is fast, speed adjustable range is wide, can realize that overload protection etc. is excellent automatically
Point, using more and more extensive in daily industrial production.The main source of hydraulic system pulse characteristic is hydraulic pump and its pipeline
Accessory system, mainly by itself, periodically rotation drives the cyclically-varying of cavity volume come real to general volume-type hydraulic pump
The transport of existing fluid, this periodic volume changes so that the flow of pump output generates periodically pulsing, flow and pressure
Pulsation is propagated along pipeline, and each element of induction system vibrates, to have greatly destructiveness to system, influences hydraulic system
Stability, generate energy loss and the problems such as noise pollution.
In order to solve the problems, such as that hydraulic pulsation, traditional pulsation dampening mainly from system load, pass through attenuator
Hydraulic pulsation is absorbed and eliminated, common are the attenuating structures such as bladder-type, expanding, H-type silencer, microperforated panel, bladder-type
It is effective mainly for very low frequency pulsation decaying, it is not suitable for the occasion of environment harshness and needs to regularly replace elastic balloon, expands
It opens type and H-type is effective mainly for specific frequency ingredient, volume is larger, is not suitable for the occasion of spaces compact, micropunch type
Suitable for eliminating radio-frequency component hydraulic pulsation, centering low-frequency effect is limited.Therefore current pulsation dampening is for working environment
Occasion that is harsh and cannot replacing element for a long time is all less applicable in.
Summary of the invention
The present invention regarding to the issue above and technical need, proposes a kind of broad band low frequency hydraulic pulsation pressure damper.
Technical scheme is as follows:
A kind of broad band low frequency hydraulic pulsation pressure damper, comprising: interface flange, attenuator shell, cross bow-shaped shrapnel,
Screw type H structure resonant cavity, insertion tube, elastic slice support plate, annular supporting plate, perforation structure pipe；
The interface flange is fixedly connected on the rear whole end plates for being inserted into the attenuator shell with the insertion tube；
The perforation structure pipe is arranged on the axis of the attenuator shell, the front and rear cover plate with the attenuator shell
It is in contact；
The annular supporting plate interference connection is through on the perforation structure pipe, and the annular supporting plate is by the elastic slice support plate
It is pressed in the cross bow-shaped shrapnel on the inner wall end surface plate of the attenuator shell, keeps the cross bow-shaped shrapnel to have pre-
Decrement；The cross bow-shaped shrapnel offsets the fluid pulsation of hydraulic system very low frequency using self-deformation；
It is provided with taper circular hole on the panel of the head and the tail both ends circumferencial direction of the perforation structure pipe and the annular supporting plate, is used
In the low frequency pulsating of dissipation fluid；
The screw type H structure resonant cavity is by the cylindrical holes structure welding on cavity on the perforation structure pipe
Aperture position and keep being connected to, form porous concentric pressure fluctuation attenuating structure.
Its further technical solution are as follows: the cross bow-shaped shrapnel is connected by bolt with the elastic slice support plate, institute
It states cross bow-shaped shrapnel and the elastic slice support plate is arranged in the annular groove of the annular supporting plate, the cross arch bullet
Piece, the elastic slice support plate and the whole both ends of the surface against the attenuator shell of annular supporting plate are installed, the cross bow
The back of shape elastic slice is in contact with the end plates of the attenuator shell.
Its further technical solution are as follows: the screw type H structure resonant cavity is by the neck short tube of helical structure in institute
State perforation structure pipe tube fluid connection, formed structure of resonant cavity, the neck short tube of the screw type H structure resonant cavity it is straight
Diameter, length and resonant cavity volume determine resonant frequency.
Its further technical solution are as follows: the annular supporting plate includes mounting plane, pressure relief opening, the damping of the first taper
Hole；The mounting plane is used for mounting elastic sheet support plate and cross bow-shaped shrapnel, and the pressure relief opening corresponds to the elastic slice branch
The position of fagging is covered by the elastic slice support plate, and first conical damping hole is distributed in described on the annular supporting plate
Region except the covering of elastic slice support plate；
Liquid stream by the pressure relief opening enter after act in the elastic slice support plate, the elastic slice support plate along
Cross bow-shaped shrapnel described in the displacement compression of axle center forms the decaying of low frequency fluid pulse；Liquid stream further passes through the annular support
The first conical damping hole on plate carries out the dissipation of fluid pulse, and decay low frequency pulsating pressure.
Its further technical solution are as follows: the perforation structure pipe be porous concentric structure, including the second conical damping hole,
Low frequency recirculation hole, porous noise elimination structure, perforated pipe main structure；Second conical damping hole is located at the perforated pipe main body knot
Two end side surfaces of the perforated pipe main structure are arranged in the end positions of structure, the low frequency recirculation hole, the annular supporting plate
For link position between second conical damping hole and the low frequency recirculation hole, the porous noise elimination structure is located at described wear
The middle section of hole pipe main structure；
The center of the perforation structure pipe is the main fluid course of attenuator, while liquid stream passes through the low frequency recirculation hole
It flows into the hollow circular hole of the annular supporting plate, low frequency big pulsed flow of liquid is compressed the cross bow-shaped shrapnel when flowing into and axially transported
It is dynamic, so that liquid stream is entered the both sides of the face of the attenuator shell, is returned to after being dissipated by second conical damping hole described
In the main fluid course of perforation structure pipe；The porous noise elimination structure and the attenuator shell form the back chamber of porous noise elimination
Structure.
The method have the benefit that:
Pass through interface flange, attenuator shell, cross bow-shaped shrapnel, screw type H structure resonant cavity, insertion tube, elastic slice branch
Fagging, annular supporting plate, the reasonable high temperature resistant of perforation structure pipe composed structure, high pressure and the hydraulic arteries and veins of broad band low frequency for irradiating structure
Dynamic attenuator structure, so that having apparent fluctuation pressure attenuating within the scope of broad band low frequency, compact-sized, high temperature resistant is high
Pressure is long-term to be applicable in, and realizes the attenuating of pulsation dampening full frequency band.
Detailed description of the invention
Fig. 1 is a kind of structure section view for broad band low frequency hydraulic pulsation pressure damper that the application one embodiment provides
Figure.
Fig. 2 is the structure sectional view for the annular supporting plate that the application one embodiment provides.
Fig. 3 is the front view for the annular supporting plate that the application one embodiment provides.
Fig. 4 is the installation front view for the cross bow-shaped shrapnel that the application one embodiment provides.
Fig. 5 is the installation side view for the cross bow-shaped shrapnel that the application one embodiment provides.
Fig. 6 is the front view for the helical structure H-type resonant cavity that the application one embodiment provides.
Fig. 7 is the structural schematic diagram for the helical structure H-type resonant cavity that the application one embodiment provides.
Fig. 8 is the structural schematic diagram for the perforation structure pipe that the application one embodiment provides.
Specific embodiment
The following further describes the specific embodiments of the present invention with reference to the drawings.
Fig. 1 is a kind of structure section view for broad band low frequency hydraulic pulsation pressure damper that the application one embodiment provides
Figure, as shown in Figure 1, the broad band low frequency hydraulic pulsation pressure damper includes: interface flange 1, attenuator shell 2, cross arch
Elastic slice 3, screw type H structure resonant cavity 4, insertion tube 5, elastic slice support plate 6, annular supporting plate 7, perforation structure pipe 8.
Interface flange 1 is fixedly connected on the end plates of rear whole insertion attenuator shell 2 with insertion tube 5.
Interface flange 1 is used to connect other pipe flanges in attenuator and hydraulic line system.
One end of insertion tube 5 is connected with interface flange 1, and the other end is inserted into the nozzle of attenuator shell 2.
Perforation structure pipe 8 is arranged on the axis of attenuator shell 2, is in contact with the front and rear cover plate of attenuator shell 2.
Annular 7 interference of supporting plate connection is through on perforation structure pipe 8, and annular supporting plate 7 is by elastic slice support plate 6 and cross arch bullet
Piece 3 is pressed on the inner wall end surface plate of attenuator shell 2, and cross bow-shaped shrapnel 3 is kept to have pre compressed magnitude；Cross bow-shaped shrapnel 3
The fluid pulsation of hydraulic system very low frequency is offset using self-deformation.
Cross bow-shaped shrapnel 3 is placed in the circular groove of annular supporting plate 7, while elastic slice branch is placed under cross bow-shaped shrapnel 3
Fagging 6, the whole both ends of the surface against attenuator shell 2 of three are installed, and cross bow-shaped shrapnel 3 is kept to have certain pre compressed magnitude.
The circle end face of annular supporting plate 7 is welded on the inner wall of attenuator shell 2, inner circle end face and 8 mistake of perforation structure pipe
It is full of cooperation.
Optionally, in conjunction with referring to figs. 2 and 3, annular supporting plate 7 includes mounting plane 701, the cone of pressure relief opening 702, first
Shape damping hole 703；Mounting plane 701 is used for mounting elastic sheet support plate 6 and cross bow-shaped shrapnel 3, the corresponding bullet of pressure relief opening 702
The position of piece support plate 6 is covered by elastic slice support plate 6, and the first conical damping hole 703 is distributed on annular supporting plate 7 by elastic slice branch
Region except the covering of fagging 6.Illustratively, elastic slice support plate 6 is a circular slab, is mounted on shown in mounting plane 702
On groove circular flat.
Liquid stream acts in elastic slice support plate 6 after being entered by pressure relief opening 702, and elastic slice support plate 6 is along axle center position
Compression cross bow-shaped shrapnel 3 is moved, the decaying of low frequency fluid pulse is formed；Liquid stream into this part cavity further passes through annular
The first conical damping hole 703 on supporting plate 7 carries out the dissipation of fluid pulse, and decay low frequency pulsating pressure.
Optionally, cross bow-shaped shrapnel 3 is connected by bolt with elastic slice support plate 6, cross bow-shaped shrapnel 3 and elastic slice support
Plate 6 is arranged in the annular groove of annular supporting plate 7, and cross bow-shaped shrapnel 3, elastic slice support plate 6 and annular supporting plate 7 are whole against declining
Subtract the both ends of the surface installation of device shell 2, the back of cross bow-shaped shrapnel 3 is in contact with the end plates of attenuator shell 2.In conjunction with reference
Fig. 4 and Fig. 5, it illustrates the scheme of installation of cross bow-shaped shrapnel 3.
It is provided with taper circular hole on the panel of the head and the tail both ends circumferencial direction of perforation structure pipe 8 and annular supporting plate 7, for dissipating
The low frequency pulsating of fluid.
Screw type H structure resonant cavity 4 passes through aperture of the cylindrical holes structure welding on perforation structure pipe 8 on cavity
Position simultaneously keeps being connected to, and forms porous concentric pressure fluctuation attenuating structure.The structure can be approximately by multiple concentric last of the twelve Earthly Branches
Mu Huozi unit is series-parallel and constitutes, simultaneously because the aperture to gather in through-flow structural tube, it may have certain Damping work is made
With, thus can have attenuating in wider band limits to pressure fluctuation.
Screw type H structure resonant cavity 4 is connected to by the neck short tube of helical structure in the tube fluid of perforation structure pipe 8,
Structure of resonant cavity is formed, diameter, length and the resonant cavity volume of the neck short tube of screw type H structure resonant cavity 4 determine resonance frequency
Rate.
In conjunction with reference Fig. 6 and Fig. 7, it illustrates the structural schematic diagrams of screw type H structure resonant cavity 4.Screw type H structure is total
Chamber 4 shake for multiple spiral-shaped structures composition, the helix length and diameter of each structure have specific ratio, by by calculating
The screw type cavity body structure of draw ratio realizes the decaying of fluctuation pressure in narrow bandwidth range in Mid Frequency, and selectivity is strong, while spiral
Type structure ensure that the compactedness of structure.
In conjunction with reference Fig. 8, optionally, perforation structure pipe 8 be porous concentric structure, it is preceding in after arrange different structure
Aperture, including the second conical damping hole 801, low frequency recirculation hole 802, porous noise elimination structure 803, perforated pipe main structure 804；The
Two conical damping holes 801 are located at the end positions of perforated pipe main structure 804, and low frequency recirculation hole 802 is arranged in perforated pipe main body
Two end side surfaces of structure 804, the link position of annular supporting plate 7 be located at the second conical damping hole 801 and low frequency recirculation hole 802 it
Between, porous noise elimination structure 803 is located at the middle section of perforated pipe main structure 804.
The center of perforation structure pipe 8 is the main fluid course of attenuator, while liquid stream is flowed by low frequency recirculation hole 802
In the hollow circular hole of annular supporting plate 7, compression cross bow-shaped shrapnel 3 is axially moved when the big pulsed flow of liquid of low frequency flows into, make liquid stream into
Enter the both sides of the face to attenuator shell 2, the main liquid of perforation structure pipe 8 is returned to after dissipating by the second conical damping hole 801
In circulation road；Porous noise elimination structure 803 forms the back cavity structure of porous noise elimination with attenuator shell 2, which can
Effectively to be decayed to fluid pulse in wider frequency segment limit.
It is that fluctuation pressure passes through the low-frequency flow on the perforation structure pipe 8 of fluid course when there is biggish hydraulic impulse to arrive
The compression fluid into attenuator shell 2 of through-hole 802 can pass through the pressure relief opening on annular supporting plate 7 after fluid is compressed
702, low frequency is further discharged, since pressure relief opening 702 is covered by elastic slice support plate 6, fluid compression elastic slice
Cross bow-shaped shrapnel 3 is compressed after support plate 6, is offseted by the elastic restoring force and low frequency hydraulic pulsation power of cross bow-shaped shrapnel 3
Disappear, to decay to low frequency hydraulic pulsation.
First conical damping hole 703 acted on the second conical damping hole 801 it is consistent, positioned at different positions.
Broad band low frequency hydraulic pulsation pressure damper provided by the present application is compact-sized, reasonable, easy for installation, reliability
Height, all-metal structure can high-temperature and high-presure resistent working environment be applicable in for a long time, can be realized in wide frequency range to fluid pulse
Significant attenuating.
In conclusion broad band low frequency hydraulic pulsation pressure damper provided in this embodiment passes through four cross bow-shaped shrapnels
It realizes the buffering of hydraulic low frequency pulsating (20~200Hz), reduces low-frequency pulse component.By perforation structure pipe close to disengaging mouth region
The conical damping hole in domain to enter cross bow-shaped shrapnel low frequency hydraulic pulsation ingredient in the cavity further pass through taper
Damping hole enters directly into attenuator after dissipating further decays.Pass through multiple abnormally-structured spiral shells of attenuator intermediate arrangement
Rotating H-type resonant cavity, can be to specific by different draw ratios (ratio of different spiral length and spiral pipe diameter)
Fluctuation pressure signal in narrowband frequency range carries out the decaying of selectivity, and in the realization of multiple groups helical structure H-type resonant cavity
The fluctuating signal decaying of (200~500Hz) interior primary bands within the scope of frequency, while helical structure pipe is compact-sized, is conducive to sky
Between arrange, improve the compactedness of attenuator structure.Pass through the porous concentric type structure and attenuator of perforation structure pipe interlude
The back chamber that shell is formed forms the Helmholtz's unit cascaded structure for being similar to multiple communications, which can be effectively to higher
The fluctuation pressure signal of frequency range (500~1000Hz) forms effective attenuation, simultaneously because the aperture to gather in through-flow structural tube, has
Conducive to certain Damping work effect is formed, be conducive to dither decaying.The compact-sized frame that whole device uses,
A variety of pulsation damping measures are merged in the confined space, overall construction design is extremely compact.
Above-described is only preferred embodiments of the invention, and present invention is not limited to the above embodiments.It is appreciated that this
The other improvements and change that field technical staff directly exports or associates without departing from the spirit and concept in the present invention
Change, is considered as being included within protection scope of the present invention.
Claims (5)
1. a kind of broad band low frequency hydraulic pulsation pressure damper characterized by comprising interface flange, attenuator shell, cross
Bow-shaped shrapnel, screw type H structure resonant cavity, insertion tube, elastic slice support plate, annular supporting plate, perforation structure pipe；
The interface flange is fixedly connected on the rear whole end plates for being inserted into the attenuator shell with the insertion tube；
The perforation structure pipe is arranged on the axis of the attenuator shell, connects with the front and rear cover plate of the attenuator shell
Touching；
The annular supporting plate interference connection is through on the perforation structure pipe, and the annular supporting plate is by the elastic slice support plate and institute
It states cross bow-shaped shrapnel to be pressed on the inner wall end surface plate of the attenuator shell, keeps the cross bow-shaped shrapnel that there is precommpression
Amount；The cross bow-shaped shrapnel offsets the fluid pulsation of hydraulic system very low frequency using self-deformation；
It is provided with taper circular hole on the panel of the head and the tail both ends circumferencial direction of the perforation structure pipe and the annular supporting plate, for consuming
The low frequency pulsating of diffusing body；
The screw type H structure resonant cavity is small on the perforation structure pipe by the cylindrical holes structure welding on cavity
Hole site simultaneously keeps being connected to, and forms porous concentric pressure fluctuation attenuating structure.
2. broad band low frequency hydraulic pulsation pressure damper according to claim 1, which is characterized in that the cross arch bullet
Piece is connected by bolt with the elastic slice support plate, and the cross bow-shaped shrapnel and the elastic slice support plate are arranged in the annular
In the annular groove of supporting plate, the cross bow-shaped shrapnel, the elastic slice support plate and the annular supporting plate integrally decline against described
Subtract the both ends of the surface installation of device shell, the back of the cross bow-shaped shrapnel is in contact with the end plates of the attenuator shell.
3. broad band low frequency hydraulic pulsation pressure damper according to claim 1, which is characterized in that the screw type H knot
Structure resonant cavity is connected to by the neck short tube of helical structure in the tube fluid of the perforation structure pipe, and structure of resonant cavity is formed,
Diameter, length and the resonant cavity volume of the neck short tube of the screw type H structure resonant cavity determine resonant frequency.
4. broad band low frequency hydraulic pulsation pressure damper according to claim 1, which is characterized in that the annular supporting plate packet
Include mounting plane, pressure relief opening, the first conical damping hole；The mounting plane is used for mounting elastic sheet support plate and cross arch
Elastic slice, the pressure relief opening correspond to the position of the elastic slice support plate, are covered by the elastic slice support plate, first taper
Damping hole is distributed on the annular supporting plate by the region except elastic slice support plate covering；
Liquid stream acts in the elastic slice support plate after being entered by the pressure relief opening, and the elastic slice support plate is along axle center
Cross bow-shaped shrapnel described in displacement compression forms the decaying of low frequency fluid pulse；Liquid stream further passes through on the annular supporting plate
The first conical damping hole carry out fluid pulse dissipation, decay low frequency pulsating pressure.
5. broad band low frequency hydraulic pulsation pressure damper according to any one of claims 1 to 4, which is characterized in that described to wear
Pore structure pipe is porous concentric structure, including the second conical damping hole, low frequency recirculation hole, porous noise elimination structure, perforated pipe main body
Structure；Second conical damping hole is located at the end positions of the perforated pipe main structure, and the low frequency recirculation hole setting exists
The link position of two end side surfaces of the perforated pipe main structure, the annular supporting plate is located at second conical damping hole and institute
It states between low frequency recirculation hole, the porous noise elimination structure is located at the middle section of the perforated pipe main structure；
The center of the perforation structure pipe is the main fluid course of attenuator, while liquid stream is flowed by the low frequency recirculation hole
In the hollow circular hole of the annular supporting plate, low frequency big pulsed flow of liquid is compressed the cross bow-shaped shrapnel when flowing into and is axially moved, and makes
Liquid stream enters the both sides of the face of the attenuator shell, and the perforation is returned to after dissipating by second conical damping hole and is tied
In the main fluid course of structure pipe；The porous noise elimination structure and the attenuator shell form the back cavity structure of porous noise elimination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910571410.4A CN110259767B (en) | 2019-06-28 | 2019-06-28 | Low-frequency broadband hydraulic pulsating pressure attenuator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910571410.4A CN110259767B (en) | 2019-06-28 | 2019-06-28 | Low-frequency broadband hydraulic pulsating pressure attenuator |
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| Publication Number | Publication Date |
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| CN110259767A true CN110259767A (en) | 2019-09-20 |
| CN110259767B CN110259767B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413075A (en) * | 2022-01-11 | 2022-04-29 | 全球通(浙江)环保科技有限公司 | U-shaped slow-release diffusion circulating tube and U-shaped slow-release diffusion circulating tube assembly thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4164954A (en) * | 1975-02-25 | 1979-08-21 | Allan Ballard | Fluid pressure control mechanism |
| JP2000002393A (en) * | 1998-06-12 | 2000-01-07 | Komatsu Ltd | Liquid pressure pulsation-reducing device |
| CN201202513Y (en) * | 2008-06-05 | 2009-03-04 | 重庆大学 | Exhausting silencer with variable volume |
| CN102434545A (en) * | 2011-11-30 | 2012-05-02 | 西安交通大学 | Liquid flow pulsation attenuator |
| CN103115214A (en) * | 2013-01-29 | 2013-05-22 | 浙江大学 | Wave absorbing device used for eliminating and reducing noise and pulses of hydraulic system fluid |
| CN105673987A (en) * | 2016-03-01 | 2016-06-15 | 浙江大学 | Frequency-adjustable flow pulsation attenuator |
| CN105864209A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Method for restraining pressure pulsation of hydraulic system |
| CN105864155A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Pressure pulsation suppression method for full-band hydraulic system |
| CN105864190A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Variable structure working condition self-adaption hydraulic filtering equipment |
| CN205781661U (en) * | 2016-05-28 | 2016-12-07 | 中国船舶重工集团公司第七一九研究所 | A kind of two-stage deafener of compressed air blowdown piping end |
-
2019
- 2019-06-28 CN CN201910571410.4A patent/CN110259767B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4164954A (en) * | 1975-02-25 | 1979-08-21 | Allan Ballard | Fluid pressure control mechanism |
| JP2000002393A (en) * | 1998-06-12 | 2000-01-07 | Komatsu Ltd | Liquid pressure pulsation-reducing device |
| CN201202513Y (en) * | 2008-06-05 | 2009-03-04 | 重庆大学 | Exhausting silencer with variable volume |
| CN102434545A (en) * | 2011-11-30 | 2012-05-02 | 西安交通大学 | Liquid flow pulsation attenuator |
| CN103115214A (en) * | 2013-01-29 | 2013-05-22 | 浙江大学 | Wave absorbing device used for eliminating and reducing noise and pulses of hydraulic system fluid |
| CN105673987A (en) * | 2016-03-01 | 2016-06-15 | 浙江大学 | Frequency-adjustable flow pulsation attenuator |
| CN105864209A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Method for restraining pressure pulsation of hydraulic system |
| CN105864155A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Pressure pulsation suppression method for full-band hydraulic system |
| CN105864190A (en) * | 2016-05-12 | 2016-08-17 | 绍兴文理学院 | Variable structure working condition self-adaption hydraulic filtering equipment |
| CN205781661U (en) * | 2016-05-28 | 2016-12-07 | 中国船舶重工集团公司第七一九研究所 | A kind of two-stage deafener of compressed air blowdown piping end |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413075A (en) * | 2022-01-11 | 2022-04-29 | 全球通(浙江)环保科技有限公司 | U-shaped slow-release diffusion circulating tube and U-shaped slow-release diffusion circulating tube assembly thereof |
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| Publication number | Publication date |
|---|---|
| CN110259767B (en) | 2020-05-05 |
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