CN103758798A - Broad-frequency pressure-variable pressure pulsation attenuator - Google Patents
Broad-frequency pressure-variable pressure pulsation attenuator Download PDFInfo
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- CN103758798A CN103758798A CN201410026386.3A CN201410026386A CN103758798A CN 103758798 A CN103758798 A CN 103758798A CN 201410026386 A CN201410026386 A CN 201410026386A CN 103758798 A CN103758798 A CN 103758798A
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Abstract
The invention discloses a broad-frequency pressure-variable pressure pulsation attenuator which comprises a shell, end caps, elastic diaphragms and orifice plates. The two ends of the shell are used for being connected with a water inlet pipe and a water outlet pipe respectively, the side wall of the outer portion of the shell is evenly provided with multiple cavities in the axial direction and the circumferential direction, each cavity is divided into an upper cavity body and a lower cavity body through one elastic diaphragm in the corresponding cavity, the upper end of each upper cavity body compresses the corresponding elastic diaphragm through the corresponding end cap so as to seal the corresponding cavity, the upper cavity bodies serve as gas pressure cavities, the lower cavity bodies serve as energy storage cavities, and energy storage device holes are machined in the side wall of the shell so that the energy storage cavities can be communicated with the inside of the shell; the inside of the shell is axially provided with multiple round orifice plates provided with inclined through holes, the orifice plates are located between two axially adjacent energy storage device holes, and the surfaces of the orifice plates are axially perpendicular to the shell. A diaphragm device energy storage set is effectively combined with an orifice plate pulsation attenuator, so that attenuation can be carried out on pressure pulsation of different frequencies and pressures, broad-frequency pressure-variable pressure pulsation attenuation can be achieved, and the attenuator is suitable for various pressure application occasions.
Description
Technical field
The invention belongs to fluid line fixture technical field, be specifically related to a kind of wideband transformation pressure pulsation attenuator.
Background technique
The every profession and trades such as water conservancy and hydropower, fluid machinery, oil and natural gas conveying be unable to do without fluid-transporting tubing, and it is indispensable system element in Fluid Transport, transmission and control.But, in pipe-line system, there is pressure pulsation, can cause vibration equipment and noise pollution.
Adopt at present conventionally and accumulator is installed on pipeline is reduced pressure pulsation, accumulator attenuating is obvious, but related data is pointed out conventional accumulator and only the pressure pulsation of low frequency, specified pressure operating mode decayed; Also have appropriate location in pipe-line system that one or more orifice plates are installed pressure pulsation is decayed, this kind of method is simple, but conventionally only obvious to dither attenuating.
Summary of the invention
The shortcoming that can only decay to the pressure pulsation of characteristic frequency, specified pressure operating mode in order to overcome existing common pulsation dampening, the invention provides a kind of pressure pulsation attenuator, this attenuator both can be decayed to the pressure pulsation of different frequency scope, also can be to the pressure pulsation decay under different working condition pressures.
A kind of wideband transformation pressure pulsation attenuator, comprise housing, end cap, elastic diaphragm and orifice plate, the two ends of housing are respectively used to connect intake pipe and outlet pipe, the exterior side wall of housing is evenly processed with multiple cavitys along the axial and circumferential directions, by lay elastic diaphragm in cavity, cavity is separated into upper and lower two-part cavity, the upper end of upper cavity adopts end cap compress elastic diaphragm and play the seal action to cavity, upper cavity is as gas pressure chamber, lower cavity, as accumulation of energy chamber, makes accumulation of energy chamber be communicated with enclosure interior in housing sidewall processing accumulator hole; Enclosure interior is axially provided with multiple circular orifices with oblique through hole, orifice plate axially between adjacent two accumulator holes and orifice surface with housing shaft to vertical.
Further, on described orifice plate, have multi-ring annular through hole, each circle annular through-hole consists of multiple circumferentially equally distributed oblique through holes, by inner ring to the oblique through-hole diameter of outer ring, is increased gradually, and the oblique through hole cooperation on different orifice plates makes many screw type liquid passages of formation in housing.
Further, described orifice plate adopts circlip for hole location.
Further, on described end cap, have the inflation inlet that is filled with gas for gas pressure chamber.
The invention has the beneficial effects as follows:
(1) the present invention forms diaphragm accumulator group by cavity, end cap, elastic diaphragm and accumulator hole, diaphragm accumulator is distributed in the surrounding of housing, from the surrounding of pipeline, pressure pulsation is decayed, it can be decayed to the pressure pulsation of different pressures operating mode, adapts to various pressure applications.
(2) the present invention adopts the orifice plate with through hole as orifice plate attenuator, and as optimization, the orifice plate that in orifice plate attenuator adopts, aperture, outer macropore combine, can produce wave interference phenomenon after current pass through, and can subdue pulsation energy; Adopt multi-disc orifice plate to form S type spiral hole, current, by rear formation spiral flow, to subdue pressure pulsation energy, have improved the attenuating of pressure pulsation;
The present invention is combined with diaphragm accumulator group and orifice plate attenuator two large divisions, and attenuation band is wide, can decay to the pressure pulsation of different frequency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is orifice structure schematic diagram;
Fig. 3 is spirality channel schematic diagram;
In above-mentioned figure, be designated: housing 1, end cap 2, hexagon socket head cap screw 3, combined seal ring 4, hexagon socket head cap screw 5, nitrogen 6, elastic diaphragm 7, Protective nut 8, orifice plate 9, circlip for hole 10, macropore 11, aperture 12, spiral flow 13.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.In addition,, in each mode of execution of described the present invention, involved technical characteristics just can combine mutually as long as do not form each other conflict.
Fig. 1 is a kind of embodiment of the present invention, comprises housing 1, end cap 2, hexagon socket head cap screw 3, combined seal ring 4, hexagon socket head cap screw 5, elastic diaphragm 7, Protective nut 8, orifice plate 9, circlip for hole 10.There are two flanges at housing 1 two ends, are respectively used to connect import, export pipeline; The exterior side wall of housing 1 is evenly processed with multiple cavitys along the axial and circumferential directions, by lay elastic diaphragm 7 in cavity, cavity is separated into upper and lower two-part cavity, the upper end of upper cavity adopts end cap 2 to compress elastic diaphragm and play the seal action to cavity, upper cavity is as gas pressure chamber, and lower cavity is as accumulation of energy chamber.On end cap 2, have the inflation inlet that is filled with gas for gas pressure chamber, hexagon socket head cap screw 3 is pressed on combined seal ring 4 on housing 1, carries out inflation inlet sealing; Protective nut 8 is arranged on cover plate 2, protection end cap inflatable interface; Accumulator hole is uniformly distributed in housing 1 surrounding, and liquid flow in the accumulation of energy chamber that housing 1 and barrier film 7 form through this aperture; By inflator, gas pressure chamber is filled the nitrogen 6 of certain pressure, and end cap 2 is pressed on barrier film 7 on housing 1 by hexagon socket head cap screw 5; Orifice plate 9 is threaded connection with housing 1, and by circlip for hole 10 axially locating.
On described orifice plate, have multi-ring annular through hole, each circle annular through-hole consists of multiple circumferential equally distributed circular holes, by inner ring to the Circularhole diameter of outer ring, increased gradually, the circular hole position on different orifice plates exists skew to make the through hole on multiple orifice plates form many screw type liquid passages.Fig. 2 is an embodiment's orifice structure schematic diagram, and outer ring is macropore 11, and inner ring is aperture 12, and macropore 11, aperture 12 are distributed in orifice plate surrounding, and each through hole forms inclined hole along disalignment several angle.The orifice plate 9 that in adopting, aperture, outer macropore combine, can produce wave interference phenomenon after current pass through, and can subdue pulsation energy; Adopt multi-disc orifice plate 9 to form S type spiral hole, current, by rear formation spiral flow 13, are subdued pressure pulsation energy, can be referring to Fig. 3.
Flowing through liquid pulsation frequency is low frequency: when the pressure of liquid is during higher than the pressure of nitrogen 6, liquid can enter into the cavity volume that housing 1 and barrier film 7 form by accumulator hole, and barrier film 7 shrinks, and liquid constantly enters in cavity volume; When the pressure of liquid is during lower than the pressure of nitrogen 6, barrier film 7 is expanded, and liquid enters into pipeline from cavity volume by accumulator hole, thereby reduces pressure pulsation.Flowing through liquid pulsation frequency is high frequency: liquid, through the hole of orifice plate 9, produces and shrinks and expansion, reduces the component of pressure pulsation.
By cavity, end cap, elastic diaphragm and accumulator hole, form diaphragm accumulator, by setting the inflation pressure of each group, realize the decay to different working condition pressure pulsation.
The quantity of diaphragm accumulator group and volume size are determined and adjust according to housing sidewall thickness and performance requirement, orifice plate quantity as orifice plate attenuator is determined and adjusts according to shell length and performance requirement, optimum consideration effect, using the diaphragm accumulator group of same circumferential distribution on housing as one group of diaphragm accumulator group, the diaphragm accumulator group quantity between adjacent two orifice plates is more than or equal to two.For the spacing between adjacent two orifice plates guarantees to form certain spirality channel, between adjacent two orifice plates, should keep a determining deviation.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a wideband transformation pressure pulsation attenuator, it is characterized in that, comprise housing, end cap, elastic diaphragm and orifice plate, the two ends of housing are respectively used to connect intake pipe and outlet pipe, the exterior side wall of housing is evenly processed with multiple cavitys along the axial and circumferential directions, by lay elastic diaphragm in cavity, cavity is separated into upper and lower two-part cavity, the upper end of upper cavity adopts end cap compress elastic diaphragm and play the seal action to cavity, upper cavity is as gas pressure chamber, lower cavity is as accumulation of energy chamber, in housing sidewall processing accumulator hole, accumulation of energy chamber is communicated with enclosure interior, enclosure interior is axially provided with multiple circular orifices with oblique through hole, orifice plate axially between adjacent two accumulator holes and orifice surface with housing shaft to vertical.
2. wideband transformation pressure pulsation attenuator according to claim 1, it is characterized in that, on described orifice plate, have multi-ring annular through hole, each circle annular through-hole consists of multiple circumferentially equally distributed oblique through holes, by inner ring to the oblique through-hole diameter of outer ring, increased gradually, the oblique through hole cooperation on different orifice plates makes many screw type liquid passages of formation in housing.
3. wideband transformation pressure pulsation attenuator according to claim 1 and 2, is characterized in that, described orifice plate adopts circlip for hole location.
4. wideband transformation pressure pulsation attenuator according to claim 1 and 2, is characterized in that, has the inflation inlet that is filled with gas for gas pressure chamber on described end cap.
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| CN201410026386.3A CN103758798B (en) | 2014-01-21 | 2014-01-21 | Broad-frequency pressure-variable pressure pulsation attenuator |
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| CN201410026386.3A CN103758798B (en) | 2014-01-21 | 2014-01-21 | Broad-frequency pressure-variable pressure pulsation attenuator |
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| CN103758798B CN103758798B (en) | 2016-01-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889200A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Full-band variable structure working condition adaptive hydraulic filtering method |
| CN110939614A (en) * | 2019-12-14 | 2020-03-31 | 哈尔滨工业大学 | Broadband spring oscillator hydraulic pulsation attenuator |
| CN111706739A (en) * | 2020-06-24 | 2020-09-25 | 华中科技大学 | Frequency-division combined pressure pulsation attenuation device and method |
| CN111895175A (en) * | 2020-07-17 | 2020-11-06 | 浙江理工大学 | Mobile self-adaptive rectifying device for process valve |
| CN114922884A (en) * | 2022-05-06 | 2022-08-19 | 燕山大学 | Broadband pressure pulsation attenuator for hydraulic pipeline and working process thereof |
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| JPH06101795A (en) * | 1992-09-18 | 1994-04-12 | Toyoda Mach Works Ltd | Pressure pulsation absorbing device |
| CN1542293A (en) * | 2003-01-29 | 2004-11-03 | KMTˮ����ϵͳ��˾ | High pressure attenuator |
| US20070125436A1 (en) * | 2005-12-07 | 2007-06-07 | Accuri Instruments Inc. | Pulsation attenuator for a fluidic system |
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2014
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Patent Citations (5)
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| JPH06101795A (en) * | 1992-09-18 | 1994-04-12 | Toyoda Mach Works Ltd | Pressure pulsation absorbing device |
| CN1542293A (en) * | 2003-01-29 | 2004-11-03 | KMTˮ����ϵͳ��˾ | High pressure attenuator |
| US20070125436A1 (en) * | 2005-12-07 | 2007-06-07 | Accuri Instruments Inc. | Pulsation attenuator for a fluidic system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889200A (en) * | 2016-05-12 | 2016-08-24 | 绍兴文理学院 | Full-band variable structure working condition adaptive hydraulic filtering method |
| CN110939614A (en) * | 2019-12-14 | 2020-03-31 | 哈尔滨工业大学 | Broadband spring oscillator hydraulic pulsation attenuator |
| CN111706739A (en) * | 2020-06-24 | 2020-09-25 | 华中科技大学 | Frequency-division combined pressure pulsation attenuation device and method |
| CN111895175A (en) * | 2020-07-17 | 2020-11-06 | 浙江理工大学 | Mobile self-adaptive rectifying device for process valve |
| CN114922884A (en) * | 2022-05-06 | 2022-08-19 | 燕山大学 | Broadband pressure pulsation attenuator for hydraulic pipeline and working process thereof |
| CN114922884B (en) * | 2022-05-06 | 2023-03-28 | 燕山大学 | Broadband pressure pulsation attenuator for hydraulic pipeline and working process thereof |
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| CN103758798B (en) | 2016-01-20 |
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