CN104964076A - Low-noise pressure-regulating valve - Google Patents
Low-noise pressure-regulating valve Download PDFInfo
- Publication number
- CN104964076A CN104964076A CN201510254921.5A CN201510254921A CN104964076A CN 104964076 A CN104964076 A CN 104964076A CN 201510254921 A CN201510254921 A CN 201510254921A CN 104964076 A CN104964076 A CN 104964076A
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- CN
- China
- Prior art keywords
- valve
- aperture
- valve body
- pressure regulator
- noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
Abstract
The invention discloses a low-noise pressure-regulating valve applied to a temporary filling type air tunnel. The low-noise pressure-regulating valve comprises a valve sleeve, a valve core, a driving mechanism and a valve body and is characterized in that the valve sleeve extends to an outlet of the valve body and is connected to the valve body in an abutting mode; the position where the valve sleeve is connected with the valve body in an abutting mode is sealed by a sealing ring; and multiple small holes are formed in an extending wall of an annular gap channel located at the pressure-regulating valve of the valve sleeve. The jet flow scale is decreased by means of jet flows of the multiple small holes so that high noise caused by a jet-flow shear layer of a throttling channel can be effectively reduced. Additionally, eddy scale is effectively reduced due to large eddy break up such that noise energy is shifted to high frequency, effectiveness of a muffler at the downstream of the air tunnel is improved and the capability of transmitting noises to the downstream becomes weaker.
Description
Technical field
The present invention relates to a kind of low noise pressure regulator valve that can be used for filling temporarily formula wind-tunnel, belong to experimental aerodynamics field.
Background technique
Pressure regulator valve is one of critical component of wind-tunnel, for controlling the stream pressure in stable section, in wind tunnel operation process, along with the decline of bleed pressure, by the aperture of control system regulable control pressure regulator valve, to ensure that in stable section, stream pressure is stabilized in a certain operating pressure value, maintain the normal operation of wind-tunnel.The quality of pressure regulator valve performance directly has influence on the quality of Flow Field in Wind Tunnel.
Fill the many employings annular slot pressure regulator valve in formula wind-tunnel at present temporarily, its structure diagram is shown in accompanying drawing 1, this pressure regulator valve can obtain control characteristic that is linear or approximately linear under prevailing operating state, and air-flow symmetry properties is good after having valve, regulation range is wide, the advantages such as change in resistance evenly and full-gear resistance is little in spool moving process.But this pressure regulator valve also has obvious shortcoming, first its voltage adjustment characteristic is too sensitive, the easy overshoot of pressure and produce fluctuation, in addition, because the interaction etc. between the jet of spool slit place air-flow, strong separation and shock wave can produce stronger aerodynamic noise, its magnitude can reach 180dB, and the high intensity noise of valve can conduct to downstream, thus make the background noise of test chamber higher, affect flow field quality.
Along with in the design of aircraft model to the increase of the special test demand such as aero-acoustics test, fluctuation pressure and buffeting test, both at home and abroad the background noise of wind-tunnel is more and more paid close attention to.It is generally higher that current domestic routine fills formula wind-tunnel temporarily, also cannot carry out the high quality acoustic experiment of model.Therefore be necessary to carry out noise reduction process to pressure regulator valve, avoid producing stronger aerodynamic noise from root, thus effectively reduce the background noise of wind-tunnel, improve flow field quality.
Summary of the invention
Technical problem solved by the invention: the present invention is directed to and existingly fill formula wind-tunnel annulus pressure regulator valve aerodynamic noise shortcoming bigger than normal temporarily, a kind of low noise pressure regulator valve that can be used for filling temporarily formula wind-tunnel is provided, reduce the noise in wind tunnel noise source from root, thus effectively improve the quality of Flow Field in Wind Tunnel.
Low noise pressure regulator valve of the present invention comprises valve pocket, spool, driving mechanism and valve body, described valve pocket extends to described valve outlet place, and be connected on described valve body, described valve pocket is sealed by seal ring with the place of abutting of described valve body, and the prolongation wall being positioned at the passage place, annulus of pressure regulator valve of described valve pocket offers multiple aperture.
Aperture on preferred described prolongation wall is to have uniform distances to each other and the mode with same apertures lines up many rows, and described aperture is inclination aperture, and its tilt port is towards carrying out flow path direction.
The aperture of preferred described aperture, hole pitch and tilt angle require to be determined by the method for numerical simulation of optimum and ground experiment checking according to wind-tunnel actual motion.
The present invention compared with prior art tool has the following advantages:
(1) the present invention can transform the existing formula wind-tunnel annulus pressure regulator valve that fills temporarily, makes its aerodynamic noise effectively reduce about 10dB ~ 20dB, reduces the noise in wind tunnel noise source from root, thus effectively improves the quality of Flow Field in Wind Tunnel;
(2) make pressure regulator valve obtain more linear voltage adjustment characteristic, pressure regulation sensitivity slightly reduces, and effectively can reduce the pressure surge of wind-tunnel.
Accompanying drawing explanation
Fig. 1 is low noise pressure regulator valve structural representation
The aperture schematic layout pattern that Fig. 2 (1) is valve pocket, (2) are small structure schematic diagram.
Embodiment
Just by reference to the accompanying drawings the present invention is described further below.
As shown in Figure 1, a kind ofly can be used for the low noise pressure regulator valve filling formula wind-tunnel temporarily, comprising: valve pocket 1, spool 2, driving mechanism 3 and valve body 4, its core apparatus is many orifice jets valve pocket 1.Valve pocket 1 extends to valve body 4 outlet port, and is connected on valve body 4, and valve pocket 1 is sealed by seal ring with the place of abutting of valve body 4, and the prolongation wall being positioned at the passage place, annulus of pressure regulator valve of valve pocket 4 offers multiple aperture.
As shown in Figure 2, the aperture on the prolongation wall of valve pocket 1 is to have uniform distances to each other and the mode with same apertures lines up many rows, and all apertures are inclination aperture, and its tilt port is all towards carrying out flow path direction.The present invention is on the existing basis filling formula wind-tunnel annulus pressure regulator valve structure temporarily, original valve pocket is transformed into many apertures valve pocket, is transformed into many orifice jets passage, adopts seal ring to seal between valve pocket 1 and valve body 4 by original annulus passage.Many orifice jets have following benefit to reduction valve noise: first, reduce the yardstick of jet, effectively can reduce the very noisy that throttling passage jet shear layer causes.Secondly by large turbo-charger set, effectively reduce eddy current yardstick, make the energy of noise to high frequency offset, add the effectiveness of wind-tunnel downstream silencing apparatus, reduce the ability that noise transmits to downstream.The size of orifice jet noise reduction and small aperture and pitch-row, and the incident angle in hole has direct relation.Therefore the key of this valve pocket 1 design is the size determining hole diameter and hole pitch, and the incident angle θ in hole.
According to the designing requirement of noise, the method by numerical simulation and ground experiment determines aperture and hole pitch size, and the incident angle in hole.
First according to the job requirement of wind-tunnel reality and the working stroke of valve, the smallest aperture rate of many apertures valve pocket is determined, to meet the requirement of flow and pressure.
Then according to wind-tunnel actual operation parameters, adopt numerical simulation to obtain method and many apertures valve pocket is optimized.
Finally verify on surface noise measuring table, in the operating range that wind-tunnel actual motion requires, choose optimum orifice size.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art, repeats no more.
Above the preferred embodiment of the present invention is illustrated, but the present invention is not limited to above-described embodiment.To one skilled in the art, in the category described in claims, various modification or fixed case can be expected apparently, certainly also belong to technology category of the present invention.
Claims (3)
1. a low noise pressure regulator valve, comprise valve pocket, spool, driving mechanism and valve body, it is characterized in that: described valve pocket extends to described valve outlet place, and be connected on described valve body, described valve pocket is sealed by seal ring with the place of abutting of described valve body, and the prolongation wall being positioned at the passage place, annulus of pressure regulator valve of described valve pocket offers multiple aperture.
2. low noise pressure regulator valve as claimed in claim 1, is characterized in that: the aperture on described prolongation wall is to have uniform distances to each other and the mode with same apertures lines up many rows, and described aperture is inclination aperture, and its tilt port is towards carrying out flow path direction.
3. low noise pressure regulator valve as claimed in claim 2, is characterized in that: the aperture of described aperture, hole pitch and tilt angle require to be determined by the method for numerical simulation of optimum and ground experiment checking according to wind-tunnel actual motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510254921.5A CN104964076A (en) | 2015-05-19 | 2015-05-19 | Low-noise pressure-regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510254921.5A CN104964076A (en) | 2015-05-19 | 2015-05-19 | Low-noise pressure-regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104964076A true CN104964076A (en) | 2015-10-07 |
Family
ID=54218128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510254921.5A Pending CN104964076A (en) | 2015-05-19 | 2015-05-19 | Low-noise pressure-regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104964076A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62137484A (en) * | 1985-12-06 | 1987-06-20 | Nippon Beeles- Kk | High differential pressure adjusting valve |
| JPH0960763A (en) * | 1995-08-25 | 1997-03-04 | Motoyama Seisakusho:Kk | Cage for regulating valve, regulating valve, and diffuser |
| JPH1122856A (en) * | 1997-07-07 | 1999-01-26 | Motoyama Seisakusho:Kk | Cage for adjusting valve adjusting valve and piping silencer |
| EP1278979B1 (en) * | 2000-05-04 | 2003-09-03 | Control Components Inc. | Fluid flow control device |
| CN201318489Y (en) * | 2008-12-16 | 2009-09-30 | 成都乘风阀门有限责任公司 | Slit type annular hydraulic regulating valve |
| CN100549605C (en) * | 2004-12-30 | 2009-10-14 | 缠绕机公司 | Choke valve and the method that is used for increasing drop size at the fluid stream that flows through choke valve |
| CN101755158A (en) * | 2007-07-25 | 2010-06-23 | 费希尔控制产品国际有限公司 | Valve with valve cage |
| CN203009872U (en) * | 2012-11-28 | 2013-06-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Annular gap type pressure adjusting valve for transonic-supersonic wind tunnel |
| CN103195933A (en) * | 2013-04-08 | 2013-07-10 | 中国航天空气动力技术研究院 | Hydraulic driving pressure adjusting valve for wind tunnel |
-
2015
- 2015-05-19 CN CN201510254921.5A patent/CN104964076A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62137484A (en) * | 1985-12-06 | 1987-06-20 | Nippon Beeles- Kk | High differential pressure adjusting valve |
| JPH0960763A (en) * | 1995-08-25 | 1997-03-04 | Motoyama Seisakusho:Kk | Cage for regulating valve, regulating valve, and diffuser |
| JPH1122856A (en) * | 1997-07-07 | 1999-01-26 | Motoyama Seisakusho:Kk | Cage for adjusting valve adjusting valve and piping silencer |
| EP1278979B1 (en) * | 2000-05-04 | 2003-09-03 | Control Components Inc. | Fluid flow control device |
| CN100549605C (en) * | 2004-12-30 | 2009-10-14 | 缠绕机公司 | Choke valve and the method that is used for increasing drop size at the fluid stream that flows through choke valve |
| CN101755158A (en) * | 2007-07-25 | 2010-06-23 | 费希尔控制产品国际有限公司 | Valve with valve cage |
| CN201318489Y (en) * | 2008-12-16 | 2009-09-30 | 成都乘风阀门有限责任公司 | Slit type annular hydraulic regulating valve |
| CN203009872U (en) * | 2012-11-28 | 2013-06-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Annular gap type pressure adjusting valve for transonic-supersonic wind tunnel |
| CN103195933A (en) * | 2013-04-08 | 2013-07-10 | 中国航天空气动力技术研究院 | Hydraulic driving pressure adjusting valve for wind tunnel |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151007 |
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| RJ01 | Rejection of invention patent application after publication |