CN103591375A - Externally-arranged multipurpose silencer - Google Patents
Externally-arranged multipurpose silencer Download PDFInfo
- Publication number
- CN103591375A CN103591375A CN201310588875.3A CN201310588875A CN103591375A CN 103591375 A CN103591375 A CN 103591375A CN 201310588875 A CN201310588875 A CN 201310588875A CN 103591375 A CN103591375 A CN 103591375A
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- China
- Prior art keywords
- multipurpose
- acoustical panel
- silencing
- external
- valve
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to an externally-arranged multipurpose silencer. The externally-arranged multipurpose silencer comprises a silencing shell. 1-4 silencing plates are placed inside the silencing shell 1 and compressed by a silencing cover. The silencing shell and the silencing cover are sealed by means of a first metal winding gasket with a positioning ring so as to prevent leakage. A second metal winding gasket with inner and outer rings is arranged between an outlet end flange and the inlet end of the silencing shell and connected by means of first screws and first nuts in a fastened mode. A third metal winding gasket with inner and outer rings is arranged between a pipeline flange and the silencing cover and connected by means of a second nut and a second screw in a fastened mode. The second screw is screwed in a threaded hole in the right end of the silencing shell through a through hole in the silencing cover. According to the externally-arranged multipurpose silencer, the structure of a valve is not changed, the stability of parts inside the valve is ensured, universality is high, the externally-arranged multipurpose silencer can be used in cooperation with various valves, the number of the silencing plates can be increased or decreased so as to meet the specific working condition, the externally-arranged multipurpose silencer is simple in structure, safe, reliable and high in practicability.
Description
Technical field
The present invention relates to a kind of external multifunctional baffler, specifically a kind of technology that reduces fluid noise that has for modulating valve exploitation, belongs to fluid control technology field.
Background technique
The present invention relates to especially modulating valve of noise reduction, step-down valve.When valve opening hour, the pressure reduction before and after valve is larger, fluid is quite large at the flow velocity at sealing surface place, when velocity of medium reaches certain value, fluid just starts vaporization, when the suffered pressure of bubble in fluid reaches certain value, will explode.Bubble, at explosion time, produce very high pressure and shock wave in part, the mechanical energy of fluid is converted to mechanics acoustic energy, and still, away from the place of explosion center, pressure is again sharp-decay.Liquid just starts to produce cavitation, and noise will sharply increase.This process is called cavitation phenomenon, and valve component are had to destructiveness, and produces noise.
Generally, when pressure reduction is larger before and after valve, can go out some throttling silencer elements in modulating valve indoor design, but the existence of inner these throttling silencer elements, certainly will serve harmful effect to the structure band of valve itself, especially in the situation that valve does not have undergauge, for example rated flow is not enough, trim because thinner thickness is yielding, throttling silencer element because of the thinner erasure effect that causes not ideal enough.
For example, when on-the-spot process parameter changes (: the front and back pressure reduction of valve increases), can cause noise excessive, valve originally just cannot meet the demands, and need to change valve, and cost is too large like this, and this is puzzlement valve user's a great problem.
Summary of the invention
The object of the invention is to be to overcome the deficiencies in the prior art, a kind of external Multipurpose silent device is provided, this baffler can be put into valve outside by the throttling noise reduction of valve internal, thereby has avoided the deficiency in valve internal space, makes trim keep original intensity; Can remedy meeting the valve of on-site noise, without changing valve.
According to technological scheme provided by the invention, described external Multipurpose silent device, comprises sound attenuation, acoustical panel, the first band positioning ring type Metallic Spiral Wound Gasket, noise reduction lid, the first screw rod, the first nut, outlet end flange, the second band internal/external ring type spiral wound gasket, the 3rd band internal/external ring type spiral wound gasket, piping flange, the second nut and the second screw rod; In sound attenuation 1, put into 1-4 piece acoustical panel, with noise reduction lid, compress, between sound attenuation and noise reduction lid, by the first band positioning ring type Metallic Spiral Wound Gasket, seal Leakage prevention.
As a further improvement on the present invention, described sound attenuation left end is evenly equipped with some tapped holes, some tapped hole quantity is corresponding with the flange of modulating valve outlet end with tapped hole diameter, described sound attenuation right-hand member is evenly equipped with some tapped holes, and some tapped hole quantity is corresponding with piping flange with tapped hole diameter.
As a further improvement on the present invention, described acoustical panel is provided with bloop, and the aperture of bloop is Ф 2-Ф 4mm, by certain matrix distribution, the pore diameter size of bloop is relevant according to the viscosity of fluid, and the diameter of the larger bloop of viscosity is larger, but is generally not more than Ф 6mm.
As a further improvement on the present invention, being shaped as behind edge of described acoustical panel, intermediate thin.
As a further improvement on the present invention, between described noise reduction lid and sound attenuation, be provided with hexagon socket cap head screw, prevent that noise reduction lid from coming off.
Compared with the prior art the present invention has the following advantages:
1, do not change this body structure of valve, guarantee the stability of valve internal part;
2, highly versatile, can be used in conjunction with multiple valve;
3, acoustical panel quantity can increase or reduce, to meet concrete operating mode;
4, product structure is simple, safe and reliable, practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is that the pipeline of apparatus of the present invention is arranged use view.
The structural front view of Fig. 3 acoustical panel of the present invention.
The structure side view of Fig. 4 acoustical panel of the present invention.
The schematic diagram of Fig. 5 Concentric Reducers of the present invention.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
Shown in Fig. 1-Fig. 3, comprise sound attenuation 1, the first acoustical panel 2, the second acoustical panel 3, the 3rd acoustical panel 4, the 4th acoustical panel 5, the first band positioning ring type Metallic Spiral Wound Gasket 6,7, two hexagon socket cap head screws 8 of noise reduction lid, the first screw rod 9, the first nut 10, outlet end flange 11, the second band internal/external ring type spiral wound gasket 12, the 3rd band internal/external ring type spiral wound gasket 13, piping flange 14, the second nut 15, the second screw rod 16 and pipeline 17 etc.
When apparatus of the present invention (external Multipurpose silent device) are arranged on pipeline, it is example that acoustical panel adopts four.
Get the first acoustical panel 2, the second acoustical panel 3, the 3rd acoustical panel 4, the 4th acoustical panel 5 and put into successively sound attenuation 1, with noise reduction lid 7, the 4th acoustical panel 5 is compressed, between sound attenuation 1 and noise reduction lid 7, by the first band positioning ring type Metallic Spiral Wound Gasket 6, seal Leakage prevention; Outlet end flange 11 is provided with the second band internal/external ring type spiral wound gasket 12 with the entry end of sound attenuation 1, with screw rod 9, nut 10, connects fastening; Between piping flange 14 and noise reduction lid 7, be provided with the 3rd band internal/external ring type spiral wound gasket 13, with nut 15, screw rod 16, connect fastening; The through hole that screw rod 16 covers on 7 by noise reduction is screwed in the tapped hole of sound attenuation 1 right-hand member; Pipeline 17 is connected with piping flange 14.It is not fastening between described noise reduction lid 7 and sound attenuation 1, being provided with two hexagon socket cap head screw 8 roles, but prevents that noise reduction lid from coming off.
Described sound attenuation 1 left end is evenly equipped with some tapped holes, some tapped hole quantity is greatly corresponding with the flange of modulating valve outlet end with tapped hole diameter, described sound attenuation 1 right-hand member is evenly equipped with some tapped holes, and some tapped hole quantity is corresponding with piping flange with tapped hole diameter.
Described the first acoustical panel 2 is provided with bloop, and the aperture of bloop is Ф 2-Ф 4mm, and by certain matrix distribution, the pore diameter size of bloop is relevant according to the viscosity of fluid, and the diameter of the larger bloop of viscosity is larger, but is generally not more than Ф 6mm.
On described the first acoustical panel 2, the area summation of bloop is 1.1 times to 1.2 times of modulating valve drift diameter area.Described the second acoustical panel 3, the 3rd acoustical panel 4, the 4th acoustical panel 5 are respectively equipped with bloop; On described the 4th acoustical panel 5, hole area summation is 1.1 times to 1.2 times of previous the 3rd acoustical panel 4 bloop area summations.
The shape of described the first acoustical panel 2, the second acoustical panel 3, the 3rd acoustical panel 4, the 4th acoustical panel 5 is behind edge, intermediate thin.
In the present invention's (external Multipurpose silent device), the quantity of acoustical panel can specifically be adjusted according to the pressure reduction before and after valve, when being 10～15bar, uses pressure reduction an acoustical panel, when being 15～25bar, uses pressure reduction two acoustical panels, when pressure reduction is 25～35bar, use three acoustical panels, when pressure reduction is 35～45bar, use four acoustical panels.
Due to structural feature of the present invention, the inside nominal diameter of pipeline 17 is larger than the inside nominal diameter of valve.If the inside nominal diameter of pipeline 17 cannot change, can realize by one section of Concentric Reducers 18 transition.
The present invention is as an independently element existence, does not change the structure of modulating valve itself, so it can support the use with multiple modulating valve, such as single-seat adjusting valve, sleeve adjusting valve, V-type, regulates ball valve and butterfly valve etc.
Working principle of the present invention:
In valve industry, conventional pressure drop coefficient FL is defined in the number of throttling process kinetic energy loss.Be defined as follows:
P
1-P
2=F
L 2(P
1-P
c)
The absolute pressure of P1-entrance
P2-outlet pressure;
FL-pressure drop coefficient;
Pc-be necking down cross section, i.e. the static pressure at throttling speed peak place;
Pv-be the vapour tension of described liquid
Work as P
1-P
2>=F
l 2(P
1-P
v) time, necking down section can be vaporized, and easily produces cavitation phenomenon.
According to fluid mechanics law, the pressure loss is directly proportional to the ratio of the duplicate ratio discharge of pipes speed of throttling speed.This can be expressed as
K=(l-A1/A2) 2 and FL2=f(k),
A1-orifice size;
A2-pipeline area.
Orifice size is less than pipeline area, and FL2 is higher.
Sound pressure level represents the index of acoustic pressure size, with 20 times of the common logarithm of the acoustic pressure (p) of certain sound and the ratio of basic sound pressure level (p0), represents, i.e. and 20lgP/P0, unit is dB.So 20logA1, for example, 100 holes, rather than a single hole A1, will reduce 20log(A1 * 100-1/2)+10log(100)=10 decibels.Some modulating valve are installed some perforated tubes in line valve downstream, decompose flow.
External Multipurpose silent device of the present invention is a silencer element being independent of outside valve, does not change the structure of valve itself, can support the use with multiple regulating valve; Described a plurality of acoustical panel stack is arranged, and the bloop of acoustical panel is arranged, and can increase or reduce the quantity of acoustical panel and the size of bloop according to the pressure reduction before and after the viscosity of fluid and valve; The left and right end Conncetion cimension of external Multipurpose silent device and the flange being connected coupling, connect without transition.
Claims (7)
1. external Multipurpose silent device, is characterized in that: comprise sound attenuation (1), acoustical panel (2), the first band positioning ring type Metallic Spiral Wound Gasket (6), noise reduction lid (7), the first screw rod (9), the first nut (10), outlet end flange (11), the second band internal/external ring type spiral wound gasket (12), the 3rd band internal/external ring type spiral wound gasket (13), piping flange (14), the second nut (15) and the second screw rod (16); In described sound attenuation (1), put into 1-4 piece acoustical panel (2), with noise reduction lid (7), compress, between sound attenuation (1) and noise reduction lid (7), by the first band positioning ring type Metallic Spiral Wound Gasket (6), seal.
2. external Multipurpose silent device as claimed in claim 1, is characterized in that: described sound attenuation (1) left end is laid with some tapped holes.
3. external Multipurpose silent device as claimed in claim 1, is characterized in that: described sound attenuation (1) right-hand member is laid with some tapped holes.
4. external Multipurpose silent device as claimed in claim 1, is characterized in that: described acoustical panel (2) is provided with bloop, and the aperture of bloop is Ф 2-Ф 4mm, by certain matrix distribution.
5. external Multipurpose silent device as claimed in claim 4, is characterized in that: the aperture of the upper bloop of described acoustical panel (2) is not more than Ф 6mm.
6. external Multipurpose silent device as claimed in claim 1, is characterized in that: being shaped as behind edge of described acoustical panel (2), intermediate thin.
7. external Multipurpose silent device as claimed in claim 1, is characterized in that: between described noise reduction lid (7) and sound attenuation (1), be provided with hexagon socket cap head screw (8), prevent that noise reduction lid from coming off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588875.3A CN103591375A (en) | 2013-11-20 | 2013-11-20 | Externally-arranged multipurpose silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588875.3A CN103591375A (en) | 2013-11-20 | 2013-11-20 | Externally-arranged multipurpose silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103591375A true CN103591375A (en) | 2014-02-19 |
Family
ID=50081620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310588875.3A Pending CN103591375A (en) | 2013-11-20 | 2013-11-20 | Externally-arranged multipurpose silencer |
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|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747790A (en) * | 2014-07-16 | 2015-07-01 | 季永东 | Steam valve with multi-silencing-tube type silencer |
| CN108266590A (en) * | 2016-12-30 | 2018-07-10 | 艾默生过程管理调节技术公司 | For the noise muffler being used together with process control equipment |
| CN110296061A (en) * | 2019-06-19 | 2019-10-01 | 陈言钰 | Air compressor machine moisture content processing unit |
| CN110513532A (en) * | 2019-08-15 | 2019-11-29 | 浙江盾安禾田金属有限公司 | Valve muffler and electric expansion valve with the valve muffler |
| CN110985804A (en) * | 2019-12-30 | 2020-04-10 | 桐乡市锡良罐业有限公司 | Replaceable silencing mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059583A (en) * | 1999-08-23 | 2001-03-06 | Yamatake Corp | Fluid control valve |
| CN101625032A (en) * | 2009-08-05 | 2010-01-13 | 无锡卓尔阀业有限公司 | Special control valve for oxygen emptying |
| CN102979953A (en) * | 2012-11-16 | 2013-03-20 | 无锡智能自控工程股份有限公司 | Butterfly valve noise attenuation device |
| CN103375616A (en) * | 2012-04-23 | 2013-10-30 | 维士威（上海）控制阀门有限公司 | Novel speed reducing control valve |
| CN203628012U (en) * | 2013-11-20 | 2014-06-04 | 无锡智能自控工程股份有限公司 | External multipurpose silencer |
-
2013
- 2013-11-20 CN CN201310588875.3A patent/CN103591375A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059583A (en) * | 1999-08-23 | 2001-03-06 | Yamatake Corp | Fluid control valve |
| CN101625032A (en) * | 2009-08-05 | 2010-01-13 | 无锡卓尔阀业有限公司 | Special control valve for oxygen emptying |
| CN103375616A (en) * | 2012-04-23 | 2013-10-30 | 维士威（上海）控制阀门有限公司 | Novel speed reducing control valve |
| CN102979953A (en) * | 2012-11-16 | 2013-03-20 | 无锡智能自控工程股份有限公司 | Butterfly valve noise attenuation device |
| CN203628012U (en) * | 2013-11-20 | 2014-06-04 | 无锡智能自控工程股份有限公司 | External multipurpose silencer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747790A (en) * | 2014-07-16 | 2015-07-01 | 季永东 | Steam valve with multi-silencing-tube type silencer |
| CN108266590A (en) * | 2016-12-30 | 2018-07-10 | 艾默生过程管理调节技术公司 | For the noise muffler being used together with process control equipment |
| CN110296061A (en) * | 2019-06-19 | 2019-10-01 | 陈言钰 | Air compressor machine moisture content processing unit |
| CN110296061B (en) * | 2019-06-19 | 2023-06-20 | 陈言钰 | Water treatment device of air compressor |
| CN110513532A (en) * | 2019-08-15 | 2019-11-29 | 浙江盾安禾田金属有限公司 | Valve muffler and electric expansion valve with the valve muffler |
| JP2022543721A (en) * | 2019-08-15 | 2022-10-14 | 浙江盾安人工環境股▲ふん▼有限公司 | Valve silencer and electronic expansion valve having this valve silencer |
| JP7259071B2 (en) | 2019-08-15 | 2023-04-17 | 浙江盾安人工環境股▲ふん▼有限公司 | Valve silencer and electronic expansion valve having this valve silencer |
| CN110985804A (en) * | 2019-12-30 | 2020-04-10 | 桐乡市锡良罐业有限公司 | Replaceable silencing mechanism |
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Application publication date: 20140219 |