WO2023093507A1 - Silencieux d'entrée d'une pompe à écoulement axial - Google Patents

Silencieux d'entrée d'une pompe à écoulement axial Download PDF

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Publication number
WO2023093507A1
WO2023093507A1 PCT/CN2022/130221 CN2022130221W WO2023093507A1 WO 2023093507 A1 WO2023093507 A1 WO 2023093507A1 CN 2022130221 W CN2022130221 W CN 2022130221W WO 2023093507 A1 WO2023093507 A1 WO 2023093507A1
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WO
WIPO (PCT)
Prior art keywords
muffler
section
inlet
blade
flow pump
Prior art date
Application number
PCT/CN2022/130221
Other languages
English (en)
Chinese (zh)
Inventor
张帆
祝路峰
石小涛
陈轲
袁寿其
张金凤
许正萱
Original Assignee
江苏大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏大学 filed Critical 江苏大学
Publication of WO2023093507A1 publication Critical patent/WO2023093507A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Definitions

  • the invention relates to the technical field of hydraulic fluid machinery design, in particular to an inlet muffler of an axial flow pump.
  • the purpose of the present invention is to overcome the deficiencies in the prior art and provide an inlet muffler for axial flow pumps, which effectively reduces the noise intensity released by traditional axial flow pumps into waters and reduces the damage caused by noise to fish , improving the ecological environment of the water area and benefiting the protection of biodiversity.
  • An inlet muffler for an axial flow pump which includes an inlet horn section, an impeller section, a guide vane section, an outlet elbow section, an inlet pipe, a muffler, an inlet horn section, an impeller section, a guide vane section, and an outlet elbow section along the The fluid directions are connected sequentially.
  • the upstream end of the inlet horn section is connected to an inlet pipe, and a muffler is arranged inside the inlet pipe.
  • the muffler includes muffler blades, and the muffler blades are single blades or multiple blades.
  • the muffler blade is composed of an inlet section, an arc-shaped transition section and an outlet section connected in sequence.
  • the inlet section of the muffler blade is a straight plate and is perpendicular to the direction of the incoming flow
  • the arc-shaped transition section of the muffler blade is two sections. Curved surface, the arc transition section is "S" curved, and the outlet section is a straight plate parallel to the outlet flow.
  • the lateral length of the muffler blade in a certain circumferential cross-section development is L
  • the axial length of the circumferential cross-section development is H.
  • the muffler includes a plurality of muffler blades and a hub, the plurality of muffler blades are evenly arranged on the outer circumference of the hub, and the upstream end of the hub is provided with a first guide part, the first guide part is an arc-shaped guide Flow part, the downstream end of the hub is provided with a second guide part, the second guide part includes a tapered part and an arc part, the arc part is located at the downstream end of the tapered part, and the outer peripheral surface of the second guide part is arranged on A plurality of grooves, the plurality of grooves are evenly or unevenly distributed on the outer peripheral surface of the second flow guiding part, and the grooves are circular grooves.
  • the radial inner edge or radial root of the muffler blade is provided with a plurality of communication holes, and the plurality of communication holes communicate with the two sides of the muffler blade respectively; the plurality of communication holes are distributed along the length direction of the muffler blade,
  • the communication holes are generally rectangular or semicircular communication holes.
  • outer diameter Dh of the hub is 1/5-1/3 of the outer diameter Ds of the muffler blade.
  • the number of blades of the muffler is 3-4.
  • the muffler blade is composed of an inlet section, an arc-shaped transition section and an outlet section connected in sequence, which can not only ensure the overall performance of the axial flow pump, but also ensure a good noise reduction effect.
  • the present invention can effectively reduce the noise in the transition water flow area between the muffler blade and the inlet horn section through the design of the second guide part and multiple grooves, and the multiple grooves have a certain effect of noise reflection or diffusion on the noise inhibition.
  • the present invention can balance or reduce pressure fluctuations on both sides of the blade through the design of a plurality of communication holes, thereby reducing noise generated by pressure fluctuations.
  • the inlet muffler of an axial flow pump of the present invention can effectively suppress the noise generated in the impeller from propagating from the axial flow pump to the water area, greatly reducing the impact of noise on fish,
  • the imported silencer is of great significance to the protection of aquatic organisms and the ecological environment.
  • Fig. 1 is the single vane structure schematic diagram of the inlet muffler of the axial flow pump of the present invention
  • Fig. 2 is a multi-blade structure schematic diagram of the inlet muffler of the axial flow pump of the present invention
  • Fig. 3 is a schematic diagram of the expansion of the circumferential section of the blade of the single-blade muffler of the present invention
  • Fig. 4 is a schematic diagram of the expansion of the circumference section of the blades of the multi-blade muffler of the present invention.
  • Fig. 5 is a structural schematic diagram of another embodiment of the multi-blade muffler of the axial flow pump of the present invention.
  • Fig. 6 is a structural schematic diagram of a single-vane muffler of an axial flow pump of the present invention.
  • Fig. 7 is a schematic structural diagram of a three-dimensional model of a single-blade muffler of an axial flow pump of the present invention.
  • Fig. 8 is a structural schematic diagram of a three-dimensional model of a multi-vane muffler of an axial flow pump of the present invention.
  • an inlet muffler of an axial flow pump includes an inlet horn section 1, an impeller section 2, a guide vane section 3, an outlet elbow section 4, an inlet pipe 5, a muffler 6, and an inlet horn section 1.
  • the impeller section 2, the guide vane section 3, and the outlet elbow section 4 are connected sequentially along the fluid direction.
  • the upstream end of the inlet horn section 1 is connected to the inlet pipe 5, and the inlet pipe 5 is provided with a muffler 6.
  • the muffler 6 includes a muffler
  • the device blade 61, the muffler blade 61 is a single blade or multiple blades.
  • the single-vane inlet muffler is composed of an inlet section 611, an arc-shaped transition section 612 and an outlet section 613 connected in sequence.
  • the inlet section 611 of the muffler blade 61 is a straight plate and perpendicular to the direction of the incoming flow, which mainly plays the role of guiding the liquid flow into the muffler;
  • the arc transition section 612 of the muffler blade 61 is a two-section curved surface, which mainly plays the role of reflecting noise and increasing The effect of noise loss along the way ultimately reduces the noise at the inlet of the axial flow pump.
  • the parameters of the blade will be described below with an expanded view of a certain circumferential section of the single-blade muffler blade 61 .
  • the blade inlet section 611 is a straight plate and parallel to the inlet liquid flow, which is to introduce the liquid flow into the blade;
  • the arc-shaped transition section 612 is curved in an S shape, which is to better prevent the noise generated in the impeller from passing through the muffler And spread.
  • the slope of the arc transition section at the origin O should not be too small. Although a too small slope can better reflect the noise generated in the impeller and have a better noise reduction effect, it will have a negative impact on the performance of the axial flow pump.
  • the slope angle a of the transition section at the origin is optimal at 30°-60°, which can not only ensure the overall performance of the axial flow pump, but also ensure a good noise reduction effect.
  • the outlet section 613 of the blade is a straight plate parallel to the outlet liquid flow, which is to better introduce the liquid flow to the impeller inlet; the outlet section 613 is a straight plate, which mainly introduces the liquid flow in the muffler vertically to the impeller inlet
  • the straight plate also has the function of eliminating the pre-swirl of the impeller inlet, so it can improve the overall performance of the axial flow pump, that is, to a certain extent, the lift and efficiency of the axial flow pump are improved, and the tendency of the saddle area of the axial flow pump is effectively alleviated.
  • the transverse length of the expanded view of the circumferential section of the muffler blade 61 is L, so that the single-blade muffler can reflect the noise generated in the impeller in the circumferential direction; the expanded view of the circumferential section of the blade
  • the axial length of H is H, and H should not be too large. Excessive axial size will increase the size of the silencer, thereby increasing the overall size of the axial flow pump, thereby increasing the production cost of the axial flow pump.
  • the inlet section 612 of the muffler blade 61 is a straight plate parallel to the inlet liquid flow, which is for introducing the liquid flow into the blade.
  • the arc transition section 612 is curved in an S shape, which is to better prevent the noise generated in the impeller from passing through the muffler.
  • the slope of the arc transition section at the origin O should not be too small. Although a too small slope can better reflect the noise generated in the impeller and have a better noise reduction effect, it will have a negative impact on the performance of the axial flow pump.
  • the slope angle a of the arc transition section at the origin O is optimal at 30°-60°, which can not only ensure the overall performance of the axial flow pump, but also ensure a good noise reduction effect.
  • the blade outlet section 613 is a straight plate parallel to the outlet liquid flow, which is to better introduce the liquid flow to the impeller inlet; the outlet section 613 is a straight plate, which mainly introduces the liquid flow in the muffler vertically to the impeller inlet In addition, the straight plate also has the function of eliminating the pre-swirl of the impeller inlet, so it can improve the overall performance of the axial flow pump, that is, to a certain extent, the head and efficiency of the axial flow pump are improved, and the tendency of the saddle area of the axial flow pump is effectively alleviated.
  • the transverse length of the expanded view of the circular section of the blade is L1 (L), and the product of L1 and the number of blades Z is equal to the circumference of the section.
  • the noise generated in the impeller is reflected for better sound attenuation.
  • the axial length H1(H) of the expanded view of the circular cross-section of the muffler blade 61 should not be too large. An excessively large axial dimension will increase the size of the muffler, thereby increasing the overall size of the axial flow pump, thereby increasing the axial flow pump. Cost of production.
  • the muffler blades 61 is the best when the number of leaves is 3-4.
  • the muffler 6 includes a plurality of muffler blades 61 and a hub 62, and a plurality of muffler blades 61 are evenly arranged on the periphery of the hub 62, and the upstream end of the hub 62 is provided with a first The guide part 63, the first guide part 63 is a circular arc guide part, the downstream end of the hub 62 is provided with a second guide part 64, the second guide part 64 includes a tapered part and an arc part, the arc Located at the downstream end of the tapered part, the outer peripheral surface of the second guide part 64 is arranged on a plurality of grooves 65, and the plurality of grooves 65 are evenly or unevenly distributed on the outer peripheral surface of the second guide part 64, and the grooves 65 is a circular groove.
  • the present invention can effectively reduce the noise in the transition water flow area between the muffler blade 61 and the inlet horn section 1 through the design of the second guide part 64 and a plurality of grooves 65, and the plurality of grooves 65 have a certain effect on noise. Inhibition of noise reflection or diffusion.
  • the radially inner edge or radial root of the muffler blade 61 is provided with a plurality of communication holes 66, and the plurality of communication holes 66 communicate with the two sides of the muffler blade 61 respectively; Distributed along the length direction, the communication holes 66 are generally rectangular or semicircular communication holes.
  • the present invention can balance or reduce the pressure fluctuations on both sides of the blade 61 through the design of the plurality of communication holes 66, thereby reducing the noise generated by the pressure fluctuations.
  • the outer diameter Dh of the hub 62 is 1/5-1/3 of the outer diameter Ds of the muffler blade 61.
  • An excessively large hub diameter will block the inlet liquid flow, and excessive A small hub diameter will greatly reduce the structural strength of the muffler blade.
  • the muffler blade 61 is composed of an inlet section 611, an arc transition section 612 and an outlet section 613 connected in sequence, which can not only ensure the overall performance of the axial flow pump, but also ensure good Noise reduction effect.
  • the present invention can effectively reduce the noise in the transition water flow area between the muffler blade 61 and the inlet horn section 1 through the design of the second guide part 64 and a plurality of grooves 65, and the plurality of grooves 65 have a certain effect on noise. Inhibition of noise reflection or diffusion.
  • the present invention can balance or reduce the pressure fluctuations on both sides of the blade 61 through the design of the plurality of communication holes 66, thereby reducing the noise generated by the pressure fluctuations.
  • the inlet muffler of an axial flow pump of the present invention can effectively suppress the noise generated in the impeller from propagating from the axial flow pump to the water area, greatly reducing the impact of noise on fish,
  • the imported silencer is of great significance to the protection of aquatic organisms and the ecological environment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un silencieux d'entrée d'une pompe à écoulement axial, le silencieux d'entrée comprenant une section cornet d'entrée (1), une section roue (2), une section aube directrice (3), une section tuyau coudé de sortie (4), un tuyau d'entrée (5) et un corps de silencieux (6). Une extrémité amont de la section cornet d'entrée (1) est reliée au tuyau d'entrée (5) ; le corps de silencieux (6) est agencé dans le tuyau d'entrée (5) ; le corps de silencieux (6) comprend une aube de silencieux (61) ; une ou plusieurs aubes de silencieux (61) sont prévues ; et chaque aube de silencieux (61) est formée au moyen de la liaison d'une section d'entrée (611), d'une section de transition bombée (612) et d'une section de sortie (613) dans l'ordre, la section d'entrée (611) de l'aube de silencieux (61) étant une plaque droite et étant perpendiculaire à un sens d'écoulement entrant ; la section de transition bombée (612) de l'aube de silencieux (61) étant composée de deux surfaces incurvées, la section de transition bombée (612) étant courbée en forme de 'S' ; et la section de sortie (613) étant une plaque droite et étant parallèle à un écoulement de liquide sortant.
PCT/CN2022/130221 2021-11-24 2022-11-07 Silencieux d'entrée d'une pompe à écoulement axial WO2023093507A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111405177.6 2021-11-24
CN202111405177.6A CN114183405B (zh) 2021-11-24 2021-11-24 一种轴流泵的进口消音器

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WO2023093507A1 true WO2023093507A1 (fr) 2023-06-01

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114183405B (zh) * 2021-11-24 2023-05-05 江苏大学 一种轴流泵的进口消音器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210564A (zh) * 2006-12-25 2008-07-02 上海东方泵业(集团)有限公司 一种配用直联式水冷电机的立式轴流泵
CN201696356U (zh) * 2010-04-26 2011-01-05 浙江志江风机有限公司 内置式锥圆型消声装置
WO2018182290A1 (fr) * 2017-03-28 2018-10-04 주식회사 이엔테크 Silencieux de générateur
CN108860539A (zh) * 2018-07-23 2018-11-23 山东韩德节能设备有限公司 一种轴流泵式螺旋桨
CN110043477A (zh) * 2019-05-23 2019-07-23 高邮环流泵业有限公司 新型轴流泵
CN209469590U (zh) * 2018-12-25 2019-10-08 德能泵业（天津）有限公司 一种卧式潜水轴流泵
CN110454408A (zh) * 2019-09-18 2019-11-15 安徽奥利威泵阀机械有限公司 一种具有减噪功能的屏蔽泵
CN212407100U (zh) * 2020-08-12 2021-01-26 张家港市众兴成特种装备有限公司 一种低噪音轴流式风机
CN114183405A (zh) * 2021-11-24 2022-03-15 江苏大学 一种轴流泵的进口消音器

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210564A (zh) * 2006-12-25 2008-07-02 上海东方泵业(集团)有限公司 一种配用直联式水冷电机的立式轴流泵
CN201696356U (zh) * 2010-04-26 2011-01-05 浙江志江风机有限公司 内置式锥圆型消声装置
WO2018182290A1 (fr) * 2017-03-28 2018-10-04 주식회사 이엔테크 Silencieux de générateur
CN108860539A (zh) * 2018-07-23 2018-11-23 山东韩德节能设备有限公司 一种轴流泵式螺旋桨
CN209469590U (zh) * 2018-12-25 2019-10-08 德能泵业（天津）有限公司 一种卧式潜水轴流泵
CN110043477A (zh) * 2019-05-23 2019-07-23 高邮环流泵业有限公司 新型轴流泵
CN110454408A (zh) * 2019-09-18 2019-11-15 安徽奥利威泵阀机械有限公司 一种具有减噪功能的屏蔽泵
CN212407100U (zh) * 2020-08-12 2021-01-26 张家港市众兴成特种装备有限公司 一种低噪音轴流式风机
CN114183405A (zh) * 2021-11-24 2022-03-15 江苏大学 一种轴流泵的进口消音器

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CN114183405A (zh) 2022-03-15

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