CN104307651A - Integrated rotary cavitating jet nozzle - Google Patents

Integrated rotary cavitating jet nozzle Download PDF

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Publication number
CN104307651A
CN104307651A CN201410566147.7A CN201410566147A CN104307651A CN 104307651 A CN104307651 A CN 104307651A CN 201410566147 A CN201410566147 A CN 201410566147A CN 104307651 A CN104307651 A CN 104307651A
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CN
China
Prior art keywords
cylindrical
jet
cylindrical outlet
cavitating
water jet
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Granted
Application number
CN201410566147.7A
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Chinese (zh)
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CN104307651B (en
Inventor
雷玉勇
杨涵
万霞
刘克福
蒋代君
张恕远
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Xihua University
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Xihua University
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Priority to CN201410566147.7A priority Critical patent/CN104307651B/en
Publication of CN104307651A publication Critical patent/CN104307651A/en
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Publication of CN104307651B publication Critical patent/CN104307651B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl

Abstract

The invention relates to an integrated rotary cavitating jet nozzle comprising a cylindrical inlet segment, a cylindrical resonant cavity, a cylindrical pore and a cylindrical outlet segment. The cylindrical outlet segment is provided with a plurality of intake tubes; bores of the intake tubes are tangent to a bore of the cylindrical outlet segment. The inner diameter of the intake tubes is half a difference between the inner diameter of the cylindrical outlet segment and the diameter of the cylindrical pore. The section of the bore of each intake tube is round, square, or in any special shape. The intake tubes can be axially distributed in multiple rows at the cylindrical outlet segment of a nozzle body. Compressed air is led into the intake tubes, the compressed air led in from the intake tubes enters in the tangent direction, air swirls surrounding a water jet are formed in the cylindrical outlet segment and drive the water jet to turn into a rotating vortex in the cylindrical outlet segment, and cavitating effect is further enhanced; meanwhile, cavitating bubbles are concentrated to the center of the water jet, energy of the cavitating water jet is more concentrated, the shear action of the jet upon a target is enhanced, and eroding capacity of the cavitating jet is greatly improved accordingly.

Description

A kind of centralized rotation Cavitation jet nozzle
Technical field
The present invention relates to Cavitation jet nozzle, be specifically related to centralized rotation Cavitation jet nozzle, can be used for that material surface cleans, eliminates rust, comes unstuck, surface peening and boring, cutting, broken rock etc.
Background technology
The water jet special process utilizes the Water projectile with very kinetic energy to carry out erosion material, thus realizes material cutting, belongs to high energy beam processing category.Water jet machining belongs to contactless " cold cut is cut ", mechanical stress, thermal deformation, heat affected area, thus becomes the optimum Cutting method to heat-sensitive material; Its adaptability is good, it is best in quality to cut, joint-cutting is narrow, spillage of material is few, and medium cost is low, clean, dustless in cutting process, nontoxic, environmental friendliness, is used widely in fields such as machine-building, Aero-Space, automobile, military project and potteries.
Cavitation jet is in high-speed water jet, make the saturated vapour pressure of local pressure lower than this place in fluid somewhere artificially, thus producing cavitation bubble in the jet, the partial high pressure produced during by controlling cavitation bubble and breaking on object, increases the erosion ability of its material greatly.
At present, cavitation jet technology has been successfully applied to material cutting and boring, the broken field such as rock and industry cleaning link.But in application process, there is many deficiencies in existing cavitation water jet nozzle, be mainly manifested in: the cavitation effect 1) for the organ tubular type Cavitation jet nozzle of cleaning is poor, and outlet plenum can not make water jet concentration of energy, and on the cross section of cavitating water jet, encircled energy is lower; 2) for cutting, traditional cavitation water jet nozzle of broken rock, its jet beam speed is low, energy does not concentrate and active area is large, low for weak effect when boring, cutting, broken rock, efficiency.
For the problems referred to above, applied fluid dynamics of the present invention is theoretical, has invented a kind of centralized rotation Cavitation jet nozzle.This type nozzle can be widely used in that material surface cleans, eliminates rust, comes unstuck, surface peening and boring, cutting, broken rock etc., has very high practical value.
Summary of the invention
The object of the invention is: for the deficiency of existing organ tubular type Cavitation jet nozzle, there is provided a kind of centralized rotation Cavitation jet nozzle, under equal conditions, the cavitation effect of centralized rotation Cavitation jet nozzle is better, and water jet energy is more concentrated, significantly improve the erosion ability of jet.At the same conditions, needed for water jet, pressure is lower, and energy consumption reduces, and efficiency of construction of simultaneously constructing is higher.
For completing above-mentioned purpose, the technical solution used in the present invention is:
A kind of centralized rotation Cavitation jet nozzle as shown in Figure 1, Figure 2, Figure 3 shows, it is made up of Cylindrical inlet section (3), cylindrical cavity (4), cylindrical holes (5) and cylindrical outlet section (6), nozzle body (1) circumferentially has multiple air inlet pipe (2), and air inlet pipe (2) passes into compressed air.
As shown in Figure 3, above-mentioned centralized rotation Cavitation jet nozzle, endoporus and cylindrical outlet section (6) endoporus of air inlet pipe (2) are tangent, and the internal diameter of air inlet pipe (2) is 1/2nd of the difference of cylindrical outlet section (6) internal diameter and cylindrical holes (5) internal diameter.
Above-mentioned centralized rotation Cavitation jet nozzle, the inner hole section shape of air inlet pipe (2) can be circle, square or abnormity arbitrarily, air inlet pipe (2) can the cylindrical outlet section (6) of nozzle body (1) vertically multiple row arrange.
As shown in Figure 2, when water (or other fluid) enters from Cylindrical inlet section (3), water jet is formed from cylindrical holes (5) injection through cylindrical cavity (4), water (or other fluid) entrance section through cylindrical holes (5), a pressure pulse is produced due to contraction, it reflexes to porch, superpose with the pressure pulse of incoming flow, form standing wave, produce when frequency of oscillation is consistent with the eigenfrequency of jet and resonate, produce collar vortex and the cavitation phenomenon of large scale in the porch of cylindrical holes (5), form cavitating water jet.
As shown in Figure 2 and Figure 3, in cylindrical outlet section (6), the compressed air introduced from multiple air inlet pipe (2) tangentially enters, the gas cyclone around water jet is formed in nozzle cylindrical outlet section, water jet is driven to produce rotating vortex in cylindrical outlet section (6), cavitation effect is strengthened further, make cavitation bubble in water jet center set simultaneously, cavitating water jet energy is more concentrated, on the other hand, add the shear action of jet to target, thus significantly improve the erosion ability of cavitating water jet.
The present invention's remarkable advantage is compared with prior art: centralized rotation Cavitation jet nozzle, on traditional Cavitation jet nozzle basis, increase cylindrical outlet section, and in nozzle cylindrical outlet section circumferentially some air inlet pipe, compressed air is introduced from multiple air inlet pipe, the gas cyclone around water jet is formed in nozzle cylindrical outlet section, water jet is driven to produce rotating vortex in cylindrical outlet section, cavitation effect is strengthened further, make cavitation bubble concentrate to water jet axle center simultaneously, cavitating water jet energy is more concentrated, on the other hand, add the shear action of jet to target, significantly improve the erosion ability of cavitation jet, compared with traditional cavitation water jet nozzle, its erosion ability can improve 8-12 doubly, this nozzle can be widely used in material surface cleaning, rust cleaning, come unstuck, surface peening and boring, cutting, broken rock etc.
Accompanying drawing explanation
Fig. 1 is centralized rotation Cavitation jet nozzle structural representation.
Fig. 2 is centralized rotation Cavitation jet nozzle sectional view.
Fig. 3 is the right view of Fig. 1.
Fig. 4 is that centralized rotation Cavitation jet nozzle multiple row air inlet pipe arranges schematic diagram.
Detailed description of the invention
Embodiment 1:
See Fig. 1, Fig. 2 and Fig. 3, centralized rotation Cavitation jet nozzle is connected with water under high pressure pipeline by entrance screw thread, nozzle inner flow passage is by Cylindrical inlet section (3), cylindrical cavity (4), cylindrical holes (5) and cylindrical outlet section (6) composition, nozzle body (1) circumferentially has multiple air inlet pipe (2), air inlet pipe (2) passes into compressed air, endoporus and cylindrical outlet section (6) endoporus of air inlet pipe (2) are tangent, the internal diameter of air inlet pipe (2) is 1/2nd of the difference of cylindrical outlet section (6) internal diameter and cylindrical holes (5) internal diameter.
See Fig. 2, when water (or other fluid) enters from Cylindrical inlet section (3), water jet is formed from cylindrical holes (5) injection through cylindrical cavity (4), water (or other fluid) entrance section through cylindrical holes (5), a pressure pulse is produced due to contraction, it reflexes to porch, superpose with the pressure pulse of incoming flow, form standing wave, produce when frequency of oscillation is consistent with the eigenfrequency of jet and resonate, produce collar vortex and the cavitation phenomenon of large scale in the porch of cylindrical holes (5), form cavitating water jet.
See Fig. 2, Fig. 3, in cylindrical outlet section (6), the compressed air introduced from multiple air inlet pipe (2) tangentially enters, the gas cyclone around water jet is formed in nozzle cylindrical outlet section, water jet is driven to produce rotating vortex in cylindrical outlet section (6), cavitation effect is strengthened further, make cavitation bubble in water jet center set simultaneously, cavitating water jet energy is more concentrated, on the other hand, add the shear action of jet to target, thus significantly improve the erosion ability of cavitating water jet.
Above-mentioned centralized rotation Cavitation jet nozzle, the inner hole section shape of air inlet pipe (2) can be circle, square or abnormity arbitrarily.
See Fig. 4, air inlet pipe (2), (7) can in the cylindrical outlet section (6) of nozzle body (1) multiple row layouts vertically.
Above-described embodiment is described further foregoing of the present invention, but this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to above-described embodiment.All technology realized based on foregoing all belong to scope of the present invention.

Claims (3)

1. a centralized rotation Cavitation jet nozzle, it is characterized in that: it is made up of Cylindrical inlet section (3), cylindrical cavity (4), cylindrical holes (5) and cylindrical outlet section (6), nozzle body (1) circumferentially has multiple air inlet pipe (2), and air inlet pipe (2) passes into compressed air.
2. centralized rotation Cavitation jet nozzle as claimed in claim 1, it is characterized in that: endoporus and cylindrical outlet section (6) endoporus of air inlet pipe (2) are tangent, and the internal diameter of air inlet pipe (2) is 1/2nd of the difference of cylindrical outlet section (6) internal diameter and cylindrical holes (5) internal diameter.
3. centralized rotation Cavitation jet nozzle as claimed in claim 1, it is characterized in that: the inner hole section shape of air inlet pipe (2) can be circle, square or abnormity arbitrarily, air inlet pipe (2) can the cylindrical outlet section (6) of nozzle body (1) vertically multiple row arrange.
CN201410566147.7A 2014-10-23 2014-10-23 A kind of centralized rotation Cavitation jet nozzle Expired - Fee Related CN104307651B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410566147.7A CN104307651B (en) 2014-10-23 2014-10-23 A kind of centralized rotation Cavitation jet nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410566147.7A CN104307651B (en) 2014-10-23 2014-10-23 A kind of centralized rotation Cavitation jet nozzle

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CN104307651A true CN104307651A (en) 2015-01-28
CN104307651B CN104307651B (en) 2016-08-24

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105619171A (en) * 2016-02-29 2016-06-01 济南大学 Variable-angle vortex nozzle device for cutting cooling liquid
CN107326971A (en) * 2017-08-21 2017-11-07 李兴荣 Cavitation energy highly effective tap
CN108080159A (en) * 2017-12-25 2018-05-29 浙江工业大学 A kind of high pressure cavitation jet combines nozzle
CN108392283A (en) * 2017-02-07 2018-08-14 松下知识产权经营株式会社 Mouth cavity flushing device and its nozzle
CN112743460A (en) * 2020-12-31 2021-05-04 广州大学 Rotary nozzle for strengthening grinding processing
CN113019722A (en) * 2020-12-03 2021-06-25 中国舰船研究设计中心 Multi-stage rotational flow cavitation system with self-cleaning function
CN113210151A (en) * 2021-01-25 2021-08-06 武汉大学 Universal cavitation jet nozzle
CN114800060A (en) * 2022-05-25 2022-07-29 广东技术师范大学 Chemical magneto-rheological polishing device and method based on eddy current cavitation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2059182U (en) * 1988-12-11 1990-07-11 石油大学 Accordion type spray nozzle for high pressure efflux
JPH05212317A (en) * 1992-02-05 1993-08-24 Sugino Mach Ltd Nozzle for sudden expanding type submerged jet
CN101293230A (en) * 2007-04-23 2008-10-29 巨东英 Aeration type nozzle and adjustable cavitating water ball blasting method
JP2009202053A (en) * 2008-02-26 2009-09-10 Izumi Kosho Kk Method and apparatus for generation of gas/liquid-two-phase flow
KR20100082634A (en) * 2009-01-09 2010-07-19 유기철 Scale removal device for water pipes
CN102513237A (en) * 2011-12-28 2012-06-27 天津海源流体工程技术有限公司 Cavitation type ultrahigh pressure water hammer type water gun sprayer
CN203847007U (en) * 2014-04-10 2014-09-24 中国石油集团渤海石油装备制造有限公司 Natural vibration cavitation impulse type nozzle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2059182U (en) * 1988-12-11 1990-07-11 石油大学 Accordion type spray nozzle for high pressure efflux
JPH05212317A (en) * 1992-02-05 1993-08-24 Sugino Mach Ltd Nozzle for sudden expanding type submerged jet
CN101293230A (en) * 2007-04-23 2008-10-29 巨东英 Aeration type nozzle and adjustable cavitating water ball blasting method
JP2009202053A (en) * 2008-02-26 2009-09-10 Izumi Kosho Kk Method and apparatus for generation of gas/liquid-two-phase flow
KR20100082634A (en) * 2009-01-09 2010-07-19 유기철 Scale removal device for water pipes
CN102513237A (en) * 2011-12-28 2012-06-27 天津海源流体工程技术有限公司 Cavitation type ultrahigh pressure water hammer type water gun sprayer
CN203847007U (en) * 2014-04-10 2014-09-24 中国石油集团渤海石油装备制造有限公司 Natural vibration cavitation impulse type nozzle

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105619171A (en) * 2016-02-29 2016-06-01 济南大学 Variable-angle vortex nozzle device for cutting cooling liquid
CN108392283A (en) * 2017-02-07 2018-08-14 松下知识产权经营株式会社 Mouth cavity flushing device and its nozzle
CN107326971A (en) * 2017-08-21 2017-11-07 李兴荣 Cavitation energy highly effective tap
CN108080159A (en) * 2017-12-25 2018-05-29 浙江工业大学 A kind of high pressure cavitation jet combines nozzle
CN113019722A (en) * 2020-12-03 2021-06-25 中国舰船研究设计中心 Multi-stage rotational flow cavitation system with self-cleaning function
CN113019722B (en) * 2020-12-03 2022-12-06 中国舰船研究设计中心 Multi-stage rotational flow cavitation system with self-cleaning function
CN112743460A (en) * 2020-12-31 2021-05-04 广州大学 Rotary nozzle for strengthening grinding processing
CN112743460B (en) * 2020-12-31 2022-04-15 广州大学 Rotary nozzle for strengthening grinding processing
CN113210151A (en) * 2021-01-25 2021-08-06 武汉大学 Universal cavitation jet nozzle
CN114800060A (en) * 2022-05-25 2022-07-29 广东技术师范大学 Chemical magneto-rheological polishing device and method based on eddy current cavitation

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