CN106964611A - Compound cavitation washer for eliminating sludge in pipe - Google Patents

Compound cavitation washer for eliminating sludge in pipe Download PDF

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Publication number
CN106964611A
CN106964611A CN201710334512.5A CN201710334512A CN106964611A CN 106964611 A CN106964611 A CN 106964611A CN 201710334512 A CN201710334512 A CN 201710334512A CN 106964611 A CN106964611 A CN 106964611A
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CN
China
Prior art keywords
nozzle
cavitation
hole
cleaning
blade
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Granted
Application number
CN201710334512.5A
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Chinese (zh)
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CN106964611B (en
Inventor
孙红镱
马文琦
陈东奇
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Dalian Maritime University
Harbin University
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Dalian Maritime University
Harbin University
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Priority to CN201710334512.5A priority Critical patent/CN106964611B/en
Publication of CN106964611A publication Critical patent/CN106964611A/en
Application granted granted Critical
Publication of CN106964611B publication Critical patent/CN106964611B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/032Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/04Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes

Abstract

The invention discloses a kind of compound cavitation washer for eliminating sludge in pipe, including leaf cleaning structure and nozzle, described leaf cleaning structure and nozzle are connected as one by self-locking thread;Described leaf cleaning structure includes two groups of blades of internal layer blade and outer blade, and described internal layer blade is together with outer blade interfolded;Described nozzle is made up of entrance cavity, cavitation resonator and jet aperture.Due to being cleaned present invention employs cavitation mechanism to pipeline, considerably beyond the cleaning efficiency of conventional clean means.And it is compound using blade cavitation washer and cavitating nozzle two-stage, improve the cavitation effect of single-stage cavitation washer.Because the present invention uses compound cavitation washer, required driving pressure is less than 10MPa, than traditional the Technolgy of High Pressure Water jet Cleaning danger reduction.Due to the cavitation washer that the present invention is used, equipment is simple, and cost is relatively low, is reduced than cost needed for traditional PIG cleaning techniques.

Description

Compound cavitation washer for eliminating sludge in pipe
Technical field
The present invention relates to oil field pipe descalling technique, particularly a kind of cavitation washer for eliminating sludge in pipe.
Background technology
In recent years, strong base ternary composite driving oil systems are that oil field realizes Sustainable high yield stable yields, but strong base ternary composite driving The chemical reaction that rock forming mineral occurs in middle highly basic and stratum, causes the corrosion of oil reservoirs rock and comes off, the indissoluble such as calcium, silicon Ion is deposited during pipeline transportation forms complicated mixing dirt, and mixing dirt can cause the blocking of oil field pipe, seriously shadow Oil recovery efficiency is rung, economic loss is caused.Therefore, calcium, the scale removal new technology of silicon mixing dirt in research oil field pipe, improve ternary and answer The rheological property of oil displacement system is closed, production efficiency is improved, it is significant.
Traditional eliminating sludge in pipe method includes chemically and physically two major class.Chemical method occurs using chemical substance with dirt Chemical reaction, dissolves dirt.Due to the use of chemicals in chemical cleaning, cause environmental pollution, be detrimental to health and rotten The problems such as losing pipeline, constrains the development of chemical method.Physical method rely primarily on extraneous energy effect produce hitting power and Pressure surge removes pipe scale, it crushed, come off, mainly including high-pressure water jet, cavitation, machinery, PIG, sandblasting etc.. At present, the eliminating sludge in pipe method such as conventional high-pressure water jet, chemistry, sandblasting, microorganism, runs into Practical Project and is difficult to gram The problems such as pipeline turning, pipeline reducing diameter and the On Line Foul Removing Technology of clothes, after causing that scale removal is not thorough, interior anticorrosive coating film is uneven etc. Really, more it is difficult to clean off particularly with the dirty matter of complexity under the conditions of strong base ternary composite driving.
Current pipeline cleaning major way includes:High-pressure water jet, PIG cleaning methods and chemical cleaning method.These are clear Wash mode and all there are some shortcomings:
1st, pressure needed for high-pressure water jet is higher, dangerous larger.
2nd, PIG cleaning methods equipment is expensive, and cost is higher.
3rd, chemical cleaning method toxicity is larger, pollutes environment.
The content of the invention
To solve the above mentioned problem that prior art is present, the present invention to design a kind of safe, efficient, environmental protection and The compound cavitation washer for eliminating sludge in pipe of low cost.
To achieve these goals, technical scheme is as follows:
For the compound cavitation washer of eliminating sludge in pipe, including leaf cleaning structure and nozzle, described leaf cleaning Structure and nozzle are connected as one by self-locking thread;
Described leaf cleaning structure includes two groups of blades of internal layer blade and outer blade, described internal layer blade and outer layer Blade stagger is stacked together;Described leaf cleaning structure is shaped into the bowl structure with two-fold bending angle by bending, And meet bending angle θ12
Described nozzle is made up of entrance cavity, cavitation resonator and jet aperture;Entrance cavity diameter and cavitation resonator Internal diameter is 1.8-2.1 than scope;Cavitation resonator diameter is 3.1-3.3 than scope with jet hole diameter;
Described leaf cleaning structure inner chamber is fitted with pressure strip;Described nozzle is cavitating nozzle.
Further, the jet exit of described jet aperture is taper hole, and taper hole cone angle scope is 120 ° -150 °.
Further, described pressure strip is fitted with leaf cleaning structure inner chamber, using highly elastic material.
Further, the neck that described leaf cleaning structure and nozzle are also opened by outer nozzle wall face is attached.
Further, described nozzle center's through hole has three different diameters, a diameter of D of epimere through hole, stage casing A diameter of D of through holeS, hypomere through hole a diameter of d, the diameter Relationship of its stage casing through hole and epimere through hole is:(D/DS)2For 3.2-4.5, the diameter Relationship of epimere through hole and hypomere through hole is:(D/d)2For 10-11.
Further, described nozzle and pressure strip are solid by self-locking nut, outer nozzle wall shoulder, Upper gasket and lower gasket It is scheduled in leaf cleaning structure, described Upper gasket is located at pressure strip intracavity bottom, lower gasket and is located at leaf cleaning structure appearance Face bottom.
Operation principle of the present invention is as follows:When the present invention uses aqueous medium to be used as its working media.During work, leaf cleaning knot Structure is fitted by elasticity with the dirty matter in pipeline, and forms narrow throttling space.It can be produced largely by this region when to flow Vacuole group, and huge impulsive force produced by bubble collapse reach and remove the purpose of dirty matter.
Compared with prior art, the invention has the advantages that:
1st, the present invention is a kind of brand-new cleaning method, is produced using cavitation bubble, the high temperature for the process that crumbles and fall, high pressure are acted on In fouled surfaces to be cleaned, it is set to decompose, crush so as to reach the purpose of cleaning, its cleaning pressure is low, equipment simple, can be very well The complicated pipeline of suitable bending, with good cleaning performance, and study discovery cavitation hitting power energy reinforcement material surface Performance, the time of the next fouling of delay.
2nd, the present invention has the advantage in the main performance index of oil field pipe recovery technique.As cavitation jet basis is ground That studies carefully deepens constantly, and the present invention will be by extensively in oilfield industrialization promotion, such as eliminating sludge in pipe, de-plugging of well, pipeline material Reinforcing, oily waste water treatment etc..
3rd, due to being cleaned present invention employs cavitation mechanism to pipeline, the cleaning considerably beyond conventional clean means is imitated Rate.And it is compound using blade cavitation washer and cavitating nozzle two-stage, improve the cavitation effect of single-stage cavitation washer.
4th, because the present invention uses compound cavitation washer, required driving pressure is less than 10MPa, than traditional water under high pressure Jet flow cleaning technological danger is reduced.
5th, due to the cavitation washer that the present invention is used, equipment is simple, and cost is relatively low, than traditional PIG cleaning techniques institute Cost is needed to reduce.
6th, the present disclosure additionally applies for the descaling rinsing of other field pipeline.
Brief description of the drawings
Fig. 1 is the leaf cleaning device graphics of two groups of interfoldeds
Fig. 2 is the non-bent for shaping schematic diagram of single group blade.
Fig. 3 is schematic diagram of shaping after single group blade bending.
Fig. 4 is cavitating nozzle schematic diagram.
Fig. 5 is pressure strip schematic diagram.
Fig. 6 is the compound cavitation cleaner structure schematic diagram of the present invention
In Fig. 6:1- internal layer blades, 2- outer blades, 3- nozzles, 4- pressure strips, 5- Upper gaskets, 6- lower gaskets, 7- self-lockings Nut.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
As shown in figures 1 to 6:The main body of the present invention is the leaf cleaning structure shown in Fig. 1-3, in the upper of leaf cleaning structure End under conditions of bending angle, enables bending leaf area by producing cavitation effect with the throttleng surface that wall is formed Quick to produce cavitation, lower bending leaf area vacuole can quickly vanish.
It is illustrated in figure 3 bending angle θ1, lower bending angle θ2Leaf cleaning structure, using different vertical folding bent angles, Upper bending angle θ1When smaller, orifice size is smaller, can produce more cavitation bubbles.And lower bending angle θ2It is larger, it can make to be produced Raw cavitation bubble is quickly crumbled and fall, and is produced larger pressure pulse and microjet, is taken out stains.
By attaching nut 7 shown in Fig. 4 being that cavitating nozzle 3 and the pressure strip 4 shown in Fig. 5 are connected to leaf cleaning knot On structure, the nozzle 3 shown in Fig. 4 has upper, middle and lower segment through hole, and diameter is respectively D, DS、d.The hypomere through hole of nozzle 3 is to penetrate Discharge orifice, is cleaned by jet orifice to pipeline;Cavitation resonator is formed in the stage casing through hole of nozzle 3, this is imitated to produce cavitation Really topmost chamber;The epimere through hole of nozzle 3 is the entrance cavity of fluid, and the inlet diameter of fluid feeding cavity is maximum, is easy to stream The inflow of body, it is engaged with leaf cleaning structure and its inlet flow rate;In order to be connected with leaf cleaning structure, by shoulder come Fixed axial location.
As shown in figure 5, being the structure of pressure strip 4, it fits together with leaf cleaning close structure, there is certain softness Property, it is adapted to washer variable diameters and becomes the requirement of bending angle.
The present invention is in pipeline cleaning progradation, and a part of fluid flows from the slit of leaf cleaning structure and pipeline Cross, form the cavitation effect of leaf cleaning structure, another part fluid is flowed into from the epimere through hole of cavitating nozzle 3 shown in Fig. 4, Into in the cavitation resonator of stage casing through hole, due to the mutation of cross sectional shape, current produce initial pressure excitement, and then produce stream Body resonance, forms standing wave and forms initial cavitation bubble.The vacuole of traveling compresses in hypomere through hole through strength, with current lasing Go out.In cavitating nozzle 3 and blade throttle this two parts, all there is cavitation effect, produced when instantaneously being crumbled and fall due to vacuole larger Instant pressure and microjet, when crumble and fall occur near dirt when, produced pressure and microjet high-efficient cleaning can be utilized Wash pipe scale.Hypomere through hole shown in Fig. 4 can scatter the dirt cleared up in pipeline in washer direction of advance, and before the present invention Above-mentioned cavitation effect strike wall can be produced when entering, while the dirt on wall can be scraped.By leaf cleaning structure with sky Change nozzle co-operating, effectively cleared up for the dirt in pipeline.
The present invention is not limited to the present embodiment, any equivalent concepts in the technical scope of present disclosure or changes Become, be classified as protection scope of the present invention.

Claims (6)

1. the compound cavitation washer for eliminating sludge in pipe, it is characterised in that:Including leaf cleaning structure and nozzle (3), institute The leaf cleaning structure and nozzle (3) stated are connected as one by self-locking thread;
Described leaf cleaning structure includes (2) two groups of blades of internal layer blade (1) and outer blade, described internal layer blade (1) Together with outer blade (2) interfolded;Described leaf cleaning structure is shaped into two-fold bending angle by bending Bowl structure, and meet bending angle θ12
Described nozzle (3) is made up of entrance cavity, cavitation resonator and jet aperture;Entrance cavity diameter is interior with cavitation resonator Footpath is 1.8-2.1 than scope;Cavitation resonator diameter is 3.1-3.3 than scope with jet hole diameter;
Described leaf cleaning structure inner chamber is fitted with pressure strip (4);Described nozzle (3) is cavitating nozzle (3).
2. the compound cavitation washer according to claim 1 for eliminating sludge in pipe, it is characterised in that:Described jet The jet exit of aperture is taper hole, and taper hole cone angle scope is 120 ° -150 °.
3. the compound cavitation washer according to claim 1 for eliminating sludge in pipe, it is characterised in that:Described compression Plate (4) is fitted with leaf cleaning structure inner chamber, using highly elastic material.
4. the compound cavitation washer according to claim 1 for eliminating sludge in pipe, it is characterised in that:Described blade The neck that cleaning structure and nozzle (3) are also opened by nozzle (3) outside wall surface is attached.
5. the compound cavitation washer according to claim 1 for eliminating sludge in pipe, it is characterised in that:Described nozzle (3) central through hole has three different diameters, a diameter of D of epimere through hole, a diameter of D of stage casing through holeS, hypomere through hole A diameter of d, the diameter Relationship of its stage casing through hole and epimere through hole is:(D/DS)2For 3.2-4.5, epimere through hole and hypomere through hole Diameter Relationship is:(D/d)2For 10-11.
6. the compound cavitation washer according to claim 1 for eliminating sludge in pipe, it is characterised in that:Described nozzle And pressure strip (4) is fixed on blade by self-locking nut (7), nozzle (3) outer wall shoulder, Upper gasket (5) and lower gasket (6) (3) On cleaning structure, described Upper gasket (5) is located at pressure strip (4) intracavity bottom, lower gasket (6) and is located at leaf cleaning structure appearance Face bottom.
CN201710334512.5A 2017-05-12 2017-05-12 Compound cavitation washer for eliminating sludge in pipe Active CN106964611B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107442527A (en) * 2017-07-26 2017-12-08 哈尔滨学院 The compound cavitation washer for eliminating sludge in pipe with two-stage resonance functional
CN107649467A (en) * 2017-09-05 2018-02-02 哈尔滨学院 Pipeline cavitation cleaning performance detecting system
CN110907130A (en) * 2019-12-04 2020-03-24 大连海事大学 Cavitation impact effect detection system in closed pipeline
CN111058800A (en) * 2019-11-12 2020-04-24 大庆油田有限责任公司 Blade retractable underground cleaning scale remover

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193635A (en) * 1978-04-07 1980-03-18 Hochrein Ambrose A Jr Controlled cavitation erosion process and system
CN201279516Y (en) * 2008-10-17 2009-07-29 大庆石油管理局 Water-power cavitation jet pipe cleaner
CN201632456U (en) * 2010-05-07 2010-11-17 李兴文 Pipe cleaning and chromium eliminating device
CN107442527A (en) * 2017-07-26 2017-12-08 哈尔滨学院 The compound cavitation washer for eliminating sludge in pipe with two-stage resonance functional

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193635A (en) * 1978-04-07 1980-03-18 Hochrein Ambrose A Jr Controlled cavitation erosion process and system
CN201279516Y (en) * 2008-10-17 2009-07-29 大庆石油管理局 Water-power cavitation jet pipe cleaner
CN201632456U (en) * 2010-05-07 2010-11-17 李兴文 Pipe cleaning and chromium eliminating device
CN107442527A (en) * 2017-07-26 2017-12-08 哈尔滨学院 The compound cavitation washer for eliminating sludge in pipe with two-stage resonance functional

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107442527A (en) * 2017-07-26 2017-12-08 哈尔滨学院 The compound cavitation washer for eliminating sludge in pipe with two-stage resonance functional
CN107649467A (en) * 2017-09-05 2018-02-02 哈尔滨学院 Pipeline cavitation cleaning performance detecting system
CN107649467B (en) * 2017-09-05 2019-06-28 大连海事大学 Pipeline cavitation cleaning effect detection system
CN111058800A (en) * 2019-11-12 2020-04-24 大庆油田有限责任公司 Blade retractable underground cleaning scale remover
CN110907130A (en) * 2019-12-04 2020-03-24 大连海事大学 Cavitation impact effect detection system in closed pipeline

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