CN104343681B - A kind of axisymmetric curved surface rotary volume-variable pump - Google Patents
A kind of axisymmetric curved surface rotary volume-variable pump Download PDFInfo
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- CN104343681B CN104343681B CN201410560646.5A CN201410560646A CN104343681B CN 104343681 B CN104343681 B CN 104343681B CN 201410560646 A CN201410560646 A CN 201410560646A CN 104343681 B CN104343681 B CN 104343681B
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Abstract
A kind of axisymmetric curved surface rotary volume-variable pump, it is related to main shaft, the separator disc of the alignment of shafts, the blade at separator disc two ends in positive displacement pump making field, including the pump housing, the pump housing, one layer of plasticity nonmetallic materials of cylinder-packing on layer of metal hard alloy, separator disc two ends working face are inlaid with blade curved surface.Effectively prevent blade from, with separating dish gap increase, preventing blade from cavitating and abrasion of particles, scratch blade and separator disc working face.
Description
Technical field
Invention is the improvement to axisymmetric curved surface rotary volume-variable pump, more particularly to one kind can prevent blade and separator disc phase
To surface washed away, worn and torn by high-pressure fluid, blade service life is long, and the efficiency of pump is high, can gas and water, the axle of oily three-phase mixed transferring
Symmetroid rotary volume-variable pump.
Background technology
Axisymmetric curved surface rotary volume-variable pump is a kind of new type rotating displacement pump, and its operating efficiency is very high, and pumping efficiency is high
Up to 70~80%, 30~40% or so are higher by than Ordinary Centrifugal Pumps efficiency, is especially used in low discharge, high pressure operating mode, is imitated
Rate can be higher by 40% or so than centrifugal pump.Such as 20~30m of flow3/ h, lift 0.8MPa centrifugal pump, general efficiency only has 35
~40%, and convey the axisymmetric curved surface rotary volume-variable pump of same flow and lift, its efficiency high is up to 75% or so.In addition, this
Pump also because being that volume gradual change compression realizes that liquid linear velocity is relatively low in pumping, pump, weares and teares smaller to pump erosion, thus in conveying
High viscosity liquid, slurry containing solid-phase material have original advantage.Example is conveyed as used in the various lots of petroleum crude oil of China, compared with
Existing Crude Oil Transportation multistage centrifugal pump power can save more than 35%, be a kind of comparatively ideal Crude Oil Transportation pump.And this pump
Can be positive/negative to rotary work.
Chinese patent 200620116360.9 discloses a kind of curved surface rotary volume-variable pump, basic structure such as Fig. 1, including inner chamber
Fixation separator disc 5 in the middle part of cylindrical circular pump case 3 and the assembled pump cover 2 of two supports rotating shaft, pump chamber axial direction separates pump
For the chamber of left and right two, the rotating shaft 1 through separator disc is overlapped with pump chamber axis, separator disc both sides are rotatably assorted with pump chamber side face, curved surface
There is axial slide in the middle of the relative and 180 degree that is staggered, the axisymmetric curved surface rotating disk 4 being fixed in rotating shaft, separator disc, interpolation can be axial
The baffle plate assembly 6 reciprocatingly slided.Operation principle：The axisymmetric curved surface rotating disk for 180 degree that the N-Side surf of separator disc two is opposite, curved surface misplaces
Synchronous rotary, volume reducing (discharge) and volume increase (suction) is produced in slide damper both sides, left and right has 2 discharges respectively
Working chamber, 2 suction working chambers are externally discharged and suction fluid by drain groove on separator disc, so as to realize the row of pump, suction
Continuous conveying.Slide damper is moved back and forth in separator disc axial slide, by the curved surface rotating disk of the opposed 180 degree that is staggered of synchronous rotary
Curved surface is promoted.But this structure is the imagination for proposing a kind of axisymmetric curved surface rotary volume-variable pump, due to lacking engineering operation
Consider so that the positive displacement pump designed and produced by this, actual application value is lacked in engineering, especially with short life, generally
Effectively work is no more than 20 days, thus causes the actual invention of the positive displacement pump for many years, is merely resting on theory stage, does not have reach so far
Put goods on the market to the pump for meeting Practical Project operation needs, so on the not no pump physical presence in market, pump engineering manual also not
There is report, Crude Oil in China delivery pump still uses less efficient centrifugal multistage pump multiple centrifugal pump so far.
Although being repeatedly continuously improved by the present inventor, the technical scheme further improved is also disclosed that（Patent：
201220650411.1、201220650394.1、201220650414.5、201220650412.6）, but still there is deficiency.
For example：The pump is for conveying about 50% gas, about 50% liquid（Wherein 8 ~ 10% it is crude oil, 40% is water）And 1% solid silt particle
During mixed material, when pump discharge pressure be more than 0.8MPa in the case of, the gases at high pressure in pump liquid outlet cavity volume, be mingled with dampening and
Silt particle, from the convex portion of blade curved surface and the matching part of separator disc, backflows to the suction inlet position of pump chamber, due to pressing from both sides the gas of silt particle
Body, during high speed is backflowed, it is easy to the surface of erosive wear blade and separator disc, and then increases gap between the two
Greatly, decline the volumetric efficiency of pump.When the conveying of oil extraction in oil field team contains gas and water, crude oil, after two months, i.e., the positive displacement pump uses
There is the phenomenon of high-pressure working chamber and operating on low voltage chamber gas blowby, have impact on the using effect of pump.Therefore, axisymmetric curved surface rotation becomes
Holding pump will be applied successfully on national oilfield exploitation, also need to improve.
The content of the invention
Effectively prevent blade from, with separating dish gap increase, preventing in view of the deficiencies of the prior art, the present invention provides a kind of
Blade cavitation erosion and the axisymmetric curved surface rotary volume-variable pump of abrasion of particles, scratch blade and separator disc working face.
To realize the object of the invention, there is provided following technical scheme：A kind of axisymmetric curved surface rotary volume-variable pump, including pump
Separator disc, the blade at separator disc two ends of main shaft, the alignment of shafts in body, the pump housing, it is characterised in that be inlaid with blade curved surface
One layer of plasticity nonmetallic materials of cylinder-packing on layer of metal hard alloy, separator disc two ends working face.First on blade curved surface
Laminating layer of metal hard alloy, the anti-wear performance of increase blade and liquid contact site；Again in the both sides of separator disc, with blade
In mating surface, one layer of anti-wear performance of cladding is good, but has the nonmetallic materials of certain plasticity again.Blade curved surface is inlayed in the present invention
Serve as a contrast layer of metal hard alloy, it is therefore intended that lifting blade curved surface is to the abrasion resistance with silt particle fluid, and the two ends of separator disc
Working face coats one layer of plastic nonmetallic materials, its object is to：One is the anti-wear performance for lifting separator disc working face；
Two are overcome when there is thin hard solid particle to enter blade curved surface and separate the slot between panel surface, can be absorbed on separator disc
Plasticity nonmetallic materials in, it is to avoid or reduce the abrasion or rigidity of thin grit in embedded slot to the blade of motion and scrape
Wound.Blade is different with two kinds of soft or hard properties on separator disc, and the different material fit of function can effectively lift blade and separator disc
Wearability and service life.
Its key problem in technology is, by the plasticity nonmetallic materials on blade and separator disc, to realize soft or hard mediation, in tool
Have during thin grit by plasticity nonmetallic materials elasticity and deformability by thin grit wrap up into, prevent in blade
Blade curved surface is caused to denude or rigidity scratch with being rubbed back and forth in the gap of separator disc.
Preferably, metal carbide is tungsten-cobalt or nickel cobalt (alloy).
Preferably, plasticity nonmetallic materials are ultra-high molecular weight polyethylene or polyurethane or modified Teflon.
Preferably, metal carbide layer is consistent with blade curvature of curved surface, fixation is welded with metal carbide layer
Bolt or nut, by setting corresponding screw on blade, both are fastenedly connected bolt.
Preferably, metal carbide layer is consistent with blade curvature of curved surface, metal carbide layer is welded with blade curved surface
Connect fixation.
Preferably, heap is welded with metal carbide layer on blade curved surface, polishing processing makes both curvature consistent.
Preferably, being provided with hole or the groove of the anchoring plasticity non-metallic material bed of material on the working face of separator disc two ends.
Preferably, separator disc two ends working face and the non-metallic material bed of material, both hot die-casting moldings consolidation.
Beneficial effects of the present invention：Axisymmetric curved surface rotary volume-variable pump can be made, gas, oil, water, solid four can be conveyed and mutually mixed
The complex dielectrics of conjunction.And in the case where outlet pressure is more than 1MPa, blade and separator disc can be used for a long time, it is ensured that pump
Volumetric efficiency, improve the service life under displacement pump complex working condition, compared than original technology, the service life of pump is from 2
The moon is brought up to 12 months.
Brief description of the drawings
Fig. 1 is the structure chart of prior art.
Fig. 2 is structure chart of the invention.
Fig. 3 is the structure chart of blade working face carbide inserts.
Fig. 4 is the another form of structure chart of blade working face carbide inserts.
Fig. 5 is the plastic structure chart of separator disc both sides working face.
Fig. 6 is the structural representation of embodiment 3.
Fig. 7 is another structural representation of embodiment 3.
Embodiment
Embodiment 1：Main shaft 1, the center of main shaft 1 in a kind of axisymmetric curved surface rotary volume-variable pump, including the pump housing 3, the pump housing 3
Layer of metal hard alloy 4.2, the two ends work of separator disc 5 are inlaid with separator disc 5, the blade 4 at the two ends of separator disc 5, the curved surface of blade 4
Make one layer of plasticity nonmetallic materials 5.2 of cylinder-packing on face.Metal carbide 4.2, metallic hard consistent with the curvature of curved surface of blade 4 of layer
Fixing bolt or nut 4.2.1 are welded with matter alloy-layer 4.2, by setting corresponding screw 4.1.1 on blade 4, both
Bolt 4.3 is fastenedly connected.Specially in the side of blade 4, the curved surface of curvature required for first processing blade matrix 4.1, and beat
Good screw 4.1.1 is standby；On the other hand metal carbide layer 4.2 is made, system is opened first to be used to be cold-pressed cemented carbide powder
Metal die, the hard alloy metal powder configured, is pressed into base substrate, then base substrate is put into sintering in stove by mould
Shaping, the flow-route and temperature of forming and sintering, the process implementing of hard alloy shaping and sintering by, sinter molding metallic hard
Matter alloy-layer 4.2, it is desirable to which curvature is consistent with the curvature of blade.Then in the side of metal carbide layer 4.2, with the weldering of brazing
The method of connecing is burn-on clamp nut 4.2.1.Again by metal carbide 4.2 insert of layer on blade matrix 4.1, therebetween
Glue, then fastening bolt 4.3 are coated in slot.Then again by 4.2 surface of metal carbide layer of polishing, and in grinding
After cylindrical, that is, the blade 4 for obtaining high-wear resistance is standby.The thickness of hard alloy 4.2 of the lining on the curved surface of blade 4 with compared with
For economy, it is degree that intensity requirement is met again, and preferably selection is within more than thickness 3mm, 12mm.Blade matrix 4.1 and hard
The viscose glue filled in the clearance gap of alloy 4.2, can select heatproof and high intensity, the solidity adhesive of high adhesion, because of adhesive
Kind is extremely more, is not construed as limiting.
Embodiment 2：With reference to embodiment 1, metal carbide 4.2, metal carbide consistent with the curvature of curved surface of blade 4 of layer
Layer 4.2 is welded and fixed with the curved surface of blade 4.
Embodiment 3：With reference to embodiment 1, as shown in fig. 7, heap is welded with metal carbide layer 4.2, polishing on the curved surface of blade 4
Processing makes both curvature consistent.As shown in fig. 6, being specially on the working curved surface of two axial symmetry blades 4, with commercially available tungsten-cobalt
After one layer of hard alloy 4.4 of carbide electrode built-up welding, then the technique of grinding is carried out, grinds satisfactory working face,
The processing and installation of other pump group parts are identical with embodiment one, also can obtain that blade anti-wear performance is good, can convey water, gas, oil, solid
Four axisymmetric curved surface rotary volume-variable pumps mix, crude oil.In order that cost of manufacture and service efficiency reach preferable system
One, the thickness of hard alloy 4.4 of built-up welding can be controlled between 2 ~ 8mm on blade.
Embodiment 4：With reference to embodiment 1 or 2 or 3, anchoring plasticity non-metallic material is provided with the two ends working face of separator disc 5
The hole of the bed of material 5.2 or groove 5.1.1.The two ends working face of separator disc 5 and the non-metallic material bed of material 5.2, both hot die-casting moldings consolidation.Tool
Body step is, first processes separator disc metallic matrix 5.1, and beats on matrix some hole 5.1.1 for anchoring plastics, aperture 8 ~
Between 16mm, then separator disc matrix 5.1 is fitted into the metal molding die for the system of having opened, both sides are uniformly added into 500 very much
The ultra-high molecular weight polyethylene of son amount, is put into electric furnace after compacting and heats, then compression molding, after machining, that is, obtains two
The separator disc of side cylinder-packing ultra high molecular polyethylene is standby.
Hard alloy in the present invention, can select tungsten-cobalt or nickel cobalt (alloy) and the hard alloy of other materials.
Metal carbide layer 4.2 on blade curved surface is formed using the one-time formed method sintering of powder metallurgy, is made
The specific method of work is that the metal dust mixed by one to one proportioning is fitted into the shaper of steel, compressing,
Then parison is deviate from mould, then parison be put into the mould specified, be put into pot arch, heated, constant temperature, cooling, cooling
Fire and form etc. process, then the technique such as add to be made by welding sander.
Heretofore described hard alloy blade inlays body, also can be hard alloy by blade integral manufacturing, technique with it is above-mentioned
Powder metallurgical technique is identical, also has preferable using effect using this scheme, and simply blade cost of manufacture adds 5 ~ 8 times.
In the present invention on separator disc cylinder-packing plasticity nonmetallic materials, the superelevation point of 500 ~ 10,000,000 molecular weight may be selected
Sub- weight northylen powder, can also be to ore deposits such as ultra-high molecular weight polyethylene whisker, flake crystalline palpus, carbon fibers as molding raw material
Thing material is filled modification, to strengthen the wearability of plasticity nonmetallic materials, and plasticity nonmetallic materials, which also can select, to be changed
The materials such as property polytetrafluoroethylene (PTFE), modified function wear-resistant plastic or rubber, within the scope of the present invention.
The thickness of plasticity nonmetallic materials should be according to the size of pump type, separator disc diameter on separator disc in the present embodiment
Size depending on, preferable thickness range is set between 6 ~ 12mm.Plasticity nonmetallic materials are thin, plasticity reduction, meeting
Influence the anti-wear performance of blade；Plasticity nonmetallic materials are thick, can influence the installation of pump machine because of the increase deflection that expands with heat and contract with cold
Precision.
Claims (5)
1. main shaft, the separator disc of the alignment of shafts, separator disc in a kind of axisymmetric curved surface rotary volume-variable pump, including the pump housing, the pump housing
The blade at two ends, it is characterised in that cylinder-packing on layer of metal hard alloy, separator disc two ends working face is inlaid with blade curved surface
One layer of plasticity nonmetallic materials, metal carbide layer makes：The metal pattern that system is used to be cold-pressed cemented carbide powder is driven first
Tool, the hard alloy metal powder configured, base substrate is pressed into by mould, then base substrate is put into sinter molding in stove,
The flow-route and temperature of forming and sintering, the process implementing of hard alloy shaping and sintering by, sinter molding metal hard is closed
Layer gold, it is desirable to which curvature is consistent with the curvature of blade, then in the side of metal carbide layer, is burn-on with the welding method of brazing
Clamp nut, then by metal carbide layer insert to blade matrix, glue is coated in slot therebetween, then fasten
Bolt, glue thickness 3mm ~ 12mm, plasticity nonmetallic materials make：Separator disc metallic matrix is first processed, and in separator disc
The hole of some anchoring plastics is beaten on metallic matrix, aperture loads between 8 ~ 16mm, then separator disc metallic matrix
In the metal molding die for opening system, both sides are put into electricity after being uniformly added into the ultra-high molecular weight polyethylene of 5,000,000 molecular weight, compacting
Heated in stove, then compression molding, the thickness range of plasticity nonmetallic materials is set between 6 ~ 12mm.
2. a kind of axisymmetric curved surface rotary volume-variable pump according to claim 1, it is characterised in that metal carbide is
Tungsten-cobalt or nickel cobalt (alloy).
3. a kind of axisymmetric curved surface rotary volume-variable pump according to claim 1, it is characterised in that metal carbide layer
It is consistent with blade curvature of curved surface, fixing bolt or nut are welded with metal carbide layer, by setting correspondence on blade
Screw, both are fastenedly connected bolt.
4. a kind of axisymmetric curved surface rotary volume-variable pump according to claim 1, it is characterised in that separator disc two ends work
Hole or the groove of the anchoring plasticity non-metallic material bed of material are provided with face.
5. a kind of axisymmetric curved surface rotary volume-variable pump according to claim 1, it is characterised in that separator disc two ends work
Face and the plasticity non-metallic material bed of material, both hot die-casting moldings consolidation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560646.5A CN104343681B (en) | 2014-10-21 | 2014-10-21 | A kind of axisymmetric curved surface rotary volume-variable pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410560646.5A CN104343681B (en) | 2014-10-21 | 2014-10-21 | A kind of axisymmetric curved surface rotary volume-variable pump |
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| CN104343681B true CN104343681B (en) | 2017-11-03 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200968284Y (en) * | 2006-05-26 | 2007-10-31 | 陈宝琛 | Rotary piston pump |
| CN101298868A (en) * | 2007-11-08 | 2008-11-05 | 中国人民解放军空军油料研究所 | Rotor pump with rotary slices |
| CN201615056U (en) * | 2009-09-22 | 2010-10-27 | 中国人民解放军空军油料研究所 | Rotor pump with high self-priming performance |
| CN201827072U (en) * | 2010-07-27 | 2011-05-11 | 丹东一正流体技术有限责任公司 | Energy-saving type displacement pump |
| CN202117939U (en) * | 2011-06-27 | 2012-01-18 | 王喜冬 | Hard-alloy amphibious sand pump capable of idling and being connected in series mode |
| CN102979722A (en) * | 2012-12-03 | 2013-03-20 | 宜兴市宙斯泵业有限公司 | Axisymmetric curved surface rotary variable displacement pump |
| CN204175592U (en) * | 2014-10-21 | 2015-02-25 | 宜兴市宙斯泵业有限公司 | A kind of axisymmetric curved surface rotary volume-variable pump |
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