CN108019359A - Jet centrifugal pump with separate mesh enhancing self-priming - Google Patents
Jet centrifugal pump with separate mesh enhancing self-priming Download PDFInfo
- Publication number
- CN108019359A CN108019359A CN201711477421.3A CN201711477421A CN108019359A CN 108019359 A CN108019359 A CN 108019359A CN 201711477421 A CN201711477421 A CN 201711477421A CN 108019359 A CN108019359 A CN 108019359A
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- China
- Prior art keywords
- gas
- separate mesh
- centrifugal pump
- liquid separation
- priming
- Prior art date
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- 230000002708 enhancing effect Effects 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 238000000926 separation method Methods 0.000 claims abstract description 56
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 238000010992 reflux Methods 0.000 claims abstract description 29
- 238000005119 centrifugation Methods 0.000 claims abstract description 18
- 239000011800 void material Substances 0.000 claims abstract description 7
- 230000037452 priming Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000005086 pumping Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000005514 two-phase flow Effects 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of jet centrifugal pump with separate mesh enhancing self-priming.The present invention includes a jet centrifugal pump and separate mesh, separate mesh is arranged in gas-liquid separation chamber, between reflux flow channel entry point and the outlet of centrifugation volute casing, effective gas-liquid separation is carried out to the biphase gas and liquid flow that reflux flow channel entry point is back in gas-liquid separation room with certain space posture and captured area, rectification is carried out to the fluid with very strong kinetic energy that centrifugation outlet originally is ejected in gas-liquid separation room using separate mesh at the same time, slow down and be pressurized, improve the pressure potential of reflux fluid and the overall uniformity of separation indoor moveable, significantly reduce the void fraction for the reflux fluid that injector nozzle is flowed back to through the runner that flows back, gas-liquid mixed and the separated speed of gas-liquid are accelerated at the same time, then the suction capacity of jet type self priming centrifugal pump is obviously improved.
Description
Technical field
The present invention relates to a kind of jet centrifugal pump, more particularly to a kind of injecting type centrifugation with separate mesh enhancing self-priming
Pump, belongs to field of fluid machinery.
Background technology
Pump be it is a kind of have a large capacity and a wide range, the universal machine that energy expenditure is huge, it is every have liquid flow place nearly all have
Pump is working.Counted according to Chinese universal machine association, in recent years more than 100,000,000,000 yuan of the average annual gross output value of whole nation pump industry, water pump consumption
Electricity accounts for the 20% of national power consumption.At present, the disclosed low noise self-priming in miscellaneous small-sized land pump product
Combination pump（Application number：201610813048.3；106224249 A of application publication number CN）Be a kind of new, low noise, efficiently,
Energy saving pump class product, i.e., new jet centrifugal pump.This pump suction capacity is strong, with existing small-sized land pump leading market
Peripheral pump to compare suction height, low noise, flow with jet pump big, efficient, in heating, tap water boosting, the mining machine of supplying water
Many industrial circles such as tool, shipbuilding, petrochemical industry have broad application prospects, its market potential is huge, energy-saving and noise-reducing
Significant effect.
Nevertheless, published low noise self-priming combination pump is in the gas liquid two-phase flow exported from pumping phases due to centrifugation
Similar to the random wave ambient with inclination angle, the mainstream region of jet stream and mostly potential barrier area faces return flow line entrance is centrifuged out
Distance of the mouth with return flow line entrance between the two was not generally possible to for considering for pump housing volume, efficiency and cost
Greatly, then thrown away by impeller into the bubble in gas-liquid separation room and often follow mainstream to be difficult to escape, separate and be forced to back flow back into
Reflux inlet and be entrained into impeller again, be subject to centrifugal impeller to be cut into the bubble of scale smaller again.With the depth of self-priming process
Enter, the pressure of pump intake is more and more lower, and net positive suction head is less and less, cannot be divided in time plus the bubble in gas-liquid separation room
From, discharge water body, cause reflux working fluid carry substantial amounts of bubble, be further exacerbated by pump in cavitation generation, make pump
The gas of entrance cannot swimmingly be inhaled into injector and be mixed with reflux fluid, under the influence of the unfavorable mechanism of these two aspects most
The reduction of self-priming speed and suction lift is caused eventually, and " air sinuses " phenomenon even occurs when serious, loses self-suction function completely.
The content of the invention
The present invention is for low noise self-priming combination pump suction capacity is unstable, the deficiency of self-priming rate uniformity difference, proposition
It is a kind of to strengthen self-priming speed and suction lift, the jet centrifugal pump for lifting self-priming stability with separate mesh.
It is an object of the invention to the separate mesh by selecting appropriate geometric shape and scale, reasonable layout separate mesh is in gas
Liquid separates indoor relative space position, and global optimization, control are carried out to the flow uniformity in gas-liquid separation room, flow direction
With the separation of speed up gas and liquid two-phase, so as to lift the suction capacity of such jet centrifugal pump.
To achieve these goals, the technical solution adopted by the present invention is：
The present invention includes a jet centrifugal pump and separate mesh, separate mesh are arranged in gas-liquid separation chamber, enters between reflux runner
Between mouth and the outlet of centrifugation volute casing, with certain space posture and captured area S to being back to reflux in gas-liquid separation room
The biphase gas and liquid flow of flow channel entry point carries out effective gas-liquid separation, while using separate mesh to being centrifuged out originally in gas-liquid separation room
The fluid with very strong kinetic energy that mouth ejects carries out rectification, supercharging of slowing down, and improves pressure potential and the separation chamber of reflux fluid
The overall uniformity of interior flowing, significantly reduces the void fraction for the reflux fluid that injector nozzle is flowed back to through the runner that flows back, allows reflux
Gas-liquid separation this jet centrifugal pump in gas-liquid mixed-gas-liquid separation room in Fluid pressure potential energy higher, diffuser from
Two the most key flow process are more smooth in the circulating of pumping phases, and gas-liquid mixed and the separated speed of gas-liquid are at the same time
Accelerate, then the suction capacity of jet type self priming centrifugal pump is obviously improved.
The gas-liquid separation chamber that the separate mesh captured area S is 20%~100% is vertical on position along being flowed to where separate mesh
Directly in the cross-sectional area of flow direction.
The boundary shape of the separate mesh can be cross-sectional boundaries of the gas-liquid separation chamber along separate mesh position, also may be used
With the overlapping margins, and not leave certain gap, or rectangle, circle, elliptical cylinder face and other shapes for rule
Shape.
The grid of the separate mesh can be rectangle, square, triangle, etc. polygon, circle and other arbitrary shapes,
Or the combination of various shapes grid.
The separate mesh can also be Arbitrary 3 D space curved surface.
Compared with prior art, by using above technical scheme, have an advantageous effect in that：
According to be centrifuged out in gas-liquid separation room mouth and flow back flow channel entry point relative tertiary location different and separation chamber in bulk flow
The flow behavior of field, being set between centrifugation outlet and reflux flow channel entry point has barrier bubble, the separation of modulation fluid flowing
Net, on the one hand ensures that the gas-liquid separation in gas-liquid separation room is more controllable, makes the cycle operation fluid void fraction for being back to nozzle
Substantially reduce, and the momentum carried maintains higher level, can be that jet expansion continuously create well by being formed for powerful negative pressure
Boundary condition, therefore self-priming stage inlet section gas can be continued injection by the negative pressure and enter diffuser, and keep suitable flow；
On the other hand, separate mesh can strengthen the gas-liquid separation in gas-liquid separation room, reduce bubble reflux, modulation fluid flowing, will centrifuge
The fluid dynamic energy of outlet is converted into pressure potential, reduces interference of the disorderly flowing to bubble floating in separation chamber, abatement bubble with
The dive of downward fluid, greatly promotes the exhaust efficiency and exhaust velocity in gas-liquid separation chamber's confined space.In addition, separate mesh can
To reduce influence of the centrifugation export direction to reflux fluid flow and jet centrifugal pump internal circulation flow, injecting type centrifugation is improved
The stability of self-circulating booster and suction capacity is pumped, reduces the defect rate of product.
Separate mesh is simple to manufacture, and various engineering material or metal can be used to be made, cost is low, process for machining and manufacturing
Difficulty is low, and Technique Popularizing is wide with industrialization prospect.While jet centrifugal pump suction lift and speed is improved, Ke Yibao
The whole pump characteristics such as the stability of card pump performance, flow-lift, flow-efficiency on pump influence very small.
Brief description of the drawings
Fig. 1 is the vertically arranged longitudinal profile schematic diagram of jet centrifugal pump injector of the present invention；
Fig. 2 is the separate mesh local detail schematic diagram of Fig. 1；
Fig. 3 is the horizontally disposed longitudinal profile schematic diagram of jet centrifugal pump injector of the present invention；
Reference numeral：1st, separate mesh；2nd, jet centrifugal pump entrance；3rd, the jet centrifugal pump pump housing；4th, jet centrifugal pump goes out
Mouthful；5th, flow back flow channel entry point；6th, flow back runner；7th, nozzle；8th, diffuser；9th, gas-liquid separation chamber；10th, Centrifugal Impeller Inlet；11、
Centrifugal impeller；12nd, volute casing is centrifuged；13rd, runner exit is centrifuged；14th, cut water；15th, motor；16th, volute casing diversion section is centrifuged.
Embodiment
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with the present invention
Attached drawing, clear, complete description is carried out to the technical solution in invention, it is clear that described is only that a present invention part is real
Example is applied, instead of all the embodiments.Embodiment based on invention, those of ordinary skill in the art are not making creative labor
All other embodiments obtained under the premise of dynamic, should all belong to the scope of invention protection.
As shown in Figure 1 to Figure 3, the present invention includes a jet centrifugal pump pump housing 3（Jet centrifugal pump with rear side enters
Mouth 2 and jet centrifugal pump outlet 4）, centrifugal impeller 11, the injector and separate mesh 1 being made of nozzle 7 and diffuser 8.According to
Centrifugation runner exit 13 and bulk flow in the different and separation chamber 9 for 5 relative tertiary location of flow channel entry point that flows back in gas-liquid separation chamber 9
The flow behavior of field, being set between centrifugation outlet and reflux flow channel entry point has barrier bubble, the separation of modulation fluid flowing
Net 1.On the one hand ensure that the gas-liquid separation in gas-liquid separation room is more controllable, makes the cycle operation fluid void fraction for being back to nozzle
The momentum substantially reduce, carried maintains higher level, before the formation creation well that continuous powerful negative pressure can be exported for nozzle 7
Condition is put forward, therefore self-priming stage inlet section gas can be continued injection by the negative pressure and enter diffuser 8, and keep suitable flow.
On the other hand, separate mesh 1 can strengthen the gas-liquid separation in gas-liquid separation room, reduce bubble reflux, modulate the stream inside separation chamber 9
Body flows, and the fluid dynamic energy for centrifuging runner exit 13 is converted into pressure potential, reduces disorderly in separation chamber flow on bubble
Floating interference, abatement bubble greatly promote the exhaust efficiency in 9 confined space of gas-liquid separation chamber and row with the dive of downward fluid
Gas velocity degree.
From pumping phases under the driving of impeller, the indoor fluid of centrifugation snail obtains considerable degree of pressure potential and kinetic energy,
The jet stream with very strong kinetic energy is formed about in centrifugation runner exit.At the same time, centrifugal pump is stronger by 7 near exit of nozzle
Gas in negative-pressure ward pump intake 2, mixes into diffuser 8 with reflux fluid, flows by Centrifugal Impeller Inlet 10 and finally
Enter to centrifuge the centrifugal impeller 11 in volute casing 12, centrifugal impeller 11 is driven by motor 15, and centrifuging in volute casing 12 has cut water 14.So
From pumping phases, prolong the jet stream that the centrifugation runner exit 13 born is formed by centrifugation volute casing diversion section and include the gas that pump intake 2 is inhaled
Body and it is mixed into the bubble that reflux fluid returns injector.The excessive overall gas-liquid of pump that will influence of obvious reflux fluid void fraction is mixed
Conjunction and gas-liquid separation, ultimately result in the reduction of suction lift and speed.Separate mesh 1 is arranged in inside gas-liquid separation chamber 9, between return
Flow between flow channel entry point 5 and centrifugation runner exit 13, with certain space posture and captured area S to gas-liquid separation chamber 9
The biphase gas and liquid flow for being inside back to reflux flow channel entry point 5 carries out effective gas-liquid separation.Using separate mesh in gas-liquid separation chamber 9
Originally the fluid that centrifugation runner exit 13 ejects carries out rectification, supercharging of slowing down, and improves the pressure potential of fluid in reflux runner 6
With separation chamber 9 in flowing overall uniformity, reduce through flow back runner 6 flow back to injector nozzle 7 reflux fluid void fraction,
Allow reflux fluid pressure potential higher, gas-liquid separation this injecting type in gas-liquid mixed-gas-liquid separation chamber 9 in diffuser 8
Centrifugal pump two flow process the most key from the circulating of pumping phases are more smooth, and gas-liquid mixed and gas-liquid are separated
Speed is accelerated at the same time, so that the suction capacity of jet type self priming centrifugal pump is obviously improved.
To sum up, the present invention is based on published low-noise combination pump, it is proposed that one kind utilizes separate mesh fully optimized
Two-phase flow in gas-liquid separation room, is capable of the method and separator of science control gas-liquid separation, increases in unobvious and manufacture
On the basis of cost and technology difficulty, the self-priming speed and suction lift of this jet centrifugal pump are effectively lifted.
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent structure change that technical spirit makees above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (6)
1. the jet centrifugal pump with separate mesh enhancing self-priming, including jet centrifugal pump body and separate mesh, its spy are：
The separate mesh is arranged in gas-liquid separation chamber, between reflux flow channel entry point and the outlet of centrifugation volute casing, with certain opposite
Spatial attitude and captured area carry out effective gas-liquid to the biphase gas and liquid flow that reflux flow channel entry point is back in gas-liquid separation room
Separation, at the same it is whole using the progress of the fluid with very strong kinetic energy that separate mesh ejects centrifugation outlet originally in gas-liquid separation room
Stream, supercharging of slowing down, improves the pressure potential of reflux fluid and the overall uniformity of separation indoor moveable, significantly reduces and flowed through reflux
Road flows back to the void fraction of the reflux fluid of injector nozzle.
2. the jet centrifugal pump according to claim 1 with separate mesh enhancing self-priming, it is characterised in that：The separation
The gas-liquid separation chamber that net captured area is 20%~100% is flowed on position perpendicular to the cross section of flow direction along separate mesh place
Area.
3. the jet centrifugal pump according to claim 1 with separate mesh enhancing self-priming, it is characterised in that：Point
Off-grid boundary shape is cross-sectional boundaries shape of the gas-liquid separation chamber along plane where separate mesh, or not heavy with the border
Close, and leave gap.
4. the jet centrifugal pump according to claim 1 with separate mesh enhancing self-priming, it is characterised in that：Point
Off-network is regular rectangle, circle, ellipse or cylindrical surface.
5. the jet centrifugal pump according to claim 1 with separate mesh enhancing self-priming, it is characterised in that：Point
Off-grid grid for rectangle, triangle, etc. polygon, circle or various shapes grid combination.
6. the jet centrifugal pump according to claim 1 with separate mesh enhancing self-priming, it is characterised in that：Point
Off-network is Arbitrary 3 D space curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711477421.3A CN108019359B (en) | 2017-12-29 | 2017-12-29 | Jet centrifugal pump with separation net enhanced self-priming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711477421.3A CN108019359B (en) | 2017-12-29 | 2017-12-29 | Jet centrifugal pump with separation net enhanced self-priming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108019359A true CN108019359A (en) | 2018-05-11 |
| CN108019359B CN108019359B (en) | 2024-03-22 |
Family
ID=62072432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711477421.3A Active CN108019359B (en) | 2017-12-29 | 2017-12-29 | Jet centrifugal pump with separation net enhanced self-priming |
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| Country | Link |
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| CN (1) | CN108019359B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661919A (en) * | 2018-06-26 | 2018-10-16 | 中国计量大学 | Jet pump with gas-liquid separation device |
| CN108726695A (en) * | 2018-07-06 | 2018-11-02 | 国合凯希水体修复江苏有限公司 | Microbubble dissolves disperser |
| CN110821840A (en) * | 2019-10-25 | 2020-02-21 | 中国计量大学 | Self-suction enhanced compound pump of intelligent super-hydrophobic bubble trap |
| WO2023279689A1 (en) * | 2021-07-05 | 2023-01-12 | 陈荣国 | Direct current permanent magnet self-priming composite shielding pump |
| WO2023029378A1 (en) * | 2021-08-30 | 2023-03-09 | 陈荣国 | Self-suction type multi-stage composite canned motor pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000345987A (en) * | 1999-06-07 | 2000-12-12 | Matsushita Electric Ind Co Ltd | Self-priming pump |
| CN106224249A (en) * | 2016-09-09 | 2016-12-14 | 浙江新控泵业有限公司 | Low noise self-priming combination pump |
| CN207715378U (en) * | 2017-12-29 | 2018-08-10 | 台州天计流体科技有限公司 | A kind of jet centrifugal pump with separate mesh enhancing self-priming |
-
2017
- 2017-12-29 CN CN201711477421.3A patent/CN108019359B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000345987A (en) * | 1999-06-07 | 2000-12-12 | Matsushita Electric Ind Co Ltd | Self-priming pump |
| CN106224249A (en) * | 2016-09-09 | 2016-12-14 | 浙江新控泵业有限公司 | Low noise self-priming combination pump |
| CN207715378U (en) * | 2017-12-29 | 2018-08-10 | 台州天计流体科技有限公司 | A kind of jet centrifugal pump with separate mesh enhancing self-priming |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661919A (en) * | 2018-06-26 | 2018-10-16 | 中国计量大学 | Jet pump with gas-liquid separation device |
| CN108726695A (en) * | 2018-07-06 | 2018-11-02 | 国合凯希水体修复江苏有限公司 | Microbubble dissolves disperser |
| CN110821840A (en) * | 2019-10-25 | 2020-02-21 | 中国计量大学 | Self-suction enhanced compound pump of intelligent super-hydrophobic bubble trap |
| WO2023279689A1 (en) * | 2021-07-05 | 2023-01-12 | 陈荣国 | Direct current permanent magnet self-priming composite shielding pump |
| WO2023029378A1 (en) * | 2021-08-30 | 2023-03-09 | 陈荣国 | Self-suction type multi-stage composite canned motor pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108019359B (en) | 2024-03-22 |
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