CN106640769A - Conical water inflow device for improving instability hydraulic characteristic of axial flow pump - Google Patents
Conical water inflow device for improving instability hydraulic characteristic of axial flow pump Download PDFInfo
- Publication number
- CN106640769A CN106640769A CN201611090536.2A CN201611090536A CN106640769A CN 106640769 A CN106640769 A CN 106640769A CN 201611090536 A CN201611090536 A CN 201611090536A CN 106640769 A CN106640769 A CN 106640769A
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- China
- Prior art keywords
- inner sleeve
- flow pump
- trocar sheath
- axial
- improving
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- Legal status (The legal status 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 status listed.)
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Classifications
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/528—Casings; Connections of working fluid for axial pumps especially adapted for liquid pumps
Abstract
The invention discloses a conical water inflow device for improving the instability hydraulic characteristic of an axial flow pump. The two ends of an outer sleeve serve as an inlet end and an outlet end respectively, an outlet flange is arranged on the outer wall of the outlet end, the outlet end of the outer sleeve is connected with the inlet end of an impeller chamber of the axial flow pump through the outlet flange, an inlet flange is arranged on the outer wall of the inlet end of the outer sleeve, and the inlet end of the outer sleeve can be connected with a water inflow pipeline through the inlet flange. An inner sleeve is arranged in the outer sleeve, a gap is formed between the inner sleeve and the outer sleeve, a rib plate is arranged in the gap, the inner sleeve and the outer sleeve are fixedly connected through the rib plate, and a vortex suppression plate is arranged on the inner wall of the inner sleeve. The inflow condition in front of an impeller under the small-flow working condition is fully improved, a hydraulic instable saddle region of the axial flow pump is completely eliminated, and the safe and stable operating working condition range of the axial flow pump is effectively widened. The conical water inflow device is simple in structure, easy to machine and manufacture and suitable for axial flow pumps of any types.
Description
Technical field
The invention belongs to pump technology field, and in particular to a kind of taper water inlet for improving the unstable hydraulic characteristic(s) of axial-flow pump
Device.
Background technology
Axial-flow pump has the characteristics of flow is big, lift is low, be widely used in distruting water transregionally, agricultural irrigation and municipal administration to
The fields such as draining.Under design conditions, axial-flow pump flow condition is good, internal flow is stable, and now the hydraulic efficiency of pump is higher
And it is stable.But, under off-design behaviour during especially low flow rate condition, the change of impeller inlet inflow angle is not only drawn
Rise and produce at vacuum side of blade inlet side flow separation, also result in the increase of blade upper and lower surface pressure reduction and promote clearance leakage of blade tip stream to increase
By force.Vacuum side of blade separate stream with the flow direction of impeller blade-tip leakage flow with main flow direction conversely, simultaneously because being revolved by impeller
The impact for transferring to causes above-mentioned flowing to have larger circumferential speed, so as to clogging impeller inlet channel, deteriorates water pump influent stream
Condition, causes the hydraulic loss increase of pump, pump performance drastically to decline, and promotes the formation of waterpower unstable " saddle area ", seriously
Affect the safe and stable operation of axial-flow pump.
The content of the invention
The purpose of the present invention is the deficiency for existing axial-flow pump water feed apparatus, proposes that one kind improves the unstable water of axial-flow pump
The taper water feed apparatus of force characteristic, will not to design discharge and big flow operating mode under the hydraulic performance of pump produce considerable influence
In the case of, can fully improve the flow condition under low flow rate condition before axial-flow pump impeller import, axial-flow pump is completely eliminated unstable
The generation of " saddle area ", effectively widens the stable operating condition of axial-flow pump interval.
To realize the purpose of the present invention, adopt the following technical scheme that：
A kind of taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump, including trocar sheath, the two ends point of trocar sheath
Not Wei entrance point and the port of export, port of export outer wall is provided with outlet(discharge) flange, and the outlet(discharge) flange is uniformly distributed along the circumference 4～12 spiral shells
Hole, the port of export of trocar sheath is connected with the entrance point of axial-flow pump impeller room by outlet(discharge) flange, and the diameter D of the trocar sheath port of export
Equal to the entrance point diameter of axial-flow pump impeller room；
The entrance point outer wall of trocar sheath is provided with suction flange, and the suction flange is uniformly distributed along the circumference 4～12 screws, outward
The entrance point of sleeve pipe can be connected with inlet channel by suction flange；
Inner sleeve is provided with trocar sheath, there is gap between inner sleeve and trocar sheath, in the gap gusset is provided with, led to
Cross the gusset to be fixedly connected inner sleeve with trocar sheath, the whirlpool plate that disappears is provided with inner sleeve inside pipe wall.
The above inner sleeve outside wall surface passes through 4～6 gussets evenly distributed in the circumferential direction with outer sleeve inner wall face
Connection；6～18 evenly distributed in the circumferential direction whirlpool plates that disappear on the inwall of the inner sleeve；The import and export side of the gusset is equal
Carry out rounding to process to reduce water impact loss.
The structure and position dimension of trocar sheath of the present invention, inner sleeve, gusset and the whirlpool plate that disappears goes out to trocar sheath
Relative value on the basis of mouthful diameter D represents, is applied these relative value are multiplied by into trocar sheath outlet diameter D by of the invention
Actual size.
Preferably, the outlet of the trocar sheath is connected with the import of axial-flow pump impeller room by flange, and trocar sheath goes out
Mouth diameter D is equal to the inlet diameter of axial-flow pump impeller room；The cone angle of the trocar sheath be 5～60 °, inlet diameter be 1.05～
5D, is highly 0.05～3D；The import of the trocar sheath can be open, also can be connected by flange with inlet channel.
Used as a preferred technical solution of the present invention, the trocar sheath is the taper with identical taper with inner sleeve
Structure, entrance point diameter is big compared with the port of export.
Further, the thickness of the inner sleeve is 0.001～0.01D, inner sleeve and overcoat tube pitch be 0.005～
0.1D。
Further, the entrance point of the inner sleeve and the entrance point of trocar sheath are concordant, and the port of export of inner sleeve is higher than outer
The port of export of sleeve pipe, after trocar sheath is connected with axial-flow pump impeller room, the port of export of inner sleeve is at impeller leaf top；The inner sleeve
The import and export end of pipe is rounding design.
Further, whirlpool plate circumference uniform distribution is disappeared on the inwall of inner sleeve, the whirlpool plate that disappears is sector structure, on circumferencial direction
The angle of two sides is 5～20 °；The length of said vortex reducing plate is equal with the bus length of inner sleeve inside pipe wall, the thickness of the whirlpool plate that disappears
For 0.01～0.2D.
Preferably, the width of the gusset is 0.001～0.005D；The length of the gusset and the bus of outer sleeve inner wall
Equal length.
The above trocar sheath of the invention, suction flange, outlet(discharge) flange, inner sleeve, gusset and the whirlpool plate that disappears can be using gold
Category material, plastic material or pmma material processing and fabricating.
The present invention is based on fluid dynamic theory and axial-flow pump design theory, by axial-flow pump under low flow rate condition
On the basis of test measurement, the numerical simulation analysis of portion's Complex Flows, a kind of simple structure, the scientific and reasonable water inlet for being proposed
Device.
The invention has the beneficial effects as follows：
Inner sleeve in the present invention can be separated the main flow at the tip leakage flow at blade and blade top and impeller central,
Prevent clearance leakage of blade tip stream from affecting on the obstruction of main flow, while gusset can also reduce clearance leakage of blade tip stream circumferential speed causing
Hydraulic loss；The uniform whirlpool plate that disappears can play a part of to weaken the flowing that rotates in a circumferential direction before impeller inlet on inner sleeve inside pipe wall.
Therefore, the present invention substantially improves the influent stream condition under low flow rate condition before impeller, completely eliminates axial-flow pump waterpower unstable
" saddle area ", has effectively widened the safe and stable operation condition range of axial-flow pump.The simple structure and easy processing of the present invention makes,
Suitable for any kind of axial-flow pump.
Description of the drawings
Fig. 1 is the structural profile schematic diagram of the present invention；
Fig. 2 is the structure top view of the present invention；
Fig. 3 is the cross-section structure scale diagrams of the present invention；
Fig. 4 is the planar structure scale diagrams of the present invention；
Fig. 5 is the assembling schematic diagram of the embodiment of the present invention；
Fig. 6 is using the axial-flow pump hydraulic performance comparison diagram before and after the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in detail in embodiment.
As illustrated, the present invention relates to trocar sheath 1, suction flange 2, outlet(discharge) flange 3, inner sleeve 4, gusset 5, the whirlpool plate 6 that disappears,
The technical characteristics such as impeller 7, blade wheel chamber 8, blade wheel chamber's suction flange 9, wheel hub 10, pump shaft 11.
As depicted in figs. 1 and 2, a kind of taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump, including trocar sheath
1, the two ends of trocar sheath 1 are respectively entrance point and the port of export, and port of export outer wall is provided with outlet(discharge) flange 3, the port of export of trocar sheath 1
It is connected by outlet(discharge) flange 3 with the entrance point of axial-flow pump impeller room, and the diameter D of the port of export of trocar sheath 1 is equal to axial-flow pump impeller
The entrance point diameter of room；
The entrance point outer wall of trocar sheath 1 is provided with suction flange 2, and the entrance point of trocar sheath 1 can pass through with inlet channel
Suction flange 2 connects；
Inner sleeve 4 is provided with trocar sheath 1, there is gap between inner sleeve 4 and trocar sheath 1, in the gap muscle is provided with
Plate 5, is fixedly connected inner sleeve 4 with trocar sheath 1 by gusset 5, and on the inwall of inner sleeve 4 the whirlpool plate 6 that disappears is provided with.
Trocar sheath 1, suction flange 2, outlet(discharge) flange 3, inner sleeve 4, gusset 5 and the whirlpool plate 6 that disappears can be using metal material, modelings
Material material or pmma material processing and fabricating.
The structure and position dimension of trocar sheath 1, inner sleeve 4, gusset 5 and the whirlpool plate 6 that disappears is to the outlet diameter of trocar sheath 1
Relative value on the basis of D represents that be applied reality of the invention by these relative value are multiplied by into the outlet diameter D of trocar sheath 1
Size.
As shown in Figure 3 and Figure 4, trocar sheath 1 is the pyramidal structure with identical taper, entrance point diameter with inner sleeve 4
It is big compared with the port of export.The cone angle of trocar sheath 1 is 5～60 °, inlet diameter D1 is 1.05～5D, and height H is 0.05～3D；Trocar sheath
Import open can use, also can be connected by flange with inlet channel；Suction flange 2 is uniformly distributed along the circumference 4～12 screws, goes out
Mouthful flange 3 is uniformly distributed along the circumference 4～12 screws；Inner sleeve 4 is positioned at the inside of trocar sheath 1 and both surfaces are parallel, institute's shape
Into gap vertical dimension T1 be 0.005～0.1D；The inlet side of inner sleeve 4 and the inlet side flush of trocar sheath 1；Inner sleeve
4 outlet is in the outlet higher than trocar sheath 1；The import and export side of inner sleeve 4 carries out rounding to reduce water impact loss；
The thickness T3 of inner sleeve 4 is 0.001～0.01D；The outer wall of inner sleeve 4 is with the inwall of trocar sheath 1 by uniform cloth in the circumferential direction
4～6 gussets 5 put connect；The import and export side of gusset 5 carries out rounding and processes to reduce water impact loss；Gusset 5
Width T2 is 0.001～0.005D；The length of gusset is equal with the inwall bus length of trocar sheath, is L1；The inwall of inner sleeve 4
Upper 6～18 evenly distributed in the circumferential direction whirlpool plates 6 that disappear；The corresponding angle θ in a circumferential direction of whirlpool plate 6 that disappears is 5～20 °；Disappear
The length of whirlpool plate is equal with the bus length of inner sleeve inside pipe wall, is L2, and the thickness T4 of the whirlpool plate that disappears is 0.01～0.2D.
Embodiment 1
As shown in figure 5, wherein, the outlet Jing of trocar sheath 1 flanges 3 are connected with blade wheel chamber suction flange 9, trocar sheath inlet diameter
D is equal to the inlet diameter 290mm of blade wheel chamber 8, the cone angle of trocar sheath 1 is 15 °, be highly 230mm, inlet diameter be 350mm, outward
Sleeve pipe suction flange is connected with inlet channel, and inner sleeve 4 is 5mm and by the uniform gusset 5 of 4 circumferences with the spacing of trocar sheath 1
Connection, the thickness of inner sleeve 4 is 1.2mm, and the width of gusset 5 is 2mm, and 12 whirlpool plates 6 that disappear are evenly distributed on inner sleeve inside pipe wall, and disappear whirlpool
The inlet side distance that the corresponding angle in a circumferential direction of plate 6 is 10 °, thickness is 10mm, inner sleeve and impeller blade is 8mm.
As shown in fig. 6, using Three Dimensional Flow Simulation method, relative analyses are using the axial-flow pump device before and after the present invention
Hydraulic performance curve can be found that：The taper water feed apparatus of the present invention can eliminate " horse unstable in axial-flow pump hydraulic performance
Saddle area ", thereby may be ensured that axial-flow pump stable operation under full flow operating mode, effectively widen the safe and stable operation work of axial-flow pump
Condition is interval.
Claims (9)
1. a kind of taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump, is characterized in that：Including trocar sheath (1), overcoat
The two ends of pipe (1) are respectively entrance point and the port of export, and port of export outer wall is provided with outlet(discharge) flange (3), the port of export of trocar sheath (1)
It is connected by outlet(discharge) flange (3) with the entrance point of axial-flow pump impeller room, and the diameter D of trocar sheath (1) port of export is equal to axial-flow pump
The entrance point diameter of blade wheel chamber；
The entrance point outer wall of trocar sheath (1) is provided with suction flange (2), and the entrance point of trocar sheath (1) can be logical with inlet channel
Cross suction flange (2) connection；
Inner sleeve (4) is provided with trocar sheath (1), there is gap between inner sleeve (4) and trocar sheath (1), arranged in the gap
There is gusset (5), be fixedly connected inner sleeve (4) with trocar sheath (1) by gusset (5), on inner sleeve (4) inwall the whirlpool that disappears is provided with
Plate (6).
2. the taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump according to claim 1, is characterized in that：Overcoat
Pipe (1) is the pyramidal structure with identical taper with inner sleeve (4), and entrance point diameter is big compared with the port of export.
3. the taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump according to claim 2, is characterized in that：Overcoat
The cone angle of pipe (1) is 5～60 °, is highly 0.05～3D, a diameter of 1.05～5D of trocar sheath (1) entrance point.
4. the taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump according to claim 3, is characterized in that：It is described
The thickness of inner sleeve (4) is 0.001～0.01D, and inner sleeve (4) is 0.005～0.1D with trocar sheath (1) spacing.
5. the taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump according to claim 2, is characterized in that：It is described
The entrance point of inner sleeve (4) is concordant with the entrance point of trocar sheath (1), and the port of export of inner sleeve (4) is higher than the outlet of trocar sheath (1)
End, after trocar sheath (1) is connected with axial-flow pump impeller room, the port of export of inner sleeve (4) is at impeller leaf top；The inner sleeve
(4) import and export end is rounding design.
6. the taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump according to claim 2, is characterized in that：Disappear whirlpool
On the inwall of inner sleeve (4), the whirlpool plate (6) that disappears is sector structure to plate (6) circumference uniform distribution, and the angle of two sides is on circumferencial direction
5～20 °；The length of said vortex reducing plate (6) is equal with the bus length of inner sleeve inside pipe wall, and the thickness of the whirlpool plate (6) that disappears is 0.01～
0.2D。
7. the taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump according to claim 1, is characterized in that：It is described
Suction flange (2) is uniformly distributed along the circumference 4～12 screws.
8. the taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump according to claim 1, is characterized in that：It is described
Outlet(discharge) flange (3) is uniformly distributed along the circumference 4～12 screws.
9. the taper water feed apparatus for improving the unstable hydraulic characteristic(s) of axial-flow pump according to claim 1, is characterized in that：It is described
The width of gusset (5) is 0.001～0.005D, and the length of gusset (5) is equal with the bus length of trocar sheath (1) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611090536.2A CN106640769B (en) | 2016-12-01 | 2016-12-01 | A kind of taper water feed apparatus improving the unstable hydraulic characteristic(s) of axial-flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611090536.2A CN106640769B (en) | 2016-12-01 | 2016-12-01 | A kind of taper water feed apparatus improving the unstable hydraulic characteristic(s) of axial-flow pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640769A true CN106640769A (en) | 2017-05-10 |
| CN106640769B CN106640769B (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611090536.2A Active CN106640769B (en) | 2016-12-01 | 2016-12-01 | A kind of taper water feed apparatus improving the unstable hydraulic characteristic(s) of axial-flow pump |
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| Country | Link |
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| CN (1) | CN106640769B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111079367A (en) * | 2019-11-28 | 2020-04-28 | 河海大学 | Axial flow pump spoke optimization design method suitable for different water inlet taper pipes |
| CN112177831A (en) * | 2020-10-28 | 2021-01-05 | 西安理工大学 | Bidirectional through-flow turbine with runner chamber in sawtooth structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678630A (en) * | 2012-05-29 | 2012-09-19 | 南京蓝深制泵(集团)股份有限公司 | Water inlet device capable of suppressing saddle-shaped curve of pumping head of axial flow pump |
| CN202500823U (en) * | 2012-03-05 | 2012-10-24 | 扬州大学 | Composite type flare tube |
| CN203146426U (en) * | 2013-02-05 | 2013-08-21 | 扬州大学 | Novel axial flow pump |
| CN105697421A (en) * | 2016-03-23 | 2016-06-22 | 江苏大学 | Saddle-area-free axial flow fan |
| CN105782121A (en) * | 2016-04-07 | 2016-07-20 | 扬州大学 | Axial flow pump |
| KR101646200B1 (en) * | 2016-05-09 | 2016-08-05 | 동해엔지니어링주식회사 | Apparatus for suction vane of axial and mixed flow pump |
| CN206221381U (en) * | 2016-12-01 | 2017-06-06 | 河海大学 | A kind of axial-flow pump water feed apparatus |
-
2016
- 2016-12-01 CN CN201611090536.2A patent/CN106640769B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202500823U (en) * | 2012-03-05 | 2012-10-24 | 扬州大学 | Composite type flare tube |
| CN102678630A (en) * | 2012-05-29 | 2012-09-19 | 南京蓝深制泵(集团)股份有限公司 | Water inlet device capable of suppressing saddle-shaped curve of pumping head of axial flow pump |
| CN203146426U (en) * | 2013-02-05 | 2013-08-21 | 扬州大学 | Novel axial flow pump |
| CN105697421A (en) * | 2016-03-23 | 2016-06-22 | 江苏大学 | Saddle-area-free axial flow fan |
| CN105782121A (en) * | 2016-04-07 | 2016-07-20 | 扬州大学 | Axial flow pump |
| KR101646200B1 (en) * | 2016-05-09 | 2016-08-05 | 동해엔지니어링주식회사 | Apparatus for suction vane of axial and mixed flow pump |
| CN206221381U (en) * | 2016-12-01 | 2017-06-06 | 河海大学 | A kind of axial-flow pump water feed apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 张睿: "轴流泵失速和空化流动特性及其性能改善研究", 《中国博士学位论文全文数据库 基础科学辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111079367A (en) * | 2019-11-28 | 2020-04-28 | 河海大学 | Axial flow pump spoke optimization design method suitable for different water inlet taper pipes |
| CN111079367B (en) * | 2019-11-28 | 2022-02-01 | 河海大学 | Axial flow pump spoke optimization design method suitable for different water inlet taper pipes |
| CN112177831A (en) * | 2020-10-28 | 2021-01-05 | 西安理工大学 | Bidirectional through-flow turbine with runner chamber in sawtooth structure |
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| Publication number | Publication date |
|---|---|
| CN106640769B (en) | 2019-03-29 |
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