CN107489655A - Pump installation bell-shaped inflow passage with the suitable flowing plate of activity - Google Patents
Pump installation bell-shaped inflow passage with the suitable flowing plate of activity Download PDFInfo
- Publication number
- CN107489655A CN107489655A CN201710903051.9A CN201710903051A CN107489655A CN 107489655 A CN107489655 A CN 107489655A CN 201710903051 A CN201710903051 A CN 201710903051A CN 107489655 A CN107489655 A CN 107489655A
- Authority
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- China
- Prior art keywords
- flowing plate
- activity
- suitable flowing
- coupling spindle
- water inlet
- Prior art date
- 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
-
- 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
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/548—Specially adapted for liquid pumps
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of pump installation bell-shaped inflow passage with the suitable flowing plate of activity, belong to hydraulic engineering technical field.Including dividing pier, semicircle rear wall, oviduct and the water guide cone being placed in water inlet flow channel, provided with the suitable flowing plate of activity and alignment pin, suitable flowing plate can make the change for adapting to asymmetry quantum dot using pressure differential, and the activity fits flowing plate and is located at water inlet flow channel rear wall and gap is left between rear wall；Section and runner plane perpendicular, the both ends of coupling spindle are individually fixed in bell-shaped inflow passage bottom and loudspeaker pipe outer wall where the suitable flowing plate, and suitable flowing plate one end is connected by sleeve pipe with coupling spindle, and can be rotated around coupling spindle；Alignment pin is two, is respectively placed in suitable flowing plate both sides, and is fixed on bell-shaped inflow passage bottom, and the distance of two alignment pins to coupling spindle is respectively less than the length of suitable flowing plate.The present invention is applied to bell-shaped inflow passage and box water inlet flow channel, can adapt to various operating conditions, improves pump assembly efficiency, operating cost is few, more efficient energy-saving.
Description
Technical field
The present invention relates to a kind of pump installation bell-shaped inflow passage with the suitable flowing plate of activity, belong to hydraulic engineering technology neck
Domain.
Background technology
Bell-shaped inflow passage is a kind of relatively good water inlet flow channel form, is widely used in vertical axial-flow pump installation.
The horizontal contraction of water movement experience of bell-shaped inflow passage, suction chamber to oviduct adjust, that is, accelerate and turn to, in water inlet flow channel
Outlet Section velocity ratio is more uniform.But compared with elbow inlet passage, the Outlet Section uniformity of bell-shaped inflow passage is poor
Some.
For Large Scale Axial-flow Pump Unit, middle dividing pier is provided with water inlet flow channel.Experimental study shows water inlet flow channel interval
The current of pier both sides are not symmetric.Flow rate of water flow in water pump direction of rotation and direction of flow identical side downstream is low
In the mean flow rate of section, and the flow rate of water flow in the water pump direction of rotation against the current side opposite with direction of flow is higher than section
Mean flow rate.Which results in its Outlet Section velocity flow profile uniformity to have declined.
And the flow in the medium-and-large-sized pumping plant water inlet flow channel of Practical Project at left and right sides of dividing pier is usually, current confluence
Not at runner center, become a mandarin so asymmetry should be fully taken into account in the process of optimization of bell-shaped inflow passage to runner stream
The influence of state, if design is improper will drastically to deteriorate pump installation performance.
The dividing plate of a guide functions is generally set up in the middle part of the rear wall of water inlet flow channel improves fluidised form, dividing plate direction one
As it is consistent with runner center line, this scheme only disappears whirlpool significant effect in the case of symmetrical become a mandarin, but be fixedly installed every
Plate can not realize the dynamic equilibrium that water-flow equation is realized under different operating conditions.
The content of the invention
The purpose of the present invention is to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of pump installation clock with the suitable flowing plate of activity
Type water inlet flow channel.Suitable flowing plate can make adaptive change under the water flow pressure difference effect of both sides to the non-uniform flow of current,
Automatic adjusting position makes the distribution of water inlet flow channel exit velocity more uniform, can preferably play the whirlpool that disappears, water conservancy diversion to current confluence
Effect, it is ensured that pumping plant performance and stable operation of unit.
The purpose of the present invention is achieved through the following technical solutions：Pump installation bell feed water flow with the suitable flowing plate of activity
Road, including water pump and the dividing pier and water guide cone that are placed in water inlet flow channel, water pump are provided with water pump vane, oviduct, oviduct
It is placed in water inlet flow channel, the water inlet flow channel is bell-shaped inflow passage, and the rear wall of water inlet flow channel is semicircle rear wall；The water guide
Cone is arranged on the water inlet flow channel bottom plate of oviduct bottom, and dividing pier is arranged at entering between water guide cone and the water inlet of water inlet flow channel
On water flow passage bottom plate；It is characterized in that provided with the suitable flowing plate of activity and alignment pin, the activity is fitted flowing plate and is located at water inlet flow channel rear wall
And gap is left between rear wall；The suitable flowing plate of activity is made up of rotatable suitable flowing plate, the coupling spindle of fixation and sleeve pipe, is joined
The both ends of spindle are individually fixed in bell-shaped inflow passage bottom and loudspeaker pipe outer wall；Section and runner bottom surface where the suitable flowing plate
Vertically, fit flowing plate one end by sleeve pipe with coupling spindle to be connected, and can be rotated around coupling spindle；The alignment pin is two, is respectively
Alignment pin I, alignment pin II, two alignment pins are respectively placed in suitable flowing plate both sides, and are fixed on bell-shaped inflow passage bottom, two alignment pins
Distance to coupling spindle is respectively less than the length of suitable flowing plate.
Further, 5mm gap is left between the suitable flowing plate and rear wall, the horizontal section center line for fitting flowing plate is initial
Position is consistent with water inlet flow channel center line, and coupling spindle and sleeve pipe direction are consistent with the pump shaft direction of water pump.
Further, the plane of the suitable flowing plate（Cross section）Shape is made up of rectangle, the semi-circular of rectangle both ends.
Further, the length L of the suitable flowing plategFor 0.6D, thickness b1For 0.1D, heighth 1For 0.35D,DFor water pump
Impeller diameter.
Further, the coupling spindle is cylinder, and coupling spindle is away from water pump vane center 0.825D, the height of coupling spindleh 3
For 0.41D, connection shaft diameter d1For 0.06D,DFor water pump vane diameter.
Further, the height of described sleeve pipe is 0.35D, casing diameterd 2For 0.067D,DFor water pump vane diameter.
Further, using coupling spindle axle center as the center of circle, the horizontal section center line that suitable flowing plate is placed in when at alignment pin I is boundary
Line, the deflection angle of alignment pin I is -10 °, and the deflection angle of alignment pin II is 40 °, and suitable flowing plate rotation direction is limited to be inverse with alignment pin
Hour hands, slewing area automatic adjusting position to current confluence, preferably play a part of the whirlpool water conservancy diversion that disappears at 0 ° -30 °.
Further, the alignment pin diameter 0.05D, height 0.2D, alignment pin is apart from the axle center 0.45 of coupling spindleD, D
For water pump vane diameter.
Further, the suitable flowing plate is made using aluminium alloy or glass-reinforced plastic material, and the coupling spindle and sleeve pipe use
Stainless steel material makes, and the alignment pin makes of ordinary steel.
The present invention adapts to asymmetric velocity flow profile by changing the suitable flowing plate position of bell-shaped suction box rear wall, can be with
Improve the velocity flow profile of runner exit, current is realized the dynamic equilibrium of water-flow equation under different operating conditions, so as to improve
The runnability of water inlet flow channel hydraulic characteristic(s) and pumping plant.
The present invention is applied to bell-shaped inflow passage and box water inlet flow channel, can adapt to various operating conditions, makes feed water flow
Outlet velocity flow profile in road is more uniform, reduces hydraulic loss, improves pump assembly efficiency, operating cost is few, more efficient energy-saving.
Brief description of the drawings
Fig. 1 is the elevation of the present invention；
Fig. 2 is A portions enlarged drawing in Fig. 1；
Fig. 3 is the plan of the present invention；
Fig. 4 is B portions enlarged drawing in Fig. 3；
Fig. 5 is the side view of the present invention；
Fig. 6 is the three-dimensional line block diagram of the present invention；
In figure：1 water inlet flow channel, 2 rear walls, 3 dividing piers, 4 oviducts, 5 water guide cones, 6 suitable flowing plates, 7 sleeve pipes, 8 coupling spindles, 9 alignment pins
Ith, 10 alignment pin II.
Embodiment
The present invention is applied to bell-shaped inflow passage and box water inlet flow channel, and design drawing is required according to the design.
Pump installation bell-shaped inflow passage with the suitable flowing plate of activity, including the dividing pier 3, semicircle being placed in water inlet flow channel 1
Rear wall 2, oviduct 4 and water guide cone 5, the suitable flowing plate of activity, alignment pin, the suitable flowing plate of the activity be located at water inlet flow channel rear wall 2 and with
5mm gap is left between rear wall 2.
The suitable flowing plate of activity is made up of rotatable suitable flowing plate 6, fixed coupling spindle 8, sleeve pipe 7, fit the place section of flowing plate 6 with
The plane perpendicular of water inlet flow channel 1, the horizontal section center line initial position of suitable flowing plate 6 is consistent with the center line of water inlet flow channel 1, coupling spindle
8 and the direction of sleeve pipe 7 it is consistent with pump shaft direction.
The mid-plane of suitable flowing plate 6 is shaped as rectangle, and it is semicircle to fit the rear and front end flat shape of flowing plate 6；The top of suitable flowing plate
Minister's degree LgFor 0.6D, thickness b1For 0.1D, height hgFor 0.35D, rear wall is semicircle.
Coupling spindle 8 is cylinder, and the both ends of coupling spindle 8 are fixed on bell-shaped inflow passage bottom and loudspeaker pipe outer wall, connection
Axle 8 is away from impeller central 0.825D；The height of coupling spindle 8 is 0.41D, with the hanging high h of oviduct horn mouthcIt is equal, shaft diameterd 1For
0.05D；The height of sleeve pipe 7 is 0.35D, the diameter d of sleeve pipe 72For 0.067D,DFor impeller diameter.
The suitable flowing plate of activity can follow incoming to be rotated around coupling spindle automatically, with shop bolt limit its slewing area 0 °-
30 °, automatic adjusting position to current confluence, preferably play a part of the whirlpool water conservancy diversion that disappears.
Shop bolt is fixed on the bottom of water inlet flow channel 1, diameter 0.05D, height 0.2D.Its position is：With coupling spindle
8 axle center radius 0.45DPlace, the section center of circle radius anglec of rotation of alignment pin II 10 is 40 °, the section center of circle half of alignment pin I 9
The footpath anglec of rotation is -10 °, it is ensured that suitable flowing plate rotates in the range of 0 ° -30 °.
Suitable flowing plate 6 is made using aluminium alloy or glass-reinforced plastic material, and coupling spindle and sleeve pipe are made using stainless steel material, fixed
Position pin makes of ordinary steel.
Water inlet flow channel 1 designs according to relevant criterion, widthBRecommendation takes 2.8D。
According to the processing installation of relevant standard suitable flowing plate 6, coupling spindle 8 and alignment pin（Nail）, the rigidity of coupling spindle 8 should ensure that pair
The support of suitable flowing plate, the pre-buried alignment pin on bottom plate（Nail）.
The suitable place section of flowing plate 6 and cross section perpendicular where the bottom of water inlet flow channel 1, after the suitable flowing plate of activity is located at water inlet flow channel 1
5mm gap is left at wall 2 and between rear wall 2, it is ensured that suitable flowing plate rotates freely.
Before installation, first suitable flowing plate 6 is connected with coupling spindle 8 with sleeve pipe 7, surface guarantee is smooth, with turning for the suitable flowing plate 6 of profit
It is dynamic.
The built-in metal component flange in oviduct 4 and the bottom plate of water inlet flow channel 1, the upper end of coupling spindle 8 are fixed on outside oviduct 4
Wall, the lower end of coupling spindle 8 are fixed on the bottom of water inlet flow channel 1.Fixed form is that flange bolt is connected or welded.
Claims (9)
1. a kind of pump installation bell-shaped inflow passage with the suitable flowing plate of activity, including water pump and it is placed in water inlet flow channel（1）Interior
Dividing pier（3）And water guide cone（5）, water pump is provided with water pump vane, oviduct（4）, oviduct（4）It is placed in water inlet flow channel（1）It is interior, institute
State water inlet flow channel（1）For bell-shaped inflow passage, water inlet flow channel（1）Rear wall be semicircle rear wall（2）；The water guide cone（5）If
It is placed in oviduct（4）The water inlet flow channel of bottom（1）On bottom plate, dividing pier（3）It is arranged at water guide cone（5）With water inlet flow channel（1）Enter
Water inlet flow channel between the mouth of a river（1）On bottom plate；It is characterized in that fit flowing plate position provided with the suitable flowing plate of activity and alignment pin, the activity
In water inlet flow channel（1）Semicircle rear wall（2）Place and with semicircle rear wall（2）Between leave gap；The suitable flowing plate of activity by
Rotatable suitable flowing plate（6）, sleeve pipe（7）With fixed coupling spindle（8）Composition, coupling spindle（8）Both ends be individually fixed in into water
Runner（1）Bottom and oviduct（4）Outer wall；The suitable flowing plate（6）Place section and water inlet flow channel（1）Plane perpendicular, fit stream
Plate（6）One end and sleeve pipe（7）It is fixed, and pass through sleeve pipe（7）With coupling spindle（8）It is connected, and can be around coupling spindle（8）Rotate；It is described
Alignment pin is two, is alignment pin I respectively（9）, alignment pin II（10）, two alignment pins are respectively placed in suitable flowing plate（6）Both sides, and it is solid
Due to water inlet flow channel（1）Bottom, two alignment pins to coupling spindle（8）Distance be respectively less than suitable flowing plate（6）Length.
2. the pump installation bell-shaped inflow passage according to claim 1 with the suitable flowing plate of activity, it is characterized in that, the suitable stream
Plate（6）With semicircle rear wall（2）Between leave 5mm gap, fit flowing plate（6）Horizontal section center line initial position with water inlet
Runner（1）Center line is consistent, coupling spindle（8）And sleeve pipe（7）Direction is consistent with the pump shaft direction of water pump.
3. the pump installation bell-shaped inflow passage according to claim 1 with the suitable flowing plate of activity, it is characterized in that, the suitable stream
Plate（6）Flat shape be made up of the semicircle of rectangle, rectangle both ends.
4. the pump installation bell-shaped inflow passage according to claim 1 with the suitable flowing plate of activity, it is characterized in that, the suitable stream
Plate（6）LengthL gFor 0.6D, thicknessb 1For 0.1D, heighth 1For 0.35D,DFor water pump vane diameter.
5. the pump installation bell-shaped inflow passage according to claim 1 with the suitable flowing plate of activity, it is characterized in that, the connection
Axle（8）For cylinder, coupling spindle（8）Away from water pump vane center 0.825D, coupling spindle（8）Height h3For 0.41D, coupling spindle
（8）Diameter d1For 0.06D,DFor water pump vane diameter.
6. the pump installation bell-shaped inflow passage according to claim 1 with the suitable flowing plate of activity, it is characterized in that, described sleeve pipe
（7）Height be 0.35D, casing diameterd 2For 0.067D,DFor water pump vane diameter.
7. the pump installation bell-shaped inflow passage according to claim 1 with the suitable flowing plate of activity, it is characterized in that, with coupling spindle
（8）Axle center is the center of circle, fits flowing plate（6）It is placed in alignment pin I（9）Horizontal section center line during place is boundary line, alignment pin I（9）'s
Deflection angle is -10 °, alignment pin II（10）Deflection angle be 40 °, limit suitable flowing plate slewing area at 0 ° -30 ° with alignment pin.
8. the pump installation bell-shaped inflow passage according to claim 1 with the suitable flowing plate of activity, it is characterized in that, the positioning
Sell diameter 0.05D, height 0.2 D, alignment pin is apart from the axle center 0.45 of coupling spindleD, DFor water pump vane diameter.
9. the pump installation bell-shaped inflow passage according to claim 1 with the suitable flowing plate of activity, it is characterized in that, the suitable stream
Plate（6）Made using aluminium alloy or glass-reinforced plastic material, the coupling spindle（8）And sleeve pipe（7）Made using stainless steel material, institute
Alignment pin is stated to make of ordinary steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710903051.9A CN107489655B (en) | 2017-09-29 | 2017-09-29 | Pump installation bell-shaped inflow passage with the suitable flowing plate of activity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710903051.9A CN107489655B (en) | 2017-09-29 | 2017-09-29 | Pump installation bell-shaped inflow passage with the suitable flowing plate of activity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489655A true CN107489655A (en) | 2017-12-19 |
| CN107489655B CN107489655B (en) | 2019-06-07 |
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ID=60653636
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710903051.9A Active CN107489655B (en) | 2017-09-29 | 2017-09-29 | Pump installation bell-shaped inflow passage with the suitable flowing plate of activity |
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| Country | Link |
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| CN (1) | CN107489655B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235546A (en) * | 2018-11-28 | 2019-01-18 | 扬州大学 | Forebay of Pumping Station adjustable plate-type column |
| CN113309730A (en) * | 2021-06-24 | 2021-08-27 | 襄阳五二五泵业有限公司 | Vertical pipeline pump with uniformly distributed inlet flow field speed |
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| JPH07286598A (en) * | 1994-04-15 | 1995-10-31 | Mitsubishi Heavy Ind Ltd | Centrifugal fan provided with fluid deflector |
| CN201090513Y (en) * | 2007-09-29 | 2008-07-23 | 上海凯士比泵有限公司 | Stream intake path without swirl of water pump |
| CN201581663U (en) * | 2009-12-30 | 2010-09-15 | 扬州大学 | Novel combined type vortex eliminating and preventing pump station intake sump |
| CN103790838A (en) * | 2014-02-13 | 2014-05-14 | 扬州大学 | Two-way low lift water pumping device shaped like Omega in Greek letters |
| CN104373387A (en) * | 2014-10-27 | 2015-02-25 | 扬州大学 | Bell inlet passage excellent in hydraulic performance and application method thereof |
| CN104818699A (en) * | 2015-04-01 | 2015-08-05 | 扬州大学 | 1/4 elliptic cone conical table eddy eliminating device and method for closed intake pool |
| CN105275885A (en) * | 2015-10-14 | 2016-01-27 | 江苏国泉泵业制造有限公司 | Design method for bell-shaped water inlet flow way |
| CN206360895U (en) * | 2016-09-29 | 2017-07-28 | 扬州大学 | A kind of Contiuum type model test pump installation |
-
2017
- 2017-09-29 CN CN201710903051.9A patent/CN107489655B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07286598A (en) * | 1994-04-15 | 1995-10-31 | Mitsubishi Heavy Ind Ltd | Centrifugal fan provided with fluid deflector |
| CN201090513Y (en) * | 2007-09-29 | 2008-07-23 | 上海凯士比泵有限公司 | Stream intake path without swirl of water pump |
| CN201581663U (en) * | 2009-12-30 | 2010-09-15 | 扬州大学 | Novel combined type vortex eliminating and preventing pump station intake sump |
| CN103790838A (en) * | 2014-02-13 | 2014-05-14 | 扬州大学 | Two-way low lift water pumping device shaped like Omega in Greek letters |
| CN104373387A (en) * | 2014-10-27 | 2015-02-25 | 扬州大学 | Bell inlet passage excellent in hydraulic performance and application method thereof |
| CN104818699A (en) * | 2015-04-01 | 2015-08-05 | 扬州大学 | 1/4 elliptic cone conical table eddy eliminating device and method for closed intake pool |
| CN105275885A (en) * | 2015-10-14 | 2016-01-27 | 江苏国泉泵业制造有限公司 | Design method for bell-shaped water inlet flow way |
| CN206360895U (en) * | 2016-09-29 | 2017-07-28 | 扬州大学 | A kind of Contiuum type model test pump installation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235546A (en) * | 2018-11-28 | 2019-01-18 | 扬州大学 | Forebay of Pumping Station adjustable plate-type column |
| GB2579431A (en) * | 2018-11-28 | 2020-06-24 | Univ Yangzhou | Adjustable plate type column for forebay of pumping station |
| GB2579431B (en) * | 2018-11-28 | 2020-12-16 | Univ Yangzhou | Adjustable plate type column for forebay of pumping station |
| CN113309730A (en) * | 2021-06-24 | 2021-08-27 | 襄阳五二五泵业有限公司 | Vertical pipeline pump with uniformly distributed inlet flow field speed |
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|---|---|
| CN107489655B (en) | 2019-06-07 |
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