CN105485053B - A kind of horizontal pump installation outlet passage of prefix type and application process - Google Patents
A kind of horizontal pump installation outlet passage of prefix type and application process Download PDFInfo
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- CN105485053B CN105485053B CN201610046683.3A CN201610046683A CN105485053B CN 105485053 B CN105485053 B CN 105485053B CN 201610046683 A CN201610046683 A CN 201610046683A CN 105485053 B CN105485053 B CN 105485053B
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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
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
Abstract
The invention discloses a kind of horizontal pump installation outlet passage of the excellent prefix type of hydraulic performance and application process, belong to hydraulic engineering pumping plant technical field.Outlet passage three-dimensional body flow-passing surface provided by the present invention is obtained by the Optimum Hydraulic Design research method based on CFD；The outlet passage is made up of import round platform section, curve transition and outlet ascent stage, and the section configuration of outlet passage is faded to the rectangle of outlet by the circle of import；Offer curves changeover portion elevational schematic view（Line containing cross section place）, floor map（Line containing cross section place）With cross dimensions tables of data；Each physical dimension of the outlet passage flow-passing surface is used to water pump vane diameterD 0On the basis of relative value represent；The outlet passage main geometric parameters can be adjusted within the specific limits, to adapt to the actual conditions of different pumping plants.Using the obtained horizontal pump installation outlet passage flow direction-changing of prefix type of the invention is orderly, diffusion is gentle, the runner loss of flood peak is small.
Description
Technical field
The invention belongs to hydraulic engineering pumping plant technical field, and in particular to a kind of excellent prefix type horizontal pump of hydraulic performance
Device outlet passage and application process, it is adaptable to instruct engineers and technicians to design the preposition vertical shaft type of high-performance big flow pumping plant and pass through
Flow going out for pump installation, preposition bulb-type tubular pump, the horizontal shaft extension pump installation of preposition motor and preposition horizontal submersible pump device
Water flow passage.
Background technology
Large-scale low-lift-head pumping station is widely used in Water Resources Allocation, agricultural drainage and irrigation, water environment treatment and Urban Waterlogging etc. and permitted
More important field.Rated lift more employs the good horizontal pump installation of hydraulic performance in below 3m big flow pumping plant.It is sleeping
Formula pump installation is divided into two kinds of basic patterns of prefix type and postposition type, and every kind of basic pattern includes bulb-type, vertical shaft type, shaft extension type again
With a variety of patterns such as submersible pump type.Although the water inlet flow channel of the horizontal pump installation of the prefix type of different types differs from one another, difference very
Greatly, special design need to be carried out to water inlet flow channel according to the different characteristics of various types, but their outlet passage actually has
There are essentially identical condition and requirement, unified Optimum Hydraulic Design can be carried out and identical application process is used, to enter
One step improves the hydraulic performance of outlet passage and to realize that standardized designs lay the foundation.
The content of the invention
There is provided a kind of horizontal pump installation of the excellent prefix type of hydraulic performance aiming above mentioned problem for the purpose of the present invention
Outlet passage and application process.The invention is characterized in that：The outlet passage three-dimensional body flow-passing surface provided passes through based on CFD's
Optimum Hydraulic Design research method is obtained；The outlet passage is made up of import round platform section, curve transition and outlet ascent stage,
The section configuration of curve transition is faded to the rectangle of outlet by the circle of import；The institute of the cross section place containing curve transition is provided
State outlet passage elevational schematic view, floor map and cross dimensions tables of data；Each dimensioning of the outlet passage flow-passing surface
It is very little to be used to water pump vane diameter D0On the basis of relative value represent, by relative value be multiplied by pumping plant intend use water pump vane diameter
D0The size that the pumping plant outlet passage is actually needed can be obtained；The outlet passage main geometric parameters can be entered within the specific limits
Row adjustment, has the actual conditions of different flows, lift and water outlet pool water level to adapt to different pumping plants.Obtained using the present invention
The horizontal pump installation outlet passage flow direction-changing of prefix type in order, diffusion is gentle, the runner loss of flood peak is small, for ensuring big flow
Pumping plant is safe and stable and Effec-tive Function is significant.
To realize the purpose of the present invention, adopt the following technical scheme that：
1. a kind of horizontal pump installation outlet passage of the excellent prefix type of hydraulic performance, the outlet passage is used based on CFD's
Optimum Hydraulic Design research method is obtained, and proves that its hydraulic performance is excellent after tested, loss of flood peak during design discharge is less than
0.20m, succeeds application in big flow pumping plant；
The outlet passage includes import round platform section, curve transition and the outlet ascent stage set gradually；Curve transition
The section configuration of section is faded to the rectangle of Outlet Section by the circle of admission section；Export and middle dividing pier is provided with the ascent stage；
Each physical dimension of outlet passage is used to water pump vane diameter D0On the basis of relative value represent；
The length L of the import round platform sectionRound platform section=0.704D0, admission section diameter DRound platform section import=1.052D0, Outlet Section
Diameter DThe outlet of round platform section=1.166D0；
The length L of the curve transitionChangeover portion=1.970D0, Outlet Section width BChangeover portion is exported=1.646D0, Outlet Section
Height HChangeover portion is exported=1.333D0；The outlet passage elevational schematic view, the plane signal of the cross section place containing curve transition are provided
Figure and cross dimensions tables of data；Cross dimensions includes the facade top line coordinates (X of each section1i, Y1i), the following line coordinates of facade
(X2i, Y2i), profile height Hwi, section width BwiWith transitional radius Rwi, each section numbering i and data are listed in table 1；
The outlet passage curve transition cross dimensions tables of data of table 1
The length L of the outlet ascent stageAscent stage=2.573D0, base angle of inclination beta=5 °, Outlet Section width BAscent stage exports=
2.273D0, Outlet Section height HAscent stage exports=1.582D0；The length L of the middle dividing pierDividing pier=2.573D0, width BDividing pier=
0.8m, head arc radius RDividing pier head=0.4m, afterbody arc radius RDividing pier afterbody=0.4m.
2. a kind of application process of the horizontal pump installation outlet passage of the excellent prefix type of hydraulic performance, comprises the following steps：
(1) outlet passage includes import round platform section, curve transition and outlet ascent stage；The section of curve transition
Shape is faded to the rectangle of Outlet Section by the circle of admission section；Export and middle dividing pier is provided with the ascent stage；
(2) each physical dimension of the outlet passage is used to water pump vane diameter D0On the basis of relative value represent；
The length L of the import round platform sectionRound platform section=0.704D0, admission section diameter DRound platform section import=1.052D0, Outlet Section
Diameter DThe outlet of round platform section=1.166D0；
The length L of the curve transitionChangeover portion=1.970D0, Outlet Section width BChangeover portion is exported=1.646D0, Outlet Section
Height HChangeover portion is exported=1.333D0；The outlet passage elevational schematic view, the plane signal of the cross section place containing curve transition are provided
Figure and cross dimensions tables of data；Cross dimensions includes the facade top line coordinates (X of each section1i, Y1i), the following line coordinates of facade
(X2i, Y2i), profile height Hwi, section width BwiWith transitional radius Rwi, each section numbering i and data are listed in table 1；
The length L of the outlet ascent stageAscent stage=2.573D0, base angle of inclination beta=5 °, Outlet Section width BAscent stage exports=
2.273D0, Outlet Section height HAscent stage exports=1.582D0；The length L of the middle dividing pierDividing pier=2.573D0, width BDividing pier=
0.8m, head arc radius RDividing pier head=0.4m, afterbody arc radius RDividing pier afterbody=0.4m；
(3) the length L of the horizontal pump installation outlet passage import round platform section of the prefix typeRound platform section=0.704D0, can be according to pump
That stands is actually needed shortening or lengthening, but LRound platform sectionKnots modification be not more than 0.1D0；
(4) the horizontal pump installation outlet passage of the prefix type exports the length L of ascent stageAscent stage=2.573D0, can be according to going out
Water flow passage superstructure shortens or lengthened on this basis the need for arranging, but LAscent stageKnots modification be not more than 1.5D0；LAscent stageChange
After change, middle dividing pier length makees corresponding change；
(5) the horizontal pump installation outlet passage of the prefix type exports the width B of ascent stage Outlet SectionAscent stage exports=
2.273D0, reduce or increase on this basis the need for being arranged according to water pump assembly spacing, but BAscent stage exportsKnots modification it is little
In 0.15D0；
(6) the horizontal pump installation outlet passage of the prefix type exports base angle of inclination beta=5 ° of ascent stage, can be according to going out current
Road is reduced or increased on this basis the need for being connected with pumping plant discharge bay, but β knots modification is not more than 5 °, the section after β changes
The height of each section keeps constant；
(7) relative value of the horizontal each size of pump installation outlet passage of the prefix type is multiplied by the water pump leaf that pumping plant is intended using
Wheel diameter D0The size that the pumping plant outlet passage is actually needed can be obtained, in units of m；
(8) according to the geometric parameter of the outlet passage after calculating and adjustment, before drafting is required in mapping software
Put the horizontal pump installation outlet passage line chart of type.
Compared with prior art, the invention has the advantages that：
First, the horizontal pump installation outlet passage hydraulic performance of prefix type of the invention is excellent, be easy to engineers and technicians to adopt
With, it is ensured that the designing quality of outlet passage, for ensuring that the safe and stable and Effec-tive Function of big flow pumping plant has important meaning
Justice.
Second, the outlet passage main geometric parameters that the present invention is provided can be adjusted within the specific limits, be adapted to
Different pumping plants have the actual conditions of different flow, lift and water outlet pool water level.
3rd, the horizontal pump installation outlet passage hydraulic performance of prefix type that the present invention is provided is excellent, water during design discharge
Head loss is less than 0.20m, is succeeded application in big flow pumping plant.
4th, the outlet passage of the horizontal pump installation of prefix type of different types has essentially identical condition and requirement, this
Invention provides the outlet passage by unified Optimum Hydraulic Design, is easy to further improve its hydraulic performance and preposition to realize
The standardized designs of the horizontal pump installation outlet passage of type lay the foundation.
Brief description of the drawings
Fig. 1 a are outlet passage elevational schematic views of the present invention；
Fig. 1 b are outlet passage floor map of the present invention；
Fig. 1 c are the A in Fig. 1 a and Fig. 1 bi-AiSectional schematic diagram；
Fig. 2 a are outlet passage curve transition cross section place elevational schematic views of the present invention；
Fig. 2 b are outlet passage curve transition cross section place floor map of the present invention；
Fig. 3 is outlet passage import round platform segment length adjustment schematic diagram of the present invention；
Fig. 4 a are outlet passage outlet of the present invention ascent stage length adjustment schematic diagrames；
Fig. 4 b are outlet passage outlet of the present invention ascent stage Outlet Section width adjustment schematic diagrames；
Fig. 4 c are outlet passage outlet of the present invention ascent stage base Inclination maneuver schematic diagrames；
In figure：1 import round platform section, 2 curve transitions, 3 export under dividing pier in ascent stages, 4,5 facade upper sidelines, 6 facades
Sideline.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
1. a kind of horizontal pump installation outlet passage of the excellent prefix type of hydraulic performance, the outlet passage is used based on CFD's
Optimum Hydraulic Design research method is obtained, and proves that its hydraulic performance is excellent after tested, loss of flood peak during design discharge is less than
0.20m, succeeds application in big flow pumping plant；
As illustrated in figs. 1A and ib, the outlet passage includes import round platform section 1, the and of curve transition 2 set gradually
Export the ascent stage 3；The section configuration of curve transition 2 is faded to the rectangle of Outlet Section by the circle of admission section；In outlet
Rise and middle dividing pier 4 is provided with section 3；
Each physical dimension of outlet passage is used to water pump vane diameter D0On the basis of relative value represent；
As illustrated in figs. 1A and ib, the length L of the import round platform section 1Round platform section=0.704D0, admission section diameter
DRound platform section import=1.052D0, Outlet Section diameter DThe outlet of round platform section=1.166D0；
The length L of the curve transition 2Changeover portion=1.970D0, Outlet Section width BChangeover portion is exported=1.646D0, outlet is broken
Face height HChangeover portion is exported=1.333D0；The outlet passage elevational schematic view of cross section place containing curve transition 2 is provided, put down
Face schematic diagram and cross dimensions tables of data；As illustrated in figure 1 c, cross dimensions includes the coordinate (X of the facade upper sideline 5 of each section1i,
Y1i), the coordinate (X of facade lower sideline 62i, Y2i), profile height Hwi, section width BwiWith transitional radius Rwi；It is described go out current
As shown in Figure 2 a and 2 b, each section numbering i and data are listed in the facade and floor map of the cross section place of road curve transition 2
Table 1；
The length L of the outlet ascent stage 3Ascent stage=2.573D0, base angle of inclination beta=5 °, Outlet Section width BAscent stage exports=
2.273D0, Outlet Section height HAscent stage exports=1.582D0；The length L of the middle dividing pier 4Dividing pier=2.573D0, width BDividing pier=
0.8m, head arc radius RDividing pier head=0.4m, afterbody arc radius RDividing pier afterbody=0.4m.
2. a kind of application process of the horizontal pump installation outlet passage of the excellent prefix type of hydraulic performance, comprises the following steps：
(1) as illustrated in figs. 1A and ib, the outlet passage includes import round platform section 1, curve transition 2 and outlet rising
Section 3；The section configuration of curve transition 2 is faded to the rectangle of Outlet Section by the circle of admission section；Set in the outlet ascent stage 3
There is middle dividing pier 4；
(2) each physical dimension of the outlet passage is used to water pump vane diameter D0On the basis of relative value represent；
As illustrated in figs. 1A and ib, the length L of the import round platform section 1Round platform section=0.704D0, admission section diameter
DRound platform section import=1.052D0, Outlet Section diameter DThe outlet of round platform section=1.166D0；
The length L of the curve transition 2Changeover portion=1.970D0, Outlet Section width BChangeover portion is exported=1.646D0, outlet is broken
Face height HChangeover portion is exported=1.333D0；The outlet passage elevational schematic view of cross section place containing curve transition 2 is provided, put down
Face schematic diagram and cross dimensions tables of data；As illustrated in figure 1 c, cross dimensions includes the coordinate (X of the facade upper sideline 5 of each section1i,
Y1i), the coordinate (X of facade lower sideline 62i, Y2i), profile height Hwi, section width BwiWith transitional radius Rwi；It is described go out current
As shown in Figure 2 a and 2 b, each section numbering i and data are listed in the facade and floor map of the cross section place of road curve transition 2
Table 1；
The length L of the outlet ascent stage 3Ascent stage=2.573D0, base angle of inclination beta=5 °, Outlet Section width BAscent stage exports=
2.273D0, Outlet Section height HAscent stage exports=1.582D0；The length L of the middle dividing pier 4Dividing pier=2.573D0, width BDividing pier=
0.8m, head arc radius RDividing pier head=0.4m, afterbody arc radius RDividing pier afterbody=0.4m；
(3) the length L of the horizontal pump installation outlet passage import round platform section 1 of the prefix typeRound platform section=0.704D0, can basis
Being actually needed for pumping plant is shortened or lengthened, but LRound platform sectionKnots modification be not more than 0.1D0；
Shorten or lengthen LRound platform sectionMode as shown in figure 3, in figure, L 'Round platform sectionRepresent the length of the import round platform section 1 after shortening
Degree, L 'Circle′Platform sectionRepresent the length of the import round platform section 1 after lengthening；
(4) the horizontal pump installation outlet passage of the prefix type exports the length L of ascent stage 3Ascent stage=2.573D0, can basis
Basis shortening herein or lengthening the need for outlet passage superstructure is arranged, but LAscent stageKnots modification be not more than 1.5D0；LAscent stageChange
After change, the length of middle dividing pier 4 accordingly changes into LDividing pier=LAscent stage；
Shorten or lengthen LAscent stageMode as shown in fig. 4 a, in figure, L 'Ascent stageRepresent the length of the outlet ascent stage 3 after shortening
Degree, L 'On′Rise sectionRepresent the length of the outlet ascent stage 3 after lengthening；
(5) the horizontal pump installation outlet passage of the prefix type exports the Outlet Section width B of ascent stage 3Ascent stage exports=
2.273D0, reduce or increase on this basis the need for being arranged according to water pump assembly spacing, but BAscent stage exportsKnots modification it is little
In 0.15D0；
Reduce or increase BAscent stage exportsMode as shown in Figure 4 b, in figure, B 'Ascent stage exportsRepresent the outlet ascent stage 3 after reducing
Outlet Section width, B 'On′Rise section outletRepresent the Outlet Section width of the outlet ascent stage 3 after increasing；
(6) the horizontal pump installation outlet passage of the prefix type exports base angle of inclination beta=5 ° of ascent stage 3, can be according to water outlet
Runner is reduced or increased on this basis the need for being connected with pumping plant discharge bay, but β knots modification is not more than 5 °, and β should after changing
The height of each section of section keeps constant；
Reduce or increase β mode as illustrated in fig. 4 c, in figure, β ' expressions reduce after outlet the ascent stage 3 base inclination angle,
β " represents the base inclination angle of the outlet ascent stage 3 after increasing；
(7) relative value of the horizontal each size of pump installation outlet passage of the prefix type is multiplied by the water pump leaf that pumping plant is intended using
Wheel diameter D0The size that the pumping plant outlet passage is actually needed can be obtained, in units of m；
(8) according to the geometric parameter of the outlet passage after calculating and adjustment, before drafting is required in mapping software
Put the horizontal pump installation outlet passage line chart of type.
Embodiment
The present embodiment big flow pumping plant uses front vertical shaft type tubular device, water pump vane diameter D0=3.3m, it is desirable to
Using the outlet passage that present invention design hydraulic performance is excellent, needs are arranged according to pumping plant, determine that outlet passage exports the ascent stage
Length be that 8.2m, Outlet Section width are that 7.8m, base inclination angle are 8 °, the length of import round platform section is 2.2m.
The step of designing the big flow pumping plant front vertical shaft type tubular device outlet passage using the present invention is as follows：
1. as illustrated in figs. 1A and ib, the front vertical shaft type tubular device outlet passage includes import round platform section 1, song
Line changeover portion 2 and outlet ascent stage 3；The section configuration of curve transition 2 fades to Outlet Section by the circle of admission section
Rectangle；Export and middle dividing pier 4 is provided with the ascent stage 3；
Each physical dimension relative value of the horizontal pump installation outlet passage of prefix type designed using the present invention is multiplied by described big
The water pump vane diameter D of flow pumping plant0=3.3m, obtains the size of the pumping plant front vertical shaft type tubular device outlet passage：
(1) the length L of the import round platform section 1Round platform section=0.704D0=2.323m, admission section diameter DRound platform section import=
1.052D0=3.472m, Outlet Section diameter DThe outlet of round platform section=1.166D0=3.848m；
(2) the length L of the outlet passage curve transition 2Changeover portion=1.970D0=6.501m, Outlet Section width
BChangeover portion is exported=1.646D0=5.432m, Outlet Section height HChangeover portion is exported=1.333D0=4.399m；The outlet passage curve mistake
Crossing the cross dimensions of section 2 includes the coordinate (X of facade upper sideline 5 of each section1i, Y1i), the coordinate (X of facade lower sideline 62i,
Y2i), profile height Hwi, section width BwiWith transitional radius Rwi, each section numbering i and data are listed in table 2；
The present embodiment outlet passage curve transition cross dimensions tables of data of table 2
(3) outlet passage exports the length L of ascent stage 3Ascent stage=2.573D0=8.491m, base angle of inclination beta=5 °,
Outlet Section width BAscent stage exports=2.273D0=7.501m, Outlet Section height HAscent stage exports=1.582D0=5.221m；In described
The length L of dividing pier 4Dividing pier=2.573D0=8.491m, width BDividing pier=0.8m, head arc radius RDividing pier head=0.4m, afterbody circle
Arc radius RDividing pier afterbody=0.4m；
2. the length L of obtained import round platform section 1 is calculated in the 1st big step the (1) stepRound platform section=2.323m, needs to shorten
0.123m could meet the length L of the present embodiment big flow pumping plant outlet passage import round platform section 1Round platform section=2.2m requirement, contracting
Short mode is as shown in Figure 3；
3. the length L of obtained outlet ascent stage 3 is calculated in the 1st big step the (3) stepAscent stage=8.491m, needs to shorten
0.291m could meet the length L that the present embodiment big flow pumping plant outlet passage exports the ascent stage 3Ascent stage=8.2m requirement；In
The length of dividing pier 4 also needs correspondingly to shorten 0.291m；Their shortening mode is as shown in fig. 4 a；
4. the Outlet Section width B of obtained outlet ascent stage 3 is calculated in the 1st big step the (3) stepAscent stage exports=
7.501m, need to increase 0.299m could meet the present embodiment big flow pumping plant outlet passage outlet the ascent stage 3 Outlet Section it is wide
Spend BAscent stage exports=7.8m requirement, increases mode as shown in Figure 4 b；
5. base angle of inclination beta=5 ° for the outlet ascent stage 3 that the present invention is designed, need to increase 3 ° could meet the big stream of the present embodiment
The base inclination angle for measuring the pumping plant outlet passage outlet ascent stage 3 is 8 ° of requirement, increases mode as illustrated in fig. 4 c；
6. according to the geometric parameter of the outlet passage after calculating and adjustment, institute is drawn in AUTO CAD mapping softwares
The front vertical shaft type tubular device outlet passage line chart needed.
Claims (4)
1. a kind of horizontal pump installation outlet passage of prefix type, it is characterized in that,
The outlet passage includes import round platform section, curve transition and the outlet ascent stage set gradually；Curve transition
Section configuration is faded to the rectangle of Outlet Section by the circle of admission section；Export and middle dividing pier is provided with the ascent stage；
Each physical dimension of outlet passage is used to water pump vane diameter D0On the basis of relative value represent；
The length L of the import round platform sectionRound platform section=0.704D0, admission section diameter DRound platform section import=1.052D0, Outlet Section diameter
DThe outlet of round platform section=1.166D0；
The length L of the curve transitionChangeover portion=1.970D0, Outlet Section width BChangeover portion is exported=1.646D0, Outlet Section height
HChangeover portion is exported=1.333D0；
The length L of the outlet ascent stageAscent stage=2.573D0, base angle of inclination beta=5 °, Outlet Section width BAscent stage exports=
2.273D0, Outlet Section height HAscent stage exports=1.582D0；The length L of the middle dividing pierDividing pier=2.573D0, width BDividing pier=
0.8m, head arc radius RDividing pier head=0.4m, afterbody arc radius RDividing pier afterbody=0.4m.
2. the horizontal pump installation outlet passage of prefix type according to claim 1, it is characterized in that there is provided containing the curve transition
The outlet passage elevational schematic view, floor map and the cross dimensions tables of data of section cross section place；Cross dimensions includes each
The facade top line coordinates (X of section1i, Y1i), the following line coordinates (X of facade2i, Y2i), profile height Hwi, section width BwiAnd mistake
Cross radius of circle Rwi, each section numbering i and data are listed in table 1；
The outlet passage curve transition cross dimensions tables of data of table 1
3. a kind of application process of the horizontal pump installation outlet passage of prefix type, it is characterized in that, the application process includes following step
Suddenly：
(1) outlet passage includes import round platform section, curve transition and the outlet ascent stage set gradually；Curve transition
Section configuration the rectangle of Outlet Section is faded to by the circle of admission section；Export and middle dividing pier is provided with the ascent stage；
(2) each physical dimension of the outlet passage is used to water pump vane diameter D0On the basis of relative value represent；
The length L of the import round platform sectionRound platform section=0.704D0, admission section diameter DRound platform section import=1.052D0, Outlet Section diameter
DThe outlet of round platform section=1.166D0；
The length L of the curve transitionChangeover portion=1.970D0, Outlet Section width BChangeover portion is exported=1.646D0, Outlet Section height
HChangeover portion is exported=1.333D0；
The length L of the outlet ascent stageAscent stage=2.573D0, base angle of inclination beta=5 °, Outlet Section width BAscent stage exports=
2.273D0, Outlet Section height HAscent stage exports=1.582D0；The length L of the middle dividing pierDividing pier=2.573D0, width BDividing pier=
0.8m, head arc radius RDividing pier head=0.4m, afterbody arc radius RDividing pier afterbody=0.4m；
(3) the length L of the horizontal pump installation outlet passage import round platform section of the prefix typeRound platform section=0.704D0, according to the reality of pumping plant
Border needs to shorten or lengthened, but LRound platform sectionKnots modification be not more than 0.1D0；
(4) the horizontal pump installation outlet passage of the prefix type exports the length L of ascent stageAscent stage=2.573D0, according to outlet passage
Superstructure shortens or lengthened on this basis the need for arranging, but LAscent stageKnots modification be not more than 1.5D0；LAscent stageAfter change,
Middle dividing pier length makees corresponding change；
(5) the horizontal pump installation outlet passage of the prefix type exports the width B of ascent stage Outlet SectionAscent stage exports=2.273D0, root
Reduce or increase on this basis the need for being arranged according to water pump assembly spacing, but BAscent stage exportsKnots modification be not more than 0.15D0；
(6) the horizontal pump installation outlet passage of the prefix type exports base angle of inclination beta=5 ° of ascent stage, according to outlet passage and pump
Discharge bay of standing is reduced or increased on this basis the need for being connected, but β knots modification is not more than 5 °, this section of each section after β changes
Height keep it is constant；
(7) water pump vane for the relative value of the horizontal each size of pump installation outlet passage of the prefix type being multiplied by into pumping plant plan use is straight
Footpath D0The size that the pumping plant outlet passage is actually needed is produced, in units of m；
(8) according to the geometric parameter of the outlet passage after calculating and adjustment, required prefix type is drawn in mapping software
Horizontal pump installation outlet passage line chart.
4. the application process of the horizontal pump installation outlet passage of prefix type according to claim 3, it is characterized in that there is provided containing described
The outlet passage elevational schematic view, floor map and the cross dimensions tables of data of curve transition cross section place；Section chi
The very little facade top line coordinates (X including each section1i, Y1i), the following line coordinates (X of facade2i, Y2i), profile height Hwi, section it is wide
Spend BwiWith transitional radius Rwi, each section numbering i and data are listed in table 2；
The outlet passage curve transition cross dimensions tables of data of table 2
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| CN107956950B (en) * | 2017-11-29 | 2019-08-20 | 扬州大学 | A kind of outlet passage with flow Self-balancing |
| CN110593187B (en) * | 2019-09-11 | 2020-10-20 | 扬州大学 | Series water outlet flow passage of front-located shaft type tubular pump device and application method thereof |
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| CN203035569U (en) * | 2013-01-18 | 2013-07-03 | 淮安市水利勘测设计研究院有限公司 | Vertical shaft tubular pump with front-arranged guide vane body device |
| CN203067354U (en) * | 2013-01-24 | 2013-07-17 | 扬州大学 | Novel sidewise S-shaped shaft extension tubular pump device |
| CN204476864U (en) * | 2015-01-21 | 2015-07-15 | 扬州大学 | The serial oblique inlet passage of hydraulic performance excellence |
| CN104863866B (en) * | 2015-05-25 | 2016-04-27 | 扬州大学 | Horizontal axial-flow pump device and application process thereof on a kind of motor preposition |
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| CN205478549U (en) * | 2016-01-22 | 2016-08-17 | 扬州大学 | Prefix type horizontal pump device outlet flow channel that water conservancy performance is excellent |
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| JP2002257095A (en) * | 2001-03-06 | 2002-09-11 | Kubota Corp | Mixed or axial flow pump |
| CN203035569U (en) * | 2013-01-18 | 2013-07-03 | 淮安市水利勘测设计研究院有限公司 | Vertical shaft tubular pump with front-arranged guide vane body device |
| CN203067354U (en) * | 2013-01-24 | 2013-07-17 | 扬州大学 | Novel sidewise S-shaped shaft extension tubular pump device |
| CN204476864U (en) * | 2015-01-21 | 2015-07-15 | 扬州大学 | The serial oblique inlet passage of hydraulic performance excellence |
| CN104863866B (en) * | 2015-05-25 | 2016-04-27 | 扬州大学 | Horizontal axial-flow pump device and application process thereof on a kind of motor preposition |
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| CN105485053A (en) | 2016-04-13 |
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