CN111737837B - Parameterized three-dimensional modeling method for water inlet flow channel of inclined shaft extension pump - Google Patents
Parameterized three-dimensional modeling method for water inlet flow channel of inclined shaft extension pump Download PDFInfo
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- CN111737837B CN111737837B CN202010624520.5A CN202010624520A CN111737837B CN 111737837 B CN111737837 B CN 111737837B CN 202010624520 A CN202010624520 A CN 202010624520A CN 111737837 B CN111737837 B CN 111737837B
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- 238000013461 design Methods 0.000 claims abstract description 14
- 238000010586 diagram Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 5
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- 238000005457 optimization Methods 0.000 abstract description 5
- 238000011089 mechanical engineering Methods 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/28—Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
Abstract
A parameterized three-dimensional modeling method for an intake runner of an inclined shaft pump belongs to the technical field of hydraulic mechanical engineering, and a three-dimensional model diagram of the intake runner of the inclined shaft pump is obtained by determining parameter variables required by modeling, establishing a model and changing various parameters by using an expression. The method is scientific and reasonable, and the flow channel optimization process is programmed through the most critical flow channel parameters, so that the design efficiency and the design quality are greatly improved.
Description
Technical Field
The invention belongs to the technical field of hydraulic mechanical engineering, relates to a pump station flow channel three-dimensional modeling method, and particularly relates to an oblique shaft extension pump water inlet flow channel parameterized three-dimensional modeling method.
Background
The lift is generally lower, the design lift is between 2 and 4m, and the inclined axial flow unit is a better choice. However, the inclined flow path is restricted to leave necessary space for the motor and its heat dissipation duct, and the efficiency of the pump type device is reduced. The research flow channel optimization is generally to conduct optimization research on the flow channel hydraulic characteristics by a method verified by numerical simulation and experiments so as to improve the water inlet and outlet flow state and reduce the flow channel hydraulic loss. In order to reduce cost and save energy and reduce emissions, it is required that the pump station must have a high pump unit efficiency. Advanced design theory and method are used to raise the flow channel efficiency of low-lift pump station and the hydraulic performance of pump unit. The parametric three-dimensional modeling method is utilized to carry out simulation selection on the inclined shaft extension pump device, characteristic parameters are selected as factors of an orthogonal test, the main parameters include the diameter of a water pump impeller, the installation angle of the inclined water pump, the ratio of the width of a runner to the diameter of the impeller, the throat height of a water inlet runner to the ratio of D, the turning radius of the water inlet runner to the ratio of D, the change of an upper edge line, the change of a lower edge line, the change of the area of a section and the like, the runner parameters which are most critical in design can be found out, the association relation between the runner sizes is established, the parameters to be changed are input, and a corresponding three-dimensional model can be formed, so that the runner optimization process is programmed, and the design efficiency and the design quality are improved.
Disclosure of Invention
Aiming at the defects of low runner efficiency of a low-lift pump station, low hydraulic performance of a pump device and the like, the invention provides a parameterized three-dimensional modeling method for a water inlet runner of an inclined shaft extension pump.
The technical scheme of the invention is as follows: a parameterized three-dimensional modeling method for an inlet flow channel of an inclined shaft extension pump is characterized by comprising the following steps of: the three-dimensional modeling method comprises the following steps:
(1) Determining parameter variables required by modeling;
the inclined shaft extension pump water inlet flow passage is relatively complex in shape, generally comprises an inlet straight line section, a middle bending section and an outlet conical section, and is based on analysis and research on the influence of key parameters of the water inlet flow passage on performance, specific values are formulated in the recommended range of the key parameters so as to design the water inlet flow passage with better performance, and the main parameters of the water inlet flow passage are as follows:
(1-1) parameter variable in elevation direction
(1-1-1) diameter D of the water pump impeller;
(1-1-2) inclined water pump installation ANGLE;
(1-1-3) the ratio of the distance from the inlet of the water inlet flow channel to the center of the impeller to D, ljtoD;
(1-1-4) ratio of throat height to D of water inlet channel-HKTOD;
(1-1-5) ratio of turning radius of water inlet channel to D-RJK;
(1-1-6) upper edge involute changes, lower edge involute changes;
parameter variation in the (1-2) plane direction (1-2-1) ratio of flow channel width to impeller diameter-BTOD;
(1-2-2) determining the plane contour line according to the change rule of the cross-sectional area;
(1-3) a parameter variation in cross section;
(1-3-1) the inlet height of the runner linearly varies according to the center line;
(1-3-2) the radius change rule of the transition circle linearly changes according to the central line;
the ratio of the distance from the inlet of the water inlet flow channel to the center of the impeller to D in the step (1-1-3) ranges from 3.5 to 4.0.
The ratio of the throat height to D of the water inlet flow channel in the step (1-1-4) is 0.85-1.10.
The ratio of the turning radius of the water inlet flow channel to the D in the step (1-1-5) is 0.7-1.4.
The ratio BTOD of the width of the flow channel to the diameter of the impeller in the step (1-2-1) ranges from 2.0 to 2.8.
The beneficial effects of the invention are as follows: the parameterized three-dimensional modeling method for the water inlet flow channel of the inclined shaft extension pump provided by the invention is scientific and reasonable, and the flow channel efficiency and the hydraulic performance of the pump device of the low-lift pump station are improved by using the advanced design theory and method, and the inclined shaft extension pump device is subjected to simulation selection scheme by using the parameterized three-dimensional modeling method, so that the most critical flow channel parameters for design can be found out, the flow channel optimization process is programmed, and the design efficiency and the design quality are greatly improved.
Drawings
FIG. 1 is a flow channel elevation single line diagram of the present invention.
FIG. 2 is a flow channel planar single line diagram of the present invention.
FIG. 3 is a cross-sectional view of a flow channel of the present invention.
Fig. 4 shows parameters that can be varied in the present invention.
FIG. 5 is a three-dimensional view of a flow channel according to the present invention.
FIG. 6 is a parametric formulation of the present invention.
FIG. 7 is a parametric formulation of the present invention.
FIG. 8 is a parametric formulation of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-8, a parameterized three-dimensional modeling method for an inlet flow channel of an inclined shaft extension pump is as follows:
(1) Determining parameter variables required by modeling; the inclined shaft extension pump water inlet flow passage is relatively complex in shape, generally comprises an inlet straight line section, a middle bending section and an outlet conical section, and is based on analysis and research on the influence of key parameters of the water inlet flow passage on performance, specific values are formulated in the recommended range of the key parameters so as to design the water inlet flow passage with better performance, and the main parameters of the water inlet flow passage are as follows:
(1-1) parameter variable in elevation direction
(1-1-1) diameter of water pump impeller-D;
(1-1-2) inclined water pump installation ANGLE-ANGLE;
(1-1-3) the ratio of the distance from the inlet of the water inlet flow channel to the center of the impeller to D, ljtoD;
(1-1-4) ratio of throat height to D of water inlet channel-HKTOD;
(1-1-5) ratio of turning radius of water inlet channel to D-RJK;
(1-1-6) upper edge involute changes, lower edge involute changes;
parameter variation in the (1-2) plane direction (1-2-1) ratio of flow channel width to impeller diameter-BTOD;
(1-2-2) determining the plane contour line according to the change rule of the cross-sectional area;
(1-3) variation of parameters in section
(1-3-1) the inlet height of the runner linearly varies according to the center line;
(1-3-2) the radius change rule of the transition circle linearly changes according to the central line;
(2) Establishing a model in ug software, restraining and correlating the model size, determining that a tangent line of a certain point on a central line (shown in figure 1) of a flow channel is perpendicular to a flow channel section passing through the point, wherein the section shape is a rounded rectangle (shown in figure 3), each section size is determined by the height X, the width Z and the rounded radius of the rounded rectangle (specific constraint formulas are shown in figures 6, 7 and 8), and determining that the section area of each section is S=ZX+pi according to a designed plane contour line (shown in figure 2), namely, inputting each section area value to control the section area;
(3) In ug software, the expression is used to change each parameter (shown in fig. 4) to obtain a three-dimensional model diagram (shown in fig. 5) of the water inlet flow channel of the inclined shaft pump.
1-8, a parameterized three-dimensional modeling method for an inlet flow channel of an inclined shaft extension pump is shown in the drawing, wherein the ratio range of the distance from an inlet of the inlet flow channel to the center of an impeller in the step (1-1-3) to D is 3.5-4.0; in the step (1-1-4), the ratio of the throat height to D of the water inlet flow channel is 0.85-1.10; in the step (1-1-5), the ratio of the turning radius of the water inlet flow channel to the D is 0.7-1.4; in the step (1-2-1), the ratio BTOD of the width of the flow channel to the diameter of the impeller is in the range of 2.0-2.8.
Parameter description:
ANGLE-oblique water pump installation ANGLE;
BTOD-flow channel width to impeller diameter ratio;
d, diameter of the impeller of the water pump;
HBLADE-impeller center mounting elevation;
HJS-the elevation of the upper part of the inlet of the water inlet flow channel is determined according to the requirement of the submerged depth;
HKTOD-ratio of throat height to D of the water inlet channel;
l-the length of the inclined water inlet flow channel;
LJtoD, the ratio of the distance from the inlet of the water inlet flow channel to the center of the impeller (the length of the water inlet flow channel) to D;
RJK-the ratio of the turning radius of the inlet flow channel to D;
s1 to S18-the tangent to a point on the centerline is perpendicular to the cross-sectional area of the flow passage through that point.
Because of the parameterized three-dimensional modeling method with the flow channel, the water inlet flow channel is conveniently developed and optimized by changing the key parameter simulation scheme, and each parameter is input as shown in figure 4. The three-dimensional model of the water inlet flow channel can be obtained, and transfer is implemented through software and a prt file of the three-dimensional model.
Claims (5)
1. A parameterized three-dimensional modeling method for an inlet flow channel of an inclined shaft extension pump is characterized by comprising the following steps of: the three-dimensional modeling method comprises the following steps:
(1) Determining parameter variables required by modeling; the inclined shaft extension pump water inlet flow passage is relatively complex in shape, generally comprises an inlet straight line section, a middle bending section and an outlet conical section, and is based on analysis and research on the influence of key parameters of the water inlet flow passage on performance, specific values are formulated in the recommended range of the key parameters so as to design the water inlet flow passage with better performance, and the main parameters of the water inlet flow passage are as follows:
(1-1) parameter variation in the elevation direction;
(1-1-1) diameter of water pump impeller-D;
(1-1-2) inclined water pump installation ANGLE-ANGLE;
(1-1-3) the ratio of the distance from the inlet of the water inlet flow channel to the center of the impeller to D, ljtoD;
(1-1-4) ratio of throat height to D of water inlet channel-HKTOD;
(1-1-5) ratio of turning radius of water inlet channel to D-RJK;
(1-1-6) upper edge involute changes, lower edge involute changes;
parameter variation in the (1-2) plane direction (1-2-1) ratio of flow channel width to impeller diameter-BTOD;
(1-2-2) determining the plane contour line according to the change rule of the cross-sectional area;
(1-3) a parameter variation in cross section;
(1-3-1) the inlet height of the runner linearly varies according to the center line;
(1-3-2) the radius change rule of the transition circle linearly changes according to the central line;
(2) Establishing a model in ug software, restraining and correlating the model size, determining that a tangent line of a certain point on the central line of a flow channel is perpendicular to the section of the flow channel passing through the certain point, wherein the section is in a round rectangle, each section size is determined by the height X, the width Z and the round radius of the round rectangle, and the section area of each section is determined to be S=ZX+pi R according to the designed plane contour line 2 -4R 2 I.e. the cross-sectional area can be controlled by inputting the area value of each cross-sectional area;
(3) In ug software, an expression is applied, and each parameter is changed to obtain a three-dimensional model diagram of the water inlet flow passage of the inclined shaft extension pump.
2. The parameterized three-dimensional modeling method for the water inlet flow channel of the inclined shaft extension pump according to claim 1 is characterized by comprising the following steps: the ratio of the distance from the inlet of the water inlet flow channel to the center of the impeller to D in the step (1-1-3) ranges from 3.5 to 4.0.
3. The parameterized three-dimensional modeling method for the water inlet flow channel of the inclined shaft extension pump according to claim 1 is characterized by comprising the following steps: the ratio of the throat height to D of the water inlet flow channel in the step (1-1-4) is 0.85-1.10.
4. The parameterized three-dimensional modeling method for the water inlet flow channel of the inclined shaft extension pump according to claim 1 is characterized by comprising the following steps: the ratio of the turning radius of the water inlet flow channel to the D in the step (1-1-5) is 0.7-1.4.
5. The parameterized three-dimensional modeling method for the water inlet flow channel of the inclined shaft extension pump according to claim 1 is characterized by comprising the following steps: the ratio BTOD of the width of the flow channel to the diameter of the impeller in the step (1-2-1) ranges from 2.0 to 2.8.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595238A (en) * | 2015-01-21 | 2015-05-06 | 扬州大学 | Series of inclined water inlet flow passages with excellent hydraulic performance and application method thereof |
| CN105179303A (en) * | 2015-10-24 | 2015-12-23 | 扬州大学 | Axial flow pump impeller all-operating-condition design method |
| CN105574288A (en) * | 2016-01-12 | 2016-05-11 | 扬州大学 | Method for designing water inlet conduit three-dimensional body flow surface of high-performance large-flow pump station |
| CN105608287A (en) * | 2016-01-12 | 2016-05-25 | 扬州大学 | Design method for water outlet flow passage three-dimensional-form flow surface of high-performance and large-flow pump station |
| CN106886646A (en) * | 2017-02-17 | 2017-06-23 | 江苏大学镇江流体工程装备技术研究院 | A kind of method for designing of the oblique inlet passage of pumping plant |
| WO2017143694A1 (en) * | 2016-02-25 | 2017-08-31 | 江苏大学 | Optimization design method for spatial flow passage of low-pressure even spray nozzle |
| WO2018121686A1 (en) * | 2016-12-29 | 2018-07-05 | 天津市建筑设计院 | Parameterized design method for fan coil unit module based on bim |
-
2020
- 2020-07-02 CN CN202010624520.5A patent/CN111737837B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595238A (en) * | 2015-01-21 | 2015-05-06 | 扬州大学 | Series of inclined water inlet flow passages with excellent hydraulic performance and application method thereof |
| CN105179303A (en) * | 2015-10-24 | 2015-12-23 | 扬州大学 | Axial flow pump impeller all-operating-condition design method |
| CN105574288A (en) * | 2016-01-12 | 2016-05-11 | 扬州大学 | Method for designing water inlet conduit three-dimensional body flow surface of high-performance large-flow pump station |
| CN105608287A (en) * | 2016-01-12 | 2016-05-25 | 扬州大学 | Design method for water outlet flow passage three-dimensional-form flow surface of high-performance and large-flow pump station |
| WO2017143694A1 (en) * | 2016-02-25 | 2017-08-31 | 江苏大学 | Optimization design method for spatial flow passage of low-pressure even spray nozzle |
| WO2018121686A1 (en) * | 2016-12-29 | 2018-07-05 | 天津市建筑设计院 | Parameterized design method for fan coil unit module based on bim |
| CN106886646A (en) * | 2017-02-17 | 2017-06-23 | 江苏大学镇江流体工程装备技术研究院 | A kind of method for designing of the oblique inlet passage of pumping plant |
Non-Patent Citations (2)
| Title |
|---|
| 低扬程灌排泵装置进出水流道研究进展及展望;成立;刘超;周济人;汤方平;;灌溉排水学报;20080215(第01期);全文 * |
| 轴流泵装置出水流道内流脉动与流动噪声试验分析;杨帆;高慧;刘超;赵浩儒;汤方平;;农业机械学报;20180109(第03期);全文 * |
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