CN109711045A - A kind of centrifugal pump spiral casing fairing formative method - Google Patents
A kind of centrifugal pump spiral casing fairing formative method Download PDFInfo
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- CN109711045A CN109711045A CN201811600572.8A CN201811600572A CN109711045A CN 109711045 A CN109711045 A CN 109711045A CN 201811600572 A CN201811600572 A CN 201811600572A CN 109711045 A CN109711045 A CN 109711045A
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Abstract
The invention belongs to centrifugal pump Three-Dimensional Modeling Technology field, in particular to a kind of centrifugal pump spiral casing fairing formative method.This method is based on UG NX and carries out moulding, using etc. the tools such as parameter curves and BridgeCurve be used cooperatively, the problem of general spiral case formative method connects not fairing with curved surface by the artificial moulding distortion estimated and be easy to appear when handling spiral case cut water position can be efficiently solved.This method can be realized complete fairing transition between each curved surface in cut water position of centrifugal pump spiral casing generated, so that, without further processing, while reducing moulding cost, improving molding quality in the practical manufacturing process of centrifugal pump.The spiral case moulding completed using this method, modeling structure is clear, and surface blending is natural, beautiful, and this method can improve the precision and accuracy of centrifugal pump CFD simulation, finite element analysis, die numerical control processing.
Description
Technical field
The invention belongs to centrifugal pump Three-Dimensional Modeling Technology field, in particular to a kind of centrifugal pump spiral casing light based on UG NX
Along formative method.
Background technique
The pumping chamber of centrifugal pump is also known as spiral case, is the key that one of centrifugal pump flow passage components, can convert the kinetic energy of fluid
At pressure energy, release rate circular rector, there is larger impact to the hydraulic performance of centrifugal pump.In centrifugal pump during designing and manufacturing,
The three-dimensional modeling of spiral case is one of CFD simulation, finite element analysis, the committed step of die numerical control processing.Cut water is as in spiral case
The superiority and inferiority at flowing position the most complicated, three-dimensional model curved surface fairing degree is directly related to the precision and the pump housing of numerical simulation
The quality of processing and manufacturing.It is of great significance for the design level and manufacture level that promote centrifugal pump.
The three-dimensional modeling at cut water position is the key points and difficulties of spiral case moulding.Currently used formative method often through
The guide line that spline curve is generated as cut water face is added at spiral case cut water, the shape of spline curve is determined by range estimation completely,
The fairness in cut water face generated not can guarantee.Also the method having is by completing cut water position to cut water position rounded corner
Moulding can not reflect the true song at cut water position by simple rounded corner since cut water position is complicated space curved surface
Face shape.In the practical manufacturing process of centrifugal pump, often through means such as refine casting patterns the cut water position of mold is reached
To fairing.General 3-dimensional object formation is extremely difficult between each curved surface in cut water position complete fairing transition, leads to molding quality
It is lower.
Summary of the invention
The object of the present invention is to provide a kind of centrifugal pump spiral casing fairing formative method, this method is based on UG NX and carries out moulding,
Using etc. the tools such as parameter curves and BridgeCurve be used cooperatively, general spiral case formative method can be efficiently solved by artificial
The problem of range estimation and the moulding distortion being easy to appear when handling spiral case cut water position connect not fairing with curved surface.
To achieve the goals above, the present invention provides the following technical scheme that
A kind of centrifugal pump spiral casing fairing formative method, this method comprises the following steps:
A. the three-dimensional sketch for drawing centrifugal pump spiral casing spiral part and diffuser part respectively, includes the following steps:
A1. multiple sections of centrifugal pump spiral casing are chosen on the two-dimentional drawing of centrifugal pump spiral casing, the multiple section includes:
1,1 to the 8th section 8 of the first section of centrifugal pump spiral casing spiral part:
Choosing method are as follows: along centrifugal pump spiral casing spiral part, counterclockwise at interval of 45 ° of selections, one section, obtain
To 1 to the 8th section 8 of the first section of centrifugal pump spiral casing spiral part, 1 to the 8th section 8 of the first section be all located at by
In the plane in the center of circle of basic circle 13；Wherein, the height in 1 to the 8th section 8 of the first section is incremented by successively.
2, the 15th section of the 14th section 14 and centrifugal pump spiral casing diffuser part of centrifugal pump spiral casing spiral part
Face 15:
Selecting step are as follows: the junction of centrifugal pump spiral casing spiral part and diffuser part is located at the first section 1 and the 8th
Between section 8, connected by cut water circular arc 23.
The 14th section 14 is chosen in centrifugal pump spiral casing spiral part, is located across the upper extreme point and base of cut water circular arc 23
In the plane in the center of circle of circle 13.
Centrifugal pump spiral casing diffuser part choose the 15th section 15, for by cut water circular arc 23 lower extreme point from
Heart pump spiral case diffuser cross section.
3, the 9th section 9, the tenth section 10, the 11st section 11 and the outlet of centrifugal pump spiral casing diffuser part
12:
Selecting step are as follows: choose the 9th section 9 in centrifugal pump spiral casing diffuser part, be located at the 15th section 15 with from
Between the outlet 12 of heart pump spiral case diffuser part；9th section 9 is parallel with the 15th section 15, with the 15th section
15 distance is the diameter of cut water circular arc 23.
The tenth section 10 and the 11st section 11, the tenth section 10 and the 11st are chosen in centrifugal pump spiral casing diffuser part
Section 11 is parallel with the 15th section 15 respectively, is the 9th section 9 to the trisection point position of outlet 12 and is rounded.
A2. according to each sectional position determined in step a1, following two-dimentional sketch is drawn:
1, basic circle 13.
2, the first section 1, the second section 2, third section 3, the 4th section 4, the 5th section of centrifugal pump spiral casing spiral part
Face 5, the 6th section 6, the 7th section 7, the 8th section 8 and the 14th section 14.
3, the 9th section 9, the tenth section 10, the 11st section 11, outlet 12 of centrifugal pump spiral casing diffuser part
With the 15th section 15.Wherein,
The radius of angle circular arc 213 is half of angle circular arc 215 on the first of the first section 1 on the 14th of 14th section 14
The 50%~100% of diameter, and be rounded.
On the 15th of 15th section 15 on angle circular arc 218 and the 9th of the 9th section 9 the angle circular arc 210 radius phase
Together.
The radius of the 15th inferior horn circular arc 219 in the 15th section 15 is the half of the 9th inferior horn circular arc 222 in the 9th section 9
The 50%~100% of diameter.
A3. according to the two-dimentional sketch of the basic circle 13 and each section drawn in step a2, according to the basic circle 13 and
Position of each section in the two-dimentional drawing of the centrifugal pump spiral casing in step a1, respectively generate centrifugal pump spiral casing spiral part and
The three-dimensional sketch of diffuser part.
B. the spiral part of centrifugal pump spiral casing and the three-dimension curved surface of diffuser part are generated；
Respectively by the centrifugal pump spiral casing spiral part completed in step a and centrifugal pump spiral casing diffuser part
Each section connection, generates centrifugal pump spiral casing spiral section curved surface 31 and centrifugal pump spiral casing diffuser curved surface 32, and filling basic circle 13 generates
Basic circle plane 33.
C. parameter curves and the BridgeCurve such as drafting generates cut water curved surface 34 and linkage section curved surface 35；
No less than 20 articles and 14 to the 8th section 8 of the 14th section are marked off on the spiral section curved surface 31 of centrifugal pump spiral casing
The equal parameter curves of intersection, marked off on the diffuser curved surface 32 of centrifugal pump spiral casing no less than 20 articles with the 15th section 15 to
The equal parameter curves of 12nd section 12 intersection；Wherein, the equal parameter curves intersected with the 14th section 14 to the 8th section 8
Two-end-point is respectively on the 14th section 14 and on the 8th section 8；Intersect with 15 to the 12nd section 12 of the 15th section etc.
The two-end-point of parameter curve is respectively on the 15th section 15 and the 12nd section 12；Draw be no less than eight BridgeCurves to
Two articles of equal parameter curves for connecting 15 corresponding position of the 14th section 14 and the 15th section, draw and are no less than six BridgeCurves
Two articles of equal parameter curves to connect 15 corresponding position of the 8th section 8 and the 15th section.
According to above-mentioned BridgeCurve, cut water curved surface 34 and linkage section curved surface 35 are generated.
D. it sutures curved surface and supplements central curved surface 36；
By what is generated in the spiral section curved surface 31 generated in step b, diffuser curved surface 32, basic circle plane 33 and step c
Cut water curved surface 34 and linkage section curved surface 35 suture.
Supplement central curved surface 36.
E. mirror image sutures；
Along plane of symmetry X-Y, to diffuser curved surface 32, the basic circle of the spiral section curved surface 31 of centrifugal pump spiral casing, centrifugal pump spiral casing
Plane 33, cut water curved surface 34 and linkage section curved surface 35 carry out mirror image, suture after mirror image, the whole fairing for completing centrifugal pump spiral casing are made
Type step.
This method is based on UG NX software and is drawn.
In step a1, the 8th section 8 is utilized by centrifugal pump spiral casing spiral part and is intercepted by the plane in 13 center of circle of basic circle
Maximum height section.
Each section is connected using " passing through curvilinear grid " tool in UG NX software in step b, and using " filling is bent
Face " tool fills basic circle 13 and generates basic circle plane 33.
Step c is operated using " waiting parameter curves " tool in UG NX software.
The supplement center curved surface 36 of step d is operated using " side N curved surface " tool；Wherein, in " side N curved surface " tool
" containment surfaces " option selects spiral section curved surface 31, diffuser curved surface 32, basic circle plane 33, cut water curved surface 34 and linkage section curved surface
35；" continuity " option selects " G1 is tangent ".
Compared with prior art, the beneficial effects of the present invention are:
1) centrifugal pump spiral casing fairing formative method of the invention, can be realized the cut water position of centrifugal pump spiral casing generated
Complete fairing transition between each curved surface, so that, without further processing, being made in reduction in the practical manufacturing process of centrifugal pump
While type cost, molding quality is improved.
2) centrifugal pump spiral casing fairing formative method of the invention, the spiral case moulding completed using this method, modeling structure
Clearly, surface blending is natural, beautiful, and this method can improve the essence of centrifugal pump CFD simulation, finite element analysis, die numerical control processing
Degree and accuracy.
Detailed description of the invention
Fig. 1 is to indicate the centrifugal pump spiral casing of each section chosen position in centrifugal pump spiral casing fairing formative method of the invention
Two-dimentional drawing schematic diagram；
Fig. 2 is in centrifugal pump spiral casing fairing formative method of the invention, according to the snail shell coiling of spiral case two dimension drawing drafting
The two-dimentional sketch in the first partial section to the 8th section and the 14th section；
Fig. 3 is in centrifugal pump spiral casing fairing formative method of the invention, according to the centrifugal pump snail of spiral case two dimension drawing drafting
The two-dimentional sketch in the 15th section of shell diffuser part；
Fig. 4 be centrifugal pump spiral casing fairing formative method of the invention in, according to centrifugal pump spiral casing two dimension drawing draw from
The two-dimentional sketch in the 9th section of heart pump spiral case diffuser part；
Fig. 5 be centrifugal pump spiral casing fairing formative method of the invention in, according to centrifugal pump spiral casing two dimension drawing draw from
The two-dimentional sketch in the tenth section and the 11st section of heart pump spiral case diffuser part；
Fig. 6 is the three-dimensional sketch drafting schematic diagram of centrifugal pump spiral casing in centrifugal pump spiral casing fairing formative method of the invention；
Fig. 7 be centrifugal pump spiral casing fairing formative method of the invention in, generate centrifugal pump spiral casing spiral section curved surface and from
The schematic diagram of the diffuser curved surface of heart pump spiral case；
Fig. 8 is the equal parameter curves and bridge joint song of centrifugal pump spiral casing in centrifugal pump spiral casing fairing formative method of the invention
Line draws schematic diagram；
Fig. 9 is the side centrifugal pump spiral casing N surface-rendering schematic diagram in centrifugal pump spiral casing fairing formative method of the invention；
Figure 10 is in centrifugal pump spiral casing fairing formative method of the invention, and centrifugal pump spiral casing utilizes reflection point after completing
Analysis checks surface smoothing degree schematic diagram.
Appended drawing reference therein are as follows:
1 first section, 2 second section
The 4th section of 3 third section 4
The 6th section of 5 the 5th section 6
The 8th section of 7 the 7th section 8
The tenth section of 9 the 9th section 10
11 the 11st section, 12 outlet
The 14th section of 13 basic circle 14
15 the 15th section, 23 cut water circular arc
Angle circular arc on angle circular arc 213 the 14th on 210 the 9th
Angle circular arc on angle circular arc 218 the 15th on 215 first
The 9th inferior horn circular arc of 219 the 15th inferior horn circular arc 222
31 spiral section curved surface, 32 diffuser curved surface
33 basic circle plane, 34 cut water curved surface
The central curved surface of 35 linkage section curved surface 36
Specific embodiment
Invention is further explained with reference to the accompanying drawings and examples.
As shown in figure 1-9, the complete fairing formative method of centrifugal pump spiral casing of the present invention includes the following steps:
A. the three-dimensional sketch for drawing centrifugal pump spiral casing spiral part and diffuser part respectively, includes the following steps:
A1. multiple sections that centrifugal pump spiral casing is chosen on the two-dimentional drawing of centrifugal pump spiral casing, as shown in Figure 1, described more
A section includes:
1. 1 to the 8th section 8 of the first section of centrifugal pump spiral casing spiral part:
Choosing method are as follows: along centrifugal pump spiral casing spiral part, counterclockwise at interval of 45 ° of selections, one section, obtain
To 1 to the 8th section 8 of the first section of centrifugal pump spiral casing spiral part, 1 to the 8th section 8 of the first section be all located at by
In the plane in the center of circle of basic circle 13.Wherein, the height in 1 to the 8th section 8 of the first section is incremented by successively.Preferably, the 8th section 8
The maximum height section intercepted by the plane in 13 center of circle of basic circle is utilized by centrifugal pump spiral casing spiral part.
2. the 15th section of the 14th section 14 of centrifugal pump spiral casing spiral part and centrifugal pump spiral casing diffuser part
Face 15:
Selecting step are as follows: the junction of centrifugal pump spiral casing spiral part and diffuser part is located at the first section 1 and the 8th
Between section 8, connected by cut water circular arc 23.
The 14th section 14 is chosen in centrifugal pump spiral casing spiral part, is located across the upper extreme point and base of cut water circular arc 23
In the plane in the center of circle of circle 13.
Centrifugal pump spiral casing diffuser part choose the 15th section 15, for by cut water circular arc 23 lower extreme point from
Heart pump spiral case diffuser cross section.
3. the 9th section 9, the tenth section 10, the 11st section 11 and the outlet of centrifugal pump spiral casing diffuser part
12:
Selecting step are as follows: choose the 9th section 9 in centrifugal pump spiral casing diffuser part, be located at the 15th section 15 with from
Between the outlet 12 of heart pump spiral case diffuser part.9th section 9 is parallel with the 15th section 15, with the 15th section
15 distance is the diameter of cut water circular arc 23.
The tenth section 10 and the 11st section 11, the tenth section 10 and the 11st are chosen in centrifugal pump spiral casing diffuser part
Section 11 is parallel with the 15th section 15 respectively, is the 9th section 9 to the trisection point position of outlet 12 and is rounded.
A2. as shown in Figure 2-5, according to each sectional position determined in step a1, following two are drawn in UG NX software
Tie up sketch:
1. basic circle 13；
2. the first section 1 of centrifugal pump spiral casing spiral part, the second section 2, third section 3, the 4th section 4, the 5th section
Face 5, the 6th section 6, the 7th section 7, the 8th section 8 and the 14th section 14, as shown in Figure 2；
3. the 9th section 9, the tenth section 10, the 11st section 11, outlet 12 of centrifugal pump spiral casing diffuser part
With the 15th section 15, as shown in Figures 3 to 5；Wherein,
The radius of angle circular arc 213 is half of angle circular arc 215 on the first of the first section 1 on the 14th of 14th section 14
The 50%~100% of diameter, and be rounded；
On the 15th of 15th section 15 on angle circular arc 218 and the 9th of the 9th section 9 the angle circular arc 210 radius phase
Together；
The radius of the 15th inferior horn circular arc 219 in the 15th section 15 is the half of the 9th inferior horn circular arc 222 in the 9th section 9
The 50%~100% of diameter.
A3. according to the two-dimentional sketch of the basic circle 13 and each section drawn in step a2, according to the basic circle 13 and
Position of each section in the two-dimentional drawing of the centrifugal pump spiral casing in step a1, respectively generate centrifugal pump spiral casing spiral part and
The three-dimensional sketch of diffuser part, as shown in Figure 6.
B. the spiral part of centrifugal pump spiral casing and the three-dimension curved surface of diffuser part are generated；
As shown in fig. 7, using " passing through curvilinear grid " tool in UG NX software, it respectively will be rendered complete in step a
At centrifugal pump spiral casing spiral part connected with each section of centrifugal pump spiral casing diffuser part, generate the spiral of centrifugal pump spiral casing
The diffuser curved surface 32 of section curved surface 31 and centrifugal pump spiral casing utilizes " filling curved surface " tool filling basic circle 13 to generate basic circle plane
33。
C. parameter curves and the BridgeCurve such as drafting generates cut water curved surface 34 and linkage section curved surface 35；
As shown in figure 8, using " waiting parameter curves " tool in UG NX software, in the spiral section curved surface of centrifugal pump spiral casing
The no less than 20 articles equal parameter curves intersected with the 14th section 14 to the 8th section 8 are marked off on 31, in centrifugal pump spiral casing
The no less than 20 articles equal parameter curves intersected with the 15th section 15 to the 12nd section 12 are marked off on diffuser curved surface 32.Its
In, the two-end-point of the equal parameter curves intersected with the 14th section 14 to the 8th section 8 is respectively on the 14th section 14 and
On eight sections 8；The two-end-point of the equal parameter curves intersected with the 15th section 15 to the 12nd section 12 is respectively at the 15th section
On face 15 and the 12nd section 12.
It draws and is no less than eight articles of BridgeCurves to connect the two of the 14th section 14 and 15 corresponding position of the 15th section
The parameter curves such as item are drawn and are no less than six articles of BridgeCurves to connect the 8th section 8 and 15 corresponding position of the 15th section
Two equal parameter curves.Cut water is generated according to above-mentioned BridgeCurve using " passing through curvilinear grid " tool in UG NX software
Curved surface 34 and linkage section curved surface 35.
D. it sutures curved surface and supplements central curved surface 36；
As shown in figure 9, by the spiral section curved surface 31 generated in step b, diffuser curved surface 32, basic circle plane 33 and step
Cut water curved surface 34 and linkage section curved surface 35 suture generated in c.
Using " side N curved surface " tool, central curved surface 36 is supplemented.Wherein, " containment surfaces " option in " side N curved surface " tool,
Select spiral section curved surface 31, diffuser curved surface 32, basic circle plane 33, cut water curved surface 34 and linkage section curved surface 35；" continuity " choosing
, it selects " G1 (tangent) ".
E. mirror image sutures；
Along plane of symmetry X-Y, to diffuser curved surface 32, the basic circle of the spiral section curved surface 31 of centrifugal pump spiral casing, centrifugal pump spiral casing
Plane 33, cut water curved surface 34 and linkage section curved surface 35 carry out mirror image, suture after mirror image, complete whole moulding step of centrifugal pump spiral casing
Suddenly.
Embodiment
Moulding is carried out according to the complete fairing formative method of above-mentioned centrifugal pump spiral casing:
A. the three-dimensional sketch of centrifugal pump spiral casing spiral part and diffuser part is drawn respectively.
Wherein, the radius of cut water circular arc 23 is 3mm.The radius of angle circular arc 213 is on the 14th of 14th section 14
13mm；The radius of angle circular arc 215 is 15mm on the first of first section 1.On the 15th of 15th section 15 angle circular arc 218 with
The radius of angle circular arc 210 is 10mm on the 9th of 9th section 9；15th inferior horn circular arc, 219 radius in the 15th section 15
For 21.5mm, the radius of the 9th inferior horn circular arc 222 in the 9th section 9 is 22mm.
B. the spiral part of centrifugal pump spiral casing and the three-dimension curved surface of diffuser part are generated.
C. parameter curves and the BridgeCurve such as drafting generates cut water curved surface 34 and linkage section curved surface 35.
Wherein, 8 articles and the 14th 8 phase of section 14 to the 8th section are marked off on the spiral section curved surface 31 of centrifugal pump spiral casing
The equal parameter curves of friendship, mark off 50 articles and 15 to the 12nd sections of the 15th section on the diffuser curved surface 32 of centrifugal pump spiral casing
The equal parameter curves that face 12 is intersected.Wherein, the two-end-point point of the equal parameter curves intersected with the 14th section 14 to the 8th section 8
Not on the 14th section 14 and on the 8th section 8；The equal parameter curves intersected with the 15th section 15 to the 12nd section 12
Two-end-point respectively on the 15th section 15 and the 12nd section 12.
Draw the parameters such as two article of 8 articles of BridgeCurves to connect the 14th section 14 and 15 corresponding position of the 15th section
Curve draws 7 articles of BridgeCurves to connect two articles of 15 corresponding position of the 8th section 8 and the 15th section and waits parameter curves；
D. it sutures curved surface and supplements central curved surface 36.
E. mirror image sutures.
By above-mentioned steps, the spiral case of complete fairing is obtained.As shown in Figure 10, surface smoothing is checked using reflective analysis
Degree, the complete fairing of the curved surface.
Claims (6)
1. a kind of centrifugal pump spiral casing fairing formative method, it is characterised in that: this method comprises the following steps:
A. the three-dimensional sketch for drawing centrifugal pump spiral casing spiral part and diffuser part respectively, includes the following steps:
A1. multiple sections of centrifugal pump spiral casing are chosen on the two-dimentional drawing of centrifugal pump spiral casing, the multiple section includes:
1, the first section (1) of centrifugal pump spiral casing spiral part to the 8th section (8):
Choosing method are as follows: along centrifugal pump spiral casing spiral part, counterclockwise at interval of 45 ° of selections, one section, obtain from
The first section (1) of heart pump snail shell coiling part to the 8th section (8), first section (1) to the 8th section (8) are all located at
In plane by the center of circle of basic circle (13)；Wherein, the height in the first section (1) to the 8th section (8) is incremented by successively；
2, the 14th section (14) of centrifugal pump spiral casing spiral part and the 15th section of centrifugal pump spiral casing diffuser part
(15):
Selecting step are as follows: the junction of centrifugal pump spiral casing spiral part and diffuser part is located at the first section (1) and the 8th section
Between face (8), connected by cut water circular arc (23)；
The 14th section (14) is chosen in centrifugal pump spiral casing spiral part, is located across the upper extreme point and base of cut water circular arc (23)
In the plane in the center of circle of circle (13)；
Centrifugal pump spiral casing diffuser part choose the 15th section (15), for by cut water circular arc (23) lower extreme point from
Heart pump spiral case diffuser cross section；
3, the 9th section (9), the tenth section (10), the 11st section (11) and the outlet of centrifugal pump spiral casing diffuser part
(12):
Selecting step are as follows: centrifugal pump spiral casing diffuser part choose the 9th section (9), be located at the 15th section (15) with from
Between the outlet (12) of heart pump spiral case diffuser part；9th section (9) is parallel with the 15th section (15), with the tenth
The distance in five sections (15) is the diameter of cut water circular arc (23)；
The tenth section (10) and the 11st section (11), the tenth section (10) and the tenth are chosen in centrifugal pump spiral casing diffuser part
One section (11) is parallel with the 15th section (15) respectively, and the trisection point position of outlet (12) is arrived for the 9th section (9)
And it is rounded；
A2. according to each sectional position determined in step a1, following two-dimentional sketch is drawn:
1, basic circle (13)；
2, the first section (1), the second section (2), third section (3), the 4th section (4) of centrifugal pump spiral casing spiral part,
Five sections (5), the 6th section (6), the 7th section (7), the 8th section (8) and the 14th section (14)；
3, the 9th section (9), the tenth section (10), the 11st section (11), outlet of centrifugal pump spiral casing diffuser part
(12) and the 15th section (15)；Wherein,
The radius of angle circular arc (213) is angle circular arc (215) on the first of the first section (1) on the 14th of 14th section (14)
Radius 50%~100%, and be rounded；
On the 15th of 15th section (15) on the 9th of angle circular arc (218) and the 9th section (9) angle circular arc (210) radius
It is identical；
The radius of the 15th inferior horn circular arc (219) in the 15th section (15) is the 9th inferior horn circular arc (222) in the 9th section (9)
Radius 50%~100%；
A3. according to the two-dimentional sketch of the basic circle (13) and each section drawn in step a2, according to the basic circle (13) and
Position of each section in the two-dimentional drawing of the centrifugal pump spiral casing in step a1, respectively generate centrifugal pump spiral casing spiral part and
The three-dimensional sketch of diffuser part；
B. the spiral part of centrifugal pump spiral casing and the three-dimension curved surface of diffuser part are generated；
Respectively by each section of the centrifugal pump spiral casing spiral part completed in step a and centrifugal pump spiral casing diffuser part
Face connection, generates centrifugal pump spiral casing spiral section curved surface (31) and centrifugal pump spiral casing diffuser curved surface (32), and filling basic circle (13) is raw
At basic circle plane (33)；
C. parameter curves and the BridgeCurve such as drafting generates cut water curved surface (34) and linkage section curved surface (35)；
No less than 20 articles and the 14th section (14) to the 8th section are marked off on the spiral section curved surface (31) of centrifugal pump spiral casing
(8) the equal parameter curves of intersection, mark off no less than 20 articles and the 15th section on the diffuser curved surface (32) of centrifugal pump spiral casing
The equal parameter curves that face (15) to the 12nd section (12) is intersected；Wherein, intersect with the 14th section (14) to the 8th section (8)
Equal parameter curves two-end-point respectively on the 14th section (14) and on the 8th section (8)；Extremely with the 15th section (15)
The two-end-point of the equal parameter curves of 12nd section (12) intersection is respectively on the 15th section (15) and the 12nd section (12)；
It draws and is no less than eight articles of BridgeCurves to connect two articles etc. of the 14th section (14) and the 15th section (15) corresponding position
Parameter curve is drawn and is no less than six articles of BridgeCurves to connect the 8th section (8) and the 15th section (15) corresponding position
Two equal parameter curves；
According to above-mentioned BridgeCurve, cut water curved surface (34) and linkage section curved surface (35) are generated；
D. it sutures curved surface and supplements central curved surface (36)；
It will be generated in the spiral section curved surface (31) generated in step b, diffuser curved surface (32), basic circle plane (33) and step c
Cut water curved surface (34) and linkage section curved surface (35) suture；
Supplement central curved surface (36)；
E. mirror image sutures；
Along plane of symmetry X-Y, to diffuser curved surface (32), the basic circle of the spiral section curved surface (31) of centrifugal pump spiral casing, centrifugal pump spiral casing
Plane (33), cut water curved surface (34) and linkage section curved surface (35) carry out mirror image, suture after mirror image, complete the whole of centrifugal pump spiral casing
Fairing step of overall modelling.
2. centrifugal pump spiral casing fairing formative method according to claim 1, it is characterised in that: it is soft that this method is based on UG NX
Part is drawn.
3. centrifugal pump spiral casing fairing formative method according to claim 2, it is characterised in that: in step a1, the 8th section
(8) the maximum height section intercepted by the plane in basic circle (13) center of circle is utilized by centrifugal pump spiral casing spiral part.
4. centrifugal pump spiral casing fairing formative method according to claim 2, it is characterised in that: soft using UG NX in step b
" passing through curvilinear grid " tool in part connects each section, and generates basic circle using " filling curved surface " tool filling basic circle (13)
Plane (33).
5. centrifugal pump spiral casing fairing formative method according to claim 2, it is characterised in that: step c uses UG NX software
In " waiting parameter curves " tool operated.
6. the complete fairing formative method of centrifugal pump spiral casing according to claim 2, it is characterised in that:
The supplement center curved surface (36) of step d is operated using " side N curved surface " tool；Wherein, in " side N curved surface " tool
" containment surfaces " option selects spiral section curved surface (31), diffuser curved surface (32), basic circle plane (33), cut water curved surface (34) and connects
Connect a section curved surface (35)；" continuity " option selects " G1 is tangent ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811600572.8A CN109711045B (en) | 2018-12-26 | 2018-12-26 | Smooth modeling method for volute of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811600572.8A CN109711045B (en) | 2018-12-26 | 2018-12-26 | Smooth modeling method for volute of centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109711045A true CN109711045A (en) | 2019-05-03 |
| CN109711045B CN109711045B (en) | 2020-06-26 |
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| CN111843389A (en) * | 2020-07-24 | 2020-10-30 | 河南航天液压气动技术有限公司 | Centrifugal pump volute machining method |
| CN112524092A (en) * | 2020-11-27 | 2021-03-19 | 霍宏宇 | Variable-base-circle spiral pumping chamber |
| CN114483595A (en) * | 2021-12-24 | 2022-05-13 | 江西耐普矿机股份有限公司 | Hydraulic design method of quasi-annular pumping chamber for slurry pump and pumping chamber of slurry pump |
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