CN115163550B - Manufacturing method of large-sized vane pump vane based on additive manufacturing - Google Patents
Manufacturing method of large-sized vane pump vane based on additive manufacturing Download PDFInfo
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- CN115163550B CN115163550B CN202210828127.7A CN202210828127A CN115163550B CN 115163550 B CN115163550 B CN 115163550B CN 202210828127 A CN202210828127 A CN 202210828127A CN 115163550 B CN115163550 B CN 115163550B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 239000000654 additive Substances 0.000 title claims abstract description 21
- 230000000996 additive effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 3
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a manufacturing method of a large-sized vane pump vane based on additive manufacturing, which comprises the following specific steps: determining the number of components in each direction of the blade according to the blade structural parameters, and determining the size data of the dovetail structure of the working face according to the blade geometric parameters; determining size data of the back dovetail structure according to a wedge boosting principle; and determining the arrangement mode and the position of the dovetail structure according to the reliability principle. The invention solves the problem that the large-sized vane pump vane can not be processed and manufactured due to the size limitation in the additive manufacturing process.
Description
Technical Field
The invention belongs to the field of additive manufacturing, and particularly relates to a manufacturing method of a large-sized vane pump vane based on additive manufacturing.
Background
With the development of additive manufacturing technology, metal additive manufacturing technology is gradually being widely applied to various industries due to the advantages of simplicity (multiple processing procedures are avoided), high efficiency (compared with the traditional processing technology, the cycle is shorter), strong processability of complex structures (parts with multiple complex shapes can be processed and manufactured on a single device with high precision and high efficiency), and the like. Meanwhile, the vane pump is used as a low-lift pump, has the characteristics of simple structure, flexible installation, large overflow rate and the like, and is mainly applied to the fields of agricultural irrigation, cross-river basin water regulation, industrial circulating water and the like. Because the impeller blade of the vane pump is a special curved surface part, the manufacturing method has obvious defects, and particularly, the large vane pump is mainly suitable for low-lift and high-flow occasions, such as irrigation, drainage, dock drainage, water level adjustment of canal locks, or used as a large circulating water pump of a power plant, the diameter of a rotating wheel can reach approximately 5 meters, and the problems of complicated steps, overlong process period and the like of the traditional casting processing method are more remarkable. Meanwhile, additive manufacturing is limited in size of a manufacturing platform, so that parts exceeding the manufacturing size cannot be directly manufactured.
At present, no related patent and literature for manufacturing large-scale vane pump vanes by utilizing a metal additive manufacturing technology are searched at home. To this end, provided herein is a method of manufacturing a large vane pump vane based on additive manufacturing.
Disclosure of Invention
Aiming at the problems existing in the prior art of processing and manufacturing large-sized vane pump vanes by the traditional casting and processing technology and the common phenomenon that the additive manufacturing cannot directly manufacture and process parts exceeding the manufacturing size, the invention aims to provide a manufacturing method of the large-sized vane pump vanes based on the additive manufacturing.
In order to achieve the above purpose, the manufacturing method of the large-sized vane pump vane based on additive manufacturing provided by the invention adopts the following technical scheme:
determining the number of the components in the radial direction and the number of the components in the circumferential direction of the blade according to the structural parameters of the blade; determining size data of the dovetail teeth according to the number of the components and the geometric parameters of the blade; and carrying out additive manufacturing on the blade component parts according to the number and size data so as to realize connection.
A manufacturing method of a large-scale vane pump vane based on additive manufacturing comprises the following specific steps:
(1) The diameter D of the rim, the diameter D of the hub and the chord length l of the rim 1 And rim She Xianjiao beta 1 Carry-over formulaWhen->When N r =1; when->When N r The number of radial direction components of the blade can be obtained =2. Substituting the lift H, the rotation speed N and the flow Q into N t ＝2.796-0.009418(n/Q) 0.3 H, calculating to obtain the number of the components in the circumferential direction of the blade, and rounding up the calculation result according to the reliability principle to obtain the required number of the components in the circumferential direction of the blade; when N is t And when the diameter is more than or equal to 3, the middle part is not provided with radial teeth.
Recording the length of the tooth root of the radial dovetail tooth of the working surface as L r1 The tooth top length of the radial tooth is l r1 Radial tooth height h r . When N is r When=1, the radial direction does not need to be split; when N is r When=2, then the formula L r1 ＝0.2(l 1 cosβ 1 +l 2 cosβ 2 )/N t Obtaining radial root length from formula l r1 ＝0.3(l 1 cosβ 1 +l 2 cosβ 2 )/N t Obtaining the radial tooth top length according to the formula h r ＝0.2(D-d)/N r Radial tooth heights are obtained. Recording the length of the tooth root of the circumferential dovetail tooth of the working surface as L t1 The length of the circumferential tooth top is l t1 The circumferential tooth height is h t From formula L t1 ＝0.2(D-d)/N r Calculating to obtain the length of the circumference tooth root by the formula l t1 ＝0.3(D-d)/N r Calculating to obtain the length of the circumferential tooth top, and calculating according to the formula h t ＝0.25(D-d)/N r Calculating to obtain the circumferential tooth height.
(2) According to the wedge-shaped pressurizing mechanism, the tooth slot size is generally 2% -15% smaller than the tooth size, and 2% is taken here, so that the corresponding tooth slot size is calculated according to 98% of the corresponding tooth size. According to the working condition difference of different surfaces of the blade and the wedge-shaped supercharging principle, the size of the teeth on the back surface of the blade and the size of the tooth grooves are smaller than the corresponding size of the working surface. Recording the thickness delta of the blade 0 According to the numberThe quantitative relationship can be represented by the formula L Back surface ＝L Working surface -0.35δ 0 The corresponding sheet back size is calculated.
(3) According to the reliability principle, two circumferential teeth and tooth grooves thereof in the same radial direction are staggered, and similarly, two radial teeth and tooth grooves thereof in the same circumferential direction are staggered; and the adjacent two sides of the same component part cannot be all teeth or all tooth grooves.
The invention has the advantages that: the required vane pump vane component is manufactured by using the additive manufacturing technology, so that the problem that the large vane pump vane cannot be manufactured due to size limitation in the additive manufacturing process is solved.
Drawings
FIG. 1 is a flow chart of a method of manufacturing a large vane pump vane based on additive manufacturing;
FIG. 2.1 is a schematic view of a blade;
FIG. 2.2 blade split schematic;
FIG. 3 is a split view of a large vane pump vane;
fig. 4 is a schematic diagram of a component a in fig. 3.
In the figure, 1, radial teeth I; 2. circumferential teeth I; 3. circumferential teeth II; 4. circumferential teeth III; 5. circumferential teeth IV; 6. radial teeth II; a1, radial teeth are one tooth; a2, a tooth slot is formed by the circumferential teeth; d1, radial teeth are tooth grooves; d2, two circumferential teeth.
Detailed Description
The present invention will be further illustrated by the following examples, but the scope of the present invention is not limited thereto.
Examples:
a certain full-through-flow submersible pump, the flow Q of which is 4392m 3 The lift H is 9.35m, the rotation speed n is 98r/min, the hub diameter D is 2400mm, the rim diameter D is 4500mm, the number of blades Z is 4, and the rim thickness delta is equal to that of the hub 1 120mm hub thickness delta 2 270mm rim chord length l 1 2800mm hub chord length l 2 550mm rim She Xianjiao beta 1 24.32 deg., hub She Xianjiao beta 2 43.19 deg..
(1) Diameter D of rim and hubDiameter d, rim chord length l 1 And rim She Xianjiao beta 1 Carry-over formulaCalculate available->So N is r Taking 2, thereby obtaining the number N of the components in the radial direction of the blade r 2. Substituting the lift H, the rotation speed N and the flow Q into a formula N t ＝2.796-0.009418(n/Q) 0.3 H=2.782, the number of the circumferential component parts of the blade is obtained, and the number N of the circumferential component parts of the blade is obtained according to the reliability principle t 3, in which case the intermediate portion is not provided with radial teeth.
From formula L r1 ＝0.2(l 1 cosβ 1 +l 2 cosβ 2 )/N t Calculating the length L of the radial tooth-1 root of the working face r1 = 196.87mm, by formula l r1 ＝0.3(l 1 cosβ 1 +l 2 cosβ 2 )/N t Calculating to obtain the length l of the radial tooth 1 tooth top of the working face r1 = 295.27mm, otherwise represented by formula h r ＝0.2(D-d)/N t Calculating to obtain a radial tooth-1 tooth height h of the working surface r =140 mm; in addition, by formula L t1 ＝0.2(D-d)/N r Calculating to obtain the width L of the working face circumferential tooth-2 tooth root t1 =210 mm, by formula i t1 ＝0.3(D-d)/N r Calculating to obtain the length l of the working face circumferential tooth-2 tooth top t1 =315 mm, expressed by formula h t ＝0.25(D-d)/N r Calculating to obtain a working face circumferential tooth-2 tooth height h t ＝262.5mm。
(2) According to the wedge-shaped pressurizing mechanism, the corresponding tooth slot size is calculated according to 98% of the corresponding tooth size. According to the working condition difference of different surfaces of the blade and the wedge-shaped supercharging principle, the method can be represented by the formula L Back surface ＝L Working surface -0.35δ 0 The corresponding sheet back size is calculated.
(3) According to the reliability principle, two circumferential teeth and tooth grooves thereof in the same radial direction are staggered, and similarly, two radial teeth and tooth grooves thereof in the same circumferential direction are staggered; and the adjacent two sides of the same component part cannot be all teeth or all tooth grooves.
The examples are preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions and modifications made by one skilled in the art without departing from the spirit of the present invention are within the scope of the present invention.
Claims (2)
1. A manufacturing method of a large-sized vane pump vane based on additive manufacturing is characterized by comprising the following steps: comprises the following specific steps:
(1) Determining the number of components in each direction of the blade according to the structural parameters of the blade, and determining the size data of the dovetail structure of the working face according to the geometric parameters of the blade, wherein the specific steps are as follows:
(A) The diameter of the impeller rim of the vane pump is denoted as D, the diameter of the hub is denoted as D, and the chord length of the impeller rim is denoted as l 1 Rim She Xianjiao is denoted as beta 1 The chord length of the hub is denoted as l 2 Hub She Xianjiao is denoted as beta 2 The number of the components in the radial direction of the blade is calculated as N r The method comprises the steps of carrying out a first treatment on the surface of the The pump lift is recorded as H, the rotation speed is recorded as N, the flow is recorded as Q, and the number of the components in the circumferential direction of the vane is recorded as N t ；
(B) The diameter D of the rim, the diameter D of the hub and the chord length l of the rim 1 And rim She Xianjiao beta 1 Carry-over formulaWhen->When N r =1; when->When N r =2; substituting the lift H, the rotating speed N and the flow Q into a formula N t ＝2.796-0.009418(n/Q) 0.3 H, the calculation result is upwards fetched according to the reliability principleThe whole number is the number of the components in the circumferential direction of the blade, when N t When the diameter is more than or equal to 3, the middle part is not provided with radial teeth;
(C) Recording the length of the tooth root of the radial dovetail tooth of the working surface as L r1 The tooth top length of the radial tooth is l r1 Radial tooth height h r The method comprises the steps of carrying out a first treatment on the surface of the When N is r When=1, the radial direction does not need to be split; when N is r When=2, then the formula L r1 ＝
0.2(l 1 cosβ 1 +l 2 cosβ 2 )/N t Obtaining radial root length from formula l r1 ＝
0.3(l 1 cosβ 1 +l 2 cosβ 2 )/N t Obtaining the radial tooth top length according to the formula h r ＝0.2(D-d)/N r Obtaining radial tooth heights; recording the length of the tooth root of the circumferential dovetail tooth of the working surface as L t1 The length of the circumferential tooth top is l t1 The circumferential tooth height is h t From formula L t1 ＝0.2(D-d)/N r Calculating to obtain the length of the circumference tooth root by the formula l t1 ＝0.3(D-d)/N r Calculating to obtain the length of the circumferential tooth top, and calculating according to the formula h t ＝0.25(D-d)/N r Calculating to obtain the circumferential tooth height;
(2) The size data of the back dovetail structure is determined according to the wedge-shaped supercharging principle, and the specific steps are as follows:
(A) According to the wedge-shaped pressurizing mechanism, the tooth slot size is generally 2% -15% smaller than the tooth size, and 2% is taken here, so that the corresponding tooth slot size is calculated according to 98% of the corresponding tooth size;
(B) According to the working condition difference of different surfaces of the blade and the wedge-shaped supercharging principle, the size of the teeth on the back surface of the blade and the size of the tooth grooves are smaller than the corresponding size of the working surface; the wedge-shaped pressurizing inclined angle is recorded as alpha, and the thickness of the blade is recorded as delta 0 According to the number relation, can be represented by formula L Back surface ＝L Working surface -2δ 0 Calculating tan alpha to obtain the corresponding back surface size of the sheet; taking 10 DEG as a wedge-shaped pressurizing angle, and changing a related size formula of the back surface of the blade into L Back surface ＝L Working surface -0.35δ 0 ；
(3) And determining the arrangement mode and the position of the dovetail structure according to the reliability principle.
2. A method of manufacturing a large vane pump vane based on additive manufacturing as claimed in claim 1, wherein: the dovetail structure arrangement mode and the position are determined according to the reliability principle, and the specific steps are as follows:
according to the reliability principle, two circumferential teeth and tooth grooves thereof in the same radial direction are staggered, and similarly, two radial teeth and tooth grooves thereof in the same circumferential direction are staggered; and the adjacent two sides of the same component part cannot be all teeth or all tooth grooves.
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| CN115163550B true CN115163550B (en) | 2024-03-08 |
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