CN111069868A - Machining method of radial guide vane for pump - Google Patents
Machining method of radial guide vane for pump Download PDFInfo
- Publication number
- CN111069868A CN111069868A CN201911309079.5A CN201911309079A CN111069868A CN 111069868 A CN111069868 A CN 111069868A CN 201911309079 A CN201911309079 A CN 201911309079A CN 111069868 A CN111069868 A CN 111069868A
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- China
- Prior art keywords
- guide vane
- cover plate
- upper cover
- radial
- welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/04—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
Abstract
The invention discloses a method for processing a radial guide vane for a pump, which divides the three-dimensional modeling of the radial guide vane into a guide vane upper cover plate model and a guide vane lower cover plate model; respectively roughly machining a guide vane upper cover plate and a guide vane lower cover plate according to the guide vane upper cover plate model and the guide vane lower cover plate model; and milling radial blades on the guide vane lower cover plate, welding the radial blades on the inner surface of the guide vane upper cover plate, and completing the fixed connection between the guide vane upper cover plate and the guide vane lower cover plate so as to complete the processing of the radial guide vanes. According to the invention, the guide vane lower cover plate and the guide vane upper cover plate are combined into the integral radial guide vane after being processed and welded, so that the processing efficiency is effectively improved, and the problems of deviation of hydraulic dimension, difficulty in control of precision, low surface smoothness and the like in the manufacturing process of the existing manufacturing method can be solved.
Description
Technical Field
The invention relates to a method for processing a guide vane without twisting a blade, in particular to a method for processing a radial guide vane for a pump.
Background
The guide vane part of a pump product is a main flow passage part for converting the energy of medium liquid, so the requirement on the finish grade of the guide vane is high, a casting processing method is generally adopted in the traditional guide vane processing, and the guide vane processed by the processing method needs post-grinding treatment to meet the requirement on the performance of the guide vane, so the problems of deviation of hydraulic dimension, difficult control of precision, low surface finish and the like easily occur by the traditional guide vane processing method.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for processing a radial guide vane for a pump.
The purpose of the invention is realized by the following technical scheme:
a machining method for radial guide vanes for pumps comprises the following steps:
splitting the three-dimensional modeling of the radial guide vane into a guide vane upper cover plate model and a guide vane lower cover plate model;
respectively roughly machining a guide vane upper cover plate and a guide vane lower cover plate according to the guide vane upper cover plate model and the guide vane lower cover plate model;
and milling radial blades on the guide vane lower cover plate, and welding the radial blades on the inner surface of the guide vane upper cover plate to complete the fixed connection between the guide vane upper cover plate and the guide vane lower cover plate, so as to complete the processing of the radial guide vanes.
Further, when welding the radial blade to the inner surface of the guide vane upper cover plate, it includes:
milling a welding groove at one end of each radial blade close to the guide vane upper cover plate;
milling a groove body corresponding to the radial blade on the inner surface of the guide vane upper cover plate;
and welding the radial blade to the inner surface of the guide vane upper cover plate along the groove body.
Furthermore, welding grooves are milled on two sides of each radial blade respectively, and the slope surfaces of the welding grooves are 50-60 degrees respectively.
Further, along the cell body will radial blade welds when on the internal surface of stator upper cover plate, follow two after the runner exit between the radial blade stretches into the welding rod, will radial stator welds through its welding groove to on the cell body on the internal surface of stator upper cover plate, and when the welding, adopt argon gas and helium as welding arc shielding gas.
Further, will along the cell body radial blade welds when on the internal surface of stator upper cover plate, each radial blade all through symmetrical spot welding welded fastening to on the internal surface of stator upper cover plate, wherein, welding groove on the radial blade with the welding seam that the cell body on the stator upper cover plate is constituteed is two grooves of symmetrical arrangement.
Further, before the radial blades are welded to the inner surface of the guide vane upper cover plate, a fixing table is respectively milled at the combination position of the guide vane upper cover plate and the guide vane lower cover plate, so that the guide vane upper cover plate and the guide vane lower cover plate are fixed and positioned through the fixing table to ensure the coaxiality of the guide vane upper cover plate and the guide vane lower cover plate.
Further, accomplish under stator upper cover plate and the stator welding back between the apron, to after the combination stator upper cover plate and stator lower cover plate carry out thermal treatment, eliminate the remaining internal stress of stator upper cover plate and stator lower cover plate.
Further, after the welding between the guide vane upper cover plate and the guide vane lower cover plate is completed, the radial guide vane is subjected to turning finish machining, and a bench worker grinds a round angle and a round edge and performs deburring treatment.
The invention provides a processing method of a radial guide vane for a pump, which is characterized in that three-dimensional modeling of the radial guide vane is divided into a guide vane upper cover plate model and a guide vane lower cover plate model; respectively roughly machining a guide vane upper cover plate and a guide vane lower cover plate according to the guide vane upper cover plate model and the guide vane lower cover plate model; and milling radial blades on the guide vane lower cover plate, welding the radial blades on the inner surface of the guide vane upper cover plate, and completing the fixed connection between the guide vane upper cover plate and the guide vane lower cover plate so as to complete the processing of the radial guide vanes. According to the invention, the guide vane lower cover plate and the guide vane upper cover plate are combined into the integral radial guide vane after being processed and welded, so that the processing efficiency is effectively improved, and the problems of deviation of hydraulic dimension, difficulty in control of precision, low surface smoothness and the like in the manufacturing process of the existing manufacturing method can be solved.
Drawings
FIG. 1 is a schematic flow chart of a method of machining a radial vane for a pump in accordance with an exemplary embodiment of the present invention;
FIG. 2 is a schematic flow chart of another method of manufacturing a radial vane for a pump in accordance with an exemplary embodiment of the present invention;
FIG. 3 is a partial schematic view of a radial vane of an exemplary embodiment of the present invention;
FIG. 4 is an axial cross-sectional view of a vane upper cover plate of a radial vane of an exemplary embodiment of the present invention;
FIG. 5 is an axial cross-sectional view of a vane lower cover plate of a radial vane of an exemplary embodiment of the present invention;
FIG. 6 is a partial schematic view of a vane blade of an exemplary embodiment of the present invention;
FIG. 7 is a schematic view of the slotting position of the vane upper cover plate of the radial vane of an exemplary embodiment of the present invention.
In the figure: 1. guide vane upper cover plate, 2, guide vane lower cover plate, 3, radial blade, 4, runner, 5, cell body, 6, fixed station.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, 3, 4, and 5, a method for machining a radial vane for a pump includes:
s100, splitting three-dimensional modeling of the radial guide vane into a guide vane upper cover plate model and a guide vane lower cover plate model;
s200, respectively roughly machining a guide vane upper cover plate 1 and a guide vane lower cover plate 2 according to the guide vane upper cover plate model and the guide vane lower cover plate model;
s300, milling radial blades 3 on the guide vane lower cover 2, welding the radial blades 3 on the inner surface of the guide vane upper cover plate 1, and completing the fixed connection between the guide vane upper cover plate 1 and the guide vane lower cover plate 2 so as to complete the processing of the radial guide vanes.
In the method for processing the radial guide vane for the pump in the embodiment, the guide vane lower cover plate 2 and the radial blade 3 arranged on the guide vane lower cover plate 2 can be integrally milled through a numerical control horizontal milling machine; and then the guide vane upper cover plate 1 and the guide vane lower cover plate 2 (including radial vanes) are welded into a whole to finish the processing of the radial guide vanes 3, thereby greatly improving the precision of the positions of the vanes and the smoothness of the surface, ensuring that the medium liquid flowing out of the impeller is axisymmetric, reducing the hydraulic loss and improving the efficiency of pump products assembled with the radial guide vanes.
As a preferred embodiment, with reference to fig. 2 and 7, when welding the radial blade 3 to the inner surface of the upper cover plate 1 of the guide vane, it comprises:
s301, milling a welding groove at one end of each radial blade 3 close to the guide vane upper cover plate 1;
s302, milling a groove body 5 corresponding to the radial blade 3 on the inner surface of the guide vane upper cover plate 1;
and S303, welding the radial blade to the inner surface of the guide vane upper cover plate 1 along the groove body 5.
In a preferred embodiment, when the radial blades are welded to the inner surface of the guide vane upper cover plate 1 along the groove body 5, after a welding rod is extended from the outlet of the flow channel 4 between the two radial blades, the radial blades 3 are welded to the groove body 5 on the inner surface of the guide vane upper cover plate 1 through the welding grooves, and argon and helium are used as welding arc shielding gas during welding. By adopting argon and helium as the protective gas of the welding arc, the residence time of the welding arc is reduced, and the welding deformation is greatly controlled.
As a preferred embodiment, referring to fig. 6, both sides of each radial blade 3 are milled with welding grooves, and the slope of the welding groove is 50 ° to 60 °.
As a preferred embodiment, when the radial blades 3 are welded to the inner surface of the guide vane upper cover plate 1 along the groove body 5, each radial blade 3 is welded and fixed to the inner surface of the guide vane upper cover plate 1 by symmetrical spot welding, wherein the welding line formed by the welding groove on the radial blade 3 and the groove body 5 on the guide vane upper cover plate 1 is two grooves which are symmetrically arranged. The symmetrical welding mode provided by the embodiment can reduce welding stress, so that the stress is reasonably distributed, and the precision of the guide vane blade is ensured.
As a preferred embodiment, before the radial blades 3 are welded to the inner surface of the guide vane upper cover plate 1, fixing tables are milled at the joint of the guide vane upper cover plate 1 and the guide vane lower cover plate 2, so that the guide vane upper cover plate 1 and the guide vane lower cover plate 2 are positioned and fixed through the fixing tables 6, and the coaxiality of the guide vane upper cover plate 1 and the guide vane lower cover plate 2 is ensured.
As a preferred embodiment, after the welding between the guide vane upper cover plate 1 and the guide vane lower cover plate 2 is completed, the combined guide vane upper cover plate 1 and the guide vane lower cover plate 2 are subjected to heat treatment to eliminate the residual internal stress of the guide vane upper cover plate 1 and the guide vane lower cover plate 2.
In a preferred embodiment, after the welding between the guide vane upper cover plate 1 and the guide vane lower cover plate 2 is completed, the radial guide vane is subjected to turning finish machining, and the fillet, the round edge and the deburring treatment are ground by a bench worker.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A machining method for a radial guide vane for a pump is characterized by comprising the following steps:
splitting the three-dimensional modeling of the radial guide vane into a guide vane upper cover plate model and a guide vane lower cover plate model;
respectively roughly machining a guide vane upper cover plate and a guide vane lower cover plate according to the guide vane upper cover plate model and the guide vane lower cover plate model;
and milling radial blades on the guide vane lower cover plate, and welding the radial blades on the inner surface of the guide vane upper cover plate to complete the fixed connection between the guide vane upper cover plate and the guide vane lower cover plate, so as to complete the processing of the radial guide vanes.
2. The method of claim 1, wherein the welding of the radial blade to the inner surface of the upper cover plate of the guide vane comprises:
milling a welding groove at one end of each radial blade close to the guide vane upper cover plate;
milling a groove body corresponding to the radial blade on the inner surface of the guide vane upper cover plate;
and welding the radial blade to the inner surface of the guide vane upper cover plate along the groove body.
3. The method as claimed in claim 2, wherein welding grooves are milled on both sides of each radial blade, and the slope of each welding groove is 50 ° to 60 °.
4. The machining method of the radial guide vane for the pump as claimed in claim 3, wherein when the radial guide vane is welded to the inner surface of the guide vane upper cover plate along the groove body, after a welding rod is extended from an outlet of a flow passage between two radial guide vanes, the radial guide vane is welded to the groove body on the inner surface of the guide vane upper cover plate through a welding groove, and during welding, argon gas and helium gas are used as welding arc shielding gas.
5. The machining method of the radial guide vane for the pump according to claim 4, wherein when the radial blades are welded to the inner surface of the guide vane upper cover plate along the groove, each radial blade is welded and fixed to the inner surface of the guide vane upper cover plate through symmetrical spot welding, and each welding line formed by the welding grooves on the radial blades and the groove on the guide vane upper cover plate is two grooves which are symmetrically arranged.
6. The machining method of the radial guide vane for the pump as claimed in claim 1, wherein before the radial blade is welded to the inner surface of the guide vane upper cover plate, fixing tables are respectively milled at the joint of the guide vane upper cover plate and the guide vane lower cover plate, so that the guide vane upper cover plate and the guide vane lower cover plate are positioned and fixed through the fixing tables to ensure the coaxiality of the guide vane upper cover plate and the guide vane lower cover plate.
7. The machining method for the radial guide vane for the pump as claimed in claim 1, wherein after the welding between the guide vane upper cover plate and the guide vane lower cover plate is completed, the combined guide vane upper cover plate and the guide vane lower cover plate are subjected to heat treatment to eliminate residual internal stress of the guide vane upper cover plate and the guide vane lower cover plate.
8. The machining method of the radial guide vane for the pump according to claim 1, wherein after the welding between the guide vane upper cover plate and the guide vane lower cover plate is completed, the radial guide vane is subjected to turning finish machining, and a bench worker carries out fillet grinding, round edge grinding and deburring treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309079.5A CN111069868A (en) | 2019-12-18 | 2019-12-18 | Machining method of radial guide vane for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911309079.5A CN111069868A (en) | 2019-12-18 | 2019-12-18 | Machining method of radial guide vane for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111069868A true CN111069868A (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911309079.5A Pending CN111069868A (en) | 2019-12-18 | 2019-12-18 | Machining method of radial guide vane for pump |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107335A (en) * | 2009-12-23 | 2011-06-29 | 沈阳鼓风机集团有限公司 | Welding manufacturing method of closed-type turbine wheel of centripetal expander |
| CN202955027U (en) * | 2012-11-29 | 2013-05-29 | 无锡艾比德泵业有限公司 | Impeller of centrifugal pump |
| CN103394880A (en) * | 2013-08-15 | 2013-11-20 | 沈阳三科水力机械制造有限公司 | Large-sized circulating pump impeller forming method through swing welding |
| CN103775387A (en) * | 2013-09-09 | 2014-05-07 | 江苏国泉泵业制造有限公司 | AP1000 nuclear main pump radial direction guide vane hydraulic design |
| CN105904160A (en) * | 2016-05-10 | 2016-08-31 | 武汉船用机械有限责任公司 | Impeller machining method |
| CN106593945A (en) * | 2015-10-14 | 2017-04-26 | 阿特拉斯·科普柯能源有限公司 | Turbine wheel for a radial turbine |
-
2019
- 2019-12-18 CN CN201911309079.5A patent/CN111069868A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107335A (en) * | 2009-12-23 | 2011-06-29 | 沈阳鼓风机集团有限公司 | Welding manufacturing method of closed-type turbine wheel of centripetal expander |
| CN202955027U (en) * | 2012-11-29 | 2013-05-29 | 无锡艾比德泵业有限公司 | Impeller of centrifugal pump |
| CN103394880A (en) * | 2013-08-15 | 2013-11-20 | 沈阳三科水力机械制造有限公司 | Large-sized circulating pump impeller forming method through swing welding |
| CN103775387A (en) * | 2013-09-09 | 2014-05-07 | 江苏国泉泵业制造有限公司 | AP1000 nuclear main pump radial direction guide vane hydraulic design |
| CN106593945A (en) * | 2015-10-14 | 2017-04-26 | 阿特拉斯·科普柯能源有限公司 | Turbine wheel for a radial turbine |
| CN105904160A (en) * | 2016-05-10 | 2016-08-31 | 武汉船用机械有限责任公司 | Impeller machining method |
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Application publication date: 20200428 |