CN103143900B - Welding manufacture process method for pump wheel of vertical shaft single-stage and single-suction centrifugal large-sized water pump - Google Patents
Welding manufacture process method for pump wheel of vertical shaft single-stage and single-suction centrifugal large-sized water pump Download PDFInfo
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- CN103143900B CN103143900B CN201310111378.4A CN201310111378A CN103143900B CN 103143900 B CN103143900 B CN 103143900B CN 201310111378 A CN201310111378 A CN 201310111378A CN 103143900 B CN103143900 B CN 103143900B
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Abstract
The invention relates to an advanced process method capable of ensuring the welding manufacture quality of a pump wheel of a vertical shaft single-stage and single-suction centrifugal large-sized water pump. The advanced process method belongs to the fundamental innovation on an assembly welding process of a large-sized water pump and belongs to the essential change on the manufacture method. When the process method provided by the invention is used, the integral assembly size of the pump wheel can be ensured during the first assembly. Outer rings of a lower ring and an upper crown are removed, conditions are created for the welding of welding seams at the water inlet edge of the pump wheel, and the welding seams which cannot be welded before can be welded. The process method has the advantages that an integral assembly three-time dismounting and mounting assembly welding process is adopted for replacing the original integral assembly welding process method, the welding reachability can be greatly improved, the welding seam quality of the pump wheel is ensured, the critical dimension stability of the pump wheel is ensured, and the assembly welding quality of the large-sized pump wheel is obviously improved.
Description
Technical field
The present invention relates to a kind of welding manufacture technique of producing the centrifugal large pump pump impeller of vertical shaft one step single sucking.
Background technology
Produce water pump pump impeller in the past and be medium-sized and small-sized pump impeller, its structure is simple, and leaf curling degree is less, assembling and to weld difficulty little.For large-scale high-lift pump impeller, because hydraulic performance is to the particular/special requirement of its structure, leaf curling is serious, opening is very little, assembly difficulty is large, and blade and crown, lower interannular weld seam access for welding are not good, take traditional erection welding technology to complete the manufacturing.
The content of invention
The invention provides and a kind ofly ensure the tolerance of vertical shaft one step single sucking centrifugal large pump pump impeller and a kind of erection welding manufacturing process of quality.Technical scheme of the present invention is: 1) according to drawing requirement, and use the method for casting processing to manufacture crown inner ring, crown outer shroud, lower ring inner ring and lower ring outer shroud, the method that pump impeller blade uses forging compression molding to add digital control processing makes; 2) once assemble: according to drawing requirement, crown inner ring and outer shroud are assembled together; Being inverted by crown lies against on platform, the inner ring of assembling blade, lower ring and outer shroud; 3) remove: after adjust size meets drawing requirement, remove the outer shroud of crown and the outer shroud of lower ring; 4) once welding with polish: wear the weld seam that axle welds blade and crown inner ring, lower ring inner ring, polishing welding seams fillet; 5) secondary assembling: according to drawing requirement, assembling crown outer shroud; 6) secondary welding and polishing: wear the weld seam that axle welds blade and crown outer shroud, the weld seam between welding crown inner and outer ring, polishing welding seams fillet; 7) three assemblings: according to drawing requirement, the lower ring outer shroud of assembling; 8) three welding: the weld seam wearing axle welding blade and lower ring outer shroud, the weld seam between the lower ring inner and outer ring of welding; 9) clear up: the spatter that cleaning welding produces; 10) roughly grind: corase grind blade and crown, the fillet of lower girth joint and flow-passing surface; 11) stress relief annealing: require to carry out stress relief annealing according to annealing process; 12) refine: fine grinding blade and crown, the fillet of lower girth joint and flow-passing surface.
The pump impeller of water pump is generally made up of crown, lower ring and pump impeller blade.For ensureing the resistant to rust ability of pump impeller, above-mentioned three kinds of parts are generally made by stainless steel.Crown, lower ring are generally cast steel, and casting aft-loaded airfoil becomes drawing requirement size; Pump impeller blade is generally made by steel plate, cast steel or forged steel, and aft-loaded airfoil of getting the raw materials ready becomes figure paper size.
The present invention is applicable to the centrifugal large pump pump impeller of large-sized vertical shaft one step single sucking.For the centrifugal large pump pump impeller of large-sized vertical shaft one step single sucking, Conventional processing methods cannot ensure access for welding and welding quality.According to process in the past, the crown of pump impeller, lower ring are overall structure, overall erection welding.But along with the significantly raising of pump head and power, blade twist angle increases, and open height is minimum, as process traditionally, crown, between lower ring and blade, weld seam cannot all complete, and welding quality is difficult to ensure.
The present invention is the basic innovation in large pump erection welding process, is change in essence in manufacture method.Use process of the present invention, the overall fitted position of pump impeller can be guaranteed when first time assembling.The dismounting of crown, lower ring outer shroud, for the welding of pump impeller blade water inlet side weld seam creates condition, makes the weld seam that originally cannot weld become feasible.
The present invention adopts the erection welding process of overall assembling three dismounting to replace original entirety assembling welding technique, access for welding is significantly improved, ensure that the quality of pump impeller weld seam, ensure pump impeller critical size stability, large-scale pump impeller erection welding quality obviously promotes.
Accompanying drawing explanation
Fig. 1 is the structural representation of the centrifugal large pump pump impeller of vertical shaft one step single sucking.
Fig. 2 is the process schematic diagram of the centrifugal large pump pump impeller of vertical shaft one step single sucking.
Detailed description of the invention
The invention provides and a kind ofly ensure the tolerance of vertical shaft one step single sucking centrifugal large pump pump impeller and a kind of erection welding manufacturing process of quality.Technical scheme of the present invention is:
1) according to drawing requirement, use the method for casting processing to manufacture crown inner ring, crown outer shroud, lower ring inner ring and lower ring outer shroud, the method that pump impeller blade uses forging compression molding to add digital control processing makes;
2) once assemble: according to drawing requirement, crown inner ring and outer shroud are assembled together; Being inverted by crown lies against on platform, the inner ring of assembling blade, lower ring and outer shroud;
3) remove: after adjust size meets drawing requirement, remove the outer shroud of crown and the outer shroud of lower ring;
4) once welding with polish: wear the weld seam that axle welds blade and crown inner ring, lower ring inner ring, polishing welding seams fillet;
5) secondary assembling: according to drawing requirement, assembling crown outer shroud;
6) secondary welding and polishing: wear the weld seam that axle welds blade and crown outer shroud, the weld seam between welding crown inner and outer ring, polishing welding seams fillet;
7) three assemblings: according to drawing requirement, the lower ring outer shroud of assembling;
8) three welding: the weld seam wearing axle welding blade and lower ring outer shroud, the weld seam between the lower ring inner and outer ring of welding;
9) clear up: the spatter that cleaning welding produces;
10) roughly grind: corase grind blade and crown, the fillet of lower girth joint and flow-passing surface;
11) stress relief annealing: require to carry out stress relief annealing according to annealing process;
12) refine: fine grinding blade and crown, the fillet of lower girth joint and flow-passing surface.
Be illustrated in figure 1 vertical shaft one step single sucking centrifugal large pump pump impeller structural representation, whole pump impeller is made up of crown inner ring 1, crown outer shroud 2, pump impeller blade 3, lower ring outer shroud 4 and lower ring inner ring 5.
Be illustrated in figure 2 present invention process Method And Principle schematic diagram.In order to ensure the weld seam accessibility of blade 3 and crown inner ring 1, lower ring inner ring 5, when welding above-mentioned weld seam, without crown outer shroud 2 and lower ring outer shroud 4.
Need equipment be used:
● welding specific purpose tool axle
● gas metal-arc welder
● 2000t hydraulic press
● tape measure
● attachment strap, bolt
● bright light torch
● blade forming mould
● blade tempering Special support instrument
● annealing furnace
● runner bucket is imported and exported angle and is checked model and sample plate frame
● anti-deformation instrument 2 overlaps
Concrete technology step:
● get the raw materials ready, according to drawing requirement, use the method for casting processing to manufacture crown (inner ring and outer shroud) and lower ring (inner ring and outer shroud);
● blade compression molding, blade puts into annealing furnace heating, programming rate (40 DEG C ~ 60 DEG C)/hour, be heated to 1100 DEG C, be incubated 140 minutes, die mould.After blade placing is good; patrix is driven slowly to press to matched moulds with hydraulic press maximum pressure; then patrix lifts 10mm; descend press-fitting mould again; repeat operation twice, water flowing cooled blade after the peripheral temperature of blade reaches 800 DEG C, when blade cools in a mold; pressure is as far as possible constant, and minimum pressure remains 800t.When blade pressure is cooled to 300 DEG C, hydraulic press is again with maximum pressure pressurization, and when blade cools in a mold, pressure remains unchanged as far as possible, and maximum pressure keeps 1200t, until blade peripheral temperature reaches room temperature;
● blade tempering and processing, blade stands up in stove, is positioned on Special support instrument, and temperature is 630 DEG C, is incubated and cools in atmosphere after 140 minutes, programming rate (40 DEG C ~ 60 DEG C)/hour; Blasting treatment is carried out to blade, scale removal, turn processing;
● once assemble: according to drawing requirement, crown inner ring, crown outer shroud are assembled together, leveling crown, assemble blade in order, assembling lower ring inner ring, outer shroud, adjust size is until qualified, check that angle imported and exported by runner, by firm to crown inner ring, lower ring inner ring and blade joint welding;
● remove: remove crown outer shroud and lower ring outer shroud; Assembling blade openings anti-deformation instrument 1 overlaps;
● once welding and polishing: will weld specific purpose tool axle and pump impeller is assembled together, instrument axle is crouched and puts, weld crown inner ring, weld seam between lower ring inner ring and blade, polishing welding seams fillet;
● secondary assembles: once after welding, assembling crown outer shroud, and the qualified rear joint welding of adjust size is firm; Erection welding anti-deformation instrument 1 overlaps;
● secondary welding and polishing: weld the weld seam of blade and crown outer shroud, crown inner ring and outer ring weld, polishing welding seams fillet;
● three assemblings: after secondary welding, the lower ring outer shroud of assembling, the qualified rear joint welding of adjust size is firm;
● three welding: the weld seam of welding blade and lower ring outer shroud, the weld seam between the lower ring inner and outer ring of welding;
● cleaning: the spatter on cleaned stream interface;
● corase grind: polishing welding seams fillet;
● stress relief annealing: require to carry out stress relief annealing according to annealing process;
● fine grinding: fine grinding blade and crown, the fillet of lower girth joint and flow-passing surface.
The present invention is the basic innovation in large pump erection welding process, is change in essence in manufacture method.The process program welded for three times three of pump impeller assemblings in the present invention is first Application, creates according to this pump impeller structure.Use process of the present invention, the overall fitted position of pump impeller can be guaranteed when first time assembling.The dismounting of crown, lower ring outer shroud, for the welding of pump impeller blade water inlet side weld seam creates condition, makes the weld seam that originally cannot weld become feasible.The use of 2 cover anti-deformation instruments, overcomes the problem of annular strain under string distance, crown between pump impeller welding process Leaf.
The present invention adopts the erection welding process of overall assembling three dismounting to replace original entirety assembling welding technique, access for welding is significantly improved, ensure that the quality of pump impeller weld seam, ensure pump impeller critical size stability, large-scale pump impeller erection welding quality obviously promotes.
Claims (1)
1. a welding manufacture technique for the centrifugal large pump pump impeller of vertical shaft one step single sucking, is characterized in that:
1) according to drawing requirement, use the method for casting processing to manufacture crown inner ring, crown outer shroud, lower ring inner ring and lower ring outer shroud, the method that pump impeller blade uses forging compression molding to add digital control processing makes;
2) once assemble: according to drawing requirement, crown inner ring and outer shroud are assembled together; Being inverted by crown lies against on platform, assembling blade, lower ring inner ring and lower ring outer shroud;
3) remove: after adjust size meets drawing requirement, remove crown outer shroud and lower ring outer shroud;
4) once welding with polish: wear the weld seam that axle welds blade and crown inner ring, lower ring inner ring, polishing welding seams fillet;
5) secondary assembling: according to drawing requirement, assembling crown outer shroud;
6) secondary welding and polishing: wear the weld seam that axle welds blade and crown outer shroud, the weld seam between welding crown inner and outer ring, polishing welding seams fillet;
7) three assemblings: according to drawing requirement, the lower ring outer shroud of assembling;
8) three welding: the weld seam wearing axle welding blade and lower ring outer shroud, the weld seam between the lower ring inner and outer ring of welding;
9) clear up: the spatter that cleaning welding produces;
10) roughly grind: corase grind blade and crown, the fillet of lower girth joint and flow-passing surface;
11) stress relief annealing: require to carry out stress relief annealing according to annealing process;
12) refine: fine grinding blade and crown, the fillet of lower girth joint and flow-passing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310111378.4A CN103143900B (en) | 2013-04-02 | 2013-04-02 | Welding manufacture process method for pump wheel of vertical shaft single-stage and single-suction centrifugal large-sized water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310111378.4A CN103143900B (en) | 2013-04-02 | 2013-04-02 | Welding manufacture process method for pump wheel of vertical shaft single-stage and single-suction centrifugal large-sized water pump |
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| Publication Number | Publication Date |
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| CN103143900A CN103143900A (en) | 2013-06-12 |
| CN103143900B true CN103143900B (en) | 2015-06-24 |
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| CN201310111378.4A Active CN103143900B (en) | 2013-04-02 | 2013-04-02 | Welding manufacture process method for pump wheel of vertical shaft single-stage and single-suction centrifugal large-sized water pump |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107201981A (en) * | 2017-07-21 | 2017-09-26 | 河南瑞发水电设备有限责任公司 | Mixed-flow minute diameter long-short blade rotating wheel and its manufacturing process |
| CN108035833A (en) * | 2017-12-08 | 2018-05-15 | 重庆水轮机厂有限责任公司 | A kind of hydraulic turbine low specific-speed mixed-flow minor diameter manufacturing of runner method |
| CN113601058A (en) * | 2021-09-03 | 2021-11-05 | 东芝水电设备（杭州）有限公司 | Method for welding long and short blade rotating wheels of pumped storage unit |
| CN113898606A (en) * | 2021-09-16 | 2022-01-07 | 无锡新高金属制造有限公司 | Welding manufacturing process of centrifugal large-scale water pump impeller |
| CN114012342B (en) * | 2021-12-10 | 2023-05-26 | 东方电气集团东方电机有限公司 | Water turbine runner positioning and welding method based on wedge-shaped auxiliary device |
| CN116079194B (en) * | 2023-03-23 | 2023-09-19 | 哈尔滨电机厂有限责任公司 | Narrow-gap gas shielded welding auxiliary pumping and storage runner split-ring assembly welding method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5538395A (en) * | 1993-03-25 | 1996-07-23 | Ozen S.A. | Thermoplastic pump rotor |
| EP1533104A2 (en) * | 2003-11-21 | 2005-05-25 | Siemens Aktiengesellschaft | Process for manufacturing a rotor for a centrifugal pump |
| CN101406977A (en) * | 2008-11-25 | 2009-04-15 | 北京二七轨道交通装备有限责任公司 | Vacuum brazing method for pump impeller |
| CN101793264A (en) * | 2010-04-28 | 2010-08-04 | 自贡市红旗泵业密封件制造有限公司 | Method for manufacturing impeller of desulphurization circulating pump |
| CN102364083A (en) * | 2011-07-01 | 2012-02-29 | 哈尔滨电机厂有限责任公司 | Long-short blade rotating wheel for mixed flow pump turbine |
-
2013
- 2013-04-02 CN CN201310111378.4A patent/CN103143900B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5538395A (en) * | 1993-03-25 | 1996-07-23 | Ozen S.A. | Thermoplastic pump rotor |
| EP1533104A2 (en) * | 2003-11-21 | 2005-05-25 | Siemens Aktiengesellschaft | Process for manufacturing a rotor for a centrifugal pump |
| CN101406977A (en) * | 2008-11-25 | 2009-04-15 | 北京二七轨道交通装备有限责任公司 | Vacuum brazing method for pump impeller |
| CN101793264A (en) * | 2010-04-28 | 2010-08-04 | 自贡市红旗泵业密封件制造有限公司 | Method for manufacturing impeller of desulphurization circulating pump |
| CN102364083A (en) * | 2011-07-01 | 2012-02-29 | 哈尔滨电机厂有限责任公司 | Long-short blade rotating wheel for mixed flow pump turbine |
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