CN102500942A - Method for assembling and processing secondary stud for disc type rotor spider of hydraulic turbine generator on site - Google Patents
Method for assembling and processing secondary stud for disc type rotor spider of hydraulic turbine generator on site Download PDFInfo
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- CN102500942A CN102500942A CN2011103702892A CN201110370289A CN102500942A CN 102500942 A CN102500942 A CN 102500942A CN 2011103702892 A CN2011103702892 A CN 2011103702892A CN 201110370289 A CN201110370289 A CN 201110370289A CN 102500942 A CN102500942 A CN 102500942A
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Abstract
The invention relates to a method for assembling and processing a secondary stud for a disc type rotor spider of a hydraulic turbine generator on site. By measuring the actual size of a main stud of the rotor spider on the site of a power station, assembling and processing allowance of the secondary stud is calculated; and after being assembled and processed on site, the secondary stud is assembled and welded on the main stud, so that the assembly accuracy of the secondary stud meets the requirement of becoming a positioning reference for magnetic yoke assembly. Through the method, the problem that the deformed main stud cannot meet the positioning of the magnetic yoke assembly after overall assembly and welding of the rotor spider is solved; and the method has the advantages of high positioning accuracy, small welding quantity, low welding stress, easiness and convenience in operation, short construction period and the like.
Description
Technical field
The present invention relates to the method for hydrogenerator disc rotor support scene with addition of the secondary stud of worker,
Background technology
Large-sized water turbine generator disc rotor support is because enormous size; Can't whole Transporting arrive the mounting site scene; Therefore be designed the structure of carrying out the integral installation weldering at building-site by a centerbody and several outer ring assemblies, because the rotor field spider build is huge, the field Welding amount is huge; Therefore; Its cylindrical master stud radially, axially and the tangential deviation generally all be controlled at 5～10mm, and down preface yoke matching requirements master stud positioning reference radially, axially and the tangential deviation be no more than ± 0.2mm, we work out this kind method and make the secondary stud of dress postwelding can reach the requirement as the positioning reference of yoke assembling for this reason.
The content of invention
It is high to the purpose of this invention is to provide a kind of positioning accuracy, and welding capacity is little, and welding stress is low, and is easy and simple to handle, and the hydrogenerator disc rotor support scene of short construction period is with addition of the method for the secondary stud of worker.Technical scheme of the present invention is: a kind of hydrogenerator disc rotor support scene is with addition of the method for the secondary stud of worker,
Comprise following processing step:
(a) utilize inside micrometer, measure main stud top radial dimension, hang plummet and be fixed on the method for assigned address with hanging steel wire lower end that the steel wire method is about to diameter 0.3mm simultaneously, measure main stud tangential and radial tilt value as measuring basis; (b) be that radius confirms that instrument is the circumferential position line that closes screw on the main stud with rotor field spider measurement column center to survey tool installing hole distance; (c) the arrangement of reinforcement survey tool is installed; (d) confirm slotted line: on survey tool, fix four steel wires, and mount four plummets respectively in the lower end, each is the position line of secondary stud on main stud to the formed plane of steel wire in the formed projection of main stud outerplanar; (e) confirm that secondary stud joins the plane size: measure the distance of four steel wires respectively to main stud plane; Physical location size according to the arrangement of reinforcement survey tool finally calculates the very little with addition of Chinese musical scale of secondary stud again, so that perpendicularity, flatness, chord length, the radial dimension of each secondary stud reach designing requirement behind the secondary stud of final dress weldering; (f) join the secondary stud of plane: measure the gained data according to last preface, on planer, utilize the plane tire to adjust a secondary stud position allowance, process secondary stud band behind plane; (g) join joint hole on the secondary stud of brill; (h) the secondary stud of dress weldering: secondary stud is fixed on the corresponding main stud with plug screw, and secondary stud dress is welded on the main stud by the welding conditions of special use.
The present invention is roughing master stud cylindrical in factory; Therefore according to practical experience, the radial cut of rotor field spider integral installation postwelding master stud cylindrical is generally less than 10mm to deviation, in factory, processes the secondary stud of respective amount in advance according to the yoke matching requirements; And leave enough allowance at its thickness direction; According to the concrete data of field measurement master stud, behind the secondary stud its dress is welded on the main stud with addition of the worker at thickness direction, make keyway positional precision on the secondary stud reach the requirement of yoke closed assembly.
Technique effect of the present invention is: rotor support power generator cylindrical master stud generally has 10～30 not wait; Its keyway is as the benchmark of the on-the-spot yoke closed assembly in the power station; Past is because the rotor field spider size is little; Can in factory, integral body process, building-site carries out the integral installation weldering to rotor field spider in the power station.Prior art is because the disc rotor stent size is huge, and diameter is near 20 meters, and height is at 4～5 meters; The integral installation postwelding; The positional precision of its cylindrical master stud generally can only be controlled between 10～15mm, and its positional precision can not reach the requirement of the positioning reference of yoke assembling: radial direction is less than 0.2mm, and tangential direction is less than 0.4mm; Flatness, perpendicularity is less than 0.1mm.The present invention is welded in its dress on the main stud behind the secondary stud of worker through the scene, makes the positional precision of secondary stud reach the requirement of above-mentioned yoke assembling and positioning benchmark, thereby has guaranteed the quality of yoke assembling.
Description of drawings
Fig. 1 is the installation method of string apart from survey tool
Fig. 2 is the method for adjustment of string apart from survey tool
Fig. 3 is that method is confirmed in the position of secondary stud on main stud
The specific embodiment
Comprise following processing step:
(a) utilize inside micrometer, measure main stud top radial dimension, hang plummet and be fixed on the method for assigned address with hanging steel wire lower end that the steel wire method is about to diameter 0.3mm simultaneously, measure main stud tangential and radial tilt value as measuring basis; (b) be that radius confirms that instrument is the circumferential position line that closes screw on the main stud with rotor field spider measurement column center to survey tool installing hole distance; (c) the arrangement of reinforcement survey tool is installed; (d) confirm slotted line: on survey tool, fix four steel wires, and mount four plummets respectively in the lower end, each is the position line of secondary stud on main stud to the formed plane of steel wire in the formed projection of main stud outerplanar; (e) confirm that secondary stud joins the plane size: measure the distance of four steel wires respectively to main stud plane; Physical location size according to the arrangement of reinforcement survey tool finally calculates the very little with addition of Chinese musical scale of secondary stud again, so that perpendicularity, flatness, chord length, the radial dimension of each secondary stud reach designing requirement behind the secondary stud of final dress weldering; (f) join the secondary stud of plane: measure the gained data according to last preface, on planer, utilize the plane tire to adjust a secondary stud position allowance, process secondary stud band behind plane; (g) join joint hole on the secondary stud of brill; (h) the secondary stud of dress weldering: secondary stud is fixed on the corresponding main stud with plug screw, and secondary stud dress is welded on the main stud by the welding conditions of special use.
Practical implementation technology of the present invention is:
(a) measurement of each main stud string distance of rotor field spider and radial dimension,
(b) cartridge rotor support measurement column and main stud measurement block; Adjustment steel wire, line bob, oil drum and earphone are ready to the micrometer head, utilize inside micrometer; Measure main stud top radial dimension, simultaneously with hang the steel wire method measure main stud circumferentially, radial tilt value. as shown in Figure 1.
(c) utilize movable omnipotent brill of building-site or magnetic force to bore, bore and attack screw, the arrangement of reinforcement survey tool is installed, be fixed on the arrangement of reinforcement survey tool on the muscle with instrument screw and packing ring, fixing after the accurate adjustment, with jackscrew adjustment arrangement of reinforcement survey tool height and level, as shown in Figure 2.
(d) going up the plane absolute altitude with each main stud hook is that benchmark is upwards drawn the horizontal level line of plane on the lateral surface of main stud upper end on the secondary stud; This line is secondary stud position line ab on the main stud; Position line ab on the main stud is a benchmark with secondary stud, draws secondary stud lower end downwards at main stud lateral surface position level horizontal line, and this line is the upper/lower positions line cd of secondary stud on main stud; This upper and lower horizontal horizontal line is upper and lower measuring position line when hanging steel wire, and is as shown in Figure 3.
(e) secondary stud is joined the plane determining dimensions: wire peg on the fixed leg of arrangement of reinforcement survey tool; Following line weighs down puts into the oil drum that machine oil is housed; Belong to two intersections of planes and corresponding main stud lateral surface respectively with two steel wires in two steel wire planes, place and right sides, left side; Confirm the circumferential position line of secondary stud on main stud, and mark circumferential position line ac, bd respectively, the secondary stud one-tenth-value thickness 1/10 δ=H that calculates at main stud lateral surface
Measured value-50mm joins the plane dimension line according to what secondary stud one-tenth-value thickness 1/10 marked secondary stud respectively, and stamps and main stud upper and lower end pairing prefix, at main stud lateral surface, marks the center line O of secondary stud circumferential position line respectively
2O
2', measured center line O
2O
2' and joint hole center line O
1O
1' between distance, survey the distance of main stud first M24 screw horizontal center line of upper end and the secondary stud position line on the main stud respectively
(f) join and dig secondary stud: secondary stud clamping is being dug on the tire, according to join dig size (the tire gradient is dug in adjustment, and thick, the secondary stud of adjustable cast iron planes guarantees secondary stud gauge δ ± 0.10mm to size and roughness, flatness≤0.10mm,
(g) join and bore joint hole on the secondary stud: do not have at secondary stud to mark the joint hole center line on the plane of groove; Mark first hole horizontal center line of secondary stud upper end, drill jig fastens by joint hole center line and first hole horizontal center line centering of secondary stud upper end, bores φ 26mm hole; Move drill jig; Press drilling bore hole and joint hole center line location, bore all the other each holes
(h) the secondary stud of dress weldering: by the pairing prefix that secondary stud is fixing with clip, adjustment pressing plate etc., press drawing fixed joint stud with screw again, adjust secondary stud translot elevation and tangential tilt degree; Adorn secondary stud keyway survey tool, the jackscrew of packing at interval, the jackscrew end face must lean tightly; By the plug welding of special welding procedure rules; Pull down screw after the cooling, the jackscrew of packing into is used with the sampling technology plug welding.
Claims (1)
1. a hydrogenerator disc rotor support scene is with addition of the side of the secondary stud of worker
Method is characterized in that: comprise following processing step:
(a) utilize inside micrometer, measure main stud top radial dimension, hang plummet and be fixed on the method for assigned address with hanging steel wire lower end that the steel wire method is about to diameter 0.3mm simultaneously, measure main stud tangential and radial tilt value as measuring basis; (b) be that radius confirms that instrument is the circumferential position line that closes screw on the main stud with rotor field spider measurement column center to survey tool installing hole distance; (c) the arrangement of reinforcement survey tool is installed; (d) confirm slotted line: on survey tool, fix four steel wires, and mount four plummets respectively in the lower end, each is the position line of secondary stud on main stud to the formed plane of steel wire in the formed projection of main stud outerplanar; (e) confirm that secondary stud joins the plane size: measure the distance of four steel wires respectively to main stud plane; Physical location size according to the arrangement of reinforcement survey tool finally calculates the very little with addition of Chinese musical scale of secondary stud again, so that perpendicularity, flatness, chord length, the radial dimension of each secondary stud reach designing requirement behind the secondary stud of final dress weldering; (f) join the secondary stud of plane: measure the gained data according to last preface, on planer, utilize the plane tire to adjust a secondary stud position allowance, process secondary stud band behind plane; (g) join joint hole on the secondary stud of brill; (h) the secondary stud of dress weldering: secondary stud is fixed on the corresponding main stud with plug screw, and secondary stud dress is welded on the main stud by the welding conditions of special use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103702892A CN102500942A (en) | 2011-11-21 | 2011-11-21 | Method for assembling and processing secondary stud for disc type rotor spider of hydraulic turbine generator on site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103702892A CN102500942A (en) | 2011-11-21 | 2011-11-21 | Method for assembling and processing secondary stud for disc type rotor spider of hydraulic turbine generator on site |
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| CN102500942A true CN102500942A (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103702892A Pending CN102500942A (en) | 2011-11-21 | 2011-11-21 | Method for assembling and processing secondary stud for disc type rotor spider of hydraulic turbine generator on site |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209738A (en) * | 2013-05-29 | 2014-12-17 | 东方电气集团东方电机有限公司 | Thrust foundation ring and lower machine frame assembling method |
| CN105880699A (en) * | 2016-04-05 | 2016-08-24 | 杭州福朗机电科技有限公司 | Processing measuring method for keyway of rotor bracket of hydraulic turbine generator |
| CN112518252A (en) * | 2020-11-30 | 2021-03-19 | 哈尔滨电机厂有限责任公司 | Hydraulic generator rotor support construction site manufacturing process method |
| CN113523510A (en) * | 2021-07-21 | 2021-10-22 | 哈尔滨电机厂有限责任公司 | Double-vehicle submerged arc welding manufacturing method of seven-stud rotor bracket |
| CN114473134A (en) * | 2022-02-24 | 2022-05-13 | 中国长江电力股份有限公司 | Rotor support weak constraint symmetric welding process |
Citations (3)
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|---|---|---|---|---|
| CN1103341A (en) * | 1994-08-13 | 1995-06-07 | 中国水利水电第四工程局机电安装处 | Process for installation of in-situ welded large-size disc type water-wheel generator rotor support |
| CN1106108A (en) * | 1994-08-05 | 1995-08-02 | 中国水利水电第四工程局机电安装处 | In-situ welding method for assembling split wheels of large-scale mixed turbine |
| CN102141363A (en) * | 2010-12-23 | 2011-08-03 | 天津市天发重型水电设备制造有限公司 | Device for measuring rotor bracket of hydrogenerator oblique stud support arm structure |
-
2011
- 2011-11-21 CN CN2011103702892A patent/CN102500942A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106108A (en) * | 1994-08-05 | 1995-08-02 | 中国水利水电第四工程局机电安装处 | In-situ welding method for assembling split wheels of large-scale mixed turbine |
| CN1103341A (en) * | 1994-08-13 | 1995-06-07 | 中国水利水电第四工程局机电安装处 | Process for installation of in-situ welded large-size disc type water-wheel generator rotor support |
| CN102141363A (en) * | 2010-12-23 | 2011-08-03 | 天津市天发重型水电设备制造有限公司 | Device for measuring rotor bracket of hydrogenerator oblique stud support arm structure |
Non-Patent Citations (1)
| Title |
|---|
| 周峰: "双沟水电站发电机转子安装工艺", 《上海大中型电机》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209738A (en) * | 2013-05-29 | 2014-12-17 | 东方电气集团东方电机有限公司 | Thrust foundation ring and lower machine frame assembling method |
| CN105880699A (en) * | 2016-04-05 | 2016-08-24 | 杭州福朗机电科技有限公司 | Processing measuring method for keyway of rotor bracket of hydraulic turbine generator |
| CN112518252A (en) * | 2020-11-30 | 2021-03-19 | 哈尔滨电机厂有限责任公司 | Hydraulic generator rotor support construction site manufacturing process method |
| CN112518252B (en) * | 2020-11-30 | 2022-08-16 | 哈尔滨电机厂有限责任公司 | Hydraulic generator rotor support construction site manufacturing process method |
| CN113523510A (en) * | 2021-07-21 | 2021-10-22 | 哈尔滨电机厂有限责任公司 | Double-vehicle submerged arc welding manufacturing method of seven-stud rotor bracket |
| CN113523510B (en) * | 2021-07-21 | 2022-05-20 | 哈尔滨电机厂有限责任公司 | Double-vehicle submerged arc welding manufacturing method of seven-stud rotor support |
| CN114473134A (en) * | 2022-02-24 | 2022-05-13 | 中国长江电力股份有限公司 | Rotor support weak constraint symmetric welding process |
| CN114473134B (en) * | 2022-02-24 | 2024-04-16 | 中国长江电力股份有限公司 | Rotor support weak constraint symmetrical welding process |
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Application publication date: 20120620 |