CN101053928A - Bulb cross flow set tubular seat assembling and welding technology - Google Patents
Bulb cross flow set tubular seat assembling and welding technology Download PDFInfo
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- CN101053928A CN101053928A CN 200710049210 CN200710049210A CN101053928A CN 101053928 A CN101053928 A CN 101053928A CN 200710049210 CN200710049210 CN 200710049210 CN 200710049210 A CN200710049210 A CN 200710049210A CN 101053928 A CN101053928 A CN 101053928A
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- guide vane
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Abstract
The invention discloses a pipe saddle assembly-welding process for a bulb turbine unit, which can reduce welding deformation in maximum, solve the difficulty of manufacturing weld assembly of the pipe saddle in the bulb turbine unit by adopting measurements such as symmetry and backstep welding, blower gun vibration between intercalation, etc., through reasonably adjusting weld order. The invention has advantages of simple process and low cost.
Description
Technical field
The present invention relates to a kind of bulb cross flow set tubular seat assembling and welding technology.
Background technology
Certain power station bulb cross flow set tubular seat is the comparatively complicated large-sized structural parts that company runs into since the dawn of human civilization, it is made of inner cone, outer cone and fixed guide vane three big parts, nearly 80 tons of overall weight, inner cone and outer cone rely on fixed guide vane to be connected to become integral body, axial hydraulic thrust when bearing the weight of whole unit and operation.Tubular seat weldment complex structure, Heavy Weight, distinguish is many, the dimension precision requirement height, welding capacity big (nearly 5 tons of real consumption wlding) and at all can't integrally annealed, according to these characteristics, each big parts must be considered after the distortion itself as how best mode is combined into integral body with it controlling well again, it is made difficult point and is, with whole workpiece assembling welding (distinguish joint close millet cake welds or adds lacing wire and fixes), can guarantee the dislocation of overall dimensions and distinguish joint close face thereof after the welding, but not integrally annealed eliminates stress, to produce moderate finite deformation behind the workpiece distinguish, give metalworking, prepackage, building site installations etc. produce serious hidden danger of quality.
Summary of the invention
The objective of the invention is to overcome prior art eliminates stress as not integrally annealed and will produce the deficiency of moderate finite deformation behind the workpiece distinguish, a kind of bulb cross flow set tubular seat assembling and welding technology is provided, this technology is rationally adjusted the welding order, takes measures such as symmetry, backstep, the vibration of interlayer air pressure gun farthest to reduce welding deformation.
The objective of the invention is to be achieved through the following technical solutions: bulb cross flow set tubular seat assembling and welding technology comprises that blanking shaping, assembly welding, annealing and processing are connected technology:
Because the nature distortion can appear in the parts after partially-formed in the lifting process, can not participate in assembling directly, so require cold working that it is put the calibration of full pattern flame, must decorate the technology lacing wire in case of necessity, qualified with each part before guaranteeing assembling.
Require dress inner cone earlier during assembling, rule of thumb comparison repeatedly, computational analysis determines that short transverse is put 6-8mm, diametric(al) is put 8-10mm welding allowance for shrinkage.Simultaneously with the fixed guide vane dimidiation, get wherein one section and be loaded on leveling on the inner cone, can adopt the segmentation symmetrical welding after must decorateeing the technology lacing wire of sufficient intensity before the welding, prevent workpiece deformation as far as possible.Because groove is bigger, must adopt the many welding beads welding of multilayer, thus the upright weld-ring seam that stitches again of weldering earlier required, and can weld with the major diameter welding rod with the Φ 3.2 welding rods two-layer rear that feels secure, every weldering one deck must vibrate the deslagging destressing with air pressure gun, postwelding dimidiation annealing destressing.
The inner cone of postwelding changeed that operation processing down puts in place and and for whole as benchmark, with this benchmark line, the equipped outer cone of setting-out and remaining fixed guide vane, check the butt joint situation of fixed guide vane, in time handle the misalignment position.
In addition, parts such as Taper Pipe, fixed guide vane etc. that part is had relatively high expectations all adopt the smart blanking of numerical control, try one's best and reduce preceding period error, and model inspection, school shape are adopted in the back strictness that is shaped.Especially fixed guide vane is for dividing half hot forming, and being shaped badly can influence the later stage to dock misalignment when assembling excessive, reprocesses difficulty.
In whole assembling process, welding procedure personnel are follow-up service at any time, in time understands the process implementing situation and handles the interim problem that occurs, and improve assembly technology according to actual conditions, guarantees product quality.
The invention has the beneficial effects as follows: by reasonable adjustment welding order, take measures such as symmetry, backstep, the vibration of interlayer air pressure gun farthest to reduce welding deformation, solve the manufacturing difficult problem of weldments such as bulb cross flow set tubular seat, had characteristics such as technology is simple, with low cost.
Description of drawings
The structural representation of bulb cross flow set tubular seat
Among the figure, 1-inner cone, 2-outer cone, 3-fixed guide vane
The specific embodiment
The present invention will be further described below in conjunction with the specific embodiment, as Fig. 1, bulb cross flow set tubular seat is made of inner cone 1, outer cone 2 and fixed guide vane 3, nearly 80 tons of overall weight, inner cone 1 relies on fixed guide vanes 3 to be connected to become integral body with outer cone 2, axial hydraulic thrust when bearing the weight of whole unit and operation.Consider and produce and traffic condition that it is divided into the weldering of ten lobes dress, annealing and transportation the most at last.
Bulb cross flow set tubular seat assembling and welding technology comprises that blanking shaping, assembly welding, annealing and processing are connected technology:
(1) cold working is put the calibration of full pattern flame to Taper Pipe, the fixed guide vane of tubular seat before the dress weldering, decorates the technology lacing wire;
(2) when assembling dress inner cone earlier, short transverse is put 6-8mm, diametric(al) is put 8-10mm, the welding allowance for shrinkage with the fixed guide vane dimidiation, is got wherein one section and is loaded on leveling on the inner cone, decorates the technology lacing wire of sufficient intensity before the welding, the segmentation symmetrical welding;
(3) inner cone of postwelding is changeed operation processing down puts in place and and for whole as benchmark, with this benchmark line, the equipped outer cone of setting-out and remaining fixed guide vane, check the butt joint situation of fixed guide vane, in time handle the misalignment position.
Described segmentation symmetrical welding adopts the many welding beads of multilayer to weld, and weldering is earlier stood and stitched the weld-ring seam again, uses the major diameter welding rod welding of the two-layer back of Φ 3.2 welding rods bottoming, and every weldering one deck vibrates the deslagging destressing with air pressure gun, postwelding dimidiation annealing destressing.
Claims (2)
1, bulb cross flow set tubular seat assembling and welding technology comprises that blanking shaping, assembly welding, annealing and processing are connected technology, is characterized in that:
(1) cold working is put the calibration of full pattern flame to Taper Pipe, the fixed guide vane of tubular seat before the dress weldering, decorates the technology lacing wire;
(2) when assembling dress inner cone earlier, short transverse is put 6-8mm, diametric(al) is put 8-10mm, the welding allowance for shrinkage with the fixed guide vane dimidiation, is got wherein one section and is loaded on leveling on the inner cone, decorates the technology lacing wire of sufficient intensity before the welding, the segmentation symmetrical welding;
(3) inner cone of postwelding is changeed operation processing down puts in place and and for whole as benchmark, with this benchmark line, the equipped outer cone of setting-out and remaining fixed guide vane, check the butt joint situation of fixed guide vane, in time handle the misalignment position.
2, bulb cross flow set tubular seat assembling and welding technology according to claim 1, it is characterized in that: described segmentation symmetrical welding adopts the many welding bead welding of multilayer, the upright weld-ring seam that stitches again of weldering earlier, weld with the major diameter welding rod with the two-layer back of Φ 3.2 welding rods bottoming, every weldering one deck vibrates the deslagging destressing with air pressure gun, postwelding dimidiation annealing destressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710049210 CN101053928A (en) | 2007-05-31 | 2007-05-31 | Bulb cross flow set tubular seat assembling and welding technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710049210 CN101053928A (en) | 2007-05-31 | 2007-05-31 | Bulb cross flow set tubular seat assembling and welding technology |
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| Publication Number | Publication Date |
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| CN101053928A true CN101053928A (en) | 2007-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710049210 Pending CN101053928A (en) | 2007-05-31 | 2007-05-31 | Bulb cross flow set tubular seat assembling and welding technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915197A (en) * | 2010-09-07 | 2010-12-15 | 中国葛洲坝集团股份有限公司 | Installation and adjustment method for cylindrical valve of water turbine |
| CN102059461A (en) * | 2010-12-15 | 2011-05-18 | 广州中船黄埔造船有限公司 | High precision welding method for rudder horn, propeller shaft bracket and intermediate shaft bracket of long shaft ship |
| CN107695555A (en) * | 2017-11-21 | 2018-02-16 | 辽宁忠旺特种车辆制造有限公司 | Aluminium alloy tank car swash plate reinforcement welding procedure |
-
2007
- 2007-05-31 CN CN 200710049210 patent/CN101053928A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915197A (en) * | 2010-09-07 | 2010-12-15 | 中国葛洲坝集团股份有限公司 | Installation and adjustment method for cylindrical valve of water turbine |
| CN102059461A (en) * | 2010-12-15 | 2011-05-18 | 广州中船黄埔造船有限公司 | High precision welding method for rudder horn, propeller shaft bracket and intermediate shaft bracket of long shaft ship |
| CN102059461B (en) * | 2010-12-15 | 2012-12-12 | 广州中船黄埔造船有限公司 | High precision welding method for rudder horn, propeller shaft bracket and intermediate shaft bracket of long shaft ship |
| CN107695555A (en) * | 2017-11-21 | 2018-02-16 | 辽宁忠旺特种车辆制造有限公司 | Aluminium alloy tank car swash plate reinforcement welding procedure |
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