CN109519611A - A kind of draft tube elbow and manufacturing method - Google Patents
A kind of draft tube elbow and manufacturing method Download PDFInfo
- Publication number
- CN109519611A CN109519611A CN201811395304.7A CN201811395304A CN109519611A CN 109519611 A CN109519611 A CN 109519611A CN 201811395304 A CN201811395304 A CN 201811395304A CN 109519611 A CN109519611 A CN 109519611A
- Authority
- CN
- China
- Prior art keywords
- draft tube
- tube elbow
- unit
- plate
- buttcover
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/003—Rigid pipes with a rectangular cross-section
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/006—Rigid pipes specially profiled
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Embodiment of the invention discloses a kind of draft tube elbow and manufacturing methods, the draft tube elbow includes multiple single-unit pipes, the shape difference of multiple single-unit pipes is sequentially connected, make the draft tube elbow in bending, the single-unit tube section of one end draft tube elbow is circle, and the single-unit pipe of other end draft tube elbow is chamfering rectangle；Wherein, each single-unit pipe includes four buttcover plates, each buttcover plate includes the arc sections being located in the middle part of the buttcover plate and the straight plate part that the arc sections two sides are arranged in, and the straight plate part and the arc sections are integrally formed, and four buttcover plates, which are sequentially connected, makes the single-unit pipe in closed form.The draft tube elbow reduces the setting of each single-unit pipe weld seam, has simplified construction technology.
Description
Technical field
The present invention relates to power station equipment manufacturing fields, and in particular to a kind of draft tube elbow and manufacturing method.
Background technique
Draft tube elbow be for being connected to the bend loss of canalis spinalis and tailrace outlet below the hydraulic turbine in power station, volume compared with
Greatly, it is fabricated separately in traditional handicraft in traditional arc plate and straight flange plate, longitudinal joint, circular arc is arranged in arc plate and straight flange plate junction
Plate length direction both ends need to generally reserve the not equal pre-bendings straight section of 300 ~ 500mm long, then by veneer reeling machine roll-forming, wait roll up
It is grouped after the completion of system with straight flange plate, assembled and tune circle, finally welds longitudinal joint.This construction technology process is more, and adjusts circle
Difficulty is larger, and the more construction cost of weld seam is higher.
Summary of the invention
For solution the above-mentioned problems in the prior art, a kind of draft tube elbow is provided according to an aspect of the present invention,
The draft tube elbow includes multiple single-unit pipes, and the shape difference of multiple single-unit pipes is sequentially connected, and making the draft tube elbow is in bending,
The single-unit tube section of one end draft tube elbow is circle, and the single-unit pipe of other end draft tube elbow is chamfering rectangle；
Wherein, each single-unit pipe includes four buttcover plates, each buttcover plate include arc sections in the middle part of the buttcover plate and
The straight plate part of the arc sections two sides is set, and the straight plate part and the arc sections are integrally formed, and four buttcover plates successively connect
Connecing makes the single-unit pipe in closed form.
Preferably, the draft tube elbow single-unit tube section is that one end of arc is connected to the canalis spinalis of the hydraulic turbine, and the other end is used
In being connected to tailrace outlet.
Preferably, multiple single-unit pipes successively weld.
Preferably, the straight plate part of each buttcover plate is welded in the straight plate part of another buttcover plate.
A kind of draft tube elbow manufacturing method, the draft tube elbow manufacturing method packet are provided according to another aspect of the present invention
It includes:
To rolling with trapezoidal plate tile, fishplate bar is obtained；
Four buttcover plates successively weld, and obtain single-unit pipe；
Multiple single-unit pipes successively weld, and obtain draft tube elbow.
Preferably, described to rolling with trapezoidal plate tile, obtaining fishplate bar includes:
Ratio based on arc sections and straight plate part draws on band trapezoidal plate tile and rolls line；
By being based on rolling line to roller rolling machine, band trapezoidal plate tile is rolled, obtaining intermediate is arc sections, and two sides are straight
The single-unit pipe in plate portion.
The beneficial effects of the present invention are:
1) draft tube elbow shape is conveniently adjusted convenient for making draft tube elbow in bending by the setting of multiple single-unit pipes.
2) each single-unit pipe includes four buttcover plates, and each buttcover plate includes arc sections and straight plate part, reduces each list
The setting for saving pipe weld seam, has simplified construction technology.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the draft tube elbow of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the single-unit pipe of the embodiment of the present invention.
Wherein:
1, single-unit pipe；2, buttcover plate；3, arc sections；4, straight plate part.
Specific embodiment
Technical solution of the present invention is discussed in detail with reference to the accompanying drawing.
A kind of draft tube elbow is provided according to an aspect of the present invention, which is characterized in that the draft tube elbow includes multiple lists
Section pipe, the shape difference of multiple single-unit pipes are sequentially connected, and make the draft tube elbow in bending, the list of one end draft tube elbow
Saving tube section is circle, and the single-unit pipe of other end draft tube elbow is chamfering rectangle；
Wherein, each single-unit pipe includes four buttcover plates, each buttcover plate include arc sections in the middle part of the buttcover plate and
The straight plate part of the arc sections two sides is set, and the straight plate part and the arc sections are integrally formed, and four buttcover plates successively connect
Connecing makes the single-unit pipe in closed form.
Specifically, draft tube elbow shape is conveniently adjusted convenient for making draft tube elbow in bending by the setting of multiple single-unit pipes
Shape.Each single-unit pipe includes four buttcover plates, and each buttcover plate includes arc sections and straight plate part, reduces each single-unit pipe weld seam
Setting, simplified construction technology.
Further, the draft tube elbow single-unit tube section is that one end of arc is connected to the canalis spinalis of the hydraulic turbine, the other end
For being connected to tailrace outlet.
Further, multiple single-unit pipes successively weld.
Further, the straight plate part of each buttcover plate is welded in the straight plate part of another buttcover plate.
A kind of draft tube elbow manufacturing method, the draft tube elbow manufacturing method packet are provided according to another aspect of the present invention
It includes:
To rolling with trapezoidal plate tile, fishplate bar is obtained；
Four buttcover plates successively weld, and obtain single-unit pipe；
Multiple single-unit pipes successively weld, and obtain draft tube elbow.
Specifically, by rolling the thinking of rear directly group pair with trapezoidal plate tile, i.e., not traditionally by arc plate
It being fabricated separately with straight flange plate, trial turns off every piece of straight flange plate center of single-unit pipe, single-unit pipe is divided into four pieces, and
Every piece of tile middle section is arc plate, and both ends are straight section.
In order to improve working efficiency, reduces straight flange plate and arc plate is grouped, reduces longitudinal seam, attempted to use band
The tile of trapezoidal plate is rolled.So that upper roller of press brake is rolled line to positive round segmental arc one end first, is then adjusted when rolling
Tile, when adjustment, are adjusted according to the line that rolls of tile, finally roll according to circular arc situation to tangent position.
Further, described to rolling with trapezoidal plate tile, obtaining fishplate bar includes:
Ratio based on arc sections and straight plate part draws on band trapezoidal plate tile and rolls line；
By being based on rolling line to roller rolling machine, band trapezoidal plate tile is rolled, obtaining intermediate is arc sections, and two sides are straight
The single-unit pipe in plate portion.
Specifically, tile and trapezoidal plate are not provided with slot, are then rolled up in veneer reeling machine in same steel plate cutting
System, divides multistage to be rolled, is adjusted when rolling according to the line that rolls of tile, finally from arc plate while in addition
Integrated regulation is carried out in tangent position, finally forms, ensure that tile radian, while ensure that trapezoidal plate and arc plate interconnecting piece
Position is the outer dimension of tangent position, reduces weld seam.
Embodiment 1
Fig. 1 is the structural schematic diagram of the draft tube elbow of the embodiment of the present invention；Fig. 2 is that the structure of the single-unit pipe of the embodiment of the present invention is shown
It is intended to.
As Figure 1-Figure 2, which includes multiple single-unit pipes 1, and the shape difference of multiple single-unit pipes 1 successively connects
It connects, makes the draft tube elbow in bending, the single-unit tube section of one end draft tube elbow is circle, other end draft tube elbow
Single-unit pipe is chamfering rectangle；
Wherein, each single-unit pipe 1 includes four buttcover plates 2, and each buttcover plate 2 includes the arc sections in the middle part of the buttcover plate
3 and the straight plate parts 4 of 3 two sides of arc sections is set, the straight plate part 4 is integrally formed with the arc sections 3, four buttcover plates
2 are sequentially connected and make the single-unit pipe in closed form.
By practical proof, the method for coiling meets requirement, meets group to, requirement.
The application of the method for coiling, is effectively reduced the quantity of weld seam, at the same reduce tile group to, welding difficulty
And workload, while the work of CNC cutting is decreased, reduce gas flame cuttiug, reduces groove production, improve work
Material rate has saved cost, and is suitable for the arc plate with trapezoidal plate and rolls.
Performance analysis
By taking poplar room ditch water turbine set as an example, more traditional method for coiling is compared, weld seam can be reduced with the method that trapezoidal plate rolls
Quantity is reduced to 1 section, 4 weld seams by original 1 section, 12 weld seams, while by the quantity of tile group pair, by 12 original, 1 section
Tile is reduced to 1 section, 4 tiles, while decreasing power supply for construction cost, reduces lifting equipment, welding equipment, blanking are set
Standby use cost reduces the investment of personnel.4 sets of ells totally 44 section, reduces by 352 weld seams altogether, and tile quantity reduces 352
Tile is calculated by 500 yuan of each tile saving of every weld seam, altogether save the cost 352*500=176000 yuan.
The method for coiling has very wide application value, and safe and reliable, reduces intermediate link, that is, ensure that work
Phase, and cost has been saved, production efficiency is improved, is the good trial that tile rolls.Furthermore, it is possible to be applied to various bands
The tile of straight flange rolls.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of draft tube elbow, which is characterized in that the draft tube elbow includes multiple single-unit pipes, the shape differences of multiple single-unit pipes according to
Secondary connection, makes the draft tube elbow in bending, and the single-unit tube section of one end draft tube elbow is circle, other end tail water elbow
The single-unit pipe of pipe is chamfering rectangle；
Wherein, each single-unit pipe includes four buttcover plates, each buttcover plate include arc sections in the middle part of the buttcover plate and
The straight plate part of the arc sections two sides is set, and the straight plate part and the arc sections are integrally formed, and four buttcover plates successively connect
Connecing makes the single-unit pipe in closed form.
2. draft tube elbow according to claim 1, which is characterized in that the draft tube elbow single-unit tube section is the one of arc
End is connected to the canalis spinalis of the hydraulic turbine, and the other end is for being connected to tailrace outlet.
3. draft tube elbow according to claim 1, which is characterized in that multiple single-unit pipes successively weld.
4. draft tube elbow according to claim 1, which is characterized in that it is right that the straight plate part of each buttcover plate is welded in another
The straight plate part of fishplate bar.
5. a kind of draft tube elbow manufacturing method, which is characterized in that the draft tube elbow manufacturing method includes:
To rolling with trapezoidal plate tile, fishplate bar is obtained；
Four buttcover plates successively weld, and obtain single-unit pipe；
Multiple single-unit pipes successively weld, and obtain draft tube elbow.
6. draft tube elbow manufacturing method according to claim 5, which is characterized in that described to the progress with trapezoidal plate tile
It rolls, obtaining fishplate bar includes:
Ratio based on arc sections and straight plate part draws on band trapezoidal plate tile and rolls line；
By being based on rolling line to roller rolling machine, band trapezoidal plate tile is rolled, obtaining intermediate is arc sections, and two sides are straight
The single-unit pipe in plate portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811395304.7A CN109519611A (en) | 2018-11-22 | 2018-11-22 | A kind of draft tube elbow and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811395304.7A CN109519611A (en) | 2018-11-22 | 2018-11-22 | A kind of draft tube elbow and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109519611A true CN109519611A (en) | 2019-03-26 |
Family
ID=65778535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811395304.7A Pending CN109519611A (en) | 2018-11-22 | 2018-11-22 | A kind of draft tube elbow and manufacturing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109519611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111185726A (en) * | 2020-01-15 | 2020-05-22 | 中国十七冶集团有限公司 | Variable cross-section transition construction method for arc square tube |
| CN113319525A (en) * | 2021-05-18 | 2021-08-31 | 希斯芮烟囱科技(连云港)有限公司 | Manufacturing process of D-shaped sleeve type steel chimney inner barrel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202012438U (en) * | 2011-04-14 | 2011-10-19 | 福建南电股份有限公司 | Butt joint device for split surface of tail water elbow pipe of water turbine |
| CN102444529A (en) * | 2010-09-30 | 2012-05-09 | 顾建良 | Water drain device for water turbine |
| US20120125465A1 (en) * | 2010-11-22 | 2012-05-24 | Amerimas Home Products, Inc. | Low Profile Conduit Extension for Downspouts |
| CN202398666U (en) * | 2011-12-07 | 2012-08-29 | 济南重工股份有限公司 | Oval furnace tube rolling structure |
| US20150075664A1 (en) * | 2013-09-19 | 2015-03-19 | Timothy J. Cormier | Corrugated metal plate assembly system and method |
| CN205132926U (en) * | 2015-12-03 | 2016-04-06 | 中国水利水电第十六工程局有限公司 | Special well word hoist of hydroelectric set tail water ell |
-
2018
- 2018-11-22 CN CN201811395304.7A patent/CN109519611A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444529A (en) * | 2010-09-30 | 2012-05-09 | 顾建良 | Water drain device for water turbine |
| US20120125465A1 (en) * | 2010-11-22 | 2012-05-24 | Amerimas Home Products, Inc. | Low Profile Conduit Extension for Downspouts |
| CN202012438U (en) * | 2011-04-14 | 2011-10-19 | 福建南电股份有限公司 | Butt joint device for split surface of tail water elbow pipe of water turbine |
| CN202398666U (en) * | 2011-12-07 | 2012-08-29 | 济南重工股份有限公司 | Oval furnace tube rolling structure |
| US20150075664A1 (en) * | 2013-09-19 | 2015-03-19 | Timothy J. Cormier | Corrugated metal plate assembly system and method |
| CN205132926U (en) * | 2015-12-03 | 2016-04-06 | 中国水利水电第十六工程局有限公司 | Special well word hoist of hydroelectric set tail water ell |
Non-Patent Citations (2)
| Title |
|---|
| LINLIN8885: ""水电站肘管制造工艺措施"", 《百度文库》 * |
| 张权庭: ""云南梨园水电站站机组站机组尾水肘管制造质量控制"", 《珠江水运》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111185726A (en) * | 2020-01-15 | 2020-05-22 | 中国十七冶集团有限公司 | Variable cross-section transition construction method for arc square tube |
| CN113319525A (en) * | 2021-05-18 | 2021-08-31 | 希斯芮烟囱科技(连云港)有限公司 | Manufacturing process of D-shaped sleeve type steel chimney inner barrel |
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Application publication date: 20190326 |