US1736610A - Method of manufacturing high-pressure boilers - Google Patents
Method of manufacturing high-pressure boilers Download PDFInfo
- Publication number
- US1736610A US1736610A US19174A US1917425A US1736610A US 1736610 A US1736610 A US 1736610A US 19174 A US19174 A US 19174A US 1917425 A US1917425 A US 1917425A US 1736610 A US1736610 A US 1736610A
- Authority
- US
- United States
- Prior art keywords
- boiler
- shell
- end portions
- manufacturing high
- shrunk
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title description 9
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005242 forging Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49387—Boiler making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49863—Assembling or joining with prestressing of part
- Y10T29/49865—Assembling or joining with prestressing of part by temperature differential [e.g., shrink fit]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49936—Surface interlocking
Definitions
- My invention relates to high-pressure steam boilers; more especially it relates to a method of manufacturing them, and still more especially this method concerns the fastening of the frontal walls or boiler ends to and in the shell of the boiler.
- the invention is illustrated diagrammatically and by way of example in the accompanying drawing, in
- Figure 1 is an axial section through the upper half of an end of a high-pressure boiler constructed and manufactured according to this invention, the figure showing one phase of the method;
- Figure 1 is a similar view of the lower half of the same end of a high-pressureboiler after the second phase of my improved method has been completed;
- Figure 2 is a sectional view through a highpressure boiler showing a modification;
- FIG 3 shows another modification, all figures, as well as the phases or stages of the method, being fully described hereinafter.
- Fig. 1, 1 denotes the appropriately thick shell of the boiler which may be manufactured either by bending round a boiler plate and welding the joint, or by pressing a block into tubular shape.
- a re-inforced rim or end 2 is provided (the upper half of this ring being shown in Fig. 1). which is, however, flattened down later on, as'is shown in Figure 1.
- This is effected only after the boiler end 3 has been introduced into the shell, but prior thereto the end 2 is strongly heated so that it expands, the boiler end being, however, in-- serted in a cold state so that it is clamped fast in the shell by this latter itself, i. e. by its rim 2 when the rom cools down, contracts, and shrinks.
- the rim is flattened down mechanically by hammering, rolling, forging, or the like, in such a manner, that the material forming the rim, or, more precisely,
- the boiler end is provided, of course, with the necessary bores or passages and fittings prior to its insertion into the shell.
- a shrunk ring 4 (Fig. 1) may be shoved upon the end 2 of the shell or boiler after the deformed rim of the shell has completely cooled down.
- a part of the shrunk ring is shown still separate from the boiler; in Figure 1 that ring (indicated here only in dotted lines) is in its ultimate place.
- Fig. 2 shows the boiler, i. e. the end or part illustrated, in finished state.
- the several stages, or phases of manufacture, are practically the same as described with regard to Fig. 1.
- Another diiference with respect to Fig. 1 consists, however, in the feature that, besides the shrunk ring 4c, several similar rings 5 have been shoved also over and upon the shell 1.
- the-boiler end 3 is provided with a tubular extension 3' contacting closely with the shell.
- the close conv tact is due to, and maintained by, the shrunk rings, but also to the high internal pressure when the boiler is in operation.
- the undulations or parallel wave crests and wave troughs extending around the peripheral surfaces of the boiler ends may pass over into one another in such a way as to form a continuous thread like that of a screw.
- a method of manufacturing high pressure steam boilers consisting in heating the tions of the boiler shell to shrink onto the boiler ends, applying heat expanded bands over the shrunk end portions of the boiler shell, and causing said bands to shrink onto said end portions of the boiler shell.
- a method of manufacturing high pressure steam boilers consisting in upsetting the end portions of a boiler shell, heating the upset end portions of said boiler shell to expand the same, inserting the boiler ends in cold state into said heated end portions of the boiler shell, forging the upset heated end portions of the boiler shell about said boiler ends, causing the forged end portions of the boiler shell to shrink onto the boiler ends, applying heat expanded hands over the shrunk end portions of the boiler shell, and causing said bands to shrink onto said end portions of the boiler shell.
- a method of manufacturing high pressure steam boilers consisting in upsetting the end portions of a boiler shell, heating the up set end portions of said boiler shell, forming grooves upon the marginal surfaces of the boiler ends, inserting said boiler ends in cold state into the heated end portions of said boiler, forging the upset heated end portions of the boiler shell about said boiler ends and into the grooves thereof, causing the forged end portions of the boiler shell to shrink onto the boiler ends, applying heat expanded bands over the shrunk end portions of the boiler shell, and causing said bands to shrink onto said end portions of the boiler shell.
- a method of manufacturing high pressure steam boilers consisting in upsetting the end portions of a boiler shell, heating the upset end portions of said boiler shell, forming grooves upon the marginal surfaces of the boiler ends and providing the same with an extended lateral projection, inserting said oiler ends in cold state into said heated end portions of the boiler shell with its extended
Description
Nov. 19, 1929. s. LGFFLER 1,736,610
' METHOD OF MANUFACTURING HIGH PRESSURE BOILERS Filed March 28, 1925 Patented Nov. 19, 1929 UNITED STATES STEPHAN LorFLnR, or CHARLOTTENBURG, GERMANY METHOD OF MANUFACTURING HIGH-PRESSURE BOILERS Application filed March 28, 1925, Serial No. 19,174, and in Germany .April 11, 1924.
My invention relates to high-pressure steam boilers; more especially it relates to a method of manufacturing them, and still more especially this method concerns the fastening of the frontal walls or boiler ends to and in the shell of the boiler. The invention is illustrated diagrammatically and by way of example in the accompanying drawing, in
which Figure 1 is an axial section through the upper half of an end of a high-pressure boiler constructed and manufactured according to this invention, the figure showing one phase of the method; Figure 1 is a similar view of the lower half of the same end of a high-pressureboiler after the second phase of my improved method has been completed; Figure 2 is a sectional view through a highpressure boiler showing a modification; and
Figure 3 shows another modification, all figures, as well as the phases or stages of the method, being fully described hereinafter.
Referring to Fig. 1, 1 denotes the appropriately thick shell of the boiler which may be manufactured either by bending round a boiler plate and welding the joint, or by pressing a block into tubular shape. In either case a re-inforced rim or end 2 is provided (the upper half of this ring being shown in Fig. 1). which is, however, flattened down later on, as'is shown in Figure 1. This is effected only after the boiler end 3 has been introduced into the shell, but prior thereto the end 2 is strongly heated so that it expands, the boiler end being, however, in-- serted in a cold state so that it is clamped fast in the shell by this latter itself, i. e. by its rim 2 when the rom cools down, contracts, and shrinks. But prior to the cooling down, the contracting and the shrinking of the 40 rim, and immediately after the boiler end has been inserted, the rim is flattened down mechanically by hammering, rolling, forging, or the like, in such a manner, that the material forming the rim, or, more precisely,
5 the respective end of the shell 1, is deformed to the shape shown in Figure 1, there existing now an inner shoulder b and an outer shoulder a, the two shoulders holding the boiler end 3 very securely between them. This operation is carried through quickly enough that the material does not cool and shrink perceptibly during that time; only when the shoulders at and b have been formed, the shrinking proper ensues, whereby the boiler end 3 is secured to the shell 1 so firmly that the boiler is able to stand the highest pressures proposed of late.
The boiler end is provided, of course, with the necessary bores or passages and fittings prior to its insertion into the shell.
If desired, a shrunk ring 4 (Fig. 1) may be shoved upon the end 2 of the shell or boiler after the deformed rim of the shell has completely cooled down. In Fig. 1 a part of the shrunk ring is shown still separate from the boiler; in Figure 1 that ring (indicated here only in dotted lines) is in its ultimate place.
In the modification illustrated in Fig. 2 the circumferential surface of the boiler end is undulated in axial direction and the ma- 7 terial of the rim 2 is pressed into the troughs of the undulations whereby there is formed a plurality of shoulders a and b. Fig. 2 shows the boiler, i. e. the end or part illustrated, in finished state. The several stages, or phases of manufacture, are practically the same as described with regard to Fig. 1. Another diiference with respect to Fig. 1 consists, however, in the feature that, besides the shrunk ring 4c, several similar rings 5 have been shoved also over and upon the shell 1.
This is the case also in the other modification shown in Fig. 3 which differs from Fig.
2 chiefly bythe feature that the-boiler end 3 is provided with a tubular extension 3' contacting closely with the shell. The close conv tact is due to, and maintained by, the shrunk rings, but also to the high internal pressure when the boiler is in operation.
I wish it to be understood that I do not limit myself to the modifications shown in the drawings in which only a few examples have been illustrated. It will be obvious to every expert of the art to which this invention pertains that further modifications of the method, as well as of the product, the high-pressure steam boiler, are possible without departing from the gist of the invention.
To give an example: The undulations or parallel wave crests and wave troughs extending around the peripheral surfaces of the boiler ends may pass over into one another in such a way as to form a continuous thread like that of a screw.
I claim:
1. A method of manufacturing high pressure steam boilers consisting in heating the tions of the boiler shell to shrink onto the boiler ends, applying heat expanded bands over the shrunk end portions of the boiler shell, and causing said bands to shrink onto said end portions of the boiler shell.
In testimony whereof I have aflixed my signature.
STEPHAN LOFFLER.
end portions of a boiler shell to expand the same, inserting the boiler ends in cold state into said heated-end portions of the boiler shell, forging the heated end portions of the boiler shell about said boiler ends, causing the end portions of the boiler shell to shrink onto the boiler ends, applying heat expanded hands over the shrunk end portions of the boiler shell, and causing said bands to shrink onto saidend portions of the boiler shell.
2. A method of manufacturing high pressure steam boilers consisting in upsetting the end portions of a boiler shell, heating the upset end portions of said boiler shell to expand the same, inserting the boiler ends in cold state into said heated end portions of the boiler shell, forging the upset heated end portions of the boiler shell about said boiler ends, causing the forged end portions of the boiler shell to shrink onto the boiler ends, applying heat expanded hands over the shrunk end portions of the boiler shell, and causing said bands to shrink onto said end portions of the boiler shell.
3. A method of manufacturing high pressure steam boilers consisting in upsetting the end portions of a boiler shell, heating the up set end portions of said boiler shell, forming grooves upon the marginal surfaces of the boiler ends, inserting said boiler ends in cold state into the heated end portions of said boiler, forging the upset heated end portions of the boiler shell about said boiler ends and into the grooves thereof, causing the forged end portions of the boiler shell to shrink onto the boiler ends, applying heat expanded bands over the shrunk end portions of the boiler shell, and causing said bands to shrink onto said end portions of the boiler shell.
4. A method of manufacturing high pressure steam boilers consisting in upsetting the end portions of a boiler shell, heating the upset end portions of said boiler shell, forming grooves upon the marginal surfaces of the boiler ends and providing the same with an extended lateral projection, inserting said oiler ends in cold state into said heated end portions of the boiler shell with its extended
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1736610X | 1924-04-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1736610A true US1736610A (en) | 1929-11-19 |
Family
ID=7741193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US19174A Expired - Lifetime US1736610A (en) | 1924-04-11 | 1925-03-28 | Method of manufacturing high-pressure boilers |
Country Status (1)
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US (1) | US1736610A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2695182A (en) * | 1950-09-22 | 1954-11-23 | Horace T Potts Company | Jacketed pipe assembly |
US2754993A (en) * | 1953-10-23 | 1956-07-17 | Frank L Maker | Vessel head reinforcing ring and method of pre-stressing |
US2761205A (en) * | 1952-09-23 | 1956-09-04 | Schoeller Bleckmann Stahlwerke | Method of hot working a screwed drill pipe joint |
US2787481A (en) * | 1952-08-20 | 1957-04-02 | Hydrocarbon Research Inc | Transition pipe coupling |
US2867036A (en) * | 1950-01-20 | 1959-01-06 | Walther & Compagnie A G | Method for welding tube nipples |
EP0030119A2 (en) * | 1979-11-28 | 1981-06-10 | RAYCHEM CORPORATION (a California corporation) | Device and method for coupling pipes |
US6117329A (en) * | 1999-03-25 | 2000-09-12 | Dyax Corporation | Chromatography cartridge end cap fixation |
US6783673B2 (en) | 2002-08-23 | 2004-08-31 | Biotage, Inc. | Composite chromatography column |
US20100126999A1 (en) * | 2008-11-21 | 2010-05-27 | Gm Global Technology Operations, Inc. | High pressure tank and method thereof |
-
1925
- 1925-03-28 US US19174A patent/US1736610A/en not_active Expired - Lifetime
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2867036A (en) * | 1950-01-20 | 1959-01-06 | Walther & Compagnie A G | Method for welding tube nipples |
US2695182A (en) * | 1950-09-22 | 1954-11-23 | Horace T Potts Company | Jacketed pipe assembly |
US2787481A (en) * | 1952-08-20 | 1957-04-02 | Hydrocarbon Research Inc | Transition pipe coupling |
US2761205A (en) * | 1952-09-23 | 1956-09-04 | Schoeller Bleckmann Stahlwerke | Method of hot working a screwed drill pipe joint |
US2754993A (en) * | 1953-10-23 | 1956-07-17 | Frank L Maker | Vessel head reinforcing ring and method of pre-stressing |
EP0030119A3 (en) * | 1979-11-28 | 1982-01-13 | Raychem Corporation | Device and method for coupling pipes |
EP0030119A2 (en) * | 1979-11-28 | 1981-06-10 | RAYCHEM CORPORATION (a California corporation) | Device and method for coupling pipes |
US6117329A (en) * | 1999-03-25 | 2000-09-12 | Dyax Corporation | Chromatography cartridge end cap fixation |
US6398953B1 (en) | 1999-03-25 | 2002-06-04 | Dyax Corporation | Chromatography cartridge end cap fixation |
US6783673B2 (en) | 2002-08-23 | 2004-08-31 | Biotage, Inc. | Composite chromatography column |
US20100126999A1 (en) * | 2008-11-21 | 2010-05-27 | Gm Global Technology Operations, Inc. | High pressure tank and method thereof |
US8091203B2 (en) * | 2008-11-21 | 2012-01-10 | GM Global Technology Operations LLC | High pressure tank and method thereof |
CN101780632B (en) * | 2008-11-21 | 2013-07-24 | 通用汽车环球科技运作公司 | High pressure tank and method thereof |
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