CN109227043B - Manufacturing process of elliptical seal head lining - Google Patents
Manufacturing process of elliptical seal head lining Download PDFInfo
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- CN109227043B CN109227043B CN201811125233.9A CN201811125233A CN109227043B CN 109227043 B CN109227043 B CN 109227043B CN 201811125233 A CN201811125233 A CN 201811125233A CN 109227043 B CN109227043 B CN 109227043B
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- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
A manufacturing process of an elliptical head lining comprises the following steps: s1, manufacturing a lining pot cover: s11, equally dividing and marking N parts of the inner surface of the end socket, S12, drawing an outer edge trajectory line of the lining pot cover on the inner surface of the end socket by using a ground gauge, S13, measuring the radian size and the width size L of an equally divided area, S14, manufacturing 1 watermelon petal lining pot cover sample, S15, manufacturing the rest N-1 watermelon petal lining pot cover samples, S16, assembling and welding the N equally divided watermelon petal lining pot cover samples, S2, manufacturing a lining cone, S3, manufacturing a lining cylinder body and S4, assembling an oval end socket lining. The manufacturing process of the elliptical seal head lining is formed by rolling by a plate rolling machine, is not limited by the diameter of the seal head, is convenient to manufacture, accelerates the progress of the construction period, saves the cost, has high assembly precision, plays a role in preventing abrasion to the pressure vessel, and effectively prolongs the service life of the pressure vessel.
Description
Technical Field
The invention relates to a manufacturing process of a metallurgical pressure vessel lining, in particular to a manufacturing process of an elliptical seal head lining.
Background
In a multistage heat exchange and reaction pressure vessel used in the metallurgical industry, materials continuously enter and exit to repeatedly scour an equipment body, so that the equipment is seriously abraded, and the normal design life of the pressure vessel is influenced; in order to reduce the erosion and wear of the material to the equipment body, a method of adding an anti-wear head liner (also called an elliptical head liner) inside the head sealing section 4 of the pressure vessel (including a bottom head 41 and an upper straight cylinder 42, the height of the straight cylinder is generally 25mm, 40 mm or 50mm, as shown in fig. 2-4) is generally adopted, so as to ensure the normal operation and the service cycle of the equipment body.
The elliptical head liner consists of a liner pot cover, a liner cone and a liner cylinder, wherein the liner pot cover is completely attached to the inner surface of the bottom of the head 41 of the head section 4 of the pressure container, and the liner cone is welded on the liner pot cover, is positioned at the upper part of the head 41 and is not attached to the head (so that the whole elliptical head liner can be replaced); the lining cylinder is welded on the lining cone, the lower part of the lining cylinder is attached to the inner surface of the straight cylinder 42, the upper part of the lining cylinder is higher than the straight cylinder, namely the diameter of the small end of the lining cone is consistent with the diameter R1 of the lining pot cover, the diameter of the large end of the lining cone is consistent with the diameter R2 of the lining cylinder (the inner surface of the straight cylinder of the pressure vessel head sealing section), and the height H2 of the lining cone is the height H of the curved surface of the pressure vessel head sealing section minus the height H1 of the curved surface of the lining pot cover.
Wherein the shape of inside lining pot cover is more complicated, and its orthographic projection is circular, and its curved surface radian is the elliptic radian, and the method of traditional preparation elliptic head inside lining generally adopts:
1. punching and forming;
2. watermelon petals are adopted for slicing and splicing.
The above method has problems that:
1. on one hand, the punch forming technology is limited by using conditions, particularly for some large-scale chemical smelting equipment, the required end socket is large in size, common production equipment cannot produce the end socket with the large size, and the end socket is relatively difficult to manufacture; on the other hand, the stamping forming method has high cost, long delivery period and low assembly precision;
2. the watermelon petal type slicing splicing method needs to be carried out cutting debugging and welding assembly in the end socket one by one, so that the splicing and welding are very difficult, the construction progress is very slow, and the production progress and the delivery period are seriously influenced.
Disclosure of Invention
The invention aims to provide a process for manufacturing an elliptical head lining, which overcomes the defects of the prior art.
The technical scheme adopted by the invention is as follows:
a manufacturing process of an elliptical head lining comprises the following steps:
s1, manufacturing a lining pot cover:
s11, equally dividing and marking N inner surfaces of the end sockets to obtain N equally divided areas;
s12, spot-welding a round steel bar with the height H1 equal to the curved surface height of the lining pot cover at the center of the inner surface of the end socket, drawing an outer edge trajectory of the lining pot cover on the inner surface of the end socket by using a ground rule with the center point of the round steel bar as the size according to the opening diameter R1 of the lining pot cover, wherein the outer edge trajectory is an edge line of the lining pot cover coincident with the inner surface of the end socket, and taking down the round steel bar;
s13, measuring the radian size and width size L of the bisected region:
s131. measuring practically the radian size of the halved area every interval 1/16 lining pot cover opening diameter R1 along the radial direction,
s132, actually measuring the width L of the equally divided area every 50mm along the longitudinal direction;
s14, manufacturing 1 watermelon petal inner liner pot cover sample:
s141, lofting and blanking:
lofting and blanking 1 watermelon flap lining pot cover blank which is slightly larger than the width L of an equal division area, wherein a plurality of straight seams are arranged on the curved surface of the watermelon flap lining pot cover blank along the direction of an equal division line, and the lengths of the straight seams are all 300 mm;
s142, roll forming and cutting allowance:
taking the radian size and the width size L of the middle partition area in the step S13 as the radian size and the width size L of the watermelon petal lining pot cover blank, firstly rolling and molding the watermelon petal lining pot cover blank by using a plate rolling machine, and then cutting the balance of the watermelon petal lining pot cover blank to obtain 1 watermelon petal lining pot cover sample;
s15, preparing other N-1 watermelon petal inner liner pot cover samples:
measuring the radian size and the width size of the pot cover sample with the watermelon petal lining prepared in the step S142, setting out a drawing for numerical control programming and cutting allowance by taking the radian size and the width size of the sample as the standard, blanking the rest N-1 watermelon petal lining pot cover blanks in batches, and performing roll forming on a plate bending machine to prepare N-1 watermelon petal lining pot cover samples;
s16, assembling and welding N equal watermelon petal inner liner pot cover samples:
assembling and welding the N equant watermelon petal inner liner pot cover samples prepared in the steps S14 and S15 with the inner surface of the end enclosure as a moulding bed, wherein the adjacent butt joint interfaces of the 2 equant watermelon petal inner liner pot cover samples are assembled and welded to obtain 1 inner liner pot cover;
s2, manufacturing a lining cone:
s21, lofting and blanking:
setting out 1 piece of plate material with the small end side length slightly larger than the opening perimeter pi R1 of the lining pot cover, the large end side length slightly larger than the opening perimeter pi R2 of the inner surface of the straight cylinder and the height slightly larger than the height H2 of the lining cone, drawing, performing numerical control programming and cutting allowance;
s22, roll forming:
rolling the sheet material on a plate rolling machine into a cone shape, and welding butt joints to obtain 1 lining cone;
s3, manufacturing a lining cylinder:
s31, lofting and blanking:
setting out 1 piece of plate material with the side length dimension of two ends slightly larger than the opening circumference pi R2 of the inner surface of the straight cylinder and the height slightly larger than the height H3 of the lining cylinder, drawing, carrying out numerical control programming and cutting allowance;
s31, roll forming:
rolling the sheet material into a cylinder shape on a plate rolling machine, and welding butt joints to obtain 1 lining cylinder;
s4, assembling the elliptical head lining:
s41, assembling a lining pot cover and a lining cone on a steel platform of a container workshop, and performing spot welding reinforcement;
s42, welding a lining cylinder on the lining cone to obtain 1 elliptical end socket lining;
n is an arbitrary integer between 8 and 16.
Due to the adoption of the technical scheme, the manufacturing process of the elliptical head lining has the following beneficial effects:
1. the manufacturing process of the elliptical seal head lining adopts a plate rolling machine for roll forming, does not need profiling equipment and a profiling die, is not limited by the diameter of the seal head, and is convenient to manufacture; and because the rolling forming is carried out by adopting the plate bending machine, no clamping fixture is required to be assembled, the rolling forming cost is low, the delivery period is short, meanwhile, the sizes of the watermelon petal lining pot cover samples rolled by the plate bending machine are the same for each piece, so that the blanking precision is ensured, and finally, the seal head is taken as a clamping mould and is directly welded and assembled in the seal head, so that the assembly precision is high.
2. Because the thickness of the steel plate as the blank is different and the diameter of the radial section of the liner is different, the bending and extending sizes of the steel plate are also different, in order to more accurately control the manufacturing precision, the manufacturing process of the elliptical head liner of the invention firstly prepares 1 watermelon petal liner pot cover sample, then takes the size of the watermelon petal liner pot cover sample as the standard, lays out a picture to carry out numerical control programming, and carries out batch blanking on the rest N-1 equant watermelon petal liner pot cover blanks, and carries out roll forming on a plate rolling machine to prepare N-1 watermelon petal liner pot cover samples, and finally assembles and welds the N watermelon petal liner pot cover samples in the head to obtain 1 complete elliptical head liner pot cover; need not one and carry out the cutting debugging in the head, effectively reduce the construction degree of difficulty of raw and other materials unloading, on-the-spot equipment, simultaneously, the unloading in batches reduces the required time of the lining spare preparation installation in the oval head for the time limit for a project progress reduces the cost of labor.
3. The invention relates to a watermelon petal lining pot cover, wherein a curved surface of the watermelon petal lining pot cover is provided with a plurality of straight seams along the direction of a bisector, the length of the plurality of straight seams is 300mm, after N watermelon petal lining pot cover samples are assembled and welded in a sealing head, the plurality of straight seams are beaten by a tool, so that the whole lining pot cover is better attached to the inner surface of the sealing head, and finally the plurality of straight seams are welded.
4. By adopting the manufacturing process of the elliptical head liner, firstly, a liner pot cover, a liner cone and a liner cylinder are manufactured, then, the liner pot cover and the liner cone are assembled on a steel platform of a container workshop and are reinforced by spot welding, and finally, the liner cylinder is welded on the liner cone, so that 1 elliptical head liner is obtained; the whole lining of the elliptical seal head is arranged on the inner surface of the elliptical seal head, so that the pressure vessel is protected from abrasion, and the service life of the pressure vessel is effectively prolonged.
The technical features of the elliptical head liner manufacturing process of the present invention will be further described with reference to the accompanying drawings and examples.
Drawings
FIG. 1: the structure of the elliptical head liner of the present invention is schematically shown,
FIGS. 2 to 4: the structure schematic diagram of the pressure vessel head sealing section is as follows:
fig. 2 is a front view, fig. 3 is a plan view of fig. 2 (8 is an equally-divided line, with a round steel bar spot-welded), and fig. 4 is an enlarged view of a portion a of fig. 2;
FIG. 5 is a schematic structural view of a watermelon petal inner liner pot cover blank;
FIG. 6 is a structural diagram of a pot cover sample with watermelon petal inner liner;
FIG. 7 is an assembly view of an elliptical head liner and a head segment of a pressure vessel.
In the figure:
1-lining pot cover, 11 a-watermelon petal lining pot cover blank, 11 b-watermelon petal lining pot cover sample, 101-straight seam, 2-lining cone, 3-lining cylinder, 4-pressure container head sealing section, 41-end sealing, 401-equal division area, 42-straight cylinder, 5-round steel bar and QGL-cutting amount.
Detailed Description
Example (b):
the manufacturing process of the elliptical head lining is characterized by comprising the following steps: the method comprises the following steps:
s1, manufacturing a lining pot cover 1:
s11, equally dividing the N inner surfaces of the end sockets 41 into lines to obtain N equally divided regions 401;
s12, spot-welding a round steel bar 5 with the height H1 equal to the curved surface height of the lining pot cover at the center of the inner surface of the end socket, drawing an outer edge trajectory of the lining pot cover on the inner surface of the end socket by using the center point of the round steel bar and the opening diameter R1 of the lining pot cover as a size, wherein the outer edge trajectory is an edge line of the lining pot cover coincident with the inner surface of the end socket, and taking down the round steel bar;
s13, measure the arc size and width size L of the aliquot region 401:
s131. the diameter R1 of the opening of the lining pot cover at intervals 1/16 in the radial direction actually measures the radian size of the equal-dividing area 401,
s132, actually measuring the width L of the equal division area 401 at intervals of 50mm along the longitudinal direction;
s14, manufacturing a pot cover sample 11b with 1 watermelon petal lining:
s141, lofting and blanking:
lofting and blanking 1 watermelon flap lining pot cover blank 11a slightly larger than the width L of an equal division area 401, wherein 3 straight seams 101 are arranged on the curved surface of the watermelon flap lining pot cover blank 11a along the direction of an equal division line, and the length of each of the 3 straight seams is 300 mm;
s142, roll forming and cutting allowance:
taking the radian size and the width size L of the middle partition area 401 in the step S13 as the radian size and the width size L of the watermelon petal lining pot cover blank 11a, firstly, rolling and forming the watermelon petal lining pot cover blank 11a by using a plate rolling machine, and then, cutting the allowance of the watermelon petal lining pot cover blank 11a to obtain 1 watermelon petal lining pot cover sample 11 b;
s15, preparing other N-1 watermelon petal inner liner pot cover samples:
measuring the radian size and the width size of the watermelon petal lining pot cover sample 11b prepared in the step S142, taking the radian size and the width size of the sample as the standard, lofting and drawing for numerical control programming and cutting allowance, blanking the rest N-1 watermelon petal lining pot cover blanks in batches, and performing roll forming on a plate bending machine to prepare N-1 watermelon petal lining pot cover samples;
s16, assembling and welding N equal watermelon petal inner liner pot cover samples:
assembling and welding the N equant watermelon petal inner liner pot cover samples prepared in the steps S14 and S15 with the inner surface of the end enclosure as a moulding bed, wherein the adjacent butt joint interfaces of the 2 equant watermelon petal inner liner pot cover samples are assembled and welded to obtain 1 inner liner pot cover 1;
s2, manufacturing a lining cone 2:
s21, lofting and blanking:
setting out 1 piece of plate material with the small end side length slightly larger than the opening perimeter pi R1 of the lining pot cover, the large end side length slightly larger than the opening perimeter pi R2 of the inner surface of the straight cylinder 42 and the height slightly larger than the height H2 of the lining cone, drawing, performing numerical control programming and cutting allowance;
s22, roll forming:
rolling the sheet material on a plate rolling machine into a cone shape, and welding butt joints to obtain 1 lining cone;
s3, manufacturing the lining cylinder 3:
s31, lofting and blanking:
setting out 1 piece of plate material with the side length dimension of two ends slightly larger than the opening circumference pi R2 of the inner surface of the straight cylinder 42 and the height slightly larger than the height H3 of the lining cylinder body, drawing, carrying out numerical control programming and cutting allowance;
s31, roll forming:
rolling the sheet material into a cylinder shape on a plate rolling machine, and welding butt joints to obtain 1 lining cylinder;
s4, assembling the elliptical head lining:
s41, assembling a lining pot cover and a lining cone on a steel platform of a container workshop, and performing spot welding reinforcement;
s42, welding a lining cylinder on the lining cone to obtain 1 elliptical end socket lining;
n is an arbitrary integer between 8 and 16.
The plate for manufacturing the lining cone and the lining barrel can be formed by welding a plurality of small-sized plates.
The height H3 of the lining cylinder is generally 20-25 times of the height of the straight cylinder 42 at the upper part of the head sealing section 4 of the pressure vessel, and the height of the lining cylinder can be determined according to actual needs.
The invention relates to a manufacturing process principle of an elliptical seal head lining:
the invention relates to an elliptical end socket lining manufacturing process, which adopts a plate rolling machine for roll forming, does not need profiling equipment and a profiling die, is not limited by the diameter of an end socket, is convenient to manufacture, firstly manufactures 1 required watermelon petal lining pot cover sample, takes the size of the watermelon petal lining pot cover sample as the standard for improving the manufacturing precision, lays out a layout for numerical control programming, batches and blanks of the rest N-1 equant watermelon petal lining pot covers, rolls and forms on a plate rolling machine to manufacture N-1 required watermelon petal lining pot cover samples, finally assembles and welds N watermelon petal lining pot cover samples in the end socket to obtain 1 complete lining pot cover, arranges the lining pot cover in an elliptical end socket, enables the lining pot cover to be attached to the inner surface of the bottom of the elliptical end socket, uses a tool to beat a straight seam, enables the whole lining pot cover to be better attached to the inner surface of the end socket, and finally connects the straight seam, in the period, the cutting and debugging are not needed to be carried out in the end socket one by one, so that the construction difficulty of raw material blanking and field assembly is effectively reduced, meanwhile, the time required by manufacturing and installing the lining part of the elliptical end socket is reduced, the construction period progress is accelerated, and the labor cost is reduced; and then welding the manufactured lining cone on the lining pot cover, and welding the lining cylinder on the lining cone to obtain 1 elliptical end socket lining, which plays a role in preventing abrasion on the pressure vessel and effectively prolongs the service life of the pressure vessel.
Claims (1)
1. The manufacturing process of the elliptical head lining is characterized by comprising the following steps: the method comprises the following steps:
s1, manufacturing a lining pot cover (1):
s11, equally dividing and marking N inner surfaces of the end sockets (41) to obtain N equally divided regions (401);
s12, spot-welding a round steel bar (5) with the height H1 equal to the curved surface of the lining pot cover at the center of the inner surface of the end socket, drawing an outer edge trajectory of the lining pot cover on the inner surface of the end socket by using the center point of the round steel bar and the opening diameter R1 of the lining pot cover as a size, wherein the outer edge trajectory is an edge line of the lining pot cover coincident with the inner surface of the end socket, and taking down the round steel bar;
s13, measuring radian size and width size L of the equal division area (401):
s131. measuring practically the radian size of the bisecting region (401) every interval 1/16 lining pot lid opening diameter R1 in the radial direction,
s132, actually measuring the width L of the equal division area (401) at intervals of 50mm along the longitudinal direction;
s14, preparing 1 watermelon petal inner liner pot cover sample (11 b):
s141, lofting and blanking:
lofting and blanking 1 watermelon flap lining pot cover blank (11 a) which is slightly larger than the width L of an equal division area (401), wherein a plurality of straight seams (101) are arranged on the curved surface of the watermelon flap lining pot cover blank (11 a) along the direction of an equal division line, and the lengths of the straight seams are all 300 mm;
s142, roll forming and cutting allowance:
taking the radian size and the width size L of the middle partition area (401) in the step S13 as the radian size and the width size L of the watermelon petal lining pot cover blank (11 a), firstly rolling and forming the watermelon petal lining pot cover blank (11 a) by using a plate rolling machine, and then cutting the allowance of the watermelon petal lining pot cover blank (11 a) to prepare 1 watermelon petal lining pot cover sample (11 b);
s15, preparing other N-1 watermelon petal inner liner pot cover samples:
measuring the radian size and the width size of the watermelon petal lining pot cover sample (11 b) prepared in the step S142, taking the radian size and the width size of the sample as the standard, lofting and drawing, performing numerical control programming and cutting allowance, blanking the rest N-1 watermelon petal lining pot cover blanks in batches, and performing roll forming on a plate bending machine to prepare N-1 watermelon petal lining pot cover samples;
s16, assembling and welding N equal watermelon petal inner liner pot cover samples:
assembling and welding the N equant watermelon petal inner lining pot cover samples prepared in the steps S14 and S15 with the inner surface of the end enclosure as a moulding bed of a butt joint interface of 2 equant watermelon petal inner lining pot cover samples to obtain 1 inner lining pot cover (1);
s2, manufacturing a lining cone (2):
s21, lofting and blanking:
setting out 1 piece of plate material with the length dimension of the small end slightly larger than the perimeter Pi R1 of the opening of the inner lining pot cover, the length dimension of the large end slightly larger than the perimeter Pi R2 of the opening of the inner surface of the straight cylinder (42) and the height slightly larger than the height H2 of the lining cone, drawing and carrying out numerical control programming and cutting allowance;
s22, roll forming:
rolling the sheet material on a plate rolling machine into a cone shape, and welding butt joints to obtain 1 lining cone;
s3, manufacturing a lining cylinder (3):
s31, lofting and blanking:
setting out 1 piece of plate material with the side length dimension of two ends slightly larger than the opening circumference pi R2 of the inner surface of the straight cylinder (42) and the height slightly larger than the height H3 of the lining cylinder body, drawing, performing numerical control programming and cutting allowance;
s31, roll forming:
rolling the sheet material into a cylinder shape on a plate rolling machine, and welding butt joints to obtain 1 lining cylinder;
s4, assembling the elliptical head lining:
s41, assembling a lining pot cover and a lining cone on a steel platform of a container workshop, and performing spot welding reinforcement;
s42, welding a lining cylinder on the lining cone to obtain 1 elliptical end socket lining;
n is an arbitrary integer between 8 and 16.
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| CN201811125233.9A CN109227043B (en) | 2018-09-26 | 2018-09-26 | Manufacturing process of elliptical seal head lining |
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| CN201811125233.9A CN109227043B (en) | 2018-09-26 | 2018-09-26 | Manufacturing process of elliptical seal head lining |
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| CN110102984A (en) * | 2019-06-04 | 2019-08-09 | 宜兴华威封头有限公司 | A kind of cone coiled forming technology of dome head |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4252244A (en) * | 1979-05-18 | 1981-02-24 | Nooter Corporation | Layered pressure vessel head with machined surfaces |
| CN2220359Y (en) * | 1994-03-27 | 1996-02-21 | 熊世纬 | Four-roller rolling pressed ball shape container lamella and spherical annulus forming machine |
| US7596940B2 (en) * | 2005-03-22 | 2009-10-06 | Pratt & Whitney Rocketdyne, Inc. | Rocket engine nozzle and method of fabricating a rocket engine nozzle using pressure brazing |
| CN1899756A (en) * | 2006-06-30 | 2007-01-24 | 河南科隆石化装备有限公司 | Method for processing seal head |
| CN102700870B (en) * | 2011-10-11 | 2014-05-07 | 国家核电技术有限公司 | Seal head module, large container and method for manufacturing seal head module and large container |
| CN202812767U (en) * | 2012-08-01 | 2013-03-20 | 河南神州重型封头有限公司 | Very-large-diameter torispherical head |
| CN103350328B (en) * | 2013-06-28 | 2016-03-30 | 宜兴华威封头有限公司 | A kind of end socket partition machining manufacture craft |
| CN106838307B (en) * | 2017-01-05 | 2018-05-11 | 安徽心连心重型封头有限公司 | A kind of eighth ball aluminum corner brace alloy end enclosure and production method |
| CN107931965A (en) * | 2017-10-23 | 2018-04-20 | 宜兴市九洲封头锻造有限公司 | A kind of dual phase steel end socket divides valve moulding process |
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