CN109958877A - Skirt and bottom (head) connection structure - Google Patents
Skirt and bottom (head) connection structure Download PDFInfo
- Publication number
- CN109958877A CN109958877A CN201910242812.XA CN201910242812A CN109958877A CN 109958877 A CN109958877 A CN 109958877A CN 201910242812 A CN201910242812 A CN 201910242812A CN 109958877 A CN109958877 A CN 109958877A
- Authority
- CN
- China
- Prior art keywords
- skirt
- connecting elements
- end socket
- head
- connection structure
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
Abstract
A kind of skirt and bottom (head) connection structure.A kind of skirt and bottom (head) connection structure, composition include top weld seam (1), connecting elements (2), skirt cylinder/changeover portion (3), lower part weld seam (4), end socket (5), girth joint (6), end socket end clout (7).Of the invention is compact-sized, weld seam section size is small, required weld metal is only 30% or so of traditional built-up welding pattern, manufacturing method is simpler, manufacturing cycle is short, using processing clout, at low cost and reliable in quality, largely solves the disadvantages of manufacturing process is complicated, wlding consumption is more, welding workload is big, the period is long, at high cost compared with prior art.It originally is that invention is applied to skirt and bottom (head) connection structure.
Description
Technical field:
The present invention relates to a kind of skirts and bottom (head) connection structure.
Background technique:
With being constantly progressive for China's Chemical Engineering Technology, bearing device also keeps the large-scale development, higher temperature, higher pressure
Power, bigger diameter, so that the wall thickness of pressure vessel and weight are also bigger, the connection reliability of skirt and bottom (head) to container
More stringent requirements are proposed.In tower standard, for more important thick-walled vessel, the connection of skirt and end socket is recommended to use
H-shaped forging or built-up welding pattern, this is also the domestic most commonly used two kinds of skirts of large container and end socket type of attachment at present, but this
There is certain disadvantage in two kinds of patterns.
For H-shaped forging pattern.Such structure using more, goes out h using cyclic annular forging process in hydrogenator
The connector of shape, upper section and cylinder butt welding, lower end one side and bottom (head) butt welding, one end and skirt butt welding.This knot
Structure reliability highest, but in order to process H-shaped forging, needs to take biggish annular forging piece, at the same in order to balance with cylinder, end socket
With the welding of skirt, forging height is often very big, and whole stock utilization is extremely low, generally 25% ~ 40%, and amount of machining
Huge, since annular forging piece is very big, only large forgings factory could be produced, and the order cycle time is also longer, and cost is high.
For built-up welding pattern.Such structure has specific regulation in tower standard, it is necessary first to which one identical as end socket
The 6mm thickness circular ring shape supporting plate of material, and it is integrally welded with end socket and skirt, and then the back side built-up welding 20mm of supporting plate is thick again
Overlay cladding, and its knuckle with skirt and end socket overturns end socket after the completion of the built-up welding of lower part, and shovel falls supporting plate, light of polishing
After sliding and detecting qualification, then carry out top built-up welding.The shortcomings that this structure, mainly built-up welding section was big, needed a large amount of wlding, welded
Heavy workload is connect, defect is easy to produce in weld deposit process, therefore many designing institutees carry out one layer of the every built-up welding of such structural requirement
As soon as time MT detection, this considerably increases the manufacturing cycle of product, and the manufacture of general such structure needs 2 ~ 3 months periods,
Overall cost is also very high.
Summary of the invention:
The object of the present invention is to provide a kind of skirts and bottom (head) connection structure, and the inventive structure is compact, and weld seam section size is small,
Required weld metal is only 30% or so of traditional built-up welding pattern, and manufacturing method is simpler, and the manufacturing cycle is short, and available
Clout is processed, at low cost and reliable in quality largely solves manufacturing process's complexity, wlding consumption compared with prior art
More, the disadvantages of welding workload is big, the period is long, at high cost.
Above-mentioned purpose is realized by following technical scheme:
Skirt and bottom (head) connection structure, composition include: top weld seam, connecting elements, skirt cylinder/changeover portion, lower part weldering
Seam, end socket, girth joint, end socket end clout, the connecting elements is identical as the end socket material, and shape is revolution knot
Structure, cross sectional shape are connected by upper groove, lower groove, outer inclined-plane, outer straight flange, circumferential groove, straight section, fillet and bottom plane
One, wherein the welding point of the connecting elements and the end socket is by the top weld seam and the lower part weld seam
Two parts composition, the connecting elements and skirt cylinder/changeover portion welding point are the boxing of complete penetraction and fusion in welding pattern
Seam, and the connecting elements can be processed by the end socket end clout.
The skirt and bottom (head) connection structure, the upper groove, lower groove junction process root face.
The skirt and bottom (head) connection structure, the connecting elements bottom and the skirt cylinder/changeover portion
Junction is equipped with the straight section, the circumferential groove is machined with thereon, between the straight section and the bottom plane
There is the round-corner transition.
The skirt and bottom (head) connection structure, the outer straight flange of the connecting elements and the skirt cylinder/mistake
Cross that section overall diameter is consistent, the outer straight flange is connect by the outer inclined-plane with the upper groove, the outer inclined-plane and
Angle between the outer straight flange generally takes 10~25 ° according to true form.
Beneficial effects of the present invention:
1. the present invention is divided into top weld seam and lower part due to having used the connecting elements with end socket same material, and by attachment weld
Weld seam, required weld metal are only 30% or so of traditional built-up welding pattern, have greatly saved wlding and manufacturing cycle.
Connecting elements of the present invention and end socket first weld lower part weld seam, since connecting elements is compact-sized, to welding and detection
Provide space broad enough.After the completion of the weld seam of lower part, end socket is overturn, carries out the welding of top weld seam after back chipping again.
For the present invention compared with traditional built-up welding pattern, this structure does not need annular liner plate, and a large amount of built-up welding are not present, reduce weldering
It connects and works with non-destructive testing, improve work situation, and welding quality is easier to ensure that compared with built-up welding pattern.
Connecting elements lower part of the present invention is equipped with straight section, can be after the completion of connecting elements and end socket weld, then is attached structure
Part and the welding of skirt cylinder/changeover portion, and butting grooves are welded as, be conducive to the guarantee of welding quality.
Upper groove, the angle of lower groove and length can be real according to end socket diameter and skirt and end socket in connecting elements of the present invention
Border link position and the actual welding technique adjustment of manufactory, upper groove, lower groove junction can process root face as needed,
Applicability is wide.
End socket end clout when seal head forming can be used in connecting elements of the present invention is processed into, and clout is efficiently used.Such as
It is less according to manufacturing experience end socket end clout, it can guarantee connecting elements by way of suitably increasing end cover blank size
It can be processed by end socket end clout.
Detailed description of the invention:
Attached drawing 1 is structural schematic diagram of the invention.
Attached drawing 2 is connecting elements schematic diagram of the invention.
Attached drawing 3 is connecting elements and end socket end clout schematic diagram of the invention.
Specific embodiment:
Embodiment 1:
The skirt and bottom (head) connection structure, it is revolving structure, section shape that connecting elements (2), which is with end socket same material,
Shape by upper groove (8), lower groove (9), outer inclined-plane (10), outer straight flange (11), circumferential groove (12), straight section (13), fillet (14),
Bottom plane (15) is connected, as shown in Fig. 2.It can be machined by end socket end clout (7) and is made, such as attached drawing 3
It is shown.
Embodiment 2:
According to skirt described in embodiment 1 and bottom (head) connection structure, the upper groove of (8), lower groove (9) junction can be according to need
Root face is processed, connecting elements (2) bottom and skirt cylinder/changeover portion (3) junction are equipped with straight section (13), and processing is circumferential thereon
Groove (12), there is fillet (14) transition between straight section (13) and bottom plane (15), the outer straight flange (11) of connecting elements (2) with
Skirt cylinder/changeover portion (3) overall diameter is consistent, and outer straight flange (11) is connect by outer inclined-plane (10) with upper groove (8), outer inclined-plane
(10) angle between outer straight flange (11) generally takes 10~25 ° according to true form.
Embodiment 3:
End socket (5) are inverted first, connecting elements (2) is placed on end socket (5), then weld lower part weld seam (4), due to connection
Component (2) is compact-sized, and welding and detection have space broad enough to realize, advantageously ensures that welding quality.Lower part weldering
After the completion of stitching (4), end socket (5) are overturn, carry out the welding of top weld seam (1) after back chipping again.It carries out when the welding is completed corresponding
Non-destructive testing.
After connecting elements (2) and end socket (5) welding is completed and detects qualification, then it is attached component (2) and skirt cylinder
The welding and non-destructive testing of body/changeover portion (3).
Embodiment 4:
It is heat-treated accordingly in entire welding process.
Claims (4)
1. a kind of skirt and bottom (head) connection structure, composition include: top weld seam, connecting elements, skirt cylinder/changeover portion,
Lower part weld seam, end socket, girth joint, end socket end clout, it is characterized in that: the connecting elements and the end socket material phase
Together, shape is revolving structure, and cross sectional shape is by upper groove, lower groove, outer inclined-plane, outer straight flange, circumferential groove, straight section, fillet
It links into an integrated entity with bottom plane, wherein the welding point of the connecting elements and the end socket is by the top weld seam
And lower part weld seam two parts composition, the connecting elements are with skirt cylinder/changeover portion welding point
The girth joint of complete penetraction and fusion in welding pattern, and the connecting elements can be processed by the end socket end clout.
2. skirt according to claim 1 and bottom (head) connection structure, it is characterized in that: the upper groove, lower groove connect
Connect place's processing root face.
3. skirt according to claim 2 and bottom (head) connection structure, it is characterized in that: the connecting elements bottom and institute
Skirt cylinder/changeover portion the junction stated is equipped with the straight section, is machined with the circumferential groove thereon, the straight section with
There is the round-corner transition between the bottom plane.
4. skirt according to claim 3 and bottom (head) connection structure, it is characterized in that: the outer straight flange of the connecting elements
Consistent with the skirt cylinder/changeover portion overall diameter, the outer straight flange passes through the outer inclined-plane and the upper groove
Connection, the angle between the outer inclined-plane and the outer straight flange generally take 10~25 ° according to true form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242812.XA CN109958877A (en) | 2019-03-28 | 2019-03-28 | Skirt and bottom (head) connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242812.XA CN109958877A (en) | 2019-03-28 | 2019-03-28 | Skirt and bottom (head) connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109958877A true CN109958877A (en) | 2019-07-02 |
Family
ID=67025136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910242812.XA Pending CN109958877A (en) | 2019-03-28 | 2019-03-28 | Skirt and bottom (head) connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109958877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702298A (en) * | 2020-06-18 | 2020-09-25 | 东方电气集团东方锅炉股份有限公司 | Double-side welding method for spherical end socket and skirt shell ring |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132441A (en) * | 1977-04-26 | 1978-11-18 | Japan Steel Works Ltd | Method of welding pressure vessel and skirt |
| CN1360991A (en) * | 2000-12-29 | 2002-07-31 | 中国石油化工集团公司 | Welding process and welded part of bottom and skirt support for high pressure container |
| CN1629057A (en) * | 2003-12-16 | 2005-06-22 | 中国石油天然气华东勘察设计研究院 | Welding structure of bottom seal head and skirt for large-scale container |
| CN201023894Y (en) * | 2007-04-18 | 2008-02-20 | 上海贤达压力容器制造有限公司 | Support skirt base structure used for large-scale vertical container |
| CN105889747A (en) * | 2016-06-14 | 2016-08-24 | 江苏省化工设备制造安装有限公司 | Hemispherical head vertical pressure vessel with skirt support |
| CN109063263A (en) * | 2018-07-03 | 2018-12-21 | 哈尔滨电气股份有限公司 | A kind of tower body skirt and lower head junction lower head strength check methods |
-
2019
- 2019-03-28 CN CN201910242812.XA patent/CN109958877A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53132441A (en) * | 1977-04-26 | 1978-11-18 | Japan Steel Works Ltd | Method of welding pressure vessel and skirt |
| CN1360991A (en) * | 2000-12-29 | 2002-07-31 | 中国石油化工集团公司 | Welding process and welded part of bottom and skirt support for high pressure container |
| CN1629057A (en) * | 2003-12-16 | 2005-06-22 | 中国石油天然气华东勘察设计研究院 | Welding structure of bottom seal head and skirt for large-scale container |
| CN201023894Y (en) * | 2007-04-18 | 2008-02-20 | 上海贤达压力容器制造有限公司 | Support skirt base structure used for large-scale vertical container |
| CN105889747A (en) * | 2016-06-14 | 2016-08-24 | 江苏省化工设备制造安装有限公司 | Hemispherical head vertical pressure vessel with skirt support |
| CN109063263A (en) * | 2018-07-03 | 2018-12-21 | 哈尔滨电气股份有限公司 | A kind of tower body skirt and lower head junction lower head strength check methods |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702298A (en) * | 2020-06-18 | 2020-09-25 | 东方电气集团东方锅炉股份有限公司 | Double-side welding method for spherical end socket and skirt shell ring |
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Application publication date: 20190702 |
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