CN112658534A - Welding straight-through sleeve for pipe section connection and use method thereof - Google Patents
Welding straight-through sleeve for pipe section connection and use method thereof Download PDFInfo
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- CN112658534A CN112658534A CN202011357490.2A CN202011357490A CN112658534A CN 112658534 A CN112658534 A CN 112658534A CN 202011357490 A CN202011357490 A CN 202011357490A CN 112658534 A CN112658534 A CN 112658534A
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- 238000003466 welding Methods 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000013078 crystal Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
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Abstract
The invention discloses a welding straight-through sleeve for pipe section connection and a use method thereof. The end part of the cylinder body is provided with the groove for supporting the welding solution formed at the welding part to form the molten pool, so that the crystal grains in a heat affected zone are reduced, the plasticity and the toughness of the welding position are improved, the problems that the molten pool is not easily formed at the welding position when the traditional welding straight-through sleeve is vertically and reversely mounted or horizontally mounted, the welding quality is poor due to the fact that the welding solution is easily lost when the traditional welding straight-through sleeve is vertically and reversely mounted or horizontally mounted are solved, and the problems that the welding position is cracked and the like are avoided.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a welded straight-through sleeve for pipe section connection and a using method thereof.
Background
In the construction of ships, due to various reasons such as arrangement, manufacture, transportation and construction methods, pipelines must be divided into a plurality of sections according to a certain length during design and manufacture, and therefore, the sections need to be connected to a pipeline installation site. For the purpose of protecting equipment, a part of pipelines cannot be provided with detachable joints, and a pipe section welding straight-through sleeve is required due to the reasons of limitation of the external dimension and the like.
When the existing type of welding straight-through sleeve is welded with a pipe section, the top end of the sleeve and the pipe section are fillet welded. When the welding straight-through sleeve is vertically and normally installed, the pipe wall and the top end of the sleeve form an upward 90-degree included angle, and a molten pool can be formed due to the tension of a welding solution, so that the welding straight-through sleeve is suitable for welding. If the welding straight-through sleeve is vertically installed in a reverse state, the top end of the sleeve and the pipe wall form a downward 90-degree included angle, a molten pool is not easily formed during sleeve welding, molten welding liquid is easy to run off, and in order to guarantee the height of a welding seam during welding, the welding time is often prolonged or welding is repeatedly carried out to cause overhigh welding temperature, so that the problems that crystal grains in a heat affected zone are thick, the plasticity and the toughness are obviously reduced, cracking is easily caused and the like are solved. When the welding straight-through sleeve is horizontally installed, a molten pool is not easily formed at the lower part of a welding seam when the sleeve is welded, and molten welding liquid is easily lost, so that the same problem as that when the sleeve is vertically installed in a reversed state is caused.
Disclosure of Invention
In view of the above, the present invention provides a welding straight-through sleeve for pipe section connection and a method for using the same, which are used to solve the problems that a weld pool is not easily formed at a welding position when a traditional welding straight-through sleeve is installed in a vertical reverse state or in a horizontal state, and welding solution is easily lost, so that welding quality is poor.
A welding straight-through sleeve for connecting pipe sections comprises a barrel body, wherein the barrel body is of an inner hollow structure, and a groove used for supporting welding solution formed at a welding position to form a molten pool is formed in the end portion of the barrel body.
Preferably, both ends of the cylinder are provided with bevels which are inclined inwards.
Preferably, one end of the cylinder body is provided with an oblique inward groove, the other end of the cylinder body is provided with an oblique outward groove, and the end part of the cylinder body, which is provided with the oblique outward groove, is provided with the auxiliary sleeve.
Preferably, the included angle between the slope surface of the oblique outward groove and the horizontal plane is 30 degrees.
Preferably, the included angle between the slope surface of the oblique inward groove and the horizontal plane is 30 degrees.
A use method of a welding straight-through sleeve for connecting pipe sections specifically comprises the following steps:
inserting a section of pipe section to be welded into the cylinder body from one end of the welding straight-through sleeve, and welding and fixing the pipe section to be welded and the welding straight-through sleeve from the upper part;
and then, vertically inserting the other pipe section to be welded with the same specification into the cylinder body from the other end of the welding through sleeve, and welding and fixing the pipe section to be welded and the welding through sleeve from the upper part.
A use method of a welding straight-through sleeve for connecting pipe sections specifically comprises the following steps:
inserting a section of pipe section to be welded into the cylinder body of the welding straight-through sleeve from the end part of the welding straight-through sleeve with the oblique inner groove, and welding and fixing the pipe section to be welded and the welding straight-through sleeve from the upper part;
then, the auxiliary sleeve is sleeved on another section of pipe section to be welded with the same specification and is fixed by spot welding, then the pipe section to be welded is inserted into the cylinder body from the end part with the inclined outward groove of the welding straight-through sleeve, and the pipe section to be welded, the auxiliary sleeve and the welding straight-through sleeve are welded into a whole.
The invention has the beneficial effects that:
the end part of the cylinder body is provided with the groove for supporting the welding solution formed at the welding part to form the molten pool, so that the crystal grains in a heat affected zone are reduced, the plasticity and the toughness of the welding position are improved, the problems that the molten pool is not easily formed at the welding position when the traditional welding straight-through sleeve is vertically and reversely mounted or horizontally mounted, the welding quality is poor due to the fact that the welding solution is easily lost when the traditional welding straight-through sleeve is vertically and reversely mounted or horizontally mounted are solved, and the problems that the welding position is cracked and the like are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a welded feed-through sleeve according to one embodiment.
Fig. 2 is an enlarged view of a portion a in fig. 1 and 3.
Fig. 3 is a schematic structural view of a welded through sleeve in the second embodiment.
Fig. 4 is an enlarged view of a portion B in fig. 3.
The reference numerals in the figures have the meaning:
1 is a pipe section to be welded, 2 is a welding straight-through sleeve, 3 is an auxiliary sleeve, 4 is an oblique inward groove, and 5 is an oblique outward groove.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
The invention provides a welding straight-through sleeve for connecting pipe sections, which comprises a barrel body, wherein the barrel body is of an inner hollow structure, and the end part of the barrel body is provided with a groove for supporting welding solution formed at a welding part to form a molten pool.
The end part of the cylinder body is provided with the groove for supporting the welding solution formed at the welding part to form a molten pool, so that grains in a heat affected zone are reduced, the plasticity and toughness of the welding position are improved, the problems that the welding position is not easy to form the molten pool and the welding solution is easy to run off to cause poor welding quality when the traditional welding straight-through sleeve is vertically and reversely installed or horizontally installed are solved, and the problems that the welding position is cracked and the like are avoided.
The utility model provides a direct sleeve of welding is applicable to tertiary piping of boats and ships, and the main technical parameter of tertiary piping of boats and ships is as follows:
according to the welding straight-through sleeve, when the pipe section to be welded is horizontally installed, vertically normally installed and vertically reversely installed for welding, the straight-through sleeve can be in a stroke molten pool at a welding position, the achievement of the height of a welding seam and the implementation of multilayer multi-pass welding are facilitated, and the reduction of the material structure and the performance of a heat affected zone caused by overhigh temperature due to overlong welding time can be avoided.
Specifically, in a first embodiment, the present application provides a welding straight-through sleeve for connecting pipe sections, which includes a cylinder body, where the cylinder body is an inner hollow structure, and both ends of the cylinder body are provided with an oblique inner groove for supporting a welding solution formed at a welding portion to form a molten pool.
The included angle between the slope surface of the oblique inward groove and the horizontal plane is 30 degrees.
In this embodiment, the use method of the welded straight-through sleeve for pipe section connection of the present invention specifically includes the following steps:
and inserting a section of pipe section to be welded into the cylinder body from one end of the welding straight-through sleeve, wherein the distance from the port of the pipe section to be welded to the center of the welding straight-through sleeve is 0-1 mm. And welding and fixing the pipe section to be welded and the welding straight-through sleeve from the upper part.
Then, vertically inserting another pipe section to be welded with the same specification into the cylinder body from the other end of the welding straight-through sleeve, wherein the distance from the port of the pipe section to be welded to the center of the welding straight-through sleeve is also 0-1 mm. And welding and fixing the pipe section to be welded and the welding straight-through sleeve from the upper part.
The welding feed-through sleeve in this embodiment is particularly suitable for horizontal installation welding of pipe sections to be welded.
In a second embodiment, the present application provides a welding straight-through sleeve for connecting pipe sections, which includes a cylinder body, the cylinder body is of an inner hollow structure, one end of the cylinder body is provided with an oblique inner groove, the other end of the cylinder body is provided with an oblique outer groove, and an auxiliary sleeve is arranged at an end portion of the cylinder body, which is provided with the oblique outer groove.
The included angle between the slope surface of the oblique outward groove and the horizontal plane is 30 degrees.
The included angle between the slope surface of the oblique inward groove and the horizontal plane is 30 degrees.
In this embodiment, the use method of the welded straight-through sleeve for pipe section connection of the present invention specifically includes the following steps:
and inserting a section of pipe section to be welded into the cylinder body of the welding straight-through sleeve from the end part of the welding straight-through sleeve with the oblique inner groove, wherein the distance from the port of the pipe section to be welded to the center of the welding straight-through sleeve is 0-1 mm. And welding and fixing the pipe section to be welded and the welding straight-through sleeve from the upper part.
Then, the auxiliary sleeve is sleeved on another pipe section to be welded with the same specification and is fixed by spot welding, and then the pipe section to be welded is inserted into the cylinder body from the end part with the inclined outward groove of the welding straight-through sleeve, so that a distance t is kept between the auxiliary sleeve and the welding straight-through sleeve, wherein t is (0.5-1.0) d, and d is the wall thickness of the pipe section to be welded. And welding the pipe section to be welded, the auxiliary sleeve and the welding straight-through sleeve into a whole.
The welding straight-through sleeve in the embodiment is particularly suitable for vertical reverse installation welding of a pipe section to be welded.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The welding straight-through sleeve for connecting the pipe sections is characterized by comprising a barrel body, wherein the barrel body is of an inner hollow structure, and a groove used for supporting welding solution formed at a welding part to form a molten pool is arranged at the end part of the barrel body.
2. The welded feed-through sleeve for joining pipe sections according to claim 1, wherein both ends of the cylindrical body are provided with obliquely inward bevels.
3. The welded feed-through sleeve for joining pipe sections according to claim 1, wherein the cylinder is provided with an obliquely inward bevel at one end and an obliquely outward bevel at the other end, and the end of the cylinder provided with the obliquely outward bevel is provided with an auxiliary sleeve.
4. The welded feed-through sleeve for joining pipe sections according to claim 3, wherein the angle between the slope of said beveled outward slope and the horizontal plane is 30 °.
5. A welded feed-through sleeve for joining pipe sections according to claim 2 or 3, wherein the angle between the slope of the obliquely inwardly facing groove and the horizontal plane is 30 °.
6. A method of using a welded feed-through sleeve for joining pipe sections according to claim 2, comprising the steps of:
inserting a section of pipe section to be welded into the cylinder body from one end of the welding straight-through sleeve, and welding and fixing the pipe section to be welded and the welding straight-through sleeve from the upper part;
and then, vertically inserting the other pipe section to be welded with the same specification into the cylinder body from the other end of the welding through sleeve, and welding and fixing the pipe section to be welded and the welding through sleeve from the upper part.
7. A method of using a welded feed-through sleeve for joining pipe sections according to claim 3, comprising the steps of:
inserting a section of pipe section to be welded into the cylinder body of the welding straight-through sleeve from the end part of the welding straight-through sleeve with the oblique inner groove, and welding and fixing the pipe section to be welded and the welding straight-through sleeve from the upper part;
then, the auxiliary sleeve is sleeved on another section of pipe section to be welded with the same specification and is fixed by spot welding, then the pipe section to be welded is inserted into the cylinder body from the end part with the inclined outward groove of the welding straight-through sleeve, and the pipe section to be welded, the auxiliary sleeve and the welding straight-through sleeve are welded into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011357490.2A CN112658534A (en) | 2020-11-27 | 2020-11-27 | Welding straight-through sleeve for pipe section connection and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011357490.2A CN112658534A (en) | 2020-11-27 | 2020-11-27 | Welding straight-through sleeve for pipe section connection and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112658534A true CN112658534A (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011357490.2A Pending CN112658534A (en) | 2020-11-27 | 2020-11-27 | Welding straight-through sleeve for pipe section connection and use method thereof |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB513178A (en) * | 1938-04-04 | 1939-10-05 | Babcock & Wilcox Ltd | Improvements in or relating to welding |
| JP2011073037A (en) * | 2009-09-30 | 2011-04-14 | Japan Engineering Kk | Swan socket welded joint |
| CN205134308U (en) * | 2015-07-31 | 2016-04-06 | 瀚川基业（北京）科技有限公司 | Revolve and twist piling bar that creeps into |
-
2020
- 2020-11-27 CN CN202011357490.2A patent/CN112658534A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB513178A (en) * | 1938-04-04 | 1939-10-05 | Babcock & Wilcox Ltd | Improvements in or relating to welding |
| JP2011073037A (en) * | 2009-09-30 | 2011-04-14 | Japan Engineering Kk | Swan socket welded joint |
| CN205134308U (en) * | 2015-07-31 | 2016-04-06 | 瀚川基业（北京）科技有限公司 | Revolve and twist piling bar that creeps into |
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Application publication date: 20210416 |
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| RJ01 | Rejection of invention patent application after publication |