CN105626923A - All-position welding interface structure for pipeline and valve and welding method thereof - Google Patents
All-position welding interface structure for pipeline and valve and welding method thereof Download PDFInfo
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- CN105626923A CN105626923A CN201410601582.9A CN201410601582A CN105626923A CN 105626923 A CN105626923 A CN 105626923A CN 201410601582 A CN201410601582 A CN 201410601582A CN 105626923 A CN105626923 A CN 105626923A
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Abstract
The invention discloses an all-position welding interface structure for a pipeline and a valve. The all-position welding interface structure comprises the pipeline and the valve which are welded together. A welding interface of the pipeline and the valve is provided with an inner cavity. The lateral wall of the inner cavity is thinner than that of the pipeline and that of the valve. A metal ring is arranged in the inner cavity and corresponds to the welding seam position of the pipeline and the valve. The invention further discloses a welding method used for forming the all-position welding interface structure for the pipeline and the valve. According to the all-position welding interface structure for the pipeline and the valve and the welding method, the inner cavity of the pipeline and the valve is effectively protected due to the arrangement of the metal ring, and redundancies such as welding spatter and post-welding oxide are prevented from entering the inner cavity. The thickness of the lateral wall of the inner cavity of the welding interface is smaller than the thickness of the lateral wall of the pipeline or the valve, so that complete penetration in the fusion welding process is guaranteed, and a high-quality welding seam is formed.
Description
Technical field
The present invention relates to welding technology field, particularly relate to a kind of pipeline and valve all-position welding interface structure, the invention still further relates to the welding method for forming this pipeline and valve all-position welding interface structure.
Background technology
Pressurizing transmission system is a very important subsystem on Upper Stage rocket, because generally it needs pre-packaged one month, causing that time in orbit is longer, and need to experience at band gaseity the operating modes such as transport, lifting, the sealing leak rate of pressurizing transmission system is proposed requirements at the higher level by this. In order to meet Upper Stage, pressurizing transmission system is sealed the high request of leak rate, improve sealing reliability, on Upper Stage arrow, pressurizing transmission system can adopt all-position welding mode that pipeline and valve unit are attached, to be effectively ensured the sealing reliability of whole system. But, owing to the integral solder butt welded seam prescription of one side pipe valve is high, on the other hand again owing to the performance requirement of valve is higher and structure is complicated, after pipeline and standard, weld seam will can not carry out complete surface treatment and quality testing, this is accomplished by structural design to improve weldquality as much as possible, and is avoided as much as the welding fifth wheel impact on pipe-line system, and current all-position welding technique can not reach requirement.
Summary of the invention
Present invention solves the technical problem that be existing solder technology cannot meet the Upper Stage high-quality on the weld seam in pressurizing transmission system require and cannot avoid welding the fifth wheel problem on the impact of pipe-line system, and then provide a kind of can be formed high-quality weld seam and it can be avoided that welding the fifth wheel all-position welding interface structure on the impact of pipe-line system, the present invention also provides for the welding method for forming this all-position welding interface structure.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is as follows:
Pipeline and valve all-position welding interface structure, including the pipeline welded together and valve, the welding junction of described pipeline and described valve is with inner chamber, the sidewall thickness of described inner chamber is less than the sidewall thickness of described pipeline, simultaneously again smaller than the sidewall thickness of described valve, in described inner chamber, the position while welding of corresponding described pipeline and described valve is provided with quoit.
Preferably, described quoit is O type quoit.
Preferably, the internal diameter of described inner chamber is more than the internal diameter of the internal diameter of described pipeline and/or the described inner chamber internal diameter more than described valve.
Preferably, the width of described quoit is more than the weld width of described pipeline and the welding junction of described valve.
Preferably, the sidewall wall thickness of described inner chamber is the 50%��80% of the sidewall wall thickness of 50%��80% or described valve of the sidewall wall thickness of described pipeline.
The present invention also provides for a kind of welding method for forming described pipeline and valve all-position welding interface structure, comprises the following steps:
S01: the welding ends of the welding ends of described pipeline and described valve is all made thin-wall construction;
S02: the welding ends of described pipeline is docked with the welding ends of described valve and forms the welding junction with described inner chamber, and insert described quoit in described inner chamber;
S03: by described pipeline with the welding junction of described valve in the outside melting welding of described quoit, obtain described pipeline and valve all-position welding interface structure.
Preferably, there is flange in the arranged outside of the welding ends of described pipeline and/or have flange in the arranged outside of the welding ends of described valve.
Preferably, the inner side of the welding ends of described pipeline is provided with weld groove.
Preferably, the inner side of the welding ends of described valve is provided with weld groove.
Preferably, on the lateral wall of described quoit, the position while welding of corresponding described pipeline and described valve is provided with weld groove.
Beneficial effects of the present invention is as follows:
The all-position welding interface structure of the present invention and welding method can effectively protect pipeline and valve cavity by the setting of quoit; prevent the fifth wheel such as spatter and postwelding oxide from entering in inner chamber; in the present invention, the sidewall thickness of the inner chamber of welding junction is less than the sidewall thickness of pipeline or valve; thereby may be ensured that fusion process can through welding, and then form high-quality weld seam.
Accompanying drawing explanation
Fig. 1 is the structural representation of the all-position welding interface structure of the present invention;
Fig. 2 is the structural representation of the pipeline in the present invention/standard end;
The structural representation of O type quoit in the present invention in Fig. 3;
In figure:
1 pipeline, 2 valves, 3 inner chambers, 4O type quoit, 5 flange.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme and beneficial effect are further illustrated.
Referring to accompanying drawing 1 to accompanying drawing 3, the pipeline of the present invention and valve all-position welding interface structure, including the pipeline 1 welded together and valve 2, the welding junction of pipeline 1 and valve 2 is with inner chamber 3, the sidewall thickness of described inner chamber 3 is less than the sidewall thickness of described pipeline 1, simultaneously again smaller than the sidewall thickness of described valve 2, namely the sidewall of inner chamber 3 is all thinner than the sidewall of the sidewall of pipeline 1 and valve 2, and in inner chamber 3, the position while welding of corresponding pipeline 1 and valve 2 is provided with quoit.
The pipeline of the present invention and valve all-position welding interface structure, the impact of welding fifth wheel has been evaded by structural design, ensure that pipeline and standard quality, can be suitable under various latus rectum and pressure welding junction product, be effectively ensured the application at pipeline Yu valve connecting port of all position welding connection technology.
In the present invention, the shape of above-mentioned quoit can be determined according to the shape of weld seam, as it can be seen, generally weld seam is annular, now can adopt O type quoit 4.
The welding junction structure of the present invention can arrange the internal diameter of inner chamber 3 more than one of internal diameter at least above the internal diameter of pipeline 1 and valve 2, so can ensure that the pipeline of seam is unobstructed.
The welding junction of the present invention can arrange the width weld width more than pipeline 1 and the welding junction of valve 2 of quoit, thus more efficiently avoiding the fifth wheel such as spatter and postwelding oxide to enter in inner chamber completely.
In order to ensure can through welding in fusion process, form high-quality weld seam, ensure again the intensity of seam simultaneously, can arrange that the sidewall wall thickness of the inner chamber 3 at the welding junction place in the present invention can be the sidewall wall thickness of pipeline 1 50%��80%, such as can 60%, 65%, 70% etc., or the 50%��80% of the sidewall wall thickness of valve 2, also can be such as 60%, 65%, 70% etc.
Present invention also offers the welding method for forming above-mentioned pipeline and valve all-position welding interface structure, specifically include following steps:
S01: the welding ends of the welding ends of pipeline 1 and valve 2 is all made thin-wall construction;
S02: the welding ends of the welding ends of pipeline 1 with valve 2 is docked and forms the welding junction with inner chamber 3, and insert quoit in inner chamber 3;
S03: by pipeline 1 with the welding junction of valve 2 in the outside melting welding of quoit, obtain pipeline and valve all-position welding interface structure.
Quoit is placed on inside welding ends by the welding method of the present invention before pipeline 1 and valve 2 weld, and effectively protects pipeline, valve cavity.
In order to prevent necking down, referring to accompanying drawing 2, it is possible to the arranged outside at the welding ends of pipeline 1 has flange 5 and/or has flange 5 in the arranged outside of the welding ends of valve 2.
In order to improve welding quality, referring to accompanying drawing 2, weld groove can be set in the inner side of the inner side of the welding ends of pipeline 1 and the welding ends of valve 2, referring to accompanying drawing 3, it is also possible to the position while welding of corresponding pipeline 1 and valve 2 arranges weld groove on the lateral wall of quoit.
Claims (10)
1. pipeline and valve all-position welding interface structure, including the pipeline (1) welded together and valve (2), it is characterized in that: the welding junction of described pipeline (1) and described valve (2) is with inner chamber (3), the sidewall thickness of described inner chamber (3) is less than the sidewall thickness of described pipeline (1), simultaneously again smaller than the sidewall thickness of described valve (2), in described inner chamber (3), the position while welding of corresponding described pipeline (1) and described valve (2) is provided with quoit.
2. pipeline as claimed in claim 1 and valve all-position welding interface structure, it is characterised in that: described quoit is O type quoit (4).
3. as claimed in claim 2 pipeline and valve all-position welding interface structure, it is characterised in that: the internal diameter of described inner chamber (3) is more than internal diameter more than described valve (2) of the internal diameter of described pipeline (1) and/or the internal diameter of described inner chamber (3).
4. pipeline as claimed in claim 3 and valve all-position welding interface structure, it is characterised in that: the width of described quoit is more than the weld width of described pipeline (1) and the welding junction of described valve (2).
5. pipeline and valve all-position welding interface structure as according to any one of Claims 1-4, it is characterised in that: the sidewall wall thickness of described inner chamber (3) is the 50%��80% of the sidewall wall thickness of 50%��80% or described valve (2) of the sidewall wall thickness of described pipeline (1).
6. want the welding method of pipeline according to any one of 1 to 5 and valve all-position welding interface structure for forming such as right for one kind, it is characterised in that comprise the following steps:
S01: the welding ends of the welding ends of described pipeline (1) and described valve (2) is all made thin-wall construction;
S02: the welding ends of the welding ends of described pipeline (1) with described valve (2) is docked and forms the welding junction with described inner chamber (3), and insert described quoit in described inner chamber (3);
S03: by described pipeline (1) with the welding junction of described valve (2) in the outside melting welding of described quoit, obtain described pipeline and valve all-position welding interface structure.
7. as claimed in claim 6 welding method, it is characterised in that: the arranged outside at the welding ends of described pipeline (1) has flange (5) and/or has flange (5) in the arranged outside of the welding ends of described valve (2).
8. welding method as claimed in claim 7, it is characterised in that: the inner side of the welding ends of described pipeline (1) is provided with weld groove.
9. welding method as claimed in claim 8, it is characterised in that: the inner side of the welding ends of described valve (2) is provided with weld groove.
10. welding method as according to any one of claim 6 to 9, it is characterised in that: on the lateral wall of described quoit, the position while welding of corresponding described pipeline (1) and described valve (2) is provided with weld groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410601582.9A CN105626923A (en) | 2014-10-31 | 2014-10-31 | All-position welding interface structure for pipeline and valve and welding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410601582.9A CN105626923A (en) | 2014-10-31 | 2014-10-31 | All-position welding interface structure for pipeline and valve and welding method thereof |
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| Publication Number | Publication Date |
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| CN105626923A true CN105626923A (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410601582.9A Pending CN105626923A (en) | 2014-10-31 | 2014-10-31 | All-position welding interface structure for pipeline and valve and welding method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB627954A (en) * | 1947-09-09 | 1949-08-18 | Waclaw Kossowski | Improvements in permanent pipe joints |
| EP0068711A2 (en) * | 1981-06-24 | 1983-01-05 | Smith Valve Corporation | Male-ended valve |
| JPS6356392A (en) * | 1986-08-25 | 1988-03-10 | Toshiba Corp | Method for connecting gas sealed switchgear case |
| CN2132901Y (en) * | 1992-07-14 | 1993-05-12 | 冯逸骅 | Melt-welding butt joint of inner wall plastic-coated steel pipe |
| CN2133739Y (en) * | 1991-10-30 | 1993-05-19 | 李绍荣 | Welded pipe joint |
| CN1317386A (en) * | 2001-06-06 | 2001-10-17 | 东营柯林瑞尔科技有限责任公司 | Welding technology for linking steel-plastic tubes |
| CN102554484A (en) * | 2012-01-11 | 2012-07-11 | 阮继成 | Metal pipe welding method and metal pipe welding assembly |
-
2014
- 2014-10-31 CN CN201410601582.9A patent/CN105626923A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB627954A (en) * | 1947-09-09 | 1949-08-18 | Waclaw Kossowski | Improvements in permanent pipe joints |
| EP0068711A2 (en) * | 1981-06-24 | 1983-01-05 | Smith Valve Corporation | Male-ended valve |
| JPS6356392A (en) * | 1986-08-25 | 1988-03-10 | Toshiba Corp | Method for connecting gas sealed switchgear case |
| CN2133739Y (en) * | 1991-10-30 | 1993-05-19 | 李绍荣 | Welded pipe joint |
| CN2132901Y (en) * | 1992-07-14 | 1993-05-12 | 冯逸骅 | Melt-welding butt joint of inner wall plastic-coated steel pipe |
| CN1317386A (en) * | 2001-06-06 | 2001-10-17 | 东营柯林瑞尔科技有限责任公司 | Welding technology for linking steel-plastic tubes |
| CN102554484A (en) * | 2012-01-11 | 2012-07-11 | 阮继成 | Metal pipe welding method and metal pipe welding assembly |
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Application publication date: 20160601 |
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